mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
236 lines
9.1 KiB
236 lines
9.1 KiB
/* |
|
* Copyright (c) 2000, 2001 Fabrice Bellard |
|
* |
|
* This file is part of FFmpeg. |
|
* |
|
* FFmpeg is free software; you can redistribute it and/or |
|
* modify it under the terms of the GNU Lesser General Public |
|
* License as published by the Free Software Foundation; either |
|
* version 2.1 of the License, or (at your option) any later version. |
|
* |
|
* FFmpeg is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
* Lesser General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU Lesser General Public |
|
* License along with FFmpeg; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#ifndef AVFORMAT_ASF_H |
|
#define AVFORMAT_ASF_H |
|
|
|
#include <stdint.h> |
|
#include "avformat.h" |
|
#include "metadata.h" |
|
|
|
#define PACKET_SIZE 3200 |
|
|
|
typedef struct { |
|
int num; |
|
unsigned char seq; |
|
/* use for reading */ |
|
AVPacket pkt; |
|
int frag_offset; |
|
int timestamp; |
|
int64_t duration; |
|
|
|
int ds_span; /* descrambling */ |
|
int ds_packet_size; |
|
int ds_chunk_size; |
|
|
|
int64_t packet_pos; |
|
|
|
uint16_t stream_language_index; |
|
|
|
} ASFStream; |
|
|
|
typedef uint8_t ff_asf_guid[16]; |
|
|
|
typedef struct { |
|
ff_asf_guid guid; ///< generated by client computer |
|
uint64_t file_size; /**< in bytes |
|
* invalid if broadcasting */ |
|
uint64_t create_time; /**< time of creation, in 100-nanosecond units since 1.1.1601 |
|
* invalid if broadcasting */ |
|
uint64_t play_time; /**< play time, in 100-nanosecond units |
|
* invalid if broadcasting */ |
|
uint64_t send_time; /**< time to send file, in 100-nanosecond units |
|
* invalid if broadcasting (could be ignored) */ |
|
uint32_t preroll; /**< timestamp of the first packet, in milliseconds |
|
* if nonzero - subtract from time */ |
|
uint32_t ignore; ///< preroll is 64bit - but let's just ignore it |
|
uint32_t flags; /**< 0x01 - broadcast |
|
* 0x02 - seekable |
|
* rest is reserved should be 0 */ |
|
uint32_t min_pktsize; /**< size of a data packet |
|
* invalid if broadcasting */ |
|
uint32_t max_pktsize; /**< shall be the same as for min_pktsize |
|
* invalid if broadcasting */ |
|
uint32_t max_bitrate; /**< bandwidth of stream in bps |
|
* should be the sum of bitrates of the |
|
* individual media streams */ |
|
} ASFMainHeader; |
|
|
|
|
|
typedef struct { |
|
uint32_t packet_number; |
|
uint16_t packet_count; |
|
} ASFIndex; |
|
|
|
|
|
typedef struct { |
|
uint32_t seqno; |
|
int is_streamed; |
|
int asfid2avid[128]; ///< conversion table from asf ID 2 AVStream ID |
|
ASFStream streams[128]; ///< it's max number and it's not that big |
|
uint32_t stream_bitrates[128]; ///< max number of streams, bitrate for each (for streaming) |
|
char stream_languages[128][6]; ///< max number of streams, language for each (RFC1766, e.g. en-US) |
|
/* non streamed additonnal info */ |
|
uint64_t nb_packets; ///< how many packets are there in the file, invalid if broadcasting |
|
int64_t duration; ///< in 100ns units |
|
/* packet filling */ |
|
unsigned char multi_payloads_present; |
|
int packet_size_left; |
|
int packet_timestamp_start; |
|
int packet_timestamp_end; |
|
unsigned int packet_nb_payloads; |
|
int packet_nb_frames; |
|
uint8_t packet_buf[PACKET_SIZE]; |
|
ByteIOContext pb; |
|
/* only for reading */ |
|
uint64_t data_offset; ///< beginning of the first data packet |
|
uint64_t data_object_offset; ///< data object offset (excl. GUID & size) |
|
uint64_t data_object_size; ///< size of the data object |
|
int index_read; |
|
|
|
ASFMainHeader hdr; |
|
|
|
int packet_flags; |
|
int packet_property; |
|
int packet_timestamp; |
|
int packet_segsizetype; |
|
int packet_segments; |
|
int packet_seq; |
|
int packet_replic_size; |
|
int packet_key_frame; |
|
int packet_padsize; |
|
unsigned int packet_frag_offset; |
|
unsigned int packet_frag_size; |
|
int64_t packet_frag_timestamp; |
|
int packet_multi_size; |
|
int packet_obj_size; |
|
int packet_time_delta; |
|
int packet_time_start; |
|
int64_t packet_pos; |
|
|
|
int stream_index; |
|
|
|
|
|
int64_t last_indexed_pts; |
|
ASFIndex* index_ptr; |
|
uint32_t nb_index_count; |
|
uint32_t nb_index_memory_alloc; |
|
uint16_t maximum_packet; |
|
|
|
ASFStream* asf_st; ///< currently decoded stream |
|
} ASFContext; |
|
|
|
extern const ff_asf_guid ff_asf_header; |
|
extern const ff_asf_guid ff_asf_file_header; |
|
extern const ff_asf_guid ff_asf_stream_header; |
|
extern const ff_asf_guid ff_asf_ext_stream_header; |
|
extern const ff_asf_guid ff_asf_audio_stream; |
|
extern const ff_asf_guid ff_asf_audio_conceal_none; |
|
extern const ff_asf_guid ff_asf_audio_conceal_spread; |
|
extern const ff_asf_guid ff_asf_video_stream; |
|
extern const ff_asf_guid ff_asf_jfif_media; |
|
extern const ff_asf_guid ff_asf_video_conceal_none; |
|
extern const ff_asf_guid ff_asf_command_stream; |
|
extern const ff_asf_guid ff_asf_comment_header; |
|
extern const ff_asf_guid ff_asf_codec_comment_header; |
|
extern const ff_asf_guid ff_asf_codec_comment1_header; |
|
extern const ff_asf_guid ff_asf_data_header; |
|
extern const ff_asf_guid ff_asf_head1_guid; |
|
extern const ff_asf_guid ff_asf_head2_guid; |
|
extern const ff_asf_guid ff_asf_extended_content_header; |
|
extern const ff_asf_guid ff_asf_simple_index_header; |
|
extern const ff_asf_guid ff_asf_ext_stream_embed_stream_header; |
|
extern const ff_asf_guid ff_asf_ext_stream_audio_stream; |
|
extern const ff_asf_guid ff_asf_metadata_header; |
|
extern const ff_asf_guid ff_asf_marker_header; |
|
extern const ff_asf_guid ff_asf_my_guid; |
|
extern const ff_asf_guid ff_asf_language_guid; |
|
extern const ff_asf_guid ff_asf_content_encryption; |
|
extern const ff_asf_guid ff_asf_ext_content_encryption; |
|
extern const ff_asf_guid ff_asf_digital_signature; |
|
|
|
extern const AVMetadataConv ff_asf_metadata_conv[]; |
|
|
|
#define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000 |
|
|
|
|
|
// ASF data packet structure |
|
// ========================= |
|
// |
|
// |
|
// ----------------------------------- |
|
// | Error Correction Data | Optional |
|
// ----------------------------------- |
|
// | Payload Parsing Information (PPI) | |
|
// ----------------------------------- |
|
// | Payload Data | |
|
// ----------------------------------- |
|
// | Padding Data | |
|
// ----------------------------------- |
|
|
|
|
|
// PPI_FLAG - Payload parsing information flags |
|
#define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1 |
|
|
|
#define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE 0x02 //0000 0010 |
|
#define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD 0x04 //0000 0100 |
|
#define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110 |
|
#define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE 0x06 //0000 0110 |
|
|
|
#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE 0x08 //0000 1000 |
|
#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD 0x10 //0001 0000 |
|
#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000 |
|
#define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE 0x18 //0001 1000 |
|
|
|
#define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE 0x20 //0010 0000 |
|
#define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD 0x40 //0100 0000 |
|
#define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000 |
|
#define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE 0x60 //0110 0000 |
|
|
|
// PL_FLAG - Payload flags |
|
#define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE 0x01 //0000 0001 |
|
#define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD 0x02 //0000 0010 |
|
#define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD 0x03 //0000 0011 |
|
#define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE 0x03 //0000 0011 |
|
|
|
#define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE 0x04 //0000 0100 |
|
#define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD 0x08 //0000 1000 |
|
#define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100 |
|
#define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE 0x0c //0000 1100 |
|
|
|
#define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE 0x10 //0001 0000 |
|
#define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD 0x20 //0010 0000 |
|
#define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000 |
|
#define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE 0x30 //0011 0000 |
|
|
|
#define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000 |
|
#define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE 0xc0 //1100 0000 |
|
|
|
#define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000 |
|
#define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD 0x80 //1000 0000 |
|
#define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE 0xc0 //1100 0000 |
|
|
|
#define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000 |
|
|
|
extern AVInputFormat ff_asf_demuxer; |
|
int ff_guidcmp(const void *g1, const void *g2); |
|
void ff_get_guid(ByteIOContext *s, ff_asf_guid *g); |
|
|
|
#endif /* AVFORMAT_ASF_H */
|
|
|