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)
91 if (ff_get_extradata(avctx, pb, size) < 0)
92 return AVERROR(ENOMEM);
96 static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide)
101 for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) {
102 int len = wide ? avio_rb16(pb) : avio_r8(pb);
103 get_strl(pb, buf, sizeof(buf), len);
104 av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0);
108 RMStream *ff_rm_alloc_rmstream (void)
110 RMStream *rms = av_mallocz(sizeof(RMStream));
111 rms->curpic_num = -1;
115 void ff_rm_free_rmstream (RMStream *rms)
117 av_free_packet(&rms->pkt);
120 static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
121 AVStream *st, RMStream *ast, int read_all)
128 version = avio_rb16(pb); /* version */
130 unsigned bytes_per_minute;
131 int header_size = avio_rb16(pb);
132 int64_t startpos = avio_tell(pb);
134 bytes_per_minute = avio_rb16(pb);
136 rm_read_metadata(s, pb, 0);
137 if ((startpos + header_size) >= avio_tell(pb) + 2) {
138 // fourcc (should always be "lpcJ")
140 get_str8(pb, buf, sizeof(buf));
142 // Skip extra header crap (this should never happen)
143 if ((startpos + header_size) > avio_tell(pb))
144 avio_skip(pb, header_size + startpos - avio_tell(pb));
145 if (bytes_per_minute)
146 st->codec->bit_rate = 8LL * bytes_per_minute / 60;
147 st->codec->sample_rate = 8000;
148 st->codec->channels = 1;
149 st->codec->channel_layout = AV_CH_LAYOUT_MONO;
150 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
151 st->codec->codec_id = AV_CODEC_ID_RA_144;
152 ast->deint_id = DEINT_ID_INT0;
154 int flavor, sub_packet_h, coded_framesize, sub_packet_size;
155 int codecdata_length;
156 unsigned bytes_per_minute;
157 /* old version (4) */
158 avio_skip(pb, 2); /* unused */
159 avio_rb32(pb); /* .ra4 */
160 avio_rb32(pb); /* data size */
161 avio_rb16(pb); /* version2 */
162 avio_rb32(pb); /* header size */
163 flavor= avio_rb16(pb); /* add codec info / flavor */
164 ast->coded_framesize = coded_framesize = avio_rb32(pb); /* coded frame size */
165 avio_rb32(pb); /* ??? */
166 bytes_per_minute = avio_rb32(pb);
168 if (bytes_per_minute)
169 st->codec->bit_rate = 8LL * bytes_per_minute / 60;
171 avio_rb32(pb); /* ??? */
172 ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
173 st->codec->block_align= avio_rb16(pb); /* frame size */
174 ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
175 avio_rb16(pb); /* ??? */
177 avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
179 st->codec->sample_rate = avio_rb16(pb);
181 st->codec->channels = avio_rb16(pb);
183 ast->deint_id = avio_rl32(pb);
184 avio_read(pb, buf, 4);
188 get_str8(pb, buf, sizeof(buf)); /* desc */
189 ast->deint_id = AV_RL32(buf);
190 get_str8(pb, buf, sizeof(buf)); /* desc */
192 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
193 st->codec->codec_tag = AV_RL32(buf);
194 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
195 st->codec->codec_tag);
197 switch (st->codec->codec_id) {
198 case AV_CODEC_ID_AC3:
199 st->need_parsing = AVSTREAM_PARSE_FULL;
201 case AV_CODEC_ID_RA_288:
202 st->codec->extradata_size= 0;
203 ast->audio_framesize = st->codec->block_align;
204 st->codec->block_align = coded_framesize;
206 case AV_CODEC_ID_COOK:
207 st->need_parsing = AVSTREAM_PARSE_HEADERS;
208 case AV_CODEC_ID_ATRAC3:
209 case AV_CODEC_ID_SIPR:
211 codecdata_length = 0;
213 avio_rb16(pb); avio_r8(pb);
216 codecdata_length = avio_rb32(pb);
217 if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
218 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
223 ast->audio_framesize = st->codec->block_align;
224 if (st->codec->codec_id == AV_CODEC_ID_SIPR) {
226 av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
230 st->codec->block_align = ff_sipr_subpk_size[flavor];
232 if(sub_packet_size <= 0){
233 av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
236 st->codec->block_align = ast->sub_packet_size;
238 if ((ret = rm_read_extradata(pb, st->codec, codecdata_length)) < 0)
242 case AV_CODEC_ID_AAC:
243 avio_rb16(pb); avio_r8(pb);
246 codecdata_length = avio_rb32(pb);
247 if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
248 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
251 if (codecdata_length >= 1) {
253 if ((ret = rm_read_extradata(pb, st->codec, codecdata_length - 1)) < 0)
258 switch (ast->deint_id) {
260 if (ast->coded_framesize > ast->audio_framesize ||
262 ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
263 return AVERROR_INVALIDDATA;
264 if (ast->coded_framesize * sub_packet_h != 2*ast->audio_framesize) {
265 avpriv_request_sample(s, "mismatching interleaver parameters");
266 return AVERROR_INVALIDDATA;
270 if (ast->sub_packet_size <= 0 ||
271 ast->sub_packet_size > ast->audio_framesize)
272 return AVERROR_INVALIDDATA;
273 if (ast->audio_framesize % ast->sub_packet_size)
274 return AVERROR_INVALIDDATA;
282 av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id);
283 return AVERROR_INVALIDDATA;
285 if (ast->deint_id == DEINT_ID_INT4 ||
286 ast->deint_id == DEINT_ID_GENR ||
287 ast->deint_id == DEINT_ID_SIPR) {
288 if (st->codec->block_align <= 0 ||
289 ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
290 ast->audio_framesize * sub_packet_h < st->codec->block_align)
291 return AVERROR_INVALIDDATA;
292 if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
293 return AVERROR(ENOMEM);
300 rm_read_metadata(s, pb, 0);
307 ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVIOContext *pb,
308 AVStream *st, RMStream *rst, int codec_data_size, const uint8_t *mime)
315 avpriv_set_pts_info(st, 64, 1, 1000);
316 codec_pos = avio_tell(pb);
318 if (v == MKTAG(0xfd, 'a', 'r', '.')) {
320 if (rm_read_audio_stream_info(s, pb, st, rst, 0))
322 } else if (v == MKBETAG('L', 'S', 'D', ':')) {
323 avio_seek(pb, -4, SEEK_CUR);
324 if ((ret = rm_read_extradata(pb, st->codec, codec_data_size)) < 0)
327 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
328 st->codec->codec_tag = AV_RL32(st->codec->extradata);
329 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
330 st->codec->codec_tag);
331 } else if(mime && !strcmp(mime, "logical-fileinfo")){
332 int stream_count, rule_count, property_count, i;
333 ff_free_stream(s, st);
334 if (avio_rb16(pb) != 0) {
335 av_log(s, AV_LOG_WARNING, "Unsupported version\n");
338 stream_count = avio_rb16(pb);
339 avio_skip(pb, 6*stream_count);
340 rule_count = avio_rb16(pb);
341 avio_skip(pb, 2*rule_count);
342 property_count = avio_rb16(pb);
343 for(i=0; i<property_count; i++){
344 uint8_t name[128], val[128];
346 if (avio_rb16(pb) != 0) {
347 av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
348 goto skip; //FIXME skip just this one
350 get_str8(pb, name, sizeof(name));
351 switch(avio_rb32(pb)) {
352 case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
353 av_dict_set(&s->metadata, name, val, 0);
355 default: avio_skip(pb, avio_rb16(pb));
360 if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
362 av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
365 st->codec->codec_tag = avio_rl32(pb);
366 st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
367 st->codec->codec_tag);
368 av_dlog(s, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
369 if (st->codec->codec_id == AV_CODEC_ID_NONE)
371 st->codec->width = avio_rb16(pb);
372 st->codec->height = avio_rb16(pb);
373 avio_skip(pb, 2); // looks like bits per sample
374 avio_skip(pb, 4); // always zero?
375 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
376 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
379 if ((ret = rm_read_extradata(pb, st->codec, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
383 av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
384 0x10000, fps, (1 << 30) - 1);
385 #if FF_API_R_FRAME_RATE
386 st->r_frame_rate = st->avg_frame_rate;
388 } else if (s->error_recognition & AV_EF_EXPLODE) {
389 av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
390 return AVERROR_INVALIDDATA;
395 /* skip codec info */
396 size = avio_tell(pb) - codec_pos;
397 avio_skip(pb, codec_data_size - size);
402 /** this function assumes that the demuxer has already seeked to the start
403 * of the INDX chunk, and will bail out if not. */
404 static int rm_read_index(AVFormatContext *s)
406 AVIOContext *pb = s->pb;
407 unsigned int size, n_pkts, str_id, next_off, n, pos, pts;
411 if (avio_rl32(pb) != MKTAG('I','N','D','X'))
413 size = avio_rb32(pb);
417 n_pkts = avio_rb32(pb);
418 str_id = avio_rb16(pb);
419 next_off = avio_rb32(pb);
420 for (n = 0; n < s->nb_streams; n++)
421 if (s->streams[n]->id == str_id) {
425 if (n == s->nb_streams) {
426 av_log(s, AV_LOG_ERROR,
427 "Invalid stream index %d for index at pos %"PRId64"\n",
428 str_id, avio_tell(pb));
430 } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) {
431 av_log(s, AV_LOG_ERROR,
432 "Nr. of packets in packet index for stream index %d "
433 "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n",
434 str_id, avio_size(pb), avio_tell(pb),
435 (avio_size(pb) - avio_tell(pb)) / 14);
439 for (n = 0; n < n_pkts; n++) {
443 avio_skip(pb, 4); /* packet no. */
445 av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME);
449 if (next_off && avio_tell(pb) < next_off &&
450 avio_seek(pb, next_off, SEEK_SET) < 0) {
451 av_log(s, AV_LOG_ERROR,
452 "Non-linear index detected, not supported\n");
460 static int rm_read_header_old(AVFormatContext *s)
462 RMDemuxContext *rm = s->priv_data;
466 st = avformat_new_stream(s, NULL);
469 st->priv_data = ff_rm_alloc_rmstream();
470 return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
473 static int rm_read_header(AVFormatContext *s)
475 RMDemuxContext *rm = s->priv_data;
477 AVIOContext *pb = s->pb;
480 unsigned int start_time, duration;
481 unsigned int data_off = 0, indx_off = 0;
482 char buf[128], mime[128];
486 if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
487 /* very old .ra format */
488 return rm_read_header_old(s);
489 } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
493 tag_size = avio_rb32(pb);
494 avio_skip(pb, tag_size - 8);
500 tag_size = avio_rb32(pb);
502 av_dlog(s, "tag=%c%c%c%c (%08x) size=%d\n",
509 if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
512 case MKTAG('P', 'R', 'O', 'P'):
514 avio_rb32(pb); /* max bit rate */
515 avio_rb32(pb); /* avg bit rate */
516 avio_rb32(pb); /* max packet size */
517 avio_rb32(pb); /* avg packet size */
518 avio_rb32(pb); /* nb packets */
519 duration = avio_rb32(pb); /* duration */
520 s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
521 avio_rb32(pb); /* preroll */
522 indx_off = avio_rb32(pb); /* index offset */
523 data_off = avio_rb32(pb); /* data offset */
524 avio_rb16(pb); /* nb streams */
525 flags = avio_rb16(pb); /* flags */
527 case MKTAG('C', 'O', 'N', 'T'):
528 rm_read_metadata(s, pb, 1);
530 case MKTAG('M', 'D', 'P', 'R'):
531 st = avformat_new_stream(s, NULL);
533 return AVERROR(ENOMEM);
534 st->id = avio_rb16(pb);
535 avio_rb32(pb); /* max bit rate */
536 st->codec->bit_rate = avio_rb32(pb); /* bit rate */
537 avio_rb32(pb); /* max packet size */
538 avio_rb32(pb); /* avg packet size */
539 start_time = avio_rb32(pb); /* start time */
540 avio_rb32(pb); /* preroll */
541 duration = avio_rb32(pb); /* duration */
542 st->start_time = start_time;
543 st->duration = duration;
545 s->duration = AV_NOPTS_VALUE;
546 get_str8(pb, buf, sizeof(buf)); /* desc */
547 get_str8(pb, mime, sizeof(mime)); /* mimetype */
548 st->codec->codec_type = AVMEDIA_TYPE_DATA;
549 st->priv_data = ff_rm_alloc_rmstream();
550 if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
551 avio_rb32(pb), mime) < 0)
554 case MKTAG('D', 'A', 'T', 'A'):
557 /* unknown tag: skip it */
558 avio_skip(pb, tag_size - 10);
563 rm->nb_packets = avio_rb32(pb); /* number of packets */
564 if (!rm->nb_packets && (flags & 4))
565 rm->nb_packets = 3600 * 25;
566 avio_rb32(pb); /* next data header */
569 data_off = avio_tell(pb) - 18;
570 if (indx_off && pb->seekable && !(s->flags & AVFMT_FLAG_IGNIDX) &&
571 avio_seek(pb, indx_off, SEEK_SET) >= 0) {
573 avio_seek(pb, data_off + 18, SEEK_SET);
579 static int get_num(AVIOContext *pb, int *len)
591 return (n << 16) | n1;
595 /* multiple of 20 bytes for ra144 (ugly) */
596 #define RAW_PACKET_SIZE 1000
598 static int sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
599 RMDemuxContext *rm = s->priv_data;
600 AVIOContext *pb = s->pb;
602 uint32_t state=0xFFFFFFFF;
604 while(!url_feof(pb)){
606 *pos= avio_tell(pb) - 3;
607 if(rm->remaining_len > 0){
608 num= rm->current_stream;
609 len= rm->remaining_len;
610 *timestamp = AV_NOPTS_VALUE;
613 state= (state<<8) + avio_r8(pb);
615 if(state == MKBETAG('I', 'N', 'D', 'X')){
616 int n_pkts, expected_len;
619 n_pkts = avio_rb32(pb);
620 expected_len = 20 + n_pkts * 14;
622 /* some files don't add index entries to chunk size... */
624 else if (len != expected_len)
625 av_log(s, AV_LOG_WARNING,
626 "Index size %d (%d pkts) is wrong, should be %d.\n",
627 len, n_pkts, expected_len);
628 len -= 14; // we already read part of the index header
632 } else if (state == MKBETAG('D','A','T','A')) {
633 av_log(s, AV_LOG_WARNING,
634 "DATA tag in middle of chunk, file may be broken.\n");
637 if(state > (unsigned)0xFFFF || state <= 12)
643 *timestamp = avio_rb32(pb);
644 avio_r8(pb); /* reserved */
645 *flags = avio_r8(pb); /* flags */
647 for(i=0;i<s->nb_streams;i++) {
652 if (i == s->nb_streams) {
654 /* skip packet if unknown number */
656 rm->remaining_len = 0;
666 static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb,
667 RMDemuxContext *rm, RMStream *vst,
668 AVPacket *pkt, int len, int *pseq,
672 int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silcense compiler warning
676 hdr = avio_r8(pb); len--;
679 if(type != 3){ // not frame as a part of packet
680 seq = avio_r8(pb); len--;
682 if(type != 1){ // not whole frame
683 len2 = get_num(pb, &len);
684 pos = get_num(pb, &len);
685 pic_num = avio_r8(pb); len--;
688 av_log(s, AV_LOG_ERROR, "Insufficient data\n");
691 rm->remaining_len = len;
692 if(type&1){ // frame, not slice
693 if(type == 3){ // frame as a part of packet
697 if(rm->remaining_len < len) {
698 av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n");
701 rm->remaining_len -= len;
702 if(av_new_packet(pkt, len + 9) < 0)
705 AV_WL32(pkt->data + 1, 1);
706 AV_WL32(pkt->data + 5, 0);
707 if ((ret = avio_read(pb, pkt->data + 9, len)) != len) {
709 av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len);
710 return ret < 0 ? ret : AVERROR(EIO);
714 //now we have to deal with single slice
717 if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
718 if (len2 > ffio_limit(pb, len2)) {
719 av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n");
720 return AVERROR_INVALIDDATA;
722 vst->slices = ((hdr & 0x3F) << 1) + 1;
723 vst->videobufsize = len2 + 8*vst->slices + 1;
724 av_free_packet(&vst->pkt); //FIXME this should be output.
725 if(av_new_packet(&vst->pkt, vst->videobufsize) < 0)
726 return AVERROR(ENOMEM);
727 memset(vst->pkt.data, 0, vst->pkt.size);
728 vst->videobufpos = 8*vst->slices + 1;
730 vst->curpic_num = pic_num;
731 vst->pktpos = avio_tell(pb);
734 len = FFMIN(len, pos);
736 if(++vst->cur_slice > vst->slices) {
737 av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice);
741 return AVERROR(ENOMEM);
742 AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1);
743 AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
744 if(vst->videobufpos + len > vst->videobufsize) {
745 av_log(s, AV_LOG_ERROR, "outside videobufsize\n");
748 if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len)
750 vst->videobufpos += len;
751 rm->remaining_len-= len;
753 if (type == 2 || vst->videobufpos == vst->videobufsize) {
754 vst->pkt.data[0] = vst->cur_slice-1;
759 #if FF_API_DESTRUCT_PACKET
760 FF_DISABLE_DEPRECATION_WARNINGS
761 vst->pkt.destruct = NULL;
762 FF_ENABLE_DEPRECATION_WARNINGS
764 if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin
765 memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices,
766 vst->videobufpos - 1 - 8*vst->slices);
767 pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices);
768 pkt->pts = AV_NOPTS_VALUE;
769 pkt->pos = vst->pktpos;
778 rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
783 if (st->codec->codec_id == AV_CODEC_ID_AC3) {
785 for (j=0;j<pkt->size;j+=2) {
786 FFSWAP(int, ptr[0], ptr[1]);
792 static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) {
793 int ret = avio_read(pb, dst, n);
795 if (ret >= 0) memset(dst + ret, 0, n - ret);
796 else memset(dst , 0, n);
797 av_log(s, AV_LOG_ERROR, "Failed to fully read block\n");
803 ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb,
804 AVStream *st, RMStream *ast, int len, AVPacket *pkt,
805 int *seq, int flags, int64_t timestamp)
807 RMDemuxContext *rm = s->priv_data;
810 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
811 rm->current_stream= st->id;
812 ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, ×tamp);
814 return ret < 0 ? ret : -1; //got partial frame or error
815 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
816 if ((ast->deint_id == DEINT_ID_GENR) ||
817 (ast->deint_id == DEINT_ID_INT4) ||
818 (ast->deint_id == DEINT_ID_SIPR)) {
820 int sps = ast->sub_packet_size;
821 int cfs = ast->coded_framesize;
822 int h = ast->sub_packet_h;
823 int y = ast->sub_packet_cnt;
824 int w = ast->audio_framesize;
827 y = ast->sub_packet_cnt = 0;
829 ast->audiotimestamp = timestamp;
831 switch (ast->deint_id) {
833 for (x = 0; x < h/2; x++)
834 readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs);
837 for (x = 0; x < w/sps; x++)
838 readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
841 readfull(s, pb, ast->pkt.data + y * w, w);
845 if (++(ast->sub_packet_cnt) < h)
847 if (ast->deint_id == DEINT_ID_SIPR)
848 ff_rm_reorder_sipr_data(ast->pkt.data, h, w);
850 ast->sub_packet_cnt = 0;
851 rm->audio_stream_num = st->index;
852 rm->audio_pkt_cnt = h * w / st->codec->block_align;
853 } else if ((ast->deint_id == DEINT_ID_VBRF) ||
854 (ast->deint_id == DEINT_ID_VBRS)) {
856 rm->audio_stream_num = st->index;
857 ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4;
858 if (ast->sub_packet_cnt) {
859 for (x = 0; x < ast->sub_packet_cnt; x++)
860 ast->sub_packet_lengths[x] = avio_rb16(pb);
861 rm->audio_pkt_cnt = ast->sub_packet_cnt;
862 ast->audiotimestamp = timestamp;
866 av_get_packet(pb, pkt, len);
867 rm_ac3_swap_bytes(st, pkt);
870 av_get_packet(pb, pkt, len);
872 pkt->stream_index = st->index;
875 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
876 if(st->codec->codec_id == AV_CODEC_ID_RV20){
877 int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1);
878 av_log(s, AV_LOG_DEBUG, "%d %"PRId64" %d\n", *timestamp, *timestamp*512LL/25, seq);
880 seq |= (timestamp&~0x3FFF);
881 if(seq - timestamp > 0x2000) seq -= 0x4000;
882 if(seq - timestamp < -0x2000) seq += 0x4000;
887 pkt->pts = timestamp;
889 pkt->flags |= AV_PKT_FLAG_KEY;
891 return st->codec->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
895 ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb,
896 AVStream *st, RMStream *ast, AVPacket *pkt)
898 RMDemuxContext *rm = s->priv_data;
900 av_assert0 (rm->audio_pkt_cnt > 0);
902 if (ast->deint_id == DEINT_ID_VBRF ||
903 ast->deint_id == DEINT_ID_VBRS)
904 av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
906 if(av_new_packet(pkt, st->codec->block_align) < 0)
907 return AVERROR(ENOMEM);
908 memcpy(pkt->data, ast->pkt.data + st->codec->block_align * //FIXME avoid this
909 (ast->sub_packet_h * ast->audio_framesize / st->codec->block_align - rm->audio_pkt_cnt),
910 st->codec->block_align);
913 if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) {
914 ast->audiotimestamp = AV_NOPTS_VALUE;
915 pkt->flags = AV_PKT_FLAG_KEY;
918 pkt->stream_index = st->index;
920 return rm->audio_pkt_cnt;
923 static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
925 RMDemuxContext *rm = s->priv_data;
926 AVStream *st = NULL; // init to silence compiler warning
927 int i, len, res, seq = 1;
928 int64_t timestamp, pos;
932 if (rm->audio_pkt_cnt) {
933 // If there are queued audio packet return them first
934 st = s->streams[rm->audio_stream_num];
935 res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
940 if (rm->old_format) {
945 timestamp = AV_NOPTS_VALUE;
946 len = !ast->audio_framesize ? RAW_PACKET_SIZE :
947 ast->coded_framesize * ast->sub_packet_h / 2;
948 flags = (seq++ == 1) ? 2 : 0;
949 pos = avio_tell(s->pb);
951 len=sync(s, ×tamp, &flags, &i, &pos);
956 if(len<0 || url_feof(s->pb))
959 res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
960 &seq, flags, timestamp);
963 if((flags&2) && (seq&0x7F) == 1)
964 av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
969 if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
970 || st->discard >= AVDISCARD_ALL){
979 static int rm_read_close(AVFormatContext *s)
983 for (i=0;i<s->nb_streams;i++)
984 ff_rm_free_rmstream(s->streams[i]->priv_data);
989 static int rm_probe(AVProbeData *p)
991 /* check file header */
992 if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
993 p->buf[2] == 'M' && p->buf[3] == 'F' &&
994 p->buf[4] == 0 && p->buf[5] == 0) ||
995 (p->buf[0] == '.' && p->buf[1] == 'r' &&
996 p->buf[2] == 'a' && p->buf[3] == 0xfd))
997 return AVPROBE_SCORE_MAX;
1002 static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
1003 int64_t *ppos, int64_t pos_limit)
1005 RMDemuxContext *rm = s->priv_data;
1007 int stream_index2, flags, len, h;
1012 return AV_NOPTS_VALUE;
1014 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1015 return AV_NOPTS_VALUE;
1017 rm->remaining_len=0;
1022 len=sync(s, &dts, &flags, &stream_index2, &pos);
1024 return AV_NOPTS_VALUE;
1026 st = s->streams[stream_index2];
1027 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1028 h= avio_r8(s->pb); len--;
1030 seq = avio_r8(s->pb); len--;
1034 if((flags&2) && (seq&0x7F) == 1){
1035 av_dlog(s, "%d %d-%d %"PRId64" %d\n",
1036 flags, stream_index2, stream_index, dts, seq);
1037 av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
1038 if(stream_index2 == stream_index)
1042 avio_skip(s->pb, len);
1048 static int rm_read_seek(AVFormatContext *s, int stream_index,
1049 int64_t pts, int flags)
1051 RMDemuxContext *rm = s->priv_data;
1053 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1055 rm->audio_pkt_cnt = 0;
1060 AVInputFormat ff_rm_demuxer = {
1062 .long_name = NULL_IF_CONFIG_SMALL("RealMedia"),
1063 .priv_data_size = sizeof(RMDemuxContext),
1064 .read_probe = rm_probe,
1065 .read_header = rm_read_header,
1066 .read_packet = rm_read_packet,
1067 .read_close = rm_read_close,
1068 .read_timestamp = rm_read_dts,
1069 .read_seek = rm_read_seek,
1072 AVInputFormat ff_rdt_demuxer = {
1074 .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"),
1075 .priv_data_size = sizeof(RMDemuxContext),
1076 .read_close = rm_read_close,
1077 .flags = AVFMT_NOFILE,