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)
118 av_packet_unref(&rms->pkt);
121 static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
122 AVStream *st, RMStream *ast, int read_all)
129 version = avio_rb16(pb); /* version */
131 unsigned bytes_per_minute;
132 int header_size = avio_rb16(pb);
133 int64_t startpos = avio_tell(pb);
135 bytes_per_minute = avio_rb16(pb);
137 rm_read_metadata(s, pb, 0);
138 if ((startpos + header_size) >= avio_tell(pb) + 2) {
139 // fourcc (should always be "lpcJ")
141 get_str8(pb, buf, sizeof(buf));
143 // Skip extra header crap (this should never happen)
144 if ((startpos + header_size) > avio_tell(pb))
145 avio_skip(pb, header_size + startpos - avio_tell(pb));
146 if (bytes_per_minute)
147 st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
148 st->codecpar->sample_rate = 8000;
149 st->codecpar->channels = 1;
150 st->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
151 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
152 st->codecpar->codec_id = AV_CODEC_ID_RA_144;
153 ast->deint_id = DEINT_ID_INT0;
155 int flavor, sub_packet_h, coded_framesize, sub_packet_size;
156 int codecdata_length;
157 unsigned bytes_per_minute;
158 /* old version (4) */
159 avio_skip(pb, 2); /* unused */
160 avio_rb32(pb); /* .ra4 */
161 avio_rb32(pb); /* data size */
162 avio_rb16(pb); /* version2 */
163 avio_rb32(pb); /* header size */
164 flavor= avio_rb16(pb); /* add codec info / flavor */
165 ast->coded_framesize = coded_framesize = avio_rb32(pb); /* coded frame size */
166 avio_rb32(pb); /* ??? */
167 bytes_per_minute = avio_rb32(pb);
169 if (bytes_per_minute)
170 st->codecpar->bit_rate = 8LL * bytes_per_minute / 60;
172 avio_rb32(pb); /* ??? */
173 ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
174 st->codecpar->block_align= avio_rb16(pb); /* frame size */
175 ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
176 avio_rb16(pb); /* ??? */
178 avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
180 st->codecpar->sample_rate = avio_rb16(pb);
182 st->codecpar->channels = avio_rb16(pb);
184 ast->deint_id = avio_rl32(pb);
185 avio_read(pb, buf, 4);
189 get_str8(pb, buf, sizeof(buf)); /* desc */
190 ast->deint_id = AV_RL32(buf);
191 get_str8(pb, buf, sizeof(buf)); /* desc */
193 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
194 st->codecpar->codec_tag = AV_RL32(buf);
195 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
196 st->codecpar->codec_tag);
198 switch (st->codecpar->codec_id) {
199 case AV_CODEC_ID_AC3:
200 st->need_parsing = AVSTREAM_PARSE_FULL;
202 case AV_CODEC_ID_RA_288:
203 st->codecpar->extradata_size= 0;
204 av_freep(&st->codecpar->extradata);
205 ast->audio_framesize = st->codecpar->block_align;
206 st->codecpar->block_align = coded_framesize;
208 case AV_CODEC_ID_COOK:
209 st->need_parsing = AVSTREAM_PARSE_HEADERS;
210 case AV_CODEC_ID_ATRAC3:
211 case AV_CODEC_ID_SIPR:
213 codecdata_length = 0;
215 avio_rb16(pb); avio_r8(pb);
218 codecdata_length = avio_rb32(pb);
219 if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
220 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
225 ast->audio_framesize = st->codecpar->block_align;
226 if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
228 av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
232 st->codecpar->block_align = ff_sipr_subpk_size[flavor];
233 st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
235 if(sub_packet_size <= 0){
236 av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
239 st->codecpar->block_align = ast->sub_packet_size;
241 if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length)) < 0)
245 case AV_CODEC_ID_AAC:
246 avio_rb16(pb); avio_r8(pb);
249 codecdata_length = avio_rb32(pb);
250 if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
251 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
254 if (codecdata_length >= 1) {
256 if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length - 1)) < 0)
261 switch (ast->deint_id) {
263 if (ast->coded_framesize > ast->audio_framesize ||
265 ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
266 return AVERROR_INVALIDDATA;
267 if (ast->coded_framesize * sub_packet_h != 2*ast->audio_framesize) {
268 avpriv_request_sample(s, "mismatching interleaver parameters");
269 return AVERROR_INVALIDDATA;
273 if (ast->sub_packet_size <= 0 ||
274 ast->sub_packet_size > ast->audio_framesize)
275 return AVERROR_INVALIDDATA;
276 if (ast->audio_framesize % ast->sub_packet_size)
277 return AVERROR_INVALIDDATA;
285 av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
286 return AVERROR_INVALIDDATA;
288 if (ast->deint_id == DEINT_ID_INT4 ||
289 ast->deint_id == DEINT_ID_GENR ||
290 ast->deint_id == DEINT_ID_SIPR) {
291 if (st->codecpar->block_align <= 0 ||
292 ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
293 ast->audio_framesize * sub_packet_h < st->codecpar->block_align)
294 return AVERROR_INVALIDDATA;
295 if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
296 return AVERROR(ENOMEM);
303 rm_read_metadata(s, pb, 0);
309 int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb,
310 AVStream *st, RMStream *rst,
311 unsigned int codec_data_size, const uint8_t *mime)
318 if (codec_data_size > INT_MAX)
319 return AVERROR_INVALIDDATA;
320 if (codec_data_size == 0)
323 avpriv_set_pts_info(st, 64, 1, 1000);
324 codec_pos = avio_tell(pb);
327 if (v == MKTAG(0xfd, 'a', 'r', '.')) {
329 if (rm_read_audio_stream_info(s, pb, st, rst, 0))
331 } else if (v == MKBETAG('L', 'S', 'D', ':')) {
332 avio_seek(pb, -4, SEEK_CUR);
333 if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size)) < 0)
336 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
337 st->codecpar->codec_tag = AV_RL32(st->codecpar->extradata);
338 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
339 st->codecpar->codec_tag);
340 } else if(mime && !strcmp(mime, "logical-fileinfo")){
341 int stream_count, rule_count, property_count, i;
342 ff_free_stream(s, st);
343 if (avio_rb16(pb) != 0) {
344 av_log(s, AV_LOG_WARNING, "Unsupported version\n");
347 stream_count = avio_rb16(pb);
348 avio_skip(pb, 6*stream_count);
349 rule_count = avio_rb16(pb);
350 avio_skip(pb, 2*rule_count);
351 property_count = avio_rb16(pb);
352 for(i=0; i<property_count; i++){
353 uint8_t name[128], val[128];
355 if (avio_rb16(pb) != 0) {
356 av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
357 goto skip; //FIXME skip just this one
359 get_str8(pb, name, sizeof(name));
360 switch(avio_rb32(pb)) {
361 case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
362 av_dict_set(&s->metadata, name, val, 0);
364 default: avio_skip(pb, avio_rb16(pb));
369 if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
371 av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
374 st->codecpar->codec_tag = avio_rl32(pb);
375 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
376 st->codecpar->codec_tag);
377 av_log(s, AV_LOG_TRACE, "%"PRIX32" %X\n",
378 st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0'));
379 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
381 st->codecpar->width = avio_rb16(pb);
382 st->codecpar->height = avio_rb16(pb);
383 avio_skip(pb, 2); // looks like bits per sample
384 avio_skip(pb, 4); // always zero?
385 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
386 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
389 if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
393 av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
394 0x10000, fps, (1 << 30) - 1);
395 #if FF_API_R_FRAME_RATE
396 st->r_frame_rate = st->avg_frame_rate;
398 } else if (s->error_recognition & AV_EF_EXPLODE) {
399 av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
400 return AVERROR_INVALIDDATA;
405 /* skip codec info */
406 size = avio_tell(pb) - codec_pos;
407 if (codec_data_size >= size) {
408 avio_skip(pb, codec_data_size - size);
410 av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
416 /** this function assumes that the demuxer has already seeked to the start
417 * of the INDX chunk, and will bail out if not. */
418 static int rm_read_index(AVFormatContext *s)
420 AVIOContext *pb = s->pb;
421 unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
425 if (avio_rl32(pb) != MKTAG('I','N','D','X'))
427 size = avio_rb32(pb);
431 n_pkts = avio_rb32(pb);
432 str_id = avio_rb16(pb);
433 next_off = avio_rb32(pb);
434 for (n = 0; n < s->nb_streams; n++)
435 if (s->streams[n]->id == str_id) {
439 if (n == s->nb_streams) {
440 av_log(s, AV_LOG_ERROR,
441 "Invalid stream index %d for index at pos %"PRId64"\n",
442 str_id, avio_tell(pb));
444 } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
445 av_log(s, AV_LOG_ERROR,
446 "Nr. of packets in packet index for stream index %d "
447 "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
448 str_id, avio_size(pb), avio_tell(pb),
449 (avio_size(pb) - avio_tell(pb)) / 14);
453 for (n = 0; n < n_pkts; n++) {
457 avio_skip(pb, 4); /* packet no. */
459 av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
463 if (next_off && avio_tell(pb) < next_off &&
464 avio_seek(pb, next_off, SEEK_SET) < 0) {
465 av_log(s, AV_LOG_ERROR,
466 "Non-linear index detected, not supported\n");
474 static int rm_read_header_old(AVFormatContext *s)
476 RMDemuxContext *rm = s->priv_data;
480 st = avformat_new_stream(s, NULL);
483 st->priv_data = ff_rm_alloc_rmstream();
485 return AVERROR(ENOMEM);
486 return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
489 static int rm_read_multi(AVFormatContext *s, AVIOContext *pb,
490 AVStream *st, char *mime)
492 int number_of_streams = avio_rb16(pb);
496 for (i = 0; i<number_of_streams; i++)
498 number_of_mdpr = avio_rb16(pb);
499 if (number_of_mdpr != 1) {
500 avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
502 for (i = 0; i < number_of_mdpr; i++) {
505 st2 = avformat_new_stream(s, NULL);
507 ret = AVERROR(ENOMEM);
510 st2->id = st->id + (i<<16);
511 st2->codecpar->bit_rate = st->codecpar->bit_rate;
512 st2->start_time = st->start_time;
513 st2->duration = st->duration;
514 st2->codecpar->codec_type = AVMEDIA_TYPE_DATA;
515 st2->priv_data = ff_rm_alloc_rmstream();
517 return AVERROR(ENOMEM);
521 size2 = avio_rb32(pb);
522 ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
530 static int rm_read_header(AVFormatContext *s)
532 RMDemuxContext *rm = s->priv_data;
534 AVIOContext *pb = s->pb;
537 unsigned int start_time, duration;
538 unsigned int data_off = 0, indx_off = 0;
539 char buf[128], mime[128];
546 if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
547 /* very old .ra format */
548 return rm_read_header_old(s);
549 } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
553 tag_size = avio_rb32(pb);
554 avio_skip(pb, tag_size - 8);
560 tag_size = avio_rb32(pb);
562 av_log(s, AV_LOG_TRACE, "tag=%s size=%d\n",
563 av_fourcc2str(tag), tag_size);
564 if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
567 case MKTAG('P', 'R', 'O', 'P'):
569 avio_rb32(pb); /* max bit rate */
570 avio_rb32(pb); /* avg bit rate */
571 avio_rb32(pb); /* max packet size */
572 avio_rb32(pb); /* avg packet size */
573 avio_rb32(pb); /* nb packets */
574 duration = avio_rb32(pb); /* duration */
575 s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
576 avio_rb32(pb); /* preroll */
577 indx_off = avio_rb32(pb); /* index offset */
578 data_off = avio_rb32(pb); /* data offset */
579 avio_rb16(pb); /* nb streams */
580 flags = avio_rb16(pb); /* flags */
582 case MKTAG('C', 'O', 'N', 'T'):
583 rm_read_metadata(s, pb, 1);
585 case MKTAG('M', 'D', 'P', 'R'):
586 st = avformat_new_stream(s, NULL);
588 ret = AVERROR(ENOMEM);
591 st->id = avio_rb16(pb);
592 avio_rb32(pb); /* max bit rate */
593 st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */
594 avio_rb32(pb); /* max packet size */
595 avio_rb32(pb); /* avg packet size */
596 start_time = avio_rb32(pb); /* start time */
597 avio_rb32(pb); /* preroll */
598 duration = avio_rb32(pb); /* duration */
599 st->start_time = start_time;
600 st->duration = duration;
602 s->duration = AV_NOPTS_VALUE;
603 get_str8(pb, buf, sizeof(buf)); /* desc */
604 get_str8(pb, mime, sizeof(mime)); /* mimetype */
605 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
606 st->priv_data = ff_rm_alloc_rmstream();
608 return AVERROR(ENOMEM);
610 size = avio_rb32(pb);
611 codec_pos = avio_tell(pb);
613 ffio_ensure_seekback(pb, 4);
615 if (v == MKBETAG('M', 'L', 'T', 'I')) {
616 ret = rm_read_multi(s, s->pb, st, mime);
619 avio_seek(pb, codec_pos + size, SEEK_SET);
622 if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
628 case MKTAG('D', 'A', 'T', 'A'):
631 /* unknown tag: skip it */
632 avio_skip(pb, tag_size - 10);
637 rm->nb_packets = avio_rb32(pb); /* number of packets */
638 if (!rm->nb_packets && (flags & 4))
639 rm->nb_packets = 3600 * 25;
640 avio_rb32(pb); /* next data header */
643 data_off = avio_tell(pb) - 18;
644 if (indx_off && (pb->seekable & AVIO_SEEKABLE_NORMAL) &&
645 !(s->flags & AVFMT_FLAG_IGNIDX) &&
646 avio_seek(pb, indx_off, SEEK_SET) >= 0) {
648 avio_seek(pb, data_off + 18, SEEK_SET);
658 static int get_num(AVIOContext *pb, int *len)
670 return (n << 16) | n1;
674 /* multiple of 20 bytes for ra144 (ugly) */
675 #define RAW_PACKET_SIZE 1000
677 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
678 RMDemuxContext *rm = s->priv_data;
679 AVIOContext *pb = s->pb;
681 uint32_t state=0xFFFFFFFF;
683 while(!avio_feof(pb)){
686 *pos= avio_tell(pb) - 3;
687 if(rm->remaining_len > 0){
688 num= rm->current_stream;
690 len= rm->remaining_len;
691 *timestamp = AV_NOPTS_VALUE;
694 state= (state<<8) + avio_r8(pb);
696 if(state == MKBETAG('I', 'N', 'D', 'X')){
697 int n_pkts, expected_len;
700 n_pkts = avio_rb32(pb);
701 expected_len = 20 + n_pkts * 14;
703 /* some files don't add index entries to chunk size... */
705 else if (len != expected_len)
706 av_log(s, AV_LOG_WARNING,
707 "Index size %d (%d pkts) is wrong, should be %d.\n",
708 len, n_pkts, expected_len);
709 len -= 14; // we already read part of the index header
713 } else if (state == MKBETAG('D','A','T','A')) {
714 av_log(s, AV_LOG_WARNING,
715 "DATA tag in middle of chunk, file may be broken.\n");
718 if(state > (unsigned)0xFFFF || state <= 12)
724 *timestamp = avio_rb32(pb);
725 mlti_id = (avio_r8(pb) >> 1) - 1;
726 mlti_id = FFMAX(mlti_id, 0) << 16;
727 *flags = avio_r8(pb); /* flags */
729 for(i=0;i<s->nb_streams;i++) {
731 if (mlti_id + num == st->id)
734 if (i == s->nb_streams) {
736 /* skip packet if unknown number */
738 rm->remaining_len = 0;
748 static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb,
749 RMDemuxContext *rm, RMStream *vst,
750 AVPacket *pkt, int len, int *pseq,
754 int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
758 hdr = avio_r8(pb); len--;
761 if(type != 3){ // not frame as a part of packet
762 seq = avio_r8(pb); len--;
764 if(type != 1){ // not whole frame
765 len2 = get_num(pb, &len);
766 pos = get_num(pb, &len);
767 pic_num = avio_r8(pb); len--;
770 av_log(s, AV_LOG_ERROR, "Insufficient data\n");
773 rm->remaining_len = len;
774 if(type&1){ // frame, not slice
775 if(type == 3){ // frame as a part of packet
779 if(rm->remaining_len < len) {
780 av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
783 rm->remaining_len -= len;
784 if ((ret = av_new_packet(pkt, len + 9)) < 0)
787 AV_WL32(pkt->data + 1, 1);
788 AV_WL32(pkt->data + 5, 0);
789 if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
790 av_packet_unref(pkt);
791 av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
792 return ret < 0 ? ret : AVERROR(EIO);
796 //now we have to deal with single slice
799 if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
800 if (len2 > ffio_limit(pb, len2)) {
801 av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
802 return AVERROR_INVALIDDATA;
804 vst->slices = ((hdr & 0x3F) << 1) + 1;
805 vst->videobufsize = len2 + 8*vst->slices + 1;
806 av_packet_unref(&vst->pkt); //FIXME this should be output.
807 if ((ret = av_new_packet(&vst->pkt, vst->videobufsize)) < 0)
809 memset(vst->pkt.data, 0, vst->pkt.size);
810 vst->videobufpos = 8*vst->slices + 1;
812 vst->curpic_num = pic_num;
813 vst->pktpos = avio_tell(pb);
816 len = FFMIN(len, pos);
818 if(++vst->cur_slice > vst->slices) {
819 av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
823 return AVERROR(ENOMEM);
824 AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
825 AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
826 if(vst->videobufpos + len > vst->videobufsize) {
827 av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
830 if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
832 vst->videobufpos += len;
833 rm->remaining_len-= len;
835 if (type == 2 || vst->videobufpos == vst->videobufsize) {
836 vst->pkt.data[0] = vst->cur_slice-1;
837 av_packet_move_ref(pkt, &vst->pkt);
838 if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
839 memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
840 vst->videobufpos - 1 - 8*vst->slices);
841 pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
842 pkt->pts = AV_NOPTS_VALUE;
843 pkt->pos = vst->pktpos;
852 rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
857 if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
859 for (j=0;j<pkt->size;j+=2) {
860 FFSWAP(int, ptr[0], ptr[1]);
866 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
867 int ret = avio_read(pb, dst, n);
869 if (ret >= 0) memset(dst + ret, 0, n - ret);
870 else memset(dst , 0, n);
871 av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
877 ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb,
878 AVStream *st, RMStream *ast, int len, AVPacket *pkt,
879 int *seq, int flags, int64_t timestamp)
881 RMDemuxContext *rm = s->priv_data;
884 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
885 rm->current_stream= st->id;
886 ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, ×tamp);
888 return ret < 0 ? ret : -1; //got partial frame or error
889 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
890 if ((ast->deint_id == DEINT_ID_GENR) ||
891 (ast->deint_id == DEINT_ID_INT4) ||
892 (ast->deint_id == DEINT_ID_SIPR)) {
894 int sps = ast->sub_packet_size;
895 int cfs = ast->coded_framesize;
896 int h = ast->sub_packet_h;
897 int y = ast->sub_packet_cnt;
898 int w = ast->audio_framesize;
901 y = ast->sub_packet_cnt = 0;
903 ast->audiotimestamp = timestamp;
905 switch (ast->deint_id) {
907 for (x = 0; x < h/2; x++)
908 readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
911 for (x = 0; x < w/sps; x++)
912 readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
915 readfull(s, pb, ast->pkt.data + y * w, w);
919 if (++(ast->sub_packet_cnt) < h)
921 if (ast->deint_id == DEINT_ID_SIPR)
922 ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
924 ast->sub_packet_cnt = 0;
925 rm->audio_stream_num = st->index;
926 if (st->codecpar->block_align <= 0) {
927 av_log(s, AV_LOG_ERROR, "Invalid block alignment %d\n", st->codecpar->block_align);
928 return AVERROR_INVALIDDATA;
930 rm->audio_pkt_cnt = h * w / st->codecpar->block_align;
931 } else if ((ast->deint_id == DEINT_ID_VBRF) ||
932 (ast->deint_id == DEINT_ID_VBRS)) {
934 rm->audio_stream_num = st->index;
935 ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
936 if (ast->sub_packet_cnt) {
937 for (x = 0; x < ast->sub_packet_cnt; x++)
938 ast->sub_packet_lengths[x] = avio_rb16(pb);
939 rm->audio_pkt_cnt = ast->sub_packet_cnt;
940 ast->audiotimestamp = timestamp;
944 ret = av_get_packet(pb, pkt, len);
947 rm_ac3_swap_bytes(st, pkt);
950 ret = av_get_packet(pb, pkt, len);
955 pkt->stream_index = st->index;
957 pkt->pts = timestamp;
959 pkt->flags |= AV_PKT_FLAG_KEY;
961 return st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
965 ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb,
966 AVStream *st, RMStream *ast, AVPacket *pkt)
968 RMDemuxContext *rm = s->priv_data;
971 av_assert0 (rm->audio_pkt_cnt > 0);
973 if (ast->deint_id == DEINT_ID_VBRF ||
974 ast->deint_id == DEINT_ID_VBRS) {
975 ret = av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
979 ret = av_new_packet(pkt, st->codecpar->block_align);
982 memcpy(pkt->data, ast->pkt.data + st->codecpar->block_align * //FIXME avoid this
983 (ast->sub_packet_h * ast->audio_framesize / st->codecpar->block_align - rm->audio_pkt_cnt),
984 st->codecpar->block_align);
987 if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
988 ast->audiotimestamp = AV_NOPTS_VALUE;
989 pkt->flags = AV_PKT_FLAG_KEY;
992 pkt->stream_index = st->index;
994 return rm->audio_pkt_cnt;
997 static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
999 RMDemuxContext *rm = s->priv_data;
1000 AVStream *st = NULL; // init to silence compiler warning
1001 int i, len, res, seq = 1;
1002 int64_t timestamp, pos;
1006 if (rm->audio_pkt_cnt) {
1007 // If there are queued audio packet return them first
1008 st = s->streams[rm->audio_stream_num];
1009 res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
1014 if (rm->old_format) {
1018 ast = st->priv_data;
1019 timestamp = AV_NOPTS_VALUE;
1020 len = !ast->audio_framesize ? RAW_PACKET_SIZE :
1021 ast->coded_framesize * ast->sub_packet_h / 2;
1022 flags = (seq++ == 1) ? 2 : 0;
1023 pos = avio_tell(s->pb);
1025 len = rm_sync(s, ×tamp, &flags, &i, &pos);
1030 if (avio_feof(s->pb))
1033 return AVERROR(EIO);
1035 res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
1036 &seq, flags, timestamp);
1039 if((flags&2) && (seq&0x7F) == 1)
1040 av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1045 if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1046 || st->discard >= AVDISCARD_ALL){
1047 av_packet_unref(pkt);
1055 static int rm_read_close(AVFormatContext *s)
1059 for (i=0;i<s->nb_streams;i++)
1060 ff_rm_free_rmstream(s->streams[i]->priv_data);
1065 static int rm_probe(const AVProbeData *p)
1067 /* check file header */
1068 if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1069 p->buf[2] == 'M' && p->buf[3] == 'F' &&
1070 p->buf[4] == 0 && p->buf[5] == 0) ||
1071 (p->buf[0] == '.' && p->buf[1] == 'r' &&
1072 p->buf[2] == 'a' && p->buf[3] == 0xfd))
1073 return AVPROBE_SCORE_MAX;
1078 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1079 int64_t *ppos, int64_t pos_limit)
1081 RMDemuxContext *rm = s->priv_data;
1083 int stream_index2, flags, len, h;
1088 return AV_NOPTS_VALUE;
1090 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1091 return AV_NOPTS_VALUE;
1093 rm->remaining_len=0;
1098 len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1100 return AV_NOPTS_VALUE;
1102 st = s->streams[stream_index2];
1103 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1104 h= avio_r8(s->pb); len--;
1106 seq = avio_r8(s->pb); len--;
1110 if((flags&2) && (seq&0x7F) == 1){
1111 av_log(s, AV_LOG_TRACE, "%d %d-%d %"PRId64" %d\n",
1112 flags, stream_index2, stream_index, dts, seq);
1113 av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1114 if(stream_index2 == stream_index)
1118 avio_skip(s->pb, len);
1124 static int rm_read_seek(AVFormatContext *s, int stream_index,
1125 int64_t pts, int flags)
1127 RMDemuxContext *rm = s->priv_data;
1129 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1131 rm->audio_pkt_cnt = 0;
1136 AVInputFormat ff_rm_demuxer = {
1138 .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1139 .priv_data_size = sizeof(RMDemuxContext),
1140 .read_probe = rm_probe,
1141 .read_header = rm_read_header,
1142 .read_packet = rm_read_packet,
1143 .read_close = rm_read_close,
1144 .read_timestamp = rm_read_dts,
1145 .read_seek = rm_read_seek,
1148 AVInputFormat ff_rdt_demuxer = {
1150 .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1151 .priv_data_size = sizeof(RMDemuxContext),
1152 .read_close = rm_read_close,
1153 .flags = AVFMT_NOFILE,
1156 static int ivr_probe(const AVProbeData *p)
1158 if (memcmp(p->buf, ".R1M\x0\x1\x1", 7) &&
1159 memcmp(p->buf, ".REC", 4))
1162 return AVPROBE_SCORE_MAX;
1165 static int ivr_read_header(AVFormatContext *s)
1167 unsigned tag, type, len, tlen, value;
1168 int i, j, n, count, nb_streams = 0, ret;
1169 uint8_t key[256], val[256];
1170 AVIOContext *pb = s->pb;
1172 int64_t pos, offset=0, temp;
1174 pos = avio_tell(pb);
1175 tag = avio_rl32(pb);
1176 if (tag == MKTAG('.','R','1','M')) {
1177 if (avio_rb16(pb) != 1)
1178 return AVERROR_INVALIDDATA;
1179 if (avio_r8(pb) != 1)
1180 return AVERROR_INVALIDDATA;
1181 len = avio_rb32(pb);
1184 temp = avio_rb64(pb);
1185 while (!avio_feof(pb) && temp) {
1187 temp = avio_rb64(pb);
1190 return AVERROR_INVALIDDATA;
1191 avio_skip(pb, offset - avio_tell(pb));
1192 if (avio_r8(pb) != 1)
1193 return AVERROR_INVALIDDATA;
1194 len = avio_rb32(pb);
1196 if (avio_r8(pb) != 2)
1197 return AVERROR_INVALIDDATA;
1199 pos = avio_tell(pb);
1200 tag = avio_rl32(pb);
1203 if (tag != MKTAG('.','R','E','C'))
1204 return AVERROR_INVALIDDATA;
1206 if (avio_r8(pb) != 0)
1207 return AVERROR_INVALIDDATA;
1208 count = avio_rb32(pb);
1209 for (i = 0; i < count; i++) {
1211 return AVERROR_INVALIDDATA;
1214 tlen = avio_rb32(pb);
1215 avio_get_str(pb, tlen, key, sizeof(key));
1216 len = avio_rb32(pb);
1218 avio_get_str(pb, len, val, sizeof(val));
1219 av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1220 } else if (type == 4) {
1221 av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1222 for (j = 0; j < len; j++) {
1224 return AVERROR_INVALIDDATA;
1225 av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1227 av_log(s, AV_LOG_DEBUG, "'\n");
1228 } else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) {
1229 nb_streams = value = avio_rb32(pb);
1230 } else if (len == 4 && type == 3) {
1231 value = avio_rb32(pb);
1232 av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1234 av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1239 for (n = 0; n < nb_streams; n++) {
1240 st = avformat_new_stream(s, NULL);
1242 return AVERROR(ENOMEM);
1243 st->priv_data = ff_rm_alloc_rmstream();
1245 return AVERROR(ENOMEM);
1247 if (avio_r8(pb) != 1)
1248 return AVERROR_INVALIDDATA;
1250 count = avio_rb32(pb);
1251 for (i = 0; i < count; i++) {
1253 return AVERROR_INVALIDDATA;
1256 tlen = avio_rb32(pb);
1257 avio_get_str(pb, tlen, key, sizeof(key));
1258 len = avio_rb32(pb);
1260 avio_get_str(pb, len, val, sizeof(val));
1261 av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1262 } else if (type == 4 && !strncmp(key, "OpaqueData", tlen)) {
1263 ret = ffio_ensure_seekback(pb, 4);
1266 if (avio_rb32(pb) == MKBETAG('M', 'L', 'T', 'I')) {
1267 ret = rm_read_multi(s, pb, st, NULL);
1270 return AVERROR_INVALIDDATA;
1271 avio_seek(pb, -4, SEEK_CUR);
1272 ret = ff_rm_read_mdpr_codecdata(s, pb, st, st->priv_data, len, NULL);
1277 } else if (type == 4) {
1280 av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1281 for (j = 0; j < len; j++)
1282 av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1283 av_log(s, AV_LOG_DEBUG, "'\n");
1284 } else if (len == 4 && type == 3 && !strncmp(key, "Duration", tlen)) {
1285 st->duration = avio_rb32(pb);
1286 } else if (len == 4 && type == 3) {
1287 value = avio_rb32(pb);
1288 av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1290 av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1296 if (avio_r8(pb) != 6)
1297 return AVERROR_INVALIDDATA;
1299 avio_skip(pb, avio_rb64(pb) + pos - avio_tell(s->pb));
1300 if (avio_r8(pb) != 8)
1301 return AVERROR_INVALIDDATA;
1307 static int ivr_read_packet(AVFormatContext *s, AVPacket *pkt)
1309 RMDemuxContext *rm = s->priv_data;
1310 int ret = AVERROR_EOF, opcode;
1311 AVIOContext *pb = s->pb;
1312 unsigned size, index;
1315 if (avio_feof(pb) || rm->data_end)
1318 pos = avio_tell(pb);
1321 if (rm->audio_pkt_cnt) {
1322 // If there are queued audio packet return them first
1325 st = s->streams[rm->audio_stream_num];
1326 ret = ff_rm_retrieve_cache(s, pb, st, st->priv_data, pkt);
1331 if (rm->remaining_len) {
1332 avio_skip(pb, rm->remaining_len);
1333 rm->remaining_len = 0;
1339 opcode = avio_r8(pb);
1344 pts = avio_rb32(pb);
1345 index = avio_rb16(pb);
1346 if (index >= s->nb_streams)
1347 return AVERROR_INVALIDDATA;
1350 size = avio_rb32(pb);
1353 if (size < 1 || size > INT_MAX/4) {
1354 av_log(s, AV_LOG_ERROR, "size %u is invalid\n", size);
1355 return AVERROR_INVALIDDATA;
1358 st = s->streams[index];
1359 ret = ff_rm_parse_packet(s, pb, st, st->priv_data, size, pkt,
1369 pkt->stream_index = index;
1370 } else if (opcode == 7) {
1371 pos = avio_rb64(pb);
1377 av_log(s, AV_LOG_ERROR, "Unsupported opcode=%d at %"PRIX64"\n", opcode, avio_tell(pb) - 1);
1378 return AVERROR(EIO);
1388 AVInputFormat ff_ivr_demuxer = {
1390 .long_name = NULL_IF_CONFIG_SMALL("IVR (Internet Video Recording)"),
1391 .priv_data_size = sizeof(RMDemuxContext),
1392 .read_probe = ivr_probe,
1393 .read_header = ivr_read_header,
1394 .read_packet = ivr_read_packet,
1395 .read_close = rm_read_close,
1396 .extensions = "ivr",