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973 lines
38 KiB
973 lines
38 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 library 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 of the License, or (at your option) any later version. |
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* |
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* This library 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 this library; 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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* |
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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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//#define DEBUG |
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|
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#include "avformat.h" |
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|
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typedef uint8_t UID[16]; |
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|
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enum MXFMetadataSetType { |
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MaterialPackage, |
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SourcePackage, |
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SourceClip, |
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TimecodeComponent, |
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Sequence, |
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MultipleDescriptor, |
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Descriptor, |
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Track, |
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EssenceContainerData, |
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}; |
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|
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typedef struct MXFStructuralComponent { |
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UID uid; |
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enum MXFMetadataSetType type; |
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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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|
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typedef struct MXFSequence { |
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UID uid; |
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enum MXFMetadataSetType type; |
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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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} MXFSequence; |
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|
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typedef struct MXFTrack { |
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UID uid; |
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enum MXFMetadataSetType type; |
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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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uint8_t track_number[4]; |
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AVRational edit_rate; |
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} MXFTrack; |
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|
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typedef struct MXFDescriptor { |
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UID uid; |
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enum MXFMetadataSetType type; |
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UID essence_container_ul; |
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UID essence_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; |
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int channels; |
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int bits_per_sample; |
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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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} MXFDescriptor; |
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|
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typedef struct MXFPackage { |
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UID uid; |
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enum MXFMetadataSetType type; |
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UID package_uid; |
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UID *tracks_refs; |
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int tracks_count; |
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MXFDescriptor *descriptor; /* only one */ |
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UID descriptor_ref; |
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} MXFPackage; |
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|
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typedef struct MXFEssenceContainerData { |
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UID uid; |
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enum MXFMetadataSetType type; |
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UID linked_package_uid; |
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} MXFEssenceContainerData; |
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|
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typedef struct { |
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UID uid; |
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enum MXFMetadataSetType type; |
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} MXFMetadataSet; |
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|
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typedef struct MXFContext { |
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UID *packages_refs; |
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int packages_count; |
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UID *essence_container_data_sets_refs; |
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int essence_container_data_sets_count; |
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UID *essence_containers_uls; /* Universal Labels SMPTE RP224 */ |
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int essence_containers_uls_count; |
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UID operational_pattern_ul; |
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UID content_storage_uid; |
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MXFMetadataSet **metadata_sets; |
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int metadata_sets_count; |
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AVFormatContext *fc; |
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} MXFContext; |
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|
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typedef struct KLVPacket { |
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UID key; |
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offset_t offset; |
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uint64_t length; |
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} KLVPacket; |
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|
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enum MXFWrappingScheme { |
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Frame, |
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Clip, |
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}; |
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|
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typedef struct MXFCodecUL { |
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UID uid; |
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enum CodecID id; |
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enum MXFWrappingScheme wrapping; |
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} MXFCodecUL; |
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|
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typedef struct MXFMetadataReadTableEntry { |
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const UID key; |
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int (*read)(MXFContext *mxf, KLVPacket *klv); |
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} MXFMetadataReadTableEntry; |
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|
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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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#define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y))) |
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|
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#define PRINT_KEY(x) dprintf("%02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n", \ |
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(x)[0], (x)[1], (x)[2], (x)[3], (x)[4], (x)[5], (x)[6], (x)[7], (x)[8], (x)[9], (x)[10], (x)[11], (x)[12], (x)[13], (x)[14], (x)[15]) |
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static int64_t klv_decode_ber_length(ByteIOContext *pb) |
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{ |
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int64_t size = 0; |
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uint8_t length = get_byte(pb); |
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int type = length >> 7; |
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|
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if (type) { /* long form */ |
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int bytes_num = length & 0x7f; |
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/* SMPTE 379M 5.3.4 guarantee that bytes_num must not exceed 8 bytes */ |
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if (bytes_num > 8) |
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return -1; |
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while (bytes_num--) |
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size = size << 8 | get_byte(pb); |
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} else { |
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size = length & 0x7f; |
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} |
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return size; |
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} |
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|
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static int klv_read_packet(KLVPacket *klv, ByteIOContext *pb) |
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{ |
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klv->offset = url_ftell(pb); |
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get_buffer(pb, klv->key, 16); |
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klv->length = klv_decode_ber_length(pb); |
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return klv->length == -1 ? -1 : 0; |
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} |
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|
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static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv) |
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{ |
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int i; |
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|
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for (i = 0; i < s->nb_streams; i++) { |
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MXFTrack *track = s->streams[i]->priv_data; |
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/* SMPTE 379M 7.3 */ |
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if (!memcmp(klv->key + sizeof(mxf_essence_element_key), track->track_number, sizeof(track->track_number))) |
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return i; |
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} |
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return -1; |
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} |
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static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt) |
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{ |
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KLVPacket klv; |
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|
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while (!url_feof(&s->pb)) { |
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if (klv_read_packet(&klv, &s->pb) < 0) { |
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av_log(s, AV_LOG_ERROR, "error reading KLV packet\n"); |
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return -1; |
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} |
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#ifdef DEBUG |
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PRINT_KEY(klv.key); |
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#endif |
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if (IS_KLV_KEY(klv.key, mxf_essence_element_key)) { |
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av_get_packet(&s->pb, pkt, klv.length); |
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pkt->stream_index = mxf_get_stream_index(s, &klv); |
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return pkt->stream_index == -1 ? -1 : 0; |
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} else |
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url_fskip(&s->pb, klv.length); |
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} |
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return AVERROR_IO; |
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} |
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|
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static int mxf_add_metadata_set(MXFContext *mxf, void *metadata_set) |
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{ |
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mxf->metadata_sets = av_realloc(mxf->metadata_sets, (mxf->metadata_sets_count + 1) * sizeof(*mxf->metadata_sets)); |
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mxf->metadata_sets[mxf->metadata_sets_count] = metadata_set; |
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mxf->metadata_sets_count++; |
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return 0; |
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} |
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static int mxf_read_metadata_preface(MXFContext *mxf, KLVPacket *klv) |
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{ |
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ByteIOContext *pb = &mxf->fc->pb; |
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int bytes_read = 0; |
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|
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while (bytes_read < klv->length) { |
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int tag = get_be16(pb); |
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int size = get_be16(pb); /* SMPTE 336M Table 8 KLV specified length, 0x53 */ |
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|
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switch (tag) { |
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case 0x3B03: |
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get_buffer(pb, mxf->content_storage_uid, 16); |
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break; |
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case 0x3B09: |
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get_buffer(pb, mxf->operational_pattern_ul, 16); |
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break; |
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case 0x3B0A: |
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mxf->essence_containers_uls_count = get_be32(pb); |
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if (mxf->essence_containers_uls_count >= UINT_MAX / sizeof(UID)) |
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return -1; |
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mxf->essence_containers_uls = av_malloc(mxf->essence_containers_uls_count * sizeof(UID)); |
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url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ |
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get_buffer(pb, mxf->essence_containers_uls, mxf->essence_containers_uls_count * sizeof(UID)); |
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break; |
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default: |
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url_fskip(pb, size); |
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} |
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bytes_read += size + 4; |
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} |
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return 0; |
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} |
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static int mxf_read_metadata_content_storage(MXFContext *mxf, KLVPacket *klv) |
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{ |
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ByteIOContext *pb = &mxf->fc->pb; |
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int bytes_read = 0; |
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|
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while (bytes_read < klv->length) { |
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int tag = get_be16(pb); |
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int size = get_be16(pb); /* SMPTE 336M Table 8 KLV specified length, 0x53 */ |
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|
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dprintf("tag 0x%04X, size %d\n", tag, size); |
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switch (tag) { |
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case 0x1901: |
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mxf->packages_count = get_be32(pb); |
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if (mxf->packages_count >= UINT_MAX / sizeof(UID)) |
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return -1; |
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mxf->packages_refs = av_malloc(mxf->packages_count * sizeof(UID)); |
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url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ |
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get_buffer(pb, mxf->packages_refs, mxf->packages_count * sizeof(UID)); |
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break; |
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case 0x1902: |
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mxf->essence_container_data_sets_count = get_be32(pb); |
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if (mxf->essence_container_data_sets_count >= UINT_MAX / sizeof(UID)) |
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return -1; |
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mxf->essence_container_data_sets_refs = av_malloc(mxf->essence_container_data_sets_count * sizeof(UID)); |
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url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ |
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get_buffer(pb, mxf->essence_container_data_sets_refs, mxf->essence_container_data_sets_count * sizeof(UID)); |
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break; |
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default: |
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url_fskip(pb, size); |
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} |
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bytes_read += size + 4; |
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} |
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return 0; |
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} |
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static int mxf_read_metadata_source_clip(MXFContext *mxf, KLVPacket *klv) |
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{ |
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ByteIOContext *pb = &mxf->fc->pb; |
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MXFStructuralComponent *source_clip = av_mallocz(sizeof(*source_clip)); |
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int bytes_read = 0; |
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while (bytes_read < klv->length) { |
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int tag = get_be16(pb); |
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int size = get_be16(pb); /* SMPTE 336M Table 8 KLV specified length, 0x53 */ |
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dprintf("tag 0x%04X, size %d\n", tag, size); |
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switch (tag) { |
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case 0x3C0A: |
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get_buffer(pb, source_clip->uid, 16); |
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break; |
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case 0x0202: |
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source_clip->duration = get_be64(pb); |
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break; |
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case 0x1201: |
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source_clip->start_position = get_be64(pb); |
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break; |
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case 0x1101: |
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/* UMID, only get last 16 bytes */ |
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url_fskip(pb, 16); |
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get_buffer(pb, source_clip->source_package_uid, 16); |
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break; |
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case 0x1102: |
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source_clip->source_track_id = get_be32(pb); |
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break; |
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default: |
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url_fskip(pb, size); |
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} |
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bytes_read += size + 4; |
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} |
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source_clip->type = SourceClip; |
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return mxf_add_metadata_set(mxf, source_clip); |
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} |
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static int mxf_read_metadata_material_package(MXFContext *mxf, KLVPacket *klv) |
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{ |
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ByteIOContext *pb = &mxf->fc->pb; |
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MXFPackage *package = av_mallocz(sizeof(*package)); |
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int bytes_read = 0; |
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|
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while (bytes_read < klv->length) { |
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int tag = get_be16(pb); |
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int size = get_be16(pb); /* KLV specified by 0x53 */ |
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|
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switch (tag) { |
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case 0x3C0A: |
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get_buffer(pb, package->uid, 16); |
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break; |
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case 0x4403: |
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package->tracks_count = get_be32(pb); |
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if (package->tracks_count >= UINT_MAX / sizeof(UID)) |
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return -1; |
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package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID)); |
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url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ |
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get_buffer(pb, package->tracks_refs, package->tracks_count * sizeof(UID)); |
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break; |
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default: |
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url_fskip(pb, size); |
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} |
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bytes_read += size + 4; |
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} |
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package->type = MaterialPackage; |
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return mxf_add_metadata_set(mxf, package); |
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} |
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|
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static int mxf_read_metadata_track(MXFContext *mxf, KLVPacket *klv) |
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{ |
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ByteIOContext *pb = &mxf->fc->pb; |
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MXFTrack *track = av_mallocz(sizeof(*track)); |
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int bytes_read = 0; |
|
|
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while (bytes_read < klv->length) { |
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int tag = get_be16(pb); |
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int size = get_be16(pb); /* KLV specified by 0x53 */ |
|
|
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dprintf("tag 0x%04X, size %d\n", tag, size); |
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switch (tag) { |
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case 0x3C0A: |
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get_buffer(pb, track->uid, 16); |
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break; |
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case 0x4801: |
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track->track_id = get_be32(pb); |
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break; |
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case 0x4804: |
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get_buffer(pb, track->track_number, 4); |
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break; |
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case 0x4B01: |
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track->edit_rate.den = get_be32(pb); |
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track->edit_rate.num = get_be32(pb); |
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break; |
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case 0x4803: |
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get_buffer(pb, track->sequence_ref, 16); |
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break; |
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default: |
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url_fskip(pb, size); |
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} |
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bytes_read += size + 4; |
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} |
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track->type = Track; |
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return mxf_add_metadata_set(mxf, track); |
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} |
|
|
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static int mxf_read_metadata_sequence(MXFContext *mxf, KLVPacket *klv) |
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{ |
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ByteIOContext *pb = &mxf->fc->pb; |
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MXFSequence *sequence = av_mallocz(sizeof(*sequence)); |
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int bytes_read = 0; |
|
|
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while (bytes_read < klv->length) { |
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int tag = get_be16(pb); |
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int size = get_be16(pb); /* KLV specified by 0x53 */ |
|
|
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dprintf("tag 0x%04X, size %d\n", tag, size); |
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switch (tag) { |
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case 0x3C0A: |
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get_buffer(pb, sequence->uid, 16); |
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break; |
|
case 0x0202: |
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sequence->duration = get_be64(pb); |
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break; |
|
case 0x0201: |
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get_buffer(pb, sequence->data_definition_ul, 16); |
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break; |
|
case 0x1001: |
|
sequence->structural_components_count = get_be32(pb); |
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if (sequence->structural_components_count >= UINT_MAX / sizeof(UID)) |
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return -1; |
|
sequence->structural_components_refs = av_malloc(sequence->structural_components_count * sizeof(UID)); |
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url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ |
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get_buffer(pb, sequence->structural_components_refs, sequence->structural_components_count * sizeof(UID)); |
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break; |
|
default: |
|
url_fskip(pb, size); |
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} |
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bytes_read += size + 4; |
|
} |
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sequence->type = Sequence; |
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return mxf_add_metadata_set(mxf, sequence); |
|
} |
|
|
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static int mxf_read_metadata_source_package(MXFContext *mxf, KLVPacket *klv) |
|
{ |
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ByteIOContext *pb = &mxf->fc->pb; |
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MXFPackage *package = av_mallocz(sizeof(*package)); |
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int bytes_read = 0; |
|
|
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while (bytes_read < klv->length) { |
|
int tag = get_be16(pb); |
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int size = get_be16(pb); /* KLV specified by 0x53 */ |
|
|
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dprintf("tag 0x%04X, size %d\n", tag, size); |
|
switch (tag) { |
|
case 0x3C0A: |
|
get_buffer(pb, package->uid, 16); |
|
break; |
|
case 0x4403: |
|
package->tracks_count = get_be32(pb); |
|
if (package->tracks_count >= UINT_MAX / sizeof(UID)) |
|
return -1; |
|
package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID)); |
|
url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ |
|
get_buffer(pb, package->tracks_refs, package->tracks_count * sizeof(UID)); |
|
break; |
|
case 0x4401: |
|
/* UMID, only get last 16 bytes */ |
|
url_fskip(pb, 16); |
|
get_buffer(pb, package->package_uid, 16); |
|
break; |
|
case 0x4701: |
|
get_buffer(pb, package->descriptor_ref, 16); |
|
break; |
|
default: |
|
url_fskip(pb, size); |
|
} |
|
bytes_read += size + 4; |
|
} |
|
package->type = SourcePackage; |
|
return mxf_add_metadata_set(mxf, package); |
|
} |
|
|
|
static int mxf_read_metadata_multiple_descriptor(MXFContext *mxf, KLVPacket *klv) |
|
{ |
|
ByteIOContext *pb = &mxf->fc->pb; |
|
MXFDescriptor *descriptor = av_mallocz(sizeof(*descriptor)); |
|
int bytes_read = 0; |
|
|
|
while (bytes_read < klv->length) { |
|
int tag = get_be16(pb); |
|
int size = get_be16(pb); /* KLV specified by 0x53 */ |
|
|
|
dprintf("tag 0x%04X, size %d\n", tag, size); |
|
switch (tag) { |
|
case 0x3C0A: |
|
get_buffer(pb, descriptor->uid, 16); |
|
break; |
|
case 0x3F01: |
|
descriptor->sub_descriptors_count = get_be32(pb); |
|
if (descriptor->sub_descriptors_count >= UINT_MAX / sizeof(UID)) |
|
return -1; |
|
descriptor->sub_descriptors_refs = av_malloc(descriptor->sub_descriptors_count * sizeof(UID)); |
|
url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ |
|
get_buffer(pb, descriptor->sub_descriptors_refs, descriptor->sub_descriptors_count * sizeof(UID)); |
|
break; |
|
default: |
|
url_fskip(pb, size); |
|
} |
|
bytes_read += size + 4; |
|
} |
|
descriptor->type = MultipleDescriptor; |
|
return mxf_add_metadata_set(mxf, descriptor); |
|
} |
|
|
|
static void mxf_read_metadata_pixel_layout(ByteIOContext *pb, MXFDescriptor *descriptor) |
|
{ |
|
int code; |
|
|
|
do { |
|
code = get_byte(pb); |
|
dprintf("pixel layout: code 0x%x\n", code); |
|
switch (code) { |
|
case 0x52: /* R */ |
|
descriptor->bits_per_sample += get_byte(pb); |
|
break; |
|
case 0x47: /* G */ |
|
descriptor->bits_per_sample += get_byte(pb); |
|
break; |
|
case 0x42: /* B */ |
|
descriptor->bits_per_sample += get_byte(pb); |
|
break; |
|
default: |
|
get_byte(pb); |
|
} |
|
} while (code != 0); /* SMPTE 377M E.2.46 */ |
|
} |
|
|
|
static int mxf_read_metadata_generic_descriptor(MXFContext *mxf, KLVPacket *klv) |
|
{ |
|
ByteIOContext *pb = &mxf->fc->pb; |
|
MXFDescriptor *descriptor = av_mallocz(sizeof(*descriptor)); |
|
int bytes_read = 0; |
|
|
|
while (bytes_read < klv->length) { |
|
int tag = get_be16(pb); |
|
int size = get_be16(pb); /* KLV specified by 0x53 */ |
|
|
|
dprintf("tag 0x%04X, size %d\n", tag, size); |
|
switch (tag) { |
|
case 0x3C0A: |
|
get_buffer(pb, descriptor->uid, 16); |
|
break; |
|
case 0x3004: |
|
get_buffer(pb, descriptor->essence_container_ul, 16); |
|
break; |
|
case 0x3006: |
|
descriptor->linked_track_id = get_be32(pb); |
|
break; |
|
case 0x3201: /* PictureEssenceCoding */ |
|
get_buffer(pb, descriptor->essence_codec_ul, 16); |
|
break; |
|
case 0x3203: |
|
descriptor->width = get_be32(pb); |
|
break; |
|
case 0x3202: |
|
descriptor->height = get_be32(pb); |
|
break; |
|
case 0x320E: |
|
descriptor->aspect_ratio.num = get_be32(pb); |
|
descriptor->aspect_ratio.den = get_be32(pb); |
|
break; |
|
case 0x3D03: |
|
descriptor->sample_rate.num = get_be32(pb); |
|
descriptor->sample_rate.den = get_be32(pb); |
|
break; |
|
case 0x3D06: /* SoundEssenceCompression */ |
|
get_buffer(pb, descriptor->essence_codec_ul, 16); |
|
break; |
|
case 0x3D07: |
|
descriptor->channels = get_be32(pb); |
|
break; |
|
case 0x3D01: |
|
descriptor->bits_per_sample = get_be32(pb); |
|
break; |
|
case 0x3401: |
|
mxf_read_metadata_pixel_layout(pb, descriptor); |
|
break; |
|
case 0x8201: /* Private tag used by SONY C0023S01.mxf */ |
|
descriptor->extradata = av_malloc(size); |
|
descriptor->extradata_size = size; |
|
get_buffer(pb, descriptor->extradata, size); |
|
break; |
|
default: |
|
url_fskip(pb, size); |
|
} |
|
bytes_read += size + 4; |
|
} |
|
descriptor->type = Descriptor; |
|
return mxf_add_metadata_set(mxf, descriptor); |
|
} |
|
|
|
/* SMPTE RP224 http://www.smpte-ra.org/mdd/index.html */ |
|
static const UID picture_essence_track_ul = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x01,0x03,0x02,0x02,0x01,0x00,0x00,0x00 }; |
|
static const UID sound_essence_track_ul = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x01,0x03,0x02,0x02,0x02,0x00,0x00,0x00 }; |
|
|
|
static const MXFCodecUL mxf_codec_uls[] = { |
|
/* PictureEssenceCoding */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* 422P@ML I-Frame */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* 422P@HL Long GoP */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* MP@ML Long GoP */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* 422P@ML Long GoP */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* MP@HL Long GoP */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x20,0x02,0x03 }, CODEC_ID_MPEG4, Frame }, /* XDCAM proxy_pal030926.mxf */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x20,0x02,0x04 }, CODEC_ID_MPEG4, Frame }, /* XDCAM Proxy C0023S01.mxf */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 }, CODEC_ID_MPEG2VIDEO, Frame }, /* D-10 30Mbps PAL */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 }, CODEC_ID_MPEG2VIDEO, Frame }, /* D-10 50Mbps PAL */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 }, CODEC_ID_DVVIDEO, Frame }, /* DVCPRO50 PAL */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 }, CODEC_ID_DVVIDEO, Frame }, /* DVCPRO25 PAL */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x01,0x02,0x00 }, CODEC_ID_DVVIDEO, Frame }, /* DV25 IEC PAL */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 }, CODEC_ID_JPEG2000, Frame }, /* JPEG2000 Codestream */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x01,0x7F,0x00,0x00,0x00 }, CODEC_ID_RAWVIDEO, Frame }, /* Uncompressed */ |
|
/* SoundEssenceCompression */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 }, CODEC_ID_PCM_S16LE, Frame }, /* Uncompressed */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x7F,0x00,0x00,0x00 }, CODEC_ID_PCM_S16LE, Frame }, |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x07,0x04,0x02,0x02,0x01,0x7E,0x00,0x00,0x00 }, CODEC_ID_PCM_S16BE, Frame }, /* From Omneon MXF file */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x01,0x01,0x00 }, CODEC_ID_PCM_ALAW, Frame }, |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x04,0x04,0x02,0x02,0x02,0x03,0x01,0x01,0x00 }, CODEC_ID_PCM_ALAW, Frame }, /* XDCAM Proxy C0023S01.mxf */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x02,0x01,0x00 }, CODEC_ID_AC3, Frame }, |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x02,0x05,0x00 }, CODEC_ID_MP2, Frame }, /* MP2 or MP3 */ |
|
//{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x02,0x1C,0x00 }, CODEC_ID_DOLBY_E, Frame }, /* Dolby-E */ |
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, CODEC_ID_NONE, Frame }, |
|
}; |
|
|
|
static const MXFCodecUL mxf_picture_essence_container_uls[] = { |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, CODEC_ID_MPEG2VIDEO, Frame }, /* MPEG-ES Frame wrapped */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0xe0,0x02 }, CODEC_ID_MPEG2VIDEO, Clip }, /* MPEG-ES Clip wrapped, 0xe0 MPV stream id */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x04,0x61,0x07 }, CODEC_ID_MPEG2VIDEO, Clip }, /* MPEG-ES Custom wrapped, 0x61 ??? stream id */ |
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, CODEC_ID_NONE, Frame }, |
|
}; |
|
|
|
static const MXFCodecUL mxf_sound_essence_container_uls[] = { |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, CODEC_ID_PCM_S16LE, Frame }, /* BWF Frame wrapped */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 }, CODEC_ID_PCM_S16LE, Frame }, /* AES Frame wrapped */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x40,0x01 }, CODEC_ID_MP2, Frame }, /* MPEG-ES Frame wrapped, 0x40 ??? stream id */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0xc0,0x01 }, CODEC_ID_MP2, Frame }, /* MPEG-ES Frame wrapped, 0xc0 MPA stream id */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0xc0,0x02 }, CODEC_ID_MP2, Clip }, /* MPEG-ES Clip wrapped, 0xc0 MPA stream id */ |
|
//{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 }, CODEC_ID_PCM_AES3, Frame }, /* D-10 Mapping 30Mbps PAL Extended Template */ |
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, CODEC_ID_NONE, Frame }, |
|
}; |
|
|
|
static const MXFCodecUL *mxf_get_codec_ul(const MXFCodecUL *uls, UID *uid) |
|
{ |
|
while (uls->id != CODEC_ID_NONE) { |
|
if(!memcmp(uls->uid, *uid, 16)) |
|
break; |
|
uls++; |
|
} |
|
return uls; |
|
} |
|
|
|
static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref) |
|
{ |
|
int i; |
|
|
|
if (!strong_ref) |
|
return NULL; |
|
for (i = 0; i < mxf->metadata_sets_count; i++) { |
|
if (!memcmp(*strong_ref, mxf->metadata_sets[i]->uid, 16)) { |
|
return mxf->metadata_sets[i]; |
|
} |
|
} |
|
return NULL; |
|
} |
|
|
|
static int mxf_parse_structural_metadata(MXFContext *mxf) |
|
{ |
|
MXFPackage *material_package = NULL; |
|
MXFPackage *source_package = NULL; |
|
MXFPackage *temp_package = NULL; |
|
int i, j, k; |
|
|
|
dprintf("metadata sets count %d\n", mxf->metadata_sets_count); |
|
/* TODO: handle multiple material packages (OP3x) */ |
|
for (i = 0; i < mxf->packages_count; i++) { |
|
if (!(temp_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i]))) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve package strong ref\n"); |
|
return -1; |
|
} |
|
if (temp_package->type == MaterialPackage) { |
|
material_package = temp_package; |
|
break; |
|
} |
|
} |
|
if (!material_package) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "no material package found\n"); |
|
return -1; |
|
} |
|
|
|
for (i = 0; i < material_package->tracks_count; i++) { |
|
MXFTrack *material_track = NULL; |
|
MXFTrack *source_track = NULL; |
|
MXFTrack *temp_track = NULL; |
|
MXFDescriptor *descriptor = NULL; |
|
MXFStructuralComponent *component = NULL; |
|
const MXFCodecUL *codec_ul = NULL; |
|
const MXFCodecUL *container_ul = NULL; |
|
AVStream *st; |
|
|
|
if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i]))) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track strong ref\n"); |
|
continue; |
|
} |
|
|
|
if (!(material_track->sequence = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref))) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track sequence strong ref\n"); |
|
return -1; |
|
} |
|
|
|
/* TODO: handle multiple source clips */ |
|
for (j = 0; j < material_track->sequence->structural_components_count; j++) { |
|
/* TODO: handle timecode component */ |
|
component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j]); |
|
if (!component || component->type != SourceClip) |
|
continue; |
|
|
|
for (k = 0; k < mxf->packages_count; k++) { |
|
if (!(temp_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[k]))) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n"); |
|
return -1; |
|
} |
|
if (!memcmp(temp_package->package_uid, component->source_package_uid, 16)) { |
|
source_package = temp_package; |
|
break; |
|
} |
|
} |
|
if (!source_package) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source package found\n", material_track->track_id); |
|
break; |
|
} |
|
for (k = 0; k < source_package->tracks_count; k++) { |
|
if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k]))) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n"); |
|
return -1; |
|
} |
|
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; |
|
} |
|
} |
|
if (!source_track) |
|
continue; |
|
|
|
st = av_new_stream(mxf->fc, source_track->track_id); |
|
st->priv_data = source_track; |
|
st->duration = component->duration; |
|
if (st->duration == -1) |
|
st->duration = AV_NOPTS_VALUE; |
|
st->start_time = component->start_position; |
|
av_set_pts_info(st, 64, material_track->edit_rate.num, material_track->edit_rate.den); |
|
|
|
if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref))) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n"); |
|
return -1; |
|
} |
|
|
|
#ifdef DEBUG |
|
PRINT_KEY(source_track->sequence->data_definition_ul); |
|
#endif |
|
if (!memcmp(source_track->sequence->data_definition_ul, picture_essence_track_ul, 16)) |
|
st->codec->codec_type = CODEC_TYPE_VIDEO; |
|
else if (!memcmp(source_track->sequence->data_definition_ul, sound_essence_track_ul, 16)) |
|
st->codec->codec_type = CODEC_TYPE_AUDIO; |
|
else |
|
st->codec->codec_type = CODEC_TYPE_DATA; |
|
|
|
source_package->descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor_ref); |
|
if (source_package->descriptor) { |
|
if (source_package->descriptor->type == MultipleDescriptor) { |
|
for (j = 0; j < source_package->descriptor->sub_descriptors_count; j++) { |
|
MXFDescriptor *sub_descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor->sub_descriptors_refs[j]); |
|
|
|
if (!sub_descriptor) { |
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve sub descriptor strong ref\n"); |
|
continue; |
|
} |
|
if (sub_descriptor->linked_track_id == source_track->track_id) { |
|
descriptor = sub_descriptor; |
|
break; |
|
} |
|
} |
|
} else |
|
descriptor = source_package->descriptor; |
|
} |
|
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; |
|
} |
|
#ifdef DEBUG |
|
PRINT_KEY(descriptor->essence_codec_ul); |
|
PRINT_KEY(descriptor->essence_container_ul); |
|
#endif |
|
/* TODO: drop PictureEssenceCoding and SoundEssenceCompression, only check EssenceContainer */ |
|
codec_ul = mxf_get_codec_ul(mxf_codec_uls, &descriptor->essence_codec_ul); |
|
st->codec->codec_id = codec_ul->id; |
|
if (descriptor->extradata) { |
|
st->codec->extradata = descriptor->extradata; |
|
st->codec->extradata_size = descriptor->extradata_size; |
|
} |
|
if (st->codec->codec_type == CODEC_TYPE_VIDEO) { |
|
container_ul = mxf_get_codec_ul(mxf_picture_essence_container_uls, &descriptor->essence_container_ul); |
|
if (st->codec->codec_id == CODEC_ID_NONE) |
|
st->codec->codec_id = container_ul->id; |
|
st->codec->width = descriptor->width; |
|
st->codec->height = descriptor->height; |
|
st->codec->bits_per_sample = descriptor->bits_per_sample; /* Uncompressed */ |
|
} else if (st->codec->codec_type == CODEC_TYPE_AUDIO) { |
|
container_ul = mxf_get_codec_ul(mxf_sound_essence_container_uls, &descriptor->essence_container_ul); |
|
if (st->codec->codec_id == CODEC_ID_NONE) |
|
st->codec->codec_id = container_ul->id; |
|
st->codec->channels = descriptor->channels; |
|
st->codec->bits_per_sample = descriptor->bits_per_sample; |
|
st->codec->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den; |
|
/* TODO: implement CODEC_ID_RAWAUDIO */ |
|
if (st->codec->codec_id == CODEC_ID_PCM_S16LE) { |
|
if (descriptor->bits_per_sample == 24) |
|
st->codec->codec_id = CODEC_ID_PCM_S24LE; |
|
else if (descriptor->bits_per_sample == 32) |
|
st->codec->codec_id = CODEC_ID_PCM_S32LE; |
|
} else if (st->codec->codec_id == CODEC_ID_PCM_S16BE) { |
|
if (descriptor->bits_per_sample == 24) |
|
st->codec->codec_id = CODEC_ID_PCM_S24BE; |
|
else if (descriptor->bits_per_sample == 32) |
|
st->codec->codec_id = CODEC_ID_PCM_S32BE; |
|
} |
|
} |
|
if (container_ul && container_ul->wrapping == Clip) { |
|
dprintf("stream %d: clip wrapped essence\n", st->index); |
|
st->need_parsing = 1; |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = { |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x2F,0x00 }, mxf_read_metadata_preface }, |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_metadata_content_storage }, |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_metadata_source_package }, |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_metadata_material_package }, |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0F,0x00 }, mxf_read_metadata_sequence }, |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_metadata_source_clip }, |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_metadata_multiple_descriptor }, |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x42,0x00 }, mxf_read_metadata_generic_descriptor }, /* Generic Sound */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_metadata_generic_descriptor }, /* CDCI */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_metadata_generic_descriptor }, /* RGBA */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_metadata_generic_descriptor }, /* MPEG 2 Video */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_metadata_generic_descriptor }, /* Wave */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_metadata_generic_descriptor }, /* AES3 */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_metadata_track }, /* Static Track */ |
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_metadata_track }, /* Generic Track */ |
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL }, |
|
}; |
|
|
|
static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap) |
|
{ |
|
MXFContext *mxf = s->priv_data; |
|
KLVPacket klv; |
|
|
|
mxf->fc = s; |
|
while (!url_feof(&s->pb)) { |
|
const MXFMetadataReadTableEntry *function; |
|
|
|
if (klv_read_packet(&klv, &s->pb) < 0) { |
|
av_log(s, AV_LOG_ERROR, "error reading KLV packet\n"); |
|
return -1; |
|
} |
|
#ifdef DEBUG |
|
PRINT_KEY(klv.key); |
|
#endif |
|
if (IS_KLV_KEY(klv.key, mxf_essence_element_key)) { |
|
/* FIXME avoid seek */ |
|
url_fseek(&s->pb, klv.offset, SEEK_SET); |
|
break; |
|
} |
|
|
|
for (function = mxf_metadata_read_table; function->read; function++) { |
|
if (IS_KLV_KEY(klv.key, function->key)) { |
|
if (function->read(mxf, &klv) < 0) { |
|
av_log(s, AV_LOG_ERROR, "error reading header metadata\n"); |
|
return -1; |
|
} |
|
break; |
|
} |
|
} |
|
if (!function->read) |
|
url_fskip(&s->pb, klv.length); |
|
} |
|
return mxf_parse_structural_metadata(mxf); |
|
} |
|
|
|
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_sets_refs); |
|
av_freep(&mxf->essence_containers_uls); |
|
for (i = 0; i < mxf->metadata_sets_count; i++) { |
|
switch (mxf->metadata_sets[i]->type) { |
|
case MultipleDescriptor: |
|
av_freep(&((MXFDescriptor *)mxf->metadata_sets[i])->sub_descriptors_refs); |
|
break; |
|
case Sequence: |
|
av_freep(&((MXFSequence *)mxf->metadata_sets[i])->structural_components_refs); |
|
break; |
|
case SourcePackage: |
|
case MaterialPackage: |
|
av_freep(&((MXFPackage *)mxf->metadata_sets[i])->tracks_refs); |
|
break; |
|
default: |
|
break; |
|
} |
|
av_freep(&mxf->metadata_sets[i]); |
|
} |
|
av_freep(&mxf->metadata_sets); |
|
return 0; |
|
} |
|
|
|
static int mxf_probe(AVProbeData *p) { |
|
uint8_t *bufp = p->buf; |
|
uint8_t *end = p->buf + p->buf_size; |
|
|
|
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; bufp++) { |
|
if (IS_KLV_KEY(bufp, mxf_header_partition_pack_key)) |
|
return AVPROBE_SCORE_MAX; |
|
} |
|
return 0; |
|
} |
|
|
|
|
|
AVInputFormat mxf_demuxer = { |
|
"mxf", |
|
"MXF format", |
|
sizeof(MXFContext), |
|
mxf_probe, |
|
mxf_read_header, |
|
mxf_read_packet, |
|
mxf_read_close, |
|
NULL, |
|
};
|
|
|