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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('D', 'I', 'V', 'X'), .invalid_asf = 1 },

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

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

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

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

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

  96. 

  97.     /* added based on MPlayer */

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

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

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

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

  102. 

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

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

  105. 

  106.     /* added based on MPlayer */

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

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

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

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

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

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

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

  114. 

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

  116. 

  117.     /* added based on MPlayer */

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

  119.  

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

  121. 

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

  123. 

  124.     /* added based on MPlayer */

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

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

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

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

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

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

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

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

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

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

  135.     { CODEC_ID_MPEG1VIDEO, 0x10000001 }, 

  136.     { CODEC_ID_MPEG2VIDEO, 0x10000002 }, 

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  173.     { CODEC_ID_RAWVIDEO, 0 },

  174.     { 0, 0 },

  175. };

  176. 

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

  178. {

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

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

  181.             return tags->tag;

  182.         tags++;

  183.     }

  184.     return 0;

  185. }

  186. 

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

  188. {

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

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

  191.             return tags->tag;

  192.         tags++;

  193.     }

  194.     return 0;

  195. }

  196. 

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

  198. {

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

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

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

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

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

  204.             return tags->id;

  205.         tags++;

  206.     }

  207.     return CODEC_ID_NONE;

  208. }

  209. 

  210. unsigned int codec_get_bmp_tag(int id)

  211. {

  212.     return codec_get_tag(codec_bmp_tags, id);

  213. }

  214. 

  215. unsigned int codec_get_wav_tag(int id)

  216. {

  217.     return codec_get_tag(codec_wav_tags, id);

  218. }

  219. 

  220. enum CodecID codec_get_bmp_id(unsigned int tag)

  221. {

  222.     return codec_get_id(codec_bmp_tags, tag);

  223. }

  224. 

  225. enum CodecID codec_get_wav_id(unsigned int tag)

  226. {

  227.     return codec_get_id(codec_wav_tags, tag);

  228. }

  229. 

  230. #ifdef CONFIG_ENCODERS

  231. /* BITMAPINFOHEADER header */

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

  233. {

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

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

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

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

  238.     

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

  240.     /* compression type */

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

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

  243.     put_le32(pb, 0);

  244.     put_le32(pb, 0);

  245.     put_le32(pb, 0);

  246.     put_le32(pb, 0);

  247.     

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

  249. 

  250.     if (enc->extradata_size & 1)

  251.         put_byte(pb, 0);

  252. }

  253. 

  254. static void parse_specific_params(AVCodecContext *stream, int *au_byterate, int *au_ssize, int *au_scale)

  255. {

  256.     switch(stream->codec_id) {

  257.     case CODEC_ID_PCM_S16LE:

  258.        *au_scale = *au_ssize = 2*stream->channels;

  259.        *au_byterate = *au_ssize * stream->sample_rate;

  260.         break;

  261.     case CODEC_ID_PCM_U8:

  262.     case CODEC_ID_PCM_ALAW:

  263.     case CODEC_ID_PCM_MULAW:

  264.         *au_scale = *au_ssize = stream->channels;

  265.         *au_byterate = *au_ssize * stream->sample_rate;

  266.         break;

  267.     case CODEC_ID_MP2:

  268.         *au_ssize = 1;

  269.         *au_scale = 1;

  270.         *au_byterate = stream->bit_rate / 8;

  271.     case CODEC_ID_MP3:

  272.         *au_ssize = 1;

  273.         *au_scale = 1;

  274.         *au_byterate = stream->bit_rate / 8;    

  275.     default:

  276.         *au_ssize = 1;

  277.         *au_scale = 1; 

  278.         *au_byterate = stream->bit_rate / 8;

  279.         break;

  280.     }

  281. }

  282. 

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

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

  285. {

  286.     offset_t loff;

  287.     int i;

  288.     

  289.     avi->riff_id++;

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

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

  292.     

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

  294.     put_tag(pb, riff_tag);

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

  296.     put_tag(pb, list_tag);

  297.     return loff;

  298. }

  299. 

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

  301.                                         enum CodecType type)

  302. {

  303.     tag[0] = '0';

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

  305.     if (type == CODEC_TYPE_VIDEO) {

  306.         tag[2] = 'd';

  307.         tag[3] = 'c';

  308.     } else {

  309.         tag[2] = 'w';

  310.         tag[3] = 'b';

  311.     }

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

  313.     return tag;

  314. }

  315. 

  316. static int avi_write_header(AVFormatContext *s)

  317. {

  318.     AVIContext *avi = s->priv_data;

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

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

  321.     AVCodecContext *stream, *video_enc;

  322.     offset_t list1, list2, strh, strf;

  323. 

  324.     /* header list */

  325.     avi->riff_id = 0;

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

  327. 

  328.     /* avi header */

  329.     put_tag(pb, "avih");

  330.     put_le32(pb, 14 * 4);

  331.     bitrate = 0;

  332. 

  333.     video_enc = NULL;

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

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

  336.         bitrate += stream->bit_rate;

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

  338.             video_enc = stream;

  339.     }

  340.     

  341.     nb_frames = 0;

  342. 

  343.     if(video_enc){

  344.         put_le32(pb, (uint32_t)(int64_t_C(1000000) * video_enc->frame_rate_base / video_enc->frame_rate));

  345.     } else {

  346. 	put_le32(pb, 0);

  347.     }

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

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

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

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

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

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

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

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

  356.     if(video_enc){    

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

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

  359.     } else {

  360. 	put_le32(pb, 0);

  361. 	put_le32(pb, 0);

  362.     }	

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

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

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

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

  367.     

  368.     /* stream list */

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

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

  371.         put_tag(pb, "strl");

  372.     

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

  374. 

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

  376.         if (! stream->codec_tag) {

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

  378.         }

  379. 

  380.         /* stream generic header */

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

  382.         switch(stream->codec_type) {

  383.         case CODEC_TYPE_VIDEO:

  384.             put_tag(pb, "vids");

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

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

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

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

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

  390.             

  391.             put_le32(pb, stream->frame_rate_base); /* scale */

  392.             put_le32(pb, stream->frame_rate); /* rate */

  393.             av_set_pts_info(s->streams[i], 64, stream->frame_rate_base, stream->frame_rate);

  394. 

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

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

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

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

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

  400.             put_le32(pb, stream->width * stream->height * 3); /* sample size */

  401.             put_le16(pb, 0);

  402.             put_le16(pb, 0);

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

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

  405.             break;

  406.         case CODEC_TYPE_AUDIO:

  407.             put_tag(pb, "auds");

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  423.             put_le32(pb, 0);

  424.             put_le32(pb, 0);

  425.             break;

  426.         default:

  427.             return -1;

  428.         }

  429.         end_tag(pb, strh);

  430. 

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

  432.         switch(stream->codec_type) {

  433.         case CODEC_TYPE_VIDEO:

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

  435.             break;

  436.         case CODEC_TYPE_AUDIO:

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

  438.                 av_free(avi);

  439.                 return -1;

  440.             }

  441.             break;

  442.         default:

  443.             return -1;

  444.         }

  445.         end_tag(pb, strf);

  446. 	

  447. 	if (!url_is_streamed(pb)) {

  448. 	    unsigned char tag[5];

  449. 	    int j;

  450.     

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

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

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

  454. 	     * for compatibility reasons.

  455. 	     */

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

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

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

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

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

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

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

  463. 	                            /* dwChunkId */

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

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

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

  467. 	         put_le64(pb, 0);

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

  469. 	}

  470. 	

  471.         end_tag(pb, list2);

  472.     }

  473.     

  474.     if (!url_is_streamed(pb)) {

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

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

  477.         put_tag(pb, "odml");

  478.         put_tag(pb, "dmlh");

  479.         put_le32(pb, 248);

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

  481.              put_le32(pb, 0);

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

  483.     }

  484. 

  485.     end_tag(pb, list1);

  486.     

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

  488.     put_tag(pb, "movi");

  489. 

  490.     put_flush_packet(pb);

  491. 

  492.     return 0;

  493. }

  494. 

  495. static int avi_write_ix(AVFormatContext *s)

  496. {

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

  498.     AVIContext *avi = s->priv_data;

  499.     unsigned char tag[5];

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

  501.     int i, j;

  502.     

  503.     if (avi->riff_id > AVI_MASTER_INDEX_SIZE)

  504.         return -1;

  505.     

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

  507. 	 offset_t ix, pos;

  508. 	 

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

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

  511. 	 

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

  513. 	 ix = url_ftell(pb); 

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

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

  516. 	                              /* chunk size */

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

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

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

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

  521. 	                              /* nEntriesInUse */

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

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

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

  525. 

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

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

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

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

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

  531.          }

  532. 	 put_flush_packet(pb);

  533.          pos = url_ftell(pb);

  534. 	

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

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

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

  538. 	 url_fskip(pb, 8);

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

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

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

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

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

  544. 

  545. 	 url_fseek(pb, pos, SEEK_SET);

  546.     }

  547.     return 0;

  548. }

  549. 

  550. static int avi_write_idx1(AVFormatContext *s)

  551. {

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

  553.     AVIContext *avi = s->priv_data;

  554.     offset_t file_size, idx_chunk;

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

  556.     AVCodecContext *stream;

  557.     unsigned char tag[5];

  558. 

  559.     if (!url_is_streamed(pb)) {

  560. 	AVIIentry* ie = 0, *tie;

  561. 	int entry[MAX_STREAMS];

  562. 	int empty, stream_id = -1;

  563. 

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

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

  566. 	do {

  567. 	    empty = 1;

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

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

  570. 		     continue;

  571. 		 

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

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

  574. 		     ie = tie; 

  575. 		     stream_id = i;

  576. 		 }

  577. 		 empty = 0;

  578. 	    }

  579. 	    if (!empty) {

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

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

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

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

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

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

  586. 		entry[stream_id]++;

  587. 	    }

  588. 	} while (!empty);

  589. 	end_tag(pb, idx_chunk);

  590. 

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

  592. 	file_size = url_ftell(pb);

  593.         nb_frames = 0;

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

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

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

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

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

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

  600.                     if (nb_frames < stream->frame_number)

  601.                         nb_frames = stream->frame_number;

  602.                 } else {

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

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

  605.                         nb_frames += stream->frame_number;

  606.                     } else {

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

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

  609.                     }

  610.                 }

  611.             }

  612.        }

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

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

  615.            put_le32(pb, nb_frames); 

  616.        }

  617.        url_fseek(pb, file_size, SEEK_SET);

  618.     }

  619.     return 0;

  620. }

  621. 

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

  623. {

  624.     AVIContext *avi = s->priv_data;

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

  626.     unsigned char tag[5];

  627.     unsigned int flags=0;

  628.     const int stream_index= pkt->stream_index;

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

  630.     int size= pkt->size;

  631. 

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

  633.     while(enc->codec_type == CODEC_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE && pkt->dts > avi->packet_count[stream_index]){

  634.         AVPacket empty_packet;

  635. 

  636.         av_init_packet(&empty_packet);

  637.         empty_packet.size= 0;

  638.         empty_packet.data= NULL;

  639.         empty_packet.stream_index= stream_index;

  640.         avi_write_packet(s, &empty_packet);

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

  642.     }

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

  644. 

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

  646.         avi_write_ix(s);

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

  648.         

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

  650. 	    avi_write_idx1(s);

  651. 

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

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

  654.     }

  655.     

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

  657.     if(pkt->flags&PKT_FLAG_KEY)

  658.         flags = 0x10;

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

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

  661.     }

  662. 

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

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

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

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

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

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

  669. 	    if (!idx->cluster)

  670. 	        return -1;

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

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

  673. 		return -1;

  674. 	    idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;

  675. 	}

  676.  	

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

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

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

  680. 	idx->entry++;

  681.     }

  682.     

  683.     put_buffer(pb, tag, 4);

  684.     put_le32(pb, size);

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

  686.     if (size & 1)

  687.         put_byte(pb, 0);

  688. 

  689.     put_flush_packet(pb);

  690.     return 0;

  691. }

  692. 

  693. static int avi_write_trailer(AVFormatContext *s)

  694. {

  695.     AVIContext *avi = s->priv_data;

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

  697.     int res = 0;

  698.     int i, j, n, nb_frames;

  699.     offset_t file_size;

  700. 

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

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

  703.         res = avi_write_idx1(s);

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

  705.     } else {

  706.         avi_write_ix(s);

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

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

  709. 

  710.         file_size = url_ftell(pb);

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

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

  713. 	url_fskip(pb, 16);

  714. 

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

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

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

  718.                  if (nb_frames < stream->frame_number)

  719.                      nb_frames = stream->frame_number;

  720.              } else {

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

  722.                      nb_frames += stream->frame_number;

  723.                 }

  724.             }

  725.         }

  726. 	put_le32(pb, nb_frames);

  727. 	url_fseek(pb, file_size, SEEK_SET);

  728.     }

  729.     put_flush_packet(pb);

  730. 

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

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

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

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

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

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

  737.     }

  738.     

  739.     return res;

  740. }

  741. 

  742. static AVOutputFormat avi_oformat = {

  743.     "avi",

  744.     "avi format",

  745.     "video/x-msvideo",

  746.     "avi",

  747.     sizeof(AVIContext),

  748.     CODEC_ID_MP2,

  749.     CODEC_ID_MPEG4,

  750.     avi_write_header,

  751.     avi_write_packet,

  752.     avi_write_trailer,

  753. };

  754. 

  755. int avienc_init(void)

  756. {

  757.     av_register_output_format(&avi_oformat);

  758.     return 0;

  759. }

  760. #endif //CONFIG_ENCODERS