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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. 

  47.     AVIIndex indexes[MAX_STREAMS];

  48. } AVIContext;

  49. 

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

  51. {

  52.     int cl = ent_id / AVI_INDEX_CLUSTER_SIZE;

  53.     int id = ent_id % AVI_INDEX_CLUSTER_SIZE;

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

  55. }

  56. 

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

  58. {

  59.     put_tag(pb, tag);

  60.     put_le32(pb, 0);

  61.     return url_ftell(pb);

  62. }

  63. 

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

  65. {

  66.     offset_t pos;

  67. 

  68.     pos = url_ftell(pb);

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

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

  71.     url_fseek(pb, pos, SEEK_SET);

  72. }

  73. #endif //CONFIG_ENCODERS

  74. 

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

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

  77. const CodecTag codec_bmp_tags[] = {

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

  79. 

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

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

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

  83. 

  84.     /* added based on MPlayer */

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

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

  87. 

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

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

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

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

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

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

  94. 

  95.     /* added based on MPlayer */

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

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

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

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

  100. 

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

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

  103. 

  104.     /* added based on MPlayer */

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

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

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

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

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

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

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

  112. 

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

  114. 

  115.     /* added based on MPlayer */

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

  117.  

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

  119. 

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

  121. 

  122.     /* added based on MPlayer */

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  164.     { 0, 0 },

  165. };

  166. 

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

  168. {

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

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

  171.             return tags->tag;

  172.         tags++;

  173.     }

  174.     return 0;

  175. }

  176. 

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

  178. {

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

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

  181.             return tags->tag;

  182.         tags++;

  183.     }

  184.     return 0;

  185. }

  186. 

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

  188. {

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

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

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

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

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

  194.             return tags->id;

  195.         tags++;

  196.     }

  197.     return CODEC_ID_NONE;

  198. }

  199. 

  200. unsigned int codec_get_bmp_tag(int id)

  201. {

  202.     return codec_get_tag(codec_bmp_tags, id);

  203. }

  204. 

  205. unsigned int codec_get_wav_tag(int id)

  206. {

  207.     return codec_get_tag(codec_wav_tags, id);

  208. }

  209. 

  210. enum CodecID codec_get_bmp_id(unsigned int tag)

  211. {

  212.     return codec_get_id(codec_bmp_tags, tag);

  213. }

  214. 

  215. enum CodecID codec_get_wav_id(unsigned int tag)

  216. {

  217.     return codec_get_id(codec_wav_tags, tag);

  218. }

  219. 

  220. #ifdef CONFIG_ENCODERS

  221. /* BITMAPINFOHEADER header */

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

  223. {

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

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

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

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

  228.     

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

  230.     /* compression type */

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

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

  233.     put_le32(pb, 0);

  234.     put_le32(pb, 0);

  235.     put_le32(pb, 0);

  236.     put_le32(pb, 0);

  237.     

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

  239. 

  240.     if (enc->extradata_size & 1)

  241.         put_byte(pb, 0);

  242. }

  243. 

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

  245. {

  246.     switch(stream->codec_id) {

  247.     case CODEC_ID_PCM_S16LE:

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

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

  250.         break;

  251.     case CODEC_ID_PCM_U8:

  252.     case CODEC_ID_PCM_ALAW:

  253.     case CODEC_ID_PCM_MULAW:

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

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

  256.         break;

  257.     case CODEC_ID_MP2:

  258.         *au_ssize = 1;

  259.         *au_scale = 1;

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

  261.     case CODEC_ID_MP3:

  262.         *au_ssize = 1;

  263.         *au_scale = 1;

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

  265.     default:

  266.         *au_ssize = 1;

  267.         *au_scale = 1; 

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

  269.         break;

  270.     }

  271. }

  272. 

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

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

  275. {

  276.     offset_t loff;

  277.     int i;

  278.     

  279.     avi->riff_id++;

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

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

  282.     

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

  284.     put_tag(pb, riff_tag);

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

  286.     put_tag(pb, list_tag);

  287.     return loff;

  288. }

  289. 

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

  291.                                         enum CodecType type)

  292. {

  293.     tag[0] = '0';

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

  295.     if (type == CODEC_TYPE_VIDEO) {

  296.         tag[2] = 'd';

  297.         tag[3] = 'c';

  298.     } else {

  299.         tag[2] = 'w';

  300.         tag[3] = 'b';

  301.     }

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

  303.     return tag;

  304. }

  305. 

  306. static int avi_write_header(AVFormatContext *s)

  307. {

  308.     AVIContext *avi = s->priv_data;

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

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

  311.     AVCodecContext *stream, *video_enc;

  312.     offset_t list1, list2, strh, strf;

  313. 

  314.     /* header list */

  315.     avi->riff_id = 0;

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

  317. 

  318.     /* avi header */

  319.     put_tag(pb, "avih");

  320.     put_le32(pb, 14 * 4);

  321.     bitrate = 0;

  322. 

  323.     video_enc = NULL;

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

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

  326.         bitrate += stream->bit_rate;

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

  328.             video_enc = stream;

  329.     }

  330.     

  331.     nb_frames = 0;

  332. 

  333.     if(video_enc){

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

  335.     } else {

  336. 	put_le32(pb, 0);

  337.     }

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

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

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

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

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

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

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

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

  346.     if(video_enc){    

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

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

  349.     } else {

  350. 	put_le32(pb, 0);

  351. 	put_le32(pb, 0);

  352.     }	

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

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

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

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

  357.     

  358.     /* stream list */

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

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

  361.         put_tag(pb, "strl");

  362.     

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

  364. 

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

  366.         if (! stream->codec_tag) {

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

  368.         }

  369. 

  370.         /* stream generic header */

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

  372.         switch(stream->codec_type) {

  373.         case CODEC_TYPE_VIDEO:

  374.             put_tag(pb, "vids");

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

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

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

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

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

  380.             

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

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

  383. 

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

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

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

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

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

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

  390.             put_le16(pb, 0);

  391.             put_le16(pb, 0);

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

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

  394.             break;

  395.         case CODEC_TYPE_AUDIO:

  396.             put_tag(pb, "auds");

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  411.             put_le32(pb, 0);

  412.             put_le32(pb, 0);

  413.             break;

  414.         default:

  415.             av_abort();

  416.         }

  417.         end_tag(pb, strh);

  418. 

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

  420.         switch(stream->codec_type) {

  421.         case CODEC_TYPE_VIDEO:

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

  423.             break;

  424.         case CODEC_TYPE_AUDIO:

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

  426.                 av_free(avi);

  427.                 return -1;

  428.             }

  429.             break;

  430.         default:

  431.             av_abort();

  432.         }

  433.         end_tag(pb, strf);

  434. 	

  435. 	if (!url_is_streamed(pb)) {

  436. 	    unsigned char tag[5];

  437. 	    int j;

  438.     

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

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

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

  442. 	     * for compatibility reasons.

  443. 	     */

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

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

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

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

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

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

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

  451. 	                            /* dwChunkId */

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

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

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

  455. 	         put_le64(pb, 0);

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

  457. 	}

  458. 	

  459.         end_tag(pb, list2);

  460.     }

  461.     

  462.     if (!url_is_streamed(pb)) {

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

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

  465.         put_tag(pb, "odml");

  466.         put_tag(pb, "dmlh");

  467.         put_le32(pb, 248);

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

  469.              put_le32(pb, 0);

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

  471.     }

  472. 

  473.     end_tag(pb, list1);

  474.     

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

  476.     put_tag(pb, "movi");

  477. 

  478.     put_flush_packet(pb);

  479. 

  480.     return 0;

  481. }

  482. 

  483. static int avi_write_ix(AVFormatContext *s)

  484. {

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

  486.     AVIContext *avi = s->priv_data;

  487.     unsigned char tag[5];

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

  489.     int i, j;

  490.     

  491.     if (avi->riff_id > AVI_MASTER_INDEX_SIZE)

  492.         return -1;

  493.     

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

  495. 	 offset_t ix, pos;

  496. 	 

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

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

  499. 	 

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

  501. 	 ix = url_ftell(pb); 

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

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

  504. 	                              /* chunk size */

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

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

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

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

  509. 	                              /* nEntriesInUse */

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

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

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

  513. 

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

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

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

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

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

  519.          }

  520. 	 put_flush_packet(pb);

  521.          pos = url_ftell(pb);

  522. 	

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

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

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

  526. 	 url_fskip(pb, 8);

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

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

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

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

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

  532. 

  533. 	 url_fseek(pb, pos, SEEK_SET);

  534.     }

  535.     return 0;

  536. }

  537. 

  538. static int avi_write_idx1(AVFormatContext *s)

  539. {

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

  541.     AVIContext *avi = s->priv_data;

  542.     offset_t file_size, idx_chunk;

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

  544.     AVCodecContext *stream;

  545.     unsigned char tag[5];

  546. 

  547.     if (!url_is_streamed(pb)) {

  548. 	AVIIentry* ie = 0, *tie;

  549. 	int entry[MAX_STREAMS];

  550. 	int empty, stream_id = -1;

  551. 

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

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

  554. 	do {

  555. 	    empty = 1;

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

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

  558. 		     continue;

  559. 		 

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

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

  562. 		     ie = tie; 

  563. 		     stream_id = i;

  564. 		 }

  565. 		 empty = 0;

  566. 	    }

  567. 	    if (!empty) {

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

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

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

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

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

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

  574. 		entry[stream_id]++;

  575. 	    }

  576. 	} while (!empty);

  577. 	end_tag(pb, idx_chunk);

  578. 

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

  580. 	file_size = url_ftell(pb);

  581.         nb_frames = 0;

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

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

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

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

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

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

  588.                     if (nb_frames < stream->frame_number)

  589.                         nb_frames = stream->frame_number;

  590.                 } else {

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

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

  593.                         nb_frames += stream->frame_number;

  594.                     } else {

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

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

  597.                     }

  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.     AVCodecContext *enc;

  617.     const int stream_index= pkt->stream_index;

  618.     int size= pkt->size;

  619. 

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

  621.         avi_write_ix(s);

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

  623.         

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

  625. 	    avi_write_idx1(s);

  626. 

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

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

  629.     }

  630.     

  631.     enc = &s->streams[stream_index]->codec;

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

  633.     if(pkt->flags&PKT_FLAG_KEY)

  634.         flags = 0x10;

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

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

  637.     }

  638. 

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

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

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

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

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

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

  645. 	    if (!idx->cluster)

  646. 	        return -1;

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

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

  649. 		return -1;

  650. 	    idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;

  651. 	}

  652.  	

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

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

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

  656. 	idx->entry++;

  657.     }

  658.     

  659.     put_buffer(pb, tag, 4);

  660.     put_le32(pb, size);

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

  662.     if (size & 1)

  663.         put_byte(pb, 0);

  664. 

  665.     put_flush_packet(pb);

  666.     return 0;

  667. }

  668. 

  669. static int avi_write_trailer(AVFormatContext *s)

  670. {

  671.     AVIContext *avi = s->priv_data;

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

  673.     int res = 0;

  674.     int i, j, n, nb_frames;

  675.     offset_t file_size;

  676. 

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

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

  679.         res = avi_write_idx1(s);

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

  681.     } else {

  682.         avi_write_ix(s);

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

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

  685. 

  686.         file_size = url_ftell(pb);

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

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

  689. 	url_fskip(pb, 16);

  690. 

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

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

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

  694.                  if (nb_frames < stream->frame_number)

  695.                      nb_frames = stream->frame_number;

  696.              } else {

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

  698.                      nb_frames += stream->frame_number;

  699.                 }

  700.             }

  701.         }

  702. 	put_le32(pb, nb_frames);

  703. 	url_fseek(pb, file_size, SEEK_SET);

  704.     }

  705.     put_flush_packet(pb);

  706. 

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

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

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

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

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

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

  713.     }

  714.     

  715.     return res;

  716. }

  717. 

  718. static AVOutputFormat avi_oformat = {

  719.     "avi",

  720.     "avi format",

  721.     "video/x-msvideo",

  722.     "avi",

  723.     sizeof(AVIContext),

  724.     CODEC_ID_MP2,

  725.     CODEC_ID_MPEG4,

  726.     avi_write_header,

  727.     avi_write_packet,

  728.     avi_write_trailer,

  729. };

  730. 

  731. int avienc_init(void)

  732. {

  733.     av_register_output_format(&avi_oformat);

  734.     return 0;

  735. }

  736. #endif //CONFIG_ENCODERS