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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_RAWVIDEO, 0 },

  188.     { 0, 0 },

  189. };

  190. 

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

  192. {

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

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

  195.             return tags->tag;

  196.         tags++;

  197.     }

  198.     return 0;

  199. }

  200. 

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

  202. {

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

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

  205.             return tags->tag;

  206.         tags++;

  207.     }

  208.     return 0;

  209. }

  210. 

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

  212. {

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

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

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

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

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

  218.             return tags->id;

  219.         tags++;

  220.     }

  221.     return CODEC_ID_NONE;

  222. }

  223. 

  224. unsigned int codec_get_bmp_tag(int id)

  225. {

  226.     return codec_get_tag(codec_bmp_tags, id);

  227. }

  228. 

  229. unsigned int codec_get_wav_tag(int id)

  230. {

  231.     return codec_get_tag(codec_wav_tags, id);

  232. }

  233. 

  234. enum CodecID codec_get_bmp_id(unsigned int tag)

  235. {

  236.     return codec_get_id(codec_bmp_tags, tag);

  237. }

  238. 

  239. enum CodecID codec_get_wav_id(unsigned int tag)

  240. {

  241.     return codec_get_id(codec_wav_tags, tag);

  242. }

  243. 

  244. #ifdef CONFIG_ENCODERS

  245. /* BITMAPINFOHEADER header */

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

  247. {

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

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

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

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

  252.     

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

  254.     /* compression type */

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

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

  257.     put_le32(pb, 0);

  258.     put_le32(pb, 0);

  259.     put_le32(pb, 0);

  260.     put_le32(pb, 0);

  261.     

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

  263. 

  264.     if (enc->extradata_size & 1)

  265.         put_byte(pb, 0);

  266. }

  267. 

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

  269. {

  270.     int gcd;

  271. 

  272.     *au_ssize= stream->block_align;

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

  274.         *au_scale=stream->frame_size;

  275.         *au_rate= stream->sample_rate;

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

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

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

  279.     }else{

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

  281.         *au_rate = stream->bit_rate;

  282.     }

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

  284.     *au_scale /= gcd;

  285.     *au_rate /= gcd;

  286. }

  287. 

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

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

  290. {

  291.     offset_t loff;

  292.     int i;

  293.     

  294.     avi->riff_id++;

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

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

  297.     

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

  299.     put_tag(pb, riff_tag);

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

  301.     put_tag(pb, list_tag);

  302.     return loff;

  303. }

  304. 

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

  306.                                         enum CodecType type)

  307. {

  308.     tag[0] = '0';

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

  310.     if (type == CODEC_TYPE_VIDEO) {

  311.         tag[2] = 'd';

  312.         tag[3] = 'c';

  313.     } else {

  314.         tag[2] = 'w';

  315.         tag[3] = 'b';

  316.     }

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

  318.     return tag;

  319. }

  320. 

  321. static int avi_write_header(AVFormatContext *s)

  322. {

  323.     AVIContext *avi = s->priv_data;

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

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

  326.     AVCodecContext *stream, *video_enc;

  327.     offset_t list1, list2, strh, strf;

  328. 

  329.     /* header list */

  330.     avi->riff_id = 0;

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

  332. 

  333.     /* avi header */

  334.     put_tag(pb, "avih");

  335.     put_le32(pb, 14 * 4);

  336.     bitrate = 0;

  337. 

  338.     video_enc = NULL;

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

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

  341.         bitrate += stream->bit_rate;

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

  343.             video_enc = stream;

  344.     }

  345.     

  346.     nb_frames = 0;

  347. 

  348.     if(video_enc){

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

  350.     } else {

  351. 	put_le32(pb, 0);

  352.     }

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

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

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

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

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

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

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

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

  361.     if(video_enc){    

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

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

  364.     } else {

  365. 	put_le32(pb, 0);

  366. 	put_le32(pb, 0);

  367.     }	

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

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

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

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

  372.     

  373.     /* stream list */

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

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

  376.         put_tag(pb, "strl");

  377.     

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

  379. 

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

  381.         if (! stream->codec_tag) {

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

  383.         }

  384. 

  385.         /* stream generic header */

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

  387.         switch(stream->codec_type) {

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

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

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

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

  392.         }

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

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

  395.         else

  396.             put_le32(pb, 1);

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

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

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

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

  401. 

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

  403. 

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

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

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

  407. 

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

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

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

  411.         

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

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

  414.             put_le32(pb, 1024 * 1024); 

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

  416.             put_le32(pb, 12 * 1024); 

  417.         else

  418.             put_le32(pb, 0); 

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

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

  421.         put_le32(pb, 0);

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

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

  424.         end_tag(pb, strh);

  425. 

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

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

  428.         switch(stream->codec_type) {

  429.         case CODEC_TYPE_VIDEO:

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

  431.             break;

  432.         case CODEC_TYPE_AUDIO:

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

  434.                 av_free(avi);

  435.                 return -1;

  436.             }

  437.             break;

  438.         default:

  439.             return -1;

  440.         }

  441.         end_tag(pb, strf);

  442.       }

  443. 	

  444. 	if (!url_is_streamed(pb)) {

  445. 	    unsigned char tag[5];

  446. 	    int j;

  447.     

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

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

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

  451. 	     * for compatibility reasons.

  452. 	     */

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

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

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

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

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

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

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

  460. 	                            /* dwChunkId */

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

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

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

  464. 	         put_le64(pb, 0);

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

  466. 	}

  467. 	

  468.         end_tag(pb, list2);

  469.     }

  470.     

  471.     if (!url_is_streamed(pb)) {

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

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

  474.         put_tag(pb, "odml");

  475.         put_tag(pb, "dmlh");

  476.         put_le32(pb, 248);

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

  478.              put_le32(pb, 0);

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

  480.     }

  481. 

  482.     end_tag(pb, list1);

  483.     

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

  485.     put_tag(pb, "movi");

  486. 

  487.     put_flush_packet(pb);

  488. 

  489.     return 0;

  490. }

  491. 

  492. static int avi_write_ix(AVFormatContext *s)

  493. {

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

  495.     AVIContext *avi = s->priv_data;

  496.     unsigned char tag[5];

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

  498.     int i, j;

  499.     

  500.     if (avi->riff_id > AVI_MASTER_INDEX_SIZE)

  501.         return -1;

  502.     

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

  504. 	 offset_t ix, pos;

  505. 	 

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

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

  508. 	 

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

  510. 	 ix = url_ftell(pb); 

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

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

  513. 	                              /* chunk size */

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

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

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

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

  518. 	                              /* nEntriesInUse */

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

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

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

  522. 

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

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

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

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

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

  528.          }

  529. 	 put_flush_packet(pb);

  530.          pos = url_ftell(pb);

  531. 	

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

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

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

  535. 	 url_fskip(pb, 8);

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

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

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

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

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

  541. 

  542. 	 url_fseek(pb, pos, SEEK_SET);

  543.     }

  544.     return 0;

  545. }

  546. 

  547. static int avi_write_idx1(AVFormatContext *s)

  548. {

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

  550.     AVIContext *avi = s->priv_data;

  551.     offset_t file_size, idx_chunk;

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

  553.     AVCodecContext *stream;

  554.     unsigned char tag[5];

  555. 

  556.     if (!url_is_streamed(pb)) {

  557. 	AVIIentry* ie = 0, *tie;

  558. 	int entry[MAX_STREAMS];

  559. 	int empty, stream_id = -1;

  560. 

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

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

  563. 	do {

  564. 	    empty = 1;

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

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

  567. 		     continue;

  568. 		 

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

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

  571. 		     ie = tie; 

  572. 		     stream_id = i;

  573. 		 }

  574. 		 empty = 0;

  575. 	    }

  576. 	    if (!empty) {

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

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

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

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

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

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

  583. 		entry[stream_id]++;

  584. 	    }

  585. 	} while (!empty);

  586. 	end_tag(pb, idx_chunk);

  587. 

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

  589. 	file_size = url_ftell(pb);

  590.         nb_frames = 0;

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

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

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

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

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

  596.                 if (au_ssize == 0) {

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

  598.                     nb_frames += stream->frame_number;

  599.                 } else {

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

  601.                 }

  602.             }

  603.        }

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

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

  606.            put_le32(pb, nb_frames); 

  607.        }

  608.        url_fseek(pb, file_size, SEEK_SET);

  609.     }

  610.     return 0;

  611. }

  612. 

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

  614. {

  615.     AVIContext *avi = s->priv_data;

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

  617.     unsigned char tag[5];

  618.     unsigned int flags=0;

  619.     const int stream_index= pkt->stream_index;

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

  621.     int size= pkt->size;

  622. 

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

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

  625.         AVPacket empty_packet;

  626. 

  627.         av_init_packet(&empty_packet);

  628.         empty_packet.size= 0;

  629.         empty_packet.data= NULL;

  630.         empty_packet.stream_index= stream_index;

  631.         avi_write_packet(s, &empty_packet);

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

  633.     }

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

  635. 

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

  637.         avi_write_ix(s);

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

  639.         

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

  641. 	    avi_write_idx1(s);

  642. 

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

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

  645.     }

  646.     

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

  648.     if(pkt->flags&PKT_FLAG_KEY)

  649.         flags = 0x10;

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

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

  652.     }

  653. 

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

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

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

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

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

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

  660. 	    if (!idx->cluster)

  661. 	        return -1;

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

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

  664. 		return -1;

  665. 	    idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;

  666. 	}

  667.  	

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

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

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

  671. 	idx->entry++;

  672.     }

  673.     

  674.     put_buffer(pb, tag, 4);

  675.     put_le32(pb, size);

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

  677.     if (size & 1)

  678.         put_byte(pb, 0);

  679. 

  680.     put_flush_packet(pb);

  681.     return 0;

  682. }

  683. 

  684. static int avi_write_trailer(AVFormatContext *s)

  685. {

  686.     AVIContext *avi = s->priv_data;

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

  688.     int res = 0;

  689.     int i, j, n, nb_frames;

  690.     offset_t file_size;

  691. 

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

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

  694.         res = avi_write_idx1(s);

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

  696.     } else {

  697.         avi_write_ix(s);

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

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

  700. 

  701.         file_size = url_ftell(pb);

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

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

  704. 	url_fskip(pb, 16);

  705. 

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

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

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

  709.                  if (nb_frames < stream->frame_number)

  710.                      nb_frames = stream->frame_number;

  711.              } else {

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

  713.                      nb_frames += stream->frame_number;

  714.                 }

  715.             }

  716.         }

  717. 	put_le32(pb, nb_frames);

  718. 	url_fseek(pb, file_size, SEEK_SET);

  719.     }

  720.     put_flush_packet(pb);

  721. 

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

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

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

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

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

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

  728.     }

  729.     

  730.     return res;

  731. }

  732. 

  733. static AVOutputFormat avi_oformat = {

  734.     "avi",

  735.     "avi format",

  736.     "video/x-msvideo",

  737.     "avi",

  738.     sizeof(AVIContext),

  739.     CODEC_ID_MP2,

  740.     CODEC_ID_MPEG4,

  741.     avi_write_header,

  742.     avi_write_packet,

  743.     avi_write_trailer,

  744. };

  745. 

  746. int avienc_init(void)

  747. {

  748.     av_register_output_format(&avi_oformat);

  749.     return 0;

  750. }

  751. #endif //CONFIG_ENCODERS