All non zero returns of rm_assemble_video_frame() are errors, check things
[libav.git] / libavformat / rmdec.c
CommitLineData
de6d9b64 1/*
7b2a2ce5 2 * "Real" compatible demuxer.
19720f15 3 * Copyright (c) 2000, 2001 Fabrice Bellard.
de6d9b64 4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
19720f15
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
de6d9b64 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
de6d9b64 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19720f15
FB
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
de6d9b64 16 *
19720f15 17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
de6d9b64 20 */
245976da
DB
21
22#include "libavutil/avstring.h"
de6d9b64 23#include "avformat.h"
ba614729 24#include "rm.h"
1edddc99 25
ba614729 26struct RMStream {
1edddc99
RB
27 uint8_t *videobuf; ///< place to store merged video frame
28 int videobufsize; ///< current assembled frame size
29 int videobufpos; ///< position for the next slice in the video buffer
30 int curpic_num; ///< picture number of current frame
31 int cur_slice, slices;
32 int64_t pktpos; ///< first slice position in file
33 /// Audio descrambling matrix parameters
34 uint8_t *audiobuf; ///< place to store reordered audio data
35 int64_t audiotimestamp; ///< Audio packet timestamp
36 int sub_packet_cnt; // Subpacket counter, used while reading
37 int sub_packet_size, sub_packet_h, coded_framesize; ///< Descrambling parameters from container
ba614729
RB
38 int audio_framesize; /// Audio frame size from container
39 int sub_packet_lengths[16]; /// Length of each subpacket
40};
41
42typedef struct {
43 int nb_packets;
44 int old_format;
45 int current_stream;
46 int remaining_len;
1edddc99
RB
47 int audio_stream_num; ///< Stream number for audio packets
48 int audio_pkt_cnt; ///< Output packet counter
1edddc99 49} RMDemuxContext;
de6d9b64 50
36cf20f5 51static inline void get_strl(ByteIOContext *pb, char *buf, int buf_size, int len)
de6d9b64 52{
36cf20f5 53 int i;
28263f5f 54 char *q, r;
de6d9b64 55
de6d9b64
FB
56 q = buf;
57 for(i=0;i<len;i++) {
28263f5f 58 r = get_byte(pb);
de6d9b64 59 if (i < buf_size - 1)
28263f5f 60 *q++ = r;
de6d9b64 61 }
28263f5f 62 if (buf_size > 0) *q = '\0';
de6d9b64
FB
63}
64
36cf20f5 65static void get_str16(ByteIOContext *pb, char *buf, int buf_size)
de6d9b64 66{
36cf20f5
RB
67 get_strl(pb, buf, buf_size, get_be16(pb));
68}
de6d9b64 69
36cf20f5
RB
70static void get_str8(ByteIOContext *pb, char *buf, int buf_size)
71{
72 get_strl(pb, buf, buf_size, get_byte(pb));
de6d9b64
FB
73}
74
ba614729
RB
75RMStream *ff_rm_alloc_rmstream (void)
76{
77 RMStream *rms = av_mallocz(sizeof(RMStream));
78 rms->curpic_num = -1;
79 return rms;
80}
81
82void ff_rm_free_rmstream (RMStream *rms)
83{
7d204e67
RD
84 av_freep(&rms->videobuf);
85 av_freep(&rms->audiobuf);
ba614729
RB
86}
87
fcc995a5 88static int rm_read_audio_stream_info(AVFormatContext *s, ByteIOContext *pb,
886e89d0 89 AVStream *st, RMStream *ast, int read_all)
c9510803 90{
1e4668d1 91 char buf[256];
c9510803 92 uint32_t version;
c9510803
FB
93
94 /* ra type header */
95 version = get_be32(pb); /* version */
96 if (((version >> 16) & 0xff) == 3) {
1e4668d1 97 int64_t startpos = url_ftell(pb);
b9b2b8c9 98 url_fskip(pb, 14);
c9510803
FB
99 get_str8(pb, s->title, sizeof(s->title));
100 get_str8(pb, s->author, sizeof(s->author));
101 get_str8(pb, s->copyright, sizeof(s->copyright));
102 get_str8(pb, s->comment, sizeof(s->comment));
1e4668d1 103 if ((startpos + (version & 0xffff)) >= url_ftell(pb) + 2) {
76f940b2
RB
104 // fourcc (should always be "lpcJ")
105 get_byte(pb);
106 get_str8(pb, buf, sizeof(buf));
1e4668d1
RT
107 }
108 // Skip extra header crap (this should never happen)
109 if ((startpos + (version & 0xffff)) > url_ftell(pb))
110 url_fskip(pb, (version & 0xffff) + startpos - url_ftell(pb));
01f4895c
MN
111 st->codec->sample_rate = 8000;
112 st->codec->channels = 1;
113 st->codec->codec_type = CODEC_TYPE_AUDIO;
114 st->codec->codec_id = CODEC_ID_RA_144;
c9510803 115 } else {
e0f7e329 116 int flavor, sub_packet_h, coded_framesize, sub_packet_size;
c9510803
FB
117 /* old version (4) */
118 get_be32(pb); /* .ra4 */
72aef198
MN
119 get_be32(pb); /* data size */
120 get_be16(pb); /* version2 */
c9510803 121 get_be32(pb); /* header size */
72aef198 122 flavor= get_be16(pb); /* add codec info / flavor */
ba614729 123 ast->coded_framesize = coded_framesize = get_be32(pb); /* coded frame size */
c9510803
FB
124 get_be32(pb); /* ??? */
125 get_be32(pb); /* ??? */
126 get_be32(pb); /* ??? */
ba614729 127 ast->sub_packet_h = sub_packet_h = get_be16(pb); /* 1 */
01f4895c 128 st->codec->block_align= get_be16(pb); /* frame size */
ba614729 129 ast->sub_packet_size = sub_packet_size = get_be16(pb); /* sub packet size */
72aef198 130 get_be16(pb); /* ??? */
e0f7e329 131 if (((version >> 16) & 0xff) == 5) {
127ed7b0
RB
132 get_be16(pb); get_be16(pb); get_be16(pb);
133 }
01f4895c 134 st->codec->sample_rate = get_be16(pb);
c9510803 135 get_be32(pb);
01f4895c 136 st->codec->channels = get_be16(pb);
e0f7e329
BL
137 if (((version >> 16) & 0xff) == 5) {
138 get_be32(pb);
b9b2b8c9 139 get_buffer(pb, buf, 4);
bb270c08
DB
140 buf[4] = 0;
141 } else {
e344c1ea
SH
142 get_str8(pb, buf, sizeof(buf)); /* desc */
143 get_str8(pb, buf, sizeof(buf)); /* desc */
bb270c08 144 }
01f4895c 145 st->codec->codec_type = CODEC_TYPE_AUDIO;
c9510803 146 if (!strcmp(buf, "dnet")) {
01f4895c 147 st->codec->codec_id = CODEC_ID_AC3;
bf415121 148 st->need_parsing = AVSTREAM_PARSE_FULL;
72aef198 149 } else if (!strcmp(buf, "28_8")) {
01f4895c 150 st->codec->codec_id = CODEC_ID_RA_288;
e0f7e329 151 st->codec->extradata_size= 0;
ba614729 152 ast->audio_framesize = st->codec->block_align;
e0f7e329 153 st->codec->block_align = coded_framesize;
a443a253 154
ba614729
RB
155 if(ast->audio_framesize >= UINT_MAX / sub_packet_h){
156 av_log(s, AV_LOG_ERROR, "ast->audio_framesize * sub_packet_h too large\n");
a443a253
MN
157 return -1;
158 }
159
ba614729 160 ast->audiobuf = av_malloc(ast->audio_framesize * sub_packet_h);
2426bb96 161 } else if ((!strcmp(buf, "cook")) || (!strcmp(buf, "atrc")) || (!strcmp(buf, "sipr"))) {
b9b2b8c9 162 int codecdata_length;
e0f7e329
BL
163 get_be16(pb); get_byte(pb);
164 if (((version >> 16) & 0xff) == 5)
165 get_byte(pb);
166 codecdata_length = get_be32(pb);
a443a253
MN
167 if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
168 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
169 return -1;
170 }
171
f23938f5
MN
172 if(sub_packet_size <= 0){
173 av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
174 return -1;
175 }
176
10e26bc7 177 if (!strcmp(buf, "cook")) st->codec->codec_id = CODEC_ID_COOK;
2426bb96 178 else if (!strcmp(buf, "sipr")) st->codec->codec_id = CODEC_ID_SIPR;
10e26bc7 179 else st->codec->codec_id = CODEC_ID_ATRAC3;
e0f7e329 180 st->codec->extradata_size= codecdata_length;
d76319b1 181 st->codec->extradata= av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
b9b2b8c9 182 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
ba614729
RB
183 ast->audio_framesize = st->codec->block_align;
184 st->codec->block_align = ast->sub_packet_size;
a443a253 185
ba614729 186 if(ast->audio_framesize >= UINT_MAX / sub_packet_h){
a443a253
MN
187 av_log(s, AV_LOG_ERROR, "rm->audio_framesize * sub_packet_h too large\n");
188 return -1;
189 }
190
ba614729 191 ast->audiobuf = av_malloc(ast->audio_framesize * sub_packet_h);
a194f595 192 } else if (!strcmp(buf, "raac") || !strcmp(buf, "racp")) {
b9b2b8c9 193 int codecdata_length;
a194f595
RT
194 get_be16(pb); get_byte(pb);
195 if (((version >> 16) & 0xff) == 5)
196 get_byte(pb);
197 st->codec->codec_id = CODEC_ID_AAC;
198 codecdata_length = get_be32(pb);
a9d4a6ef
RT
199 if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
200 av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
201 return -1;
202 }
a194f595
RT
203 if (codecdata_length >= 1) {
204 st->codec->extradata_size = codecdata_length - 1;
205 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
206 get_byte(pb);
b9b2b8c9 207 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
a194f595 208 }
c9510803 209 } else {
01f4895c 210 st->codec->codec_id = CODEC_ID_NONE;
75e61b0e 211 av_strlcpy(st->codec->codec_name, buf, sizeof(st->codec->codec_name));
c9510803
FB
212 }
213 if (read_all) {
214 get_byte(pb);
215 get_byte(pb);
216 get_byte(pb);
115329f1 217
c9510803
FB
218 get_str8(pb, s->title, sizeof(s->title));
219 get_str8(pb, s->author, sizeof(s->author));
220 get_str8(pb, s->copyright, sizeof(s->copyright));
221 get_str8(pb, s->comment, sizeof(s->comment));
222 }
223 }
a9d4a6ef 224 return 0;
c9510803
FB
225}
226
0fd36362 227int
fcc995a5 228ff_rm_read_mdpr_codecdata (AVFormatContext *s, ByteIOContext *pb,
886e89d0 229 AVStream *st, RMStream *rst, int codec_data_size)
ff1463dc 230{
ff1463dc 231 unsigned int v;
79d5045d 232 int size;
ff1463dc
RB
233 int64_t codec_pos;
234
15995030 235 av_set_pts_info(st, 64, 1, 1000);
ff1463dc
RB
236 codec_pos = url_ftell(pb);
237 v = get_be32(pb);
238 if (v == MKTAG(0xfd, 'a', 'r', '.')) {
239 /* ra type header */
886e89d0 240 if (rm_read_audio_stream_info(s, pb, st, rst, 0))
ff1463dc
RB
241 return -1;
242 } else {
243 int fps, fps2;
244 if (get_le32(pb) != MKTAG('V', 'I', 'D', 'O')) {
245 fail1:
246 av_log(st->codec, AV_LOG_ERROR, "Unsupported video codec\n");
247 goto skip;
248 }
249 st->codec->codec_tag = get_le32(pb);
250// av_log(NULL, AV_LOG_DEBUG, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
251 if ( st->codec->codec_tag != MKTAG('R', 'V', '1', '0')
252 && st->codec->codec_tag != MKTAG('R', 'V', '2', '0')
253 && st->codec->codec_tag != MKTAG('R', 'V', '3', '0')
b93dd838
VS
254 && st->codec->codec_tag != MKTAG('R', 'V', '4', '0')
255 && st->codec->codec_tag != MKTAG('R', 'V', 'T', 'R'))
ff1463dc
RB
256 goto fail1;
257 st->codec->width = get_be16(pb);
258 st->codec->height = get_be16(pb);
259 st->codec->time_base.num= 1;
260 fps= get_be16(pb);
261 st->codec->codec_type = CODEC_TYPE_VIDEO;
262 get_be32(pb);
263 fps2= get_be16(pb);
264 get_be16(pb);
265
266 st->codec->extradata_size= codec_data_size - (url_ftell(pb) - codec_pos);
267
268 if(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)st->codec->extradata_size){
269 //check is redundant as get_buffer() will catch this
270 av_log(s, AV_LOG_ERROR, "st->codec->extradata_size too large\n");
271 return -1;
272 }
273 st->codec->extradata= av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
437fd77b
PI
274 if (!st->codec->extradata)
275 return AVERROR(ENOMEM);
ff1463dc
RB
276 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
277
278// av_log(NULL, AV_LOG_DEBUG, "fps= %d fps2= %d\n", fps, fps2);
279 st->codec->time_base.den = fps * st->codec->time_base.num;
280 switch(((uint8_t*)st->codec->extradata)[4]>>4){
281 case 1: st->codec->codec_id = CODEC_ID_RV10; break;
282 case 2: st->codec->codec_id = CODEC_ID_RV20; break;
283 case 3: st->codec->codec_id = CODEC_ID_RV30; break;
284 case 4: st->codec->codec_id = CODEC_ID_RV40; break;
285 default: goto fail1;
286 }
287 }
288
ff1463dc
RB
289skip:
290 /* skip codec info */
291 size = url_ftell(pb) - codec_pos;
292 url_fskip(pb, codec_data_size - size);
293
36c9e40a 294 return 0;
ff1463dc
RB
295}
296
297
c9510803
FB
298static int rm_read_header_old(AVFormatContext *s, AVFormatParameters *ap)
299{
1edddc99 300 RMDemuxContext *rm = s->priv_data;
c9510803
FB
301 AVStream *st;
302
303 rm->old_format = 1;
304 st = av_new_stream(s, 0);
305 if (!st)
a9d4a6ef 306 return -1;
886e89d0
RB
307 st->priv_data = ff_rm_alloc_rmstream();
308 return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
c9510803
FB
309}
310
de6d9b64
FB
311static int rm_read_header(AVFormatContext *s, AVFormatParameters *ap)
312{
1edddc99 313 RMDemuxContext *rm = s->priv_data;
de6d9b64 314 AVStream *st;
899681cd 315 ByteIOContext *pb = s->pb;
ff1463dc 316 unsigned int tag;
07cb073b 317 int tag_size;
36c32bdd 318 unsigned int start_time, duration;
de6d9b64 319 char buf[128];
5d6ef63f 320 int flags = 0;
de6d9b64 321
c9510803
FB
322 tag = get_le32(pb);
323 if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
324 /* very old .ra format */
325 return rm_read_header_old(s, ap);
326 } else if (tag != MKTAG('.', 'R', 'M', 'F')) {
6f3e0b21 327 return AVERROR(EIO);
c9510803 328 }
de6d9b64
FB
329
330 get_be32(pb); /* header size */
331 get_be16(pb);
332 get_be32(pb);
333 get_be32(pb); /* number of headers */
115329f1 334
de6d9b64
FB
335 for(;;) {
336 if (url_feof(pb))
ccafd472 337 return -1;
de6d9b64
FB
338 tag = get_le32(pb);
339 tag_size = get_be32(pb);
340 get_be16(pb);
341#if 0
115329f1 342 printf("tag=%c%c%c%c (%08x) size=%d\n",
de6d9b64
FB
343 (tag) & 0xff,
344 (tag >> 8) & 0xff,
345 (tag >> 16) & 0xff,
346 (tag >> 24) & 0xff,
347 tag,
348 tag_size);
349#endif
9786bd4d 350 if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
ccafd472 351 return -1;
de6d9b64
FB
352 switch(tag) {
353 case MKTAG('P', 'R', 'O', 'P'):
354 /* file header */
355 get_be32(pb); /* max bit rate */
356 get_be32(pb); /* avg bit rate */
357 get_be32(pb); /* max packet size */
358 get_be32(pb); /* avg packet size */
359 get_be32(pb); /* nb packets */
360 get_be32(pb); /* duration */
361 get_be32(pb); /* preroll */
362 get_be32(pb); /* index offset */
363 get_be32(pb); /* data offset */
364 get_be16(pb); /* nb streams */
5d6ef63f 365 flags = get_be16(pb); /* flags */
de6d9b64
FB
366 break;
367 case MKTAG('C', 'O', 'N', 'T'):
36cf20f5
RB
368 get_str16(pb, s->title, sizeof(s->title));
369 get_str16(pb, s->author, sizeof(s->author));
370 get_str16(pb, s->copyright, sizeof(s->copyright));
371 get_str16(pb, s->comment, sizeof(s->comment));
de6d9b64
FB
372 break;
373 case MKTAG('M', 'D', 'P', 'R'):
247eadca 374 st = av_new_stream(s, 0);
de6d9b64 375 if (!st)
ccafd472 376 return AVERROR(ENOMEM);
de6d9b64
FB
377 st->id = get_be16(pb);
378 get_be32(pb); /* max bit rate */
01f4895c 379 st->codec->bit_rate = get_be32(pb); /* bit rate */
de6d9b64
FB
380 get_be32(pb); /* max packet size */
381 get_be32(pb); /* avg packet size */
247eadca 382 start_time = get_be32(pb); /* start time */
de6d9b64 383 get_be32(pb); /* preroll */
247eadca 384 duration = get_be32(pb); /* duration */
c0df9d75
MN
385 st->start_time = start_time;
386 st->duration = duration;
de6d9b64
FB
387 get_str8(pb, buf, sizeof(buf)); /* desc */
388 get_str8(pb, buf, sizeof(buf)); /* mimetype */
01f4895c 389 st->codec->codec_type = CODEC_TYPE_DATA;
886e89d0
RB
390 st->priv_data = ff_rm_alloc_rmstream();
391 if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
392 get_be32(pb)) < 0)
ff1463dc 393 return -1;
de6d9b64
FB
394 break;
395 case MKTAG('D', 'A', 'T', 'A'):
396 goto header_end;
397 default:
398 /* unknown tag: skip it */
399 url_fskip(pb, tag_size - 10);
400 break;
401 }
402 }
403 header_end:
404 rm->nb_packets = get_be32(pb); /* number of packets */
5d6ef63f
PG
405 if (!rm->nb_packets && (flags & 4))
406 rm->nb_packets = 3600 * 25;
de6d9b64
FB
407 get_be32(pb); /* next data header */
408 return 0;
de6d9b64
FB
409}
410
4c2bc159
MN
411static int get_num(ByteIOContext *pb, int *len)
412{
413 int n, n1;
414
415 n = get_be16(pb);
416 (*len)-=2;
e3052ce7 417 n &= 0x7FFF;
4c2bc159
MN
418 if (n >= 0x4000) {
419 return n - 0x4000;
420 } else {
421 n1 = get_be16(pb);
422 (*len)-=2;
423 return (n << 16) | n1;
424 }
425}
426
c9510803
FB
427/* multiple of 20 bytes for ra144 (ugly) */
428#define RAW_PACKET_SIZE 1000
429
37e85dac 430static int sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
1edddc99 431 RMDemuxContext *rm = s->priv_data;
899681cd 432 ByteIOContext *pb = s->pb;
bc17df09
MN
433 int len, num, res, i;
434 AVStream *st;
119cebf4 435 uint32_t state=0xFFFFFFFF;
bc17df09
MN
436
437 while(!url_feof(pb)){
fd31550d 438 *pos= url_ftell(pb) - 3;
bc17df09
MN
439 if(rm->remaining_len > 0){
440 num= rm->current_stream;
441 len= rm->remaining_len;
442 *timestamp = AV_NOPTS_VALUE;
443 *flags= 0;
444 }else{
119cebf4 445 state= (state<<8) + get_byte(pb);
115329f1 446
119cebf4
MN
447 if(state == MKBETAG('I', 'N', 'D', 'X')){
448 len = get_be16(pb) - 6;
449 if(len<0)
450 continue;
451 goto skip;
452 }
115329f1 453
119cebf4 454 if(state > (unsigned)0xFFFF || state < 12)
bc17df09 455 continue;
119cebf4
MN
456 len=state;
457 state= 0xFFFFFFFF;
458
bc17df09
MN
459 num = get_be16(pb);
460 *timestamp = get_be32(pb);
461 res= get_byte(pb); /* reserved */
462 *flags = get_byte(pb); /* flags */
37e85dac 463
115329f1 464
bc17df09
MN
465 len -= 12;
466 }
467 for(i=0;i<s->nb_streams;i++) {
468 st = s->streams[i];
469 if (num == st->id)
470 break;
471 }
472 if (i == s->nb_streams) {
119cebf4 473skip:
bc17df09
MN
474 /* skip packet if unknown number */
475 url_fskip(pb, len);
476 rm->remaining_len -= len;
477 continue;
478 }
479 *stream_index= i;
115329f1 480
bc17df09
MN
481 return len;
482 }
483 return -1;
484}
485
fcc995a5 486static int rm_assemble_video_frame(AVFormatContext *s, ByteIOContext *pb,
ba614729
RB
487 RMDemuxContext *rm, RMStream *vst,
488 AVPacket *pkt, int len)
383b123e 489{
383b123e
KS
490 int hdr, seq, pic_num, len2, pos;
491 int type;
383b123e
KS
492
493 hdr = get_byte(pb); len--;
494 type = hdr >> 6;
495 switch(type){
496 case 0: // slice
497 case 2: // last slice
498 seq = get_byte(pb); len--;
499 len2 = get_num(pb, &len);
500 pos = get_num(pb, &len);
501 pic_num = get_byte(pb); len--;
502 rm->remaining_len = len;
503 break;
504 case 1: //whole frame
505 seq = get_byte(pb); len--;
506 if(av_new_packet(pkt, len + 9) < 0)
507 return AVERROR(EIO);
508 pkt->data[0] = 0;
509 AV_WL32(pkt->data + 1, 1);
510 AV_WL32(pkt->data + 5, 0);
511 get_buffer(pb, pkt->data + 9, len);
512 rm->remaining_len = 0;
513 return 0;
514 case 3: //frame as a part of packet
515 len2 = get_num(pb, &len);
516 pos = get_num(pb, &len);
517 pic_num = get_byte(pb); len--;
518 rm->remaining_len = len - len2;
519 if(av_new_packet(pkt, len2 + 9) < 0)
520 return AVERROR(EIO);
521 pkt->data[0] = 0;
522 AV_WL32(pkt->data + 1, 1);
523 AV_WL32(pkt->data + 5, 0);
524 get_buffer(pb, pkt->data + 9, len2);
525 return 0;
526 }
527 //now we have to deal with single slice
528
ba614729
RB
529 if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
530 vst->slices = ((hdr & 0x3F) << 1) + 1;
531 vst->videobufsize = len2 + 8*vst->slices + 1;
532 av_free(vst->videobuf);
533 if(!(vst->videobuf = av_malloc(vst->videobufsize)))
52537534 534 return AVERROR(ENOMEM);
ba614729
RB
535 vst->videobufpos = 8*vst->slices + 1;
536 vst->cur_slice = 0;
537 vst->curpic_num = pic_num;
538 vst->pktpos = url_ftell(pb);
383b123e 539 }
e35033e6 540 if(type == 2)
383b123e 541 len = FFMIN(len, pos);
383b123e 542
ba614729 543 if(++vst->cur_slice > vst->slices)
383b123e 544 return 1;
ba614729
RB
545 AV_WL32(vst->videobuf - 7 + 8*vst->cur_slice, 1);
546 AV_WL32(vst->videobuf - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
547 if(vst->videobufpos + len > vst->videobufsize)
383b123e 548 return 1;
ba614729 549 if (get_buffer(pb, vst->videobuf + vst->videobufpos, len) != len)
383b123e 550 return AVERROR(EIO);
ba614729 551 vst->videobufpos += len;
383b123e
KS
552 rm->remaining_len-= len;
553
ba614729
RB
554 if(type == 2 || (vst->videobufpos) == vst->videobufsize){
555 vst->videobuf[0] = vst->cur_slice-1;
556 if(av_new_packet(pkt, vst->videobufpos - 8*(vst->slices - vst->cur_slice)) < 0)
383b123e 557 return AVERROR(ENOMEM);
ba614729
RB
558 memcpy(pkt->data, vst->videobuf, 1 + 8*vst->cur_slice);
559 memcpy(pkt->data + 1 + 8*vst->cur_slice, vst->videobuf + 1 + 8*vst->slices,
560 vst->videobufpos - 1 - 8*vst->slices);
d447fc31 561 pkt->pts = AV_NOPTS_VALUE;
ba614729 562 pkt->pos = vst->pktpos;
383b123e
KS
563 return 0;
564 }
565
566 return 1;
567}
568
5c470b91
RB
569static inline void
570rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt)
571{
572 uint8_t *ptr;
573 int j;
574
575 if (st->codec->codec_id == CODEC_ID_AC3) {
576 ptr = pkt->data;
577 for (j=0;j<pkt->size;j+=2) {
578 FFSWAP(int, ptr[0], ptr[1]);
579 ptr += 2;
580 }
581 }
582}
583
0fd36362 584int
fcc995a5 585ff_rm_parse_packet (AVFormatContext *s, ByteIOContext *pb,
886e89d0 586 AVStream *st, RMStream *ast, int len, AVPacket *pkt,
afd302fa
RB
587 int *seq, int *flags, int64_t *timestamp)
588{
1edddc99 589 RMDemuxContext *rm = s->priv_data;
afd302fa
RB
590
591 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
592 rm->current_stream= st->id;
51d6852f 593 if(rm_assemble_video_frame(s, pb, rm, ast, pkt, len))
afd302fa
RB
594 return -1; //got partial frame
595 } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
596 if ((st->codec->codec_id == CODEC_ID_RA_288) ||
597 (st->codec->codec_id == CODEC_ID_COOK) ||
2426bb96
BL
598 (st->codec->codec_id == CODEC_ID_ATRAC3) ||
599 (st->codec->codec_id == CODEC_ID_SIPR)) {
afd302fa 600 int x;
ba614729
RB
601 int sps = ast->sub_packet_size;
602 int cfs = ast->coded_framesize;
603 int h = ast->sub_packet_h;
604 int y = ast->sub_packet_cnt;
605 int w = ast->audio_framesize;
afd302fa
RB
606
607 if (*flags & 2)
ba614729 608 y = ast->sub_packet_cnt = 0;
afd302fa 609 if (!y)
ba614729 610 ast->audiotimestamp = *timestamp;
afd302fa
RB
611
612 switch(st->codec->codec_id) {
613 case CODEC_ID_RA_288:
614 for (x = 0; x < h/2; x++)
ba614729 615 get_buffer(pb, ast->audiobuf+x*2*w+y*cfs, cfs);
afd302fa
RB
616 break;
617 case CODEC_ID_ATRAC3:
618 case CODEC_ID_COOK:
619 for (x = 0; x < w/sps; x++)
ba614729 620 get_buffer(pb, ast->audiobuf+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
afd302fa
RB
621 break;
622 }
623
ba614729 624 if (++(ast->sub_packet_cnt) < h)
afd302fa
RB
625 return -1;
626 else {
ba614729 627 ast->sub_packet_cnt = 0;
afd302fa
RB
628 rm->audio_stream_num = st->index;
629 rm->audio_pkt_cnt = h * w / st->codec->block_align - 1;
630 // Release first audio packet
631 av_new_packet(pkt, st->codec->block_align);
ba614729
RB
632 memcpy(pkt->data, ast->audiobuf, st->codec->block_align);
633 *timestamp = ast->audiotimestamp;
afd302fa
RB
634 *flags = 2; // Mark first packet as keyframe
635 }
636 } else if (st->codec->codec_id == CODEC_ID_AAC) {
637 int x;
638 rm->audio_stream_num = st->index;
ba614729
RB
639 ast->sub_packet_cnt = (get_be16(pb) & 0xf0) >> 4;
640 if (ast->sub_packet_cnt) {
641 for (x = 0; x < ast->sub_packet_cnt; x++)
642 ast->sub_packet_lengths[x] = get_be16(pb);
afd302fa 643 // Release first audio packet
ba614729
RB
644 rm->audio_pkt_cnt = ast->sub_packet_cnt - 1;
645 av_get_packet(pb, pkt, ast->sub_packet_lengths[0]);
afd302fa
RB
646 *flags = 2; // Mark first packet as keyframe
647 }
badbe09a 648 } else {
afd302fa 649 av_get_packet(pb, pkt, len);
e29378ff 650 rm_ac3_swap_bytes(st, pkt);
badbe09a 651 }
afd302fa
RB
652 } else
653 av_get_packet(pb, pkt, len);
654
655 if( (st->discard >= AVDISCARD_NONKEY && !(*flags&2))
656 || st->discard >= AVDISCARD_ALL){
657 av_free_packet(pkt);
658 return -1;
659 }
660
661 pkt->stream_index = st->index;
662
663#if 0
664 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
665 if(st->codec->codec_id == CODEC_ID_RV20){
666 int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1);
667 av_log(NULL, AV_LOG_DEBUG, "%d %"PRId64" %d\n", *timestamp, *timestamp*512LL/25, seq);
668
669 seq |= (*timestamp&~0x3FFF);
670 if(seq - *timestamp > 0x2000) seq -= 0x4000;
671 if(seq - *timestamp < -0x2000) seq += 0x4000;
672 }
673 }
674#endif
675
676 pkt->pts= *timestamp;
677 if (*flags & 2)
678 pkt->flags |= PKT_FLAG_KEY;
679
a15ebf34 680 return st->codec->codec_type == CODEC_TYPE_AUDIO ? rm->audio_pkt_cnt : 0;
afd302fa
RB
681}
682
a9f84821 683int
fcc995a5 684ff_rm_retrieve_cache (AVFormatContext *s, ByteIOContext *pb,
886e89d0 685 AVStream *st, RMStream *ast, AVPacket *pkt)
d4d1b5fb 686{
1edddc99 687 RMDemuxContext *rm = s->priv_data;
d4d1b5fb
RB
688
689 assert (rm->audio_pkt_cnt > 0);
690
691 if (st->codec->codec_id == CODEC_ID_AAC)
ba614729 692 av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
d4d1b5fb
RB
693 else {
694 av_new_packet(pkt, st->codec->block_align);
ba614729
RB
695 memcpy(pkt->data, ast->audiobuf + st->codec->block_align *
696 (ast->sub_packet_h * ast->audio_framesize / st->codec->block_align - rm->audio_pkt_cnt),
d4d1b5fb
RB
697 st->codec->block_align);
698 }
699 rm->audio_pkt_cnt--;
700 pkt->flags = 0;
701 pkt->stream_index = st->index;
a9f84821
RB
702
703 return rm->audio_pkt_cnt;
d4d1b5fb
RB
704}
705
de6d9b64
FB
706static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
707{
1edddc99 708 RMDemuxContext *rm = s->priv_data;
899681cd 709 ByteIOContext *pb = s->pb;
de6d9b64 710 AVStream *st;
5c470b91 711 int i, len;
37e85dac 712 int64_t timestamp, pos;
bc17df09 713 int flags;
de6d9b64 714
c69e7914 715 if (rm->audio_pkt_cnt) {
e0f7e329
BL
716 // If there are queued audio packet return them first
717 st = s->streams[rm->audio_stream_num];
886e89d0 718 ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt);
c69e7914 719 } else if (rm->old_format) {
ba614729
RB
720 RMStream *ast;
721
c69e7914 722 st = s->streams[0];
ba614729 723 ast = st->priv_data;
c69e7914
RT
724 if (st->codec->codec_id == CODEC_ID_RA_288) {
725 int x, y;
726
ba614729
RB
727 for (y = 0; y < ast->sub_packet_h; y++)
728 for (x = 0; x < ast->sub_packet_h/2; x++)
729 if (get_buffer(pb, ast->audiobuf+x*2*ast->audio_framesize+y*ast->coded_framesize, ast->coded_framesize) <= 0)
6f3e0b21 730 return AVERROR(EIO);
c69e7914 731 rm->audio_stream_num = 0;
ba614729 732 rm->audio_pkt_cnt = ast->sub_packet_h * ast->audio_framesize / st->codec->block_align - 1;
c69e7914
RT
733 // Release first audio packet
734 av_new_packet(pkt, st->codec->block_align);
ba614729 735 memcpy(pkt->data, ast->audiobuf, st->codec->block_align);
c69e7914
RT
736 pkt->flags |= PKT_FLAG_KEY; // Mark first packet as keyframe
737 pkt->stream_index = 0;
738 } else {
739 /* just read raw bytes */
740 len = RAW_PACKET_SIZE;
741 len= av_get_packet(pb, pkt, len);
742 pkt->stream_index = 0;
743 if (len <= 0) {
6f3e0b21 744 return AVERROR(EIO);
c69e7914
RT
745 }
746 pkt->size = len;
747 }
e29378ff 748 rm_ac3_swap_bytes(st, pkt);
c9510803 749 } else {
37e85dac 750 int seq=1;
b9866ebc 751resync:
37e85dac 752 len=sync(s, &timestamp, &flags, &i, &pos);
bc17df09 753 if(len<0)
6f3e0b21 754 return AVERROR(EIO);
bc17df09
MN
755 st = s->streams[i];
756
886e89d0
RB
757 if (ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt,
758 &seq, &flags, &timestamp) < 0)
b9866ebc 759 goto resync;
d880240e 760
9b41eb37 761 if((flags&2) && (seq&0x7F) == 1)
8f8fae80 762 av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
5d6ef63f
PG
763 }
764
de6d9b64
FB
765 return 0;
766}
767
768static int rm_read_close(AVFormatContext *s)
769{
ba614729
RB
770 int i;
771
772 for (i=0;i<s->nb_streams;i++)
773 ff_rm_free_rmstream(s->streams[i]->priv_data);
e0f7e329 774
de6d9b64
FB
775 return 0;
776}
777
c9a65ca8
FB
778static int rm_probe(AVProbeData *p)
779{
780 /* check file header */
c9510803
FB
781 if ((p->buf[0] == '.' && p->buf[1] == 'R' &&
782 p->buf[2] == 'M' && p->buf[3] == 'F' &&
783 p->buf[4] == 0 && p->buf[5] == 0) ||
784 (p->buf[0] == '.' && p->buf[1] == 'r' &&
785 p->buf[2] == 'a' && p->buf[3] == 0xfd))
c9a65ca8
FB
786 return AVPROBE_SCORE_MAX;
787 else
788 return 0;
789}
790
115329f1 791static int64_t rm_read_dts(AVFormatContext *s, int stream_index,
bc17df09
MN
792 int64_t *ppos, int64_t pos_limit)
793{
1edddc99 794 RMDemuxContext *rm = s->priv_data;
bc17df09 795 int64_t pos, dts;
37e85dac 796 int stream_index2, flags, len, h;
bc17df09
MN
797
798 pos = *ppos;
115329f1 799
bc17df09
MN
800 if(rm->old_format)
801 return AV_NOPTS_VALUE;
802
899681cd 803 url_fseek(s->pb, pos, SEEK_SET);
bc17df09
MN
804 rm->remaining_len=0;
805 for(;;){
37e85dac
MN
806 int seq=1;
807 AVStream *st;
808
809 len=sync(s, &dts, &flags, &stream_index2, &pos);
bc17df09
MN
810 if(len<0)
811 return AV_NOPTS_VALUE;
37e85dac
MN
812
813 st = s->streams[stream_index2];
01f4895c 814 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
899681cd 815 h= get_byte(s->pb); len--;
37e85dac 816 if(!(h & 0x40)){
899681cd 817 seq = get_byte(s->pb); len--;
bc17df09
MN
818 }
819 }
115329f1 820
37e85dac 821 if((flags&2) && (seq&0x7F) == 1){
949b1a13 822// av_log(s, AV_LOG_DEBUG, "%d %d-%d %"PRId64" %d\n", flags, stream_index2, stream_index, dts, seq);
30a43f2d 823 av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME);
37e85dac
MN
824 if(stream_index2 == stream_index)
825 break;
826 }
827
899681cd 828 url_fskip(s->pb, len);
bc17df09
MN
829 }
830 *ppos = pos;
831 return dts;
832}
833
ff70e601 834AVInputFormat rm_demuxer = {
c9a65ca8 835 "rm",
bde15e74 836 NULL_IF_CONFIG_SMALL("RM format"),
1edddc99 837 sizeof(RMDemuxContext),
c9a65ca8
FB
838 rm_probe,
839 rm_read_header,
840 rm_read_packet,
841 rm_read_close,
bc17df09
MN
842 NULL,
843 rm_read_dts,
c9a65ca8 844};
ff13ba92
RB
845
846AVInputFormat rdt_demuxer = {
847 "rdt",
848 NULL_IF_CONFIG_SMALL("RDT demuxer"),
1edddc99 849 sizeof(RMDemuxContext),
ff13ba92
RB
850 NULL, NULL, NULL, rm_read_close, NULL, NULL
851};