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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_QPEG, MKTAG('Q', 'P', 'E', 'G') },

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

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

  176.     { CODEC_ID_RAWVIDEO, 0 },

  177.     { 0, 0 },

  178. };

  179. 

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

  181. {

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

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

  184.             return tags->tag;

  185.         tags++;

  186.     }

  187.     return 0;

  188. }

  189. 

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

  191. {

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

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

  194.             return tags->tag;

  195.         tags++;

  196.     }

  197.     return 0;

  198. }

  199. 

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

  201. {

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

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

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

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

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

  207.             return tags->id;

  208.         tags++;

  209.     }

  210.     return CODEC_ID_NONE;

  211. }

  212. 

  213. unsigned int codec_get_bmp_tag(int id)

  214. {

  215.     return codec_get_tag(codec_bmp_tags, id);

  216. }

  217. 

  218. unsigned int codec_get_wav_tag(int id)

  219. {

  220.     return codec_get_tag(codec_wav_tags, id);

  221. }

  222. 

  223. enum CodecID codec_get_bmp_id(unsigned int tag)

  224. {

  225.     return codec_get_id(codec_bmp_tags, tag);

  226. }

  227. 

  228. enum CodecID codec_get_wav_id(unsigned int tag)

  229. {

  230.     return codec_get_id(codec_wav_tags, tag);

  231. }

  232. 

  233. #ifdef CONFIG_ENCODERS

  234. /* BITMAPINFOHEADER header */

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

  236. {

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

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

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

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

  241.     

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

  243.     /* compression type */

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

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

  246.     put_le32(pb, 0);

  247.     put_le32(pb, 0);

  248.     put_le32(pb, 0);

  249.     put_le32(pb, 0);

  250.     

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

  252. 

  253.     if (enc->extradata_size & 1)

  254.         put_byte(pb, 0);

  255. }

  256. 

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

  258. {

  259.     int gcd;

  260. 

  261.     *au_ssize= stream->block_align;

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

  263.         *au_scale=stream->frame_size;

  264.         *au_rate= stream->sample_rate;

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

  266.         *au_scale= stream->frame_rate_base;

  267.         *au_rate = stream->frame_rate;

  268.     }else{

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

  270.         *au_rate = stream->bit_rate;

  271.     }

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

  273.     *au_scale /= gcd;

  274.     *au_rate /= gcd;

  275. }

  276. 

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

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

  279. {

  280.     offset_t loff;

  281.     int i;

  282.     

  283.     avi->riff_id++;

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

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

  286.     

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

  288.     put_tag(pb, riff_tag);

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

  290.     put_tag(pb, list_tag);

  291.     return loff;

  292. }

  293. 

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

  295.                                         enum CodecType type)

  296. {

  297.     tag[0] = '0';

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

  299.     if (type == CODEC_TYPE_VIDEO) {

  300.         tag[2] = 'd';

  301.         tag[3] = 'c';

  302.     } else {

  303.         tag[2] = 'w';

  304.         tag[3] = 'b';

  305.     }

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

  307.     return tag;

  308. }

  309. 

  310. static int avi_write_header(AVFormatContext *s)

  311. {

  312.     AVIContext *avi = s->priv_data;

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

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

  315.     AVCodecContext *stream, *video_enc;

  316.     offset_t list1, list2, strh, strf;

  317. 

  318.     /* header list */

  319.     avi->riff_id = 0;

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

  321. 

  322.     /* avi header */

  323.     put_tag(pb, "avih");

  324.     put_le32(pb, 14 * 4);

  325.     bitrate = 0;

  326. 

  327.     video_enc = NULL;

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

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

  330.         bitrate += stream->bit_rate;

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

  332.             video_enc = stream;

  333.     }

  334.     

  335.     nb_frames = 0;

  336. 

  337.     if(video_enc){

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

  339.     } else {

  340. 	put_le32(pb, 0);

  341.     }

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

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

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

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

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

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

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

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

  350.     if(video_enc){    

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

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

  353.     } else {

  354. 	put_le32(pb, 0);

  355. 	put_le32(pb, 0);

  356.     }	

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

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

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

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

  361.     

  362.     /* stream list */

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

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

  365.         put_tag(pb, "strl");

  366.     

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

  368. 

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

  370.         if (! stream->codec_tag) {

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

  372.         }

  373. 

  374.         /* stream generic header */

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

  376.         switch(stream->codec_type) {

  377.         case CODEC_TYPE_VIDEO:

  378.             put_tag(pb, "vids");

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

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

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

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

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

  384.             

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

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

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

  388. 

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

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

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

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

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

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

  395.             put_le16(pb, 0);

  396.             put_le16(pb, 0);

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

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

  399.             break;

  400.         case CODEC_TYPE_AUDIO:

  401.             put_tag(pb, "auds");

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  417.             put_le32(pb, 0);

  418.             put_le32(pb, 0);

  419.             break;

  420.         default:

  421.             return -1;

  422.         }

  423.         end_tag(pb, strh);

  424. 

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

  426.         switch(stream->codec_type) {

  427.         case CODEC_TYPE_VIDEO:

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

  429.             break;

  430.         case CODEC_TYPE_AUDIO:

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

  432.                 av_free(avi);

  433.                 return -1;

  434.             }

  435.             break;

  436.         default:

  437.             return -1;

  438.         }

  439.         end_tag(pb, strf);

  440. 	

  441. 	if (!url_is_streamed(pb)) {

  442. 	    unsigned char tag[5];

  443. 	    int j;

  444.     

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

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

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

  448. 	     * for compatibility reasons.

  449. 	     */

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

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

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

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

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

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

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

  457. 	                            /* dwChunkId */

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

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

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

  461. 	         put_le64(pb, 0);

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

  463. 	}

  464. 	

  465.         end_tag(pb, list2);

  466.     }

  467.     

  468.     if (!url_is_streamed(pb)) {

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

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

  471.         put_tag(pb, "odml");

  472.         put_tag(pb, "dmlh");

  473.         put_le32(pb, 248);

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

  475.              put_le32(pb, 0);

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

  477.     }

  478. 

  479.     end_tag(pb, list1);

  480.     

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

  482.     put_tag(pb, "movi");

  483. 

  484.     put_flush_packet(pb);

  485. 

  486.     return 0;

  487. }

  488. 

  489. static int avi_write_ix(AVFormatContext *s)

  490. {

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

  492.     AVIContext *avi = s->priv_data;

  493.     unsigned char tag[5];

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

  495.     int i, j;

  496.     

  497.     if (avi->riff_id > AVI_MASTER_INDEX_SIZE)

  498.         return -1;

  499.     

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

  501. 	 offset_t ix, pos;

  502. 	 

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

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

  505. 	 

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

  507. 	 ix = url_ftell(pb); 

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

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

  510. 	                              /* chunk size */

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

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

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

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

  515. 	                              /* nEntriesInUse */

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

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

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

  519. 

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

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

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

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

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

  525.          }

  526. 	 put_flush_packet(pb);

  527.          pos = url_ftell(pb);

  528. 	

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

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

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

  532. 	 url_fskip(pb, 8);

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

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

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

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

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

  538. 

  539. 	 url_fseek(pb, pos, SEEK_SET);

  540.     }

  541.     return 0;

  542. }

  543. 

  544. static int avi_write_idx1(AVFormatContext *s)

  545. {

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

  547.     AVIContext *avi = s->priv_data;

  548.     offset_t file_size, idx_chunk;

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

  550.     AVCodecContext *stream;

  551.     unsigned char tag[5];

  552. 

  553.     if (!url_is_streamed(pb)) {

  554. 	AVIIentry* ie = 0, *tie;

  555. 	int entry[MAX_STREAMS];

  556. 	int empty, stream_id = -1;

  557. 

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

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

  560. 	do {

  561. 	    empty = 1;

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

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

  564. 		     continue;

  565. 		 

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

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

  568. 		     ie = tie; 

  569. 		     stream_id = i;

  570. 		 }

  571. 		 empty = 0;

  572. 	    }

  573. 	    if (!empty) {

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

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

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

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

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

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

  580. 		entry[stream_id]++;

  581. 	    }

  582. 	} while (!empty);

  583. 	end_tag(pb, idx_chunk);

  584. 

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

  586. 	file_size = url_ftell(pb);

  587.         nb_frames = 0;

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

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

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

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

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

  593.                 if (au_ssize == 0) {

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

  595.                     nb_frames += stream->frame_number;

  596.                 } else {

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

  598.                 }

  599.             }

  600.        }

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

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

  603.            put_le32(pb, nb_frames); 

  604.        }

  605.        url_fseek(pb, file_size, SEEK_SET);

  606.     }

  607.     return 0;

  608. }

  609. 

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

  611. {

  612.     AVIContext *avi = s->priv_data;

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

  614.     unsigned char tag[5];

  615.     unsigned int flags=0;

  616.     const int stream_index= pkt->stream_index;

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

  618.     int size= pkt->size;

  619. 

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

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

  622.         AVPacket empty_packet;

  623. 

  624.         av_init_packet(&empty_packet);

  625.         empty_packet.size= 0;

  626.         empty_packet.data= NULL;

  627.         empty_packet.stream_index= stream_index;

  628.         avi_write_packet(s, &empty_packet);

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

  630.     }

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

  632. 

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

  634.         avi_write_ix(s);

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

  636.         

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

  638. 	    avi_write_idx1(s);

  639. 

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

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

  642.     }

  643.     

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

  645.     if(pkt->flags&PKT_FLAG_KEY)

  646.         flags = 0x10;

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

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

  649.     }

  650. 

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

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

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

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

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

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

  657. 	    if (!idx->cluster)

  658. 	        return -1;

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

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

  661. 		return -1;

  662. 	    idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;

  663. 	}

  664.  	

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

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

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

  668. 	idx->entry++;

  669.     }

  670.     

  671.     put_buffer(pb, tag, 4);

  672.     put_le32(pb, size);

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

  674.     if (size & 1)

  675.         put_byte(pb, 0);

  676. 

  677.     put_flush_packet(pb);

  678.     return 0;

  679. }

  680. 

  681. static int avi_write_trailer(AVFormatContext *s)

  682. {

  683.     AVIContext *avi = s->priv_data;

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

  685.     int res = 0;

  686.     int i, j, n, nb_frames;

  687.     offset_t file_size;

  688. 

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

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

  691.         res = avi_write_idx1(s);

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

  693.     } else {

  694.         avi_write_ix(s);

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

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

  697. 

  698.         file_size = url_ftell(pb);

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

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

  701. 	url_fskip(pb, 16);

  702. 

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

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

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

  706.                  if (nb_frames < stream->frame_number)

  707.                      nb_frames = stream->frame_number;

  708.              } else {

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

  710.                      nb_frames += stream->frame_number;

  711.                 }

  712.             }

  713.         }

  714. 	put_le32(pb, nb_frames);

  715. 	url_fseek(pb, file_size, SEEK_SET);

  716.     }

  717.     put_flush_packet(pb);

  718. 

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

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

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

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

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

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

  725.     }

  726.     

  727.     return res;

  728. }

  729. 

  730. static AVOutputFormat avi_oformat = {

  731.     "avi",

  732.     "avi format",

  733.     "video/x-msvideo",

  734.     "avi",

  735.     sizeof(AVIContext),

  736.     CODEC_ID_MP2,

  737.     CODEC_ID_MPEG4,

  738.     avi_write_header,

  739.     avi_write_packet,

  740.     avi_write_trailer,

  741. };

  742. 

  743. int avienc_init(void)

  744. {

  745.     av_register_output_format(&avi_oformat);

  746.     return 0;

  747. }

  748. #endif //CONFIG_ENCODERS