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
64 int audio_stream_num; ///< Stream number for audio packets
65 int audio_pkt_cnt; ///< Output packet counter
68 static int rm_read_close(AVFormatContext *s);
70 static inline void get_strl(AVIOContext *pb, char *buf, int buf_size, int len)
81 if (buf_size > 0) *q = '\0';
84 static void get_str8(AVIOContext *pb, char *buf, int buf_size)
86 get_strl(pb, buf, buf_size, avio_r8(pb));
89 static int rm_read_extradata(AVIOContext *pb, AVCodecContext *avctx, unsigned size)
92 av_log(avctx, AV_LOG_ERROR, "extradata size %u too large\n", size);
95 if (ff_get_extradata(avctx, pb, size) < 0)
96 return AVERROR(ENOMEM);
100 static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
105 for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
106 int len = wide ? avio_rb16(pb) : avio_r8(pb);
107 get_strl(pb, buf, sizeof(buf), len);
108 av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
112 RMStream *ff_rm_alloc_rmstream (void)
114 RMStream *rms = av_mallocz(sizeof(RMStream));
115 rms->curpic_num = -1;
119 void ff_rm_free_rmstream (RMStream *rms)
121 av_free_packet(&rms->pkt);
124 static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
125 AVStream *st, RMStream *ast, int read_all)
132 version = avio_rb16(pb); /* version */
134 unsigned bytes_per_minute;
135 int header_size = avio_rb16(pb);
136 int64_t startpos = avio_tell(pb);
138 bytes_per_minute = avio_rb16(pb);
140 rm_read_metadata(s, pb, 0);
141 if ((startpos + header_size) >= avio_tell(pb) + 2) {
142 // fourcc (should always be "lpcJ")
144 get_str8(pb, buf, sizeof(buf));
146 // Skip extra header crap (this should never happen)
147 if ((startpos + header_size) > avio_tell(pb))
148 avio_skip(pb, header_size + startpos - avio_tell(pb));
149 if (bytes_per_minute)
150 st->codec->bit_rate = 8LL * bytes_per_minute / 60;
151 st->codec->sample_rate = 8000;
152 st->codec->channels = 1;
153 st->codec->channel_layout = AV_CH_LAYOUT_MONO;
154 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
155 st->codec->codec_id = AV_CODEC_ID_RA_144;
156 ast->deint_id = DEINT_ID_INT0;
158 int flavor, sub_packet_h, coded_framesize, sub_packet_size;
159 int codecdata_length;
160 unsigned bytes_per_minute;
161 /* old version (4) */
162 avio_skip(pb, 2); /* unused */
163 avio_rb32(pb); /* .ra4 */
164 avio_rb32(pb); /* data size */
165 avio_rb16(pb); /* version2 */
166 avio_rb32(pb); /* header size */
167 flavor= avio_rb16(pb); /* add codec info / flavor */
168 ast->coded_framesize = coded_framesize = avio_rb32(pb); /* coded frame size */
169 avio_rb32(pb); /* ??? */
170 bytes_per_minute = avio_rb32(pb);
172 if (bytes_per_minute)
173 st->codec->bit_rate = 8LL * bytes_per_minute / 60;
175 avio_rb32(pb); /* ??? */
176 ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
177 st->codec->block_align= avio_rb16(pb); /* frame size */
178 ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
179 avio_rb16(pb); /* ??? */
181 avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
183 st->codec->sample_rate = avio_rb16(pb);
185 st->codec->channels = avio_rb16(pb);
187 ast->deint_id = avio_rl32(pb);
188 avio_read(pb, buf, 4);
192 get_str8(pb, buf, sizeof(buf)); /* desc */
193 ast->deint_id = AV_RL32(buf);
194 get_str8(pb, buf, sizeof(buf)); /* desc */
196 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
197 st->codec->codec_tag = AV_RL32(buf);
198 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
199 st->codec->codec_tag);
201 switch (st->codec->codec_id) {
202 case AV_CODEC_ID_AC3:
203 st->need_parsing = AVSTREAM_PARSE_FULL;
205 case AV_CODEC_ID_RA_288:
206 st->codec->extradata_size= 0;
207 ast->audio_framesize = st->codec->block_align;
208 st->codec->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 + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
222 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
227 ast->audio_framesize = st->codec->block_align;
228 if (st->codec->codec_id == AV_CODEC_ID_SIPR) {
230 av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
234 st->codec->block_align = ff_sipr_subpk_size[flavor];
236 if(sub_packet_size <= 0){
237 av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
240 st->codec->block_align = ast->sub_packet_size;
242 if ((ret = rm_read_extradata(pb, st->codec, codecdata_length)) < 0)
246 case AV_CODEC_ID_AAC:
247 avio_rb16(pb); avio_r8(pb);
250 codecdata_length = avio_rb32(pb);
251 if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
252 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
255 if (codecdata_length >= 1) {
257 if ((ret = rm_read_extradata(pb, st->codec, codecdata_length - 1)) < 0)
262 switch (ast->deint_id) {
264 if (ast->coded_framesize > ast->audio_framesize ||
266 ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
267 return AVERROR_INVALIDDATA;
268 if (ast->coded_framesize * sub_packet_h != 2*ast->audio_framesize) {
269 avpriv_request_sample(s, "mismatching interleaver parameters");
270 return AVERROR_INVALIDDATA;
274 if (ast->sub_packet_size <= 0 ||
275 ast->sub_packet_size > ast->audio_framesize)
276 return AVERROR_INVALIDDATA;
277 if (ast->audio_framesize % ast->sub_packet_size)
278 return AVERROR_INVALIDDATA;
286 av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
287 return AVERROR_INVALIDDATA;
289 if (ast->deint_id == DEINT_ID_INT4 ||
290 ast->deint_id == DEINT_ID_GENR ||
291 ast->deint_id == DEINT_ID_SIPR) {
292 if (st->codec->block_align <= 0 ||
293 ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
294 ast->audio_framesize * sub_packet_h < st->codec->block_align)
295 return AVERROR_INVALIDDATA;
296 if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
297 return AVERROR(ENOMEM);
304 rm_read_metadata(s, pb, 0);
310 int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb,
311 AVStream *st, RMStream *rst,
312 unsigned int codec_data_size, const uint8_t *mime)
319 if (codec_data_size > INT_MAX)
320 return AVERROR_INVALIDDATA;
322 avpriv_set_pts_info(st, 64, 1, 1000);
323 codec_pos = avio_tell(pb);
326 if (v == MKBETAG('M', 'L', 'T', 'I')) {
327 int number_of_streams = avio_rb16(pb);
330 for (i = 0; i<number_of_streams; i++)
332 number_of_mdpr = avio_rb16(pb);
333 if (number_of_mdpr != 1) {
334 avpriv_request_sample(s, "MLTI with multiple MDPR");
340 if (v == MKTAG(0xfd, 'a', 'r', '.')) {
342 if (rm_read_audio_stream_info(s, pb, st, rst, 0))
344 } else if (v == MKBETAG('L', 'S', 'D', ':')) {
345 avio_seek(pb, -4, SEEK_CUR);
346 if ((ret = rm_read_extradata(pb, st->codec, codec_data_size)) < 0)
349 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
350 st->codec->codec_tag = AV_RL32(st->codec->extradata);
351 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
352 st->codec->codec_tag);
353 } else if(mime && !strcmp(mime, "logical-fileinfo")){
354 int stream_count, rule_count, property_count, i;
355 ff_free_stream(s, st);
356 if (avio_rb16(pb) != 0) {
357 av_log(s, AV_LOG_WARNING, "Unsupported version\n");
360 stream_count = avio_rb16(pb);
361 avio_skip(pb, 6*stream_count);
362 rule_count = avio_rb16(pb);
363 avio_skip(pb, 2*rule_count);
364 property_count = avio_rb16(pb);
365 for(i=0; i<property_count; i++){
366 uint8_t name[128], val[128];
368 if (avio_rb16(pb) != 0) {
369 av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
370 goto skip; //FIXME skip just this one
372 get_str8(pb, name, sizeof(name));
373 switch(avio_rb32(pb)) {
374 case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
375 av_dict_set(&s->metadata, name, val, 0);
377 default: avio_skip(pb, avio_rb16(pb));
382 if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
384 av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
387 st->codec->codec_tag = avio_rl32(pb);
388 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
389 st->codec->codec_tag);
390 av_dlog(s, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
391 if (st->codec->codec_id == AV_CODEC_ID_NONE)
393 st->codec->width = avio_rb16(pb);
394 st->codec->height = avio_rb16(pb);
395 avio_skip(pb, 2); // looks like bits per sample
396 avio_skip(pb, 4); // always zero?
397 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
398 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
401 if ((ret = rm_read_extradata(pb, st->codec, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
405 av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
406 0x10000, fps, (1 << 30) - 1);
407 #if FF_API_R_FRAME_RATE
408 st->r_frame_rate = st->avg_frame_rate;
410 } else if (s->error_recognition & AV_EF_EXPLODE) {
411 av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
412 return AVERROR_INVALIDDATA;
417 /* skip codec info */
418 size = avio_tell(pb) - codec_pos;
419 if (codec_data_size >= size) {
420 avio_skip(pb, codec_data_size - size);
422 av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
428 /** this function assumes that the demuxer has already seeked to the start
429 * of the INDX chunk, and will bail out if not. */
430 static int rm_read_index(AVFormatContext *s)
432 AVIOContext *pb = s->pb;
433 unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
437 if (avio_rl32(pb) != MKTAG('I','N','D','X'))
439 size = avio_rb32(pb);
443 n_pkts = avio_rb32(pb);
444 str_id = avio_rb16(pb);
445 next_off = avio_rb32(pb);
446 for (n = 0; n < s->nb_streams; n++)
447 if (s->streams[n]->id == str_id) {
451 if (n == s->nb_streams) {
452 av_log(s, AV_LOG_ERROR,
453 "Invalid stream index %d for index at pos %"PRId64"\n",
454 str_id, avio_tell(pb));
456 } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
457 av_log(s, AV_LOG_ERROR,
458 "Nr. of packets in packet index for stream index %d "
459 "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
460 str_id, avio_size(pb), avio_tell(pb),
461 (avio_size(pb) - avio_tell(pb)) / 14);
465 for (n = 0; n < n_pkts; n++) {
469 avio_skip(pb, 4); /* packet no. */
471 av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
475 if (next_off && avio_tell(pb) < next_off &&
476 avio_seek(pb, next_off, SEEK_SET) < 0) {
477 av_log(s, AV_LOG_ERROR,
478 "Non-linear index detected, not supported\n");
486 static int rm_read_header_old(AVFormatContext *s)
488 RMDemuxContext *rm = s->priv_data;
492 st = avformat_new_stream(s, NULL);
495 st->priv_data = ff_rm_alloc_rmstream();
496 return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
499 static int rm_read_header(AVFormatContext *s)
501 RMDemuxContext *rm = s->priv_data;
503 AVIOContext *pb = s->pb;
506 unsigned int start_time, duration;
507 unsigned int data_off = 0, indx_off = 0;
508 char buf[128], mime[128];
513 if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
514 /* very old .ra format */
515 return rm_read_header_old(s);
516 } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
520 tag_size = avio_rb32(pb);
521 avio_skip(pb, tag_size - 8);
527 tag_size = avio_rb32(pb);
529 av_dlog(s, "tag=%c%c%c%c (%08x) size=%d\n",
536 if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
539 case MKTAG('P', 'R', 'O', 'P'):
541 avio_rb32(pb); /* max bit rate */
542 avio_rb32(pb); /* avg bit rate */
543 avio_rb32(pb); /* max packet size */
544 avio_rb32(pb); /* avg packet size */
545 avio_rb32(pb); /* nb packets */
546 duration = avio_rb32(pb); /* duration */
547 s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
548 avio_rb32(pb); /* preroll */
549 indx_off = avio_rb32(pb); /* index offset */
550 data_off = avio_rb32(pb); /* data offset */
551 avio_rb16(pb); /* nb streams */
552 flags = avio_rb16(pb); /* flags */
554 case MKTAG('C', 'O', 'N', 'T'):
555 rm_read_metadata(s, pb, 1);
557 case MKTAG('M', 'D', 'P', 'R'):
558 st = avformat_new_stream(s, NULL);
560 ret = AVERROR(ENOMEM);
563 st->id = avio_rb16(pb);
564 avio_rb32(pb); /* max bit rate */
565 st->codec->bit_rate = avio_rb32(pb); /* bit rate */
566 avio_rb32(pb); /* max packet size */
567 avio_rb32(pb); /* avg packet size */
568 start_time = avio_rb32(pb); /* start time */
569 avio_rb32(pb); /* preroll */
570 duration = avio_rb32(pb); /* duration */
571 st->start_time = start_time;
572 st->duration = duration;
574 s->duration = AV_NOPTS_VALUE;
575 get_str8(pb, buf, sizeof(buf)); /* desc */
576 get_str8(pb, mime, sizeof(mime)); /* mimetype */
577 st->codec->codec_type = AVMEDIA_TYPE_DATA;
578 st->priv_data = ff_rm_alloc_rmstream();
579 if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
580 avio_rb32(pb), mime) < 0)
583 case MKTAG('D', 'A', 'T', 'A'):
586 /* unknown tag: skip it */
587 avio_skip(pb, tag_size - 10);
592 rm->nb_packets = avio_rb32(pb); /* number of packets */
593 if (!rm->nb_packets && (flags & 4))
594 rm->nb_packets = 3600 * 25;
595 avio_rb32(pb); /* next data header */
598 data_off = avio_tell(pb) - 18;
599 if (indx_off && pb->seekable && !(s->flags & AVFMT_FLAG_IGNIDX) &&
600 avio_seek(pb, indx_off, SEEK_SET) >= 0) {
602 avio_seek(pb, data_off + 18, SEEK_SET);
612 static int get_num(AVIOContext *pb, int *len)
624 return (n << 16) | n1;
628 /* multiple of 20 bytes for ra144 (ugly) */
629 #define RAW_PACKET_SIZE 1000
631 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
632 RMDemuxContext *rm = s->priv_data;
633 AVIOContext *pb = s->pb;
635 uint32_t state=0xFFFFFFFF;
637 while(!avio_feof(pb)){
639 *pos= avio_tell(pb) - 3;
640 if(rm->remaining_len > 0){
641 num= rm->current_stream;
642 len= rm->remaining_len;
643 *timestamp = AV_NOPTS_VALUE;
646 state= (state<<8) + avio_r8(pb);
648 if(state == MKBETAG('I', 'N', 'D', 'X')){
649 int n_pkts, expected_len;
652 n_pkts = avio_rb32(pb);
653 expected_len = 20 + n_pkts * 14;
655 /* some files don't add index entries to chunk size... */
657 else if (len != expected_len)
658 av_log(s, AV_LOG_WARNING,
659 "Index size %d (%d pkts) is wrong, should be %d.\n",
660 len, n_pkts, expected_len);
661 len -= 14; // we already read part of the index header
665 } else if (state == MKBETAG('D','A','T','A')) {
666 av_log(s, AV_LOG_WARNING,
667 "DATA tag in middle of chunk, file may be broken.\n");
670 if(state > (unsigned)0xFFFF || state <= 12)
676 *timestamp = avio_rb32(pb);
677 avio_r8(pb); /* reserved */
678 *flags = avio_r8(pb); /* flags */
680 for(i=0;i<s->nb_streams;i++) {
685 if (i == s->nb_streams) {
687 /* skip packet if unknown number */
689 rm->remaining_len = 0;
699 static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb,
700 RMDemuxContext *rm, RMStream *vst,
701 AVPacket *pkt, int len, int *pseq,
705 int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silcense compiler warning
709 hdr = avio_r8(pb); len--;
712 if(type != 3){ // not frame as a part of packet
713 seq = avio_r8(pb); len--;
715 if(type != 1){ // not whole frame
716 len2 = get_num(pb, &len);
717 pos = get_num(pb, &len);
718 pic_num = avio_r8(pb); len--;
721 av_log(s, AV_LOG_ERROR, "Insufficient data\n");
724 rm->remaining_len = len;
725 if(type&1){ // frame, not slice
726 if(type == 3){ // frame as a part of packet
730 if(rm->remaining_len < len) {
731 av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
734 rm->remaining_len -= len;
735 if(av_new_packet(pkt, len + 9) < 0)
738 AV_WL32(pkt->data + 1, 1);
739 AV_WL32(pkt->data + 5, 0);
740 if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
742 av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
743 return ret < 0 ? ret : AVERROR(EIO);
747 //now we have to deal with single slice
750 if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
751 if (len2 > ffio_limit(pb, len2)) {
752 av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
753 return AVERROR_INVALIDDATA;
755 vst->slices = ((hdr & 0x3F) << 1) + 1;
756 vst->videobufsize = len2 + 8*vst->slices + 1;
757 av_free_packet(&vst->pkt); //FIXME this should be output.
758 if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
759 return AVERROR(ENOMEM);
760 memset(vst->pkt.data, 0, vst->pkt.size);
761 vst->videobufpos = 8*vst->slices + 1;
763 vst->curpic_num = pic_num;
764 vst->pktpos = avio_tell(pb);
767 len = FFMIN(len, pos);
769 if(++vst->cur_slice > vst->slices) {
770 av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
774 return AVERROR(ENOMEM);
775 AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
776 AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
777 if(vst->videobufpos + len > vst->videobufsize) {
778 av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
781 if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
783 vst->videobufpos += len;
784 rm->remaining_len-= len;
786 if (type == 2 || vst->videobufpos == vst->videobufsize) {
787 vst->pkt.data[0] = vst->cur_slice-1;
792 #if FF_API_DESTRUCT_PACKET
793 FF_DISABLE_DEPRECATION_WARNINGS
794 vst->pkt.destruct = NULL;
795 FF_ENABLE_DEPRECATION_WARNINGS
797 if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
798 memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
799 vst->videobufpos - 1 - 8*vst->slices);
800 pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
801 pkt->pts = AV_NOPTS_VALUE;
802 pkt->pos = vst->pktpos;
811 rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
816 if (st->codec->codec_id == AV_CODEC_ID_AC3) {
818 for (j=0;j<pkt->size;j+=2) {
819 FFSWAP(int, ptr[0], ptr[1]);
825 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
826 int ret = avio_read(pb, dst, n);
828 if (ret >= 0) memset(dst + ret, 0, n - ret);
829 else memset(dst , 0, n);
830 av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
836 ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb,
837 AVStream *st, RMStream *ast, int len, AVPacket *pkt,
838 int *seq, int flags, int64_t timestamp)
840 RMDemuxContext *rm = s->priv_data;
843 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
844 rm->current_stream= st->id;
845 ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, ×tamp);
847 return ret < 0 ? ret : -1; //got partial frame or error
848 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
849 if ((ast->deint_id == DEINT_ID_GENR) ||
850 (ast->deint_id == DEINT_ID_INT4) ||
851 (ast->deint_id == DEINT_ID_SIPR)) {
853 int sps = ast->sub_packet_size;
854 int cfs = ast->coded_framesize;
855 int h = ast->sub_packet_h;
856 int y = ast->sub_packet_cnt;
857 int w = ast->audio_framesize;
860 y = ast->sub_packet_cnt = 0;
862 ast->audiotimestamp = timestamp;
864 switch (ast->deint_id) {
866 for (x = 0; x < h/2; x++)
867 readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
870 for (x = 0; x < w/sps; x++)
871 readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
874 readfull(s, pb, ast->pkt.data + y * w, w);
878 if (++(ast->sub_packet_cnt) < h)
880 if (ast->deint_id == DEINT_ID_SIPR)
881 ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
883 ast->sub_packet_cnt = 0;
884 rm->audio_stream_num = st->index;
885 rm->audio_pkt_cnt = h * w / st->codec->block_align;
886 } else if ((ast->deint_id == DEINT_ID_VBRF) ||
887 (ast->deint_id == DEINT_ID_VBRS)) {
889 rm->audio_stream_num = st->index;
890 ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
891 if (ast->sub_packet_cnt) {
892 for (x = 0; x < ast->sub_packet_cnt; x++)
893 ast->sub_packet_lengths[x] = avio_rb16(pb);
894 rm->audio_pkt_cnt = ast->sub_packet_cnt;
895 ast->audiotimestamp = timestamp;
899 if ((ret = av_get_packet(pb, pkt, len)) < 0)
901 rm_ac3_swap_bytes(st, pkt);
904 if ((ret = av_get_packet(pb, pkt, len)) < 0)
908 pkt->stream_index = st->index;
911 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
912 if(st->codec->codec_id == AV_CODEC_ID_RV20){
913 int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1);
914 av_log(s, AV_LOG_DEBUG, "%d %"PRId64" %d\n", *timestamp, *timestamp*512LL/25, seq);
916 seq |= (timestamp&~0x3FFF);
917 if(seq - timestamp > 0x2000) seq -= 0x4000;
918 if(seq - timestamp < -0x2000) seq += 0x4000;
923 pkt->pts = timestamp;
925 pkt->flags |= AV_PKT_FLAG_KEY;
927 return st->codec->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
931 ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb,
932 AVStream *st, RMStream *ast, AVPacket *pkt)
934 RMDemuxContext *rm = s->priv_data;
936 av_assert0 (rm->audio_pkt_cnt > 0);
938 if (ast->deint_id == DEINT_ID_VBRF ||
939 ast->deint_id == DEINT_ID_VBRS) {
940 int ret = av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
944 int ret = av_new_packet(pkt, st->codec->block_align);
947 memcpy(pkt->data, ast->pkt.data + st->codec->block_align * //FIXME avoid this
948 (ast->sub_packet_h * ast->audio_framesize / st->codec->block_align - rm->audio_pkt_cnt),
949 st->codec->block_align);
952 if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
953 ast->audiotimestamp = AV_NOPTS_VALUE;
954 pkt->flags = AV_PKT_FLAG_KEY;
957 pkt->stream_index = st->index;
959 return rm->audio_pkt_cnt;
962 static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
964 RMDemuxContext *rm = s->priv_data;
965 AVStream *st = NULL; // init to silence compiler warning
966 int i, len, res, seq = 1;
967 int64_t timestamp, pos;
971 if (rm->audio_pkt_cnt) {
972 // If there are queued audio packet return them first
973 st = s->streams[rm->audio_stream_num];
974 res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
979 if (rm->old_format) {
984 timestamp = AV_NOPTS_VALUE;
985 len = !ast->audio_framesize ? RAW_PACKET_SIZE :
986 ast->coded_framesize * ast->sub_packet_h / 2;
987 flags = (seq++ == 1) ? 2 : 0;
988 pos = avio_tell(s->pb);
990 len = rm_sync(s, ×tamp, &flags, &i, &pos);
995 if (len <= 0 || avio_feof(s->pb))
998 res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
999 &seq, flags, timestamp);
1002 if((flags&2) && (seq&0x7F) == 1)
1003 av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
1008 if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
1009 || st->discard >= AVDISCARD_ALL){
1010 av_free_packet(pkt);
1018 static int rm_read_close(AVFormatContext *s)
1022 for (i=0;i<s->nb_streams;i++)
1023 ff_rm_free_rmstream(s->streams[i]->priv_data);
1028 static int rm_probe(AVProbeData *p)
1030 /* check file header */
1031 if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1032 p->buf[2] == 'M' && p->buf[3] == 'F' &&
1033 p->buf[4] == 0 && p->buf[5] == 0) ||
1034 (p->buf[0] == '.' && p->buf[1] == 'r' &&
1035 p->buf[2] == 'a' && p->buf[3] == 0xfd))
1036 return AVPROBE_SCORE_MAX;
1041 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1042 int64_t *ppos, int64_t pos_limit)
1044 RMDemuxContext *rm = s->priv_data;
1046 int stream_index2, flags, len, h;
1051 return AV_NOPTS_VALUE;
1053 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1054 return AV_NOPTS_VALUE;
1056 rm->remaining_len=0;
1061 len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1063 return AV_NOPTS_VALUE;
1065 st = s->streams[stream_index2];
1066 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1067 h= avio_r8(s->pb); len--;
1069 seq = avio_r8(s->pb); len--;
1073 if((flags&2) && (seq&0x7F) == 1){
1074 av_dlog(s, "%d %d-%d %"PRId64" %d\n",
1075 flags, stream_index2, stream_index, dts, seq);
1076 av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1077 if(stream_index2 == stream_index)
1081 avio_skip(s->pb, len);
1087 static int rm_read_seek(AVFormatContext *s, int stream_index,
1088 int64_t pts, int flags)
1090 RMDemuxContext *rm = s->priv_data;
1092 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1094 rm->audio_pkt_cnt = 0;
1099 AVInputFormat ff_rm_demuxer = {
1101 .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1102 .priv_data_size = sizeof(RMDemuxContext),
1103 .read_probe = rm_probe,
1104 .read_header = rm_read_header,
1105 .read_packet = rm_read_packet,
1106 .read_close = rm_read_close,
1107 .read_timestamp = rm_read_dts,
1108 .read_seek = rm_read_seek,
1111 AVInputFormat ff_rdt_demuxer = {
1113 .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1114 .priv_data_size = sizeof(RMDemuxContext),
1115 .read_close = rm_read_close,
1116 .flags = AVFMT_NOFILE,