Fix wrong error message.
[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"
72be7db4 26#include "asfcrypt.h"
de6d9b64 27
49ce700a
BA
28extern void ff_mms_set_stream_selection(URLContext *h, AVFormatContext *format);
29
580fb5e7
MN
30#undef NDEBUG
31#include <assert.h>
32
615b92fd 33#define FRAME_HEADER_SIZE 17
115329f1 34// Fix Me! FRAME_HEADER_SIZE may be different.
615b92fd 35
de6d9b64 36static const GUID index_guid = {
24c14d6d 37 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
de6d9b64
FB
38};
39
0e3b6a6f
RM
40static const GUID stream_bitrate_guid = { /* (http://get.to/sdp) */
41 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
42};
de6d9b64
FB
43/**********************************/
44/* decoding */
45
46//#define DEBUG
47
48#ifdef DEBUG
5082f759
FR
49#define PRINT_IF_GUID(g,cmp) \
50if (!memcmp(g, &cmp, sizeof(GUID))) \
51 printf("(GUID: %s) ", #cmp)
52
de6d9b64
FB
53static void print_guid(const GUID *g)
54{
55 int i;
5082f759
FR
56 PRINT_IF_GUID(g, asf_header);
57 else PRINT_IF_GUID(g, file_header);
58 else PRINT_IF_GUID(g, stream_header);
59 else PRINT_IF_GUID(g, audio_stream);
60 else PRINT_IF_GUID(g, audio_conceal_none);
61 else PRINT_IF_GUID(g, video_stream);
62 else PRINT_IF_GUID(g, video_conceal_none);
ae38261e 63 else PRINT_IF_GUID(g, command_stream);
5082f759
FR
64 else PRINT_IF_GUID(g, comment_header);
65 else PRINT_IF_GUID(g, codec_comment_header);
66 else PRINT_IF_GUID(g, codec_comment1_header);
67 else PRINT_IF_GUID(g, data_header);
68 else PRINT_IF_GUID(g, index_guid);
69 else PRINT_IF_GUID(g, head1_guid);
70 else PRINT_IF_GUID(g, head2_guid);
71 else PRINT_IF_GUID(g, my_guid);
88141c91
MN
72 else PRINT_IF_GUID(g, ext_stream_header);
73 else PRINT_IF_GUID(g, extended_content_header);
74 else PRINT_IF_GUID(g, ext_stream_embed_stream_header);
75 else PRINT_IF_GUID(g, ext_stream_audio_stream);
30e88789 76 else PRINT_IF_GUID(g, metadata_header);
0e3b6a6f 77 else PRINT_IF_GUID(g, stream_bitrate_guid);
5082f759
FR
78 else
79 printf("(GUID: unknown) ");
24c14d6d
MN
80 for(i=0;i<16;i++)
81 printf(" 0x%02x,", (*g)[i]);
de6d9b64
FB
82 printf("}\n");
83}
6df84c3a 84#undef PRINT_IF_GUID
de6d9b64
FB
85#endif
86
87static void get_guid(ByteIOContext *s, GUID *g)
88{
24c14d6d
MN
89 assert(sizeof(*g) == 16);
90 get_buffer(s, g, sizeof(*g));
de6d9b64
FB
91}
92
93#if 0
94static void get_str16(ByteIOContext *pb, char *buf, int buf_size)
95{
96 int len, c;
97 char *q;
98
99 len = get_le16(pb);
100 q = buf;
101 while (len > 0) {
102 c = get_le16(pb);
103 if ((q - buf) < buf_size - 1)
104 *q++ = c;
105 len--;
106 }
107 *q = '\0';
108}
109#endif
110
49ce700a
BA
111static int is_mms(ByteIOContext *pb)
112{
113 return url_fileno(pb) && url_fileno(pb)->prot &&
114 !strcmp(url_fileno(pb)->prot->name, "mmsh");
115}
116
de6d9b64
FB
117static void get_str16_nolen(ByteIOContext *pb, int len, char *buf, int buf_size)
118{
db5c43b4
ZM
119 char* q = buf;
120 len /= 2;
121 while (len--) {
122 uint8_t tmp;
123 PUT_UTF8(get_le16(pb), tmp, if (q - buf < buf_size - 1) *q++ = tmp;)
de6d9b64
FB
124 }
125 *q = '\0';
126}
127
c9a65ca8
FB
128static int asf_probe(AVProbeData *pd)
129{
c9a65ca8 130 /* check file header */
24c14d6d 131 if (!memcmp(pd->buf, &asf_header, sizeof(GUID)))
c9a65ca8
FB
132 return AVPROBE_SCORE_MAX;
133 else
134 return 0;
135}
136
30e88789
MN
137static int get_value(ByteIOContext *pb, int type){
138 switch(type){
139 case 2: return get_le32(pb);
140 case 3: return get_le32(pb);
141 case 4: return get_le64(pb);
142 case 5: return get_le16(pb);
143 default:return INT_MIN;
144 }
145}
146
de6d9b64
FB
147static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
148{
c9a65ca8 149 ASFContext *asf = s->priv_data;
de6d9b64
FB
150 GUID g;
151 ByteIOContext *pb = &s->pb;
152 AVStream *st;
153 ASFStream *asf_st;
e095026a 154 int size, i;
0c1a9eda 155 int64_t gsize;
30e88789 156 AVRational dar[128];
d8470737 157 uint32_t bitrate[128];
30e88789
MN
158
159 memset(dar, 0, sizeof(dar));
d8470737 160 memset(bitrate, 0, sizeof(bitrate));
de6d9b64 161
de6d9b64
FB
162 get_guid(pb, &g);
163 if (memcmp(&g, &asf_header, sizeof(GUID)))
164 goto fail;
165 get_le64(pb);
166 get_le32(pb);
167 get_byte(pb);
168 get_byte(pb);
2141dc37 169 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
de6d9b64
FB
170 for(;;) {
171 get_guid(pb, &g);
172 gsize = get_le64(pb);
173#ifdef DEBUG
949b1a13 174 printf("%08"PRIx64": ", url_ftell(pb) - 24);
de6d9b64 175 print_guid(&g);
949b1a13 176 printf(" size=0x%"PRIx64"\n", gsize);
de6d9b64 177#endif
09d9672a
MN
178 if (!memcmp(&g, &data_header, sizeof(GUID))) {
179 asf->data_object_offset = url_ftell(pb);
180 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
181 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
182 asf->data_object_size = gsize - 24;
183 } else {
184 asf->data_object_size = (uint64_t)-1;
185 }
186 break;
187 }
de6d9b64
FB
188 if (gsize < 24)
189 goto fail;
190 if (!memcmp(&g, &file_header, sizeof(GUID))) {
2a10020b 191 get_guid(pb, &asf->hdr.guid);
bb270c08
DB
192 asf->hdr.file_size = get_le64(pb);
193 asf->hdr.create_time = get_le64(pb);
6bb2a2df 194 asf->nb_packets = get_le64(pb);
bb270c08
DB
195 asf->hdr.send_time = get_le64(pb);
196 asf->hdr.play_time = get_le64(pb);
197 asf->hdr.preroll = get_le32(pb);
198 asf->hdr.ignore = get_le32(pb);
199 asf->hdr.flags = get_le32(pb);
200 asf->hdr.min_pktsize = get_le32(pb);
201 asf->hdr.max_pktsize = get_le32(pb);
202 asf->hdr.max_bitrate = get_le32(pb);
203 asf->packet_size = asf->hdr.max_pktsize;
de6d9b64 204 } else if (!memcmp(&g, &stream_header, sizeof(GUID))) {
7ad5455c
MN
205 int type, type_specific_size, sizeX;
206 uint64_t total_size;
de6d9b64 207 unsigned int tag1;
371bf806 208 int64_t pos1, pos2, start_time;
6fea687e 209 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
2a10020b 210
de6d9b64
FB
211 pos1 = url_ftell(pb);
212
247eadca 213 st = av_new_stream(s, 0);
de6d9b64
FB
214 if (!st)
215 goto fail;
9ee91c2f 216 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
de6d9b64
FB
217 asf_st = av_mallocz(sizeof(ASFStream));
218 if (!asf_st)
219 goto fail;
220 st->priv_data = asf_st;
371bf806
MN
221 start_time = asf->hdr.preroll;
222
73fe1052
RM
223 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
224 st->duration = asf->hdr.send_time /
371bf806 225 (10000000 / 1000) - start_time;
73fe1052 226 }
de6d9b64 227 get_guid(pb, &g);
88141c91
MN
228
229 test_for_ext_stream_audio = 0;
de6d9b64
FB
230 if (!memcmp(&g, &audio_stream, sizeof(GUID))) {
231 type = CODEC_TYPE_AUDIO;
232 } else if (!memcmp(&g, &video_stream, sizeof(GUID))) {
233 type = CODEC_TYPE_VIDEO;
ae38261e
MB
234 } else if (!memcmp(&g, &command_stream, sizeof(GUID))) {
235 type = CODEC_TYPE_UNKNOWN;
88141c91
MN
236 } else if (!memcmp(&g, &ext_stream_embed_stream_header, sizeof(GUID))) {
237 test_for_ext_stream_audio = 1;
238 type = CODEC_TYPE_UNKNOWN;
de6d9b64
FB
239 } else {
240 goto fail;
241 }
242 get_guid(pb, &g);
243 total_size = get_le64(pb);
2e7973bb 244 type_specific_size = get_le32(pb);
de6d9b64 245 get_le32(pb);
bb270c08 246 st->id = get_le16(pb) & 0x7f; /* stream id */
2a10020b 247 // mapping of asf ID to AV stream ID;
247eadca 248 asf->asfid2avid[st->id] = s->nb_streams - 1;
2a10020b 249
de6d9b64 250 get_le32(pb);
88141c91
MN
251
252 if (test_for_ext_stream_audio) {
253 get_guid(pb, &g);
254 if (!memcmp(&g, &ext_stream_audio_stream, sizeof(GUID))) {
255 type = CODEC_TYPE_AUDIO;
6fea687e 256 is_dvr_ms_audio=1;
88141c91
MN
257 get_guid(pb, &g);
258 get_le32(pb);
259 get_le32(pb);
260 get_le32(pb);
261 get_guid(pb, &g);
262 get_le32(pb);
263 }
264 }
265
bb270c08 266 st->codec->codec_type = type;
de6d9b64 267 if (type == CODEC_TYPE_AUDIO) {
01f4895c 268 get_wav_header(pb, st->codec, type_specific_size);
6fea687e
JD
269 if (is_dvr_ms_audio) {
270 // codec_id and codec_tag are unreliable in dvr_ms
271 // files. Set them later by probing stream.
272 st->codec->codec_id = CODEC_ID_NONE;
273 st->codec->codec_tag = 0;
274 }
57004ff1 275 st->need_parsing = AVSTREAM_PARSE_FULL;
bb270c08
DB
276 /* We have to init the frame size at some point .... */
277 pos2 = url_ftell(pb);
b9c6d01b 278 if (gsize >= (pos2 + 8 - pos1 + 24)) {
bb270c08
DB
279 asf_st->ds_span = get_byte(pb);
280 asf_st->ds_packet_size = get_le16(pb);
281 asf_st->ds_chunk_size = get_le16(pb);
6bb2a2df
MN
282 get_le16(pb); //ds_data_size
283 get_byte(pb); //ds_silence_data
bb270c08
DB
284 }
285 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
286 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
287 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
288 if (asf_st->ds_span > 1) {
289 if (!asf_st->ds_chunk_size
05219463
MN
290 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
291 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
bb270c08
DB
292 asf_st->ds_span = 0; // disable descrambling
293 }
01f4895c 294 switch (st->codec->codec_id) {
80783dc2 295 case CODEC_ID_MP3:
01f4895c 296 st->codec->frame_size = MPA_FRAME_SIZE;
f80c1ac0
PG
297 break;
298 case CODEC_ID_PCM_S16LE:
299 case CODEC_ID_PCM_S16BE:
300 case CODEC_ID_PCM_U16LE:
301 case CODEC_ID_PCM_U16BE:
302 case CODEC_ID_PCM_S8:
303 case CODEC_ID_PCM_U8:
304 case CODEC_ID_PCM_ALAW:
305 case CODEC_ID_PCM_MULAW:
01f4895c 306 st->codec->frame_size = 1;
f80c1ac0
PG
307 break;
308 default:
309 /* This is probably wrong, but it prevents a crash later */
01f4895c 310 st->codec->frame_size = 1;
f80c1ac0
PG
311 break;
312 }
88141c91 313 } else if (type == CODEC_TYPE_VIDEO) {
bb270c08 314 get_le32(pb);
de6d9b64
FB
315 get_le32(pb);
316 get_byte(pb);
317 size = get_le16(pb); /* size */
0ffd77b9 318 sizeX= get_le32(pb); /* size */
01f4895c 319 st->codec->width = get_le32(pb);
bb270c08 320 st->codec->height = get_le32(pb);
2a10020b 321 /* not available for asf */
de6d9b64 322 get_le16(pb); /* panes */
bb270c08 323 st->codec->bits_per_sample = get_le16(pb); /* depth */
de6d9b64 324 tag1 = get_le32(pb);
bb270c08 325 url_fskip(pb, 20);
0ffd77b9
MN
326// av_log(NULL, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
327 size= sizeX;
bb270c08
DB
328 if (size > 40) {
329 st->codec->extradata_size = size - 40;
330 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
331 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
332 }
5e29abf8
RT
333
334 /* Extract palette from extradata if bpp <= 8 */
335 /* This code assumes that extradata contains only palette */
336 /* This is true for all paletted codecs implemented in ffmpeg */
01f4895c
MN
337 if (st->codec->extradata_size && (st->codec->bits_per_sample <= 8)) {
338 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
5e29abf8 339#ifdef WORDS_BIGENDIAN
01f4895c
MN
340 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
341 st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
5e29abf8 342#else
01f4895c
MN
343 memcpy(st->codec->palctrl->palette, st->codec->extradata,
344 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
5e29abf8 345#endif
01f4895c 346 st->codec->palctrl->palette_changed = 1;
5e29abf8
RT
347 }
348
01f4895c 349 st->codec->codec_tag = tag1;
bb270c08 350 st->codec->codec_id = codec_get_id(codec_bmp_tags, tag1);
afbb5ce4 351 if(tag1 == MKTAG('D', 'V', 'R', ' '))
57004ff1 352 st->need_parsing = AVSTREAM_PARSE_FULL;
de6d9b64
FB
353 }
354 pos2 = url_ftell(pb);
355 url_fskip(pb, gsize - (pos2 - pos1 + 24));
de6d9b64
FB
356 } else if (!memcmp(&g, &comment_header, sizeof(GUID))) {
357 int len1, len2, len3, len4, len5;
358
359 len1 = get_le16(pb);
360 len2 = get_le16(pb);
361 len3 = get_le16(pb);
362 len4 = get_le16(pb);
363 len5 = get_le16(pb);
4e15cc8b
MN
364 get_str16_nolen(pb, len1, s->title , sizeof(s->title));
365 get_str16_nolen(pb, len2, s->author , sizeof(s->author));
de6d9b64 366 get_str16_nolen(pb, len3, s->copyright, sizeof(s->copyright));
4e15cc8b 367 get_str16_nolen(pb, len4, s->comment , sizeof(s->comment));
bb270c08 368 url_fskip(pb, len5);
0e3b6a6f
RM
369 } else if (!memcmp(&g, &stream_bitrate_guid, sizeof(GUID))) {
370 int stream_count = get_le16(pb);
371 int j;
372
373// av_log(NULL, AV_LOG_ERROR, "stream bitrate properties\n");
374// av_log(NULL, AV_LOG_ERROR, "streams %d\n", streams);
375 for(j = 0; j < stream_count; j++) {
376 int flags, bitrate, stream_id;
377
378 flags= get_le16(pb);
379 bitrate= get_le32(pb);
380 stream_id= (flags & 0x7f);
381// av_log(NULL, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate);
a9054d91 382 asf->stream_bitrates[stream_id]= bitrate;
0e3b6a6f 383 }
d13431cd
KK
384 } else if (!memcmp(&g, &extended_content_header, sizeof(GUID))) {
385 int desc_count, i;
386
387 desc_count = get_le16(pb);
388 for(i=0;i<desc_count;i++)
389 {
052aa2ad
SH
390 int name_len,value_type,value_len;
391 uint64_t value_num = 0;
d045b8c1 392 char name[1024];
d13431cd
KK
393
394 name_len = get_le16(pb);
d045b8c1 395 get_str16_nolen(pb, name_len, name, sizeof(name));
d13431cd
KK
396 value_type = get_le16(pb);
397 value_len = get_le16(pb);
398 if ((value_type == 0) || (value_type == 1)) // unicode or byte
399 {
5e2a4855
MN
400 if (!strcmp(name,"WM/AlbumTitle")) get_str16_nolen(pb, value_len, s->album, sizeof(s->album));
401 else if(!strcmp(name,"WM/Genre" )) get_str16_nolen(pb, value_len, s->genre, sizeof(s->genre));
0d4e281c
PB
402 else if(!strcmp(name,"WM/Year" )) {
403 char year[8];
404 get_str16_nolen(pb, value_len, year, sizeof(year));
405 s->year = atoi(year);
406 }
6ec14b33 407 else if(!strcmp(name,"WM/Track") && s->track == 0) {
629272d8
PB
408 char track[8];
409 get_str16_nolen(pb, value_len, track, sizeof(track));
410 s->track = strtol(track, NULL, 10) + 1;
411 }
412 else if(!strcmp(name,"WM/TrackNumber")) {
413 char track[8];
414 get_str16_nolen(pb, value_len, track, sizeof(track));
415 s->track = strtol(track, NULL, 10);
416 }
5e2a4855 417 else url_fskip(pb, value_len);
d13431cd 418 }
724dc20c 419 if ((value_type >= 2) && (value_type <= 5)) // boolean or DWORD or QWORD or WORD
d13431cd 420 {
30e88789 421 value_num= get_value(pb, value_type);
6ec14b33 422 if (!strcmp(name,"WM/Track" ) && s->track == 0) s->track = value_num + 1;
4e15cc8b 423 if (!strcmp(name,"WM/TrackNumber")) s->track = value_num;
d13431cd 424 }
d13431cd 425 }
30e88789
MN
426 } else if (!memcmp(&g, &metadata_header, sizeof(GUID))) {
427 int n, stream_num, name_len, value_len, value_type, value_num;
428 n = get_le16(pb);
429
430 for(i=0;i<n;i++) {
431 char name[1024];
432
433 get_le16(pb); //lang_list_index
434 stream_num= get_le16(pb);
435 name_len= get_le16(pb);
436 value_type= get_le16(pb);
437 value_len= get_le32(pb);
438
439 get_str16_nolen(pb, name_len, name, sizeof(name));
440//av_log(NULL, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
755bfeab 441 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
442 url_fskip(pb, value_len - 2);
443
444 if(stream_num<128){
445 if (!strcmp(name, "AspectRatioX")) dar[stream_num].num= value_num;
446 else if(!strcmp(name, "AspectRatioY")) dar[stream_num].den= value_num;
447 }
448 }
88141c91
MN
449 } else if (!memcmp(&g, &ext_stream_header, sizeof(GUID))) {
450 int ext_len, payload_ext_ct, stream_ct;
d8470737 451 uint32_t ext_d, leak_rate, stream_num;
1bd86246 452 int64_t pos_ex_st;
88141c91
MN
453 pos_ex_st = url_ftell(pb);
454
de3ae959
MN
455 get_le64(pb); // starttime
456 get_le64(pb); // endtime
d8470737 457 leak_rate = get_le32(pb); // leak-datarate
de3ae959
MN
458 get_le32(pb); // bucket-datasize
459 get_le32(pb); // init-bucket-fullness
460 get_le32(pb); // alt-leak-datarate
461 get_le32(pb); // alt-bucket-datasize
462 get_le32(pb); // alt-init-bucket-fullness
463 get_le32(pb); // max-object-size
464 get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
d8470737 465 stream_num = get_le16(pb); // stream-num
de3ae959
MN
466 get_le16(pb); // stream-language-id-index
467 get_le64(pb); // avg frametime in 100ns units
468 stream_ct = get_le16(pb); //stream-name-count
469 payload_ext_ct = get_le16(pb); //payload-extension-system-count
88141c91 470
d8470737
ZM
471 if (stream_num < 128)
472 bitrate[stream_num] = leak_rate;
473
88141c91
MN
474 for (i=0; i<stream_ct; i++){
475 get_le16(pb);
476 ext_len = get_le16(pb);
477 url_fseek(pb, ext_len, SEEK_CUR);
478 }
479
480 for (i=0; i<payload_ext_ct; i++){
481 get_guid(pb, &g);
482 ext_d=get_le16(pb);
483 ext_len=get_le32(pb);
484 url_fseek(pb, ext_len, SEEK_CUR);
485 }
486
487 // there could be a optional stream properties object to follow
488 // if so the next iteration will pick it up
de6d9b64
FB
489 } else if (!memcmp(&g, &head1_guid, sizeof(GUID))) {
490 int v1, v2;
491 get_guid(pb, &g);
492 v1 = get_le32(pb);
493 v2 = get_le16(pb);
88141c91 494#if 0
de6d9b64
FB
495 } else if (!memcmp(&g, &codec_comment_header, sizeof(GUID))) {
496 int len, v1, n, num;
497 char str[256], *q;
498 char tag[16];
499
500 get_guid(pb, &g);
501 print_guid(&g);
2a10020b 502
de6d9b64
FB
503 n = get_le32(pb);
504 for(i=0;i<n;i++) {
505 num = get_le16(pb); /* stream number */
506 get_str16(pb, str, sizeof(str));
507 get_str16(pb, str, sizeof(str));
508 len = get_le16(pb);
509 q = tag;
510 while (len > 0) {
511 v1 = get_byte(pb);
512 if ((q - tag) < sizeof(tag) - 1)
513 *q++ = v1;
514 len--;
515 }
516 *q = '\0';
517 }
518#endif
519 } else if (url_feof(pb)) {
520 goto fail;
521 } else {
522 url_fseek(pb, gsize - 24, SEEK_CUR);
523 }
524 }
525 get_guid(pb, &g);
526 get_le64(pb);
527 get_byte(pb);
528 get_byte(pb);
2141dc37
ZK
529 if (url_feof(pb))
530 goto fail;
531 asf->data_offset = url_ftell(pb);
de6d9b64
FB
532 asf->packet_size_left = 0;
533
30e88789
MN
534
535 for(i=0; i<128; i++){
536 int stream_num= asf->asfid2avid[i];
d8470737 537 if(stream_num>=0){
30e88789 538 AVCodecContext *codec= s->streams[stream_num]->codec;
d8470737
ZM
539 if (!codec->bit_rate)
540 codec->bit_rate = bitrate[i];
541 if (dar[i].num > 0 && dar[i].den > 0)
18d915dd
ZM
542 av_reduce(&codec->sample_aspect_ratio.num,
543 &codec->sample_aspect_ratio.den,
544 dar[i].num, dar[i].den, INT_MAX);
30e88789
MN
545//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);
546 }
547 }
548
49ce700a
BA
549#ifdef CONFIG_MMSH_PROTOCOL
550 /* Give info about ourselves to the mms protocol */
551 if(is_mms(pb))
552 ff_mms_set_stream_selection(url_fileno(pb), s);
553#endif
554
de6d9b64
FB
555 return 0;
556
557 fail:
4c3dff6d 558 for(i=0;i<s->nb_streams;i++) {
de6d9b64 559 AVStream *st = s->streams[i];
bb270c08
DB
560 if (st) {
561 av_free(st->priv_data);
01f4895c 562 av_free(st->codec->extradata);
bb270c08 563 }
1ea4f593 564 av_free(st);
de6d9b64 565 }
de6d9b64
FB
566 return -1;
567}
568
2a10020b
ZK
569#define DO_2BITS(bits, var, defval) \
570 switch (bits & 3) \
571 { \
572 case 3: var = get_le32(pb); rsize += 4; break; \
573 case 2: var = get_le16(pb); rsize += 2; break; \
574 case 1: var = get_byte(pb); rsize++; break; \
575 default: var = defval; break; \
576 }
577
f7835507
MN
578/**
579 *
580 * @return <0 in case of an error
581 */
de6d9b64
FB
582static int asf_get_packet(AVFormatContext *s)
583{
584 ASFContext *asf = s->priv_data;
585 ByteIOContext *pb = &s->pb;
2a10020b 586 uint32_t packet_length, padsize;
0c0d17f3 587 int rsize = 8;
0fd9e6f3
MN
588 int c, d, e, off;
589
590 off= (url_ftell(&s->pb) - s->data_offset) % asf->packet_size + 3;
591
592 c=d=e=-1;
593 while(off-- > 0){
594 c=d; d=e;
595 e= get_byte(pb);
596 if(c == 0x82 && !d && !e)
597 break;
598 }
115329f1 599
1359c2d4 600 if (c != 0x82) {
5acdd6e6 601 if (!url_feof(pb))
bb270c08 602 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
2a10020b 603 }
0c0d17f3 604 if ((c & 0x8f) == 0x82) {
0fd9e6f3 605 if (d || e) {
5acdd6e6 606 if (!url_feof(pb))
bb270c08 607 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
f7835507 608 return -1;
bb270c08 609 }
0c0d17f3 610 c= get_byte(pb);
0fd9e6f3 611 d= get_byte(pb);
0c0d17f3
MN
612 rsize+=3;
613 }else{
614 url_fseek(pb, -1, SEEK_CUR); //FIXME
de6d9b64 615 }
2a10020b 616
0c0d17f3
MN
617 asf->packet_flags = c;
618 asf->packet_property = d;
2a10020b
ZK
619
620 DO_2BITS(asf->packet_flags >> 5, packet_length, asf->packet_size);
621 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
622 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
623
5b11e081
MN
624 //the following checks prevent overflows and infinite loops
625 if(packet_length >= (1U<<29)){
626 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb));
ceba96cb 627 return -1;
5b11e081 628 }
92216453 629 if(padsize >= packet_length){
5b11e081 630 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, url_ftell(pb));
ceba96cb 631 return -1;
5b11e081
MN
632 }
633
2a10020b 634 asf->packet_timestamp = get_le32(pb);
de6d9b64 635 get_le16(pb); /* duration */
2141dc37 636 // rsize has at least 11 bytes which have to be present
2a10020b
ZK
637
638 if (asf->packet_flags & 0x01) {
bb270c08 639 asf->packet_segsizetype = get_byte(pb); rsize++;
2a10020b
ZK
640 asf->packet_segments = asf->packet_segsizetype & 0x3f;
641 } else {
bb270c08 642 asf->packet_segments = 1;
2a10020b
ZK
643 asf->packet_segsizetype = 0x80;
644 }
645 asf->packet_size_left = packet_length - padsize - rsize;
acbe6cfa
ZK
646 if (packet_length < asf->hdr.min_pktsize)
647 padsize += asf->hdr.min_pktsize - packet_length;
2a10020b 648 asf->packet_padsize = padsize;
de6d9b64 649#ifdef DEBUG
2a10020b 650 printf("packet: size=%d padsize=%d left=%d\n", asf->packet_size, asf->packet_padsize, asf->packet_size_left);
de6d9b64 651#endif
de6d9b64
FB
652 return 0;
653}
654
ae60a857
MN
655/**
656 *
657 * @return <0 if error
658 */
659static int asf_read_frame_header(AVFormatContext *s){
660 ASFContext *asf = s->priv_data;
661 ByteIOContext *pb = &s->pb;
662 int rsize = 1;
663 int num = get_byte(pb);
559a55ad 664 int64_t ts0, ts1;
ae60a857
MN
665
666 asf->packet_segments--;
667 asf->packet_key_frame = num >> 7;
668 asf->stream_index = asf->asfid2avid[num & 0x7f];
669 // sequence should be ignored!
670 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
671 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
672 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
673//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);
674 if (asf->packet_replic_size >= 8) {
675 asf->packet_obj_size = get_le32(pb);
676 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
677 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
678 return -1;
679 }
680 asf->packet_frag_timestamp = get_le32(pb); // timestamp
559a55ad
MN
681 if(asf->packet_replic_size >= 8+38+4){
682// for(i=0; i<asf->packet_replic_size-8; i++)
683// av_log(s, AV_LOG_DEBUG, "%02X ",get_byte(pb));
684// av_log(s, AV_LOG_DEBUG, "\n");
685 url_fskip(pb, 10);
686 ts0= get_le64(pb);
687 ts1= get_le64(pb);
688 url_fskip(pb, 12);
689 get_le32(pb);
690 url_fskip(pb, asf->packet_replic_size - 8 - 38 - 4);
691 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
692 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
693 }else
694 url_fskip(pb, asf->packet_replic_size - 8);
ae60a857
MN
695 rsize += asf->packet_replic_size; // FIXME - check validity
696 } else if (asf->packet_replic_size==1){
697 // multipacket - frag_offset is begining timestamp
698 asf->packet_time_start = asf->packet_frag_offset;
699 asf->packet_frag_offset = 0;
700 asf->packet_frag_timestamp = asf->packet_timestamp;
701
702 asf->packet_time_delta = get_byte(pb);
703 rsize++;
704 }else if(asf->packet_replic_size!=0){
705 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
706 return -1;
707 }
708 if (asf->packet_flags & 0x01) {
709 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
13f7e4b9
MN
710 if(asf->packet_frag_size > asf->packet_size_left - rsize){
711 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n");
712 return -1;
713 }
ae60a857
MN
714 //printf("Fragsize %d\n", asf->packet_frag_size);
715 } else {
716 asf->packet_frag_size = asf->packet_size_left - rsize;
717 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
718 }
719 if (asf->packet_replic_size == 1) {
720 asf->packet_multi_size = asf->packet_frag_size;
721 if (asf->packet_multi_size > asf->packet_size_left)
722 return -1;
723 }
724 asf->packet_size_left -= rsize;
725 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
726
727 return 0;
728}
729
de6d9b64
FB
730static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
731{
732 ASFContext *asf = s->priv_data;
2a10020b 733 ASFStream *asf_st = 0;
de6d9b64 734 ByteIOContext *pb = &s->pb;
1359c2d4 735 //static int pc = 0;
2a10020b 736 for (;;) {
ceba96cb 737 if(url_feof(pb))
6f3e0b21 738 return AVERROR(EIO);
bb270c08
DB
739 if (asf->packet_size_left < FRAME_HEADER_SIZE
740 || asf->packet_segments < 1) {
741 //asf->packet_size_left <= asf->packet_padsize) {
742 int ret = asf->packet_size_left + asf->packet_padsize;
949b1a13 743 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
5b11e081 744 assert(ret>=0);
bb270c08
DB
745 /* fail safe */
746 url_fskip(pb, ret);
b04d5d31 747
82b9e4a2 748 asf->packet_pos= url_ftell(&s->pb);
b6eaae39
KED
749 if (asf->data_object_size != (uint64_t)-1 &&
750 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
6f3e0b21 751 return AVERROR(EIO); /* Do not exceed the size of the data object */
bb270c08
DB
752 ret = asf_get_packet(s);
753 //printf("READ ASF PACKET %d r:%d c:%d\n", ret, asf->packet_size_left, pc++);
ceba96cb
MN
754 if (ret < 0)
755 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
2141dc37 756 asf->packet_time_start = 0;
2a10020b 757 continue;
bb270c08
DB
758 }
759 if (asf->packet_time_start == 0) {
ae60a857
MN
760 if(asf_read_frame_header(s) < 0){
761 asf->packet_segments= 0;
236116cb 762 continue;
1305a9d5 763 }
bb270c08 764 if (asf->stream_index < 0
f3356e9c
MN
765 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
766 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
767 ) {
1359c2d4 768 asf->packet_time_start = 0;
bb270c08
DB
769 /* unhandled packet (should not happen) */
770 url_fskip(pb, asf->packet_frag_size);
771 asf->packet_size_left -= asf->packet_frag_size;
b9866ebc 772 if(asf->stream_index < 0)
ae60a857 773 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
1359c2d4 774 continue;
bb270c08
DB
775 }
776 asf->asf_st = s->streams[asf->stream_index]->priv_data;
777 }
778 asf_st = asf->asf_st;
779
bb270c08
DB
780 if (asf->packet_replic_size == 1) {
781 // frag_offset is here used as the begining timestamp
782 asf->packet_frag_timestamp = asf->packet_time_start;
783 asf->packet_time_start += asf->packet_time_delta;
784 asf->packet_obj_size = asf->packet_frag_size = get_byte(pb);
785 asf->packet_size_left--;
2141dc37 786 asf->packet_multi_size--;
bb270c08
DB
787 if (asf->packet_multi_size < asf->packet_obj_size)
788 {
789 asf->packet_time_start = 0;
790 url_fskip(pb, asf->packet_multi_size);
791 asf->packet_size_left -= asf->packet_multi_size;
2141dc37 792 continue;
bb270c08
DB
793 }
794 asf->packet_multi_size -= asf->packet_obj_size;
795 //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);
796 }
60ff1c44
MN
797 if( /*asf->packet_frag_size == asf->packet_obj_size*/
798 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
799 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
800 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
801 asf_st->frag_offset, asf->packet_frag_size,
802 asf->packet_obj_size, asf_st->pkt.size);
803 asf->packet_obj_size= asf_st->pkt.size;
804 }
805
f8f0a0bd
MN
806 if ( asf_st->pkt.size != asf->packet_obj_size
807 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
200026aa
MN
808 if(asf_st->pkt.data){
809 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
810 asf_st->frag_offset = 0;
811 av_free_packet(&asf_st->pkt);
812 }
bb270c08
DB
813 /* new packet */
814 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
815 asf_st->seq = asf->packet_seq;
816 asf_st->pkt.pts = asf->packet_frag_timestamp;
817 asf_st->pkt.stream_index = asf->stream_index;
115329f1
DB
818 asf_st->pkt.pos =
819 asf_st->packet_pos= asf->packet_pos;
820//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
82b9e4a2 821//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY,
01f4895c 822//s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size);
bb270c08
DB
823 if (s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO)
824 asf->packet_key_frame = 1;
825 if (asf->packet_key_frame)
826 asf_st->pkt.flags |= PKT_FLAG_KEY;
827 }
828
829 /* read data */
830 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
831 // asf->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
832 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
833 asf->packet_size_left -= asf->packet_frag_size;
834 if (asf->packet_size_left < 0)
2141dc37 835 continue;
4c71d727
MN
836
837 if( asf->packet_frag_offset >= asf_st->pkt.size
838 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
839 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
840 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
841 continue;
842 }
843
bb270c08
DB
844 get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
845 asf->packet_frag_size);
72be7db4
RD
846 if (s->key && s->keylen == 20)
847 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
848 asf->packet_frag_size);
bb270c08
DB
849 asf_st->frag_offset += asf->packet_frag_size;
850 /* test if whole packet is read */
851 if (asf_st->frag_offset == asf_st->pkt.size) {
da0b94f5
MN
852 //workaround for macroshit radio DVR-MS files
853 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
854 && asf_st->pkt.size > 100){
855 int i;
856 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
857 if(i == asf_st->pkt.size){
858 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
859 asf_st->frag_offset = 0;
860 av_free_packet(&asf_st->pkt);
861 continue;
862 }
863 }
864
bb270c08
DB
865 /* return packet */
866 if (asf_st->ds_span > 1) {
05219463 867 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
b43387d4 868 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 869 }else{
bb270c08 870 /* packet descrambling */
191e8ca7 871 uint8_t *newdata = av_malloc(asf_st->pkt.size);
bb270c08
DB
872 if (newdata) {
873 int offset = 0;
874 while (offset < asf_st->pkt.size) {
875 int off = offset / asf_st->ds_chunk_size;
876 int row = off / asf_st->ds_span;
877 int col = off % asf_st->ds_span;
878 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
879 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
05219463
MN
880
881 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
882 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
bb270c08
DB
883 memcpy(newdata + offset,
884 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
885 asf_st->ds_chunk_size);
886 offset += asf_st->ds_chunk_size;
887 }
888 av_free(asf_st->pkt.data);
889 asf_st->pkt.data = newdata;
890 }
05219463 891 }
bb270c08
DB
892 }
893 asf_st->frag_offset = 0;
b83e83b9 894 *pkt= asf_st->pkt;
bb270c08
DB
895 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
896 asf_st->pkt.size = 0;
897 asf_st->pkt.data = 0;
898 break; // packet completed
899 }
de6d9b64 900 }
de6d9b64
FB
901 return 0;
902}
903
38376f00
KK
904// Added to support seeking after packets have been read
905// If information is not reset, read_packet fails due to
906// leftover information from previous reads
907static void asf_reset_header(AVFormatContext *s)
908{
909 ASFContext *asf = s->priv_data;
82b9e4a2
MN
910 ASFStream *asf_st;
911 int i;
38376f00
KK
912
913 asf->packet_nb_frames = 0;
38376f00
KK
914 asf->packet_size_left = 0;
915 asf->packet_segments = 0;
916 asf->packet_flags = 0;
917 asf->packet_property = 0;
918 asf->packet_timestamp = 0;
919 asf->packet_segsizetype = 0;
920 asf->packet_segments = 0;
921 asf->packet_seq = 0;
922 asf->packet_replic_size = 0;
923 asf->packet_key_frame = 0;
924 asf->packet_padsize = 0;
925 asf->packet_frag_offset = 0;
926 asf->packet_frag_size = 0;
927 asf->packet_frag_timestamp = 0;
928 asf->packet_multi_size = 0;
929 asf->packet_obj_size = 0;
930 asf->packet_time_delta = 0;
931 asf->packet_time_start = 0;
115329f1 932
82b9e4a2
MN
933 for(i=0; i<s->nb_streams; i++){
934 asf_st= s->streams[i]->priv_data;
935 av_free_packet(&asf_st->pkt);
936 asf_st->frag_offset=0;
937 asf_st->seq=0;
938 }
939 asf->asf_st= NULL;
38376f00
KK
940}
941
5d25d2a9
DB
942static int asf_read_close(AVFormatContext *s)
943{
944 int i;
945
946 asf_reset_header(s);
947 for(i=0;i<s->nb_streams;i++) {
948 AVStream *st = s->streams[i];
949 av_free(st->priv_data);
950 av_free(st->codec->palctrl);
951 }
952 return 0;
953}
954
8d14a25c 955static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
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956{
957 ASFContext *asf = s->priv_data;
958 AVPacket pkt1, *pkt = &pkt1;
82b9e4a2 959 ASFStream *asf_st;
580fb5e7 960 int64_t pts;
82b9e4a2 961 int64_t pos= *ppos;
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962 int i;
963 int64_t start_pos[s->nb_streams];
115329f1 964
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965 for(i=0; i<s->nb_streams; i++){
966 start_pos[i]= pos;
967 }
115329f1 968
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969 pos= (pos+asf->packet_size-1-s->data_offset)/asf->packet_size*asf->packet_size+ s->data_offset;
970 *ppos= pos;
971 url_fseek(&s->pb, pos, SEEK_SET);
115329f1 972
82b9e4a2 973//printf("asf_read_pts\n");
82b9e4a2 974 asf_reset_header(s);
3e9245a9 975 for(;;){
82b9e4a2 976 if (av_read_frame(s, pkt) < 0){
0b93103a 977 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
bb270c08 978 return AV_NOPTS_VALUE;
82b9e4a2 979 }
115329f1 980
38cf2a72 981 pts= pkt->pts;
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982
983 av_free_packet(pkt);
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984 if(pkt->flags&PKT_FLAG_KEY){
985 i= pkt->stream_index;
986
987 asf_st= s->streams[i]->priv_data;
988
0fd9e6f3 989// assert((asf_st->packet_pos - s->data_offset) % asf->packet_size == 0);
8d14a25c 990 pos= asf_st->packet_pos;
09646bab 991
52e54612 992 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
8d14a25c 993 start_pos[i]= asf_st->packet_pos + 1;
115329f1 994
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995 if(pkt->stream_index == stream_index)
996 break;
997 }
998 }
999
1000 *ppos= pos;
949b1a13 1001//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
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1002
1003 return pts;
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1004}
1005
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1006static void asf_build_simple_index(AVFormatContext *s, int stream_index)
1007{
1008 GUID g;
1009 ASFContext *asf = s->priv_data;
1010 int64_t gsize, itime;
1011 int64_t pos, current_pos, index_pts;
1012 int i;
1013 int pct,ict;
1014
1015 current_pos = url_ftell(&s->pb);
1016
1017 url_fseek(&s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
1018 get_guid(&s->pb, &g);
1019 if (!memcmp(&g, &index_guid, sizeof(GUID))) {
1020 gsize = get_le64(&s->pb);
1021 get_guid(&s->pb, &g);
1022 itime=get_le64(&s->pb);
1023 pct=get_le32(&s->pb);
1024 ict=get_le32(&s->pb);
ccd3228e 1025 av_log(NULL, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
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1026
1027 for (i=0;i<ict;i++){
1028 int pktnum=get_le32(&s->pb);
1029 int pktct =get_le16(&s->pb);
1030 av_log(NULL, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct);
1031
1032 pos=s->data_offset + asf->packet_size*(int64_t)pktnum;
1033 index_pts=av_rescale(itime, i, 10000);
1034
1035 av_add_index_entry(s->streams[stream_index], pos, index_pts, asf->packet_size, 0, AVINDEX_KEYFRAME);
1036 }
52e54612 1037 asf->index_read= 1;
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1038 }
1039 url_fseek(&s->pb, current_pos, SEEK_SET);
1040}
1041
3ba1438d 1042static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
2a10020b 1043{
afda223c 1044 ASFContext *asf = s->priv_data;
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1045 AVStream *st = s->streams[stream_index];
1046 int64_t pos;
1047 int index;
115329f1 1048
a602556e 1049 if (asf->packet_size <= 0)
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1050 return -1;
1051
52e54612 1052 if (!asf->index_read)
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1053 asf_build_simple_index(s, stream_index);
1054
52e54612 1055 if(!(asf->index_read && st->index_entries)){
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1056 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
1057 return -1;
1058 }else{
1059 index= av_index_search_timestamp(st, pts, flags);
1060 if(index<0)
1061 return -1;
1062
1063 /* find the position */
1064 pos = st->index_entries[index].pos;
1065 pts = st->index_entries[index].timestamp;
1066
1067 // various attempts to find key frame have failed so far
1068 // asf_reset_header(s);
1069 // url_fseek(&s->pb, pos, SEEK_SET);
1070 // key_pos = pos;
1071 // for(i=0;i<16;i++){
1072 // pos = url_ftell(&s->pb);
1073 // if (av_read_frame(s, &pkt) < 0){
1074 // av_log(s, AV_LOG_INFO, "seek failed\n");
1075 // return -1;
1076 // }
1077 // asf_st = s->streams[stream_index]->priv_data;
1078 // pos += st->parser->frame_offset;
1079 //
1080 // if (pkt.size > b) {
1081 // b = pkt.size;
1082 // key_pos = pos;
1083 // }
1084 //
1085 // av_free_packet(&pkt);
1086 // }
1087
1088 /* do the seek */
ccd3228e 1089 av_log(NULL, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
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1090 url_fseek(&s->pb, pos, SEEK_SET);
1091 }
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1092 asf_reset_header(s);
1093 return 0;
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1094}
1095
ff70e601 1096AVInputFormat asf_demuxer = {
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1097 "asf",
1098 "asf format",
1099 sizeof(ASFContext),
1100 asf_probe,
1101 asf_read_header,
1102 asf_read_packet,
1103 asf_read_close,
2a10020b 1104 asf_read_seek,
8d14a25c 1105 asf_read_pts,
c9a65ca8 1106};