workaround for broken files created by previous versions of asfenc.
[libav.git] / libavformat / asfdec.c
CommitLineData
de6d9b64 1/*
7fbde343 2 * ASF compatible demuxer
406792e7 3 * Copyright (c) 2000, 2001 Fabrice Bellard
de6d9b64 4 *
b78e7197
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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
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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 */
245976da 21
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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
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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
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43};
44
b8b00d94 45static const ff_asf_guid stream_bitrate_guid = { /* (http://get.to/sdp) */
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46 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
47};
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48/**********************************/
49/* decoding */
50
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51static int guidcmp(const void *g1, const void *g2)
52{
53 return memcmp(g1, g2, sizeof(ff_asf_guid));
54}
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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)
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62{
63 int i;
17af0525
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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);
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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++)
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MR
90 dprintf(NULL, " 0x%02x,", (*g)[i]);
91 dprintf(NULL, "}\n");
de6d9b64 92}
6df84c3a 93#undef PRINT_IF_GUID
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MR
94#else
95#define print_guid(g)
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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;
46b4019b 125 for (; len > 1; len -= 2) {
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126 uint8_t tmp;
127 PUT_UTF8(get_le16(pb), tmp, if (q - buf < buf_size - 1) *q++ = tmp;)
de6d9b64 128 }
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BC
129 if (len > 0)
130 url_fskip(pb, len);
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131 *q = '\0';
132}
133
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134static int asf_probe(AVProbeData *pd)
135{
c9a65ca8 136 /* check file header */
4d0c3dc0 137 if (!guidcmp(pd->buf, &ff_asf_header))
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138 return AVPROBE_SCORE_MAX;
139 else
140 return 0;
141}
142
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143static int get_value(ByteIOContext *pb, int type){
144 switch(type){
145 case 2: return get_le32(pb);
146 case 3: return get_le32(pb);
147 case 4: return get_le64(pb);
148 case 5: return get_le16(pb);
149 default:return INT_MIN;
150 }
151}
152
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153static void get_tag(AVFormatContext *s, const char *key, int type, int len)
154{
12ad6671
MN
155 char *value;
156
157 if ((unsigned)len >= UINT_MAX)
158 return;
159
160 value = av_malloc(len+1);
161 if (!value)
162 return;
163
20e2a7ae 164 if (type <= 1) { // unicode or byte
12ad6671 165 get_str16_nolen(s->pb, len, value, len);
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AJ
166 } else if (type <= 5) { // boolean or DWORD or QWORD or WORD
167 uint64_t num = get_value(s->pb, type);
12ad6671 168 snprintf(value, len, "%"PRIu64, num);
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AJ
169 } else {
170 url_fskip(s->pb, len);
171 return;
172 }
be039510 173 if (!strncmp(key, "WM/", 3))
20e2a7ae 174 key += 3;
12ad6671 175 av_metadata_set2(&s->metadata, key, value, AV_METADATA_DONT_STRDUP_VAL);
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AJ
176}
177
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178static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
179{
c9a65ca8 180 ASFContext *asf = s->priv_data;
b8b00d94 181 ff_asf_guid g;
899681cd 182 ByteIOContext *pb = s->pb;
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183 AVStream *st;
184 ASFStream *asf_st;
e095026a 185 int size, i;
0c1a9eda 186 int64_t gsize;
30e88789 187 AVRational dar[128];
d8470737 188 uint32_t bitrate[128];
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189
190 memset(dar, 0, sizeof(dar));
d8470737 191 memset(bitrate, 0, sizeof(bitrate));
de6d9b64 192
de6d9b64 193 get_guid(pb, &g);
4d0c3dc0 194 if (guidcmp(&g, &ff_asf_header))
ccafd472 195 return -1;
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196 get_le64(pb);
197 get_le32(pb);
198 get_byte(pb);
199 get_byte(pb);
2141dc37 200 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
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201 for(;;) {
202 get_guid(pb, &g);
203 gsize = get_le64(pb);
f94981ea 204 dprintf(s, "%08"PRIx64": ", url_ftell(pb) - 24);
de6d9b64 205 print_guid(&g);
f94981ea 206 dprintf(s, " size=0x%"PRIx64"\n", gsize);
4d0c3dc0 207 if (!guidcmp(&g, &ff_asf_data_header)) {
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MN
208 asf->data_object_offset = url_ftell(pb);
209 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
210 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
211 asf->data_object_size = gsize - 24;
212 } else {
213 asf->data_object_size = (uint64_t)-1;
214 }
215 break;
216 }
de6d9b64 217 if (gsize < 24)
ccafd472 218 return -1;
4d0c3dc0 219 if (!guidcmp(&g, &ff_asf_file_header)) {
2a10020b 220 get_guid(pb, &asf->hdr.guid);
bb270c08
DB
221 asf->hdr.file_size = get_le64(pb);
222 asf->hdr.create_time = get_le64(pb);
6bb2a2df 223 asf->nb_packets = get_le64(pb);
bb270c08 224 asf->hdr.play_time = get_le64(pb);
b4bbcd63 225 asf->hdr.send_time = get_le64(pb);
bb270c08
DB
226 asf->hdr.preroll = get_le32(pb);
227 asf->hdr.ignore = get_le32(pb);
228 asf->hdr.flags = get_le32(pb);
229 asf->hdr.min_pktsize = get_le32(pb);
230 asf->hdr.max_pktsize = get_le32(pb);
231 asf->hdr.max_bitrate = get_le32(pb);
91d19d47 232 s->packet_size = asf->hdr.max_pktsize;
4d0c3dc0 233 } else if (!guidcmp(&g, &ff_asf_stream_header)) {
fb65d2ca
DP
234 enum CodecType type;
235 int type_specific_size, sizeX;
7ad5455c 236 uint64_t total_size;
de6d9b64 237 unsigned int tag1;
371bf806 238 int64_t pos1, pos2, start_time;
6fea687e 239 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
2a10020b 240
de6d9b64
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241 pos1 = url_ftell(pb);
242
247eadca 243 st = av_new_stream(s, 0);
de6d9b64 244 if (!st)
ccafd472 245 return AVERROR(ENOMEM);
9ee91c2f 246 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
de6d9b64
FB
247 asf_st = av_mallocz(sizeof(ASFStream));
248 if (!asf_st)
ccafd472 249 return AVERROR(ENOMEM);
de6d9b64 250 st->priv_data = asf_st;
371bf806
MN
251 start_time = asf->hdr.preroll;
252
5f1ac36d
CC
253 asf_st->stream_language_index = 128; // invalid stream index means no language info
254
73fe1052 255 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
f2086fb5 256 st->duration = asf->hdr.play_time /
371bf806 257 (10000000 / 1000) - start_time;
73fe1052 258 }
de6d9b64 259 get_guid(pb, &g);
88141c91
MN
260
261 test_for_ext_stream_audio = 0;
4d0c3dc0 262 if (!guidcmp(&g, &ff_asf_audio_stream)) {
de6d9b64 263 type = CODEC_TYPE_AUDIO;
4d0c3dc0 264 } else if (!guidcmp(&g, &ff_asf_video_stream)) {
de6d9b64 265 type = CODEC_TYPE_VIDEO;
4d0c3dc0 266 } else if (!guidcmp(&g, &ff_asf_command_stream)) {
3e86dba2 267 type = CODEC_TYPE_DATA;
4d0c3dc0 268 } else if (!guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
88141c91
MN
269 test_for_ext_stream_audio = 1;
270 type = CODEC_TYPE_UNKNOWN;
de6d9b64 271 } else {
ccafd472 272 return -1;
de6d9b64
FB
273 }
274 get_guid(pb, &g);
275 total_size = get_le64(pb);
2e7973bb 276 type_specific_size = get_le32(pb);
de6d9b64 277 get_le32(pb);
bb270c08 278 st->id = get_le16(pb) & 0x7f; /* stream id */
2a10020b 279 // mapping of asf ID to AV stream ID;
247eadca 280 asf->asfid2avid[st->id] = s->nb_streams - 1;
2a10020b 281
de6d9b64 282 get_le32(pb);
88141c91
MN
283
284 if (test_for_ext_stream_audio) {
285 get_guid(pb, &g);
4d0c3dc0 286 if (!guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
88141c91 287 type = CODEC_TYPE_AUDIO;
6fea687e 288 is_dvr_ms_audio=1;
88141c91
MN
289 get_guid(pb, &g);
290 get_le32(pb);
291 get_le32(pb);
292 get_le32(pb);
293 get_guid(pb, &g);
294 get_le32(pb);
295 }
296 }
297
bb270c08 298 st->codec->codec_type = type;
de6d9b64 299 if (type == CODEC_TYPE_AUDIO) {
1a40491e 300 ff_get_wav_header(pb, st->codec, type_specific_size);
6fea687e
JD
301 if (is_dvr_ms_audio) {
302 // codec_id and codec_tag are unreliable in dvr_ms
303 // files. Set them later by probing stream.
0bef08e5 304 st->codec->codec_id = CODEC_ID_PROBE;
6fea687e
JD
305 st->codec->codec_tag = 0;
306 }
e7f73adb
AC
307 if (st->codec->codec_id == CODEC_ID_AAC) {
308 st->need_parsing = AVSTREAM_PARSE_NONE;
309 } else {
e9259f8d 310 st->need_parsing = AVSTREAM_PARSE_FULL;
e7f73adb 311 }
bb270c08
DB
312 /* We have to init the frame size at some point .... */
313 pos2 = url_ftell(pb);
b9c6d01b 314 if (gsize >= (pos2 + 8 - pos1 + 24)) {
bb270c08
DB
315 asf_st->ds_span = get_byte(pb);
316 asf_st->ds_packet_size = get_le16(pb);
317 asf_st->ds_chunk_size = get_le16(pb);
6bb2a2df
MN
318 get_le16(pb); //ds_data_size
319 get_byte(pb); //ds_silence_data
bb270c08
DB
320 }
321 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
322 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
323 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
324 if (asf_st->ds_span > 1) {
325 if (!asf_st->ds_chunk_size
05219463
MN
326 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
327 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
bb270c08
DB
328 asf_st->ds_span = 0; // disable descrambling
329 }
01f4895c 330 switch (st->codec->codec_id) {
80783dc2 331 case CODEC_ID_MP3:
01f4895c 332 st->codec->frame_size = MPA_FRAME_SIZE;
f80c1ac0
PG
333 break;
334 case CODEC_ID_PCM_S16LE:
335 case CODEC_ID_PCM_S16BE:
336 case CODEC_ID_PCM_U16LE:
337 case CODEC_ID_PCM_U16BE:
338 case CODEC_ID_PCM_S8:
339 case CODEC_ID_PCM_U8:
340 case CODEC_ID_PCM_ALAW:
341 case CODEC_ID_PCM_MULAW:
01f4895c 342 st->codec->frame_size = 1;
f80c1ac0
PG
343 break;
344 default:
345 /* This is probably wrong, but it prevents a crash later */
01f4895c 346 st->codec->frame_size = 1;
f80c1ac0
PG
347 break;
348 }
88141c91 349 } else if (type == CODEC_TYPE_VIDEO) {
bb270c08 350 get_le32(pb);
de6d9b64
FB
351 get_le32(pb);
352 get_byte(pb);
353 size = get_le16(pb); /* size */
0ffd77b9 354 sizeX= get_le32(pb); /* size */
01f4895c 355 st->codec->width = get_le32(pb);
bb270c08 356 st->codec->height = get_le32(pb);
2a10020b 357 /* not available for asf */
de6d9b64 358 get_le16(pb); /* panes */
dd1c8f3e 359 st->codec->bits_per_coded_sample = get_le16(pb); /* depth */
de6d9b64 360 tag1 = get_le32(pb);
bb270c08 361 url_fskip(pb, 20);
871e62e5 362// av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
0ffd77b9 363 size= sizeX;
bb270c08
DB
364 if (size > 40) {
365 st->codec->extradata_size = size - 40;
366 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
367 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
368 }
5e29abf8 369
6d050dd6 370 /* Extract palette from extradata if bpp <= 8 */
371 /* This code assumes that extradata contains only palette */
372 /* This is true for all paletted codecs implemented in ffmpeg */
373 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
374 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
63613fe6 375#if HAVE_BIGENDIAN
6d050dd6 376 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
377 st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
5e29abf8 378#else
6d050dd6 379 memcpy(st->codec->palctrl->palette, st->codec->extradata,
380 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
5e29abf8 381#endif
6d050dd6 382 st->codec->palctrl->palette_changed = 1;
383 }
5e29abf8 384
01f4895c 385 st->codec->codec_tag = tag1;
1a40491e 386 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
afbb5ce4 387 if(tag1 == MKTAG('D', 'V', 'R', ' '))
57004ff1 388 st->need_parsing = AVSTREAM_PARSE_FULL;
de6d9b64
FB
389 }
390 pos2 = url_ftell(pb);
391 url_fskip(pb, gsize - (pos2 - pos1 + 24));
4d0c3dc0 392 } else if (!guidcmp(&g, &ff_asf_comment_header)) {
de6d9b64
FB
393 int len1, len2, len3, len4, len5;
394
395 len1 = get_le16(pb);
396 len2 = get_le16(pb);
397 len3 = get_le16(pb);
398 len4 = get_le16(pb);
399 len5 = get_le16(pb);
20e2a7ae
AJ
400 get_tag(s, "title" , 0, len1);
401 get_tag(s, "author" , 0, len2);
402 get_tag(s, "copyright", 0, len3);
403 get_tag(s, "comment" , 0, len4);
bb270c08 404 url_fskip(pb, len5);
4d0c3dc0 405 } else if (!guidcmp(&g, &stream_bitrate_guid)) {
0e3b6a6f
RM
406 int stream_count = get_le16(pb);
407 int j;
408
871e62e5
BF
409// av_log(s, AV_LOG_ERROR, "stream bitrate properties\n");
410// av_log(s, AV_LOG_ERROR, "streams %d\n", streams);
0e3b6a6f
RM
411 for(j = 0; j < stream_count; j++) {
412 int flags, bitrate, stream_id;
413
414 flags= get_le16(pb);
415 bitrate= get_le32(pb);
416 stream_id= (flags & 0x7f);
871e62e5 417// av_log(s, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate);
a9054d91 418 asf->stream_bitrates[stream_id]= bitrate;
0e3b6a6f 419 }
5f1ac36d
CC
420 } else if (!guidcmp(&g, &ff_asf_language_guid)) {
421 int j;
422 int stream_count = get_le16(pb);
423 for(j = 0; j < stream_count; j++) {
424 char lang[6];
425 unsigned int lang_len = get_byte(pb);
426 get_str16_nolen(pb, lang_len, lang, sizeof(lang));
427 if (j < 128)
428 av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
429 }
4d0c3dc0 430 } else if (!guidcmp(&g, &ff_asf_extended_content_header)) {
6d050dd6 431 int desc_count, i;
432
433 desc_count = get_le16(pb);
434 for(i=0;i<desc_count;i++) {
435 int name_len,value_type,value_len;
436 char name[1024];
437
438 name_len = get_le16(pb);
4a3104a9
AK
439 if (name_len%2) // must be even, broken lavf versions wrote len-1
440 name_len += 1;
6d050dd6 441 get_str16_nolen(pb, name_len, name, sizeof(name));
442 value_type = get_le16(pb);
443 value_len = get_le16(pb);
4a3104a9
AK
444 if (value_len%2)
445 value_len += 1;
6d050dd6 446 get_tag(s, name, value_type, value_len);
447 }
4d0c3dc0 448 } else if (!guidcmp(&g, &ff_asf_metadata_header)) {
30e88789
MN
449 int n, stream_num, name_len, value_len, value_type, value_num;
450 n = get_le16(pb);
451
452 for(i=0;i<n;i++) {
453 char name[1024];
454
455 get_le16(pb); //lang_list_index
456 stream_num= get_le16(pb);
457 name_len= get_le16(pb);
458 value_type= get_le16(pb);
459 value_len= get_le32(pb);
460
461 get_str16_nolen(pb, name_len, name, sizeof(name));
871e62e5 462//av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
755bfeab 463 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
464 url_fskip(pb, value_len - 2);
465
466 if(stream_num<128){
467 if (!strcmp(name, "AspectRatioX")) dar[stream_num].num= value_num;
468 else if(!strcmp(name, "AspectRatioY")) dar[stream_num].den= value_num;
469 }
470 }
4d0c3dc0 471 } else if (!guidcmp(&g, &ff_asf_ext_stream_header)) {
88141c91 472 int ext_len, payload_ext_ct, stream_ct;
d8470737 473 uint32_t ext_d, leak_rate, stream_num;
5f1ac36d 474 unsigned int stream_languageid_index;
88141c91 475
de3ae959
MN
476 get_le64(pb); // starttime
477 get_le64(pb); // endtime
d8470737 478 leak_rate = get_le32(pb); // leak-datarate
de3ae959
MN
479 get_le32(pb); // bucket-datasize
480 get_le32(pb); // init-bucket-fullness
481 get_le32(pb); // alt-leak-datarate
482 get_le32(pb); // alt-bucket-datasize
483 get_le32(pb); // alt-init-bucket-fullness
484 get_le32(pb); // max-object-size
485 get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
d8470737 486 stream_num = get_le16(pb); // stream-num
5f1ac36d
CC
487
488 stream_languageid_index = get_le16(pb); // stream-language-id-index
489 if (stream_num < 128)
490 asf->streams[stream_num].stream_language_index = stream_languageid_index;
491
de3ae959
MN
492 get_le64(pb); // avg frametime in 100ns units
493 stream_ct = get_le16(pb); //stream-name-count
494 payload_ext_ct = get_le16(pb); //payload-extension-system-count
88141c91 495
d8470737
ZM
496 if (stream_num < 128)
497 bitrate[stream_num] = leak_rate;
498
88141c91
MN
499 for (i=0; i<stream_ct; i++){
500 get_le16(pb);
501 ext_len = get_le16(pb);
502 url_fseek(pb, ext_len, SEEK_CUR);
503 }
504
505 for (i=0; i<payload_ext_ct; i++){
506 get_guid(pb, &g);
507 ext_d=get_le16(pb);
508 ext_len=get_le32(pb);
509 url_fseek(pb, ext_len, SEEK_CUR);
510 }
511
512 // there could be a optional stream properties object to follow
513 // if so the next iteration will pick it up
4d0c3dc0 514 } else if (!guidcmp(&g, &ff_asf_head1_guid)) {
de6d9b64
FB
515 int v1, v2;
516 get_guid(pb, &g);
517 v1 = get_le32(pb);
518 v2 = get_le16(pb);
88141c91 519#if 0
4d0c3dc0 520 } else if (!guidcmp(&g, &ff_asf_codec_comment_header)) {
de6d9b64
FB
521 int len, v1, n, num;
522 char str[256], *q;
523 char tag[16];
524
525 get_guid(pb, &g);
526 print_guid(&g);
2a10020b 527
de6d9b64
FB
528 n = get_le32(pb);
529 for(i=0;i<n;i++) {
530 num = get_le16(pb); /* stream number */
531 get_str16(pb, str, sizeof(str));
532 get_str16(pb, str, sizeof(str));
533 len = get_le16(pb);
534 q = tag;
535 while (len > 0) {
536 v1 = get_byte(pb);
537 if ((q - tag) < sizeof(tag) - 1)
538 *q++ = v1;
539 len--;
540 }
541 *q = '\0';
542 }
543#endif
544 } else if (url_feof(pb)) {
ccafd472 545 return -1;
de6d9b64 546 } else {
febd1c90
DT
547 if (!s->keylen) {
548 if (!guidcmp(&g, &ff_asf_content_encryption)) {
549 av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
550 } else if (!guidcmp(&g, &ff_asf_ext_content_encryption)) {
551 av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
552 } else if (!guidcmp(&g, &ff_asf_digital_signature)) {
553 av_log(s, AV_LOG_WARNING, "Digital signature detected, decoding will likely fail!\n");
554 }
555 }
de6d9b64
FB
556 url_fseek(pb, gsize - 24, SEEK_CUR);
557 }
558 }
559 get_guid(pb, &g);
560 get_le64(pb);
561 get_byte(pb);
562 get_byte(pb);
2141dc37 563 if (url_feof(pb))
ccafd472 564 return -1;
2141dc37 565 asf->data_offset = url_ftell(pb);
de6d9b64
FB
566 asf->packet_size_left = 0;
567
30e88789
MN
568
569 for(i=0; i<128; i++){
570 int stream_num= asf->asfid2avid[i];
d8470737 571 if(stream_num>=0){
59729451
AJ
572 AVStream *st = s->streams[stream_num];
573 if (!st->codec->bit_rate)
574 st->codec->bit_rate = bitrate[i];
d8470737 575 if (dar[i].num > 0 && dar[i].den > 0)
59729451
AJ
576 av_reduce(&st->sample_aspect_ratio.num,
577 &st->sample_aspect_ratio.den,
18d915dd 578 dar[i].num, dar[i].den, INT_MAX);
871e62e5 579//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
580
581 // copy and convert language codes to the frontend
582 if (asf->streams[i].stream_language_index < 128) {
583 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
584 if (rfc1766 && strlen(rfc1766) > 1) {
585 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
586 const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
587 if (iso6392)
588 av_metadata_set(&st->metadata, "language", iso6392);
589 }
590 }
30e88789
MN
591 }
592 }
593
de6d9b64 594 return 0;
de6d9b64
FB
595}
596
2a10020b
ZK
597#define DO_2BITS(bits, var, defval) \
598 switch (bits & 3) \
599 { \
600 case 3: var = get_le32(pb); rsize += 4; break; \
601 case 2: var = get_le16(pb); rsize += 2; break; \
602 case 1: var = get_byte(pb); rsize++; break; \
603 default: var = defval; break; \
604 }
605
277a28e8
RB
606/**
607 * Load a single ASF packet into the demuxer.
608 * @param s demux context
609 * @param pb context to read data from
610 * @returns 0 on success, <0 on error
611 */
612static int ff_asf_get_packet(AVFormatContext *s, ByteIOContext *pb)
de6d9b64
FB
613{
614 ASFContext *asf = s->priv_data;
2a10020b 615 uint32_t packet_length, padsize;
0c0d17f3 616 int rsize = 8;
0fd9e6f3
MN
617 int c, d, e, off;
618
68a10b40
RD
619 // if we do not know packet size, allow skipping up to 32 kB
620 off= 32768;
621 if (s->packet_size > 0)
b098b309 622 off= (url_ftell(pb) - s->data_offset) % s->packet_size + 3;
0fd9e6f3
MN
623
624 c=d=e=-1;
625 while(off-- > 0){
626 c=d; d=e;
627 e= get_byte(pb);
628 if(c == 0x82 && !d && !e)
629 break;
630 }
115329f1 631
1359c2d4 632 if (c != 0x82) {
2078ca16
RB
633 /**
634 * This code allows handling of -EAGAIN at packet boundaries (i.e.
635 * if the packet sync code above triggers -EAGAIN). This does not
636 * imply complete -EAGAIN handling support at random positions in
637 * the stream.
638 */
639 if (url_ferror(pb) == AVERROR(EAGAIN))
640 return AVERROR(EAGAIN);
5acdd6e6 641 if (!url_feof(pb))
bb270c08 642 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
2a10020b 643 }
0c0d17f3 644 if ((c & 0x8f) == 0x82) {
0fd9e6f3 645 if (d || e) {
5acdd6e6 646 if (!url_feof(pb))
bb270c08 647 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
f7835507 648 return -1;
bb270c08 649 }
0c0d17f3 650 c= get_byte(pb);
0fd9e6f3 651 d= get_byte(pb);
0c0d17f3
MN
652 rsize+=3;
653 }else{
654 url_fseek(pb, -1, SEEK_CUR); //FIXME
de6d9b64 655 }
2a10020b 656
0c0d17f3
MN
657 asf->packet_flags = c;
658 asf->packet_property = d;
2a10020b 659
91d19d47 660 DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
2a10020b
ZK
661 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
662 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
663
5b11e081 664 //the following checks prevent overflows and infinite loops
96f0731a 665 if(!packet_length || packet_length >= (1U<<29)){
5b11e081 666 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb));
ceba96cb 667 return -1;
5b11e081 668 }
92216453 669 if(padsize >= packet_length){
5b11e081 670 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, url_ftell(pb));
ceba96cb 671 return -1;
5b11e081
MN
672 }
673
2a10020b 674 asf->packet_timestamp = get_le32(pb);
de6d9b64 675 get_le16(pb); /* duration */
2141dc37 676 // rsize has at least 11 bytes which have to be present
2a10020b
ZK
677
678 if (asf->packet_flags & 0x01) {
bb270c08 679 asf->packet_segsizetype = get_byte(pb); rsize++;
2a10020b
ZK
680 asf->packet_segments = asf->packet_segsizetype & 0x3f;
681 } else {
bb270c08 682 asf->packet_segments = 1;
2a10020b
ZK
683 asf->packet_segsizetype = 0x80;
684 }
685 asf->packet_size_left = packet_length - padsize - rsize;
acbe6cfa
ZK
686 if (packet_length < asf->hdr.min_pktsize)
687 padsize += asf->hdr.min_pktsize - packet_length;
2a10020b 688 asf->packet_padsize = padsize;
91d19d47 689 dprintf(s, "packet: size=%d padsize=%d left=%d\n", s->packet_size, asf->packet_padsize, asf->packet_size_left);
de6d9b64
FB
690 return 0;
691}
692
ae60a857
MN
693/**
694 *
695 * @return <0 if error
696 */
d7fb5a18 697static int asf_read_frame_header(AVFormatContext *s, ByteIOContext *pb){
ae60a857 698 ASFContext *asf = s->priv_data;
ae60a857
MN
699 int rsize = 1;
700 int num = get_byte(pb);
559a55ad 701 int64_t ts0, ts1;
ae60a857
MN
702
703 asf->packet_segments--;
704 asf->packet_key_frame = num >> 7;
705 asf->stream_index = asf->asfid2avid[num & 0x7f];
706 // sequence should be ignored!
707 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
708 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
709 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
710//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);
711 if (asf->packet_replic_size >= 8) {
712 asf->packet_obj_size = get_le32(pb);
713 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
714 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
715 return -1;
716 }
717 asf->packet_frag_timestamp = get_le32(pb); // timestamp
559a55ad
MN
718 if(asf->packet_replic_size >= 8+38+4){
719// for(i=0; i<asf->packet_replic_size-8; i++)
720// av_log(s, AV_LOG_DEBUG, "%02X ",get_byte(pb));
721// av_log(s, AV_LOG_DEBUG, "\n");
722 url_fskip(pb, 10);
723 ts0= get_le64(pb);
724 ts1= get_le64(pb);
725 url_fskip(pb, 12);
726 get_le32(pb);
727 url_fskip(pb, asf->packet_replic_size - 8 - 38 - 4);
728 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
729 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
730 }else
731 url_fskip(pb, asf->packet_replic_size - 8);
ae60a857
MN
732 rsize += asf->packet_replic_size; // FIXME - check validity
733 } else if (asf->packet_replic_size==1){
efc90ebf 734 // multipacket - frag_offset is beginning timestamp
ae60a857
MN
735 asf->packet_time_start = asf->packet_frag_offset;
736 asf->packet_frag_offset = 0;
737 asf->packet_frag_timestamp = asf->packet_timestamp;
738
739 asf->packet_time_delta = get_byte(pb);
740 rsize++;
741 }else if(asf->packet_replic_size!=0){
742 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
743 return -1;
744 }
745 if (asf->packet_flags & 0x01) {
746 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
13f7e4b9
MN
747 if(asf->packet_frag_size > asf->packet_size_left - rsize){
748 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n");
749 return -1;
750 }
ae60a857
MN
751 //printf("Fragsize %d\n", asf->packet_frag_size);
752 } else {
753 asf->packet_frag_size = asf->packet_size_left - rsize;
754 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
755 }
756 if (asf->packet_replic_size == 1) {
757 asf->packet_multi_size = asf->packet_frag_size;
758 if (asf->packet_multi_size > asf->packet_size_left)
759 return -1;
760 }
761 asf->packet_size_left -= rsize;
762 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
763
764 return 0;
765}
766
277a28e8
RB
767/**
768 * Parse data from individual ASF packets (which were previously loaded
769 * with asf_get_packet()).
770 * @param s demux context
771 * @param pb context to read data from
772 * @param pkt pointer to store packet data into
773 * @returns 0 if data was stored in pkt, <0 on error or 1 if more ASF
774 * packets need to be loaded (through asf_get_packet())
775 */
776static int ff_asf_parse_packet(AVFormatContext *s, ByteIOContext *pb, AVPacket *pkt)
de6d9b64
FB
777{
778 ASFContext *asf = s->priv_data;
2a10020b 779 ASFStream *asf_st = 0;
2a10020b 780 for (;;) {
ceba96cb 781 if(url_feof(pb))
799a0722 782 return AVERROR_EOF;
bb270c08
DB
783 if (asf->packet_size_left < FRAME_HEADER_SIZE
784 || asf->packet_segments < 1) {
785 //asf->packet_size_left <= asf->packet_padsize) {
786 int ret = asf->packet_size_left + asf->packet_padsize;
949b1a13 787 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
5b11e081 788 assert(ret>=0);
bb270c08
DB
789 /* fail safe */
790 url_fskip(pb, ret);
b04d5d31 791
022f0b7c 792 asf->packet_pos= url_ftell(pb);
b6eaae39
KED
793 if (asf->data_object_size != (uint64_t)-1 &&
794 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
1d0036b0 795 return AVERROR_EOF; /* Do not exceed the size of the data object */
f27544fd 796 return 1;
bb270c08
DB
797 }
798 if (asf->packet_time_start == 0) {
b0d75d60 799 if(asf_read_frame_header(s, pb) < 0){
ae60a857 800 asf->packet_segments= 0;
236116cb 801 continue;
1305a9d5 802 }
bb270c08 803 if (asf->stream_index < 0
f3356e9c
MN
804 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
805 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
806 ) {
1359c2d4 807 asf->packet_time_start = 0;
bb270c08
DB
808 /* unhandled packet (should not happen) */
809 url_fskip(pb, asf->packet_frag_size);
810 asf->packet_size_left -= asf->packet_frag_size;
b9866ebc 811 if(asf->stream_index < 0)
ae60a857 812 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
1359c2d4 813 continue;
bb270c08
DB
814 }
815 asf->asf_st = s->streams[asf->stream_index]->priv_data;
816 }
817 asf_st = asf->asf_st;
818
bb270c08 819 if (asf->packet_replic_size == 1) {
efc90ebf 820 // frag_offset is here used as the beginning timestamp
bb270c08
DB
821 asf->packet_frag_timestamp = asf->packet_time_start;
822 asf->packet_time_start += asf->packet_time_delta;
823 asf->packet_obj_size = asf->packet_frag_size = get_byte(pb);
824 asf->packet_size_left--;
2141dc37 825 asf->packet_multi_size--;
bb270c08
DB
826 if (asf->packet_multi_size < asf->packet_obj_size)
827 {
828 asf->packet_time_start = 0;
829 url_fskip(pb, asf->packet_multi_size);
830 asf->packet_size_left -= asf->packet_multi_size;
2141dc37 831 continue;
bb270c08
DB
832 }
833 asf->packet_multi_size -= asf->packet_obj_size;
834 //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);
835 }
60ff1c44
MN
836 if( /*asf->packet_frag_size == asf->packet_obj_size*/
837 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
838 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
839 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
840 asf_st->frag_offset, asf->packet_frag_size,
841 asf->packet_obj_size, asf_st->pkt.size);
842 asf->packet_obj_size= asf_st->pkt.size;
843 }
844
f8f0a0bd
MN
845 if ( asf_st->pkt.size != asf->packet_obj_size
846 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
200026aa
MN
847 if(asf_st->pkt.data){
848 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
849 asf_st->frag_offset = 0;
850 av_free_packet(&asf_st->pkt);
851 }
bb270c08
DB
852 /* new packet */
853 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
854 asf_st->seq = asf->packet_seq;
eb63b051 855 asf_st->pkt.dts = asf->packet_frag_timestamp;
bb270c08 856 asf_st->pkt.stream_index = asf->stream_index;
115329f1
DB
857 asf_st->pkt.pos =
858 asf_st->packet_pos= asf->packet_pos;
859//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
82b9e4a2 860//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY,
01f4895c 861//s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size);
bb270c08
DB
862 if (s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO)
863 asf->packet_key_frame = 1;
864 if (asf->packet_key_frame)
865 asf_st->pkt.flags |= PKT_FLAG_KEY;
866 }
867
868 /* read data */
869 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
91d19d47 870 // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
bb270c08
DB
871 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
872 asf->packet_size_left -= asf->packet_frag_size;
873 if (asf->packet_size_left < 0)
2141dc37 874 continue;
4c71d727
MN
875
876 if( asf->packet_frag_offset >= asf_st->pkt.size
877 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
878 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
879 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
880 continue;
881 }
882
bb270c08
DB
883 get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
884 asf->packet_frag_size);
72be7db4
RD
885 if (s->key && s->keylen == 20)
886 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
887 asf->packet_frag_size);
bb270c08
DB
888 asf_st->frag_offset += asf->packet_frag_size;
889 /* test if whole packet is read */
890 if (asf_st->frag_offset == asf_st->pkt.size) {
da0b94f5
MN
891 //workaround for macroshit radio DVR-MS files
892 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
893 && asf_st->pkt.size > 100){
894 int i;
895 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
896 if(i == asf_st->pkt.size){
897 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
898 asf_st->frag_offset = 0;
899 av_free_packet(&asf_st->pkt);
900 continue;
901 }
902 }
903
bb270c08
DB
904 /* return packet */
905 if (asf_st->ds_span > 1) {
05219463 906 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
b43387d4 907 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 908 }else{
bb270c08 909 /* packet descrambling */
191e8ca7 910 uint8_t *newdata = av_malloc(asf_st->pkt.size);
bb270c08
DB
911 if (newdata) {
912 int offset = 0;
913 while (offset < asf_st->pkt.size) {
914 int off = offset / asf_st->ds_chunk_size;
915 int row = off / asf_st->ds_span;
916 int col = off % asf_st->ds_span;
917 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
918 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
05219463
MN
919
920 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
921 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
bb270c08
DB
922 memcpy(newdata + offset,
923 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
924 asf_st->ds_chunk_size);
925 offset += asf_st->ds_chunk_size;
926 }
927 av_free(asf_st->pkt.data);
928 asf_st->pkt.data = newdata;
929 }
05219463 930 }
bb270c08
DB
931 }
932 asf_st->frag_offset = 0;
b83e83b9 933 *pkt= asf_st->pkt;
bb270c08
DB
934 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
935 asf_st->pkt.size = 0;
936 asf_st->pkt.data = 0;
937 break; // packet completed
938 }
de6d9b64 939 }
de6d9b64
FB
940 return 0;
941}
942
f27544fd
RB
943static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
944{
945 ASFContext *asf = s->priv_data;
946
947 for (;;) {
948 int ret;
949
950 /* parse cached packets, if any */
1d217cdb 951 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
f27544fd 952 return ret;
1d217cdb 953 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
f27544fd
RB
954 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
955 asf->packet_time_start = 0;
956 }
957
958 return 0;
959}
960
38376f00
KK
961// Added to support seeking after packets have been read
962// If information is not reset, read_packet fails due to
963// leftover information from previous reads
964static void asf_reset_header(AVFormatContext *s)
965{
966 ASFContext *asf = s->priv_data;
82b9e4a2
MN
967 ASFStream *asf_st;
968 int i;
38376f00
KK
969
970 asf->packet_nb_frames = 0;
38376f00
KK
971 asf->packet_size_left = 0;
972 asf->packet_segments = 0;
973 asf->packet_flags = 0;
974 asf->packet_property = 0;
975 asf->packet_timestamp = 0;
976 asf->packet_segsizetype = 0;
977 asf->packet_segments = 0;
978 asf->packet_seq = 0;
979 asf->packet_replic_size = 0;
980 asf->packet_key_frame = 0;
981 asf->packet_padsize = 0;
982 asf->packet_frag_offset = 0;
983 asf->packet_frag_size = 0;
984 asf->packet_frag_timestamp = 0;
985 asf->packet_multi_size = 0;
986 asf->packet_obj_size = 0;
987 asf->packet_time_delta = 0;
988 asf->packet_time_start = 0;
115329f1 989
82b9e4a2
MN
990 for(i=0; i<s->nb_streams; i++){
991 asf_st= s->streams[i]->priv_data;
992 av_free_packet(&asf_st->pkt);
993 asf_st->frag_offset=0;
994 asf_st->seq=0;
995 }
996 asf->asf_st= NULL;
38376f00
KK
997}
998
5d25d2a9
DB
999static int asf_read_close(AVFormatContext *s)
1000{
1001 int i;
1002
1003 asf_reset_header(s);
1004 for(i=0;i<s->nb_streams;i++) {
1005 AVStream *st = s->streams[i];
5d25d2a9
DB
1006 av_free(st->codec->palctrl);
1007 }
1008 return 0;
1009}
1010
8d14a25c 1011static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
38376f00 1012{
38376f00 1013 AVPacket pkt1, *pkt = &pkt1;
82b9e4a2 1014 ASFStream *asf_st;
580fb5e7 1015 int64_t pts;
82b9e4a2 1016 int64_t pos= *ppos;
3e9245a9
MN
1017 int i;
1018 int64_t start_pos[s->nb_streams];
115329f1 1019
3e9245a9
MN
1020 for(i=0; i<s->nb_streams; i++){
1021 start_pos[i]= pos;
1022 }
115329f1 1023
68a10b40 1024 if (s->packet_size > 0)
b098b309 1025 pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
8d14a25c 1026 *ppos= pos;
899681cd 1027 url_fseek(s->pb, pos, SEEK_SET);
115329f1 1028
82b9e4a2 1029//printf("asf_read_pts\n");
82b9e4a2 1030 asf_reset_header(s);
3e9245a9 1031 for(;;){
82b9e4a2 1032 if (av_read_frame(s, pkt) < 0){
0b93103a 1033 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
bb270c08 1034 return AV_NOPTS_VALUE;
82b9e4a2 1035 }
115329f1 1036
38cf2a72 1037 pts= pkt->pts;
580fb5e7
MN
1038
1039 av_free_packet(pkt);
3e9245a9
MN
1040 if(pkt->flags&PKT_FLAG_KEY){
1041 i= pkt->stream_index;
1042
1043 asf_st= s->streams[i]->priv_data;
1044
91d19d47 1045// assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
8d14a25c 1046 pos= asf_st->packet_pos;
09646bab 1047
52e54612 1048 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
8d14a25c 1049 start_pos[i]= asf_st->packet_pos + 1;
115329f1 1050
3e9245a9
MN
1051 if(pkt->stream_index == stream_index)
1052 break;
1053 }
1054 }
1055
1056 *ppos= pos;
949b1a13 1057//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
580fb5e7
MN
1058
1059 return pts;
38376f00
KK
1060}
1061
56c96a22
MN
1062static void asf_build_simple_index(AVFormatContext *s, int stream_index)
1063{
b8b00d94 1064 ff_asf_guid g;
56c96a22 1065 ASFContext *asf = s->priv_data;
d728e3cd 1066 int64_t current_pos= url_ftell(s->pb);
56c96a22 1067 int i;
56c96a22 1068
899681cd
BA
1069 url_fseek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
1070 get_guid(s->pb, &g);
4d0c3dc0 1071 if (!guidcmp(&g, &index_guid)) {
134271c2 1072 int64_t itime, last_pos=-1;
d728e3cd 1073 int pct, ict;
dc1ed614 1074 int64_t av_unused gsize= get_le64(s->pb);
899681cd
BA
1075 get_guid(s->pb, &g);
1076 itime=get_le64(s->pb);
1077 pct=get_le32(s->pb);
1078 ict=get_le32(s->pb);
871e62e5 1079 av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
56c96a22
MN
1080
1081 for (i=0;i<ict;i++){
899681cd
BA
1082 int pktnum=get_le32(s->pb);
1083 int pktct =get_le16(s->pb);
91d19d47 1084 int64_t pos = s->data_offset + s->packet_size*(int64_t)pktnum;
d728e3cd 1085 int64_t index_pts= av_rescale(itime, i, 10000);
56c96a22 1086
134271c2 1087 if(pos != last_pos){
d728e3cd 1088 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct);
91d19d47 1089 av_add_index_entry(s->streams[stream_index], pos, index_pts, s->packet_size, 0, AVINDEX_KEYFRAME);
134271c2
MN
1090 last_pos=pos;
1091 }
56c96a22 1092 }
52e54612 1093 asf->index_read= 1;
56c96a22 1094 }
899681cd 1095 url_fseek(s->pb, current_pos, SEEK_SET);
56c96a22
MN
1096}
1097
3ba1438d 1098static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
2a10020b 1099{
afda223c 1100 ASFContext *asf = s->priv_data;
56c96a22
MN
1101 AVStream *st = s->streams[stream_index];
1102 int64_t pos;
1103 int index;
115329f1 1104
91d19d47 1105 if (s->packet_size <= 0)
38376f00
KK
1106 return -1;
1107
fa13095a 1108 /* Try using the protocol's read_seek if available */
fd2982a0 1109 if(s->pb) {
fa13095a
BA
1110 int ret = av_url_read_fseek(s->pb, stream_index, pts, flags);
1111 if(ret >= 0)
1112 asf_reset_header(s);
fd2982a0 1113 if (ret != AVERROR(ENOSYS))
cd31f8dc 1114 return ret;
fa13095a
BA
1115 }
1116
52e54612 1117 if (!asf->index_read)
56c96a22
MN
1118 asf_build_simple_index(s, stream_index);
1119
52e54612 1120 if(!(asf->index_read && st->index_entries)){
56c96a22
MN
1121 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
1122 return -1;
1123 }else{
1124 index= av_index_search_timestamp(st, pts, flags);
1125 if(index<0)
1126 return -1;
1127
1128 /* find the position */
1129 pos = st->index_entries[index].pos;
56c96a22
MN
1130
1131 // various attempts to find key frame have failed so far
1132 // asf_reset_header(s);
899681cd 1133 // url_fseek(s->pb, pos, SEEK_SET);
56c96a22
MN
1134 // key_pos = pos;
1135 // for(i=0;i<16;i++){
899681cd 1136 // pos = url_ftell(s->pb);
56c96a22
MN
1137 // if (av_read_frame(s, &pkt) < 0){
1138 // av_log(s, AV_LOG_INFO, "seek failed\n");
1139 // return -1;
1140 // }
1141 // asf_st = s->streams[stream_index]->priv_data;
1142 // pos += st->parser->frame_offset;
1143 //
1144 // if (pkt.size > b) {
1145 // b = pkt.size;
1146 // key_pos = pos;
1147 // }
1148 //
1149 // av_free_packet(&pkt);
1150 // }
1151
1152 /* do the seek */
871e62e5 1153 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
899681cd 1154 url_fseek(s->pb, pos, SEEK_SET);
56c96a22 1155 }
38376f00
KK
1156 asf_reset_header(s);
1157 return 0;
2a10020b
ZK
1158}
1159
ff70e601 1160AVInputFormat asf_demuxer = {
c9a65ca8 1161 "asf",
bde15e74 1162 NULL_IF_CONFIG_SMALL("ASF format"),
c9a65ca8
FB
1163 sizeof(ASFContext),
1164 asf_probe,
1165 asf_read_header,
1166 asf_read_packet,
1167 asf_read_close,
2a10020b 1168 asf_read_seek,
8d14a25c 1169 asf_read_pts,
719e721a 1170 .metadata_conv = ff_asf_metadata_conv,
c9a65ca8 1171};