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
24 #include "libavutil/avassert.h"
25 #include "libavutil/avstring.h"
26 #include "libavutil/channel_layout.h"
27 #include "libavutil/internal.h"
28 #include "libavutil/intreadwrite.h"
29 #include "libavutil/dict.h"
31 #include "avio_internal.h"
36 #define DEINT_ID_GENR MKTAG('g', 'e', 'n', 'r') ///< interleaving for Cooker/ATRAC
37 #define DEINT_ID_INT0 MKTAG('I', 'n', 't', '0') ///< no interleaving needed
38 #define DEINT_ID_INT4 MKTAG('I', 'n', 't', '4') ///< interleaving for 28.8
39 #define DEINT_ID_SIPR MKTAG('s', 'i', 'p', 'r') ///< interleaving for Sipro
40 #define DEINT_ID_VBRF MKTAG('v', 'b', 'r', 'f') ///< VBR case for AAC
41 #define DEINT_ID_VBRS MKTAG('v', 'b', 'r', 's') ///< VBR case for AAC
44 AVPacket pkt; ///< place to store merged video frame / reordered audio data
45 int videobufsize; ///< current assembled frame size
46 int videobufpos; ///< position for the next slice in the video buffer
47 int curpic_num; ///< picture number of current frame
48 int cur_slice, slices;
49 int64_t pktpos; ///< first slice position in file
50 /// Audio descrambling matrix parameters
51 int64_t audiotimestamp; ///< Audio packet timestamp
52 int sub_packet_cnt; // Subpacket counter, used while reading
53 int sub_packet_size, sub_packet_h, coded_framesize; ///< Descrambling parameters from container
54 int audio_framesize; /// Audio frame size from container
55 int sub_packet_lengths[16]; /// Length of each subpacket
56 int32_t deint_id; ///< deinterleaver used in audio stream
59 typedef struct RMDemuxContext {
64 int audio_stream_num; ///< Stream number for audio packets
65 int audio_pkt_cnt; ///< Output packet counter
68 static int rm_read_close(AVFormatContext *s);
70 static inline void get_strl(AVIOContext *pb, char *buf, int buf_size, int len)
81 if (buf_size > 0) *q = '\0';
84 static void get_str8(AVIOContext *pb, char *buf, int buf_size)
86 get_strl(pb, buf, buf_size, avio_r8(pb));
89 static int rm_read_extradata(AVIOContext *pb, AVCodecContext *avctx, unsigned size)
92 av_log(avctx, AV_LOG_ERROR, "extradata size %u too large\n", size);
95 if (ff_get_extradata(avctx, pb, size) < 0)
96 return AVERROR(ENOMEM);
100 static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
105 for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
106 int len = wide ? avio_rb16(pb) : avio_r8(pb);
107 get_strl(pb, buf, sizeof(buf), len);
108 av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
112 RMStream *ff_rm_alloc_rmstream (void)
114 RMStream *rms = av_mallocz(sizeof(RMStream));
117 rms->curpic_num = -1;
121 void ff_rm_free_rmstream (RMStream *rms)
123 av_packet_unref(&rms->pkt);
126 static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
127 AVStream *st, RMStream *ast, int read_all)
134 version = avio_rb16(pb); /* version */
136 unsigned bytes_per_minute;
137 int header_size = avio_rb16(pb);
138 int64_t startpos = avio_tell(pb);
140 bytes_per_minute = avio_rb16(pb);
142 rm_read_metadata(s, pb, 0);
143 if ((startpos + header_size) >= avio_tell(pb) + 2) {
144 // fourcc (should always be "lpcJ")
146 get_str8(pb, buf, sizeof(buf));
148 // Skip extra header crap (this should never happen)
149 if ((startpos + header_size) > avio_tell(pb))
150 avio_skip(pb, header_size + startpos - avio_tell(pb));
151 if (bytes_per_minute)
152 st->codec->bit_rate = 8LL * bytes_per_minute / 60;
153 st->codec->sample_rate = 8000;
154 st->codec->channels = 1;
155 st->codec->channel_layout = AV_CH_LAYOUT_MONO;
156 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
157 st->codec->codec_id = AV_CODEC_ID_RA_144;
158 ast->deint_id = DEINT_ID_INT0;
160 int flavor, sub_packet_h, coded_framesize, sub_packet_size;
161 int codecdata_length;
162 unsigned bytes_per_minute;
163 /* old version (4) */
164 avio_skip(pb, 2); /* unused */
165 avio_rb32(pb); /* .ra4 */
166 avio_rb32(pb); /* data size */
167 avio_rb16(pb); /* version2 */
168 avio_rb32(pb); /* header size */
169 flavor= avio_rb16(pb); /* add codec info / flavor */
170 ast->coded_framesize = coded_framesize = avio_rb32(pb); /* coded frame size */
171 avio_rb32(pb); /* ??? */
172 bytes_per_minute = avio_rb32(pb);
174 if (bytes_per_minute)
175 st->codec->bit_rate = 8LL * bytes_per_minute / 60;
177 avio_rb32(pb); /* ??? */
178 ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
179 st->codec->block_align= avio_rb16(pb); /* frame size */
180 ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
181 avio_rb16(pb); /* ??? */
183 avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
185 st->codec->sample_rate = avio_rb16(pb);
187 st->codec->channels = avio_rb16(pb);
189 ast->deint_id = avio_rl32(pb);
190 avio_read(pb, buf, 4);
194 get_str8(pb, buf, sizeof(buf)); /* desc */
195 ast->deint_id = AV_RL32(buf);
196 get_str8(pb, buf, sizeof(buf)); /* desc */
198 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
199 st->codec->codec_tag = AV_RL32(buf);
200 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
201 st->codec->codec_tag);
203 switch (st->codec->codec_id) {
204 case AV_CODEC_ID_AC3:
205 st->need_parsing = AVSTREAM_PARSE_FULL;
207 case AV_CODEC_ID_RA_288:
208 st->codec->extradata_size= 0;
209 ast->audio_framesize = st->codec->block_align;
210 st->codec->block_align = coded_framesize;
212 case AV_CODEC_ID_COOK:
213 st->need_parsing = AVSTREAM_PARSE_HEADERS;
214 case AV_CODEC_ID_ATRAC3:
215 case AV_CODEC_ID_SIPR:
217 codecdata_length = 0;
219 avio_rb16(pb); avio_r8(pb);
222 codecdata_length = avio_rb32(pb);
223 if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
224 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
229 ast->audio_framesize = st->codec->block_align;
230 if (st->codec->codec_id == AV_CODEC_ID_SIPR) {
232 av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
236 st->codec->block_align = ff_sipr_subpk_size[flavor];
238 if(sub_packet_size <= 0){
239 av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
242 st->codec->block_align = ast->sub_packet_size;
244 if ((ret = rm_read_extradata(pb, st->codec, codecdata_length)) < 0)
248 case AV_CODEC_ID_AAC:
249 avio_rb16(pb); avio_r8(pb);
252 codecdata_length = avio_rb32(pb);
253 if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
254 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
257 if (codecdata_length >= 1) {
259 if ((ret = rm_read_extradata(pb, st->codec, codecdata_length - 1)) < 0)
264 switch (ast->deint_id) {
266 if (ast->coded_framesize > ast->audio_framesize ||
268 ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
269 return AVERROR_INVALIDDATA;
270 if (ast->coded_framesize * sub_packet_h != 2*ast->audio_framesize) {
271 avpriv_request_sample(s, "mismatching interleaver parameters");
272 return AVERROR_INVALIDDATA;
276 if (ast->sub_packet_size <= 0 ||
277 ast->sub_packet_size > ast->audio_framesize)
278 return AVERROR_INVALIDDATA;
279 if (ast->audio_framesize % ast->sub_packet_size)
280 return AVERROR_INVALIDDATA;
288 av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
289 return AVERROR_INVALIDDATA;
291 if (ast->deint_id == DEINT_ID_INT4 ||
292 ast->deint_id == DEINT_ID_GENR ||
293 ast->deint_id == DEINT_ID_SIPR) {
294 if (st->codec->block_align <= 0 ||
295 ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
296 ast->audio_framesize * sub_packet_h < st->codec->block_align)
297 return AVERROR_INVALIDDATA;
298 if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
299 return AVERROR(ENOMEM);
306 rm_read_metadata(s, pb, 0);
312 int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb,
313 AVStream *st, RMStream *rst,
314 unsigned int codec_data_size, const uint8_t *mime)
321 if (codec_data_size > INT_MAX)
322 return AVERROR_INVALIDDATA;
323 if (codec_data_size == 0)
326 avpriv_set_pts_info(st, 64, 1, 1000);
327 codec_pos = avio_tell(pb);
330 if (v == MKTAG(0xfd, 'a', 'r', '.')) {
332 if (rm_read_audio_stream_info(s, pb, st, rst, 0))
334 } else if (v == MKBETAG('L', 'S', 'D', ':')) {
335 avio_seek(pb, -4, SEEK_CUR);
336 if ((ret = rm_read_extradata(pb, st->codec, codec_data_size)) < 0)
339 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
340 st->codec->codec_tag = AV_RL32(st->codec->extradata);
341 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
342 st->codec->codec_tag);
343 } else if(mime && !strcmp(mime, "logical-fileinfo")){
344 int stream_count, rule_count, property_count, i;
345 ff_free_stream(s, st);
346 if (avio_rb16(pb) != 0) {
347 av_log(s, AV_LOG_WARNING, "Unsupported version\n");
350 stream_count = avio_rb16(pb);
351 avio_skip(pb, 6*stream_count);
352 rule_count = avio_rb16(pb);
353 avio_skip(pb, 2*rule_count);
354 property_count = avio_rb16(pb);
355 for(i=0; i<property_count; i++){
356 uint8_t name[128], val[128];
358 if (avio_rb16(pb) != 0) {
359 av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
360 goto skip; //FIXME skip just this one
362 get_str8(pb, name, sizeof(name));
363 switch(avio_rb32(pb)) {
364 case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
365 av_dict_set(&s->metadata, name, val, 0);
367 default: avio_skip(pb, avio_rb16(pb));
372 if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
374 av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
377 st->codec->codec_tag = avio_rl32(pb);
378 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
379 st->codec->codec_tag);
380 av_log(s, AV_LOG_TRACE, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
381 if (st->codec->codec_id == AV_CODEC_ID_NONE)
383 st->codec->width = avio_rb16(pb);
384 st->codec->height = avio_rb16(pb);
385 avio_skip(pb, 2); // looks like bits per sample
386 avio_skip(pb, 4); // always zero?
387 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
388 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
391 if ((ret = rm_read_extradata(pb, st->codec, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
395 av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
396 0x10000, fps, (1 << 30) - 1);
397 #if FF_API_R_FRAME_RATE
398 st->r_frame_rate = st->avg_frame_rate;
400 } else if (s->error_recognition & AV_EF_EXPLODE) {
401 av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
402 return AVERROR_INVALIDDATA;
407 /* skip codec info */
408 size = avio_tell(pb) - codec_pos;
409 if (codec_data_size >= size) {
410 avio_skip(pb, codec_data_size - size);
412 av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
418 /** this function assumes that the demuxer has already seeked to the start
419 * of the INDX chunk, and will bail out if not. */
420 static int rm_read_index(AVFormatContext *s)
422 AVIOContext *pb = s->pb;
423 unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
427 if (avio_rl32(pb) != MKTAG('I','N','D','X'))
429 size = avio_rb32(pb);
433 n_pkts = avio_rb32(pb);
434 str_id = avio_rb16(pb);
435 next_off = avio_rb32(pb);
436 for (n = 0; n < s->nb_streams; n++)
437 if (s->streams[n]->id == str_id) {
441 if (n == s->nb_streams) {
442 av_log(s, AV_LOG_ERROR,
443 "Invalid stream index %d for index at pos %"PRId64"\n",
444 str_id, avio_tell(pb));
446 } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
447 av_log(s, AV_LOG_ERROR,
448 "Nr. of packets in packet index for stream index %d "
449 "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
450 str_id, avio_size(pb), avio_tell(pb),
451 (avio_size(pb) - avio_tell(pb)) / 14);
455 for (n = 0; n < n_pkts; n++) {
459 avio_skip(pb, 4); /* packet no. */
461 av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
465 if (next_off && avio_tell(pb) < next_off &&
466 avio_seek(pb, next_off, SEEK_SET) < 0) {
467 av_log(s, AV_LOG_ERROR,
468 "Non-linear index detected, not supported\n");
476 static int rm_read_header_old(AVFormatContext *s)
478 RMDemuxContext *rm = s->priv_data;
482 st = avformat_new_stream(s, NULL);
485 st->priv_data = ff_rm_alloc_rmstream();
487 return AVERROR(ENOMEM);
488 return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
491 static int rm_read_header(AVFormatContext *s)
493 RMDemuxContext *rm = s->priv_data;
495 AVIOContext *pb = s->pb;
498 unsigned int start_time, duration;
499 unsigned int data_off = 0, indx_off = 0;
500 char buf[128], mime[128];
507 if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
508 /* very old .ra format */
509 return rm_read_header_old(s);
510 } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
514 tag_size = avio_rb32(pb);
515 avio_skip(pb, tag_size - 8);
521 tag_size = avio_rb32(pb);
523 av_log(s, AV_LOG_TRACE, "tag=%c%c%c%c (%08x) size=%d\n",
530 if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
533 case MKTAG('P', 'R', 'O', 'P'):
535 avio_rb32(pb); /* max bit rate */
536 avio_rb32(pb); /* avg bit rate */
537 avio_rb32(pb); /* max packet size */
538 avio_rb32(pb); /* avg packet size */
539 avio_rb32(pb); /* nb packets */
540 duration = avio_rb32(pb); /* duration */
541 s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
542 avio_rb32(pb); /* preroll */
543 indx_off = avio_rb32(pb); /* index offset */
544 data_off = avio_rb32(pb); /* data offset */
545 avio_rb16(pb); /* nb streams */
546 flags = avio_rb16(pb); /* flags */
548 case MKTAG('C', 'O', 'N', 'T'):
549 rm_read_metadata(s, pb, 1);
551 case MKTAG('M', 'D', 'P', 'R'):
552 st = avformat_new_stream(s, NULL);
554 ret = AVERROR(ENOMEM);
557 st->id = avio_rb16(pb);
558 avio_rb32(pb); /* max bit rate */
559 st->codec->bit_rate = avio_rb32(pb); /* bit rate */
560 avio_rb32(pb); /* max packet size */
561 avio_rb32(pb); /* avg packet size */
562 start_time = avio_rb32(pb); /* start time */
563 avio_rb32(pb); /* preroll */
564 duration = avio_rb32(pb); /* duration */
565 st->start_time = start_time;
566 st->duration = duration;
568 s->duration = AV_NOPTS_VALUE;
569 get_str8(pb, buf, sizeof(buf)); /* desc */
570 get_str8(pb, mime, sizeof(mime)); /* mimetype */
571 st->codec->codec_type = AVMEDIA_TYPE_DATA;
572 st->priv_data = ff_rm_alloc_rmstream();
574 return AVERROR(ENOMEM);
576 size = avio_rb32(pb);
577 codec_pos = avio_tell(pb);
579 ffio_ensure_seekback(pb, 4);
581 if (v == MKBETAG('M', 'L', 'T', 'I')) {
582 int number_of_streams = avio_rb16(pb);
586 for (i = 0; i<number_of_streams; i++)
588 number_of_mdpr = avio_rb16(pb);
589 if (number_of_mdpr != 1) {
590 avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
592 for (i = 0; i < number_of_mdpr; i++) {
595 st2 = avformat_new_stream(s, NULL);
597 ret = AVERROR(ENOMEM);
600 st2->id = st->id + (i<<16);
601 st2->codec->bit_rate = st->codec->bit_rate;
602 st2->start_time = st->start_time;
603 st2->duration = st->duration;
604 st2->codec->codec_type = AVMEDIA_TYPE_DATA;
605 st2->priv_data = ff_rm_alloc_rmstream();
607 return AVERROR(ENOMEM);
611 size2 = avio_rb32(pb);
612 if (ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
616 avio_seek(pb, codec_pos + size, SEEK_SET);
619 if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
625 case MKTAG('D', 'A', 'T', 'A'):
628 /* unknown tag: skip it */
629 avio_skip(pb, tag_size - 10);
634 rm->nb_packets = avio_rb32(pb); /* number of packets */
635 if (!rm->nb_packets && (flags & 4))
636 rm->nb_packets = 3600 * 25;
637 avio_rb32(pb); /* next data header */
640 data_off = avio_tell(pb) - 18;
641 if (indx_off && pb->seekable && !(s->flags & AVFMT_FLAG_IGNIDX) &&
642 avio_seek(pb, indx_off, SEEK_SET) >= 0) {
644 avio_seek(pb, data_off + 18, SEEK_SET);
654 static int get_num(AVIOContext *pb, int *len)
666 return (n << 16) | n1;
670 /* multiple of 20 bytes for ra144 (ugly) */
671 #define RAW_PACKET_SIZE 1000
673 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
674 RMDemuxContext *rm = s->priv_data;
675 AVIOContext *pb = s->pb;
677 uint32_t state=0xFFFFFFFF;
679 while(!avio_feof(pb)){
682 *pos= avio_tell(pb) - 3;
683 if(rm->remaining_len > 0){
684 num= rm->current_stream;
686 len= rm->remaining_len;
687 *timestamp = AV_NOPTS_VALUE;
690 state= (state<<8) + avio_r8(pb);
692 if(state == MKBETAG('I', 'N', 'D', 'X')){
693 int n_pkts, expected_len;
696 n_pkts = avio_rb32(pb);
697 expected_len = 20 + n_pkts * 14;
699 /* some files don't add index entries to chunk size... */
701 else if (len != expected_len)
702 av_log(s, AV_LOG_WARNING,
703 "Index size %d (%d pkts) is wrong, should be %d.\n",
704 len, n_pkts, expected_len);
705 len -= 14; // we already read part of the index header
709 } else if (state == MKBETAG('D','A','T','A')) {
710 av_log(s, AV_LOG_WARNING,
711 "DATA tag in middle of chunk, file may be broken.\n");
714 if(state > (unsigned)0xFFFF || state <= 12)
720 *timestamp = avio_rb32(pb);
721 mlti_id = (avio_r8(pb)>>1)-1<<16;
722 mlti_id = FFMAX(mlti_id, 0);
723 *flags = avio_r8(pb); /* flags */
725 for(i=0;i<s->nb_streams;i++) {
727 if (mlti_id + num == st->id)
730 if (i == s->nb_streams) {
732 /* skip packet if unknown number */
734 rm->remaining_len = 0;
744 static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb,
745 RMDemuxContext *rm, RMStream *vst,
746 AVPacket *pkt, int len, int *pseq,
750 int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
754 hdr = avio_r8(pb); len--;
757 if(type != 3){ // not frame as a part of packet
758 seq = avio_r8(pb); len--;
760 if(type != 1){ // not whole frame
761 len2 = get_num(pb, &len);
762 pos = get_num(pb, &len);
763 pic_num = avio_r8(pb); len--;
766 av_log(s, AV_LOG_ERROR, "Insufficient data\n");
769 rm->remaining_len = len;
770 if(type&1){ // frame, not slice
771 if(type == 3){ // frame as a part of packet
775 if(rm->remaining_len < len) {
776 av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
779 rm->remaining_len -= len;
780 if(av_new_packet(pkt, len + 9) < 0)
783 AV_WL32(pkt->data + 1, 1);
784 AV_WL32(pkt->data + 5, 0);
785 if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
786 av_packet_unref(pkt);
787 av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
788 return ret < 0 ? ret : AVERROR(EIO);
792 //now we have to deal with single slice
795 if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
796 if (len2 > ffio_limit(pb, len2)) {
797 av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
798 return AVERROR_INVALIDDATA;
800 vst->slices = ((hdr & 0x3F) << 1) + 1;
801 vst->videobufsize = len2 + 8*vst->slices + 1;
802 av_packet_unref(&vst->pkt); //FIXME this should be output.
803 if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
804 return AVERROR(ENOMEM);
805 memset(vst->pkt.data, 0, vst->pkt.size);
806 vst->videobufpos = 8*vst->slices + 1;
808 vst->curpic_num = pic_num;
809 vst->pktpos = avio_tell(pb);
812 len = FFMIN(len, pos);
814 if(++vst->cur_slice > vst->slices) {
815 av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
819 return AVERROR(ENOMEM);
820 AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
821 AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
822 if(vst->videobufpos + len > vst->videobufsize) {
823 av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
826 if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
828 vst->videobufpos += len;
829 rm->remaining_len-= len;
831 if (type == 2 || vst->videobufpos == vst->videobufsize) {
832 vst->pkt.data[0] = vst->cur_slice-1;
837 if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
838 memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
839 vst->videobufpos - 1 - 8*vst->slices);
840 pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
841 pkt->pts = AV_NOPTS_VALUE;
842 pkt->pos = vst->pktpos;
851 rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
856 if (st->codec->codec_id == AV_CODEC_ID_AC3) {
858 for (j=0;j<pkt->size;j+=2) {
859 FFSWAP(int, ptr[0], ptr[1]);
865 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
866 int ret = avio_read(pb, dst, n);
868 if (ret >= 0) memset(dst + ret, 0, n - ret);
869 else memset(dst , 0, n);
870 av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
876 ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb,
877 AVStream *st, RMStream *ast, int len, AVPacket *pkt,
878 int *seq, int flags, int64_t timestamp)
880 RMDemuxContext *rm = s->priv_data;
883 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
884 rm->current_stream= st->id;
885 ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, ×tamp);
887 return ret < 0 ? ret : -1; //got partial frame or error
888 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
889 if ((ast->deint_id == DEINT_ID_GENR) ||
890 (ast->deint_id == DEINT_ID_INT4) ||
891 (ast->deint_id == DEINT_ID_SIPR)) {
893 int sps = ast->sub_packet_size;
894 int cfs = ast->coded_framesize;
895 int h = ast->sub_packet_h;
896 int y = ast->sub_packet_cnt;
897 int w = ast->audio_framesize;
900 y = ast->sub_packet_cnt = 0;
902 ast->audiotimestamp = timestamp;
904 switch (ast->deint_id) {
906 for (x = 0; x < h/2; x++)
907 readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
910 for (x = 0; x < w/sps; x++)
911 readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
914 readfull(s, pb, ast->pkt.data + y * w, w);
918 if (++(ast->sub_packet_cnt) < h)
920 if (ast->deint_id == DEINT_ID_SIPR)
921 ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
923 ast->sub_packet_cnt = 0;
924 rm->audio_stream_num = st->index;
925 rm->audio_pkt_cnt = h * w / st->codec->block_align;
926 } else if ((ast->deint_id == DEINT_ID_VBRF) ||
927 (ast->deint_id == DEINT_ID_VBRS)) {
929 rm->audio_stream_num = st->index;
930 ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
931 if (ast->sub_packet_cnt) {
932 for (x = 0; x < ast->sub_packet_cnt; x++)
933 ast->sub_packet_lengths[x] = avio_rb16(pb);
934 rm->audio_pkt_cnt = ast->sub_packet_cnt;
935 ast->audiotimestamp = timestamp;
939 if ((ret = av_get_packet(pb, pkt, len)) < 0)
941 rm_ac3_swap_bytes(st, pkt);
944 if ((ret = av_get_packet(pb, pkt, len)) < 0)
948 pkt->stream_index = st->index;
951 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
952 if(st->codec->codec_id == AV_CODEC_ID_RV20){
953 int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1);
954 av_log(s, AV_LOG_DEBUG, "%d %"PRId64" %d\n", *timestamp, *timestamp*512LL/25, seq);
956 seq |= (timestamp&~0x3FFF);
957 if(seq - timestamp > 0x2000) seq -= 0x4000;
958 if(seq - timestamp < -0x2000) seq += 0x4000;
963 pkt->pts = timestamp;
965 pkt->flags |= AV_PKT_FLAG_KEY;
967 return st->codec->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
971 ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb,
972 AVStream *st, RMStream *ast, AVPacket *pkt)
974 RMDemuxContext *rm = s->priv_data;
976 av_assert0 (rm->audio_pkt_cnt > 0);
978 if (ast->deint_id == DEINT_ID_VBRF ||
979 ast->deint_id == DEINT_ID_VBRS) {
980 int ret = av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
984 int ret = av_new_packet(pkt, st->codec->block_align);
987 memcpy(pkt->data, ast->pkt.data + st->codec->block_align * //FIXME avoid this
988 (ast->sub_packet_h * ast->audio_framesize / st->codec->block_align - rm->audio_pkt_cnt),
989 st->codec->block_align);
992 if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
993 ast->audiotimestamp = AV_NOPTS_VALUE;
994 pkt->flags = AV_PKT_FLAG_KEY;
997 pkt->stream_index = st->index;
999 return rm->audio_pkt_cnt;
1002 static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
1004 RMDemuxContext *rm = s->priv_data;
1005 AVStream *st = NULL; // init to silence compiler warning
1006 int i, len, res, seq = 1;
1007 int64_t timestamp, pos;
1011 if (rm->audio_pkt_cnt) {
1012 // If there are queued audio packet return them first
1013 st = s->streams[rm->audio_stream_num];
1014 res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
1019 if (rm->old_format) {
1023 ast = st->priv_data;
1024 timestamp = AV_NOPTS_VALUE;
1025 len = !ast->audio_framesize ? RAW_PACKET_SIZE :
1026 ast->coded_framesize * ast->sub_packet_h / 2;
1027 flags = (seq++ == 1) ? 2 : 0;
1028 pos = avio_tell(s->pb);
1030 len = rm_sync(s, ×tamp, &flags, &i, &pos);
1035 if (len <= 0 || avio_feof(s->pb))
1036 return AVERROR(EIO);
1038 res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
1039 &seq, flags, timestamp);
1042 if((flags&2) && (seq&0x7F) == 1)
1043 av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1048 if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1049 || st->discard >= AVDISCARD_ALL){
1050 av_packet_unref(pkt);
1058 static int rm_read_close(AVFormatContext *s)
1062 for (i=0;i<s->nb_streams;i++)
1063 ff_rm_free_rmstream(s->streams[i]->priv_data);
1068 static int rm_probe(AVProbeData *p)
1070 /* check file header */
1071 if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1072 p->buf[2] == 'M' && p->buf[3] == 'F' &&
1073 p->buf[4] == 0 && p->buf[5] == 0) ||
1074 (p->buf[0] == '.' && p->buf[1] == 'r' &&
1075 p->buf[2] == 'a' && p->buf[3] == 0xfd))
1076 return AVPROBE_SCORE_MAX;
1081 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1082 int64_t *ppos, int64_t pos_limit)
1084 RMDemuxContext *rm = s->priv_data;
1086 int stream_index2, flags, len, h;
1091 return AV_NOPTS_VALUE;
1093 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1094 return AV_NOPTS_VALUE;
1096 rm->remaining_len=0;
1101 len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1103 return AV_NOPTS_VALUE;
1105 st = s->streams[stream_index2];
1106 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1107 h= avio_r8(s->pb); len--;
1109 seq = avio_r8(s->pb); len--;
1113 if((flags&2) && (seq&0x7F) == 1){
1114 av_log(s, AV_LOG_TRACE, "%d %d-%d %"PRId64" %d\n",
1115 flags, stream_index2, stream_index, dts, seq);
1116 av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1117 if(stream_index2 == stream_index)
1121 avio_skip(s->pb, len);
1127 static int rm_read_seek(AVFormatContext *s, int stream_index,
1128 int64_t pts, int flags)
1130 RMDemuxContext *rm = s->priv_data;
1132 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1134 rm->audio_pkt_cnt = 0;
1139 AVInputFormat ff_rm_demuxer = {
1141 .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1142 .priv_data_size = sizeof(RMDemuxContext),
1143 .read_probe = rm_probe,
1144 .read_header = rm_read_header,
1145 .read_packet = rm_read_packet,
1146 .read_close = rm_read_close,
1147 .read_timestamp = rm_read_dts,
1148 .read_seek = rm_read_seek,
1151 AVInputFormat ff_rdt_demuxer = {
1153 .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1154 .priv_data_size = sizeof(RMDemuxContext),
1155 .read_close = rm_read_close,
1156 .flags = AVFMT_NOFILE,