asf.h 7.1 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175
  1. /*
  2. * Copyright (c) 2000, 2001 Fabrice Bellard
  3. *
  4. * This file is part of FFmpeg.
  5. *
  6. * FFmpeg is free software; you can redistribute it and/or
  7. * modify it under the terms of the GNU Lesser General Public
  8. * License as published by the Free Software Foundation; either
  9. * version 2.1 of the License, or (at your option) any later version.
  10. *
  11. * FFmpeg is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14. * Lesser General Public License for more details.
  15. *
  16. * You should have received a copy of the GNU Lesser General Public
  17. * License along with FFmpeg; if not, write to the Free Software
  18. * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19. */
  20. #ifndef AVFORMAT_ASF_H
  21. #define AVFORMAT_ASF_H
  22. #include <stdint.h>
  23. #include "avformat.h"
  24. #include "metadata.h"
  25. #include "riff.h"
  26. #define PACKET_SIZE 3200
  27. typedef struct {
  28. int num;
  29. unsigned char seq;
  30. /* use for reading */
  31. AVPacket pkt;
  32. int frag_offset;
  33. int timestamp;
  34. int64_t duration;
  35. int ds_span; /* descrambling */
  36. int ds_packet_size;
  37. int ds_chunk_size;
  38. int64_t packet_pos;
  39. uint16_t stream_language_index;
  40. } ASFStream;
  41. typedef struct {
  42. ff_asf_guid guid; ///< generated by client computer
  43. uint64_t file_size; /**< in bytes
  44. * invalid if broadcasting */
  45. uint64_t create_time; /**< time of creation, in 100-nanosecond units since 1.1.1601
  46. * invalid if broadcasting */
  47. uint64_t play_time; /**< play time, in 100-nanosecond units
  48. * invalid if broadcasting */
  49. uint64_t send_time; /**< time to send file, in 100-nanosecond units
  50. * invalid if broadcasting (could be ignored) */
  51. uint32_t preroll; /**< timestamp of the first packet, in milliseconds
  52. * if nonzero - subtract from time */
  53. uint32_t ignore; ///< preroll is 64bit - but let's just ignore it
  54. uint32_t flags; /**< 0x01 - broadcast
  55. * 0x02 - seekable
  56. * rest is reserved should be 0 */
  57. uint32_t min_pktsize; /**< size of a data packet
  58. * invalid if broadcasting */
  59. uint32_t max_pktsize; /**< shall be the same as for min_pktsize
  60. * invalid if broadcasting */
  61. uint32_t max_bitrate; /**< bandwidth of stream in bps
  62. * should be the sum of bitrates of the
  63. * individual media streams */
  64. } ASFMainHeader;
  65. typedef struct {
  66. uint32_t packet_number;
  67. uint16_t packet_count;
  68. } ASFIndex;
  69. extern const ff_asf_guid ff_asf_header;
  70. extern const ff_asf_guid ff_asf_file_header;
  71. extern const ff_asf_guid ff_asf_stream_header;
  72. extern const ff_asf_guid ff_asf_ext_stream_header;
  73. extern const ff_asf_guid ff_asf_audio_stream;
  74. extern const ff_asf_guid ff_asf_audio_conceal_none;
  75. extern const ff_asf_guid ff_asf_audio_conceal_spread;
  76. extern const ff_asf_guid ff_asf_video_stream;
  77. extern const ff_asf_guid ff_asf_jfif_media;
  78. extern const ff_asf_guid ff_asf_video_conceal_none;
  79. extern const ff_asf_guid ff_asf_command_stream;
  80. extern const ff_asf_guid ff_asf_comment_header;
  81. extern const ff_asf_guid ff_asf_codec_comment_header;
  82. extern const ff_asf_guid ff_asf_codec_comment1_header;
  83. extern const ff_asf_guid ff_asf_data_header;
  84. extern const ff_asf_guid ff_asf_head1_guid;
  85. extern const ff_asf_guid ff_asf_head2_guid;
  86. extern const ff_asf_guid ff_asf_extended_content_header;
  87. extern const ff_asf_guid ff_asf_simple_index_header;
  88. extern const ff_asf_guid ff_asf_ext_stream_embed_stream_header;
  89. extern const ff_asf_guid ff_asf_ext_stream_audio_stream;
  90. extern const ff_asf_guid ff_asf_metadata_header;
  91. extern const ff_asf_guid ff_asf_marker_header;
  92. extern const ff_asf_guid ff_asf_my_guid;
  93. extern const ff_asf_guid ff_asf_language_guid;
  94. extern const ff_asf_guid ff_asf_content_encryption;
  95. extern const ff_asf_guid ff_asf_ext_content_encryption;
  96. extern const ff_asf_guid ff_asf_digital_signature;
  97. extern const AVMetadataConv ff_asf_metadata_conv[];
  98. #define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000
  99. // ASF data packet structure
  100. // =========================
  101. //
  102. //
  103. // -----------------------------------
  104. // | Error Correction Data | Optional
  105. // -----------------------------------
  106. // | Payload Parsing Information (PPI) |
  107. // -----------------------------------
  108. // | Payload Data |
  109. // -----------------------------------
  110. // | Padding Data |
  111. // -----------------------------------
  112. // PPI_FLAG - Payload parsing information flags
  113. #define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1
  114. #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE 0x02 //0000 0010
  115. #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD 0x04 //0000 0100
  116. #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110
  117. #define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE 0x06 //0000 0110
  118. #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE 0x08 //0000 1000
  119. #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD 0x10 //0001 0000
  120. #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000
  121. #define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE 0x18 //0001 1000
  122. #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE 0x20 //0010 0000
  123. #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD 0x40 //0100 0000
  124. #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000
  125. #define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE 0x60 //0110 0000
  126. // PL_FLAG - Payload flags
  127. #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE 0x01 //0000 0001
  128. #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD 0x02 //0000 0010
  129. #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD 0x03 //0000 0011
  130. #define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE 0x03 //0000 0011
  131. #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE 0x04 //0000 0100
  132. #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD 0x08 //0000 1000
  133. #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100
  134. #define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE 0x0c //0000 1100
  135. #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE 0x10 //0001 0000
  136. #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD 0x20 //0010 0000
  137. #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000
  138. #define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE 0x30 //0011 0000
  139. #define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
  140. #define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE 0xc0 //1100 0000
  141. #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
  142. #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD 0x80 //1000 0000
  143. #define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE 0xc0 //1100 0000
  144. #define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000
  145. extern AVInputFormat ff_asf_demuxer;
  146. #endif /* AVFORMAT_ASF_H */