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 ast->coded_framesize = coded_framesize = avio_rb32(pb); /* coded frame size */
169 avio_rb32(pb); /* ??? */
170 bytes_per_minute = avio_rb32(pb);
172 if (bytes_per_minute)
173 st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
175 avio_rb32(pb); /* ??? */
176 ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
177 st->codecpar->block_align= avio_rb16(pb); /* frame size */
178 ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
179 avio_rb16(pb); /* ??? */
181 avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
183 st->codecpar->sample_rate = avio_rb16(pb);
185 st->codecpar->channels = avio_rb16(pb);
187 ast->deint_id = avio_rl32(pb);
188 avio_read(pb, buf, 4);
192 get_str8(pb, buf, sizeof(buf)); /* desc */
193 ast->deint_id = AV_RL32(buf);
194 get_str8(pb, buf, sizeof(buf)); /* desc */
196 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
197 st->codecpar->codec_tag = AV_RL32(buf);
198 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
199 st->codecpar->codec_tag);
201 switch (st->codecpar->codec_id) {
202 case AV_CODEC_ID_AC3:
203 st->need_parsing = AVSTREAM_PARSE_FULL;
205 case AV_CODEC_ID_RA_288:
206 st->codecpar->extradata_size= 0;
207 av_freep(&st->codecpar->extradata);
208 ast->audio_framesize = st->codecpar->block_align;
209 st->codecpar->block_align = coded_framesize;
211 case AV_CODEC_ID_COOK:
212 st->need_parsing = AVSTREAM_PARSE_HEADERS;
213 case AV_CODEC_ID_ATRAC3:
214 case AV_CODEC_ID_SIPR:
216 codecdata_length = 0;
218 avio_rb16(pb); avio_r8(pb);
221 codecdata_length = avio_rb32(pb);
222 if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
223 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
228 ast->audio_framesize = st->codecpar->block_align;
229 if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
231 av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
235 st->codecpar->block_align = ff_sipr_subpk_size[flavor];
236 st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
238 if(sub_packet_size <= 0){
239 av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
242 st->codecpar->block_align = ast->sub_packet_size;
244 if ((ret = rm_read_extradata(s, pb, st->codecpar, 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(s, pb, st->codecpar, 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->codecpar->block_align <= 0 ||
295 ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
296 ast->audio_framesize * sub_packet_h < st->codecpar->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(s, pb, st->codecpar, codec_data_size)) < 0)
339 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
340 st->codecpar->codec_tag = AV_RL32(st->codecpar->extradata);
341 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
342 st->codecpar->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->codecpar->codec_tag = avio_rl32(pb);
378 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
379 st->codecpar->codec_tag);
380 av_log(s, AV_LOG_TRACE, "%"PRIX32" %X\n",
381 st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0'));
382 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
384 st->codecpar->width = avio_rb16(pb);
385 st->codecpar->height = avio_rb16(pb);
386 avio_skip(pb, 2); // looks like bits per sample
387 avio_skip(pb, 4); // always zero?
388 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
389 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
392 if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
396 av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
397 0x10000, fps, (1 << 30) - 1);
398 #if FF_API_R_FRAME_RATE
399 st->r_frame_rate = st->avg_frame_rate;
401 } else if (s->error_recognition & AV_EF_EXPLODE) {
402 av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
403 return AVERROR_INVALIDDATA;
408 /* skip codec info */
409 size = avio_tell(pb) - codec_pos;
410 if (codec_data_size >= size) {
411 avio_skip(pb, codec_data_size - size);
413 av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
419 /** this function assumes that the demuxer has already seeked to the start
420 * of the INDX chunk, and will bail out if not. */
421 static int rm_read_index(AVFormatContext *s)
423 AVIOContext *pb = s->pb;
424 unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
428 if (avio_rl32(pb) != MKTAG('I','N','D','X'))
430 size = avio_rb32(pb);
434 n_pkts = avio_rb32(pb);
435 str_id = avio_rb16(pb);
436 next_off = avio_rb32(pb);
437 for (n = 0; n < s->nb_streams; n++)
438 if (s->streams[n]->id == str_id) {
442 if (n == s->nb_streams) {
443 av_log(s, AV_LOG_ERROR,
444 "Invalid stream index %d for index at pos %"PRId64"\n",
445 str_id, avio_tell(pb));
447 } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
448 av_log(s, AV_LOG_ERROR,
449 "Nr. of packets in packet index for stream index %d "
450 "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
451 str_id, avio_size(pb), avio_tell(pb),
452 (avio_size(pb) - avio_tell(pb)) / 14);
456 for (n = 0; n < n_pkts; n++) {
460 avio_skip(pb, 4); /* packet no. */
462 av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
466 if (next_off && avio_tell(pb) < next_off &&
467 avio_seek(pb, next_off, SEEK_SET) < 0) {
468 av_log(s, AV_LOG_ERROR,
469 "Non-linear index detected, not supported\n");
477 static int rm_read_header_old(AVFormatContext *s)
479 RMDemuxContext *rm = s->priv_data;
483 st = avformat_new_stream(s, NULL);
486 st->priv_data = ff_rm_alloc_rmstream();
488 return AVERROR(ENOMEM);
489 return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
492 static int rm_read_multi(AVFormatContext *s, AVIOContext *pb,
493 AVStream *st, char *mime)
495 int number_of_streams = avio_rb16(pb);
499 for (i = 0; i<number_of_streams; i++)
501 number_of_mdpr = avio_rb16(pb);
502 if (number_of_mdpr != 1) {
503 avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
505 for (i = 0; i < number_of_mdpr; i++) {
508 st2 = avformat_new_stream(s, NULL);
510 ret = AVERROR(ENOMEM);
513 st2->id = st->id + (i<<16);
514 st2->codecpar->bit_rate = st->codecpar->bit_rate;
515 st2->start_time = st->start_time;
516 st2->duration = st->duration;
517 st2->codecpar->codec_type = AVMEDIA_TYPE_DATA;
518 st2->priv_data = ff_rm_alloc_rmstream();
520 return AVERROR(ENOMEM);
524 size2 = avio_rb32(pb);
525 ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
533 static int rm_read_header(AVFormatContext *s)
535 RMDemuxContext *rm = s->priv_data;
537 AVIOContext *pb = s->pb;
540 unsigned int start_time, duration;
541 unsigned int data_off = 0, indx_off = 0;
542 char buf[128], mime[128];
549 if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
550 /* very old .ra format */
551 return rm_read_header_old(s);
552 } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
556 tag_size = avio_rb32(pb);
557 avio_skip(pb, tag_size - 8);
560 ret = AVERROR_INVALIDDATA;
564 tag_size = avio_rb32(pb);
566 av_log(s, AV_LOG_TRACE, "tag=%s size=%d\n",
567 av_fourcc2str(tag), tag_size);
568 if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
571 case MKTAG('P', 'R', 'O', 'P'):
573 avio_rb32(pb); /* max bit rate */
574 avio_rb32(pb); /* avg bit rate */
575 avio_rb32(pb); /* max packet size */
576 avio_rb32(pb); /* avg packet size */
577 avio_rb32(pb); /* nb packets */
578 duration = avio_rb32(pb); /* duration */
579 s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
580 avio_rb32(pb); /* preroll */
581 indx_off = avio_rb32(pb); /* index offset */
582 data_off = avio_rb32(pb); /* data offset */
583 avio_rb16(pb); /* nb streams */
584 flags = avio_rb16(pb); /* flags */
586 case MKTAG('C', 'O', 'N', 'T'):
587 rm_read_metadata(s, pb, 1);
589 case MKTAG('M', 'D', 'P', 'R'):
590 st = avformat_new_stream(s, NULL);
592 ret = AVERROR(ENOMEM);
595 st->id = avio_rb16(pb);
596 avio_rb32(pb); /* max bit rate */
597 st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */
598 avio_rb32(pb); /* max packet size */
599 avio_rb32(pb); /* avg packet size */
600 start_time = avio_rb32(pb); /* start time */
601 avio_rb32(pb); /* preroll */
602 duration = avio_rb32(pb); /* duration */
603 st->start_time = start_time;
604 st->duration = duration;
606 s->duration = AV_NOPTS_VALUE;
607 get_str8(pb, buf, sizeof(buf)); /* desc */
608 get_str8(pb, mime, sizeof(mime)); /* mimetype */
609 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
610 st->priv_data = ff_rm_alloc_rmstream();
612 return AVERROR(ENOMEM);
614 size = avio_rb32(pb);
615 codec_pos = avio_tell(pb);
617 ffio_ensure_seekback(pb, 4);
619 if (v == MKBETAG('M', 'L', 'T', 'I')) {
620 ret = rm_read_multi(s, s->pb, st, mime);
623 avio_seek(pb, codec_pos + size, SEEK_SET);
626 ret = ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
633 case MKTAG('D', 'A', 'T', 'A'):
636 /* unknown tag: skip it */
637 avio_skip(pb, tag_size - 10);
642 rm->nb_packets = avio_rb32(pb); /* number of packets */
643 if (!rm->nb_packets && (flags & 4))
644 rm->nb_packets = 3600 * 25;
645 avio_rb32(pb); /* next data header */
648 data_off = avio_tell(pb) - 18;
649 if (indx_off && (pb->seekable & AVIO_SEEKABLE_NORMAL) &&
650 !(s->flags & AVFMT_FLAG_IGNIDX) &&
651 avio_seek(pb, indx_off, SEEK_SET) >= 0) {
653 avio_seek(pb, data_off + 18, SEEK_SET);
663 static int get_num(AVIOContext *pb, int *len)
675 return (n << 16) | n1;
679 /* multiple of 20 bytes for ra144 (ugly) */
680 #define RAW_PACKET_SIZE 1000
682 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
683 RMDemuxContext *rm = s->priv_data;
684 AVIOContext *pb = s->pb;
686 uint32_t state=0xFFFFFFFF;
688 while(!avio_feof(pb)){
691 *pos= avio_tell(pb) - 3;
692 if(rm->remaining_len > 0){
693 num= rm->current_stream;
695 len= rm->remaining_len;
696 *timestamp = AV_NOPTS_VALUE;
699 state= (state<<8) + avio_r8(pb);
701 if(state == MKBETAG('I', 'N', 'D', 'X')){
702 int n_pkts, expected_len;
705 n_pkts = avio_rb32(pb);
706 expected_len = 20 + n_pkts * 14;
708 /* some files don't add index entries to chunk size... */
710 else if (len != expected_len)
711 av_log(s, AV_LOG_WARNING,
712 "Index size %d (%d pkts) is wrong, should be %d.\n",
713 len, n_pkts, expected_len);
714 len -= 14; // we already read part of the index header
718 } else if (state == MKBETAG('D','A','T','A')) {
719 av_log(s, AV_LOG_WARNING,
720 "DATA tag in middle of chunk, file may be broken.\n");
723 if(state > (unsigned)0xFFFF || state <= 12)
729 *timestamp = avio_rb32(pb);
730 mlti_id = (avio_r8(pb) >> 1) - 1;
731 mlti_id = FFMAX(mlti_id, 0) << 16;
732 *flags = avio_r8(pb); /* flags */
734 for(i=0;i<s->nb_streams;i++) {
736 if (mlti_id + num == st->id)
739 if (i == s->nb_streams) {
741 /* skip packet if unknown number */
743 rm->remaining_len = 0;
753 static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb,
754 RMDemuxContext *rm, RMStream *vst,
755 AVPacket *pkt, int len, int *pseq,
759 int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
763 hdr = avio_r8(pb); len--;
766 if(type != 3){ // not frame as a part of packet
767 seq = avio_r8(pb); len--;
769 if(type != 1){ // not whole frame
770 len2 = get_num(pb, &len);
771 pos = get_num(pb, &len);
772 pic_num = avio_r8(pb); len--;
775 av_log(s, AV_LOG_ERROR, "Insufficient data\n");
778 rm->remaining_len = len;
779 if(type&1){ // frame, not slice
780 if(type == 3){ // frame as a part of packet
784 if(rm->remaining_len < len) {
785 av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
788 rm->remaining_len -= len;
789 if ((ret = av_new_packet(pkt, len + 9)) < 0)
792 AV_WL32(pkt->data + 1, 1);
793 AV_WL32(pkt->data + 5, 0);
794 if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
795 av_packet_unref(pkt);
796 av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
797 return ret < 0 ? ret : AVERROR(EIO);
801 //now we have to deal with single slice
804 if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
805 if (len2 > ffio_limit(pb, len2)) {
806 av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
807 return AVERROR_INVALIDDATA;
809 vst->slices = ((hdr & 0x3F) << 1) + 1;
810 vst->videobufsize = len2 + 8*vst->slices + 1;
811 av_packet_unref(&vst->pkt); //FIXME this should be output.
812 if ((ret = av_new_packet(&vst->pkt, vst->videobufsize)) < 0)
814 memset(vst->pkt.data, 0, vst->pkt.size);
815 vst->videobufpos = 8*vst->slices + 1;
817 vst->curpic_num = pic_num;
818 vst->pktpos = avio_tell(pb);
821 len = FFMIN(len, pos);
823 if(++vst->cur_slice > vst->slices) {
824 av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
828 return AVERROR(ENOMEM);
829 AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
830 AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
831 if(vst->videobufpos + len > vst->videobufsize) {
832 av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
835 if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
837 vst->videobufpos += len;
838 rm->remaining_len-= len;
840 if (type == 2 || vst->videobufpos == vst->videobufsize) {
841 vst->pkt.data[0] = vst->cur_slice-1;
842 av_packet_move_ref(pkt, &vst->pkt);
843 if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
844 memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
845 vst->videobufpos - 1 - 8*vst->slices);
846 pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
847 pkt->pts = AV_NOPTS_VALUE;
848 pkt->pos = vst->pktpos;
857 rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
862 if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
864 for (j=0;j<pkt->size;j+=2) {
865 FFSWAP(int, ptr[0], ptr[1]);
871 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
872 int ret = avio_read(pb, dst, n);
874 if (ret >= 0) memset(dst + ret, 0, n - ret);
875 else memset(dst , 0, n);
876 av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
882 ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb,
883 AVStream *st, RMStream *ast, int len, AVPacket *pkt,
884 int *seq, int flags, int64_t timestamp)
886 RMDemuxContext *rm = s->priv_data;
889 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
890 rm->current_stream= st->id;
891 ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, ×tamp);
893 return ret < 0 ? ret : -1; //got partial frame or error
894 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
895 if ((ast->deint_id == DEINT_ID_GENR) ||
896 (ast->deint_id == DEINT_ID_INT4) ||
897 (ast->deint_id == DEINT_ID_SIPR)) {
899 int sps = ast->sub_packet_size;
900 int cfs = ast->coded_framesize;
901 int h = ast->sub_packet_h;
902 int y = ast->sub_packet_cnt;
903 int w = ast->audio_framesize;
906 y = ast->sub_packet_cnt = 0;
908 ast->audiotimestamp = timestamp;
910 switch (ast->deint_id) {
912 for (x = 0; x < h/2; x++)
913 readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
916 for (x = 0; x < w/sps; x++)
917 readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
920 readfull(s, pb, ast->pkt.data + y * w, w);
924 if (++(ast->sub_packet_cnt) < h)
926 if (ast->deint_id == DEINT_ID_SIPR)
927 ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
929 ast->sub_packet_cnt = 0;
930 rm->audio_stream_num = st->index;
931 if (st->codecpar->block_align <= 0) {
932 av_log(s, AV_LOG_ERROR, "Invalid block alignment %d\n", st->codecpar->block_align);
933 return AVERROR_INVALIDDATA;
935 rm->audio_pkt_cnt = h * w / st->codecpar->block_align;
936 } else if ((ast->deint_id == DEINT_ID_VBRF) ||
937 (ast->deint_id == DEINT_ID_VBRS)) {
939 rm->audio_stream_num = st->index;
940 ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
941 if (ast->sub_packet_cnt) {
942 for (x = 0; x < ast->sub_packet_cnt; x++)
943 ast->sub_packet_lengths[x] = avio_rb16(pb);
944 rm->audio_pkt_cnt = ast->sub_packet_cnt;
945 ast->audiotimestamp = timestamp;
949 ret = av_get_packet(pb, pkt, len);
952 rm_ac3_swap_bytes(st, pkt);
955 ret = av_get_packet(pb, pkt, len);
960 pkt->stream_index = st->index;
962 pkt->pts = timestamp;
964 pkt->flags |= AV_PKT_FLAG_KEY;
966 return st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
970 ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb,
971 AVStream *st, RMStream *ast, AVPacket *pkt)
973 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 ret = av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
984 ret = av_new_packet(pkt, st->codecpar->block_align);
987 memcpy(pkt->data, ast->pkt.data + st->codecpar->block_align * //FIXME avoid this
988 (ast->sub_packet_h * ast->audio_framesize / st->codecpar->block_align - rm->audio_pkt_cnt),
989 st->codecpar->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 (avio_feof(s->pb))
1038 return AVERROR(EIO);
1040 res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
1041 &seq, flags, timestamp);
1044 if((flags&2) && (seq&0x7F) == 1)
1045 av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1050 if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1051 || st->discard >= AVDISCARD_ALL){
1052 av_packet_unref(pkt);
1060 static int rm_read_close(AVFormatContext *s)
1064 for (i=0;i<s->nb_streams;i++)
1065 ff_rm_free_rmstream(s->streams[i]->priv_data);
1070 static int rm_probe(const AVProbeData *p)
1072 /* check file header */
1073 if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1074 p->buf[2] == 'M' && p->buf[3] == 'F' &&
1075 p->buf[4] == 0 && p->buf[5] == 0) ||
1076 (p->buf[0] == '.' && p->buf[1] == 'r' &&
1077 p->buf[2] == 'a' && p->buf[3] == 0xfd))
1078 return AVPROBE_SCORE_MAX;
1083 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1084 int64_t *ppos, int64_t pos_limit)
1086 RMDemuxContext *rm = s->priv_data;
1088 int stream_index2, flags, len, h;
1093 return AV_NOPTS_VALUE;
1095 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1096 return AV_NOPTS_VALUE;
1098 rm->remaining_len=0;
1103 len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1105 return AV_NOPTS_VALUE;
1107 st = s->streams[stream_index2];
1108 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1109 h= avio_r8(s->pb); len--;
1111 seq = avio_r8(s->pb); len--;
1115 if((flags&2) && (seq&0x7F) == 1){
1116 av_log(s, AV_LOG_TRACE, "%d %d-%d %"PRId64" %d\n",
1117 flags, stream_index2, stream_index, dts, seq);
1118 av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1119 if(stream_index2 == stream_index)
1123 avio_skip(s->pb, len);
1129 static int rm_read_seek(AVFormatContext *s, int stream_index,
1130 int64_t pts, int flags)
1132 RMDemuxContext *rm = s->priv_data;
1134 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1136 rm->audio_pkt_cnt = 0;
1141 AVInputFormat ff_rm_demuxer = {
1143 .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1144 .priv_data_size = sizeof(RMDemuxContext),
1145 .read_probe = rm_probe,
1146 .read_header = rm_read_header,
1147 .read_packet = rm_read_packet,
1148 .read_close = rm_read_close,
1149 .read_timestamp = rm_read_dts,
1150 .read_seek = rm_read_seek,
1153 AVInputFormat ff_rdt_demuxer = {
1155 .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1156 .priv_data_size = sizeof(RMDemuxContext),
1157 .read_close = rm_read_close,
1158 .flags = AVFMT_NOFILE,
1161 static int ivr_probe(const AVProbeData *p)
1163 if (memcmp(p->buf, ".R1M\x0\x1\x1", 7) &&
1164 memcmp(p->buf, ".REC", 4))
1167 return AVPROBE_SCORE_MAX;
1170 static int ivr_read_header(AVFormatContext *s)
1172 unsigned tag, type, len, tlen, value;
1173 int i, j, n, count, nb_streams = 0, ret;
1174 uint8_t key[256], val[256];
1175 AVIOContext *pb = s->pb;
1177 int64_t pos, offset=0, temp;
1179 pos = avio_tell(pb);
1180 tag = avio_rl32(pb);
1181 if (tag == MKTAG('.','R','1','M')) {
1182 if (avio_rb16(pb) != 1)
1183 return AVERROR_INVALIDDATA;
1184 if (avio_r8(pb) != 1)
1185 return AVERROR_INVALIDDATA;
1186 len = avio_rb32(pb);
1189 temp = avio_rb64(pb);
1190 while (!avio_feof(pb) && temp) {
1192 temp = avio_rb64(pb);
1195 return AVERROR_INVALIDDATA;
1196 avio_skip(pb, offset - avio_tell(pb));
1197 if (avio_r8(pb) != 1)
1198 return AVERROR_INVALIDDATA;
1199 len = avio_rb32(pb);
1201 if (avio_r8(pb) != 2)
1202 return AVERROR_INVALIDDATA;
1204 pos = avio_tell(pb);
1205 tag = avio_rl32(pb);
1208 if (tag != MKTAG('.','R','E','C'))
1209 return AVERROR_INVALIDDATA;
1211 if (avio_r8(pb) != 0)
1212 return AVERROR_INVALIDDATA;
1213 count = avio_rb32(pb);
1214 for (i = 0; i < count; i++) {
1216 return AVERROR_INVALIDDATA;
1219 tlen = avio_rb32(pb);
1220 avio_get_str(pb, tlen, key, sizeof(key));
1221 len = avio_rb32(pb);
1223 avio_get_str(pb, len, val, sizeof(val));
1224 av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1225 } else if (type == 4) {
1226 av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1227 for (j = 0; j < len; j++) {
1229 return AVERROR_INVALIDDATA;
1230 av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1232 av_log(s, AV_LOG_DEBUG, "'\n");
1233 } else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) {
1234 nb_streams = value = avio_rb32(pb);
1235 } else if (len == 4 && type == 3) {
1236 value = avio_rb32(pb);
1237 av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1239 av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1244 for (n = 0; n < nb_streams; n++) {
1245 st = avformat_new_stream(s, NULL);
1247 return AVERROR(ENOMEM);
1248 st->priv_data = ff_rm_alloc_rmstream();
1250 return AVERROR(ENOMEM);
1252 if (avio_r8(pb) != 1)
1253 return AVERROR_INVALIDDATA;
1255 count = avio_rb32(pb);
1256 for (i = 0; i < count; i++) {
1258 return AVERROR_INVALIDDATA;
1261 tlen = avio_rb32(pb);
1262 avio_get_str(pb, tlen, key, sizeof(key));
1263 len = avio_rb32(pb);
1265 avio_get_str(pb, len, val, sizeof(val));
1266 av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1267 } else if (type == 4 && !strncmp(key, "OpaqueData", tlen)) {
1268 ret = ffio_ensure_seekback(pb, 4);
1271 if (avio_rb32(pb) == MKBETAG('M', 'L', 'T', 'I')) {
1272 ret = rm_read_multi(s, pb, st, NULL);
1275 return AVERROR_INVALIDDATA;
1276 avio_seek(pb, -4, SEEK_CUR);
1277 ret = ff_rm_read_mdpr_codecdata(s, pb, st, st->priv_data, len, NULL);
1282 } else if (type == 4) {
1285 av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1286 for (j = 0; j < len; j++)
1287 av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1288 av_log(s, AV_LOG_DEBUG, "'\n");
1289 } else if (len == 4 && type == 3 && !strncmp(key, "Duration", tlen)) {
1290 st->duration = avio_rb32(pb);
1291 } else if (len == 4 && type == 3) {
1292 value = avio_rb32(pb);
1293 av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1295 av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1301 if (avio_r8(pb) != 6)
1302 return AVERROR_INVALIDDATA;
1304 avio_skip(pb, avio_rb64(pb) + pos - avio_tell(s->pb));
1305 if (avio_r8(pb) != 8)
1306 return AVERROR_INVALIDDATA;
1312 static int ivr_read_packet(AVFormatContext *s, AVPacket *pkt)
1314 RMDemuxContext *rm = s->priv_data;
1315 int ret = AVERROR_EOF, opcode;
1316 AVIOContext *pb = s->pb;
1317 unsigned size, index;
1320 if (avio_feof(pb) || rm->data_end)
1323 pos = avio_tell(pb);
1326 if (rm->audio_pkt_cnt) {
1327 // If there are queued audio packet return them first
1330 st = s->streams[rm->audio_stream_num];
1331 ret = ff_rm_retrieve_cache(s, pb, st, st->priv_data, pkt);
1336 if (rm->remaining_len) {
1337 avio_skip(pb, rm->remaining_len);
1338 rm->remaining_len = 0;
1344 opcode = avio_r8(pb);
1349 pts = avio_rb32(pb);
1350 index = avio_rb16(pb);
1351 if (index >= s->nb_streams)
1352 return AVERROR_INVALIDDATA;
1355 size = avio_rb32(pb);
1358 if (size < 1 || size > INT_MAX/4) {
1359 av_log(s, AV_LOG_ERROR, "size %u is invalid\n", size);
1360 return AVERROR_INVALIDDATA;
1363 st = s->streams[index];
1364 ret = ff_rm_parse_packet(s, pb, st, st->priv_data, size, pkt,
1374 pkt->stream_index = index;
1375 } else if (opcode == 7) {
1376 pos = avio_rb64(pb);
1382 av_log(s, AV_LOG_ERROR, "Unsupported opcode=%d at %"PRIX64"\n", opcode, avio_tell(pb) - 1);
1383 return AVERROR(EIO);
1393 AVInputFormat ff_ivr_demuxer = {
1395 .long_name = NULL_IF_CONFIG_SMALL("IVR (Internet Video Recording)"),
1396 .priv_data_size = sizeof(RMDemuxContext),
1397 .read_probe = ivr_probe,
1398 .read_header = ivr_read_header,
1399 .read_packet = ivr_read_packet,
1400 .read_close = rm_read_close,
1401 .extensions = "ivr",