Don't add WM prefixes to all written ASF tags.
[libav.git] / libavformat / asfdec.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
19720f15
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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 */
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
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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;
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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));
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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{
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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
6538c0f1 164 if (type == 0) { // UTF16-LE
12ad6671 165 get_str16_nolen(s->pb, len, value, len);
6538c0f1 166 } else if (type > 1 && type <= 5) { // boolean or DWORD or QWORD or WORD
20e2a7ae 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);
47794b9d 171 av_freep(&value);
27e74927 172 av_log(s, AV_LOG_DEBUG, "Unsupported value type %d in tag %s.\n", type, key);
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173 return;
174 }
be039510 175 if (!strncmp(key, "WM/", 3))
20e2a7ae 176 key += 3;
12ad6671 177 av_metadata_set2(&s->metadata, key, value, AV_METADATA_DONT_STRDUP_VAL);
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178}
179
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180static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
181{
c9a65ca8 182 ASFContext *asf = s->priv_data;
b8b00d94 183 ff_asf_guid g;
899681cd 184 ByteIOContext *pb = s->pb;
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185 AVStream *st;
186 ASFStream *asf_st;
e095026a 187 int size, i;
0c1a9eda 188 int64_t gsize;
30e88789 189 AVRational dar[128];
d8470737 190 uint32_t bitrate[128];
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191
192 memset(dar, 0, sizeof(dar));
d8470737 193 memset(bitrate, 0, sizeof(bitrate));
de6d9b64 194
de6d9b64 195 get_guid(pb, &g);
4d0c3dc0 196 if (guidcmp(&g, &ff_asf_header))
ccafd472 197 return -1;
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198 get_le64(pb);
199 get_le32(pb);
200 get_byte(pb);
201 get_byte(pb);
2141dc37 202 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
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203 for(;;) {
204 get_guid(pb, &g);
205 gsize = get_le64(pb);
f94981ea 206 dprintf(s, "%08"PRIx64": ", url_ftell(pb) - 24);
de6d9b64 207 print_guid(&g);
f94981ea 208 dprintf(s, " size=0x%"PRIx64"\n", gsize);
4d0c3dc0 209 if (!guidcmp(&g, &ff_asf_data_header)) {
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210 asf->data_object_offset = url_ftell(pb);
211 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
212 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
213 asf->data_object_size = gsize - 24;
214 } else {
215 asf->data_object_size = (uint64_t)-1;
216 }
217 break;
218 }
de6d9b64 219 if (gsize < 24)
ccafd472 220 return -1;
4d0c3dc0 221 if (!guidcmp(&g, &ff_asf_file_header)) {
2a10020b 222 get_guid(pb, &asf->hdr.guid);
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DB
223 asf->hdr.file_size = get_le64(pb);
224 asf->hdr.create_time = get_le64(pb);
6bb2a2df 225 asf->nb_packets = get_le64(pb);
bb270c08 226 asf->hdr.play_time = get_le64(pb);
b4bbcd63 227 asf->hdr.send_time = get_le64(pb);
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DB
228 asf->hdr.preroll = get_le32(pb);
229 asf->hdr.ignore = get_le32(pb);
230 asf->hdr.flags = get_le32(pb);
231 asf->hdr.min_pktsize = get_le32(pb);
232 asf->hdr.max_pktsize = get_le32(pb);
233 asf->hdr.max_bitrate = get_le32(pb);
91d19d47 234 s->packet_size = asf->hdr.max_pktsize;
4d0c3dc0 235 } else if (!guidcmp(&g, &ff_asf_stream_header)) {
fb65d2ca
DP
236 enum CodecType type;
237 int type_specific_size, sizeX;
7ad5455c 238 uint64_t total_size;
de6d9b64 239 unsigned int tag1;
371bf806 240 int64_t pos1, pos2, start_time;
6fea687e 241 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
2a10020b 242
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243 pos1 = url_ftell(pb);
244
247eadca 245 st = av_new_stream(s, 0);
de6d9b64 246 if (!st)
ccafd472 247 return AVERROR(ENOMEM);
9ee91c2f 248 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
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249 asf_st = av_mallocz(sizeof(ASFStream));
250 if (!asf_st)
ccafd472 251 return AVERROR(ENOMEM);
de6d9b64 252 st->priv_data = asf_st;
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253 start_time = asf->hdr.preroll;
254
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CC
255 asf_st->stream_language_index = 128; // invalid stream index means no language info
256
73fe1052 257 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
f2086fb5 258 st->duration = asf->hdr.play_time /
371bf806 259 (10000000 / 1000) - start_time;
73fe1052 260 }
de6d9b64 261 get_guid(pb, &g);
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262
263 test_for_ext_stream_audio = 0;
4d0c3dc0 264 if (!guidcmp(&g, &ff_asf_audio_stream)) {
de6d9b64 265 type = CODEC_TYPE_AUDIO;
4d0c3dc0 266 } else if (!guidcmp(&g, &ff_asf_video_stream)) {
de6d9b64 267 type = CODEC_TYPE_VIDEO;
4d0c3dc0 268 } else if (!guidcmp(&g, &ff_asf_command_stream)) {
3e86dba2 269 type = CODEC_TYPE_DATA;
4d0c3dc0 270 } else if (!guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
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271 test_for_ext_stream_audio = 1;
272 type = CODEC_TYPE_UNKNOWN;
de6d9b64 273 } else {
ccafd472 274 return -1;
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FB
275 }
276 get_guid(pb, &g);
277 total_size = get_le64(pb);
2e7973bb 278 type_specific_size = get_le32(pb);
de6d9b64 279 get_le32(pb);
bb270c08 280 st->id = get_le16(pb) & 0x7f; /* stream id */
2a10020b 281 // mapping of asf ID to AV stream ID;
247eadca 282 asf->asfid2avid[st->id] = s->nb_streams - 1;
2a10020b 283
de6d9b64 284 get_le32(pb);
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MN
285
286 if (test_for_ext_stream_audio) {
287 get_guid(pb, &g);
4d0c3dc0 288 if (!guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
88141c91 289 type = CODEC_TYPE_AUDIO;
6fea687e 290 is_dvr_ms_audio=1;
88141c91
MN
291 get_guid(pb, &g);
292 get_le32(pb);
293 get_le32(pb);
294 get_le32(pb);
295 get_guid(pb, &g);
296 get_le32(pb);
297 }
298 }
299
bb270c08 300 st->codec->codec_type = type;
de6d9b64 301 if (type == CODEC_TYPE_AUDIO) {
1a40491e 302 ff_get_wav_header(pb, st->codec, type_specific_size);
6fea687e
JD
303 if (is_dvr_ms_audio) {
304 // codec_id and codec_tag are unreliable in dvr_ms
305 // files. Set them later by probing stream.
0bef08e5 306 st->codec->codec_id = CODEC_ID_PROBE;
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JD
307 st->codec->codec_tag = 0;
308 }
e7f73adb
AC
309 if (st->codec->codec_id == CODEC_ID_AAC) {
310 st->need_parsing = AVSTREAM_PARSE_NONE;
311 } else {
e9259f8d 312 st->need_parsing = AVSTREAM_PARSE_FULL;
e7f73adb 313 }
bb270c08
DB
314 /* We have to init the frame size at some point .... */
315 pos2 = url_ftell(pb);
b9c6d01b 316 if (gsize >= (pos2 + 8 - pos1 + 24)) {
bb270c08
DB
317 asf_st->ds_span = get_byte(pb);
318 asf_st->ds_packet_size = get_le16(pb);
319 asf_st->ds_chunk_size = get_le16(pb);
6bb2a2df
MN
320 get_le16(pb); //ds_data_size
321 get_byte(pb); //ds_silence_data
bb270c08
DB
322 }
323 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
324 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
325 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
326 if (asf_st->ds_span > 1) {
327 if (!asf_st->ds_chunk_size
05219463
MN
328 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
329 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
bb270c08
DB
330 asf_st->ds_span = 0; // disable descrambling
331 }
01f4895c 332 switch (st->codec->codec_id) {
80783dc2 333 case CODEC_ID_MP3:
01f4895c 334 st->codec->frame_size = MPA_FRAME_SIZE;
f80c1ac0
PG
335 break;
336 case CODEC_ID_PCM_S16LE:
337 case CODEC_ID_PCM_S16BE:
338 case CODEC_ID_PCM_U16LE:
339 case CODEC_ID_PCM_U16BE:
340 case CODEC_ID_PCM_S8:
341 case CODEC_ID_PCM_U8:
342 case CODEC_ID_PCM_ALAW:
343 case CODEC_ID_PCM_MULAW:
01f4895c 344 st->codec->frame_size = 1;
f80c1ac0
PG
345 break;
346 default:
347 /* This is probably wrong, but it prevents a crash later */
01f4895c 348 st->codec->frame_size = 1;
f80c1ac0
PG
349 break;
350 }
88141c91 351 } else if (type == CODEC_TYPE_VIDEO) {
bb270c08 352 get_le32(pb);
de6d9b64
FB
353 get_le32(pb);
354 get_byte(pb);
355 size = get_le16(pb); /* size */
0ffd77b9 356 sizeX= get_le32(pb); /* size */
01f4895c 357 st->codec->width = get_le32(pb);
bb270c08 358 st->codec->height = get_le32(pb);
2a10020b 359 /* not available for asf */
de6d9b64 360 get_le16(pb); /* panes */
dd1c8f3e 361 st->codec->bits_per_coded_sample = get_le16(pb); /* depth */
de6d9b64 362 tag1 = get_le32(pb);
bb270c08 363 url_fskip(pb, 20);
871e62e5 364// av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
0ffd77b9 365 size= sizeX;
bb270c08
DB
366 if (size > 40) {
367 st->codec->extradata_size = size - 40;
368 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
369 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
370 }
5e29abf8 371
6d050dd6 372 /* Extract palette from extradata if bpp <= 8 */
373 /* This code assumes that extradata contains only palette */
374 /* This is true for all paletted codecs implemented in ffmpeg */
375 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
376 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
63613fe6 377#if HAVE_BIGENDIAN
6d050dd6 378 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
379 st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
5e29abf8 380#else
6d050dd6 381 memcpy(st->codec->palctrl->palette, st->codec->extradata,
382 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
5e29abf8 383#endif
6d050dd6 384 st->codec->palctrl->palette_changed = 1;
385 }
5e29abf8 386
01f4895c 387 st->codec->codec_tag = tag1;
1a40491e 388 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
afbb5ce4 389 if(tag1 == MKTAG('D', 'V', 'R', ' '))
57004ff1 390 st->need_parsing = AVSTREAM_PARSE_FULL;
de6d9b64
FB
391 }
392 pos2 = url_ftell(pb);
393 url_fskip(pb, gsize - (pos2 - pos1 + 24));
4d0c3dc0 394 } else if (!guidcmp(&g, &ff_asf_comment_header)) {
de6d9b64
FB
395 int len1, len2, len3, len4, len5;
396
397 len1 = get_le16(pb);
398 len2 = get_le16(pb);
399 len3 = get_le16(pb);
400 len4 = get_le16(pb);
401 len5 = get_le16(pb);
20e2a7ae
AJ
402 get_tag(s, "title" , 0, len1);
403 get_tag(s, "author" , 0, len2);
404 get_tag(s, "copyright", 0, len3);
405 get_tag(s, "comment" , 0, len4);
bb270c08 406 url_fskip(pb, len5);
4d0c3dc0 407 } else if (!guidcmp(&g, &stream_bitrate_guid)) {
0e3b6a6f
RM
408 int stream_count = get_le16(pb);
409 int j;
410
871e62e5
BF
411// av_log(s, AV_LOG_ERROR, "stream bitrate properties\n");
412// av_log(s, AV_LOG_ERROR, "streams %d\n", streams);
0e3b6a6f
RM
413 for(j = 0; j < stream_count; j++) {
414 int flags, bitrate, stream_id;
415
416 flags= get_le16(pb);
417 bitrate= get_le32(pb);
418 stream_id= (flags & 0x7f);
871e62e5 419// av_log(s, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate);
a9054d91 420 asf->stream_bitrates[stream_id]= bitrate;
0e3b6a6f 421 }
5f1ac36d
CC
422 } else if (!guidcmp(&g, &ff_asf_language_guid)) {
423 int j;
424 int stream_count = get_le16(pb);
425 for(j = 0; j < stream_count; j++) {
426 char lang[6];
427 unsigned int lang_len = get_byte(pb);
428 get_str16_nolen(pb, lang_len, lang, sizeof(lang));
429 if (j < 128)
430 av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
431 }
4d0c3dc0 432 } else if (!guidcmp(&g, &ff_asf_extended_content_header)) {
6d050dd6 433 int desc_count, i;
434
435 desc_count = get_le16(pb);
436 for(i=0;i<desc_count;i++) {
437 int name_len,value_type,value_len;
438 char name[1024];
439
440 name_len = get_le16(pb);
4a3104a9
AK
441 if (name_len%2) // must be even, broken lavf versions wrote len-1
442 name_len += 1;
6d050dd6 443 get_str16_nolen(pb, name_len, name, sizeof(name));
444 value_type = get_le16(pb);
445 value_len = get_le16(pb);
514b73cf 446 if (!value_type && value_len%2)
4a3104a9 447 value_len += 1;
6d050dd6 448 get_tag(s, name, value_type, value_len);
449 }
4d0c3dc0 450 } else if (!guidcmp(&g, &ff_asf_metadata_header)) {
30e88789
MN
451 int n, stream_num, name_len, value_len, value_type, value_num;
452 n = get_le16(pb);
453
454 for(i=0;i<n;i++) {
455 char name[1024];
456
457 get_le16(pb); //lang_list_index
458 stream_num= get_le16(pb);
459 name_len= get_le16(pb);
460 value_type= get_le16(pb);
461 value_len= get_le32(pb);
462
463 get_str16_nolen(pb, name_len, name, sizeof(name));
871e62e5 464//av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
755bfeab 465 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
466 url_fskip(pb, value_len - 2);
467
468 if(stream_num<128){
469 if (!strcmp(name, "AspectRatioX")) dar[stream_num].num= value_num;
470 else if(!strcmp(name, "AspectRatioY")) dar[stream_num].den= value_num;
471 }
472 }
4d0c3dc0 473 } else if (!guidcmp(&g, &ff_asf_ext_stream_header)) {
88141c91 474 int ext_len, payload_ext_ct, stream_ct;
d8470737 475 uint32_t ext_d, leak_rate, stream_num;
5f1ac36d 476 unsigned int stream_languageid_index;
88141c91 477
de3ae959
MN
478 get_le64(pb); // starttime
479 get_le64(pb); // endtime
d8470737 480 leak_rate = get_le32(pb); // leak-datarate
de3ae959
MN
481 get_le32(pb); // bucket-datasize
482 get_le32(pb); // init-bucket-fullness
483 get_le32(pb); // alt-leak-datarate
484 get_le32(pb); // alt-bucket-datasize
485 get_le32(pb); // alt-init-bucket-fullness
486 get_le32(pb); // max-object-size
487 get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
d8470737 488 stream_num = get_le16(pb); // stream-num
5f1ac36d
CC
489
490 stream_languageid_index = get_le16(pb); // stream-language-id-index
491 if (stream_num < 128)
492 asf->streams[stream_num].stream_language_index = stream_languageid_index;
493
de3ae959
MN
494 get_le64(pb); // avg frametime in 100ns units
495 stream_ct = get_le16(pb); //stream-name-count
496 payload_ext_ct = get_le16(pb); //payload-extension-system-count
88141c91 497
d8470737
ZM
498 if (stream_num < 128)
499 bitrate[stream_num] = leak_rate;
500
88141c91
MN
501 for (i=0; i<stream_ct; i++){
502 get_le16(pb);
503 ext_len = get_le16(pb);
504 url_fseek(pb, ext_len, SEEK_CUR);
505 }
506
507 for (i=0; i<payload_ext_ct; i++){
508 get_guid(pb, &g);
509 ext_d=get_le16(pb);
510 ext_len=get_le32(pb);
511 url_fseek(pb, ext_len, SEEK_CUR);
512 }
513
514 // there could be a optional stream properties object to follow
515 // if so the next iteration will pick it up
4d0c3dc0 516 } else if (!guidcmp(&g, &ff_asf_head1_guid)) {
de6d9b64
FB
517 int v1, v2;
518 get_guid(pb, &g);
519 v1 = get_le32(pb);
520 v2 = get_le16(pb);
88141c91 521#if 0
4d0c3dc0 522 } else if (!guidcmp(&g, &ff_asf_codec_comment_header)) {
de6d9b64
FB
523 int len, v1, n, num;
524 char str[256], *q;
525 char tag[16];
526
527 get_guid(pb, &g);
528 print_guid(&g);
2a10020b 529
de6d9b64
FB
530 n = get_le32(pb);
531 for(i=0;i<n;i++) {
532 num = get_le16(pb); /* stream number */
533 get_str16(pb, str, sizeof(str));
534 get_str16(pb, str, sizeof(str));
535 len = get_le16(pb);
536 q = tag;
537 while (len > 0) {
538 v1 = get_byte(pb);
539 if ((q - tag) < sizeof(tag) - 1)
540 *q++ = v1;
541 len--;
542 }
543 *q = '\0';
544 }
545#endif
546 } else if (url_feof(pb)) {
ccafd472 547 return -1;
de6d9b64 548 } else {
febd1c90
DT
549 if (!s->keylen) {
550 if (!guidcmp(&g, &ff_asf_content_encryption)) {
551 av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
552 } else if (!guidcmp(&g, &ff_asf_ext_content_encryption)) {
553 av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
554 } else if (!guidcmp(&g, &ff_asf_digital_signature)) {
555 av_log(s, AV_LOG_WARNING, "Digital signature detected, decoding will likely fail!\n");
556 }
557 }
de6d9b64
FB
558 url_fseek(pb, gsize - 24, SEEK_CUR);
559 }
560 }
561 get_guid(pb, &g);
562 get_le64(pb);
563 get_byte(pb);
564 get_byte(pb);
2141dc37 565 if (url_feof(pb))
ccafd472 566 return -1;
2141dc37 567 asf->data_offset = url_ftell(pb);
de6d9b64
FB
568 asf->packet_size_left = 0;
569
30e88789
MN
570
571 for(i=0; i<128; i++){
572 int stream_num= asf->asfid2avid[i];
d8470737 573 if(stream_num>=0){
59729451
AJ
574 AVStream *st = s->streams[stream_num];
575 if (!st->codec->bit_rate)
576 st->codec->bit_rate = bitrate[i];
d8470737 577 if (dar[i].num > 0 && dar[i].den > 0)
59729451
AJ
578 av_reduce(&st->sample_aspect_ratio.num,
579 &st->sample_aspect_ratio.den,
18d915dd 580 dar[i].num, dar[i].den, INT_MAX);
871e62e5 581//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
582
583 // copy and convert language codes to the frontend
584 if (asf->streams[i].stream_language_index < 128) {
585 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
586 if (rfc1766 && strlen(rfc1766) > 1) {
587 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
588 const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
589 if (iso6392)
590 av_metadata_set(&st->metadata, "language", iso6392);
591 }
592 }
30e88789
MN
593 }
594 }
595
de6d9b64 596 return 0;
de6d9b64
FB
597}
598
2a10020b
ZK
599#define DO_2BITS(bits, var, defval) \
600 switch (bits & 3) \
601 { \
602 case 3: var = get_le32(pb); rsize += 4; break; \
603 case 2: var = get_le16(pb); rsize += 2; break; \
604 case 1: var = get_byte(pb); rsize++; break; \
605 default: var = defval; break; \
606 }
607
277a28e8
RB
608/**
609 * Load a single ASF packet into the demuxer.
610 * @param s demux context
611 * @param pb context to read data from
612 * @returns 0 on success, <0 on error
613 */
614static int ff_asf_get_packet(AVFormatContext *s, ByteIOContext *pb)
de6d9b64
FB
615{
616 ASFContext *asf = s->priv_data;
2a10020b 617 uint32_t packet_length, padsize;
0c0d17f3 618 int rsize = 8;
0fd9e6f3
MN
619 int c, d, e, off;
620
68a10b40
RD
621 // if we do not know packet size, allow skipping up to 32 kB
622 off= 32768;
623 if (s->packet_size > 0)
b098b309 624 off= (url_ftell(pb) - s->data_offset) % s->packet_size + 3;
0fd9e6f3
MN
625
626 c=d=e=-1;
627 while(off-- > 0){
628 c=d; d=e;
629 e= get_byte(pb);
630 if(c == 0x82 && !d && !e)
631 break;
632 }
115329f1 633
1359c2d4 634 if (c != 0x82) {
2078ca16
RB
635 /**
636 * This code allows handling of -EAGAIN at packet boundaries (i.e.
637 * if the packet sync code above triggers -EAGAIN). This does not
638 * imply complete -EAGAIN handling support at random positions in
639 * the stream.
640 */
641 if (url_ferror(pb) == AVERROR(EAGAIN))
642 return AVERROR(EAGAIN);
5acdd6e6 643 if (!url_feof(pb))
bb270c08 644 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
2a10020b 645 }
0c0d17f3 646 if ((c & 0x8f) == 0x82) {
0fd9e6f3 647 if (d || e) {
5acdd6e6 648 if (!url_feof(pb))
bb270c08 649 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
f7835507 650 return -1;
bb270c08 651 }
0c0d17f3 652 c= get_byte(pb);
0fd9e6f3 653 d= get_byte(pb);
0c0d17f3
MN
654 rsize+=3;
655 }else{
656 url_fseek(pb, -1, SEEK_CUR); //FIXME
de6d9b64 657 }
2a10020b 658
0c0d17f3
MN
659 asf->packet_flags = c;
660 asf->packet_property = d;
2a10020b 661
91d19d47 662 DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
2a10020b
ZK
663 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
664 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
665
5b11e081 666 //the following checks prevent overflows and infinite loops
96f0731a 667 if(!packet_length || packet_length >= (1U<<29)){
5b11e081 668 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb));
ceba96cb 669 return -1;
5b11e081 670 }
92216453 671 if(padsize >= packet_length){
5b11e081 672 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, url_ftell(pb));
ceba96cb 673 return -1;
5b11e081
MN
674 }
675
2a10020b 676 asf->packet_timestamp = get_le32(pb);
de6d9b64 677 get_le16(pb); /* duration */
2141dc37 678 // rsize has at least 11 bytes which have to be present
2a10020b
ZK
679
680 if (asf->packet_flags & 0x01) {
bb270c08 681 asf->packet_segsizetype = get_byte(pb); rsize++;
2a10020b
ZK
682 asf->packet_segments = asf->packet_segsizetype & 0x3f;
683 } else {
bb270c08 684 asf->packet_segments = 1;
2a10020b
ZK
685 asf->packet_segsizetype = 0x80;
686 }
687 asf->packet_size_left = packet_length - padsize - rsize;
acbe6cfa
ZK
688 if (packet_length < asf->hdr.min_pktsize)
689 padsize += asf->hdr.min_pktsize - packet_length;
2a10020b 690 asf->packet_padsize = padsize;
91d19d47 691 dprintf(s, "packet: size=%d padsize=%d left=%d\n", s->packet_size, asf->packet_padsize, asf->packet_size_left);
de6d9b64
FB
692 return 0;
693}
694
ae60a857
MN
695/**
696 *
697 * @return <0 if error
698 */
d7fb5a18 699static int asf_read_frame_header(AVFormatContext *s, ByteIOContext *pb){
ae60a857 700 ASFContext *asf = s->priv_data;
ae60a857
MN
701 int rsize = 1;
702 int num = get_byte(pb);
559a55ad 703 int64_t ts0, ts1;
ae60a857
MN
704
705 asf->packet_segments--;
706 asf->packet_key_frame = num >> 7;
707 asf->stream_index = asf->asfid2avid[num & 0x7f];
708 // sequence should be ignored!
709 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
710 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
711 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
712//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);
713 if (asf->packet_replic_size >= 8) {
714 asf->packet_obj_size = get_le32(pb);
715 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
716 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
717 return -1;
718 }
719 asf->packet_frag_timestamp = get_le32(pb); // timestamp
559a55ad
MN
720 if(asf->packet_replic_size >= 8+38+4){
721// for(i=0; i<asf->packet_replic_size-8; i++)
722// av_log(s, AV_LOG_DEBUG, "%02X ",get_byte(pb));
723// av_log(s, AV_LOG_DEBUG, "\n");
724 url_fskip(pb, 10);
725 ts0= get_le64(pb);
726 ts1= get_le64(pb);
727 url_fskip(pb, 12);
728 get_le32(pb);
729 url_fskip(pb, asf->packet_replic_size - 8 - 38 - 4);
730 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
731 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
732 }else
733 url_fskip(pb, asf->packet_replic_size - 8);
ae60a857
MN
734 rsize += asf->packet_replic_size; // FIXME - check validity
735 } else if (asf->packet_replic_size==1){
efc90ebf 736 // multipacket - frag_offset is beginning timestamp
ae60a857
MN
737 asf->packet_time_start = asf->packet_frag_offset;
738 asf->packet_frag_offset = 0;
739 asf->packet_frag_timestamp = asf->packet_timestamp;
740
741 asf->packet_time_delta = get_byte(pb);
742 rsize++;
743 }else if(asf->packet_replic_size!=0){
744 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
745 return -1;
746 }
747 if (asf->packet_flags & 0x01) {
748 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
13f7e4b9
MN
749 if(asf->packet_frag_size > asf->packet_size_left - rsize){
750 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n");
751 return -1;
752 }
ae60a857
MN
753 //printf("Fragsize %d\n", asf->packet_frag_size);
754 } else {
755 asf->packet_frag_size = asf->packet_size_left - rsize;
756 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
757 }
758 if (asf->packet_replic_size == 1) {
759 asf->packet_multi_size = asf->packet_frag_size;
760 if (asf->packet_multi_size > asf->packet_size_left)
761 return -1;
762 }
763 asf->packet_size_left -= rsize;
764 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
765
766 return 0;
767}
768
277a28e8
RB
769/**
770 * Parse data from individual ASF packets (which were previously loaded
771 * with asf_get_packet()).
772 * @param s demux context
773 * @param pb context to read data from
774 * @param pkt pointer to store packet data into
775 * @returns 0 if data was stored in pkt, <0 on error or 1 if more ASF
776 * packets need to be loaded (through asf_get_packet())
777 */
778static int ff_asf_parse_packet(AVFormatContext *s, ByteIOContext *pb, AVPacket *pkt)
de6d9b64
FB
779{
780 ASFContext *asf = s->priv_data;
2a10020b 781 ASFStream *asf_st = 0;
2a10020b 782 for (;;) {
ceba96cb 783 if(url_feof(pb))
799a0722 784 return AVERROR_EOF;
bb270c08
DB
785 if (asf->packet_size_left < FRAME_HEADER_SIZE
786 || asf->packet_segments < 1) {
787 //asf->packet_size_left <= asf->packet_padsize) {
788 int ret = asf->packet_size_left + asf->packet_padsize;
949b1a13 789 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
5b11e081 790 assert(ret>=0);
bb270c08
DB
791 /* fail safe */
792 url_fskip(pb, ret);
b04d5d31 793
022f0b7c 794 asf->packet_pos= url_ftell(pb);
b6eaae39
KED
795 if (asf->data_object_size != (uint64_t)-1 &&
796 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
1d0036b0 797 return AVERROR_EOF; /* Do not exceed the size of the data object */
f27544fd 798 return 1;
bb270c08
DB
799 }
800 if (asf->packet_time_start == 0) {
b0d75d60 801 if(asf_read_frame_header(s, pb) < 0){
ae60a857 802 asf->packet_segments= 0;
236116cb 803 continue;
1305a9d5 804 }
bb270c08 805 if (asf->stream_index < 0
f3356e9c
MN
806 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
807 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
808 ) {
1359c2d4 809 asf->packet_time_start = 0;
bb270c08
DB
810 /* unhandled packet (should not happen) */
811 url_fskip(pb, asf->packet_frag_size);
812 asf->packet_size_left -= asf->packet_frag_size;
b9866ebc 813 if(asf->stream_index < 0)
ae60a857 814 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
1359c2d4 815 continue;
bb270c08
DB
816 }
817 asf->asf_st = s->streams[asf->stream_index]->priv_data;
818 }
819 asf_st = asf->asf_st;
820
bb270c08 821 if (asf->packet_replic_size == 1) {
efc90ebf 822 // frag_offset is here used as the beginning timestamp
bb270c08
DB
823 asf->packet_frag_timestamp = asf->packet_time_start;
824 asf->packet_time_start += asf->packet_time_delta;
825 asf->packet_obj_size = asf->packet_frag_size = get_byte(pb);
826 asf->packet_size_left--;
2141dc37 827 asf->packet_multi_size--;
bb270c08
DB
828 if (asf->packet_multi_size < asf->packet_obj_size)
829 {
830 asf->packet_time_start = 0;
831 url_fskip(pb, asf->packet_multi_size);
832 asf->packet_size_left -= asf->packet_multi_size;
2141dc37 833 continue;
bb270c08
DB
834 }
835 asf->packet_multi_size -= asf->packet_obj_size;
836 //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);
837 }
60ff1c44
MN
838 if( /*asf->packet_frag_size == asf->packet_obj_size*/
839 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
840 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
841 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
842 asf_st->frag_offset, asf->packet_frag_size,
843 asf->packet_obj_size, asf_st->pkt.size);
844 asf->packet_obj_size= asf_st->pkt.size;
845 }
846
f8f0a0bd
MN
847 if ( asf_st->pkt.size != asf->packet_obj_size
848 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
200026aa
MN
849 if(asf_st->pkt.data){
850 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
851 asf_st->frag_offset = 0;
852 av_free_packet(&asf_st->pkt);
853 }
bb270c08
DB
854 /* new packet */
855 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
856 asf_st->seq = asf->packet_seq;
eb63b051 857 asf_st->pkt.dts = asf->packet_frag_timestamp;
bb270c08 858 asf_st->pkt.stream_index = asf->stream_index;
115329f1
DB
859 asf_st->pkt.pos =
860 asf_st->packet_pos= asf->packet_pos;
861//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
82b9e4a2 862//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY,
01f4895c 863//s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size);
bb270c08
DB
864 if (s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO)
865 asf->packet_key_frame = 1;
866 if (asf->packet_key_frame)
867 asf_st->pkt.flags |= PKT_FLAG_KEY;
868 }
869
870 /* read data */
871 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
91d19d47 872 // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
bb270c08
DB
873 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
874 asf->packet_size_left -= asf->packet_frag_size;
875 if (asf->packet_size_left < 0)
2141dc37 876 continue;
4c71d727
MN
877
878 if( asf->packet_frag_offset >= asf_st->pkt.size
879 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
880 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
881 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
882 continue;
883 }
884
bb270c08
DB
885 get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
886 asf->packet_frag_size);
72be7db4
RD
887 if (s->key && s->keylen == 20)
888 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
889 asf->packet_frag_size);
bb270c08
DB
890 asf_st->frag_offset += asf->packet_frag_size;
891 /* test if whole packet is read */
892 if (asf_st->frag_offset == asf_st->pkt.size) {
da0b94f5
MN
893 //workaround for macroshit radio DVR-MS files
894 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
895 && asf_st->pkt.size > 100){
896 int i;
897 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
898 if(i == asf_st->pkt.size){
899 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
900 asf_st->frag_offset = 0;
901 av_free_packet(&asf_st->pkt);
902 continue;
903 }
904 }
905
bb270c08
DB
906 /* return packet */
907 if (asf_st->ds_span > 1) {
05219463 908 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
b43387d4 909 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 910 }else{
bb270c08 911 /* packet descrambling */
191e8ca7 912 uint8_t *newdata = av_malloc(asf_st->pkt.size);
bb270c08
DB
913 if (newdata) {
914 int offset = 0;
915 while (offset < asf_st->pkt.size) {
916 int off = offset / asf_st->ds_chunk_size;
917 int row = off / asf_st->ds_span;
918 int col = off % asf_st->ds_span;
919 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
920 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
05219463
MN
921
922 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
923 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
bb270c08
DB
924 memcpy(newdata + offset,
925 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
926 asf_st->ds_chunk_size);
927 offset += asf_st->ds_chunk_size;
928 }
929 av_free(asf_st->pkt.data);
930 asf_st->pkt.data = newdata;
931 }
05219463 932 }
bb270c08
DB
933 }
934 asf_st->frag_offset = 0;
b83e83b9 935 *pkt= asf_st->pkt;
bb270c08
DB
936 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
937 asf_st->pkt.size = 0;
938 asf_st->pkt.data = 0;
939 break; // packet completed
940 }
de6d9b64 941 }
de6d9b64
FB
942 return 0;
943}
944
f27544fd
RB
945static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
946{
947 ASFContext *asf = s->priv_data;
948
949 for (;;) {
950 int ret;
951
952 /* parse cached packets, if any */
1d217cdb 953 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
f27544fd 954 return ret;
1d217cdb 955 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
f27544fd
RB
956 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
957 asf->packet_time_start = 0;
958 }
959
960 return 0;
961}
962
38376f00
KK
963// Added to support seeking after packets have been read
964// If information is not reset, read_packet fails due to
965// leftover information from previous reads
966static void asf_reset_header(AVFormatContext *s)
967{
968 ASFContext *asf = s->priv_data;
82b9e4a2
MN
969 ASFStream *asf_st;
970 int i;
38376f00
KK
971
972 asf->packet_nb_frames = 0;
38376f00
KK
973 asf->packet_size_left = 0;
974 asf->packet_segments = 0;
975 asf->packet_flags = 0;
976 asf->packet_property = 0;
977 asf->packet_timestamp = 0;
978 asf->packet_segsizetype = 0;
979 asf->packet_segments = 0;
980 asf->packet_seq = 0;
981 asf->packet_replic_size = 0;
982 asf->packet_key_frame = 0;
983 asf->packet_padsize = 0;
984 asf->packet_frag_offset = 0;
985 asf->packet_frag_size = 0;
986 asf->packet_frag_timestamp = 0;
987 asf->packet_multi_size = 0;
988 asf->packet_obj_size = 0;
989 asf->packet_time_delta = 0;
990 asf->packet_time_start = 0;
115329f1 991
82b9e4a2
MN
992 for(i=0; i<s->nb_streams; i++){
993 asf_st= s->streams[i]->priv_data;
994 av_free_packet(&asf_st->pkt);
995 asf_st->frag_offset=0;
996 asf_st->seq=0;
997 }
998 asf->asf_st= NULL;
38376f00
KK
999}
1000
5d25d2a9
DB
1001static int asf_read_close(AVFormatContext *s)
1002{
1003 int i;
1004
1005 asf_reset_header(s);
1006 for(i=0;i<s->nb_streams;i++) {
1007 AVStream *st = s->streams[i];
5d25d2a9
DB
1008 av_free(st->codec->palctrl);
1009 }
1010 return 0;
1011}
1012
8d14a25c 1013static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
38376f00 1014{
38376f00 1015 AVPacket pkt1, *pkt = &pkt1;
82b9e4a2 1016 ASFStream *asf_st;
580fb5e7 1017 int64_t pts;
82b9e4a2 1018 int64_t pos= *ppos;
3e9245a9
MN
1019 int i;
1020 int64_t start_pos[s->nb_streams];
115329f1 1021
3e9245a9
MN
1022 for(i=0; i<s->nb_streams; i++){
1023 start_pos[i]= pos;
1024 }
115329f1 1025
68a10b40 1026 if (s->packet_size > 0)
b098b309 1027 pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
8d14a25c 1028 *ppos= pos;
899681cd 1029 url_fseek(s->pb, pos, SEEK_SET);
115329f1 1030
82b9e4a2 1031//printf("asf_read_pts\n");
82b9e4a2 1032 asf_reset_header(s);
3e9245a9 1033 for(;;){
82b9e4a2 1034 if (av_read_frame(s, pkt) < 0){
0b93103a 1035 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
bb270c08 1036 return AV_NOPTS_VALUE;
82b9e4a2 1037 }
115329f1 1038
38cf2a72 1039 pts= pkt->pts;
580fb5e7
MN
1040
1041 av_free_packet(pkt);
3e9245a9
MN
1042 if(pkt->flags&PKT_FLAG_KEY){
1043 i= pkt->stream_index;
1044
1045 asf_st= s->streams[i]->priv_data;
1046
91d19d47 1047// assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
8d14a25c 1048 pos= asf_st->packet_pos;
09646bab 1049
52e54612 1050 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
8d14a25c 1051 start_pos[i]= asf_st->packet_pos + 1;
115329f1 1052
3e9245a9
MN
1053 if(pkt->stream_index == stream_index)
1054 break;
1055 }
1056 }
1057
1058 *ppos= pos;
949b1a13 1059//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
580fb5e7
MN
1060
1061 return pts;
38376f00
KK
1062}
1063
56c96a22
MN
1064static void asf_build_simple_index(AVFormatContext *s, int stream_index)
1065{
b8b00d94 1066 ff_asf_guid g;
56c96a22 1067 ASFContext *asf = s->priv_data;
d728e3cd 1068 int64_t current_pos= url_ftell(s->pb);
56c96a22 1069 int i;
56c96a22 1070
899681cd
BA
1071 url_fseek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
1072 get_guid(s->pb, &g);
4d0c3dc0 1073 if (!guidcmp(&g, &index_guid)) {
134271c2 1074 int64_t itime, last_pos=-1;
d728e3cd 1075 int pct, ict;
dc1ed614 1076 int64_t av_unused gsize= get_le64(s->pb);
899681cd
BA
1077 get_guid(s->pb, &g);
1078 itime=get_le64(s->pb);
1079 pct=get_le32(s->pb);
1080 ict=get_le32(s->pb);
871e62e5 1081 av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
56c96a22
MN
1082
1083 for (i=0;i<ict;i++){
899681cd
BA
1084 int pktnum=get_le32(s->pb);
1085 int pktct =get_le16(s->pb);
91d19d47 1086 int64_t pos = s->data_offset + s->packet_size*(int64_t)pktnum;
d728e3cd 1087 int64_t index_pts= av_rescale(itime, i, 10000);
56c96a22 1088
134271c2 1089 if(pos != last_pos){
d728e3cd 1090 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct);
91d19d47 1091 av_add_index_entry(s->streams[stream_index], pos, index_pts, s->packet_size, 0, AVINDEX_KEYFRAME);
134271c2
MN
1092 last_pos=pos;
1093 }
56c96a22 1094 }
52e54612 1095 asf->index_read= 1;
56c96a22 1096 }
899681cd 1097 url_fseek(s->pb, current_pos, SEEK_SET);
56c96a22
MN
1098}
1099
3ba1438d 1100static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
2a10020b 1101{
afda223c 1102 ASFContext *asf = s->priv_data;
56c96a22
MN
1103 AVStream *st = s->streams[stream_index];
1104 int64_t pos;
1105 int index;
115329f1 1106
91d19d47 1107 if (s->packet_size <= 0)
38376f00
KK
1108 return -1;
1109
fa13095a 1110 /* Try using the protocol's read_seek if available */
fd2982a0 1111 if(s->pb) {
fa13095a
BA
1112 int ret = av_url_read_fseek(s->pb, stream_index, pts, flags);
1113 if(ret >= 0)
1114 asf_reset_header(s);
fd2982a0 1115 if (ret != AVERROR(ENOSYS))
cd31f8dc 1116 return ret;
fa13095a
BA
1117 }
1118
52e54612 1119 if (!asf->index_read)
56c96a22
MN
1120 asf_build_simple_index(s, stream_index);
1121
52e54612 1122 if(!(asf->index_read && st->index_entries)){
56c96a22
MN
1123 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
1124 return -1;
1125 }else{
1126 index= av_index_search_timestamp(st, pts, flags);
1127 if(index<0)
1128 return -1;
1129
1130 /* find the position */
1131 pos = st->index_entries[index].pos;
56c96a22
MN
1132
1133 // various attempts to find key frame have failed so far
1134 // asf_reset_header(s);
899681cd 1135 // url_fseek(s->pb, pos, SEEK_SET);
56c96a22
MN
1136 // key_pos = pos;
1137 // for(i=0;i<16;i++){
899681cd 1138 // pos = url_ftell(s->pb);
56c96a22
MN
1139 // if (av_read_frame(s, &pkt) < 0){
1140 // av_log(s, AV_LOG_INFO, "seek failed\n");
1141 // return -1;
1142 // }
1143 // asf_st = s->streams[stream_index]->priv_data;
1144 // pos += st->parser->frame_offset;
1145 //
1146 // if (pkt.size > b) {
1147 // b = pkt.size;
1148 // key_pos = pos;
1149 // }
1150 //
1151 // av_free_packet(&pkt);
1152 // }
1153
1154 /* do the seek */
871e62e5 1155 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
899681cd 1156 url_fseek(s->pb, pos, SEEK_SET);
56c96a22 1157 }
38376f00
KK
1158 asf_reset_header(s);
1159 return 0;
2a10020b
ZK
1160}
1161
ff70e601 1162AVInputFormat asf_demuxer = {
c9a65ca8 1163 "asf",
bde15e74 1164 NULL_IF_CONFIG_SMALL("ASF format"),
c9a65ca8
FB
1165 sizeof(ASFContext),
1166 asf_probe,
1167 asf_read_header,
1168 asf_read_packet,
1169 asf_read_close,
2a10020b 1170 asf_read_seek,
8d14a25c 1171 asf_read_pts,
719e721a 1172 .metadata_conv = ff_asf_metadata_conv,
c9a65ca8 1173};