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)
82 if (buf_size > 0) *q = '\0';
85 static void get_str8(AVIOContext *pb, char *buf, int buf_size)
87 get_strl(pb, buf, buf_size, avio_r8(pb));
90 static int rm_read_extradata(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, unsigned size)
93 av_log(s, AV_LOG_ERROR, "extradata size %u too large\n", size);
96 if (ff_get_extradata(s, par, pb, size) < 0)
97 return AVERROR(ENOMEM);
101 static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
106 for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
107 int len = wide ? avio_rb16(pb) : avio_r8(pb);
108 get_strl(pb, buf, sizeof(buf), len);
109 av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
113 RMStream *ff_rm_alloc_rmstream (void)
115 RMStream *rms = av_mallocz(sizeof(RMStream));
118 rms->curpic_num = -1;
122 void ff_rm_free_rmstream (RMStream *rms)
124 av_packet_unref(&rms->pkt);
127 static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
128 AVStream *st, RMStream *ast, int read_all)
135 version = avio_rb16(pb); /* version */
137 unsigned bytes_per_minute;
138 int header_size = avio_rb16(pb);
139 int64_t startpos = avio_tell(pb);
141 bytes_per_minute = avio_rb16(pb);
143 rm_read_metadata(s, pb, 0);
144 if ((startpos + header_size) >= avio_tell(pb) + 2) {
145 // fourcc (should always be "lpcJ")
147 get_str8(pb, buf, sizeof(buf));
149 // Skip extra header crap (this should never happen)
150 if ((startpos + header_size) > avio_tell(pb))
151 avio_skip(pb, header_size + startpos - avio_tell(pb));
152 if (bytes_per_minute)
153 st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
154 st->codecpar->sample_rate = 8000;
155 st->codecpar->channels = 1;
156 st->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
157 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
158 st->codecpar->codec_id = AV_CODEC_ID_RA_144;
159 ast->deint_id = DEINT_ID_INT0;
161 int flavor, sub_packet_h, coded_framesize, sub_packet_size;
162 int codecdata_length;
163 unsigned bytes_per_minute;
164 /* old version (4) */
165 avio_skip(pb, 2); /* unused */
166 avio_rb32(pb); /* .ra4 */
167 avio_rb32(pb); /* data size */
168 avio_rb16(pb); /* version2 */
169 avio_rb32(pb); /* header size */
170 flavor= avio_rb16(pb); /* add codec info / flavor */
171 ast->coded_framesize = coded_framesize = avio_rb32(pb); /* coded frame size */
172 avio_rb32(pb); /* ??? */
173 bytes_per_minute = avio_rb32(pb);
175 if (bytes_per_minute)
176 st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
178 avio_rb32(pb); /* ??? */
179 ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
180 st->codecpar->block_align= avio_rb16(pb); /* frame size */
181 ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
182 avio_rb16(pb); /* ??? */
184 avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
186 st->codecpar->sample_rate = avio_rb16(pb);
188 st->codecpar->channels = avio_rb16(pb);
190 ast->deint_id = avio_rl32(pb);
191 avio_read(pb, buf, 4);
195 get_str8(pb, buf, sizeof(buf)); /* desc */
196 ast->deint_id = AV_RL32(buf);
197 get_str8(pb, buf, sizeof(buf)); /* desc */
199 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
200 st->codecpar->codec_tag = AV_RL32(buf);
201 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
202 st->codecpar->codec_tag);
204 switch (st->codecpar->codec_id) {
205 case AV_CODEC_ID_AC3:
206 st->need_parsing = AVSTREAM_PARSE_FULL;
208 case AV_CODEC_ID_RA_288:
209 st->codecpar->extradata_size= 0;
210 av_freep(&st->codecpar->extradata);
211 ast->audio_framesize = st->codecpar->block_align;
212 st->codecpar->block_align = coded_framesize;
214 case AV_CODEC_ID_COOK:
215 st->need_parsing = AVSTREAM_PARSE_HEADERS;
216 case AV_CODEC_ID_ATRAC3:
217 case AV_CODEC_ID_SIPR:
219 codecdata_length = 0;
221 avio_rb16(pb); avio_r8(pb);
224 codecdata_length = avio_rb32(pb);
225 if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
226 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
231 ast->audio_framesize = st->codecpar->block_align;
232 if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
234 av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
238 st->codecpar->block_align = ff_sipr_subpk_size[flavor];
240 if(sub_packet_size <= 0){
241 av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
244 st->codecpar->block_align = ast->sub_packet_size;
246 if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length)) < 0)
250 case AV_CODEC_ID_AAC:
251 avio_rb16(pb); avio_r8(pb);
254 codecdata_length = avio_rb32(pb);
255 if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
256 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
259 if (codecdata_length >= 1) {
261 if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length - 1)) < 0)
266 switch (ast->deint_id) {
268 if (ast->coded_framesize > ast->audio_framesize ||
270 ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
271 return AVERROR_INVALIDDATA;
272 if (ast->coded_framesize * sub_packet_h != 2*ast->audio_framesize) {
273 avpriv_request_sample(s, "mismatching interleaver parameters");
274 return AVERROR_INVALIDDATA;
278 if (ast->sub_packet_size <= 0 ||
279 ast->sub_packet_size > ast->audio_framesize)
280 return AVERROR_INVALIDDATA;
281 if (ast->audio_framesize % ast->sub_packet_size)
282 return AVERROR_INVALIDDATA;
290 av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
291 return AVERROR_INVALIDDATA;
293 if (ast->deint_id == DEINT_ID_INT4 ||
294 ast->deint_id == DEINT_ID_GENR ||
295 ast->deint_id == DEINT_ID_SIPR) {
296 if (st->codecpar->block_align <= 0 ||
297 ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
298 ast->audio_framesize * sub_packet_h < st->codecpar->block_align)
299 return AVERROR_INVALIDDATA;
300 if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
301 return AVERROR(ENOMEM);
308 rm_read_metadata(s, pb, 0);
314 int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb,
315 AVStream *st, RMStream *rst,
316 unsigned int codec_data_size, const uint8_t *mime)
323 if (codec_data_size > INT_MAX)
324 return AVERROR_INVALIDDATA;
325 if (codec_data_size == 0)
328 avpriv_set_pts_info(st, 64, 1, 1000);
329 codec_pos = avio_tell(pb);
332 if (v == MKTAG(0xfd, 'a', 'r', '.')) {
334 if (rm_read_audio_stream_info(s, pb, st, rst, 0))
336 } else if (v == MKBETAG('L', 'S', 'D', ':')) {
337 avio_seek(pb, -4, SEEK_CUR);
338 if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size)) < 0)
341 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
342 st->codecpar->codec_tag = AV_RL32(st->codecpar->extradata);
343 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
344 st->codecpar->codec_tag);
345 } else if(mime && !strcmp(mime, "logical-fileinfo")){
346 int stream_count, rule_count, property_count, i;
347 ff_free_stream(s, st);
348 if (avio_rb16(pb) != 0) {
349 av_log(s, AV_LOG_WARNING, "Unsupported version\n");
352 stream_count = avio_rb16(pb);
353 avio_skip(pb, 6*stream_count);
354 rule_count = avio_rb16(pb);
355 avio_skip(pb, 2*rule_count);
356 property_count = avio_rb16(pb);
357 for(i=0; i<property_count; i++){
358 uint8_t name[128], val[128];
360 if (avio_rb16(pb) != 0) {
361 av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
362 goto skip; //FIXME skip just this one
364 get_str8(pb, name, sizeof(name));
365 switch(avio_rb32(pb)) {
366 case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
367 av_dict_set(&s->metadata, name, val, 0);
369 default: avio_skip(pb, avio_rb16(pb));
374 if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
376 av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
379 st->codecpar->codec_tag = avio_rl32(pb);
380 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
381 st->codecpar->codec_tag);
382 av_log(s, AV_LOG_TRACE, "%X %X\n", st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0'));
383 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
385 st->codecpar->width = avio_rb16(pb);
386 st->codecpar->height = avio_rb16(pb);
387 avio_skip(pb, 2); // looks like bits per sample
388 avio_skip(pb, 4); // always zero?
389 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
390 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
393 if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
397 av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
398 0x10000, fps, (1 << 30) - 1);
399 #if FF_API_R_FRAME_RATE
400 st->r_frame_rate = st->avg_frame_rate;
402 } else if (s->error_recognition & AV_EF_EXPLODE) {
403 av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
404 return AVERROR_INVALIDDATA;
409 /* skip codec info */
410 size = avio_tell(pb) - codec_pos;
411 if (codec_data_size >= size) {
412 avio_skip(pb, codec_data_size - size);
414 av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
420 /** this function assumes that the demuxer has already seeked to the start
421 * of the INDX chunk, and will bail out if not. */
422 static int rm_read_index(AVFormatContext *s)
424 AVIOContext *pb = s->pb;
425 unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
429 if (avio_rl32(pb) != MKTAG('I','N','D','X'))
431 size = avio_rb32(pb);
435 n_pkts = avio_rb32(pb);
436 str_id = avio_rb16(pb);
437 next_off = avio_rb32(pb);
438 for (n = 0; n < s->nb_streams; n++)
439 if (s->streams[n]->id == str_id) {
443 if (n == s->nb_streams) {
444 av_log(s, AV_LOG_ERROR,
445 "Invalid stream index %d for index at pos %"PRId64"\n",
446 str_id, avio_tell(pb));
448 } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
449 av_log(s, AV_LOG_ERROR,
450 "Nr. of packets in packet index for stream index %d "
451 "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
452 str_id, avio_size(pb), avio_tell(pb),
453 (avio_size(pb) - avio_tell(pb)) / 14);
457 for (n = 0; n < n_pkts; n++) {
461 avio_skip(pb, 4); /* packet no. */
463 av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
467 if (next_off && avio_tell(pb) < next_off &&
468 avio_seek(pb, next_off, SEEK_SET) < 0) {
469 av_log(s, AV_LOG_ERROR,
470 "Non-linear index detected, not supported\n");
478 static int rm_read_header_old(AVFormatContext *s)
480 RMDemuxContext *rm = s->priv_data;
484 st = avformat_new_stream(s, NULL);
487 st->priv_data = ff_rm_alloc_rmstream();
489 return AVERROR(ENOMEM);
490 return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
493 static int rm_read_multi(AVFormatContext *s, AVIOContext *pb,
494 AVStream *st, char *mime)
496 int number_of_streams = avio_rb16(pb);
500 for (i = 0; i<number_of_streams; i++)
502 number_of_mdpr = avio_rb16(pb);
503 if (number_of_mdpr != 1) {
504 avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
506 for (i = 0; i < number_of_mdpr; i++) {
509 st2 = avformat_new_stream(s, NULL);
511 ret = AVERROR(ENOMEM);
514 st2->id = st->id + (i<<16);
515 st2->codecpar->bit_rate = st->codecpar->bit_rate;
516 st2->start_time = st->start_time;
517 st2->duration = st->duration;
518 st2->codecpar->codec_type = AVMEDIA_TYPE_DATA;
519 st2->priv_data = ff_rm_alloc_rmstream();
521 return AVERROR(ENOMEM);
525 size2 = avio_rb32(pb);
526 ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
534 static int rm_read_header(AVFormatContext *s)
536 RMDemuxContext *rm = s->priv_data;
538 AVIOContext *pb = s->pb;
541 unsigned int start_time, duration;
542 unsigned int data_off = 0, indx_off = 0;
543 char buf[128], mime[128];
550 if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
551 /* very old .ra format */
552 return rm_read_header_old(s);
553 } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
557 tag_size = avio_rb32(pb);
558 avio_skip(pb, tag_size - 8);
564 tag_size = avio_rb32(pb);
566 av_log(s, AV_LOG_TRACE, "tag=%c%c%c%c (%08x) size=%d\n",
573 if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
576 case MKTAG('P', 'R', 'O', 'P'):
578 avio_rb32(pb); /* max bit rate */
579 avio_rb32(pb); /* avg bit rate */
580 avio_rb32(pb); /* max packet size */
581 avio_rb32(pb); /* avg packet size */
582 avio_rb32(pb); /* nb packets */
583 duration = avio_rb32(pb); /* duration */
584 s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
585 avio_rb32(pb); /* preroll */
586 indx_off = avio_rb32(pb); /* index offset */
587 data_off = avio_rb32(pb); /* data offset */
588 avio_rb16(pb); /* nb streams */
589 flags = avio_rb16(pb); /* flags */
591 case MKTAG('C', 'O', 'N', 'T'):
592 rm_read_metadata(s, pb, 1);
594 case MKTAG('M', 'D', 'P', 'R'):
595 st = avformat_new_stream(s, NULL);
597 ret = AVERROR(ENOMEM);
600 st->id = avio_rb16(pb);
601 avio_rb32(pb); /* max bit rate */
602 st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */
603 avio_rb32(pb); /* max packet size */
604 avio_rb32(pb); /* avg packet size */
605 start_time = avio_rb32(pb); /* start time */
606 avio_rb32(pb); /* preroll */
607 duration = avio_rb32(pb); /* duration */
608 st->start_time = start_time;
609 st->duration = duration;
611 s->duration = AV_NOPTS_VALUE;
612 get_str8(pb, buf, sizeof(buf)); /* desc */
613 get_str8(pb, mime, sizeof(mime)); /* mimetype */
614 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
615 st->priv_data = ff_rm_alloc_rmstream();
617 return AVERROR(ENOMEM);
619 size = avio_rb32(pb);
620 codec_pos = avio_tell(pb);
622 ffio_ensure_seekback(pb, 4);
624 if (v == MKBETAG('M', 'L', 'T', 'I')) {
625 ret = rm_read_multi(s, s->pb, st, mime);
628 avio_seek(pb, codec_pos + size, SEEK_SET);
631 if (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 && !(s->flags & AVFMT_FLAG_IGNIDX) &&
654 avio_seek(pb, indx_off, SEEK_SET) >= 0) {
656 avio_seek(pb, data_off + 18, SEEK_SET);
666 static int get_num(AVIOContext *pb, int *len)
678 return (n << 16) | n1;
682 /* multiple of 20 bytes for ra144 (ugly) */
683 #define RAW_PACKET_SIZE 1000
685 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
686 RMDemuxContext *rm = s->priv_data;
687 AVIOContext *pb = s->pb;
689 uint32_t state=0xFFFFFFFF;
691 while(!avio_feof(pb)){
694 *pos= avio_tell(pb) - 3;
695 if(rm->remaining_len > 0){
696 num= rm->current_stream;
698 len= rm->remaining_len;
699 *timestamp = AV_NOPTS_VALUE;
702 state= (state<<8) + avio_r8(pb);
704 if(state == MKBETAG('I', 'N', 'D', 'X')){
705 int n_pkts, expected_len;
708 n_pkts = avio_rb32(pb);
709 expected_len = 20 + n_pkts * 14;
711 /* some files don't add index entries to chunk size... */
713 else if (len != expected_len)
714 av_log(s, AV_LOG_WARNING,
715 "Index size %d (%d pkts) is wrong, should be %d.\n",
716 len, n_pkts, expected_len);
717 len -= 14; // we already read part of the index header
721 } else if (state == MKBETAG('D','A','T','A')) {
722 av_log(s, AV_LOG_WARNING,
723 "DATA tag in middle of chunk, file may be broken.\n");
726 if(state > (unsigned)0xFFFF || state <= 12)
732 *timestamp = avio_rb32(pb);
733 mlti_id = (avio_r8(pb)>>1)-1<<16;
734 mlti_id = FFMAX(mlti_id, 0);
735 *flags = avio_r8(pb); /* flags */
737 for(i=0;i<s->nb_streams;i++) {
739 if (mlti_id + num == st->id)
742 if (i == s->nb_streams) {
744 /* skip packet if unknown number */
746 rm->remaining_len = 0;
756 static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb,
757 RMDemuxContext *rm, RMStream *vst,
758 AVPacket *pkt, int len, int *pseq,
762 int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
766 hdr = avio_r8(pb); len--;
769 if(type != 3){ // not frame as a part of packet
770 seq = avio_r8(pb); len--;
772 if(type != 1){ // not whole frame
773 len2 = get_num(pb, &len);
774 pos = get_num(pb, &len);
775 pic_num = avio_r8(pb); len--;
778 av_log(s, AV_LOG_ERROR, "Insufficient data\n");
781 rm->remaining_len = len;
782 if(type&1){ // frame, not slice
783 if(type == 3){ // frame as a part of packet
787 if(rm->remaining_len < len) {
788 av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
791 rm->remaining_len -= len;
792 if(av_new_packet(pkt, len + 9) < 0)
795 AV_WL32(pkt->data + 1, 1);
796 AV_WL32(pkt->data + 5, 0);
797 if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
798 av_packet_unref(pkt);
799 av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
800 return ret < 0 ? ret : AVERROR(EIO);
804 //now we have to deal with single slice
807 if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
808 if (len2 > ffio_limit(pb, len2)) {
809 av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
810 return AVERROR_INVALIDDATA;
812 vst->slices = ((hdr & 0x3F) << 1) + 1;
813 vst->videobufsize = len2 + 8*vst->slices + 1;
814 av_packet_unref(&vst->pkt); //FIXME this should be output.
815 if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
816 return AVERROR(ENOMEM);
817 memset(vst->pkt.data, 0, vst->pkt.size);
818 vst->videobufpos = 8*vst->slices + 1;
820 vst->curpic_num = pic_num;
821 vst->pktpos = avio_tell(pb);
824 len = FFMIN(len, pos);
826 if(++vst->cur_slice > vst->slices) {
827 av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
831 return AVERROR(ENOMEM);
832 AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
833 AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
834 if(vst->videobufpos + len > vst->videobufsize) {
835 av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
838 if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
840 vst->videobufpos += len;
841 rm->remaining_len-= len;
843 if (type == 2 || vst->videobufpos == vst->videobufsize) {
844 vst->pkt.data[0] = vst->cur_slice-1;
849 if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
850 memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
851 vst->videobufpos - 1 - 8*vst->slices);
852 pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
853 pkt->pts = AV_NOPTS_VALUE;
854 pkt->pos = vst->pktpos;
863 rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
868 if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
870 for (j=0;j<pkt->size;j+=2) {
871 FFSWAP(int, ptr[0], ptr[1]);
877 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
878 int ret = avio_read(pb, dst, n);
880 if (ret >= 0) memset(dst + ret, 0, n - ret);
881 else memset(dst , 0, n);
882 av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
888 ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb,
889 AVStream *st, RMStream *ast, int len, AVPacket *pkt,
890 int *seq, int flags, int64_t timestamp)
892 RMDemuxContext *rm = s->priv_data;
895 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
896 rm->current_stream= st->id;
897 ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, ×tamp);
899 return ret < 0 ? ret : -1; //got partial frame or error
900 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
901 if ((ast->deint_id == DEINT_ID_GENR) ||
902 (ast->deint_id == DEINT_ID_INT4) ||
903 (ast->deint_id == DEINT_ID_SIPR)) {
905 int sps = ast->sub_packet_size;
906 int cfs = ast->coded_framesize;
907 int h = ast->sub_packet_h;
908 int y = ast->sub_packet_cnt;
909 int w = ast->audio_framesize;
912 y = ast->sub_packet_cnt = 0;
914 ast->audiotimestamp = timestamp;
916 switch (ast->deint_id) {
918 for (x = 0; x < h/2; x++)
919 readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
922 for (x = 0; x < w/sps; x++)
923 readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
926 readfull(s, pb, ast->pkt.data + y * w, w);
930 if (++(ast->sub_packet_cnt) < h)
932 if (ast->deint_id == DEINT_ID_SIPR)
933 ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
935 ast->sub_packet_cnt = 0;
936 rm->audio_stream_num = st->index;
937 rm->audio_pkt_cnt = h * w / st->codecpar->block_align;
938 } else if ((ast->deint_id == DEINT_ID_VBRF) ||
939 (ast->deint_id == DEINT_ID_VBRS)) {
941 rm->audio_stream_num = st->index;
942 ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
943 if (ast->sub_packet_cnt) {
944 for (x = 0; x < ast->sub_packet_cnt; x++)
945 ast->sub_packet_lengths[x] = avio_rb16(pb);
946 rm->audio_pkt_cnt = ast->sub_packet_cnt;
947 ast->audiotimestamp = timestamp;
951 if ((ret = av_get_packet(pb, pkt, len)) < 0)
953 rm_ac3_swap_bytes(st, pkt);
956 if ((ret = av_get_packet(pb, pkt, len)) < 0)
960 pkt->stream_index = st->index;
963 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
964 if(st->codecpar->codec_id == AV_CODEC_ID_RV20){
965 int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1);
966 av_log(s, AV_LOG_DEBUG, "%d %"PRId64" %d\n", *timestamp, *timestamp*512LL/25, seq);
968 seq |= (timestamp&~0x3FFF);
969 if(seq - timestamp > 0x2000) seq -= 0x4000;
970 if(seq - timestamp < -0x2000) seq += 0x4000;
975 pkt->pts = timestamp;
977 pkt->flags |= AV_PKT_FLAG_KEY;
979 return st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
983 ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb,
984 AVStream *st, RMStream *ast, AVPacket *pkt)
986 RMDemuxContext *rm = s->priv_data;
988 av_assert0 (rm->audio_pkt_cnt > 0);
990 if (ast->deint_id == DEINT_ID_VBRF ||
991 ast->deint_id == DEINT_ID_VBRS) {
992 int ret = av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
996 int ret = av_new_packet(pkt, st->codecpar->block_align);
999 memcpy(pkt->data, ast->pkt.data + st->codecpar->block_align * //FIXME avoid this
1000 (ast->sub_packet_h * ast->audio_framesize / st->codecpar->block_align - rm->audio_pkt_cnt),
1001 st->codecpar->block_align);
1003 rm->audio_pkt_cnt--;
1004 if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
1005 ast->audiotimestamp = AV_NOPTS_VALUE;
1006 pkt->flags = AV_PKT_FLAG_KEY;
1009 pkt->stream_index = st->index;
1011 return rm->audio_pkt_cnt;
1014 static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
1016 RMDemuxContext *rm = s->priv_data;
1017 AVStream *st = NULL; // init to silence compiler warning
1018 int i, len, res, seq = 1;
1019 int64_t timestamp, pos;
1023 if (rm->audio_pkt_cnt) {
1024 // If there are queued audio packet return them first
1025 st = s->streams[rm->audio_stream_num];
1026 res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
1031 if (rm->old_format) {
1035 ast = st->priv_data;
1036 timestamp = AV_NOPTS_VALUE;
1037 len = !ast->audio_framesize ? RAW_PACKET_SIZE :
1038 ast->coded_framesize * ast->sub_packet_h / 2;
1039 flags = (seq++ == 1) ? 2 : 0;
1040 pos = avio_tell(s->pb);
1042 len = rm_sync(s, ×tamp, &flags, &i, &pos);
1047 if (avio_feof(s->pb))
1050 return AVERROR(EIO);
1052 res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
1053 &seq, flags, timestamp);
1056 if((flags&2) && (seq&0x7F) == 1)
1057 av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1062 if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1063 || st->discard >= AVDISCARD_ALL){
1064 av_packet_unref(pkt);
1072 static int rm_read_close(AVFormatContext *s)
1076 for (i=0;i<s->nb_streams;i++)
1077 ff_rm_free_rmstream(s->streams[i]->priv_data);
1082 static int rm_probe(AVProbeData *p)
1084 /* check file header */
1085 if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1086 p->buf[2] == 'M' && p->buf[3] == 'F' &&
1087 p->buf[4] == 0 && p->buf[5] == 0) ||
1088 (p->buf[0] == '.' && p->buf[1] == 'r' &&
1089 p->buf[2] == 'a' && p->buf[3] == 0xfd))
1090 return AVPROBE_SCORE_MAX;
1095 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1096 int64_t *ppos, int64_t pos_limit)
1098 RMDemuxContext *rm = s->priv_data;
1100 int stream_index2, flags, len, h;
1105 return AV_NOPTS_VALUE;
1107 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1108 return AV_NOPTS_VALUE;
1110 rm->remaining_len=0;
1115 len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1117 return AV_NOPTS_VALUE;
1119 st = s->streams[stream_index2];
1120 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1121 h= avio_r8(s->pb); len--;
1123 seq = avio_r8(s->pb); len--;
1127 if((flags&2) && (seq&0x7F) == 1){
1128 av_log(s, AV_LOG_TRACE, "%d %d-%d %"PRId64" %d\n",
1129 flags, stream_index2, stream_index, dts, seq);
1130 av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1131 if(stream_index2 == stream_index)
1135 avio_skip(s->pb, len);
1141 static int rm_read_seek(AVFormatContext *s, int stream_index,
1142 int64_t pts, int flags)
1144 RMDemuxContext *rm = s->priv_data;
1146 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1148 rm->audio_pkt_cnt = 0;
1153 AVInputFormat ff_rm_demuxer = {
1155 .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1156 .priv_data_size = sizeof(RMDemuxContext),
1157 .read_probe = rm_probe,
1158 .read_header = rm_read_header,
1159 .read_packet = rm_read_packet,
1160 .read_close = rm_read_close,
1161 .read_timestamp = rm_read_dts,
1162 .read_seek = rm_read_seek,
1165 AVInputFormat ff_rdt_demuxer = {
1167 .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1168 .priv_data_size = sizeof(RMDemuxContext),
1169 .read_close = rm_read_close,
1170 .flags = AVFMT_NOFILE,
1173 static int ivr_probe(AVProbeData *p)
1175 if (memcmp(p->buf, ".R1M\x0\x1\x1", 7) &&
1176 memcmp(p->buf, ".REC", 4))
1179 return AVPROBE_SCORE_MAX;
1182 static int ivr_read_header(AVFormatContext *s)
1184 unsigned tag, type, len, tlen, value;
1185 int i, j, n, count, nb_streams = 0, ret;
1186 uint8_t key[256], val[256];
1187 AVIOContext *pb = s->pb;
1189 int64_t pos, offset, temp;
1191 pos = avio_tell(pb);
1192 tag = avio_rl32(pb);
1193 if (tag == MKTAG('.','R','1','M')) {
1194 if (avio_rb16(pb) != 1)
1195 return AVERROR_INVALIDDATA;
1196 if (avio_r8(pb) != 1)
1197 return AVERROR_INVALIDDATA;
1198 len = avio_rb32(pb);
1201 temp = avio_rb64(pb);
1202 while (!avio_feof(pb) && temp) {
1204 temp = avio_rb64(pb);
1206 avio_skip(pb, offset - avio_tell(pb));
1207 if (avio_r8(pb) != 1)
1208 return AVERROR_INVALIDDATA;
1209 len = avio_rb32(pb);
1211 if (avio_r8(pb) != 2)
1212 return AVERROR_INVALIDDATA;
1214 pos = avio_tell(pb);
1215 tag = avio_rl32(pb);
1218 if (tag != MKTAG('.','R','E','C'))
1219 return AVERROR_INVALIDDATA;
1221 if (avio_r8(pb) != 0)
1222 return AVERROR_INVALIDDATA;
1223 count = avio_rb32(pb);
1224 for (i = 0; i < count; i++) {
1226 return AVERROR_INVALIDDATA;
1229 tlen = avio_rb32(pb);
1230 avio_get_str(pb, tlen, key, sizeof(key));
1231 len = avio_rb32(pb);
1233 avio_get_str(pb, len, val, sizeof(val));
1234 av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1235 } else if (type == 4) {
1236 av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1237 for (j = 0; j < len; j++)
1238 av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1239 av_log(s, AV_LOG_DEBUG, "'\n");
1240 } else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) {
1241 nb_streams = value = avio_rb32(pb);
1242 } else if (len == 4 && type == 3) {
1243 value = avio_rb32(pb);
1244 av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1246 av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1251 for (n = 0; n < nb_streams; n++) {
1252 st = avformat_new_stream(s, NULL);
1254 return AVERROR(ENOMEM);
1255 st->priv_data = ff_rm_alloc_rmstream();
1257 return AVERROR(ENOMEM);
1259 if (avio_r8(pb) != 1)
1260 return AVERROR_INVALIDDATA;
1262 count = avio_rb32(pb);
1263 for (i = 0; i < count; i++) {
1265 return AVERROR_INVALIDDATA;
1268 tlen = avio_rb32(pb);
1269 avio_get_str(pb, tlen, key, sizeof(key));
1270 len = avio_rb32(pb);
1272 avio_get_str(pb, len, val, sizeof(val));
1273 av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1274 } else if (type == 4 && !strncmp(key, "OpaqueData", tlen)) {
1275 ret = ffio_ensure_seekback(pb, 4);
1278 if (avio_rb32(pb) == MKBETAG('M', 'L', 'T', 'I')) {
1279 ret = rm_read_multi(s, pb, st, NULL);
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",