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ffmpeg / libavformat / avienc.c @ be3564ed

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1
/*
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 * AVI encoder.
3
 * Copyright (c) 2000 Fabrice Bellard.
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 *
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 * This library is free software; you can redistribute it and/or
6
 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13
 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 */
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#include "avformat.h"
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#include "avi.h"
21

    
22
/*
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 * TODO: 
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 *  - fill all fields if non streamed (nb_frames for example)
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 */
26

    
27
typedef struct AVIIentry {
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    unsigned int flags, pos, len;
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} AVIIentry;
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#define AVI_INDEX_CLUSTER_SIZE 16384
32

    
33
typedef struct AVIIndex {
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    offset_t    indx_start;
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    int         entry;
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    int         ents_allocated;
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    AVIIentry** cluster;
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} AVIIndex;
39

    
40
typedef struct {
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    offset_t riff_start, movi_list, odml_list;
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    offset_t frames_hdr_all, frames_hdr_strm[MAX_STREAMS];
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    int audio_strm_length[MAX_STREAMS];
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    int riff_id;
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    AVIIndex indexes[MAX_STREAMS];
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} AVIContext;
48

    
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static inline AVIIentry* avi_get_ientry(AVIIndex* idx, int ent_id) 
50
{
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    int cl = ent_id / AVI_INDEX_CLUSTER_SIZE;
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    int id = ent_id % AVI_INDEX_CLUSTER_SIZE;
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    return &idx->cluster[cl][id];
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}
55

    
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offset_t start_tag(ByteIOContext *pb, const char *tag)
57
{
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    put_tag(pb, tag);
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    put_le32(pb, 0);
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    return url_ftell(pb);
61
}
62

    
63
void end_tag(ByteIOContext *pb, offset_t start)
64
{
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    offset_t pos;
66

    
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    pos = url_ftell(pb);
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    url_fseek(pb, start - 4, SEEK_SET);
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    put_le32(pb, (uint32_t)(pos - start));
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    url_fseek(pb, pos, SEEK_SET);
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}
72

    
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/* Note: when encoding, the first matching tag is used, so order is
74
   important if multiple tags possible for a given codec. */
75
const CodecTag codec_bmp_tags[] = {
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    { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
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    { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
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    { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
79

    
80
    /* added based on MPlayer */
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    { CODEC_ID_H263I, MKTAG('i', '2', '6', '3') },
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    { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
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    { CODEC_ID_H263P, MKTAG('h', '2', '6', '3') },
84
    { CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },
85

    
86
    { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X'), .invalid_asf = 1 },
87
    { CODEC_ID_MPEG4, MKTAG('d', 'i', 'v', 'x'), .invalid_asf = 1 },
88
    { CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0'), .invalid_asf = 1 },
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    { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D'), .invalid_asf = 1 },
90
    { CODEC_ID_MPEG4, MKTAG('x', 'v', 'i', 'd'), .invalid_asf = 1 },
91
    { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 's'), .invalid_asf = 1 },
92
    { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
93
    { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
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    { 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('d', 'i', 'v', '1') },
100
    { CODEC_ID_MPEG4, MKTAG('X', 'v', 'i', 'D') },
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    { CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
102
    { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
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    { CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
104

    
105
    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3'), .invalid_asf = 1 }, /* default signature when using MSMPEG4 */
106
    { CODEC_ID_MSMPEG4V3, MKTAG('d', 'i', 'v', '3'), .invalid_asf = 1 },
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    { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') }, 
108

    
109
    /* added based on MPlayer */
110
    { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') }, 
111
    { CODEC_ID_MSMPEG4V3, MKTAG('m', 'p', 'g', '3') }, 
112
    { CODEC_ID_MSMPEG4V3, MKTAG('m', 'p', '4', '3') }, 
113
    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') }, 
114
    { CODEC_ID_MSMPEG4V3, MKTAG('d', 'i', 'v', '5') }, 
115
    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') }, 
116
    { CODEC_ID_MSMPEG4V3, MKTAG('d', 'i', 'v', '6') }, 
117
    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') }, 
118
    { CODEC_ID_MSMPEG4V3, MKTAG('d', 'i', 'v', '4') }, 
119
    { CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') }, 
120
    { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') }, 
121
    { CODEC_ID_MSMPEG4V3, MKTAG('c', 'o', 'l', '1') }, 
122
    { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') }, 
123
    { CODEC_ID_MSMPEG4V3, MKTAG('c', 'o', 'l', '0') }, 
124

    
125
    { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') }, 
126

    
127
    /* added based on MPlayer */
128
    { CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
129
    { CODEC_ID_MSMPEG4V2, MKTAG('d', 'i', 'v', '2') },
130
    { CODEC_ID_MSMPEG4V2, MKTAG('m', 'p', '4', '2') },
131
 
132
    { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') }, 
133

    
134
    /* added based on MPlayer */
135
    { CODEC_ID_MSMPEG4V1, MKTAG('D', 'I', 'V', '4') }, 
136
    { CODEC_ID_MSMPEG4V1, MKTAG('d', 'i', 'v', '4') }, 
137
    { CODEC_ID_MSMPEG4V1, MKTAG('m', 'p', 'g', '4') }, 
138

    
139
    { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') }, 
140

    
141
    /* added based on MPlayer */
142
    { CODEC_ID_WMV1, MKTAG('w', 'm', 'v', '1') }, 
143

    
144
    { CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') }, 
145
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') }, 
146
    { CODEC_ID_DVVIDEO, MKTAG('D', 'V', 'S', 'D') }, 
147
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') }, 
148
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') }, 
149
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
150
    { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') }, 
151
    { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') }, 
152
    { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') }, 
153
    { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
154
    { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'g') },
155
    { CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },
156
    { CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },
157
    { CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
158
    { CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
159
    { CODEC_ID_HUFFYUV, MKTAG('h', 'f', 'y', 'u') },
160
    { CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
161
    { CODEC_ID_CYUV, MKTAG('c', 'y', 'u', 'v') },
162
    { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
163
    { CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
164
    { CODEC_ID_INDEO3, MKTAG('i', 'v', '3', '1') },
165
    { CODEC_ID_INDEO3, MKTAG('i', 'v', '3', '2') },
166
    { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
167
    { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
168
    { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
169
    { CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },
170
    { CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },
171
    { CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },
172
    { 0, 0 },
173
};
174

    
175
unsigned int codec_get_tag(const CodecTag *tags, int id)
176
{
177
    while (tags->id != 0) {
178
        if (tags->id == id)
179
            return tags->tag;
180
        tags++;
181
    }
182
    return 0;
183
}
184

    
185
static unsigned int codec_get_asf_tag(const CodecTag *tags, int id)
186
{
187
    while (tags->id != 0) {
188
        if (!tags->invalid_asf && tags->id == id)
189
            return tags->tag;
190
        tags++;
191
    }
192
    return 0;
193
}
194

    
195
enum CodecID codec_get_id(const CodecTag *tags, unsigned int tag)
196
{
197
    while (tags->id != 0) {
198
        if (tags->tag == tag)
199
            return tags->id;
200
        tags++;
201
    }
202
    return CODEC_ID_NONE;
203
}
204

    
205
unsigned int codec_get_bmp_tag(int id)
206
{
207
    return codec_get_tag(codec_bmp_tags, id);
208
}
209

    
210
/* BITMAPINFOHEADER header */
211
void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const CodecTag *tags, int for_asf)
212
{
213
    put_le32(pb, 40 + enc->extradata_size); /* size */
214
    put_le32(pb, enc->width);
215
    put_le32(pb, enc->height);
216
    put_le16(pb, 1); /* planes */
217
    
218
    put_le16(pb, enc->bits_per_sample ? enc->bits_per_sample : 24); /* depth */
219
    /* compression type */
220
    put_le32(pb, for_asf ? codec_get_asf_tag(tags, enc->codec_id) : enc->codec_tag);
221
    put_le32(pb, enc->width * enc->height * 3);
222
    put_le32(pb, 0);
223
    put_le32(pb, 0);
224
    put_le32(pb, 0);
225
    put_le32(pb, 0);
226
    
227
    put_buffer(pb, enc->extradata, enc->extradata_size);
228

    
229
    if (enc->extradata_size & 1)
230
        put_byte(pb, 0);
231
}
232

    
233
static void parse_specific_params(AVCodecContext *stream, int *au_byterate, int *au_ssize, int *au_scale)
234
{
235
    switch(stream->codec_id) {
236
    case CODEC_ID_PCM_S16LE:
237
       *au_scale = *au_ssize = 2*stream->channels;
238
       *au_byterate = *au_ssize * stream->sample_rate;
239
        break;
240
    case CODEC_ID_PCM_U8:
241
    case CODEC_ID_PCM_ALAW:
242
    case CODEC_ID_PCM_MULAW:
243
        *au_scale = *au_ssize = stream->channels;
244
        *au_byterate = *au_ssize * stream->sample_rate;
245
        break;
246
    case CODEC_ID_MP2:
247
        *au_ssize = 1;
248
        *au_scale = 1;
249
        *au_byterate = stream->bit_rate / 8;
250
    case CODEC_ID_MP3LAME:
251
        *au_ssize = 1;
252
        *au_scale = 1;
253
        *au_byterate = stream->bit_rate / 8;    
254
    default:
255
        *au_ssize = 1;
256
        *au_scale = 1; 
257
        *au_byterate = stream->bit_rate / 8;
258
        break;
259
    }
260
}
261

    
262
static offset_t avi_start_new_riff(AVIContext *avi, ByteIOContext *pb, 
263
                                   const char* riff_tag, const char* list_tag)
264
{
265
    offset_t loff;
266
    int i;
267
    
268
    avi->riff_id++;
269
    for (i=0; i<MAX_STREAMS; i++)
270
         avi->indexes[i].entry = 0;
271
    
272
    avi->riff_start = start_tag(pb, "RIFF");
273
    put_tag(pb, riff_tag);
274
    loff = start_tag(pb, "LIST");
275
    put_tag(pb, list_tag);
276
    return loff;
277
}
278

    
279
static unsigned char* avi_stream2fourcc(unsigned char* tag, int index, 
280
                                        enum CodecType type)
281
{
282
    tag[0] = '0';
283
    tag[1] = '0' + index;
284
    if (type == CODEC_TYPE_VIDEO) {
285
        tag[2] = 'd';
286
        tag[3] = 'c';
287
    } else {
288
        tag[2] = 'w';
289
        tag[3] = 'b';
290
    }
291
    tag[4] = '\0';
292
    return tag;
293
}
294

    
295
static int avi_write_header(AVFormatContext *s)
296
{
297
    AVIContext *avi = s->priv_data;
298
    ByteIOContext *pb = &s->pb;
299
    int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
300
    AVCodecContext *stream, *video_enc;
301
    offset_t list1, list2, strh, strf;
302

    
303
    /* header list */
304
    avi->riff_id = 0;
305
    list1 = avi_start_new_riff(avi, pb, "AVI ", "hdrl");
306

    
307
    /* avi header */
308
    put_tag(pb, "avih");
309
    put_le32(pb, 14 * 4);
310
    bitrate = 0;
311

    
312
    video_enc = NULL;
313
    for(n=0;n<s->nb_streams;n++) {
314
        stream = &s->streams[n]->codec;
315
        bitrate += stream->bit_rate;
316
        if (stream->codec_type == CODEC_TYPE_VIDEO)
317
            video_enc = stream;
318
    }
319
    
320
    nb_frames = 0;
321

    
322
    if(video_enc){
323
        put_le32(pb, (uint32_t)(int64_t_C(1000000) * video_enc->frame_rate_base / video_enc->frame_rate));
324
    } else {
325
        put_le32(pb, 0);
326
    }
327
    put_le32(pb, bitrate / 8); /* XXX: not quite exact */
328
    put_le32(pb, 0); /* padding */
329
    put_le32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
330
    avi->frames_hdr_all = url_ftell(pb); /* remember this offset to fill later */
331
    put_le32(pb, nb_frames); /* nb frames, filled later */
332
    put_le32(pb, 0); /* initial frame */
333
    put_le32(pb, s->nb_streams); /* nb streams */
334
    put_le32(pb, 1024 * 1024); /* suggested buffer size */
335
    if(video_enc){    
336
    put_le32(pb, video_enc->width);
337
    put_le32(pb, video_enc->height);
338
    } else {
339
        put_le32(pb, 0);
340
        put_le32(pb, 0);
341
    }        
342
    put_le32(pb, 0); /* reserved */
343
    put_le32(pb, 0); /* reserved */
344
    put_le32(pb, 0); /* reserved */
345
    put_le32(pb, 0); /* reserved */
346
    
347
    /* stream list */
348
    for(i=0;i<n;i++) {
349
        list2 = start_tag(pb, "LIST");
350
        put_tag(pb, "strl");
351
    
352
        stream = &s->streams[i]->codec;
353

    
354
        /* FourCC should really be set by the codec itself */
355
        if (! stream->codec_tag) {
356
            stream->codec_tag = codec_get_bmp_tag(stream->codec_id);
357
        }
358

    
359
        /* stream generic header */
360
        strh = start_tag(pb, "strh");
361
        switch(stream->codec_type) {
362
        case CODEC_TYPE_VIDEO:
363
            put_tag(pb, "vids");
364
            put_le32(pb, stream->codec_tag);
365
            put_le32(pb, 0); /* flags */
366
            put_le16(pb, 0); /* priority */
367
            put_le16(pb, 0); /* language */
368
            put_le32(pb, 0); /* initial frame */
369
            
370
            put_le32(pb, stream->frame_rate_base); /* scale */
371
            put_le32(pb, stream->frame_rate); /* rate */
372

    
373
            put_le32(pb, 0); /* start */
374
            avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
375
            put_le32(pb, nb_frames); /* length, XXX: fill later */
376
            put_le32(pb, 1024 * 1024); /* suggested buffer size */
377
            put_le32(pb, -1); /* quality */
378
            put_le32(pb, stream->width * stream->height * 3); /* sample size */
379
            put_le16(pb, 0);
380
            put_le16(pb, 0);
381
            put_le16(pb, stream->width);
382
            put_le16(pb, stream->height);
383
            break;
384
        case CODEC_TYPE_AUDIO:
385
            put_tag(pb, "auds");
386
            put_le32(pb, 1); /* tag */
387
            put_le32(pb, 0); /* flags */
388
            put_le16(pb, 0); /* priority */
389
            put_le16(pb, 0); /* language */
390
            put_le32(pb, 0); /* initial frame */
391
            parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
392
            put_le32(pb, au_scale); /* scale */
393
            put_le32(pb, au_byterate); /* rate */
394
            put_le32(pb, 0); /* start */
395
            avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
396
            put_le32(pb, 0); /* length, XXX: filled later */
397
            put_le32(pb, 12 * 1024); /* suggested buffer size */
398
            put_le32(pb, -1); /* quality */
399
            put_le32(pb, au_ssize); /* sample size */
400
            put_le32(pb, 0);
401
            put_le32(pb, 0);
402
            break;
403
        default:
404
            av_abort();
405
        }
406
        end_tag(pb, strh);
407

    
408
        strf = start_tag(pb, "strf");
409
        switch(stream->codec_type) {
410
        case CODEC_TYPE_VIDEO:
411
            put_bmp_header(pb, stream, codec_bmp_tags, 0);
412
            break;
413
        case CODEC_TYPE_AUDIO:
414
            if (put_wav_header(pb, stream) < 0) {
415
                av_free(avi);
416
                return -1;
417
            }
418
            break;
419
        default:
420
            av_abort();
421
        }
422
        end_tag(pb, strf);
423
        
424
        if (!url_is_streamed(pb)) {
425
            unsigned char tag[5];
426
            int j;
427
    
428
            /* Starting to lay out AVI OpenDML master index. 
429
             * We want to make it JUNK entry for now, since we'd
430
             * like to get away without making AVI an OpenDML one 
431
             * for compatibility reasons.
432
             */
433
            avi->indexes[i].entry = avi->indexes[i].ents_allocated = 0;
434
            avi->indexes[i].indx_start = start_tag(pb, "JUNK"); 
435
            put_le16(pb, 4);        /* wLongsPerEntry */
436
            put_byte(pb, 0);        /* bIndexSubType (0 == frame index) */
437
            put_byte(pb, 0);        /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */
438
            put_le32(pb, 0);        /* nEntriesInUse (will fill out later on) */
439
            put_tag(pb, avi_stream2fourcc(&tag[0], i, stream->codec_type));
440
                                    /* dwChunkId */
441
            put_le64(pb, 0);        /* dwReserved[3]
442
            put_le32(pb, 0);           Must be 0.    */
443
            for (j=0; j < AVI_MASTER_INDEX_SIZE * 2; j++)
444
                 put_le64(pb, 0);
445
            end_tag(pb, avi->indexes[i].indx_start);
446
        }
447
        
448
        end_tag(pb, list2);
449
    }
450
    
451
    if (!url_is_streamed(pb)) {
452
        /* AVI could become an OpenDML one, if it grows beyond 2Gb range */
453
        avi->odml_list = start_tag(pb, "JUNK");
454
        put_tag(pb, "odml");
455
        put_tag(pb, "dmlh");
456
        put_le32(pb, 248);
457
        for (i = 0; i < 248; i+= 4)
458
             put_le32(pb, 0);
459
        end_tag(pb, avi->odml_list);
460
    }
461

    
462
    end_tag(pb, list1);
463
    
464
    avi->movi_list = start_tag(pb, "LIST");
465
    put_tag(pb, "movi");
466

    
467
    put_flush_packet(pb);
468

    
469
    return 0;
470
}
471

    
472
static int avi_write_ix(AVFormatContext *s)
473
{
474
    ByteIOContext *pb = &s->pb;
475
    AVIContext *avi = s->priv_data;
476
    unsigned char tag[5];
477
    unsigned char ix_tag[] = "ix00";
478
    int i, j;
479
    
480
    if (avi->riff_id > AVI_MASTER_INDEX_SIZE)
481
        return -1;
482
    
483
    for (i=0;i<s->nb_streams;i++) {
484
         offset_t ix, pos;
485
         
486
         avi_stream2fourcc(&tag[0], i, s->streams[i]->codec.codec_type);
487
         ix_tag[3] = '0' + i;
488
         
489
         /* Writing AVI OpenDML leaf index chunk */
490
         ix = url_ftell(pb); 
491
         put_tag(pb, &ix_tag[0]);     /* ix?? */
492
         put_le32(pb, avi->indexes[i].entry * 8 + 24); 
493
                                      /* chunk size */
494
         put_le16(pb, 2);             /* wLongsPerEntry */
495
         put_byte(pb, 0);             /* bIndexSubType (0 == frame index) */ 
496
         put_byte(pb, 1);             /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
497
         put_le32(pb, avi->indexes[i].entry);          
498
                                      /* nEntriesInUse */
499
         put_tag(pb, &tag[0]);        /* dwChunkId */
500
         put_le64(pb, avi->movi_list);/* qwBaseOffset */
501
         put_le32(pb, 0);             /* dwReserved_3 (must be 0) */
502

    
503
         for (j=0; j<avi->indexes[i].entry; j++) {
504
             AVIIentry* ie = avi_get_ientry(&avi->indexes[i], j);
505
             put_le32(pb, ie->pos + 8);
506
             put_le32(pb, ((uint32_t)ie->len & ~0x80000000) |
507
                          (ie->flags & 0x10 ? 0 : 0x80000000));
508
         }
509
         put_flush_packet(pb);
510
         pos = url_ftell(pb);
511
        
512
         /* Updating one entry in the AVI OpenDML master index */
513
         url_fseek(pb, avi->indexes[i].indx_start - 8, SEEK_SET);
514
         put_tag(pb, "indx");                 /* enabling this entry */
515
         url_fskip(pb, 8);
516
         put_le32(pb, avi->riff_id);          /* nEntriesInUse */
517
         url_fskip(pb, 16*avi->riff_id);
518
         put_le64(pb, ix);                    /* qwOffset */
519
         put_le32(pb, pos - ix);              /* dwSize */
520
         put_le32(pb, avi->indexes[i].entry); /* dwDuration */
521

    
522
         url_fseek(pb, pos, SEEK_SET);
523
    }
524
    return 0;
525
}
526

    
527
static int avi_write_idx1(AVFormatContext *s)
528
{
529
    ByteIOContext *pb = &s->pb;
530
    AVIContext *avi = s->priv_data;
531
    offset_t file_size, idx_chunk;
532
    int i, n, nb_frames, au_byterate, au_ssize, au_scale;
533
    AVCodecContext *stream;
534
    unsigned char tag[5];
535

    
536
    if (!url_is_streamed(pb)) {
537
        AVIIentry* ie = 0, *tie;
538
        int entry[MAX_STREAMS];
539
        int empty, stream_id = -1;
540

    
541
        idx_chunk = start_tag(pb, "idx1");
542
        memset(&entry[0], 0, sizeof(entry));
543
        do {
544
            empty = 1;
545
            for (i=0; i<s->nb_streams; i++) {
546
                 if (avi->indexes[i].entry <= entry[i])
547
                     continue;
548
                 
549
                 tie = avi_get_ientry(&avi->indexes[i], entry[i]);
550
                 if (empty || tie->pos < ie->pos) {
551
                     ie = tie; 
552
                     stream_id = i;
553
                 }
554
                 empty = 0;
555
            }
556
            if (!empty) {
557
                avi_stream2fourcc(&tag[0], stream_id, 
558
                                  s->streams[stream_id]->codec.codec_type); 
559
                put_tag(pb, &tag[0]);
560
                put_le32(pb, ie->flags);
561
                put_le32(pb, ie->pos);
562
                put_le32(pb, ie->len);
563
                entry[stream_id]++;
564
            }
565
        } while (!empty);
566
        end_tag(pb, idx_chunk);
567

    
568
        /* Fill in frame/sample counters */
569
        file_size = url_ftell(pb);
570
        nb_frames = 0;
571
        for(n=0;n<s->nb_streams;n++) {
572
            if (avi->frames_hdr_strm[n] != 0) {
573
                stream = &s->streams[n]->codec;
574
                url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);
575
                if (stream->codec_type == CODEC_TYPE_VIDEO) {
576
                    put_le32(pb, stream->frame_number); 
577
                    if (nb_frames < stream->frame_number)
578
                        nb_frames = stream->frame_number;
579
                } else {
580
                    if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3LAME) {
581
                        put_le32(pb, stream->frame_number);
582
                        nb_frames += stream->frame_number;
583
                    } else {
584
                        parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
585
                        put_le32(pb, avi->audio_strm_length[n] / au_ssize);
586
                    }
587
                }
588
            }
589
       }
590
       if (avi->frames_hdr_all != 0) {
591
           url_fseek(pb, avi->frames_hdr_all, SEEK_SET);
592
           put_le32(pb, nb_frames); 
593
       }
594
       url_fseek(pb, file_size, SEEK_SET);
595
    }
596
    return 0;
597
}
598

    
599
static int avi_write_packet(AVFormatContext *s, int stream_index,
600
                            uint8_t *buf, int size, int force_pts)
601
{
602
    AVIContext *avi = s->priv_data;
603
    ByteIOContext *pb = &s->pb;
604
    unsigned char tag[5];
605
    unsigned int flags;
606
    AVCodecContext *enc;
607

    
608
    if (url_ftell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE) { 
609
        avi_write_ix(s);
610
        end_tag(pb, avi->movi_list);
611
        
612
        if (avi->riff_id == 1)
613
            avi_write_idx1(s);
614

    
615
        end_tag(pb, avi->riff_start);
616
        avi->movi_list = avi_start_new_riff(avi, pb, "AVIX", "movi");
617
    }
618
    
619
    enc = &s->streams[stream_index]->codec;
620
    avi_stream2fourcc(&tag[0], stream_index, enc->codec_type);
621
    if (enc->codec_type == CODEC_TYPE_AUDIO) {
622
       avi->audio_strm_length[stream_index] += size;
623
       flags = 0x10;
624
    } else
625
       flags = enc->coded_frame->key_frame ? 0x10 : 0x00;
626

    
627
    if (!url_is_streamed(&s->pb)) {
628
        AVIIndex* idx = &avi->indexes[stream_index];
629
        int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;
630
        int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;
631
        if (idx->ents_allocated <= idx->entry) {
632
            idx->cluster = av_realloc(idx->cluster, (cl+1)*sizeof(void*)); 
633
            if (!idx->cluster)
634
                return -1;
635
            idx->cluster[cl] = av_malloc(AVI_INDEX_CLUSTER_SIZE*sizeof(AVIIentry));
636
            if (!idx->cluster[cl])
637
                return -1;
638
            idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;
639
        }
640
         
641
        idx->cluster[cl][id].flags = flags; 
642
        idx->cluster[cl][id].pos = url_ftell(pb) - avi->movi_list;
643
        idx->cluster[cl][id].len = size;
644
        idx->entry++;
645
    }
646
    
647
    put_buffer(pb, tag, 4);
648
    put_le32(pb, size);
649
    put_buffer(pb, buf, size);
650
    if (size & 1)
651
        put_byte(pb, 0);
652

    
653
    put_flush_packet(pb);
654
    return 0;
655
}
656

    
657
static int avi_write_trailer(AVFormatContext *s)
658
{
659
    AVIContext *avi = s->priv_data;
660
    ByteIOContext *pb = &s->pb;
661
    int res = 0;
662
    int i, j, n, nb_frames;
663
    offset_t file_size;
664

    
665
    if (avi->riff_id == 1) {
666
        end_tag(pb, avi->movi_list);
667
        res = avi_write_idx1(s);
668
        end_tag(pb, avi->riff_start);
669
    } else {
670
        avi_write_ix(s);
671
        end_tag(pb, avi->movi_list);
672
        end_tag(pb, avi->riff_start);
673

    
674
        file_size = url_ftell(pb);
675
        url_fseek(pb, avi->odml_list - 8, SEEK_SET);
676
        put_tag(pb, "LIST"); /* Making this AVI OpenDML one */
677
        url_fskip(pb, 16);
678

    
679
        for (n=nb_frames=0;n<s->nb_streams;n++) {
680
             AVCodecContext *stream = &s->streams[n]->codec;
681
             if (stream->codec_type == CODEC_TYPE_VIDEO) {
682
                 if (nb_frames < stream->frame_number)
683
                     nb_frames = stream->frame_number;
684
             } else {
685
                 if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3LAME) {
686
                     nb_frames += stream->frame_number;
687
                }
688
            }
689
        }
690
        put_le32(pb, nb_frames);
691
        url_fseek(pb, file_size, SEEK_SET);
692
    }
693
    put_flush_packet(pb);
694

    
695
    for (i=0; i<MAX_STREAMS; i++) {
696
         for (j=0; j<avi->indexes[i].ents_allocated/AVI_INDEX_CLUSTER_SIZE; j++)
697
              av_free(avi->indexes[i].cluster[j]);
698
         av_free(avi->indexes[i].cluster);
699
         avi->indexes[i].cluster = NULL;
700
         avi->indexes[i].ents_allocated = avi->indexes[i].entry = 0;
701
    }
702
    
703
    return res;
704
}
705

    
706
static AVOutputFormat avi_oformat = {
707
    "avi",
708
    "avi format",
709
    "video/x-msvideo",
710
    "avi",
711
    sizeof(AVIContext),
712
    CODEC_ID_MP2,
713
    CODEC_ID_MPEG4,
714
    avi_write_header,
715
    avi_write_packet,
716
    avi_write_trailer,
717
};
718

    
719
int avienc_init(void)
720
{
721
    av_register_output_format(&avi_oformat);
722
    return 0;
723
}