check sample_fmt in avcodec_open
[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
de6d9b64 52#ifdef DEBUG
5082f759 53#define PRINT_IF_GUID(g,cmp) \
a750050f 54if (!ff_guidcmp(g, &cmp)) \
dfd2a005 55 av_dlog(NULL, "(GUID: %s) ", #cmp)
5082f759 56
b8b00d94 57static void print_guid(const ff_asf_guid *g)
de6d9b64
FB
58{
59 int i;
17af0525
AJ
60 PRINT_IF_GUID(g, ff_asf_header);
61 else PRINT_IF_GUID(g, ff_asf_file_header);
62 else PRINT_IF_GUID(g, ff_asf_stream_header);
63 else PRINT_IF_GUID(g, ff_asf_audio_stream);
64 else PRINT_IF_GUID(g, ff_asf_audio_conceal_none);
65 else PRINT_IF_GUID(g, ff_asf_video_stream);
66 else PRINT_IF_GUID(g, ff_asf_video_conceal_none);
67 else PRINT_IF_GUID(g, ff_asf_command_stream);
68 else PRINT_IF_GUID(g, ff_asf_comment_header);
69 else PRINT_IF_GUID(g, ff_asf_codec_comment_header);
70 else PRINT_IF_GUID(g, ff_asf_codec_comment1_header);
71 else PRINT_IF_GUID(g, ff_asf_data_header);
5082f759 72 else PRINT_IF_GUID(g, index_guid);
17af0525
AJ
73 else PRINT_IF_GUID(g, ff_asf_head1_guid);
74 else PRINT_IF_GUID(g, ff_asf_head2_guid);
75 else PRINT_IF_GUID(g, ff_asf_my_guid);
76 else PRINT_IF_GUID(g, ff_asf_ext_stream_header);
77 else PRINT_IF_GUID(g, ff_asf_extended_content_header);
78 else PRINT_IF_GUID(g, ff_asf_ext_stream_embed_stream_header);
79 else PRINT_IF_GUID(g, ff_asf_ext_stream_audio_stream);
80 else PRINT_IF_GUID(g, ff_asf_metadata_header);
88b51ea9 81 else PRINT_IF_GUID(g, ff_asf_marker_header);
0e3b6a6f 82 else PRINT_IF_GUID(g, stream_bitrate_guid);
5f1ac36d 83 else PRINT_IF_GUID(g, ff_asf_language_guid);
5082f759 84 else
dfd2a005 85 av_dlog(NULL, "(GUID: unknown) ");
24c14d6d 86 for(i=0;i<16;i++)
dfd2a005
LB
87 av_dlog(NULL, " 0x%02x,", (*g)[i]);
88 av_dlog(NULL, "}\n");
de6d9b64 89}
6df84c3a 90#undef PRINT_IF_GUID
f94981ea
MR
91#else
92#define print_guid(g)
de6d9b64
FB
93#endif
94
a750050f 95void ff_get_guid(ByteIOContext *s, ff_asf_guid *g)
de6d9b64 96{
24c14d6d 97 assert(sizeof(*g) == 16);
3dc761a4 98 get_buffer(s, *g, sizeof(*g));
de6d9b64
FB
99}
100
c9a65ca8
FB
101static int asf_probe(AVProbeData *pd)
102{
c9a65ca8 103 /* check file header */
a750050f 104 if (!ff_guidcmp(pd->buf, &ff_asf_header))
c9a65ca8
FB
105 return AVPROBE_SCORE_MAX;
106 else
107 return 0;
108}
109
30e88789
MN
110static int get_value(ByteIOContext *pb, int type){
111 switch(type){
112 case 2: return get_le32(pb);
113 case 3: return get_le32(pb);
114 case 4: return get_le64(pb);
115 case 5: return get_le16(pb);
116 default:return INT_MIN;
117 }
118}
119
20e2a7ae
AJ
120static void get_tag(AVFormatContext *s, const char *key, int type, int len)
121{
12ad6671 122 char *value;
04295054 123 int64_t off = url_ftell(s->pb);
12ad6671 124
fce44489 125 if ((unsigned)len >= (UINT_MAX - 1)/2)
12ad6671
MN
126 return;
127
fce44489 128 value = av_malloc(2*len+1);
12ad6671 129 if (!value)
04295054 130 goto finish;
12ad6671 131
6538c0f1 132 if (type == 0) { // UTF16-LE
93b78d12 133 avio_get_str16le(s->pb, len, value, 2*len + 1);
6538c0f1 134 } else if (type > 1 && type <= 5) { // boolean or DWORD or QWORD or WORD
20e2a7ae 135 uint64_t num = get_value(s->pb, type);
12ad6671 136 snprintf(value, len, "%"PRIu64, num);
20e2a7ae 137 } else {
27e74927 138 av_log(s, AV_LOG_DEBUG, "Unsupported value type %d in tag %s.\n", type, key);
04295054 139 goto finish;
20e2a7ae 140 }
fce44489 141 av_metadata_set2(&s->metadata, key, value, 0);
04295054 142finish:
fce44489 143 av_freep(&value);
04295054 144 url_fseek(s->pb, off + len, SEEK_SET);
20e2a7ae
AJ
145}
146
de6d9b64
FB
147static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
148{
c9a65ca8 149 ASFContext *asf = s->priv_data;
b8b00d94 150 ff_asf_guid g;
899681cd 151 ByteIOContext *pb = s->pb;
de6d9b64
FB
152 AVStream *st;
153 ASFStream *asf_st;
e095026a 154 int size, i;
0c1a9eda 155 int64_t gsize;
30e88789 156 AVRational dar[128];
d8470737 157 uint32_t bitrate[128];
30e88789
MN
158
159 memset(dar, 0, sizeof(dar));
d8470737 160 memset(bitrate, 0, sizeof(bitrate));
de6d9b64 161
a750050f
PR
162 ff_get_guid(pb, &g);
163 if (ff_guidcmp(&g, &ff_asf_header))
ccafd472 164 return -1;
de6d9b64
FB
165 get_le64(pb);
166 get_le32(pb);
167 get_byte(pb);
168 get_byte(pb);
2141dc37 169 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
de6d9b64 170 for(;;) {
cb0061d4 171 uint64_t gpos= url_ftell(pb);
93b78d12 172 int ret;
a750050f 173 ff_get_guid(pb, &g);
de6d9b64 174 gsize = get_le64(pb);
dfd2a005 175 av_dlog(s, "%08"PRIx64": ", gpos);
de6d9b64 176 print_guid(&g);
dfd2a005 177 av_dlog(s, " size=0x%"PRIx64"\n", gsize);
a750050f 178 if (!ff_guidcmp(&g, &ff_asf_data_header)) {
09d9672a
MN
179 asf->data_object_offset = url_ftell(pb);
180 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
181 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
182 asf->data_object_size = gsize - 24;
183 } else {
184 asf->data_object_size = (uint64_t)-1;
185 }
186 break;
187 }
de6d9b64 188 if (gsize < 24)
ccafd472 189 return -1;
a750050f
PR
190 if (!ff_guidcmp(&g, &ff_asf_file_header)) {
191 ff_get_guid(pb, &asf->hdr.guid);
bb270c08
DB
192 asf->hdr.file_size = get_le64(pb);
193 asf->hdr.create_time = get_le64(pb);
6bb2a2df 194 asf->nb_packets = get_le64(pb);
bb270c08 195 asf->hdr.play_time = get_le64(pb);
b4bbcd63 196 asf->hdr.send_time = get_le64(pb);
bb270c08
DB
197 asf->hdr.preroll = get_le32(pb);
198 asf->hdr.ignore = get_le32(pb);
199 asf->hdr.flags = get_le32(pb);
200 asf->hdr.min_pktsize = get_le32(pb);
201 asf->hdr.max_pktsize = get_le32(pb);
202 asf->hdr.max_bitrate = get_le32(pb);
91d19d47 203 s->packet_size = asf->hdr.max_pktsize;
a750050f 204 } else if (!ff_guidcmp(&g, &ff_asf_stream_header)) {
72415b2a 205 enum AVMediaType type;
fb65d2ca 206 int type_specific_size, sizeX;
7ad5455c 207 uint64_t total_size;
de6d9b64 208 unsigned int tag1;
371bf806 209 int64_t pos1, pos2, start_time;
6fea687e 210 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
2a10020b 211
30cdfb49
MR
212 if (s->nb_streams == ASF_MAX_STREAMS) {
213 av_log(s, AV_LOG_ERROR, "too many streams\n");
214 return AVERROR(EINVAL);
215 }
216
de6d9b64
FB
217 pos1 = url_ftell(pb);
218
247eadca 219 st = av_new_stream(s, 0);
de6d9b64 220 if (!st)
ccafd472 221 return AVERROR(ENOMEM);
9ee91c2f 222 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
de6d9b64
FB
223 asf_st = av_mallocz(sizeof(ASFStream));
224 if (!asf_st)
ccafd472 225 return AVERROR(ENOMEM);
de6d9b64 226 st->priv_data = asf_st;
371bf806
MN
227 start_time = asf->hdr.preroll;
228
5f1ac36d
CC
229 asf_st->stream_language_index = 128; // invalid stream index means no language info
230
73fe1052 231 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
f2086fb5 232 st->duration = asf->hdr.play_time /
371bf806 233 (10000000 / 1000) - start_time;
73fe1052 234 }
a750050f 235 ff_get_guid(pb, &g);
88141c91
MN
236
237 test_for_ext_stream_audio = 0;
a750050f 238 if (!ff_guidcmp(&g, &ff_asf_audio_stream)) {
72415b2a 239 type = AVMEDIA_TYPE_AUDIO;
a750050f 240 } else if (!ff_guidcmp(&g, &ff_asf_video_stream)) {
72415b2a 241 type = AVMEDIA_TYPE_VIDEO;
a750050f 242 } else if (!ff_guidcmp(&g, &ff_asf_jfif_media)) {
a3ab7c32
MS
243 type = AVMEDIA_TYPE_VIDEO;
244 st->codec->codec_id = CODEC_ID_MJPEG;
a750050f 245 } else if (!ff_guidcmp(&g, &ff_asf_command_stream)) {
72415b2a 246 type = AVMEDIA_TYPE_DATA;
a750050f 247 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
88141c91 248 test_for_ext_stream_audio = 1;
72415b2a 249 type = AVMEDIA_TYPE_UNKNOWN;
de6d9b64 250 } else {
ccafd472 251 return -1;
de6d9b64 252 }
a750050f 253 ff_get_guid(pb, &g);
de6d9b64 254 total_size = get_le64(pb);
2e7973bb 255 type_specific_size = get_le32(pb);
de6d9b64 256 get_le32(pb);
bb270c08 257 st->id = get_le16(pb) & 0x7f; /* stream id */
2a10020b 258 // mapping of asf ID to AV stream ID;
247eadca 259 asf->asfid2avid[st->id] = s->nb_streams - 1;
2a10020b 260
de6d9b64 261 get_le32(pb);
88141c91
MN
262
263 if (test_for_ext_stream_audio) {
a750050f
PR
264 ff_get_guid(pb, &g);
265 if (!ff_guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
72415b2a 266 type = AVMEDIA_TYPE_AUDIO;
6fea687e 267 is_dvr_ms_audio=1;
a750050f 268 ff_get_guid(pb, &g);
88141c91
MN
269 get_le32(pb);
270 get_le32(pb);
271 get_le32(pb);
a750050f 272 ff_get_guid(pb, &g);
88141c91
MN
273 get_le32(pb);
274 }
275 }
276
bb270c08 277 st->codec->codec_type = type;
72415b2a 278 if (type == AVMEDIA_TYPE_AUDIO) {
1a40491e 279 ff_get_wav_header(pb, st->codec, type_specific_size);
6fea687e
JD
280 if (is_dvr_ms_audio) {
281 // codec_id and codec_tag are unreliable in dvr_ms
282 // files. Set them later by probing stream.
0bef08e5 283 st->codec->codec_id = CODEC_ID_PROBE;
6fea687e
JD
284 st->codec->codec_tag = 0;
285 }
e7f73adb
AC
286 if (st->codec->codec_id == CODEC_ID_AAC) {
287 st->need_parsing = AVSTREAM_PARSE_NONE;
288 } else {
e9259f8d 289 st->need_parsing = AVSTREAM_PARSE_FULL;
e7f73adb 290 }
bb270c08
DB
291 /* We have to init the frame size at some point .... */
292 pos2 = url_ftell(pb);
b9c6d01b 293 if (gsize >= (pos2 + 8 - pos1 + 24)) {
bb270c08
DB
294 asf_st->ds_span = get_byte(pb);
295 asf_st->ds_packet_size = get_le16(pb);
296 asf_st->ds_chunk_size = get_le16(pb);
6bb2a2df
MN
297 get_le16(pb); //ds_data_size
298 get_byte(pb); //ds_silence_data
bb270c08
DB
299 }
300 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
301 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
302 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
303 if (asf_st->ds_span > 1) {
304 if (!asf_st->ds_chunk_size
05219463
MN
305 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
306 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
bb270c08
DB
307 asf_st->ds_span = 0; // disable descrambling
308 }
01f4895c 309 switch (st->codec->codec_id) {
80783dc2 310 case CODEC_ID_MP3:
01f4895c 311 st->codec->frame_size = MPA_FRAME_SIZE;
f80c1ac0
PG
312 break;
313 case CODEC_ID_PCM_S16LE:
314 case CODEC_ID_PCM_S16BE:
315 case CODEC_ID_PCM_U16LE:
316 case CODEC_ID_PCM_U16BE:
317 case CODEC_ID_PCM_S8:
318 case CODEC_ID_PCM_U8:
319 case CODEC_ID_PCM_ALAW:
320 case CODEC_ID_PCM_MULAW:
01f4895c 321 st->codec->frame_size = 1;
f80c1ac0
PG
322 break;
323 default:
324 /* This is probably wrong, but it prevents a crash later */
01f4895c 325 st->codec->frame_size = 1;
f80c1ac0
PG
326 break;
327 }
fed79592 328 } else if (type == AVMEDIA_TYPE_VIDEO &&
d970ec75 329 gsize - (url_ftell(pb) - pos1 + 24) >= 51) {
bb270c08 330 get_le32(pb);
de6d9b64
FB
331 get_le32(pb);
332 get_byte(pb);
333 size = get_le16(pb); /* size */
0ffd77b9 334 sizeX= get_le32(pb); /* size */
01f4895c 335 st->codec->width = get_le32(pb);
bb270c08 336 st->codec->height = get_le32(pb);
2a10020b 337 /* not available for asf */
de6d9b64 338 get_le16(pb); /* panes */
dd1c8f3e 339 st->codec->bits_per_coded_sample = get_le16(pb); /* depth */
de6d9b64 340 tag1 = get_le32(pb);
bb270c08 341 url_fskip(pb, 20);
871e62e5 342// av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
0ffd77b9 343 size= sizeX;
bb270c08
DB
344 if (size > 40) {
345 st->codec->extradata_size = size - 40;
346 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
347 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
348 }
5e29abf8 349
6d050dd6 350 /* Extract palette from extradata if bpp <= 8 */
351 /* This code assumes that extradata contains only palette */
352 /* This is true for all paletted codecs implemented in ffmpeg */
353 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
354 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
63613fe6 355#if HAVE_BIGENDIAN
6d050dd6 356 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
8fc0162a 357 st->codec->palctrl->palette[i] = av_bswap32(((uint32_t*)st->codec->extradata)[i]);
5e29abf8 358#else
6d050dd6 359 memcpy(st->codec->palctrl->palette, st->codec->extradata,
360 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
5e29abf8 361#endif
6d050dd6 362 st->codec->palctrl->palette_changed = 1;
363 }
5e29abf8 364
01f4895c 365 st->codec->codec_tag = tag1;
1a40491e 366 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
31247669 367 if(tag1 == MKTAG('D', 'V', 'R', ' ')){
57004ff1 368 st->need_parsing = AVSTREAM_PARSE_FULL;
31247669
MN
369 // 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
370 st->codec->width =
371 st->codec->height = 0;
372 av_freep(&st->codec->extradata);
373 st->codec->extradata_size=0;
374 }
1ed87f80
AC
375 if(st->codec->codec_id == CODEC_ID_H264)
376 st->need_parsing = AVSTREAM_PARSE_FULL_ONCE;
de6d9b64
FB
377 }
378 pos2 = url_ftell(pb);
379 url_fskip(pb, gsize - (pos2 - pos1 + 24));
a750050f 380 } else if (!ff_guidcmp(&g, &ff_asf_comment_header)) {
de6d9b64
FB
381 int len1, len2, len3, len4, len5;
382
383 len1 = get_le16(pb);
384 len2 = get_le16(pb);
385 len3 = get_le16(pb);
386 len4 = get_le16(pb);
387 len5 = get_le16(pb);
20e2a7ae
AJ
388 get_tag(s, "title" , 0, len1);
389 get_tag(s, "author" , 0, len2);
390 get_tag(s, "copyright", 0, len3);
391 get_tag(s, "comment" , 0, len4);
bb270c08 392 url_fskip(pb, len5);
a750050f 393 } else if (!ff_guidcmp(&g, &stream_bitrate_guid)) {
0e3b6a6f
RM
394 int stream_count = get_le16(pb);
395 int j;
396
871e62e5
BF
397// av_log(s, AV_LOG_ERROR, "stream bitrate properties\n");
398// av_log(s, AV_LOG_ERROR, "streams %d\n", streams);
0e3b6a6f
RM
399 for(j = 0; j < stream_count; j++) {
400 int flags, bitrate, stream_id;
401
402 flags= get_le16(pb);
403 bitrate= get_le32(pb);
404 stream_id= (flags & 0x7f);
871e62e5 405// av_log(s, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate);
a9054d91 406 asf->stream_bitrates[stream_id]= bitrate;
0e3b6a6f 407 }
a750050f 408 } else if (!ff_guidcmp(&g, &ff_asf_language_guid)) {
5f1ac36d
CC
409 int j;
410 int stream_count = get_le16(pb);
411 for(j = 0; j < stream_count; j++) {
412 char lang[6];
413 unsigned int lang_len = get_byte(pb);
93b78d12
AK
414 if ((ret = avio_get_str16le(pb, lang_len, lang, sizeof(lang))) < lang_len)
415 url_fskip(pb, lang_len - ret);
5f1ac36d
CC
416 if (j < 128)
417 av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
418 }
a750050f 419 } else if (!ff_guidcmp(&g, &ff_asf_extended_content_header)) {
6d050dd6 420 int desc_count, i;
421
422 desc_count = get_le16(pb);
423 for(i=0;i<desc_count;i++) {
424 int name_len,value_type,value_len;
425 char name[1024];
426
427 name_len = get_le16(pb);
4a3104a9
AK
428 if (name_len%2) // must be even, broken lavf versions wrote len-1
429 name_len += 1;
93b78d12
AK
430 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
431 url_fskip(pb, name_len - ret);
6d050dd6 432 value_type = get_le16(pb);
433 value_len = get_le16(pb);
514b73cf 434 if (!value_type && value_len%2)
4a3104a9 435 value_len += 1;
6ac6e3d1
RB
436 /**
437 * My sample has that stream set to 0 maybe that mean the container.
438 * Asf stream count start at 1. I am using 0 to the container value since it's unused
439 */
440 if (!strcmp(name, "AspectRatioX")){
441 dar[0].num= get_value(s->pb, value_type);
442 } else if(!strcmp(name, "AspectRatioY")){
443 dar[0].den= get_value(s->pb, value_type);
b7d56a17
CEH
444 } else
445 get_tag(s, name, value_type, value_len);
6d050dd6 446 }
a750050f 447 } else if (!ff_guidcmp(&g, &ff_asf_metadata_header)) {
30e88789
MN
448 int n, stream_num, name_len, value_len, value_type, value_num;
449 n = get_le16(pb);
450
451 for(i=0;i<n;i++) {
452 char name[1024];
453
454 get_le16(pb); //lang_list_index
455 stream_num= get_le16(pb);
456 name_len= get_le16(pb);
457 value_type= get_le16(pb);
458 value_len= get_le32(pb);
459
93b78d12
AK
460 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
461 url_fskip(pb, name_len - ret);
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 }
a750050f 471 } else if (!ff_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++){
a750050f 506 ff_get_guid(pb, &g);
88141c91
MN
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
1d4c1c3b 514 continue;
a750050f 515 } else if (!ff_guidcmp(&g, &ff_asf_head1_guid)) {
de6d9b64 516 int v1, v2;
a750050f 517 ff_get_guid(pb, &g);
de6d9b64
FB
518 v1 = get_le32(pb);
519 v2 = get_le16(pb);
1d4c1c3b 520 continue;
a750050f 521 } else if (!ff_guidcmp(&g, &ff_asf_marker_header)) {
88b51ea9
VP
522 int i, count, name_len;
523 char name[1024];
524
525 get_le64(pb); // reserved 16 bytes
526 get_le64(pb); // ...
527 count = get_le32(pb); // markers count
528 get_le16(pb); // reserved 2 bytes
529 name_len = get_le16(pb); // name length
530 for(i=0;i<name_len;i++){
531 get_byte(pb); // skip the name
532 }
533
534 for(i=0;i<count;i++){
535 int64_t pres_time;
536 int name_len;
537
538 get_le64(pb); // offset, 8 bytes
539 pres_time = get_le64(pb); // presentation time
540 get_le16(pb); // entry length
541 get_le32(pb); // send time
542 get_le32(pb); // flags
543 name_len = get_le32(pb); // name length
93b78d12
AK
544 if ((ret = avio_get_str16le(pb, name_len * 2, name, sizeof(name))) < name_len)
545 url_fskip(pb, name_len - ret);
88b51ea9
VP
546 ff_new_chapter(s, i, (AVRational){1, 10000000}, pres_time, AV_NOPTS_VALUE, name );
547 }
de6d9b64 548 } else if (url_feof(pb)) {
ccafd472 549 return -1;
de6d9b64 550 } else {
febd1c90 551 if (!s->keylen) {
a750050f 552 if (!ff_guidcmp(&g, &ff_asf_content_encryption)) {
febd1c90 553 av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
a750050f 554 } else if (!ff_guidcmp(&g, &ff_asf_ext_content_encryption)) {
febd1c90 555 av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
a750050f 556 } else if (!ff_guidcmp(&g, &ff_asf_digital_signature)) {
febd1c90
DT
557 av_log(s, AV_LOG_WARNING, "Digital signature detected, decoding will likely fail!\n");
558 }
559 }
de6d9b64 560 }
cb0061d4
MN
561 if(url_ftell(pb) != gpos + gsize)
562 av_log(s, AV_LOG_DEBUG, "gpos mismatch our pos=%"PRIu64", end=%"PRIu64"\n", url_ftell(pb)-gpos, gsize);
563 url_fseek(pb, gpos + gsize, SEEK_SET);
de6d9b64 564 }
a750050f 565 ff_get_guid(pb, &g);
de6d9b64
FB
566 get_le64(pb);
567 get_byte(pb);
568 get_byte(pb);
2141dc37 569 if (url_feof(pb))
ccafd472 570 return -1;
2141dc37 571 asf->data_offset = url_ftell(pb);
de6d9b64
FB
572 asf->packet_size_left = 0;
573
30e88789
MN
574
575 for(i=0; i<128; i++){
576 int stream_num= asf->asfid2avid[i];
d8470737 577 if(stream_num>=0){
59729451
AJ
578 AVStream *st = s->streams[stream_num];
579 if (!st->codec->bit_rate)
580 st->codec->bit_rate = bitrate[i];
6ac6e3d1 581 if (dar[i].num > 0 && dar[i].den > 0){
59729451
AJ
582 av_reduce(&st->sample_aspect_ratio.num,
583 &st->sample_aspect_ratio.den,
18d915dd 584 dar[i].num, dar[i].den, INT_MAX);
b9f9e59a 585 } else if ((dar[0].num > 0) && (dar[0].den > 0) && (st->codec->codec_type==AVMEDIA_TYPE_VIDEO)) // Use ASF container value if the stream doesn't AR set.
6ac6e3d1
RB
586 av_reduce(&st->sample_aspect_ratio.num,
587 &st->sample_aspect_ratio.den,
588 dar[0].num, dar[0].den, INT_MAX);
589
590//av_log(s, AV_LOG_INFO, "i=%d, st->codec->codec_type:%d, dar %d:%d sar=%d:%d\n", i, st->codec->codec_type, dar[i].num, dar[i].den, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
5f1ac36d
CC
591
592 // copy and convert language codes to the frontend
593 if (asf->streams[i].stream_language_index < 128) {
594 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
595 if (rfc1766 && strlen(rfc1766) > 1) {
596 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
597 const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
598 if (iso6392)
2ef6c124 599 av_metadata_set2(&st->metadata, "language", iso6392, 0);
5f1ac36d
CC
600 }
601 }
30e88789
MN
602 }
603 }
604
ad7768f4 605 ff_metadata_conv(&s->metadata, NULL, ff_asf_metadata_conv);
03700d39 606
de6d9b64 607 return 0;
de6d9b64
FB
608}
609
2a10020b
ZK
610#define DO_2BITS(bits, var, defval) \
611 switch (bits & 3) \
612 { \
613 case 3: var = get_le32(pb); rsize += 4; break; \
614 case 2: var = get_le16(pb); rsize += 2; break; \
615 case 1: var = get_byte(pb); rsize++; break; \
616 default: var = defval; break; \
617 }
618
277a28e8
RB
619/**
620 * Load a single ASF packet into the demuxer.
621 * @param s demux context
622 * @param pb context to read data from
32e543f8 623 * @return 0 on success, <0 on error
277a28e8
RB
624 */
625static int ff_asf_get_packet(AVFormatContext *s, ByteIOContext *pb)
de6d9b64
FB
626{
627 ASFContext *asf = s->priv_data;
2a10020b 628 uint32_t packet_length, padsize;
0c0d17f3 629 int rsize = 8;
0fd9e6f3
MN
630 int c, d, e, off;
631
68a10b40
RD
632 // if we do not know packet size, allow skipping up to 32 kB
633 off= 32768;
634 if (s->packet_size > 0)
b098b309 635 off= (url_ftell(pb) - s->data_offset) % s->packet_size + 3;
0fd9e6f3
MN
636
637 c=d=e=-1;
638 while(off-- > 0){
639 c=d; d=e;
640 e= get_byte(pb);
641 if(c == 0x82 && !d && !e)
642 break;
643 }
115329f1 644
1359c2d4 645 if (c != 0x82) {
2078ca16
RB
646 /**
647 * This code allows handling of -EAGAIN at packet boundaries (i.e.
648 * if the packet sync code above triggers -EAGAIN). This does not
649 * imply complete -EAGAIN handling support at random positions in
650 * the stream.
651 */
652 if (url_ferror(pb) == AVERROR(EAGAIN))
653 return AVERROR(EAGAIN);
5acdd6e6 654 if (!url_feof(pb))
bb270c08 655 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
2a10020b 656 }
0c0d17f3 657 if ((c & 0x8f) == 0x82) {
0fd9e6f3 658 if (d || e) {
5acdd6e6 659 if (!url_feof(pb))
bb270c08 660 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
f7835507 661 return -1;
bb270c08 662 }
0c0d17f3 663 c= get_byte(pb);
0fd9e6f3 664 d= get_byte(pb);
0c0d17f3
MN
665 rsize+=3;
666 }else{
667 url_fseek(pb, -1, SEEK_CUR); //FIXME
de6d9b64 668 }
2a10020b 669
0c0d17f3
MN
670 asf->packet_flags = c;
671 asf->packet_property = d;
2a10020b 672
91d19d47 673 DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
2a10020b
ZK
674 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
675 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
676
5b11e081 677 //the following checks prevent overflows and infinite loops
96f0731a 678 if(!packet_length || packet_length >= (1U<<29)){
5b11e081 679 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb));
ceba96cb 680 return -1;
5b11e081 681 }
92216453 682 if(padsize >= packet_length){
5b11e081 683 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, url_ftell(pb));
ceba96cb 684 return -1;
5b11e081
MN
685 }
686
2a10020b 687 asf->packet_timestamp = get_le32(pb);
de6d9b64 688 get_le16(pb); /* duration */
2141dc37 689 // rsize has at least 11 bytes which have to be present
2a10020b
ZK
690
691 if (asf->packet_flags & 0x01) {
bb270c08 692 asf->packet_segsizetype = get_byte(pb); rsize++;
2a10020b
ZK
693 asf->packet_segments = asf->packet_segsizetype & 0x3f;
694 } else {
bb270c08 695 asf->packet_segments = 1;
2a10020b
ZK
696 asf->packet_segsizetype = 0x80;
697 }
698 asf->packet_size_left = packet_length - padsize - rsize;
acbe6cfa
ZK
699 if (packet_length < asf->hdr.min_pktsize)
700 padsize += asf->hdr.min_pktsize - packet_length;
2a10020b 701 asf->packet_padsize = padsize;
dfd2a005 702 av_dlog(s, "packet: size=%d padsize=%d left=%d\n", s->packet_size, asf->packet_padsize, asf->packet_size_left);
de6d9b64
FB
703 return 0;
704}
705
ae60a857
MN
706/**
707 *
708 * @return <0 if error
709 */
d7fb5a18 710static int asf_read_frame_header(AVFormatContext *s, ByteIOContext *pb){
ae60a857 711 ASFContext *asf = s->priv_data;
ae60a857
MN
712 int rsize = 1;
713 int num = get_byte(pb);
559a55ad 714 int64_t ts0, ts1;
ae60a857
MN
715
716 asf->packet_segments--;
717 asf->packet_key_frame = num >> 7;
718 asf->stream_index = asf->asfid2avid[num & 0x7f];
719 // sequence should be ignored!
720 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
721 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
722 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
723//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);
724 if (asf->packet_replic_size >= 8) {
725 asf->packet_obj_size = get_le32(pb);
726 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
727 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
728 return -1;
729 }
730 asf->packet_frag_timestamp = get_le32(pb); // timestamp
559a55ad
MN
731 if(asf->packet_replic_size >= 8+38+4){
732// for(i=0; i<asf->packet_replic_size-8; i++)
733// av_log(s, AV_LOG_DEBUG, "%02X ",get_byte(pb));
734// av_log(s, AV_LOG_DEBUG, "\n");
735 url_fskip(pb, 10);
736 ts0= get_le64(pb);
737 ts1= get_le64(pb);
738 url_fskip(pb, 12);
739 get_le32(pb);
740 url_fskip(pb, asf->packet_replic_size - 8 - 38 - 4);
741 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
742 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
743 }else
744 url_fskip(pb, asf->packet_replic_size - 8);
ae60a857
MN
745 rsize += asf->packet_replic_size; // FIXME - check validity
746 } else if (asf->packet_replic_size==1){
efc90ebf 747 // multipacket - frag_offset is beginning timestamp
ae60a857
MN
748 asf->packet_time_start = asf->packet_frag_offset;
749 asf->packet_frag_offset = 0;
750 asf->packet_frag_timestamp = asf->packet_timestamp;
751
752 asf->packet_time_delta = get_byte(pb);
753 rsize++;
754 }else if(asf->packet_replic_size!=0){
755 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
756 return -1;
757 }
758 if (asf->packet_flags & 0x01) {
759 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
13f7e4b9
MN
760 if(asf->packet_frag_size > asf->packet_size_left - rsize){
761 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n");
762 return -1;
763 }
ae60a857
MN
764 //printf("Fragsize %d\n", asf->packet_frag_size);
765 } else {
766 asf->packet_frag_size = asf->packet_size_left - rsize;
767 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
768 }
769 if (asf->packet_replic_size == 1) {
770 asf->packet_multi_size = asf->packet_frag_size;
771 if (asf->packet_multi_size > asf->packet_size_left)
772 return -1;
773 }
774 asf->packet_size_left -= rsize;
775 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
776
777 return 0;
778}
779
277a28e8
RB
780/**
781 * Parse data from individual ASF packets (which were previously loaded
782 * with asf_get_packet()).
783 * @param s demux context
784 * @param pb context to read data from
785 * @param pkt pointer to store packet data into
32e543f8 786 * @return 0 if data was stored in pkt, <0 on error or 1 if more ASF
277a28e8
RB
787 * packets need to be loaded (through asf_get_packet())
788 */
789static int ff_asf_parse_packet(AVFormatContext *s, ByteIOContext *pb, AVPacket *pkt)
de6d9b64
FB
790{
791 ASFContext *asf = s->priv_data;
2a10020b 792 ASFStream *asf_st = 0;
2a10020b 793 for (;;) {
4172951b 794 int ret;
ceba96cb 795 if(url_feof(pb))
799a0722 796 return AVERROR_EOF;
bb270c08
DB
797 if (asf->packet_size_left < FRAME_HEADER_SIZE
798 || asf->packet_segments < 1) {
799 //asf->packet_size_left <= asf->packet_padsize) {
800 int ret = asf->packet_size_left + asf->packet_padsize;
949b1a13 801 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
5b11e081 802 assert(ret>=0);
bb270c08
DB
803 /* fail safe */
804 url_fskip(pb, ret);
b04d5d31 805
022f0b7c 806 asf->packet_pos= url_ftell(pb);
b6eaae39
KED
807 if (asf->data_object_size != (uint64_t)-1 &&
808 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
1d0036b0 809 return AVERROR_EOF; /* Do not exceed the size of the data object */
f27544fd 810 return 1;
bb270c08
DB
811 }
812 if (asf->packet_time_start == 0) {
b0d75d60 813 if(asf_read_frame_header(s, pb) < 0){
ae60a857 814 asf->packet_segments= 0;
236116cb 815 continue;
1305a9d5 816 }
bb270c08 817 if (asf->stream_index < 0
f3356e9c
MN
818 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
819 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
820 ) {
1359c2d4 821 asf->packet_time_start = 0;
bb270c08
DB
822 /* unhandled packet (should not happen) */
823 url_fskip(pb, asf->packet_frag_size);
824 asf->packet_size_left -= asf->packet_frag_size;
b9866ebc 825 if(asf->stream_index < 0)
ae60a857 826 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
1359c2d4 827 continue;
bb270c08
DB
828 }
829 asf->asf_st = s->streams[asf->stream_index]->priv_data;
830 }
831 asf_st = asf->asf_st;
832
bb270c08 833 if (asf->packet_replic_size == 1) {
efc90ebf 834 // frag_offset is here used as the beginning timestamp
bb270c08
DB
835 asf->packet_frag_timestamp = asf->packet_time_start;
836 asf->packet_time_start += asf->packet_time_delta;
837 asf->packet_obj_size = asf->packet_frag_size = get_byte(pb);
838 asf->packet_size_left--;
2141dc37 839 asf->packet_multi_size--;
bb270c08
DB
840 if (asf->packet_multi_size < asf->packet_obj_size)
841 {
842 asf->packet_time_start = 0;
843 url_fskip(pb, asf->packet_multi_size);
844 asf->packet_size_left -= asf->packet_multi_size;
2141dc37 845 continue;
bb270c08
DB
846 }
847 asf->packet_multi_size -= asf->packet_obj_size;
848 //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);
849 }
60ff1c44
MN
850 if( /*asf->packet_frag_size == asf->packet_obj_size*/
851 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
852 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
853 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
854 asf_st->frag_offset, asf->packet_frag_size,
855 asf->packet_obj_size, asf_st->pkt.size);
856 asf->packet_obj_size= asf_st->pkt.size;
857 }
858
f8f0a0bd
MN
859 if ( asf_st->pkt.size != asf->packet_obj_size
860 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
200026aa
MN
861 if(asf_st->pkt.data){
862 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
863 asf_st->frag_offset = 0;
864 av_free_packet(&asf_st->pkt);
865 }
bb270c08
DB
866 /* new packet */
867 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
868 asf_st->seq = asf->packet_seq;
eb63b051 869 asf_st->pkt.dts = asf->packet_frag_timestamp;
bb270c08 870 asf_st->pkt.stream_index = asf->stream_index;
115329f1
DB
871 asf_st->pkt.pos =
872 asf_st->packet_pos= asf->packet_pos;
873//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
cc947f04 874//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & AV_PKT_FLAG_KEY,
72415b2a
SS
875//s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO, asf->packet_obj_size);
876 if (s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
bb270c08
DB
877 asf->packet_key_frame = 1;
878 if (asf->packet_key_frame)
cc947f04 879 asf_st->pkt.flags |= AV_PKT_FLAG_KEY;
bb270c08
DB
880 }
881
882 /* read data */
883 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
91d19d47 884 // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
bb270c08
DB
885 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
886 asf->packet_size_left -= asf->packet_frag_size;
887 if (asf->packet_size_left < 0)
2141dc37 888 continue;
4c71d727
MN
889
890 if( asf->packet_frag_offset >= asf_st->pkt.size
891 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
892 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
893 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
894 continue;
895 }
896
4172951b
RD
897 ret = get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
898 asf->packet_frag_size);
bf09a019
RD
899 if (ret != asf->packet_frag_size) {
900 if (ret < 0 || asf->packet_frag_offset + ret == 0)
901 return ret < 0 ? ret : AVERROR_EOF;
902 if (asf_st->ds_span > 1) {
903 // scrambling, we can either drop it completely or fill the remainder
904 // TODO: should we fill the whole packet instead of just the current
905 // fragment?
906 memset(asf_st->pkt.data + asf->packet_frag_offset + ret, 0,
907 asf->packet_frag_size - ret);
908 ret = asf->packet_frag_size;
909 } else
910 // no scrambling, so we can return partial packets
911 av_shrink_packet(&asf_st->pkt, asf->packet_frag_offset + ret);
912 }
72be7db4
RD
913 if (s->key && s->keylen == 20)
914 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
bf09a019
RD
915 ret);
916 asf_st->frag_offset += ret;
bb270c08
DB
917 /* test if whole packet is read */
918 if (asf_st->frag_offset == asf_st->pkt.size) {
da0b94f5
MN
919 //workaround for macroshit radio DVR-MS files
920 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
921 && asf_st->pkt.size > 100){
922 int i;
923 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
924 if(i == asf_st->pkt.size){
925 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
926 asf_st->frag_offset = 0;
927 av_free_packet(&asf_st->pkt);
928 continue;
929 }
930 }
931
bb270c08
DB
932 /* return packet */
933 if (asf_st->ds_span > 1) {
05219463 934 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
b43387d4 935 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 936 }else{
bb270c08 937 /* packet descrambling */
3c3ef81b 938 uint8_t *newdata = av_malloc(asf_st->pkt.size + FF_INPUT_BUFFER_PADDING_SIZE);
bb270c08
DB
939 if (newdata) {
940 int offset = 0;
3c3ef81b 941 memset(newdata + asf_st->pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
bb270c08
DB
942 while (offset < asf_st->pkt.size) {
943 int off = offset / asf_st->ds_chunk_size;
944 int row = off / asf_st->ds_span;
945 int col = off % asf_st->ds_span;
946 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
947 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
05219463
MN
948
949 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
950 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
bb270c08
DB
951 memcpy(newdata + offset,
952 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
953 asf_st->ds_chunk_size);
954 offset += asf_st->ds_chunk_size;
955 }
956 av_free(asf_st->pkt.data);
957 asf_st->pkt.data = newdata;
958 }
05219463 959 }
bb270c08
DB
960 }
961 asf_st->frag_offset = 0;
b83e83b9 962 *pkt= asf_st->pkt;
bb270c08
DB
963 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
964 asf_st->pkt.size = 0;
965 asf_st->pkt.data = 0;
966 break; // packet completed
967 }
de6d9b64 968 }
de6d9b64
FB
969 return 0;
970}
971
f27544fd
RB
972static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
973{
974 ASFContext *asf = s->priv_data;
975
976 for (;;) {
977 int ret;
978
979 /* parse cached packets, if any */
1d217cdb 980 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
f27544fd 981 return ret;
1d217cdb 982 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
f27544fd
RB
983 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
984 asf->packet_time_start = 0;
985 }
986
987 return 0;
988}
989
38376f00
KK
990// Added to support seeking after packets have been read
991// If information is not reset, read_packet fails due to
992// leftover information from previous reads
993static void asf_reset_header(AVFormatContext *s)
994{
995 ASFContext *asf = s->priv_data;
82b9e4a2
MN
996 ASFStream *asf_st;
997 int i;
38376f00
KK
998
999 asf->packet_nb_frames = 0;
38376f00
KK
1000 asf->packet_size_left = 0;
1001 asf->packet_segments = 0;
1002 asf->packet_flags = 0;
1003 asf->packet_property = 0;
1004 asf->packet_timestamp = 0;
1005 asf->packet_segsizetype = 0;
1006 asf->packet_segments = 0;
1007 asf->packet_seq = 0;
1008 asf->packet_replic_size = 0;
1009 asf->packet_key_frame = 0;
1010 asf->packet_padsize = 0;
1011 asf->packet_frag_offset = 0;
1012 asf->packet_frag_size = 0;
1013 asf->packet_frag_timestamp = 0;
1014 asf->packet_multi_size = 0;
1015 asf->packet_obj_size = 0;
1016 asf->packet_time_delta = 0;
1017 asf->packet_time_start = 0;
115329f1 1018
82b9e4a2
MN
1019 for(i=0; i<s->nb_streams; i++){
1020 asf_st= s->streams[i]->priv_data;
1021 av_free_packet(&asf_st->pkt);
1022 asf_st->frag_offset=0;
1023 asf_st->seq=0;
1024 }
1025 asf->asf_st= NULL;
38376f00
KK
1026}
1027
5d25d2a9
DB
1028static int asf_read_close(AVFormatContext *s)
1029{
1030 int i;
1031
1032 asf_reset_header(s);
1033 for(i=0;i<s->nb_streams;i++) {
1034 AVStream *st = s->streams[i];
5d25d2a9
DB
1035 av_free(st->codec->palctrl);
1036 }
1037 return 0;
1038}
1039
8d14a25c 1040static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
38376f00 1041{
38376f00 1042 AVPacket pkt1, *pkt = &pkt1;
82b9e4a2 1043 ASFStream *asf_st;
580fb5e7 1044 int64_t pts;
82b9e4a2 1045 int64_t pos= *ppos;
3e9245a9 1046 int i;
30cdfb49 1047 int64_t start_pos[ASF_MAX_STREAMS];
115329f1 1048
3e9245a9
MN
1049 for(i=0; i<s->nb_streams; i++){
1050 start_pos[i]= pos;
1051 }
115329f1 1052
68a10b40 1053 if (s->packet_size > 0)
b098b309 1054 pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
8d14a25c 1055 *ppos= pos;
899681cd 1056 url_fseek(s->pb, pos, SEEK_SET);
115329f1 1057
82b9e4a2 1058//printf("asf_read_pts\n");
82b9e4a2 1059 asf_reset_header(s);
3e9245a9 1060 for(;;){
82b9e4a2 1061 if (av_read_frame(s, pkt) < 0){
0b93103a 1062 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
bb270c08 1063 return AV_NOPTS_VALUE;
82b9e4a2 1064 }
115329f1 1065
38cf2a72 1066 pts= pkt->pts;
580fb5e7
MN
1067
1068 av_free_packet(pkt);
cc947f04 1069 if(pkt->flags&AV_PKT_FLAG_KEY){
3e9245a9
MN
1070 i= pkt->stream_index;
1071
1072 asf_st= s->streams[i]->priv_data;
1073
91d19d47 1074// assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
8d14a25c 1075 pos= asf_st->packet_pos;
09646bab 1076
52e54612 1077 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
8d14a25c 1078 start_pos[i]= asf_st->packet_pos + 1;
115329f1 1079
3e9245a9
MN
1080 if(pkt->stream_index == stream_index)
1081 break;
1082 }
1083 }
1084
1085 *ppos= pos;
949b1a13 1086//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
580fb5e7
MN
1087
1088 return pts;
38376f00
KK
1089}
1090
56c96a22
MN
1091static void asf_build_simple_index(AVFormatContext *s, int stream_index)
1092{
b8b00d94 1093 ff_asf_guid g;
56c96a22 1094 ASFContext *asf = s->priv_data;
d728e3cd 1095 int64_t current_pos= url_ftell(s->pb);
56c96a22 1096 int i;
56c96a22 1097
899681cd 1098 url_fseek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
a750050f 1099 ff_get_guid(s->pb, &g);
77b7c334
SG
1100
1101 /* the data object can be followed by other top-level objects,
1102 skip them until the simple index object is reached */
a750050f 1103 while (ff_guidcmp(&g, &index_guid)) {
77b7c334
SG
1104 int64_t gsize= get_le64(s->pb);
1105 if (gsize < 24 || url_feof(s->pb)) {
1106 url_fseek(s->pb, current_pos, SEEK_SET);
1107 return;
1108 }
1109 url_fseek(s->pb, gsize-24, SEEK_CUR);
a750050f 1110 ff_get_guid(s->pb, &g);
77b7c334
SG
1111 }
1112
1113 {
134271c2 1114 int64_t itime, last_pos=-1;
d728e3cd 1115 int pct, ict;
dc1ed614 1116 int64_t av_unused gsize= get_le64(s->pb);
a750050f 1117 ff_get_guid(s->pb, &g);
899681cd
BA
1118 itime=get_le64(s->pb);
1119 pct=get_le32(s->pb);
1120 ict=get_le32(s->pb);
871e62e5 1121 av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
56c96a22
MN
1122
1123 for (i=0;i<ict;i++){
899681cd
BA
1124 int pktnum=get_le32(s->pb);
1125 int pktct =get_le16(s->pb);
91d19d47 1126 int64_t pos = s->data_offset + s->packet_size*(int64_t)pktnum;
d728e3cd 1127 int64_t index_pts= av_rescale(itime, i, 10000);
56c96a22 1128
134271c2 1129 if(pos != last_pos){
d728e3cd 1130 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct);
91d19d47 1131 av_add_index_entry(s->streams[stream_index], pos, index_pts, s->packet_size, 0, AVINDEX_KEYFRAME);
134271c2
MN
1132 last_pos=pos;
1133 }
56c96a22 1134 }
52e54612 1135 asf->index_read= 1;
56c96a22 1136 }
899681cd 1137 url_fseek(s->pb, current_pos, SEEK_SET);
56c96a22
MN
1138}
1139
3ba1438d 1140static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
2a10020b 1141{
afda223c 1142 ASFContext *asf = s->priv_data;
56c96a22
MN
1143 AVStream *st = s->streams[stream_index];
1144 int64_t pos;
1145 int index;
115329f1 1146
91d19d47 1147 if (s->packet_size <= 0)
38376f00
KK
1148 return -1;
1149
fa13095a 1150 /* Try using the protocol's read_seek if available */
fd2982a0 1151 if(s->pb) {
fa13095a
BA
1152 int ret = av_url_read_fseek(s->pb, stream_index, pts, flags);
1153 if(ret >= 0)
1154 asf_reset_header(s);
fd2982a0 1155 if (ret != AVERROR(ENOSYS))
cd31f8dc 1156 return ret;
fa13095a
BA
1157 }
1158
52e54612 1159 if (!asf->index_read)
56c96a22
MN
1160 asf_build_simple_index(s, stream_index);
1161
52e54612 1162 if(!(asf->index_read && st->index_entries)){
56c96a22
MN
1163 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
1164 return -1;
1165 }else{
1166 index= av_index_search_timestamp(st, pts, flags);
1167 if(index<0)
1168 return -1;
1169
1170 /* find the position */
1171 pos = st->index_entries[index].pos;
56c96a22
MN
1172
1173 // various attempts to find key frame have failed so far
1174 // asf_reset_header(s);
899681cd 1175 // url_fseek(s->pb, pos, SEEK_SET);
56c96a22
MN
1176 // key_pos = pos;
1177 // for(i=0;i<16;i++){
899681cd 1178 // pos = url_ftell(s->pb);
56c96a22
MN
1179 // if (av_read_frame(s, &pkt) < 0){
1180 // av_log(s, AV_LOG_INFO, "seek failed\n");
1181 // return -1;
1182 // }
1183 // asf_st = s->streams[stream_index]->priv_data;
1184 // pos += st->parser->frame_offset;
1185 //
1186 // if (pkt.size > b) {
1187 // b = pkt.size;
1188 // key_pos = pos;
1189 // }
1190 //
1191 // av_free_packet(&pkt);
1192 // }
1193
1194 /* do the seek */
871e62e5 1195 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
899681cd 1196 url_fseek(s->pb, pos, SEEK_SET);
56c96a22 1197 }
38376f00
KK
1198 asf_reset_header(s);
1199 return 0;
2a10020b
ZK
1200}
1201
c6610a21 1202AVInputFormat ff_asf_demuxer = {
c9a65ca8 1203 "asf",
bde15e74 1204 NULL_IF_CONFIG_SMALL("ASF format"),
c9a65ca8
FB
1205 sizeof(ASFContext),
1206 asf_probe,
1207 asf_read_header,
1208 asf_read_packet,
1209 asf_read_close,
2a10020b 1210 asf_read_seek,
8d14a25c 1211 asf_read_pts,
c9a65ca8 1212};