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 inline void get_strl(AVIOContext *pb, char *buf, int buf_size, int len)
79 if (buf_size > 0) *q = '\0';
82 static void get_str8(AVIOContext *pb, char *buf, int buf_size)
84 get_strl(pb, buf, buf_size, avio_r8(pb));
87 static int rm_read_extradata(AVIOContext *pb, AVCodecContext *avctx, unsigned size)
90 av_log(avctx, AV_LOG_ERROR, "extradata size %u too large\n", size);
93 if (ff_get_extradata(avctx, pb, size) < 0)
94 return AVERROR(ENOMEM);
98 static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
103 for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
104 int len = wide ? avio_rb16(pb) : avio_r8(pb);
105 get_strl(pb, buf, sizeof(buf), len);
106 av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
110 RMStream *ff_rm_alloc_rmstream (void)
112 RMStream *rms = av_mallocz(sizeof(RMStream));
113 rms->curpic_num = -1;
117 void ff_rm_free_rmstream (RMStream *rms)
119 av_free_packet(&rms->pkt);
122 static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
123 AVStream *st, RMStream *ast, int read_all)
130 version = avio_rb16(pb); /* version */
132 unsigned bytes_per_minute;
133 int header_size = avio_rb16(pb);
134 int64_t startpos = avio_tell(pb);
136 bytes_per_minute = avio_rb16(pb);
138 rm_read_metadata(s, pb, 0);
139 if ((startpos + header_size) >= avio_tell(pb) + 2) {
140 // fourcc (should always be "lpcJ")
142 get_str8(pb, buf, sizeof(buf));
144 // Skip extra header crap (this should never happen)
145 if ((startpos + header_size) > avio_tell(pb))
146 avio_skip(pb, header_size + startpos - avio_tell(pb));
147 if (bytes_per_minute)
148 st->codec->bit_rate = 8LL * bytes_per_minute / 60;
149 st->codec->sample_rate = 8000;
150 st->codec->channels = 1;
151 st->codec->channel_layout = AV_CH_LAYOUT_MONO;
152 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
153 st->codec->codec_id = AV_CODEC_ID_RA_144;
154 ast->deint_id = DEINT_ID_INT0;
156 int flavor, sub_packet_h, coded_framesize, sub_packet_size;
157 int codecdata_length;
158 unsigned bytes_per_minute;
159 /* old version (4) */
160 avio_skip(pb, 2); /* unused */
161 avio_rb32(pb); /* .ra4 */
162 avio_rb32(pb); /* data size */
163 avio_rb16(pb); /* version2 */
164 avio_rb32(pb); /* header size */
165 flavor= avio_rb16(pb); /* add codec info / flavor */
166 ast->coded_framesize = coded_framesize = avio_rb32(pb); /* coded frame size */
167 avio_rb32(pb); /* ??? */
168 bytes_per_minute = avio_rb32(pb);
170 if (bytes_per_minute)
171 st->codec->bit_rate = 8LL * bytes_per_minute / 60;
173 avio_rb32(pb); /* ??? */
174 ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
175 st->codec->block_align= avio_rb16(pb); /* frame size */
176 ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
177 avio_rb16(pb); /* ??? */
179 avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
181 st->codec->sample_rate = avio_rb16(pb);
183 st->codec->channels = avio_rb16(pb);
185 ast->deint_id = avio_rl32(pb);
186 avio_read(pb, buf, 4);
190 get_str8(pb, buf, sizeof(buf)); /* desc */
191 ast->deint_id = AV_RL32(buf);
192 get_str8(pb, buf, sizeof(buf)); /* desc */
194 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
195 st->codec->codec_tag = AV_RL32(buf);
196 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
197 st->codec->codec_tag);
199 switch (st->codec->codec_id) {
200 case AV_CODEC_ID_AC3:
201 st->need_parsing = AVSTREAM_PARSE_FULL;
203 case AV_CODEC_ID_RA_288:
204 st->codec->extradata_size= 0;
205 ast->audio_framesize = st->codec->block_align;
206 st->codec->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 + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
220 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
225 ast->audio_framesize = st->codec->block_align;
226 if (st->codec->codec_id == AV_CODEC_ID_SIPR) {
228 av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
232 st->codec->block_align = ff_sipr_subpk_size[flavor];
234 if(sub_packet_size <= 0){
235 av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
238 st->codec->block_align = ast->sub_packet_size;
240 if ((ret = rm_read_extradata(pb, st->codec, codecdata_length)) < 0)
244 case AV_CODEC_ID_AAC:
245 avio_rb16(pb); avio_r8(pb);
248 codecdata_length = avio_rb32(pb);
249 if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
250 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
253 if (codecdata_length >= 1) {
255 if ((ret = rm_read_extradata(pb, st->codec, codecdata_length - 1)) < 0)
260 switch (ast->deint_id) {
262 if (ast->coded_framesize > ast->audio_framesize ||
264 ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
265 return AVERROR_INVALIDDATA;
266 if (ast->coded_framesize * sub_packet_h != 2*ast->audio_framesize) {
267 avpriv_request_sample(s, "mismatching interleaver parameters");
268 return AVERROR_INVALIDDATA;
272 if (ast->sub_packet_size <= 0 ||
273 ast->sub_packet_size > ast->audio_framesize)
274 return AVERROR_INVALIDDATA;
275 if (ast->audio_framesize % ast->sub_packet_size)
276 return AVERROR_INVALIDDATA;
284 av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
285 return AVERROR_INVALIDDATA;
287 if (ast->deint_id == DEINT_ID_INT4 ||
288 ast->deint_id == DEINT_ID_GENR ||
289 ast->deint_id == DEINT_ID_SIPR) {
290 if (st->codec->block_align <= 0 ||
291 ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
292 ast->audio_framesize * sub_packet_h < st->codec->block_align)
293 return AVERROR_INVALIDDATA;
294 if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
295 return AVERROR(ENOMEM);
302 rm_read_metadata(s, pb, 0);
308 int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb,
309 AVStream *st, RMStream *rst,
310 unsigned int codec_data_size, const uint8_t *mime)
317 if (codec_data_size > INT_MAX)
318 return AVERROR_INVALIDDATA;
320 avpriv_set_pts_info(st, 64, 1, 1000);
321 codec_pos = avio_tell(pb);
324 if (v == MKBETAG('M', 'L', 'T', 'I')) {
325 int number_of_streams = avio_rb16(pb);
328 for (i = 0; i<number_of_streams; i++)
330 number_of_mdpr = avio_rb16(pb);
331 if (number_of_mdpr != 1) {
332 avpriv_request_sample(s, "MLTI with multiple MDPR");
338 if (v == MKTAG(0xfd, 'a', 'r', '.')) {
340 if (rm_read_audio_stream_info(s, pb, st, rst, 0))
342 } else if (v == MKBETAG('L', 'S', 'D', ':')) {
343 avio_seek(pb, -4, SEEK_CUR);
344 if ((ret = rm_read_extradata(pb, st->codec, codec_data_size)) < 0)
347 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
348 st->codec->codec_tag = AV_RL32(st->codec->extradata);
349 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
350 st->codec->codec_tag);
351 } else if(mime && !strcmp(mime, "logical-fileinfo")){
352 int stream_count, rule_count, property_count, i;
353 ff_free_stream(s, st);
354 if (avio_rb16(pb) != 0) {
355 av_log(s, AV_LOG_WARNING, "Unsupported version\n");
358 stream_count = avio_rb16(pb);
359 avio_skip(pb, 6*stream_count);
360 rule_count = avio_rb16(pb);
361 avio_skip(pb, 2*rule_count);
362 property_count = avio_rb16(pb);
363 for(i=0; i<property_count; i++){
364 uint8_t name[128], val[128];
366 if (avio_rb16(pb) != 0) {
367 av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
368 goto skip; //FIXME skip just this one
370 get_str8(pb, name, sizeof(name));
371 switch(avio_rb32(pb)) {
372 case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
373 av_dict_set(&s->metadata, name, val, 0);
375 default: avio_skip(pb, avio_rb16(pb));
380 if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
382 av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
385 st->codec->codec_tag = avio_rl32(pb);
386 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
387 st->codec->codec_tag);
388 av_dlog(s, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
389 if (st->codec->codec_id == AV_CODEC_ID_NONE)
391 st->codec->width = avio_rb16(pb);
392 st->codec->height = avio_rb16(pb);
393 avio_skip(pb, 2); // looks like bits per sample
394 avio_skip(pb, 4); // always zero?
395 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
396 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
399 if ((ret = rm_read_extradata(pb, st->codec, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
403 av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
404 0x10000, fps, (1 << 30) - 1);
405 #if FF_API_R_FRAME_RATE
406 st->r_frame_rate = st->avg_frame_rate;
408 } else if (s->error_recognition & AV_EF_EXPLODE) {
409 av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
410 return AVERROR_INVALIDDATA;
415 /* skip codec info */
416 size = avio_tell(pb) - codec_pos;
417 if (codec_data_size >= size) {
418 avio_skip(pb, codec_data_size - size);
420 av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size);
426 /** this function assumes that the demuxer has already seeked to the start
427 * of the INDX chunk, and will bail out if not. */
428 static int rm_read_index(AVFormatContext *s)
430 AVIOContext *pb = s->pb;
431 unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
435 if (avio_rl32(pb) != MKTAG('I','N','D','X'))
437 size = avio_rb32(pb);
441 n_pkts = avio_rb32(pb);
442 str_id = avio_rb16(pb);
443 next_off = avio_rb32(pb);
444 for (n = 0; n < s->nb_streams; n++)
445 if (s->streams[n]->id == str_id) {
449 if (n == s->nb_streams) {
450 av_log(s, AV_LOG_ERROR,
451 "Invalid stream index %d for index at pos %"PRId64"\n",
452 str_id, avio_tell(pb));
454 } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
455 av_log(s, AV_LOG_ERROR,
456 "Nr. of packets in packet index for stream index %d "
457 "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
458 str_id, avio_size(pb), avio_tell(pb),
459 (avio_size(pb) - avio_tell(pb)) / 14);
463 for (n = 0; n < n_pkts; n++) {
467 avio_skip(pb, 4); /* packet no. */
469 av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
473 if (next_off && avio_tell(pb) < next_off &&
474 avio_seek(pb, next_off, SEEK_SET) < 0) {
475 av_log(s, AV_LOG_ERROR,
476 "Non-linear index detected, not supported\n");
484 static int rm_read_header_old(AVFormatContext *s)
486 RMDemuxContext *rm = s->priv_data;
490 st = avformat_new_stream(s, NULL);
493 st->priv_data = ff_rm_alloc_rmstream();
494 return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
497 static int rm_read_header(AVFormatContext *s)
499 RMDemuxContext *rm = s->priv_data;
501 AVIOContext *pb = s->pb;
504 unsigned int start_time, duration;
505 unsigned int data_off = 0, indx_off = 0;
506 char buf[128], mime[128];
510 if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
511 /* very old .ra format */
512 return rm_read_header_old(s);
513 } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
517 tag_size = avio_rb32(pb);
518 avio_skip(pb, tag_size - 8);
524 tag_size = avio_rb32(pb);
526 av_dlog(s, "tag=%c%c%c%c (%08x) size=%d\n",
533 if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
536 case MKTAG('P', 'R', 'O', 'P'):
538 avio_rb32(pb); /* max bit rate */
539 avio_rb32(pb); /* avg bit rate */
540 avio_rb32(pb); /* max packet size */
541 avio_rb32(pb); /* avg packet size */
542 avio_rb32(pb); /* nb packets */
543 duration = avio_rb32(pb); /* duration */
544 s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
545 avio_rb32(pb); /* preroll */
546 indx_off = avio_rb32(pb); /* index offset */
547 data_off = avio_rb32(pb); /* data offset */
548 avio_rb16(pb); /* nb streams */
549 flags = avio_rb16(pb); /* flags */
551 case MKTAG('C', 'O', 'N', 'T'):
552 rm_read_metadata(s, pb, 1);
554 case MKTAG('M', 'D', 'P', 'R'):
555 st = avformat_new_stream(s, NULL);
557 return AVERROR(ENOMEM);
558 st->id = avio_rb16(pb);
559 avio_rb32(pb); /* max bit rate */
560 st->codec->bit_rate = avio_rb32(pb); /* bit rate */
561 avio_rb32(pb); /* max packet size */
562 avio_rb32(pb); /* avg packet size */
563 start_time = avio_rb32(pb); /* start time */
564 avio_rb32(pb); /* preroll */
565 duration = avio_rb32(pb); /* duration */
566 st->start_time = start_time;
567 st->duration = duration;
569 s->duration = AV_NOPTS_VALUE;
570 get_str8(pb, buf, sizeof(buf)); /* desc */
571 get_str8(pb, mime, sizeof(mime)); /* mimetype */
572 st->codec->codec_type = AVMEDIA_TYPE_DATA;
573 st->priv_data = ff_rm_alloc_rmstream();
574 if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
575 avio_rb32(pb), mime) < 0)
578 case MKTAG('D', 'A', 'T', 'A'):
581 /* unknown tag: skip it */
582 avio_skip(pb, tag_size - 10);
587 rm->nb_packets = avio_rb32(pb); /* number of packets */
588 if (!rm->nb_packets && (flags & 4))
589 rm->nb_packets = 3600 * 25;
590 avio_rb32(pb); /* next data header */
593 data_off = avio_tell(pb) - 18;
594 if (indx_off && pb->seekable && !(s->flags & AVFMT_FLAG_IGNIDX) &&
595 avio_seek(pb, indx_off, SEEK_SET) >= 0) {
597 avio_seek(pb, data_off + 18, SEEK_SET);
603 static int get_num(AVIOContext *pb, int *len)
615 return (n << 16) | n1;
619 /* multiple of 20 bytes for ra144 (ugly) */
620 #define RAW_PACKET_SIZE 1000
622 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
623 RMDemuxContext *rm = s->priv_data;
624 AVIOContext *pb = s->pb;
626 uint32_t state=0xFFFFFFFF;
628 while(!avio_feof(pb)){
630 *pos= avio_tell(pb) - 3;
631 if(rm->remaining_len > 0){
632 num= rm->current_stream;
633 len= rm->remaining_len;
634 *timestamp = AV_NOPTS_VALUE;
637 state= (state<<8) + avio_r8(pb);
639 if(state == MKBETAG('I', 'N', 'D', 'X')){
640 int n_pkts, expected_len;
643 n_pkts = avio_rb32(pb);
644 expected_len = 20 + n_pkts * 14;
646 /* some files don't add index entries to chunk size... */
648 else if (len != expected_len)
649 av_log(s, AV_LOG_WARNING,
650 "Index size %d (%d pkts) is wrong, should be %d.\n",
651 len, n_pkts, expected_len);
652 len -= 14; // we already read part of the index header
656 } else if (state == MKBETAG('D','A','T','A')) {
657 av_log(s, AV_LOG_WARNING,
658 "DATA tag in middle of chunk, file may be broken.\n");
661 if(state > (unsigned)0xFFFF || state <= 12)
667 *timestamp = avio_rb32(pb);
668 avio_r8(pb); /* reserved */
669 *flags = avio_r8(pb); /* flags */
671 for(i=0;i<s->nb_streams;i++) {
676 if (i == s->nb_streams) {
678 /* skip packet if unknown number */
680 rm->remaining_len = 0;
690 static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb,
691 RMDemuxContext *rm, RMStream *vst,
692 AVPacket *pkt, int len, int *pseq,
696 int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silcense compiler warning
700 hdr = avio_r8(pb); len--;
703 if(type != 3){ // not frame as a part of packet
704 seq = avio_r8(pb); len--;
706 if(type != 1){ // not whole frame
707 len2 = get_num(pb, &len);
708 pos = get_num(pb, &len);
709 pic_num = avio_r8(pb); len--;
712 av_log(s, AV_LOG_ERROR, "Insufficient data\n");
715 rm->remaining_len = len;
716 if(type&1){ // frame, not slice
717 if(type == 3){ // frame as a part of packet
721 if(rm->remaining_len < len) {
722 av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
725 rm->remaining_len -= len;
726 if(av_new_packet(pkt, len + 9) < 0)
729 AV_WL32(pkt->data + 1, 1);
730 AV_WL32(pkt->data + 5, 0);
731 if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
733 av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
734 return ret < 0 ? ret : AVERROR(EIO);
738 //now we have to deal with single slice
741 if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
742 if (len2 > ffio_limit(pb, len2)) {
743 av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
744 return AVERROR_INVALIDDATA;
746 vst->slices = ((hdr & 0x3F) << 1) + 1;
747 vst->videobufsize = len2 + 8*vst->slices + 1;
748 av_free_packet(&vst->pkt); //FIXME this should be output.
749 if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
750 return AVERROR(ENOMEM);
751 memset(vst->pkt.data, 0, vst->pkt.size);
752 vst->videobufpos = 8*vst->slices + 1;
754 vst->curpic_num = pic_num;
755 vst->pktpos = avio_tell(pb);
758 len = FFMIN(len, pos);
760 if(++vst->cur_slice > vst->slices) {
761 av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
765 return AVERROR(ENOMEM);
766 AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
767 AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
768 if(vst->videobufpos + len > vst->videobufsize) {
769 av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
772 if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
774 vst->videobufpos += len;
775 rm->remaining_len-= len;
777 if (type == 2 || vst->videobufpos == vst->videobufsize) {
778 vst->pkt.data[0] = vst->cur_slice-1;
783 #if FF_API_DESTRUCT_PACKET
784 FF_DISABLE_DEPRECATION_WARNINGS
785 vst->pkt.destruct = NULL;
786 FF_ENABLE_DEPRECATION_WARNINGS
788 if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
789 memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
790 vst->videobufpos - 1 - 8*vst->slices);
791 pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
792 pkt->pts = AV_NOPTS_VALUE;
793 pkt->pos = vst->pktpos;
802 rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
807 if (st->codec->codec_id == AV_CODEC_ID_AC3) {
809 for (j=0;j<pkt->size;j+=2) {
810 FFSWAP(int, ptr[0], ptr[1]);
816 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
817 int ret = avio_read(pb, dst, n);
819 if (ret >= 0) memset(dst + ret, 0, n - ret);
820 else memset(dst , 0, n);
821 av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
827 ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb,
828 AVStream *st, RMStream *ast, int len, AVPacket *pkt,
829 int *seq, int flags, int64_t timestamp)
831 RMDemuxContext *rm = s->priv_data;
834 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
835 rm->current_stream= st->id;
836 ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, ×tamp);
838 return ret < 0 ? ret : -1; //got partial frame or error
839 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
840 if ((ast->deint_id == DEINT_ID_GENR) ||
841 (ast->deint_id == DEINT_ID_INT4) ||
842 (ast->deint_id == DEINT_ID_SIPR)) {
844 int sps = ast->sub_packet_size;
845 int cfs = ast->coded_framesize;
846 int h = ast->sub_packet_h;
847 int y = ast->sub_packet_cnt;
848 int w = ast->audio_framesize;
851 y = ast->sub_packet_cnt = 0;
853 ast->audiotimestamp = timestamp;
855 switch (ast->deint_id) {
857 for (x = 0; x < h/2; x++)
858 readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
861 for (x = 0; x < w/sps; x++)
862 readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
865 readfull(s, pb, ast->pkt.data + y * w, w);
869 if (++(ast->sub_packet_cnt) < h)
871 if (ast->deint_id == DEINT_ID_SIPR)
872 ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
874 ast->sub_packet_cnt = 0;
875 rm->audio_stream_num = st->index;
876 rm->audio_pkt_cnt = h * w / st->codec->block_align;
877 } else if ((ast->deint_id == DEINT_ID_VBRF) ||
878 (ast->deint_id == DEINT_ID_VBRS)) {
880 rm->audio_stream_num = st->index;
881 ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
882 if (ast->sub_packet_cnt) {
883 for (x = 0; x < ast->sub_packet_cnt; x++)
884 ast->sub_packet_lengths[x] = avio_rb16(pb);
885 rm->audio_pkt_cnt = ast->sub_packet_cnt;
886 ast->audiotimestamp = timestamp;
890 av_get_packet(pb, pkt, len);
891 rm_ac3_swap_bytes(st, pkt);
894 av_get_packet(pb, pkt, len);
896 pkt->stream_index = st->index;
899 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
900 if(st->codec->codec_id == AV_CODEC_ID_RV20){
901 int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1);
902 av_log(s, AV_LOG_DEBUG, "%d %"PRId64" %d\n", *timestamp, *timestamp*512LL/25, seq);
904 seq |= (timestamp&~0x3FFF);
905 if(seq - timestamp > 0x2000) seq -= 0x4000;
906 if(seq - timestamp < -0x2000) seq += 0x4000;
911 pkt->pts = timestamp;
913 pkt->flags |= AV_PKT_FLAG_KEY;
915 return st->codec->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
919 ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb,
920 AVStream *st, RMStream *ast, AVPacket *pkt)
922 RMDemuxContext *rm = s->priv_data;
924 av_assert0 (rm->audio_pkt_cnt > 0);
926 if (ast->deint_id == DEINT_ID_VBRF ||
927 ast->deint_id == DEINT_ID_VBRS)
928 av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
930 int ret = av_new_packet(pkt, st->codec->block_align);
933 memcpy(pkt->data, ast->pkt.data + st->codec->block_align * //FIXME avoid this
934 (ast->sub_packet_h * ast->audio_framesize / st->codec->block_align - rm->audio_pkt_cnt),
935 st->codec->block_align);
938 if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
939 ast->audiotimestamp = AV_NOPTS_VALUE;
940 pkt->flags = AV_PKT_FLAG_KEY;
943 pkt->stream_index = st->index;
945 return rm->audio_pkt_cnt;
948 static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
950 RMDemuxContext *rm = s->priv_data;
951 AVStream *st = NULL; // init to silence compiler warning
952 int i, len, res, seq = 1;
953 int64_t timestamp, pos;
957 if (rm->audio_pkt_cnt) {
958 // If there are queued audio packet return them first
959 st = s->streams[rm->audio_stream_num];
960 res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
965 if (rm->old_format) {
970 timestamp = AV_NOPTS_VALUE;
971 len = !ast->audio_framesize ? RAW_PACKET_SIZE :
972 ast->coded_framesize * ast->sub_packet_h / 2;
973 flags = (seq++ == 1) ? 2 : 0;
974 pos = avio_tell(s->pb);
976 len = rm_sync(s, ×tamp, &flags, &i, &pos);
981 if (len <= 0 || avio_feof(s->pb))
984 res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
985 &seq, flags, timestamp);
988 if((flags&2) && (seq&0x7F) == 1)
989 av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
994 if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
995 || st->discard >= AVDISCARD_ALL){
1004 static int rm_read_close(AVFormatContext *s)
1008 for (i=0;i<s->nb_streams;i++)
1009 ff_rm_free_rmstream(s->streams[i]->priv_data);
1014 static int rm_probe(AVProbeData *p)
1016 /* check file header */
1017 if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
1018 p->buf[2] == 'M' && p->buf[3] == 'F' &&
1019 p->buf[4] == 0 && p->buf[5] == 0) ||
1020 (p->buf[0] == '.' && p->buf[1] == 'r' &&
1021 p->buf[2] == 'a' && p->buf[3] == 0xfd))
1022 return AVPROBE_SCORE_MAX;
1027 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1028 int64_t *ppos, int64_t pos_limit)
1030 RMDemuxContext *rm = s->priv_data;
1032 int stream_index2, flags, len, h;
1037 return AV_NOPTS_VALUE;
1039 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1040 return AV_NOPTS_VALUE;
1042 rm->remaining_len=0;
1047 len = rm_sync(s, &dts, &flags, &stream_index2, &pos);
1049 return AV_NOPTS_VALUE;
1051 st = s->streams[stream_index2];
1052 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1053 h= avio_r8(s->pb); len--;
1055 seq = avio_r8(s->pb); len--;
1059 if((flags&2) && (seq&0x7F) == 1){
1060 av_dlog(s, "%d %d-%d %"PRId64" %d\n",
1061 flags, stream_index2, stream_index, dts, seq);
1062 av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1063 if(stream_index2 == stream_index)
1067 avio_skip(s->pb, len);
1073 static int rm_read_seek(AVFormatContext *s, int stream_index,
1074 int64_t pts, int flags)
1076 RMDemuxContext *rm = s->priv_data;
1078 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1080 rm->audio_pkt_cnt = 0;
1085 AVInputFormat ff_rm_demuxer = {
1087 .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1088 .priv_data_size = sizeof(RMDemuxContext),
1089 .read_probe = rm_probe,
1090 .read_header = rm_read_header,
1091 .read_packet = rm_read_packet,
1092 .read_close = rm_read_close,
1093 .read_timestamp = rm_read_dts,
1094 .read_seek = rm_read_seek,
1097 AVInputFormat ff_rdt_demuxer = {
1099 .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1100 .priv_data_size = sizeof(RMDemuxContext),
1101 .read_close = rm_read_close,
1102 .flags = AVFMT_NOFILE,