Increment minor after r10709.
[libav.git] / libavformat / asf.c
CommitLineData
de6d9b64 1/*
7fbde343 2 * ASF 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 */
de6d9b64 21#include "avformat.h"
9d9f4119 22#include "riff.h"
f80c1ac0 23#include "mpegaudio.h"
542993b0 24#include "asf.h"
db5c43b4 25#include "common.h"
de6d9b64 26
580fb5e7
MN
27#undef NDEBUG
28#include <assert.h>
29
615b92fd 30#define FRAME_HEADER_SIZE 17
115329f1 31// Fix Me! FRAME_HEADER_SIZE may be different.
615b92fd 32
de6d9b64 33static const GUID index_guid = {
24c14d6d 34 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
de6d9b64
FB
35};
36
0e3b6a6f
RM
37static const GUID stream_bitrate_guid = { /* (http://get.to/sdp) */
38 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
39};
de6d9b64
FB
40/**********************************/
41/* decoding */
42
43//#define DEBUG
44
45#ifdef DEBUG
5082f759
FR
46#define PRINT_IF_GUID(g,cmp) \
47if (!memcmp(g, &cmp, sizeof(GUID))) \
48 printf("(GUID: %s) ", #cmp)
49
de6d9b64
FB
50static void print_guid(const GUID *g)
51{
52 int i;
5082f759
FR
53 PRINT_IF_GUID(g, asf_header);
54 else PRINT_IF_GUID(g, file_header);
55 else PRINT_IF_GUID(g, stream_header);
56 else PRINT_IF_GUID(g, audio_stream);
57 else PRINT_IF_GUID(g, audio_conceal_none);
58 else PRINT_IF_GUID(g, video_stream);
59 else PRINT_IF_GUID(g, video_conceal_none);
ae38261e 60 else PRINT_IF_GUID(g, command_stream);
5082f759
FR
61 else PRINT_IF_GUID(g, comment_header);
62 else PRINT_IF_GUID(g, codec_comment_header);
63 else PRINT_IF_GUID(g, codec_comment1_header);
64 else PRINT_IF_GUID(g, data_header);
65 else PRINT_IF_GUID(g, index_guid);
66 else PRINT_IF_GUID(g, head1_guid);
67 else PRINT_IF_GUID(g, head2_guid);
68 else PRINT_IF_GUID(g, my_guid);
88141c91
MN
69 else PRINT_IF_GUID(g, ext_stream_header);
70 else PRINT_IF_GUID(g, extended_content_header);
71 else PRINT_IF_GUID(g, ext_stream_embed_stream_header);
72 else PRINT_IF_GUID(g, ext_stream_audio_stream);
30e88789 73 else PRINT_IF_GUID(g, metadata_header);
0e3b6a6f 74 else PRINT_IF_GUID(g, stream_bitrate_guid);
5082f759
FR
75 else
76 printf("(GUID: unknown) ");
24c14d6d
MN
77 for(i=0;i<16;i++)
78 printf(" 0x%02x,", (*g)[i]);
de6d9b64
FB
79 printf("}\n");
80}
6df84c3a 81#undef PRINT_IF_GUID
de6d9b64
FB
82#endif
83
84static void get_guid(ByteIOContext *s, GUID *g)
85{
24c14d6d
MN
86 assert(sizeof(*g) == 16);
87 get_buffer(s, g, sizeof(*g));
de6d9b64
FB
88}
89
90#if 0
91static void get_str16(ByteIOContext *pb, char *buf, int buf_size)
92{
93 int len, c;
94 char *q;
95
96 len = get_le16(pb);
97 q = buf;
98 while (len > 0) {
99 c = get_le16(pb);
100 if ((q - buf) < buf_size - 1)
101 *q++ = c;
102 len--;
103 }
104 *q = '\0';
105}
106#endif
107
108static void get_str16_nolen(ByteIOContext *pb, int len, char *buf, int buf_size)
109{
db5c43b4
ZM
110 char* q = buf;
111 len /= 2;
112 while (len--) {
113 uint8_t tmp;
114 PUT_UTF8(get_le16(pb), tmp, if (q - buf < buf_size - 1) *q++ = tmp;)
de6d9b64
FB
115 }
116 *q = '\0';
117}
118
c9a65ca8
FB
119static int asf_probe(AVProbeData *pd)
120{
c9a65ca8 121 /* check file header */
24c14d6d 122 if (!memcmp(pd->buf, &asf_header, sizeof(GUID)))
c9a65ca8
FB
123 return AVPROBE_SCORE_MAX;
124 else
125 return 0;
126}
127
30e88789
MN
128static int get_value(ByteIOContext *pb, int type){
129 switch(type){
130 case 2: return get_le32(pb);
131 case 3: return get_le32(pb);
132 case 4: return get_le64(pb);
133 case 5: return get_le16(pb);
134 default:return INT_MIN;
135 }
136}
137
de6d9b64
FB
138static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
139{
c9a65ca8 140 ASFContext *asf = s->priv_data;
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FB
141 GUID g;
142 ByteIOContext *pb = &s->pb;
143 AVStream *st;
144 ASFStream *asf_st;
e095026a 145 int size, i;
0c1a9eda 146 int64_t gsize;
30e88789 147 AVRational dar[128];
d8470737 148 uint32_t bitrate[128];
30e88789
MN
149
150 memset(dar, 0, sizeof(dar));
d8470737 151 memset(bitrate, 0, sizeof(bitrate));
de6d9b64 152
de6d9b64
FB
153 get_guid(pb, &g);
154 if (memcmp(&g, &asf_header, sizeof(GUID)))
155 goto fail;
156 get_le64(pb);
157 get_le32(pb);
158 get_byte(pb);
159 get_byte(pb);
2141dc37 160 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
de6d9b64
FB
161 for(;;) {
162 get_guid(pb, &g);
163 gsize = get_le64(pb);
164#ifdef DEBUG
949b1a13 165 printf("%08"PRIx64": ", url_ftell(pb) - 24);
de6d9b64 166 print_guid(&g);
949b1a13 167 printf(" size=0x%"PRIx64"\n", gsize);
de6d9b64 168#endif
09d9672a
MN
169 if (!memcmp(&g, &data_header, sizeof(GUID))) {
170 asf->data_object_offset = url_ftell(pb);
171 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
172 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
173 asf->data_object_size = gsize - 24;
174 } else {
175 asf->data_object_size = (uint64_t)-1;
176 }
177 break;
178 }
de6d9b64
FB
179 if (gsize < 24)
180 goto fail;
181 if (!memcmp(&g, &file_header, sizeof(GUID))) {
2a10020b 182 get_guid(pb, &asf->hdr.guid);
bb270c08
DB
183 asf->hdr.file_size = get_le64(pb);
184 asf->hdr.create_time = get_le64(pb);
6bb2a2df 185 asf->nb_packets = get_le64(pb);
bb270c08
DB
186 asf->hdr.send_time = get_le64(pb);
187 asf->hdr.play_time = get_le64(pb);
188 asf->hdr.preroll = get_le32(pb);
189 asf->hdr.ignore = get_le32(pb);
190 asf->hdr.flags = get_le32(pb);
191 asf->hdr.min_pktsize = get_le32(pb);
192 asf->hdr.max_pktsize = get_le32(pb);
193 asf->hdr.max_bitrate = get_le32(pb);
194 asf->packet_size = asf->hdr.max_pktsize;
de6d9b64 195 } else if (!memcmp(&g, &stream_header, sizeof(GUID))) {
7ad5455c
MN
196 int type, type_specific_size, sizeX;
197 uint64_t total_size;
de6d9b64 198 unsigned int tag1;
371bf806 199 int64_t pos1, pos2, start_time;
6fea687e 200 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
2a10020b 201
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FB
202 pos1 = url_ftell(pb);
203
247eadca 204 st = av_new_stream(s, 0);
de6d9b64
FB
205 if (!st)
206 goto fail;
9ee91c2f 207 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
de6d9b64
FB
208 asf_st = av_mallocz(sizeof(ASFStream));
209 if (!asf_st)
210 goto fail;
211 st->priv_data = asf_st;
371bf806
MN
212 start_time = asf->hdr.preroll;
213
73fe1052
RM
214 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
215 st->duration = asf->hdr.send_time /
371bf806 216 (10000000 / 1000) - start_time;
73fe1052 217 }
de6d9b64 218 get_guid(pb, &g);
88141c91
MN
219
220 test_for_ext_stream_audio = 0;
de6d9b64
FB
221 if (!memcmp(&g, &audio_stream, sizeof(GUID))) {
222 type = CODEC_TYPE_AUDIO;
223 } else if (!memcmp(&g, &video_stream, sizeof(GUID))) {
224 type = CODEC_TYPE_VIDEO;
ae38261e
MB
225 } else if (!memcmp(&g, &command_stream, sizeof(GUID))) {
226 type = CODEC_TYPE_UNKNOWN;
88141c91
MN
227 } else if (!memcmp(&g, &ext_stream_embed_stream_header, sizeof(GUID))) {
228 test_for_ext_stream_audio = 1;
229 type = CODEC_TYPE_UNKNOWN;
de6d9b64
FB
230 } else {
231 goto fail;
232 }
233 get_guid(pb, &g);
234 total_size = get_le64(pb);
2e7973bb 235 type_specific_size = get_le32(pb);
de6d9b64 236 get_le32(pb);
bb270c08 237 st->id = get_le16(pb) & 0x7f; /* stream id */
2a10020b 238 // mapping of asf ID to AV stream ID;
247eadca 239 asf->asfid2avid[st->id] = s->nb_streams - 1;
2a10020b 240
de6d9b64 241 get_le32(pb);
88141c91
MN
242
243 if (test_for_ext_stream_audio) {
244 get_guid(pb, &g);
245 if (!memcmp(&g, &ext_stream_audio_stream, sizeof(GUID))) {
246 type = CODEC_TYPE_AUDIO;
6fea687e 247 is_dvr_ms_audio=1;
88141c91
MN
248 get_guid(pb, &g);
249 get_le32(pb);
250 get_le32(pb);
251 get_le32(pb);
252 get_guid(pb, &g);
253 get_le32(pb);
254 }
255 }
256
bb270c08 257 st->codec->codec_type = type;
de6d9b64 258 if (type == CODEC_TYPE_AUDIO) {
01f4895c 259 get_wav_header(pb, st->codec, type_specific_size);
6fea687e
JD
260 if (is_dvr_ms_audio) {
261 // codec_id and codec_tag are unreliable in dvr_ms
262 // files. Set them later by probing stream.
263 st->codec->codec_id = CODEC_ID_NONE;
264 st->codec->codec_tag = 0;
265 }
57004ff1 266 st->need_parsing = AVSTREAM_PARSE_FULL;
bb270c08
DB
267 /* We have to init the frame size at some point .... */
268 pos2 = url_ftell(pb);
b9c6d01b 269 if (gsize >= (pos2 + 8 - pos1 + 24)) {
bb270c08
DB
270 asf_st->ds_span = get_byte(pb);
271 asf_st->ds_packet_size = get_le16(pb);
272 asf_st->ds_chunk_size = get_le16(pb);
6bb2a2df
MN
273 get_le16(pb); //ds_data_size
274 get_byte(pb); //ds_silence_data
bb270c08
DB
275 }
276 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
277 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
278 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
279 if (asf_st->ds_span > 1) {
280 if (!asf_st->ds_chunk_size
05219463
MN
281 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
282 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
bb270c08
DB
283 asf_st->ds_span = 0; // disable descrambling
284 }
01f4895c 285 switch (st->codec->codec_id) {
80783dc2 286 case CODEC_ID_MP3:
01f4895c 287 st->codec->frame_size = MPA_FRAME_SIZE;
f80c1ac0
PG
288 break;
289 case CODEC_ID_PCM_S16LE:
290 case CODEC_ID_PCM_S16BE:
291 case CODEC_ID_PCM_U16LE:
292 case CODEC_ID_PCM_U16BE:
293 case CODEC_ID_PCM_S8:
294 case CODEC_ID_PCM_U8:
295 case CODEC_ID_PCM_ALAW:
296 case CODEC_ID_PCM_MULAW:
01f4895c 297 st->codec->frame_size = 1;
f80c1ac0
PG
298 break;
299 default:
300 /* This is probably wrong, but it prevents a crash later */
01f4895c 301 st->codec->frame_size = 1;
f80c1ac0
PG
302 break;
303 }
88141c91 304 } else if (type == CODEC_TYPE_VIDEO) {
bb270c08 305 get_le32(pb);
de6d9b64
FB
306 get_le32(pb);
307 get_byte(pb);
308 size = get_le16(pb); /* size */
0ffd77b9 309 sizeX= get_le32(pb); /* size */
01f4895c 310 st->codec->width = get_le32(pb);
bb270c08 311 st->codec->height = get_le32(pb);
2a10020b 312 /* not available for asf */
de6d9b64 313 get_le16(pb); /* panes */
bb270c08 314 st->codec->bits_per_sample = get_le16(pb); /* depth */
de6d9b64 315 tag1 = get_le32(pb);
bb270c08 316 url_fskip(pb, 20);
0ffd77b9
MN
317// av_log(NULL, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
318 size= sizeX;
bb270c08
DB
319 if (size > 40) {
320 st->codec->extradata_size = size - 40;
321 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
322 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
323 }
5e29abf8
RT
324
325 /* Extract palette from extradata if bpp <= 8 */
326 /* This code assumes that extradata contains only palette */
327 /* This is true for all paletted codecs implemented in ffmpeg */
01f4895c
MN
328 if (st->codec->extradata_size && (st->codec->bits_per_sample <= 8)) {
329 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
5e29abf8 330#ifdef WORDS_BIGENDIAN
01f4895c
MN
331 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
332 st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
5e29abf8 333#else
01f4895c
MN
334 memcpy(st->codec->palctrl->palette, st->codec->extradata,
335 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
5e29abf8 336#endif
01f4895c 337 st->codec->palctrl->palette_changed = 1;
5e29abf8
RT
338 }
339
01f4895c 340 st->codec->codec_tag = tag1;
bb270c08 341 st->codec->codec_id = codec_get_id(codec_bmp_tags, tag1);
afbb5ce4 342 if(tag1 == MKTAG('D', 'V', 'R', ' '))
57004ff1 343 st->need_parsing = AVSTREAM_PARSE_FULL;
de6d9b64
FB
344 }
345 pos2 = url_ftell(pb);
346 url_fskip(pb, gsize - (pos2 - pos1 + 24));
de6d9b64
FB
347 } else if (!memcmp(&g, &comment_header, sizeof(GUID))) {
348 int len1, len2, len3, len4, len5;
349
350 len1 = get_le16(pb);
351 len2 = get_le16(pb);
352 len3 = get_le16(pb);
353 len4 = get_le16(pb);
354 len5 = get_le16(pb);
4e15cc8b
MN
355 get_str16_nolen(pb, len1, s->title , sizeof(s->title));
356 get_str16_nolen(pb, len2, s->author , sizeof(s->author));
de6d9b64 357 get_str16_nolen(pb, len3, s->copyright, sizeof(s->copyright));
4e15cc8b 358 get_str16_nolen(pb, len4, s->comment , sizeof(s->comment));
bb270c08 359 url_fskip(pb, len5);
0e3b6a6f
RM
360 } else if (!memcmp(&g, &stream_bitrate_guid, sizeof(GUID))) {
361 int stream_count = get_le16(pb);
362 int j;
363
364// av_log(NULL, AV_LOG_ERROR, "stream bitrate properties\n");
365// av_log(NULL, AV_LOG_ERROR, "streams %d\n", streams);
366 for(j = 0; j < stream_count; j++) {
367 int flags, bitrate, stream_id;
368
369 flags= get_le16(pb);
370 bitrate= get_le32(pb);
371 stream_id= (flags & 0x7f);
372// av_log(NULL, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate);
a9054d91 373 asf->stream_bitrates[stream_id]= bitrate;
0e3b6a6f 374 }
d13431cd
KK
375 } else if (!memcmp(&g, &extended_content_header, sizeof(GUID))) {
376 int desc_count, i;
377
378 desc_count = get_le16(pb);
379 for(i=0;i<desc_count;i++)
380 {
052aa2ad
SH
381 int name_len,value_type,value_len;
382 uint64_t value_num = 0;
d045b8c1 383 char name[1024];
d13431cd
KK
384
385 name_len = get_le16(pb);
d045b8c1 386 get_str16_nolen(pb, name_len, name, sizeof(name));
d13431cd
KK
387 value_type = get_le16(pb);
388 value_len = get_le16(pb);
389 if ((value_type == 0) || (value_type == 1)) // unicode or byte
390 {
5e2a4855
MN
391 if (!strcmp(name,"WM/AlbumTitle")) get_str16_nolen(pb, value_len, s->album, sizeof(s->album));
392 else if(!strcmp(name,"WM/Genre" )) get_str16_nolen(pb, value_len, s->genre, sizeof(s->genre));
6ec14b33 393 else if(!strcmp(name,"WM/Track") && s->track == 0) {
629272d8
PB
394 char track[8];
395 get_str16_nolen(pb, value_len, track, sizeof(track));
396 s->track = strtol(track, NULL, 10) + 1;
397 }
398 else if(!strcmp(name,"WM/TrackNumber")) {
399 char track[8];
400 get_str16_nolen(pb, value_len, track, sizeof(track));
401 s->track = strtol(track, NULL, 10);
402 }
5e2a4855 403 else url_fskip(pb, value_len);
d13431cd 404 }
724dc20c 405 if ((value_type >= 2) && (value_type <= 5)) // boolean or DWORD or QWORD or WORD
d13431cd 406 {
30e88789 407 value_num= get_value(pb, value_type);
6ec14b33 408 if (!strcmp(name,"WM/Track" ) && s->track == 0) s->track = value_num + 1;
4e15cc8b 409 if (!strcmp(name,"WM/TrackNumber")) s->track = value_num;
d13431cd 410 }
d13431cd 411 }
30e88789
MN
412 } else if (!memcmp(&g, &metadata_header, sizeof(GUID))) {
413 int n, stream_num, name_len, value_len, value_type, value_num;
414 n = get_le16(pb);
415
416 for(i=0;i<n;i++) {
417 char name[1024];
418
419 get_le16(pb); //lang_list_index
420 stream_num= get_le16(pb);
421 name_len= get_le16(pb);
422 value_type= get_le16(pb);
423 value_len= get_le32(pb);
424
425 get_str16_nolen(pb, name_len, name, sizeof(name));
426//av_log(NULL, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
755bfeab 427 value_num= get_le16(pb);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere
30e88789
MN
428 url_fskip(pb, value_len - 2);
429
430 if(stream_num<128){
431 if (!strcmp(name, "AspectRatioX")) dar[stream_num].num= value_num;
432 else if(!strcmp(name, "AspectRatioY")) dar[stream_num].den= value_num;
433 }
434 }
88141c91
MN
435 } else if (!memcmp(&g, &ext_stream_header, sizeof(GUID))) {
436 int ext_len, payload_ext_ct, stream_ct;
d8470737 437 uint32_t ext_d, leak_rate, stream_num;
1bd86246 438 int64_t pos_ex_st;
88141c91
MN
439 pos_ex_st = url_ftell(pb);
440
de3ae959
MN
441 get_le64(pb); // starttime
442 get_le64(pb); // endtime
d8470737 443 leak_rate = get_le32(pb); // leak-datarate
de3ae959
MN
444 get_le32(pb); // bucket-datasize
445 get_le32(pb); // init-bucket-fullness
446 get_le32(pb); // alt-leak-datarate
447 get_le32(pb); // alt-bucket-datasize
448 get_le32(pb); // alt-init-bucket-fullness
449 get_le32(pb); // max-object-size
450 get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
d8470737 451 stream_num = get_le16(pb); // stream-num
de3ae959
MN
452 get_le16(pb); // stream-language-id-index
453 get_le64(pb); // avg frametime in 100ns units
454 stream_ct = get_le16(pb); //stream-name-count
455 payload_ext_ct = get_le16(pb); //payload-extension-system-count
88141c91 456
d8470737
ZM
457 if (stream_num < 128)
458 bitrate[stream_num] = leak_rate;
459
88141c91
MN
460 for (i=0; i<stream_ct; i++){
461 get_le16(pb);
462 ext_len = get_le16(pb);
463 url_fseek(pb, ext_len, SEEK_CUR);
464 }
465
466 for (i=0; i<payload_ext_ct; i++){
467 get_guid(pb, &g);
468 ext_d=get_le16(pb);
469 ext_len=get_le32(pb);
470 url_fseek(pb, ext_len, SEEK_CUR);
471 }
472
473 // there could be a optional stream properties object to follow
474 // if so the next iteration will pick it up
de6d9b64
FB
475 } else if (!memcmp(&g, &head1_guid, sizeof(GUID))) {
476 int v1, v2;
477 get_guid(pb, &g);
478 v1 = get_le32(pb);
479 v2 = get_le16(pb);
88141c91 480#if 0
de6d9b64
FB
481 } else if (!memcmp(&g, &codec_comment_header, sizeof(GUID))) {
482 int len, v1, n, num;
483 char str[256], *q;
484 char tag[16];
485
486 get_guid(pb, &g);
487 print_guid(&g);
2a10020b 488
de6d9b64
FB
489 n = get_le32(pb);
490 for(i=0;i<n;i++) {
491 num = get_le16(pb); /* stream number */
492 get_str16(pb, str, sizeof(str));
493 get_str16(pb, str, sizeof(str));
494 len = get_le16(pb);
495 q = tag;
496 while (len > 0) {
497 v1 = get_byte(pb);
498 if ((q - tag) < sizeof(tag) - 1)
499 *q++ = v1;
500 len--;
501 }
502 *q = '\0';
503 }
504#endif
505 } else if (url_feof(pb)) {
506 goto fail;
507 } else {
508 url_fseek(pb, gsize - 24, SEEK_CUR);
509 }
510 }
511 get_guid(pb, &g);
512 get_le64(pb);
513 get_byte(pb);
514 get_byte(pb);
2141dc37
ZK
515 if (url_feof(pb))
516 goto fail;
517 asf->data_offset = url_ftell(pb);
de6d9b64
FB
518 asf->packet_size_left = 0;
519
30e88789
MN
520
521 for(i=0; i<128; i++){
522 int stream_num= asf->asfid2avid[i];
d8470737 523 if(stream_num>=0){
30e88789 524 AVCodecContext *codec= s->streams[stream_num]->codec;
d8470737
ZM
525 if (!codec->bit_rate)
526 codec->bit_rate = bitrate[i];
527 if (dar[i].num > 0 && dar[i].den > 0)
18d915dd
ZM
528 av_reduce(&codec->sample_aspect_ratio.num,
529 &codec->sample_aspect_ratio.den,
530 dar[i].num, dar[i].den, INT_MAX);
30e88789
MN
531//av_log(NULL, AV_LOG_ERROR, "dar %d:%d sar=%d:%d\n", dar[i].num, dar[i].den, codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
532 }
533 }
534
de6d9b64
FB
535 return 0;
536
537 fail:
4c3dff6d 538 for(i=0;i<s->nb_streams;i++) {
de6d9b64 539 AVStream *st = s->streams[i];
bb270c08
DB
540 if (st) {
541 av_free(st->priv_data);
01f4895c 542 av_free(st->codec->extradata);
bb270c08 543 }
1ea4f593 544 av_free(st);
de6d9b64 545 }
de6d9b64
FB
546 return -1;
547}
548
2a10020b
ZK
549#define DO_2BITS(bits, var, defval) \
550 switch (bits & 3) \
551 { \
552 case 3: var = get_le32(pb); rsize += 4; break; \
553 case 2: var = get_le16(pb); rsize += 2; break; \
554 case 1: var = get_byte(pb); rsize++; break; \
555 default: var = defval; break; \
556 }
557
f7835507
MN
558/**
559 *
560 * @return <0 in case of an error
561 */
de6d9b64
FB
562static int asf_get_packet(AVFormatContext *s)
563{
564 ASFContext *asf = s->priv_data;
565 ByteIOContext *pb = &s->pb;
2a10020b 566 uint32_t packet_length, padsize;
0c0d17f3 567 int rsize = 8;
0fd9e6f3
MN
568 int c, d, e, off;
569
570 off= (url_ftell(&s->pb) - s->data_offset) % asf->packet_size + 3;
571
572 c=d=e=-1;
573 while(off-- > 0){
574 c=d; d=e;
575 e= get_byte(pb);
576 if(c == 0x82 && !d && !e)
577 break;
578 }
115329f1 579
1359c2d4 580 if (c != 0x82) {
5acdd6e6 581 if (!url_feof(pb))
bb270c08 582 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
2a10020b 583 }
0c0d17f3 584 if ((c & 0x8f) == 0x82) {
0fd9e6f3 585 if (d || e) {
5acdd6e6 586 if (!url_feof(pb))
bb270c08 587 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
f7835507 588 return -1;
bb270c08 589 }
0c0d17f3 590 c= get_byte(pb);
0fd9e6f3 591 d= get_byte(pb);
0c0d17f3
MN
592 rsize+=3;
593 }else{
594 url_fseek(pb, -1, SEEK_CUR); //FIXME
de6d9b64 595 }
2a10020b 596
0c0d17f3
MN
597 asf->packet_flags = c;
598 asf->packet_property = d;
2a10020b
ZK
599
600 DO_2BITS(asf->packet_flags >> 5, packet_length, asf->packet_size);
601 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
602 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
603
5b11e081
MN
604 //the following checks prevent overflows and infinite loops
605 if(packet_length >= (1U<<29)){
606 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb));
ceba96cb 607 return -1;
5b11e081 608 }
92216453 609 if(padsize >= packet_length){
5b11e081 610 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, url_ftell(pb));
ceba96cb 611 return -1;
5b11e081
MN
612 }
613
2a10020b 614 asf->packet_timestamp = get_le32(pb);
de6d9b64 615 get_le16(pb); /* duration */
2141dc37 616 // rsize has at least 11 bytes which have to be present
2a10020b
ZK
617
618 if (asf->packet_flags & 0x01) {
bb270c08 619 asf->packet_segsizetype = get_byte(pb); rsize++;
2a10020b
ZK
620 asf->packet_segments = asf->packet_segsizetype & 0x3f;
621 } else {
bb270c08 622 asf->packet_segments = 1;
2a10020b
ZK
623 asf->packet_segsizetype = 0x80;
624 }
625 asf->packet_size_left = packet_length - padsize - rsize;
acbe6cfa
ZK
626 if (packet_length < asf->hdr.min_pktsize)
627 padsize += asf->hdr.min_pktsize - packet_length;
2a10020b 628 asf->packet_padsize = padsize;
de6d9b64 629#ifdef DEBUG
2a10020b 630 printf("packet: size=%d padsize=%d left=%d\n", asf->packet_size, asf->packet_padsize, asf->packet_size_left);
de6d9b64 631#endif
de6d9b64
FB
632 return 0;
633}
634
ae60a857
MN
635/**
636 *
637 * @return <0 if error
638 */
639static int asf_read_frame_header(AVFormatContext *s){
640 ASFContext *asf = s->priv_data;
641 ByteIOContext *pb = &s->pb;
642 int rsize = 1;
643 int num = get_byte(pb);
559a55ad 644 int64_t ts0, ts1;
ae60a857
MN
645
646 asf->packet_segments--;
647 asf->packet_key_frame = num >> 7;
648 asf->stream_index = asf->asfid2avid[num & 0x7f];
649 // sequence should be ignored!
650 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
651 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
652 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
653//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);
654 if (asf->packet_replic_size >= 8) {
655 asf->packet_obj_size = get_le32(pb);
656 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
657 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
658 return -1;
659 }
660 asf->packet_frag_timestamp = get_le32(pb); // timestamp
559a55ad
MN
661 if(asf->packet_replic_size >= 8+38+4){
662// for(i=0; i<asf->packet_replic_size-8; i++)
663// av_log(s, AV_LOG_DEBUG, "%02X ",get_byte(pb));
664// av_log(s, AV_LOG_DEBUG, "\n");
665 url_fskip(pb, 10);
666 ts0= get_le64(pb);
667 ts1= get_le64(pb);
668 url_fskip(pb, 12);
669 get_le32(pb);
670 url_fskip(pb, asf->packet_replic_size - 8 - 38 - 4);
671 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
672 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
673 }else
674 url_fskip(pb, asf->packet_replic_size - 8);
ae60a857
MN
675 rsize += asf->packet_replic_size; // FIXME - check validity
676 } else if (asf->packet_replic_size==1){
677 // multipacket - frag_offset is begining timestamp
678 asf->packet_time_start = asf->packet_frag_offset;
679 asf->packet_frag_offset = 0;
680 asf->packet_frag_timestamp = asf->packet_timestamp;
681
682 asf->packet_time_delta = get_byte(pb);
683 rsize++;
684 }else if(asf->packet_replic_size!=0){
685 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
686 return -1;
687 }
688 if (asf->packet_flags & 0x01) {
689 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
13f7e4b9
MN
690 if(asf->packet_frag_size > asf->packet_size_left - rsize){
691 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n");
692 return -1;
693 }
ae60a857
MN
694 //printf("Fragsize %d\n", asf->packet_frag_size);
695 } else {
696 asf->packet_frag_size = asf->packet_size_left - rsize;
697 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
698 }
699 if (asf->packet_replic_size == 1) {
700 asf->packet_multi_size = asf->packet_frag_size;
701 if (asf->packet_multi_size > asf->packet_size_left)
702 return -1;
703 }
704 asf->packet_size_left -= rsize;
705 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
706
707 return 0;
708}
709
de6d9b64
FB
710static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
711{
712 ASFContext *asf = s->priv_data;
2a10020b 713 ASFStream *asf_st = 0;
de6d9b64 714 ByteIOContext *pb = &s->pb;
1359c2d4 715 //static int pc = 0;
2a10020b 716 for (;;) {
ceba96cb 717 if(url_feof(pb))
6f3e0b21 718 return AVERROR(EIO);
bb270c08
DB
719 if (asf->packet_size_left < FRAME_HEADER_SIZE
720 || asf->packet_segments < 1) {
721 //asf->packet_size_left <= asf->packet_padsize) {
722 int ret = asf->packet_size_left + asf->packet_padsize;
949b1a13 723 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
5b11e081 724 assert(ret>=0);
bb270c08
DB
725 /* fail safe */
726 url_fskip(pb, ret);
b04d5d31 727
82b9e4a2 728 asf->packet_pos= url_ftell(&s->pb);
b6eaae39
KED
729 if (asf->data_object_size != (uint64_t)-1 &&
730 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
6f3e0b21 731 return AVERROR(EIO); /* Do not exceed the size of the data object */
bb270c08
DB
732 ret = asf_get_packet(s);
733 //printf("READ ASF PACKET %d r:%d c:%d\n", ret, asf->packet_size_left, pc++);
ceba96cb
MN
734 if (ret < 0)
735 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
2141dc37 736 asf->packet_time_start = 0;
2a10020b 737 continue;
bb270c08
DB
738 }
739 if (asf->packet_time_start == 0) {
ae60a857
MN
740 if(asf_read_frame_header(s) < 0){
741 asf->packet_segments= 0;
236116cb 742 continue;
1305a9d5 743 }
bb270c08 744 if (asf->stream_index < 0
f3356e9c
MN
745 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
746 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
747 ) {
1359c2d4 748 asf->packet_time_start = 0;
bb270c08
DB
749 /* unhandled packet (should not happen) */
750 url_fskip(pb, asf->packet_frag_size);
751 asf->packet_size_left -= asf->packet_frag_size;
b9866ebc 752 if(asf->stream_index < 0)
ae60a857 753 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
1359c2d4 754 continue;
bb270c08
DB
755 }
756 asf->asf_st = s->streams[asf->stream_index]->priv_data;
757 }
758 asf_st = asf->asf_st;
759
bb270c08
DB
760 if (asf->packet_replic_size == 1) {
761 // frag_offset is here used as the begining timestamp
762 asf->packet_frag_timestamp = asf->packet_time_start;
763 asf->packet_time_start += asf->packet_time_delta;
764 asf->packet_obj_size = asf->packet_frag_size = get_byte(pb);
765 asf->packet_size_left--;
2141dc37 766 asf->packet_multi_size--;
bb270c08
DB
767 if (asf->packet_multi_size < asf->packet_obj_size)
768 {
769 asf->packet_time_start = 0;
770 url_fskip(pb, asf->packet_multi_size);
771 asf->packet_size_left -= asf->packet_multi_size;
2141dc37 772 continue;
bb270c08
DB
773 }
774 asf->packet_multi_size -= asf->packet_obj_size;
775 //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);
776 }
60ff1c44
MN
777 if( /*asf->packet_frag_size == asf->packet_obj_size*/
778 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
779 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
780 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
781 asf_st->frag_offset, asf->packet_frag_size,
782 asf->packet_obj_size, asf_st->pkt.size);
783 asf->packet_obj_size= asf_st->pkt.size;
784 }
785
f8f0a0bd
MN
786 if ( asf_st->pkt.size != asf->packet_obj_size
787 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
200026aa
MN
788 if(asf_st->pkt.data){
789 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
790 asf_st->frag_offset = 0;
791 av_free_packet(&asf_st->pkt);
792 }
bb270c08
DB
793 /* new packet */
794 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
795 asf_st->seq = asf->packet_seq;
796 asf_st->pkt.pts = asf->packet_frag_timestamp;
797 asf_st->pkt.stream_index = asf->stream_index;
115329f1
DB
798 asf_st->pkt.pos =
799 asf_st->packet_pos= asf->packet_pos;
800//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
82b9e4a2 801//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY,
01f4895c 802//s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size);
bb270c08
DB
803 if (s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO)
804 asf->packet_key_frame = 1;
805 if (asf->packet_key_frame)
806 asf_st->pkt.flags |= PKT_FLAG_KEY;
807 }
808
809 /* read data */
810 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
811 // asf->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
812 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
813 asf->packet_size_left -= asf->packet_frag_size;
814 if (asf->packet_size_left < 0)
2141dc37 815 continue;
4c71d727
MN
816
817 if( asf->packet_frag_offset >= asf_st->pkt.size
818 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
819 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
820 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
821 continue;
822 }
823
bb270c08
DB
824 get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
825 asf->packet_frag_size);
826 asf_st->frag_offset += asf->packet_frag_size;
827 /* test if whole packet is read */
828 if (asf_st->frag_offset == asf_st->pkt.size) {
da0b94f5
MN
829 //workaround for macroshit radio DVR-MS files
830 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
831 && asf_st->pkt.size > 100){
832 int i;
833 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
834 if(i == asf_st->pkt.size){
835 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
836 asf_st->frag_offset = 0;
837 av_free_packet(&asf_st->pkt);
838 continue;
839 }
840 }
841
bb270c08
DB
842 /* return packet */
843 if (asf_st->ds_span > 1) {
05219463 844 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
b43387d4 845 av_log(s, AV_LOG_ERROR, "pkt.size != ds_packet_size * ds_span (%d %d %d)\n", asf_st->pkt.size, asf_st->ds_packet_size, asf_st->ds_span);
05219463 846 }else{
bb270c08 847 /* packet descrambling */
191e8ca7 848 uint8_t *newdata = av_malloc(asf_st->pkt.size);
bb270c08
DB
849 if (newdata) {
850 int offset = 0;
851 while (offset < asf_st->pkt.size) {
852 int off = offset / asf_st->ds_chunk_size;
853 int row = off / asf_st->ds_span;
854 int col = off % asf_st->ds_span;
855 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
856 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
05219463
MN
857
858 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
859 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
bb270c08
DB
860 memcpy(newdata + offset,
861 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
862 asf_st->ds_chunk_size);
863 offset += asf_st->ds_chunk_size;
864 }
865 av_free(asf_st->pkt.data);
866 asf_st->pkt.data = newdata;
867 }
05219463 868 }
bb270c08
DB
869 }
870 asf_st->frag_offset = 0;
b83e83b9 871 *pkt= asf_st->pkt;
bb270c08
DB
872 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
873 asf_st->pkt.size = 0;
874 asf_st->pkt.data = 0;
875 break; // packet completed
876 }
de6d9b64 877 }
de6d9b64
FB
878 return 0;
879}
880
29a7b8ef
RP
881static void asf_reset_header(AVFormatContext *s);
882
de6d9b64
FB
883static int asf_read_close(AVFormatContext *s)
884{
de6d9b64
FB
885 int i;
886
29a7b8ef 887 asf_reset_header(s);
de6d9b64 888 for(i=0;i<s->nb_streams;i++) {
bb270c08
DB
889 AVStream *st = s->streams[i];
890 av_free(st->priv_data);
1ae7518d 891 av_free(st->codec->palctrl);
de6d9b64 892 }
de6d9b64
FB
893 return 0;
894}
895
38376f00
KK
896// Added to support seeking after packets have been read
897// If information is not reset, read_packet fails due to
898// leftover information from previous reads
899static void asf_reset_header(AVFormatContext *s)
900{
901 ASFContext *asf = s->priv_data;
82b9e4a2
MN
902 ASFStream *asf_st;
903 int i;
38376f00
KK
904
905 asf->packet_nb_frames = 0;
38376f00
KK
906 asf->packet_size_left = 0;
907 asf->packet_segments = 0;
908 asf->packet_flags = 0;
909 asf->packet_property = 0;
910 asf->packet_timestamp = 0;
911 asf->packet_segsizetype = 0;
912 asf->packet_segments = 0;
913 asf->packet_seq = 0;
914 asf->packet_replic_size = 0;
915 asf->packet_key_frame = 0;
916 asf->packet_padsize = 0;
917 asf->packet_frag_offset = 0;
918 asf->packet_frag_size = 0;
919 asf->packet_frag_timestamp = 0;
920 asf->packet_multi_size = 0;
921 asf->packet_obj_size = 0;
922 asf->packet_time_delta = 0;
923 asf->packet_time_start = 0;
115329f1 924
82b9e4a2
MN
925 for(i=0; i<s->nb_streams; i++){
926 asf_st= s->streams[i]->priv_data;
927 av_free_packet(&asf_st->pkt);
928 asf_st->frag_offset=0;
929 asf_st->seq=0;
930 }
931 asf->asf_st= NULL;
38376f00
KK
932}
933
8d14a25c 934static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
38376f00
KK
935{
936 ASFContext *asf = s->priv_data;
937 AVPacket pkt1, *pkt = &pkt1;
82b9e4a2 938 ASFStream *asf_st;
580fb5e7 939 int64_t pts;
82b9e4a2 940 int64_t pos= *ppos;
3e9245a9
MN
941 int i;
942 int64_t start_pos[s->nb_streams];
115329f1 943
3e9245a9
MN
944 for(i=0; i<s->nb_streams; i++){
945 start_pos[i]= pos;
946 }
115329f1 947
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948 pos= (pos+asf->packet_size-1-s->data_offset)/asf->packet_size*asf->packet_size+ s->data_offset;
949 *ppos= pos;
950 url_fseek(&s->pb, pos, SEEK_SET);
115329f1 951
82b9e4a2 952//printf("asf_read_pts\n");
82b9e4a2 953 asf_reset_header(s);
3e9245a9 954 for(;;){
82b9e4a2 955 if (av_read_frame(s, pkt) < 0){
0b93103a 956 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
bb270c08 957 return AV_NOPTS_VALUE;
82b9e4a2 958 }
115329f1 959
38cf2a72 960 pts= pkt->pts;
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961
962 av_free_packet(pkt);
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963 if(pkt->flags&PKT_FLAG_KEY){
964 i= pkt->stream_index;
965
966 asf_st= s->streams[i]->priv_data;
967
0fd9e6f3 968// assert((asf_st->packet_pos - s->data_offset) % asf->packet_size == 0);
8d14a25c 969 pos= asf_st->packet_pos;
09646bab 970
52e54612 971 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
8d14a25c 972 start_pos[i]= asf_st->packet_pos + 1;
115329f1 973
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974 if(pkt->stream_index == stream_index)
975 break;
976 }
977 }
978
979 *ppos= pos;
949b1a13 980//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
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981
982 return pts;
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983}
984
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985static void asf_build_simple_index(AVFormatContext *s, int stream_index)
986{
987 GUID g;
988 ASFContext *asf = s->priv_data;
989 int64_t gsize, itime;
990 int64_t pos, current_pos, index_pts;
991 int i;
992 int pct,ict;
993
994 current_pos = url_ftell(&s->pb);
995
996 url_fseek(&s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
997 get_guid(&s->pb, &g);
998 if (!memcmp(&g, &index_guid, sizeof(GUID))) {
999 gsize = get_le64(&s->pb);
1000 get_guid(&s->pb, &g);
1001 itime=get_le64(&s->pb);
1002 pct=get_le32(&s->pb);
1003 ict=get_le32(&s->pb);
ccd3228e 1004 av_log(NULL, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
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1005
1006 for (i=0;i<ict;i++){
1007 int pktnum=get_le32(&s->pb);
1008 int pktct =get_le16(&s->pb);
1009 av_log(NULL, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct);
1010
1011 pos=s->data_offset + asf->packet_size*(int64_t)pktnum;
1012 index_pts=av_rescale(itime, i, 10000);
1013
1014 av_add_index_entry(s->streams[stream_index], pos, index_pts, asf->packet_size, 0, AVINDEX_KEYFRAME);
1015 }
52e54612 1016 asf->index_read= 1;
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1017 }
1018 url_fseek(&s->pb, current_pos, SEEK_SET);
1019}
1020
3ba1438d 1021static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
2a10020b 1022{
afda223c 1023 ASFContext *asf = s->priv_data;
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1024 AVStream *st = s->streams[stream_index];
1025 int64_t pos;
1026 int index;
115329f1 1027
a602556e 1028 if (asf->packet_size <= 0)
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1029 return -1;
1030
52e54612 1031 if (!asf->index_read)
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1032 asf_build_simple_index(s, stream_index);
1033
52e54612 1034 if(!(asf->index_read && st->index_entries)){
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1035 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
1036 return -1;
1037 }else{
1038 index= av_index_search_timestamp(st, pts, flags);
1039 if(index<0)
1040 return -1;
1041
1042 /* find the position */
1043 pos = st->index_entries[index].pos;
1044 pts = st->index_entries[index].timestamp;
1045
1046 // various attempts to find key frame have failed so far
1047 // asf_reset_header(s);
1048 // url_fseek(&s->pb, pos, SEEK_SET);
1049 // key_pos = pos;
1050 // for(i=0;i<16;i++){
1051 // pos = url_ftell(&s->pb);
1052 // if (av_read_frame(s, &pkt) < 0){
1053 // av_log(s, AV_LOG_INFO, "seek failed\n");
1054 // return -1;
1055 // }
1056 // asf_st = s->streams[stream_index]->priv_data;
1057 // pos += st->parser->frame_offset;
1058 //
1059 // if (pkt.size > b) {
1060 // b = pkt.size;
1061 // key_pos = pos;
1062 // }
1063 //
1064 // av_free_packet(&pkt);
1065 // }
1066
1067 /* do the seek */
ccd3228e 1068 av_log(NULL, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
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1069 url_fseek(&s->pb, pos, SEEK_SET);
1070 }
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1071 asf_reset_header(s);
1072 return 0;
2a10020b
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1073}
1074
ff70e601 1075AVInputFormat asf_demuxer = {
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1076 "asf",
1077 "asf format",
1078 sizeof(ASFContext),
1079 asf_probe,
1080 asf_read_header,
1081 asf_read_packet,
1082 asf_read_close,
2a10020b 1083 asf_read_seek,
8d14a25c 1084 asf_read_pts,
c9a65ca8 1085};