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FFmpeg/libavformat/avienc.c

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  1. /*

  2.  * AVI encoder.

  3.  * Copyright (c) 2000 Fabrice Bellard.

  4.  *

  5.  * This library is free software; you can redistribute it and/or

  6.  * modify it under the terms of the GNU Lesser General Public

  7.  * License as published by the Free Software Foundation; either

  8.  * version 2 of the License, or (at your option) any later version.

  9.  *

  10.  * This library is distributed in the hope that it will be useful,

  11.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  12.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  13.  * Lesser General Public License for more details.

  14.  *

  15.  * You should have received a copy of the GNU Lesser General Public

  16.  * License along with this library; if not, write to the Free Software

  17.  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

  18.  */

  19. #include "avformat.h"

  20. #include "avi.h"

  21. 

  22. /*

  23.  * TODO: 

  24.  *  - fill all fields if non streamed (nb_frames for example)

  25.  */

  26. 

  27. #ifdef CONFIG_ENCODERS

  28. typedef struct AVIIentry {

  29.     unsigned int flags, pos, len;

  30. } AVIIentry;

  31. 

  32. #define AVI_INDEX_CLUSTER_SIZE 16384

  33. 

  34. typedef struct AVIIndex {

  35.     offset_t    indx_start;

  36.     int         entry;

  37.     int         ents_allocated;

  38.     AVIIentry** cluster;

  39. } AVIIndex;

  40. 

  41. typedef struct {

  42.     offset_t riff_start, movi_list, odml_list;

  43.     offset_t frames_hdr_all, frames_hdr_strm[MAX_STREAMS];

  44.     int audio_strm_length[MAX_STREAMS];

  45.     int riff_id;

  46.     int packet_count[MAX_STREAMS];

  47. 

  48.     AVIIndex indexes[MAX_STREAMS];

  49. } AVIContext;

  50. 

  51. static inline AVIIentry* avi_get_ientry(AVIIndex* idx, int ent_id) 

  52. {

  53.     int cl = ent_id / AVI_INDEX_CLUSTER_SIZE;

  54.     int id = ent_id % AVI_INDEX_CLUSTER_SIZE;

  55.     return &idx->cluster[cl][id];

  56. }

  57. 

  58. offset_t start_tag(ByteIOContext *pb, const char *tag)

  59. {

  60.     put_tag(pb, tag);

  61.     put_le32(pb, 0);

  62.     return url_ftell(pb);

  63. }

  64. 

  65. void end_tag(ByteIOContext *pb, offset_t start)

  66. {

  67.     offset_t pos;

  68. 

  69.     pos = url_ftell(pb);

  70.     url_fseek(pb, start - 4, SEEK_SET);

  71.     put_le32(pb, (uint32_t)(pos - start));

  72.     url_fseek(pb, pos, SEEK_SET);

  73. }

  74. #endif //CONFIG_ENCODERS

  75. 

  76. /* Note: when encoding, the first matching tag is used, so order is

  77.    important if multiple tags possible for a given codec. */

  78. const CodecTag codec_bmp_tags[] = {

  79.     { CODEC_ID_H264, MKTAG('H', '2', '6', '4') },

  80.     { CODEC_ID_H264, MKTAG('V', 'S', 'S', 'H') },

  81. 

  82.     { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },

  83.     { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },

  84.     { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */

  85.     { CODEC_ID_H261, MKTAG('H', '2', '6', '1') },

  86. 

  87.     /* added based on MPlayer */

  88.     { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },

  89.     { CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },

  90. 

  91.     { CODEC_ID_MPEG4, MKTAG('F', 'M', 'P', '4')},

  92.     { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X'), .invalid_asf = 1 },

  93.     { CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0'), .invalid_asf = 1 },

  94.     { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D'), .invalid_asf = 1 },

  95.     { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },

  96.     { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },

  97.     { CODEC_ID_MPEG4, MKTAG(0x04, 0, 0, 0) }, /* some broken avi use this */

  98. 

  99.     /* added based on MPlayer */

  100.     { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },

  101.     { CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },

  102.     { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },

  103.     { CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },

  104.     { CODEC_ID_MPEG4, MKTAG('W', 'V', '1', 'F') },

  105. 

  106.     { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3'), .invalid_asf = 1 }, /* default signature when using MSMPEG4 */

  107.     { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') }, 

  108. 

  109.     /* added based on MPlayer */

  110.     { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') }, 

  111.     { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') }, 

  112.     { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') }, 

  113.     { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') }, 

  114.     { CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') }, 

  115.     { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') }, 

  116.     { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') }, 

  117. 

  118.     { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') }, 

  119. 

  120.     /* added based on MPlayer */

  121.     { CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },

  122.  

  123.     { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') }, 

  124. 

  125.     { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') }, 

  126. 

  127.     /* added based on MPlayer */

  128.     { CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') }, 

  129.     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') }, 

  130.     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') }, 

  131.     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') }, 

  132.     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },

  133.     { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') }, 

  134.     { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') }, 

  135.     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', '2') }, 

  136.     { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') }, 

  137.     { CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') }, 

  138.     { CODEC_ID_MPEG1VIDEO, 0x10000001 }, 

  139.     { CODEC_ID_MPEG2VIDEO, 0x10000002 }, 

  140.     { CODEC_ID_MPEG2VIDEO, MKTAG('D', 'V', 'R', ' ') },

  141.     { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },

  142.     { CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },

  143.     { CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },

  144.     { CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */

  145.     { CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },

  146.     { CODEC_ID_FFVHUFF, MKTAG('F', 'F', 'V', 'H') },

  147.     { CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },

  148.     { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },

  149.     { CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },

  150.     { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },

  151.     { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },

  152.     { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },

  153.     { CODEC_ID_VP3, MKTAG('V', 'P', '3', '0') },

  154.     { CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },

  155.     { CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') },

  156.     { CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },

  157.     { CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },

  158.     { CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') },

  159.     { CODEC_ID_MSRLE, MKTAG('m', 'r', 'l', 'e') },

  160.     { CODEC_ID_MSRLE, MKTAG(0x1, 0x0, 0x0, 0x0) },

  161.     { CODEC_ID_MSVIDEO1, MKTAG('M', 'S', 'V', 'C') },

  162.     { CODEC_ID_MSVIDEO1, MKTAG('m', 's', 'v', 'c') },

  163.     { CODEC_ID_MSVIDEO1, MKTAG('C', 'R', 'A', 'M') },

  164.     { CODEC_ID_MSVIDEO1, MKTAG('c', 'r', 'a', 'm') },

  165.     { CODEC_ID_MSVIDEO1, MKTAG('W', 'H', 'A', 'M') },

  166.     { CODEC_ID_MSVIDEO1, MKTAG('w', 'h', 'a', 'm') },

  167.     { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') },

  168.     { CODEC_ID_TRUEMOTION1, MKTAG('D', 'U', 'C', 'K') },

  169.     { CODEC_ID_MSZH, MKTAG('M', 'S', 'Z', 'H') },

  170.     { CODEC_ID_ZLIB, MKTAG('Z', 'L', 'I', 'B') },

  171.     { CODEC_ID_SNOW, MKTAG('S', 'N', 'O', 'W') },

  172.     { CODEC_ID_4XM, MKTAG('4', 'X', 'M', 'V') },

  173.     { CODEC_ID_FLV1, MKTAG('F', 'L', 'V', '1') },

  174.     { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') },

  175.     { CODEC_ID_TSCC, MKTAG('t', 's', 'c', 'c') },

  176.     { CODEC_ID_ULTI, MKTAG('U', 'L', 'T', 'I') },

  177.     { CODEC_ID_VIXL, MKTAG('V', 'I', 'X', 'L') },

  178.     { CODEC_ID_QPEG, MKTAG('Q', 'P', 'E', 'G') },

  179.     { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '0') },

  180.     { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '1') },

  181.     { CODEC_ID_WMV3, MKTAG('W', 'M', 'V', '3') },

  182.     { CODEC_ID_LOCO, MKTAG('L', 'O', 'C', 'O') },

  183.     { CODEC_ID_WNV1, MKTAG('W', 'N', 'V', '1') },

  184.     { CODEC_ID_AASC, MKTAG('A', 'A', 'S', 'C') },

  185.     { CODEC_ID_INDEO2, MKTAG('R', 'T', '2', '1') },

  186.     { CODEC_ID_FRAPS, MKTAG('F', 'P', 'S', '1') },

  187.     { CODEC_ID_THEORA, MKTAG('t', 'h', 'e', 'o') },

  188.     { CODEC_ID_RAWVIDEO, 0 },

  189.     { 0, 0 },

  190. };

  191. 

  192. unsigned int codec_get_tag(const CodecTag *tags, int id)

  193. {

  194.     while (tags->id != 0) {

  195.         if (tags->id == id)

  196.             return tags->tag;

  197.         tags++;

  198.     }

  199.     return 0;

  200. }

  201. 

  202. static unsigned int codec_get_asf_tag(const CodecTag *tags, unsigned int id)

  203. {

  204.     while (tags->id != 0) {

  205.         if (!tags->invalid_asf && tags->id == id)

  206.             return tags->tag;

  207.         tags++;

  208.     }

  209.     return 0;

  210. }

  211. 

  212. enum CodecID codec_get_id(const CodecTag *tags, unsigned int tag)

  213. {

  214.     while (tags->id != 0) {

  215.         if(   toupper((tag >> 0)&0xFF) == toupper((tags->tag >> 0)&0xFF)

  216.            && toupper((tag >> 8)&0xFF) == toupper((tags->tag >> 8)&0xFF)

  217.            && toupper((tag >>16)&0xFF) == toupper((tags->tag >>16)&0xFF)

  218.            && toupper((tag >>24)&0xFF) == toupper((tags->tag >>24)&0xFF))

  219.             return tags->id;

  220.         tags++;

  221.     }

  222.     return CODEC_ID_NONE;

  223. }

  224. 

  225. unsigned int codec_get_bmp_tag(int id)

  226. {

  227.     return codec_get_tag(codec_bmp_tags, id);

  228. }

  229. 

  230. unsigned int codec_get_wav_tag(int id)

  231. {

  232.     return codec_get_tag(codec_wav_tags, id);

  233. }

  234. 

  235. enum CodecID codec_get_bmp_id(unsigned int tag)

  236. {

  237.     return codec_get_id(codec_bmp_tags, tag);

  238. }

  239. 

  240. enum CodecID codec_get_wav_id(unsigned int tag)

  241. {

  242.     return codec_get_id(codec_wav_tags, tag);

  243. }

  244. 

  245. #ifdef CONFIG_ENCODERS

  246. /* BITMAPINFOHEADER header */

  247. void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const CodecTag *tags, int for_asf)

  248. {

  249.     put_le32(pb, 40 + enc->extradata_size); /* size */

  250.     put_le32(pb, enc->width);

  251.     put_le32(pb, enc->height);

  252.     put_le16(pb, 1); /* planes */

  253.     

  254.     put_le16(pb, enc->bits_per_sample ? enc->bits_per_sample : 24); /* depth */

  255.     /* compression type */

  256.     put_le32(pb, for_asf ? (enc->codec_tag ? enc->codec_tag : codec_get_asf_tag(tags, enc->codec_id)) : enc->codec_tag); //

  257.     put_le32(pb, enc->width * enc->height * 3);

  258.     put_le32(pb, 0);

  259.     put_le32(pb, 0);

  260.     put_le32(pb, 0);

  261.     put_le32(pb, 0);

  262.     

  263.     put_buffer(pb, enc->extradata, enc->extradata_size);

  264. 

  265.     if (enc->extradata_size & 1)

  266.         put_byte(pb, 0);

  267. }

  268. 

  269. void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)

  270. {

  271.     int gcd;

  272. 

  273.     *au_ssize= stream->block_align;

  274.     if(stream->frame_size && stream->sample_rate){

  275.         *au_scale=stream->frame_size;

  276.         *au_rate= stream->sample_rate;

  277.     }else if(stream->codec_type == CODEC_TYPE_VIDEO){

  278.         *au_scale= stream->time_base.num;

  279.         *au_rate = stream->time_base.den;

  280.     }else{

  281.         *au_scale= stream->block_align ? stream->block_align*8 : 8;

  282.         *au_rate = stream->bit_rate;

  283.     }

  284.     gcd= ff_gcd(*au_scale, *au_rate);

  285.     *au_scale /= gcd;

  286.     *au_rate /= gcd;

  287. }

  288. 

  289. static offset_t avi_start_new_riff(AVIContext *avi, ByteIOContext *pb, 

  290.                                    const char* riff_tag, const char* list_tag)

  291. {

  292.     offset_t loff;

  293.     int i;

  294.     

  295.     avi->riff_id++;

  296.     for (i=0; i<MAX_STREAMS; i++)

  297.          avi->indexes[i].entry = 0;

  298.     

  299.     avi->riff_start = start_tag(pb, "RIFF");

  300.     put_tag(pb, riff_tag);

  301.     loff = start_tag(pb, "LIST");

  302.     put_tag(pb, list_tag);

  303.     return loff;

  304. }

  305. 

  306. static unsigned char* avi_stream2fourcc(unsigned char* tag, int index, 

  307.                                         enum CodecType type)

  308. {

  309.     tag[0] = '0';

  310.     tag[1] = '0' + index;

  311.     if (type == CODEC_TYPE_VIDEO) {

  312.         tag[2] = 'd';

  313.         tag[3] = 'c';

  314.     } else {

  315.         tag[2] = 'w';

  316.         tag[3] = 'b';

  317.     }

  318.     tag[4] = '\0';

  319.     return tag;

  320. }

  321. 

  322. static int avi_write_header(AVFormatContext *s)

  323. {

  324.     AVIContext *avi = s->priv_data;

  325.     ByteIOContext *pb = &s->pb;

  326.     int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;

  327.     AVCodecContext *stream, *video_enc;

  328.     offset_t list1, list2, strh, strf;

  329. 

  330.     /* header list */

  331.     avi->riff_id = 0;

  332.     list1 = avi_start_new_riff(avi, pb, "AVI ", "hdrl");

  333. 

  334.     /* avi header */

  335.     put_tag(pb, "avih");

  336.     put_le32(pb, 14 * 4);

  337.     bitrate = 0;

  338. 

  339.     video_enc = NULL;

  340.     for(n=0;n<s->nb_streams;n++) {

  341.         stream = &s->streams[n]->codec;

  342.         bitrate += stream->bit_rate;

  343.         if (stream->codec_type == CODEC_TYPE_VIDEO)

  344.             video_enc = stream;

  345.     }

  346.     

  347.     nb_frames = 0;

  348. 

  349.     if(video_enc){

  350.         put_le32(pb, (uint32_t)(int64_t_C(1000000) * video_enc->time_base.num / video_enc->time_base.den));

  351.     } else {

  352. 	put_le32(pb, 0);

  353.     }

  354.     put_le32(pb, bitrate / 8); /* XXX: not quite exact */

  355.     put_le32(pb, 0); /* padding */

  356.     put_le32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */

  357.     avi->frames_hdr_all = url_ftell(pb); /* remember this offset to fill later */

  358.     put_le32(pb, nb_frames); /* nb frames, filled later */

  359.     put_le32(pb, 0); /* initial frame */

  360.     put_le32(pb, s->nb_streams); /* nb streams */

  361.     put_le32(pb, 1024 * 1024); /* suggested buffer size */

  362.     if(video_enc){    

  363.     put_le32(pb, video_enc->width);

  364.     put_le32(pb, video_enc->height);

  365.     } else {

  366. 	put_le32(pb, 0);

  367. 	put_le32(pb, 0);

  368.     }	

  369.     put_le32(pb, 0); /* reserved */

  370.     put_le32(pb, 0); /* reserved */

  371.     put_le32(pb, 0); /* reserved */

  372.     put_le32(pb, 0); /* reserved */

  373.     

  374.     /* stream list */

  375.     for(i=0;i<n;i++) {

  376.         list2 = start_tag(pb, "LIST");

  377.         put_tag(pb, "strl");

  378.     

  379.         stream = &s->streams[i]->codec;

  380. 

  381.         /* FourCC should really be set by the codec itself */

  382.         if (! stream->codec_tag) {

  383.             stream->codec_tag = codec_get_bmp_tag(stream->codec_id);

  384.         }

  385. 

  386.         /* stream generic header */

  387.         strh = start_tag(pb, "strh");

  388.         switch(stream->codec_type) {

  389.         case CODEC_TYPE_VIDEO: put_tag(pb, "vids"); break;

  390.         case CODEC_TYPE_AUDIO: put_tag(pb, "auds"); break;

  391. //        case CODEC_TYPE_TEXT : put_tag(pb, "txts"); break;

  392.         case CODEC_TYPE_DATA : put_tag(pb, "dats"); break;

  393.         }

  394.         if(stream->codec_type == CODEC_TYPE_VIDEO)

  395.             put_le32(pb, stream->codec_tag);

  396.         else

  397.             put_le32(pb, 1);

  398.         put_le32(pb, 0); /* flags */

  399.         put_le16(pb, 0); /* priority */

  400.         put_le16(pb, 0); /* language */

  401.         put_le32(pb, 0); /* initial frame */

  402. 

  403.         ff_parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);

  404. 

  405.         put_le32(pb, au_scale); /* scale */

  406.         put_le32(pb, au_byterate); /* rate */

  407.         av_set_pts_info(s->streams[i], 64, au_scale, au_byterate);

  408. 

  409.         put_le32(pb, 0); /* start */

  410.         avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */

  411.         put_le32(pb, 0); /* length, XXX: filled later */

  412.         

  413.         /* suggested buffer size */ //FIXME set at the end to largest chunk

  414.         if(stream->codec_type == CODEC_TYPE_VIDEO)

  415.             put_le32(pb, 1024 * 1024); 

  416.         else if(stream->codec_type == CODEC_TYPE_AUDIO)

  417.             put_le32(pb, 12 * 1024); 

  418.         else

  419.             put_le32(pb, 0); 

  420.         put_le32(pb, -1); /* quality */

  421.         put_le32(pb, au_ssize); /* sample size */

  422.         put_le32(pb, 0);

  423.         put_le16(pb, stream->width);

  424.         put_le16(pb, stream->height);

  425.         end_tag(pb, strh);

  426. 

  427.       if(stream->codec_type != CODEC_TYPE_DATA){

  428.         strf = start_tag(pb, "strf");

  429.         switch(stream->codec_type) {

  430.         case CODEC_TYPE_VIDEO:

  431. 	    put_bmp_header(pb, stream, codec_bmp_tags, 0);

  432.             break;

  433.         case CODEC_TYPE_AUDIO:

  434.             if (put_wav_header(pb, stream) < 0) {

  435.                 av_free(avi);

  436.                 return -1;

  437.             }

  438.             break;

  439.         default:

  440.             return -1;

  441.         }

  442.         end_tag(pb, strf);

  443.       }

  444. 	

  445. 	if (!url_is_streamed(pb)) {

  446. 	    unsigned char tag[5];

  447. 	    int j;

  448.     

  449.             /* Starting to lay out AVI OpenDML master index. 

  450. 	     * We want to make it JUNK entry for now, since we'd

  451. 	     * like to get away without making AVI an OpenDML one 

  452. 	     * for compatibility reasons.

  453. 	     */

  454. 	    avi->indexes[i].entry = avi->indexes[i].ents_allocated = 0;

  455. 	    avi->indexes[i].indx_start = start_tag(pb, "JUNK"); 

  456. 	    put_le16(pb, 4);        /* wLongsPerEntry */

  457. 	    put_byte(pb, 0);        /* bIndexSubType (0 == frame index) */

  458. 	    put_byte(pb, 0);        /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */

  459. 	    put_le32(pb, 0);        /* nEntriesInUse (will fill out later on) */

  460. 	    put_tag(pb, avi_stream2fourcc(&tag[0], i, stream->codec_type));

  461. 	                            /* dwChunkId */

  462. 	    put_le64(pb, 0);        /* dwReserved[3]

  463. 	    put_le32(pb, 0);           Must be 0.    */

  464. 	    for (j=0; j < AVI_MASTER_INDEX_SIZE * 2; j++)

  465. 	         put_le64(pb, 0);

  466. 	    end_tag(pb, avi->indexes[i].indx_start);

  467. 	}

  468. 	

  469.         end_tag(pb, list2);

  470.     }

  471.     

  472.     if (!url_is_streamed(pb)) {

  473.         /* AVI could become an OpenDML one, if it grows beyond 2Gb range */

  474.         avi->odml_list = start_tag(pb, "JUNK");

  475.         put_tag(pb, "odml");

  476.         put_tag(pb, "dmlh");

  477.         put_le32(pb, 248);

  478.         for (i = 0; i < 248; i+= 4)

  479.              put_le32(pb, 0);

  480.         end_tag(pb, avi->odml_list);

  481.     }

  482. 

  483.     end_tag(pb, list1);

  484.     

  485.     avi->movi_list = start_tag(pb, "LIST");

  486.     put_tag(pb, "movi");

  487. 

  488.     put_flush_packet(pb);

  489. 

  490.     return 0;

  491. }

  492. 

  493. static int avi_write_ix(AVFormatContext *s)

  494. {

  495.     ByteIOContext *pb = &s->pb;

  496.     AVIContext *avi = s->priv_data;

  497.     unsigned char tag[5];

  498.     unsigned char ix_tag[] = "ix00";

  499.     int i, j;

  500.     

  501.     if (avi->riff_id > AVI_MASTER_INDEX_SIZE)

  502.         return -1;

  503.     

  504.     for (i=0;i<s->nb_streams;i++) {

  505. 	 offset_t ix, pos;

  506. 	 

  507. 	 avi_stream2fourcc(&tag[0], i, s->streams[i]->codec.codec_type);

  508. 	 ix_tag[3] = '0' + i;

  509. 	 

  510. 	 /* Writing AVI OpenDML leaf index chunk */

  511. 	 ix = url_ftell(pb); 

  512. 	 put_tag(pb, &ix_tag[0]);     /* ix?? */

  513. 	 put_le32(pb, avi->indexes[i].entry * 8 + 24); 

  514. 	                              /* chunk size */

  515.          put_le16(pb, 2);             /* wLongsPerEntry */

  516. 	 put_byte(pb, 0);             /* bIndexSubType (0 == frame index) */ 

  517. 	 put_byte(pb, 1);             /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */

  518. 	 put_le32(pb, avi->indexes[i].entry);          

  519. 	                              /* nEntriesInUse */

  520. 	 put_tag(pb, &tag[0]);        /* dwChunkId */

  521. 	 put_le64(pb, avi->movi_list);/* qwBaseOffset */

  522. 	 put_le32(pb, 0);             /* dwReserved_3 (must be 0) */

  523. 

  524.          for (j=0; j<avi->indexes[i].entry; j++) {

  525.              AVIIentry* ie = avi_get_ientry(&avi->indexes[i], j);

  526. 	     put_le32(pb, ie->pos + 8);

  527. 	     put_le32(pb, ((uint32_t)ie->len & ~0x80000000) |

  528. 	                  (ie->flags & 0x10 ? 0 : 0x80000000));

  529.          }

  530. 	 put_flush_packet(pb);

  531.          pos = url_ftell(pb);

  532. 	

  533. 	 /* Updating one entry in the AVI OpenDML master index */

  534. 	 url_fseek(pb, avi->indexes[i].indx_start - 8, SEEK_SET);

  535. 	 put_tag(pb, "indx");                 /* enabling this entry */

  536. 	 url_fskip(pb, 8);

  537. 	 put_le32(pb, avi->riff_id);          /* nEntriesInUse */

  538. 	 url_fskip(pb, 16*avi->riff_id);

  539. 	 put_le64(pb, ix);                    /* qwOffset */

  540. 	 put_le32(pb, pos - ix);              /* dwSize */

  541. 	 put_le32(pb, avi->indexes[i].entry); /* dwDuration */

  542. 

  543. 	 url_fseek(pb, pos, SEEK_SET);

  544.     }

  545.     return 0;

  546. }

  547. 

  548. static int avi_write_idx1(AVFormatContext *s)

  549. {

  550.     ByteIOContext *pb = &s->pb;

  551.     AVIContext *avi = s->priv_data;

  552.     offset_t file_size, idx_chunk;

  553.     int i, n, nb_frames, au_byterate, au_ssize, au_scale;

  554.     AVCodecContext *stream;

  555.     unsigned char tag[5];

  556. 

  557.     if (!url_is_streamed(pb)) {

  558. 	AVIIentry* ie = 0, *tie;

  559. 	int entry[MAX_STREAMS];

  560. 	int empty, stream_id = -1;

  561. 

  562. 	idx_chunk = start_tag(pb, "idx1");

  563. 	memset(&entry[0], 0, sizeof(entry));

  564. 	do {

  565. 	    empty = 1;

  566. 	    for (i=0; i<s->nb_streams; i++) {

  567. 	         if (avi->indexes[i].entry <= entry[i])

  568. 		     continue;

  569. 		 

  570. 		 tie = avi_get_ientry(&avi->indexes[i], entry[i]);

  571. 		 if (empty || tie->pos < ie->pos) {

  572. 		     ie = tie; 

  573. 		     stream_id = i;

  574. 		 }

  575. 		 empty = 0;

  576. 	    }

  577. 	    if (!empty) {

  578. 	        avi_stream2fourcc(&tag[0], stream_id, 

  579. 		                  s->streams[stream_id]->codec.codec_type); 

  580. 	        put_tag(pb, &tag[0]);

  581. 		put_le32(pb, ie->flags);

  582.                 put_le32(pb, ie->pos);

  583.                 put_le32(pb, ie->len);

  584. 		entry[stream_id]++;

  585. 	    }

  586. 	} while (!empty);

  587. 	end_tag(pb, idx_chunk);

  588. 

  589.         /* Fill in frame/sample counters */

  590. 	file_size = url_ftell(pb);

  591.         nb_frames = 0;

  592.         for(n=0;n<s->nb_streams;n++) {

  593.             if (avi->frames_hdr_strm[n] != 0) {

  594.                 stream = &s->streams[n]->codec;

  595.                 url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);

  596.                 ff_parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);

  597.                 if (au_ssize == 0) {

  598.                     put_le32(pb, stream->frame_number);

  599.                     nb_frames += stream->frame_number;

  600.                 } else {

  601.                     put_le32(pb, avi->audio_strm_length[n] / au_ssize);

  602.                 }

  603.             }

  604.        }

  605.        if (avi->frames_hdr_all != 0) {

  606.            url_fseek(pb, avi->frames_hdr_all, SEEK_SET);

  607.            put_le32(pb, nb_frames); 

  608.        }

  609.        url_fseek(pb, file_size, SEEK_SET);

  610.     }

  611.     return 0;

  612. }

  613. 

  614. static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)

  615. {

  616.     AVIContext *avi = s->priv_data;

  617.     ByteIOContext *pb = &s->pb;

  618.     unsigned char tag[5];

  619.     unsigned int flags=0;

  620.     const int stream_index= pkt->stream_index;

  621.     AVCodecContext *enc= &s->streams[stream_index]->codec;

  622.     int size= pkt->size;

  623. 

  624. //    av_log(s, AV_LOG_DEBUG, "%lld %d %d\n", pkt->dts, avi->packet_count[stream_index], stream_index);

  625.     while(enc->block_align==0 && pkt->dts != AV_NOPTS_VALUE && pkt->dts > avi->packet_count[stream_index]){

  626.         AVPacket empty_packet;

  627. 

  628.         av_init_packet(&empty_packet);

  629.         empty_packet.size= 0;

  630.         empty_packet.data= NULL;

  631.         empty_packet.stream_index= stream_index;

  632.         avi_write_packet(s, &empty_packet);

  633. //        av_log(s, AV_LOG_DEBUG, "dup %lld %d\n", pkt->dts, avi->packet_count[stream_index]);

  634.     }

  635.     avi->packet_count[stream_index]++;

  636. 

  637.     if (url_ftell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE) { 

  638.         avi_write_ix(s);

  639.         end_tag(pb, avi->movi_list);

  640.         

  641. 	if (avi->riff_id == 1)

  642. 	    avi_write_idx1(s);

  643. 

  644. 	end_tag(pb, avi->riff_start);

  645. 	avi->movi_list = avi_start_new_riff(avi, pb, "AVIX", "movi");

  646.     }

  647.     

  648.     avi_stream2fourcc(&tag[0], stream_index, enc->codec_type);

  649.     if(pkt->flags&PKT_FLAG_KEY)

  650.         flags = 0x10;

  651.     if (enc->codec_type == CODEC_TYPE_AUDIO) {

  652.        avi->audio_strm_length[stream_index] += size;

  653.     }

  654. 

  655.     if (!url_is_streamed(&s->pb)) {

  656.         AVIIndex* idx = &avi->indexes[stream_index];

  657. 	int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;

  658. 	int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;

  659.         if (idx->ents_allocated <= idx->entry) {

  660. 	    idx->cluster = av_realloc(idx->cluster, (cl+1)*sizeof(void*)); 

  661. 	    if (!idx->cluster)

  662. 	        return -1;

  663.             idx->cluster[cl] = av_malloc(AVI_INDEX_CLUSTER_SIZE*sizeof(AVIIentry));

  664. 	    if (!idx->cluster[cl])

  665. 		return -1;

  666. 	    idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;

  667. 	}

  668.  	

  669. 	idx->cluster[cl][id].flags = flags; 

  670.         idx->cluster[cl][id].pos = url_ftell(pb) - avi->movi_list;

  671.         idx->cluster[cl][id].len = size;

  672. 	idx->entry++;

  673.     }

  674.     

  675.     put_buffer(pb, tag, 4);

  676.     put_le32(pb, size);

  677.     put_buffer(pb, pkt->data, size);

  678.     if (size & 1)

  679.         put_byte(pb, 0);

  680. 

  681.     put_flush_packet(pb);

  682.     return 0;

  683. }

  684. 

  685. static int avi_write_trailer(AVFormatContext *s)

  686. {

  687.     AVIContext *avi = s->priv_data;

  688.     ByteIOContext *pb = &s->pb;

  689.     int res = 0;

  690.     int i, j, n, nb_frames;

  691.     offset_t file_size;

  692. 

  693.     if (avi->riff_id == 1) {

  694.         end_tag(pb, avi->movi_list);

  695.         res = avi_write_idx1(s);

  696. 	end_tag(pb, avi->riff_start);

  697.     } else {

  698.         avi_write_ix(s);

  699.         end_tag(pb, avi->movi_list);

  700. 	end_tag(pb, avi->riff_start);

  701. 

  702.         file_size = url_ftell(pb);

  703. 	url_fseek(pb, avi->odml_list - 8, SEEK_SET);

  704. 	put_tag(pb, "LIST"); /* Making this AVI OpenDML one */

  705. 	url_fskip(pb, 16);

  706. 

  707.         for (n=nb_frames=0;n<s->nb_streams;n++) {

  708.              AVCodecContext *stream = &s->streams[n]->codec;

  709.              if (stream->codec_type == CODEC_TYPE_VIDEO) {

  710.                  if (nb_frames < stream->frame_number)

  711.                      nb_frames = stream->frame_number;

  712.              } else {

  713.                  if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3) {

  714.                      nb_frames += stream->frame_number;

  715.                 }

  716.             }

  717.         }

  718. 	put_le32(pb, nb_frames);

  719. 	url_fseek(pb, file_size, SEEK_SET);

  720.     }

  721.     put_flush_packet(pb);

  722. 

  723.     for (i=0; i<MAX_STREAMS; i++) {

  724. 	 for (j=0; j<avi->indexes[i].ents_allocated/AVI_INDEX_CLUSTER_SIZE; j++)

  725.               av_free(avi->indexes[i].cluster[j]);

  726. 	 av_free(avi->indexes[i].cluster);

  727. 	 avi->indexes[i].cluster = NULL;

  728. 	 avi->indexes[i].ents_allocated = avi->indexes[i].entry = 0;

  729.     }

  730.     

  731.     return res;

  732. }

  733. 

  734. static AVOutputFormat avi_oformat = {

  735.     "avi",

  736.     "avi format",

  737.     "video/x-msvideo",

  738.     "avi",

  739.     sizeof(AVIContext),

  740.     CODEC_ID_MP2,

  741.     CODEC_ID_MPEG4,

  742.     avi_write_header,

  743.     avi_write_packet,

  744.     avi_write_trailer,

  745. };

  746. 

  747. int avienc_init(void)

  748. {

  749.     av_register_output_format(&avi_oformat);

  750.     return 0;

  751. }

  752. #endif //CONFIG_ENCODERS