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ffmpeg / libavformat / avienc.c @ 649b918c

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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
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
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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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 */
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#include "avformat.h"
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#include "avi.h"
21

    
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/*
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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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}
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#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') },
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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 */
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    { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
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    { 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') }, 
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    { 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') }, 
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    { 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_RAWVIDEO, 0 },
182
    { 0, 0 },
183
};
184

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

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

    
205
enum CodecID codec_get_id(const CodecTag *tags, unsigned int tag)
206
{
207
    while (tags->id != 0) {
208
        if(   toupper((tag >> 0)&0xFF) == toupper((tags->tag >> 0)&0xFF)
209
           && toupper((tag >> 8)&0xFF) == toupper((tags->tag >> 8)&0xFF)
210
           && toupper((tag >>16)&0xFF) == toupper((tags->tag >>16)&0xFF)
211
           && toupper((tag >>24)&0xFF) == toupper((tags->tag >>24)&0xFF))
212
            return tags->id;
213
        tags++;
214
    }
215
    return CODEC_ID_NONE;
216
}
217

    
218
unsigned int codec_get_bmp_tag(int id)
219
{
220
    return codec_get_tag(codec_bmp_tags, id);
221
}
222

    
223
unsigned int codec_get_wav_tag(int id)
224
{
225
    return codec_get_tag(codec_wav_tags, id);
226
}
227

    
228
enum CodecID codec_get_bmp_id(unsigned int tag)
229
{
230
    return codec_get_id(codec_bmp_tags, tag);
231
}
232

    
233
enum CodecID codec_get_wav_id(unsigned int tag)
234
{
235
    return codec_get_id(codec_wav_tags, tag);
236
}
237

    
238
#ifdef CONFIG_ENCODERS
239
/* BITMAPINFOHEADER header */
240
void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const CodecTag *tags, int for_asf)
241
{
242
    put_le32(pb, 40 + enc->extradata_size); /* size */
243
    put_le32(pb, enc->width);
244
    put_le32(pb, enc->height);
245
    put_le16(pb, 1); /* planes */
246
    
247
    put_le16(pb, enc->bits_per_sample ? enc->bits_per_sample : 24); /* depth */
248
    /* compression type */
249
    put_le32(pb, for_asf ? (enc->codec_tag ? enc->codec_tag : codec_get_asf_tag(tags, enc->codec_id)) : enc->codec_tag); //
250
    put_le32(pb, enc->width * enc->height * 3);
251
    put_le32(pb, 0);
252
    put_le32(pb, 0);
253
    put_le32(pb, 0);
254
    put_le32(pb, 0);
255
    
256
    put_buffer(pb, enc->extradata, enc->extradata_size);
257

    
258
    if (enc->extradata_size & 1)
259
        put_byte(pb, 0);
260
}
261

    
262
static void parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)
263
{
264
    int gcd;
265

    
266
    *au_ssize= stream->block_align;
267
    if(stream->frame_size && stream->sample_rate){
268
        *au_scale=stream->frame_size;
269
        *au_rate= stream->sample_rate;
270
    }else if(stream->codec_type == CODEC_TYPE_VIDEO){
271
        *au_scale= stream->frame_rate_base;
272
        *au_rate = stream->frame_rate;
273
    }else{
274
        *au_scale= stream->block_align ? stream->block_align*8 : 8;
275
        *au_rate = stream->bit_rate;
276
    }
277
    gcd= ff_gcd(*au_scale, *au_rate);
278
    *au_scale /= gcd;
279
    *au_rate /= gcd;
280
}
281

    
282
static offset_t avi_start_new_riff(AVIContext *avi, ByteIOContext *pb, 
283
                                   const char* riff_tag, const char* list_tag)
284
{
285
    offset_t loff;
286
    int i;
287
    
288
    avi->riff_id++;
289
    for (i=0; i<MAX_STREAMS; i++)
290
         avi->indexes[i].entry = 0;
291
    
292
    avi->riff_start = start_tag(pb, "RIFF");
293
    put_tag(pb, riff_tag);
294
    loff = start_tag(pb, "LIST");
295
    put_tag(pb, list_tag);
296
    return loff;
297
}
298

    
299
static unsigned char* avi_stream2fourcc(unsigned char* tag, int index, 
300
                                        enum CodecType type)
301
{
302
    tag[0] = '0';
303
    tag[1] = '0' + index;
304
    if (type == CODEC_TYPE_VIDEO) {
305
        tag[2] = 'd';
306
        tag[3] = 'c';
307
    } else {
308
        tag[2] = 'w';
309
        tag[3] = 'b';
310
    }
311
    tag[4] = '\0';
312
    return tag;
313
}
314

    
315
static int avi_write_header(AVFormatContext *s)
316
{
317
    AVIContext *avi = s->priv_data;
318
    ByteIOContext *pb = &s->pb;
319
    int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
320
    AVCodecContext *stream, *video_enc;
321
    offset_t list1, list2, strh, strf;
322

    
323
    /* header list */
324
    avi->riff_id = 0;
325
    list1 = avi_start_new_riff(avi, pb, "AVI ", "hdrl");
326

    
327
    /* avi header */
328
    put_tag(pb, "avih");
329
    put_le32(pb, 14 * 4);
330
    bitrate = 0;
331

    
332
    video_enc = NULL;
333
    for(n=0;n<s->nb_streams;n++) {
334
        stream = &s->streams[n]->codec;
335
        bitrate += stream->bit_rate;
336
        if (stream->codec_type == CODEC_TYPE_VIDEO)
337
            video_enc = stream;
338
    }
339
    
340
    nb_frames = 0;
341

    
342
    if(video_enc){
343
        put_le32(pb, (uint32_t)(int64_t_C(1000000) * video_enc->frame_rate_base / video_enc->frame_rate));
344
    } else {
345
        put_le32(pb, 0);
346
    }
347
    put_le32(pb, bitrate / 8); /* XXX: not quite exact */
348
    put_le32(pb, 0); /* padding */
349
    put_le32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
350
    avi->frames_hdr_all = url_ftell(pb); /* remember this offset to fill later */
351
    put_le32(pb, nb_frames); /* nb frames, filled later */
352
    put_le32(pb, 0); /* initial frame */
353
    put_le32(pb, s->nb_streams); /* nb streams */
354
    put_le32(pb, 1024 * 1024); /* suggested buffer size */
355
    if(video_enc){    
356
    put_le32(pb, video_enc->width);
357
    put_le32(pb, video_enc->height);
358
    } else {
359
        put_le32(pb, 0);
360
        put_le32(pb, 0);
361
    }        
362
    put_le32(pb, 0); /* reserved */
363
    put_le32(pb, 0); /* reserved */
364
    put_le32(pb, 0); /* reserved */
365
    put_le32(pb, 0); /* reserved */
366
    
367
    /* stream list */
368
    for(i=0;i<n;i++) {
369
        list2 = start_tag(pb, "LIST");
370
        put_tag(pb, "strl");
371
    
372
        stream = &s->streams[i]->codec;
373

    
374
        /* FourCC should really be set by the codec itself */
375
        if (! stream->codec_tag) {
376
            stream->codec_tag = codec_get_bmp_tag(stream->codec_id);
377
        }
378

    
379
        /* stream generic header */
380
        strh = start_tag(pb, "strh");
381
        switch(stream->codec_type) {
382
        case CODEC_TYPE_VIDEO:
383
            put_tag(pb, "vids");
384
            put_le32(pb, stream->codec_tag);
385
            put_le32(pb, 0); /* flags */
386
            put_le16(pb, 0); /* priority */
387
            put_le16(pb, 0); /* language */
388
            put_le32(pb, 0); /* initial frame */
389
            
390
            put_le32(pb, stream->frame_rate_base); /* scale */
391
            put_le32(pb, stream->frame_rate); /* rate */
392
            av_set_pts_info(s->streams[i], 64, stream->frame_rate_base, stream->frame_rate);
393

    
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, nb_frames); /* length, XXX: fill later */
397
            put_le32(pb, 1024 * 1024); /* suggested buffer size */
398
            put_le32(pb, -1); /* quality */
399
            put_le32(pb, 0); /* sample size */
400
            put_le16(pb, 0);
401
            put_le16(pb, 0);
402
            put_le16(pb, stream->width);
403
            put_le16(pb, stream->height);
404
            break;
405
        case CODEC_TYPE_AUDIO:
406
            put_tag(pb, "auds");
407
            put_le32(pb, 1); /* tag */
408
            put_le32(pb, 0); /* flags */
409
            put_le16(pb, 0); /* priority */
410
            put_le16(pb, 0); /* language */
411
            put_le32(pb, 0); /* initial frame */
412
            parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
413
            put_le32(pb, au_scale); /* scale */
414
            put_le32(pb, au_byterate); /* rate */
415
            av_set_pts_info(s->streams[i], 64, au_scale, au_byterate);
416
            put_le32(pb, 0); /* start */
417
            avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
418
            put_le32(pb, 0); /* length, XXX: filled later */
419
            put_le32(pb, 12 * 1024); /* suggested buffer size */
420
            put_le32(pb, -1); /* quality */
421
            put_le32(pb, au_ssize); /* sample size */
422
            put_le32(pb, 0);
423
            put_le32(pb, 0);
424
            break;
425
        default:
426
            return -1;
427
        }
428
        end_tag(pb, strh);
429

    
430
        strf = start_tag(pb, "strf");
431
        switch(stream->codec_type) {
432
        case CODEC_TYPE_VIDEO:
433
            put_bmp_header(pb, stream, codec_bmp_tags, 0);
434
            break;
435
        case CODEC_TYPE_AUDIO:
436
            if (put_wav_header(pb, stream) < 0) {
437
                av_free(avi);
438
                return -1;
439
            }
440
            break;
441
        default:
442
            return -1;
443
        }
444
        end_tag(pb, strf);
445
        
446
        if (!url_is_streamed(pb)) {
447
            unsigned char tag[5];
448
            int j;
449
    
450
            /* Starting to lay out AVI OpenDML master index. 
451
             * We want to make it JUNK entry for now, since we'd
452
             * like to get away without making AVI an OpenDML one 
453
             * for compatibility reasons.
454
             */
455
            avi->indexes[i].entry = avi->indexes[i].ents_allocated = 0;
456
            avi->indexes[i].indx_start = start_tag(pb, "JUNK"); 
457
            put_le16(pb, 4);        /* wLongsPerEntry */
458
            put_byte(pb, 0);        /* bIndexSubType (0 == frame index) */
459
            put_byte(pb, 0);        /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */
460
            put_le32(pb, 0);        /* nEntriesInUse (will fill out later on) */
461
            put_tag(pb, avi_stream2fourcc(&tag[0], i, stream->codec_type));
462
                                    /* dwChunkId */
463
            put_le64(pb, 0);        /* dwReserved[3]
464
            put_le32(pb, 0);           Must be 0.    */
465
            for (j=0; j < AVI_MASTER_INDEX_SIZE * 2; j++)
466
                 put_le64(pb, 0);
467
            end_tag(pb, avi->indexes[i].indx_start);
468
        }
469
        
470
        end_tag(pb, list2);
471
    }
472
    
473
    if (!url_is_streamed(pb)) {
474
        /* AVI could become an OpenDML one, if it grows beyond 2Gb range */
475
        avi->odml_list = start_tag(pb, "JUNK");
476
        put_tag(pb, "odml");
477
        put_tag(pb, "dmlh");
478
        put_le32(pb, 248);
479
        for (i = 0; i < 248; i+= 4)
480
             put_le32(pb, 0);
481
        end_tag(pb, avi->odml_list);
482
    }
483

    
484
    end_tag(pb, list1);
485
    
486
    avi->movi_list = start_tag(pb, "LIST");
487
    put_tag(pb, "movi");
488

    
489
    put_flush_packet(pb);
490

    
491
    return 0;
492
}
493

    
494
static int avi_write_ix(AVFormatContext *s)
495
{
496
    ByteIOContext *pb = &s->pb;
497
    AVIContext *avi = s->priv_data;
498
    unsigned char tag[5];
499
    unsigned char ix_tag[] = "ix00";
500
    int i, j;
501
    
502
    if (avi->riff_id > AVI_MASTER_INDEX_SIZE)
503
        return -1;
504
    
505
    for (i=0;i<s->nb_streams;i++) {
506
         offset_t ix, pos;
507
         
508
         avi_stream2fourcc(&tag[0], i, s->streams[i]->codec.codec_type);
509
         ix_tag[3] = '0' + i;
510
         
511
         /* Writing AVI OpenDML leaf index chunk */
512
         ix = url_ftell(pb); 
513
         put_tag(pb, &ix_tag[0]);     /* ix?? */
514
         put_le32(pb, avi->indexes[i].entry * 8 + 24); 
515
                                      /* chunk size */
516
         put_le16(pb, 2);             /* wLongsPerEntry */
517
         put_byte(pb, 0);             /* bIndexSubType (0 == frame index) */ 
518
         put_byte(pb, 1);             /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
519
         put_le32(pb, avi->indexes[i].entry);          
520
                                      /* nEntriesInUse */
521
         put_tag(pb, &tag[0]);        /* dwChunkId */
522
         put_le64(pb, avi->movi_list);/* qwBaseOffset */
523
         put_le32(pb, 0);             /* dwReserved_3 (must be 0) */
524

    
525
         for (j=0; j<avi->indexes[i].entry; j++) {
526
             AVIIentry* ie = avi_get_ientry(&avi->indexes[i], j);
527
             put_le32(pb, ie->pos + 8);
528
             put_le32(pb, ((uint32_t)ie->len & ~0x80000000) |
529
                          (ie->flags & 0x10 ? 0 : 0x80000000));
530
         }
531
         put_flush_packet(pb);
532
         pos = url_ftell(pb);
533
        
534
         /* Updating one entry in the AVI OpenDML master index */
535
         url_fseek(pb, avi->indexes[i].indx_start - 8, SEEK_SET);
536
         put_tag(pb, "indx");                 /* enabling this entry */
537
         url_fskip(pb, 8);
538
         put_le32(pb, avi->riff_id);          /* nEntriesInUse */
539
         url_fskip(pb, 16*avi->riff_id);
540
         put_le64(pb, ix);                    /* qwOffset */
541
         put_le32(pb, pos - ix);              /* dwSize */
542
         put_le32(pb, avi->indexes[i].entry); /* dwDuration */
543

    
544
         url_fseek(pb, pos, SEEK_SET);
545
    }
546
    return 0;
547
}
548

    
549
static int avi_write_idx1(AVFormatContext *s)
550
{
551
    ByteIOContext *pb = &s->pb;
552
    AVIContext *avi = s->priv_data;
553
    offset_t file_size, idx_chunk;
554
    int i, n, nb_frames, au_byterate, au_ssize, au_scale;
555
    AVCodecContext *stream;
556
    unsigned char tag[5];
557

    
558
    if (!url_is_streamed(pb)) {
559
        AVIIentry* ie = 0, *tie;
560
        int entry[MAX_STREAMS];
561
        int empty, stream_id = -1;
562

    
563
        idx_chunk = start_tag(pb, "idx1");
564
        memset(&entry[0], 0, sizeof(entry));
565
        do {
566
            empty = 1;
567
            for (i=0; i<s->nb_streams; i++) {
568
                 if (avi->indexes[i].entry <= entry[i])
569
                     continue;
570
                 
571
                 tie = avi_get_ientry(&avi->indexes[i], entry[i]);
572
                 if (empty || tie->pos < ie->pos) {
573
                     ie = tie; 
574
                     stream_id = i;
575
                 }
576
                 empty = 0;
577
            }
578
            if (!empty) {
579
                avi_stream2fourcc(&tag[0], stream_id, 
580
                                  s->streams[stream_id]->codec.codec_type); 
581
                put_tag(pb, &tag[0]);
582
                put_le32(pb, ie->flags);
583
                put_le32(pb, ie->pos);
584
                put_le32(pb, ie->len);
585
                entry[stream_id]++;
586
            }
587
        } while (!empty);
588
        end_tag(pb, idx_chunk);
589

    
590
        /* Fill in frame/sample counters */
591
        file_size = url_ftell(pb);
592
        nb_frames = 0;
593
        for(n=0;n<s->nb_streams;n++) {
594
            if (avi->frames_hdr_strm[n] != 0) {
595
                stream = &s->streams[n]->codec;
596
                url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);
597
                parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
598
                if (au_ssize == 0) {
599
                    put_le32(pb, stream->frame_number);
600
                    nb_frames += stream->frame_number;
601
                } else {
602
                    put_le32(pb, avi->audio_strm_length[n] / au_ssize);
603
                }
604
            }
605
       }
606
       if (avi->frames_hdr_all != 0) {
607
           url_fseek(pb, avi->frames_hdr_all, SEEK_SET);
608
           put_le32(pb, nb_frames); 
609
       }
610
       url_fseek(pb, file_size, SEEK_SET);
611
    }
612
    return 0;
613
}
614

    
615
static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
616
{
617
    AVIContext *avi = s->priv_data;
618
    ByteIOContext *pb = &s->pb;
619
    unsigned char tag[5];
620
    unsigned int flags=0;
621
    const int stream_index= pkt->stream_index;
622
    AVCodecContext *enc= &s->streams[stream_index]->codec;
623
    int size= pkt->size;
624

    
625
//    av_log(s, AV_LOG_DEBUG, "%lld %d %d\n", pkt->dts, avi->packet_count[stream_index], stream_index);
626
    while(enc->codec_type == CODEC_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE && pkt->dts > avi->packet_count[stream_index]){
627
        AVPacket empty_packet;
628

    
629
        av_init_packet(&empty_packet);
630
        empty_packet.size= 0;
631
        empty_packet.data= NULL;
632
        empty_packet.stream_index= stream_index;
633
        avi_write_packet(s, &empty_packet);
634
//        av_log(s, AV_LOG_DEBUG, "dup %lld %d\n", pkt->dts, avi->packet_count[stream_index]);
635
    }
636
    avi->packet_count[stream_index]++;
637

    
638
    if (url_ftell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE) { 
639
        avi_write_ix(s);
640
        end_tag(pb, avi->movi_list);
641
        
642
        if (avi->riff_id == 1)
643
            avi_write_idx1(s);
644

    
645
        end_tag(pb, avi->riff_start);
646
        avi->movi_list = avi_start_new_riff(avi, pb, "AVIX", "movi");
647
    }
648
    
649
    avi_stream2fourcc(&tag[0], stream_index, enc->codec_type);
650
    if(pkt->flags&PKT_FLAG_KEY)
651
        flags = 0x10;
652
    if (enc->codec_type == CODEC_TYPE_AUDIO) {
653
       avi->audio_strm_length[stream_index] += size;
654
    }
655

    
656
    if (!url_is_streamed(&s->pb)) {
657
        AVIIndex* idx = &avi->indexes[stream_index];
658
        int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;
659
        int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;
660
        if (idx->ents_allocated <= idx->entry) {
661
            idx->cluster = av_realloc(idx->cluster, (cl+1)*sizeof(void*)); 
662
            if (!idx->cluster)
663
                return -1;
664
            idx->cluster[cl] = av_malloc(AVI_INDEX_CLUSTER_SIZE*sizeof(AVIIentry));
665
            if (!idx->cluster[cl])
666
                return -1;
667
            idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;
668
        }
669
         
670
        idx->cluster[cl][id].flags = flags; 
671
        idx->cluster[cl][id].pos = url_ftell(pb) - avi->movi_list;
672
        idx->cluster[cl][id].len = size;
673
        idx->entry++;
674
    }
675
    
676
    put_buffer(pb, tag, 4);
677
    put_le32(pb, size);
678
    put_buffer(pb, pkt->data, size);
679
    if (size & 1)
680
        put_byte(pb, 0);
681

    
682
    put_flush_packet(pb);
683
    return 0;
684
}
685

    
686
static int avi_write_trailer(AVFormatContext *s)
687
{
688
    AVIContext *avi = s->priv_data;
689
    ByteIOContext *pb = &s->pb;
690
    int res = 0;
691
    int i, j, n, nb_frames;
692
    offset_t file_size;
693

    
694
    if (avi->riff_id == 1) {
695
        end_tag(pb, avi->movi_list);
696
        res = avi_write_idx1(s);
697
        end_tag(pb, avi->riff_start);
698
    } else {
699
        avi_write_ix(s);
700
        end_tag(pb, avi->movi_list);
701
        end_tag(pb, avi->riff_start);
702

    
703
        file_size = url_ftell(pb);
704
        url_fseek(pb, avi->odml_list - 8, SEEK_SET);
705
        put_tag(pb, "LIST"); /* Making this AVI OpenDML one */
706
        url_fskip(pb, 16);
707

    
708
        for (n=nb_frames=0;n<s->nb_streams;n++) {
709
             AVCodecContext *stream = &s->streams[n]->codec;
710
             if (stream->codec_type == CODEC_TYPE_VIDEO) {
711
                 if (nb_frames < stream->frame_number)
712
                     nb_frames = stream->frame_number;
713
             } else {
714
                 if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3) {
715
                     nb_frames += stream->frame_number;
716
                }
717
            }
718
        }
719
        put_le32(pb, nb_frames);
720
        url_fseek(pb, file_size, SEEK_SET);
721
    }
722
    put_flush_packet(pb);
723

    
724
    for (i=0; i<MAX_STREAMS; i++) {
725
         for (j=0; j<avi->indexes[i].ents_allocated/AVI_INDEX_CLUSTER_SIZE; j++)
726
              av_free(avi->indexes[i].cluster[j]);
727
         av_free(avi->indexes[i].cluster);
728
         avi->indexes[i].cluster = NULL;
729
         avi->indexes[i].ents_allocated = avi->indexes[i].entry = 0;
730
    }
731
    
732
    return res;
733
}
734

    
735
static AVOutputFormat avi_oformat = {
736
    "avi",
737
    "avi format",
738
    "video/x-msvideo",
739
    "avi",
740
    sizeof(AVIContext),
741
    CODEC_ID_MP2,
742
    CODEC_ID_MPEG4,
743
    avi_write_header,
744
    avi_write_packet,
745
    avi_write_trailer,
746
};
747

    
748
int avienc_init(void)
749
{
750
    av_register_output_format(&avi_oformat);
751
    return 0;
752
}
753
#endif //CONFIG_ENCODERS