value_num should also be 64bit (1 hunk from the asf seeking patch by DrDivx/Steve...
[libav.git] / libavformat / asf.c
CommitLineData
de6d9b64 1/*
542993b0 2 * ASF compatible decoder.
19720f15 3 * Copyright (c) 2000, 2001 Fabrice Bellard.
de6d9b64 4 *
19720f15
FB
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
de6d9b64 9 *
19720f15 10 * This library is distributed in the hope that it will be useful,
de6d9b64 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19720f15
FB
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
de6d9b64 14 *
19720f15
FB
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
5509bffa 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
de6d9b64 18 */
de6d9b64 19#include "avformat.h"
9d9f4119 20#include "riff.h"
f80c1ac0 21#include "mpegaudio.h"
542993b0 22#include "asf.h"
de6d9b64 23
580fb5e7
MN
24#undef NDEBUG
25#include <assert.h>
26
615b92fd 27#define FRAME_HEADER_SIZE 17
115329f1 28// Fix Me! FRAME_HEADER_SIZE may be different.
615b92fd 29
de6d9b64
FB
30static const GUID index_guid = {
31 0x33000890, 0xe5b1, 0x11cf, { 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb },
32};
33
de6d9b64
FB
34/**********************************/
35/* decoding */
36
37//#define DEBUG
38
39#ifdef DEBUG
5082f759
FR
40#define PRINT_IF_GUID(g,cmp) \
41if (!memcmp(g, &cmp, sizeof(GUID))) \
42 printf("(GUID: %s) ", #cmp)
43
de6d9b64
FB
44static void print_guid(const GUID *g)
45{
46 int i;
5082f759
FR
47 PRINT_IF_GUID(g, asf_header);
48 else PRINT_IF_GUID(g, file_header);
49 else PRINT_IF_GUID(g, stream_header);
50 else PRINT_IF_GUID(g, audio_stream);
51 else PRINT_IF_GUID(g, audio_conceal_none);
52 else PRINT_IF_GUID(g, video_stream);
53 else PRINT_IF_GUID(g, video_conceal_none);
ae38261e 54 else PRINT_IF_GUID(g, command_stream);
5082f759
FR
55 else PRINT_IF_GUID(g, comment_header);
56 else PRINT_IF_GUID(g, codec_comment_header);
57 else PRINT_IF_GUID(g, codec_comment1_header);
58 else PRINT_IF_GUID(g, data_header);
59 else PRINT_IF_GUID(g, index_guid);
60 else PRINT_IF_GUID(g, head1_guid);
61 else PRINT_IF_GUID(g, head2_guid);
62 else PRINT_IF_GUID(g, my_guid);
88141c91
MN
63 else PRINT_IF_GUID(g, ext_stream_header);
64 else PRINT_IF_GUID(g, extended_content_header);
65 else PRINT_IF_GUID(g, ext_stream_embed_stream_header);
66 else PRINT_IF_GUID(g, ext_stream_audio_stream);
5082f759
FR
67 else
68 printf("(GUID: unknown) ");
de6d9b64 69 printf("0x%08x, 0x%04x, 0x%04x, {", g->v1, g->v2, g->v3);
2a10020b 70 for(i=0;i<8;i++)
de6d9b64
FB
71 printf(" 0x%02x,", g->v4[i]);
72 printf("}\n");
73}
6df84c3a 74#undef PRINT_IF_GUID
de6d9b64
FB
75#endif
76
77static void get_guid(ByteIOContext *s, GUID *g)
78{
79 int i;
80
81 g->v1 = get_le32(s);
82 g->v2 = get_le16(s);
83 g->v3 = get_le16(s);
84 for(i=0;i<8;i++)
85 g->v4[i] = get_byte(s);
86}
87
88#if 0
89static void get_str16(ByteIOContext *pb, char *buf, int buf_size)
90{
91 int len, c;
92 char *q;
93
94 len = get_le16(pb);
95 q = buf;
96 while (len > 0) {
97 c = get_le16(pb);
98 if ((q - buf) < buf_size - 1)
99 *q++ = c;
100 len--;
101 }
102 *q = '\0';
103}
104#endif
105
106static void get_str16_nolen(ByteIOContext *pb, int len, char *buf, int buf_size)
107{
108 int c;
109 char *q;
110
111 q = buf;
112 while (len > 0) {
113 c = get_le16(pb);
114 if ((q - buf) < buf_size - 1)
115 *q++ = c;
116 len-=2;
117 }
118 *q = '\0';
119}
120
c9a65ca8
FB
121static int asf_probe(AVProbeData *pd)
122{
123 GUID g;
124 const unsigned char *p;
125 int i;
126
127 /* check file header */
128 if (pd->buf_size <= 32)
129 return 0;
130 p = pd->buf;
131 g.v1 = p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
132 p += 4;
133 g.v2 = p[0] | (p[1] << 8);
134 p += 2;
135 g.v3 = p[0] | (p[1] << 8);
136 p += 2;
137 for(i=0;i<8;i++)
138 g.v4[i] = *p++;
139
140 if (!memcmp(&g, &asf_header, sizeof(GUID)))
141 return AVPROBE_SCORE_MAX;
142 else
143 return 0;
144}
145
de6d9b64
FB
146static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
147{
c9a65ca8 148 ASFContext *asf = s->priv_data;
de6d9b64
FB
149 GUID g;
150 ByteIOContext *pb = &s->pb;
151 AVStream *st;
152 ASFStream *asf_st;
e095026a 153 int size, i;
0c1a9eda 154 int64_t gsize;
de6d9b64 155
de6d9b64
FB
156 get_guid(pb, &g);
157 if (memcmp(&g, &asf_header, sizeof(GUID)))
158 goto fail;
159 get_le64(pb);
160 get_le32(pb);
161 get_byte(pb);
162 get_byte(pb);
2141dc37 163 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
de6d9b64
FB
164 for(;;) {
165 get_guid(pb, &g);
166 gsize = get_le64(pb);
167#ifdef DEBUG
168 printf("%08Lx: ", url_ftell(pb) - 24);
169 print_guid(&g);
170 printf(" size=0x%Lx\n", gsize);
171#endif
172 if (gsize < 24)
173 goto fail;
174 if (!memcmp(&g, &file_header, sizeof(GUID))) {
2a10020b 175 get_guid(pb, &asf->hdr.guid);
bb270c08
DB
176 asf->hdr.file_size = get_le64(pb);
177 asf->hdr.create_time = get_le64(pb);
178 asf->hdr.packets_count = get_le64(pb);
179 asf->hdr.send_time = get_le64(pb);
180 asf->hdr.play_time = get_le64(pb);
181 asf->hdr.preroll = get_le32(pb);
182 asf->hdr.ignore = get_le32(pb);
183 asf->hdr.flags = get_le32(pb);
184 asf->hdr.min_pktsize = get_le32(pb);
185 asf->hdr.max_pktsize = get_le32(pb);
186 asf->hdr.max_bitrate = get_le32(pb);
187 asf->packet_size = asf->hdr.max_pktsize;
2141dc37 188 asf->nb_packets = asf->hdr.packets_count;
de6d9b64 189 } else if (!memcmp(&g, &stream_header, sizeof(GUID))) {
7ad5455c
MN
190 int type, type_specific_size, sizeX;
191 uint64_t total_size;
de6d9b64 192 unsigned int tag1;
0c1a9eda 193 int64_t pos1, pos2;
88141c91 194 int test_for_ext_stream_audio;
2a10020b 195
de6d9b64
FB
196 pos1 = url_ftell(pb);
197
247eadca 198 st = av_new_stream(s, 0);
de6d9b64
FB
199 if (!st)
200 goto fail;
9ee91c2f 201 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
de6d9b64
FB
202 asf_st = av_mallocz(sizeof(ASFStream));
203 if (!asf_st)
204 goto fail;
205 st->priv_data = asf_st;
c0df9d75 206 st->start_time = asf->hdr.preroll;
115329f1 207 st->duration = asf->hdr.send_time /
c0df9d75 208 (10000000 / 1000) - st->start_time;
de6d9b64 209 get_guid(pb, &g);
88141c91
MN
210
211 test_for_ext_stream_audio = 0;
de6d9b64
FB
212 if (!memcmp(&g, &audio_stream, sizeof(GUID))) {
213 type = CODEC_TYPE_AUDIO;
214 } else if (!memcmp(&g, &video_stream, sizeof(GUID))) {
215 type = CODEC_TYPE_VIDEO;
ae38261e
MB
216 } else if (!memcmp(&g, &command_stream, sizeof(GUID))) {
217 type = CODEC_TYPE_UNKNOWN;
88141c91
MN
218 } else if (!memcmp(&g, &ext_stream_embed_stream_header, sizeof(GUID))) {
219 test_for_ext_stream_audio = 1;
220 type = CODEC_TYPE_UNKNOWN;
de6d9b64
FB
221 } else {
222 goto fail;
223 }
224 get_guid(pb, &g);
225 total_size = get_le64(pb);
2e7973bb 226 type_specific_size = get_le32(pb);
de6d9b64 227 get_le32(pb);
bb270c08 228 st->id = get_le16(pb) & 0x7f; /* stream id */
2a10020b 229 // mapping of asf ID to AV stream ID;
247eadca 230 asf->asfid2avid[st->id] = s->nb_streams - 1;
2a10020b 231
de6d9b64 232 get_le32(pb);
88141c91
MN
233
234 if (test_for_ext_stream_audio) {
235 get_guid(pb, &g);
236 if (!memcmp(&g, &ext_stream_audio_stream, sizeof(GUID))) {
237 type = CODEC_TYPE_AUDIO;
238 get_guid(pb, &g);
239 get_le32(pb);
240 get_le32(pb);
241 get_le32(pb);
242 get_guid(pb, &g);
243 get_le32(pb);
244 }
245 }
246
bb270c08 247 st->codec->codec_type = type;
de6d9b64 248 if (type == CODEC_TYPE_AUDIO) {
01f4895c 249 get_wav_header(pb, st->codec, type_specific_size);
afda223c 250 st->need_parsing = 1;
bb270c08
DB
251 /* We have to init the frame size at some point .... */
252 pos2 = url_ftell(pb);
253 if (gsize > (pos2 + 8 - pos1 + 24)) {
254 asf_st->ds_span = get_byte(pb);
255 asf_st->ds_packet_size = get_le16(pb);
256 asf_st->ds_chunk_size = get_le16(pb);
257 asf_st->ds_data_size = get_le16(pb);
258 asf_st->ds_silence_data = get_byte(pb);
259 }
260 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
261 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
262 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
263 if (asf_st->ds_span > 1) {
264 if (!asf_st->ds_chunk_size
265 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1))
266 asf_st->ds_span = 0; // disable descrambling
267 }
01f4895c 268 switch (st->codec->codec_id) {
80783dc2 269 case CODEC_ID_MP3:
01f4895c 270 st->codec->frame_size = MPA_FRAME_SIZE;
f80c1ac0
PG
271 break;
272 case CODEC_ID_PCM_S16LE:
273 case CODEC_ID_PCM_S16BE:
274 case CODEC_ID_PCM_U16LE:
275 case CODEC_ID_PCM_U16BE:
276 case CODEC_ID_PCM_S8:
277 case CODEC_ID_PCM_U8:
278 case CODEC_ID_PCM_ALAW:
279 case CODEC_ID_PCM_MULAW:
01f4895c 280 st->codec->frame_size = 1;
f80c1ac0
PG
281 break;
282 default:
283 /* This is probably wrong, but it prevents a crash later */
01f4895c 284 st->codec->frame_size = 1;
f80c1ac0
PG
285 break;
286 }
88141c91 287 } else if (type == CODEC_TYPE_VIDEO) {
bb270c08 288 get_le32(pb);
de6d9b64
FB
289 get_le32(pb);
290 get_byte(pb);
291 size = get_le16(pb); /* size */
0ffd77b9 292 sizeX= get_le32(pb); /* size */
01f4895c 293 st->codec->width = get_le32(pb);
bb270c08 294 st->codec->height = get_le32(pb);
2a10020b 295 /* not available for asf */
de6d9b64 296 get_le16(pb); /* panes */
bb270c08 297 st->codec->bits_per_sample = get_le16(pb); /* depth */
de6d9b64 298 tag1 = get_le32(pb);
bb270c08 299 url_fskip(pb, 20);
0ffd77b9
MN
300// av_log(NULL, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
301 size= sizeX;
bb270c08
DB
302 if (size > 40) {
303 st->codec->extradata_size = size - 40;
304 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
305 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
306 }
5e29abf8
RT
307
308 /* Extract palette from extradata if bpp <= 8 */
309 /* This code assumes that extradata contains only palette */
310 /* This is true for all paletted codecs implemented in ffmpeg */
01f4895c
MN
311 if (st->codec->extradata_size && (st->codec->bits_per_sample <= 8)) {
312 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
5e29abf8 313#ifdef WORDS_BIGENDIAN
01f4895c
MN
314 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
315 st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
5e29abf8 316#else
01f4895c
MN
317 memcpy(st->codec->palctrl->palette, st->codec->extradata,
318 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
5e29abf8 319#endif
01f4895c 320 st->codec->palctrl->palette_changed = 1;
5e29abf8
RT
321 }
322
01f4895c 323 st->codec->codec_tag = tag1;
bb270c08 324 st->codec->codec_id = codec_get_id(codec_bmp_tags, tag1);
afbb5ce4
MN
325 if(tag1 == MKTAG('D', 'V', 'R', ' '))
326 st->need_parsing = 1;
de6d9b64
FB
327 }
328 pos2 = url_ftell(pb);
329 url_fskip(pb, gsize - (pos2 - pos1 + 24));
330 } else if (!memcmp(&g, &data_header, sizeof(GUID))) {
b6eaae39
KED
331 asf->data_object_offset = url_ftell(pb);
332 if (gsize != (uint64_t)-1 && gsize >= 24) {
333 asf->data_object_size = gsize - 24;
334 } else {
335 asf->data_object_size = (uint64_t)-1;
336 }
de6d9b64
FB
337 break;
338 } else if (!memcmp(&g, &comment_header, sizeof(GUID))) {
339 int len1, len2, len3, len4, len5;
340
341 len1 = get_le16(pb);
342 len2 = get_le16(pb);
343 len3 = get_le16(pb);
344 len4 = get_le16(pb);
345 len5 = get_le16(pb);
346 get_str16_nolen(pb, len1, s->title, sizeof(s->title));
347 get_str16_nolen(pb, len2, s->author, sizeof(s->author));
348 get_str16_nolen(pb, len3, s->copyright, sizeof(s->copyright));
349 get_str16_nolen(pb, len4, s->comment, sizeof(s->comment));
bb270c08 350 url_fskip(pb, len5);
d13431cd
KK
351 } else if (!memcmp(&g, &extended_content_header, sizeof(GUID))) {
352 int desc_count, i;
353
354 desc_count = get_le16(pb);
355 for(i=0;i<desc_count;i++)
356 {
052aa2ad
SH
357 int name_len,value_type,value_len;
358 uint64_t value_num = 0;
d13431cd
KK
359 char *name, *value;
360
361 name_len = get_le16(pb);
362 name = (char *)av_mallocz(name_len);
363 get_str16_nolen(pb, name_len, name, name_len);
364 value_type = get_le16(pb);
365 value_len = get_le16(pb);
366 if ((value_type == 0) || (value_type == 1)) // unicode or byte
367 {
368 value = (char *)av_mallocz(value_len);
369 get_str16_nolen(pb, value_len, value, value_len);
0ecca7a4 370 if (strcmp(name,"WM/AlbumTitle")==0) { pstrcpy(s->album, sizeof(s->album), value); }
d13431cd
KK
371 av_free(value);
372 }
724dc20c 373 if ((value_type >= 2) && (value_type <= 5)) // boolean or DWORD or QWORD or WORD
d13431cd
KK
374 {
375 if (value_type==2) value_num = get_le32(pb);
376 if (value_type==3) value_num = get_le32(pb);
377 if (value_type==4) value_num = get_le64(pb);
378 if (value_type==5) value_num = get_le16(pb);
379 if (strcmp(name,"WM/Track")==0) s->track = value_num + 1;
380 if (strcmp(name,"WM/TrackNumber")==0) s->track = value_num;
381 }
382 av_free(name);
383 }
88141c91
MN
384 } else if (!memcmp(&g, &ext_stream_header, sizeof(GUID))) {
385 int ext_len, payload_ext_ct, stream_ct;
386 uint32_t ext_d;
1bd86246 387 int64_t pos_ex_st;
88141c91
MN
388 pos_ex_st = url_ftell(pb);
389
390 get_le64(pb);
391 get_le64(pb);
392 get_le32(pb);
393 get_le32(pb);
394 get_le32(pb);
395 get_le32(pb);
396 get_le32(pb);
397 get_le32(pb);
398 get_le32(pb);
399 get_le32(pb);
400 get_le16(pb);
401 get_le16(pb);
402 get_le64(pb);
403 stream_ct = get_le16(pb);
404 payload_ext_ct = get_le16(pb);
405
406 for (i=0; i<stream_ct; i++){
407 get_le16(pb);
408 ext_len = get_le16(pb);
409 url_fseek(pb, ext_len, SEEK_CUR);
410 }
411
412 for (i=0; i<payload_ext_ct; i++){
413 get_guid(pb, &g);
414 ext_d=get_le16(pb);
415 ext_len=get_le32(pb);
416 url_fseek(pb, ext_len, SEEK_CUR);
417 }
418
419 // there could be a optional stream properties object to follow
420 // if so the next iteration will pick it up
de6d9b64
FB
421 } else if (!memcmp(&g, &head1_guid, sizeof(GUID))) {
422 int v1, v2;
423 get_guid(pb, &g);
424 v1 = get_le32(pb);
425 v2 = get_le16(pb);
88141c91 426#if 0
de6d9b64
FB
427 } else if (!memcmp(&g, &codec_comment_header, sizeof(GUID))) {
428 int len, v1, n, num;
429 char str[256], *q;
430 char tag[16];
431
432 get_guid(pb, &g);
433 print_guid(&g);
2a10020b 434
de6d9b64
FB
435 n = get_le32(pb);
436 for(i=0;i<n;i++) {
437 num = get_le16(pb); /* stream number */
438 get_str16(pb, str, sizeof(str));
439 get_str16(pb, str, sizeof(str));
440 len = get_le16(pb);
441 q = tag;
442 while (len > 0) {
443 v1 = get_byte(pb);
444 if ((q - tag) < sizeof(tag) - 1)
445 *q++ = v1;
446 len--;
447 }
448 *q = '\0';
449 }
450#endif
451 } else if (url_feof(pb)) {
452 goto fail;
453 } else {
454 url_fseek(pb, gsize - 24, SEEK_CUR);
455 }
456 }
457 get_guid(pb, &g);
458 get_le64(pb);
459 get_byte(pb);
460 get_byte(pb);
2141dc37
ZK
461 if (url_feof(pb))
462 goto fail;
463 asf->data_offset = url_ftell(pb);
de6d9b64
FB
464 asf->packet_size_left = 0;
465
466 return 0;
467
468 fail:
4c3dff6d 469 for(i=0;i<s->nb_streams;i++) {
de6d9b64 470 AVStream *st = s->streams[i];
bb270c08
DB
471 if (st) {
472 av_free(st->priv_data);
01f4895c 473 av_free(st->codec->extradata);
bb270c08 474 }
1ea4f593 475 av_free(st);
de6d9b64 476 }
de6d9b64
FB
477 return -1;
478}
479
2a10020b
ZK
480#define DO_2BITS(bits, var, defval) \
481 switch (bits & 3) \
482 { \
483 case 3: var = get_le32(pb); rsize += 4; break; \
484 case 2: var = get_le16(pb); rsize += 2; break; \
485 case 1: var = get_byte(pb); rsize++; break; \
486 default: var = defval; break; \
487 }
488
de6d9b64
FB
489static int asf_get_packet(AVFormatContext *s)
490{
491 ASFContext *asf = s->priv_data;
492 ByteIOContext *pb = &s->pb;
2a10020b 493 uint32_t packet_length, padsize;
29962fea
MN
494 int rsize = 9;
495 int c;
115329f1 496
29962fea 497 assert((url_ftell(&s->pb) - s->data_offset) % asf->packet_size == 0);
115329f1 498
29962fea 499 c = get_byte(pb);
1359c2d4 500 if (c != 0x82) {
5acdd6e6 501 if (!url_feof(pb))
bb270c08 502 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
2a10020b
ZK
503 }
504 if ((c & 0x0f) == 2) { // always true for now
bb270c08 505 if (get_le16(pb) != 0) {
5acdd6e6 506 if (!url_feof(pb))
bb270c08
DB
507 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
508 return AVERROR_IO;
509 }
29962fea
MN
510 rsize+=2;
511/* }else{
512 if (!url_feof(pb))
bb270c08
DB
513 printf("ff asf bad header %x at:%lld\n", c, url_ftell(pb));
514 return AVERROR_IO;*/
de6d9b64 515 }
2a10020b
ZK
516
517 asf->packet_flags = get_byte(pb);
518 asf->packet_property = get_byte(pb);
519
520 DO_2BITS(asf->packet_flags >> 5, packet_length, asf->packet_size);
521 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
522 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
523
524 asf->packet_timestamp = get_le32(pb);
de6d9b64 525 get_le16(pb); /* duration */
2141dc37 526 // rsize has at least 11 bytes which have to be present
2a10020b
ZK
527
528 if (asf->packet_flags & 0x01) {
bb270c08 529 asf->packet_segsizetype = get_byte(pb); rsize++;
2a10020b
ZK
530 asf->packet_segments = asf->packet_segsizetype & 0x3f;
531 } else {
bb270c08 532 asf->packet_segments = 1;
2a10020b
ZK
533 asf->packet_segsizetype = 0x80;
534 }
535 asf->packet_size_left = packet_length - padsize - rsize;
acbe6cfa
ZK
536 if (packet_length < asf->hdr.min_pktsize)
537 padsize += asf->hdr.min_pktsize - packet_length;
2a10020b 538 asf->packet_padsize = padsize;
de6d9b64 539#ifdef DEBUG
2a10020b 540 printf("packet: size=%d padsize=%d left=%d\n", asf->packet_size, asf->packet_padsize, asf->packet_size_left);
de6d9b64 541#endif
de6d9b64
FB
542 return 0;
543}
544
545static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
546{
547 ASFContext *asf = s->priv_data;
2a10020b 548 ASFStream *asf_st = 0;
de6d9b64 549 ByteIOContext *pb = &s->pb;
1359c2d4 550 //static int pc = 0;
2a10020b 551 for (;;) {
bb270c08
DB
552 int rsize = 0;
553 if (asf->packet_size_left < FRAME_HEADER_SIZE
554 || asf->packet_segments < 1) {
555 //asf->packet_size_left <= asf->packet_padsize) {
556 int ret = asf->packet_size_left + asf->packet_padsize;
557 //printf("PacketLeftSize:%d Pad:%d Pos:%Ld\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
47627aec
MN
558 if((url_ftell(&s->pb) + ret - s->data_offset) % asf->packet_size)
559 ret += asf->packet_size - ((url_ftell(&s->pb) + ret - s->data_offset) % asf->packet_size);
bb270c08
DB
560 /* fail safe */
561 url_fskip(pb, ret);
82b9e4a2 562 asf->packet_pos= url_ftell(&s->pb);
b6eaae39
KED
563 if (asf->data_object_size != (uint64_t)-1 &&
564 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
565 return AVERROR_IO; /* Do not exceed the size of the data object */
bb270c08
DB
566 ret = asf_get_packet(s);
567 //printf("READ ASF PACKET %d r:%d c:%d\n", ret, asf->packet_size_left, pc++);
568 if (ret < 0 || url_feof(pb))
569 return AVERROR_IO;
2141dc37 570 asf->packet_time_start = 0;
2a10020b 571 continue;
bb270c08
DB
572 }
573 if (asf->packet_time_start == 0) {
574 /* read frame header */
1359c2d4 575 int num = get_byte(pb);
bb270c08
DB
576 asf->packet_segments--;
577 rsize++;
578 asf->packet_key_frame = (num & 0x80) >> 7;
579 asf->stream_index = asf->asfid2avid[num & 0x7f];
580 // sequence should be ignored!
581 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
582 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
583 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
82b9e4a2 584//printf("key:%d stream:%d seq:%d offset:%d replic_size:%d\n", asf->packet_key_frame, asf->stream_index, asf->packet_seq, //asf->packet_frag_offset, asf->packet_replic_size);
bb270c08 585 if (asf->packet_replic_size > 1) {
1305a9d5 586 assert(asf->packet_replic_size >= 8);
2a10020b 587 // it should be always at least 8 bytes - FIXME validate
bb270c08
DB
588 asf->packet_obj_size = get_le32(pb);
589 asf->packet_frag_timestamp = get_le32(pb); // timestamp
590 if (asf->packet_replic_size > 8)
591 url_fskip(pb, asf->packet_replic_size - 8);
592 rsize += asf->packet_replic_size; // FIXME - check validity
593 } else if (asf->packet_replic_size==1){
594 // multipacket - frag_offset is begining timestamp
595 asf->packet_time_start = asf->packet_frag_offset;
2a10020b 596 asf->packet_frag_offset = 0;
bb270c08 597 asf->packet_frag_timestamp = asf->packet_timestamp;
2141dc37 598
1305a9d5 599 asf->packet_time_delta = get_byte(pb);
bb270c08
DB
600 rsize++;
601 }else{
1305a9d5
MN
602 assert(asf->packet_replic_size==0);
603 }
bb270c08
DB
604 if (asf->packet_flags & 0x01) {
605 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
acbe6cfa 606#undef DO_2BITS
bb270c08
DB
607 //printf("Fragsize %d\n", asf->packet_frag_size);
608 } else {
609 asf->packet_frag_size = asf->packet_size_left - rsize;
610 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
611 }
612 if (asf->packet_replic_size == 1) {
613 asf->packet_multi_size = asf->packet_frag_size;
614 if (asf->packet_multi_size > asf->packet_size_left) {
615 asf->packet_segments = 0;
2141dc37 616 continue;
bb270c08
DB
617 }
618 }
619 asf->packet_size_left -= rsize;
620 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
1359c2d4 621
bb270c08 622 if (asf->stream_index < 0
f3356e9c
MN
623 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
624 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
625 ) {
1359c2d4 626 asf->packet_time_start = 0;
bb270c08
DB
627 /* unhandled packet (should not happen) */
628 url_fskip(pb, asf->packet_frag_size);
629 asf->packet_size_left -= asf->packet_frag_size;
b9866ebc
MN
630 if(asf->stream_index < 0)
631 av_log(s, AV_LOG_ERROR, "ff asf skip %d %d\n", asf->packet_frag_size, num & 0x7f);
1359c2d4 632 continue;
bb270c08
DB
633 }
634 asf->asf_st = s->streams[asf->stream_index]->priv_data;
635 }
636 asf_st = asf->asf_st;
637
638 if ((asf->packet_frag_offset != asf_st->frag_offset
639 || (asf->packet_frag_offset
640 && asf->packet_seq != asf_st->seq)) // seq should be ignored
641 ) {
642 /* cannot continue current packet: free it */
643 // FIXME better check if packet was already allocated
644 av_log(s, AV_LOG_INFO, "ff asf parser skips: %d - %d o:%d - %d %d %d fl:%d\n",
645 asf_st->pkt.size,
646 asf->packet_obj_size,
647 asf->packet_frag_offset, asf_st->frag_offset,
648 asf->packet_seq, asf_st->seq, asf->packet_frag_size);
649 if (asf_st->pkt.size)
650 av_free_packet(&asf_st->pkt);
651 asf_st->frag_offset = 0;
652 if (asf->packet_frag_offset != 0) {
653 url_fskip(pb, asf->packet_frag_size);
654 av_log(s, AV_LOG_INFO, "ff asf parser skipping %db\n", asf->packet_frag_size);
655 asf->packet_size_left -= asf->packet_frag_size;
656 continue;
657 }
658 }
659 if (asf->packet_replic_size == 1) {
660 // frag_offset is here used as the begining timestamp
661 asf->packet_frag_timestamp = asf->packet_time_start;
662 asf->packet_time_start += asf->packet_time_delta;
663 asf->packet_obj_size = asf->packet_frag_size = get_byte(pb);
664 asf->packet_size_left--;
2141dc37 665 asf->packet_multi_size--;
bb270c08
DB
666 if (asf->packet_multi_size < asf->packet_obj_size)
667 {
668 asf->packet_time_start = 0;
669 url_fskip(pb, asf->packet_multi_size);
670 asf->packet_size_left -= asf->packet_multi_size;
2141dc37 671 continue;
bb270c08
DB
672 }
673 asf->packet_multi_size -= asf->packet_obj_size;
674 //printf("COMPRESS size %d %d %d ms:%d\n", asf->packet_obj_size, asf->packet_frag_timestamp, asf->packet_size_left, asf->packet_multi_size);
675 }
676 if (asf_st->frag_offset == 0) {
677 /* new packet */
678 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
679 asf_st->seq = asf->packet_seq;
680 asf_st->pkt.pts = asf->packet_frag_timestamp;
681 asf_st->pkt.stream_index = asf->stream_index;
115329f1
DB
682 asf_st->pkt.pos =
683 asf_st->packet_pos= asf->packet_pos;
684//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
82b9e4a2 685//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY,
01f4895c 686//s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size);
bb270c08
DB
687 if (s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO)
688 asf->packet_key_frame = 1;
689 if (asf->packet_key_frame)
690 asf_st->pkt.flags |= PKT_FLAG_KEY;
691 }
692
693 /* read data */
694 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
695 // asf->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
696 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
697 asf->packet_size_left -= asf->packet_frag_size;
698 if (asf->packet_size_left < 0)
2141dc37 699 continue;
bb270c08
DB
700 get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
701 asf->packet_frag_size);
702 asf_st->frag_offset += asf->packet_frag_size;
703 /* test if whole packet is read */
704 if (asf_st->frag_offset == asf_st->pkt.size) {
705 /* return packet */
706 if (asf_st->ds_span > 1) {
707 /* packet descrambling */
708 char* newdata = av_malloc(asf_st->pkt.size);
709 if (newdata) {
710 int offset = 0;
711 while (offset < asf_st->pkt.size) {
712 int off = offset / asf_st->ds_chunk_size;
713 int row = off / asf_st->ds_span;
714 int col = off % asf_st->ds_span;
715 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
716 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
717 memcpy(newdata + offset,
718 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
719 asf_st->ds_chunk_size);
720 offset += asf_st->ds_chunk_size;
721 }
722 av_free(asf_st->pkt.data);
723 asf_st->pkt.data = newdata;
724 }
725 }
726 asf_st->frag_offset = 0;
727 memcpy(pkt, &asf_st->pkt, sizeof(AVPacket));
728 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
729 asf_st->pkt.size = 0;
730 asf_st->pkt.data = 0;
731 break; // packet completed
732 }
de6d9b64 733 }
de6d9b64
FB
734 return 0;
735}
736
737static int asf_read_close(AVFormatContext *s)
738{
de6d9b64
FB
739 int i;
740
741 for(i=0;i<s->nb_streams;i++) {
bb270c08
DB
742 AVStream *st = s->streams[i];
743 av_free(st->priv_data);
01f4895c 744 av_free(st->codec->palctrl);
de6d9b64 745 }
de6d9b64
FB
746 return 0;
747}
748
38376f00
KK
749// Added to support seeking after packets have been read
750// If information is not reset, read_packet fails due to
751// leftover information from previous reads
752static void asf_reset_header(AVFormatContext *s)
753{
754 ASFContext *asf = s->priv_data;
82b9e4a2
MN
755 ASFStream *asf_st;
756 int i;
38376f00
KK
757
758 asf->packet_nb_frames = 0;
759 asf->packet_timestamp_start = -1;
760 asf->packet_timestamp_end = -1;
761 asf->packet_size_left = 0;
762 asf->packet_segments = 0;
763 asf->packet_flags = 0;
764 asf->packet_property = 0;
765 asf->packet_timestamp = 0;
766 asf->packet_segsizetype = 0;
767 asf->packet_segments = 0;
768 asf->packet_seq = 0;
769 asf->packet_replic_size = 0;
770 asf->packet_key_frame = 0;
771 asf->packet_padsize = 0;
772 asf->packet_frag_offset = 0;
773 asf->packet_frag_size = 0;
774 asf->packet_frag_timestamp = 0;
775 asf->packet_multi_size = 0;
776 asf->packet_obj_size = 0;
777 asf->packet_time_delta = 0;
778 asf->packet_time_start = 0;
115329f1 779
82b9e4a2
MN
780 for(i=0; i<s->nb_streams; i++){
781 asf_st= s->streams[i]->priv_data;
782 av_free_packet(&asf_st->pkt);
783 asf_st->frag_offset=0;
784 asf_st->seq=0;
785 }
786 asf->asf_st= NULL;
38376f00
KK
787}
788
8d14a25c 789static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
38376f00
KK
790{
791 ASFContext *asf = s->priv_data;
792 AVPacket pkt1, *pkt = &pkt1;
82b9e4a2 793 ASFStream *asf_st;
580fb5e7 794 int64_t pts;
82b9e4a2 795 int64_t pos= *ppos;
3e9245a9
MN
796 int i;
797 int64_t start_pos[s->nb_streams];
115329f1 798
3e9245a9
MN
799 for(i=0; i<s->nb_streams; i++){
800 start_pos[i]= pos;
801 }
115329f1 802
8d14a25c
MN
803 pos= (pos+asf->packet_size-1-s->data_offset)/asf->packet_size*asf->packet_size+ s->data_offset;
804 *ppos= pos;
805 url_fseek(&s->pb, pos, SEEK_SET);
115329f1 806
82b9e4a2 807//printf("asf_read_pts\n");
82b9e4a2 808 asf_reset_header(s);
3e9245a9 809 for(;;){
82b9e4a2 810 if (av_read_frame(s, pkt) < 0){
bc874dae 811 av_log(s, AV_LOG_INFO, "seek failed\n");
bb270c08 812 return AV_NOPTS_VALUE;
82b9e4a2 813 }
115329f1 814
38cf2a72 815 pts= pkt->pts;
580fb5e7
MN
816
817 av_free_packet(pkt);
3e9245a9
MN
818 if(pkt->flags&PKT_FLAG_KEY){
819 i= pkt->stream_index;
820
821 asf_st= s->streams[i]->priv_data;
822
823 assert((asf_st->packet_pos - s->data_offset) % asf->packet_size == 0);
8d14a25c 824 pos= asf_st->packet_pos;
09646bab 825
30a43f2d 826 av_add_index_entry(s->streams[i], pos, pkt->size, pts, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
8d14a25c 827 start_pos[i]= asf_st->packet_pos + 1;
115329f1 828
3e9245a9
MN
829 if(pkt->stream_index == stream_index)
830 break;
831 }
832 }
833
834 *ppos= pos;
82b9e4a2 835//printf("found keyframe at %Ld stream %d stamp:%Ld\n", *ppos, stream_index, pts);
580fb5e7
MN
836
837 return pts;
38376f00
KK
838}
839
3ba1438d 840static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
2a10020b 841{
afda223c 842 ASFContext *asf = s->priv_data;
115329f1 843
a602556e 844 if (asf->packet_size <= 0)
38376f00
KK
845 return -1;
846
3ba1438d 847 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
8d14a25c 848 return -1;
3e9245a9 849
38376f00
KK
850 asf_reset_header(s);
851 return 0;
2a10020b
ZK
852}
853
ff70e601 854AVInputFormat asf_demuxer = {
c9a65ca8
FB
855 "asf",
856 "asf format",
857 sizeof(ASFContext),
858 asf_probe,
859 asf_read_header,
860 asf_read_packet,
861 asf_read_close,
2a10020b 862 asf_read_seek,
8d14a25c 863 asf_read_pts,
c9a65ca8 864};