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
22 #include "libavutil/avassert.h"
23 #include "libavutil/avstring.h"
24 #include "libavutil/channel_layout.h"
25 #include "libavutil/internal.h"
26 #include "libavutil/intreadwrite.h"
27 #include "libavutil/dict.h"
29 #include "avio_internal.h"
34 #define DEINT_ID_GENR MKTAG('g', 'e', 'n', 'r') ///< interleaving for Cooker/ATRAC
35 #define DEINT_ID_INT0 MKTAG('I', 'n', 't', '0') ///< no interleaving needed
36 #define DEINT_ID_INT4 MKTAG('I', 'n', 't', '4') ///< interleaving for 28.8
37 #define DEINT_ID_SIPR MKTAG('s', 'i', 'p', 'r') ///< interleaving for Sipro
38 #define DEINT_ID_VBRF MKTAG('v', 'b', 'r', 'f') ///< VBR case for AAC
39 #define DEINT_ID_VBRS MKTAG('v', 'b', 'r', 's') ///< VBR case for AAC
42 AVPacket pkt; ///< place to store merged video frame / reordered audio data
43 int videobufsize; ///< current assembled frame size
44 int videobufpos; ///< position for the next slice in the video buffer
45 int curpic_num; ///< picture number of current frame
46 int cur_slice, slices;
47 int64_t pktpos; ///< first slice position in file
48 /// Audio descrambling matrix parameters
49 int64_t audiotimestamp; ///< Audio packet timestamp
50 int sub_packet_cnt; // Subpacket counter, used while reading
51 int sub_packet_size, sub_packet_h, coded_framesize; ///< Descrambling parameters from container
52 int audio_framesize; /// Audio frame size from container
53 int sub_packet_lengths[16]; /// Length of each subpacket
54 int32_t deint_id; ///< deinterleaver used in audio stream
62 int audio_stream_num; ///< Stream number for audio packets
63 int audio_pkt_cnt; ///< Output packet counter
66 static inline void get_strl(AVIOContext *pb, char *buf, int buf_size, int len)
77 if (buf_size > 0) *q = '\0';
80 static void get_str8(AVIOContext *pb, char *buf, int buf_size)
82 get_strl(pb, buf, buf_size, avio_r8(pb));
85 static int rm_read_extradata(AVIOContext *pb, AVCodecContext *avctx, unsigned size)
89 if (ff_alloc_extradata(avctx, size))
90 return AVERROR(ENOMEM);
91 avctx->extradata_size = avio_read(pb, avctx->extradata, size);
92 if (avctx->extradata_size != size)
97 static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
102 for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
103 int len = wide ? avio_rb16(pb) : avio_r8(pb);
104 get_strl(pb, buf, sizeof(buf), len);
105 av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
109 RMStream *ff_rm_alloc_rmstream (void)
111 RMStream *rms = av_mallocz(sizeof(RMStream));
112 rms->curpic_num = -1;
116 void ff_rm_free_rmstream (RMStream *rms)
118 av_free_packet(&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->codec->bit_rate = 8LL * bytes_per_minute / 60;
148 st->codec->sample_rate = 8000;
149 st->codec->channels = 1;
150 st->codec->channel_layout = AV_CH_LAYOUT_MONO;
151 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
152 st->codec->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->codec->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->codec->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->codec->sample_rate = avio_rb16(pb);
182 st->codec->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->codec->codec_type = AVMEDIA_TYPE_AUDIO;
194 st->codec->codec_tag = AV_RL32(buf);
195 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
196 st->codec->codec_tag);
198 switch (st->codec->codec_id) {
199 case AV_CODEC_ID_AC3:
200 st->need_parsing = AVSTREAM_PARSE_FULL;
202 case AV_CODEC_ID_RA_288:
203 st->codec->extradata_size= 0;
204 ast->audio_framesize = st->codec->block_align;
205 st->codec->block_align = coded_framesize;
207 case AV_CODEC_ID_COOK:
208 st->need_parsing = AVSTREAM_PARSE_HEADERS;
209 case AV_CODEC_ID_ATRAC3:
210 case AV_CODEC_ID_SIPR:
212 codecdata_length = 0;
214 avio_rb16(pb); avio_r8(pb);
217 codecdata_length = avio_rb32(pb);
218 if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
219 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
224 ast->audio_framesize = st->codec->block_align;
225 if (st->codec->codec_id == AV_CODEC_ID_SIPR) {
227 av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
231 st->codec->block_align = ff_sipr_subpk_size[flavor];
233 if(sub_packet_size <= 0){
234 av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
237 st->codec->block_align = ast->sub_packet_size;
239 if ((ret = rm_read_extradata(pb, st->codec, codecdata_length)) < 0)
243 case AV_CODEC_ID_AAC:
244 avio_rb16(pb); avio_r8(pb);
247 codecdata_length = avio_rb32(pb);
248 if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
249 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
252 if (codecdata_length >= 1) {
254 if ((ret = rm_read_extradata(pb, st->codec, codecdata_length - 1)) < 0)
259 av_strlcpy(st->codec->codec_name, buf, sizeof(st->codec->codec_name));
261 if (ast->deint_id == DEINT_ID_INT4 ||
262 ast->deint_id == DEINT_ID_GENR ||
263 ast->deint_id == DEINT_ID_SIPR) {
264 if (st->codec->block_align <= 0 ||
265 ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
266 ast->audio_framesize * sub_packet_h < st->codec->block_align)
267 return AVERROR_INVALIDDATA;
268 if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
269 return AVERROR(ENOMEM);
271 switch (ast->deint_id) {
273 if (ast->coded_framesize > ast->audio_framesize ||
275 ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
276 return AVERROR_INVALIDDATA;
279 if (ast->sub_packet_size <= 0 ||
280 ast->sub_packet_size > ast->audio_framesize)
281 return AVERROR_INVALIDDATA;
289 av_log(s, AV_LOG_ERROR, "Unknown interleaver %X\n", ast->deint_id);
290 return AVERROR_INVALIDDATA;
297 rm_read_metadata(s, pb, 0);
304 ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVIOContext *pb,
305 AVStream *st, RMStream *rst, int codec_data_size, const uint8_t *mime)
312 avpriv_set_pts_info(st, 64, 1, 1000);
313 codec_pos = avio_tell(pb);
315 if (v == MKTAG(0xfd, 'a', 'r', '.')) {
317 if (rm_read_audio_stream_info(s, pb, st, rst, 0))
319 } else if (v == MKBETAG('L', 'S', 'D', ':')) {
320 avio_seek(pb, -4, SEEK_CUR);
321 if ((ret = rm_read_extradata(pb, st->codec, codec_data_size)) < 0)
324 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
325 st->codec->codec_tag = AV_RL32(st->codec->extradata);
326 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
327 st->codec->codec_tag);
328 } else if(mime && !strcmp(mime, "logical-fileinfo")){
329 int stream_count, rule_count, property_count, i;
330 ff_free_stream(s, st);
331 if (avio_rb16(pb) != 0) {
332 av_log(s, AV_LOG_WARNING, "Unsupported version\n");
335 stream_count = avio_rb16(pb);
336 avio_skip(pb, 6*stream_count);
337 rule_count = avio_rb16(pb);
338 avio_skip(pb, 2*rule_count);
339 property_count = avio_rb16(pb);
340 for(i=0; i<property_count; i++){
341 uint8_t name[128], val[128];
343 if (avio_rb16(pb) != 0) {
344 av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
345 goto skip; //FIXME skip just this one
347 get_str8(pb, name, sizeof(name));
348 switch(avio_rb32(pb)) {
349 case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
350 av_dict_set(&s->metadata, name, val, 0);
352 default: avio_skip(pb, avio_rb16(pb));
357 if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
359 av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
362 st->codec->codec_tag = avio_rl32(pb);
363 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
364 st->codec->codec_tag);
365 av_dlog(s, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
366 if (st->codec->codec_id == AV_CODEC_ID_NONE)
368 st->codec->width = avio_rb16(pb);
369 st->codec->height = avio_rb16(pb);
370 avio_skip(pb, 2); // looks like bits per sample
371 avio_skip(pb, 4); // always zero?
372 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
373 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
376 if ((ret = rm_read_extradata(pb, st->codec, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
380 av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
381 0x10000, fps, (1 << 30) - 1);
382 #if FF_API_R_FRAME_RATE
383 st->r_frame_rate = st->avg_frame_rate;
385 } else if (s->error_recognition & AV_EF_EXPLODE) {
386 av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
387 return AVERROR_INVALIDDATA;
392 /* skip codec info */
393 size = avio_tell(pb) - codec_pos;
394 avio_skip(pb, codec_data_size - size);
399 /** this function assumes that the demuxer has already seeked to the start
400 * of the INDX chunk, and will bail out if not. */
401 static int rm_read_index(AVFormatContext *s)
403 AVIOContext *pb = s->pb;
404 unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
408 if (avio_rl32(pb) != MKTAG('I','N','D','X'))
410 size = avio_rb32(pb);
414 n_pkts = avio_rb32(pb);
415 str_id = avio_rb16(pb);
416 next_off = avio_rb32(pb);
417 for (n = 0; n < s->nb_streams; n++)
418 if (s->streams[n]->id == str_id) {
422 if (n == s->nb_streams) {
423 av_log(s, AV_LOG_ERROR,
424 "Invalid stream index %d for index at pos %"PRId64"\n",
425 str_id, avio_tell(pb));
427 } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
428 av_log(s, AV_LOG_ERROR,
429 "Nr. of packets in packet index for stream index %d "
430 "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
431 str_id, avio_size(pb), avio_tell(pb),
432 (avio_size(pb) - avio_tell(pb)) / 14);
436 for (n = 0; n < n_pkts; n++) {
440 avio_skip(pb, 4); /* packet no. */
442 av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
446 if (next_off && avio_tell(pb) < next_off &&
447 avio_seek(pb, next_off, SEEK_SET) < 0) {
448 av_log(s, AV_LOG_ERROR,
449 "Non-linear index detected, not supported\n");
457 static int rm_read_header_old(AVFormatContext *s)
459 RMDemuxContext *rm = s->priv_data;
463 st = avformat_new_stream(s, NULL);
466 st->priv_data = ff_rm_alloc_rmstream();
467 return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
470 static int rm_read_header(AVFormatContext *s)
472 RMDemuxContext *rm = s->priv_data;
474 AVIOContext *pb = s->pb;
477 unsigned int start_time, duration;
478 unsigned int data_off = 0, indx_off = 0;
479 char buf[128], mime[128];
483 if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
484 /* very old .ra format */
485 return rm_read_header_old(s);
486 } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
490 tag_size = avio_rb32(pb);
491 avio_skip(pb, tag_size - 8);
497 tag_size = avio_rb32(pb);
499 av_dlog(s, "tag=%c%c%c%c (%08x) size=%d\n",
506 if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
509 case MKTAG('P', 'R', 'O', 'P'):
511 avio_rb32(pb); /* max bit rate */
512 avio_rb32(pb); /* avg bit rate */
513 avio_rb32(pb); /* max packet size */
514 avio_rb32(pb); /* avg packet size */
515 avio_rb32(pb); /* nb packets */
516 duration = avio_rb32(pb); /* duration */
517 s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
518 avio_rb32(pb); /* preroll */
519 indx_off = avio_rb32(pb); /* index offset */
520 data_off = avio_rb32(pb); /* data offset */
521 avio_rb16(pb); /* nb streams */
522 flags = avio_rb16(pb); /* flags */
524 case MKTAG('C', 'O', 'N', 'T'):
525 rm_read_metadata(s, pb, 1);
527 case MKTAG('M', 'D', 'P', 'R'):
528 st = avformat_new_stream(s, NULL);
530 return AVERROR(ENOMEM);
531 st->id = avio_rb16(pb);
532 avio_rb32(pb); /* max bit rate */
533 st->codec->bit_rate = avio_rb32(pb); /* bit rate */
534 avio_rb32(pb); /* max packet size */
535 avio_rb32(pb); /* avg packet size */
536 start_time = avio_rb32(pb); /* start time */
537 avio_rb32(pb); /* preroll */
538 duration = avio_rb32(pb); /* duration */
539 st->start_time = start_time;
540 st->duration = duration;
542 s->duration = AV_NOPTS_VALUE;
543 get_str8(pb, buf, sizeof(buf)); /* desc */
544 get_str8(pb, mime, sizeof(mime)); /* mimetype */
545 st->codec->codec_type = AVMEDIA_TYPE_DATA;
546 st->priv_data = ff_rm_alloc_rmstream();
547 if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
548 avio_rb32(pb), mime) < 0)
551 case MKTAG('D', 'A', 'T', 'A'):
554 /* unknown tag: skip it */
555 avio_skip(pb, tag_size - 10);
560 rm->nb_packets = avio_rb32(pb); /* number of packets */
561 if (!rm->nb_packets && (flags & 4))
562 rm->nb_packets = 3600 * 25;
563 avio_rb32(pb); /* next data header */
566 data_off = avio_tell(pb) - 18;
567 if (indx_off && pb->seekable && !(s->flags & AVFMT_FLAG_IGNIDX) &&
568 avio_seek(pb, indx_off, SEEK_SET) >= 0) {
570 avio_seek(pb, data_off + 18, SEEK_SET);
576 static int get_num(AVIOContext *pb, int *len)
588 return (n << 16) | n1;
592 /* multiple of 20 bytes for ra144 (ugly) */
593 #define RAW_PACKET_SIZE 1000
595 static int sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
596 RMDemuxContext *rm = s->priv_data;
597 AVIOContext *pb = s->pb;
599 uint32_t state=0xFFFFFFFF;
601 while(!url_feof(pb)){
603 *pos= avio_tell(pb) - 3;
604 if(rm->remaining_len > 0){
605 num= rm->current_stream;
606 len= rm->remaining_len;
607 *timestamp = AV_NOPTS_VALUE;
610 state= (state<<8) + avio_r8(pb);
612 if(state == MKBETAG('I', 'N', 'D', 'X')){
613 int n_pkts, expected_len;
616 n_pkts = avio_rb32(pb);
617 expected_len = 20 + n_pkts * 14;
619 /* some files don't add index entries to chunk size... */
621 else if (len != expected_len)
622 av_log(s, AV_LOG_WARNING,
623 "Index size %d (%d pkts) is wrong, should be %d.\n",
624 len, n_pkts, expected_len);
625 len -= 14; // we already read part of the index header
629 } else if (state == MKBETAG('D','A','T','A')) {
630 av_log(s, AV_LOG_WARNING,
631 "DATA tag in middle of chunk, file may be broken.\n");
634 if(state > (unsigned)0xFFFF || state <= 12)
640 *timestamp = avio_rb32(pb);
641 avio_r8(pb); /* reserved */
642 *flags = avio_r8(pb); /* flags */
644 for(i=0;i<s->nb_streams;i++) {
649 if (i == s->nb_streams) {
651 /* skip packet if unknown number */
653 rm->remaining_len = 0;
663 static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb,
664 RMDemuxContext *rm, RMStream *vst,
665 AVPacket *pkt, int len, int *pseq,
669 int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silcense compiler warning
673 hdr = avio_r8(pb); len--;
676 if(type != 3){ // not frame as a part of packet
677 seq = avio_r8(pb); len--;
679 if(type != 1){ // not whole frame
680 len2 = get_num(pb, &len);
681 pos = get_num(pb, &len);
682 pic_num = avio_r8(pb); len--;
685 av_log(s, AV_LOG_ERROR, "Insufficient data\n");
688 rm->remaining_len = len;
689 if(type&1){ // frame, not slice
690 if(type == 3){ // frame as a part of packet
694 if(rm->remaining_len < len) {
695 av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
698 rm->remaining_len -= len;
699 if(av_new_packet(pkt, len + 9) < 0)
702 AV_WL32(pkt->data + 1, 1);
703 AV_WL32(pkt->data + 5, 0);
704 if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
706 av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
707 return ret < 0 ? ret : AVERROR(EIO);
711 //now we have to deal with single slice
714 if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
715 if (len2 > ffio_limit(pb, len2)) {
716 av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
717 return AVERROR_INVALIDDATA;
719 vst->slices = ((hdr & 0x3F) << 1) + 1;
720 vst->videobufsize = len2 + 8*vst->slices + 1;
721 av_free_packet(&vst->pkt); //FIXME this should be output.
722 if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
723 return AVERROR(ENOMEM);
724 memset(vst->pkt.data, 0, vst->pkt.size);
725 vst->videobufpos = 8*vst->slices + 1;
727 vst->curpic_num = pic_num;
728 vst->pktpos = avio_tell(pb);
731 len = FFMIN(len, pos);
733 if(++vst->cur_slice > vst->slices) {
734 av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
738 return AVERROR(ENOMEM);
739 AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
740 AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
741 if(vst->videobufpos + len > vst->videobufsize) {
742 av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
745 if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
747 vst->videobufpos += len;
748 rm->remaining_len-= len;
750 if (type == 2 || vst->videobufpos == vst->videobufsize) {
751 vst->pkt.data[0] = vst->cur_slice-1;
756 #if FF_API_DESTRUCT_PACKET
757 FF_DISABLE_DEPRECATION_WARNINGS
758 vst->pkt.destruct = NULL;
759 FF_ENABLE_DEPRECATION_WARNINGS
761 if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
762 memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
763 vst->videobufpos - 1 - 8*vst->slices);
764 pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
765 pkt->pts = AV_NOPTS_VALUE;
766 pkt->pos = vst->pktpos;
775 rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
780 if (st->codec->codec_id == AV_CODEC_ID_AC3) {
782 for (j=0;j<pkt->size;j+=2) {
783 FFSWAP(int, ptr[0], ptr[1]);
790 ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb,
791 AVStream *st, RMStream *ast, int len, AVPacket *pkt,
792 int *seq, int flags, int64_t timestamp)
794 RMDemuxContext *rm = s->priv_data;
797 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
798 rm->current_stream= st->id;
799 ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, ×tamp);
801 return ret < 0 ? ret : -1; //got partial frame or error
802 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
803 if ((ast->deint_id == DEINT_ID_GENR) ||
804 (ast->deint_id == DEINT_ID_INT4) ||
805 (ast->deint_id == DEINT_ID_SIPR)) {
807 int sps = ast->sub_packet_size;
808 int cfs = ast->coded_framesize;
809 int h = ast->sub_packet_h;
810 int y = ast->sub_packet_cnt;
811 int w = ast->audio_framesize;
814 y = ast->sub_packet_cnt = 0;
816 ast->audiotimestamp = timestamp;
818 switch (ast->deint_id) {
820 for (x = 0; x < h/2; x++)
821 avio_read(pb, ast->pkt.data+x*2*w+y*cfs, cfs);
824 for (x = 0; x < w/sps; x++)
825 avio_read(pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
828 avio_read(pb, ast->pkt.data + y * w, w);
832 if (++(ast->sub_packet_cnt) < h)
834 if (ast->deint_id == DEINT_ID_SIPR)
835 ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
837 ast->sub_packet_cnt = 0;
838 rm->audio_stream_num = st->index;
839 rm->audio_pkt_cnt = h * w / st->codec->block_align;
840 } else if ((ast->deint_id == DEINT_ID_VBRF) ||
841 (ast->deint_id == DEINT_ID_VBRS)) {
843 rm->audio_stream_num = st->index;
844 ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
845 if (ast->sub_packet_cnt) {
846 for (x = 0; x < ast->sub_packet_cnt; x++)
847 ast->sub_packet_lengths[x] = avio_rb16(pb);
848 rm->audio_pkt_cnt = ast->sub_packet_cnt;
849 ast->audiotimestamp = timestamp;
853 av_get_packet(pb, pkt, len);
854 rm_ac3_swap_bytes(st, pkt);
857 av_get_packet(pb, pkt, len);
859 pkt->stream_index = st->index;
862 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
863 if(st->codec->codec_id == AV_CODEC_ID_RV20){
864 int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1);
865 av_log(s, AV_LOG_DEBUG, "%d %"PRId64" %d\n", *timestamp, *timestamp*512LL/25, seq);
867 seq |= (timestamp&~0x3FFF);
868 if(seq - timestamp > 0x2000) seq -= 0x4000;
869 if(seq - timestamp < -0x2000) seq += 0x4000;
874 pkt->pts = timestamp;
876 pkt->flags |= AV_PKT_FLAG_KEY;
878 return st->codec->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
882 ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb,
883 AVStream *st, RMStream *ast, AVPacket *pkt)
885 RMDemuxContext *rm = s->priv_data;
887 av_assert0 (rm->audio_pkt_cnt > 0);
889 if (ast->deint_id == DEINT_ID_VBRF ||
890 ast->deint_id == DEINT_ID_VBRS)
891 av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
893 if(av_new_packet(pkt, st->codec->block_align) < 0)
894 return AVERROR(ENOMEM);
895 memcpy(pkt->data, ast->pkt.data + st->codec->block_align * //FIXME avoid this
896 (ast->sub_packet_h * ast->audio_framesize / st->codec->block_align - rm->audio_pkt_cnt),
897 st->codec->block_align);
900 if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
901 ast->audiotimestamp = AV_NOPTS_VALUE;
902 pkt->flags = AV_PKT_FLAG_KEY;
905 pkt->stream_index = st->index;
907 return rm->audio_pkt_cnt;
910 static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
912 RMDemuxContext *rm = s->priv_data;
913 AVStream *st = NULL; // init to silence compiler warning
914 int i, len, res, seq = 1;
915 int64_t timestamp, pos;
919 if (rm->audio_pkt_cnt) {
920 // If there are queued audio packet return them first
921 st = s->streams[rm->audio_stream_num];
922 res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
927 if (rm->old_format) {
932 timestamp = AV_NOPTS_VALUE;
933 len = !ast->audio_framesize ? RAW_PACKET_SIZE :
934 ast->coded_framesize * ast->sub_packet_h / 2;
935 flags = (seq++ == 1) ? 2 : 0;
936 pos = avio_tell(s->pb);
938 len=sync(s, ×tamp, &flags, &i, &pos);
943 if(len<0 || url_feof(s->pb))
946 res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
947 &seq, flags, timestamp);
950 if((flags&2) && (seq&0x7F) == 1)
951 av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
956 if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
957 || st->discard >= AVDISCARD_ALL){
966 static int rm_read_close(AVFormatContext *s)
970 for (i=0;i<s->nb_streams;i++)
971 ff_rm_free_rmstream(s->streams[i]->priv_data);
976 static int rm_probe(AVProbeData *p)
978 /* check file header */
979 if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
980 p->buf[2] == 'M' && p->buf[3] == 'F' &&
981 p->buf[4] == 0 && p->buf[5] == 0) ||
982 (p->buf[0] == '.' && p->buf[1] == 'r' &&
983 p->buf[2] == 'a' && p->buf[3] == 0xfd))
984 return AVPROBE_SCORE_MAX;
989 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
990 int64_t *ppos, int64_t pos_limit)
992 RMDemuxContext *rm = s->priv_data;
994 int stream_index2, flags, len, h;
999 return AV_NOPTS_VALUE;
1001 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1002 return AV_NOPTS_VALUE;
1004 rm->remaining_len=0;
1009 len=sync(s, &dts, &flags, &stream_index2, &pos);
1011 return AV_NOPTS_VALUE;
1013 st = s->streams[stream_index2];
1014 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1015 h= avio_r8(s->pb); len--;
1017 seq = avio_r8(s->pb); len--;
1021 if((flags&2) && (seq&0x7F) == 1){
1022 av_dlog(s, "%d %d-%d %"PRId64" %d\n",
1023 flags, stream_index2, stream_index, dts, seq);
1024 av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1025 if(stream_index2 == stream_index)
1029 avio_skip(s->pb, len);
1035 static int rm_read_seek(AVFormatContext *s, int stream_index,
1036 int64_t pts, int flags)
1038 RMDemuxContext *rm = s->priv_data;
1040 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1042 rm->audio_pkt_cnt = 0;
1047 AVInputFormat ff_rm_demuxer = {
1049 .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1050 .priv_data_size = sizeof(RMDemuxContext),
1051 .read_probe = rm_probe,
1052 .read_header = rm_read_header,
1053 .read_packet = rm_read_packet,
1054 .read_close = rm_read_close,
1055 .read_timestamp = rm_read_dts,
1056 .read_seek = rm_read_seek,
1059 AVInputFormat ff_rdt_demuxer = {
1061 .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1062 .priv_data_size = sizeof(RMDemuxContext),
1063 .read_close = rm_read_close,
1064 .flags = AVFMT_NOFILE,