123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175 |
- /*
- * 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"
- #include "riff.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 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;
- 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;
- #endif /* AVFORMAT_ASF_H */
|