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Ignore extradata & w/h in asf/dvr.
[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
30cdfb49 38#define ASF_MAX_STREAMS 127
615b92fd 39#define FRAME_HEADER_SIZE 17
115329f1 40// Fix Me! FRAME_HEADER_SIZE may be different.
615b92fd 41
b8b00d94 42static const ff_asf_guid index_guid = {
24c14d6d 43 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
de6d9b64
FB		 44};
45
b8b00d94 46static const ff_asf_guid stream_bitrate_guid = { /* (http://get.to/sdp) */
0e3b6a6f
RM		 47 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
48};
de6d9b64
FB		 49/**********************************/
50/* decoding */
51
c9d7cd6d
BC		 52static int guidcmp(const void *g1, const void *g2)
53{
54 return memcmp(g1, g2, sizeof(ff_asf_guid));
55}
de6d9b64
FB		 56
57#ifdef DEBUG
5082f759 58#define PRINT_IF_GUID(g,cmp) \
4d0c3dc0 59if (!guidcmp(g, &cmp)) \
f94981ea 60 dprintf(NULL, "(GUID: %s) ", #cmp)
5082f759 61
b8b00d94 62static void print_guid(const ff_asf_guid *g)
de6d9b64
FB		 63{
64 int i;
17af0525
AJ		 65 PRINT_IF_GUID(g, ff_asf_header);
66 else PRINT_IF_GUID(g, ff_asf_file_header);
67 else PRINT_IF_GUID(g, ff_asf_stream_header);
68 else PRINT_IF_GUID(g, ff_asf_audio_stream);
69 else PRINT_IF_GUID(g, ff_asf_audio_conceal_none);
70 else PRINT_IF_GUID(g, ff_asf_video_stream);
71 else PRINT_IF_GUID(g, ff_asf_video_conceal_none);
72 else PRINT_IF_GUID(g, ff_asf_command_stream);
73 else PRINT_IF_GUID(g, ff_asf_comment_header);
74 else PRINT_IF_GUID(g, ff_asf_codec_comment_header);
75 else PRINT_IF_GUID(g, ff_asf_codec_comment1_header);
76 else PRINT_IF_GUID(g, ff_asf_data_header);
5082f759 77 else PRINT_IF_GUID(g, index_guid);
17af0525
AJ		 78 else PRINT_IF_GUID(g, ff_asf_head1_guid);
79 else PRINT_IF_GUID(g, ff_asf_head2_guid);
80 else PRINT_IF_GUID(g, ff_asf_my_guid);
81 else PRINT_IF_GUID(g, ff_asf_ext_stream_header);
82 else PRINT_IF_GUID(g, ff_asf_extended_content_header);
83 else PRINT_IF_GUID(g, ff_asf_ext_stream_embed_stream_header);
84 else PRINT_IF_GUID(g, ff_asf_ext_stream_audio_stream);
85 else PRINT_IF_GUID(g, ff_asf_metadata_header);
88b51ea9 86 else PRINT_IF_GUID(g, ff_asf_marker_header);
0e3b6a6f 87 else PRINT_IF_GUID(g, stream_bitrate_guid);
5f1ac36d 88 else PRINT_IF_GUID(g, ff_asf_language_guid);
5082f759 89 else
f94981ea 90 dprintf(NULL, "(GUID: unknown) ");
24c14d6d 91 for(i=0;i<16;i++)
f94981ea
MR		 92 dprintf(NULL, " 0x%02x,", (*g)[i]);
93 dprintf(NULL, "}\n");
de6d9b64 94}
6df84c3a 95#undef PRINT_IF_GUID
f94981ea
MR		 96#else
97#define print_guid(g)
de6d9b64
FB		 98#endif
99
b8b00d94 100static void get_guid(ByteIOContext *s, ff_asf_guid *g)
de6d9b64 101{
24c14d6d 102 assert(sizeof(*g) == 16);
3dc761a4 103 get_buffer(s, *g, sizeof(*g));
de6d9b64
FB		 104}
105
106#if 0
107static void get_str16(ByteIOContext *pb, char *buf, int buf_size)
108{
109 int len, c;
110 char *q;
111
112 len = get_le16(pb);
113 q = buf;
114 while (len > 0) {
115 c = get_le16(pb);
116 if ((q - buf) < buf_size - 1)
117 *q++ = c;
118 len--;
119 }
120 *q = '\0';
121}
122#endif
123
124static void get_str16_nolen(ByteIOContext *pb, int len, char *buf, int buf_size)
125{
db5c43b4 126 char* q = buf;
fce44489 127 while (len > 1) {
db5c43b4 128 uint8_t tmp;
fce44489
AK		 129 uint32_t ch;
130
131 GET_UTF16(ch, (len -= 2) >= 0 ? get_le16(pb) : 0, break;)
132 PUT_UTF8(ch, tmp, if (q - buf < buf_size - 1) *q++ = tmp;)
de6d9b64 133 }
46b4019b
BC		 134 if (len > 0)
135 url_fskip(pb, len);
de6d9b64
FB		 136 *q = '\0';
137}
138
c9a65ca8
FB		 139static int asf_probe(AVProbeData *pd)
140{
c9a65ca8 141 /* check file header */
4d0c3dc0 142 if (!guidcmp(pd->buf, &ff_asf_header))
c9a65ca8
FB		 143 return AVPROBE_SCORE_MAX;
144 else
145 return 0;
146}
147
30e88789
MN		 148static int get_value(ByteIOContext *pb, int type){
149 switch(type){
150 case 2: return get_le32(pb);
151 case 3: return get_le32(pb);
152 case 4: return get_le64(pb);
153 case 5: return get_le16(pb);
154 default:return INT_MIN;
155 }
156}
157
20e2a7ae
AJ		 158static void get_tag(AVFormatContext *s, const char *key, int type, int len)
159{
12ad6671
MN		 160 char *value;
161
fce44489 162 if ((unsigned)len >= (UINT_MAX - 1)/2)
12ad6671
MN		 163 return;
164
fce44489 165 value = av_malloc(2*len+1);
12ad6671
MN		 166 if (!value)
167 return;
168
6538c0f1 169 if (type == 0) { // UTF16-LE
fce44489 170 get_str16_nolen(s->pb, len, value, 2*len + 1);
6538c0f1 171 } else if (type > 1 && type <= 5) { // boolean or DWORD or QWORD or WORD
20e2a7ae 172 uint64_t num = get_value(s->pb, type);
12ad6671 173 snprintf(value, len, "%"PRIu64, num);
20e2a7ae
AJ		 174 } else {
175 url_fskip(s->pb, len);
47794b9d 176 av_freep(&value);
27e74927 177 av_log(s, AV_LOG_DEBUG, "Unsupported value type %d in tag %s.\n", type, key);
20e2a7ae
AJ		 178 return;
179 }
fce44489
AK		 180 av_metadata_set2(&s->metadata, key, value, 0);
181 av_freep(&value);
20e2a7ae
AJ		 182}
183
de6d9b64
FB		 184static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
185{
c9a65ca8 186 ASFContext *asf = s->priv_data;
b8b00d94 187 ff_asf_guid g;
899681cd 188 ByteIOContext *pb = s->pb;
de6d9b64
FB		 189 AVStream *st;
190 ASFStream *asf_st;
e095026a 191 int size, i;
0c1a9eda 192 int64_t gsize;
30e88789 193 AVRational dar[128];
d8470737 194 uint32_t bitrate[128];
30e88789
MN		 195
196 memset(dar, 0, sizeof(dar));
d8470737 197 memset(bitrate, 0, sizeof(bitrate));
de6d9b64 198
de6d9b64 199 get_guid(pb, &g);
4d0c3dc0 200 if (guidcmp(&g, &ff_asf_header))
ccafd472 201 return -1;
de6d9b64
FB		 202 get_le64(pb);
203 get_le32(pb);
204 get_byte(pb);
205 get_byte(pb);
2141dc37 206 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
de6d9b64 207 for(;;) {
cb0061d4 208 uint64_t gpos= url_ftell(pb);
de6d9b64
FB		 209 get_guid(pb, &g);
210 gsize = get_le64(pb);
cb0061d4 211 dprintf(s, "%08"PRIx64": ", gpos);
de6d9b64 212 print_guid(&g);
f94981ea 213 dprintf(s, " size=0x%"PRIx64"\n", gsize);
4d0c3dc0 214 if (!guidcmp(&g, &ff_asf_data_header)) {
09d9672a
MN		 215 asf->data_object_offset = url_ftell(pb);
216 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
217 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
218 asf->data_object_size = gsize - 24;
219 } else {
220 asf->data_object_size = (uint64_t)-1;
221 }
222 break;
223 }
de6d9b64 224 if (gsize < 24)
ccafd472 225 return -1;
4d0c3dc0 226 if (!guidcmp(&g, &ff_asf_file_header)) {
2a10020b 227 get_guid(pb, &asf->hdr.guid);
bb270c08
DB		 228 asf->hdr.file_size = get_le64(pb);
229 asf->hdr.create_time = get_le64(pb);
6bb2a2df 230 asf->nb_packets = get_le64(pb);
bb270c08 231 asf->hdr.play_time = get_le64(pb);
b4bbcd63 232 asf->hdr.send_time = get_le64(pb);
bb270c08
DB		 233 asf->hdr.preroll = get_le32(pb);
234 asf->hdr.ignore = get_le32(pb);
235 asf->hdr.flags = get_le32(pb);
236 asf->hdr.min_pktsize = get_le32(pb);
237 asf->hdr.max_pktsize = get_le32(pb);
238 asf->hdr.max_bitrate = get_le32(pb);
91d19d47 239 s->packet_size = asf->hdr.max_pktsize;
4d0c3dc0 240 } else if (!guidcmp(&g, &ff_asf_stream_header)) {
72415b2a 241 enum AVMediaType type;
fb65d2ca 242 int type_specific_size, sizeX;
7ad5455c 243 uint64_t total_size;
de6d9b64 244 unsigned int tag1;
371bf806 245 int64_t pos1, pos2, start_time;
6fea687e 246 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
2a10020b 247
30cdfb49
MR		 248 if (s->nb_streams == ASF_MAX_STREAMS) {
249 av_log(s, AV_LOG_ERROR, "too many streams\n");
250 return AVERROR(EINVAL);
251 }
252
de6d9b64
FB		 253 pos1 = url_ftell(pb);
254
247eadca 255 st = av_new_stream(s, 0);
de6d9b64 256 if (!st)
ccafd472 257 return AVERROR(ENOMEM);
9ee91c2f 258 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
de6d9b64
FB		 259 asf_st = av_mallocz(sizeof(ASFStream));
260 if (!asf_st)
ccafd472 261 return AVERROR(ENOMEM);
de6d9b64 262 st->priv_data = asf_st;
371bf806
MN		 263 start_time = asf->hdr.preroll;
264
5f1ac36d
CC		 265 asf_st->stream_language_index = 128; // invalid stream index means no language info
266
73fe1052 267 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
f2086fb5 268 st->duration = asf->hdr.play_time /
371bf806 269 (10000000 / 1000) - start_time;
73fe1052 270 }
de6d9b64 271 get_guid(pb, &g);
88141c91
MN		 272
273 test_for_ext_stream_audio = 0;
4d0c3dc0 274 if (!guidcmp(&g, &ff_asf_audio_stream)) {
72415b2a 275 type = AVMEDIA_TYPE_AUDIO;
4d0c3dc0 276 } else if (!guidcmp(&g, &ff_asf_video_stream)) {
72415b2a 277 type = AVMEDIA_TYPE_VIDEO;
4d0c3dc0 278 } else if (!guidcmp(&g, &ff_asf_command_stream)) {
72415b2a 279 type = AVMEDIA_TYPE_DATA;
4d0c3dc0 280 } else if (!guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
88141c91 281 test_for_ext_stream_audio = 1;
72415b2a 282 type = AVMEDIA_TYPE_UNKNOWN;
de6d9b64 283 } else {
ccafd472 284 return -1;
de6d9b64
FB		 285 }
286 get_guid(pb, &g);
287 total_size = get_le64(pb);
2e7973bb 288 type_specific_size = get_le32(pb);
de6d9b64 289 get_le32(pb);
bb270c08 290 st->id = get_le16(pb) & 0x7f; /* stream id */
2a10020b 291 // mapping of asf ID to AV stream ID;
247eadca 292 asf->asfid2avid[st->id] = s->nb_streams - 1;
2a10020b 293
de6d9b64 294 get_le32(pb);
88141c91
MN		 295
296 if (test_for_ext_stream_audio) {
297 get_guid(pb, &g);
4d0c3dc0 298 if (!guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
72415b2a 299 type = AVMEDIA_TYPE_AUDIO;
6fea687e 300 is_dvr_ms_audio=1;
88141c91
MN		 301 get_guid(pb, &g);
302 get_le32(pb);
303 get_le32(pb);
304 get_le32(pb);
305 get_guid(pb, &g);
306 get_le32(pb);
307 }
308 }
309
bb270c08 310 st->codec->codec_type = type;
72415b2a 311 if (type == AVMEDIA_TYPE_AUDIO) {
1a40491e 312 ff_get_wav_header(pb, st->codec, type_specific_size);
6fea687e
JD		 313 if (is_dvr_ms_audio) {
314 // codec_id and codec_tag are unreliable in dvr_ms
315 // files. Set them later by probing stream.
0bef08e5 316 st->codec->codec_id = CODEC_ID_PROBE;
6fea687e
JD		 317 st->codec->codec_tag = 0;
318 }
e7f73adb
AC		 319 if (st->codec->codec_id == CODEC_ID_AAC) {
320 st->need_parsing = AVSTREAM_PARSE_NONE;
321 } else {
e9259f8d 322 st->need_parsing = AVSTREAM_PARSE_FULL;
e7f73adb 323 }
bb270c08
DB		 324 /* We have to init the frame size at some point .... */
325 pos2 = url_ftell(pb);
b9c6d01b 326 if (gsize >= (pos2 + 8 - pos1 + 24)) {
bb270c08
DB		 327 asf_st->ds_span = get_byte(pb);
328 asf_st->ds_packet_size = get_le16(pb);
329 asf_st->ds_chunk_size = get_le16(pb);
6bb2a2df
MN		 330 get_le16(pb); //ds_data_size
331 get_byte(pb); //ds_silence_data
bb270c08
DB		 332 }
333 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
334 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
335 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
336 if (asf_st->ds_span > 1) {
337 if (!asf_st->ds_chunk_size
05219463
MN		 338 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
339 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
bb270c08
DB		 340 asf_st->ds_span = 0; // disable descrambling
341 }
01f4895c 342 switch (st->codec->codec_id) {
80783dc2 343 case CODEC_ID_MP3:
01f4895c 344 st->codec->frame_size = MPA_FRAME_SIZE;
f80c1ac0
PG		 345 break;
346 case CODEC_ID_PCM_S16LE:
347 case CODEC_ID_PCM_S16BE:
348 case CODEC_ID_PCM_U16LE:
349 case CODEC_ID_PCM_U16BE:
350 case CODEC_ID_PCM_S8:
351 case CODEC_ID_PCM_U8:
352 case CODEC_ID_PCM_ALAW:
353 case CODEC_ID_PCM_MULAW:
01f4895c 354 st->codec->frame_size = 1;
f80c1ac0
PG		 355 break;
356 default:
357 /* This is probably wrong, but it prevents a crash later */
01f4895c 358 st->codec->frame_size = 1;
f80c1ac0
PG		 359 break;
360 }
72415b2a 361 } else if (type == AVMEDIA_TYPE_VIDEO) {
bb270c08 362 get_le32(pb);
de6d9b64
FB		 363 get_le32(pb);
364 get_byte(pb);
365 size = get_le16(pb); /* size */
0ffd77b9 366 sizeX= get_le32(pb); /* size */
01f4895c 367 st->codec->width = get_le32(pb);
bb270c08 368 st->codec->height = get_le32(pb);
2a10020b 369 /* not available for asf */
de6d9b64 370 get_le16(pb); /* panes */
dd1c8f3e 371 st->codec->bits_per_coded_sample = get_le16(pb); /* depth */
de6d9b64 372 tag1 = get_le32(pb);
bb270c08 373 url_fskip(pb, 20);
871e62e5 374// av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
0ffd77b9 375 size= sizeX;
bb270c08
DB		 376 if (size > 40) {
377 st->codec->extradata_size = size - 40;
378 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
379 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
380 }
5e29abf8 381
6d050dd6 382 /* Extract palette from extradata if bpp <= 8 */
383 /* This code assumes that extradata contains only palette */
384 /* This is true for all paletted codecs implemented in ffmpeg */
385 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
386 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
63613fe6 387#if HAVE_BIGENDIAN
6d050dd6 388 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
389 st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
5e29abf8 390#else
6d050dd6 391 memcpy(st->codec->palctrl->palette, st->codec->extradata,
392 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
5e29abf8 393#endif
6d050dd6 394 st->codec->palctrl->palette_changed = 1;
395 }
5e29abf8 396
01f4895c 397 st->codec->codec_tag = tag1;
1a40491e 398 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
31247669 399 if(tag1 == MKTAG('D', 'V', 'R', ' ')){
57004ff1 400 st->need_parsing = AVSTREAM_PARSE_FULL;
31247669
MN		 401 // issue658 containse wrong w/h and MS even puts a fake seq header with wrong w/h in extradata while a correct one is in te stream. maximum lameness
402 st->codec->width =
403 st->codec->height = 0;
404 av_freep(&st->codec->extradata);
405 st->codec->extradata_size=0;
406 }
1ed87f80
AC		 407 if(st->codec->codec_id == CODEC_ID_H264)
408 st->need_parsing = AVSTREAM_PARSE_FULL_ONCE;
de6d9b64
FB		 409 }
410 pos2 = url_ftell(pb);
411 url_fskip(pb, gsize - (pos2 - pos1 + 24));
4d0c3dc0 412 } else if (!guidcmp(&g, &ff_asf_comment_header)) {
de6d9b64
FB		 413 int len1, len2, len3, len4, len5;
414
415 len1 = get_le16(pb);
416 len2 = get_le16(pb);
417 len3 = get_le16(pb);
418 len4 = get_le16(pb);
419 len5 = get_le16(pb);
20e2a7ae
AJ		 420 get_tag(s, "title" , 0, len1);
421 get_tag(s, "author" , 0, len2);
422 get_tag(s, "copyright", 0, len3);
423 get_tag(s, "comment" , 0, len4);
bb270c08 424 url_fskip(pb, len5);
4d0c3dc0 425 } else if (!guidcmp(&g, &stream_bitrate_guid)) {
0e3b6a6f
RM		 426 int stream_count = get_le16(pb);
427 int j;
428
871e62e5
BF		 429// av_log(s, AV_LOG_ERROR, "stream bitrate properties\n");
430// av_log(s, AV_LOG_ERROR, "streams %d\n", streams);
0e3b6a6f
RM		 431 for(j = 0; j < stream_count; j++) {
432 int flags, bitrate, stream_id;
433
434 flags= get_le16(pb);
435 bitrate= get_le32(pb);
436 stream_id= (flags & 0x7f);
871e62e5 437// av_log(s, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate);
a9054d91 438 asf->stream_bitrates[stream_id]= bitrate;
0e3b6a6f 439 }
5f1ac36d
CC		 440 } else if (!guidcmp(&g, &ff_asf_language_guid)) {
441 int j;
442 int stream_count = get_le16(pb);
443 for(j = 0; j < stream_count; j++) {
444 char lang[6];
445 unsigned int lang_len = get_byte(pb);
446 get_str16_nolen(pb, lang_len, lang, sizeof(lang));
447 if (j < 128)
448 av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
449 }
4d0c3dc0 450 } else if (!guidcmp(&g, &ff_asf_extended_content_header)) {
6d050dd6 451 int desc_count, i;
452
453 desc_count = get_le16(pb);
454 for(i=0;i<desc_count;i++) {
455 int name_len,value_type,value_len;
456 char name[1024];
457
458 name_len = get_le16(pb);
4a3104a9
AK		 459 if (name_len%2) // must be even, broken lavf versions wrote len-1
460 name_len += 1;
6d050dd6 461 get_str16_nolen(pb, name_len, name, sizeof(name));
462 value_type = get_le16(pb);
463 value_len = get_le16(pb);
514b73cf 464 if (!value_type && value_len%2)
4a3104a9 465 value_len += 1;
6d050dd6 466 get_tag(s, name, value_type, value_len);
467 }
4d0c3dc0 468 } else if (!guidcmp(&g, &ff_asf_metadata_header)) {
30e88789
MN		 469 int n, stream_num, name_len, value_len, value_type, value_num;
470 n = get_le16(pb);
471
472 for(i=0;i<n;i++) {
473 char name[1024];
474
475 get_le16(pb); //lang_list_index
476 stream_num= get_le16(pb);
477 name_len= get_le16(pb);
478 value_type= get_le16(pb);
479 value_len= get_le32(pb);
480
481 get_str16_nolen(pb, name_len, name, sizeof(name));
871e62e5 482//av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
755bfeab 483 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		 484 url_fskip(pb, value_len - 2);
485
486 if(stream_num<128){
487 if (!strcmp(name, "AspectRatioX")) dar[stream_num].num= value_num;
488 else if(!strcmp(name, "AspectRatioY")) dar[stream_num].den= value_num;
489 }
490 }
4d0c3dc0 491 } else if (!guidcmp(&g, &ff_asf_ext_stream_header)) {
88141c91 492 int ext_len, payload_ext_ct, stream_ct;
d8470737 493 uint32_t ext_d, leak_rate, stream_num;
5f1ac36d 494 unsigned int stream_languageid_index;
88141c91 495
de3ae959
MN		 496 get_le64(pb); // starttime
497 get_le64(pb); // endtime
d8470737 498 leak_rate = get_le32(pb); // leak-datarate
de3ae959
MN		 499 get_le32(pb); // bucket-datasize
500 get_le32(pb); // init-bucket-fullness
501 get_le32(pb); // alt-leak-datarate
502 get_le32(pb); // alt-bucket-datasize
503 get_le32(pb); // alt-init-bucket-fullness
504 get_le32(pb); // max-object-size
505 get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
d8470737 506 stream_num = get_le16(pb); // stream-num
5f1ac36d
CC		 507
508 stream_languageid_index = get_le16(pb); // stream-language-id-index
509 if (stream_num < 128)
510 asf->streams[stream_num].stream_language_index = stream_languageid_index;
511
de3ae959
MN		 512 get_le64(pb); // avg frametime in 100ns units
513 stream_ct = get_le16(pb); //stream-name-count
514 payload_ext_ct = get_le16(pb); //payload-extension-system-count
88141c91 515
d8470737
ZM		 516 if (stream_num < 128)
517 bitrate[stream_num] = leak_rate;
518
88141c91
MN		 519 for (i=0; i<stream_ct; i++){
520 get_le16(pb);
521 ext_len = get_le16(pb);
522 url_fseek(pb, ext_len, SEEK_CUR);
523 }
524
525 for (i=0; i<payload_ext_ct; i++){
526 get_guid(pb, &g);
527 ext_d=get_le16(pb);
528 ext_len=get_le32(pb);
529 url_fseek(pb, ext_len, SEEK_CUR);
530 }
531
532 // there could be a optional stream properties object to follow
533 // if so the next iteration will pick it up
1d4c1c3b 534 continue;
4d0c3dc0 535 } else if (!guidcmp(&g, &ff_asf_head1_guid)) {
de6d9b64
FB		 536 int v1, v2;
537 get_guid(pb, &g);
538 v1 = get_le32(pb);
539 v2 = get_le16(pb);
1d4c1c3b 540 continue;
88b51ea9
VP		 541 } else if (!guidcmp(&g, &ff_asf_marker_header)) {
542 int i, count, name_len;
543 char name[1024];
544
545 get_le64(pb); // reserved 16 bytes
546 get_le64(pb); // ...
547 count = get_le32(pb); // markers count
548 get_le16(pb); // reserved 2 bytes
549 name_len = get_le16(pb); // name length
550 for(i=0;i<name_len;i++){
551 get_byte(pb); // skip the name
552 }
553
554 for(i=0;i<count;i++){
555 int64_t pres_time;
556 int name_len;
557
558 get_le64(pb); // offset, 8 bytes
559 pres_time = get_le64(pb); // presentation time
560 get_le16(pb); // entry length
561 get_le32(pb); // send time
562 get_le32(pb); // flags
563 name_len = get_le32(pb); // name length
564 get_str16_nolen(pb, name_len * 2, name, sizeof(name));
565 ff_new_chapter(s, i, (AVRational){1, 10000000}, pres_time, AV_NOPTS_VALUE, name );
566 }
88141c91 567#if 0
4d0c3dc0 568 } else if (!guidcmp(&g, &ff_asf_codec_comment_header)) {
de6d9b64
FB		 569 int len, v1, n, num;
570 char str[256], *q;
571 char tag[16];
572
573 get_guid(pb, &g);
574 print_guid(&g);
2a10020b 575
de6d9b64
FB		 576 n = get_le32(pb);
577 for(i=0;i<n;i++) {
578 num = get_le16(pb); /* stream number */
579 get_str16(pb, str, sizeof(str));
580 get_str16(pb, str, sizeof(str));
581 len = get_le16(pb);
582 q = tag;
583 while (len > 0) {
584 v1 = get_byte(pb);
585 if ((q - tag) < sizeof(tag) - 1)
586 *q++ = v1;
587 len--;
588 }
589 *q = '\0';
590 }
591#endif
592 } else if (url_feof(pb)) {
ccafd472 593 return -1;
de6d9b64 594 } else {
febd1c90
DT		 595 if (!s->keylen) {
596 if (!guidcmp(&g, &ff_asf_content_encryption)) {
597 av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
598 } else if (!guidcmp(&g, &ff_asf_ext_content_encryption)) {
599 av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
600 } else if (!guidcmp(&g, &ff_asf_digital_signature)) {
601 av_log(s, AV_LOG_WARNING, "Digital signature detected, decoding will likely fail!\n");
602 }
603 }
de6d9b64 604 }
cb0061d4
MN		 605 if(url_ftell(pb) != gpos + gsize)
606 av_log(s, AV_LOG_DEBUG, "gpos mismatch our pos=%"PRIu64", end=%"PRIu64"\n", url_ftell(pb)-gpos, gsize);
607 url_fseek(pb, gpos + gsize, SEEK_SET);
de6d9b64
FB		 608 }
609 get_guid(pb, &g);
610 get_le64(pb);
611 get_byte(pb);
612 get_byte(pb);
2141dc37 613 if (url_feof(pb))
ccafd472 614 return -1;
2141dc37 615 asf->data_offset = url_ftell(pb);
de6d9b64
FB		 616 asf->packet_size_left = 0;
617
30e88789
MN		 618
619 for(i=0; i<128; i++){
620 int stream_num= asf->asfid2avid[i];
d8470737 621 if(stream_num>=0){
59729451
AJ		 622 AVStream *st = s->streams[stream_num];
623 if (!st->codec->bit_rate)
624 st->codec->bit_rate = bitrate[i];
d8470737 625 if (dar[i].num > 0 && dar[i].den > 0)
59729451
AJ		 626 av_reduce(&st->sample_aspect_ratio.num,
627 &st->sample_aspect_ratio.den,
18d915dd 628 dar[i].num, dar[i].den, INT_MAX);
871e62e5 629//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		 630
631 // copy and convert language codes to the frontend
632 if (asf->streams[i].stream_language_index < 128) {
633 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
634 if (rfc1766 && strlen(rfc1766) > 1) {
635 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
636 const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
637 if (iso6392)
2ef6c124 638 av_metadata_set2(&st->metadata, "language", iso6392, 0);
5f1ac36d
CC		 639 }
640 }
30e88789
MN		 641 }
642 }
643
de6d9b64 644 return 0;
de6d9b64
FB		 645}
646
2a10020b
ZK		 647#define DO_2BITS(bits, var, defval) \
648 switch (bits & 3) \
649 { \
650 case 3: var = get_le32(pb); rsize += 4; break; \
651 case 2: var = get_le16(pb); rsize += 2; break; \
652 case 1: var = get_byte(pb); rsize++; break; \
653 default: var = defval; break; \
654 }
655
277a28e8
RB		 656/**
657 * Load a single ASF packet into the demuxer.
658 * @param s demux context
659 * @param pb context to read data from
32e543f8 660 * @return 0 on success, <0 on error
277a28e8
RB		 661 */
662static int ff_asf_get_packet(AVFormatContext *s, ByteIOContext *pb)
de6d9b64
FB		 663{
664 ASFContext *asf = s->priv_data;
2a10020b 665 uint32_t packet_length, padsize;
0c0d17f3 666 int rsize = 8;
0fd9e6f3
MN		 667 int c, d, e, off;
668
68a10b40
RD		 669 // if we do not know packet size, allow skipping up to 32 kB
670 off= 32768;
671 if (s->packet_size > 0)
b098b309 672 off= (url_ftell(pb) - s->data_offset) % s->packet_size + 3;
0fd9e6f3
MN		 673
674 c=d=e=-1;
675 while(off-- > 0){
676 c=d; d=e;
677 e= get_byte(pb);
678 if(c == 0x82 && !d && !e)
679 break;
680 }
115329f1 681
1359c2d4 682 if (c != 0x82) {
2078ca16
RB		 683 /**
684 * This code allows handling of -EAGAIN at packet boundaries (i.e.
685 * if the packet sync code above triggers -EAGAIN). This does not
686 * imply complete -EAGAIN handling support at random positions in
687 * the stream.
688 */
689 if (url_ferror(pb) == AVERROR(EAGAIN))
690 return AVERROR(EAGAIN);
5acdd6e6 691 if (!url_feof(pb))
bb270c08 692 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
2a10020b 693 }
0c0d17f3 694 if ((c & 0x8f) == 0x82) {
0fd9e6f3 695 if (d || e) {
5acdd6e6 696 if (!url_feof(pb))
bb270c08 697 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
f7835507 698 return -1;
bb270c08 699 }
0c0d17f3 700 c= get_byte(pb);
0fd9e6f3 701 d= get_byte(pb);
0c0d17f3
MN		 702 rsize+=3;
703 }else{
704 url_fseek(pb, -1, SEEK_CUR); //FIXME
de6d9b64 705 }
2a10020b 706
0c0d17f3
MN		 707 asf->packet_flags = c;
708 asf->packet_property = d;
2a10020b 709
91d19d47 710 DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
2a10020b
ZK		 711 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
712 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
713
5b11e081 714 //the following checks prevent overflows and infinite loops
96f0731a 715 if(!packet_length || packet_length >= (1U<<29)){
5b11e081 716 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb));
ceba96cb 717 return -1;
5b11e081 718 }
92216453 719 if(padsize >= packet_length){
5b11e081 720 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, url_ftell(pb));
ceba96cb 721 return -1;
5b11e081
MN		 722 }
723
2a10020b 724 asf->packet_timestamp = get_le32(pb);
de6d9b64 725 get_le16(pb); /* duration */
2141dc37 726 // rsize has at least 11 bytes which have to be present
2a10020b
ZK		 727
728 if (asf->packet_flags & 0x01) {
bb270c08 729 asf->packet_segsizetype = get_byte(pb); rsize++;
2a10020b
ZK		 730 asf->packet_segments = asf->packet_segsizetype & 0x3f;
731 } else {
bb270c08 732 asf->packet_segments = 1;
2a10020b
ZK		 733 asf->packet_segsizetype = 0x80;
734 }
735 asf->packet_size_left = packet_length - padsize - rsize;
acbe6cfa
ZK		 736 if (packet_length < asf->hdr.min_pktsize)
737 padsize += asf->hdr.min_pktsize - packet_length;
2a10020b 738 asf->packet_padsize = padsize;
91d19d47 739 dprintf(s, "packet: size=%d padsize=%d left=%d\n", s->packet_size, asf->packet_padsize, asf->packet_size_left);
de6d9b64
FB		 740 return 0;
741}
742
ae60a857
MN		 743/**
744 *
745 * @return <0 if error
746 */
d7fb5a18 747static int asf_read_frame_header(AVFormatContext *s, ByteIOContext *pb){
ae60a857 748 ASFContext *asf = s->priv_data;
ae60a857
MN		 749 int rsize = 1;
750 int num = get_byte(pb);
559a55ad 751 int64_t ts0, ts1;
ae60a857
MN		 752
753 asf->packet_segments--;
754 asf->packet_key_frame = num >> 7;
755 asf->stream_index = asf->asfid2avid[num & 0x7f];
756 // sequence should be ignored!
757 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
758 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
759 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
760//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);
761 if (asf->packet_replic_size >= 8) {
762 asf->packet_obj_size = get_le32(pb);
763 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
764 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
765 return -1;
766 }
767 asf->packet_frag_timestamp = get_le32(pb); // timestamp
559a55ad
MN		 768 if(asf->packet_replic_size >= 8+38+4){
769// for(i=0; i<asf->packet_replic_size-8; i++)
770// av_log(s, AV_LOG_DEBUG, "%02X ",get_byte(pb));
771// av_log(s, AV_LOG_DEBUG, "\n");
772 url_fskip(pb, 10);
773 ts0= get_le64(pb);
774 ts1= get_le64(pb);
775 url_fskip(pb, 12);
776 get_le32(pb);
777 url_fskip(pb, asf->packet_replic_size - 8 - 38 - 4);
778 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
779 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
780 }else
781 url_fskip(pb, asf->packet_replic_size - 8);
ae60a857
MN		 782 rsize += asf->packet_replic_size; // FIXME - check validity
783 } else if (asf->packet_replic_size==1){
efc90ebf 784 // multipacket - frag_offset is beginning timestamp
ae60a857
MN		 785 asf->packet_time_start = asf->packet_frag_offset;
786 asf->packet_frag_offset = 0;
787 asf->packet_frag_timestamp = asf->packet_timestamp;
788
789 asf->packet_time_delta = get_byte(pb);
790 rsize++;
791 }else if(asf->packet_replic_size!=0){
792 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
793 return -1;
794 }
795 if (asf->packet_flags & 0x01) {
796 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
13f7e4b9
MN		 797 if(asf->packet_frag_size > asf->packet_size_left - rsize){
798 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n");
799 return -1;
800 }
ae60a857
MN		 801 //printf("Fragsize %d\n", asf->packet_frag_size);
802 } else {
803 asf->packet_frag_size = asf->packet_size_left - rsize;
804 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
805 }
806 if (asf->packet_replic_size == 1) {
807 asf->packet_multi_size = asf->packet_frag_size;
808 if (asf->packet_multi_size > asf->packet_size_left)
809 return -1;
810 }
811 asf->packet_size_left -= rsize;
812 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
813
814 return 0;
815}
816
277a28e8
RB		 817/**
818 * Parse data from individual ASF packets (which were previously loaded
819 * with asf_get_packet()).
820 * @param s demux context
821 * @param pb context to read data from
822 * @param pkt pointer to store packet data into
32e543f8 823 * @return 0 if data was stored in pkt, <0 on error or 1 if more ASF
277a28e8
RB		 824 * packets need to be loaded (through asf_get_packet())
825 */
826static int ff_asf_parse_packet(AVFormatContext *s, ByteIOContext *pb, AVPacket *pkt)
de6d9b64
FB		 827{
828 ASFContext *asf = s->priv_data;
2a10020b 829 ASFStream *asf_st = 0;
2a10020b 830 for (;;) {
ceba96cb 831 if(url_feof(pb))
799a0722 832 return AVERROR_EOF;
bb270c08
DB		 833 if (asf->packet_size_left < FRAME_HEADER_SIZE
834 || asf->packet_segments < 1) {
835 //asf->packet_size_left <= asf->packet_padsize) {
836 int ret = asf->packet_size_left + asf->packet_padsize;
949b1a13 837 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
5b11e081 838 assert(ret>=0);
bb270c08
DB		 839 /* fail safe */
840 url_fskip(pb, ret);
b04d5d31 841
022f0b7c 842 asf->packet_pos= url_ftell(pb);
b6eaae39
KED		 843 if (asf->data_object_size != (uint64_t)-1 &&
844 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
1d0036b0 845 return AVERROR_EOF; /* Do not exceed the size of the data object */
f27544fd 846 return 1;
bb270c08
DB		 847 }
848 if (asf->packet_time_start == 0) {
b0d75d60 849 if(asf_read_frame_header(s, pb) < 0){
ae60a857 850 asf->packet_segments= 0;
236116cb 851 continue;
1305a9d5 852 }
bb270c08 853 if (asf->stream_index < 0
f3356e9c
MN		 854 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
855 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
856 ) {
1359c2d4 857 asf->packet_time_start = 0;
bb270c08
DB		 858 /* unhandled packet (should not happen) */
859 url_fskip(pb, asf->packet_frag_size);
860 asf->packet_size_left -= asf->packet_frag_size;
b9866ebc 861 if(asf->stream_index < 0)
ae60a857 862 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
1359c2d4 863 continue;
bb270c08
DB		 864 }
865 asf->asf_st = s->streams[asf->stream_index]->priv_data;
866 }
867 asf_st = asf->asf_st;
868
bb270c08 869 if (asf->packet_replic_size == 1) {
efc90ebf 870 // frag_offset is here used as the beginning timestamp
bb270c08
DB		 871 asf->packet_frag_timestamp = asf->packet_time_start;
872 asf->packet_time_start += asf->packet_time_delta;
873 asf->packet_obj_size = asf->packet_frag_size = get_byte(pb);
874 asf->packet_size_left--;
2141dc37 875 asf->packet_multi_size--;
bb270c08
DB		 876 if (asf->packet_multi_size < asf->packet_obj_size)
877 {
878 asf->packet_time_start = 0;
879 url_fskip(pb, asf->packet_multi_size);
880 asf->packet_size_left -= asf->packet_multi_size;
2141dc37 881 continue;
bb270c08
DB		 882 }
883 asf->packet_multi_size -= asf->packet_obj_size;
884 //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);
885 }
60ff1c44
MN		 886 if( /*asf->packet_frag_size == asf->packet_obj_size*/
887 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
888 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
889 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
890 asf_st->frag_offset, asf->packet_frag_size,
891 asf->packet_obj_size, asf_st->pkt.size);
892 asf->packet_obj_size= asf_st->pkt.size;
893 }
894
f8f0a0bd
MN		 895 if ( asf_st->pkt.size != asf->packet_obj_size
896 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
200026aa
MN		 897 if(asf_st->pkt.data){
898 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
899 asf_st->frag_offset = 0;
900 av_free_packet(&asf_st->pkt);
901 }
bb270c08
DB		 902 /* new packet */
903 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
904 asf_st->seq = asf->packet_seq;
eb63b051 905 asf_st->pkt.dts = asf->packet_frag_timestamp;
bb270c08 906 asf_st->pkt.stream_index = asf->stream_index;
115329f1
DB		 907 asf_st->pkt.pos =
908 asf_st->packet_pos= asf->packet_pos;
909//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
cc947f04 910//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & AV_PKT_FLAG_KEY,
72415b2a
SS		 911//s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO, asf->packet_obj_size);
912 if (s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
bb270c08
DB		 913 asf->packet_key_frame = 1;
914 if (asf->packet_key_frame)
cc947f04 915 asf_st->pkt.flags |= AV_PKT_FLAG_KEY;
bb270c08
DB		 916 }
917
918 /* read data */
919 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
91d19d47 920 // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
bb270c08
DB		 921 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
922 asf->packet_size_left -= asf->packet_frag_size;
923 if (asf->packet_size_left < 0)
2141dc37 924 continue;
4c71d727
MN		 925
926 if( asf->packet_frag_offset >= asf_st->pkt.size
927 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
928 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
929 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
930 continue;
931 }
932
bb270c08
DB		 933 get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
934 asf->packet_frag_size);
72be7db4
RD		 935 if (s->key && s->keylen == 20)
936 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
937 asf->packet_frag_size);
bb270c08
DB		 938 asf_st->frag_offset += asf->packet_frag_size;
939 /* test if whole packet is read */
940 if (asf_st->frag_offset == asf_st->pkt.size) {
da0b94f5
MN		 941 //workaround for macroshit radio DVR-MS files
942 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
943 && asf_st->pkt.size > 100){
944 int i;
945 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
946 if(i == asf_st->pkt.size){
947 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
948 asf_st->frag_offset = 0;
949 av_free_packet(&asf_st->pkt);
950 continue;
951 }
952 }
953
bb270c08
DB		 954 /* return packet */
955 if (asf_st->ds_span > 1) {
05219463 956 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
b43387d4 957 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 958 }else{
bb270c08 959 /* packet descrambling */
191e8ca7 960 uint8_t *newdata = av_malloc(asf_st->pkt.size);
bb270c08
DB		 961 if (newdata) {
962 int offset = 0;
963 while (offset < asf_st->pkt.size) {
964 int off = offset / asf_st->ds_chunk_size;
965 int row = off / asf_st->ds_span;
966 int col = off % asf_st->ds_span;
967 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
968 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
05219463
MN		 969
970 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
971 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
bb270c08
DB		 972 memcpy(newdata + offset,
973 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
974 asf_st->ds_chunk_size);
975 offset += asf_st->ds_chunk_size;
976 }
977 av_free(asf_st->pkt.data);
978 asf_st->pkt.data = newdata;
979 }
05219463 980 }
bb270c08
DB		 981 }
982 asf_st->frag_offset = 0;
b83e83b9 983 *pkt= asf_st->pkt;
bb270c08
DB		 984 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
985 asf_st->pkt.size = 0;
986 asf_st->pkt.data = 0;
987 break; // packet completed
988 }
de6d9b64 989 }
de6d9b64
FB		 990 return 0;
991}
992
f27544fd
RB		 993static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
994{
995 ASFContext *asf = s->priv_data;
996
997 for (;;) {
998 int ret;
999
1000 /* parse cached packets, if any */
1d217cdb 1001 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
f27544fd 1002 return ret;
1d217cdb 1003 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
f27544fd
RB		 1004 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
1005 asf->packet_time_start = 0;
1006 }
1007
1008 return 0;
1009}
1010
38376f00
KK		 1011// Added to support seeking after packets have been read
1012// If information is not reset, read_packet fails due to
1013// leftover information from previous reads
1014static void asf_reset_header(AVFormatContext *s)
1015{
1016 ASFContext *asf = s->priv_data;
82b9e4a2
MN		 1017 ASFStream *asf_st;
1018 int i;
38376f00
KK		 1019
1020 asf->packet_nb_frames = 0;
38376f00
KK		 1021 asf->packet_size_left = 0;
1022 asf->packet_segments = 0;
1023 asf->packet_flags = 0;
1024 asf->packet_property = 0;
1025 asf->packet_timestamp = 0;
1026 asf->packet_segsizetype = 0;
1027 asf->packet_segments = 0;
1028 asf->packet_seq = 0;
1029 asf->packet_replic_size = 0;
1030 asf->packet_key_frame = 0;
1031 asf->packet_padsize = 0;
1032 asf->packet_frag_offset = 0;
1033 asf->packet_frag_size = 0;
1034 asf->packet_frag_timestamp = 0;
1035 asf->packet_multi_size = 0;
1036 asf->packet_obj_size = 0;
1037 asf->packet_time_delta = 0;
1038 asf->packet_time_start = 0;
115329f1 1039
82b9e4a2
MN		 1040 for(i=0; i<s->nb_streams; i++){
1041 asf_st= s->streams[i]->priv_data;
1042 av_free_packet(&asf_st->pkt);
1043 asf_st->frag_offset=0;
1044 asf_st->seq=0;
1045 }
1046 asf->asf_st= NULL;
38376f00
KK		 1047}
1048
5d25d2a9
DB		 1049static int asf_read_close(AVFormatContext *s)
1050{
1051 int i;
1052
1053 asf_reset_header(s);
1054 for(i=0;i<s->nb_streams;i++) {
1055 AVStream *st = s->streams[i];
5d25d2a9
DB		 1056 av_free(st->codec->palctrl);
1057 }
1058 return 0;
1059}
1060
8d14a25c 1061static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
38376f00 1062{
38376f00 1063 AVPacket pkt1, *pkt = &pkt1;
82b9e4a2 1064 ASFStream *asf_st;
580fb5e7 1065 int64_t pts;
82b9e4a2 1066 int64_t pos= *ppos;
3e9245a9 1067 int i;
30cdfb49 1068 int64_t start_pos[ASF_MAX_STREAMS];
115329f1 1069
3e9245a9
MN		 1070 for(i=0; i<s->nb_streams; i++){
1071 start_pos[i]= pos;
1072 }
115329f1 1073
68a10b40 1074 if (s->packet_size > 0)
b098b309 1075 pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
8d14a25c 1076 *ppos= pos;
899681cd 1077 url_fseek(s->pb, pos, SEEK_SET);
115329f1 1078
82b9e4a2 1079//printf("asf_read_pts\n");
82b9e4a2 1080 asf_reset_header(s);
3e9245a9 1081 for(;;){
82b9e4a2 1082 if (av_read_frame(s, pkt) < 0){
0b93103a 1083 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
bb270c08 1084 return AV_NOPTS_VALUE;
82b9e4a2 1085 }
115329f1 1086
38cf2a72 1087 pts= pkt->pts;
580fb5e7
MN		 1088
1089 av_free_packet(pkt);
cc947f04 1090 if(pkt->flags&AV_PKT_FLAG_KEY){
3e9245a9
MN		 1091 i= pkt->stream_index;
1092
1093 asf_st= s->streams[i]->priv_data;
1094
91d19d47 1095// assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
8d14a25c 1096 pos= asf_st->packet_pos;
09646bab 1097
52e54612 1098 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
8d14a25c 1099 start_pos[i]= asf_st->packet_pos + 1;
115329f1 1100
3e9245a9
MN		 1101 if(pkt->stream_index == stream_index)
1102 break;
1103 }
1104 }
1105
1106 *ppos= pos;
949b1a13 1107//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
580fb5e7
MN		 1108
1109 return pts;
38376f00
KK		 1110}
1111
56c96a22
MN		 1112static void asf_build_simple_index(AVFormatContext *s, int stream_index)
1113{
b8b00d94 1114 ff_asf_guid g;
56c96a22 1115 ASFContext *asf = s->priv_data;
d728e3cd 1116 int64_t current_pos= url_ftell(s->pb);
56c96a22 1117 int i;
56c96a22 1118
899681cd
BA		 1119 url_fseek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
1120 get_guid(s->pb, &g);
4d0c3dc0 1121 if (!guidcmp(&g, &index_guid)) {
134271c2 1122 int64_t itime, last_pos=-1;
d728e3cd 1123 int pct, ict;
dc1ed614 1124 int64_t av_unused gsize= get_le64(s->pb);
899681cd
BA		 1125 get_guid(s->pb, &g);
1126 itime=get_le64(s->pb);
1127 pct=get_le32(s->pb);
1128 ict=get_le32(s->pb);
871e62e5 1129 av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
56c96a22
MN		 1130
1131 for (i=0;i<ict;i++){
899681cd
BA		 1132 int pktnum=get_le32(s->pb);
1133 int pktct =get_le16(s->pb);
91d19d47 1134 int64_t pos = s->data_offset + s->packet_size*(int64_t)pktnum;
d728e3cd 1135 int64_t index_pts= av_rescale(itime, i, 10000);
56c96a22 1136
134271c2 1137 if(pos != last_pos){
d728e3cd 1138 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct);
91d19d47 1139 av_add_index_entry(s->streams[stream_index], pos, index_pts, s->packet_size, 0, AVINDEX_KEYFRAME);
134271c2
MN		 1140 last_pos=pos;
1141 }
56c96a22 1142 }
52e54612 1143 asf->index_read= 1;
56c96a22 1144 }
899681cd 1145 url_fseek(s->pb, current_pos, SEEK_SET);
56c96a22
MN		 1146}
1147
3ba1438d 1148static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
2a10020b 1149{
afda223c 1150 ASFContext *asf = s->priv_data;
56c96a22
MN		 1151 AVStream *st = s->streams[stream_index];
1152 int64_t pos;
1153 int index;
115329f1 1154
91d19d47 1155 if (s->packet_size <= 0)
38376f00
KK		 1156 return -1;
1157
fa13095a 1158 /* Try using the protocol's read_seek if available */
fd2982a0 1159 if(s->pb) {
fa13095a
BA		 1160 int ret = av_url_read_fseek(s->pb, stream_index, pts, flags);
1161 if(ret >= 0)
1162 asf_reset_header(s);
fd2982a0 1163 if (ret != AVERROR(ENOSYS))
cd31f8dc 1164 return ret;
fa13095a
BA		 1165 }
1166
52e54612 1167 if (!asf->index_read)
56c96a22
MN		 1168 asf_build_simple_index(s, stream_index);
1169
52e54612 1170 if(!(asf->index_read && st->index_entries)){
56c96a22
MN		 1171 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
1172 return -1;
1173 }else{
1174 index= av_index_search_timestamp(st, pts, flags);
1175 if(index<0)
1176 return -1;
1177
1178 /* find the position */
1179 pos = st->index_entries[index].pos;
56c96a22
MN		 1180
1181 // various attempts to find key frame have failed so far
1182 // asf_reset_header(s);
899681cd 1183 // url_fseek(s->pb, pos, SEEK_SET);
56c96a22
MN		 1184 // key_pos = pos;
1185 // for(i=0;i<16;i++){
899681cd 1186 // pos = url_ftell(s->pb);
56c96a22
MN		 1187 // if (av_read_frame(s, &pkt) < 0){
1188 // av_log(s, AV_LOG_INFO, "seek failed\n");
1189 // return -1;
1190 // }
1191 // asf_st = s->streams[stream_index]->priv_data;
1192 // pos += st->parser->frame_offset;
1193 //
1194 // if (pkt.size > b) {
1195 // b = pkt.size;
1196 // key_pos = pos;
1197 // }
1198 //
1199 // av_free_packet(&pkt);
1200 // }
1201
1202 /* do the seek */
871e62e5 1203 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
899681cd 1204 url_fseek(s->pb, pos, SEEK_SET);
56c96a22 1205 }
38376f00
KK		 1206 asf_reset_header(s);
1207 return 0;
2a10020b
ZK		 1208}
1209
ff70e601 1210AVInputFormat asf_demuxer = {
c9a65ca8 1211 "asf",
bde15e74 1212 NULL_IF_CONFIG_SMALL("ASF format"),
c9a65ca8
FB		 1213 sizeof(ASFContext),
1214 asf_probe,
1215 asf_read_header,
1216 asf_read_packet,
1217 asf_read_close,
2a10020b 1218 asf_read_seek,
8d14a25c 1219 asf_read_pts,
719e721a 1220 .metadata_conv = ff_asf_metadata_conv,
c9a65ca8 1221};
Libav master