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ffmpeg / libavformat / avienc.c @ a8a15e9d

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1
/*
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 * AVI encoder.
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 * Copyright (c) 2000 Fabrice Bellard.
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 *
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 * This library is free software; you can redistribute it and/or
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 * 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
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 * 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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 */
19
#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

    
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#ifdef CONFIG_ENCODERS
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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
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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;
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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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    int packet_count[MAX_STREAMS];
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    AVIIndex indexes[MAX_STREAMS];
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} AVIContext;
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static inline AVIIentry* avi_get_ientry(AVIIndex* idx, int ent_id) 
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{
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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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}
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offset_t start_tag(ByteIOContext *pb, const char *tag)
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{
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    put_tag(pb, tag);
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    put_le32(pb, 0);
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    return url_ftell(pb);
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}
64

    
65
void end_tag(ByteIOContext *pb, offset_t start)
66
{
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    offset_t pos;
68

    
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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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}
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[] = {
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    { CODEC_ID_H264, MKTAG('H', '2', '6', '4') },
80

    
81
    { 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 */
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    { CODEC_ID_H261, MKTAG('H', '2', '6', '1') },
85

    
86
    /* added based on MPlayer */
87
    { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
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    { CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },
89

    
90
    { CODEC_ID_MPEG4, MKTAG('F', 'M', 'P', '4')},
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    { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X'), .invalid_asf = 1 },
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    { 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 },
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    { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
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    { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
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    { CODEC_ID_MPEG4, MKTAG(0x04, 0, 0, 0) }, /* some broken avi use this */
97

    
98
    /* added based on MPlayer */
99
    { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
100
    { CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
101
    { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
102
    { CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
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    { CODEC_ID_MPEG4, MKTAG('W', 'V', '1', 'F') },
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    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3'), .invalid_asf = 1 }, /* default signature when using MSMPEG4 */
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    { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') }, 
107

    
108
    /* added based on MPlayer */
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    { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') }, 
110
    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') }, 
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    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') }, 
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    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') }, 
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    { CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') }, 
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    { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') }, 
115
    { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') }, 
116

    
117
    { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') }, 
118

    
119
    /* added based on MPlayer */
120
    { CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
121
 
122
    { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') }, 
123

    
124
    { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') }, 
125

    
126
    /* added based on MPlayer */
127
    { CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') }, 
128
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') }, 
129
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') }, 
130
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') }, 
131
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
132
    { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') }, 
133
    { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') }, 
134
    { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', '2') }, 
135
    { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') }, 
136
    { CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') }, 
137
    { CODEC_ID_MPEG1VIDEO, 0x10000001 }, 
138
    { CODEC_ID_MPEG2VIDEO, 0x10000002 }, 
139
    { CODEC_ID_MPEG2VIDEO, MKTAG('D', 'V', 'R', ' ') },
140
    { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
141
    { CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },
142
    { CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },
143
    { CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
144
    { CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
145
    { CODEC_ID_FFVHUFF, MKTAG('F', 'F', 'V', 'H') },
146
    { CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
147
    { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
148
    { CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
149
    { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
150
    { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
151
    { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
152
    { CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },
153
    { CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') },
154
    { CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },
155
    { CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },
156
    { CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') },
157
    { CODEC_ID_MSRLE, MKTAG('m', 'r', 'l', 'e') },
158
    { CODEC_ID_MSRLE, MKTAG(0x1, 0x0, 0x0, 0x0) },
159
    { CODEC_ID_MSVIDEO1, MKTAG('M', 'S', 'V', 'C') },
160
    { CODEC_ID_MSVIDEO1, MKTAG('m', 's', 'v', 'c') },
161
    { CODEC_ID_MSVIDEO1, MKTAG('C', 'R', 'A', 'M') },
162
    { CODEC_ID_MSVIDEO1, MKTAG('c', 'r', 'a', 'm') },
163
    { CODEC_ID_MSVIDEO1, MKTAG('W', 'H', 'A', 'M') },
164
    { CODEC_ID_MSVIDEO1, MKTAG('w', 'h', 'a', 'm') },
165
    { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') },
166
    { CODEC_ID_TRUEMOTION1, MKTAG('D', 'U', 'C', 'K') },
167
    { CODEC_ID_MSZH, MKTAG('M', 'S', 'Z', 'H') },
168
    { CODEC_ID_ZLIB, MKTAG('Z', 'L', 'I', 'B') },
169
    { CODEC_ID_SNOW, MKTAG('S', 'N', 'O', 'W') },
170
    { CODEC_ID_4XM, MKTAG('4', 'X', 'M', 'V') },
171
    { CODEC_ID_FLV1, MKTAG('F', 'L', 'V', '1') },
172
    { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') },
173
    { CODEC_ID_TSCC, MKTAG('t', 's', 'c', 'c') },
174
    { CODEC_ID_ULTI, MKTAG('U', 'L', 'T', 'I') },
175
    { CODEC_ID_VIXL, MKTAG('V', 'I', 'X', 'L') },
176
    { CODEC_ID_QPEG, MKTAG('Q', 'P', 'E', 'G') },
177
    { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '0') },
178
    { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '1') },
179
    { CODEC_ID_WMV3, MKTAG('W', 'M', 'V', '3') },
180
    { CODEC_ID_LOCO, MKTAG('L', 'O', 'C', 'O') },
181
    { CODEC_ID_WNV1, MKTAG('W', 'N', 'V', '1') },
182
    { CODEC_ID_RAWVIDEO, 0 },
183
    { 0, 0 },
184
};
185

    
186
unsigned int codec_get_tag(const CodecTag *tags, int id)
187
{
188
    while (tags->id != 0) {
189
        if (tags->id == id)
190
            return tags->tag;
191
        tags++;
192
    }
193
    return 0;
194
}
195

    
196
static unsigned int codec_get_asf_tag(const CodecTag *tags, unsigned int id)
197
{
198
    while (tags->id != 0) {
199
        if (!tags->invalid_asf && tags->id == id)
200
            return tags->tag;
201
        tags++;
202
    }
203
    return 0;
204
}
205

    
206
enum CodecID codec_get_id(const CodecTag *tags, unsigned int tag)
207
{
208
    while (tags->id != 0) {
209
        if(   toupper((tag >> 0)&0xFF) == toupper((tags->tag >> 0)&0xFF)
210
           && toupper((tag >> 8)&0xFF) == toupper((tags->tag >> 8)&0xFF)
211
           && toupper((tag >>16)&0xFF) == toupper((tags->tag >>16)&0xFF)
212
           && toupper((tag >>24)&0xFF) == toupper((tags->tag >>24)&0xFF))
213
            return tags->id;
214
        tags++;
215
    }
216
    return CODEC_ID_NONE;
217
}
218

    
219
unsigned int codec_get_bmp_tag(int id)
220
{
221
    return codec_get_tag(codec_bmp_tags, id);
222
}
223

    
224
unsigned int codec_get_wav_tag(int id)
225
{
226
    return codec_get_tag(codec_wav_tags, id);
227
}
228

    
229
enum CodecID codec_get_bmp_id(unsigned int tag)
230
{
231
    return codec_get_id(codec_bmp_tags, tag);
232
}
233

    
234
enum CodecID codec_get_wav_id(unsigned int tag)
235
{
236
    return codec_get_id(codec_wav_tags, tag);
237
}
238

    
239
#ifdef CONFIG_ENCODERS
240
/* BITMAPINFOHEADER header */
241
void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const CodecTag *tags, int for_asf)
242
{
243
    put_le32(pb, 40 + enc->extradata_size); /* size */
244
    put_le32(pb, enc->width);
245
    put_le32(pb, enc->height);
246
    put_le16(pb, 1); /* planes */
247
    
248
    put_le16(pb, enc->bits_per_sample ? enc->bits_per_sample : 24); /* depth */
249
    /* compression type */
250
    put_le32(pb, for_asf ? (enc->codec_tag ? enc->codec_tag : codec_get_asf_tag(tags, enc->codec_id)) : enc->codec_tag); //
251
    put_le32(pb, enc->width * enc->height * 3);
252
    put_le32(pb, 0);
253
    put_le32(pb, 0);
254
    put_le32(pb, 0);
255
    put_le32(pb, 0);
256
    
257
    put_buffer(pb, enc->extradata, enc->extradata_size);
258

    
259
    if (enc->extradata_size & 1)
260
        put_byte(pb, 0);
261
}
262

    
263
static void parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)
264
{
265
    int gcd;
266

    
267
    *au_ssize= stream->block_align;
268
    if(stream->frame_size && stream->sample_rate){
269
        *au_scale=stream->frame_size;
270
        *au_rate= stream->sample_rate;
271
    }else if(stream->codec_type == CODEC_TYPE_VIDEO){
272
        *au_scale= stream->frame_rate_base;
273
        *au_rate = stream->frame_rate;
274
    }else{
275
        *au_scale= stream->block_align ? stream->block_align*8 : 8;
276
        *au_rate = stream->bit_rate;
277
    }
278
    gcd= ff_gcd(*au_scale, *au_rate);
279
    *au_scale /= gcd;
280
    *au_rate /= gcd;
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, 0); /* 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
                parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
599
                if (au_ssize == 0) {
600
                    put_le32(pb, stream->frame_number);
601
                    nb_frames += stream->frame_number;
602
                } else {
603
                    put_le32(pb, avi->audio_strm_length[n] / au_ssize);
604
                }
605
            }
606
       }
607
       if (avi->frames_hdr_all != 0) {
608
           url_fseek(pb, avi->frames_hdr_all, SEEK_SET);
609
           put_le32(pb, nb_frames); 
610
       }
611
       url_fseek(pb, file_size, SEEK_SET);
612
    }
613
    return 0;
614
}
615

    
616
static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
617
{
618
    AVIContext *avi = s->priv_data;
619
    ByteIOContext *pb = &s->pb;
620
    unsigned char tag[5];
621
    unsigned int flags=0;
622
    const int stream_index= pkt->stream_index;
623
    AVCodecContext *enc= &s->streams[stream_index]->codec;
624
    int size= pkt->size;
625

    
626
//    av_log(s, AV_LOG_DEBUG, "%lld %d %d\n", pkt->dts, avi->packet_count[stream_index], stream_index);
627
    while(enc->codec_type == CODEC_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE && pkt->dts > avi->packet_count[stream_index]){
628
        AVPacket empty_packet;
629

    
630
        av_init_packet(&empty_packet);
631
        empty_packet.size= 0;
632
        empty_packet.data= NULL;
633
        empty_packet.stream_index= stream_index;
634
        avi_write_packet(s, &empty_packet);
635
//        av_log(s, AV_LOG_DEBUG, "dup %lld %d\n", pkt->dts, avi->packet_count[stream_index]);
636
    }
637
    avi->packet_count[stream_index]++;
638

    
639
    if (url_ftell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE) { 
640
        avi_write_ix(s);
641
        end_tag(pb, avi->movi_list);
642
        
643
        if (avi->riff_id == 1)
644
            avi_write_idx1(s);
645

    
646
        end_tag(pb, avi->riff_start);
647
        avi->movi_list = avi_start_new_riff(avi, pb, "AVIX", "movi");
648
    }
649
    
650
    avi_stream2fourcc(&tag[0], stream_index, enc->codec_type);
651
    if(pkt->flags&PKT_FLAG_KEY)
652
        flags = 0x10;
653
    if (enc->codec_type == CODEC_TYPE_AUDIO) {
654
       avi->audio_strm_length[stream_index] += size;
655
    }
656

    
657
    if (!url_is_streamed(&s->pb)) {
658
        AVIIndex* idx = &avi->indexes[stream_index];
659
        int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;
660
        int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;
661
        if (idx->ents_allocated <= idx->entry) {
662
            idx->cluster = av_realloc(idx->cluster, (cl+1)*sizeof(void*)); 
663
            if (!idx->cluster)
664
                return -1;
665
            idx->cluster[cl] = av_malloc(AVI_INDEX_CLUSTER_SIZE*sizeof(AVIIentry));
666
            if (!idx->cluster[cl])
667
                return -1;
668
            idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;
669
        }
670
         
671
        idx->cluster[cl][id].flags = flags; 
672
        idx->cluster[cl][id].pos = url_ftell(pb) - avi->movi_list;
673
        idx->cluster[cl][id].len = size;
674
        idx->entry++;
675
    }
676
    
677
    put_buffer(pb, tag, 4);
678
    put_le32(pb, size);
679
    put_buffer(pb, pkt->data, size);
680
    if (size & 1)
681
        put_byte(pb, 0);
682

    
683
    put_flush_packet(pb);
684
    return 0;
685
}
686

    
687
static int avi_write_trailer(AVFormatContext *s)
688
{
689
    AVIContext *avi = s->priv_data;
690
    ByteIOContext *pb = &s->pb;
691
    int res = 0;
692
    int i, j, n, nb_frames;
693
    offset_t file_size;
694

    
695
    if (avi->riff_id == 1) {
696
        end_tag(pb, avi->movi_list);
697
        res = avi_write_idx1(s);
698
        end_tag(pb, avi->riff_start);
699
    } else {
700
        avi_write_ix(s);
701
        end_tag(pb, avi->movi_list);
702
        end_tag(pb, avi->riff_start);
703

    
704
        file_size = url_ftell(pb);
705
        url_fseek(pb, avi->odml_list - 8, SEEK_SET);
706
        put_tag(pb, "LIST"); /* Making this AVI OpenDML one */
707
        url_fskip(pb, 16);
708

    
709
        for (n=nb_frames=0;n<s->nb_streams;n++) {
710
             AVCodecContext *stream = &s->streams[n]->codec;
711
             if (stream->codec_type == CODEC_TYPE_VIDEO) {
712
                 if (nb_frames < stream->frame_number)
713
                     nb_frames = stream->frame_number;
714
             } else {
715
                 if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3) {
716
                     nb_frames += stream->frame_number;
717
                }
718
            }
719
        }
720
        put_le32(pb, nb_frames);
721
        url_fseek(pb, file_size, SEEK_SET);
722
    }
723
    put_flush_packet(pb);
724

    
725
    for (i=0; i<MAX_STREAMS; i++) {
726
         for (j=0; j<avi->indexes[i].ents_allocated/AVI_INDEX_CLUSTER_SIZE; j++)
727
              av_free(avi->indexes[i].cluster[j]);
728
         av_free(avi->indexes[i].cluster);
729
         avi->indexes[i].cluster = NULL;
730
         avi->indexes[i].ents_allocated = avi->indexes[i].entry = 0;
731
    }
732
    
733
    return res;
734
}
735

    
736
static AVOutputFormat avi_oformat = {
737
    "avi",
738
    "avi format",
739
    "video/x-msvideo",
740
    "avi",
741
    sizeof(AVIContext),
742
    CODEC_ID_MP2,
743
    CODEC_ID_MPEG4,
744
    avi_write_header,
745
    avi_write_packet,
746
    avi_write_trailer,
747
};
748

    
749
int avienc_init(void)
750
{
751
    av_register_output_format(&avi_oformat);
752
    return 0;
753
}
754
#endif //CONFIG_ENCODERS