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 if (ff_get_extradata(s, par, pb, size) < 0)
91 return AVERROR(ENOMEM);
95 static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
100 for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
101 int len = wide ? avio_rb16(pb) : avio_r8(pb);
103 get_strl(pb, buf, sizeof(buf), len);
104 av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
109 RMStream *ff_rm_alloc_rmstream (void)
111 RMStream *rms = av_mallocz(sizeof(RMStream));
114 rms->curpic_num = -1;
118 void ff_rm_free_rmstream (RMStream *rms)
120 av_packet_unref(&rms->pkt);
123 static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
124 AVStream *st, RMStream *ast, int read_all)
131 version = avio_rb16(pb); /* version */
133 unsigned bytes_per_minute;
134 int header_size = avio_rb16(pb);
135 int64_t startpos = avio_tell(pb);
137 bytes_per_minute = avio_rb16(pb);
139 rm_read_metadata(s, pb, 0);
140 if ((startpos + header_size) >= avio_tell(pb) + 2) {
141 // fourcc (should always be "lpcJ")
143 get_str8(pb, buf, sizeof(buf));
145 // Skip extra header crap (this should never happen)
146 if ((startpos + header_size) > avio_tell(pb))
147 avio_skip(pb, header_size + startpos - avio_tell(pb));
148 if (bytes_per_minute)
149 st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
150 st->codecpar->sample_rate = 8000;
151 st->codecpar->channels = 1;
152 st->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
153 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
154 st->codecpar->codec_id = AV_CODEC_ID_RA_144;
155 ast->deint_id = DEINT_ID_INT0;
157 int flavor, sub_packet_h, coded_framesize, sub_packet_size;
158 int codecdata_length;
159 unsigned bytes_per_minute;
160 /* old version (4) */
161 avio_skip(pb, 2); /* unused */
162 avio_rb32(pb); /* .ra4 */
163 avio_rb32(pb); /* data size */
164 avio_rb16(pb); /* version2 */
165 avio_rb32(pb); /* header size */
166 flavor= avio_rb16(pb); /* add codec info / flavor */
167 ast->coded_framesize = coded_framesize = avio_rb32(pb); /* coded frame size */
168 avio_rb32(pb); /* ??? */
169 bytes_per_minute = avio_rb32(pb);
171 if (bytes_per_minute)
172 st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
174 avio_rb32(pb); /* ??? */
175 ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
176 st->codecpar->block_align= avio_rb16(pb); /* frame size */
177 ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
178 avio_rb16(pb); /* ??? */
180 avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
182 st->codecpar->sample_rate = avio_rb16(pb);
184 st->codecpar->channels = avio_rb16(pb);
186 ast->deint_id = avio_rl32(pb);
187 avio_read(pb, buf, 4);
191 get_str8(pb, buf, sizeof(buf)); /* desc */
192 ast->deint_id = AV_RL32(buf);
193 get_str8(pb, buf, sizeof(buf)); /* desc */
195 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
196 st->codecpar->codec_tag = AV_RL32(buf);
197 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
198 st->codecpar->codec_tag);
200 switch (st->codecpar->codec_id) {
201 case AV_CODEC_ID_AC3:
202 st->need_parsing = AVSTREAM_PARSE_FULL;
204 case AV_CODEC_ID_RA_288:
205 st->codecpar->extradata_size= 0;
206 av_freep(&st->codecpar->extradata);
207 ast->audio_framesize = st->codecpar->block_align;
208 st->codecpar->block_align = coded_framesize;
210 case AV_CODEC_ID_COOK:
211 st->need_parsing = AVSTREAM_PARSE_HEADERS;
212 case AV_CODEC_ID_ATRAC3:
213 case AV_CODEC_ID_SIPR:
215 codecdata_length = 0;
217 avio_rb16(pb); avio_r8(pb);
220 codecdata_length = avio_rb32(pb);
221 if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
222 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
227 ast->audio_framesize = st->codecpar->block_align;
228 if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
230 av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
234 st->codecpar->block_align = ff_sipr_subpk_size[flavor];
235 st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
237 if(sub_packet_size <= 0){
238 av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
241 st->codecpar->block_align = ast->sub_packet_size;
243 if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length)) < 0)
247 case AV_CODEC_ID_AAC:
248 avio_rb16(pb); avio_r8(pb);
251 codecdata_length = avio_rb32(pb);
252 if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
253 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
256 if (codecdata_length >= 1) {
258 if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length - 1)) < 0)
263 switch (ast->deint_id) {
265 if (ast->coded_framesize > ast->audio_framesize ||
267 ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
268 return AVERROR_INVALIDDATA;
269 if (ast->coded_framesize * sub_packet_h != 2*ast->audio_framesize) {
270 avpriv_request_sample(s, "mismatching interleaver parameters");
271 return AVERROR_INVALIDDATA;
275 if (ast->sub_packet_size <= 0 ||
276 ast->sub_packet_size > ast->audio_framesize)
277 return AVERROR_INVALIDDATA;
278 if (ast->audio_framesize % ast->sub_packet_size)
279 return AVERROR_INVALIDDATA;
287 av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
288 return AVERROR_INVALIDDATA;
290 if (ast->deint_id == DEINT_ID_INT4 ||
291 ast->deint_id == DEINT_ID_GENR ||
292 ast->deint_id == DEINT_ID_SIPR) {
293 if (st->codecpar->block_align <= 0 ||
294 ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
295 ast->audio_framesize * sub_packet_h < st->codecpar->block_align)
296 return AVERROR_INVALIDDATA;
297 if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
298 return AVERROR(ENOMEM);
305 rm_read_metadata(s, pb, 0);
311 int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb,
312 AVStream *st, RMStream *rst,
313 unsigned int codec_data_size, const uint8_t *mime)
320 if (codec_data_size > INT_MAX)
321 return AVERROR_INVALIDDATA;
322 if (codec_data_size == 0)
325 avpriv_set_pts_info(st, 64, 1, 1000);
326 codec_pos = avio_tell(pb);
329 if (v == MKTAG(0xfd, 'a', 'r', '.')) {
331 if (rm_read_audio_stream_info(s, pb, st, rst, 0))
333 } else if (v == MKBETAG('L', 'S', 'D', ':')) {
334 avio_seek(pb, -4, SEEK_CUR);
335 if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size)) < 0)
338 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
339 st->codecpar->codec_tag = AV_RL32(st->codecpar->extradata);
340 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
341 st->codecpar->codec_tag);
342 } else if(mime && !strcmp(mime, "logical-fileinfo")){
343 int stream_count, rule_count, property_count, i;
344 ff_free_stream(s, st);
345 if (avio_rb16(pb) != 0) {
346 av_log(s, AV_LOG_WARNING, "Unsupported version\n");
349 stream_count = avio_rb16(pb);
350 avio_skip(pb, 6*stream_count);
351 rule_count = avio_rb16(pb);
352 avio_skip(pb, 2*rule_count);
353 property_count = avio_rb16(pb);
354 for(i=0; i<property_count; i++){
355 uint8_t name[128], val[128];
357 if (avio_rb16(pb) != 0) {
358 av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
359 goto skip; //FIXME skip just this one
361 get_str8(pb, name, sizeof(name));
362 switch(avio_rb32(pb)) {
363 case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
364 av_dict_set(&s->metadata, name, val, 0);
366 default: avio_skip(pb, avio_rb16(pb));
371 if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
373 av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
376 st->codecpar->codec_tag = avio_rl32(pb);
377 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
378 st->codecpar->codec_tag);
379 av_log(s, AV_LOG_TRACE, "%"PRIX32" %X\n",
380 st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0'));
381 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
383 st->codecpar->width = avio_rb16(pb);
384 st->codecpar->height = avio_rb16(pb);
385 avio_skip(pb, 2); // looks like bits per sample
386 avio_skip(pb, 4); // always zero?
387 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
388 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
391 if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
395 av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
396 0x10000, fps, (1 << 30) - 1);
397 #if FF_API_R_FRAME_RATE
398 st->r_frame_rate = st->avg_frame_rate;
400 } else if (s->error_recognition & AV_EF_EXPLODE) {
401 av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
402 return AVERROR_INVALIDDATA;
407 /* skip codec info */
408 size = avio_tell(pb) - codec_pos;
409 if (codec_data_size >= size) {
410 avio_skip(pb, codec_data_size - size);
412 av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
418 /** this function assumes that the demuxer has already seeked to the start
419 * of the INDX chunk, and will bail out if not. */
420 static int rm_read_index(AVFormatContext *s)
422 AVIOContext *pb = s->pb;
423 unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
427 if (avio_rl32(pb) != MKTAG('I','N','D','X'))
429 size = avio_rb32(pb);
433 n_pkts = avio_rb32(pb);
434 str_id = avio_rb16(pb);
435 next_off = avio_rb32(pb);
436 for (n = 0; n < s->nb_streams; n++)
437 if (s->streams[n]->id == str_id) {
441 if (n == s->nb_streams) {
442 av_log(s, AV_LOG_ERROR,
443 "Invalid stream index %d for index at pos %"PRId64"\n",
444 str_id, avio_tell(pb));
446 } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
447 av_log(s, AV_LOG_ERROR,
448 "Nr. of packets in packet index for stream index %d "
449 "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
450 str_id, avio_size(pb), avio_tell(pb),
451 (avio_size(pb) - avio_tell(pb)) / 14);
455 for (n = 0; n < n_pkts; n++) {
459 avio_skip(pb, 4); /* packet no. */
461 av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
465 if (next_off && avio_tell(pb) < next_off &&
466 avio_seek(pb, next_off, SEEK_SET) < 0) {
467 av_log(s, AV_LOG_ERROR,
468 "Non-linear index detected, not supported\n");
476 static int rm_read_header_old(AVFormatContext *s)
478 RMDemuxContext *rm = s->priv_data;
482 st = avformat_new_stream(s, NULL);
485 st->priv_data = ff_rm_alloc_rmstream();
487 return AVERROR(ENOMEM);
488 return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
491 static int rm_read_multi(AVFormatContext *s, AVIOContext *pb,
492 AVStream *st, char *mime)
494 int number_of_streams = avio_rb16(pb);
498 for (i = 0; i<number_of_streams; i++)
500 number_of_mdpr = avio_rb16(pb);
501 if (number_of_mdpr != 1) {
502 avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
504 for (i = 0; i < number_of_mdpr; i++) {
507 st2 = avformat_new_stream(s, NULL);
509 ret = AVERROR(ENOMEM);
512 st2->id = st->id + (i<<16);
513 st2->codecpar->bit_rate = st->codecpar->bit_rate;
514 st2->start_time = st->start_time;
515 st2->duration = st->duration;
516 st2->codecpar->codec_type = AVMEDIA_TYPE_DATA;
517 st2->priv_data = ff_rm_alloc_rmstream();
519 return AVERROR(ENOMEM);
523 size2 = avio_rb32(pb);
524 ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
532 static int rm_read_header(AVFormatContext *s)
534 RMDemuxContext *rm = s->priv_data;
536 AVIOContext *pb = s->pb;
539 unsigned int start_time, duration;
540 unsigned int data_off = 0, indx_off = 0;
541 char buf[128], mime[128];
548 if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
549 /* very old .ra format */
550 return rm_read_header_old(s);
551 } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
555 tag_size = avio_rb32(pb);
556 avio_skip(pb, tag_size - 8);
562 tag_size = avio_rb32(pb);
564 av_log(s, AV_LOG_TRACE, "tag=%s size=%d\n",
565 av_fourcc2str(tag), tag_size);
566 if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
569 case MKTAG('P', 'R', 'O', 'P'):
571 avio_rb32(pb); /* max bit rate */
572 avio_rb32(pb); /* avg bit rate */
573 avio_rb32(pb); /* max packet size */
574 avio_rb32(pb); /* avg packet size */
575 avio_rb32(pb); /* nb packets */
576 duration = avio_rb32(pb); /* duration */
577 s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
578 avio_rb32(pb); /* preroll */
579 indx_off = avio_rb32(pb); /* index offset */
580 data_off = avio_rb32(pb); /* data offset */
581 avio_rb16(pb); /* nb streams */
582 flags = avio_rb16(pb); /* flags */
584 case MKTAG('C', 'O', 'N', 'T'):
585 rm_read_metadata(s, pb, 1);
587 case MKTAG('M', 'D', 'P', 'R'):
588 st = avformat_new_stream(s, NULL);
590 ret = AVERROR(ENOMEM);
593 st->id = avio_rb16(pb);
594 avio_rb32(pb); /* max bit rate */
595 st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */
596 avio_rb32(pb); /* max packet size */
597 avio_rb32(pb); /* avg packet size */
598 start_time = avio_rb32(pb); /* start time */
599 avio_rb32(pb); /* preroll */
600 duration = avio_rb32(pb); /* duration */
601 st->start_time = start_time;
602 st->duration = duration;
604 s->duration = AV_NOPTS_VALUE;
605 get_str8(pb, buf, sizeof(buf)); /* desc */
606 get_str8(pb, mime, sizeof(mime)); /* mimetype */
607 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
608 st->priv_data = ff_rm_alloc_rmstream();
610 return AVERROR(ENOMEM);
612 size = avio_rb32(pb);
613 codec_pos = avio_tell(pb);
615 ffio_ensure_seekback(pb, 4);
617 if (v == MKBETAG('M', 'L', 'T', 'I')) {
618 ret = rm_read_multi(s, s->pb, st, mime);
621 avio_seek(pb, codec_pos + size, SEEK_SET);
624 if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
630 case MKTAG('D', 'A', 'T', 'A'):
633 /* unknown tag: skip it */
634 avio_skip(pb, tag_size - 10);
639 rm->nb_packets = avio_rb32(pb); /* number of packets */
640 if (!rm->nb_packets && (flags & 4))
641 rm->nb_packets = 3600 * 25;
642 avio_rb32(pb); /* next data header */
645 data_off = avio_tell(pb) - 18;
646 if (indx_off && (pb->seekable & AVIO_SEEKABLE_NORMAL) &&
647 !(s->flags & AVFMT_FLAG_IGNIDX) &&
648 avio_seek(pb, indx_off, SEEK_SET) >= 0) {
650 avio_seek(pb, data_off + 18, SEEK_SET);
660 static int get_num(AVIOContext *pb, int *len)
672 return (n << 16) | n1;
676 /* multiple of 20 bytes for ra144 (ugly) */
677 #define RAW_PACKET_SIZE 1000
679 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
680 RMDemuxContext *rm = s->priv_data;
681 AVIOContext *pb = s->pb;
683 uint32_t state=0xFFFFFFFF;
685 while(!avio_feof(pb)){
688 *pos= avio_tell(pb) - 3;
689 if(rm->remaining_len > 0){
690 num= rm->current_stream;
692 len= rm->remaining_len;
693 *timestamp = AV_NOPTS_VALUE;
696 state= (state<<8) + avio_r8(pb);
698 if(state == MKBETAG('I', 'N', 'D', 'X')){
699 int n_pkts, expected_len;
702 n_pkts = avio_rb32(pb);
703 expected_len = 20 + n_pkts * 14;
705 /* some files don't add index entries to chunk size... */
707 else if (len != expected_len)
708 av_log(s, AV_LOG_WARNING,
709 "Index size %d (%d pkts) is wrong, should be %d.\n",
710 len, n_pkts, expected_len);
711 len -= 14; // we already read part of the index header
715 } else if (state == MKBETAG('D','A','T','A')) {
716 av_log(s, AV_LOG_WARNING,
717 "DATA tag in middle of chunk, file may be broken.\n");
720 if(state > (unsigned)0xFFFF || state <= 12)
726 *timestamp = avio_rb32(pb);
727 mlti_id = (avio_r8(pb)>>1)-1<<16;
728 mlti_id = FFMAX(mlti_id, 0);
729 *flags = avio_r8(pb); /* flags */
731 for(i=0;i<s->nb_streams;i++) {
733 if (mlti_id + num == st->id)
736 if (i == s->nb_streams) {
738 /* skip packet if unknown number */
740 rm->remaining_len = 0;
750 static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb,
751 RMDemuxContext *rm, RMStream *vst,
752 AVPacket *pkt, int len, int *pseq,
756 int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
760 hdr = avio_r8(pb); len--;
763 if(type != 3){ // not frame as a part of packet
764 seq = avio_r8(pb); len--;
766 if(type != 1){ // not whole frame
767 len2 = get_num(pb, &len);
768 pos = get_num(pb, &len);
769 pic_num = avio_r8(pb); len--;
772 av_log(s, AV_LOG_ERROR, "Insufficient data\n");
775 rm->remaining_len = len;
776 if(type&1){ // frame, not slice
777 if(type == 3){ // frame as a part of packet
781 if(rm->remaining_len < len) {
782 av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
785 rm->remaining_len -= len;
786 if(av_new_packet(pkt, len + 9) < 0)
789 AV_WL32(pkt->data + 1, 1);
790 AV_WL32(pkt->data + 5, 0);
791 if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
792 av_packet_unref(pkt);
793 av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
794 return ret < 0 ? ret : AVERROR(EIO);
798 //now we have to deal with single slice
801 if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
802 if (len2 > ffio_limit(pb, len2)) {
803 av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
804 return AVERROR_INVALIDDATA;
806 vst->slices = ((hdr & 0x3F) << 1) + 1;
807 vst->videobufsize = len2 + 8*vst->slices + 1;
808 av_packet_unref(&vst->pkt); //FIXME this should be output.
809 if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
810 return AVERROR(ENOMEM);
811 memset(vst->pkt.data, 0, vst->pkt.size);
812 vst->videobufpos = 8*vst->slices + 1;
814 vst->curpic_num = pic_num;
815 vst->pktpos = avio_tell(pb);
818 len = FFMIN(len, pos);
820 if(++vst->cur_slice > vst->slices) {
821 av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
825 return AVERROR(ENOMEM);
826 AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
827 AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
828 if(vst->videobufpos + len > vst->videobufsize) {
829 av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
832 if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
834 vst->videobufpos += len;
835 rm->remaining_len-= len;
837 if (type == 2 || vst->videobufpos == vst->videobufsize) {
838 vst->pkt.data[0] = vst->cur_slice-1;
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(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(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, 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);
1194 avio_skip(pb, offset - avio_tell(pb));
1195 if (avio_r8(pb) != 1)
1196 return AVERROR_INVALIDDATA;
1197 len = avio_rb32(pb);
1199 if (avio_r8(pb) != 2)
1200 return AVERROR_INVALIDDATA;
1202 pos = avio_tell(pb);
1203 tag = avio_rl32(pb);
1206 if (tag != MKTAG('.','R','E','C'))
1207 return AVERROR_INVALIDDATA;
1209 if (avio_r8(pb) != 0)
1210 return AVERROR_INVALIDDATA;
1211 count = avio_rb32(pb);
1212 for (i = 0; i < count; i++) {
1214 return AVERROR_INVALIDDATA;
1217 tlen = avio_rb32(pb);
1218 avio_get_str(pb, tlen, key, sizeof(key));
1219 len = avio_rb32(pb);
1221 avio_get_str(pb, len, val, sizeof(val));
1222 av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1223 } else if (type == 4) {
1224 av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1225 for (j = 0; j < len; j++) {
1227 return AVERROR_INVALIDDATA;
1228 av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1230 av_log(s, AV_LOG_DEBUG, "'\n");
1231 } else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) {
1232 nb_streams = value = avio_rb32(pb);
1233 } else if (len == 4 && type == 3) {
1234 value = avio_rb32(pb);
1235 av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1237 av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1242 for (n = 0; n < nb_streams; n++) {
1243 st = avformat_new_stream(s, NULL);
1245 return AVERROR(ENOMEM);
1246 st->priv_data = ff_rm_alloc_rmstream();
1248 return AVERROR(ENOMEM);
1250 if (avio_r8(pb) != 1)
1251 return AVERROR_INVALIDDATA;
1253 count = avio_rb32(pb);
1254 for (i = 0; i < count; i++) {
1256 return AVERROR_INVALIDDATA;
1259 tlen = avio_rb32(pb);
1260 avio_get_str(pb, tlen, key, sizeof(key));
1261 len = avio_rb32(pb);
1263 avio_get_str(pb, len, val, sizeof(val));
1264 av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1265 } else if (type == 4 && !strncmp(key, "OpaqueData", tlen)) {
1266 ret = ffio_ensure_seekback(pb, 4);
1269 if (avio_rb32(pb) == MKBETAG('M', 'L', 'T', 'I')) {
1270 ret = rm_read_multi(s, pb, st, NULL);
1273 return AVERROR_INVALIDDATA;
1274 avio_seek(pb, -4, SEEK_CUR);
1275 ret = ff_rm_read_mdpr_codecdata(s, pb, st, st->priv_data, len, NULL);
1280 } else if (type == 4) {
1283 av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1284 for (j = 0; j < len; j++)
1285 av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1286 av_log(s, AV_LOG_DEBUG, "'\n");
1287 } else if (len == 4 && type == 3 && !strncmp(key, "Duration", tlen)) {
1288 st->duration = avio_rb32(pb);
1289 } else if (len == 4 && type == 3) {
1290 value = avio_rb32(pb);
1291 av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1293 av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1299 if (avio_r8(pb) != 6)
1300 return AVERROR_INVALIDDATA;
1302 avio_skip(pb, avio_rb64(pb) + pos - avio_tell(s->pb));
1303 if (avio_r8(pb) != 8)
1304 return AVERROR_INVALIDDATA;
1310 static int ivr_read_packet(AVFormatContext *s, AVPacket *pkt)
1312 RMDemuxContext *rm = s->priv_data;
1313 int ret = AVERROR_EOF, opcode;
1314 AVIOContext *pb = s->pb;
1315 unsigned size, index;
1318 if (avio_feof(pb) || rm->data_end)
1321 pos = avio_tell(pb);
1324 if (rm->audio_pkt_cnt) {
1325 // If there are queued audio packet return them first
1328 st = s->streams[rm->audio_stream_num];
1329 ret = ff_rm_retrieve_cache(s, pb, st, st->priv_data, pkt);
1334 if (rm->remaining_len) {
1335 avio_skip(pb, rm->remaining_len);
1336 rm->remaining_len = 0;
1342 opcode = avio_r8(pb);
1347 pts = avio_rb32(pb);
1348 index = avio_rb16(pb);
1349 if (index >= s->nb_streams)
1350 return AVERROR_INVALIDDATA;
1353 size = avio_rb32(pb);
1356 if (size < 1 || size > INT_MAX/4) {
1357 av_log(s, AV_LOG_ERROR, "size %u is invalid\n", size);
1358 return AVERROR_INVALIDDATA;
1361 st = s->streams[index];
1362 ret = ff_rm_parse_packet(s, pb, st, st->priv_data, size, pkt,
1372 pkt->stream_index = index;
1373 } else if (opcode == 7) {
1374 pos = avio_rb64(pb);
1380 av_log(s, AV_LOG_ERROR, "Unsupported opcode=%d at %"PRIX64"\n", opcode, avio_tell(pb) - 1);
1381 return AVERROR(EIO);
1391 AVInputFormat ff_ivr_demuxer = {
1393 .long_name = NULL_IF_CONFIG_SMALL("IVR (Internet Video Recording)"),
1394 .priv_data_size = sizeof(RMDemuxContext),
1395 .read_probe = ivr_probe,
1396 .read_header = ivr_read_header,
1397 .read_packet = ivr_read_packet,
1398 .read_close = rm_read_close,
1399 .extensions = "ivr",