2 * "Real" compatible 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
22 #include "libavutil/avassert.h"
23 #include "libavutil/avstring.h"
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/dict.h"
32 #define DEINT_ID_GENR MKTAG('g', 'e', 'n', 'r') ///< interleaving for Cooker/Atrac
33 #define DEINT_ID_INT0 MKTAG('I', 'n', 't', '0') ///< no interleaving needed
34 #define DEINT_ID_INT4 MKTAG('I', 'n', 't', '4') ///< interleaving for 28.8
35 #define DEINT_ID_SIPR MKTAG('s', 'i', 'p', 'r') ///< interleaving for Sipro
36 #define DEINT_ID_VBRF MKTAG('v', 'b', 'r', 'f') ///< VBR case for AAC
37 #define DEINT_ID_VBRS MKTAG('v', 'b', 'r', 's') ///< VBR case for AAC
40 AVPacket pkt; ///< place to store merged video frame / reordered audio data
41 int videobufsize; ///< current assembled frame size
42 int videobufpos; ///< position for the next slice in the video buffer
43 int curpic_num; ///< picture number of current frame
44 int cur_slice, slices;
45 int64_t pktpos; ///< first slice position in file
46 /// Audio descrambling matrix parameters
47 int64_t audiotimestamp; ///< Audio packet timestamp
48 int sub_packet_cnt; // Subpacket counter, used while reading
49 int sub_packet_size, sub_packet_h, coded_framesize; ///< Descrambling parameters from container
50 int audio_framesize; /// Audio frame size from container
51 int sub_packet_lengths[16]; /// Length of each subpacket
52 int32_t deint_id; ///< deinterleaver used in audio stream
60 int audio_stream_num; ///< Stream number for audio packets
61 int audio_pkt_cnt; ///< Output packet counter
64 static inline void get_strl(AVIOContext *pb, char *buf, int buf_size, int len)
75 if (buf_size > 0) *q = '\0';
78 static void get_str8(AVIOContext *pb, char *buf, int buf_size)
80 get_strl(pb, buf, buf_size, avio_r8(pb));
83 static int rm_read_extradata(AVIOContext *pb, AVCodecContext *avctx, unsigned size)
87 avctx->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
88 if (!avctx->extradata)
89 return AVERROR(ENOMEM);
90 avctx->extradata_size = avio_read(pb, avctx->extradata, size);
91 memset(avctx->extradata + avctx->extradata_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
92 if (avctx->extradata_size != size)
97 static void rm_read_metadata(AVFormatContext *s, int wide)
101 for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
102 int len = wide ? avio_rb16(s->pb) : avio_r8(s->pb);
103 get_strl(s->pb, buf, sizeof(buf), len);
104 av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
108 RMStream *ff_rm_alloc_rmstream (void)
110 RMStream *rms = av_mallocz(sizeof(RMStream));
111 rms->curpic_num = -1;
115 void ff_rm_free_rmstream (RMStream *rms)
117 av_free_packet(&rms->pkt);
120 static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
121 AVStream *st, RMStream *ast, int read_all)
128 version = avio_rb16(pb); /* version */
130 int header_size = avio_rb16(pb);
131 int64_t startpos = avio_tell(pb);
133 rm_read_metadata(s, 0);
134 if ((startpos + header_size) >= avio_tell(pb) + 2) {
135 // fourcc (should always be "lpcJ")
137 get_str8(pb, buf, sizeof(buf));
139 // Skip extra header crap (this should never happen)
140 if ((startpos + header_size) > avio_tell(pb))
141 avio_skip(pb, header_size + startpos - avio_tell(pb));
142 st->codec->sample_rate = 8000;
143 st->codec->channels = 1;
144 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
145 st->codec->codec_id = AV_CODEC_ID_RA_144;
146 ast->deint_id = DEINT_ID_INT0;
148 int flavor, sub_packet_h, coded_framesize, sub_packet_size;
149 int codecdata_length;
150 /* old version (4) */
151 avio_skip(pb, 2); /* unused */
152 avio_rb32(pb); /* .ra4 */
153 avio_rb32(pb); /* data size */
154 avio_rb16(pb); /* version2 */
155 avio_rb32(pb); /* header size */
156 flavor= avio_rb16(pb); /* add codec info / flavor */
157 ast->coded_framesize = coded_framesize = avio_rb32(pb); /* coded frame size */
158 avio_rb32(pb); /* ??? */
159 avio_rb32(pb); /* ??? */
160 avio_rb32(pb); /* ??? */
161 ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
162 st->codec->block_align= avio_rb16(pb); /* frame size */
163 ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
164 avio_rb16(pb); /* ??? */
166 avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
168 st->codec->sample_rate = avio_rb16(pb);
170 st->codec->channels = avio_rb16(pb);
172 ast->deint_id = avio_rl32(pb);
173 avio_read(pb, buf, 4);
176 get_str8(pb, buf, sizeof(buf)); /* desc */
177 ast->deint_id = AV_RL32(buf);
178 get_str8(pb, buf, sizeof(buf)); /* desc */
180 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
181 st->codec->codec_tag = AV_RL32(buf);
182 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
183 st->codec->codec_tag);
185 switch (st->codec->codec_id) {
186 case AV_CODEC_ID_AC3:
187 st->need_parsing = AVSTREAM_PARSE_FULL;
189 case AV_CODEC_ID_RA_288:
190 st->codec->extradata_size= 0;
191 ast->audio_framesize = st->codec->block_align;
192 st->codec->block_align = coded_framesize;
194 case AV_CODEC_ID_COOK:
195 st->need_parsing = AVSTREAM_PARSE_HEADERS;
196 case AV_CODEC_ID_ATRAC3:
197 case AV_CODEC_ID_SIPR:
198 avio_rb16(pb); avio_r8(pb);
201 codecdata_length = avio_rb32(pb);
202 if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
203 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
207 ast->audio_framesize = st->codec->block_align;
208 if (st->codec->codec_id == AV_CODEC_ID_SIPR) {
210 av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
214 st->codec->block_align = ff_sipr_subpk_size[flavor];
216 if(sub_packet_size <= 0){
217 av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
220 st->codec->block_align = ast->sub_packet_size;
222 if ((ret = rm_read_extradata(pb, st->codec, codecdata_length)) < 0)
226 case AV_CODEC_ID_AAC:
227 avio_rb16(pb); avio_r8(pb);
230 codecdata_length = avio_rb32(pb);
231 if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
232 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
235 if (codecdata_length >= 1) {
237 if ((ret = rm_read_extradata(pb, st->codec, codecdata_length - 1)) < 0)
242 av_strlcpy(st->codec->codec_name, buf, sizeof(st->codec->codec_name));
244 if (ast->deint_id == DEINT_ID_INT4 ||
245 ast->deint_id == DEINT_ID_GENR ||
246 ast->deint_id == DEINT_ID_SIPR) {
247 if (st->codec->block_align <= 0 ||
248 ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
249 ast->audio_framesize * sub_packet_h < st->codec->block_align)
250 return AVERROR_INVALIDDATA;
251 if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
252 return AVERROR(ENOMEM);
254 switch (ast->deint_id) {
256 if (ast->coded_framesize > ast->audio_framesize ||
258 ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
259 return AVERROR_INVALIDDATA;
262 if (ast->sub_packet_size <= 0 ||
263 ast->sub_packet_size > ast->audio_framesize)
264 return AVERROR_INVALIDDATA;
272 av_log(NULL,0,"Unknown interleaver %X\n", ast->deint_id);
273 return AVERROR_INVALIDDATA;
280 rm_read_metadata(s, 0);
287 ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVIOContext *pb,
288 AVStream *st, RMStream *rst, int codec_data_size, const uint8_t *mime)
295 avpriv_set_pts_info(st, 64, 1, 1000);
296 codec_pos = avio_tell(pb);
298 if (v == MKTAG(0xfd, 'a', 'r', '.')) {
300 if (rm_read_audio_stream_info(s, pb, st, rst, 0))
302 } else if (v == MKBETAG('L', 'S', 'D', ':')) {
303 avio_seek(pb, -4, SEEK_CUR);
304 if ((ret = rm_read_extradata(pb, st->codec, codec_data_size)) < 0)
307 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
308 st->codec->codec_tag = AV_RL32(st->codec->extradata);
309 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
310 st->codec->codec_tag);
311 } else if(mime && !strcmp(mime, "logical-fileinfo")){
312 int stream_count, rule_count, property_count, i;
313 ff_free_stream(s, st);
314 if (avio_rb16(pb) != 0) {
315 av_log(s, AV_LOG_WARNING, "Unsupported version\n");
318 stream_count = avio_rb16(pb);
319 avio_skip(pb, 6*stream_count);
320 rule_count = avio_rb16(pb);
321 avio_skip(pb, 2*rule_count);
322 property_count = avio_rb16(pb);
323 for(i=0; i<property_count; i++){
324 uint8_t name[128], val[128];
326 if (avio_rb16(pb) != 0) {
327 av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
328 goto skip; //FIXME skip just this one
330 get_str8(pb, name, sizeof(name));
331 switch(avio_rb32(pb)) {
332 case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
333 av_dict_set(&s->metadata, name, val, 0);
335 default: avio_skip(pb, avio_rb16(pb));
340 if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
342 av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
345 st->codec->codec_tag = avio_rl32(pb);
346 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
347 st->codec->codec_tag);
348 av_dlog(s, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
349 if (st->codec->codec_id == AV_CODEC_ID_NONE)
351 st->codec->width = avio_rb16(pb);
352 st->codec->height = avio_rb16(pb);
353 avio_skip(pb, 2); // looks like bits per sample
354 avio_skip(pb, 4); // always zero?
355 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
356 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
359 if ((ret = rm_read_extradata(pb, st->codec, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
362 av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
363 0x10000, fps, (1 << 30) - 1);
364 #if FF_API_R_FRAME_RATE
365 st->r_frame_rate = st->avg_frame_rate;
370 /* skip codec info */
371 size = avio_tell(pb) - codec_pos;
372 avio_skip(pb, codec_data_size - size);
377 /** this function assumes that the demuxer has already seeked to the start
378 * of the INDX chunk, and will bail out if not. */
379 static int rm_read_index(AVFormatContext *s)
381 AVIOContext *pb = s->pb;
382 unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
386 if (avio_rl32(pb) != MKTAG('I','N','D','X'))
388 size = avio_rb32(pb);
392 n_pkts = avio_rb32(pb);
393 str_id = avio_rb16(pb);
394 next_off = avio_rb32(pb);
395 for (n = 0; n < s->nb_streams; n++)
396 if (s->streams[n]->id == str_id) {
400 if (n == s->nb_streams) {
401 av_log(s, AV_LOG_ERROR,
402 "Invalid stream index %d for index at pos %"PRId64"\n",
403 str_id, avio_tell(pb));
405 } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
406 av_log(s, AV_LOG_ERROR,
407 "Nr. of packets in packet index for stream index %d "
408 "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
409 str_id, avio_size(pb), avio_tell(pb),
410 (avio_size(pb) - avio_tell(pb)) / 14);
414 for (n = 0; n < n_pkts; n++) {
418 avio_skip(pb, 4); /* packet no. */
420 av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
424 if (next_off && avio_tell(pb) < next_off &&
425 avio_seek(pb, next_off, SEEK_SET) < 0) {
426 av_log(s, AV_LOG_ERROR,
427 "Non-linear index detected, not supported\n");
435 static int rm_read_header_old(AVFormatContext *s)
437 RMDemuxContext *rm = s->priv_data;
441 st = avformat_new_stream(s, NULL);
444 st->priv_data = ff_rm_alloc_rmstream();
445 return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
448 static int rm_read_header(AVFormatContext *s)
450 RMDemuxContext *rm = s->priv_data;
452 AVIOContext *pb = s->pb;
455 unsigned int start_time, duration;
456 unsigned int data_off = 0, indx_off = 0;
457 char buf[128], mime[128];
461 if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
462 /* very old .ra format */
463 return rm_read_header_old(s);
464 } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
468 tag_size = avio_rb32(pb);
469 avio_skip(pb, tag_size - 8);
475 tag_size = avio_rb32(pb);
477 av_dlog(s, "tag=%c%c%c%c (%08x) size=%d\n",
484 if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
487 case MKTAG('P', 'R', 'O', 'P'):
489 avio_rb32(pb); /* max bit rate */
490 avio_rb32(pb); /* avg bit rate */
491 avio_rb32(pb); /* max packet size */
492 avio_rb32(pb); /* avg packet size */
493 avio_rb32(pb); /* nb packets */
494 duration = avio_rb32(pb); /* duration */
495 s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
496 avio_rb32(pb); /* preroll */
497 indx_off = avio_rb32(pb); /* index offset */
498 data_off = avio_rb32(pb); /* data offset */
499 avio_rb16(pb); /* nb streams */
500 flags = avio_rb16(pb); /* flags */
502 case MKTAG('C', 'O', 'N', 'T'):
503 rm_read_metadata(s, 1);
505 case MKTAG('M', 'D', 'P', 'R'):
506 st = avformat_new_stream(s, NULL);
508 return AVERROR(ENOMEM);
509 st->id = avio_rb16(pb);
510 avio_rb32(pb); /* max bit rate */
511 st->codec->bit_rate = avio_rb32(pb); /* bit rate */
512 avio_rb32(pb); /* max packet size */
513 avio_rb32(pb); /* avg packet size */
514 start_time = avio_rb32(pb); /* start time */
515 avio_rb32(pb); /* preroll */
516 duration = avio_rb32(pb); /* duration */
517 st->start_time = start_time;
518 st->duration = duration;
520 s->duration = AV_NOPTS_VALUE;
521 get_str8(pb, buf, sizeof(buf)); /* desc */
522 get_str8(pb, mime, sizeof(mime)); /* mimetype */
523 st->codec->codec_type = AVMEDIA_TYPE_DATA;
524 st->priv_data = ff_rm_alloc_rmstream();
525 if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
526 avio_rb32(pb), mime) < 0)
529 case MKTAG('D', 'A', 'T', 'A'):
532 /* unknown tag: skip it */
533 avio_skip(pb, tag_size - 10);
538 rm->nb_packets = avio_rb32(pb); /* number of packets */
539 if (!rm->nb_packets && (flags & 4))
540 rm->nb_packets = 3600 * 25;
541 avio_rb32(pb); /* next data header */
544 data_off = avio_tell(pb) - 18;
545 if (indx_off && pb->seekable && !(s->flags & AVFMT_FLAG_IGNIDX) &&
546 avio_seek(pb, indx_off, SEEK_SET) >= 0) {
548 avio_seek(pb, data_off + 18, SEEK_SET);
554 static int get_num(AVIOContext *pb, int *len)
566 return (n << 16) | n1;
570 /* multiple of 20 bytes for ra144 (ugly) */
571 #define RAW_PACKET_SIZE 1000
573 static int sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
574 RMDemuxContext *rm = s->priv_data;
575 AVIOContext *pb = s->pb;
577 uint32_t state=0xFFFFFFFF;
579 while(!url_feof(pb)){
581 *pos= avio_tell(pb) - 3;
582 if(rm->remaining_len > 0){
583 num= rm->current_stream;
584 len= rm->remaining_len;
585 *timestamp = AV_NOPTS_VALUE;
588 state= (state<<8) + avio_r8(pb);
590 if(state == MKBETAG('I', 'N', 'D', 'X')){
591 int n_pkts, expected_len;
594 n_pkts = avio_rb32(pb);
595 expected_len = 20 + n_pkts * 14;
597 /* some files don't add index entries to chunk size... */
599 else if (len != expected_len)
600 av_log(s, AV_LOG_WARNING,
601 "Index size %d (%d pkts) is wrong, should be %d.\n",
602 len, n_pkts, expected_len);
603 len -= 14; // we already read part of the index header
607 } else if (state == MKBETAG('D','A','T','A')) {
608 av_log(s, AV_LOG_WARNING,
609 "DATA tag in middle of chunk, file may be broken.\n");
612 if(state > (unsigned)0xFFFF || state <= 12)
618 *timestamp = avio_rb32(pb);
619 avio_r8(pb); /* reserved */
620 *flags = avio_r8(pb); /* flags */
622 for(i=0;i<s->nb_streams;i++) {
627 if (i == s->nb_streams) {
629 /* skip packet if unknown number */
631 rm->remaining_len = 0;
641 static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb,
642 RMDemuxContext *rm, RMStream *vst,
643 AVPacket *pkt, int len, int *pseq,
646 int hdr, seq, pic_num, len2, pos;
649 hdr = avio_r8(pb); len--;
652 if(type != 3){ // not frame as a part of packet
653 seq = avio_r8(pb); len--;
655 if(type != 1){ // not whole frame
656 len2 = get_num(pb, &len);
657 pos = get_num(pb, &len);
658 pic_num = avio_r8(pb); len--;
662 rm->remaining_len = len;
663 if(type&1){ // frame, not slice
664 if(type == 3){ // frame as a part of packet
668 if(rm->remaining_len < len)
670 rm->remaining_len -= len;
671 if(av_new_packet(pkt, len + 9) < 0)
674 AV_WL32(pkt->data + 1, 1);
675 AV_WL32(pkt->data + 5, 0);
676 avio_read(pb, pkt->data + 9, len);
679 //now we have to deal with single slice
682 if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
683 vst->slices = ((hdr & 0x3F) << 1) + 1;
684 vst->videobufsize = len2 + 8*vst->slices + 1;
685 av_free_packet(&vst->pkt); //FIXME this should be output.
686 if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
687 return AVERROR(ENOMEM);
688 vst->videobufpos = 8*vst->slices + 1;
690 vst->curpic_num = pic_num;
691 vst->pktpos = avio_tell(pb);
694 len = FFMIN(len, pos);
696 if(++vst->cur_slice > vst->slices)
698 AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
699 AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
700 if(vst->videobufpos + len > vst->videobufsize)
702 if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
704 vst->videobufpos += len;
705 rm->remaining_len-= len;
707 if (type == 2 || vst->videobufpos == vst->videobufsize) {
708 vst->pkt.data[0] = vst->cur_slice-1;
712 if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
713 memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
714 vst->videobufpos - 1 - 8*vst->slices);
715 pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
716 pkt->pts = AV_NOPTS_VALUE;
717 pkt->pos = vst->pktpos;
726 rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
731 if (st->codec->codec_id == AV_CODEC_ID_AC3) {
733 for (j=0;j<pkt->size;j+=2) {
734 FFSWAP(int, ptr[0], ptr[1]);
741 ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb,
742 AVStream *st, RMStream *ast, int len, AVPacket *pkt,
743 int *seq, int flags, int64_t timestamp)
745 RMDemuxContext *rm = s->priv_data;
747 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
748 rm->current_stream= st->id;
749 if(rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, ×tamp))
750 return -1; //got partial frame
751 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
752 if ((ast->deint_id == DEINT_ID_GENR) ||
753 (ast->deint_id == DEINT_ID_INT4) ||
754 (ast->deint_id == DEINT_ID_SIPR)) {
756 int sps = ast->sub_packet_size;
757 int cfs = ast->coded_framesize;
758 int h = ast->sub_packet_h;
759 int y = ast->sub_packet_cnt;
760 int w = ast->audio_framesize;
763 y = ast->sub_packet_cnt = 0;
765 ast->audiotimestamp = timestamp;
767 switch (ast->deint_id) {
769 for (x = 0; x < h/2; x++)
770 avio_read(pb, ast->pkt.data+x*2*w+y*cfs, cfs);
773 for (x = 0; x < w/sps; x++)
774 avio_read(pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
777 avio_read(pb, ast->pkt.data + y * w, w);
781 if (++(ast->sub_packet_cnt) < h)
783 if (ast->deint_id == DEINT_ID_SIPR)
784 ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
786 ast->sub_packet_cnt = 0;
787 rm->audio_stream_num = st->index;
788 rm->audio_pkt_cnt = h * w / st->codec->block_align;
789 } else if ((ast->deint_id == DEINT_ID_VBRF) ||
790 (ast->deint_id == DEINT_ID_VBRS)) {
792 rm->audio_stream_num = st->index;
793 ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
794 if (ast->sub_packet_cnt) {
795 for (x = 0; x < ast->sub_packet_cnt; x++)
796 ast->sub_packet_lengths[x] = avio_rb16(pb);
797 rm->audio_pkt_cnt = ast->sub_packet_cnt;
798 ast->audiotimestamp = timestamp;
802 av_get_packet(pb, pkt, len);
803 rm_ac3_swap_bytes(st, pkt);
806 av_get_packet(pb, pkt, len);
808 pkt->stream_index = st->index;
811 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
812 if(st->codec->codec_id == AV_CODEC_ID_RV20){
813 int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1);
814 av_log(s, AV_LOG_DEBUG, "%d %"PRId64" %d\n", *timestamp, *timestamp*512LL/25, seq);
816 seq |= (timestamp&~0x3FFF);
817 if(seq - timestamp > 0x2000) seq -= 0x4000;
818 if(seq - timestamp < -0x2000) seq += 0x4000;
823 pkt->pts = timestamp;
825 pkt->flags |= AV_PKT_FLAG_KEY;
827 return st->codec->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
831 ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb,
832 AVStream *st, RMStream *ast, AVPacket *pkt)
834 RMDemuxContext *rm = s->priv_data;
836 av_assert0 (rm->audio_pkt_cnt > 0);
838 if (ast->deint_id == DEINT_ID_VBRF ||
839 ast->deint_id == DEINT_ID_VBRS)
840 av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
842 if(av_new_packet(pkt, st->codec->block_align) < 0)
843 return AVERROR(ENOMEM);
844 memcpy(pkt->data, ast->pkt.data + st->codec->block_align * //FIXME avoid this
845 (ast->sub_packet_h * ast->audio_framesize / st->codec->block_align - rm->audio_pkt_cnt),
846 st->codec->block_align);
849 if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
850 ast->audiotimestamp = AV_NOPTS_VALUE;
851 pkt->flags = AV_PKT_FLAG_KEY;
854 pkt->stream_index = st->index;
856 return rm->audio_pkt_cnt;
859 static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
861 RMDemuxContext *rm = s->priv_data;
863 int i, len, res, seq = 1;
864 int64_t timestamp, pos;
868 if (rm->audio_pkt_cnt) {
869 // If there are queued audio packet return them first
870 st = s->streams[rm->audio_stream_num];
871 res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
876 if (rm->old_format) {
881 timestamp = AV_NOPTS_VALUE;
882 len = !ast->audio_framesize ? RAW_PACKET_SIZE :
883 ast->coded_framesize * ast->sub_packet_h / 2;
884 flags = (seq++ == 1) ? 2 : 0;
885 pos = avio_tell(s->pb);
887 len=sync(s, ×tamp, &flags, &i, &pos);
892 if(len<0 || url_feof(s->pb))
895 res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
896 &seq, flags, timestamp);
897 if((flags&2) && (seq&0x7F) == 1)
898 av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
903 if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
904 || st->discard >= AVDISCARD_ALL){
913 static int rm_read_close(AVFormatContext *s)
917 for (i=0;i<s->nb_streams;i++)
918 ff_rm_free_rmstream(s->streams[i]->priv_data);
923 static int rm_probe(AVProbeData *p)
925 /* check file header */
926 if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
927 p->buf[2] == 'M' && p->buf[3] == 'F' &&
928 p->buf[4] == 0 && p->buf[5] == 0) ||
929 (p->buf[0] == '.' && p->buf[1] == 'r' &&
930 p->buf[2] == 'a' && p->buf[3] == 0xfd))
931 return AVPROBE_SCORE_MAX;
936 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
937 int64_t *ppos, int64_t pos_limit)
939 RMDemuxContext *rm = s->priv_data;
941 int stream_index2, flags, len, h;
946 return AV_NOPTS_VALUE;
948 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
949 return AV_NOPTS_VALUE;
956 len=sync(s, &dts, &flags, &stream_index2, &pos);
958 return AV_NOPTS_VALUE;
960 st = s->streams[stream_index2];
961 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
962 h= avio_r8(s->pb); len--;
964 seq = avio_r8(s->pb); len--;
968 if((flags&2) && (seq&0x7F) == 1){
969 av_dlog(s, "%d %d-%d %"PRId64" %d\n",
970 flags, stream_index2, stream_index, dts, seq);
971 av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
972 if(stream_index2 == stream_index)
976 avio_skip(s->pb, len);
982 AVInputFormat ff_rm_demuxer = {
984 .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
985 .priv_data_size = sizeof(RMDemuxContext),
986 .read_probe = rm_probe,
987 .read_header = rm_read_header,
988 .read_packet = rm_read_packet,
989 .read_close = rm_read_close,
990 .read_timestamp = rm_read_dts,
993 AVInputFormat ff_rdt_demuxer = {
995 .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
996 .priv_data_size = sizeof(RMDemuxContext),
997 .read_close = rm_read_close,
998 .flags = AVFMT_NOFILE,