Express the H.264 parser dependency on the golomb code in configure instead of
[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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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{
155 char value[1024];
156 if (type <= 1) { // unicode or byte
157 get_str16_nolen(s->pb, len, value, sizeof(value));
158 } else if (type <= 5) { // boolean or DWORD or QWORD or WORD
159 uint64_t num = get_value(s->pb, type);
160 snprintf(value, sizeof(value), "%"PRIu64, num);
161 } else {
162 url_fskip(s->pb, len);
163 return;
164 }
be039510 165 if (!strncmp(key, "WM/", 3))
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166 key += 3;
167 av_metadata_set(&s->metadata, key, value);
168}
169
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170static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
171{
c9a65ca8 172 ASFContext *asf = s->priv_data;
b8b00d94 173 ff_asf_guid g;
899681cd 174 ByteIOContext *pb = s->pb;
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175 AVStream *st;
176 ASFStream *asf_st;
e095026a 177 int size, i;
0c1a9eda 178 int64_t gsize;
30e88789 179 AVRational dar[128];
d8470737 180 uint32_t bitrate[128];
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181
182 memset(dar, 0, sizeof(dar));
d8470737 183 memset(bitrate, 0, sizeof(bitrate));
de6d9b64 184
de6d9b64 185 get_guid(pb, &g);
4d0c3dc0 186 if (guidcmp(&g, &ff_asf_header))
ccafd472 187 return -1;
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188 get_le64(pb);
189 get_le32(pb);
190 get_byte(pb);
191 get_byte(pb);
2141dc37 192 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
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193 for(;;) {
194 get_guid(pb, &g);
195 gsize = get_le64(pb);
f94981ea 196 dprintf(s, "%08"PRIx64": ", url_ftell(pb) - 24);
de6d9b64 197 print_guid(&g);
f94981ea 198 dprintf(s, " size=0x%"PRIx64"\n", gsize);
4d0c3dc0 199 if (!guidcmp(&g, &ff_asf_data_header)) {
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200 asf->data_object_offset = url_ftell(pb);
201 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
202 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
203 asf->data_object_size = gsize - 24;
204 } else {
205 asf->data_object_size = (uint64_t)-1;
206 }
207 break;
208 }
de6d9b64 209 if (gsize < 24)
ccafd472 210 return -1;
4d0c3dc0 211 if (!guidcmp(&g, &ff_asf_file_header)) {
2a10020b 212 get_guid(pb, &asf->hdr.guid);
bb270c08
DB
213 asf->hdr.file_size = get_le64(pb);
214 asf->hdr.create_time = get_le64(pb);
6bb2a2df 215 asf->nb_packets = get_le64(pb);
bb270c08 216 asf->hdr.play_time = get_le64(pb);
b4bbcd63 217 asf->hdr.send_time = get_le64(pb);
bb270c08
DB
218 asf->hdr.preroll = get_le32(pb);
219 asf->hdr.ignore = get_le32(pb);
220 asf->hdr.flags = get_le32(pb);
221 asf->hdr.min_pktsize = get_le32(pb);
222 asf->hdr.max_pktsize = get_le32(pb);
223 asf->hdr.max_bitrate = get_le32(pb);
224 asf->packet_size = asf->hdr.max_pktsize;
4d0c3dc0 225 } else if (!guidcmp(&g, &ff_asf_stream_header)) {
fb65d2ca
DP
226 enum CodecType type;
227 int type_specific_size, sizeX;
7ad5455c 228 uint64_t total_size;
de6d9b64 229 unsigned int tag1;
371bf806 230 int64_t pos1, pos2, start_time;
6fea687e 231 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
2a10020b 232
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233 pos1 = url_ftell(pb);
234
247eadca 235 st = av_new_stream(s, 0);
de6d9b64 236 if (!st)
ccafd472 237 return AVERROR(ENOMEM);
9ee91c2f 238 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
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239 asf_st = av_mallocz(sizeof(ASFStream));
240 if (!asf_st)
ccafd472 241 return AVERROR(ENOMEM);
de6d9b64 242 st->priv_data = asf_st;
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MN
243 start_time = asf->hdr.preroll;
244
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CC
245 asf_st->stream_language_index = 128; // invalid stream index means no language info
246
73fe1052
RM
247 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
248 st->duration = asf->hdr.send_time /
371bf806 249 (10000000 / 1000) - start_time;
73fe1052 250 }
de6d9b64 251 get_guid(pb, &g);
88141c91
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252
253 test_for_ext_stream_audio = 0;
4d0c3dc0 254 if (!guidcmp(&g, &ff_asf_audio_stream)) {
de6d9b64 255 type = CODEC_TYPE_AUDIO;
4d0c3dc0 256 } else if (!guidcmp(&g, &ff_asf_video_stream)) {
de6d9b64 257 type = CODEC_TYPE_VIDEO;
4d0c3dc0 258 } else if (!guidcmp(&g, &ff_asf_command_stream)) {
3e86dba2 259 type = CODEC_TYPE_DATA;
4d0c3dc0 260 } else if (!guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
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261 test_for_ext_stream_audio = 1;
262 type = CODEC_TYPE_UNKNOWN;
de6d9b64 263 } else {
ccafd472 264 return -1;
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FB
265 }
266 get_guid(pb, &g);
267 total_size = get_le64(pb);
2e7973bb 268 type_specific_size = get_le32(pb);
de6d9b64 269 get_le32(pb);
bb270c08 270 st->id = get_le16(pb) & 0x7f; /* stream id */
2a10020b 271 // mapping of asf ID to AV stream ID;
247eadca 272 asf->asfid2avid[st->id] = s->nb_streams - 1;
2a10020b 273
de6d9b64 274 get_le32(pb);
88141c91
MN
275
276 if (test_for_ext_stream_audio) {
277 get_guid(pb, &g);
4d0c3dc0 278 if (!guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
88141c91 279 type = CODEC_TYPE_AUDIO;
6fea687e 280 is_dvr_ms_audio=1;
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MN
281 get_guid(pb, &g);
282 get_le32(pb);
283 get_le32(pb);
284 get_le32(pb);
285 get_guid(pb, &g);
286 get_le32(pb);
287 }
288 }
289
bb270c08 290 st->codec->codec_type = type;
de6d9b64 291 if (type == CODEC_TYPE_AUDIO) {
01f4895c 292 get_wav_header(pb, st->codec, type_specific_size);
6fea687e
JD
293 if (is_dvr_ms_audio) {
294 // codec_id and codec_tag are unreliable in dvr_ms
295 // files. Set them later by probing stream.
0bef08e5 296 st->codec->codec_id = CODEC_ID_PROBE;
6fea687e
JD
297 st->codec->codec_tag = 0;
298 }
e7f73adb
AC
299 if (st->codec->codec_id == CODEC_ID_AAC) {
300 st->need_parsing = AVSTREAM_PARSE_NONE;
301 } else {
e9259f8d 302 st->need_parsing = AVSTREAM_PARSE_FULL;
e7f73adb 303 }
bb270c08
DB
304 /* We have to init the frame size at some point .... */
305 pos2 = url_ftell(pb);
b9c6d01b 306 if (gsize >= (pos2 + 8 - pos1 + 24)) {
bb270c08
DB
307 asf_st->ds_span = get_byte(pb);
308 asf_st->ds_packet_size = get_le16(pb);
309 asf_st->ds_chunk_size = get_le16(pb);
6bb2a2df
MN
310 get_le16(pb); //ds_data_size
311 get_byte(pb); //ds_silence_data
bb270c08
DB
312 }
313 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
314 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
315 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
316 if (asf_st->ds_span > 1) {
317 if (!asf_st->ds_chunk_size
05219463
MN
318 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
319 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
bb270c08
DB
320 asf_st->ds_span = 0; // disable descrambling
321 }
01f4895c 322 switch (st->codec->codec_id) {
80783dc2 323 case CODEC_ID_MP3:
01f4895c 324 st->codec->frame_size = MPA_FRAME_SIZE;
f80c1ac0
PG
325 break;
326 case CODEC_ID_PCM_S16LE:
327 case CODEC_ID_PCM_S16BE:
328 case CODEC_ID_PCM_U16LE:
329 case CODEC_ID_PCM_U16BE:
330 case CODEC_ID_PCM_S8:
331 case CODEC_ID_PCM_U8:
332 case CODEC_ID_PCM_ALAW:
333 case CODEC_ID_PCM_MULAW:
01f4895c 334 st->codec->frame_size = 1;
f80c1ac0
PG
335 break;
336 default:
337 /* This is probably wrong, but it prevents a crash later */
01f4895c 338 st->codec->frame_size = 1;
f80c1ac0
PG
339 break;
340 }
88141c91 341 } else if (type == CODEC_TYPE_VIDEO) {
bb270c08 342 get_le32(pb);
de6d9b64
FB
343 get_le32(pb);
344 get_byte(pb);
345 size = get_le16(pb); /* size */
0ffd77b9 346 sizeX= get_le32(pb); /* size */
01f4895c 347 st->codec->width = get_le32(pb);
bb270c08 348 st->codec->height = get_le32(pb);
2a10020b 349 /* not available for asf */
de6d9b64 350 get_le16(pb); /* panes */
dd1c8f3e 351 st->codec->bits_per_coded_sample = get_le16(pb); /* depth */
de6d9b64 352 tag1 = get_le32(pb);
bb270c08 353 url_fskip(pb, 20);
871e62e5 354// av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
0ffd77b9 355 size= sizeX;
bb270c08
DB
356 if (size > 40) {
357 st->codec->extradata_size = size - 40;
358 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
359 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
360 }
5e29abf8 361
6d050dd6 362 /* Extract palette from extradata if bpp <= 8 */
363 /* This code assumes that extradata contains only palette */
364 /* This is true for all paletted codecs implemented in ffmpeg */
365 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
366 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
5e29abf8 367#ifdef WORDS_BIGENDIAN
6d050dd6 368 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
369 st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
5e29abf8 370#else
6d050dd6 371 memcpy(st->codec->palctrl->palette, st->codec->extradata,
372 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
5e29abf8 373#endif
6d050dd6 374 st->codec->palctrl->palette_changed = 1;
375 }
5e29abf8 376
01f4895c 377 st->codec->codec_tag = tag1;
bb270c08 378 st->codec->codec_id = codec_get_id(codec_bmp_tags, tag1);
afbb5ce4 379 if(tag1 == MKTAG('D', 'V', 'R', ' '))
57004ff1 380 st->need_parsing = AVSTREAM_PARSE_FULL;
de6d9b64
FB
381 }
382 pos2 = url_ftell(pb);
383 url_fskip(pb, gsize - (pos2 - pos1 + 24));
4d0c3dc0 384 } else if (!guidcmp(&g, &ff_asf_comment_header)) {
de6d9b64
FB
385 int len1, len2, len3, len4, len5;
386
387 len1 = get_le16(pb);
388 len2 = get_le16(pb);
389 len3 = get_le16(pb);
390 len4 = get_le16(pb);
391 len5 = get_le16(pb);
20e2a7ae
AJ
392 get_tag(s, "title" , 0, len1);
393 get_tag(s, "author" , 0, len2);
394 get_tag(s, "copyright", 0, len3);
395 get_tag(s, "comment" , 0, len4);
bb270c08 396 url_fskip(pb, len5);
4d0c3dc0 397 } else if (!guidcmp(&g, &stream_bitrate_guid)) {
0e3b6a6f
RM
398 int stream_count = get_le16(pb);
399 int j;
400
871e62e5
BF
401// av_log(s, AV_LOG_ERROR, "stream bitrate properties\n");
402// av_log(s, AV_LOG_ERROR, "streams %d\n", streams);
0e3b6a6f
RM
403 for(j = 0; j < stream_count; j++) {
404 int flags, bitrate, stream_id;
405
406 flags= get_le16(pb);
407 bitrate= get_le32(pb);
408 stream_id= (flags & 0x7f);
871e62e5 409// av_log(s, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate);
a9054d91 410 asf->stream_bitrates[stream_id]= bitrate;
0e3b6a6f 411 }
5f1ac36d
CC
412 } else if (!guidcmp(&g, &ff_asf_language_guid)) {
413 int j;
414 int stream_count = get_le16(pb);
415 for(j = 0; j < stream_count; j++) {
416 char lang[6];
417 unsigned int lang_len = get_byte(pb);
418 get_str16_nolen(pb, lang_len, lang, sizeof(lang));
419 if (j < 128)
420 av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
421 }
4d0c3dc0 422 } else if (!guidcmp(&g, &ff_asf_extended_content_header)) {
6d050dd6 423 int desc_count, i;
424
425 desc_count = get_le16(pb);
426 for(i=0;i<desc_count;i++) {
427 int name_len,value_type,value_len;
428 char name[1024];
429
430 name_len = get_le16(pb);
431 get_str16_nolen(pb, name_len, name, sizeof(name));
432 value_type = get_le16(pb);
433 value_len = get_le16(pb);
434 get_tag(s, name, value_type, value_len);
435 }
4d0c3dc0 436 } else if (!guidcmp(&g, &ff_asf_metadata_header)) {
30e88789
MN
437 int n, stream_num, name_len, value_len, value_type, value_num;
438 n = get_le16(pb);
439
440 for(i=0;i<n;i++) {
441 char name[1024];
442
443 get_le16(pb); //lang_list_index
444 stream_num= get_le16(pb);
445 name_len= get_le16(pb);
446 value_type= get_le16(pb);
447 value_len= get_le32(pb);
448
449 get_str16_nolen(pb, name_len, name, sizeof(name));
871e62e5 450//av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
755bfeab 451 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
452 url_fskip(pb, value_len - 2);
453
454 if(stream_num<128){
455 if (!strcmp(name, "AspectRatioX")) dar[stream_num].num= value_num;
456 else if(!strcmp(name, "AspectRatioY")) dar[stream_num].den= value_num;
457 }
458 }
4d0c3dc0 459 } else if (!guidcmp(&g, &ff_asf_ext_stream_header)) {
88141c91 460 int ext_len, payload_ext_ct, stream_ct;
d8470737 461 uint32_t ext_d, leak_rate, stream_num;
5f1ac36d 462 unsigned int stream_languageid_index;
88141c91 463
de3ae959
MN
464 get_le64(pb); // starttime
465 get_le64(pb); // endtime
d8470737 466 leak_rate = get_le32(pb); // leak-datarate
de3ae959
MN
467 get_le32(pb); // bucket-datasize
468 get_le32(pb); // init-bucket-fullness
469 get_le32(pb); // alt-leak-datarate
470 get_le32(pb); // alt-bucket-datasize
471 get_le32(pb); // alt-init-bucket-fullness
472 get_le32(pb); // max-object-size
473 get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
d8470737 474 stream_num = get_le16(pb); // stream-num
5f1ac36d
CC
475
476 stream_languageid_index = get_le16(pb); // stream-language-id-index
477 if (stream_num < 128)
478 asf->streams[stream_num].stream_language_index = stream_languageid_index;
479
de3ae959
MN
480 get_le64(pb); // avg frametime in 100ns units
481 stream_ct = get_le16(pb); //stream-name-count
482 payload_ext_ct = get_le16(pb); //payload-extension-system-count
88141c91 483
d8470737
ZM
484 if (stream_num < 128)
485 bitrate[stream_num] = leak_rate;
486
88141c91
MN
487 for (i=0; i<stream_ct; i++){
488 get_le16(pb);
489 ext_len = get_le16(pb);
490 url_fseek(pb, ext_len, SEEK_CUR);
491 }
492
493 for (i=0; i<payload_ext_ct; i++){
494 get_guid(pb, &g);
495 ext_d=get_le16(pb);
496 ext_len=get_le32(pb);
497 url_fseek(pb, ext_len, SEEK_CUR);
498 }
499
500 // there could be a optional stream properties object to follow
501 // if so the next iteration will pick it up
4d0c3dc0 502 } else if (!guidcmp(&g, &ff_asf_head1_guid)) {
de6d9b64
FB
503 int v1, v2;
504 get_guid(pb, &g);
505 v1 = get_le32(pb);
506 v2 = get_le16(pb);
88141c91 507#if 0
4d0c3dc0 508 } else if (!guidcmp(&g, &ff_asf_codec_comment_header)) {
de6d9b64
FB
509 int len, v1, n, num;
510 char str[256], *q;
511 char tag[16];
512
513 get_guid(pb, &g);
514 print_guid(&g);
2a10020b 515
de6d9b64
FB
516 n = get_le32(pb);
517 for(i=0;i<n;i++) {
518 num = get_le16(pb); /* stream number */
519 get_str16(pb, str, sizeof(str));
520 get_str16(pb, str, sizeof(str));
521 len = get_le16(pb);
522 q = tag;
523 while (len > 0) {
524 v1 = get_byte(pb);
525 if ((q - tag) < sizeof(tag) - 1)
526 *q++ = v1;
527 len--;
528 }
529 *q = '\0';
530 }
531#endif
532 } else if (url_feof(pb)) {
ccafd472 533 return -1;
de6d9b64
FB
534 } else {
535 url_fseek(pb, gsize - 24, SEEK_CUR);
536 }
537 }
538 get_guid(pb, &g);
539 get_le64(pb);
540 get_byte(pb);
541 get_byte(pb);
2141dc37 542 if (url_feof(pb))
ccafd472 543 return -1;
2141dc37 544 asf->data_offset = url_ftell(pb);
de6d9b64
FB
545 asf->packet_size_left = 0;
546
30e88789
MN
547
548 for(i=0; i<128; i++){
549 int stream_num= asf->asfid2avid[i];
d8470737 550 if(stream_num>=0){
59729451
AJ
551 AVStream *st = s->streams[stream_num];
552 if (!st->codec->bit_rate)
553 st->codec->bit_rate = bitrate[i];
d8470737 554 if (dar[i].num > 0 && dar[i].den > 0)
59729451
AJ
555 av_reduce(&st->sample_aspect_ratio.num,
556 &st->sample_aspect_ratio.den,
18d915dd 557 dar[i].num, dar[i].den, INT_MAX);
871e62e5 558//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
559
560 // copy and convert language codes to the frontend
561 if (asf->streams[i].stream_language_index < 128) {
562 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
563 if (rfc1766 && strlen(rfc1766) > 1) {
564 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
565 const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
566 if (iso6392)
567 av_metadata_set(&st->metadata, "language", iso6392);
568 }
569 }
30e88789
MN
570 }
571 }
572
de6d9b64 573 return 0;
de6d9b64
FB
574}
575
2a10020b
ZK
576#define DO_2BITS(bits, var, defval) \
577 switch (bits & 3) \
578 { \
579 case 3: var = get_le32(pb); rsize += 4; break; \
580 case 2: var = get_le16(pb); rsize += 2; break; \
581 case 1: var = get_byte(pb); rsize++; break; \
582 default: var = defval; break; \
583 }
584
1d217cdb 585int ff_asf_get_packet(AVFormatContext *s, ByteIOContext *pb)
de6d9b64
FB
586{
587 ASFContext *asf = s->priv_data;
2a10020b 588 uint32_t packet_length, padsize;
0c0d17f3 589 int rsize = 8;
0fd9e6f3
MN
590 int c, d, e, off;
591
022f0b7c 592 off= (url_ftell(pb) - s->data_offset) % asf->packet_size + 3;
0fd9e6f3
MN
593
594 c=d=e=-1;
595 while(off-- > 0){
596 c=d; d=e;
597 e= get_byte(pb);
598 if(c == 0x82 && !d && !e)
599 break;
600 }
115329f1 601
1359c2d4 602 if (c != 0x82) {
5acdd6e6 603 if (!url_feof(pb))
bb270c08 604 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
2a10020b 605 }
0c0d17f3 606 if ((c & 0x8f) == 0x82) {
0fd9e6f3 607 if (d || e) {
5acdd6e6 608 if (!url_feof(pb))
bb270c08 609 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
f7835507 610 return -1;
bb270c08 611 }
0c0d17f3 612 c= get_byte(pb);
0fd9e6f3 613 d= get_byte(pb);
0c0d17f3
MN
614 rsize+=3;
615 }else{
616 url_fseek(pb, -1, SEEK_CUR); //FIXME
de6d9b64 617 }
2a10020b 618
0c0d17f3
MN
619 asf->packet_flags = c;
620 asf->packet_property = d;
2a10020b
ZK
621
622 DO_2BITS(asf->packet_flags >> 5, packet_length, asf->packet_size);
623 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
624 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
625
5b11e081
MN
626 //the following checks prevent overflows and infinite loops
627 if(packet_length >= (1U<<29)){
628 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb));
ceba96cb 629 return -1;
5b11e081 630 }
92216453 631 if(padsize >= packet_length){
5b11e081 632 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, url_ftell(pb));
ceba96cb 633 return -1;
5b11e081
MN
634 }
635
2a10020b 636 asf->packet_timestamp = get_le32(pb);
de6d9b64 637 get_le16(pb); /* duration */
2141dc37 638 // rsize has at least 11 bytes which have to be present
2a10020b
ZK
639
640 if (asf->packet_flags & 0x01) {
bb270c08 641 asf->packet_segsizetype = get_byte(pb); rsize++;
2a10020b
ZK
642 asf->packet_segments = asf->packet_segsizetype & 0x3f;
643 } else {
bb270c08 644 asf->packet_segments = 1;
2a10020b
ZK
645 asf->packet_segsizetype = 0x80;
646 }
647 asf->packet_size_left = packet_length - padsize - rsize;
acbe6cfa
ZK
648 if (packet_length < asf->hdr.min_pktsize)
649 padsize += asf->hdr.min_pktsize - packet_length;
2a10020b 650 asf->packet_padsize = padsize;
f94981ea 651 dprintf(s, "packet: size=%d padsize=%d left=%d\n", asf->packet_size, asf->packet_padsize, asf->packet_size_left);
de6d9b64
FB
652 return 0;
653}
654
ae60a857
MN
655/**
656 *
657 * @return <0 if error
658 */
d7fb5a18 659static int asf_read_frame_header(AVFormatContext *s, ByteIOContext *pb){
ae60a857 660 ASFContext *asf = s->priv_data;
ae60a857
MN
661 int rsize = 1;
662 int num = get_byte(pb);
559a55ad 663 int64_t ts0, ts1;
ae60a857
MN
664
665 asf->packet_segments--;
666 asf->packet_key_frame = num >> 7;
667 asf->stream_index = asf->asfid2avid[num & 0x7f];
668 // sequence should be ignored!
669 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
670 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
671 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
672//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);
673 if (asf->packet_replic_size >= 8) {
674 asf->packet_obj_size = get_le32(pb);
675 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
676 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
677 return -1;
678 }
679 asf->packet_frag_timestamp = get_le32(pb); // timestamp
559a55ad
MN
680 if(asf->packet_replic_size >= 8+38+4){
681// for(i=0; i<asf->packet_replic_size-8; i++)
682// av_log(s, AV_LOG_DEBUG, "%02X ",get_byte(pb));
683// av_log(s, AV_LOG_DEBUG, "\n");
684 url_fskip(pb, 10);
685 ts0= get_le64(pb);
686 ts1= get_le64(pb);
687 url_fskip(pb, 12);
688 get_le32(pb);
689 url_fskip(pb, asf->packet_replic_size - 8 - 38 - 4);
690 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
691 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
692 }else
693 url_fskip(pb, asf->packet_replic_size - 8);
ae60a857
MN
694 rsize += asf->packet_replic_size; // FIXME - check validity
695 } else if (asf->packet_replic_size==1){
efc90ebf 696 // multipacket - frag_offset is beginning timestamp
ae60a857
MN
697 asf->packet_time_start = asf->packet_frag_offset;
698 asf->packet_frag_offset = 0;
699 asf->packet_frag_timestamp = asf->packet_timestamp;
700
701 asf->packet_time_delta = get_byte(pb);
702 rsize++;
703 }else if(asf->packet_replic_size!=0){
704 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
705 return -1;
706 }
707 if (asf->packet_flags & 0x01) {
708 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
13f7e4b9
MN
709 if(asf->packet_frag_size > asf->packet_size_left - rsize){
710 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n");
711 return -1;
712 }
ae60a857
MN
713 //printf("Fragsize %d\n", asf->packet_frag_size);
714 } else {
715 asf->packet_frag_size = asf->packet_size_left - rsize;
716 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
717 }
718 if (asf->packet_replic_size == 1) {
719 asf->packet_multi_size = asf->packet_frag_size;
720 if (asf->packet_multi_size > asf->packet_size_left)
721 return -1;
722 }
723 asf->packet_size_left -= rsize;
724 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
725
726 return 0;
727}
728
1d217cdb 729int ff_asf_parse_packet(AVFormatContext *s, ByteIOContext *pb, AVPacket *pkt)
de6d9b64
FB
730{
731 ASFContext *asf = s->priv_data;
2a10020b 732 ASFStream *asf_st = 0;
2a10020b 733 for (;;) {
ceba96cb 734 if(url_feof(pb))
799a0722 735 return AVERROR_EOF;
bb270c08
DB
736 if (asf->packet_size_left < FRAME_HEADER_SIZE
737 || asf->packet_segments < 1) {
738 //asf->packet_size_left <= asf->packet_padsize) {
739 int ret = asf->packet_size_left + asf->packet_padsize;
949b1a13 740 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
5b11e081 741 assert(ret>=0);
bb270c08
DB
742 /* fail safe */
743 url_fskip(pb, ret);
b04d5d31 744
022f0b7c 745 asf->packet_pos= url_ftell(pb);
b6eaae39
KED
746 if (asf->data_object_size != (uint64_t)-1 &&
747 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
1d0036b0 748 return AVERROR_EOF; /* Do not exceed the size of the data object */
f27544fd 749 return 1;
bb270c08
DB
750 }
751 if (asf->packet_time_start == 0) {
b0d75d60 752 if(asf_read_frame_header(s, pb) < 0){
ae60a857 753 asf->packet_segments= 0;
236116cb 754 continue;
1305a9d5 755 }
bb270c08 756 if (asf->stream_index < 0
f3356e9c
MN
757 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
758 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
759 ) {
1359c2d4 760 asf->packet_time_start = 0;
bb270c08
DB
761 /* unhandled packet (should not happen) */
762 url_fskip(pb, asf->packet_frag_size);
763 asf->packet_size_left -= asf->packet_frag_size;
b9866ebc 764 if(asf->stream_index < 0)
ae60a857 765 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
1359c2d4 766 continue;
bb270c08
DB
767 }
768 asf->asf_st = s->streams[asf->stream_index]->priv_data;
769 }
770 asf_st = asf->asf_st;
771
bb270c08 772 if (asf->packet_replic_size == 1) {
efc90ebf 773 // frag_offset is here used as the beginning timestamp
bb270c08
DB
774 asf->packet_frag_timestamp = asf->packet_time_start;
775 asf->packet_time_start += asf->packet_time_delta;
776 asf->packet_obj_size = asf->packet_frag_size = get_byte(pb);
777 asf->packet_size_left--;
2141dc37 778 asf->packet_multi_size--;
bb270c08
DB
779 if (asf->packet_multi_size < asf->packet_obj_size)
780 {
781 asf->packet_time_start = 0;
782 url_fskip(pb, asf->packet_multi_size);
783 asf->packet_size_left -= asf->packet_multi_size;
2141dc37 784 continue;
bb270c08
DB
785 }
786 asf->packet_multi_size -= asf->packet_obj_size;
787 //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);
788 }
60ff1c44
MN
789 if( /*asf->packet_frag_size == asf->packet_obj_size*/
790 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
791 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
792 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
793 asf_st->frag_offset, asf->packet_frag_size,
794 asf->packet_obj_size, asf_st->pkt.size);
795 asf->packet_obj_size= asf_st->pkt.size;
796 }
797
f8f0a0bd
MN
798 if ( asf_st->pkt.size != asf->packet_obj_size
799 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
200026aa
MN
800 if(asf_st->pkt.data){
801 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
802 asf_st->frag_offset = 0;
803 av_free_packet(&asf_st->pkt);
804 }
bb270c08
DB
805 /* new packet */
806 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
807 asf_st->seq = asf->packet_seq;
eb63b051 808 asf_st->pkt.dts = asf->packet_frag_timestamp;
bb270c08 809 asf_st->pkt.stream_index = asf->stream_index;
115329f1
DB
810 asf_st->pkt.pos =
811 asf_st->packet_pos= asf->packet_pos;
812//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
82b9e4a2 813//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY,
01f4895c 814//s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size);
bb270c08
DB
815 if (s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO)
816 asf->packet_key_frame = 1;
817 if (asf->packet_key_frame)
818 asf_st->pkt.flags |= PKT_FLAG_KEY;
819 }
820
821 /* read data */
822 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
823 // asf->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
824 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
825 asf->packet_size_left -= asf->packet_frag_size;
826 if (asf->packet_size_left < 0)
2141dc37 827 continue;
4c71d727
MN
828
829 if( asf->packet_frag_offset >= asf_st->pkt.size
830 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
831 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
832 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
833 continue;
834 }
835
bb270c08
DB
836 get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
837 asf->packet_frag_size);
72be7db4
RD
838 if (s->key && s->keylen == 20)
839 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
840 asf->packet_frag_size);
bb270c08
DB
841 asf_st->frag_offset += asf->packet_frag_size;
842 /* test if whole packet is read */
843 if (asf_st->frag_offset == asf_st->pkt.size) {
da0b94f5
MN
844 //workaround for macroshit radio DVR-MS files
845 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
846 && asf_st->pkt.size > 100){
847 int i;
848 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
849 if(i == asf_st->pkt.size){
850 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
851 asf_st->frag_offset = 0;
852 av_free_packet(&asf_st->pkt);
853 continue;
854 }
855 }
856
bb270c08
DB
857 /* return packet */
858 if (asf_st->ds_span > 1) {
05219463 859 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
b43387d4 860 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 861 }else{
bb270c08 862 /* packet descrambling */
191e8ca7 863 uint8_t *newdata = av_malloc(asf_st->pkt.size);
bb270c08
DB
864 if (newdata) {
865 int offset = 0;
866 while (offset < asf_st->pkt.size) {
867 int off = offset / asf_st->ds_chunk_size;
868 int row = off / asf_st->ds_span;
869 int col = off % asf_st->ds_span;
870 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
871 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
05219463
MN
872
873 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
874 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
bb270c08
DB
875 memcpy(newdata + offset,
876 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
877 asf_st->ds_chunk_size);
878 offset += asf_st->ds_chunk_size;
879 }
880 av_free(asf_st->pkt.data);
881 asf_st->pkt.data = newdata;
882 }
05219463 883 }
bb270c08
DB
884 }
885 asf_st->frag_offset = 0;
b83e83b9 886 *pkt= asf_st->pkt;
bb270c08
DB
887 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
888 asf_st->pkt.size = 0;
889 asf_st->pkt.data = 0;
890 break; // packet completed
891 }
de6d9b64 892 }
de6d9b64
FB
893 return 0;
894}
895
f27544fd
RB
896static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
897{
898 ASFContext *asf = s->priv_data;
899
900 for (;;) {
901 int ret;
902
903 /* parse cached packets, if any */
1d217cdb 904 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
f27544fd 905 return ret;
1d217cdb 906 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
f27544fd
RB
907 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
908 asf->packet_time_start = 0;
909 }
910
911 return 0;
912}
913
38376f00
KK
914// Added to support seeking after packets have been read
915// If information is not reset, read_packet fails due to
916// leftover information from previous reads
917static void asf_reset_header(AVFormatContext *s)
918{
919 ASFContext *asf = s->priv_data;
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920 ASFStream *asf_st;
921 int i;
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922
923 asf->packet_nb_frames = 0;
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924 asf->packet_size_left = 0;
925 asf->packet_segments = 0;
926 asf->packet_flags = 0;
927 asf->packet_property = 0;
928 asf->packet_timestamp = 0;
929 asf->packet_segsizetype = 0;
930 asf->packet_segments = 0;
931 asf->packet_seq = 0;
932 asf->packet_replic_size = 0;
933 asf->packet_key_frame = 0;
934 asf->packet_padsize = 0;
935 asf->packet_frag_offset = 0;
936 asf->packet_frag_size = 0;
937 asf->packet_frag_timestamp = 0;
938 asf->packet_multi_size = 0;
939 asf->packet_obj_size = 0;
940 asf->packet_time_delta = 0;
941 asf->packet_time_start = 0;
115329f1 942
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943 for(i=0; i<s->nb_streams; i++){
944 asf_st= s->streams[i]->priv_data;
945 av_free_packet(&asf_st->pkt);
946 asf_st->frag_offset=0;
947 asf_st->seq=0;
948 }
949 asf->asf_st= NULL;
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950}
951
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952static int asf_read_close(AVFormatContext *s)
953{
954 int i;
955
956 asf_reset_header(s);
957 for(i=0;i<s->nb_streams;i++) {
958 AVStream *st = s->streams[i];
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959 av_free(st->codec->palctrl);
960 }
961 return 0;
962}
963
8d14a25c 964static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
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965{
966 ASFContext *asf = s->priv_data;
967 AVPacket pkt1, *pkt = &pkt1;
82b9e4a2 968 ASFStream *asf_st;
580fb5e7 969 int64_t pts;
82b9e4a2 970 int64_t pos= *ppos;
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971 int i;
972 int64_t start_pos[s->nb_streams];
115329f1 973
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974 for(i=0; i<s->nb_streams; i++){
975 start_pos[i]= pos;
976 }
115329f1 977
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978 pos= (pos+asf->packet_size-1-s->data_offset)/asf->packet_size*asf->packet_size+ s->data_offset;
979 *ppos= pos;
899681cd 980 url_fseek(s->pb, pos, SEEK_SET);
115329f1 981
82b9e4a2 982//printf("asf_read_pts\n");
82b9e4a2 983 asf_reset_header(s);
3e9245a9 984 for(;;){
82b9e4a2 985 if (av_read_frame(s, pkt) < 0){
0b93103a 986 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
bb270c08 987 return AV_NOPTS_VALUE;
82b9e4a2 988 }
115329f1 989
38cf2a72 990 pts= pkt->pts;
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991
992 av_free_packet(pkt);
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993 if(pkt->flags&PKT_FLAG_KEY){
994 i= pkt->stream_index;
995
996 asf_st= s->streams[i]->priv_data;
997
0fd9e6f3 998// assert((asf_st->packet_pos - s->data_offset) % asf->packet_size == 0);
8d14a25c 999 pos= asf_st->packet_pos;
09646bab 1000
52e54612 1001 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
8d14a25c 1002 start_pos[i]= asf_st->packet_pos + 1;
115329f1 1003
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1004 if(pkt->stream_index == stream_index)
1005 break;
1006 }
1007 }
1008
1009 *ppos= pos;
949b1a13 1010//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
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1011
1012 return pts;
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1013}
1014
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1015static void asf_build_simple_index(AVFormatContext *s, int stream_index)
1016{
b8b00d94 1017 ff_asf_guid g;
56c96a22 1018 ASFContext *asf = s->priv_data;
d728e3cd 1019 int64_t current_pos= url_ftell(s->pb);
56c96a22 1020 int i;
56c96a22 1021
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1022 url_fseek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
1023 get_guid(s->pb, &g);
4d0c3dc0 1024 if (!guidcmp(&g, &index_guid)) {
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1025 int64_t itime;
1026 int pct, ict;
dc1ed614 1027 int64_t av_unused gsize= get_le64(s->pb);
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1028 get_guid(s->pb, &g);
1029 itime=get_le64(s->pb);
1030 pct=get_le32(s->pb);
1031 ict=get_le32(s->pb);
871e62e5 1032 av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
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1033
1034 for (i=0;i<ict;i++){
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1035 int pktnum=get_le32(s->pb);
1036 int pktct =get_le16(s->pb);
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1037 int64_t pos = s->data_offset + asf->packet_size*(int64_t)pktnum;
1038 int64_t index_pts= av_rescale(itime, i, 10000);
56c96a22 1039
d728e3cd 1040 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct);
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1041 av_add_index_entry(s->streams[stream_index], pos, index_pts, asf->packet_size, 0, AVINDEX_KEYFRAME);
1042 }
52e54612 1043 asf->index_read= 1;
56c96a22 1044 }
899681cd 1045 url_fseek(s->pb, current_pos, SEEK_SET);
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1046}
1047
3ba1438d 1048static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
2a10020b 1049{
afda223c 1050 ASFContext *asf = s->priv_data;
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1051 AVStream *st = s->streams[stream_index];
1052 int64_t pos;
1053 int index;
115329f1 1054
a602556e 1055 if (asf->packet_size <= 0)
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1056 return -1;
1057
fa13095a 1058 /* Try using the protocol's read_seek if available */
fd2982a0 1059 if(s->pb) {
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1060 int ret = av_url_read_fseek(s->pb, stream_index, pts, flags);
1061 if(ret >= 0)
1062 asf_reset_header(s);
fd2982a0 1063 if (ret != AVERROR(ENOSYS))
cd31f8dc 1064 return ret;
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1065 }
1066
52e54612 1067 if (!asf->index_read)
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1068 asf_build_simple_index(s, stream_index);
1069
52e54612 1070 if(!(asf->index_read && st->index_entries)){
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1071 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
1072 return -1;
1073 }else{
1074 index= av_index_search_timestamp(st, pts, flags);
1075 if(index<0)
1076 return -1;
1077
1078 /* find the position */
1079 pos = st->index_entries[index].pos;
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1080
1081 // various attempts to find key frame have failed so far
1082 // asf_reset_header(s);
899681cd 1083 // url_fseek(s->pb, pos, SEEK_SET);
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1084 // key_pos = pos;
1085 // for(i=0;i<16;i++){
899681cd 1086 // pos = url_ftell(s->pb);
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1087 // if (av_read_frame(s, &pkt) < 0){
1088 // av_log(s, AV_LOG_INFO, "seek failed\n");
1089 // return -1;
1090 // }
1091 // asf_st = s->streams[stream_index]->priv_data;
1092 // pos += st->parser->frame_offset;
1093 //
1094 // if (pkt.size > b) {
1095 // b = pkt.size;
1096 // key_pos = pos;
1097 // }
1098 //
1099 // av_free_packet(&pkt);
1100 // }
1101
1102 /* do the seek */
871e62e5 1103 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
899681cd 1104 url_fseek(s->pb, pos, SEEK_SET);
56c96a22 1105 }
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1106 asf_reset_header(s);
1107 return 0;
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1108}
1109
ff70e601 1110AVInputFormat asf_demuxer = {
c9a65ca8 1111 "asf",
bde15e74 1112 NULL_IF_CONFIG_SMALL("ASF format"),
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1113 sizeof(ASFContext),
1114 asf_probe,
1115 asf_read_header,
1116 asf_read_packet,
1117 asf_read_close,
2a10020b 1118 asf_read_seek,
8d14a25c 1119 asf_read_pts,
719e721a 1120 .metadata_conv = ff_asf_metadata_conv,
c9a65ca8 1121};