w32thread: Make avcodec_thread_execute2() static here as well
[libav.git] / libavformat / asfdec.c
CommitLineData
de6d9b64 1/*
7fbde343 2 * ASF compatible demuxer
406792e7 3 * Copyright (c) 2000, 2001 Fabrice Bellard
de6d9b64 4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
19720f15
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
de6d9b64 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
de6d9b64 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19720f15
FB
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
de6d9b64 16 *
19720f15 17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
de6d9b64 20 */
245976da 21
c9d7cd6d
BC
22//#define DEBUG
23
245976da 24#include "libavutil/common.h"
5f1ac36d 25#include "libavutil/avstring.h"
245976da 26#include "libavcodec/mpegaudio.h"
de6d9b64 27#include "avformat.h"
9d9f4119 28#include "riff.h"
542993b0 29#include "asf.h"
72be7db4 30#include "asfcrypt.h"
5f1ac36d 31#include "avlanguage.h"
de6d9b64 32
9686df2b 33void ff_mms_set_stream_selection(URLContext *h, AVFormatContext *format);
49ce700a 34
580fb5e7
MN
35#undef NDEBUG
36#include <assert.h>
37
615b92fd 38#define FRAME_HEADER_SIZE 17
115329f1 39// Fix Me! FRAME_HEADER_SIZE may be different.
615b92fd 40
b8b00d94 41static const ff_asf_guid index_guid = {
24c14d6d 42 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
de6d9b64
FB
43};
44
b8b00d94 45static const ff_asf_guid stream_bitrate_guid = { /* (http://get.to/sdp) */
0e3b6a6f
RM
46 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
47};
de6d9b64
FB
48/**********************************/
49/* decoding */
50
c9d7cd6d
BC
51static int guidcmp(const void *g1, const void *g2)
52{
53 return memcmp(g1, g2, sizeof(ff_asf_guid));
54}
de6d9b64
FB
55
56#ifdef DEBUG
5082f759 57#define PRINT_IF_GUID(g,cmp) \
4d0c3dc0 58if (!guidcmp(g, &cmp)) \
f94981ea 59 dprintf(NULL, "(GUID: %s) ", #cmp)
5082f759 60
b8b00d94 61static void print_guid(const ff_asf_guid *g)
de6d9b64
FB
62{
63 int i;
17af0525
AJ
64 PRINT_IF_GUID(g, ff_asf_header);
65 else PRINT_IF_GUID(g, ff_asf_file_header);
66 else PRINT_IF_GUID(g, ff_asf_stream_header);
67 else PRINT_IF_GUID(g, ff_asf_audio_stream);
68 else PRINT_IF_GUID(g, ff_asf_audio_conceal_none);
69 else PRINT_IF_GUID(g, ff_asf_video_stream);
70 else PRINT_IF_GUID(g, ff_asf_video_conceal_none);
71 else PRINT_IF_GUID(g, ff_asf_command_stream);
72 else PRINT_IF_GUID(g, ff_asf_comment_header);
73 else PRINT_IF_GUID(g, ff_asf_codec_comment_header);
74 else PRINT_IF_GUID(g, ff_asf_codec_comment1_header);
75 else PRINT_IF_GUID(g, ff_asf_data_header);
5082f759 76 else PRINT_IF_GUID(g, index_guid);
17af0525
AJ
77 else PRINT_IF_GUID(g, ff_asf_head1_guid);
78 else PRINT_IF_GUID(g, ff_asf_head2_guid);
79 else PRINT_IF_GUID(g, ff_asf_my_guid);
80 else PRINT_IF_GUID(g, ff_asf_ext_stream_header);
81 else PRINT_IF_GUID(g, ff_asf_extended_content_header);
82 else PRINT_IF_GUID(g, ff_asf_ext_stream_embed_stream_header);
83 else PRINT_IF_GUID(g, ff_asf_ext_stream_audio_stream);
84 else PRINT_IF_GUID(g, ff_asf_metadata_header);
0e3b6a6f 85 else PRINT_IF_GUID(g, stream_bitrate_guid);
5f1ac36d 86 else PRINT_IF_GUID(g, ff_asf_language_guid);
5082f759 87 else
f94981ea 88 dprintf(NULL, "(GUID: unknown) ");
24c14d6d 89 for(i=0;i<16;i++)
f94981ea
MR
90 dprintf(NULL, " 0x%02x,", (*g)[i]);
91 dprintf(NULL, "}\n");
de6d9b64 92}
6df84c3a 93#undef PRINT_IF_GUID
f94981ea
MR
94#else
95#define print_guid(g)
de6d9b64
FB
96#endif
97
b8b00d94 98static void get_guid(ByteIOContext *s, ff_asf_guid *g)
de6d9b64 99{
24c14d6d 100 assert(sizeof(*g) == 16);
3dc761a4 101 get_buffer(s, *g, sizeof(*g));
de6d9b64
FB
102}
103
104#if 0
105static void get_str16(ByteIOContext *pb, char *buf, int buf_size)
106{
107 int len, c;
108 char *q;
109
110 len = get_le16(pb);
111 q = buf;
112 while (len > 0) {
113 c = get_le16(pb);
114 if ((q - buf) < buf_size - 1)
115 *q++ = c;
116 len--;
117 }
118 *q = '\0';
119}
120#endif
121
122static void get_str16_nolen(ByteIOContext *pb, int len, char *buf, int buf_size)
123{
db5c43b4 124 char* q = buf;
fce44489 125 while (len > 1) {
db5c43b4 126 uint8_t tmp;
fce44489
AK
127 uint32_t ch;
128
129 GET_UTF16(ch, (len -= 2) >= 0 ? get_le16(pb) : 0, break;)
130 PUT_UTF8(ch, tmp, if (q - buf < buf_size - 1) *q++ = tmp;)
de6d9b64 131 }
46b4019b
BC
132 if (len > 0)
133 url_fskip(pb, len);
de6d9b64
FB
134 *q = '\0';
135}
136
c9a65ca8
FB
137static int asf_probe(AVProbeData *pd)
138{
c9a65ca8 139 /* check file header */
4d0c3dc0 140 if (!guidcmp(pd->buf, &ff_asf_header))
c9a65ca8
FB
141 return AVPROBE_SCORE_MAX;
142 else
143 return 0;
144}
145
30e88789
MN
146static int get_value(ByteIOContext *pb, int type){
147 switch(type){
148 case 2: return get_le32(pb);
149 case 3: return get_le32(pb);
150 case 4: return get_le64(pb);
151 case 5: return get_le16(pb);
152 default:return INT_MIN;
153 }
154}
155
20e2a7ae
AJ
156static void get_tag(AVFormatContext *s, const char *key, int type, int len)
157{
12ad6671
MN
158 char *value;
159
fce44489 160 if ((unsigned)len >= (UINT_MAX - 1)/2)
12ad6671
MN
161 return;
162
fce44489 163 value = av_malloc(2*len+1);
12ad6671
MN
164 if (!value)
165 return;
166
6538c0f1 167 if (type == 0) { // UTF16-LE
fce44489 168 get_str16_nolen(s->pb, len, value, 2*len + 1);
6538c0f1 169 } else if (type > 1 && type <= 5) { // boolean or DWORD or QWORD or WORD
20e2a7ae 170 uint64_t num = get_value(s->pb, type);
12ad6671 171 snprintf(value, len, "%"PRIu64, num);
20e2a7ae
AJ
172 } else {
173 url_fskip(s->pb, len);
47794b9d 174 av_freep(&value);
27e74927 175 av_log(s, AV_LOG_DEBUG, "Unsupported value type %d in tag %s.\n", type, key);
20e2a7ae
AJ
176 return;
177 }
fce44489
AK
178 av_metadata_set2(&s->metadata, key, value, 0);
179 av_freep(&value);
20e2a7ae
AJ
180}
181
de6d9b64
FB
182static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
183{
c9a65ca8 184 ASFContext *asf = s->priv_data;
b8b00d94 185 ff_asf_guid g;
899681cd 186 ByteIOContext *pb = s->pb;
de6d9b64
FB
187 AVStream *st;
188 ASFStream *asf_st;
e095026a 189 int size, i;
0c1a9eda 190 int64_t gsize;
30e88789 191 AVRational dar[128];
d8470737 192 uint32_t bitrate[128];
30e88789
MN
193
194 memset(dar, 0, sizeof(dar));
d8470737 195 memset(bitrate, 0, sizeof(bitrate));
de6d9b64 196
de6d9b64 197 get_guid(pb, &g);
4d0c3dc0 198 if (guidcmp(&g, &ff_asf_header))
ccafd472 199 return -1;
de6d9b64
FB
200 get_le64(pb);
201 get_le32(pb);
202 get_byte(pb);
203 get_byte(pb);
2141dc37 204 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
de6d9b64
FB
205 for(;;) {
206 get_guid(pb, &g);
207 gsize = get_le64(pb);
f94981ea 208 dprintf(s, "%08"PRIx64": ", url_ftell(pb) - 24);
de6d9b64 209 print_guid(&g);
f94981ea 210 dprintf(s, " size=0x%"PRIx64"\n", gsize);
4d0c3dc0 211 if (!guidcmp(&g, &ff_asf_data_header)) {
09d9672a
MN
212 asf->data_object_offset = url_ftell(pb);
213 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
214 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
215 asf->data_object_size = gsize - 24;
216 } else {
217 asf->data_object_size = (uint64_t)-1;
218 }
219 break;
220 }
de6d9b64 221 if (gsize < 24)
ccafd472 222 return -1;
4d0c3dc0 223 if (!guidcmp(&g, &ff_asf_file_header)) {
2a10020b 224 get_guid(pb, &asf->hdr.guid);
bb270c08
DB
225 asf->hdr.file_size = get_le64(pb);
226 asf->hdr.create_time = get_le64(pb);
6bb2a2df 227 asf->nb_packets = get_le64(pb);
bb270c08 228 asf->hdr.play_time = get_le64(pb);
b4bbcd63 229 asf->hdr.send_time = get_le64(pb);
bb270c08
DB
230 asf->hdr.preroll = get_le32(pb);
231 asf->hdr.ignore = get_le32(pb);
232 asf->hdr.flags = get_le32(pb);
233 asf->hdr.min_pktsize = get_le32(pb);
234 asf->hdr.max_pktsize = get_le32(pb);
235 asf->hdr.max_bitrate = get_le32(pb);
91d19d47 236 s->packet_size = asf->hdr.max_pktsize;
4d0c3dc0 237 } else if (!guidcmp(&g, &ff_asf_stream_header)) {
fb65d2ca
DP
238 enum CodecType type;
239 int type_specific_size, sizeX;
7ad5455c 240 uint64_t total_size;
de6d9b64 241 unsigned int tag1;
371bf806 242 int64_t pos1, pos2, start_time;
6fea687e 243 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
2a10020b 244
de6d9b64
FB
245 pos1 = url_ftell(pb);
246
247eadca 247 st = av_new_stream(s, 0);
de6d9b64 248 if (!st)
ccafd472 249 return AVERROR(ENOMEM);
9ee91c2f 250 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
de6d9b64
FB
251 asf_st = av_mallocz(sizeof(ASFStream));
252 if (!asf_st)
ccafd472 253 return AVERROR(ENOMEM);
de6d9b64 254 st->priv_data = asf_st;
371bf806
MN
255 start_time = asf->hdr.preroll;
256
5f1ac36d
CC
257 asf_st->stream_language_index = 128; // invalid stream index means no language info
258
73fe1052 259 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
f2086fb5 260 st->duration = asf->hdr.play_time /
371bf806 261 (10000000 / 1000) - start_time;
73fe1052 262 }
de6d9b64 263 get_guid(pb, &g);
88141c91
MN
264
265 test_for_ext_stream_audio = 0;
4d0c3dc0 266 if (!guidcmp(&g, &ff_asf_audio_stream)) {
de6d9b64 267 type = CODEC_TYPE_AUDIO;
4d0c3dc0 268 } else if (!guidcmp(&g, &ff_asf_video_stream)) {
de6d9b64 269 type = CODEC_TYPE_VIDEO;
4d0c3dc0 270 } else if (!guidcmp(&g, &ff_asf_command_stream)) {
3e86dba2 271 type = CODEC_TYPE_DATA;
4d0c3dc0 272 } else if (!guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
88141c91
MN
273 test_for_ext_stream_audio = 1;
274 type = CODEC_TYPE_UNKNOWN;
de6d9b64 275 } else {
ccafd472 276 return -1;
de6d9b64
FB
277 }
278 get_guid(pb, &g);
279 total_size = get_le64(pb);
2e7973bb 280 type_specific_size = get_le32(pb);
de6d9b64 281 get_le32(pb);
bb270c08 282 st->id = get_le16(pb) & 0x7f; /* stream id */
2a10020b 283 // mapping of asf ID to AV stream ID;
247eadca 284 asf->asfid2avid[st->id] = s->nb_streams - 1;
2a10020b 285
de6d9b64 286 get_le32(pb);
88141c91
MN
287
288 if (test_for_ext_stream_audio) {
289 get_guid(pb, &g);
4d0c3dc0 290 if (!guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
88141c91 291 type = CODEC_TYPE_AUDIO;
6fea687e 292 is_dvr_ms_audio=1;
88141c91
MN
293 get_guid(pb, &g);
294 get_le32(pb);
295 get_le32(pb);
296 get_le32(pb);
297 get_guid(pb, &g);
298 get_le32(pb);
299 }
300 }
301
bb270c08 302 st->codec->codec_type = type;
de6d9b64 303 if (type == CODEC_TYPE_AUDIO) {
1a40491e 304 ff_get_wav_header(pb, st->codec, type_specific_size);
6fea687e
JD
305 if (is_dvr_ms_audio) {
306 // codec_id and codec_tag are unreliable in dvr_ms
307 // files. Set them later by probing stream.
0bef08e5 308 st->codec->codec_id = CODEC_ID_PROBE;
6fea687e
JD
309 st->codec->codec_tag = 0;
310 }
e7f73adb
AC
311 if (st->codec->codec_id == CODEC_ID_AAC) {
312 st->need_parsing = AVSTREAM_PARSE_NONE;
313 } else {
e9259f8d 314 st->need_parsing = AVSTREAM_PARSE_FULL;
e7f73adb 315 }
bb270c08
DB
316 /* We have to init the frame size at some point .... */
317 pos2 = url_ftell(pb);
b9c6d01b 318 if (gsize >= (pos2 + 8 - pos1 + 24)) {
bb270c08
DB
319 asf_st->ds_span = get_byte(pb);
320 asf_st->ds_packet_size = get_le16(pb);
321 asf_st->ds_chunk_size = get_le16(pb);
6bb2a2df
MN
322 get_le16(pb); //ds_data_size
323 get_byte(pb); //ds_silence_data
bb270c08
DB
324 }
325 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
326 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
327 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
328 if (asf_st->ds_span > 1) {
329 if (!asf_st->ds_chunk_size
05219463
MN
330 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
331 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
bb270c08
DB
332 asf_st->ds_span = 0; // disable descrambling
333 }
01f4895c 334 switch (st->codec->codec_id) {
80783dc2 335 case CODEC_ID_MP3:
01f4895c 336 st->codec->frame_size = MPA_FRAME_SIZE;
f80c1ac0
PG
337 break;
338 case CODEC_ID_PCM_S16LE:
339 case CODEC_ID_PCM_S16BE:
340 case CODEC_ID_PCM_U16LE:
341 case CODEC_ID_PCM_U16BE:
342 case CODEC_ID_PCM_S8:
343 case CODEC_ID_PCM_U8:
344 case CODEC_ID_PCM_ALAW:
345 case CODEC_ID_PCM_MULAW:
01f4895c 346 st->codec->frame_size = 1;
f80c1ac0
PG
347 break;
348 default:
349 /* This is probably wrong, but it prevents a crash later */
01f4895c 350 st->codec->frame_size = 1;
f80c1ac0
PG
351 break;
352 }
88141c91 353 } else if (type == CODEC_TYPE_VIDEO) {
bb270c08 354 get_le32(pb);
de6d9b64
FB
355 get_le32(pb);
356 get_byte(pb);
357 size = get_le16(pb); /* size */
0ffd77b9 358 sizeX= get_le32(pb); /* size */
01f4895c 359 st->codec->width = get_le32(pb);
bb270c08 360 st->codec->height = get_le32(pb);
2a10020b 361 /* not available for asf */
de6d9b64 362 get_le16(pb); /* panes */
dd1c8f3e 363 st->codec->bits_per_coded_sample = get_le16(pb); /* depth */
de6d9b64 364 tag1 = get_le32(pb);
bb270c08 365 url_fskip(pb, 20);
871e62e5 366// av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
0ffd77b9 367 size= sizeX;
bb270c08
DB
368 if (size > 40) {
369 st->codec->extradata_size = size - 40;
370 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
371 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
372 }
5e29abf8 373
6d050dd6 374 /* Extract palette from extradata if bpp <= 8 */
375 /* This code assumes that extradata contains only palette */
376 /* This is true for all paletted codecs implemented in ffmpeg */
377 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
378 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
63613fe6 379#if HAVE_BIGENDIAN
6d050dd6 380 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
381 st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
5e29abf8 382#else
6d050dd6 383 memcpy(st->codec->palctrl->palette, st->codec->extradata,
384 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
5e29abf8 385#endif
6d050dd6 386 st->codec->palctrl->palette_changed = 1;
387 }
5e29abf8 388
01f4895c 389 st->codec->codec_tag = tag1;
1a40491e 390 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
afbb5ce4 391 if(tag1 == MKTAG('D', 'V', 'R', ' '))
57004ff1 392 st->need_parsing = AVSTREAM_PARSE_FULL;
de6d9b64
FB
393 }
394 pos2 = url_ftell(pb);
395 url_fskip(pb, gsize - (pos2 - pos1 + 24));
4d0c3dc0 396 } else if (!guidcmp(&g, &ff_asf_comment_header)) {
de6d9b64
FB
397 int len1, len2, len3, len4, len5;
398
399 len1 = get_le16(pb);
400 len2 = get_le16(pb);
401 len3 = get_le16(pb);
402 len4 = get_le16(pb);
403 len5 = get_le16(pb);
20e2a7ae
AJ
404 get_tag(s, "title" , 0, len1);
405 get_tag(s, "author" , 0, len2);
406 get_tag(s, "copyright", 0, len3);
407 get_tag(s, "comment" , 0, len4);
bb270c08 408 url_fskip(pb, len5);
4d0c3dc0 409 } else if (!guidcmp(&g, &stream_bitrate_guid)) {
0e3b6a6f
RM
410 int stream_count = get_le16(pb);
411 int j;
412
871e62e5
BF
413// av_log(s, AV_LOG_ERROR, "stream bitrate properties\n");
414// av_log(s, AV_LOG_ERROR, "streams %d\n", streams);
0e3b6a6f
RM
415 for(j = 0; j < stream_count; j++) {
416 int flags, bitrate, stream_id;
417
418 flags= get_le16(pb);
419 bitrate= get_le32(pb);
420 stream_id= (flags & 0x7f);
871e62e5 421// av_log(s, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate);
a9054d91 422 asf->stream_bitrates[stream_id]= bitrate;
0e3b6a6f 423 }
5f1ac36d
CC
424 } else if (!guidcmp(&g, &ff_asf_language_guid)) {
425 int j;
426 int stream_count = get_le16(pb);
427 for(j = 0; j < stream_count; j++) {
428 char lang[6];
429 unsigned int lang_len = get_byte(pb);
430 get_str16_nolen(pb, lang_len, lang, sizeof(lang));
431 if (j < 128)
432 av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
433 }
4d0c3dc0 434 } else if (!guidcmp(&g, &ff_asf_extended_content_header)) {
6d050dd6 435 int desc_count, i;
436
437 desc_count = get_le16(pb);
438 for(i=0;i<desc_count;i++) {
439 int name_len,value_type,value_len;
440 char name[1024];
441
442 name_len = get_le16(pb);
4a3104a9
AK
443 if (name_len%2) // must be even, broken lavf versions wrote len-1
444 name_len += 1;
6d050dd6 445 get_str16_nolen(pb, name_len, name, sizeof(name));
446 value_type = get_le16(pb);
447 value_len = get_le16(pb);
514b73cf 448 if (!value_type && value_len%2)
4a3104a9 449 value_len += 1;
6d050dd6 450 get_tag(s, name, value_type, value_len);
451 }
4d0c3dc0 452 } else if (!guidcmp(&g, &ff_asf_metadata_header)) {
30e88789
MN
453 int n, stream_num, name_len, value_len, value_type, value_num;
454 n = get_le16(pb);
455
456 for(i=0;i<n;i++) {
457 char name[1024];
458
459 get_le16(pb); //lang_list_index
460 stream_num= get_le16(pb);
461 name_len= get_le16(pb);
462 value_type= get_le16(pb);
463 value_len= get_le32(pb);
464
465 get_str16_nolen(pb, name_len, name, sizeof(name));
871e62e5 466//av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
755bfeab 467 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
468 url_fskip(pb, value_len - 2);
469
470 if(stream_num<128){
471 if (!strcmp(name, "AspectRatioX")) dar[stream_num].num= value_num;
472 else if(!strcmp(name, "AspectRatioY")) dar[stream_num].den= value_num;
473 }
474 }
4d0c3dc0 475 } else if (!guidcmp(&g, &ff_asf_ext_stream_header)) {
88141c91 476 int ext_len, payload_ext_ct, stream_ct;
d8470737 477 uint32_t ext_d, leak_rate, stream_num;
5f1ac36d 478 unsigned int stream_languageid_index;
88141c91 479
de3ae959
MN
480 get_le64(pb); // starttime
481 get_le64(pb); // endtime
d8470737 482 leak_rate = get_le32(pb); // leak-datarate
de3ae959
MN
483 get_le32(pb); // bucket-datasize
484 get_le32(pb); // init-bucket-fullness
485 get_le32(pb); // alt-leak-datarate
486 get_le32(pb); // alt-bucket-datasize
487 get_le32(pb); // alt-init-bucket-fullness
488 get_le32(pb); // max-object-size
489 get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
d8470737 490 stream_num = get_le16(pb); // stream-num
5f1ac36d
CC
491
492 stream_languageid_index = get_le16(pb); // stream-language-id-index
493 if (stream_num < 128)
494 asf->streams[stream_num].stream_language_index = stream_languageid_index;
495
de3ae959
MN
496 get_le64(pb); // avg frametime in 100ns units
497 stream_ct = get_le16(pb); //stream-name-count
498 payload_ext_ct = get_le16(pb); //payload-extension-system-count
88141c91 499
d8470737
ZM
500 if (stream_num < 128)
501 bitrate[stream_num] = leak_rate;
502
88141c91
MN
503 for (i=0; i<stream_ct; i++){
504 get_le16(pb);
505 ext_len = get_le16(pb);
506 url_fseek(pb, ext_len, SEEK_CUR);
507 }
508
509 for (i=0; i<payload_ext_ct; i++){
510 get_guid(pb, &g);
511 ext_d=get_le16(pb);
512 ext_len=get_le32(pb);
513 url_fseek(pb, ext_len, SEEK_CUR);
514 }
515
516 // there could be a optional stream properties object to follow
517 // if so the next iteration will pick it up
4d0c3dc0 518 } else if (!guidcmp(&g, &ff_asf_head1_guid)) {
de6d9b64
FB
519 int v1, v2;
520 get_guid(pb, &g);
521 v1 = get_le32(pb);
522 v2 = get_le16(pb);
88141c91 523#if 0
4d0c3dc0 524 } else if (!guidcmp(&g, &ff_asf_codec_comment_header)) {
de6d9b64
FB
525 int len, v1, n, num;
526 char str[256], *q;
527 char tag[16];
528
529 get_guid(pb, &g);
530 print_guid(&g);
2a10020b 531
de6d9b64
FB
532 n = get_le32(pb);
533 for(i=0;i<n;i++) {
534 num = get_le16(pb); /* stream number */
535 get_str16(pb, str, sizeof(str));
536 get_str16(pb, str, sizeof(str));
537 len = get_le16(pb);
538 q = tag;
539 while (len > 0) {
540 v1 = get_byte(pb);
541 if ((q - tag) < sizeof(tag) - 1)
542 *q++ = v1;
543 len--;
544 }
545 *q = '\0';
546 }
547#endif
548 } else if (url_feof(pb)) {
ccafd472 549 return -1;
de6d9b64 550 } else {
febd1c90
DT
551 if (!s->keylen) {
552 if (!guidcmp(&g, &ff_asf_content_encryption)) {
553 av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
554 } else if (!guidcmp(&g, &ff_asf_ext_content_encryption)) {
555 av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
556 } else if (!guidcmp(&g, &ff_asf_digital_signature)) {
557 av_log(s, AV_LOG_WARNING, "Digital signature detected, decoding will likely fail!\n");
558 }
559 }
de6d9b64
FB
560 url_fseek(pb, gsize - 24, SEEK_CUR);
561 }
562 }
563 get_guid(pb, &g);
564 get_le64(pb);
565 get_byte(pb);
566 get_byte(pb);
2141dc37 567 if (url_feof(pb))
ccafd472 568 return -1;
2141dc37 569 asf->data_offset = url_ftell(pb);
de6d9b64
FB
570 asf->packet_size_left = 0;
571
30e88789
MN
572
573 for(i=0; i<128; i++){
574 int stream_num= asf->asfid2avid[i];
d8470737 575 if(stream_num>=0){
59729451
AJ
576 AVStream *st = s->streams[stream_num];
577 if (!st->codec->bit_rate)
578 st->codec->bit_rate = bitrate[i];
d8470737 579 if (dar[i].num > 0 && dar[i].den > 0)
59729451
AJ
580 av_reduce(&st->sample_aspect_ratio.num,
581 &st->sample_aspect_ratio.den,
18d915dd 582 dar[i].num, dar[i].den, INT_MAX);
871e62e5 583//av_log(s, AV_LOG_ERROR, "dar %d:%d sar=%d:%d\n", dar[i].num, dar[i].den, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
5f1ac36d
CC
584
585 // copy and convert language codes to the frontend
586 if (asf->streams[i].stream_language_index < 128) {
587 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
588 if (rfc1766 && strlen(rfc1766) > 1) {
589 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
590 const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
591 if (iso6392)
592 av_metadata_set(&st->metadata, "language", iso6392);
593 }
594 }
30e88789
MN
595 }
596 }
597
de6d9b64 598 return 0;
de6d9b64
FB
599}
600
2a10020b
ZK
601#define DO_2BITS(bits, var, defval) \
602 switch (bits & 3) \
603 { \
604 case 3: var = get_le32(pb); rsize += 4; break; \
605 case 2: var = get_le16(pb); rsize += 2; break; \
606 case 1: var = get_byte(pb); rsize++; break; \
607 default: var = defval; break; \
608 }
609
277a28e8
RB
610/**
611 * Load a single ASF packet into the demuxer.
612 * @param s demux context
613 * @param pb context to read data from
614 * @returns 0 on success, <0 on error
615 */
616static int ff_asf_get_packet(AVFormatContext *s, ByteIOContext *pb)
de6d9b64
FB
617{
618 ASFContext *asf = s->priv_data;
2a10020b 619 uint32_t packet_length, padsize;
0c0d17f3 620 int rsize = 8;
0fd9e6f3
MN
621 int c, d, e, off;
622
68a10b40
RD
623 // if we do not know packet size, allow skipping up to 32 kB
624 off= 32768;
625 if (s->packet_size > 0)
b098b309 626 off= (url_ftell(pb) - s->data_offset) % s->packet_size + 3;
0fd9e6f3
MN
627
628 c=d=e=-1;
629 while(off-- > 0){
630 c=d; d=e;
631 e= get_byte(pb);
632 if(c == 0x82 && !d && !e)
633 break;
634 }
115329f1 635
1359c2d4 636 if (c != 0x82) {
2078ca16
RB
637 /**
638 * This code allows handling of -EAGAIN at packet boundaries (i.e.
639 * if the packet sync code above triggers -EAGAIN). This does not
640 * imply complete -EAGAIN handling support at random positions in
641 * the stream.
642 */
643 if (url_ferror(pb) == AVERROR(EAGAIN))
644 return AVERROR(EAGAIN);
5acdd6e6 645 if (!url_feof(pb))
bb270c08 646 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
2a10020b 647 }
0c0d17f3 648 if ((c & 0x8f) == 0x82) {
0fd9e6f3 649 if (d || e) {
5acdd6e6 650 if (!url_feof(pb))
bb270c08 651 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
f7835507 652 return -1;
bb270c08 653 }
0c0d17f3 654 c= get_byte(pb);
0fd9e6f3 655 d= get_byte(pb);
0c0d17f3
MN
656 rsize+=3;
657 }else{
658 url_fseek(pb, -1, SEEK_CUR); //FIXME
de6d9b64 659 }
2a10020b 660
0c0d17f3
MN
661 asf->packet_flags = c;
662 asf->packet_property = d;
2a10020b 663
91d19d47 664 DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
2a10020b
ZK
665 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
666 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
667
5b11e081 668 //the following checks prevent overflows and infinite loops
96f0731a 669 if(!packet_length || packet_length >= (1U<<29)){
5b11e081 670 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb));
ceba96cb 671 return -1;
5b11e081 672 }
92216453 673 if(padsize >= packet_length){
5b11e081 674 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, url_ftell(pb));
ceba96cb 675 return -1;
5b11e081
MN
676 }
677
2a10020b 678 asf->packet_timestamp = get_le32(pb);
de6d9b64 679 get_le16(pb); /* duration */
2141dc37 680 // rsize has at least 11 bytes which have to be present
2a10020b
ZK
681
682 if (asf->packet_flags & 0x01) {
bb270c08 683 asf->packet_segsizetype = get_byte(pb); rsize++;
2a10020b
ZK
684 asf->packet_segments = asf->packet_segsizetype & 0x3f;
685 } else {
bb270c08 686 asf->packet_segments = 1;
2a10020b
ZK
687 asf->packet_segsizetype = 0x80;
688 }
689 asf->packet_size_left = packet_length - padsize - rsize;
acbe6cfa
ZK
690 if (packet_length < asf->hdr.min_pktsize)
691 padsize += asf->hdr.min_pktsize - packet_length;
2a10020b 692 asf->packet_padsize = padsize;
91d19d47 693 dprintf(s, "packet: size=%d padsize=%d left=%d\n", s->packet_size, asf->packet_padsize, asf->packet_size_left);
de6d9b64
FB
694 return 0;
695}
696
ae60a857
MN
697/**
698 *
699 * @return <0 if error
700 */
d7fb5a18 701static int asf_read_frame_header(AVFormatContext *s, ByteIOContext *pb){
ae60a857 702 ASFContext *asf = s->priv_data;
ae60a857
MN
703 int rsize = 1;
704 int num = get_byte(pb);
559a55ad 705 int64_t ts0, ts1;
ae60a857
MN
706
707 asf->packet_segments--;
708 asf->packet_key_frame = num >> 7;
709 asf->stream_index = asf->asfid2avid[num & 0x7f];
710 // sequence should be ignored!
711 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
712 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
713 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
714//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);
715 if (asf->packet_replic_size >= 8) {
716 asf->packet_obj_size = get_le32(pb);
717 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
718 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
719 return -1;
720 }
721 asf->packet_frag_timestamp = get_le32(pb); // timestamp
559a55ad
MN
722 if(asf->packet_replic_size >= 8+38+4){
723// for(i=0; i<asf->packet_replic_size-8; i++)
724// av_log(s, AV_LOG_DEBUG, "%02X ",get_byte(pb));
725// av_log(s, AV_LOG_DEBUG, "\n");
726 url_fskip(pb, 10);
727 ts0= get_le64(pb);
728 ts1= get_le64(pb);
729 url_fskip(pb, 12);
730 get_le32(pb);
731 url_fskip(pb, asf->packet_replic_size - 8 - 38 - 4);
732 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
733 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
734 }else
735 url_fskip(pb, asf->packet_replic_size - 8);
ae60a857
MN
736 rsize += asf->packet_replic_size; // FIXME - check validity
737 } else if (asf->packet_replic_size==1){
efc90ebf 738 // multipacket - frag_offset is beginning timestamp
ae60a857
MN
739 asf->packet_time_start = asf->packet_frag_offset;
740 asf->packet_frag_offset = 0;
741 asf->packet_frag_timestamp = asf->packet_timestamp;
742
743 asf->packet_time_delta = get_byte(pb);
744 rsize++;
745 }else if(asf->packet_replic_size!=0){
746 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
747 return -1;
748 }
749 if (asf->packet_flags & 0x01) {
750 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
13f7e4b9
MN
751 if(asf->packet_frag_size > asf->packet_size_left - rsize){
752 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n");
753 return -1;
754 }
ae60a857
MN
755 //printf("Fragsize %d\n", asf->packet_frag_size);
756 } else {
757 asf->packet_frag_size = asf->packet_size_left - rsize;
758 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
759 }
760 if (asf->packet_replic_size == 1) {
761 asf->packet_multi_size = asf->packet_frag_size;
762 if (asf->packet_multi_size > asf->packet_size_left)
763 return -1;
764 }
765 asf->packet_size_left -= rsize;
766 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
767
768 return 0;
769}
770
277a28e8
RB
771/**
772 * Parse data from individual ASF packets (which were previously loaded
773 * with asf_get_packet()).
774 * @param s demux context
775 * @param pb context to read data from
776 * @param pkt pointer to store packet data into
777 * @returns 0 if data was stored in pkt, <0 on error or 1 if more ASF
778 * packets need to be loaded (through asf_get_packet())
779 */
780static int ff_asf_parse_packet(AVFormatContext *s, ByteIOContext *pb, AVPacket *pkt)
de6d9b64
FB
781{
782 ASFContext *asf = s->priv_data;
2a10020b 783 ASFStream *asf_st = 0;
2a10020b 784 for (;;) {
ceba96cb 785 if(url_feof(pb))
799a0722 786 return AVERROR_EOF;
bb270c08
DB
787 if (asf->packet_size_left < FRAME_HEADER_SIZE
788 || asf->packet_segments < 1) {
789 //asf->packet_size_left <= asf->packet_padsize) {
790 int ret = asf->packet_size_left + asf->packet_padsize;
949b1a13 791 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
5b11e081 792 assert(ret>=0);
bb270c08
DB
793 /* fail safe */
794 url_fskip(pb, ret);
b04d5d31 795
022f0b7c 796 asf->packet_pos= url_ftell(pb);
b6eaae39
KED
797 if (asf->data_object_size != (uint64_t)-1 &&
798 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
1d0036b0 799 return AVERROR_EOF; /* Do not exceed the size of the data object */
f27544fd 800 return 1;
bb270c08
DB
801 }
802 if (asf->packet_time_start == 0) {
b0d75d60 803 if(asf_read_frame_header(s, pb) < 0){
ae60a857 804 asf->packet_segments= 0;
236116cb 805 continue;
1305a9d5 806 }
bb270c08 807 if (asf->stream_index < 0
f3356e9c
MN
808 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
809 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
810 ) {
1359c2d4 811 asf->packet_time_start = 0;
bb270c08
DB
812 /* unhandled packet (should not happen) */
813 url_fskip(pb, asf->packet_frag_size);
814 asf->packet_size_left -= asf->packet_frag_size;
b9866ebc 815 if(asf->stream_index < 0)
ae60a857 816 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
1359c2d4 817 continue;
bb270c08
DB
818 }
819 asf->asf_st = s->streams[asf->stream_index]->priv_data;
820 }
821 asf_st = asf->asf_st;
822
bb270c08 823 if (asf->packet_replic_size == 1) {
efc90ebf 824 // frag_offset is here used as the beginning timestamp
bb270c08
DB
825 asf->packet_frag_timestamp = asf->packet_time_start;
826 asf->packet_time_start += asf->packet_time_delta;
827 asf->packet_obj_size = asf->packet_frag_size = get_byte(pb);
828 asf->packet_size_left--;
2141dc37 829 asf->packet_multi_size--;
bb270c08
DB
830 if (asf->packet_multi_size < asf->packet_obj_size)
831 {
832 asf->packet_time_start = 0;
833 url_fskip(pb, asf->packet_multi_size);
834 asf->packet_size_left -= asf->packet_multi_size;
2141dc37 835 continue;
bb270c08
DB
836 }
837 asf->packet_multi_size -= asf->packet_obj_size;
838 //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);
839 }
60ff1c44
MN
840 if( /*asf->packet_frag_size == asf->packet_obj_size*/
841 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
842 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
843 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
844 asf_st->frag_offset, asf->packet_frag_size,
845 asf->packet_obj_size, asf_st->pkt.size);
846 asf->packet_obj_size= asf_st->pkt.size;
847 }
848
f8f0a0bd
MN
849 if ( asf_st->pkt.size != asf->packet_obj_size
850 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
200026aa
MN
851 if(asf_st->pkt.data){
852 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
853 asf_st->frag_offset = 0;
854 av_free_packet(&asf_st->pkt);
855 }
bb270c08
DB
856 /* new packet */
857 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
858 asf_st->seq = asf->packet_seq;
eb63b051 859 asf_st->pkt.dts = asf->packet_frag_timestamp;
bb270c08 860 asf_st->pkt.stream_index = asf->stream_index;
115329f1
DB
861 asf_st->pkt.pos =
862 asf_st->packet_pos= asf->packet_pos;
863//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
82b9e4a2 864//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY,
01f4895c 865//s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size);
bb270c08
DB
866 if (s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO)
867 asf->packet_key_frame = 1;
868 if (asf->packet_key_frame)
869 asf_st->pkt.flags |= PKT_FLAG_KEY;
870 }
871
872 /* read data */
873 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
91d19d47 874 // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
bb270c08
DB
875 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
876 asf->packet_size_left -= asf->packet_frag_size;
877 if (asf->packet_size_left < 0)
2141dc37 878 continue;
4c71d727
MN
879
880 if( asf->packet_frag_offset >= asf_st->pkt.size
881 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
882 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
883 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
884 continue;
885 }
886
bb270c08
DB
887 get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
888 asf->packet_frag_size);
72be7db4
RD
889 if (s->key && s->keylen == 20)
890 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
891 asf->packet_frag_size);
bb270c08
DB
892 asf_st->frag_offset += asf->packet_frag_size;
893 /* test if whole packet is read */
894 if (asf_st->frag_offset == asf_st->pkt.size) {
da0b94f5
MN
895 //workaround for macroshit radio DVR-MS files
896 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
897 && asf_st->pkt.size > 100){
898 int i;
899 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
900 if(i == asf_st->pkt.size){
901 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
902 asf_st->frag_offset = 0;
903 av_free_packet(&asf_st->pkt);
904 continue;
905 }
906 }
907
bb270c08
DB
908 /* return packet */
909 if (asf_st->ds_span > 1) {
05219463 910 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
b43387d4 911 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 912 }else{
bb270c08 913 /* packet descrambling */
191e8ca7 914 uint8_t *newdata = av_malloc(asf_st->pkt.size);
bb270c08
DB
915 if (newdata) {
916 int offset = 0;
917 while (offset < asf_st->pkt.size) {
918 int off = offset / asf_st->ds_chunk_size;
919 int row = off / asf_st->ds_span;
920 int col = off % asf_st->ds_span;
921 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
922 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
05219463
MN
923
924 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
925 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
bb270c08
DB
926 memcpy(newdata + offset,
927 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
928 asf_st->ds_chunk_size);
929 offset += asf_st->ds_chunk_size;
930 }
931 av_free(asf_st->pkt.data);
932 asf_st->pkt.data = newdata;
933 }
05219463 934 }
bb270c08
DB
935 }
936 asf_st->frag_offset = 0;
b83e83b9 937 *pkt= asf_st->pkt;
bb270c08
DB
938 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
939 asf_st->pkt.size = 0;
940 asf_st->pkt.data = 0;
941 break; // packet completed
942 }
de6d9b64 943 }
de6d9b64
FB
944 return 0;
945}
946
f27544fd
RB
947static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
948{
949 ASFContext *asf = s->priv_data;
950
951 for (;;) {
952 int ret;
953
954 /* parse cached packets, if any */
1d217cdb 955 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
f27544fd 956 return ret;
1d217cdb 957 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
f27544fd
RB
958 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
959 asf->packet_time_start = 0;
960 }
961
962 return 0;
963}
964
38376f00
KK
965// Added to support seeking after packets have been read
966// If information is not reset, read_packet fails due to
967// leftover information from previous reads
968static void asf_reset_header(AVFormatContext *s)
969{
970 ASFContext *asf = s->priv_data;
82b9e4a2
MN
971 ASFStream *asf_st;
972 int i;
38376f00
KK
973
974 asf->packet_nb_frames = 0;
38376f00
KK
975 asf->packet_size_left = 0;
976 asf->packet_segments = 0;
977 asf->packet_flags = 0;
978 asf->packet_property = 0;
979 asf->packet_timestamp = 0;
980 asf->packet_segsizetype = 0;
981 asf->packet_segments = 0;
982 asf->packet_seq = 0;
983 asf->packet_replic_size = 0;
984 asf->packet_key_frame = 0;
985 asf->packet_padsize = 0;
986 asf->packet_frag_offset = 0;
987 asf->packet_frag_size = 0;
988 asf->packet_frag_timestamp = 0;
989 asf->packet_multi_size = 0;
990 asf->packet_obj_size = 0;
991 asf->packet_time_delta = 0;
992 asf->packet_time_start = 0;
115329f1 993
82b9e4a2
MN
994 for(i=0; i<s->nb_streams; i++){
995 asf_st= s->streams[i]->priv_data;
996 av_free_packet(&asf_st->pkt);
997 asf_st->frag_offset=0;
998 asf_st->seq=0;
999 }
1000 asf->asf_st= NULL;
38376f00
KK
1001}
1002
5d25d2a9
DB
1003static int asf_read_close(AVFormatContext *s)
1004{
1005 int i;
1006
1007 asf_reset_header(s);
1008 for(i=0;i<s->nb_streams;i++) {
1009 AVStream *st = s->streams[i];
5d25d2a9
DB
1010 av_free(st->codec->palctrl);
1011 }
1012 return 0;
1013}
1014
8d14a25c 1015static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
38376f00 1016{
38376f00 1017 AVPacket pkt1, *pkt = &pkt1;
82b9e4a2 1018 ASFStream *asf_st;
580fb5e7 1019 int64_t pts;
82b9e4a2 1020 int64_t pos= *ppos;
3e9245a9
MN
1021 int i;
1022 int64_t start_pos[s->nb_streams];
115329f1 1023
3e9245a9
MN
1024 for(i=0; i<s->nb_streams; i++){
1025 start_pos[i]= pos;
1026 }
115329f1 1027
68a10b40 1028 if (s->packet_size > 0)
b098b309 1029 pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
8d14a25c 1030 *ppos= pos;
899681cd 1031 url_fseek(s->pb, pos, SEEK_SET);
115329f1 1032
82b9e4a2 1033//printf("asf_read_pts\n");
82b9e4a2 1034 asf_reset_header(s);
3e9245a9 1035 for(;;){
82b9e4a2 1036 if (av_read_frame(s, pkt) < 0){
0b93103a 1037 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
bb270c08 1038 return AV_NOPTS_VALUE;
82b9e4a2 1039 }
115329f1 1040
38cf2a72 1041 pts= pkt->pts;
580fb5e7
MN
1042
1043 av_free_packet(pkt);
3e9245a9
MN
1044 if(pkt->flags&PKT_FLAG_KEY){
1045 i= pkt->stream_index;
1046
1047 asf_st= s->streams[i]->priv_data;
1048
91d19d47 1049// assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
8d14a25c 1050 pos= asf_st->packet_pos;
09646bab 1051
52e54612 1052 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
8d14a25c 1053 start_pos[i]= asf_st->packet_pos + 1;
115329f1 1054
3e9245a9
MN
1055 if(pkt->stream_index == stream_index)
1056 break;
1057 }
1058 }
1059
1060 *ppos= pos;
949b1a13 1061//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
580fb5e7
MN
1062
1063 return pts;
38376f00
KK
1064}
1065
56c96a22
MN
1066static void asf_build_simple_index(AVFormatContext *s, int stream_index)
1067{
b8b00d94 1068 ff_asf_guid g;
56c96a22 1069 ASFContext *asf = s->priv_data;
d728e3cd 1070 int64_t current_pos= url_ftell(s->pb);
56c96a22 1071 int i;
56c96a22 1072
899681cd
BA
1073 url_fseek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
1074 get_guid(s->pb, &g);
4d0c3dc0 1075 if (!guidcmp(&g, &index_guid)) {
134271c2 1076 int64_t itime, last_pos=-1;
d728e3cd 1077 int pct, ict;
dc1ed614 1078 int64_t av_unused gsize= get_le64(s->pb);
899681cd
BA
1079 get_guid(s->pb, &g);
1080 itime=get_le64(s->pb);
1081 pct=get_le32(s->pb);
1082 ict=get_le32(s->pb);
871e62e5 1083 av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
56c96a22
MN
1084
1085 for (i=0;i<ict;i++){
899681cd
BA
1086 int pktnum=get_le32(s->pb);
1087 int pktct =get_le16(s->pb);
91d19d47 1088 int64_t pos = s->data_offset + s->packet_size*(int64_t)pktnum;
d728e3cd 1089 int64_t index_pts= av_rescale(itime, i, 10000);
56c96a22 1090
134271c2 1091 if(pos != last_pos){
d728e3cd 1092 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct);
91d19d47 1093 av_add_index_entry(s->streams[stream_index], pos, index_pts, s->packet_size, 0, AVINDEX_KEYFRAME);
134271c2
MN
1094 last_pos=pos;
1095 }
56c96a22 1096 }
52e54612 1097 asf->index_read= 1;
56c96a22 1098 }
899681cd 1099 url_fseek(s->pb, current_pos, SEEK_SET);
56c96a22
MN
1100}
1101
3ba1438d 1102static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
2a10020b 1103{
afda223c 1104 ASFContext *asf = s->priv_data;
56c96a22
MN
1105 AVStream *st = s->streams[stream_index];
1106 int64_t pos;
1107 int index;
115329f1 1108
91d19d47 1109 if (s->packet_size <= 0)
38376f00
KK
1110 return -1;
1111
fa13095a 1112 /* Try using the protocol's read_seek if available */
fd2982a0 1113 if(s->pb) {
fa13095a
BA
1114 int ret = av_url_read_fseek(s->pb, stream_index, pts, flags);
1115 if(ret >= 0)
1116 asf_reset_header(s);
fd2982a0 1117 if (ret != AVERROR(ENOSYS))
cd31f8dc 1118 return ret;
fa13095a
BA
1119 }
1120
52e54612 1121 if (!asf->index_read)
56c96a22
MN
1122 asf_build_simple_index(s, stream_index);
1123
52e54612 1124 if(!(asf->index_read && st->index_entries)){
56c96a22
MN
1125 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
1126 return -1;
1127 }else{
1128 index= av_index_search_timestamp(st, pts, flags);
1129 if(index<0)
1130 return -1;
1131
1132 /* find the position */
1133 pos = st->index_entries[index].pos;
56c96a22
MN
1134
1135 // various attempts to find key frame have failed so far
1136 // asf_reset_header(s);
899681cd 1137 // url_fseek(s->pb, pos, SEEK_SET);
56c96a22
MN
1138 // key_pos = pos;
1139 // for(i=0;i<16;i++){
899681cd 1140 // pos = url_ftell(s->pb);
56c96a22
MN
1141 // if (av_read_frame(s, &pkt) < 0){
1142 // av_log(s, AV_LOG_INFO, "seek failed\n");
1143 // return -1;
1144 // }
1145 // asf_st = s->streams[stream_index]->priv_data;
1146 // pos += st->parser->frame_offset;
1147 //
1148 // if (pkt.size > b) {
1149 // b = pkt.size;
1150 // key_pos = pos;
1151 // }
1152 //
1153 // av_free_packet(&pkt);
1154 // }
1155
1156 /* do the seek */
871e62e5 1157 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
899681cd 1158 url_fseek(s->pb, pos, SEEK_SET);
56c96a22 1159 }
38376f00
KK
1160 asf_reset_header(s);
1161 return 0;
2a10020b
ZK
1162}
1163
ff70e601 1164AVInputFormat asf_demuxer = {
c9a65ca8 1165 "asf",
bde15e74 1166 NULL_IF_CONFIG_SMALL("ASF format"),
c9a65ca8
FB
1167 sizeof(ASFContext),
1168 asf_probe,
1169 asf_read_header,
1170 asf_read_packet,
1171 asf_read_close,
2a10020b 1172 asf_read_seek,
8d14a25c 1173 asf_read_pts,
719e721a 1174 .metadata_conv = ff_asf_metadata_conv,
c9a65ca8 1175};