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FFmpeg/libavformat/asf.h

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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. 

  27. #define PACKET_SIZE 3200

  28. 

  29. typedef struct {

  30.     int num;

  31.     unsigned char seq;

  32.     /* use for reading */

  33.     AVPacket pkt;

  34.     int frag_offset;

  35.     int timestamp;

  36.     int64_t duration;

  37. 

  38.     int ds_span;                /* descrambling  */

  39.     int ds_packet_size;

  40.     int ds_chunk_size;

  41. 

  42.     int64_t packet_pos;

  43. 

  44. } ASFStream;

  45. 

  46. typedef uint8_t GUID[16];

  47. 

  48. typedef struct {

  49.     GUID guid;                  ///< generated by client computer

  50.     uint64_t file_size;         /**< in bytes

  51.                                  *   invalid if broadcasting */

  52.     uint64_t create_time;       /**< time of creation, in 100-nanosecond units since 1.1.1601

  53.                                  *   invalid if broadcasting */

  54.     uint64_t play_time;         /**< play time, in 100-nanosecond units

  55.                                  * invalid if broadcasting */

  56.     uint64_t send_time;         /**< time to send file, in 100-nanosecond units

  57.                                  *   invalid if broadcasting (could be ignored) */

  58.     uint32_t preroll;           /**< timestamp of the first packet, in milliseconds

  59.                                  *   if nonzero - substract from time */

  60.     uint32_t ignore;            ///< preroll is 64bit - but let's just ignore it

  61.     uint32_t flags;             /**< 0x01 - broadcast

  62.                                  *   0x02 - seekable

  63.                                  *   rest is reserved should be 0 */

  64.     uint32_t min_pktsize;       /**< size of a data packet

  65.                                  *   invalid if broadcasting */

  66.     uint32_t max_pktsize;       /**< shall be the same as for min_pktsize

  67.                                  *   invalid if broadcasting */

  68.     uint32_t max_bitrate;       /**< bandwith of stream in bps

  69.                                  *   should be the sum of bitrates of the

  70.                                  *   individual media streams */

  71. } ASFMainHeader;

  72. 

  73. 

  74. typedef struct {

  75.     uint32_t packet_number;

  76.     uint16_t packet_count;

  77. } ASFIndex;

  78. 

  79. 

  80. typedef struct {

  81.     uint32_t seqno;

  82.     unsigned int packet_size;

  83.     int is_streamed;

  84.     int asfid2avid[128];                 ///< conversion table from asf ID 2 AVStream ID

  85.     ASFStream streams[128];              ///< it's max number and it's not that big

  86.     uint32_t stream_bitrates[128];       ///< max number of streams, bitrate for each (for streaming)

  87.     /* non streamed additonnal info */

  88.     uint64_t nb_packets;                 ///< how many packets are there in the file, invalid if broadcasting

  89.     int64_t duration;                    ///< in 100ns units

  90.     /* packet filling */

  91.     unsigned char multi_payloads_present;

  92.     int packet_size_left;

  93.     int packet_timestamp_start;

  94.     int packet_timestamp_end;

  95.     unsigned int packet_nb_payloads;

  96.     int packet_nb_frames;

  97.     uint8_t packet_buf[PACKET_SIZE];

  98.     ByteIOContext pb;

  99.     /* only for reading */

  100.     uint64_t data_offset;                ///< begining of the first data packet

  101.     uint64_t data_object_offset;         ///< data object offset (excl. GUID & size)

  102.     uint64_t data_object_size;           ///< size of the data object

  103.     int index_read;

  104. 

  105.     ASFMainHeader hdr;

  106. 

  107.     int packet_flags;

  108.     int packet_property;

  109.     int packet_timestamp;

  110.     int packet_segsizetype;

  111.     int packet_segments;

  112.     int packet_seq;

  113.     int packet_replic_size;

  114.     int packet_key_frame;

  115.     int packet_padsize;

  116.     unsigned int packet_frag_offset;

  117.     unsigned int packet_frag_size;

  118.     int64_t packet_frag_timestamp;

  119.     int packet_multi_size;

  120.     int packet_obj_size;

  121.     int packet_time_delta;

  122.     int packet_time_start;

  123.     int64_t packet_pos;

  124. 

  125.     int stream_index;

  126. 

  127. 

  128.     int64_t last_indexed_pts;

  129.     ASFIndex* index_ptr;

  130.     uint32_t nb_index_count;

  131.     uint32_t nb_index_memory_alloc;

  132.     uint16_t maximum_packet;

  133. 

  134.     ASFStream* asf_st;                   ///< currently decoded stream

  135. } ASFContext;

  136. 

  137. static const GUID asf_header = {

  138.     0x30, 0x26, 0xB2, 0x75, 0x8E, 0x66, 0xCF, 0x11, 0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C

  139. };

  140. 

  141. static const GUID file_header = {

  142.     0xA1, 0xDC, 0xAB, 0x8C, 0x47, 0xA9, 0xCF, 0x11, 0x8E, 0xE4, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65

  143. };

  144. 

  145. static const GUID stream_header = {

  146.     0x91, 0x07, 0xDC, 0xB7, 0xB7, 0xA9, 0xCF, 0x11, 0x8E, 0xE6, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65

  147. };

  148. 

  149. static const GUID ext_stream_header = {

  150.     0xCB, 0xA5, 0xE6, 0x14, 0x72, 0xC6, 0x32, 0x43, 0x83, 0x99, 0xA9, 0x69, 0x52, 0x06, 0x5B, 0x5A

  151. };

  152. 

  153. static const GUID audio_stream = {

  154.     0x40, 0x9E, 0x69, 0xF8, 0x4D, 0x5B, 0xCF, 0x11, 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B

  155. };

  156. 

  157. static const GUID audio_conceal_none = {

  158.     // 0x40, 0xa4, 0xf1, 0x49, 0x4ece, 0x11d0, 0xa3, 0xac, 0x00, 0xa0, 0xc9, 0x03, 0x48, 0xf6

  159.     // New value lifted from avifile

  160.     0x00, 0x57, 0xfb, 0x20, 0x55, 0x5B, 0xCF, 0x11, 0xa8, 0xfd, 0x00, 0x80, 0x5f, 0x5c, 0x44, 0x2b

  161. };

  162. 

  163. static const GUID audio_conceal_spread = {

  164.      0x50, 0xCD, 0xC3, 0xBF, 0x8F, 0x61, 0xCF, 0x11, 0x8B, 0xB2, 0x00, 0xAA, 0x00, 0xB4, 0xE2, 0x20

  165. };

  166. 

  167. static const GUID video_stream = {

  168.     0xC0, 0xEF, 0x19, 0xBC, 0x4D, 0x5B, 0xCF, 0x11, 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B

  169. };

  170. 

  171. static const GUID video_conceal_none = {

  172.     0x00, 0x57, 0xFB, 0x20, 0x55, 0x5B, 0xCF, 0x11, 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B

  173. };

  174. 

  175. static const GUID command_stream = {

  176.     0xC0, 0xCF, 0xDA, 0x59, 0xE6, 0x59, 0xD0, 0x11, 0xA3, 0xAC, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6

  177. };

  178. 

  179. static const GUID comment_header = {

  180.     0x33, 0x26, 0xb2, 0x75, 0x8E, 0x66, 0xCF, 0x11, 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c

  181. };

  182. 

  183. static const GUID codec_comment_header = {

  184.     0x40, 0x52, 0xD1, 0x86, 0x1D, 0x31, 0xD0, 0x11, 0xA3, 0xA4, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6

  185. };

  186. static const GUID codec_comment1_header = {

  187.     0x41, 0x52, 0xd1, 0x86, 0x1D, 0x31, 0xD0, 0x11, 0xa3, 0xa4, 0x00, 0xa0, 0xc9, 0x03, 0x48, 0xf6

  188. };

  189. 

  190. static const GUID data_header = {

  191.     0x36, 0x26, 0xb2, 0x75, 0x8E, 0x66, 0xCF, 0x11, 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c

  192. };

  193. 

  194. static const GUID head1_guid = {

  195.     0xb5, 0x03, 0xbf, 0x5f, 0x2E, 0xA9, 0xCF, 0x11, 0x8e, 0xe3, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65

  196. };

  197. 

  198. static const GUID head2_guid = {

  199.     0x11, 0xd2, 0xd3, 0xab, 0xBA, 0xA9, 0xCF, 0x11, 0x8e, 0xe6, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65

  200. };

  201. 

  202. static const GUID extended_content_header = {

  203.         0x40, 0xA4, 0xD0, 0xD2, 0x07, 0xE3, 0xD2, 0x11, 0x97, 0xF0, 0x00, 0xA0, 0xC9, 0x5E, 0xA8, 0x50

  204. };

  205. 

  206. static const GUID simple_index_header = {

  207.         0x90, 0x08, 0x00, 0x33, 0xB1, 0xE5, 0xCF, 0x11, 0x89, 0xF4, 0x00, 0xA0, 0xC9, 0x03, 0x49, 0xCB

  208. };

  209. 

  210. static const GUID ext_stream_embed_stream_header = {

  211.         0xe2, 0x65, 0xfb, 0x3a, 0xEF, 0x47, 0xF2, 0x40, 0xac, 0x2c, 0x70, 0xa9, 0x0d, 0x71, 0xd3, 0x43

  212. };

  213. 

  214. static const GUID ext_stream_audio_stream = {

  215.         0x9d, 0x8c, 0x17, 0x31, 0xE1, 0x03, 0x28, 0x45, 0xb5, 0x82, 0x3d, 0xf9, 0xdb, 0x22, 0xf5, 0x03

  216. };

  217. 

  218. static const GUID metadata_header = {

  219.         0xea, 0xcb, 0xf8, 0xc5, 0xaf, 0x5b, 0x77, 0x48, 0x84, 0x67, 0xaa, 0x8c, 0x44, 0xfa, 0x4c, 0xca

  220. };

  221. 

  222. /* I am not a number !!! This GUID is the one found on the PC used to

  223.    generate the stream */

  224. static const GUID my_guid = {

  225.     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

  226. };

  227. 

  228. #define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000

  229. 

  230. 

  231. //   ASF data packet structure

  232. //   =========================

  233. //

  234. //

  235. //  -----------------------------------

  236. // | Error Correction Data             |  Optional

  237. //  -----------------------------------

  238. // | Payload Parsing Information (PPI) |

  239. //  -----------------------------------

  240. // | Payload Data                      |

  241. //  -----------------------------------

  242. // | Padding Data                      |

  243. //  -----------------------------------

  244. 

  245. 

  246. // PPI_FLAG - Payload parsing information flags

  247. #define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1

  248. 

  249. #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE  0x02 //0000 0010

  250. #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD  0x04 //0000 0100

  251. #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110

  252. #define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE     0x06 //0000 0110

  253. 

  254. #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE  0x08 //0000 1000

  255. #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD  0x10 //0001 0000

  256. #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000

  257. #define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE     0x18 //0001 1000

  258. 

  259. #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE  0x20 //0010 0000

  260. #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD  0x40 //0100 0000

  261. #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000

  262. #define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE     0x60 //0110 0000

  263. 

  264. // PL_FLAG - Payload flags

  265. #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE   0x01 //0000 0001

  266. #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD   0x02 //0000 0010

  267. #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD  0x03 //0000 0011

  268. #define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE      0x03 //0000 0011

  269. 

  270. #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE  0x04 //0000 0100

  271. #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD  0x08 //0000 1000

  272. #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100

  273. #define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE     0x0c //0000 1100

  274. 

  275. #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE  0x10 //0001 0000

  276. #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD  0x20 //0010 0000

  277. #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000

  278. #define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE     0x30 //0011 0000

  279. 

  280. #define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE  0x40 //0100 0000

  281. #define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE     0xc0 //1100 0000

  282. 

  283. #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE  0x40 //0100 0000

  284. #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD  0x80 //1000 0000

  285. #define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE     0xc0 //1100 0000

  286. 

  287. #define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000

  288. 

  289. #endif // AVFORMAT_ASF_H