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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. 

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

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

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

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

  85. 

  86.     /* added based on MPlayer */

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

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

  89. 

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

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

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

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

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

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

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

  97. 

  98.     /* added based on MPlayer */

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

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

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

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

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

  104. 

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

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

  107. 

  108.     /* added based on MPlayer */

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

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

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

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

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

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

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

  116. 

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

  118. 

  119.     /* added based on MPlayer */

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

  121.  

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

  123. 

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

  125. 

  126.     /* added based on MPlayer */

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

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

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

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

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

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

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

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

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

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

  137.     { CODEC_ID_MPEG1VIDEO, 0x10000001 }, 

  138.     { CODEC_ID_MPEG2VIDEO, 0x10000002 }, 

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  185.     { CODEC_ID_RAWVIDEO, 0 },

  186.     { 0, 0 },

  187. };

  188. 

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

  190. {

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

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

  193.             return tags->tag;

  194.         tags++;

  195.     }

  196.     return 0;

  197. }

  198. 

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

  200. {

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

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

  203.             return tags->tag;

  204.         tags++;

  205.     }

  206.     return 0;

  207. }

  208. 

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

  210. {

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

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

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

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

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

  216.             return tags->id;

  217.         tags++;

  218.     }

  219.     return CODEC_ID_NONE;

  220. }

  221. 

  222. unsigned int codec_get_bmp_tag(int id)

  223. {

  224.     return codec_get_tag(codec_bmp_tags, id);

  225. }

  226. 

  227. unsigned int codec_get_wav_tag(int id)

  228. {

  229.     return codec_get_tag(codec_wav_tags, id);

  230. }

  231. 

  232. enum CodecID codec_get_bmp_id(unsigned int tag)

  233. {

  234.     return codec_get_id(codec_bmp_tags, tag);

  235. }

  236. 

  237. enum CodecID codec_get_wav_id(unsigned int tag)

  238. {

  239.     return codec_get_id(codec_wav_tags, tag);

  240. }

  241. 

  242. #ifdef CONFIG_ENCODERS

  243. /* BITMAPINFOHEADER header */

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

  245. {

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

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

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

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

  250.     

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

  252.     /* compression type */

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

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

  255.     put_le32(pb, 0);

  256.     put_le32(pb, 0);

  257.     put_le32(pb, 0);

  258.     put_le32(pb, 0);

  259.     

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

  261. 

  262.     if (enc->extradata_size & 1)

  263.         put_byte(pb, 0);

  264. }

  265. 

  266. static void parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)

  267. {

  268.     int gcd;

  269. 

  270.     *au_ssize= stream->block_align;

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

  272.         *au_scale=stream->frame_size;

  273.         *au_rate= stream->sample_rate;

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

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

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

  277.     }else{

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

  279.         *au_rate = stream->bit_rate;

  280.     }

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

  282.     *au_scale /= gcd;

  283.     *au_rate /= gcd;

  284. }

  285. 

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

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

  288. {

  289.     offset_t loff;

  290.     int i;

  291.     

  292.     avi->riff_id++;

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

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

  295.     

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

  297.     put_tag(pb, riff_tag);

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

  299.     put_tag(pb, list_tag);

  300.     return loff;

  301. }

  302. 

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

  304.                                         enum CodecType type)

  305. {

  306.     tag[0] = '0';

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

  308.     if (type == CODEC_TYPE_VIDEO) {

  309.         tag[2] = 'd';

  310.         tag[3] = 'c';

  311.     } else {

  312.         tag[2] = 'w';

  313.         tag[3] = 'b';

  314.     }

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

  316.     return tag;

  317. }

  318. 

  319. static int avi_write_header(AVFormatContext *s)

  320. {

  321.     AVIContext *avi = s->priv_data;

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

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

  324.     AVCodecContext *stream, *video_enc;

  325.     offset_t list1, list2, strh, strf;

  326. 

  327.     /* header list */

  328.     avi->riff_id = 0;

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

  330. 

  331.     /* avi header */

  332.     put_tag(pb, "avih");

  333.     put_le32(pb, 14 * 4);

  334.     bitrate = 0;

  335. 

  336.     video_enc = NULL;

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

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

  339.         bitrate += stream->bit_rate;

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

  341.             video_enc = stream;

  342.     }

  343.     

  344.     nb_frames = 0;

  345. 

  346.     if(video_enc){

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

  348.     } else {

  349. 	put_le32(pb, 0);

  350.     }

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

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

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

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

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

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

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

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

  359.     if(video_enc){    

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

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

  362.     } else {

  363. 	put_le32(pb, 0);

  364. 	put_le32(pb, 0);

  365.     }	

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

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

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

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

  370.     

  371.     /* stream list */

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

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

  374.         put_tag(pb, "strl");

  375.     

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

  377. 

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

  379.         if (! stream->codec_tag) {

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

  381.         }

  382. 

  383.         /* stream generic header */

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

  385.         switch(stream->codec_type) {

  386.         case CODEC_TYPE_VIDEO:

  387.             put_tag(pb, "vids");

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

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

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

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

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

  393.             

  394.             put_le32(pb, stream->time_base.num); /* scale */

  395.             put_le32(pb, stream->time_base.den); /* rate */

  396.             av_set_pts_info(s->streams[i], 64, stream->time_base.num, stream->time_base.den);

  397. 

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

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

  400.             put_le32(pb, nb_frames); /* length, XXX: fill later */

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

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

  403.             put_le32(pb, 0); /* sample size */

  404.             put_le16(pb, 0);

  405.             put_le16(pb, 0);

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

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

  408.             break;

  409.         case CODEC_TYPE_AUDIO:

  410.             put_tag(pb, "auds");

  411.             put_le32(pb, 1); /* tag */

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

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

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

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

  416.             parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);

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

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

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

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

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

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

  423.             put_le32(pb, 12 * 1024); /* suggested buffer size */

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

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

  426.             put_le32(pb, 0);

  427.             put_le32(pb, 0);

  428.             break;

  429.         default:

  430.             return -1;

  431.         }

  432.         end_tag(pb, strh);

  433. 

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

  435.         switch(stream->codec_type) {

  436.         case CODEC_TYPE_VIDEO:

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

  438.             break;

  439.         case CODEC_TYPE_AUDIO:

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

  441.                 av_free(avi);

  442.                 return -1;

  443.             }

  444.             break;

  445.         default:

  446.             return -1;

  447.         }

  448.         end_tag(pb, strf);

  449. 	

  450. 	if (!url_is_streamed(pb)) {

  451. 	    unsigned char tag[5];

  452. 	    int j;

  453.     

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

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

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

  457. 	     * for compatibility reasons.

  458. 	     */

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

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

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

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

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

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

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

  466. 	                            /* dwChunkId */

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

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

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

  470. 	         put_le64(pb, 0);

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

  472. 	}

  473. 	

  474.         end_tag(pb, list2);

  475.     }

  476.     

  477.     if (!url_is_streamed(pb)) {

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

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

  480.         put_tag(pb, "odml");

  481.         put_tag(pb, "dmlh");

  482.         put_le32(pb, 248);

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

  484.              put_le32(pb, 0);

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

  486.     }

  487. 

  488.     end_tag(pb, list1);

  489.     

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

  491.     put_tag(pb, "movi");

  492. 

  493.     put_flush_packet(pb);

  494. 

  495.     return 0;

  496. }

  497. 

  498. static int avi_write_ix(AVFormatContext *s)

  499. {

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

  501.     AVIContext *avi = s->priv_data;

  502.     unsigned char tag[5];

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

  504.     int i, j;

  505.     

  506.     if (avi->riff_id > AVI_MASTER_INDEX_SIZE)

  507.         return -1;

  508.     

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

  510. 	 offset_t ix, pos;

  511. 	 

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

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

  514. 	 

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

  516. 	 ix = url_ftell(pb); 

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

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

  519. 	                              /* chunk size */

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

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

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

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

  524. 	                              /* nEntriesInUse */

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

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

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

  528. 

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

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

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

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

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

  534.          }

  535. 	 put_flush_packet(pb);

  536.          pos = url_ftell(pb);

  537. 	

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

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

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

  541. 	 url_fskip(pb, 8);

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

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

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

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

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

  547. 

  548. 	 url_fseek(pb, pos, SEEK_SET);

  549.     }

  550.     return 0;

  551. }

  552. 

  553. static int avi_write_idx1(AVFormatContext *s)

  554. {

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

  556.     AVIContext *avi = s->priv_data;

  557.     offset_t file_size, idx_chunk;

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

  559.     AVCodecContext *stream;

  560.     unsigned char tag[5];

  561. 

  562.     if (!url_is_streamed(pb)) {

  563. 	AVIIentry* ie = 0, *tie;

  564. 	int entry[MAX_STREAMS];

  565. 	int empty, stream_id = -1;

  566. 

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

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

  569. 	do {

  570. 	    empty = 1;

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

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

  573. 		     continue;

  574. 		 

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

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

  577. 		     ie = tie; 

  578. 		     stream_id = i;

  579. 		 }

  580. 		 empty = 0;

  581. 	    }

  582. 	    if (!empty) {

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

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

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

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

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

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

  589. 		entry[stream_id]++;

  590. 	    }

  591. 	} while (!empty);

  592. 	end_tag(pb, idx_chunk);

  593. 

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

  595. 	file_size = url_ftell(pb);

  596.         nb_frames = 0;

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

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

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

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

  601.                 parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);

  602.                 if (au_ssize == 0) {

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

  604.                     nb_frames += stream->frame_number;

  605.                 } else {

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

  607.                 }

  608.             }

  609.        }

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

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

  612.            put_le32(pb, nb_frames); 

  613.        }

  614.        url_fseek(pb, file_size, SEEK_SET);

  615.     }

  616.     return 0;

  617. }

  618. 

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

  620. {

  621.     AVIContext *avi = s->priv_data;

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

  623.     unsigned char tag[5];

  624.     unsigned int flags=0;

  625.     const int stream_index= pkt->stream_index;

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

  627.     int size= pkt->size;

  628. 

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

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

  631.         AVPacket empty_packet;

  632. 

  633.         av_init_packet(&empty_packet);

  634.         empty_packet.size= 0;

  635.         empty_packet.data= NULL;

  636.         empty_packet.stream_index= stream_index;

  637.         avi_write_packet(s, &empty_packet);

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

  639.     }

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

  641. 

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

  643.         avi_write_ix(s);

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

  645.         

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

  647. 	    avi_write_idx1(s);

  648. 

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

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

  651.     }

  652.     

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

  654.     if(pkt->flags&PKT_FLAG_KEY)

  655.         flags = 0x10;

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

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

  658.     }

  659. 

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

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

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

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

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

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

  666. 	    if (!idx->cluster)

  667. 	        return -1;

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

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

  670. 		return -1;

  671. 	    idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;

  672. 	}

  673.  	

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

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

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

  677. 	idx->entry++;

  678.     }

  679.     

  680.     put_buffer(pb, tag, 4);

  681.     put_le32(pb, size);

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

  683.     if (size & 1)

  684.         put_byte(pb, 0);

  685. 

  686.     put_flush_packet(pb);

  687.     return 0;

  688. }

  689. 

  690. static int avi_write_trailer(AVFormatContext *s)

  691. {

  692.     AVIContext *avi = s->priv_data;

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

  694.     int res = 0;

  695.     int i, j, n, nb_frames;

  696.     offset_t file_size;

  697. 

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

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

  700.         res = avi_write_idx1(s);

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

  702.     } else {

  703.         avi_write_ix(s);

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

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

  706. 

  707.         file_size = url_ftell(pb);

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

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

  710. 	url_fskip(pb, 16);

  711. 

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

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

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

  715.                  if (nb_frames < stream->frame_number)

  716.                      nb_frames = stream->frame_number;

  717.              } else {

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

  719.                      nb_frames += stream->frame_number;

  720.                 }

  721.             }

  722.         }

  723. 	put_le32(pb, nb_frames);

  724. 	url_fseek(pb, file_size, SEEK_SET);

  725.     }

  726.     put_flush_packet(pb);

  727. 

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

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

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

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

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

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

  734.     }

  735.     

  736.     return res;

  737. }

  738. 

  739. static AVOutputFormat avi_oformat = {

  740.     "avi",

  741.     "avi format",

  742.     "video/x-msvideo",

  743.     "avi",

  744.     sizeof(AVIContext),

  745.     CODEC_ID_MP2,

  746.     CODEC_ID_MPEG4,

  747.     avi_write_header,

  748.     avi_write_packet,

  749.     avi_write_trailer,

  750. };

  751. 

  752. int avienc_init(void)

  753. {

  754.     av_register_output_format(&avi_oformat);

  755.     return 0;

  756. }

  757. #endif //CONFIG_ENCODERS