Add fields to H264Context and SPS for upcoming VA API support.
[libav.git] / libavformat / asf.c
CommitLineData
de6d9b64 1/*
7fbde343 2 * ASF compatible demuxer
406792e7 3 * Copyright (c) 2000, 2001 Fabrice Bellard
de6d9b64 4 *
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5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
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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
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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 */
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21
22#include "libavutil/common.h"
23#include "libavcodec/mpegaudio.h"
de6d9b64 24#include "avformat.h"
9d9f4119 25#include "riff.h"
542993b0 26#include "asf.h"
72be7db4 27#include "asfcrypt.h"
de6d9b64 28
9686df2b 29void ff_mms_set_stream_selection(URLContext *h, AVFormatContext *format);
49ce700a 30
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31#undef NDEBUG
32#include <assert.h>
33
615b92fd 34#define FRAME_HEADER_SIZE 17
115329f1 35// Fix Me! FRAME_HEADER_SIZE may be different.
615b92fd 36
de6d9b64 37static const GUID index_guid = {
24c14d6d 38 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
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FB
39};
40
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RM
41static const GUID stream_bitrate_guid = { /* (http://get.to/sdp) */
42 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
43};
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44/**********************************/
45/* decoding */
46
47//#define DEBUG
48
49#ifdef DEBUG
5082f759
FR
50#define PRINT_IF_GUID(g,cmp) \
51if (!memcmp(g, &cmp, sizeof(GUID))) \
f94981ea 52 dprintf(NULL, "(GUID: %s) ", #cmp)
5082f759 53
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54static void print_guid(const GUID *g)
55{
56 int i;
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57 PRINT_IF_GUID(g, asf_header);
58 else PRINT_IF_GUID(g, file_header);
59 else PRINT_IF_GUID(g, stream_header);
60 else PRINT_IF_GUID(g, audio_stream);
61 else PRINT_IF_GUID(g, audio_conceal_none);
62 else PRINT_IF_GUID(g, video_stream);
63 else PRINT_IF_GUID(g, video_conceal_none);
ae38261e 64 else PRINT_IF_GUID(g, command_stream);
5082f759
FR
65 else PRINT_IF_GUID(g, comment_header);
66 else PRINT_IF_GUID(g, codec_comment_header);
67 else PRINT_IF_GUID(g, codec_comment1_header);
68 else PRINT_IF_GUID(g, data_header);
69 else PRINT_IF_GUID(g, index_guid);
70 else PRINT_IF_GUID(g, head1_guid);
71 else PRINT_IF_GUID(g, head2_guid);
72 else PRINT_IF_GUID(g, my_guid);
88141c91
MN
73 else PRINT_IF_GUID(g, ext_stream_header);
74 else PRINT_IF_GUID(g, extended_content_header);
75 else PRINT_IF_GUID(g, ext_stream_embed_stream_header);
76 else PRINT_IF_GUID(g, ext_stream_audio_stream);
30e88789 77 else PRINT_IF_GUID(g, metadata_header);
0e3b6a6f 78 else PRINT_IF_GUID(g, stream_bitrate_guid);
5082f759 79 else
f94981ea 80 dprintf(NULL, "(GUID: unknown) ");
24c14d6d 81 for(i=0;i<16;i++)
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MR
82 dprintf(NULL, " 0x%02x,", (*g)[i]);
83 dprintf(NULL, "}\n");
de6d9b64 84}
6df84c3a 85#undef PRINT_IF_GUID
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86#else
87#define print_guid(g)
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88#endif
89
90static void get_guid(ByteIOContext *s, GUID *g)
91{
24c14d6d 92 assert(sizeof(*g) == 16);
3dc761a4 93 get_buffer(s, *g, sizeof(*g));
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94}
95
96#if 0
97static void get_str16(ByteIOContext *pb, char *buf, int buf_size)
98{
99 int len, c;
100 char *q;
101
102 len = get_le16(pb);
103 q = buf;
104 while (len > 0) {
105 c = get_le16(pb);
106 if ((q - buf) < buf_size - 1)
107 *q++ = c;
108 len--;
109 }
110 *q = '\0';
111}
112#endif
113
114static void get_str16_nolen(ByteIOContext *pb, int len, char *buf, int buf_size)
115{
db5c43b4
ZM
116 char* q = buf;
117 len /= 2;
118 while (len--) {
119 uint8_t tmp;
120 PUT_UTF8(get_le16(pb), tmp, if (q - buf < buf_size - 1) *q++ = tmp;)
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FB
121 }
122 *q = '\0';
123}
124
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125static int asf_probe(AVProbeData *pd)
126{
c9a65ca8 127 /* check file header */
24c14d6d 128 if (!memcmp(pd->buf, &asf_header, sizeof(GUID)))
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129 return AVPROBE_SCORE_MAX;
130 else
131 return 0;
132}
133
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134static int get_value(ByteIOContext *pb, int type){
135 switch(type){
136 case 2: return get_le32(pb);
137 case 3: return get_le32(pb);
138 case 4: return get_le64(pb);
139 case 5: return get_le16(pb);
140 default:return INT_MIN;
141 }
142}
143
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144static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
145{
c9a65ca8 146 ASFContext *asf = s->priv_data;
de6d9b64 147 GUID g;
899681cd 148 ByteIOContext *pb = s->pb;
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FB
149 AVStream *st;
150 ASFStream *asf_st;
e095026a 151 int size, i;
0c1a9eda 152 int64_t gsize;
30e88789 153 AVRational dar[128];
d8470737 154 uint32_t bitrate[128];
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MN
155
156 memset(dar, 0, sizeof(dar));
d8470737 157 memset(bitrate, 0, sizeof(bitrate));
de6d9b64 158
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FB
159 get_guid(pb, &g);
160 if (memcmp(&g, &asf_header, sizeof(GUID)))
ccafd472 161 return -1;
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162 get_le64(pb);
163 get_le32(pb);
164 get_byte(pb);
165 get_byte(pb);
2141dc37 166 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
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167 for(;;) {
168 get_guid(pb, &g);
169 gsize = get_le64(pb);
f94981ea 170 dprintf(s, "%08"PRIx64": ", url_ftell(pb) - 24);
de6d9b64 171 print_guid(&g);
f94981ea 172 dprintf(s, " size=0x%"PRIx64"\n", gsize);
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MN
173 if (!memcmp(&g, &data_header, sizeof(GUID))) {
174 asf->data_object_offset = url_ftell(pb);
175 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
176 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
177 asf->data_object_size = gsize - 24;
178 } else {
179 asf->data_object_size = (uint64_t)-1;
180 }
181 break;
182 }
de6d9b64 183 if (gsize < 24)
ccafd472 184 return -1;
de6d9b64 185 if (!memcmp(&g, &file_header, sizeof(GUID))) {
2a10020b 186 get_guid(pb, &asf->hdr.guid);
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DB
187 asf->hdr.file_size = get_le64(pb);
188 asf->hdr.create_time = get_le64(pb);
6bb2a2df 189 asf->nb_packets = get_le64(pb);
bb270c08 190 asf->hdr.play_time = get_le64(pb);
b4bbcd63 191 asf->hdr.send_time = get_le64(pb);
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DB
192 asf->hdr.preroll = get_le32(pb);
193 asf->hdr.ignore = get_le32(pb);
194 asf->hdr.flags = get_le32(pb);
195 asf->hdr.min_pktsize = get_le32(pb);
196 asf->hdr.max_pktsize = get_le32(pb);
197 asf->hdr.max_bitrate = get_le32(pb);
198 asf->packet_size = asf->hdr.max_pktsize;
de6d9b64 199 } else if (!memcmp(&g, &stream_header, sizeof(GUID))) {
fb65d2ca
DP
200 enum CodecType type;
201 int type_specific_size, sizeX;
7ad5455c 202 uint64_t total_size;
de6d9b64 203 unsigned int tag1;
371bf806 204 int64_t pos1, pos2, start_time;
6fea687e 205 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
2a10020b 206
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207 pos1 = url_ftell(pb);
208
247eadca 209 st = av_new_stream(s, 0);
de6d9b64 210 if (!st)
ccafd472 211 return AVERROR(ENOMEM);
9ee91c2f 212 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
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213 asf_st = av_mallocz(sizeof(ASFStream));
214 if (!asf_st)
ccafd472 215 return AVERROR(ENOMEM);
de6d9b64 216 st->priv_data = asf_st;
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MN
217 start_time = asf->hdr.preroll;
218
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RM
219 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
220 st->duration = asf->hdr.send_time /
371bf806 221 (10000000 / 1000) - start_time;
73fe1052 222 }
de6d9b64 223 get_guid(pb, &g);
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MN
224
225 test_for_ext_stream_audio = 0;
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FB
226 if (!memcmp(&g, &audio_stream, sizeof(GUID))) {
227 type = CODEC_TYPE_AUDIO;
228 } else if (!memcmp(&g, &video_stream, sizeof(GUID))) {
229 type = CODEC_TYPE_VIDEO;
ae38261e 230 } else if (!memcmp(&g, &command_stream, sizeof(GUID))) {
3e86dba2 231 type = CODEC_TYPE_DATA;
88141c91
MN
232 } else if (!memcmp(&g, &ext_stream_embed_stream_header, sizeof(GUID))) {
233 test_for_ext_stream_audio = 1;
234 type = CODEC_TYPE_UNKNOWN;
de6d9b64 235 } else {
ccafd472 236 return -1;
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FB
237 }
238 get_guid(pb, &g);
239 total_size = get_le64(pb);
2e7973bb 240 type_specific_size = get_le32(pb);
de6d9b64 241 get_le32(pb);
bb270c08 242 st->id = get_le16(pb) & 0x7f; /* stream id */
2a10020b 243 // mapping of asf ID to AV stream ID;
247eadca 244 asf->asfid2avid[st->id] = s->nb_streams - 1;
2a10020b 245
de6d9b64 246 get_le32(pb);
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MN
247
248 if (test_for_ext_stream_audio) {
249 get_guid(pb, &g);
250 if (!memcmp(&g, &ext_stream_audio_stream, sizeof(GUID))) {
251 type = CODEC_TYPE_AUDIO;
6fea687e 252 is_dvr_ms_audio=1;
88141c91
MN
253 get_guid(pb, &g);
254 get_le32(pb);
255 get_le32(pb);
256 get_le32(pb);
257 get_guid(pb, &g);
258 get_le32(pb);
259 }
260 }
261
bb270c08 262 st->codec->codec_type = type;
de6d9b64 263 if (type == CODEC_TYPE_AUDIO) {
01f4895c 264 get_wav_header(pb, st->codec, type_specific_size);
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JD
265 if (is_dvr_ms_audio) {
266 // codec_id and codec_tag are unreliable in dvr_ms
267 // files. Set them later by probing stream.
0bef08e5 268 st->codec->codec_id = CODEC_ID_PROBE;
6fea687e
JD
269 st->codec->codec_tag = 0;
270 }
57004ff1 271 st->need_parsing = AVSTREAM_PARSE_FULL;
bb270c08
DB
272 /* We have to init the frame size at some point .... */
273 pos2 = url_ftell(pb);
b9c6d01b 274 if (gsize >= (pos2 + 8 - pos1 + 24)) {
bb270c08
DB
275 asf_st->ds_span = get_byte(pb);
276 asf_st->ds_packet_size = get_le16(pb);
277 asf_st->ds_chunk_size = get_le16(pb);
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MN
278 get_le16(pb); //ds_data_size
279 get_byte(pb); //ds_silence_data
bb270c08
DB
280 }
281 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
282 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
283 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
284 if (asf_st->ds_span > 1) {
285 if (!asf_st->ds_chunk_size
05219463
MN
286 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
287 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
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DB
288 asf_st->ds_span = 0; // disable descrambling
289 }
01f4895c 290 switch (st->codec->codec_id) {
80783dc2 291 case CODEC_ID_MP3:
01f4895c 292 st->codec->frame_size = MPA_FRAME_SIZE;
f80c1ac0
PG
293 break;
294 case CODEC_ID_PCM_S16LE:
295 case CODEC_ID_PCM_S16BE:
296 case CODEC_ID_PCM_U16LE:
297 case CODEC_ID_PCM_U16BE:
298 case CODEC_ID_PCM_S8:
299 case CODEC_ID_PCM_U8:
300 case CODEC_ID_PCM_ALAW:
301 case CODEC_ID_PCM_MULAW:
01f4895c 302 st->codec->frame_size = 1;
f80c1ac0
PG
303 break;
304 default:
305 /* This is probably wrong, but it prevents a crash later */
01f4895c 306 st->codec->frame_size = 1;
f80c1ac0
PG
307 break;
308 }
88141c91 309 } else if (type == CODEC_TYPE_VIDEO) {
bb270c08 310 get_le32(pb);
de6d9b64
FB
311 get_le32(pb);
312 get_byte(pb);
313 size = get_le16(pb); /* size */
0ffd77b9 314 sizeX= get_le32(pb); /* size */
01f4895c 315 st->codec->width = get_le32(pb);
bb270c08 316 st->codec->height = get_le32(pb);
2a10020b 317 /* not available for asf */
de6d9b64 318 get_le16(pb); /* panes */
dd1c8f3e 319 st->codec->bits_per_coded_sample = get_le16(pb); /* depth */
de6d9b64 320 tag1 = get_le32(pb);
bb270c08 321 url_fskip(pb, 20);
0ffd77b9
MN
322// av_log(NULL, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
323 size= sizeX;
bb270c08
DB
324 if (size > 40) {
325 st->codec->extradata_size = size - 40;
326 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
327 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
328 }
5e29abf8
RT
329
330 /* Extract palette from extradata if bpp <= 8 */
331 /* This code assumes that extradata contains only palette */
332 /* This is true for all paletted codecs implemented in ffmpeg */
dd1c8f3e 333 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
01f4895c 334 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
5e29abf8 335#ifdef WORDS_BIGENDIAN
01f4895c
MN
336 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
337 st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
5e29abf8 338#else
01f4895c
MN
339 memcpy(st->codec->palctrl->palette, st->codec->extradata,
340 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
5e29abf8 341#endif
01f4895c 342 st->codec->palctrl->palette_changed = 1;
5e29abf8
RT
343 }
344
01f4895c 345 st->codec->codec_tag = tag1;
bb270c08 346 st->codec->codec_id = codec_get_id(codec_bmp_tags, tag1);
afbb5ce4 347 if(tag1 == MKTAG('D', 'V', 'R', ' '))
57004ff1 348 st->need_parsing = AVSTREAM_PARSE_FULL;
de6d9b64
FB
349 }
350 pos2 = url_ftell(pb);
351 url_fskip(pb, gsize - (pos2 - pos1 + 24));
de6d9b64
FB
352 } else if (!memcmp(&g, &comment_header, sizeof(GUID))) {
353 int len1, len2, len3, len4, len5;
354
355 len1 = get_le16(pb);
356 len2 = get_le16(pb);
357 len3 = get_le16(pb);
358 len4 = get_le16(pb);
359 len5 = get_le16(pb);
4e15cc8b
MN
360 get_str16_nolen(pb, len1, s->title , sizeof(s->title));
361 get_str16_nolen(pb, len2, s->author , sizeof(s->author));
de6d9b64 362 get_str16_nolen(pb, len3, s->copyright, sizeof(s->copyright));
4e15cc8b 363 get_str16_nolen(pb, len4, s->comment , sizeof(s->comment));
bb270c08 364 url_fskip(pb, len5);
0e3b6a6f
RM
365 } else if (!memcmp(&g, &stream_bitrate_guid, sizeof(GUID))) {
366 int stream_count = get_le16(pb);
367 int j;
368
369// av_log(NULL, AV_LOG_ERROR, "stream bitrate properties\n");
370// av_log(NULL, AV_LOG_ERROR, "streams %d\n", streams);
371 for(j = 0; j < stream_count; j++) {
372 int flags, bitrate, stream_id;
373
374 flags= get_le16(pb);
375 bitrate= get_le32(pb);
376 stream_id= (flags & 0x7f);
377// av_log(NULL, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate);
a9054d91 378 asf->stream_bitrates[stream_id]= bitrate;
0e3b6a6f 379 }
d13431cd
KK
380 } else if (!memcmp(&g, &extended_content_header, sizeof(GUID))) {
381 int desc_count, i;
382
383 desc_count = get_le16(pb);
384 for(i=0;i<desc_count;i++)
385 {
052aa2ad
SH
386 int name_len,value_type,value_len;
387 uint64_t value_num = 0;
d045b8c1 388 char name[1024];
d13431cd
KK
389
390 name_len = get_le16(pb);
d045b8c1 391 get_str16_nolen(pb, name_len, name, sizeof(name));
d13431cd
KK
392 value_type = get_le16(pb);
393 value_len = get_le16(pb);
16428e63 394 if (value_type <= 1) // unicode or byte
d13431cd 395 {
5e2a4855
MN
396 if (!strcmp(name,"WM/AlbumTitle")) get_str16_nolen(pb, value_len, s->album, sizeof(s->album));
397 else if(!strcmp(name,"WM/Genre" )) get_str16_nolen(pb, value_len, s->genre, sizeof(s->genre));
0d4e281c
PB
398 else if(!strcmp(name,"WM/Year" )) {
399 char year[8];
400 get_str16_nolen(pb, value_len, year, sizeof(year));
401 s->year = atoi(year);
402 }
6ec14b33 403 else if(!strcmp(name,"WM/Track") && s->track == 0) {
629272d8
PB
404 char track[8];
405 get_str16_nolen(pb, value_len, track, sizeof(track));
406 s->track = strtol(track, NULL, 10) + 1;
407 }
408 else if(!strcmp(name,"WM/TrackNumber")) {
409 char track[8];
410 get_str16_nolen(pb, value_len, track, sizeof(track));
411 s->track = strtol(track, NULL, 10);
412 }
5e2a4855 413 else url_fskip(pb, value_len);
d13431cd 414 }
16428e63 415 else if (value_type <= 5) // boolean or DWORD or QWORD or WORD
d13431cd 416 {
30e88789 417 value_num= get_value(pb, value_type);
6ec14b33 418 if (!strcmp(name,"WM/Track" ) && s->track == 0) s->track = value_num + 1;
4e15cc8b 419 if (!strcmp(name,"WM/TrackNumber")) s->track = value_num;
11c55efa
MN
420 }else
421 url_fskip(pb, value_len);
d13431cd 422 }
30e88789
MN
423 } else if (!memcmp(&g, &metadata_header, sizeof(GUID))) {
424 int n, stream_num, name_len, value_len, value_type, value_num;
425 n = get_le16(pb);
426
427 for(i=0;i<n;i++) {
428 char name[1024];
429
430 get_le16(pb); //lang_list_index
431 stream_num= get_le16(pb);
432 name_len= get_le16(pb);
433 value_type= get_le16(pb);
434 value_len= get_le32(pb);
435
436 get_str16_nolen(pb, name_len, name, sizeof(name));
437//av_log(NULL, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
755bfeab 438 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
439 url_fskip(pb, value_len - 2);
440
441 if(stream_num<128){
442 if (!strcmp(name, "AspectRatioX")) dar[stream_num].num= value_num;
443 else if(!strcmp(name, "AspectRatioY")) dar[stream_num].den= value_num;
444 }
445 }
88141c91
MN
446 } else if (!memcmp(&g, &ext_stream_header, sizeof(GUID))) {
447 int ext_len, payload_ext_ct, stream_ct;
d8470737 448 uint32_t ext_d, leak_rate, stream_num;
1bd86246 449 int64_t pos_ex_st;
88141c91
MN
450 pos_ex_st = url_ftell(pb);
451
de3ae959
MN
452 get_le64(pb); // starttime
453 get_le64(pb); // endtime
d8470737 454 leak_rate = get_le32(pb); // leak-datarate
de3ae959
MN
455 get_le32(pb); // bucket-datasize
456 get_le32(pb); // init-bucket-fullness
457 get_le32(pb); // alt-leak-datarate
458 get_le32(pb); // alt-bucket-datasize
459 get_le32(pb); // alt-init-bucket-fullness
460 get_le32(pb); // max-object-size
461 get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
d8470737 462 stream_num = get_le16(pb); // stream-num
de3ae959
MN
463 get_le16(pb); // stream-language-id-index
464 get_le64(pb); // avg frametime in 100ns units
465 stream_ct = get_le16(pb); //stream-name-count
466 payload_ext_ct = get_le16(pb); //payload-extension-system-count
88141c91 467
d8470737
ZM
468 if (stream_num < 128)
469 bitrate[stream_num] = leak_rate;
470
88141c91
MN
471 for (i=0; i<stream_ct; i++){
472 get_le16(pb);
473 ext_len = get_le16(pb);
474 url_fseek(pb, ext_len, SEEK_CUR);
475 }
476
477 for (i=0; i<payload_ext_ct; i++){
478 get_guid(pb, &g);
479 ext_d=get_le16(pb);
480 ext_len=get_le32(pb);
481 url_fseek(pb, ext_len, SEEK_CUR);
482 }
483
484 // there could be a optional stream properties object to follow
485 // if so the next iteration will pick it up
de6d9b64
FB
486 } else if (!memcmp(&g, &head1_guid, sizeof(GUID))) {
487 int v1, v2;
488 get_guid(pb, &g);
489 v1 = get_le32(pb);
490 v2 = get_le16(pb);
88141c91 491#if 0
de6d9b64
FB
492 } else if (!memcmp(&g, &codec_comment_header, sizeof(GUID))) {
493 int len, v1, n, num;
494 char str[256], *q;
495 char tag[16];
496
497 get_guid(pb, &g);
498 print_guid(&g);
2a10020b 499
de6d9b64
FB
500 n = get_le32(pb);
501 for(i=0;i<n;i++) {
502 num = get_le16(pb); /* stream number */
503 get_str16(pb, str, sizeof(str));
504 get_str16(pb, str, sizeof(str));
505 len = get_le16(pb);
506 q = tag;
507 while (len > 0) {
508 v1 = get_byte(pb);
509 if ((q - tag) < sizeof(tag) - 1)
510 *q++ = v1;
511 len--;
512 }
513 *q = '\0';
514 }
515#endif
516 } else if (url_feof(pb)) {
ccafd472 517 return -1;
de6d9b64
FB
518 } else {
519 url_fseek(pb, gsize - 24, SEEK_CUR);
520 }
521 }
522 get_guid(pb, &g);
523 get_le64(pb);
524 get_byte(pb);
525 get_byte(pb);
2141dc37 526 if (url_feof(pb))
ccafd472 527 return -1;
2141dc37 528 asf->data_offset = url_ftell(pb);
de6d9b64
FB
529 asf->packet_size_left = 0;
530
30e88789
MN
531
532 for(i=0; i<128; i++){
533 int stream_num= asf->asfid2avid[i];
d8470737 534 if(stream_num>=0){
59729451
AJ
535 AVStream *st = s->streams[stream_num];
536 if (!st->codec->bit_rate)
537 st->codec->bit_rate = bitrate[i];
d8470737 538 if (dar[i].num > 0 && dar[i].den > 0)
59729451
AJ
539 av_reduce(&st->sample_aspect_ratio.num,
540 &st->sample_aspect_ratio.den,
18d915dd 541 dar[i].num, dar[i].den, INT_MAX);
59729451 542//av_log(NULL, 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);
30e88789
MN
543 }
544 }
545
de6d9b64 546 return 0;
de6d9b64
FB
547}
548
2a10020b
ZK
549#define DO_2BITS(bits, var, defval) \
550 switch (bits & 3) \
551 { \
552 case 3: var = get_le32(pb); rsize += 4; break; \
553 case 2: var = get_le16(pb); rsize += 2; break; \
554 case 1: var = get_byte(pb); rsize++; break; \
555 default: var = defval; break; \
556 }
557
1d217cdb 558int ff_asf_get_packet(AVFormatContext *s, ByteIOContext *pb)
de6d9b64
FB
559{
560 ASFContext *asf = s->priv_data;
2a10020b 561 uint32_t packet_length, padsize;
0c0d17f3 562 int rsize = 8;
0fd9e6f3
MN
563 int c, d, e, off;
564
022f0b7c 565 off= (url_ftell(pb) - s->data_offset) % asf->packet_size + 3;
0fd9e6f3
MN
566
567 c=d=e=-1;
568 while(off-- > 0){
569 c=d; d=e;
570 e= get_byte(pb);
571 if(c == 0x82 && !d && !e)
572 break;
573 }
115329f1 574
1359c2d4 575 if (c != 0x82) {
5acdd6e6 576 if (!url_feof(pb))
bb270c08 577 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
2a10020b 578 }
0c0d17f3 579 if ((c & 0x8f) == 0x82) {
0fd9e6f3 580 if (d || e) {
5acdd6e6 581 if (!url_feof(pb))
bb270c08 582 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
f7835507 583 return -1;
bb270c08 584 }
0c0d17f3 585 c= get_byte(pb);
0fd9e6f3 586 d= get_byte(pb);
0c0d17f3
MN
587 rsize+=3;
588 }else{
589 url_fseek(pb, -1, SEEK_CUR); //FIXME
de6d9b64 590 }
2a10020b 591
0c0d17f3
MN
592 asf->packet_flags = c;
593 asf->packet_property = d;
2a10020b
ZK
594
595 DO_2BITS(asf->packet_flags >> 5, packet_length, asf->packet_size);
596 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
597 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
598
5b11e081
MN
599 //the following checks prevent overflows and infinite loops
600 if(packet_length >= (1U<<29)){
601 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb));
ceba96cb 602 return -1;
5b11e081 603 }
92216453 604 if(padsize >= packet_length){
5b11e081 605 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, url_ftell(pb));
ceba96cb 606 return -1;
5b11e081
MN
607 }
608
2a10020b 609 asf->packet_timestamp = get_le32(pb);
de6d9b64 610 get_le16(pb); /* duration */
2141dc37 611 // rsize has at least 11 bytes which have to be present
2a10020b
ZK
612
613 if (asf->packet_flags & 0x01) {
bb270c08 614 asf->packet_segsizetype = get_byte(pb); rsize++;
2a10020b
ZK
615 asf->packet_segments = asf->packet_segsizetype & 0x3f;
616 } else {
bb270c08 617 asf->packet_segments = 1;
2a10020b
ZK
618 asf->packet_segsizetype = 0x80;
619 }
620 asf->packet_size_left = packet_length - padsize - rsize;
acbe6cfa
ZK
621 if (packet_length < asf->hdr.min_pktsize)
622 padsize += asf->hdr.min_pktsize - packet_length;
2a10020b 623 asf->packet_padsize = padsize;
f94981ea 624 dprintf(s, "packet: size=%d padsize=%d left=%d\n", asf->packet_size, asf->packet_padsize, asf->packet_size_left);
de6d9b64
FB
625 return 0;
626}
627
ae60a857
MN
628/**
629 *
630 * @return <0 if error
631 */
d7fb5a18 632static int asf_read_frame_header(AVFormatContext *s, ByteIOContext *pb){
ae60a857 633 ASFContext *asf = s->priv_data;
ae60a857
MN
634 int rsize = 1;
635 int num = get_byte(pb);
559a55ad 636 int64_t ts0, ts1;
ae60a857
MN
637
638 asf->packet_segments--;
639 asf->packet_key_frame = num >> 7;
640 asf->stream_index = asf->asfid2avid[num & 0x7f];
641 // sequence should be ignored!
642 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
643 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
644 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
645//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);
646 if (asf->packet_replic_size >= 8) {
647 asf->packet_obj_size = get_le32(pb);
648 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
649 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
650 return -1;
651 }
652 asf->packet_frag_timestamp = get_le32(pb); // timestamp
559a55ad
MN
653 if(asf->packet_replic_size >= 8+38+4){
654// for(i=0; i<asf->packet_replic_size-8; i++)
655// av_log(s, AV_LOG_DEBUG, "%02X ",get_byte(pb));
656// av_log(s, AV_LOG_DEBUG, "\n");
657 url_fskip(pb, 10);
658 ts0= get_le64(pb);
659 ts1= get_le64(pb);
660 url_fskip(pb, 12);
661 get_le32(pb);
662 url_fskip(pb, asf->packet_replic_size - 8 - 38 - 4);
663 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
664 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
665 }else
666 url_fskip(pb, asf->packet_replic_size - 8);
ae60a857
MN
667 rsize += asf->packet_replic_size; // FIXME - check validity
668 } else if (asf->packet_replic_size==1){
efc90ebf 669 // multipacket - frag_offset is beginning timestamp
ae60a857
MN
670 asf->packet_time_start = asf->packet_frag_offset;
671 asf->packet_frag_offset = 0;
672 asf->packet_frag_timestamp = asf->packet_timestamp;
673
674 asf->packet_time_delta = get_byte(pb);
675 rsize++;
676 }else if(asf->packet_replic_size!=0){
677 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
678 return -1;
679 }
680 if (asf->packet_flags & 0x01) {
681 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
13f7e4b9
MN
682 if(asf->packet_frag_size > asf->packet_size_left - rsize){
683 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n");
684 return -1;
685 }
ae60a857
MN
686 //printf("Fragsize %d\n", asf->packet_frag_size);
687 } else {
688 asf->packet_frag_size = asf->packet_size_left - rsize;
689 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
690 }
691 if (asf->packet_replic_size == 1) {
692 asf->packet_multi_size = asf->packet_frag_size;
693 if (asf->packet_multi_size > asf->packet_size_left)
694 return -1;
695 }
696 asf->packet_size_left -= rsize;
697 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
698
699 return 0;
700}
701
1d217cdb 702int ff_asf_parse_packet(AVFormatContext *s, ByteIOContext *pb, AVPacket *pkt)
de6d9b64
FB
703{
704 ASFContext *asf = s->priv_data;
2a10020b 705 ASFStream *asf_st = 0;
2a10020b 706 for (;;) {
ceba96cb 707 if(url_feof(pb))
6f3e0b21 708 return AVERROR(EIO);
bb270c08
DB
709 if (asf->packet_size_left < FRAME_HEADER_SIZE
710 || asf->packet_segments < 1) {
711 //asf->packet_size_left <= asf->packet_padsize) {
712 int ret = asf->packet_size_left + asf->packet_padsize;
949b1a13 713 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
5b11e081 714 assert(ret>=0);
bb270c08
DB
715 /* fail safe */
716 url_fskip(pb, ret);
b04d5d31 717
022f0b7c 718 asf->packet_pos= url_ftell(pb);
b6eaae39
KED
719 if (asf->data_object_size != (uint64_t)-1 &&
720 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
6f3e0b21 721 return AVERROR(EIO); /* Do not exceed the size of the data object */
f27544fd 722 return 1;
bb270c08
DB
723 }
724 if (asf->packet_time_start == 0) {
b0d75d60 725 if(asf_read_frame_header(s, pb) < 0){
ae60a857 726 asf->packet_segments= 0;
236116cb 727 continue;
1305a9d5 728 }
bb270c08 729 if (asf->stream_index < 0
f3356e9c
MN
730 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
731 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
732 ) {
1359c2d4 733 asf->packet_time_start = 0;
bb270c08
DB
734 /* unhandled packet (should not happen) */
735 url_fskip(pb, asf->packet_frag_size);
736 asf->packet_size_left -= asf->packet_frag_size;
b9866ebc 737 if(asf->stream_index < 0)
ae60a857 738 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
1359c2d4 739 continue;
bb270c08
DB
740 }
741 asf->asf_st = s->streams[asf->stream_index]->priv_data;
742 }
743 asf_st = asf->asf_st;
744
bb270c08 745 if (asf->packet_replic_size == 1) {
efc90ebf 746 // frag_offset is here used as the beginning timestamp
bb270c08
DB
747 asf->packet_frag_timestamp = asf->packet_time_start;
748 asf->packet_time_start += asf->packet_time_delta;
749 asf->packet_obj_size = asf->packet_frag_size = get_byte(pb);
750 asf->packet_size_left--;
2141dc37 751 asf->packet_multi_size--;
bb270c08
DB
752 if (asf->packet_multi_size < asf->packet_obj_size)
753 {
754 asf->packet_time_start = 0;
755 url_fskip(pb, asf->packet_multi_size);
756 asf->packet_size_left -= asf->packet_multi_size;
2141dc37 757 continue;
bb270c08
DB
758 }
759 asf->packet_multi_size -= asf->packet_obj_size;
760 //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);
761 }
60ff1c44
MN
762 if( /*asf->packet_frag_size == asf->packet_obj_size*/
763 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
764 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
765 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
766 asf_st->frag_offset, asf->packet_frag_size,
767 asf->packet_obj_size, asf_st->pkt.size);
768 asf->packet_obj_size= asf_st->pkt.size;
769 }
770
f8f0a0bd
MN
771 if ( asf_st->pkt.size != asf->packet_obj_size
772 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
200026aa
MN
773 if(asf_st->pkt.data){
774 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
775 asf_st->frag_offset = 0;
776 av_free_packet(&asf_st->pkt);
777 }
bb270c08
DB
778 /* new packet */
779 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
780 asf_st->seq = asf->packet_seq;
eb63b051 781 asf_st->pkt.dts = asf->packet_frag_timestamp;
bb270c08 782 asf_st->pkt.stream_index = asf->stream_index;
115329f1
DB
783 asf_st->pkt.pos =
784 asf_st->packet_pos= asf->packet_pos;
785//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
82b9e4a2 786//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY,
01f4895c 787//s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size);
bb270c08
DB
788 if (s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO)
789 asf->packet_key_frame = 1;
790 if (asf->packet_key_frame)
791 asf_st->pkt.flags |= PKT_FLAG_KEY;
792 }
793
794 /* read data */
795 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
796 // asf->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
797 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
798 asf->packet_size_left -= asf->packet_frag_size;
799 if (asf->packet_size_left < 0)
2141dc37 800 continue;
4c71d727
MN
801
802 if( asf->packet_frag_offset >= asf_st->pkt.size
803 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
804 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
805 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
806 continue;
807 }
808
bb270c08
DB
809 get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
810 asf->packet_frag_size);
72be7db4
RD
811 if (s->key && s->keylen == 20)
812 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
813 asf->packet_frag_size);
bb270c08
DB
814 asf_st->frag_offset += asf->packet_frag_size;
815 /* test if whole packet is read */
816 if (asf_st->frag_offset == asf_st->pkt.size) {
da0b94f5
MN
817 //workaround for macroshit radio DVR-MS files
818 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
819 && asf_st->pkt.size > 100){
820 int i;
821 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
822 if(i == asf_st->pkt.size){
823 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
824 asf_st->frag_offset = 0;
825 av_free_packet(&asf_st->pkt);
826 continue;
827 }
828 }
829
bb270c08
DB
830 /* return packet */
831 if (asf_st->ds_span > 1) {
05219463 832 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
b43387d4 833 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 834 }else{
bb270c08 835 /* packet descrambling */
191e8ca7 836 uint8_t *newdata = av_malloc(asf_st->pkt.size);
bb270c08
DB
837 if (newdata) {
838 int offset = 0;
839 while (offset < asf_st->pkt.size) {
840 int off = offset / asf_st->ds_chunk_size;
841 int row = off / asf_st->ds_span;
842 int col = off % asf_st->ds_span;
843 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
844 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
05219463
MN
845
846 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
847 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
bb270c08
DB
848 memcpy(newdata + offset,
849 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
850 asf_st->ds_chunk_size);
851 offset += asf_st->ds_chunk_size;
852 }
853 av_free(asf_st->pkt.data);
854 asf_st->pkt.data = newdata;
855 }
05219463 856 }
bb270c08
DB
857 }
858 asf_st->frag_offset = 0;
b83e83b9 859 *pkt= asf_st->pkt;
bb270c08
DB
860 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
861 asf_st->pkt.size = 0;
862 asf_st->pkt.data = 0;
863 break; // packet completed
864 }
de6d9b64 865 }
de6d9b64
FB
866 return 0;
867}
868
f27544fd
RB
869static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
870{
871 ASFContext *asf = s->priv_data;
872
873 for (;;) {
874 int ret;
875
876 /* parse cached packets, if any */
1d217cdb 877 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
f27544fd 878 return ret;
1d217cdb 879 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
f27544fd
RB
880 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
881 asf->packet_time_start = 0;
882 }
883
884 return 0;
885}
886
38376f00
KK
887// Added to support seeking after packets have been read
888// If information is not reset, read_packet fails due to
889// leftover information from previous reads
890static void asf_reset_header(AVFormatContext *s)
891{
892 ASFContext *asf = s->priv_data;
82b9e4a2
MN
893 ASFStream *asf_st;
894 int i;
38376f00
KK
895
896 asf->packet_nb_frames = 0;
38376f00
KK
897 asf->packet_size_left = 0;
898 asf->packet_segments = 0;
899 asf->packet_flags = 0;
900 asf->packet_property = 0;
901 asf->packet_timestamp = 0;
902 asf->packet_segsizetype = 0;
903 asf->packet_segments = 0;
904 asf->packet_seq = 0;
905 asf->packet_replic_size = 0;
906 asf->packet_key_frame = 0;
907 asf->packet_padsize = 0;
908 asf->packet_frag_offset = 0;
909 asf->packet_frag_size = 0;
910 asf->packet_frag_timestamp = 0;
911 asf->packet_multi_size = 0;
912 asf->packet_obj_size = 0;
913 asf->packet_time_delta = 0;
914 asf->packet_time_start = 0;
115329f1 915
82b9e4a2
MN
916 for(i=0; i<s->nb_streams; i++){
917 asf_st= s->streams[i]->priv_data;
918 av_free_packet(&asf_st->pkt);
919 asf_st->frag_offset=0;
920 asf_st->seq=0;
921 }
922 asf->asf_st= NULL;
38376f00
KK
923}
924
5d25d2a9
DB
925static int asf_read_close(AVFormatContext *s)
926{
927 int i;
928
929 asf_reset_header(s);
930 for(i=0;i<s->nb_streams;i++) {
931 AVStream *st = s->streams[i];
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DB
932 av_free(st->codec->palctrl);
933 }
934 return 0;
935}
936
8d14a25c 937static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
38376f00
KK
938{
939 ASFContext *asf = s->priv_data;
940 AVPacket pkt1, *pkt = &pkt1;
82b9e4a2 941 ASFStream *asf_st;
580fb5e7 942 int64_t pts;
82b9e4a2 943 int64_t pos= *ppos;
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MN
944 int i;
945 int64_t start_pos[s->nb_streams];
115329f1 946
3e9245a9
MN
947 for(i=0; i<s->nb_streams; i++){
948 start_pos[i]= pos;
949 }
115329f1 950
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MN
951 pos= (pos+asf->packet_size-1-s->data_offset)/asf->packet_size*asf->packet_size+ s->data_offset;
952 *ppos= pos;
899681cd 953 url_fseek(s->pb, pos, SEEK_SET);
115329f1 954
82b9e4a2 955//printf("asf_read_pts\n");
82b9e4a2 956 asf_reset_header(s);
3e9245a9 957 for(;;){
82b9e4a2 958 if (av_read_frame(s, pkt) < 0){
0b93103a 959 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
bb270c08 960 return AV_NOPTS_VALUE;
82b9e4a2 961 }
115329f1 962
38cf2a72 963 pts= pkt->pts;
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MN
964
965 av_free_packet(pkt);
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MN
966 if(pkt->flags&PKT_FLAG_KEY){
967 i= pkt->stream_index;
968
969 asf_st= s->streams[i]->priv_data;
970
0fd9e6f3 971// assert((asf_st->packet_pos - s->data_offset) % asf->packet_size == 0);
8d14a25c 972 pos= asf_st->packet_pos;
09646bab 973
52e54612 974 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
8d14a25c 975 start_pos[i]= asf_st->packet_pos + 1;
115329f1 976
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MN
977 if(pkt->stream_index == stream_index)
978 break;
979 }
980 }
981
982 *ppos= pos;
949b1a13 983//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
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984
985 return pts;
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986}
987
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988static void asf_build_simple_index(AVFormatContext *s, int stream_index)
989{
990 GUID g;
991 ASFContext *asf = s->priv_data;
992 int64_t gsize, itime;
993 int64_t pos, current_pos, index_pts;
994 int i;
995 int pct,ict;
996
899681cd 997 current_pos = url_ftell(s->pb);
56c96a22 998
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BA
999 url_fseek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
1000 get_guid(s->pb, &g);
56c96a22 1001 if (!memcmp(&g, &index_guid, sizeof(GUID))) {
899681cd
BA
1002 gsize = get_le64(s->pb);
1003 get_guid(s->pb, &g);
1004 itime=get_le64(s->pb);
1005 pct=get_le32(s->pb);
1006 ict=get_le32(s->pb);
ccd3228e 1007 av_log(NULL, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
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MN
1008
1009 for (i=0;i<ict;i++){
899681cd
BA
1010 int pktnum=get_le32(s->pb);
1011 int pktct =get_le16(s->pb);
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MN
1012 av_log(NULL, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct);
1013
1014 pos=s->data_offset + asf->packet_size*(int64_t)pktnum;
1015 index_pts=av_rescale(itime, i, 10000);
1016
1017 av_add_index_entry(s->streams[stream_index], pos, index_pts, asf->packet_size, 0, AVINDEX_KEYFRAME);
1018 }
52e54612 1019 asf->index_read= 1;
56c96a22 1020 }
899681cd 1021 url_fseek(s->pb, current_pos, SEEK_SET);
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MN
1022}
1023
3ba1438d 1024static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
2a10020b 1025{
afda223c 1026 ASFContext *asf = s->priv_data;
56c96a22
MN
1027 AVStream *st = s->streams[stream_index];
1028 int64_t pos;
1029 int index;
115329f1 1030
a602556e 1031 if (asf->packet_size <= 0)
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KK
1032 return -1;
1033
fa13095a 1034 /* Try using the protocol's read_seek if available */
fd2982a0 1035 if(s->pb) {
fa13095a
BA
1036 int ret = av_url_read_fseek(s->pb, stream_index, pts, flags);
1037 if(ret >= 0)
1038 asf_reset_header(s);
fd2982a0 1039 if (ret != AVERROR(ENOSYS))
cd31f8dc 1040 return ret;
fa13095a
BA
1041 }
1042
52e54612 1043 if (!asf->index_read)
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MN
1044 asf_build_simple_index(s, stream_index);
1045
52e54612 1046 if(!(asf->index_read && st->index_entries)){
56c96a22
MN
1047 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
1048 return -1;
1049 }else{
1050 index= av_index_search_timestamp(st, pts, flags);
1051 if(index<0)
1052 return -1;
1053
1054 /* find the position */
1055 pos = st->index_entries[index].pos;
1056 pts = st->index_entries[index].timestamp;
1057
1058 // various attempts to find key frame have failed so far
1059 // asf_reset_header(s);
899681cd 1060 // url_fseek(s->pb, pos, SEEK_SET);
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MN
1061 // key_pos = pos;
1062 // for(i=0;i<16;i++){
899681cd 1063 // pos = url_ftell(s->pb);
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1064 // if (av_read_frame(s, &pkt) < 0){
1065 // av_log(s, AV_LOG_INFO, "seek failed\n");
1066 // return -1;
1067 // }
1068 // asf_st = s->streams[stream_index]->priv_data;
1069 // pos += st->parser->frame_offset;
1070 //
1071 // if (pkt.size > b) {
1072 // b = pkt.size;
1073 // key_pos = pos;
1074 // }
1075 //
1076 // av_free_packet(&pkt);
1077 // }
1078
1079 /* do the seek */
ccd3228e 1080 av_log(NULL, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
899681cd 1081 url_fseek(s->pb, pos, SEEK_SET);
56c96a22 1082 }
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KK
1083 asf_reset_header(s);
1084 return 0;
2a10020b
ZK
1085}
1086
ff70e601 1087AVInputFormat asf_demuxer = {
c9a65ca8 1088 "asf",
bde15e74 1089 NULL_IF_CONFIG_SMALL("ASF format"),
c9a65ca8
FB
1090 sizeof(ASFContext),
1091 asf_probe,
1092 asf_read_header,
1093 asf_read_packet,
1094 asf_read_close,
2a10020b 1095 asf_read_seek,
8d14a25c 1096 asf_read_pts,
c9a65ca8 1097};