2
* "Real" compatible muxer and demuxer.
3
* Copyright (c) 2000, 2001 Fabrice Bellard.
5
* This file is part of FFmpeg.
7
* FFmpeg is free software; you can redistribute it and/or
8
* modify it under the terms of the GNU Lesser General Public
9
* License as published by the Free Software Foundation; either
10
* version 2.1 of the License, or (at your option) any later version.
12
* FFmpeg is distributed in the hope that it will be useful,
13
* but WITHOUT ANY WARRANTY; without even the implied warranty of
14
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15
* Lesser General Public License for more details.
17
* You should have received a copy of the GNU Lesser General Public
18
* License along with FFmpeg; if not, write to the Free Software
19
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24
#define BUFFER_DURATION 0
28
int packet_total_size;
30
/* codec related output */
33
int nb_frames; /* current frame number */
34
int total_frames; /* total number of frames */
40
StreamInfo streams[2];
41
StreamInfo *audio_stream, *video_stream;
42
int data_pos; /* position of the data after the header */
47
/// Audio descrambling matrix parameters
48
uint8_t *audiobuf; ///< place to store reordered audio data
49
int64_t audiotimestamp; ///< Audio packet timestamp
50
int sub_packet_cnt; // Subpacket counter, used while reading
51
int sub_packet_size, sub_packet_h, coded_framesize; ///< Descrambling parameters from container
52
int audio_stream_num; ///< Stream number for audio packets
53
int audio_pkt_cnt; ///< Output packet counter
54
int audio_framesize; /// Audio frame size from container
55
int sub_packet_lengths[16]; /// Length of each aac subpacket
59
static void put_str(ByteIOContext *s, const char *tag)
61
put_be16(s,strlen(tag));
67
static void put_str8(ByteIOContext *s, const char *tag)
69
put_byte(s, strlen(tag));
75
static void rv10_write_header(AVFormatContext *ctx,
76
int data_size, int index_pos)
78
RMContext *rm = ctx->priv_data;
79
ByteIOContext *s = &ctx->pb;
81
unsigned char *data_offset_ptr, *start_ptr;
82
const char *desc, *mimetype;
83
int nb_packets, packet_total_size, packet_max_size, size, packet_avg_size, i;
84
int bit_rate, v, duration, flags, data_pos;
86
start_ptr = s->buf_ptr;
89
put_be32(s,18); /* header size */
92
put_be32(s,4 + ctx->nb_streams); /* num headers */
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packet_total_size = 0;
102
for(i=0;i<ctx->nb_streams;i++) {
103
StreamInfo *stream = &rm->streams[i];
104
bit_rate += stream->bit_rate;
105
if (stream->packet_max_size > packet_max_size)
106
packet_max_size = stream->packet_max_size;
107
nb_packets += stream->nb_packets;
108
packet_total_size += stream->packet_total_size;
109
/* select maximum duration */
110
v = (int) (1000.0 * (float)stream->total_frames / stream->frame_rate);
114
put_be32(s, bit_rate); /* max bit rate */
115
put_be32(s, bit_rate); /* avg bit rate */
116
put_be32(s, packet_max_size); /* max packet size */
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packet_avg_size = packet_total_size / nb_packets;
121
put_be32(s, packet_avg_size); /* avg packet size */
122
put_be32(s, nb_packets); /* num packets */
123
put_be32(s, duration); /* duration */
124
put_be32(s, BUFFER_DURATION); /* preroll */
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put_be32(s, index_pos); /* index offset */
126
/* computation of data the data offset */
127
data_offset_ptr = s->buf_ptr;
128
put_be32(s, 0); /* data offset : will be patched after */
129
put_be16(s, ctx->nb_streams); /* num streams */
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flags = 1 | 2; /* save allowed & perfect play */
131
if (url_is_streamed(s))
132
flags |= 4; /* live broadcast */
138
size = strlen(ctx->title) + strlen(ctx->author) + strlen(ctx->copyright) +
139
strlen(ctx->comment) + 4 * 2 + 10;
142
put_str(s, ctx->title);
143
put_str(s, ctx->author);
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put_str(s, ctx->copyright);
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put_str(s, ctx->comment);
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for(i=0;i<ctx->nb_streams;i++) {
150
stream = &rm->streams[i];
152
if (stream->enc->codec_type == CODEC_TYPE_AUDIO) {
153
desc = "The Audio Stream";
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mimetype = "audio/x-pn-realaudio";
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codec_data_size = 73;
157
desc = "The Video Stream";
158
mimetype = "video/x-pn-realvideo";
159
codec_data_size = 34;
163
size = 10 + 9 * 4 + strlen(desc) + strlen(mimetype) + codec_data_size;
167
put_be16(s, i); /* stream number */
168
put_be32(s, stream->bit_rate); /* max bit rate */
169
put_be32(s, stream->bit_rate); /* avg bit rate */
170
put_be32(s, stream->packet_max_size); /* max packet size */
171
if (stream->nb_packets > 0)
172
packet_avg_size = stream->packet_total_size /
176
put_be32(s, packet_avg_size); /* avg packet size */
177
put_be32(s, 0); /* start time */
178
put_be32(s, BUFFER_DURATION); /* preroll */
180
if (url_is_streamed(s) || !stream->total_frames)
181
put_be32(s, (int)(3600 * 1000));
183
put_be32(s, (int)(stream->total_frames * 1000 / stream->frame_rate));
185
put_str8(s, mimetype);
186
put_be32(s, codec_data_size);
188
if (stream->enc->codec_type == CODEC_TYPE_AUDIO) {
189
int coded_frame_size, fscode, sample_rate;
190
sample_rate = stream->enc->sample_rate;
191
coded_frame_size = (stream->enc->bit_rate *
192
stream->enc->frame_size) / (8 * sample_rate);
193
/* audio codec info */
196
put_be32(s, 0x00040000); /* version */
198
put_be32(s, 0x01b53530); /* stream length */
199
put_be16(s, 4); /* unknown */
200
put_be32(s, 0x39); /* header size */
202
switch(sample_rate) {
219
put_be16(s, fscode); /* codec additional info, for AC3, seems
220
to be a frequency code */
221
/* special hack to compensate rounding errors... */
222
if (coded_frame_size == 557)
224
put_be32(s, coded_frame_size); /* frame length */
225
put_be32(s, 0x51540); /* unknown */
226
put_be32(s, 0x249f0); /* unknown */
227
put_be32(s, 0x249f0); /* unknown */
229
/* frame length : seems to be very important */
230
put_be16(s, coded_frame_size);
231
put_be32(s, 0); /* unknown */
232
put_be16(s, stream->enc->sample_rate); /* sample rate */
233
put_be32(s, 0x10); /* unknown */
234
put_be16(s, stream->enc->channels);
235
put_str8(s, "Int0"); /* codec name */
236
put_str8(s, "dnet"); /* codec name */
237
put_be16(s, 0); /* title length */
238
put_be16(s, 0); /* author length */
239
put_be16(s, 0); /* copyright length */
240
put_byte(s, 0); /* end of header */
242
/* video codec info */
243
put_be32(s,34); /* size */
244
if(stream->enc->codec_id == CODEC_ID_RV10)
245
put_tag(s,"VIDORV10");
247
put_tag(s,"VIDORV20");
248
put_be16(s, stream->enc->width);
249
put_be16(s, stream->enc->height);
250
put_be16(s, (int) stream->frame_rate); /* frames per seconds ? */
251
put_be32(s,0); /* unknown meaning */
252
put_be16(s, (int) stream->frame_rate); /* unknown meaning */
253
put_be32(s,0); /* unknown meaning */
254
put_be16(s, 8); /* unknown meaning */
255
/* Seems to be the codec version: only use basic H263. The next
256
versions seems to add a diffential DC coding as in
257
MPEG... nothing new under the sun */
258
if(stream->enc->codec_id == CODEC_ID_RV10)
259
put_be32(s,0x10000000);
261
put_be32(s,0x20103001);
262
//put_be32(s,0x10003000);
266
/* patch data offset field */
267
data_pos = s->buf_ptr - start_ptr;
268
rm->data_pos = data_pos;
269
data_offset_ptr[0] = data_pos >> 24;
270
data_offset_ptr[1] = data_pos >> 16;
271
data_offset_ptr[2] = data_pos >> 8;
272
data_offset_ptr[3] = data_pos;
276
put_be32(s,data_size + 10 + 8);
279
put_be32(s, nb_packets); /* number of packets */
280
put_be32(s,0); /* next data header */
283
static void write_packet_header(AVFormatContext *ctx, StreamInfo *stream,
284
int length, int key_frame)
287
ByteIOContext *s = &ctx->pb;
289
stream->nb_packets++;
290
stream->packet_total_size += length;
291
if (length > stream->packet_max_size)
292
stream->packet_max_size = length;
294
put_be16(s,0); /* version */
295
put_be16(s,length + 12);
296
put_be16(s, stream->num); /* stream number */
297
timestamp = (1000 * (float)stream->nb_frames) / stream->frame_rate;
298
put_be32(s, timestamp); /* timestamp */
299
put_byte(s, 0); /* reserved */
300
put_byte(s, key_frame ? 2 : 0); /* flags */
303
static int rm_write_header(AVFormatContext *s)
305
RMContext *rm = s->priv_data;
308
AVCodecContext *codec;
310
for(n=0;n<s->nb_streams;n++) {
311
s->streams[n]->id = n;
312
codec = s->streams[n]->codec;
313
stream = &rm->streams[n];
314
memset(stream, 0, sizeof(StreamInfo));
316
stream->bit_rate = codec->bit_rate;
319
switch(codec->codec_type) {
320
case CODEC_TYPE_AUDIO:
321
rm->audio_stream = stream;
322
stream->frame_rate = (float)codec->sample_rate / (float)codec->frame_size;
323
/* XXX: dummy values */
324
stream->packet_max_size = 1024;
325
stream->nb_packets = 0;
326
stream->total_frames = stream->nb_packets;
328
case CODEC_TYPE_VIDEO:
329
rm->video_stream = stream;
330
stream->frame_rate = (float)codec->time_base.den / (float)codec->time_base.num;
331
/* XXX: dummy values */
332
stream->packet_max_size = 4096;
333
stream->nb_packets = 0;
334
stream->total_frames = stream->nb_packets;
341
rv10_write_header(s, 0, 0);
342
put_flush_packet(&s->pb);
346
static int rm_write_audio(AVFormatContext *s, const uint8_t *buf, int size, int flags)
349
RMContext *rm = s->priv_data;
350
ByteIOContext *pb = &s->pb;
351
StreamInfo *stream = rm->audio_stream;
354
/* XXX: suppress this malloc */
355
buf1= (uint8_t*) av_malloc( size * sizeof(uint8_t) );
357
write_packet_header(s, stream, size, !!(flags & PKT_FLAG_KEY));
359
/* for AC3, the words seems to be reversed */
360
for(i=0;i<size;i+=2) {
364
put_buffer(pb, buf1, size);
365
put_flush_packet(pb);
371
static int rm_write_video(AVFormatContext *s, const uint8_t *buf, int size, int flags)
373
RMContext *rm = s->priv_data;
374
ByteIOContext *pb = &s->pb;
375
StreamInfo *stream = rm->video_stream;
376
int key_frame = !!(flags & PKT_FLAG_KEY);
378
/* XXX: this is incorrect: should be a parameter */
380
/* Well, I spent some time finding the meaning of these bits. I am
381
not sure I understood everything, but it works !! */
383
write_packet_header(s, stream, size + 7, key_frame);
384
/* bit 7: '1' if final packet of a frame converted in several packets */
386
/* bit 7: '1' if I frame. bits 6..0 : sequence number in current
387
frame starting from 1 */
393
put_be16(pb, 0x4000 + (size)); /* total frame size */
394
put_be16(pb, 0x4000 + (size)); /* offset from the start or the end */
397
write_packet_header(s, size + 6);
399
put_be16(pb, 0x4000 + size); /* total frame size */
400
put_be16(pb, 0x4000 + packet_number * 126); /* position in stream */
402
put_byte(pb, stream->nb_frames & 0xff);
404
put_buffer(pb, buf, size);
405
put_flush_packet(pb);
411
static int rm_write_packet(AVFormatContext *s, AVPacket *pkt)
413
if (s->streams[pkt->stream_index]->codec->codec_type ==
415
return rm_write_audio(s, pkt->data, pkt->size, pkt->flags);
417
return rm_write_video(s, pkt->data, pkt->size, pkt->flags);
420
static int rm_write_trailer(AVFormatContext *s)
422
RMContext *rm = s->priv_data;
423
int data_size, index_pos, i;
424
ByteIOContext *pb = &s->pb;
426
if (!url_is_streamed(&s->pb)) {
427
/* end of file: finish to write header */
428
index_pos = url_fseek(pb, 0, SEEK_CUR);
429
data_size = index_pos - rm->data_pos;
433
put_be32(pb, 10 + 10 * s->nb_streams);
436
for(i=0;i<s->nb_streams;i++) {
437
put_be32(pb, 0); /* zero indices */
438
put_be16(pb, i); /* stream number */
439
put_be32(pb, 0); /* next index */
441
/* undocumented end header */
445
url_fseek(pb, 0, SEEK_SET);
446
for(i=0;i<s->nb_streams;i++)
447
rm->streams[i].total_frames = rm->streams[i].nb_frames;
448
rv10_write_header(s, data_size, index_pos);
450
/* undocumented end header */
454
put_flush_packet(pb);
457
#endif //CONFIG_MUXERS
459
/***************************************************/
461
static void get_str(ByteIOContext *pb, char *buf, int buf_size)
469
if (i < buf_size - 1)
475
static void get_str8(ByteIOContext *pb, char *buf, int buf_size)
483
if (i < buf_size - 1)
489
static int rm_read_audio_stream_info(AVFormatContext *s, AVStream *st,
492
RMContext *rm = s->priv_data;
493
ByteIOContext *pb = &s->pb;
499
version = get_be32(pb); /* version */
500
if (((version >> 16) & 0xff) == 3) {
501
int64_t startpos = url_ftell(pb);
502
/* very old version */
503
for(i = 0; i < 14; i++)
505
get_str8(pb, s->title, sizeof(s->title));
506
get_str8(pb, s->author, sizeof(s->author));
507
get_str8(pb, s->copyright, sizeof(s->copyright));
508
get_str8(pb, s->comment, sizeof(s->comment));
509
if ((startpos + (version & 0xffff)) >= url_ftell(pb) + 2) {
510
// fourcc (should always be "lpcJ")
512
get_str8(pb, buf, sizeof(buf));
514
// Skip extra header crap (this should never happen)
515
if ((startpos + (version & 0xffff)) > url_ftell(pb))
516
url_fskip(pb, (version & 0xffff) + startpos - url_ftell(pb));
517
st->codec->sample_rate = 8000;
518
st->codec->channels = 1;
519
st->codec->codec_type = CODEC_TYPE_AUDIO;
520
st->codec->codec_id = CODEC_ID_RA_144;
522
int flavor, sub_packet_h, coded_framesize, sub_packet_size;
523
/* old version (4) */
524
get_be32(pb); /* .ra4 */
525
get_be32(pb); /* data size */
526
get_be16(pb); /* version2 */
527
get_be32(pb); /* header size */
528
flavor= get_be16(pb); /* add codec info / flavor */
529
rm->coded_framesize = coded_framesize = get_be32(pb); /* coded frame size */
530
get_be32(pb); /* ??? */
531
get_be32(pb); /* ??? */
532
get_be32(pb); /* ??? */
533
rm->sub_packet_h = sub_packet_h = get_be16(pb); /* 1 */
534
st->codec->block_align= get_be16(pb); /* frame size */
535
rm->sub_packet_size = sub_packet_size = get_be16(pb); /* sub packet size */
536
get_be16(pb); /* ??? */
537
if (((version >> 16) & 0xff) == 5) {
538
get_be16(pb); get_be16(pb); get_be16(pb); }
539
st->codec->sample_rate = get_be16(pb);
541
st->codec->channels = get_be16(pb);
542
if (((version >> 16) & 0xff) == 5) {
544
buf[0] = get_byte(pb);
545
buf[1] = get_byte(pb);
546
buf[2] = get_byte(pb);
547
buf[3] = get_byte(pb);
550
get_str8(pb, buf, sizeof(buf)); /* desc */
551
get_str8(pb, buf, sizeof(buf)); /* desc */
553
st->codec->codec_type = CODEC_TYPE_AUDIO;
554
if (!strcmp(buf, "dnet")) {
555
st->codec->codec_id = CODEC_ID_AC3;
556
} else if (!strcmp(buf, "28_8")) {
557
st->codec->codec_id = CODEC_ID_RA_288;
558
st->codec->extradata_size= 0;
559
rm->audio_framesize = st->codec->block_align;
560
st->codec->block_align = coded_framesize;
562
if(rm->audio_framesize >= UINT_MAX / sub_packet_h){
563
av_log(s, AV_LOG_ERROR, "rm->audio_framesize * sub_packet_h too large\n");
567
rm->audiobuf = av_malloc(rm->audio_framesize * sub_packet_h);
568
} else if (!strcmp(buf, "cook")) {
569
int codecdata_length, i;
570
get_be16(pb); get_byte(pb);
571
if (((version >> 16) & 0xff) == 5)
573
codecdata_length = get_be32(pb);
574
if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
575
av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
579
st->codec->codec_id = CODEC_ID_COOK;
580
st->codec->extradata_size= codecdata_length;
581
st->codec->extradata= av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
582
for(i = 0; i < codecdata_length; i++)
583
((uint8_t*)st->codec->extradata)[i] = get_byte(pb);
584
rm->audio_framesize = st->codec->block_align;
585
st->codec->block_align = rm->sub_packet_size;
587
if(rm->audio_framesize >= UINT_MAX / sub_packet_h){
588
av_log(s, AV_LOG_ERROR, "rm->audio_framesize * sub_packet_h too large\n");
592
rm->audiobuf = av_malloc(rm->audio_framesize * sub_packet_h);
593
} else if (!strcmp(buf, "raac") || !strcmp(buf, "racp")) {
594
int codecdata_length, i;
595
get_be16(pb); get_byte(pb);
596
if (((version >> 16) & 0xff) == 5)
598
st->codec->codec_id = CODEC_ID_AAC;
599
codecdata_length = get_be32(pb);
600
if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
601
av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
604
if (codecdata_length >= 1) {
605
st->codec->extradata_size = codecdata_length - 1;
606
st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
608
for(i = 0; i < st->codec->extradata_size; i++)
609
((uint8_t*)st->codec->extradata)[i] = get_byte(pb);
612
st->codec->codec_id = CODEC_ID_NONE;
613
pstrcpy(st->codec->codec_name, sizeof(st->codec->codec_name),
621
get_str8(pb, s->title, sizeof(s->title));
622
get_str8(pb, s->author, sizeof(s->author));
623
get_str8(pb, s->copyright, sizeof(s->copyright));
624
get_str8(pb, s->comment, sizeof(s->comment));
630
static int rm_read_header_old(AVFormatContext *s, AVFormatParameters *ap)
632
RMContext *rm = s->priv_data;
636
st = av_new_stream(s, 0);
639
return rm_read_audio_stream_info(s, st, 1);
642
static int rm_read_header(AVFormatContext *s, AVFormatParameters *ap)
644
RMContext *rm = s->priv_data;
646
ByteIOContext *pb = &s->pb;
648
int tag_size, size, codec_data_size, i;
650
unsigned int start_time, duration;
655
if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
656
/* very old .ra format */
657
return rm_read_header_old(s, ap);
658
} else if (tag != MKTAG('.', 'R', 'M', 'F')) {
662
get_be32(pb); /* header size */
665
get_be32(pb); /* number of headers */
671
tag_size = get_be32(pb);
674
printf("tag=%c%c%c%c (%08x) size=%d\n",
682
if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
685
case MKTAG('P', 'R', 'O', 'P'):
687
get_be32(pb); /* max bit rate */
688
get_be32(pb); /* avg bit rate */
689
get_be32(pb); /* max packet size */
690
get_be32(pb); /* avg packet size */
691
get_be32(pb); /* nb packets */
692
get_be32(pb); /* duration */
693
get_be32(pb); /* preroll */
694
get_be32(pb); /* index offset */
695
get_be32(pb); /* data offset */
696
get_be16(pb); /* nb streams */
697
flags = get_be16(pb); /* flags */
699
case MKTAG('C', 'O', 'N', 'T'):
700
get_str(pb, s->title, sizeof(s->title));
701
get_str(pb, s->author, sizeof(s->author));
702
get_str(pb, s->copyright, sizeof(s->copyright));
703
get_str(pb, s->comment, sizeof(s->comment));
705
case MKTAG('M', 'D', 'P', 'R'):
706
st = av_new_stream(s, 0);
709
st->id = get_be16(pb);
710
get_be32(pb); /* max bit rate */
711
st->codec->bit_rate = get_be32(pb); /* bit rate */
712
get_be32(pb); /* max packet size */
713
get_be32(pb); /* avg packet size */
714
start_time = get_be32(pb); /* start time */
715
get_be32(pb); /* preroll */
716
duration = get_be32(pb); /* duration */
717
st->start_time = start_time;
718
st->duration = duration;
719
get_str8(pb, buf, sizeof(buf)); /* desc */
720
get_str8(pb, buf, sizeof(buf)); /* mimetype */
721
codec_data_size = get_be32(pb);
722
codec_pos = url_ftell(pb);
723
st->codec->codec_type = CODEC_TYPE_DATA;
724
av_set_pts_info(st, 64, 1, 1000);
727
if (v == MKTAG(0xfd, 'a', 'r', '.')) {
729
if (rm_read_audio_stream_info(s, st, 0))
733
if (get_le32(pb) != MKTAG('V', 'I', 'D', 'O')) {
735
av_log(st->codec, AV_LOG_ERROR, "Unsupported video codec\n");
738
st->codec->codec_tag = get_le32(pb);
739
// av_log(NULL, AV_LOG_DEBUG, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
740
if ( st->codec->codec_tag != MKTAG('R', 'V', '1', '0')
741
&& st->codec->codec_tag != MKTAG('R', 'V', '2', '0')
742
&& st->codec->codec_tag != MKTAG('R', 'V', '3', '0')
743
&& st->codec->codec_tag != MKTAG('R', 'V', '4', '0'))
745
st->codec->width = get_be16(pb);
746
st->codec->height = get_be16(pb);
747
st->codec->time_base.num= 1;
749
st->codec->codec_type = CODEC_TYPE_VIDEO;
754
st->codec->extradata_size= codec_data_size - (url_ftell(pb) - codec_pos);
756
if(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)st->codec->extradata_size){
757
//check is redundant as get_buffer() will catch this
758
av_log(s, AV_LOG_ERROR, "st->codec->extradata_size too large\n");
761
st->codec->extradata= av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
762
get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
764
// av_log(NULL, AV_LOG_DEBUG, "fps= %d fps2= %d\n", fps, fps2);
765
st->codec->time_base.den = fps * st->codec->time_base.num;
766
switch(((uint8_t*)st->codec->extradata)[4]>>4){
767
case 1: st->codec->codec_id = CODEC_ID_RV10; break;
768
case 2: st->codec->codec_id = CODEC_ID_RV20; break;
769
case 3: st->codec->codec_id = CODEC_ID_RV30; break;
770
case 4: st->codec->codec_id = CODEC_ID_RV40; break;
775
/* skip codec info */
776
size = url_ftell(pb) - codec_pos;
777
url_fskip(pb, codec_data_size - size);
779
case MKTAG('D', 'A', 'T', 'A'):
782
/* unknown tag: skip it */
783
url_fskip(pb, tag_size - 10);
788
rm->nb_packets = get_be32(pb); /* number of packets */
789
if (!rm->nb_packets && (flags & 4))
790
rm->nb_packets = 3600 * 25;
791
get_be32(pb); /* next data header */
795
for(i=0;i<s->nb_streams;i++) {
796
av_free(s->streams[i]);
801
static int get_num(ByteIOContext *pb, int *len)
812
return (n << 16) | n1;
816
/* multiple of 20 bytes for ra144 (ugly) */
817
#define RAW_PACKET_SIZE 1000
819
static int sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
820
RMContext *rm = s->priv_data;
821
ByteIOContext *pb = &s->pb;
822
int len, num, res, i;
824
uint32_t state=0xFFFFFFFF;
826
while(!url_feof(pb)){
828
if(rm->remaining_len > 0){
829
num= rm->current_stream;
830
len= rm->remaining_len;
831
*timestamp = AV_NOPTS_VALUE;
834
state= (state<<8) + get_byte(pb);
836
if(state == MKBETAG('I', 'N', 'D', 'X')){
837
len = get_be16(pb) - 6;
843
if(state > (unsigned)0xFFFF || state < 12)
849
*timestamp = get_be32(pb);
850
res= get_byte(pb); /* reserved */
851
*flags = get_byte(pb); /* flags */
856
for(i=0;i<s->nb_streams;i++) {
861
if (i == s->nb_streams) {
863
/* skip packet if unknown number */
865
rm->remaining_len -= len;
875
static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
877
RMContext *rm = s->priv_data;
878
ByteIOContext *pb = &s->pb;
881
int64_t timestamp, pos;
885
if (rm->audio_pkt_cnt) {
886
// If there are queued audio packet return them first
887
st = s->streams[rm->audio_stream_num];
888
if (st->codec->codec_id == CODEC_ID_AAC)
889
av_get_packet(pb, pkt, rm->sub_packet_lengths[rm->sub_packet_cnt - rm->audio_pkt_cnt]);
891
av_new_packet(pkt, st->codec->block_align);
892
memcpy(pkt->data, rm->audiobuf + st->codec->block_align *
893
(rm->sub_packet_h * rm->audio_framesize / st->codec->block_align - rm->audio_pkt_cnt),
894
st->codec->block_align);
898
pkt->stream_index = rm->audio_stream_num;
899
} else if (rm->old_format) {
901
if (st->codec->codec_id == CODEC_ID_RA_288) {
904
for (y = 0; y < rm->sub_packet_h; y++)
905
for (x = 0; x < rm->sub_packet_h/2; x++)
906
if (get_buffer(pb, rm->audiobuf+x*2*rm->audio_framesize+y*rm->coded_framesize, rm->coded_framesize) <= 0)
908
rm->audio_stream_num = 0;
909
rm->audio_pkt_cnt = rm->sub_packet_h * rm->audio_framesize / st->codec->block_align - 1;
910
// Release first audio packet
911
av_new_packet(pkt, st->codec->block_align);
912
memcpy(pkt->data, rm->audiobuf, st->codec->block_align);
913
pkt->flags |= PKT_FLAG_KEY; // Mark first packet as keyframe
914
pkt->stream_index = 0;
916
/* just read raw bytes */
917
len = RAW_PACKET_SIZE;
918
len= av_get_packet(pb, pkt, len);
919
pkt->stream_index = 0;
928
len=sync(s, ×tamp, &flags, &i, &pos);
933
if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
934
int h, pic_num, len2, pos;
936
h= get_byte(pb); len--;
938
seq = get_byte(pb); len--;
941
if((h & 0xc0) == 0x40){
944
len2 = get_num(pb, &len);
945
pos = get_num(pb, &len);
948
pic_num= get_byte(pb); len--;
949
rm->remaining_len= len;
950
rm->current_stream= st->id;
952
// av_log(NULL, AV_LOG_DEBUG, "%X len:%d pos:%d len2:%d pic_num:%d\n",h, len, pos, len2, pic_num);
955
rm->remaining_len-= len;
956
av_get_packet(pb, pkt, len);
959
if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
960
if ((st->codec->codec_id == CODEC_ID_RA_288) ||
961
(st->codec->codec_id == CODEC_ID_COOK)) {
963
int sps = rm->sub_packet_size;
964
int cfs = rm->coded_framesize;
965
int h = rm->sub_packet_h;
966
int y = rm->sub_packet_cnt;
967
int w = rm->audio_framesize;
970
y = rm->sub_packet_cnt = 0;
972
rm->audiotimestamp = timestamp;
974
switch(st->codec->codec_id) {
975
case CODEC_ID_RA_288:
976
for (x = 0; x < h/2; x++)
977
get_buffer(pb, rm->audiobuf+x*2*w+y*cfs, cfs);
980
for (x = 0; x < w/sps; x++)
981
get_buffer(pb, rm->audiobuf+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
985
if (++(rm->sub_packet_cnt) < h)
988
rm->sub_packet_cnt = 0;
989
rm->audio_stream_num = i;
990
rm->audio_pkt_cnt = h * w / st->codec->block_align - 1;
991
// Release first audio packet
992
av_new_packet(pkt, st->codec->block_align);
993
memcpy(pkt->data, rm->audiobuf, st->codec->block_align);
994
timestamp = rm->audiotimestamp;
995
flags = 2; // Mark first packet as keyframe
997
} else if (st->codec->codec_id == CODEC_ID_AAC) {
999
rm->audio_stream_num = i;
1000
rm->sub_packet_cnt = (get_be16(pb) & 0xf0) >> 4;
1001
if (rm->sub_packet_cnt) {
1002
for (x = 0; x < rm->sub_packet_cnt; x++)
1003
rm->sub_packet_lengths[x] = get_be16(pb);
1004
// Release first audio packet
1005
rm->audio_pkt_cnt = rm->sub_packet_cnt - 1;
1006
av_get_packet(pb, pkt, rm->sub_packet_lengths[0]);
1007
flags = 2; // Mark first packet as keyframe
1010
av_get_packet(pb, pkt, len);
1013
if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1014
|| st->discard >= AVDISCARD_ALL){
1015
av_free_packet(pkt);
1019
pkt->stream_index = i;
1022
if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1023
if(st->codec->codec_id == CODEC_ID_RV20){
1024
int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1);
1025
av_log(NULL, AV_LOG_DEBUG, "%d %"PRId64" %d\n", timestamp, timestamp*512LL/25, seq);
1027
seq |= (timestamp&~0x3FFF);
1028
if(seq - timestamp > 0x2000) seq -= 0x4000;
1029
if(seq - timestamp < -0x2000) seq += 0x4000;
1033
pkt->pts= timestamp;
1035
pkt->flags |= PKT_FLAG_KEY;
1037
av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1041
/* for AC3, needs to swap bytes */
1042
if (st->codec->codec_id == CODEC_ID_AC3) {
1044
for(j=0;j<len;j+=2) {
1054
static int rm_read_close(AVFormatContext *s)
1056
RMContext *rm = s->priv_data;
1058
av_free(rm->audiobuf);
1062
static int rm_probe(AVProbeData *p)
1064
/* check file header */
1065
if (p->buf_size <= 32)
1067
if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1068
p->buf[2] == 'M' && p->buf[3] == 'F' &&
1069
p->buf[4] == 0 && p->buf[5] == 0) ||
1070
(p->buf[0] == '.' && p->buf[1] == 'r' &&
1071
p->buf[2] == 'a' && p->buf[3] == 0xfd))
1072
return AVPROBE_SCORE_MAX;
1077
static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1078
int64_t *ppos, int64_t pos_limit)
1080
RMContext *rm = s->priv_data;
1082
int stream_index2, flags, len, h;
1087
return AV_NOPTS_VALUE;
1089
url_fseek(&s->pb, pos, SEEK_SET);
1090
rm->remaining_len=0;
1095
len=sync(s, &dts, &flags, &stream_index2, &pos);
1097
return AV_NOPTS_VALUE;
1099
st = s->streams[stream_index2];
1100
if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1101
h= get_byte(&s->pb); len--;
1103
seq = get_byte(&s->pb); len--;
1107
if((flags&2) && (seq&0x7F) == 1){
1108
// av_log(s, AV_LOG_DEBUG, "%d %d-%d %"PRId64" %d\n", flags, stream_index2, stream_index, dts, seq);
1109
av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1110
if(stream_index2 == stream_index)
1114
url_fskip(&s->pb, len);
1120
#ifdef CONFIG_RM_DEMUXER
1121
AVInputFormat rm_demuxer = {
1133
#ifdef CONFIG_RM_MUXER
1134
AVOutputFormat rm_muxer = {
1137
"application/vnd.rn-realmedia",