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
69 static int rm_read_close(AVFormatContext *s);
71 static inline void get_strl(AVIOContext *pb, char *buf, int buf_size, int len)
73 int read = avio_get_str(pb, len, buf, buf_size);
76 avio_skip(pb, len - read);
79 static void get_str8(AVIOContext *pb, char *buf, int buf_size)
81 get_strl(pb, buf, buf_size, avio_r8(pb));
84 static int rm_read_extradata(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, unsigned size)
87 av_log(s, AV_LOG_ERROR, "extradata size %u too large\n", size);
90 return ff_get_extradata(s, par, pb, size);
93 static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
98 for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
99 int len = wide ? avio_rb16(pb) : avio_r8(pb);
101 get_strl(pb, buf, sizeof(buf), len);
102 av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
107 RMStream *ff_rm_alloc_rmstream (void)
109 RMStream *rms = av_mallocz(sizeof(RMStream));
112 rms->curpic_num = -1;
116 void ff_rm_free_rmstream (RMStream *rms)
121 av_packet_unref(&rms->pkt);
124 static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
125 AVStream *st, RMStream *ast, int read_all)
132 version = avio_rb16(pb); /* version */
134 unsigned bytes_per_minute;
135 int header_size = avio_rb16(pb);
136 int64_t startpos = avio_tell(pb);
138 bytes_per_minute = avio_rb16(pb);
140 rm_read_metadata(s, pb, 0);
141 if ((startpos + header_size) >= avio_tell(pb) + 2) {
142 // fourcc (should always be "lpcJ")
144 get_str8(pb, buf, sizeof(buf));
146 // Skip extra header crap (this should never happen)
147 if ((startpos + header_size) > avio_tell(pb))
148 avio_skip(pb, header_size + startpos - avio_tell(pb));
149 if (bytes_per_minute)
150 st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
151 st->codecpar->sample_rate = 8000;
152 st->codecpar->channels = 1;
153 st->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
154 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
155 st->codecpar->codec_id = AV_CODEC_ID_RA_144;
156 ast->deint_id = DEINT_ID_INT0;
158 int flavor, sub_packet_h, coded_framesize, sub_packet_size;
159 int codecdata_length;
160 unsigned bytes_per_minute;
161 /* old version (4) */
162 avio_skip(pb, 2); /* unused */
163 avio_rb32(pb); /* .ra4 */
164 avio_rb32(pb); /* data size */
165 avio_rb16(pb); /* version2 */
166 avio_rb32(pb); /* header size */
167 flavor= avio_rb16(pb); /* add codec info / flavor */
168 coded_framesize = avio_rb32(pb); /* coded frame size */
169 if (coded_framesize < 0)
170 return AVERROR_INVALIDDATA;
171 ast->coded_framesize = coded_framesize;
173 avio_rb32(pb); /* ??? */
174 bytes_per_minute = avio_rb32(pb);
176 if (bytes_per_minute)
177 st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
179 avio_rb32(pb); /* ??? */
180 ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
181 st->codecpar->block_align= avio_rb16(pb); /* frame size */
182 ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
183 avio_rb16(pb); /* ??? */
185 avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
187 st->codecpar->sample_rate = avio_rb16(pb);
189 st->codecpar->channels = avio_rb16(pb);
191 ast->deint_id = avio_rl32(pb);
192 avio_read(pb, buf, 4);
196 get_str8(pb, buf, sizeof(buf)); /* desc */
197 ast->deint_id = AV_RL32(buf);
198 get_str8(pb, buf, sizeof(buf)); /* desc */
200 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
201 st->codecpar->codec_tag = AV_RL32(buf);
202 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
203 st->codecpar->codec_tag);
205 switch (st->codecpar->codec_id) {
206 case AV_CODEC_ID_AC3:
207 st->need_parsing = AVSTREAM_PARSE_FULL;
209 case AV_CODEC_ID_RA_288:
210 st->codecpar->extradata_size= 0;
211 av_freep(&st->codecpar->extradata);
212 ast->audio_framesize = st->codecpar->block_align;
213 st->codecpar->block_align = coded_framesize;
215 case AV_CODEC_ID_COOK:
216 st->need_parsing = AVSTREAM_PARSE_HEADERS;
217 case AV_CODEC_ID_ATRAC3:
218 case AV_CODEC_ID_SIPR:
220 codecdata_length = 0;
222 avio_rb16(pb); avio_r8(pb);
225 codecdata_length = avio_rb32(pb);
226 if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
227 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
232 ast->audio_framesize = st->codecpar->block_align;
233 if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
235 av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
239 st->codecpar->block_align = ff_sipr_subpk_size[flavor];
240 st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
242 if(sub_packet_size <= 0){
243 av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
246 st->codecpar->block_align = ast->sub_packet_size;
248 if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length)) < 0)
252 case AV_CODEC_ID_AAC:
253 avio_rb16(pb); avio_r8(pb);
256 codecdata_length = avio_rb32(pb);
257 if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
258 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
261 if (codecdata_length >= 1) {
263 if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length - 1)) < 0)
268 switch (ast->deint_id) {
270 if (ast->coded_framesize > ast->audio_framesize ||
272 ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
273 return AVERROR_INVALIDDATA;
274 if (ast->coded_framesize * sub_packet_h != 2*ast->audio_framesize) {
275 avpriv_request_sample(s, "mismatching interleaver parameters");
276 return AVERROR_INVALIDDATA;
280 if (ast->sub_packet_size <= 0 ||
281 ast->sub_packet_size > ast->audio_framesize)
282 return AVERROR_INVALIDDATA;
283 if (ast->audio_framesize % ast->sub_packet_size)
284 return AVERROR_INVALIDDATA;
292 av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
293 return AVERROR_INVALIDDATA;
295 if (ast->deint_id == DEINT_ID_INT4 ||
296 ast->deint_id == DEINT_ID_GENR ||
297 ast->deint_id == DEINT_ID_SIPR) {
298 if (st->codecpar->block_align <= 0 ||
299 ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
300 ast->audio_framesize * sub_packet_h < st->codecpar->block_align)
301 return AVERROR_INVALIDDATA;
302 if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
303 return AVERROR(ENOMEM);
310 rm_read_metadata(s, pb, 0);
316 int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb,
317 AVStream *st, RMStream *rst,
318 unsigned int codec_data_size, const uint8_t *mime)
325 if (codec_data_size > INT_MAX)
326 return AVERROR_INVALIDDATA;
327 if (codec_data_size == 0)
330 avpriv_set_pts_info(st, 64, 1, 1000);
331 codec_pos = avio_tell(pb);
334 if (v == MKTAG(0xfd, 'a', 'r', '.')) {
336 if (rm_read_audio_stream_info(s, pb, st, rst, 0))
338 } else if (v == MKBETAG('L', 'S', 'D', ':')) {
339 avio_seek(pb, -4, SEEK_CUR);
340 if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size)) < 0)
343 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
344 st->codecpar->codec_tag = AV_RL32(st->codecpar->extradata);
345 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
346 st->codecpar->codec_tag);
347 } else if(mime && !strcmp(mime, "logical-fileinfo")){
348 int stream_count, rule_count, property_count, i;
349 ff_free_stream(s, st);
350 if (avio_rb16(pb) != 0) {
351 av_log(s, AV_LOG_WARNING, "Unsupported version\n");
354 stream_count = avio_rb16(pb);
355 avio_skip(pb, 6*stream_count);
356 rule_count = avio_rb16(pb);
357 avio_skip(pb, 2*rule_count);
358 property_count = avio_rb16(pb);
359 for(i=0; i<property_count; i++){
360 uint8_t name[128], val[128];
362 if (avio_rb16(pb) != 0) {
363 av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
364 goto skip; //FIXME skip just this one
366 get_str8(pb, name, sizeof(name));
367 switch(avio_rb32(pb)) {
368 case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
369 av_dict_set(&s->metadata, name, val, 0);
371 default: avio_skip(pb, avio_rb16(pb));
376 if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
378 av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
381 st->codecpar->codec_tag = avio_rl32(pb);
382 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
383 st->codecpar->codec_tag);
384 av_log(s, AV_LOG_TRACE, "%"PRIX32" %X\n",
385 st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0'));
386 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
388 st->codecpar->width = avio_rb16(pb);
389 st->codecpar->height = avio_rb16(pb);
390 avio_skip(pb, 2); // looks like bits per sample
391 avio_skip(pb, 4); // always zero?
392 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
393 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
396 if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
400 av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
401 0x10000, fps, (1 << 30) - 1);
402 #if FF_API_R_FRAME_RATE
403 st->r_frame_rate = st->avg_frame_rate;
405 } else if (s->error_recognition & AV_EF_EXPLODE) {
406 av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
407 return AVERROR_INVALIDDATA;
412 /* skip codec info */
413 size = avio_tell(pb) - codec_pos;
414 if (codec_data_size >= size) {
415 avio_skip(pb, codec_data_size - size);
417 av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
423 /** this function assumes that the demuxer has already seeked to the start
424 * of the INDX chunk, and will bail out if not. */
425 static int rm_read_index(AVFormatContext *s)
427 AVIOContext *pb = s->pb;
428 unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
432 if (avio_rl32(pb) != MKTAG('I','N','D','X'))
434 size = avio_rb32(pb);
438 n_pkts = avio_rb32(pb);
439 str_id = avio_rb16(pb);
440 next_off = avio_rb32(pb);
441 for (n = 0; n < s->nb_streams; n++)
442 if (s->streams[n]->id == str_id) {
446 if (n == s->nb_streams) {
447 av_log(s, AV_LOG_ERROR,
448 "Invalid stream index %d for index at pos %"PRId64"\n",
449 str_id, avio_tell(pb));
451 } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
452 av_log(s, AV_LOG_ERROR,
453 "Nr. of packets in packet index for stream index %d "
454 "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
455 str_id, avio_size(pb), avio_tell(pb),
456 (avio_size(pb) - avio_tell(pb)) / 14);
460 for (n = 0; n < n_pkts; n++) {
464 avio_skip(pb, 4); /* packet no. */
466 av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
470 if (next_off && avio_tell(pb) < next_off &&
471 avio_seek(pb, next_off, SEEK_SET) < 0) {
472 av_log(s, AV_LOG_ERROR,
473 "Non-linear index detected, not supported\n");
481 static int rm_read_header_old(AVFormatContext *s)
483 RMDemuxContext *rm = s->priv_data;
487 st = avformat_new_stream(s, NULL);
490 st->priv_data = ff_rm_alloc_rmstream();
492 return AVERROR(ENOMEM);
493 return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
496 static int rm_read_multi(AVFormatContext *s, AVIOContext *pb,
497 AVStream *st, char *mime)
499 int number_of_streams = avio_rb16(pb);
503 for (i = 0; i<number_of_streams; i++)
505 number_of_mdpr = avio_rb16(pb);
506 if (number_of_mdpr != 1) {
507 avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
509 for (i = 0; i < number_of_mdpr; i++) {
512 st2 = avformat_new_stream(s, NULL);
514 ret = AVERROR(ENOMEM);
517 st2->id = st->id + (i<<16);
518 st2->codecpar->bit_rate = st->codecpar->bit_rate;
519 st2->start_time = st->start_time;
520 st2->duration = st->duration;
521 st2->codecpar->codec_type = AVMEDIA_TYPE_DATA;
522 st2->priv_data = ff_rm_alloc_rmstream();
524 return AVERROR(ENOMEM);
528 size2 = avio_rb32(pb);
529 ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
537 static int rm_read_header(AVFormatContext *s)
539 RMDemuxContext *rm = s->priv_data;
541 AVIOContext *pb = s->pb;
544 unsigned int start_time, duration;
545 unsigned int data_off = 0, indx_off = 0;
546 char buf[128], mime[128];
553 if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
554 /* very old .ra format */
555 return rm_read_header_old(s);
556 } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
560 tag_size = avio_rb32(pb);
561 avio_skip(pb, tag_size - 8);
564 ret = AVERROR_INVALIDDATA;
568 tag_size = avio_rb32(pb);
570 av_log(s, AV_LOG_TRACE, "tag=%s size=%d\n",
571 av_fourcc2str(tag), tag_size);
572 if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
575 case MKTAG('P', 'R', 'O', 'P'):
577 avio_rb32(pb); /* max bit rate */
578 avio_rb32(pb); /* avg bit rate */
579 avio_rb32(pb); /* max packet size */
580 avio_rb32(pb); /* avg packet size */
581 avio_rb32(pb); /* nb packets */
582 duration = avio_rb32(pb); /* duration */
583 s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
584 avio_rb32(pb); /* preroll */
585 indx_off = avio_rb32(pb); /* index offset */
586 data_off = avio_rb32(pb); /* data offset */
587 avio_rb16(pb); /* nb streams */
588 flags = avio_rb16(pb); /* flags */
590 case MKTAG('C', 'O', 'N', 'T'):
591 rm_read_metadata(s, pb, 1);
593 case MKTAG('M', 'D', 'P', 'R'):
594 st = avformat_new_stream(s, NULL);
596 ret = AVERROR(ENOMEM);
599 st->id = avio_rb16(pb);
600 avio_rb32(pb); /* max bit rate */
601 st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */
602 avio_rb32(pb); /* max packet size */
603 avio_rb32(pb); /* avg packet size */
604 start_time = avio_rb32(pb); /* start time */
605 avio_rb32(pb); /* preroll */
606 duration = avio_rb32(pb); /* duration */
607 st->start_time = start_time;
608 st->duration = duration;
610 s->duration = AV_NOPTS_VALUE;
611 get_str8(pb, buf, sizeof(buf)); /* desc */
612 get_str8(pb, mime, sizeof(mime)); /* mimetype */
613 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
614 st->priv_data = ff_rm_alloc_rmstream();
616 return AVERROR(ENOMEM);
618 size = avio_rb32(pb);
619 codec_pos = avio_tell(pb);
621 ffio_ensure_seekback(pb, 4);
623 if (v == MKBETAG('M', 'L', 'T', 'I')) {
624 ret = rm_read_multi(s, s->pb, st, mime);
627 avio_seek(pb, codec_pos + size, SEEK_SET);
630 ret = ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
637 case MKTAG('D', 'A', 'T', 'A'):
640 /* unknown tag: skip it */
641 avio_skip(pb, tag_size - 10);
646 rm->nb_packets = avio_rb32(pb); /* number of packets */
647 if (!rm->nb_packets && (flags & 4))
648 rm->nb_packets = 3600 * 25;
649 avio_rb32(pb); /* next data header */
652 data_off = avio_tell(pb) - 18;
653 if (indx_off && (pb->seekable & AVIO_SEEKABLE_NORMAL) &&
654 !(s->flags & AVFMT_FLAG_IGNIDX) &&
655 avio_seek(pb, indx_off, SEEK_SET) >= 0) {
657 avio_seek(pb, data_off + 18, SEEK_SET);
667 static int get_num(AVIOContext *pb, int *len)
679 return (n << 16) | n1;
683 /* multiple of 20 bytes for ra144 (ugly) */
684 #define RAW_PACKET_SIZE 1000
686 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
687 RMDemuxContext *rm = s->priv_data;
688 AVIOContext *pb = s->pb;
690 uint32_t state=0xFFFFFFFF;
692 while(!avio_feof(pb)){
695 *pos= avio_tell(pb) - 3;
696 if(rm->remaining_len > 0){
697 num= rm->current_stream;
699 len= rm->remaining_len;
700 *timestamp = AV_NOPTS_VALUE;
703 state= (state<<8) + avio_r8(pb);
705 if(state == MKBETAG('I', 'N', 'D', 'X')){
707 int64_t expected_len;
710 n_pkts = avio_rb32(pb);
711 expected_len = 20 + n_pkts * 14LL;
713 if (len == 20 && expected_len <= INT_MAX)
714 /* some files don't add index entries to chunk size... */
716 else if (len != expected_len)
717 av_log(s, AV_LOG_WARNING,
718 "Index size %d (%d pkts) is wrong, should be %"PRId64".\n",
719 len, n_pkts, expected_len);
720 len -= 14; // we already read part of the index header
724 } else if (state == MKBETAG('D','A','T','A')) {
725 av_log(s, AV_LOG_WARNING,
726 "DATA tag in middle of chunk, file may be broken.\n");
729 if(state > (unsigned)0xFFFF || state <= 12)
735 *timestamp = avio_rb32(pb);
736 mlti_id = (avio_r8(pb) >> 1) - 1;
737 mlti_id = FFMAX(mlti_id, 0) << 16;
738 *flags = avio_r8(pb); /* flags */
740 for(i=0;i<s->nb_streams;i++) {
742 if (mlti_id + num == st->id)
745 if (i == s->nb_streams) {
747 /* skip packet if unknown number */
749 rm->remaining_len = 0;
759 static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb,
760 RMDemuxContext *rm, RMStream *vst,
761 AVPacket *pkt, int len, int *pseq,
765 int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
769 hdr = avio_r8(pb); len--;
772 if(type != 3){ // not frame as a part of packet
773 seq = avio_r8(pb); len--;
775 if(type != 1){ // not whole frame
776 len2 = get_num(pb, &len);
777 pos = get_num(pb, &len);
778 pic_num = avio_r8(pb); len--;
781 av_log(s, AV_LOG_ERROR, "Insufficient data\n");
784 rm->remaining_len = len;
785 if(type&1){ // frame, not slice
786 if(type == 3){ // frame as a part of packet
790 if(rm->remaining_len < len) {
791 av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
794 rm->remaining_len -= len;
795 if ((ret = av_new_packet(pkt, len + 9)) < 0)
798 AV_WL32(pkt->data + 1, 1);
799 AV_WL32(pkt->data + 5, 0);
800 if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
801 av_packet_unref(pkt);
802 av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
803 return ret < 0 ? ret : AVERROR(EIO);
807 //now we have to deal with single slice
810 if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
811 if (len2 > ffio_limit(pb, len2)) {
812 av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
813 return AVERROR_INVALIDDATA;
815 vst->slices = ((hdr & 0x3F) << 1) + 1;
816 vst->videobufsize = len2 + 8*vst->slices + 1;
817 av_packet_unref(&vst->pkt); //FIXME this should be output.
818 if ((ret = av_new_packet(&vst->pkt, vst->videobufsize)) < 0)
820 vst->videobufpos = 8*vst->slices + 1;
822 vst->curpic_num = pic_num;
823 vst->pktpos = avio_tell(pb);
826 len = FFMIN(len, pos);
828 if(++vst->cur_slice > vst->slices) {
829 av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
833 return AVERROR(ENOMEM);
834 AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
835 AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
836 if(vst->videobufpos + len > vst->videobufsize) {
837 av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
840 if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
842 vst->videobufpos += len;
843 rm->remaining_len-= len;
845 if (type == 2 || vst->videobufpos == vst->videobufsize) {
846 vst->pkt.data[0] = vst->cur_slice-1;
847 av_packet_move_ref(pkt, &vst->pkt);
848 if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
849 memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
850 vst->videobufpos - 1 - 8*vst->slices);
851 av_shrink_packet(pkt, vst->videobufpos + 8*(vst->cur_slice - vst->slices));
852 pkt->pts = AV_NOPTS_VALUE;
853 pkt->pos = vst->pktpos;
862 rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
867 if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
869 for (j=0;j<pkt->size;j+=2) {
870 FFSWAP(int, ptr[0], ptr[1]);
876 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
877 int ret = avio_read(pb, dst, n);
879 if (ret >= 0) memset(dst + ret, 0, n - ret);
880 else memset(dst , 0, n);
881 av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
887 ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb,
888 AVStream *st, RMStream *ast, int len, AVPacket *pkt,
889 int *seq, int flags, int64_t timestamp)
891 RMDemuxContext *rm = s->priv_data;
894 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
895 rm->current_stream= st->id;
896 ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, ×tamp);
898 return ret < 0 ? ret : -1; //got partial frame or error
899 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
900 if ((ast->deint_id == DEINT_ID_GENR) ||
901 (ast->deint_id == DEINT_ID_INT4) ||
902 (ast->deint_id == DEINT_ID_SIPR)) {
904 int sps = ast->sub_packet_size;
905 int cfs = ast->coded_framesize;
906 int h = ast->sub_packet_h;
907 int y = ast->sub_packet_cnt;
908 int w = ast->audio_framesize;
911 y = ast->sub_packet_cnt = 0;
913 ast->audiotimestamp = timestamp;
915 switch (ast->deint_id) {
917 for (x = 0; x < h/2; x++)
918 readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
921 for (x = 0; x < w/sps; x++)
922 readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
925 readfull(s, pb, ast->pkt.data + y * w, w);
929 if (++(ast->sub_packet_cnt) < h)
931 if (ast->deint_id == DEINT_ID_SIPR)
932 ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
934 ast->sub_packet_cnt = 0;
935 rm->audio_stream_num = st->index;
936 if (st->codecpar->block_align <= 0) {
937 av_log(s, AV_LOG_ERROR, "Invalid block alignment %d\n", st->codecpar->block_align);
938 return AVERROR_INVALIDDATA;
940 rm->audio_pkt_cnt = h * w / st->codecpar->block_align;
941 } else if ((ast->deint_id == DEINT_ID_VBRF) ||
942 (ast->deint_id == DEINT_ID_VBRS)) {
944 rm->audio_stream_num = st->index;
945 ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
946 if (ast->sub_packet_cnt) {
947 for (x = 0; x < ast->sub_packet_cnt; x++)
948 ast->sub_packet_lengths[x] = avio_rb16(pb);
949 rm->audio_pkt_cnt = ast->sub_packet_cnt;
950 ast->audiotimestamp = timestamp;
954 ret = av_get_packet(pb, pkt, len);
957 rm_ac3_swap_bytes(st, pkt);
960 ret = av_get_packet(pb, pkt, len);
965 pkt->stream_index = st->index;
967 pkt->pts = timestamp;
969 pkt->flags |= AV_PKT_FLAG_KEY;
971 return st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
975 ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb,
976 AVStream *st, RMStream *ast, AVPacket *pkt)
978 RMDemuxContext *rm = s->priv_data;
981 av_assert0 (rm->audio_pkt_cnt > 0);
983 if (ast->deint_id == DEINT_ID_VBRF ||
984 ast->deint_id == DEINT_ID_VBRS) {
985 ret = av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
989 ret = av_new_packet(pkt, st->codecpar->block_align);
992 memcpy(pkt->data, ast->pkt.data + st->codecpar->block_align * //FIXME avoid this
993 (ast->sub_packet_h * ast->audio_framesize / st->codecpar->block_align - rm->audio_pkt_cnt),
994 st->codecpar->block_align);
997 if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
998 ast->audiotimestamp = AV_NOPTS_VALUE;
999 pkt->flags = AV_PKT_FLAG_KEY;
1002 pkt->stream_index = st->index;
1004 return rm->audio_pkt_cnt;
1007 static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
1009 RMDemuxContext *rm = s->priv_data;
1010 AVStream *st = NULL; // init to silence compiler warning
1011 int i, len, res, seq = 1;
1012 int64_t timestamp, pos;
1016 if (rm->audio_pkt_cnt) {
1017 // If there are queued audio packet return them first
1018 st = s->streams[rm->audio_stream_num];
1019 res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
1024 if (rm->old_format) {
1028 ast = st->priv_data;
1029 timestamp = AV_NOPTS_VALUE;
1030 len = !ast->audio_framesize ? RAW_PACKET_SIZE :
1031 ast->coded_framesize * ast->sub_packet_h / 2;
1032 flags = (seq++ == 1) ? 2 : 0;
1033 pos = avio_tell(s->pb);
1035 len = rm_sync(s, ×tamp, &flags, &i, &pos);
1040 if (avio_feof(s->pb))
1043 return AVERROR(EIO);
1045 res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
1046 &seq, flags, timestamp);
1049 if((flags&2) && (seq&0x7F) == 1)
1050 av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1055 if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1056 || st->discard >= AVDISCARD_ALL){
1057 av_packet_unref(pkt);
1065 static int rm_read_close(AVFormatContext *s)
1069 for (i=0;i<s->nb_streams;i++)
1070 ff_rm_free_rmstream(s->streams[i]->priv_data);
1075 static int rm_probe(const AVProbeData *p)
1077 /* check file header */
1078 if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1079 p->buf[2] == 'M' && p->buf[3] == 'F' &&
1080 p->buf[4] == 0 && p->buf[5] == 0) ||
1081 (p->buf[0] == '.' && p->buf[1] == 'r' &&
1082 p->buf[2] == 'a' && p->buf[3] == 0xfd))
1083 return AVPROBE_SCORE_MAX;
1088 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1089 int64_t *ppos, int64_t pos_limit)
1091 RMDemuxContext *rm = s->priv_data;
1093 int stream_index2, flags, len, h;
1098 return AV_NOPTS_VALUE;
1100 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1101 return AV_NOPTS_VALUE;
1103 rm->remaining_len=0;
1108 len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1110 return AV_NOPTS_VALUE;
1112 st = s->streams[stream_index2];
1113 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1114 h= avio_r8(s->pb); len--;
1116 seq = avio_r8(s->pb); len--;
1120 if((flags&2) && (seq&0x7F) == 1){
1121 av_log(s, AV_LOG_TRACE, "%d %d-%d %"PRId64" %d\n",
1122 flags, stream_index2, stream_index, dts, seq);
1123 av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1124 if(stream_index2 == stream_index)
1128 avio_skip(s->pb, len);
1134 static int rm_read_seek(AVFormatContext *s, int stream_index,
1135 int64_t pts, int flags)
1137 RMDemuxContext *rm = s->priv_data;
1139 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1141 rm->audio_pkt_cnt = 0;
1146 AVInputFormat ff_rm_demuxer = {
1148 .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1149 .priv_data_size = sizeof(RMDemuxContext),
1150 .read_probe = rm_probe,
1151 .read_header = rm_read_header,
1152 .read_packet = rm_read_packet,
1153 .read_close = rm_read_close,
1154 .read_timestamp = rm_read_dts,
1155 .read_seek = rm_read_seek,
1158 AVInputFormat ff_rdt_demuxer = {
1160 .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1161 .priv_data_size = sizeof(RMDemuxContext),
1162 .read_close = rm_read_close,
1163 .flags = AVFMT_NOFILE,
1166 static int ivr_probe(const AVProbeData *p)
1168 if (memcmp(p->buf, ".R1M\x0\x1\x1", 7) &&
1169 memcmp(p->buf, ".REC", 4))
1172 return AVPROBE_SCORE_MAX;
1175 static int ivr_read_header(AVFormatContext *s)
1177 unsigned tag, type, len, tlen, value;
1178 int i, j, n, count, nb_streams = 0, ret;
1179 uint8_t key[256], val[256];
1180 AVIOContext *pb = s->pb;
1182 int64_t pos, offset=0, temp;
1184 pos = avio_tell(pb);
1185 tag = avio_rl32(pb);
1186 if (tag == MKTAG('.','R','1','M')) {
1187 if (avio_rb16(pb) != 1)
1188 return AVERROR_INVALIDDATA;
1189 if (avio_r8(pb) != 1)
1190 return AVERROR_INVALIDDATA;
1191 len = avio_rb32(pb);
1194 temp = avio_rb64(pb);
1195 while (!avio_feof(pb) && temp) {
1197 temp = avio_rb64(pb);
1200 return AVERROR_INVALIDDATA;
1201 avio_skip(pb, offset - avio_tell(pb));
1202 if (avio_r8(pb) != 1)
1203 return AVERROR_INVALIDDATA;
1204 len = avio_rb32(pb);
1206 if (avio_r8(pb) != 2)
1207 return AVERROR_INVALIDDATA;
1209 pos = avio_tell(pb);
1210 tag = avio_rl32(pb);
1213 if (tag != MKTAG('.','R','E','C'))
1214 return AVERROR_INVALIDDATA;
1216 if (avio_r8(pb) != 0)
1217 return AVERROR_INVALIDDATA;
1218 count = avio_rb32(pb);
1219 for (i = 0; i < count; i++) {
1221 return AVERROR_INVALIDDATA;
1224 tlen = avio_rb32(pb);
1225 avio_get_str(pb, tlen, key, sizeof(key));
1226 len = avio_rb32(pb);
1228 avio_get_str(pb, len, val, sizeof(val));
1229 av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1230 } else if (type == 4) {
1231 av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1232 for (j = 0; j < len; j++) {
1234 return AVERROR_INVALIDDATA;
1235 av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1237 av_log(s, AV_LOG_DEBUG, "'\n");
1238 } else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) {
1239 nb_streams = value = avio_rb32(pb);
1240 } else if (len == 4 && type == 3) {
1241 value = avio_rb32(pb);
1242 av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1244 av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1249 for (n = 0; n < nb_streams; n++) {
1250 st = avformat_new_stream(s, NULL);
1252 return AVERROR(ENOMEM);
1253 st->priv_data = ff_rm_alloc_rmstream();
1255 return AVERROR(ENOMEM);
1257 if (avio_r8(pb) != 1)
1258 return AVERROR_INVALIDDATA;
1260 count = avio_rb32(pb);
1261 for (i = 0; i < count; i++) {
1263 return AVERROR_INVALIDDATA;
1266 tlen = avio_rb32(pb);
1267 avio_get_str(pb, tlen, key, sizeof(key));
1268 len = avio_rb32(pb);
1270 avio_get_str(pb, len, val, sizeof(val));
1271 av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1272 } else if (type == 4 && !strncmp(key, "OpaqueData", tlen)) {
1273 ret = ffio_ensure_seekback(pb, 4);
1276 if (avio_rb32(pb) == MKBETAG('M', 'L', 'T', 'I')) {
1277 ret = rm_read_multi(s, pb, st, NULL);
1280 return AVERROR_INVALIDDATA;
1281 avio_seek(pb, -4, SEEK_CUR);
1282 ret = ff_rm_read_mdpr_codecdata(s, pb, st, st->priv_data, len, NULL);
1287 } else if (type == 4) {
1290 av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1291 for (j = 0; j < len; j++)
1292 av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1293 av_log(s, AV_LOG_DEBUG, "'\n");
1294 } else if (len == 4 && type == 3 && !strncmp(key, "Duration", tlen)) {
1295 st->duration = avio_rb32(pb);
1296 } else if (len == 4 && type == 3) {
1297 value = avio_rb32(pb);
1298 av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1300 av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1306 if (avio_r8(pb) != 6)
1307 return AVERROR_INVALIDDATA;
1309 avio_skip(pb, avio_rb64(pb) + pos - avio_tell(s->pb));
1310 if (avio_r8(pb) != 8)
1311 return AVERROR_INVALIDDATA;
1317 static int ivr_read_packet(AVFormatContext *s, AVPacket *pkt)
1319 RMDemuxContext *rm = s->priv_data;
1320 int ret = AVERROR_EOF, opcode;
1321 AVIOContext *pb = s->pb;
1322 unsigned size, index;
1325 if (avio_feof(pb) || rm->data_end)
1328 pos = avio_tell(pb);
1331 if (rm->audio_pkt_cnt) {
1332 // If there are queued audio packet return them first
1335 st = s->streams[rm->audio_stream_num];
1336 ret = ff_rm_retrieve_cache(s, pb, st, st->priv_data, pkt);
1341 if (rm->remaining_len) {
1342 avio_skip(pb, rm->remaining_len);
1343 rm->remaining_len = 0;
1349 opcode = avio_r8(pb);
1354 pts = avio_rb32(pb);
1355 index = avio_rb16(pb);
1356 if (index >= s->nb_streams)
1357 return AVERROR_INVALIDDATA;
1360 size = avio_rb32(pb);
1363 if (size < 1 || size > INT_MAX/4) {
1364 av_log(s, AV_LOG_ERROR, "size %u is invalid\n", size);
1365 return AVERROR_INVALIDDATA;
1368 st = s->streams[index];
1369 ret = ff_rm_parse_packet(s, pb, st, st->priv_data, size, pkt,
1379 pkt->stream_index = index;
1380 } else if (opcode == 7) {
1381 pos = avio_rb64(pb);
1387 av_log(s, AV_LOG_ERROR, "Unsupported opcode=%d at %"PRIX64"\n", opcode, avio_tell(pb) - 1);
1388 return AVERROR(EIO);
1398 AVInputFormat ff_ivr_demuxer = {
1400 .long_name = NULL_IF_CONFIG_SMALL("IVR (Internet Video Recording)"),
1401 .priv_data_size = sizeof(RMDemuxContext),
1402 .read_probe = ivr_probe,
1403 .read_header = ivr_read_header,
1404 .read_packet = ivr_read_packet,
1405 .read_close = rm_read_close,
1406 .extensions = "ivr",