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4299 lines
175 KiB
4299 lines
175 KiB
/* |
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* MXF demuxer. |
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* Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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/* |
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* References |
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* SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value |
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* SMPTE 377M MXF File Format Specifications |
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* SMPTE 378M Operational Pattern 1a |
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* SMPTE 379M MXF Generic Container |
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* SMPTE 381M Mapping MPEG Streams into the MXF Generic Container |
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* SMPTE 382M Mapping AES3 and Broadcast Wave Audio into the MXF Generic Container |
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* SMPTE 383M Mapping DV-DIF Data to the MXF Generic Container |
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* SMPTE 2067-21 Interoperable Master Format — Application #2E |
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* |
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* Principle |
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* Search for Track numbers which will identify essence element KLV packets. |
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* Search for SourcePackage which define tracks which contains Track numbers. |
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* Material Package contains tracks with reference to SourcePackage tracks. |
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* Search for Descriptors (Picture, Sound) which contains codec info and parameters. |
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* Assign Descriptors to correct Tracks. |
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* |
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* Metadata reading functions read Local Tags, get InstanceUID(0x3C0A) then add MetaDataSet to MXFContext. |
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* Metadata parsing resolves Strong References to objects. |
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* |
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* Simple demuxer, only OP1A supported and some files might not work at all. |
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* Only tracks with associated descriptors will be decoded. "Highly Desirable" SMPTE 377M D.1 |
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*/ |
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|
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#include <inttypes.h> |
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#include <time.h> |
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|
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#include "libavutil/aes.h" |
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#include "libavutil/avstring.h" |
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#include "libavutil/mastering_display_metadata.h" |
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#include "libavutil/mathematics.h" |
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#include "libavcodec/bytestream.h" |
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#include "libavcodec/defs.h" |
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#include "libavcodec/internal.h" |
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#include "libavutil/channel_layout.h" |
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#include "libavutil/dict_internal.h" |
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#include "libavutil/intreadwrite.h" |
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#include "libavutil/parseutils.h" |
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#include "libavutil/timecode.h" |
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#include "libavutil/opt.h" |
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#include "avformat.h" |
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#include "avlanguage.h" |
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#include "demux.h" |
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#include "internal.h" |
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#include "mxf.h" |
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|
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#define MXF_MAX_CHUNK_SIZE (32 << 20) |
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#define RUN_IN_MAX (65535+1) // S377m-2004 section 5.5 and S377-1-2009 section 6.5, the +1 is to be slightly more tolerant |
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|
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typedef enum { |
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Header, |
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BodyPartition, |
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Footer |
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} MXFPartitionType; |
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|
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typedef enum { |
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OP1a = 1, |
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OP1b, |
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OP1c, |
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OP2a, |
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OP2b, |
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OP2c, |
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OP3a, |
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OP3b, |
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OP3c, |
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OPAtom, |
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OPSONYOpt, /* FATE sample, violates the spec in places */ |
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} MXFOP; |
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|
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typedef enum { |
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UnknownWrapped = 0, |
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FrameWrapped, |
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ClipWrapped, |
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} MXFWrappingScheme; |
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|
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typedef struct MXFPartition { |
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int closed; |
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int complete; |
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MXFPartitionType type; |
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uint64_t previous_partition; |
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int index_sid; |
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int body_sid; |
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int64_t essence_offset; ///< absolute offset of essence |
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int64_t essence_length; |
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int32_t kag_size; |
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int64_t header_byte_count; |
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int64_t index_byte_count; |
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int pack_length; |
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int64_t pack_ofs; ///< absolute offset of pack in file, including run-in |
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int64_t body_offset; |
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KLVPacket first_essence_klv; |
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} MXFPartition; |
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typedef struct MXFMetadataSet { |
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UID uid; |
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uint64_t partition_score; |
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} MXFMetadataSet; |
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typedef struct MXFMetadataSetGroup { |
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MXFMetadataSet **metadata_sets; |
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int metadata_sets_count; |
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} MXFMetadataSetGroup; |
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typedef struct MXFCryptoContext { |
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MXFMetadataSet meta; |
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UID source_container_ul; |
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} MXFCryptoContext; |
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typedef struct MXFStructuralComponent { |
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MXFMetadataSet meta; |
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UID source_package_ul; |
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UID source_package_uid; |
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UID data_definition_ul; |
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int64_t duration; |
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int64_t start_position; |
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int source_track_id; |
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} MXFStructuralComponent; |
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typedef struct MXFSequence { |
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MXFMetadataSet meta; |
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UID data_definition_ul; |
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UID *structural_components_refs; |
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int structural_components_count; |
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int64_t duration; |
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uint8_t origin; |
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} MXFSequence; |
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typedef struct MXFTimecodeComponent { |
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MXFMetadataSet meta; |
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int drop_frame; |
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int start_frame; |
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struct AVRational rate; |
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AVTimecode tc; |
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} MXFTimecodeComponent; |
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typedef struct { |
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MXFMetadataSet meta; |
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UID input_segment_ref; |
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} MXFPulldownComponent; |
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typedef struct { |
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MXFMetadataSet meta; |
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UID *structural_components_refs; |
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int structural_components_count; |
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int64_t duration; |
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} MXFEssenceGroup; |
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typedef struct { |
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MXFMetadataSet meta; |
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char *name; |
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char *value; |
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} MXFTaggedValue; |
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typedef struct { |
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MXFMetadataSet meta; |
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MXFSequence *sequence; /* mandatory, and only one */ |
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UID sequence_ref; |
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int track_id; |
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char *name; |
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uint8_t track_number[4]; |
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AVRational edit_rate; |
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int intra_only; |
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uint64_t sample_count; |
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int64_t original_duration; /* st->duration in SampleRate/EditRate units */ |
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int index_sid; |
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int body_sid; |
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MXFWrappingScheme wrapping; |
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int edit_units_per_packet; /* how many edit units to read at a time (PCM, ClipWrapped) */ |
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int require_reordering; |
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int channel_ordering[FF_SANE_NB_CHANNELS]; |
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} MXFTrack; |
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typedef struct MXFDescriptor { |
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MXFMetadataSet meta; |
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UID essence_container_ul; |
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UID essence_codec_ul; |
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UID codec_ul; |
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AVRational sample_rate; |
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AVRational aspect_ratio; |
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int width; |
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int height; /* Field height, not frame height */ |
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int frame_layout; /* See MXFFrameLayout enum */ |
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int video_line_map[2]; |
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#define MXF_FIELD_DOMINANCE_DEFAULT 0 |
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#define MXF_FIELD_DOMINANCE_FF 1 /* coded first, displayed first */ |
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#define MXF_FIELD_DOMINANCE_FL 2 /* coded first, displayed last */ |
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int field_dominance; |
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int channels; |
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int bits_per_sample; |
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int64_t duration; /* ContainerDuration optional property */ |
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unsigned int component_depth; |
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unsigned int black_ref_level; |
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unsigned int white_ref_level; |
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unsigned int color_range; |
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unsigned int horiz_subsampling; |
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unsigned int vert_subsampling; |
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UID *file_descriptors_refs; |
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int file_descriptors_count; |
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UID *sub_descriptors_refs; |
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int sub_descriptors_count; |
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int linked_track_id; |
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uint8_t *extradata; |
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int extradata_size; |
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enum AVPixelFormat pix_fmt; |
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UID color_primaries_ul; |
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UID color_trc_ul; |
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UID color_space_ul; |
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AVMasteringDisplayMetadata *mastering; |
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AVContentLightMetadata *coll; |
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size_t coll_size; |
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} MXFDescriptor; |
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|
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typedef struct MXFMCASubDescriptor { |
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MXFMetadataSet meta; |
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UID uid; |
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UID mca_link_id; |
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UID soundfield_group_link_id; |
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UID *group_of_soundfield_groups_link_id_refs; |
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int group_of_soundfield_groups_link_id_count; |
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UID mca_label_dictionary_id; |
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int mca_channel_id; |
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char *language; |
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} MXFMCASubDescriptor; |
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|
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typedef struct MXFFFV1SubDescriptor { |
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MXFMetadataSet meta; |
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uint8_t *extradata; |
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int extradata_size; |
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} MXFFFV1SubDescriptor; |
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|
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typedef struct MXFIndexTableSegment { |
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MXFMetadataSet meta; |
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int edit_unit_byte_count; |
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int index_sid; |
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int body_sid; |
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AVRational index_edit_rate; |
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uint64_t index_start_position; |
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uint64_t index_duration; |
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int8_t *temporal_offset_entries; |
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int *flag_entries; |
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uint64_t *stream_offset_entries; |
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int nb_index_entries; |
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} MXFIndexTableSegment; |
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typedef struct MXFPackage { |
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MXFMetadataSet meta; |
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UID package_uid; |
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UID package_ul; |
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UID *tracks_refs; |
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int tracks_count; |
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UID descriptor_ref; |
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char *name; |
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UID *comment_refs; |
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int comment_count; |
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} MXFPackage; |
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typedef struct MXFEssenceContainerData { |
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MXFMetadataSet meta; |
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UID package_uid; |
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UID package_ul; |
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int index_sid; |
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int body_sid; |
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} MXFEssenceContainerData; |
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|
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/* decoded index table */ |
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typedef struct MXFIndexTable { |
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int index_sid; |
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int body_sid; |
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int nb_ptses; /* number of PTSes or total duration of index */ |
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int64_t first_dts; /* DTS = EditUnit + first_dts */ |
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int64_t *ptses; /* maps EditUnit -> PTS */ |
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int nb_segments; |
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MXFIndexTableSegment **segments; /* sorted by IndexStartPosition */ |
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AVIndexEntry *fake_index; /* used for calling ff_index_search_timestamp() */ |
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int8_t *offsets; /* temporal offsets for display order to stored order conversion */ |
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} MXFIndexTable; |
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typedef struct MXFContext { |
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const AVClass *class; /**< Class for private options. */ |
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MXFPartition *partitions; |
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unsigned partitions_count; |
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MXFOP op; |
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UID *packages_refs; |
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int packages_count; |
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UID *essence_container_data_refs; |
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int essence_container_data_count; |
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MXFMetadataSetGroup metadata_set_groups[MetadataSetTypeNB]; |
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AVFormatContext *fc; |
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struct AVAES *aesc; |
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uint8_t *local_tags; |
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int local_tags_count; |
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uint64_t footer_partition; |
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KLVPacket current_klv_data; |
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int run_in; |
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MXFPartition *current_partition; |
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int parsing_backward; |
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int64_t last_forward_tell; |
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int last_forward_partition; |
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int nb_index_tables; |
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MXFIndexTable *index_tables; |
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int eia608_extract; |
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} MXFContext; |
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/* NOTE: klv_offset is not set (-1) for local keys */ |
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typedef int MXFMetadataReadFunc(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset); |
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typedef struct MXFMetadataReadTableEntry { |
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const UID key; |
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MXFMetadataReadFunc *read; |
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int ctx_size; |
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enum MXFMetadataSetType type; |
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} MXFMetadataReadTableEntry; |
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/* partial keys to match */ |
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static const uint8_t mxf_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 }; |
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static const uint8_t mxf_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01 }; |
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static const uint8_t mxf_avid_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0e,0x04,0x03,0x01 }; |
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static const uint8_t mxf_canopus_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x0a,0x0e,0x0f,0x03,0x01 }; |
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static const uint8_t mxf_system_item_key_cp[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x03,0x01,0x04 }; |
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static const uint8_t mxf_system_item_key_gc[] = { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x03,0x01,0x14 }; |
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static const uint8_t mxf_klv_key[] = { 0x06,0x0e,0x2b,0x34 }; |
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static const uint8_t mxf_apple_coll_prefix[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x0e,0x0e,0x20,0x04,0x01,0x05,0x03,0x01 }; |
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/* complete keys to match */ |
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static const uint8_t mxf_crypto_source_container_ul[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x09,0x06,0x01,0x01,0x02,0x02,0x00,0x00,0x00 }; |
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static const uint8_t mxf_encrypted_triplet_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x04,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x7e,0x01,0x00 }; |
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static const uint8_t mxf_encrypted_essence_container[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0b,0x01,0x00 }; |
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static const uint8_t mxf_sony_mpeg4_extradata[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0e,0x06,0x06,0x02,0x02,0x01,0x00,0x00 }; |
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static const uint8_t mxf_ffv1_extradata[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x0e,0x04,0x01,0x06,0x0c,0x01,0x00,0x00,0x00 }; // FFV1InitializationMetadata |
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static const uint8_t mxf_avid_project_name[] = { 0xa5,0xfb,0x7b,0x25,0xf6,0x15,0x94,0xb9,0x62,0xfc,0x37,0x17,0x49,0x2d,0x42,0xbf }; |
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static const uint8_t mxf_jp2k_rsiz[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x0a,0x04,0x01,0x06,0x03,0x01,0x00,0x00,0x00 }; |
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static const uint8_t mxf_indirect_value_utf16le[] = { 0x4c,0x00,0x02,0x10,0x01,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 }; |
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static const uint8_t mxf_indirect_value_utf16be[] = { 0x42,0x01,0x10,0x02,0x00,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 }; |
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static const uint8_t mxf_apple_coll_max_cll[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x0e,0x0e,0x20,0x04,0x01,0x05,0x03,0x01,0x01 }; |
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static const uint8_t mxf_apple_coll_max_fall[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x0e,0x0e,0x20,0x04,0x01,0x05,0x03,0x01,0x02 }; |
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|
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static const uint8_t mxf_mca_label_dictionary_id[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x0e,0x01,0x03,0x07,0x01,0x01,0x00,0x00,0x00 }; |
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static const uint8_t mxf_mca_tag_symbol[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x0e,0x01,0x03,0x07,0x01,0x02,0x00,0x00,0x00 }; |
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static const uint8_t mxf_mca_tag_name[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x0e,0x01,0x03,0x07,0x01,0x03,0x00,0x00,0x00 }; |
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static const uint8_t mxf_group_of_soundfield_groups_link_id[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x0e,0x01,0x03,0x07,0x01,0x04,0x00,0x00,0x00 }; |
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static const uint8_t mxf_mca_link_id[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x0e,0x01,0x03,0x07,0x01,0x05,0x00,0x00,0x00 }; |
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static const uint8_t mxf_mca_channel_id[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x0e,0x01,0x03,0x04,0x0a,0x00,0x00,0x00,0x00 }; |
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static const uint8_t mxf_soundfield_group_link_id[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x0e,0x01,0x03,0x07,0x01,0x06,0x00,0x00,0x00 }; |
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static const uint8_t mxf_mca_rfc5646_spoken_language[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x0d,0x03,0x01,0x01,0x02,0x03,0x15,0x00,0x00 }; |
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|
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static const uint8_t mxf_sub_descriptor[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x09,0x06,0x01,0x01,0x04,0x06,0x10,0x00,0x00 }; |
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|
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static const uint8_t mxf_mastering_display_prefix[13] = { FF_MXF_MasteringDisplay_PREFIX }; |
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static const uint8_t mxf_mastering_display_uls[4][16] = { |
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FF_MXF_MasteringDisplayPrimaries, |
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FF_MXF_MasteringDisplayWhitePointChromaticity, |
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FF_MXF_MasteringDisplayMaximumLuminance, |
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FF_MXF_MasteringDisplayMinimumLuminance, |
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}; |
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|
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#define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y))) |
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|
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static void mxf_free_metadataset(MXFMetadataSet **ctx, enum MXFMetadataSetType type) |
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{ |
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MXFIndexTableSegment *seg; |
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switch (type) { |
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case Descriptor: |
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case MultipleDescriptor: |
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av_freep(&((MXFDescriptor *)*ctx)->extradata); |
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av_freep(&((MXFDescriptor *)*ctx)->mastering); |
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av_freep(&((MXFDescriptor *)*ctx)->coll); |
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av_freep(&((MXFDescriptor *)*ctx)->file_descriptors_refs); |
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av_freep(&((MXFDescriptor *)*ctx)->sub_descriptors_refs); |
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break; |
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case FFV1SubDescriptor: |
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av_freep(&((MXFFFV1SubDescriptor *)*ctx)->extradata); |
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break; |
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case AudioChannelLabelSubDescriptor: |
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case SoundfieldGroupLabelSubDescriptor: |
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case GroupOfSoundfieldGroupsLabelSubDescriptor: |
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av_freep(&((MXFMCASubDescriptor *)*ctx)->language); |
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av_freep(&((MXFMCASubDescriptor *)*ctx)->group_of_soundfield_groups_link_id_refs); |
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break; |
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case Sequence: |
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av_freep(&((MXFSequence *)*ctx)->structural_components_refs); |
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break; |
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case EssenceGroup: |
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av_freep(&((MXFEssenceGroup *)*ctx)->structural_components_refs); |
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break; |
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case SourcePackage: |
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case MaterialPackage: |
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av_freep(&((MXFPackage *)*ctx)->tracks_refs); |
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av_freep(&((MXFPackage *)*ctx)->name); |
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av_freep(&((MXFPackage *)*ctx)->comment_refs); |
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break; |
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case TaggedValue: |
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av_freep(&((MXFTaggedValue *)*ctx)->name); |
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av_freep(&((MXFTaggedValue *)*ctx)->value); |
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break; |
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case Track: |
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av_freep(&((MXFTrack *)*ctx)->name); |
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break; |
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case IndexTableSegment: |
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seg = (MXFIndexTableSegment *)*ctx; |
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av_freep(&seg->temporal_offset_entries); |
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av_freep(&seg->flag_entries); |
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av_freep(&seg->stream_offset_entries); |
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default: |
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break; |
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} |
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av_freep(ctx); |
|
} |
|
|
|
static int64_t klv_decode_ber_length(AVIOContext *pb) |
|
{ |
|
uint64_t size = avio_r8(pb); |
|
if (size & 0x80) { /* long form */ |
|
int bytes_num = size & 0x7f; |
|
/* SMPTE 379M 5.3.4 guarantee that bytes_num must not exceed 8 bytes */ |
|
if (bytes_num > 8) |
|
return AVERROR_INVALIDDATA; |
|
size = 0; |
|
while (bytes_num--) |
|
size = size << 8 | avio_r8(pb); |
|
} |
|
if (size > INT64_MAX) |
|
return AVERROR_INVALIDDATA; |
|
return size; |
|
} |
|
|
|
static int mxf_read_sync(AVIOContext *pb, const uint8_t *key, unsigned size) |
|
{ |
|
int i, b; |
|
for (i = 0; i < size && !avio_feof(pb); i++) { |
|
b = avio_r8(pb); |
|
if (b == key[0]) |
|
i = 0; |
|
else if (b != key[i]) |
|
i = -1; |
|
} |
|
return i == size; |
|
} |
|
|
|
static int klv_read_packet(MXFContext *mxf, KLVPacket *klv, AVIOContext *pb) |
|
{ |
|
int64_t length, pos; |
|
if (!mxf_read_sync(pb, mxf_klv_key, 4)) |
|
return AVERROR_INVALIDDATA; |
|
klv->offset = avio_tell(pb) - 4; |
|
if (klv->offset < mxf->run_in) |
|
return AVERROR_INVALIDDATA; |
|
|
|
memcpy(klv->key, mxf_klv_key, 4); |
|
avio_read(pb, klv->key + 4, 12); |
|
length = klv_decode_ber_length(pb); |
|
if (length < 0) |
|
return length; |
|
klv->length = length; |
|
pos = avio_tell(pb); |
|
if (pos > INT64_MAX - length) |
|
return AVERROR_INVALIDDATA; |
|
klv->next_klv = pos + length; |
|
return 0; |
|
} |
|
|
|
static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv, int body_sid) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < s->nb_streams; i++) { |
|
MXFTrack *track = s->streams[i]->priv_data; |
|
/* SMPTE 379M 7.3 */ |
|
if (track && (!body_sid || !track->body_sid || track->body_sid == body_sid) && !memcmp(klv->key + sizeof(mxf_essence_element_key), track->track_number, sizeof(track->track_number))) |
|
return i; |
|
} |
|
/* return 0 if only one stream, for OP Atom files with 0 as track number */ |
|
return s->nb_streams == 1 && s->streams[0]->priv_data ? 0 : -1; |
|
} |
|
|
|
static int find_body_sid_by_absolute_offset(MXFContext *mxf, int64_t offset) |
|
{ |
|
// we look for partition where the offset is placed |
|
int a, b, m; |
|
int64_t pack_ofs; |
|
|
|
a = -1; |
|
b = mxf->partitions_count; |
|
|
|
while (b - a > 1) { |
|
m = (a + b) >> 1; |
|
pack_ofs = mxf->partitions[m].pack_ofs; |
|
if (pack_ofs <= offset) |
|
a = m; |
|
else |
|
b = m; |
|
} |
|
|
|
if (a == -1) |
|
return 0; |
|
return mxf->partitions[a].body_sid; |
|
} |
|
|
|
static int mxf_get_eia608_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt, int64_t length) |
|
{ |
|
int count = avio_rb16(s->pb); |
|
int cdp_identifier, cdp_length, cdp_footer_id, ccdata_id, cc_count; |
|
int line_num, sample_coding, sample_count; |
|
int did, sdid, data_length; |
|
int i, ret; |
|
|
|
if (count > 1) |
|
av_log(s, AV_LOG_WARNING, "unsupported multiple ANC packets (%d) per KLV packet\n", count); |
|
|
|
for (i = 0; i < count; i++) { |
|
if (length < 6) { |
|
av_log(s, AV_LOG_ERROR, "error reading s436m packet %"PRId64"\n", length); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
line_num = avio_rb16(s->pb); |
|
avio_r8(s->pb); // wrapping type |
|
sample_coding = avio_r8(s->pb); |
|
sample_count = avio_rb16(s->pb); |
|
length -= 6 + 8 + sample_count; |
|
if (line_num != 9 && line_num != 11) |
|
continue; |
|
if (sample_coding == 7 || sample_coding == 8 || sample_coding == 9) { |
|
av_log(s, AV_LOG_WARNING, "unsupported s436m 10 bit sample coding\n"); |
|
continue; |
|
} |
|
if (length < 0) |
|
return AVERROR_INVALIDDATA; |
|
|
|
avio_rb32(s->pb); // array count |
|
avio_rb32(s->pb); // array elem size |
|
did = avio_r8(s->pb); |
|
sdid = avio_r8(s->pb); |
|
data_length = avio_r8(s->pb); |
|
if (did != 0x61 || sdid != 1) { |
|
av_log(s, AV_LOG_WARNING, "unsupported did or sdid: %x %x\n", did, sdid); |
|
continue; |
|
} |
|
cdp_identifier = avio_rb16(s->pb); // cdp id |
|
if (cdp_identifier != 0x9669) { |
|
av_log(s, AV_LOG_ERROR, "wrong cdp identifier %x\n", cdp_identifier); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
cdp_length = avio_r8(s->pb); |
|
avio_r8(s->pb); // cdp_frame_rate |
|
avio_r8(s->pb); // cdp_flags |
|
avio_rb16(s->pb); // cdp_hdr_sequence_cntr |
|
ccdata_id = avio_r8(s->pb); // ccdata_id |
|
if (ccdata_id != 0x72) { |
|
av_log(s, AV_LOG_ERROR, "wrong cdp data section %x\n", ccdata_id); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
cc_count = avio_r8(s->pb) & 0x1f; |
|
ret = av_get_packet(s->pb, pkt, cc_count * 3); |
|
if (ret < 0) |
|
return ret; |
|
if (cdp_length - 9 - 4 < cc_count * 3) { |
|
av_log(s, AV_LOG_ERROR, "wrong cdp size %d cc count %d\n", cdp_length, cc_count); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
avio_skip(s->pb, data_length - 9 - 4 - cc_count * 3); |
|
cdp_footer_id = avio_r8(s->pb); |
|
if (cdp_footer_id != 0x74) { |
|
av_log(s, AV_LOG_ERROR, "wrong cdp footer section %x\n", cdp_footer_id); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
avio_rb16(s->pb); // cdp_ftr_sequence_cntr |
|
avio_r8(s->pb); // packet_checksum |
|
break; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* XXX: use AVBitStreamFilter */ |
|
static int mxf_get_d10_aes3_packet(AVIOContext *pb, AVStream *st, AVPacket *pkt, int64_t length) |
|
{ |
|
const uint8_t *buf_ptr, *end_ptr; |
|
uint8_t *data_ptr; |
|
int i; |
|
|
|
if (length > 61444) /* worst case PAL 1920 samples 8 channels */ |
|
return AVERROR_INVALIDDATA; |
|
length = av_get_packet(pb, pkt, length); |
|
if (length < 0) |
|
return length; |
|
data_ptr = pkt->data; |
|
end_ptr = pkt->data + length; |
|
buf_ptr = pkt->data + 4; /* skip SMPTE 331M header */ |
|
|
|
if (st->codecpar->ch_layout.nb_channels > 8) |
|
return AVERROR_INVALIDDATA; |
|
|
|
for (; end_ptr - buf_ptr >= st->codecpar->ch_layout.nb_channels * 4; ) { |
|
for (i = 0; i < st->codecpar->ch_layout.nb_channels; i++) { |
|
uint32_t sample = bytestream_get_le32(&buf_ptr); |
|
if (st->codecpar->bits_per_coded_sample == 24) |
|
bytestream_put_le24(&data_ptr, (sample >> 4) & 0xffffff); |
|
else |
|
bytestream_put_le16(&data_ptr, (sample >> 12) & 0xffff); |
|
} |
|
// always 8 channels stored SMPTE 331M |
|
buf_ptr += 32 - st->codecpar->ch_layout.nb_channels * 4; |
|
} |
|
av_shrink_packet(pkt, data_ptr - pkt->data); |
|
return 0; |
|
} |
|
|
|
static int mxf_decrypt_triplet(AVFormatContext *s, AVPacket *pkt, KLVPacket *klv) |
|
{ |
|
static const uint8_t checkv[16] = {0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b}; |
|
MXFContext *mxf = s->priv_data; |
|
AVIOContext *pb = s->pb; |
|
int64_t end = avio_tell(pb) + klv->length; |
|
int64_t size; |
|
uint64_t orig_size; |
|
uint64_t plaintext_size; |
|
uint8_t ivec[16]; |
|
uint8_t tmpbuf[16]; |
|
int index; |
|
int body_sid; |
|
|
|
if (!mxf->aesc && s->key && s->keylen == 16) { |
|
mxf->aesc = av_aes_alloc(); |
|
if (!mxf->aesc) |
|
return AVERROR(ENOMEM); |
|
av_aes_init(mxf->aesc, s->key, 128, 1); |
|
} |
|
// crypto context |
|
size = klv_decode_ber_length(pb); |
|
if (size < 0) |
|
return size; |
|
avio_skip(pb, size); |
|
// plaintext offset |
|
klv_decode_ber_length(pb); |
|
plaintext_size = avio_rb64(pb); |
|
// source klv key |
|
klv_decode_ber_length(pb); |
|
avio_read(pb, klv->key, 16); |
|
if (!IS_KLV_KEY(klv, mxf_essence_element_key)) |
|
return AVERROR_INVALIDDATA; |
|
|
|
body_sid = find_body_sid_by_absolute_offset(mxf, klv->offset); |
|
index = mxf_get_stream_index(s, klv, body_sid); |
|
if (index < 0) |
|
return AVERROR_INVALIDDATA; |
|
// source size |
|
klv_decode_ber_length(pb); |
|
orig_size = avio_rb64(pb); |
|
if (orig_size < plaintext_size) |
|
return AVERROR_INVALIDDATA; |
|
// enc. code |
|
size = klv_decode_ber_length(pb); |
|
if (size < 32 || size - 32 < orig_size || (int)orig_size != orig_size) |
|
return AVERROR_INVALIDDATA; |
|
avio_read(pb, ivec, 16); |
|
avio_read(pb, tmpbuf, 16); |
|
if (mxf->aesc) |
|
av_aes_crypt(mxf->aesc, tmpbuf, tmpbuf, 1, ivec, 1); |
|
if (memcmp(tmpbuf, checkv, 16)) |
|
av_log(s, AV_LOG_ERROR, "probably incorrect decryption key\n"); |
|
size -= 32; |
|
size = av_get_packet(pb, pkt, size); |
|
if (size < 0) |
|
return size; |
|
else if (size < plaintext_size) |
|
return AVERROR_INVALIDDATA; |
|
size -= plaintext_size; |
|
if (mxf->aesc) |
|
av_aes_crypt(mxf->aesc, &pkt->data[plaintext_size], |
|
&pkt->data[plaintext_size], size >> 4, ivec, 1); |
|
av_shrink_packet(pkt, orig_size); |
|
pkt->stream_index = index; |
|
avio_skip(pb, end - avio_tell(pb)); |
|
return 0; |
|
} |
|
|
|
static int mxf_read_primer_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFContext *mxf = arg; |
|
int item_num = avio_rb32(pb); |
|
int item_len = avio_rb32(pb); |
|
|
|
if (item_len != 18) { |
|
avpriv_request_sample(pb, "Primer pack item length %d", item_len); |
|
return AVERROR_PATCHWELCOME; |
|
} |
|
if (item_num > 65536 || item_num < 0) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "item_num %d is too large\n", item_num); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
if (mxf->local_tags) |
|
av_log(mxf->fc, AV_LOG_VERBOSE, "Multiple primer packs\n"); |
|
av_free(mxf->local_tags); |
|
mxf->local_tags_count = 0; |
|
mxf->local_tags = av_calloc(item_num, item_len); |
|
if (!mxf->local_tags) |
|
return AVERROR(ENOMEM); |
|
mxf->local_tags_count = item_num; |
|
avio_read(pb, mxf->local_tags, item_num*item_len); |
|
return 0; |
|
} |
|
|
|
static int mxf_read_partition_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFContext *mxf = arg; |
|
AVFormatContext *s = mxf->fc; |
|
MXFPartition *partition, *tmp_part; |
|
UID op; |
|
uint64_t footer_partition; |
|
uint32_t nb_essence_containers; |
|
uint64_t this_partition; |
|
|
|
if (mxf->partitions_count >= INT_MAX / 2) |
|
return AVERROR_INVALIDDATA; |
|
|
|
av_assert0(klv_offset >= mxf->run_in); |
|
|
|
tmp_part = av_realloc_array(mxf->partitions, mxf->partitions_count + 1, sizeof(*mxf->partitions)); |
|
if (!tmp_part) |
|
return AVERROR(ENOMEM); |
|
mxf->partitions = tmp_part; |
|
|
|
if (mxf->parsing_backward) { |
|
/* insert the new partition pack in the middle |
|
* this makes the entries in mxf->partitions sorted by offset */ |
|
memmove(&mxf->partitions[mxf->last_forward_partition+1], |
|
&mxf->partitions[mxf->last_forward_partition], |
|
(mxf->partitions_count - mxf->last_forward_partition)*sizeof(*mxf->partitions)); |
|
partition = mxf->current_partition = &mxf->partitions[mxf->last_forward_partition]; |
|
} else { |
|
mxf->last_forward_partition++; |
|
partition = mxf->current_partition = &mxf->partitions[mxf->partitions_count]; |
|
} |
|
|
|
memset(partition, 0, sizeof(*partition)); |
|
mxf->partitions_count++; |
|
partition->pack_length = avio_tell(pb) - klv_offset + size; |
|
partition->pack_ofs = klv_offset; |
|
|
|
switch(uid[13]) { |
|
case 2: |
|
partition->type = Header; |
|
break; |
|
case 3: |
|
partition->type = BodyPartition; |
|
break; |
|
case 4: |
|
partition->type = Footer; |
|
break; |
|
default: |
|
av_log(mxf->fc, AV_LOG_ERROR, "unknown partition type %i\n", uid[13]); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
/* consider both footers to be closed (there is only Footer and CompleteFooter) */ |
|
partition->closed = partition->type == Footer || !(uid[14] & 1); |
|
partition->complete = uid[14] > 2; |
|
avio_skip(pb, 4); |
|
partition->kag_size = avio_rb32(pb); |
|
this_partition = avio_rb64(pb); |
|
if (this_partition != klv_offset - mxf->run_in) { |
|
av_log(mxf->fc, AV_LOG_ERROR, |
|
"this_partition %"PRId64" mismatches %"PRId64"\n", |
|
this_partition, klv_offset - mxf->run_in); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
partition->previous_partition = avio_rb64(pb); |
|
footer_partition = avio_rb64(pb); |
|
partition->header_byte_count = avio_rb64(pb); |
|
partition->index_byte_count = avio_rb64(pb); |
|
partition->index_sid = avio_rb32(pb); |
|
partition->body_offset = avio_rb64(pb); |
|
partition->body_sid = avio_rb32(pb); |
|
if (avio_read(pb, op, sizeof(UID)) != sizeof(UID)) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "Failed reading UID\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
nb_essence_containers = avio_rb32(pb); |
|
|
|
if (partition->type == Header) { |
|
char str[36]; |
|
snprintf(str, sizeof(str), "%08x.%08x.%08x.%08x", AV_RB32(&op[0]), AV_RB32(&op[4]), AV_RB32(&op[8]), AV_RB32(&op[12])); |
|
av_dict_set(&s->metadata, "operational_pattern_ul", str, 0); |
|
} |
|
|
|
if (this_partition && |
|
partition->previous_partition == this_partition) { |
|
av_log(mxf->fc, AV_LOG_ERROR, |
|
"PreviousPartition equal to ThisPartition %"PRIx64"\n", |
|
partition->previous_partition); |
|
/* override with the actual previous partition offset */ |
|
if (!mxf->parsing_backward && mxf->last_forward_partition > 1) { |
|
MXFPartition *prev = |
|
mxf->partitions + mxf->last_forward_partition - 2; |
|
partition->previous_partition = prev->pack_ofs - mxf->run_in; |
|
} |
|
/* if no previous body partition are found point to the header |
|
* partition */ |
|
if (partition->previous_partition == this_partition) |
|
partition->previous_partition = 0; |
|
av_log(mxf->fc, AV_LOG_ERROR, |
|
"Overriding PreviousPartition with %"PRIx64"\n", |
|
partition->previous_partition); |
|
} |
|
|
|
/* some files don't have FooterPartition set in every partition */ |
|
if (footer_partition) { |
|
if (mxf->footer_partition && mxf->footer_partition != footer_partition) { |
|
av_log(mxf->fc, AV_LOG_ERROR, |
|
"inconsistent FooterPartition value: %"PRIu64" != %"PRIu64"\n", |
|
mxf->footer_partition, footer_partition); |
|
} else { |
|
mxf->footer_partition = footer_partition; |
|
} |
|
} |
|
|
|
av_log(mxf->fc, AV_LOG_TRACE, |
|
"PartitionPack: ThisPartition = 0x%"PRIX64 |
|
", PreviousPartition = 0x%"PRIX64", " |
|
"FooterPartition = 0x%"PRIX64", IndexSID = %i, BodySID = %i\n", |
|
this_partition, |
|
partition->previous_partition, footer_partition, |
|
partition->index_sid, partition->body_sid); |
|
|
|
/* sanity check PreviousPartition if set */ |
|
//NOTE: this isn't actually enough, see mxf_seek_to_previous_partition() |
|
if (partition->previous_partition && |
|
mxf->run_in + partition->previous_partition >= klv_offset) { |
|
av_log(mxf->fc, AV_LOG_ERROR, |
|
"PreviousPartition points to this partition or forward\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (op[12] == 1 && op[13] == 1) mxf->op = OP1a; |
|
else if (op[12] == 1 && op[13] == 2) mxf->op = OP1b; |
|
else if (op[12] == 1 && op[13] == 3) mxf->op = OP1c; |
|
else if (op[12] == 2 && op[13] == 1) mxf->op = OP2a; |
|
else if (op[12] == 2 && op[13] == 2) mxf->op = OP2b; |
|
else if (op[12] == 2 && op[13] == 3) mxf->op = OP2c; |
|
else if (op[12] == 3 && op[13] == 1) mxf->op = OP3a; |
|
else if (op[12] == 3 && op[13] == 2) mxf->op = OP3b; |
|
else if (op[12] == 3 && op[13] == 3) mxf->op = OP3c; |
|
else if (op[12] == 64&& op[13] == 1) mxf->op = OPSONYOpt; |
|
else if (op[12] == 0x10) { |
|
/* SMPTE 390m: "There shall be exactly one essence container" |
|
* The following block deals with files that violate this, namely: |
|
* 2011_DCPTEST_24FPS.V.mxf - two ECs, OP1a |
|
* abcdefghiv016f56415e.mxf - zero ECs, OPAtom, output by Avid AirSpeed */ |
|
if (nb_essence_containers != 1) { |
|
MXFOP op = nb_essence_containers ? OP1a : OPAtom; |
|
|
|
/* only nag once */ |
|
if (!mxf->op) |
|
av_log(mxf->fc, AV_LOG_WARNING, |
|
"\"OPAtom\" with %"PRIu32" ECs - assuming %s\n", |
|
nb_essence_containers, |
|
op == OP1a ? "OP1a" : "OPAtom"); |
|
|
|
mxf->op = op; |
|
} else |
|
mxf->op = OPAtom; |
|
} else { |
|
av_log(mxf->fc, AV_LOG_ERROR, "unknown operational pattern: %02xh %02xh - guessing OP1a\n", op[12], op[13]); |
|
mxf->op = OP1a; |
|
} |
|
|
|
if (partition->kag_size <= 0 || partition->kag_size > (1 << 20)) { |
|
av_log(mxf->fc, AV_LOG_WARNING, "invalid KAGSize %"PRId32" - guessing ", |
|
partition->kag_size); |
|
|
|
if (mxf->op == OPSONYOpt) |
|
partition->kag_size = 512; |
|
else |
|
partition->kag_size = 1; |
|
|
|
av_log(mxf->fc, AV_LOG_WARNING, "%"PRId32"\n", partition->kag_size); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static uint64_t partition_score(MXFPartition *p) |
|
{ |
|
uint64_t score; |
|
if (!p) |
|
return 0; |
|
if (p->type == Footer) |
|
score = 5; |
|
else if (p->complete) |
|
score = 4; |
|
else if (p->closed) |
|
score = 3; |
|
else |
|
score = 1; |
|
return (score << 60) | ((uint64_t)p->pack_ofs >> 4); |
|
} |
|
|
|
static int mxf_add_metadata_set(MXFContext *mxf, MXFMetadataSet **metadata_set, enum MXFMetadataSetType type) |
|
{ |
|
MXFMetadataSetGroup *mg = &mxf->metadata_set_groups[type]; |
|
int ret; |
|
|
|
// Index Table is special because it might be added manually without |
|
// partition and we iterate thorugh all instances of them. Also some files |
|
// use the same Instance UID for different index tables... |
|
if (type != IndexTableSegment) { |
|
for (int i = 0; i < mg->metadata_sets_count; i++) { |
|
if (!memcmp((*metadata_set)->uid, mg->metadata_sets[i]->uid, 16)) { |
|
uint64_t old_s = mg->metadata_sets[i]->partition_score; |
|
uint64_t new_s = (*metadata_set)->partition_score; |
|
if (old_s > new_s) { |
|
mxf_free_metadataset(metadata_set, type); |
|
return 0; |
|
} |
|
} |
|
} |
|
} |
|
|
|
ret = av_dynarray_add_nofree(&mg->metadata_sets, &mg->metadata_sets_count, *metadata_set); |
|
if (ret < 0) { |
|
mxf_free_metadataset(metadata_set, type); |
|
return ret; |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_cryptographic_context(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFCryptoContext *cryptocontext = arg; |
|
if (size != 16) |
|
return AVERROR_INVALIDDATA; |
|
if (IS_KLV_KEY(uid, mxf_crypto_source_container_ul)) |
|
avio_read(pb, cryptocontext->source_container_ul, 16); |
|
return 0; |
|
} |
|
|
|
static int mxf_read_strong_ref_array(AVIOContext *pb, UID **refs, int *count) |
|
{ |
|
int64_t ret; |
|
unsigned c = avio_rb32(pb); |
|
|
|
//avio_read() used int |
|
if (c > INT_MAX / sizeof(UID)) |
|
return AVERROR_PATCHWELCOME; |
|
*count = c; |
|
|
|
av_free(*refs); |
|
*refs = av_malloc_array(*count, sizeof(UID)); |
|
if (!*refs) { |
|
*count = 0; |
|
return AVERROR(ENOMEM); |
|
} |
|
avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */ |
|
ret = avio_read(pb, (uint8_t *)*refs, *count * sizeof(UID)); |
|
if (ret != *count * sizeof(UID)) { |
|
*count = ret < 0 ? 0 : ret / sizeof(UID); |
|
return ret < 0 ? ret : AVERROR_INVALIDDATA; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static inline int mxf_read_us_ascii_string(AVIOContext *pb, int size, char** str) |
|
{ |
|
int ret; |
|
size_t buf_size; |
|
|
|
if (size < 0 || size > INT_MAX - 1) |
|
return AVERROR(EINVAL); |
|
|
|
buf_size = size + 1; |
|
av_free(*str); |
|
*str = av_malloc(buf_size); |
|
if (!*str) |
|
return AVERROR(ENOMEM); |
|
|
|
ret = avio_get_str(pb, size, *str, buf_size); |
|
|
|
if (ret < 0) { |
|
av_freep(str); |
|
return ret; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static inline int mxf_read_utf16_string(AVIOContext *pb, int size, char** str, int be) |
|
{ |
|
int ret; |
|
size_t buf_size; |
|
|
|
if (size < 0 || size > INT_MAX/2) |
|
return AVERROR(EINVAL); |
|
|
|
buf_size = size + size / 2 + 1; |
|
av_free(*str); |
|
*str = av_malloc(buf_size); |
|
if (!*str) |
|
return AVERROR(ENOMEM); |
|
|
|
if (be) |
|
ret = avio_get_str16be(pb, size, *str, buf_size); |
|
else |
|
ret = avio_get_str16le(pb, size, *str, buf_size); |
|
|
|
if (ret < 0) { |
|
av_freep(str); |
|
return ret; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
#define READ_STR16(type, big_endian) \ |
|
static int mxf_read_utf16 ## type ##_string(AVIOContext *pb, int size, char** str) \ |
|
{ \ |
|
return mxf_read_utf16_string(pb, size, str, big_endian); \ |
|
} |
|
READ_STR16(be, 1) |
|
READ_STR16(le, 0) |
|
#undef READ_STR16 |
|
|
|
static int mxf_read_content_storage(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFContext *mxf = arg; |
|
switch (tag) { |
|
case 0x1901: |
|
if (mxf->packages_refs) |
|
av_log(mxf->fc, AV_LOG_VERBOSE, "Multiple packages_refs\n"); |
|
return mxf_read_strong_ref_array(pb, &mxf->packages_refs, &mxf->packages_count); |
|
case 0x1902: |
|
return mxf_read_strong_ref_array(pb, &mxf->essence_container_data_refs, &mxf->essence_container_data_count); |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_source_clip(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFStructuralComponent *source_clip = arg; |
|
switch(tag) { |
|
case 0x0202: |
|
source_clip->duration = avio_rb64(pb); |
|
break; |
|
case 0x1201: |
|
source_clip->start_position = avio_rb64(pb); |
|
break; |
|
case 0x1101: |
|
/* UMID, only get last 16 bytes */ |
|
avio_read(pb, source_clip->source_package_ul, 16); |
|
avio_read(pb, source_clip->source_package_uid, 16); |
|
break; |
|
case 0x1102: |
|
source_clip->source_track_id = avio_rb32(pb); |
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_timecode_component(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFTimecodeComponent *mxf_timecode = arg; |
|
switch(tag) { |
|
case 0x1501: |
|
mxf_timecode->start_frame = avio_rb64(pb); |
|
break; |
|
case 0x1502: |
|
mxf_timecode->rate = (AVRational){avio_rb16(pb), 1}; |
|
break; |
|
case 0x1503: |
|
mxf_timecode->drop_frame = avio_r8(pb); |
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_pulldown_component(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFPulldownComponent *mxf_pulldown = arg; |
|
switch(tag) { |
|
case 0x0d01: |
|
avio_read(pb, mxf_pulldown->input_segment_ref, 16); |
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_track(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFTrack *track = arg; |
|
switch(tag) { |
|
case 0x4801: |
|
track->track_id = avio_rb32(pb); |
|
break; |
|
case 0x4804: |
|
avio_read(pb, track->track_number, 4); |
|
break; |
|
case 0x4802: |
|
mxf_read_utf16be_string(pb, size, &track->name); |
|
break; |
|
case 0x4b01: |
|
track->edit_rate.num = avio_rb32(pb); |
|
track->edit_rate.den = avio_rb32(pb); |
|
break; |
|
case 0x4803: |
|
avio_read(pb, track->sequence_ref, 16); |
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_sequence(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFSequence *sequence = arg; |
|
switch(tag) { |
|
case 0x0202: |
|
sequence->duration = avio_rb64(pb); |
|
break; |
|
case 0x0201: |
|
avio_read(pb, sequence->data_definition_ul, 16); |
|
break; |
|
case 0x4b02: |
|
sequence->origin = avio_r8(pb); |
|
break; |
|
case 0x1001: |
|
return mxf_read_strong_ref_array(pb, &sequence->structural_components_refs, |
|
&sequence->structural_components_count); |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_essence_group(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFEssenceGroup *essence_group = arg; |
|
switch (tag) { |
|
case 0x0202: |
|
essence_group->duration = avio_rb64(pb); |
|
break; |
|
case 0x0501: |
|
return mxf_read_strong_ref_array(pb, &essence_group->structural_components_refs, |
|
&essence_group->structural_components_count); |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_package(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFPackage *package = arg; |
|
switch(tag) { |
|
case 0x4403: |
|
return mxf_read_strong_ref_array(pb, &package->tracks_refs, |
|
&package->tracks_count); |
|
case 0x4401: |
|
/* UMID */ |
|
avio_read(pb, package->package_ul, 16); |
|
avio_read(pb, package->package_uid, 16); |
|
break; |
|
case 0x4701: |
|
avio_read(pb, package->descriptor_ref, 16); |
|
break; |
|
case 0x4402: |
|
return mxf_read_utf16be_string(pb, size, &package->name); |
|
case 0x4406: |
|
return mxf_read_strong_ref_array(pb, &package->comment_refs, |
|
&package->comment_count); |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_essence_container_data(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFEssenceContainerData *essence_data = arg; |
|
switch(tag) { |
|
case 0x2701: |
|
/* linked package umid UMID */ |
|
avio_read(pb, essence_data->package_ul, 16); |
|
avio_read(pb, essence_data->package_uid, 16); |
|
break; |
|
case 0x3f06: |
|
essence_data->index_sid = avio_rb32(pb); |
|
break; |
|
case 0x3f07: |
|
essence_data->body_sid = avio_rb32(pb); |
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_index_entry_array(AVIOContext *pb, MXFIndexTableSegment *segment) |
|
{ |
|
int i, length; |
|
uint32_t nb_index_entries; |
|
|
|
if (segment->temporal_offset_entries) |
|
return AVERROR_INVALIDDATA; |
|
|
|
nb_index_entries = avio_rb32(pb); |
|
if (nb_index_entries > INT_MAX) |
|
return AVERROR_INVALIDDATA; |
|
segment->nb_index_entries = nb_index_entries; |
|
|
|
length = avio_rb32(pb); |
|
if(segment->nb_index_entries && length < 11) |
|
return AVERROR_INVALIDDATA; |
|
|
|
if (!FF_ALLOC_TYPED_ARRAY(segment->temporal_offset_entries, segment->nb_index_entries) || |
|
!FF_ALLOC_TYPED_ARRAY(segment->flag_entries , segment->nb_index_entries) || |
|
!FF_ALLOC_TYPED_ARRAY(segment->stream_offset_entries , segment->nb_index_entries)) { |
|
av_freep(&segment->temporal_offset_entries); |
|
av_freep(&segment->flag_entries); |
|
return AVERROR(ENOMEM); |
|
} |
|
|
|
for (i = 0; i < segment->nb_index_entries; i++) { |
|
if(avio_feof(pb)) |
|
return AVERROR_INVALIDDATA; |
|
segment->temporal_offset_entries[i] = avio_r8(pb); |
|
avio_r8(pb); /* KeyFrameOffset */ |
|
segment->flag_entries[i] = avio_r8(pb); |
|
segment->stream_offset_entries[i] = avio_rb64(pb); |
|
avio_skip(pb, length - 11); |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_index_table_segment(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFIndexTableSegment *segment = arg; |
|
switch(tag) { |
|
case 0x3F05: |
|
segment->edit_unit_byte_count = avio_rb32(pb); |
|
av_log(NULL, AV_LOG_TRACE, "EditUnitByteCount %d\n", segment->edit_unit_byte_count); |
|
break; |
|
case 0x3F06: |
|
segment->index_sid = avio_rb32(pb); |
|
av_log(NULL, AV_LOG_TRACE, "IndexSID %d\n", segment->index_sid); |
|
break; |
|
case 0x3F07: |
|
segment->body_sid = avio_rb32(pb); |
|
av_log(NULL, AV_LOG_TRACE, "BodySID %d\n", segment->body_sid); |
|
break; |
|
case 0x3F0A: |
|
av_log(NULL, AV_LOG_TRACE, "IndexEntryArray found\n"); |
|
return mxf_read_index_entry_array(pb, segment); |
|
case 0x3F0B: |
|
segment->index_edit_rate.num = avio_rb32(pb); |
|
segment->index_edit_rate.den = avio_rb32(pb); |
|
av_log(NULL, AV_LOG_TRACE, "IndexEditRate %d/%d\n", segment->index_edit_rate.num, |
|
segment->index_edit_rate.den); |
|
break; |
|
case 0x3F0C: |
|
segment->index_start_position = avio_rb64(pb); |
|
av_log(NULL, AV_LOG_TRACE, "IndexStartPosition %"PRId64"\n", segment->index_start_position); |
|
break; |
|
case 0x3F0D: |
|
segment->index_duration = avio_rb64(pb); |
|
av_log(NULL, AV_LOG_TRACE, "IndexDuration %"PRId64"\n", segment->index_duration); |
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
static void mxf_read_pixel_layout(AVIOContext *pb, MXFDescriptor *descriptor) |
|
{ |
|
int code, value, ofs = 0; |
|
char layout[16] = {0}; /* not for printing, may end up not terminated on purpose */ |
|
|
|
do { |
|
code = avio_r8(pb); |
|
value = avio_r8(pb); |
|
av_log(NULL, AV_LOG_TRACE, "pixel layout: code %#x\n", code); |
|
|
|
if (ofs <= 14) { |
|
layout[ofs++] = code; |
|
layout[ofs++] = value; |
|
} else |
|
break; /* don't read byte by byte on sneaky files filled with lots of non-zeroes */ |
|
} while (code != 0); /* SMPTE 377M E.2.46 */ |
|
|
|
ff_mxf_decode_pixel_layout(layout, &descriptor->pix_fmt); |
|
} |
|
|
|
static int mxf_read_generic_descriptor(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFDescriptor *descriptor = arg; |
|
int entry_count, entry_size; |
|
|
|
switch(tag) { |
|
case 0x3F01: |
|
return mxf_read_strong_ref_array(pb, &descriptor->file_descriptors_refs, |
|
&descriptor->file_descriptors_count); |
|
case 0x3002: /* ContainerDuration */ |
|
descriptor->duration = avio_rb64(pb); |
|
break; |
|
case 0x3004: |
|
avio_read(pb, descriptor->essence_container_ul, 16); |
|
break; |
|
case 0x3005: |
|
avio_read(pb, descriptor->codec_ul, 16); |
|
break; |
|
case 0x3006: |
|
descriptor->linked_track_id = avio_rb32(pb); |
|
break; |
|
case 0x3201: /* PictureEssenceCoding */ |
|
avio_read(pb, descriptor->essence_codec_ul, 16); |
|
break; |
|
case 0x3203: |
|
descriptor->width = avio_rb32(pb); |
|
break; |
|
case 0x3202: |
|
descriptor->height = avio_rb32(pb); |
|
break; |
|
case 0x320C: |
|
descriptor->frame_layout = avio_r8(pb); |
|
break; |
|
case 0x320D: |
|
entry_count = avio_rb32(pb); |
|
entry_size = avio_rb32(pb); |
|
if (entry_size == 4) { |
|
if (entry_count > 0) |
|
descriptor->video_line_map[0] = avio_rb32(pb); |
|
else |
|
descriptor->video_line_map[0] = 0; |
|
if (entry_count > 1) |
|
descriptor->video_line_map[1] = avio_rb32(pb); |
|
else |
|
descriptor->video_line_map[1] = 0; |
|
} else |
|
av_log(NULL, AV_LOG_WARNING, "VideoLineMap element size %d currently not supported\n", entry_size); |
|
break; |
|
case 0x320E: |
|
descriptor->aspect_ratio.num = avio_rb32(pb); |
|
descriptor->aspect_ratio.den = avio_rb32(pb); |
|
break; |
|
case 0x3210: |
|
avio_read(pb, descriptor->color_trc_ul, 16); |
|
break; |
|
case 0x3212: |
|
descriptor->field_dominance = avio_r8(pb); |
|
break; |
|
case 0x3219: |
|
avio_read(pb, descriptor->color_primaries_ul, 16); |
|
break; |
|
case 0x321A: |
|
avio_read(pb, descriptor->color_space_ul, 16); |
|
break; |
|
case 0x3301: |
|
descriptor->component_depth = avio_rb32(pb); |
|
break; |
|
case 0x3302: |
|
descriptor->horiz_subsampling = avio_rb32(pb); |
|
break; |
|
case 0x3304: |
|
descriptor->black_ref_level = avio_rb32(pb); |
|
break; |
|
case 0x3305: |
|
descriptor->white_ref_level = avio_rb32(pb); |
|
break; |
|
case 0x3306: |
|
descriptor->color_range = avio_rb32(pb); |
|
break; |
|
case 0x3308: |
|
descriptor->vert_subsampling = avio_rb32(pb); |
|
break; |
|
case 0x3D03: |
|
descriptor->sample_rate.num = avio_rb32(pb); |
|
descriptor->sample_rate.den = avio_rb32(pb); |
|
break; |
|
case 0x3D06: /* SoundEssenceCompression */ |
|
avio_read(pb, descriptor->essence_codec_ul, 16); |
|
break; |
|
case 0x3D07: |
|
descriptor->channels = avio_rb32(pb); |
|
break; |
|
case 0x3D01: |
|
descriptor->bits_per_sample = avio_rb32(pb); |
|
break; |
|
case 0x3401: |
|
mxf_read_pixel_layout(pb, descriptor); |
|
break; |
|
default: |
|
/* Private uid used by SONY C0023S01.mxf */ |
|
if (IS_KLV_KEY(uid, mxf_sony_mpeg4_extradata)) { |
|
if (descriptor->extradata) |
|
av_log(NULL, AV_LOG_WARNING, "Duplicate sony_mpeg4_extradata\n"); |
|
av_free(descriptor->extradata); |
|
descriptor->extradata_size = 0; |
|
descriptor->extradata = av_malloc(size); |
|
if (!descriptor->extradata) |
|
return AVERROR(ENOMEM); |
|
descriptor->extradata_size = size; |
|
avio_read(pb, descriptor->extradata, size); |
|
} |
|
if (IS_KLV_KEY(uid, mxf_jp2k_rsiz)) { |
|
uint32_t rsiz = avio_rb16(pb); |
|
if (rsiz == AV_PROFILE_JPEG2000_DCINEMA_2K || |
|
rsiz == AV_PROFILE_JPEG2000_DCINEMA_4K) |
|
descriptor->pix_fmt = AV_PIX_FMT_XYZ12; |
|
} |
|
if (IS_KLV_KEY(uid, mxf_mastering_display_prefix)) { |
|
if (!descriptor->mastering) { |
|
descriptor->mastering = av_mastering_display_metadata_alloc(); |
|
if (!descriptor->mastering) |
|
return AVERROR(ENOMEM); |
|
} |
|
if (IS_KLV_KEY(uid, mxf_mastering_display_uls[0])) { |
|
for (int i = 0; i < 3; i++) { |
|
/* Order: large x, large y, other (i.e. RGB) */ |
|
descriptor->mastering->display_primaries[i][0] = av_make_q(avio_rb16(pb), FF_MXF_MASTERING_CHROMA_DEN); |
|
descriptor->mastering->display_primaries[i][1] = av_make_q(avio_rb16(pb), FF_MXF_MASTERING_CHROMA_DEN); |
|
} |
|
/* Check we have seen mxf_mastering_display_white_point_chromaticity */ |
|
if (descriptor->mastering->white_point[0].den != 0) |
|
descriptor->mastering->has_primaries = 1; |
|
} |
|
if (IS_KLV_KEY(uid, mxf_mastering_display_uls[1])) { |
|
descriptor->mastering->white_point[0] = av_make_q(avio_rb16(pb), FF_MXF_MASTERING_CHROMA_DEN); |
|
descriptor->mastering->white_point[1] = av_make_q(avio_rb16(pb), FF_MXF_MASTERING_CHROMA_DEN); |
|
/* Check we have seen mxf_mastering_display_primaries */ |
|
if (descriptor->mastering->display_primaries[0][0].den != 0) |
|
descriptor->mastering->has_primaries = 1; |
|
} |
|
if (IS_KLV_KEY(uid, mxf_mastering_display_uls[2])) { |
|
descriptor->mastering->max_luminance = av_make_q(avio_rb32(pb), FF_MXF_MASTERING_LUMA_DEN); |
|
/* Check we have seen mxf_mastering_display_minimum_luminance */ |
|
if (descriptor->mastering->min_luminance.den != 0) |
|
descriptor->mastering->has_luminance = 1; |
|
} |
|
if (IS_KLV_KEY(uid, mxf_mastering_display_uls[3])) { |
|
descriptor->mastering->min_luminance = av_make_q(avio_rb32(pb), FF_MXF_MASTERING_LUMA_DEN); |
|
/* Check we have seen mxf_mastering_display_maximum_luminance */ |
|
if (descriptor->mastering->max_luminance.den != 0) |
|
descriptor->mastering->has_luminance = 1; |
|
} |
|
} |
|
if (IS_KLV_KEY(uid, mxf_apple_coll_prefix)) { |
|
if (!descriptor->coll) { |
|
descriptor->coll = av_content_light_metadata_alloc(&descriptor->coll_size); |
|
if (!descriptor->coll) |
|
return AVERROR(ENOMEM); |
|
} |
|
if (IS_KLV_KEY(uid, mxf_apple_coll_max_cll)) { |
|
descriptor->coll->MaxCLL = avio_rb16(pb); |
|
} |
|
if (IS_KLV_KEY(uid, mxf_apple_coll_max_fall)) { |
|
descriptor->coll->MaxFALL = avio_rb16(pb); |
|
} |
|
} |
|
|
|
if (IS_KLV_KEY(uid, mxf_sub_descriptor)) |
|
return mxf_read_strong_ref_array(pb, &descriptor->sub_descriptors_refs, &descriptor->sub_descriptors_count); |
|
|
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_mca_sub_descriptor(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFMCASubDescriptor *mca_sub_descriptor = arg; |
|
|
|
if (IS_KLV_KEY(uid, mxf_mca_label_dictionary_id)) |
|
avio_read(pb, mca_sub_descriptor->mca_label_dictionary_id, 16); |
|
|
|
if (IS_KLV_KEY(uid, mxf_mca_link_id)) |
|
avio_read(pb, mca_sub_descriptor->mca_link_id, 16); |
|
|
|
if (IS_KLV_KEY(uid, mxf_soundfield_group_link_id)) |
|
avio_read(pb, mca_sub_descriptor->soundfield_group_link_id, 16); |
|
|
|
if (IS_KLV_KEY(uid, mxf_group_of_soundfield_groups_link_id)) |
|
return mxf_read_strong_ref_array(pb, &mca_sub_descriptor->group_of_soundfield_groups_link_id_refs, &mca_sub_descriptor->group_of_soundfield_groups_link_id_count); |
|
|
|
if (IS_KLV_KEY(uid, mxf_mca_channel_id)) |
|
mca_sub_descriptor->mca_channel_id = avio_rb32(pb); |
|
|
|
if (IS_KLV_KEY(uid, mxf_mca_rfc5646_spoken_language)) |
|
return mxf_read_us_ascii_string(pb, size, &mca_sub_descriptor->language); |
|
|
|
return 0; |
|
} |
|
|
|
static int mxf_read_ffv1_sub_descriptor(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFFFV1SubDescriptor *ffv1_sub_descriptor = arg; |
|
|
|
if (IS_KLV_KEY(uid, mxf_ffv1_extradata) && size <= INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE ) { |
|
if (ffv1_sub_descriptor->extradata) |
|
av_log(NULL, AV_LOG_WARNING, "Duplicate ffv1_extradata\n"); |
|
av_free(ffv1_sub_descriptor->extradata); |
|
ffv1_sub_descriptor->extradata_size = 0; |
|
ffv1_sub_descriptor->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE); |
|
if (!ffv1_sub_descriptor->extradata) |
|
return AVERROR(ENOMEM); |
|
ffv1_sub_descriptor->extradata_size = size; |
|
avio_read(pb, ffv1_sub_descriptor->extradata, size); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mxf_read_indirect_value(void *arg, AVIOContext *pb, int size) |
|
{ |
|
MXFTaggedValue *tagged_value = arg; |
|
uint8_t key[17]; |
|
|
|
if (size <= 17) |
|
return 0; |
|
|
|
avio_read(pb, key, 17); |
|
/* TODO: handle other types of of indirect values */ |
|
if (memcmp(key, mxf_indirect_value_utf16le, 17) == 0) { |
|
return mxf_read_utf16le_string(pb, size - 17, &tagged_value->value); |
|
} else if (memcmp(key, mxf_indirect_value_utf16be, 17) == 0) { |
|
return mxf_read_utf16be_string(pb, size - 17, &tagged_value->value); |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_tagged_value(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFTaggedValue *tagged_value = arg; |
|
switch (tag){ |
|
case 0x5001: |
|
return mxf_read_utf16be_string(pb, size, &tagged_value->name); |
|
case 0x5003: |
|
return mxf_read_indirect_value(tagged_value, pb, size); |
|
} |
|
return 0; |
|
} |
|
|
|
/* |
|
* Match an uid independently of the version byte and up to len common bytes |
|
* Returns: boolean |
|
*/ |
|
static int mxf_match_uid(const UID key, const uint8_t uid_prefix[], int len) |
|
{ |
|
int i; |
|
for (i = 0; i < len; i++) { |
|
if (i != 7 && key[i] != uid_prefix[i]) |
|
return 0; |
|
} |
|
return 1; |
|
} |
|
|
|
static const MXFCodecUL *mxf_get_codec_ul(const MXFCodecUL *uls, UID *uid) |
|
{ |
|
while (uls->uid[0]) { |
|
if(mxf_match_uid(uls->uid, *uid, uls->matching_len)) |
|
break; |
|
uls++; |
|
} |
|
return uls; |
|
} |
|
|
|
static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMetadataSetType type) |
|
{ |
|
MXFMetadataSetGroup *mg = &mxf->metadata_set_groups[type]; |
|
|
|
if (!strong_ref) |
|
return NULL; |
|
for (int i = mg->metadata_sets_count - 1; i >= 0; i--) |
|
if (!memcmp(*strong_ref, mg->metadata_sets[i]->uid, 16)) |
|
return mg->metadata_sets[i]; |
|
|
|
return NULL; |
|
} |
|
|
|
static const MXFCodecUL mxf_picture_essence_container_uls[] = { |
|
// video essence container uls |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 }, 14, AV_CODEC_ID_JPEG2000, NULL, 14, J2KWrap }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x10,0x60,0x01 }, 14, AV_CODEC_ID_H264, NULL, 15 }, /* H.264 */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 }, 14, AV_CODEC_ID_DNXHD, NULL, 14 }, /* VC-3 */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x12,0x01,0x00 }, 14, AV_CODEC_ID_VC1, NULL, 14 }, /* VC-1 */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x14,0x01,0x00 }, 14, AV_CODEC_ID_TIFF, NULL, 14 }, /* TIFF */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x15,0x01,0x00 }, 14, AV_CODEC_ID_DIRAC, NULL, 14 }, /* VC-2 */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x1b,0x01,0x00 }, 14, AV_CODEC_ID_CFHD, NULL, 14 }, /* VC-5 */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x1c,0x01,0x00 }, 14, AV_CODEC_ID_PRORES, NULL, 14 }, /* ProRes */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, 14, AV_CODEC_ID_MPEG2VIDEO, NULL, 15 }, /* MPEG-ES */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x04,0x01 }, 14, AV_CODEC_ID_MPEG2VIDEO, NULL, 15, D10D11Wrap }, /* SMPTE D-10 mapping */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x0d,0x01,0x03,0x01,0x02,0x23,0x01,0x00 }, 14, AV_CODEC_ID_FFV1, NULL, 14 }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, 14, AV_CODEC_ID_DVVIDEO, NULL, 15 }, /* DV 625 25mbps */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x05,0x00,0x00 }, 14, AV_CODEC_ID_RAWVIDEO, NULL, 15, RawVWrap }, /* uncompressed picture */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0a,0x0e,0x0f,0x03,0x01,0x02,0x20,0x01,0x01 }, 15, AV_CODEC_ID_HQ_HQA }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0a,0x0e,0x0f,0x03,0x01,0x02,0x20,0x02,0x01 }, 15, AV_CODEC_ID_HQX }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0a,0x0e,0x15,0x00,0x04,0x02,0x10,0x00,0x01 }, 16, AV_CODEC_ID_HEVC, NULL, 15 }, /* Canon XF-HEVC */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0xff,0x4b,0x46,0x41,0x41,0x00,0x0d,0x4d,0x4f }, 14, AV_CODEC_ID_RAWVIDEO }, /* Legacy ?? Uncompressed Picture */ |
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE }, |
|
}; |
|
|
|
/* EC ULs for intra-only formats */ |
|
static const MXFCodecUL mxf_intra_only_essence_container_uls[] = { |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x00,0x00 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* MXF-GC SMPTE D-10 mappings */ |
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE }, |
|
}; |
|
|
|
/* intra-only PictureEssenceCoding ULs, where no corresponding EC UL exists */ |
|
static const MXFCodecUL mxf_intra_only_picture_essence_coding_uls[] = { |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x00,0x00 }, 14, AV_CODEC_ID_H264 }, /* H.264/MPEG-4 AVC Intra Profiles */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 }, 14, AV_CODEC_ID_JPEG2000 }, /* JPEG 2000 code stream */ |
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE }, |
|
}; |
|
|
|
/* actual coded width for AVC-Intra to allow selecting correct SPS/PPS */ |
|
static const MXFCodecUL mxf_intra_only_picture_coded_width[] = { |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 16, 1440 }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 16, 1440 }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 16, 1440 }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 16, 1440 }, |
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, 0 }, |
|
}; |
|
|
|
static const MXFCodecUL mxf_sound_essence_container_uls[] = { |
|
// sound essence container uls |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, 14, AV_CODEC_ID_PCM_S16LE, NULL, 14, RawAWrap }, /* BWF */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x04,0x40,0x01 }, 14, AV_CODEC_ID_MP2, NULL, 15 }, /* MPEG-ES */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, 14, AV_CODEC_ID_PCM_S16LE, NULL, 13 }, /* D-10 Mapping 50Mbps PAL Extended Template */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0xff,0x4b,0x46,0x41,0x41,0x00,0x0d,0x4d,0x4F }, 14, AV_CODEC_ID_PCM_S16LE }, /* 0001GL00.MXF.A1.mxf_opatom.mxf */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x03,0x04,0x02,0x02,0x02,0x03,0x03,0x01,0x00 }, 14, AV_CODEC_ID_AAC }, /* MPEG-2 AAC ADTS (legacy) */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x0d,0x01,0x03,0x01,0x02,0x16,0x00,0x00 }, 14, AV_CODEC_ID_AAC, NULL, 14 }, /* AAC ADIF (SMPTE 381-4) */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x0d,0x01,0x03,0x01,0x02,0x17,0x00,0x00 }, 14, AV_CODEC_ID_AAC, NULL, 14 }, /* AAC ADTS (SMPTE 381-4) */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x0d,0x01,0x03,0x01,0x02,0x18,0x00,0x00 }, 14, AV_CODEC_ID_AAC, NULL, 14 }, /* AAC LATM/LOAS (SMPTE 381-4) */ |
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE }, |
|
}; |
|
|
|
static const MXFCodecUL mxf_data_essence_container_uls[] = { |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x09,0x0d,0x01,0x03,0x01,0x02,0x0d,0x00,0x00 }, 16, AV_CODEC_ID_NONE, "vbi_smpte_436M", 11 }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x09,0x0d,0x01,0x03,0x01,0x02,0x0e,0x00,0x00 }, 16, AV_CODEC_ID_NONE, "vbi_vanc_smpte_436M", 11 }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x09,0x0d,0x01,0x03,0x01,0x02,0x13,0x01,0x01 }, 16, AV_CODEC_ID_TTML }, |
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE }, |
|
}; |
|
|
|
typedef struct MXFChannelOrderingUL { |
|
UID uid; |
|
uint64_t layout_mask; |
|
enum AVAudioServiceType service_type; |
|
} MXFChannelOrderingUL; |
|
|
|
static const MXFChannelOrderingUL mxf_channel_ordering[] = { |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x01,0x00,0x00,0x00,0x00 }, AV_CH_FRONT_LEFT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Left |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x02,0x00,0x00,0x00,0x00 }, AV_CH_FRONT_RIGHT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Right |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x03,0x00,0x00,0x00,0x00 }, AV_CH_FRONT_CENTER, AV_AUDIO_SERVICE_TYPE_MAIN }, // Center |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x04,0x00,0x00,0x00,0x00 }, AV_CH_LOW_FREQUENCY, AV_AUDIO_SERVICE_TYPE_MAIN }, // Low Frequency Effects |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x05,0x00,0x00,0x00,0x00 }, AV_CH_SIDE_LEFT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Left Surround |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x06,0x00,0x00,0x00,0x00 }, AV_CH_SIDE_RIGHT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Right Surround |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x07,0x00,0x00,0x00,0x00 }, AV_CH_SIDE_LEFT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Left Side Surround |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x08,0x00,0x00,0x00,0x00 }, AV_CH_SIDE_RIGHT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Right Side Surround |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x09,0x00,0x00,0x00,0x00 }, AV_CH_BACK_LEFT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Left Rear Surround |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x0a,0x00,0x00,0x00,0x00 }, AV_CH_BACK_RIGHT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Right Rear Surround |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x0b,0x00,0x00,0x00,0x00 }, AV_CH_FRONT_LEFT_OF_CENTER, AV_AUDIO_SERVICE_TYPE_MAIN }, // Left Center |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x0c,0x00,0x00,0x00,0x00 }, AV_CH_FRONT_RIGHT_OF_CENTER, AV_AUDIO_SERVICE_TYPE_MAIN }, // Right Center |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x0d,0x00,0x00,0x00,0x00 }, AV_CH_BACK_CENTER, AV_AUDIO_SERVICE_TYPE_MAIN }, // Center Surround |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x0e,0x00,0x00,0x00,0x00 }, AV_CH_FRONT_CENTER, AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED }, // Hearing impaired audio channel |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x0f,0x00,0x00,0x00,0x00 }, AV_CH_FRONT_CENTER, AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED }, // Visually impaired narrative audio channel |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x20,0x03,0x00,0x00,0x00 }, AV_CH_STEREO_LEFT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Left Total |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x20,0x04,0x00,0x00,0x00 }, AV_CH_STEREO_RIGHT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Right Total |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x01,0x00,0x00 }, AV_CH_TOP_FRONT_LEFT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Left Height |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x02,0x00,0x00 }, AV_CH_TOP_FRONT_RIGHT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Right Height |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x03,0x00,0x00 }, AV_CH_TOP_FRONT_CENTER, AV_AUDIO_SERVICE_TYPE_MAIN }, // Center Height |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x04,0x00,0x00 }, AV_CH_TOP_SIDE_LEFT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Left Surround Height |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x05,0x00,0x00 }, AV_CH_TOP_SIDE_RIGHT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Right Surround Height |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x06,0x00,0x00 }, AV_CH_TOP_SIDE_LEFT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Left Side Surround Height |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x07,0x00,0x00 }, AV_CH_TOP_SIDE_RIGHT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Right Side Surround Height |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x08,0x00,0x00 }, AV_CH_TOP_BACK_LEFT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Left Rear Surround Height |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x09,0x00,0x00 }, AV_CH_TOP_BACK_RIGHT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Right Rear Surround Height |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x0a,0x00,0x00 }, AV_CH_TOP_SIDE_LEFT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Left Top Surround |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x0b,0x00,0x00 }, AV_CH_TOP_SIDE_RIGHT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Right Top Surround |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x0c,0x00,0x00 }, AV_CH_TOP_CENTER, AV_AUDIO_SERVICE_TYPE_MAIN }, // Top Surround |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x0d,0x00,0x00 }, AV_CH_LOW_FREQUENCY, AV_AUDIO_SERVICE_TYPE_MAIN }, // Left Front Subwoofer |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x0e,0x00,0x00 }, AV_CH_LOW_FREQUENCY_2, AV_AUDIO_SERVICE_TYPE_MAIN }, // Right Front Subwoofer |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x0f,0x00,0x00 }, AV_CH_TOP_BACK_CENTER, AV_AUDIO_SERVICE_TYPE_MAIN }, // Center Rear Height |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x10,0x00,0x00 }, AV_CH_BACK_CENTER, AV_AUDIO_SERVICE_TYPE_MAIN }, // Center Rear |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x11,0x00,0x00 }, AV_CH_BOTTOM_FRONT_LEFT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Left Below |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x12,0x00,0x00 }, AV_CH_BOTTOM_FRONT_RIGHT, AV_AUDIO_SERVICE_TYPE_MAIN }, // Right Below |
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0d,0x03,0x02,0x01,0x30,0x01,0x13,0x00,0x00 }, AV_CH_BOTTOM_FRONT_CENTER, AV_AUDIO_SERVICE_TYPE_MAIN }, // Center Below |
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_AUDIO_SERVICE_TYPE_NB }, |
|
}; |
|
|
|
static MXFWrappingScheme mxf_get_wrapping_kind(UID *essence_container_ul) |
|
{ |
|
int val; |
|
const MXFCodecUL *codec_ul; |
|
|
|
codec_ul = mxf_get_codec_ul(mxf_picture_essence_container_uls, essence_container_ul); |
|
if (!codec_ul->uid[0]) |
|
codec_ul = mxf_get_codec_ul(mxf_sound_essence_container_uls, essence_container_ul); |
|
if (!codec_ul->uid[0]) |
|
codec_ul = mxf_get_codec_ul(mxf_data_essence_container_uls, essence_container_ul); |
|
if (!codec_ul->uid[0] || !codec_ul->wrapping_indicator_pos) |
|
return UnknownWrapped; |
|
|
|
val = (*essence_container_ul)[codec_ul->wrapping_indicator_pos]; |
|
switch (codec_ul->wrapping_indicator_type) { |
|
case RawVWrap: |
|
val = val % 4; |
|
break; |
|
case RawAWrap: |
|
if (val == 0x03 || val == 0x04) |
|
val -= 0x02; |
|
break; |
|
case D10D11Wrap: |
|
if (val == 0x02) |
|
val = 0x01; |
|
break; |
|
case J2KWrap: |
|
if (val != 0x02) |
|
val = 0x01; |
|
break; |
|
} |
|
if (val == 0x01) |
|
return FrameWrapped; |
|
if (val == 0x02) |
|
return ClipWrapped; |
|
return UnknownWrapped; |
|
} |
|
|
|
static int mxf_get_sorted_table_segments(MXFContext *mxf, int *nb_sorted_segments, MXFIndexTableSegment ***sorted_segments) |
|
{ |
|
int i, j, nb_segments = 0; |
|
MXFIndexTableSegment **unsorted_segments; |
|
int last_body_sid = -1, last_index_sid = -1, last_index_start = -1; |
|
MXFMetadataSetGroup *mg = &mxf->metadata_set_groups[IndexTableSegment]; |
|
|
|
/* count number of segments, allocate arrays and copy unsorted segments */ |
|
nb_segments = mg->metadata_sets_count; |
|
if (!nb_segments) |
|
return AVERROR_INVALIDDATA; |
|
|
|
if (!(unsorted_segments = av_calloc(nb_segments, sizeof(*unsorted_segments))) || |
|
!(*sorted_segments = av_calloc(nb_segments, sizeof(**sorted_segments)))) { |
|
av_freep(sorted_segments); |
|
av_free(unsorted_segments); |
|
return AVERROR(ENOMEM); |
|
} |
|
|
|
for (i = nb_segments = 0; i < mg->metadata_sets_count; i++) { |
|
MXFIndexTableSegment *s = (MXFIndexTableSegment*)mg->metadata_sets[i]; |
|
if (s->edit_unit_byte_count || s->nb_index_entries) |
|
unsorted_segments[nb_segments++] = s; |
|
else |
|
av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment at %"PRId64" missing EditUnitByteCount and IndexEntryArray\n", |
|
s->index_sid, s->index_start_position); |
|
} |
|
|
|
if (!nb_segments) { |
|
av_freep(sorted_segments); |
|
av_free(unsorted_segments); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
*nb_sorted_segments = 0; |
|
|
|
/* sort segments by {BodySID, IndexSID, IndexStartPosition}, remove duplicates while we're at it */ |
|
for (i = 0; i < nb_segments; i++) { |
|
int best = -1, best_body_sid = -1, best_index_sid = -1, best_index_start = -1; |
|
uint64_t best_index_duration = 0; |
|
|
|
for (j = 0; j < nb_segments; j++) { |
|
MXFIndexTableSegment *s = unsorted_segments[j]; |
|
|
|
/* Require larger BosySID, IndexSID or IndexStartPosition then the previous entry. This removes duplicates. |
|
* We want the smallest values for the keys than what we currently have, unless this is the first such entry this time around. |
|
* If we come across an entry with the same IndexStartPosition but larger IndexDuration, then we'll prefer it over the one we currently have. |
|
*/ |
|
if ((i == 0 || |
|
s->body_sid > last_body_sid || |
|
s->body_sid == last_body_sid && s->index_sid > last_index_sid || |
|
s->body_sid == last_body_sid && s->index_sid == last_index_sid && s->index_start_position > last_index_start) && |
|
(best == -1 || |
|
s->body_sid < best_body_sid || |
|
s->body_sid == best_body_sid && s->index_sid < best_index_sid || |
|
s->body_sid == best_body_sid && s->index_sid == best_index_sid && s->index_start_position < best_index_start || |
|
s->body_sid == best_body_sid && s->index_sid == best_index_sid && s->index_start_position == best_index_start && s->index_duration > best_index_duration)) { |
|
best = j; |
|
best_body_sid = s->body_sid; |
|
best_index_sid = s->index_sid; |
|
best_index_start = s->index_start_position; |
|
best_index_duration = s->index_duration; |
|
} |
|
} |
|
|
|
/* no suitable entry found -> we're done */ |
|
if (best == -1) |
|
break; |
|
|
|
(*sorted_segments)[(*nb_sorted_segments)++] = unsorted_segments[best]; |
|
last_body_sid = best_body_sid; |
|
last_index_sid = best_index_sid; |
|
last_index_start = best_index_start; |
|
} |
|
|
|
av_free(unsorted_segments); |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* Computes the absolute file offset of the given essence container offset |
|
*/ |
|
static int mxf_absolute_bodysid_offset(MXFContext *mxf, int body_sid, int64_t offset, int64_t *offset_out, MXFPartition **partition_out) |
|
{ |
|
MXFPartition *last_p = NULL; |
|
int a, b, m, m0; |
|
|
|
if (offset < 0) |
|
return AVERROR(EINVAL); |
|
|
|
a = -1; |
|
b = mxf->partitions_count; |
|
|
|
while (b - a > 1) { |
|
m0 = m = (a + b) >> 1; |
|
|
|
while (m < b && mxf->partitions[m].body_sid != body_sid) |
|
m++; |
|
|
|
if (m < b && mxf->partitions[m].body_offset <= offset) |
|
a = m; |
|
else |
|
b = m0; |
|
} |
|
|
|
if (a >= 0) |
|
last_p = &mxf->partitions[a]; |
|
|
|
if (last_p && (!last_p->essence_length || last_p->essence_length > (offset - last_p->body_offset))) { |
|
*offset_out = last_p->essence_offset + (offset - last_p->body_offset); |
|
if (partition_out) |
|
*partition_out = last_p; |
|
return 0; |
|
} |
|
|
|
av_log(mxf->fc, AV_LOG_ERROR, |
|
"failed to find absolute offset of %"PRIX64" in BodySID %i - partial file?\n", |
|
offset, body_sid); |
|
|
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
/** |
|
* Returns the end position of the essence container with given BodySID, or zero if unknown |
|
*/ |
|
static int64_t mxf_essence_container_end(MXFContext *mxf, int body_sid) |
|
{ |
|
for (int x = mxf->partitions_count - 1; x >= 0; x--) { |
|
MXFPartition *p = &mxf->partitions[x]; |
|
|
|
if (p->body_sid != body_sid) |
|
continue; |
|
|
|
if (!p->essence_length) |
|
return 0; |
|
|
|
return p->essence_offset + p->essence_length; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* EditUnit -> absolute offset */ |
|
static int mxf_edit_unit_absolute_offset(MXFContext *mxf, MXFIndexTable *index_table, int64_t edit_unit, AVRational edit_rate, int64_t *edit_unit_out, int64_t *offset_out, MXFPartition **partition_out, int nag) |
|
{ |
|
int i; |
|
int64_t offset_temp = 0; |
|
|
|
edit_unit = av_rescale_q(edit_unit, index_table->segments[0]->index_edit_rate, edit_rate); |
|
|
|
for (i = 0; i < index_table->nb_segments; i++) { |
|
MXFIndexTableSegment *s = index_table->segments[i]; |
|
|
|
edit_unit = FFMAX(edit_unit, s->index_start_position); /* clamp if trying to seek before start */ |
|
|
|
if (edit_unit < s->index_start_position + s->index_duration) { |
|
int64_t index = edit_unit - s->index_start_position; |
|
|
|
if (s->edit_unit_byte_count) |
|
offset_temp += s->edit_unit_byte_count * index; |
|
else { |
|
if (s->nb_index_entries == 2 * s->index_duration + 1) |
|
index *= 2; /* Avid index */ |
|
|
|
if (index < 0 || index >= s->nb_index_entries) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "IndexSID %i segment at %"PRId64" IndexEntryArray too small\n", |
|
index_table->index_sid, s->index_start_position); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
offset_temp = s->stream_offset_entries[index]; |
|
} |
|
|
|
if (edit_unit_out) |
|
*edit_unit_out = av_rescale_q(edit_unit, edit_rate, s->index_edit_rate); |
|
|
|
return mxf_absolute_bodysid_offset(mxf, index_table->body_sid, offset_temp, offset_out, partition_out); |
|
} else { |
|
/* EditUnitByteCount == 0 for VBR indexes, which is fine since they use explicit StreamOffsets */ |
|
offset_temp += s->edit_unit_byte_count * s->index_duration; |
|
} |
|
} |
|
|
|
if (nag) |
|
av_log(mxf->fc, AV_LOG_ERROR, "failed to map EditUnit %"PRId64" in IndexSID %i to an offset\n", edit_unit, index_table->index_sid); |
|
|
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
static int mxf_compute_ptses_fake_index(MXFContext *mxf, MXFIndexTable *index_table) |
|
{ |
|
int i, j, x; |
|
int8_t max_temporal_offset = -128; |
|
uint8_t *flags; |
|
|
|
/* first compute how many entries we have */ |
|
for (i = 0; i < index_table->nb_segments; i++) { |
|
MXFIndexTableSegment *s = index_table->segments[i]; |
|
|
|
if (!s->nb_index_entries) { |
|
index_table->nb_ptses = 0; |
|
return 0; /* no TemporalOffsets */ |
|
} |
|
|
|
if (s->index_duration > INT_MAX - index_table->nb_ptses) { |
|
index_table->nb_ptses = 0; |
|
av_log(mxf->fc, AV_LOG_ERROR, "ignoring IndexSID %d, duration is too large\n", s->index_sid); |
|
return 0; |
|
} |
|
|
|
if (s->nb_index_entries != s->index_duration && |
|
s->nb_index_entries != s->index_duration + 1 && /* Avid index */ |
|
s->nb_index_entries != s->index_duration * 2 + 1) { |
|
index_table->nb_ptses = 0; |
|
av_log(mxf->fc, AV_LOG_ERROR, "ignoring IndexSID %d, duration does not match nb_index_entries\n", s->index_sid); |
|
return 0; |
|
} |
|
|
|
index_table->nb_ptses += s->index_duration; |
|
} |
|
|
|
/* paranoid check */ |
|
if (index_table->nb_ptses <= 0) |
|
return 0; |
|
|
|
if (!(index_table->ptses = av_malloc_array(index_table->nb_ptses, sizeof(int64_t))) || |
|
!(index_table->fake_index = av_calloc(index_table->nb_ptses, sizeof(AVIndexEntry))) || |
|
!(index_table->offsets = av_malloc_array(index_table->nb_ptses, sizeof(int8_t))) || |
|
!(flags = av_malloc_array(index_table->nb_ptses, sizeof(uint8_t)))) { |
|
av_freep(&index_table->ptses); |
|
av_freep(&index_table->fake_index); |
|
av_freep(&index_table->offsets); |
|
return AVERROR(ENOMEM); |
|
} |
|
|
|
/* we may have a few bad TemporalOffsets |
|
* make sure the corresponding PTSes don't have the bogus value 0 */ |
|
for (x = 0; x < index_table->nb_ptses; x++) |
|
index_table->ptses[x] = AV_NOPTS_VALUE; |
|
|
|
/** |
|
* We have this: |
|
* |
|
* x TemporalOffset |
|
* 0: 0 |
|
* 1: 1 |
|
* 2: 1 |
|
* 3: -2 |
|
* 4: 1 |
|
* 5: 1 |
|
* 6: -2 |
|
* |
|
* We want to transform it into this: |
|
* |
|
* x DTS PTS |
|
* 0: -1 0 |
|
* 1: 0 3 |
|
* 2: 1 1 |
|
* 3: 2 2 |
|
* 4: 3 6 |
|
* 5: 4 4 |
|
* 6: 5 5 |
|
* |
|
* We do this by bucket sorting x by x+TemporalOffset[x] into mxf->ptses, |
|
* then settings ffstream(mxf)->first_dts = -max(TemporalOffset[x]). |
|
* The latter makes DTS <= PTS. |
|
*/ |
|
for (i = x = 0; i < index_table->nb_segments; i++) { |
|
MXFIndexTableSegment *s = index_table->segments[i]; |
|
int index_delta = 1; |
|
int n = s->nb_index_entries; |
|
|
|
if (s->nb_index_entries == 2 * s->index_duration + 1) |
|
index_delta = 2; /* Avid index */ |
|
if (s->nb_index_entries == index_delta * s->index_duration + 1) |
|
/* ignore the last entry - it's the size of the essence container in Avid */ |
|
n--; |
|
|
|
for (j = 0; j < n; j += index_delta, x++) { |
|
int offset = s->temporal_offset_entries[j] / index_delta; |
|
int index = x + offset; |
|
|
|
if (x >= index_table->nb_ptses) { |
|
av_log(mxf->fc, AV_LOG_ERROR, |
|
"x >= nb_ptses - IndexEntryCount %i < IndexDuration %"PRId64"?\n", |
|
s->nb_index_entries, s->index_duration); |
|
break; |
|
} |
|
|
|
flags[x] = !(s->flag_entries[j] & 0x30) ? AVINDEX_KEYFRAME : 0; |
|
|
|
if (index < 0 || index >= index_table->nb_ptses) { |
|
av_log(mxf->fc, AV_LOG_ERROR, |
|
"index entry %i + TemporalOffset %i = %i, which is out of bounds\n", |
|
x, offset, index); |
|
continue; |
|
} |
|
|
|
index_table->offsets[x] = offset; |
|
index_table->ptses[index] = x; |
|
max_temporal_offset = FFMAX(max_temporal_offset, offset); |
|
} |
|
} |
|
|
|
/* calculate the fake index table in display order */ |
|
for (x = 0; x < index_table->nb_ptses; x++) { |
|
index_table->fake_index[x].timestamp = x; |
|
if (index_table->ptses[x] != AV_NOPTS_VALUE) |
|
index_table->fake_index[index_table->ptses[x]].flags = flags[x]; |
|
} |
|
av_freep(&flags); |
|
|
|
index_table->first_dts = -max_temporal_offset; |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* Sorts and collects index table segments into index tables. |
|
* Also computes PTSes if possible. |
|
*/ |
|
static int mxf_compute_index_tables(MXFContext *mxf) |
|
{ |
|
int i, j, k, ret, nb_sorted_segments; |
|
MXFIndexTableSegment **sorted_segments = NULL; |
|
|
|
if ((ret = mxf_get_sorted_table_segments(mxf, &nb_sorted_segments, &sorted_segments)) || |
|
nb_sorted_segments <= 0) { |
|
av_log(mxf->fc, AV_LOG_WARNING, "broken or empty index\n"); |
|
return 0; |
|
} |
|
|
|
/* sanity check and count unique BodySIDs/IndexSIDs */ |
|
for (i = 0; i < nb_sorted_segments; i++) { |
|
if (i == 0 || sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid) |
|
mxf->nb_index_tables++; |
|
else if (sorted_segments[i-1]->body_sid != sorted_segments[i]->body_sid) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "found inconsistent BodySID\n"); |
|
ret = AVERROR_INVALIDDATA; |
|
goto finish_decoding_index; |
|
} |
|
} |
|
|
|
mxf->index_tables = av_calloc(mxf->nb_index_tables, |
|
sizeof(*mxf->index_tables)); |
|
if (!mxf->index_tables) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate index tables\n"); |
|
ret = AVERROR(ENOMEM); |
|
goto finish_decoding_index; |
|
} |
|
|
|
/* distribute sorted segments to index tables */ |
|
for (i = j = 0; i < nb_sorted_segments; i++) { |
|
if (i != 0 && sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid) { |
|
/* next IndexSID */ |
|
j++; |
|
} |
|
|
|
mxf->index_tables[j].nb_segments++; |
|
} |
|
|
|
for (i = j = 0; j < mxf->nb_index_tables; i += mxf->index_tables[j++].nb_segments) { |
|
MXFIndexTable *t = &mxf->index_tables[j]; |
|
MXFTrack *mxf_track = NULL; |
|
|
|
t->segments = av_calloc(t->nb_segments, sizeof(*t->segments)); |
|
if (!t->segments) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate IndexTableSegment" |
|
" pointer array\n"); |
|
ret = AVERROR(ENOMEM); |
|
goto finish_decoding_index; |
|
} |
|
|
|
if (sorted_segments[i]->index_start_position) |
|
av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i starts at EditUnit %"PRId64" - seeking may not work as expected\n", |
|
sorted_segments[i]->index_sid, sorted_segments[i]->index_start_position); |
|
|
|
memcpy(t->segments, &sorted_segments[i], t->nb_segments * sizeof(MXFIndexTableSegment*)); |
|
t->index_sid = sorted_segments[i]->index_sid; |
|
t->body_sid = sorted_segments[i]->body_sid; |
|
|
|
if ((ret = mxf_compute_ptses_fake_index(mxf, t)) < 0) |
|
goto finish_decoding_index; |
|
|
|
for (k = 0; k < mxf->fc->nb_streams; k++) { |
|
MXFTrack *track = mxf->fc->streams[k]->priv_data; |
|
if (track && track->index_sid == t->index_sid) { |
|
mxf_track = track; |
|
break; |
|
} |
|
} |
|
|
|
/* fix zero IndexDurations */ |
|
for (k = 0; k < t->nb_segments; k++) { |
|
if (!t->segments[k]->index_edit_rate.num || !t->segments[k]->index_edit_rate.den) { |
|
av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment %i has invalid IndexEditRate\n", |
|
t->index_sid, k); |
|
if (mxf_track) |
|
t->segments[k]->index_edit_rate = mxf_track->edit_rate; |
|
} |
|
|
|
if (t->segments[k]->index_duration) |
|
continue; |
|
|
|
if (t->nb_segments > 1) |
|
av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment %i has zero IndexDuration and there's more than one segment\n", |
|
t->index_sid, k); |
|
|
|
if (!mxf_track) { |
|
av_log(mxf->fc, AV_LOG_WARNING, "no streams?\n"); |
|
break; |
|
} |
|
|
|
/* assume the first stream's duration is reasonable |
|
* leave index_duration = 0 on further segments in case we have any (unlikely) |
|
*/ |
|
t->segments[k]->index_duration = mxf_track->original_duration; |
|
break; |
|
} |
|
} |
|
|
|
ret = 0; |
|
finish_decoding_index: |
|
av_free(sorted_segments); |
|
return ret; |
|
} |
|
|
|
static int mxf_is_st_422(const UID *essence_container_ul) { |
|
static const uint8_t st_422_essence_container_ul[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c }; |
|
|
|
return essence_container_ul && mxf_match_uid(*essence_container_ul, st_422_essence_container_ul, |
|
sizeof(st_422_essence_container_ul)); |
|
} |
|
|
|
static int mxf_is_intra_only(MXFDescriptor *descriptor) |
|
{ |
|
return mxf_get_codec_ul(mxf_intra_only_essence_container_uls, |
|
&descriptor->essence_container_ul)->id != AV_CODEC_ID_NONE || |
|
mxf_get_codec_ul(mxf_intra_only_picture_essence_coding_uls, |
|
&descriptor->essence_codec_ul)->id != AV_CODEC_ID_NONE; |
|
} |
|
|
|
static void mxf_umid_to_str(const UID ul, const UID uid, |
|
char str[2 + sizeof(UID) * 4 + 1]) |
|
{ |
|
snprintf(str, 2 + sizeof(UID) * 4 + 1, "0x"); |
|
ff_data_to_hex(str + 2, ul, sizeof(UID), 0); |
|
ff_data_to_hex(str + 2 + 2 * sizeof(UID), uid, sizeof(UID), 0); |
|
} |
|
|
|
static int mxf_version_to_str(uint16_t major, uint16_t minor, uint16_t tertiary, |
|
uint16_t patch, uint16_t release, char **str) |
|
{ |
|
*str = av_asprintf("%d.%d.%d.%d.%d", major, minor, tertiary, patch, release); |
|
if (!*str) |
|
return AVERROR(ENOMEM); |
|
return 0; |
|
} |
|
|
|
static int mxf_add_umid_metadata(AVDictionary **pm, const char *key, MXFPackage* package) |
|
{ |
|
char str[2 + 4 * sizeof(UID) + 1]; |
|
if (!package) |
|
return 0; |
|
mxf_umid_to_str(package->package_ul, package->package_uid, str); |
|
av_dict_set(pm, key, str, 0); |
|
return 0; |
|
} |
|
|
|
static int mxf_add_timecode_metadata(AVDictionary **pm, const char *key, AVTimecode *tc) |
|
{ |
|
char buf[AV_TIMECODE_STR_SIZE]; |
|
av_dict_set(pm, key, av_timecode_make_string(tc, buf, 0), 0); |
|
|
|
return 0; |
|
} |
|
|
|
static MXFTimecodeComponent* mxf_resolve_timecode_component(MXFContext *mxf, UID *strong_ref) |
|
{ |
|
MXFTimecodeComponent *timecode; |
|
MXFPulldownComponent *pulldown; |
|
|
|
timecode = mxf_resolve_strong_ref(mxf, strong_ref, TimecodeComponent); |
|
if (timecode) |
|
return timecode; |
|
|
|
pulldown = mxf_resolve_strong_ref(mxf, strong_ref, PulldownComponent); |
|
if (pulldown) |
|
return mxf_resolve_strong_ref(mxf, &pulldown->input_segment_ref, TimecodeComponent); |
|
|
|
return NULL; |
|
} |
|
|
|
static MXFPackage* mxf_resolve_source_package(MXFContext *mxf, UID package_ul, UID package_uid) |
|
{ |
|
MXFPackage *package = NULL; |
|
int i; |
|
|
|
for (i = 0; i < mxf->packages_count; i++) { |
|
package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], SourcePackage); |
|
if (!package) |
|
continue; |
|
|
|
if (!memcmp(package->package_ul, package_ul, 16) && !memcmp(package->package_uid, package_uid, 16)) |
|
return package; |
|
} |
|
return NULL; |
|
} |
|
|
|
static MXFDescriptor* mxf_resolve_descriptor(MXFContext *mxf, UID *strong_ref, int track_id) |
|
{ |
|
MXFDescriptor *descriptor = mxf_resolve_strong_ref(mxf, strong_ref, Descriptor); |
|
if (descriptor) |
|
return descriptor; |
|
|
|
descriptor = mxf_resolve_strong_ref(mxf, strong_ref, MultipleDescriptor); |
|
if (descriptor) { |
|
for (int i = 0; i < descriptor->file_descriptors_count; i++) { |
|
MXFDescriptor *file_descriptor = mxf_resolve_strong_ref(mxf, &descriptor->file_descriptors_refs[i], Descriptor); |
|
|
|
if (!file_descriptor) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve file descriptor strong ref\n"); |
|
continue; |
|
} |
|
if (file_descriptor->linked_track_id == track_id) { |
|
return file_descriptor; |
|
} |
|
} |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
static MXFStructuralComponent* mxf_resolve_sourceclip(MXFContext *mxf, UID *strong_ref) |
|
{ |
|
MXFStructuralComponent *component = NULL; |
|
MXFPackage *package = NULL; |
|
MXFDescriptor *descriptor = NULL; |
|
MXFEssenceGroup *essence_group; |
|
int i; |
|
|
|
component = mxf_resolve_strong_ref(mxf, strong_ref, SourceClip); |
|
if (component) |
|
return component; |
|
|
|
essence_group = mxf_resolve_strong_ref(mxf, strong_ref, EssenceGroup); |
|
if (!essence_group) |
|
return NULL; |
|
|
|
/* essence groups contains multiple representations of the same media, |
|
this return the first components with a valid Descriptor typically index 0 */ |
|
for (i =0; i < essence_group->structural_components_count; i++){ |
|
component = mxf_resolve_strong_ref(mxf, &essence_group->structural_components_refs[i], SourceClip); |
|
if (!component) |
|
continue; |
|
|
|
if (!(package = mxf_resolve_source_package(mxf, component->source_package_ul, component->source_package_uid))) |
|
continue; |
|
|
|
descriptor = mxf_resolve_strong_ref(mxf, &package->descriptor_ref, Descriptor); |
|
if (descriptor) |
|
return component; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
static int mxf_parse_package_comments(MXFContext *mxf, AVDictionary **pm, MXFPackage *package) |
|
{ |
|
MXFTaggedValue *tag; |
|
int i; |
|
char *key = NULL; |
|
|
|
for (i = 0; i < package->comment_count; i++) { |
|
tag = mxf_resolve_strong_ref(mxf, &package->comment_refs[i], TaggedValue); |
|
if (!tag || !tag->name || !tag->value) |
|
continue; |
|
|
|
key = av_asprintf("comment_%s", tag->name); |
|
if (!key) |
|
return AVERROR(ENOMEM); |
|
|
|
av_dict_set(pm, key, tag->value, AV_DICT_DONT_STRDUP_KEY); |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_parse_physical_source_package(MXFContext *mxf, MXFTrack *source_track, AVStream *st) |
|
{ |
|
MXFPackage *physical_package = NULL; |
|
MXFTrack *physical_track = NULL; |
|
MXFStructuralComponent *sourceclip = NULL; |
|
MXFTimecodeComponent *mxf_tc = NULL; |
|
int i, j, k; |
|
AVTimecode tc; |
|
int flags; |
|
int64_t start_position; |
|
|
|
for (i = 0; i < source_track->sequence->structural_components_count; i++) { |
|
sourceclip = mxf_resolve_strong_ref(mxf, &source_track->sequence->structural_components_refs[i], SourceClip); |
|
if (!sourceclip) |
|
continue; |
|
|
|
if (!(physical_package = mxf_resolve_source_package(mxf, sourceclip->source_package_ul, sourceclip->source_package_uid))) |
|
break; |
|
|
|
mxf_add_umid_metadata(&st->metadata, "reel_umid", physical_package); |
|
|
|
/* the name of physical source package is name of the reel or tape */ |
|
if (physical_package->name && physical_package->name[0]) |
|
av_dict_set(&st->metadata, "reel_name", physical_package->name, 0); |
|
|
|
/* the source timecode is calculated by adding the start_position of the sourceclip from the file source package track |
|
* to the start_frame of the timecode component located on one of the tracks of the physical source package. |
|
*/ |
|
for (j = 0; j < physical_package->tracks_count; j++) { |
|
if (!(physical_track = mxf_resolve_strong_ref(mxf, &physical_package->tracks_refs[j], Track))) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n"); |
|
continue; |
|
} |
|
|
|
if (!(physical_track->sequence = mxf_resolve_strong_ref(mxf, &physical_track->sequence_ref, Sequence))) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n"); |
|
continue; |
|
} |
|
|
|
if (physical_track->edit_rate.num <= 0 || |
|
physical_track->edit_rate.den <= 0) { |
|
av_log(mxf->fc, AV_LOG_WARNING, |
|
"Invalid edit rate (%d/%d) found on structural" |
|
" component #%d, defaulting to 25/1\n", |
|
physical_track->edit_rate.num, |
|
physical_track->edit_rate.den, i); |
|
physical_track->edit_rate = (AVRational){25, 1}; |
|
} |
|
|
|
for (k = 0; k < physical_track->sequence->structural_components_count; k++) { |
|
if (!(mxf_tc = mxf_resolve_timecode_component(mxf, &physical_track->sequence->structural_components_refs[k]))) |
|
continue; |
|
|
|
flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0; |
|
/* scale sourceclip start_position to match physical track edit rate */ |
|
start_position = av_rescale_q(sourceclip->start_position, |
|
physical_track->edit_rate, |
|
source_track->edit_rate); |
|
|
|
if (av_timecode_init(&tc, mxf_tc->rate, flags, start_position + mxf_tc->start_frame, mxf->fc) == 0) { |
|
mxf_add_timecode_metadata(&st->metadata, "timecode", &tc); |
|
return 0; |
|
} |
|
} |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mxf_add_metadata_stream(MXFContext *mxf, MXFTrack *track) |
|
{ |
|
MXFStructuralComponent *component = NULL; |
|
const MXFCodecUL *codec_ul = NULL; |
|
MXFPackage tmp_package; |
|
AVStream *st; |
|
int j; |
|
|
|
for (j = 0; j < track->sequence->structural_components_count; j++) { |
|
component = mxf_resolve_sourceclip(mxf, &track->sequence->structural_components_refs[j]); |
|
if (!component) |
|
continue; |
|
break; |
|
} |
|
if (!component) |
|
return 0; |
|
|
|
st = avformat_new_stream(mxf->fc, NULL); |
|
if (!st) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not allocate metadata stream\n"); |
|
return AVERROR(ENOMEM); |
|
} |
|
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_DATA; |
|
st->codecpar->codec_id = AV_CODEC_ID_NONE; |
|
st->id = track->track_id; |
|
|
|
memcpy(&tmp_package.package_ul, component->source_package_ul, 16); |
|
memcpy(&tmp_package.package_uid, component->source_package_uid, 16); |
|
mxf_add_umid_metadata(&st->metadata, "file_package_umid", &tmp_package); |
|
if (track->name && track->name[0]) |
|
av_dict_set(&st->metadata, "track_name", track->name, 0); |
|
|
|
codec_ul = mxf_get_codec_ul(ff_mxf_data_definition_uls, &track->sequence->data_definition_ul); |
|
av_dict_set(&st->metadata, "data_type", av_get_media_type_string(codec_ul->id), 0); |
|
return 0; |
|
} |
|
|
|
static enum AVColorRange mxf_get_color_range(MXFContext *mxf, MXFDescriptor *descriptor) |
|
{ |
|
if (descriptor->black_ref_level || descriptor->white_ref_level || descriptor->color_range) { |
|
/* CDCI range metadata */ |
|
if (!descriptor->component_depth) |
|
return AVCOL_RANGE_UNSPECIFIED; |
|
if (descriptor->black_ref_level == 0 && descriptor->component_depth < 31 && |
|
descriptor->white_ref_level == ((1<<descriptor->component_depth) - 1) && |
|
(descriptor->color_range == (1<<descriptor->component_depth) || |
|
descriptor->color_range == ((1<<descriptor->component_depth) - 1))) |
|
return AVCOL_RANGE_JPEG; |
|
if (descriptor->component_depth >= 8 && descriptor->component_depth < 31 && |
|
descriptor->black_ref_level == (1 <<(descriptor->component_depth - 4)) && |
|
descriptor->white_ref_level == (235<<(descriptor->component_depth - 8)) && |
|
descriptor->color_range == ((14<<(descriptor->component_depth - 4)) + 1)) |
|
return AVCOL_RANGE_MPEG; |
|
avpriv_request_sample(mxf->fc, "Unrecognized CDCI color range (color diff range %d, b %d, w %d, depth %d)", |
|
descriptor->color_range, descriptor->black_ref_level, |
|
descriptor->white_ref_level, descriptor->component_depth); |
|
} |
|
|
|
return AVCOL_RANGE_UNSPECIFIED; |
|
} |
|
|
|
static int is_pcm(enum AVCodecID codec_id) |
|
{ |
|
/* we only care about "normal" PCM codecs until we get samples */ |
|
return codec_id >= AV_CODEC_ID_PCM_S16LE && codec_id < AV_CODEC_ID_PCM_S24DAUD; |
|
} |
|
|
|
static int set_language(AVFormatContext *s, const char *rfc5646, AVDictionary **met) |
|
{ |
|
// language abbr should contain at least 2 chars |
|
if (rfc5646 && strlen(rfc5646) > 1) { |
|
char primary_tag[4] = |
|
{rfc5646[0], rfc5646[1], rfc5646[2] != '-' ? rfc5646[2] : '\0', '\0'}; |
|
|
|
const char *iso6392 = ff_convert_lang_to(primary_tag, |
|
AV_LANG_ISO639_2_BIBL); |
|
if (iso6392) |
|
return(av_dict_set(met, "language", iso6392, 0)); |
|
} |
|
return 0; |
|
} |
|
|
|
static MXFMCASubDescriptor *find_mca_link_id(MXFContext *mxf, enum MXFMetadataSetType type, UID *mca_link_id) |
|
{ |
|
MXFMetadataSetGroup *mg = &mxf->metadata_set_groups[type]; |
|
for (int k = 0; k < mg->metadata_sets_count; k++) { |
|
MXFMCASubDescriptor *group = (MXFMCASubDescriptor*)mg->metadata_sets[k]; |
|
if (!memcmp(&group->mca_link_id, mca_link_id, 16)) |
|
return group; |
|
} |
|
return NULL; |
|
} |
|
|
|
static void parse_ffv1_sub_descriptor(MXFContext *mxf, MXFTrack *source_track, MXFDescriptor *descriptor, AVStream *st) |
|
{ |
|
for (int i = 0; i < descriptor->sub_descriptors_count; i++) { |
|
MXFFFV1SubDescriptor *ffv1_sub_descriptor = mxf_resolve_strong_ref(mxf, &descriptor->sub_descriptors_refs[i], FFV1SubDescriptor); |
|
if (ffv1_sub_descriptor == NULL) |
|
continue; |
|
|
|
descriptor->extradata = ffv1_sub_descriptor->extradata; |
|
descriptor->extradata_size = ffv1_sub_descriptor->extradata_size; |
|
ffv1_sub_descriptor->extradata = NULL; |
|
ffv1_sub_descriptor->extradata_size = 0; |
|
break; |
|
} |
|
} |
|
|
|
static int parse_mca_labels(MXFContext *mxf, MXFTrack *source_track, MXFDescriptor *descriptor, AVStream *st) |
|
{ |
|
uint64_t routing[FF_SANE_NB_CHANNELS] = {0}; |
|
char *language = NULL; |
|
int ambigous_language = 0; |
|
enum AVAudioServiceType service_type = AV_AUDIO_SERVICE_TYPE_NB; |
|
int ambigous_service_type = 0; |
|
int has_channel_label = 0; |
|
|
|
for (int i = 0; i < descriptor->sub_descriptors_count; i++) { |
|
char *channel_language; |
|
|
|
MXFMCASubDescriptor *label = mxf_resolve_strong_ref(mxf, &descriptor->sub_descriptors_refs[i], AudioChannelLabelSubDescriptor); |
|
if (label == NULL) |
|
continue; |
|
|
|
has_channel_label = 1; |
|
for (const MXFChannelOrderingUL* channel_ordering = mxf_channel_ordering; channel_ordering->uid[0]; channel_ordering++) { |
|
if (IS_KLV_KEY(channel_ordering->uid, label->mca_label_dictionary_id)) { |
|
int target_channel = label->mca_channel_id; |
|
if (target_channel == 0 && descriptor->channels == 1) |
|
target_channel = 1; |
|
if (target_channel <= 0 || target_channel > descriptor->channels) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "AudioChannelLabelSubDescriptor has invalid MCA channel ID %d\n", target_channel); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
routing[target_channel - 1] = channel_ordering->layout_mask; |
|
if (service_type == AV_AUDIO_SERVICE_TYPE_NB) |
|
service_type = channel_ordering->service_type; |
|
else if (service_type != channel_ordering->service_type) |
|
ambigous_service_type = 1; |
|
break; |
|
} |
|
} |
|
|
|
channel_language = label->language; |
|
if (!channel_language) { |
|
MXFMCASubDescriptor *group = find_mca_link_id(mxf, SoundfieldGroupLabelSubDescriptor, &label->soundfield_group_link_id); |
|
if (group) { |
|
channel_language = group->language; |
|
if (!channel_language && group->group_of_soundfield_groups_link_id_count) { |
|
MXFMCASubDescriptor *supergroup = find_mca_link_id(mxf, GroupOfSoundfieldGroupsLabelSubDescriptor, |
|
group->group_of_soundfield_groups_link_id_refs); |
|
if (supergroup) |
|
channel_language = supergroup->language; |
|
} |
|
} |
|
} |
|
if (channel_language) { |
|
if (language && strcmp(language, channel_language)) |
|
ambigous_language = 1; |
|
else |
|
language = channel_language; |
|
} |
|
} |
|
|
|
if (language && !ambigous_language) { |
|
int ret = set_language(mxf->fc, language, &st->metadata); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
if (service_type != AV_AUDIO_SERVICE_TYPE_NB && service_type != AV_AUDIO_SERVICE_TYPE_MAIN && !ambigous_service_type) { |
|
enum AVAudioServiceType *ast; |
|
AVPacketSideData *side_data = av_packet_side_data_new(&st->codecpar->coded_side_data, |
|
&st->codecpar->nb_coded_side_data, |
|
AV_PKT_DATA_AUDIO_SERVICE_TYPE, |
|
sizeof(*ast), 0); |
|
if (!side_data) |
|
return AVERROR(ENOMEM); |
|
ast = (enum AVAudioServiceType*)side_data->data; |
|
*ast = service_type; |
|
} |
|
|
|
if (has_channel_label) { |
|
uint64_t channel_layout = 0; |
|
int ret; |
|
|
|
for (int i = 0; i < descriptor->channels; i++) { |
|
if (!routing[i]) { |
|
av_log(mxf->fc, AV_LOG_WARNING, "Designation of audio channel %d in stream #%d is unknown or unsupported, " |
|
"falling back to unknown channel layout\n", st->index, i); |
|
return 0; |
|
} |
|
if (channel_layout & routing[i]) { |
|
char buf[32]; |
|
av_channel_name(buf, sizeof(buf), routing[i]); |
|
av_log(mxf->fc, AV_LOG_WARNING, "%s audio channel is used multiple times in stream #%d, " |
|
"falling back to unknown channel layout\n", |
|
buf, st->index); |
|
return 0; |
|
} |
|
if (routing[i] < channel_layout) { |
|
av_log(mxf->fc, AV_LOG_WARNING, "stream #%d is not in in native channel order, " |
|
"falling back to unknown channel layout\n", st->index); |
|
return 0; |
|
} |
|
channel_layout |= routing[i]; |
|
} |
|
|
|
av_assert0(descriptor->channels == av_popcount64(channel_layout)); |
|
|
|
ret = av_channel_layout_from_mask(&st->codecpar->ch_layout, channel_layout); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mxf_parse_structural_metadata(MXFContext *mxf) |
|
{ |
|
MXFPackage *material_package = NULL; |
|
int i, j, k, ret; |
|
|
|
/* TODO: handle multiple material packages (OP3x) */ |
|
for (i = 0; i < mxf->packages_count; i++) { |
|
material_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], MaterialPackage); |
|
if (material_package) break; |
|
} |
|
if (!material_package) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "no material package found\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
mxf_add_umid_metadata(&mxf->fc->metadata, "material_package_umid", material_package); |
|
if (material_package->name && material_package->name[0]) |
|
av_dict_set(&mxf->fc->metadata, "material_package_name", material_package->name, 0); |
|
mxf_parse_package_comments(mxf, &mxf->fc->metadata, material_package); |
|
|
|
for (i = 0; i < material_package->tracks_count; i++) { |
|
MXFPackage *source_package = NULL; |
|
MXFTrack *material_track = NULL; |
|
MXFTrack *source_track = NULL; |
|
MXFTrack *temp_track = NULL; |
|
MXFDescriptor *descriptor = NULL; |
|
MXFStructuralComponent *component = NULL; |
|
MXFTimecodeComponent *mxf_tc = NULL; |
|
UID *essence_container_ul = NULL; |
|
const MXFCodecUL *codec_ul = NULL; |
|
const MXFCodecUL *container_ul = NULL; |
|
const MXFCodecUL *pix_fmt_ul = NULL; |
|
AVStream *st; |
|
FFStream *sti; |
|
AVTimecode tc; |
|
int flags; |
|
|
|
if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i], Track))) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track strong ref\n"); |
|
continue; |
|
} |
|
|
|
if ((component = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, TimecodeComponent))) { |
|
mxf_tc = (MXFTimecodeComponent*)component; |
|
flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0; |
|
if (av_timecode_init(&tc, mxf_tc->rate, flags, mxf_tc->start_frame, mxf->fc) == 0) { |
|
mxf_add_timecode_metadata(&mxf->fc->metadata, "timecode", &tc); |
|
} |
|
} |
|
|
|
if (!(material_track->sequence = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, Sequence))) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track sequence strong ref\n"); |
|
continue; |
|
} |
|
|
|
for (j = 0; j < material_track->sequence->structural_components_count; j++) { |
|
component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j], TimecodeComponent); |
|
if (!component) |
|
continue; |
|
|
|
mxf_tc = (MXFTimecodeComponent*)component; |
|
flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0; |
|
if (av_timecode_init(&tc, mxf_tc->rate, flags, mxf_tc->start_frame, mxf->fc) == 0) { |
|
mxf_add_timecode_metadata(&mxf->fc->metadata, "timecode", &tc); |
|
break; |
|
} |
|
} |
|
|
|
/* TODO: handle multiple source clips, only finds first valid source clip */ |
|
if(material_track->sequence->structural_components_count > 1) |
|
av_log(mxf->fc, AV_LOG_WARNING, "material track %d: has %d components\n", |
|
material_track->track_id, material_track->sequence->structural_components_count); |
|
|
|
for (j = 0; j < material_track->sequence->structural_components_count; j++) { |
|
component = mxf_resolve_sourceclip(mxf, &material_track->sequence->structural_components_refs[j]); |
|
if (!component) |
|
continue; |
|
|
|
source_package = mxf_resolve_source_package(mxf, component->source_package_ul, component->source_package_uid); |
|
if (!source_package) { |
|
av_log(mxf->fc, AV_LOG_TRACE, "material track %d: no corresponding source package found\n", material_track->track_id); |
|
continue; |
|
} |
|
for (k = 0; k < source_package->tracks_count; k++) { |
|
if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k], Track))) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n"); |
|
ret = AVERROR_INVALIDDATA; |
|
goto fail_and_free; |
|
} |
|
if (temp_track->track_id == component->source_track_id) { |
|
source_track = temp_track; |
|
break; |
|
} |
|
} |
|
if (!source_track) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source track found\n", material_track->track_id); |
|
break; |
|
} |
|
|
|
for (k = 0; k < mxf->essence_container_data_count; k++) { |
|
MXFEssenceContainerData *essence_data; |
|
|
|
if (!(essence_data = mxf_resolve_strong_ref(mxf, &mxf->essence_container_data_refs[k], EssenceContainerData))) { |
|
av_log(mxf->fc, AV_LOG_TRACE, "could not resolve essence container data strong ref\n"); |
|
continue; |
|
} |
|
if (!memcmp(component->source_package_ul, essence_data->package_ul, sizeof(UID)) && !memcmp(component->source_package_uid, essence_data->package_uid, sizeof(UID))) { |
|
source_track->body_sid = essence_data->body_sid; |
|
source_track->index_sid = essence_data->index_sid; |
|
break; |
|
} |
|
} |
|
|
|
if(source_track && component) |
|
break; |
|
} |
|
if (!source_track || !component || !source_package) { |
|
if((ret = mxf_add_metadata_stream(mxf, material_track))) |
|
goto fail_and_free; |
|
continue; |
|
} |
|
|
|
if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref, Sequence))) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n"); |
|
ret = AVERROR_INVALIDDATA; |
|
goto fail_and_free; |
|
} |
|
|
|
/* 0001GL00.MXF.A1.mxf_opatom.mxf has the same SourcePackageID as 0001GL.MXF.V1.mxf_opatom.mxf |
|
* This would result in both files appearing to have two streams. Work around this by sanity checking DataDefinition */ |
|
if (memcmp(material_track->sequence->data_definition_ul, source_track->sequence->data_definition_ul, 16)) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "material track %d: DataDefinition mismatch\n", material_track->track_id); |
|
continue; |
|
} |
|
|
|
st = avformat_new_stream(mxf->fc, NULL); |
|
if (!st) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not allocate stream\n"); |
|
ret = AVERROR(ENOMEM); |
|
goto fail_and_free; |
|
} |
|
sti = ffstream(st); |
|
st->id = material_track->track_id; |
|
st->priv_data = source_track; |
|
|
|
descriptor = mxf_resolve_descriptor(mxf, &source_package->descriptor_ref, source_track->track_id); |
|
|
|
/* A SourceClip from a EssenceGroup may only be a single frame of essence data. The clips duration is then how many |
|
* frames its suppose to repeat for. Descriptor->duration, if present, contains the real duration of the essence data */ |
|
if (descriptor && descriptor->duration != AV_NOPTS_VALUE) |
|
source_track->original_duration = st->duration = FFMIN(descriptor->duration, component->duration); |
|
else |
|
source_track->original_duration = st->duration = component->duration; |
|
|
|
if (st->duration == -1) |
|
st->duration = AV_NOPTS_VALUE; |
|
st->start_time = component->start_position; |
|
if (material_track->edit_rate.num <= 0 || |
|
material_track->edit_rate.den <= 0) { |
|
av_log(mxf->fc, AV_LOG_WARNING, |
|
"Invalid edit rate (%d/%d) found on stream #%d, " |
|
"defaulting to 25/1\n", |
|
material_track->edit_rate.num, |
|
material_track->edit_rate.den, st->index); |
|
material_track->edit_rate = (AVRational){25, 1}; |
|
} |
|
avpriv_set_pts_info(st, 64, material_track->edit_rate.den, material_track->edit_rate.num); |
|
|
|
/* ensure SourceTrack EditRate == MaterialTrack EditRate since only |
|
* the former is accessible via st->priv_data */ |
|
source_track->edit_rate = material_track->edit_rate; |
|
|
|
PRINT_KEY(mxf->fc, "data definition ul", source_track->sequence->data_definition_ul); |
|
codec_ul = mxf_get_codec_ul(ff_mxf_data_definition_uls, &source_track->sequence->data_definition_ul); |
|
st->codecpar->codec_type = codec_ul->id; |
|
|
|
if (!descriptor) { |
|
av_log(mxf->fc, AV_LOG_INFO, "source track %d: stream %d, no descriptor found\n", source_track->track_id, st->index); |
|
continue; |
|
} |
|
PRINT_KEY(mxf->fc, "essence codec ul", descriptor->essence_codec_ul); |
|
PRINT_KEY(mxf->fc, "essence container ul", descriptor->essence_container_ul); |
|
essence_container_ul = &descriptor->essence_container_ul; |
|
source_track->wrapping = (mxf->op == OPAtom) ? ClipWrapped : mxf_get_wrapping_kind(essence_container_ul); |
|
if (source_track->wrapping == UnknownWrapped) |
|
av_log(mxf->fc, AV_LOG_INFO, "wrapping of stream %d is unknown\n", st->index); |
|
/* HACK: replacing the original key with mxf_encrypted_essence_container |
|
* is not allowed according to s429-6, try to find correct information anyway */ |
|
if (IS_KLV_KEY(essence_container_ul, mxf_encrypted_essence_container)) { |
|
MXFMetadataSetGroup *mg = &mxf->metadata_set_groups[CryptoContext]; |
|
av_log(mxf->fc, AV_LOG_INFO, "broken encrypted mxf file\n"); |
|
if (mg->metadata_sets_count) { |
|
MXFMetadataSet *metadata = mg->metadata_sets[0]; |
|
essence_container_ul = &((MXFCryptoContext *)metadata)->source_container_ul; |
|
} |
|
} |
|
|
|
/* TODO: drop PictureEssenceCoding and SoundEssenceCompression, only check EssenceContainer */ |
|
codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->essence_codec_ul); |
|
st->codecpar->codec_id = (enum AVCodecID)codec_ul->id; |
|
if (st->codecpar->codec_id == AV_CODEC_ID_NONE) { |
|
codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->codec_ul); |
|
st->codecpar->codec_id = (enum AVCodecID)codec_ul->id; |
|
} |
|
|
|
av_log(mxf->fc, AV_LOG_VERBOSE, "%s: Universal Label: ", |
|
avcodec_get_name(st->codecpar->codec_id)); |
|
for (k = 0; k < 16; k++) { |
|
av_log(mxf->fc, AV_LOG_VERBOSE, "%.2x", |
|
descriptor->essence_codec_ul[k]); |
|
if (!(k+1 & 19) || k == 5) |
|
av_log(mxf->fc, AV_LOG_VERBOSE, "."); |
|
} |
|
av_log(mxf->fc, AV_LOG_VERBOSE, "\n"); |
|
|
|
mxf_add_umid_metadata(&st->metadata, "file_package_umid", source_package); |
|
if (source_package->name && source_package->name[0]) |
|
av_dict_set(&st->metadata, "file_package_name", source_package->name, 0); |
|
if (material_track->name && material_track->name[0]) |
|
av_dict_set(&st->metadata, "track_name", material_track->name, 0); |
|
|
|
mxf_parse_physical_source_package(mxf, source_track, st); |
|
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { |
|
source_track->intra_only = mxf_is_intra_only(descriptor); |
|
container_ul = mxf_get_codec_ul(mxf_picture_essence_container_uls, essence_container_ul); |
|
if (st->codecpar->codec_id == AV_CODEC_ID_NONE) |
|
st->codecpar->codec_id = container_ul->id; |
|
st->codecpar->width = descriptor->width; |
|
st->codecpar->height = descriptor->height; /* Field height, not frame height */ |
|
switch (descriptor->frame_layout) { |
|
case FullFrame: |
|
st->codecpar->field_order = AV_FIELD_PROGRESSIVE; |
|
break; |
|
case OneField: |
|
/* Every other line is stored and needs to be duplicated. */ |
|
av_log(mxf->fc, AV_LOG_INFO, "OneField frame layout isn't currently supported\n"); |
|
break; /* The correct thing to do here is fall through, but by breaking we might be |
|
able to decode some streams at half the vertical resolution, rather than not al all. |
|
It's also for compatibility with the old behavior. */ |
|
case MixedFields: |
|
break; |
|
case SegmentedFrame: |
|
st->codecpar->field_order = AV_FIELD_PROGRESSIVE; |
|
case SeparateFields: |
|
av_log(mxf->fc, AV_LOG_DEBUG, "video_line_map: (%d, %d), field_dominance: %d\n", |
|
descriptor->video_line_map[0], descriptor->video_line_map[1], |
|
descriptor->field_dominance); |
|
if ((descriptor->video_line_map[0] > 0) && (descriptor->video_line_map[1] > 0)) { |
|
/* Detect coded field order from VideoLineMap: |
|
* (even, even) => bottom field coded first |
|
* (even, odd) => top field coded first |
|
* (odd, even) => top field coded first |
|
* (odd, odd) => bottom field coded first |
|
*/ |
|
if ((descriptor->video_line_map[0] + descriptor->video_line_map[1]) % 2) { |
|
switch (descriptor->field_dominance) { |
|
case MXF_FIELD_DOMINANCE_DEFAULT: |
|
case MXF_FIELD_DOMINANCE_FF: |
|
st->codecpar->field_order = AV_FIELD_TT; |
|
break; |
|
case MXF_FIELD_DOMINANCE_FL: |
|
st->codecpar->field_order = AV_FIELD_TB; |
|
break; |
|
default: |
|
avpriv_request_sample(mxf->fc, |
|
"Field dominance %d support", |
|
descriptor->field_dominance); |
|
} |
|
} else { |
|
switch (descriptor->field_dominance) { |
|
case MXF_FIELD_DOMINANCE_DEFAULT: |
|
case MXF_FIELD_DOMINANCE_FF: |
|
st->codecpar->field_order = AV_FIELD_BB; |
|
break; |
|
case MXF_FIELD_DOMINANCE_FL: |
|
st->codecpar->field_order = AV_FIELD_BT; |
|
break; |
|
default: |
|
avpriv_request_sample(mxf->fc, |
|
"Field dominance %d support", |
|
descriptor->field_dominance); |
|
} |
|
} |
|
} |
|
/* Turn field height into frame height. */ |
|
st->codecpar->height *= 2; |
|
break; |
|
default: |
|
av_log(mxf->fc, AV_LOG_INFO, "Unknown frame layout type: %d\n", descriptor->frame_layout); |
|
} |
|
|
|
if (mxf_is_st_422(essence_container_ul)) { |
|
switch ((*essence_container_ul)[14]) { |
|
case 2: /* Cn: Clip- wrapped Picture Element */ |
|
case 3: /* I1: Interlaced Frame, 1 field/KLV */ |
|
case 4: /* I2: Interlaced Frame, 2 fields/KLV */ |
|
case 6: /* P1: Frame- wrapped Picture Element */ |
|
st->avg_frame_rate = source_track->edit_rate; |
|
st->r_frame_rate = st->avg_frame_rate; |
|
break; |
|
case 5: /* F1: Field-wrapped Picture Element */ |
|
st->avg_frame_rate = av_mul_q(av_make_q(2, 1), source_track->edit_rate); |
|
st->r_frame_rate = st->avg_frame_rate; |
|
break; |
|
default: |
|
break; |
|
} |
|
} |
|
|
|
if (st->codecpar->codec_id == AV_CODEC_ID_PRORES) { |
|
switch (descriptor->essence_codec_ul[14]) { |
|
case 1: st->codecpar->codec_tag = MKTAG('a','p','c','o'); break; |
|
case 2: st->codecpar->codec_tag = MKTAG('a','p','c','s'); break; |
|
case 3: st->codecpar->codec_tag = MKTAG('a','p','c','n'); break; |
|
case 4: st->codecpar->codec_tag = MKTAG('a','p','c','h'); break; |
|
case 5: st->codecpar->codec_tag = MKTAG('a','p','4','h'); break; |
|
case 6: st->codecpar->codec_tag = MKTAG('a','p','4','x'); break; |
|
} |
|
} |
|
|
|
if (st->codecpar->codec_id == AV_CODEC_ID_RAWVIDEO) { |
|
st->codecpar->format = descriptor->pix_fmt; |
|
if (st->codecpar->format == AV_PIX_FMT_NONE) { |
|
pix_fmt_ul = mxf_get_codec_ul(ff_mxf_pixel_format_uls, |
|
&descriptor->essence_codec_ul); |
|
st->codecpar->format = (enum AVPixelFormat)pix_fmt_ul->id; |
|
if (st->codecpar->format== AV_PIX_FMT_NONE) { |
|
st->codecpar->codec_tag = mxf_get_codec_ul(ff_mxf_codec_tag_uls, |
|
&descriptor->essence_codec_ul)->id; |
|
if (!st->codecpar->codec_tag) { |
|
/* support files created before RP224v10 by defaulting to UYVY422 |
|
if subsampling is 4:2:2 and component depth is 8-bit */ |
|
if (descriptor->horiz_subsampling == 2 && |
|
descriptor->vert_subsampling == 1 && |
|
descriptor->component_depth == 8) { |
|
st->codecpar->format = AV_PIX_FMT_UYVY422; |
|
} |
|
} |
|
} |
|
} |
|
} |
|
sti->need_parsing = AVSTREAM_PARSE_HEADERS; |
|
if (material_track->sequence->origin) { |
|
av_dict_set_int(&st->metadata, "material_track_origin", material_track->sequence->origin, 0); |
|
} |
|
if (source_track->sequence->origin) { |
|
av_dict_set_int(&st->metadata, "source_track_origin", source_track->sequence->origin, 0); |
|
} |
|
if (descriptor->aspect_ratio.num && descriptor->aspect_ratio.den) |
|
sti->display_aspect_ratio = descriptor->aspect_ratio; |
|
st->codecpar->color_range = mxf_get_color_range(mxf, descriptor); |
|
st->codecpar->color_primaries = mxf_get_codec_ul(ff_mxf_color_primaries_uls, &descriptor->color_primaries_ul)->id; |
|
st->codecpar->color_trc = mxf_get_codec_ul(ff_mxf_color_trc_uls, &descriptor->color_trc_ul)->id; |
|
st->codecpar->color_space = mxf_get_codec_ul(ff_mxf_color_space_uls, &descriptor->color_space_ul)->id; |
|
if (descriptor->mastering) { |
|
if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data, |
|
AV_PKT_DATA_MASTERING_DISPLAY_METADATA, |
|
(uint8_t *)descriptor->mastering, sizeof(*descriptor->mastering), 0)) { |
|
ret = AVERROR(ENOMEM); |
|
goto fail_and_free; |
|
} |
|
descriptor->mastering = NULL; |
|
} |
|
if (descriptor->coll) { |
|
if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data, |
|
AV_PKT_DATA_CONTENT_LIGHT_LEVEL, |
|
(uint8_t *)descriptor->coll, descriptor->coll_size, 0)) { |
|
ret = AVERROR(ENOMEM); |
|
goto fail_and_free; |
|
} |
|
descriptor->coll = NULL; |
|
} |
|
} else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) { |
|
container_ul = mxf_get_codec_ul(mxf_sound_essence_container_uls, essence_container_ul); |
|
/* Only overwrite existing codec ID if it is unset or A-law, which is the default according to SMPTE RP 224. */ |
|
if (st->codecpar->codec_id == AV_CODEC_ID_NONE || (st->codecpar->codec_id == AV_CODEC_ID_PCM_ALAW && (enum AVCodecID)container_ul->id != AV_CODEC_ID_NONE)) |
|
st->codecpar->codec_id = (enum AVCodecID)container_ul->id; |
|
st->codecpar->ch_layout.nb_channels = descriptor->channels; |
|
|
|
if (descriptor->sample_rate.den > 0) { |
|
st->codecpar->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den; |
|
avpriv_set_pts_info(st, 64, descriptor->sample_rate.den, descriptor->sample_rate.num); |
|
} else { |
|
av_log(mxf->fc, AV_LOG_WARNING, "invalid sample rate (%d/%d) " |
|
"found for stream #%d, time base forced to 1/48000\n", |
|
descriptor->sample_rate.num, descriptor->sample_rate.den, |
|
st->index); |
|
avpriv_set_pts_info(st, 64, 1, 48000); |
|
} |
|
|
|
/* if duration is set, rescale it from EditRate to SampleRate */ |
|
if (st->duration != AV_NOPTS_VALUE) |
|
st->duration = av_rescale_q(st->duration, |
|
av_inv_q(material_track->edit_rate), |
|
st->time_base); |
|
|
|
/* TODO: implement AV_CODEC_ID_RAWAUDIO */ |
|
if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE) { |
|
if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24) |
|
st->codecpar->codec_id = AV_CODEC_ID_PCM_S24LE; |
|
else if (descriptor->bits_per_sample == 32) |
|
st->codecpar->codec_id = AV_CODEC_ID_PCM_S32LE; |
|
} else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE) { |
|
if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24) |
|
st->codecpar->codec_id = AV_CODEC_ID_PCM_S24BE; |
|
else if (descriptor->bits_per_sample == 32) |
|
st->codecpar->codec_id = AV_CODEC_ID_PCM_S32BE; |
|
} else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) { |
|
sti->need_parsing = AVSTREAM_PARSE_FULL; |
|
} else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) { |
|
sti->need_parsing = AVSTREAM_PARSE_FULL; |
|
} |
|
st->codecpar->bits_per_coded_sample = av_get_bits_per_sample(st->codecpar->codec_id); |
|
|
|
if (descriptor->channels <= 0 || descriptor->channels >= FF_SANE_NB_CHANNELS) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "Invalid number of channels %d, must be less than %d\n", descriptor->channels, FF_SANE_NB_CHANNELS); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
ret = parse_mca_labels(mxf, source_track, descriptor, st); |
|
if (ret < 0) |
|
return ret; |
|
} else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) { |
|
enum AVMediaType type; |
|
container_ul = mxf_get_codec_ul(mxf_data_essence_container_uls, essence_container_ul); |
|
if (st->codecpar->codec_id == AV_CODEC_ID_NONE) |
|
st->codecpar->codec_id = container_ul->id; |
|
type = avcodec_get_type(st->codecpar->codec_id); |
|
if (type == AVMEDIA_TYPE_SUBTITLE) |
|
st->codecpar->codec_type = type; |
|
if (container_ul->desc) |
|
av_dict_set(&st->metadata, "data_type", container_ul->desc, 0); |
|
if (mxf->eia608_extract && |
|
!strcmp(container_ul->desc, "vbi_vanc_smpte_436M")) { |
|
st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE; |
|
st->codecpar->codec_id = AV_CODEC_ID_EIA_608; |
|
} |
|
} |
|
if (!descriptor->extradata) |
|
parse_ffv1_sub_descriptor(mxf, source_track, descriptor, st); |
|
if (descriptor->extradata) { |
|
if (!ff_alloc_extradata(st->codecpar, descriptor->extradata_size)) { |
|
memcpy(st->codecpar->extradata, descriptor->extradata, descriptor->extradata_size); |
|
} |
|
} else if (st->codecpar->codec_id == AV_CODEC_ID_H264) { |
|
int coded_width = mxf_get_codec_ul(mxf_intra_only_picture_coded_width, |
|
&descriptor->essence_codec_ul)->id; |
|
if (coded_width) |
|
st->codecpar->width = coded_width; |
|
ret = ff_generate_avci_extradata(st); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
if (st->codecpar->codec_type != AVMEDIA_TYPE_DATA && source_track->wrapping != FrameWrapped) { |
|
/* TODO: decode timestamps */ |
|
sti->need_parsing = AVSTREAM_PARSE_TIMESTAMPS; |
|
} |
|
} |
|
|
|
for (int i = 0; i < mxf->fc->nb_streams; i++) { |
|
MXFTrack *track1 = mxf->fc->streams[i]->priv_data; |
|
if (track1 && track1->body_sid) { |
|
for (int j = i + 1; j < mxf->fc->nb_streams; j++) { |
|
MXFTrack *track2 = mxf->fc->streams[j]->priv_data; |
|
if (track2 && track1->body_sid == track2->body_sid && track1->wrapping != track2->wrapping) { |
|
if (track1->wrapping == UnknownWrapped) |
|
track1->wrapping = track2->wrapping; |
|
else if (track2->wrapping == UnknownWrapped) |
|
track2->wrapping = track1->wrapping; |
|
else |
|
av_log(mxf->fc, AV_LOG_ERROR, "stream %d and stream %d have the same BodySID (%d) " |
|
"with different wrapping\n", i, j, track1->body_sid); |
|
} |
|
} |
|
} |
|
} |
|
|
|
ret = 0; |
|
fail_and_free: |
|
return ret; |
|
} |
|
|
|
static int64_t mxf_timestamp_to_int64(uint64_t timestamp) |
|
{ |
|
struct tm time = { 0 }; |
|
int msecs; |
|
time.tm_year = (timestamp >> 48) - 1900; |
|
time.tm_mon = (timestamp >> 40 & 0xFF) - 1; |
|
time.tm_mday = (timestamp >> 32 & 0xFF); |
|
time.tm_hour = (timestamp >> 24 & 0xFF); |
|
time.tm_min = (timestamp >> 16 & 0xFF); |
|
time.tm_sec = (timestamp >> 8 & 0xFF); |
|
msecs = (timestamp & 0xFF) * 4; |
|
|
|
/* Clip values for legacy reasons. Maybe we should return error instead? */ |
|
time.tm_mon = av_clip(time.tm_mon, 0, 11); |
|
time.tm_mday = av_clip(time.tm_mday, 1, 31); |
|
time.tm_hour = av_clip(time.tm_hour, 0, 23); |
|
time.tm_min = av_clip(time.tm_min, 0, 59); |
|
time.tm_sec = av_clip(time.tm_sec, 0, 59); |
|
msecs = av_clip(msecs, 0, 999); |
|
|
|
return (int64_t)av_timegm(&time) * 1000000 + msecs * 1000; |
|
} |
|
|
|
#define SET_STR_METADATA(pb, name, str) do { \ |
|
if ((ret = mxf_read_utf16be_string(pb, size, &str)) < 0) \ |
|
return ret; \ |
|
av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \ |
|
} while (0) |
|
|
|
#define SET_VERSION_METADATA(pb, name, major, minor, tertiary, patch, release, str) do { \ |
|
major = avio_rb16(pb); \ |
|
minor = avio_rb16(pb); \ |
|
tertiary = avio_rb16(pb); \ |
|
patch = avio_rb16(pb); \ |
|
release = avio_rb16(pb); \ |
|
if ((ret = mxf_version_to_str(major, minor, tertiary, patch, release, &str)) < 0) \ |
|
return ret; \ |
|
av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \ |
|
} while (0) |
|
|
|
#define SET_UID_METADATA(pb, name, var, str) do { \ |
|
char uuid_str[2 * AV_UUID_LEN + 4 + 1]; \ |
|
avio_read(pb, var, 16); \ |
|
av_uuid_unparse(uid, uuid_str); \ |
|
av_dict_set(&s->metadata, name, uuid_str, 0); \ |
|
} while (0) |
|
|
|
#define SET_TS_METADATA(pb, name, var, str) do { \ |
|
var = avio_rb64(pb); \ |
|
if (var && (ret = avpriv_dict_set_timestamp(&s->metadata, name, mxf_timestamp_to_int64(var))) < 0) \ |
|
return ret; \ |
|
} while (0) |
|
|
|
static int mxf_read_identification_metadata(void *arg, AVIOContext *pb, int tag, int size, UID _uid, int64_t klv_offset) |
|
{ |
|
MXFContext *mxf = arg; |
|
AVFormatContext *s = mxf->fc; |
|
int ret; |
|
UID uid = { 0 }; |
|
char *str = NULL; |
|
uint64_t ts; |
|
uint16_t major, minor, tertiary, patch, release; |
|
switch (tag) { |
|
case 0x3C01: |
|
SET_STR_METADATA(pb, "company_name", str); |
|
break; |
|
case 0x3C02: |
|
SET_STR_METADATA(pb, "product_name", str); |
|
break; |
|
case 0x3C03: |
|
SET_VERSION_METADATA(pb, "product_version_num", major, minor, tertiary, patch, release, str); |
|
break; |
|
case 0x3C04: |
|
SET_STR_METADATA(pb, "product_version", str); |
|
break; |
|
case 0x3C05: |
|
SET_UID_METADATA(pb, "product_uid", uid, str); |
|
break; |
|
case 0x3C06: |
|
SET_TS_METADATA(pb, "modification_date", ts, str); |
|
break; |
|
case 0x3C07: |
|
SET_VERSION_METADATA(pb, "toolkit_version_num", major, minor, tertiary, patch, release, str); |
|
break; |
|
case 0x3C08: |
|
SET_STR_METADATA(pb, "application_platform", str); |
|
break; |
|
case 0x3C09: |
|
SET_UID_METADATA(pb, "generation_uid", uid, str); |
|
break; |
|
case 0x3C0A: |
|
SET_UID_METADATA(pb, "uid", uid, str); |
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_preface_metadata(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) |
|
{ |
|
MXFContext *mxf = arg; |
|
AVFormatContext *s = mxf->fc; |
|
int ret; |
|
char *str = NULL; |
|
|
|
if (tag >= 0x8000 && (IS_KLV_KEY(uid, mxf_avid_project_name))) { |
|
SET_STR_METADATA(pb, "project_name", str); |
|
} |
|
return 0; |
|
} |
|
|
|
static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = { |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x05,0x01,0x00 }, mxf_read_primer_pack }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }, mxf_read_partition_pack }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x02,0x00 }, mxf_read_partition_pack }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x03,0x00 }, mxf_read_partition_pack }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }, mxf_read_partition_pack }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x01,0x00 }, mxf_read_partition_pack }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x02,0x00 }, mxf_read_partition_pack }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x03,0x00 }, mxf_read_partition_pack }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }, mxf_read_partition_pack }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x02,0x00 }, mxf_read_partition_pack }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }, mxf_read_partition_pack }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x2f,0x00 }, mxf_read_preface_metadata }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x30,0x00 }, mxf_read_identification_metadata }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_content_storage }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_package, sizeof(MXFPackage), SourcePackage }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_package, sizeof(MXFPackage), MaterialPackage }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0f,0x00 }, mxf_read_sequence, sizeof(MXFSequence), Sequence }, |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x05,0x00 }, mxf_read_essence_group, sizeof(MXFEssenceGroup), EssenceGroup}, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_source_clip, sizeof(MXFStructuralComponent), SourceClip }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3f,0x00 }, mxf_read_tagged_value, sizeof(MXFTaggedValue), TaggedValue }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), MultipleDescriptor }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x42,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Generic Sound */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* CDCI */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* RGBA */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Wave */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* AES3 */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG2VideoDescriptor */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5b,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* VBI - SMPTE 436M */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5c,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* VANC/VBI - SMPTE 436M */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5e,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG2AudioDescriptor */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x64,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* DC Timed Text Descriptor */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x6b,0x00 }, mxf_read_mca_sub_descriptor, sizeof(MXFMCASubDescriptor), AudioChannelLabelSubDescriptor }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x6c,0x00 }, mxf_read_mca_sub_descriptor, sizeof(MXFMCASubDescriptor), SoundfieldGroupLabelSubDescriptor }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x6d,0x00 }, mxf_read_mca_sub_descriptor, sizeof(MXFMCASubDescriptor), GroupOfSoundfieldGroupsLabelSubDescriptor }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x81,0x03 }, mxf_read_ffv1_sub_descriptor, sizeof(MXFFFV1SubDescriptor), FFV1SubDescriptor }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Static Track */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Generic Track */ |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x14,0x00 }, mxf_read_timecode_component, sizeof(MXFTimecodeComponent), TimecodeComponent }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0c,0x00 }, mxf_read_pulldown_component, sizeof(MXFPulldownComponent), PulldownComponent }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x04,0x01,0x02,0x02,0x00,0x00 }, mxf_read_cryptographic_context, sizeof(MXFCryptoContext), CryptoContext }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 }, mxf_read_index_table_segment, sizeof(MXFIndexTableSegment), IndexTableSegment }, |
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x23,0x00 }, mxf_read_essence_container_data, sizeof(MXFEssenceContainerData), EssenceContainerData }, |
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL }, |
|
}; |
|
|
|
static int mxf_metadataset_init(MXFMetadataSet *ctx, enum MXFMetadataSetType type, MXFPartition *partition) |
|
{ |
|
ctx->partition_score = partition_score(partition); |
|
switch (type){ |
|
case MultipleDescriptor: |
|
case Descriptor: |
|
((MXFDescriptor*)ctx)->pix_fmt = AV_PIX_FMT_NONE; |
|
((MXFDescriptor*)ctx)->duration = AV_NOPTS_VALUE; |
|
break; |
|
default: |
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_local_tags(MXFContext *mxf, KLVPacket *klv, MXFMetadataReadFunc *read_child, int ctx_size, enum MXFMetadataSetType type) |
|
{ |
|
AVIOContext *pb = mxf->fc->pb; |
|
uint64_t klv_end = avio_tell(pb) + klv->length; |
|
MXFMetadataSet *meta; |
|
void *ctx; |
|
|
|
if (ctx_size) { |
|
meta = av_mallocz(ctx_size); |
|
if (!meta) |
|
return AVERROR(ENOMEM); |
|
ctx = meta; |
|
mxf_metadataset_init(meta, type, mxf->current_partition); |
|
} else { |
|
meta = NULL; |
|
ctx = mxf; |
|
} |
|
while (avio_tell(pb) + 4ULL < klv_end && !avio_feof(pb)) { |
|
int ret; |
|
int tag = avio_rb16(pb); |
|
int size = avio_rb16(pb); /* KLV specified by 0x53 */ |
|
int64_t next = avio_tell(pb); |
|
UID uid = {0}; |
|
if (next < 0 || next > INT64_MAX - size) { |
|
if (meta) { |
|
mxf_free_metadataset(&meta, type); |
|
} |
|
return next < 0 ? next : AVERROR_INVALIDDATA; |
|
} |
|
next += size; |
|
|
|
av_log(mxf->fc, AV_LOG_TRACE, "local tag %#04x size %d\n", tag, size); |
|
if (!size) { /* ignore empty tag, needed for some files with empty UMID tag */ |
|
av_log(mxf->fc, AV_LOG_ERROR, "local tag %#04x with 0 size\n", tag); |
|
continue; |
|
} |
|
if (tag > 0x7FFF) { /* dynamic tag */ |
|
int i; |
|
for (i = 0; i < mxf->local_tags_count; i++) { |
|
int local_tag = AV_RB16(mxf->local_tags+i*18); |
|
if (local_tag == tag) { |
|
memcpy(uid, mxf->local_tags+i*18+2, 16); |
|
av_log(mxf->fc, AV_LOG_TRACE, "local tag %#04x\n", local_tag); |
|
PRINT_KEY(mxf->fc, "uid", uid); |
|
} |
|
} |
|
} |
|
if (meta && tag == 0x3C0A) { |
|
avio_read(pb, meta->uid, 16); |
|
} else if ((ret = read_child(ctx, pb, tag, size, uid, -1)) < 0) { |
|
if (meta) { |
|
mxf_free_metadataset(&meta, type); |
|
} |
|
return ret; |
|
} |
|
|
|
/* Accept the 64k local set limit being exceeded (Avid). Don't accept |
|
* it extending past the end of the KLV though (zzuf5.mxf). */ |
|
if (avio_tell(pb) > klv_end) { |
|
if (meta) { |
|
mxf_free_metadataset(&meta, type); |
|
} |
|
|
|
av_log(mxf->fc, AV_LOG_ERROR, |
|
"local tag %#04x extends past end of local set @ %#"PRIx64"\n", |
|
tag, klv->offset); |
|
return AVERROR_INVALIDDATA; |
|
} else if (avio_tell(pb) <= next) /* only seek forward, else this can loop for a long time */ |
|
avio_seek(pb, next, SEEK_SET); |
|
} |
|
return meta ? mxf_add_metadata_set(mxf, &meta, type) : 0; |
|
} |
|
|
|
/** |
|
* Matches any partition pack key, in other words: |
|
* - HeaderPartition |
|
* - BodyPartition |
|
* - FooterPartition |
|
* @return non-zero if the key is a partition pack key, zero otherwise |
|
*/ |
|
static int mxf_is_partition_pack_key(UID key) |
|
{ |
|
//NOTE: this is a little lax since it doesn't constraint key[14] |
|
return !memcmp(key, mxf_header_partition_pack_key, 13) && |
|
key[13] >= 2 && key[13] <= 4; |
|
} |
|
|
|
/** |
|
* Parses a metadata KLV |
|
* @return <0 on error, 0 otherwise |
|
*/ |
|
static int mxf_parse_klv(MXFContext *mxf, KLVPacket klv, MXFMetadataReadFunc *read, |
|
int ctx_size, enum MXFMetadataSetType type) |
|
{ |
|
AVFormatContext *s = mxf->fc; |
|
int res; |
|
if (klv.key[5] == 0x53) { |
|
res = mxf_read_local_tags(mxf, &klv, read, ctx_size, type); |
|
} else { |
|
uint64_t next = avio_tell(s->pb) + klv.length; |
|
res = read(mxf, s->pb, 0, klv.length, klv.key, klv.offset); |
|
|
|
/* only seek forward, else this can loop for a long time */ |
|
if (avio_tell(s->pb) > next) { |
|
av_log(s, AV_LOG_ERROR, "read past end of KLV @ %#"PRIx64"\n", |
|
klv.offset); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
avio_seek(s->pb, next, SEEK_SET); |
|
} |
|
if (res < 0) { |
|
av_log(s, AV_LOG_ERROR, "error reading header metadata\n"); |
|
return res; |
|
} |
|
return 0; |
|
} |
|
|
|
/** |
|
* Seeks to the previous partition and parses it, if possible |
|
* @return <= 0 if we should stop parsing, > 0 if we should keep going |
|
*/ |
|
static int mxf_seek_to_previous_partition(MXFContext *mxf) |
|
{ |
|
AVIOContext *pb = mxf->fc->pb; |
|
KLVPacket klv; |
|
int64_t current_partition_ofs; |
|
int ret; |
|
|
|
if (!mxf->current_partition || |
|
mxf->run_in + mxf->current_partition->previous_partition <= mxf->last_forward_tell) |
|
return 0; /* we've parsed all partitions */ |
|
|
|
/* seek to previous partition */ |
|
current_partition_ofs = mxf->current_partition->pack_ofs; //includes run-in |
|
avio_seek(pb, mxf->run_in + mxf->current_partition->previous_partition, SEEK_SET); |
|
mxf->current_partition = NULL; |
|
|
|
av_log(mxf->fc, AV_LOG_TRACE, "seeking to previous partition\n"); |
|
|
|
/* Make sure this is actually a PartitionPack, and if so parse it. |
|
* See deadlock2.mxf |
|
*/ |
|
if ((ret = klv_read_packet(mxf, &klv, pb)) < 0) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "failed to read PartitionPack KLV\n"); |
|
return ret; |
|
} |
|
|
|
if (!mxf_is_partition_pack_key(klv.key)) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "PreviousPartition @ %" PRIx64 " isn't a PartitionPack\n", klv.offset); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
/* We can't just check ofs >= current_partition_ofs because PreviousPartition |
|
* can point to just before the current partition, causing klv_read_packet() |
|
* to sync back up to it. See deadlock3.mxf |
|
*/ |
|
if (klv.offset >= current_partition_ofs) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "PreviousPartition for PartitionPack @ %" |
|
PRIx64 " indirectly points to itself\n", current_partition_ofs); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if ((ret = mxf_parse_klv(mxf, klv, mxf_read_partition_pack, 0, 0)) < 0) |
|
return ret; |
|
|
|
return 1; |
|
} |
|
|
|
/** |
|
* Called when essence is encountered |
|
* @return <= 0 if we should stop parsing, > 0 if we should keep going |
|
*/ |
|
static int mxf_parse_handle_essence(MXFContext *mxf) |
|
{ |
|
AVIOContext *pb = mxf->fc->pb; |
|
int64_t ret; |
|
|
|
if (mxf->parsing_backward) { |
|
return mxf_seek_to_previous_partition(mxf); |
|
} else { |
|
if (!mxf->footer_partition) { |
|
av_log(mxf->fc, AV_LOG_TRACE, "no FooterPartition\n"); |
|
return 0; |
|
} |
|
|
|
av_log(mxf->fc, AV_LOG_TRACE, "seeking to FooterPartition\n"); |
|
|
|
/* remember where we were so we don't end up seeking further back than this */ |
|
mxf->last_forward_tell = avio_tell(pb); |
|
|
|
if (!(pb->seekable & AVIO_SEEKABLE_NORMAL)) { |
|
av_log(mxf->fc, AV_LOG_INFO, "file is not seekable - not parsing FooterPartition\n"); |
|
return -1; |
|
} |
|
|
|
/* seek to FooterPartition and parse backward */ |
|
if ((ret = avio_seek(pb, mxf->run_in + mxf->footer_partition, SEEK_SET)) < 0) { |
|
av_log(mxf->fc, AV_LOG_ERROR, |
|
"failed to seek to FooterPartition @ 0x%" PRIx64 |
|
" (%"PRId64") - partial file?\n", |
|
mxf->run_in + mxf->footer_partition, ret); |
|
return ret; |
|
} |
|
|
|
mxf->current_partition = NULL; |
|
mxf->parsing_backward = 1; |
|
} |
|
|
|
return 1; |
|
} |
|
|
|
/** |
|
* Called when the next partition or EOF is encountered |
|
* @return <= 0 if we should stop parsing, > 0 if we should keep going |
|
*/ |
|
static int mxf_parse_handle_partition_or_eof(MXFContext *mxf) |
|
{ |
|
return mxf->parsing_backward ? mxf_seek_to_previous_partition(mxf) : 1; |
|
} |
|
|
|
static MXFWrappingScheme mxf_get_wrapping_by_body_sid(AVFormatContext *s, int body_sid) |
|
{ |
|
for (int i = 0; i < s->nb_streams; i++) { |
|
MXFTrack *track = s->streams[i]->priv_data; |
|
if (track && track->body_sid == body_sid && track->wrapping != UnknownWrapped) |
|
return track->wrapping; |
|
} |
|
return UnknownWrapped; |
|
} |
|
|
|
/** |
|
* Figures out the proper offset and length of the essence container in each partition |
|
*/ |
|
static void mxf_compute_essence_containers(AVFormatContext *s) |
|
{ |
|
MXFContext *mxf = s->priv_data; |
|
int x; |
|
|
|
for (x = 0; x < mxf->partitions_count; x++) { |
|
MXFPartition *p = &mxf->partitions[x]; |
|
MXFWrappingScheme wrapping; |
|
|
|
if (!p->body_sid) |
|
continue; /* BodySID == 0 -> no essence */ |
|
|
|
/* for clip wrapped essences we point essence_offset after the KL (usually klv.offset + 20 or 25) |
|
* otherwise we point essence_offset at the key of the first essence KLV. |
|
*/ |
|
|
|
wrapping = (mxf->op == OPAtom) ? ClipWrapped : mxf_get_wrapping_by_body_sid(s, p->body_sid); |
|
|
|
if (wrapping == ClipWrapped) { |
|
p->essence_offset = p->first_essence_klv.next_klv - p->first_essence_klv.length; |
|
p->essence_length = p->first_essence_klv.length; |
|
} else { |
|
p->essence_offset = p->first_essence_klv.offset; |
|
|
|
/* essence container spans to the next partition */ |
|
if (x < mxf->partitions_count - 1) |
|
p->essence_length = mxf->partitions[x+1].pack_ofs - mxf->run_in - p->essence_offset; |
|
|
|
if (p->essence_length < 0) { |
|
/* next ThisPartition < essence_offset */ |
|
p->essence_length = 0; |
|
av_log(mxf->fc, AV_LOG_ERROR, |
|
"partition %i: bad ThisPartition = %"PRIX64"\n", |
|
x+1, mxf->partitions[x+1].pack_ofs - mxf->run_in); |
|
} |
|
} |
|
} |
|
} |
|
|
|
static MXFIndexTable *mxf_find_index_table(MXFContext *mxf, int index_sid) |
|
{ |
|
int i; |
|
for (i = 0; i < mxf->nb_index_tables; i++) |
|
if (mxf->index_tables[i].index_sid == index_sid) |
|
return &mxf->index_tables[i]; |
|
return NULL; |
|
} |
|
|
|
/** |
|
* Deal with the case where for some audio atoms EditUnitByteCount is |
|
* very small (2, 4..). In those cases we should read more than one |
|
* sample per call to mxf_read_packet(). |
|
*/ |
|
static void mxf_compute_edit_units_per_packet(MXFContext *mxf, AVStream *st) |
|
{ |
|
MXFTrack *track = st->priv_data; |
|
MXFIndexTable *t; |
|
|
|
if (!track) |
|
return; |
|
track->edit_units_per_packet = 1; |
|
if (track->wrapping != ClipWrapped) |
|
return; |
|
|
|
t = mxf_find_index_table(mxf, track->index_sid); |
|
|
|
/* expect PCM with exactly one index table segment and a small (< 32) EUBC */ |
|
if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO || |
|
!is_pcm(st->codecpar->codec_id) || |
|
!t || |
|
t->nb_segments != 1 || |
|
t->segments[0]->edit_unit_byte_count >= 32) |
|
return; |
|
|
|
/* arbitrarily default to 48 kHz PAL audio frame size */ |
|
/* TODO: We could compute this from the ratio between the audio |
|
* and video edit rates for 48 kHz NTSC we could use the |
|
* 1802-1802-1802-1802-1801 pattern. */ |
|
track->edit_units_per_packet = FFMAX(1, track->edit_rate.num / track->edit_rate.den / 25); |
|
} |
|
|
|
/** |
|
* Deal with the case where ClipWrapped essences does not have any IndexTableSegments. |
|
*/ |
|
static int mxf_handle_missing_index_segment(MXFContext *mxf, AVStream *st) |
|
{ |
|
MXFTrack *track = st->priv_data; |
|
MXFIndexTableSegment *segment = NULL; |
|
MXFPartition *p = NULL; |
|
int essence_partition_count = 0; |
|
int edit_unit_byte_count = 0; |
|
int i, ret; |
|
MXFMetadataSetGroup *mg = &mxf->metadata_set_groups[IndexTableSegment]; |
|
|
|
if (!track || track->wrapping != ClipWrapped) |
|
return 0; |
|
|
|
/* check if track already has an IndexTableSegment */ |
|
for (i = 0; i < mg->metadata_sets_count; i++) { |
|
MXFIndexTableSegment *s = (MXFIndexTableSegment*)mg->metadata_sets[i]; |
|
if (s->body_sid == track->body_sid) |
|
return 0; |
|
} |
|
|
|
/* find the essence partition */ |
|
for (i = 0; i < mxf->partitions_count; i++) { |
|
/* BodySID == 0 -> no essence */ |
|
if (mxf->partitions[i].body_sid != track->body_sid) |
|
continue; |
|
|
|
p = &mxf->partitions[i]; |
|
essence_partition_count++; |
|
} |
|
|
|
/* only handle files with a single essence partition */ |
|
if (essence_partition_count != 1) |
|
return 0; |
|
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && is_pcm(st->codecpar->codec_id)) { |
|
edit_unit_byte_count = (av_get_bits_per_sample(st->codecpar->codec_id) * |
|
st->codecpar->ch_layout.nb_channels) >> 3; |
|
} else if (st->duration > 0 && p->first_essence_klv.length > 0 && p->first_essence_klv.length % st->duration == 0) { |
|
edit_unit_byte_count = p->first_essence_klv.length / st->duration; |
|
} |
|
|
|
if (edit_unit_byte_count <= 0) |
|
return 0; |
|
|
|
av_log(mxf->fc, AV_LOG_WARNING, "guessing index for stream %d using edit unit byte count %d\n", st->index, edit_unit_byte_count); |
|
|
|
if (!(segment = av_mallocz(sizeof(*segment)))) |
|
return AVERROR(ENOMEM); |
|
|
|
if ((ret = mxf_add_metadata_set(mxf, (MXFMetadataSet**)&segment, IndexTableSegment))) |
|
return ret; |
|
|
|
/* Make sure we have nonzero unique index_sid, body_sid will be ok, because |
|
* using the same SID for index is forbidden in MXF. */ |
|
if (!track->index_sid) |
|
track->index_sid = track->body_sid; |
|
|
|
/* stream will be treated as small EditUnitByteCount */ |
|
segment->edit_unit_byte_count = edit_unit_byte_count; |
|
segment->index_start_position = 0; |
|
segment->index_duration = st->duration; |
|
segment->index_edit_rate = av_inv_q(st->time_base); |
|
segment->index_sid = track->index_sid; |
|
segment->body_sid = p->body_sid; |
|
return 0; |
|
} |
|
|
|
static void mxf_read_random_index_pack(AVFormatContext *s) |
|
{ |
|
MXFContext *mxf = s->priv_data; |
|
uint32_t length; |
|
int64_t file_size, max_rip_length, min_rip_length; |
|
KLVPacket klv; |
|
|
|
if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL)) |
|
return; |
|
|
|
file_size = avio_size(s->pb); |
|
|
|
/* S377m says to check the RIP length for "silly" values, without defining "silly". |
|
* The limit below assumes a file with nothing but partition packs and a RIP. |
|
* Before changing this, consider that a muxer may place each sample in its own partition. |
|
* |
|
* 105 is the size of the smallest possible PartitionPack |
|
* 12 is the size of each RIP entry |
|
* 28 is the size of the RIP header and footer, assuming an 8-byte BER |
|
*/ |
|
max_rip_length = ((file_size - mxf->run_in) / 105) * 12 + 28; |
|
max_rip_length = FFMIN(max_rip_length, INT_MAX); //2 GiB and up is also silly |
|
|
|
/* We're only interested in RIPs with at least two entries.. */ |
|
min_rip_length = 16+1+24+4; |
|
|
|
/* See S377m section 11 */ |
|
avio_seek(s->pb, file_size - 4, SEEK_SET); |
|
length = avio_rb32(s->pb); |
|
|
|
if (length < min_rip_length || length > max_rip_length) |
|
goto end; |
|
avio_seek(s->pb, file_size - length, SEEK_SET); |
|
if (klv_read_packet(mxf, &klv, s->pb) < 0 || |
|
!IS_KLV_KEY(klv.key, ff_mxf_random_index_pack_key)) |
|
goto end; |
|
if (klv.next_klv != file_size || klv.length <= 4 || (klv.length - 4) % 12) { |
|
av_log(s, AV_LOG_WARNING, "Invalid RIP KLV length\n"); |
|
goto end; |
|
} |
|
|
|
avio_skip(s->pb, klv.length - 12); |
|
mxf->footer_partition = avio_rb64(s->pb); |
|
|
|
/* sanity check */ |
|
if (mxf->run_in + mxf->footer_partition >= file_size) { |
|
av_log(s, AV_LOG_WARNING, "bad FooterPartition in RIP - ignoring\n"); |
|
mxf->footer_partition = 0; |
|
} |
|
|
|
end: |
|
avio_seek(s->pb, mxf->run_in, SEEK_SET); |
|
} |
|
|
|
static int mxf_read_header(AVFormatContext *s) |
|
{ |
|
MXFContext *mxf = s->priv_data; |
|
KLVPacket klv; |
|
int64_t essence_offset = 0; |
|
int ret; |
|
int64_t run_in; |
|
|
|
mxf->last_forward_tell = INT64_MAX; |
|
|
|
if (!mxf_read_sync(s->pb, mxf_header_partition_pack_key, 14)) { |
|
av_log(s, AV_LOG_ERROR, "could not find header partition pack key\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
avio_seek(s->pb, -14, SEEK_CUR); |
|
mxf->fc = s; |
|
run_in = avio_tell(s->pb); |
|
if (run_in < 0 || run_in > RUN_IN_MAX) |
|
return AVERROR_INVALIDDATA; |
|
mxf->run_in = run_in; |
|
|
|
mxf_read_random_index_pack(s); |
|
|
|
while (!avio_feof(s->pb)) { |
|
const MXFMetadataReadTableEntry *metadata; |
|
|
|
ret = klv_read_packet(mxf, &klv, s->pb); |
|
if (ret < 0 || IS_KLV_KEY(klv.key, ff_mxf_random_index_pack_key)) { |
|
if (ret >= 0 && avio_size(s->pb) > klv.next_klv) |
|
av_log(s, AV_LOG_WARNING, "data after the RandomIndexPack, assuming end of file\n"); |
|
/* EOF - seek to previous partition or stop */ |
|
if(mxf_parse_handle_partition_or_eof(mxf) <= 0) |
|
break; |
|
else |
|
continue; |
|
} |
|
|
|
PRINT_KEY(s, "read header", klv.key); |
|
av_log(s, AV_LOG_TRACE, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset); |
|
if (mxf_match_uid(klv.key, mxf_encrypted_triplet_key, sizeof(mxf_encrypted_triplet_key)) || |
|
IS_KLV_KEY(klv.key, mxf_essence_element_key) || |
|
IS_KLV_KEY(klv.key, mxf_canopus_essence_element_key) || |
|
IS_KLV_KEY(klv.key, mxf_avid_essence_element_key) || |
|
IS_KLV_KEY(klv.key, mxf_system_item_key_cp) || |
|
IS_KLV_KEY(klv.key, mxf_system_item_key_gc)) { |
|
|
|
if (!mxf->current_partition) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "found essence prior to first PartitionPack\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
if (!mxf->current_partition->first_essence_klv.offset) |
|
mxf->current_partition->first_essence_klv = klv; |
|
|
|
if (!essence_offset) |
|
essence_offset = klv.offset; |
|
|
|
/* seek to footer, previous partition or stop */ |
|
if (mxf_parse_handle_essence(mxf) <= 0) |
|
break; |
|
continue; |
|
} else if (mxf_is_partition_pack_key(klv.key) && mxf->current_partition) { |
|
/* next partition pack - keep going, seek to previous partition or stop */ |
|
if(mxf_parse_handle_partition_or_eof(mxf) <= 0) |
|
break; |
|
else if (mxf->parsing_backward) |
|
continue; |
|
/* we're still parsing forward. proceed to parsing this partition pack */ |
|
} |
|
|
|
for (metadata = mxf_metadata_read_table; metadata->read; metadata++) { |
|
if (IS_KLV_KEY(klv.key, metadata->key)) { |
|
if ((ret = mxf_parse_klv(mxf, klv, metadata->read, metadata->ctx_size, metadata->type)) < 0) |
|
return ret; |
|
break; |
|
} |
|
} |
|
if (!metadata->read) { |
|
av_log(s, AV_LOG_VERBOSE, "Dark key " PRIxUID "\n", |
|
UID_ARG(klv.key)); |
|
avio_skip(s->pb, klv.length); |
|
} |
|
} |
|
/* FIXME avoid seek */ |
|
if (!essence_offset) { |
|
av_log(s, AV_LOG_ERROR, "no essence\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
avio_seek(s->pb, essence_offset, SEEK_SET); |
|
|
|
/* we need to do this before computing the index tables |
|
* to be able to fill in zero IndexDurations with st->duration */ |
|
if ((ret = mxf_parse_structural_metadata(mxf)) < 0) |
|
return ret; |
|
|
|
for (int i = 0; i < s->nb_streams; i++) |
|
mxf_handle_missing_index_segment(mxf, s->streams[i]); |
|
|
|
if ((ret = mxf_compute_index_tables(mxf)) < 0) |
|
return ret; |
|
|
|
if (mxf->nb_index_tables > 1) { |
|
/* TODO: look up which IndexSID to use via EssenceContainerData */ |
|
av_log(mxf->fc, AV_LOG_INFO, "got %i index tables - only the first one (IndexSID %i) will be used\n", |
|
mxf->nb_index_tables, mxf->index_tables[0].index_sid); |
|
} else if (mxf->nb_index_tables == 0 && mxf->op == OPAtom && (s->error_recognition & AV_EF_EXPLODE)) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "cannot demux OPAtom without an index\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
mxf_compute_essence_containers(s); |
|
|
|
for (int i = 0; i < s->nb_streams; i++) |
|
mxf_compute_edit_units_per_packet(mxf, s->streams[i]); |
|
|
|
return 0; |
|
} |
|
|
|
/* Get the edit unit of the next packet from current_offset in a track. The returned edit unit can be original_duration as well! */ |
|
static int mxf_get_next_track_edit_unit(MXFContext *mxf, MXFTrack *track, int64_t current_offset, int64_t *edit_unit_out) |
|
{ |
|
int64_t a, b, m, offset; |
|
MXFIndexTable *t = mxf_find_index_table(mxf, track->index_sid); |
|
|
|
if (!t || track->original_duration <= 0) |
|
return -1; |
|
|
|
a = -1; |
|
b = track->original_duration; |
|
|
|
while (b - a > 1) { |
|
m = (a + b) >> 1; |
|
if (mxf_edit_unit_absolute_offset(mxf, t, m, track->edit_rate, NULL, &offset, NULL, 0) < 0) |
|
return -1; |
|
if (offset < current_offset) |
|
a = m; |
|
else |
|
b = m; |
|
} |
|
|
|
*edit_unit_out = b; |
|
|
|
return 0; |
|
} |
|
|
|
static int64_t mxf_compute_sample_count(MXFContext *mxf, AVStream *st, |
|
int64_t edit_unit) |
|
{ |
|
MXFTrack *track = st->priv_data; |
|
AVRational time_base = av_inv_q(track->edit_rate); |
|
AVRational sample_rate = av_inv_q(st->time_base); |
|
|
|
// For non-audio sample_count equals current edit unit |
|
if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO) |
|
return edit_unit; |
|
|
|
if ((sample_rate.num / sample_rate.den) == 48000) { |
|
return av_rescale_q(edit_unit, sample_rate, track->edit_rate); |
|
} else { |
|
int64_t remainder = (sample_rate.num * (int64_t) time_base.num) % |
|
( time_base.den * (int64_t)sample_rate.den); |
|
if (remainder) |
|
av_log(mxf->fc, AV_LOG_WARNING, |
|
"seeking detected on stream #%d with time base (%d/%d) and " |
|
"sample rate (%d/%d), audio pts won't be accurate.\n", |
|
st->index, time_base.num, time_base.den, |
|
sample_rate.num, sample_rate.den); |
|
return av_rescale_q(edit_unit, sample_rate, track->edit_rate); |
|
} |
|
} |
|
|
|
/** |
|
* Make sure track->sample_count is correct based on what offset we're currently at. |
|
* Also determine the next edit unit (or packet) offset. |
|
* @return next_ofs if OK, <0 on error |
|
*/ |
|
static int64_t mxf_set_current_edit_unit(MXFContext *mxf, AVStream *st, int64_t current_offset, int resync) |
|
{ |
|
int64_t next_ofs = -1; |
|
MXFTrack *track = st->priv_data; |
|
int64_t edit_unit = av_rescale_q(track->sample_count, st->time_base, av_inv_q(track->edit_rate)); |
|
int64_t new_edit_unit; |
|
MXFIndexTable *t = mxf_find_index_table(mxf, track->index_sid); |
|
|
|
if (!t || track->wrapping == UnknownWrapped) |
|
return -1; |
|
|
|
if (mxf_edit_unit_absolute_offset(mxf, t, edit_unit + track->edit_units_per_packet, track->edit_rate, NULL, &next_ofs, NULL, 0) < 0 && |
|
(next_ofs = mxf_essence_container_end(mxf, t->body_sid)) <= 0) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "unable to compute the size of the last packet\n"); |
|
return -1; |
|
} |
|
|
|
/* check if the next edit unit offset (next_ofs) starts ahead of current_offset */ |
|
if (next_ofs > current_offset) |
|
return next_ofs; |
|
|
|
if (!resync) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "cannot find current edit unit for stream %d, invalid index?\n", st->index); |
|
return -1; |
|
} |
|
|
|
if (mxf_get_next_track_edit_unit(mxf, track, current_offset + 1, &new_edit_unit) < 0 || new_edit_unit <= 0) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "failed to find next track edit unit in stream %d\n", st->index); |
|
return -1; |
|
} |
|
|
|
new_edit_unit--; |
|
track->sample_count = mxf_compute_sample_count(mxf, st, new_edit_unit); |
|
av_log(mxf->fc, AV_LOG_WARNING, "edit unit sync lost on stream %d, jumping from %"PRId64" to %"PRId64"\n", st->index, edit_unit, new_edit_unit); |
|
|
|
return mxf_set_current_edit_unit(mxf, st, current_offset, 0); |
|
} |
|
|
|
static int mxf_set_audio_pts(MXFContext *mxf, AVCodecParameters *par, |
|
AVPacket *pkt) |
|
{ |
|
AVStream *st = mxf->fc->streams[pkt->stream_index]; |
|
MXFTrack *track = st->priv_data; |
|
int64_t bits_per_sample = par->bits_per_coded_sample; |
|
|
|
if (!bits_per_sample) |
|
bits_per_sample = av_get_bits_per_sample(par->codec_id); |
|
|
|
pkt->pts = track->sample_count; |
|
|
|
if (par->ch_layout.nb_channels <= 0 || |
|
bits_per_sample <= 0 || |
|
par->ch_layout.nb_channels * (int64_t)bits_per_sample < 8) |
|
track->sample_count = mxf_compute_sample_count(mxf, st, av_rescale_q(track->sample_count, st->time_base, av_inv_q(track->edit_rate)) + 1); |
|
else |
|
track->sample_count += pkt->size / (par->ch_layout.nb_channels * (int64_t)bits_per_sample / 8); |
|
|
|
return 0; |
|
} |
|
|
|
static int mxf_set_pts(MXFContext *mxf, AVStream *st, AVPacket *pkt) |
|
{ |
|
AVCodecParameters *par = st->codecpar; |
|
MXFTrack *track = st->priv_data; |
|
|
|
if (par->codec_type == AVMEDIA_TYPE_VIDEO) { |
|
/* see if we have an index table to derive timestamps from */ |
|
MXFIndexTable *t = mxf_find_index_table(mxf, track->index_sid); |
|
|
|
if (t && track->sample_count < t->nb_ptses) { |
|
pkt->dts = track->sample_count + t->first_dts; |
|
pkt->pts = t->ptses[track->sample_count]; |
|
} else if (track->intra_only) { |
|
/* intra-only -> PTS = EditUnit. |
|
* let utils.c figure out DTS since it can be < PTS if low_delay = 0 (Sony IMX30) */ |
|
pkt->pts = track->sample_count; |
|
} |
|
track->sample_count++; |
|
} else if (par->codec_type == AVMEDIA_TYPE_AUDIO) { |
|
int ret = mxf_set_audio_pts(mxf, par, pkt); |
|
if (ret < 0) |
|
return ret; |
|
} else if (track) { |
|
pkt->dts = pkt->pts = track->sample_count; |
|
pkt->duration = 1; |
|
track->sample_count++; |
|
} |
|
return 0; |
|
} |
|
|
|
static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt) |
|
{ |
|
KLVPacket klv; |
|
MXFContext *mxf = s->priv_data; |
|
int ret; |
|
|
|
while (1) { |
|
int64_t max_data_size; |
|
int64_t pos = avio_tell(s->pb); |
|
|
|
if (pos < mxf->current_klv_data.next_klv - mxf->current_klv_data.length || pos >= mxf->current_klv_data.next_klv) { |
|
mxf->current_klv_data = (KLVPacket){{0}}; |
|
ret = klv_read_packet(mxf, &klv, s->pb); |
|
if (ret < 0) |
|
break; |
|
max_data_size = klv.length; |
|
pos = klv.next_klv - klv.length; |
|
PRINT_KEY(s, "read packet", klv.key); |
|
av_log(s, AV_LOG_TRACE, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset); |
|
if (mxf_match_uid(klv.key, mxf_encrypted_triplet_key, sizeof(mxf_encrypted_triplet_key))) { |
|
ret = mxf_decrypt_triplet(s, pkt, &klv); |
|
if (ret < 0) { |
|
av_log(s, AV_LOG_ERROR, "invalid encoded triplet\n"); |
|
return ret; |
|
} |
|
return 0; |
|
} |
|
} else { |
|
klv = mxf->current_klv_data; |
|
max_data_size = klv.next_klv - pos; |
|
} |
|
if (IS_KLV_KEY(klv.key, mxf_essence_element_key) || |
|
IS_KLV_KEY(klv.key, mxf_canopus_essence_element_key) || |
|
IS_KLV_KEY(klv.key, mxf_avid_essence_element_key)) { |
|
int body_sid = find_body_sid_by_absolute_offset(mxf, klv.offset); |
|
int index = mxf_get_stream_index(s, &klv, body_sid); |
|
int64_t next_ofs; |
|
AVStream *st; |
|
MXFTrack *track; |
|
|
|
if (index < 0) { |
|
av_log(s, AV_LOG_ERROR, |
|
"error getting stream index %"PRIu32"\n", |
|
AV_RB32(klv.key + 12)); |
|
goto skip; |
|
} |
|
|
|
st = s->streams[index]; |
|
track = st->priv_data; |
|
|
|
if (s->streams[index]->discard == AVDISCARD_ALL) |
|
goto skip; |
|
|
|
next_ofs = mxf_set_current_edit_unit(mxf, st, pos, 1); |
|
|
|
if (track->wrapping != FrameWrapped) { |
|
int64_t size; |
|
|
|
if (next_ofs <= 0) { |
|
// If we have no way to packetize the data, then return it in chunks... |
|
if (klv.next_klv - klv.length == pos && max_data_size > MXF_MAX_CHUNK_SIZE) { |
|
ffstream(st)->need_parsing = AVSTREAM_PARSE_FULL; |
|
avpriv_request_sample(s, "Huge KLV without proper index in non-frame wrapped essence"); |
|
} |
|
size = FFMIN(max_data_size, MXF_MAX_CHUNK_SIZE); |
|
} else { |
|
if ((size = next_ofs - pos) <= 0) { |
|
av_log(s, AV_LOG_ERROR, "bad size: %"PRId64"\n", size); |
|
mxf->current_klv_data = (KLVPacket){{0}}; |
|
return AVERROR_INVALIDDATA; |
|
} |
|
// We must not overread, because the next edit unit might be in another KLV |
|
if (size > max_data_size) |
|
size = max_data_size; |
|
} |
|
|
|
mxf->current_klv_data = klv; |
|
klv.offset = pos; |
|
klv.length = size; |
|
klv.next_klv = klv.offset + klv.length; |
|
} |
|
|
|
/* check for 8 channels AES3 element */ |
|
if (klv.key[12] == 0x06 && klv.key[13] == 0x01 && klv.key[14] == 0x10) { |
|
ret = mxf_get_d10_aes3_packet(s->pb, s->streams[index], |
|
pkt, klv.length); |
|
if (ret < 0) { |
|
av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n"); |
|
mxf->current_klv_data = (KLVPacket){{0}}; |
|
return ret; |
|
} |
|
} else if (mxf->eia608_extract && |
|
s->streams[index]->codecpar->codec_id == AV_CODEC_ID_EIA_608) { |
|
ret = mxf_get_eia608_packet(s, s->streams[index], pkt, klv.length); |
|
if (ret < 0) { |
|
mxf->current_klv_data = (KLVPacket){{0}}; |
|
return ret; |
|
} |
|
} else { |
|
ret = av_get_packet(s->pb, pkt, klv.length); |
|
if (ret < 0) { |
|
mxf->current_klv_data = (KLVPacket){{0}}; |
|
return ret; |
|
} |
|
} |
|
pkt->stream_index = index; |
|
pkt->pos = klv.offset; |
|
|
|
ret = mxf_set_pts(mxf, st, pkt); |
|
if (ret < 0) { |
|
mxf->current_klv_data = (KLVPacket){{0}}; |
|
return ret; |
|
} |
|
|
|
/* seek for truncated packets */ |
|
avio_seek(s->pb, klv.next_klv, SEEK_SET); |
|
|
|
return 0; |
|
} else { |
|
skip: |
|
avio_skip(s->pb, max_data_size); |
|
mxf->current_klv_data = (KLVPacket){{0}}; |
|
} |
|
} |
|
return avio_feof(s->pb) ? AVERROR_EOF : ret; |
|
} |
|
|
|
static int mxf_read_close(AVFormatContext *s) |
|
{ |
|
MXFContext *mxf = s->priv_data; |
|
int i; |
|
|
|
av_freep(&mxf->packages_refs); |
|
av_freep(&mxf->essence_container_data_refs); |
|
|
|
for (i = 0; i < s->nb_streams; i++) |
|
s->streams[i]->priv_data = NULL; |
|
|
|
for (int type = 0; type < FF_ARRAY_ELEMS(mxf->metadata_set_groups); type++) { |
|
MXFMetadataSetGroup *mg = &mxf->metadata_set_groups[type]; |
|
for (i = 0; i < mg->metadata_sets_count; i++) |
|
mxf_free_metadataset(mg->metadata_sets + i, type); |
|
mg->metadata_sets_count = 0; |
|
av_freep(&mg->metadata_sets); |
|
} |
|
av_freep(&mxf->partitions); |
|
av_freep(&mxf->aesc); |
|
av_freep(&mxf->local_tags); |
|
|
|
if (mxf->index_tables) { |
|
for (i = 0; i < mxf->nb_index_tables; i++) { |
|
av_freep(&mxf->index_tables[i].segments); |
|
av_freep(&mxf->index_tables[i].ptses); |
|
av_freep(&mxf->index_tables[i].fake_index); |
|
av_freep(&mxf->index_tables[i].offsets); |
|
} |
|
} |
|
av_freep(&mxf->index_tables); |
|
|
|
return 0; |
|
} |
|
|
|
static int mxf_probe(const AVProbeData *p) { |
|
const uint8_t *bufp = p->buf; |
|
const uint8_t *end = p->buf + FFMIN(p->buf_size, RUN_IN_MAX + 1 + sizeof(mxf_header_partition_pack_key)); |
|
|
|
if (p->buf_size < sizeof(mxf_header_partition_pack_key)) |
|
return 0; |
|
|
|
/* Must skip Run-In Sequence and search for MXF header partition pack key SMPTE 377M 5.5 */ |
|
end -= sizeof(mxf_header_partition_pack_key); |
|
|
|
for (; bufp < end;) { |
|
if (!((bufp[13] - 1) & 0xF2)){ |
|
if (AV_RN32(bufp ) == AV_RN32(mxf_header_partition_pack_key ) && |
|
AV_RN32(bufp+ 4) == AV_RN32(mxf_header_partition_pack_key+ 4) && |
|
AV_RN32(bufp+ 8) == AV_RN32(mxf_header_partition_pack_key+ 8) && |
|
AV_RN16(bufp+12) == AV_RN16(mxf_header_partition_pack_key+12)) |
|
return bufp == p->buf ? AVPROBE_SCORE_MAX : AVPROBE_SCORE_MAX - 1; |
|
bufp ++; |
|
} else |
|
bufp += 10; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* rudimentary byte seek */ |
|
/* XXX: use MXF Index */ |
|
static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags) |
|
{ |
|
AVStream *st = s->streams[stream_index]; |
|
int64_t seconds; |
|
MXFContext* mxf = s->priv_data; |
|
int64_t seekpos; |
|
int i, ret; |
|
MXFIndexTable *t; |
|
MXFTrack *source_track = st->priv_data; |
|
|
|
if (!source_track) |
|
return 0; |
|
|
|
/* if audio then truncate sample_time to EditRate */ |
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) |
|
sample_time = av_rescale_q(sample_time, st->time_base, |
|
av_inv_q(source_track->edit_rate)); |
|
|
|
if (mxf->nb_index_tables <= 0) { |
|
if (!s->bit_rate) |
|
return AVERROR_INVALIDDATA; |
|
if (sample_time < 0) |
|
sample_time = 0; |
|
seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den); |
|
|
|
seekpos = avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET); |
|
if (seekpos < 0) |
|
return seekpos; |
|
|
|
avpriv_update_cur_dts(s, st, sample_time); |
|
mxf->current_klv_data = (KLVPacket){{0}}; |
|
} else { |
|
MXFPartition *partition; |
|
|
|
t = &mxf->index_tables[0]; |
|
if (t->index_sid != source_track->index_sid) { |
|
/* If the first index table does not belong to the stream, then find a stream which does belong to the index table */ |
|
for (i = 0; i < s->nb_streams; i++) { |
|
MXFTrack *new_source_track = s->streams[i]->priv_data; |
|
if (new_source_track && new_source_track->index_sid == t->index_sid) { |
|
sample_time = av_rescale_q(sample_time, new_source_track->edit_rate, source_track->edit_rate); |
|
source_track = new_source_track; |
|
st = s->streams[i]; |
|
break; |
|
} |
|
} |
|
if (i == s->nb_streams) |
|
return AVERROR_INVALIDDATA; |
|
} |
|
|
|
/* clamp above zero, else ff_index_search_timestamp() returns negative |
|
* this also means we allow seeking before the start */ |
|
sample_time = FFMAX(sample_time, 0); |
|
|
|
if (t->fake_index) { |
|
/* The first frames may not be keyframes in presentation order, so |
|
* we have to advance the target to be able to find the first |
|
* keyframe backwards... */ |
|
if (!(flags & AVSEEK_FLAG_ANY) && |
|
(flags & AVSEEK_FLAG_BACKWARD) && |
|
t->ptses[0] != AV_NOPTS_VALUE && |
|
sample_time < t->ptses[0] && |
|
(t->fake_index[t->ptses[0]].flags & AVINDEX_KEYFRAME)) |
|
sample_time = t->ptses[0]; |
|
|
|
/* behave as if we have a proper index */ |
|
if ((sample_time = ff_index_search_timestamp(t->fake_index, t->nb_ptses, sample_time, flags)) < 0) |
|
return sample_time; |
|
/* get the stored order index from the display order index */ |
|
sample_time += t->offsets[sample_time]; |
|
} else { |
|
/* no IndexEntryArray (one or more CBR segments) |
|
* make sure we don't seek past the end */ |
|
sample_time = FFMIN(sample_time, source_track->original_duration - 1); |
|
} |
|
|
|
if (source_track->wrapping == UnknownWrapped) |
|
av_log(mxf->fc, AV_LOG_WARNING, "attempted seek in an UnknownWrapped essence\n"); |
|
|
|
if ((ret = mxf_edit_unit_absolute_offset(mxf, t, sample_time, source_track->edit_rate, &sample_time, &seekpos, &partition, 1)) < 0) |
|
return ret; |
|
|
|
avpriv_update_cur_dts(s, st, sample_time); |
|
if (source_track->wrapping == ClipWrapped) { |
|
KLVPacket klv = partition->first_essence_klv; |
|
if (seekpos < klv.next_klv - klv.length || seekpos >= klv.next_klv) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "attempted seek out of clip wrapped KLV\n"); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
mxf->current_klv_data = klv; |
|
} else { |
|
mxf->current_klv_data = (KLVPacket){{0}}; |
|
} |
|
avio_seek(s->pb, seekpos, SEEK_SET); |
|
} |
|
|
|
// Update all tracks sample count |
|
for (i = 0; i < s->nb_streams; i++) { |
|
AVStream *cur_st = s->streams[i]; |
|
MXFTrack *cur_track = cur_st->priv_data; |
|
if (cur_track) { |
|
int64_t track_edit_unit = sample_time; |
|
if (st != cur_st) |
|
mxf_get_next_track_edit_unit(mxf, cur_track, seekpos, &track_edit_unit); |
|
cur_track->sample_count = mxf_compute_sample_count(mxf, cur_st, track_edit_unit); |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
static const AVOption options[] = { |
|
{ "eia608_extract", "extract eia 608 captions from s436m track", |
|
offsetof(MXFContext, eia608_extract), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, |
|
AV_OPT_FLAG_DECODING_PARAM }, |
|
{ NULL }, |
|
}; |
|
|
|
static const AVClass demuxer_class = { |
|
.class_name = "mxf", |
|
.item_name = av_default_item_name, |
|
.option = options, |
|
.version = LIBAVUTIL_VERSION_INT, |
|
.category = AV_CLASS_CATEGORY_DEMUXER, |
|
}; |
|
|
|
const AVInputFormat ff_mxf_demuxer = { |
|
.name = "mxf", |
|
.long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"), |
|
.flags = AVFMT_SEEK_TO_PTS, |
|
.priv_data_size = sizeof(MXFContext), |
|
.flags_internal = FF_FMT_INIT_CLEANUP, |
|
.read_probe = mxf_probe, |
|
.read_header = mxf_read_header, |
|
.read_packet = mxf_read_packet, |
|
.read_close = mxf_read_close, |
|
.read_seek = mxf_read_seek, |
|
.priv_class = &demuxer_class, |
|
};
|
|
|