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  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.  
  21. #ifndef AVFORMAT_ASF_H
  22. #define AVFORMAT_ASF_H
  23.  
  24. #include <stdint.h>
  25. #include "avformat.h"
  26. #include "metadata.h"
  27. #include "riff.h"
  28.  
  29. #define PACKET_SIZE 3200
  30.  
  31. typedef enum ASFDataType {
  32.     ASF_UNICODE    = 0,
  33.     ASF_BYTE_ARRAY = 1,
  34.     ASF_BOOL       = 2,
  35.     ASF_DWORD      = 3,
  36.     ASF_QWORD      = 4,
  37.     ASF_WORD       = 5,
  38.     ASF_GUID       = 6,
  39. }ASFDataType;
  40.  
  41. typedef struct ASFMainHeader {
  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.  
  66.  
  67. typedef struct ASFIndex {
  68.     uint32_t packet_number;
  69.     uint16_t packet_count;
  70.     uint64_t send_time;
  71.     uint64_t offset;
  72. } ASFIndex;
  73.  
  74. extern const ff_asf_guid ff_asf_header;
  75. extern const ff_asf_guid ff_asf_file_header;
  76. extern const ff_asf_guid ff_asf_stream_header;
  77. extern const ff_asf_guid ff_asf_ext_stream_header;
  78. extern const ff_asf_guid ff_asf_audio_stream;
  79. extern const ff_asf_guid ff_asf_audio_conceal_none;
  80. extern const ff_asf_guid ff_asf_audio_conceal_spread;
  81. extern const ff_asf_guid ff_asf_video_stream;
  82. extern const ff_asf_guid ff_asf_jfif_media;
  83. extern const ff_asf_guid ff_asf_video_conceal_none;
  84. extern const ff_asf_guid ff_asf_command_stream;
  85. extern const ff_asf_guid ff_asf_comment_header;
  86. extern const ff_asf_guid ff_asf_codec_comment_header;
  87. extern const ff_asf_guid ff_asf_codec_comment1_header;
  88. extern const ff_asf_guid ff_asf_data_header;
  89. extern const ff_asf_guid ff_asf_head1_guid;
  90. extern const ff_asf_guid ff_asf_head2_guid;
  91. extern const ff_asf_guid ff_asf_extended_content_header;
  92. extern const ff_asf_guid ff_asf_simple_index_header;
  93. extern const ff_asf_guid ff_asf_ext_stream_embed_stream_header;
  94. extern const ff_asf_guid ff_asf_ext_stream_audio_stream;
  95. extern const ff_asf_guid ff_asf_metadata_header;
  96. extern const ff_asf_guid ff_asf_metadata_library_header;
  97. extern const ff_asf_guid ff_asf_marker_header;
  98. extern const ff_asf_guid ff_asf_reserved_4;
  99. extern const ff_asf_guid ff_asf_my_guid;
  100. extern const ff_asf_guid ff_asf_language_guid;
  101. extern const ff_asf_guid ff_asf_content_encryption;
  102. extern const ff_asf_guid ff_asf_ext_content_encryption;
  103. extern const ff_asf_guid ff_asf_digital_signature;
  104.  
  105. extern const AVMetadataConv ff_asf_metadata_conv[];
  106.  
  107. #define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000
  108.  
  109.  
  110. //   ASF data packet structure
  111. //   =========================
  112. //
  113. //
  114. //  -----------------------------------
  115. // | Error Correction Data             |  Optional
  116. //  -----------------------------------
  117. // | Payload Parsing Information (PPI) |
  118. //  -----------------------------------
  119. // | Payload Data                      |
  120. //  -----------------------------------
  121. // | Padding Data                      |
  122. //  -----------------------------------
  123.  
  124.  
  125. // PPI_FLAG - Payload parsing information flags
  126. #define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1
  127.  
  128. #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE  0x02 //0000 0010
  129. #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD  0x04 //0000 0100
  130. #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110
  131. #define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE     0x06 //0000 0110
  132.  
  133. #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE  0x08 //0000 1000
  134. #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD  0x10 //0001 0000
  135. #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000
  136. #define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE     0x18 //0001 1000
  137.  
  138. #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE  0x20 //0010 0000
  139. #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD  0x40 //0100 0000
  140. #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000
  141. #define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE     0x60 //0110 0000
  142.  
  143. // PL_FLAG - Payload flags
  144. #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE   0x01 //0000 0001
  145. #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD   0x02 //0000 0010
  146. #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD  0x03 //0000 0011
  147. #define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE      0x03 //0000 0011
  148.  
  149. #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE  0x04 //0000 0100
  150. #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD  0x08 //0000 1000
  151. #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100
  152. #define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE     0x0c //0000 1100
  153.  
  154. #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE  0x10 //0001 0000
  155. #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD  0x20 //0010 0000
  156. #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000
  157. #define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE     0x30 //0011 0000
  158.  
  159. #define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE  0x40 //0100 0000
  160. #define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE     0xc0 //1100 0000
  161.  
  162. #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE  0x40 //0100 0000
  163. #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD  0x80 //1000 0000
  164. #define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE     0xc0 //1100 0000
  165.  
  166. #define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000
  167.  
  168. extern AVInputFormat ff_asf_demuxer;
  169.  
  170. #endif /* AVFORMAT_ASF_H */
  171.