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 ast->audio_framesize = st->codecpar->block_align;
211 st->codecpar->block_align = coded_framesize;
213 case AV_CODEC_ID_COOK:
214 st->need_parsing = AVSTREAM_PARSE_HEADERS;
215 case AV_CODEC_ID_ATRAC3:
216 case AV_CODEC_ID_SIPR:
218 codecdata_length = 0;
220 avio_rb16(pb); avio_r8(pb);
223 codecdata_length = avio_rb32(pb);
224 if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
225 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
230 ast->audio_framesize = st->codecpar->block_align;
231 if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
233 av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
237 st->codecpar->block_align = ff_sipr_subpk_size[flavor];
239 if(sub_packet_size <= 0){
240 av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
243 st->codecpar->block_align = ast->sub_packet_size;
245 if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length)) < 0)
249 case AV_CODEC_ID_AAC:
250 avio_rb16(pb); avio_r8(pb);
253 codecdata_length = avio_rb32(pb);
254 if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
255 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
258 if (codecdata_length >= 1) {
260 if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length - 1)) < 0)
265 switch (ast->deint_id) {
267 if (ast->coded_framesize > ast->audio_framesize ||
269 ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
270 return AVERROR_INVALIDDATA;
271 if (ast->coded_framesize * sub_packet_h != 2*ast->audio_framesize) {
272 avpriv_request_sample(s, "mismatching interleaver parameters");
273 return AVERROR_INVALIDDATA;
277 if (ast->sub_packet_size <= 0 ||
278 ast->sub_packet_size > ast->audio_framesize)
279 return AVERROR_INVALIDDATA;
280 if (ast->audio_framesize % ast->sub_packet_size)
281 return AVERROR_INVALIDDATA;
289 av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
290 return AVERROR_INVALIDDATA;
292 if (ast->deint_id == DEINT_ID_INT4 ||
293 ast->deint_id == DEINT_ID_GENR ||
294 ast->deint_id == DEINT_ID_SIPR) {
295 if (st->codecpar->block_align <= 0 ||
296 ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
297 ast->audio_framesize * sub_packet_h < st->codecpar->block_align)
298 return AVERROR_INVALIDDATA;
299 if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
300 return AVERROR(ENOMEM);
307 rm_read_metadata(s, pb, 0);
313 int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb,
314 AVStream *st, RMStream *rst,
315 unsigned int codec_data_size, const uint8_t *mime)
322 if (codec_data_size > INT_MAX)
323 return AVERROR_INVALIDDATA;
324 if (codec_data_size == 0)
327 avpriv_set_pts_info(st, 64, 1, 1000);
328 codec_pos = avio_tell(pb);
331 if (v == MKTAG(0xfd, 'a', 'r', '.')) {
333 if (rm_read_audio_stream_info(s, pb, st, rst, 0))
335 } else if (v == MKBETAG('L', 'S', 'D', ':')) {
336 avio_seek(pb, -4, SEEK_CUR);
337 if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size)) < 0)
340 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
341 st->codecpar->codec_tag = AV_RL32(st->codecpar->extradata);
342 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
343 st->codecpar->codec_tag);
344 } else if(mime && !strcmp(mime, "logical-fileinfo")){
345 int stream_count, rule_count, property_count, i;
346 ff_free_stream(s, st);
347 if (avio_rb16(pb) != 0) {
348 av_log(s, AV_LOG_WARNING, "Unsupported version\n");
351 stream_count = avio_rb16(pb);
352 avio_skip(pb, 6*stream_count);
353 rule_count = avio_rb16(pb);
354 avio_skip(pb, 2*rule_count);
355 property_count = avio_rb16(pb);
356 for(i=0; i<property_count; i++){
357 uint8_t name[128], val[128];
359 if (avio_rb16(pb) != 0) {
360 av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
361 goto skip; //FIXME skip just this one
363 get_str8(pb, name, sizeof(name));
364 switch(avio_rb32(pb)) {
365 case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
366 av_dict_set(&s->metadata, name, val, 0);
368 default: avio_skip(pb, avio_rb16(pb));
373 if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
375 av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
378 st->codecpar->codec_tag = avio_rl32(pb);
379 st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags,
380 st->codecpar->codec_tag);
381 av_log(s, AV_LOG_TRACE, "%X %X\n", st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0'));
382 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
384 st->codecpar->width = avio_rb16(pb);
385 st->codecpar->height = avio_rb16(pb);
386 avio_skip(pb, 2); // looks like bits per sample
387 avio_skip(pb, 4); // always zero?
388 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
389 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
392 if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
396 av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
397 0x10000, fps, (1 << 30) - 1);
398 #if FF_API_R_FRAME_RATE
399 st->r_frame_rate = st->avg_frame_rate;
401 } else if (s->error_recognition & AV_EF_EXPLODE) {
402 av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
403 return AVERROR_INVALIDDATA;
408 /* skip codec info */
409 size = avio_tell(pb) - codec_pos;
410 if (codec_data_size >= size) {
411 avio_skip(pb, codec_data_size - size);
413 av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
419 /** this function assumes that the demuxer has already seeked to the start
420 * of the INDX chunk, and will bail out if not. */
421 static int rm_read_index(AVFormatContext *s)
423 AVIOContext *pb = s->pb;
424 unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
428 if (avio_rl32(pb) != MKTAG('I','N','D','X'))
430 size = avio_rb32(pb);
434 n_pkts = avio_rb32(pb);
435 str_id = avio_rb16(pb);
436 next_off = avio_rb32(pb);
437 for (n = 0; n < s->nb_streams; n++)
438 if (s->streams[n]->id == str_id) {
442 if (n == s->nb_streams) {
443 av_log(s, AV_LOG_ERROR,
444 "Invalid stream index %d for index at pos %"PRId64"\n",
445 str_id, avio_tell(pb));
447 } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
448 av_log(s, AV_LOG_ERROR,
449 "Nr. of packets in packet index for stream index %d "
450 "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
451 str_id, avio_size(pb), avio_tell(pb),
452 (avio_size(pb) - avio_tell(pb)) / 14);
456 for (n = 0; n < n_pkts; n++) {
460 avio_skip(pb, 4); /* packet no. */
462 av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
466 if (next_off && avio_tell(pb) < next_off &&
467 avio_seek(pb, next_off, SEEK_SET) < 0) {
468 av_log(s, AV_LOG_ERROR,
469 "Non-linear index detected, not supported\n");
477 static int rm_read_header_old(AVFormatContext *s)
479 RMDemuxContext *rm = s->priv_data;
483 st = avformat_new_stream(s, NULL);
486 st->priv_data = ff_rm_alloc_rmstream();
488 return AVERROR(ENOMEM);
489 return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
492 static int rm_read_multi(AVFormatContext *s, AVIOContext *pb,
493 AVStream *st, char *mime)
495 int number_of_streams = avio_rb16(pb);
499 for (i = 0; i<number_of_streams; i++)
501 number_of_mdpr = avio_rb16(pb);
502 if (number_of_mdpr != 1) {
503 avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr);
505 for (i = 0; i < number_of_mdpr; i++) {
508 st2 = avformat_new_stream(s, NULL);
510 ret = AVERROR(ENOMEM);
513 st2->id = st->id + (i<<16);
514 st2->codecpar->bit_rate = st->codecpar->bit_rate;
515 st2->start_time = st->start_time;
516 st2->duration = st->duration;
517 st2->codecpar->codec_type = AVMEDIA_TYPE_DATA;
518 st2->priv_data = ff_rm_alloc_rmstream();
520 return AVERROR(ENOMEM);
524 size2 = avio_rb32(pb);
525 ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
533 static int rm_read_header(AVFormatContext *s)
535 RMDemuxContext *rm = s->priv_data;
537 AVIOContext *pb = s->pb;
540 unsigned int start_time, duration;
541 unsigned int data_off = 0, indx_off = 0;
542 char buf[128], mime[128];
549 if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
550 /* very old .ra format */
551 return rm_read_header_old(s);
552 } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
556 tag_size = avio_rb32(pb);
557 avio_skip(pb, tag_size - 8);
563 tag_size = avio_rb32(pb);
565 av_log(s, AV_LOG_TRACE, "tag=%c%c%c%c (%08x) size=%d\n",
572 if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
575 case MKTAG('P', 'R', 'O', 'P'):
577 avio_rb32(pb); /* max bit rate */
578 avio_rb32(pb); /* avg bit rate */
579 avio_rb32(pb); /* max packet size */
580 avio_rb32(pb); /* avg packet size */
581 avio_rb32(pb); /* nb packets */
582 duration = avio_rb32(pb); /* duration */
583 s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
584 avio_rb32(pb); /* preroll */
585 indx_off = avio_rb32(pb); /* index offset */
586 data_off = avio_rb32(pb); /* data offset */
587 avio_rb16(pb); /* nb streams */
588 flags = avio_rb16(pb); /* flags */
590 case MKTAG('C', 'O', 'N', 'T'):
591 rm_read_metadata(s, pb, 1);
593 case MKTAG('M', 'D', 'P', 'R'):
594 st = avformat_new_stream(s, NULL);
596 ret = AVERROR(ENOMEM);
599 st->id = avio_rb16(pb);
600 avio_rb32(pb); /* max bit rate */
601 st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */
602 avio_rb32(pb); /* max packet size */
603 avio_rb32(pb); /* avg packet size */
604 start_time = avio_rb32(pb); /* start time */
605 avio_rb32(pb); /* preroll */
606 duration = avio_rb32(pb); /* duration */
607 st->start_time = start_time;
608 st->duration = duration;
610 s->duration = AV_NOPTS_VALUE;
611 get_str8(pb, buf, sizeof(buf)); /* desc */
612 get_str8(pb, mime, sizeof(mime)); /* mimetype */
613 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
614 st->priv_data = ff_rm_alloc_rmstream();
616 return AVERROR(ENOMEM);
618 size = avio_rb32(pb);
619 codec_pos = avio_tell(pb);
621 ffio_ensure_seekback(pb, 4);
623 if (v == MKBETAG('M', 'L', 'T', 'I')) {
624 ret = rm_read_multi(s, s->pb, st, mime);
627 avio_seek(pb, codec_pos + size, SEEK_SET);
630 if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
636 case MKTAG('D', 'A', 'T', 'A'):
639 /* unknown tag: skip it */
640 avio_skip(pb, tag_size - 10);
645 rm->nb_packets = avio_rb32(pb); /* number of packets */
646 if (!rm->nb_packets && (flags & 4))
647 rm->nb_packets = 3600 * 25;
648 avio_rb32(pb); /* next data header */
651 data_off = avio_tell(pb) - 18;
652 if (indx_off && pb->seekable && !(s->flags & AVFMT_FLAG_IGNIDX) &&
653 avio_seek(pb, indx_off, SEEK_SET) >= 0) {
655 avio_seek(pb, data_off + 18, SEEK_SET);
665 static int get_num(AVIOContext *pb, int *len)
677 return (n << 16) | n1;
681 /* multiple of 20 bytes for ra144 (ugly) */
682 #define RAW_PACKET_SIZE 1000
684 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
685 RMDemuxContext *rm = s->priv_data;
686 AVIOContext *pb = s->pb;
688 uint32_t state=0xFFFFFFFF;
690 while(!avio_feof(pb)){
693 *pos= avio_tell(pb) - 3;
694 if(rm->remaining_len > 0){
695 num= rm->current_stream;
697 len= rm->remaining_len;
698 *timestamp = AV_NOPTS_VALUE;
701 state= (state<<8) + avio_r8(pb);
703 if(state == MKBETAG('I', 'N', 'D', 'X')){
704 int n_pkts, expected_len;
707 n_pkts = avio_rb32(pb);
708 expected_len = 20 + n_pkts * 14;
710 /* some files don't add index entries to chunk size... */
712 else if (len != expected_len)
713 av_log(s, AV_LOG_WARNING,
714 "Index size %d (%d pkts) is wrong, should be %d.\n",
715 len, n_pkts, expected_len);
716 len -= 14; // we already read part of the index header
720 } else if (state == MKBETAG('D','A','T','A')) {
721 av_log(s, AV_LOG_WARNING,
722 "DATA tag in middle of chunk, file may be broken.\n");
725 if(state > (unsigned)0xFFFF || state <= 12)
731 *timestamp = avio_rb32(pb);
732 mlti_id = (avio_r8(pb)>>1)-1<<16;
733 mlti_id = FFMAX(mlti_id, 0);
734 *flags = avio_r8(pb); /* flags */
736 for(i=0;i<s->nb_streams;i++) {
738 if (mlti_id + num == st->id)
741 if (i == s->nb_streams) {
743 /* skip packet if unknown number */
745 rm->remaining_len = 0;
755 static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb,
756 RMDemuxContext *rm, RMStream *vst,
757 AVPacket *pkt, int len, int *pseq,
761 int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning
765 hdr = avio_r8(pb); len--;
768 if(type != 3){ // not frame as a part of packet
769 seq = avio_r8(pb); len--;
771 if(type != 1){ // not whole frame
772 len2 = get_num(pb, &len);
773 pos = get_num(pb, &len);
774 pic_num = avio_r8(pb); len--;
777 av_log(s, AV_LOG_ERROR, "Insufficient data\n");
780 rm->remaining_len = len;
781 if(type&1){ // frame, not slice
782 if(type == 3){ // frame as a part of packet
786 if(rm->remaining_len < len) {
787 av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
790 rm->remaining_len -= len;
791 if(av_new_packet(pkt, len + 9) < 0)
794 AV_WL32(pkt->data + 1, 1);
795 AV_WL32(pkt->data + 5, 0);
796 if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
797 av_packet_unref(pkt);
798 av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
799 return ret < 0 ? ret : AVERROR(EIO);
803 //now we have to deal with single slice
806 if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
807 if (len2 > ffio_limit(pb, len2)) {
808 av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
809 return AVERROR_INVALIDDATA;
811 vst->slices = ((hdr & 0x3F) << 1) + 1;
812 vst->videobufsize = len2 + 8*vst->slices + 1;
813 av_packet_unref(&vst->pkt); //FIXME this should be output.
814 if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
815 return AVERROR(ENOMEM);
816 memset(vst->pkt.data, 0, vst->pkt.size);
817 vst->videobufpos = 8*vst->slices + 1;
819 vst->curpic_num = pic_num;
820 vst->pktpos = avio_tell(pb);
823 len = FFMIN(len, pos);
825 if(++vst->cur_slice > vst->slices) {
826 av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
830 return AVERROR(ENOMEM);
831 AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
832 AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
833 if(vst->videobufpos + len > vst->videobufsize) {
834 av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
837 if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
839 vst->videobufpos += len;
840 rm->remaining_len-= len;
842 if (type == 2 || vst->videobufpos == vst->videobufsize) {
843 vst->pkt.data[0] = vst->cur_slice-1;
848 if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
849 memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
850 vst->videobufpos - 1 - 8*vst->slices);
851 pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
852 pkt->pts = AV_NOPTS_VALUE;
853 pkt->pos = vst->pktpos;
862 rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
867 if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
869 for (j=0;j<pkt->size;j+=2) {
870 FFSWAP(int, ptr[0], ptr[1]);
876 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
877 int ret = avio_read(pb, dst, n);
879 if (ret >= 0) memset(dst + ret, 0, n - ret);
880 else memset(dst , 0, n);
881 av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
887 ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb,
888 AVStream *st, RMStream *ast, int len, AVPacket *pkt,
889 int *seq, int flags, int64_t timestamp)
891 RMDemuxContext *rm = s->priv_data;
894 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
895 rm->current_stream= st->id;
896 ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, ×tamp);
898 return ret < 0 ? ret : -1; //got partial frame or error
899 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
900 if ((ast->deint_id == DEINT_ID_GENR) ||
901 (ast->deint_id == DEINT_ID_INT4) ||
902 (ast->deint_id == DEINT_ID_SIPR)) {
904 int sps = ast->sub_packet_size;
905 int cfs = ast->coded_framesize;
906 int h = ast->sub_packet_h;
907 int y = ast->sub_packet_cnt;
908 int w = ast->audio_framesize;
911 y = ast->sub_packet_cnt = 0;
913 ast->audiotimestamp = timestamp;
915 switch (ast->deint_id) {
917 for (x = 0; x < h/2; x++)
918 readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
921 for (x = 0; x < w/sps; x++)
922 readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
925 readfull(s, pb, ast->pkt.data + y * w, w);
929 if (++(ast->sub_packet_cnt) < h)
931 if (ast->deint_id == DEINT_ID_SIPR)
932 ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
934 ast->sub_packet_cnt = 0;
935 rm->audio_stream_num = st->index;
936 rm->audio_pkt_cnt = h * w / st->codecpar->block_align;
937 } else if ((ast->deint_id == DEINT_ID_VBRF) ||
938 (ast->deint_id == DEINT_ID_VBRS)) {
940 rm->audio_stream_num = st->index;
941 ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
942 if (ast->sub_packet_cnt) {
943 for (x = 0; x < ast->sub_packet_cnt; x++)
944 ast->sub_packet_lengths[x] = avio_rb16(pb);
945 rm->audio_pkt_cnt = ast->sub_packet_cnt;
946 ast->audiotimestamp = timestamp;
950 if ((ret = av_get_packet(pb, pkt, len)) < 0)
952 rm_ac3_swap_bytes(st, pkt);
955 if ((ret = av_get_packet(pb, pkt, len)) < 0)
959 pkt->stream_index = st->index;
962 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
963 if(st->codecpar->codec_id == AV_CODEC_ID_RV20){
964 int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1);
965 av_log(s, AV_LOG_DEBUG, "%d %"PRId64" %d\n", *timestamp, *timestamp*512LL/25, seq);
967 seq |= (timestamp&~0x3FFF);
968 if(seq - timestamp > 0x2000) seq -= 0x4000;
969 if(seq - timestamp < -0x2000) seq += 0x4000;
974 pkt->pts = timestamp;
976 pkt->flags |= AV_PKT_FLAG_KEY;
978 return st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
982 ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb,
983 AVStream *st, RMStream *ast, AVPacket *pkt)
985 RMDemuxContext *rm = s->priv_data;
987 av_assert0 (rm->audio_pkt_cnt > 0);
989 if (ast->deint_id == DEINT_ID_VBRF ||
990 ast->deint_id == DEINT_ID_VBRS) {
991 int ret = av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
995 int ret = av_new_packet(pkt, st->codecpar->block_align);
998 memcpy(pkt->data, ast->pkt.data + st->codecpar->block_align * //FIXME avoid this
999 (ast->sub_packet_h * ast->audio_framesize / st->codecpar->block_align - rm->audio_pkt_cnt),
1000 st->codecpar->block_align);
1002 rm->audio_pkt_cnt--;
1003 if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
1004 ast->audiotimestamp = AV_NOPTS_VALUE;
1005 pkt->flags = AV_PKT_FLAG_KEY;
1008 pkt->stream_index = st->index;
1010 return rm->audio_pkt_cnt;
1013 static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
1015 RMDemuxContext *rm = s->priv_data;
1016 AVStream *st = NULL; // init to silence compiler warning
1017 int i, len, res, seq = 1;
1018 int64_t timestamp, pos;
1022 if (rm->audio_pkt_cnt) {
1023 // If there are queued audio packet return them first
1024 st = s->streams[rm->audio_stream_num];
1025 res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
1030 if (rm->old_format) {
1034 ast = st->priv_data;
1035 timestamp = AV_NOPTS_VALUE;
1036 len = !ast->audio_framesize ? RAW_PACKET_SIZE :
1037 ast->coded_framesize * ast->sub_packet_h / 2;
1038 flags = (seq++ == 1) ? 2 : 0;
1039 pos = avio_tell(s->pb);
1041 len = rm_sync(s, ×tamp, &flags, &i, &pos);
1046 if (len <= 0 || avio_feof(s->pb))
1047 return AVERROR(EIO);
1049 res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
1050 &seq, flags, timestamp);
1053 if((flags&2) && (seq&0x7F) == 1)
1054 av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1059 if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1060 || st->discard >= AVDISCARD_ALL){
1061 av_packet_unref(pkt);
1069 static int rm_read_close(AVFormatContext *s)
1073 for (i=0;i<s->nb_streams;i++)
1074 ff_rm_free_rmstream(s->streams[i]->priv_data);
1079 static int rm_probe(AVProbeData *p)
1081 /* check file header */
1082 if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1083 p->buf[2] == 'M' && p->buf[3] == 'F' &&
1084 p->buf[4] == 0 && p->buf[5] == 0) ||
1085 (p->buf[0] == '.' && p->buf[1] == 'r' &&
1086 p->buf[2] == 'a' && p->buf[3] == 0xfd))
1087 return AVPROBE_SCORE_MAX;
1092 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1093 int64_t *ppos, int64_t pos_limit)
1095 RMDemuxContext *rm = s->priv_data;
1097 int stream_index2, flags, len, h;
1102 return AV_NOPTS_VALUE;
1104 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1105 return AV_NOPTS_VALUE;
1107 rm->remaining_len=0;
1112 len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1114 return AV_NOPTS_VALUE;
1116 st = s->streams[stream_index2];
1117 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1118 h= avio_r8(s->pb); len--;
1120 seq = avio_r8(s->pb); len--;
1124 if((flags&2) && (seq&0x7F) == 1){
1125 av_log(s, AV_LOG_TRACE, "%d %d-%d %"PRId64" %d\n",
1126 flags, stream_index2, stream_index, dts, seq);
1127 av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1128 if(stream_index2 == stream_index)
1132 avio_skip(s->pb, len);
1138 static int rm_read_seek(AVFormatContext *s, int stream_index,
1139 int64_t pts, int flags)
1141 RMDemuxContext *rm = s->priv_data;
1143 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1145 rm->audio_pkt_cnt = 0;
1150 AVInputFormat ff_rm_demuxer = {
1152 .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1153 .priv_data_size = sizeof(RMDemuxContext),
1154 .read_probe = rm_probe,
1155 .read_header = rm_read_header,
1156 .read_packet = rm_read_packet,
1157 .read_close = rm_read_close,
1158 .read_timestamp = rm_read_dts,
1159 .read_seek = rm_read_seek,
1162 AVInputFormat ff_rdt_demuxer = {
1164 .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1165 .priv_data_size = sizeof(RMDemuxContext),
1166 .read_close = rm_read_close,
1167 .flags = AVFMT_NOFILE,
1170 static int ivr_probe(AVProbeData *p)
1172 if (memcmp(p->buf, ".R1M\x0\x1\x1", 7) &&
1173 memcmp(p->buf, ".REC", 4))
1176 return AVPROBE_SCORE_MAX;
1179 static int ivr_read_header(AVFormatContext *s)
1181 unsigned tag, type, len, tlen, value;
1182 int i, j, n, count, nb_streams = 0, ret;
1183 uint8_t key[256], val[256];
1184 AVIOContext *pb = s->pb;
1186 int64_t pos, offset, temp;
1188 pos = avio_tell(pb);
1189 tag = avio_rl32(pb);
1190 if (tag == MKTAG('.','R','1','M')) {
1191 if (avio_rb16(pb) != 1)
1192 return AVERROR_INVALIDDATA;
1193 if (avio_r8(pb) != 1)
1194 return AVERROR_INVALIDDATA;
1195 len = avio_rb32(pb);
1198 temp = avio_rb64(pb);
1199 while (!avio_feof(pb) && temp) {
1201 temp = avio_rb64(pb);
1203 avio_skip(pb, offset - avio_tell(pb));
1204 if (avio_r8(pb) != 1)
1205 return AVERROR_INVALIDDATA;
1206 len = avio_rb32(pb);
1208 if (avio_r8(pb) != 2)
1209 return AVERROR_INVALIDDATA;
1211 pos = avio_tell(pb);
1212 tag = avio_rl32(pb);
1215 if (tag != MKTAG('.','R','E','C'))
1216 return AVERROR_INVALIDDATA;
1218 if (avio_r8(pb) != 0)
1219 return AVERROR_INVALIDDATA;
1220 count = avio_rb32(pb);
1221 for (i = 0; i < count; i++) {
1223 return AVERROR_INVALIDDATA;
1226 tlen = avio_rb32(pb);
1227 avio_get_str(pb, tlen, key, sizeof(key));
1228 len = avio_rb32(pb);
1230 avio_get_str(pb, len, val, sizeof(val));
1231 av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1232 } else if (type == 4) {
1233 av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1234 for (j = 0; j < len; j++)
1235 av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1236 av_log(s, AV_LOG_DEBUG, "'\n");
1237 } else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) {
1238 nb_streams = value = avio_rb32(pb);
1239 } else if (len == 4 && type == 3) {
1240 value = avio_rb32(pb);
1241 av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1243 av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1248 for (n = 0; n < nb_streams; n++) {
1249 st = avformat_new_stream(s, NULL);
1251 return AVERROR(ENOMEM);
1252 st->priv_data = ff_rm_alloc_rmstream();
1254 return AVERROR(ENOMEM);
1256 if (avio_r8(pb) != 1)
1257 return AVERROR_INVALIDDATA;
1259 count = avio_rb32(pb);
1260 for (i = 0; i < count; i++) {
1262 return AVERROR_INVALIDDATA;
1265 tlen = avio_rb32(pb);
1266 avio_get_str(pb, tlen, key, sizeof(key));
1267 len = avio_rb32(pb);
1269 avio_get_str(pb, len, val, sizeof(val));
1270 av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val);
1271 } else if (type == 4 && !strncmp(key, "OpaqueData", tlen)) {
1272 ret = ffio_ensure_seekback(pb, 4);
1275 if (avio_rb32(pb) == MKBETAG('M', 'L', 'T', 'I')) {
1276 ret = rm_read_multi(s, pb, st, NULL);
1278 avio_seek(pb, -4, SEEK_CUR);
1279 ret = ff_rm_read_mdpr_codecdata(s, pb, st, st->priv_data, len, NULL);
1284 } else if (type == 4) {
1287 av_log(s, AV_LOG_DEBUG, "%s = '0x", key);
1288 for (j = 0; j < len; j++)
1289 av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb));
1290 av_log(s, AV_LOG_DEBUG, "'\n");
1291 } else if (len == 4 && type == 3 && !strncmp(key, "Duration", tlen)) {
1292 st->duration = avio_rb32(pb);
1293 } else if (len == 4 && type == 3) {
1294 value = avio_rb32(pb);
1295 av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value);
1297 av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key);
1303 if (avio_r8(pb) != 6)
1304 return AVERROR_INVALIDDATA;
1306 avio_skip(pb, avio_rb64(pb) + pos - avio_tell(s->pb));
1307 if (avio_r8(pb) != 8)
1308 return AVERROR_INVALIDDATA;
1314 static int ivr_read_packet(AVFormatContext *s, AVPacket *pkt)
1316 RMDemuxContext *rm = s->priv_data;
1317 int ret = AVERROR_EOF, opcode;
1318 AVIOContext *pb = s->pb;
1319 unsigned size, index;
1322 if (avio_feof(pb) || rm->data_end)
1325 pos = avio_tell(pb);
1328 if (rm->audio_pkt_cnt) {
1329 // If there are queued audio packet return them first
1332 st = s->streams[rm->audio_stream_num];
1333 ret = ff_rm_retrieve_cache(s, pb, st, st->priv_data, pkt);
1338 if (rm->remaining_len) {
1339 avio_skip(pb, rm->remaining_len);
1340 rm->remaining_len = 0;
1346 opcode = avio_r8(pb);
1351 pts = avio_rb32(pb);
1352 index = avio_rb16(pb);
1353 if (index >= s->nb_streams)
1354 return AVERROR_INVALIDDATA;
1357 size = avio_rb32(pb);
1360 if (size < 1 || size > INT_MAX/4) {
1361 av_log(s, AV_LOG_ERROR, "size %u is invalid\n", size);
1362 return AVERROR_INVALIDDATA;
1365 st = s->streams[index];
1366 ret = ff_rm_parse_packet(s, pb, st, st->priv_data, size, pkt,
1376 pkt->stream_index = index;
1377 } else if (opcode == 7) {
1378 pos = avio_rb64(pb);
1384 av_log(s, AV_LOG_ERROR, "Unsupported opcode=%d at %"PRIX64"\n", opcode, avio_tell(pb) - 1);
1385 return AVERROR(EIO);
1395 AVInputFormat ff_ivr_demuxer = {
1397 .long_name = NULL_IF_CONFIG_SMALL("IVR (Internet Video Recording)"),
1398 .priv_data_size = sizeof(RMDemuxContext),
1399 .read_probe = ivr_probe,
1400 .read_header = ivr_read_header,
1401 .read_packet = ivr_read_packet,
1402 .read_close = rm_read_close,
1403 .extensions = "ivr",