libgsm_ms codec depends on libgsm
[libav.git] / libavformat / asf.c
CommitLineData
de6d9b64 1/*
7fbde343 2 * ASF compatible demuxer
19720f15 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 */
de6d9b64 21#include "avformat.h"
9d9f4119 22#include "riff.h"
f80c1ac0 23#include "mpegaudio.h"
542993b0 24#include "asf.h"
db5c43b4 25#include "common.h"
de6d9b64 26
580fb5e7
MN
27#undef NDEBUG
28#include <assert.h>
29
615b92fd 30#define FRAME_HEADER_SIZE 17
115329f1 31// Fix Me! FRAME_HEADER_SIZE may be different.
615b92fd 32
de6d9b64 33static const GUID index_guid = {
24c14d6d 34 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
de6d9b64
FB
35};
36
de6d9b64
FB
37/**********************************/
38/* decoding */
39
40//#define DEBUG
41
42#ifdef DEBUG
5082f759
FR
43#define PRINT_IF_GUID(g,cmp) \
44if (!memcmp(g, &cmp, sizeof(GUID))) \
45 printf("(GUID: %s) ", #cmp)
46
de6d9b64
FB
47static void print_guid(const GUID *g)
48{
49 int i;
5082f759
FR
50 PRINT_IF_GUID(g, asf_header);
51 else PRINT_IF_GUID(g, file_header);
52 else PRINT_IF_GUID(g, stream_header);
53 else PRINT_IF_GUID(g, audio_stream);
54 else PRINT_IF_GUID(g, audio_conceal_none);
55 else PRINT_IF_GUID(g, video_stream);
56 else PRINT_IF_GUID(g, video_conceal_none);
ae38261e 57 else PRINT_IF_GUID(g, command_stream);
5082f759
FR
58 else PRINT_IF_GUID(g, comment_header);
59 else PRINT_IF_GUID(g, codec_comment_header);
60 else PRINT_IF_GUID(g, codec_comment1_header);
61 else PRINT_IF_GUID(g, data_header);
62 else PRINT_IF_GUID(g, index_guid);
63 else PRINT_IF_GUID(g, head1_guid);
64 else PRINT_IF_GUID(g, head2_guid);
65 else PRINT_IF_GUID(g, my_guid);
88141c91
MN
66 else PRINT_IF_GUID(g, ext_stream_header);
67 else PRINT_IF_GUID(g, extended_content_header);
68 else PRINT_IF_GUID(g, ext_stream_embed_stream_header);
69 else PRINT_IF_GUID(g, ext_stream_audio_stream);
30e88789 70 else PRINT_IF_GUID(g, metadata_header);
5082f759
FR
71 else
72 printf("(GUID: unknown) ");
24c14d6d
MN
73 for(i=0;i<16;i++)
74 printf(" 0x%02x,", (*g)[i]);
de6d9b64
FB
75 printf("}\n");
76}
6df84c3a 77#undef PRINT_IF_GUID
de6d9b64
FB
78#endif
79
80static void get_guid(ByteIOContext *s, GUID *g)
81{
24c14d6d
MN
82 assert(sizeof(*g) == 16);
83 get_buffer(s, g, sizeof(*g));
de6d9b64
FB
84}
85
86#if 0
87static void get_str16(ByteIOContext *pb, char *buf, int buf_size)
88{
89 int len, c;
90 char *q;
91
92 len = get_le16(pb);
93 q = buf;
94 while (len > 0) {
95 c = get_le16(pb);
96 if ((q - buf) < buf_size - 1)
97 *q++ = c;
98 len--;
99 }
100 *q = '\0';
101}
102#endif
103
104static void get_str16_nolen(ByteIOContext *pb, int len, char *buf, int buf_size)
105{
db5c43b4
ZM
106 char* q = buf;
107 len /= 2;
108 while (len--) {
109 uint8_t tmp;
110 PUT_UTF8(get_le16(pb), tmp, if (q - buf < buf_size - 1) *q++ = tmp;)
de6d9b64
FB
111 }
112 *q = '\0';
113}
114
c9a65ca8
FB
115static int asf_probe(AVProbeData *pd)
116{
c9a65ca8
FB
117 /* check file header */
118 if (pd->buf_size <= 32)
119 return 0;
c9a65ca8 120
24c14d6d 121 if (!memcmp(pd->buf, &asf_header, sizeof(GUID)))
c9a65ca8
FB
122 return AVPROBE_SCORE_MAX;
123 else
124 return 0;
125}
126
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MN
127static int get_value(ByteIOContext *pb, int type){
128 switch(type){
129 case 2: return get_le32(pb);
130 case 3: return get_le32(pb);
131 case 4: return get_le64(pb);
132 case 5: return get_le16(pb);
133 default:return INT_MIN;
134 }
135}
136
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FB
137static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
138{
c9a65ca8 139 ASFContext *asf = s->priv_data;
de6d9b64
FB
140 GUID g;
141 ByteIOContext *pb = &s->pb;
142 AVStream *st;
143 ASFStream *asf_st;
e095026a 144 int size, i;
0c1a9eda 145 int64_t gsize;
30e88789
MN
146 AVRational dar[128];
147
148 memset(dar, 0, sizeof(dar));
de6d9b64 149
de6d9b64
FB
150 get_guid(pb, &g);
151 if (memcmp(&g, &asf_header, sizeof(GUID)))
152 goto fail;
153 get_le64(pb);
154 get_le32(pb);
155 get_byte(pb);
156 get_byte(pb);
2141dc37 157 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
de6d9b64
FB
158 for(;;) {
159 get_guid(pb, &g);
160 gsize = get_le64(pb);
161#ifdef DEBUG
949b1a13 162 printf("%08"PRIx64": ", url_ftell(pb) - 24);
de6d9b64 163 print_guid(&g);
949b1a13 164 printf(" size=0x%"PRIx64"\n", gsize);
de6d9b64
FB
165#endif
166 if (gsize < 24)
167 goto fail;
168 if (!memcmp(&g, &file_header, sizeof(GUID))) {
2a10020b 169 get_guid(pb, &asf->hdr.guid);
bb270c08
DB
170 asf->hdr.file_size = get_le64(pb);
171 asf->hdr.create_time = get_le64(pb);
6bb2a2df 172 asf->nb_packets = get_le64(pb);
bb270c08
DB
173 asf->hdr.send_time = get_le64(pb);
174 asf->hdr.play_time = get_le64(pb);
175 asf->hdr.preroll = get_le32(pb);
176 asf->hdr.ignore = get_le32(pb);
177 asf->hdr.flags = get_le32(pb);
178 asf->hdr.min_pktsize = get_le32(pb);
179 asf->hdr.max_pktsize = get_le32(pb);
180 asf->hdr.max_bitrate = get_le32(pb);
181 asf->packet_size = asf->hdr.max_pktsize;
de6d9b64 182 } else if (!memcmp(&g, &stream_header, sizeof(GUID))) {
7ad5455c
MN
183 int type, type_specific_size, sizeX;
184 uint64_t total_size;
de6d9b64 185 unsigned int tag1;
0c1a9eda 186 int64_t pos1, pos2;
88141c91 187 int test_for_ext_stream_audio;
2a10020b 188
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FB
189 pos1 = url_ftell(pb);
190
247eadca 191 st = av_new_stream(s, 0);
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FB
192 if (!st)
193 goto fail;
9ee91c2f 194 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
de6d9b64
FB
195 asf_st = av_mallocz(sizeof(ASFStream));
196 if (!asf_st)
197 goto fail;
198 st->priv_data = asf_st;
c0df9d75 199 st->start_time = asf->hdr.preroll;
73fe1052
RM
200 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
201 st->duration = asf->hdr.send_time /
202 (10000000 / 1000) - st->start_time;
203 }
de6d9b64 204 get_guid(pb, &g);
88141c91
MN
205
206 test_for_ext_stream_audio = 0;
de6d9b64
FB
207 if (!memcmp(&g, &audio_stream, sizeof(GUID))) {
208 type = CODEC_TYPE_AUDIO;
209 } else if (!memcmp(&g, &video_stream, sizeof(GUID))) {
210 type = CODEC_TYPE_VIDEO;
ae38261e
MB
211 } else if (!memcmp(&g, &command_stream, sizeof(GUID))) {
212 type = CODEC_TYPE_UNKNOWN;
88141c91
MN
213 } else if (!memcmp(&g, &ext_stream_embed_stream_header, sizeof(GUID))) {
214 test_for_ext_stream_audio = 1;
215 type = CODEC_TYPE_UNKNOWN;
de6d9b64
FB
216 } else {
217 goto fail;
218 }
219 get_guid(pb, &g);
220 total_size = get_le64(pb);
2e7973bb 221 type_specific_size = get_le32(pb);
de6d9b64 222 get_le32(pb);
bb270c08 223 st->id = get_le16(pb) & 0x7f; /* stream id */
2a10020b 224 // mapping of asf ID to AV stream ID;
247eadca 225 asf->asfid2avid[st->id] = s->nb_streams - 1;
2a10020b 226
de6d9b64 227 get_le32(pb);
88141c91
MN
228
229 if (test_for_ext_stream_audio) {
230 get_guid(pb, &g);
231 if (!memcmp(&g, &ext_stream_audio_stream, sizeof(GUID))) {
232 type = CODEC_TYPE_AUDIO;
233 get_guid(pb, &g);
234 get_le32(pb);
235 get_le32(pb);
236 get_le32(pb);
237 get_guid(pb, &g);
238 get_le32(pb);
239 }
240 }
241
bb270c08 242 st->codec->codec_type = type;
de6d9b64 243 if (type == CODEC_TYPE_AUDIO) {
01f4895c 244 get_wav_header(pb, st->codec, type_specific_size);
afda223c 245 st->need_parsing = 1;
bb270c08
DB
246 /* We have to init the frame size at some point .... */
247 pos2 = url_ftell(pb);
248 if (gsize > (pos2 + 8 - pos1 + 24)) {
249 asf_st->ds_span = get_byte(pb);
250 asf_st->ds_packet_size = get_le16(pb);
251 asf_st->ds_chunk_size = get_le16(pb);
6bb2a2df
MN
252 get_le16(pb); //ds_data_size
253 get_byte(pb); //ds_silence_data
bb270c08
DB
254 }
255 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
256 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
257 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
258 if (asf_st->ds_span > 1) {
259 if (!asf_st->ds_chunk_size
05219463
MN
260 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
261 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
bb270c08
DB
262 asf_st->ds_span = 0; // disable descrambling
263 }
01f4895c 264 switch (st->codec->codec_id) {
80783dc2 265 case CODEC_ID_MP3:
01f4895c 266 st->codec->frame_size = MPA_FRAME_SIZE;
f80c1ac0
PG
267 break;
268 case CODEC_ID_PCM_S16LE:
269 case CODEC_ID_PCM_S16BE:
270 case CODEC_ID_PCM_U16LE:
271 case CODEC_ID_PCM_U16BE:
272 case CODEC_ID_PCM_S8:
273 case CODEC_ID_PCM_U8:
274 case CODEC_ID_PCM_ALAW:
275 case CODEC_ID_PCM_MULAW:
01f4895c 276 st->codec->frame_size = 1;
f80c1ac0
PG
277 break;
278 default:
279 /* This is probably wrong, but it prevents a crash later */
01f4895c 280 st->codec->frame_size = 1;
f80c1ac0
PG
281 break;
282 }
88141c91 283 } else if (type == CODEC_TYPE_VIDEO) {
bb270c08 284 get_le32(pb);
de6d9b64
FB
285 get_le32(pb);
286 get_byte(pb);
287 size = get_le16(pb); /* size */
0ffd77b9 288 sizeX= get_le32(pb); /* size */
01f4895c 289 st->codec->width = get_le32(pb);
bb270c08 290 st->codec->height = get_le32(pb);
2a10020b 291 /* not available for asf */
de6d9b64 292 get_le16(pb); /* panes */
bb270c08 293 st->codec->bits_per_sample = get_le16(pb); /* depth */
de6d9b64 294 tag1 = get_le32(pb);
bb270c08 295 url_fskip(pb, 20);
0ffd77b9
MN
296// av_log(NULL, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
297 size= sizeX;
bb270c08
DB
298 if (size > 40) {
299 st->codec->extradata_size = size - 40;
300 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
301 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
302 }
5e29abf8
RT
303
304 /* Extract palette from extradata if bpp <= 8 */
305 /* This code assumes that extradata contains only palette */
306 /* This is true for all paletted codecs implemented in ffmpeg */
01f4895c
MN
307 if (st->codec->extradata_size && (st->codec->bits_per_sample <= 8)) {
308 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
5e29abf8 309#ifdef WORDS_BIGENDIAN
01f4895c
MN
310 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
311 st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
5e29abf8 312#else
01f4895c
MN
313 memcpy(st->codec->palctrl->palette, st->codec->extradata,
314 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
5e29abf8 315#endif
01f4895c 316 st->codec->palctrl->palette_changed = 1;
5e29abf8
RT
317 }
318
01f4895c 319 st->codec->codec_tag = tag1;
bb270c08 320 st->codec->codec_id = codec_get_id(codec_bmp_tags, tag1);
afbb5ce4
MN
321 if(tag1 == MKTAG('D', 'V', 'R', ' '))
322 st->need_parsing = 1;
de6d9b64
FB
323 }
324 pos2 = url_ftell(pb);
325 url_fskip(pb, gsize - (pos2 - pos1 + 24));
326 } else if (!memcmp(&g, &data_header, sizeof(GUID))) {
b6eaae39 327 asf->data_object_offset = url_ftell(pb);
73fe1052
RM
328 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
329 if (!(asf->hdr.flags & 0x01) && gsize != (uint64_t)-1 && gsize >= 24) {
b6eaae39
KED
330 asf->data_object_size = gsize - 24;
331 } else {
332 asf->data_object_size = (uint64_t)-1;
333 }
de6d9b64
FB
334 break;
335 } else if (!memcmp(&g, &comment_header, sizeof(GUID))) {
336 int len1, len2, len3, len4, len5;
337
338 len1 = get_le16(pb);
339 len2 = get_le16(pb);
340 len3 = get_le16(pb);
341 len4 = get_le16(pb);
342 len5 = get_le16(pb);
4e15cc8b
MN
343 get_str16_nolen(pb, len1, s->title , sizeof(s->title));
344 get_str16_nolen(pb, len2, s->author , sizeof(s->author));
de6d9b64 345 get_str16_nolen(pb, len3, s->copyright, sizeof(s->copyright));
4e15cc8b 346 get_str16_nolen(pb, len4, s->comment , sizeof(s->comment));
bb270c08 347 url_fskip(pb, len5);
d13431cd
KK
348 } else if (!memcmp(&g, &extended_content_header, sizeof(GUID))) {
349 int desc_count, i;
350
351 desc_count = get_le16(pb);
352 for(i=0;i<desc_count;i++)
353 {
052aa2ad
SH
354 int name_len,value_type,value_len;
355 uint64_t value_num = 0;
d045b8c1 356 char name[1024];
d13431cd
KK
357
358 name_len = get_le16(pb);
d045b8c1 359 get_str16_nolen(pb, name_len, name, sizeof(name));
d13431cd
KK
360 value_type = get_le16(pb);
361 value_len = get_le16(pb);
362 if ((value_type == 0) || (value_type == 1)) // unicode or byte
363 {
5e2a4855
MN
364 if (!strcmp(name,"WM/AlbumTitle")) get_str16_nolen(pb, value_len, s->album, sizeof(s->album));
365 else if(!strcmp(name,"WM/Genre" )) get_str16_nolen(pb, value_len, s->genre, sizeof(s->genre));
366 else url_fskip(pb, value_len);
d13431cd 367 }
724dc20c 368 if ((value_type >= 2) && (value_type <= 5)) // boolean or DWORD or QWORD or WORD
d13431cd 369 {
30e88789 370 value_num= get_value(pb, value_type);
4e15cc8b
MN
371 if (!strcmp(name,"WM/Track" )) s->track = value_num + 1;
372 if (!strcmp(name,"WM/TrackNumber")) s->track = value_num;
d13431cd 373 }
d13431cd 374 }
30e88789
MN
375 } else if (!memcmp(&g, &metadata_header, sizeof(GUID))) {
376 int n, stream_num, name_len, value_len, value_type, value_num;
377 n = get_le16(pb);
378
379 for(i=0;i<n;i++) {
380 char name[1024];
381
382 get_le16(pb); //lang_list_index
383 stream_num= get_le16(pb);
384 name_len= get_le16(pb);
385 value_type= get_le16(pb);
386 value_len= get_le32(pb);
387
388 get_str16_nolen(pb, name_len, name, sizeof(name));
389//av_log(NULL, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
390 value_num= get_le16(pb);//we should use get_value() here but it doesnt work 2 is le16 here but le32 elsewhere
391 url_fskip(pb, value_len - 2);
392
393 if(stream_num<128){
394 if (!strcmp(name, "AspectRatioX")) dar[stream_num].num= value_num;
395 else if(!strcmp(name, "AspectRatioY")) dar[stream_num].den= value_num;
396 }
397 }
88141c91
MN
398 } else if (!memcmp(&g, &ext_stream_header, sizeof(GUID))) {
399 int ext_len, payload_ext_ct, stream_ct;
400 uint32_t ext_d;
1bd86246 401 int64_t pos_ex_st;
88141c91
MN
402 pos_ex_st = url_ftell(pb);
403
de3ae959
MN
404 get_le64(pb); // starttime
405 get_le64(pb); // endtime
406 get_le32(pb); // leak-datarate
407 get_le32(pb); // bucket-datasize
408 get_le32(pb); // init-bucket-fullness
409 get_le32(pb); // alt-leak-datarate
410 get_le32(pb); // alt-bucket-datasize
411 get_le32(pb); // alt-init-bucket-fullness
412 get_le32(pb); // max-object-size
413 get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
414 get_le16(pb); // stream-num
415 get_le16(pb); // stream-language-id-index
416 get_le64(pb); // avg frametime in 100ns units
417 stream_ct = get_le16(pb); //stream-name-count
418 payload_ext_ct = get_le16(pb); //payload-extension-system-count
88141c91
MN
419
420 for (i=0; i<stream_ct; i++){
421 get_le16(pb);
422 ext_len = get_le16(pb);
423 url_fseek(pb, ext_len, SEEK_CUR);
424 }
425
426 for (i=0; i<payload_ext_ct; i++){
427 get_guid(pb, &g);
428 ext_d=get_le16(pb);
429 ext_len=get_le32(pb);
430 url_fseek(pb, ext_len, SEEK_CUR);
431 }
432
433 // there could be a optional stream properties object to follow
434 // if so the next iteration will pick it up
de6d9b64
FB
435 } else if (!memcmp(&g, &head1_guid, sizeof(GUID))) {
436 int v1, v2;
437 get_guid(pb, &g);
438 v1 = get_le32(pb);
439 v2 = get_le16(pb);
88141c91 440#if 0
de6d9b64
FB
441 } else if (!memcmp(&g, &codec_comment_header, sizeof(GUID))) {
442 int len, v1, n, num;
443 char str[256], *q;
444 char tag[16];
445
446 get_guid(pb, &g);
447 print_guid(&g);
2a10020b 448
de6d9b64
FB
449 n = get_le32(pb);
450 for(i=0;i<n;i++) {
451 num = get_le16(pb); /* stream number */
452 get_str16(pb, str, sizeof(str));
453 get_str16(pb, str, sizeof(str));
454 len = get_le16(pb);
455 q = tag;
456 while (len > 0) {
457 v1 = get_byte(pb);
458 if ((q - tag) < sizeof(tag) - 1)
459 *q++ = v1;
460 len--;
461 }
462 *q = '\0';
463 }
464#endif
465 } else if (url_feof(pb)) {
466 goto fail;
467 } else {
468 url_fseek(pb, gsize - 24, SEEK_CUR);
469 }
470 }
471 get_guid(pb, &g);
472 get_le64(pb);
473 get_byte(pb);
474 get_byte(pb);
2141dc37
ZK
475 if (url_feof(pb))
476 goto fail;
477 asf->data_offset = url_ftell(pb);
de6d9b64
FB
478 asf->packet_size_left = 0;
479
30e88789
MN
480
481 for(i=0; i<128; i++){
482 int stream_num= asf->asfid2avid[i];
483 if(stream_num>=0 && dar[i].num>0 && dar[i].den>0){
484 AVCodecContext *codec= s->streams[stream_num]->codec;
a836a2c8
ZM
485 av_reduce(&codec->sample_aspect_ratio.num,
486 &codec->sample_aspect_ratio.den,
487 dar[i].num, dar[i].den, INT_MAX);
30e88789
MN
488//av_log(NULL, AV_LOG_ERROR, "dar %d:%d sar=%d:%d\n", dar[i].num, dar[i].den, codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
489 }
490 }
491
de6d9b64
FB
492 return 0;
493
494 fail:
4c3dff6d 495 for(i=0;i<s->nb_streams;i++) {
de6d9b64 496 AVStream *st = s->streams[i];
bb270c08
DB
497 if (st) {
498 av_free(st->priv_data);
01f4895c 499 av_free(st->codec->extradata);
bb270c08 500 }
1ea4f593 501 av_free(st);
de6d9b64 502 }
de6d9b64
FB
503 return -1;
504}
505
2a10020b
ZK
506#define DO_2BITS(bits, var, defval) \
507 switch (bits & 3) \
508 { \
509 case 3: var = get_le32(pb); rsize += 4; break; \
510 case 2: var = get_le16(pb); rsize += 2; break; \
511 case 1: var = get_byte(pb); rsize++; break; \
512 default: var = defval; break; \
513 }
514
f7835507
MN
515/**
516 *
517 * @return <0 in case of an error
518 */
de6d9b64
FB
519static int asf_get_packet(AVFormatContext *s)
520{
521 ASFContext *asf = s->priv_data;
522 ByteIOContext *pb = &s->pb;
2a10020b 523 uint32_t packet_length, padsize;
29962fea 524 int rsize = 9;
0fd9e6f3
MN
525 int c, d, e, off;
526
527 off= (url_ftell(&s->pb) - s->data_offset) % asf->packet_size + 3;
528
529 c=d=e=-1;
530 while(off-- > 0){
531 c=d; d=e;
532 e= get_byte(pb);
533 if(c == 0x82 && !d && !e)
534 break;
535 }
115329f1 536
1359c2d4 537 if (c != 0x82) {
5acdd6e6 538 if (!url_feof(pb))
bb270c08 539 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
2a10020b
ZK
540 }
541 if ((c & 0x0f) == 2) { // always true for now
0fd9e6f3 542 if (d || e) {
5acdd6e6 543 if (!url_feof(pb))
bb270c08 544 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
f7835507 545 return -1;
bb270c08 546 }
0fd9e6f3
MN
547 d= get_byte(pb);
548 e= get_byte(pb);
29962fea
MN
549 rsize+=2;
550/* }else{
551 if (!url_feof(pb))
949b1a13 552 printf("ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
bb270c08 553 return AVERROR_IO;*/
de6d9b64 554 }
2a10020b 555
0fd9e6f3
MN
556 asf->packet_flags = d;
557 asf->packet_property = e;
2a10020b
ZK
558
559 DO_2BITS(asf->packet_flags >> 5, packet_length, asf->packet_size);
560 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
561 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
562
5b11e081
MN
563 //the following checks prevent overflows and infinite loops
564 if(packet_length >= (1U<<29)){
565 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb));
ceba96cb 566 return -1;
5b11e081 567 }
92216453 568 if(padsize >= packet_length){
5b11e081 569 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, url_ftell(pb));
ceba96cb 570 return -1;
5b11e081
MN
571 }
572
2a10020b 573 asf->packet_timestamp = get_le32(pb);
de6d9b64 574 get_le16(pb); /* duration */
2141dc37 575 // rsize has at least 11 bytes which have to be present
2a10020b
ZK
576
577 if (asf->packet_flags & 0x01) {
bb270c08 578 asf->packet_segsizetype = get_byte(pb); rsize++;
2a10020b
ZK
579 asf->packet_segments = asf->packet_segsizetype & 0x3f;
580 } else {
bb270c08 581 asf->packet_segments = 1;
2a10020b
ZK
582 asf->packet_segsizetype = 0x80;
583 }
584 asf->packet_size_left = packet_length - padsize - rsize;
acbe6cfa
ZK
585 if (packet_length < asf->hdr.min_pktsize)
586 padsize += asf->hdr.min_pktsize - packet_length;
2a10020b 587 asf->packet_padsize = padsize;
de6d9b64 588#ifdef DEBUG
2a10020b 589 printf("packet: size=%d padsize=%d left=%d\n", asf->packet_size, asf->packet_padsize, asf->packet_size_left);
de6d9b64 590#endif
de6d9b64
FB
591 return 0;
592}
593
ae60a857
MN
594/**
595 *
596 * @return <0 if error
597 */
598static int asf_read_frame_header(AVFormatContext *s){
599 ASFContext *asf = s->priv_data;
600 ByteIOContext *pb = &s->pb;
601 int rsize = 1;
602 int num = get_byte(pb);
559a55ad 603 int64_t ts0, ts1;
ae60a857
MN
604
605 asf->packet_segments--;
606 asf->packet_key_frame = num >> 7;
607 asf->stream_index = asf->asfid2avid[num & 0x7f];
608 // sequence should be ignored!
609 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
610 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
611 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
612//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);
613 if (asf->packet_replic_size >= 8) {
614 asf->packet_obj_size = get_le32(pb);
615 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
616 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
617 return -1;
618 }
619 asf->packet_frag_timestamp = get_le32(pb); // timestamp
559a55ad
MN
620 if(asf->packet_replic_size >= 8+38+4){
621// for(i=0; i<asf->packet_replic_size-8; i++)
622// av_log(s, AV_LOG_DEBUG, "%02X ",get_byte(pb));
623// av_log(s, AV_LOG_DEBUG, "\n");
624 url_fskip(pb, 10);
625 ts0= get_le64(pb);
626 ts1= get_le64(pb);
627 url_fskip(pb, 12);
628 get_le32(pb);
629 url_fskip(pb, asf->packet_replic_size - 8 - 38 - 4);
630 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
631 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
632 }else
633 url_fskip(pb, asf->packet_replic_size - 8);
ae60a857
MN
634 rsize += asf->packet_replic_size; // FIXME - check validity
635 } else if (asf->packet_replic_size==1){
636 // multipacket - frag_offset is begining timestamp
637 asf->packet_time_start = asf->packet_frag_offset;
638 asf->packet_frag_offset = 0;
639 asf->packet_frag_timestamp = asf->packet_timestamp;
640
641 asf->packet_time_delta = get_byte(pb);
642 rsize++;
643 }else if(asf->packet_replic_size!=0){
644 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
645 return -1;
646 }
647 if (asf->packet_flags & 0x01) {
648 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
13f7e4b9
MN
649 if(asf->packet_frag_size > asf->packet_size_left - rsize){
650 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n");
651 return -1;
652 }
ae60a857
MN
653 //printf("Fragsize %d\n", asf->packet_frag_size);
654 } else {
655 asf->packet_frag_size = asf->packet_size_left - rsize;
656 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
657 }
658 if (asf->packet_replic_size == 1) {
659 asf->packet_multi_size = asf->packet_frag_size;
660 if (asf->packet_multi_size > asf->packet_size_left)
661 return -1;
662 }
663 asf->packet_size_left -= rsize;
664 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
665
666 return 0;
667}
668
de6d9b64
FB
669static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
670{
671 ASFContext *asf = s->priv_data;
2a10020b 672 ASFStream *asf_st = 0;
de6d9b64 673 ByteIOContext *pb = &s->pb;
1359c2d4 674 //static int pc = 0;
2a10020b 675 for (;;) {
ceba96cb
MN
676 if(url_feof(pb))
677 return AVERROR_IO;
bb270c08
DB
678 if (asf->packet_size_left < FRAME_HEADER_SIZE
679 || asf->packet_segments < 1) {
680 //asf->packet_size_left <= asf->packet_padsize) {
681 int ret = asf->packet_size_left + asf->packet_padsize;
949b1a13 682 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
5b11e081 683 assert(ret>=0);
bb270c08
DB
684 /* fail safe */
685 url_fskip(pb, ret);
b04d5d31 686
82b9e4a2 687 asf->packet_pos= url_ftell(&s->pb);
b6eaae39
KED
688 if (asf->data_object_size != (uint64_t)-1 &&
689 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
690 return AVERROR_IO; /* Do not exceed the size of the data object */
bb270c08
DB
691 ret = asf_get_packet(s);
692 //printf("READ ASF PACKET %d r:%d c:%d\n", ret, asf->packet_size_left, pc++);
ceba96cb
MN
693 if (ret < 0)
694 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
2141dc37 695 asf->packet_time_start = 0;
2a10020b 696 continue;
bb270c08
DB
697 }
698 if (asf->packet_time_start == 0) {
ae60a857
MN
699 if(asf_read_frame_header(s) < 0){
700 asf->packet_segments= 0;
236116cb 701 continue;
1305a9d5 702 }
bb270c08 703 if (asf->stream_index < 0
f3356e9c
MN
704 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
705 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
706 ) {
1359c2d4 707 asf->packet_time_start = 0;
bb270c08
DB
708 /* unhandled packet (should not happen) */
709 url_fskip(pb, asf->packet_frag_size);
710 asf->packet_size_left -= asf->packet_frag_size;
b9866ebc 711 if(asf->stream_index < 0)
ae60a857 712 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
1359c2d4 713 continue;
bb270c08
DB
714 }
715 asf->asf_st = s->streams[asf->stream_index]->priv_data;
716 }
717 asf_st = asf->asf_st;
718
bb270c08
DB
719 if (asf->packet_replic_size == 1) {
720 // frag_offset is here used as the begining timestamp
721 asf->packet_frag_timestamp = asf->packet_time_start;
722 asf->packet_time_start += asf->packet_time_delta;
723 asf->packet_obj_size = asf->packet_frag_size = get_byte(pb);
724 asf->packet_size_left--;
2141dc37 725 asf->packet_multi_size--;
bb270c08
DB
726 if (asf->packet_multi_size < asf->packet_obj_size)
727 {
728 asf->packet_time_start = 0;
729 url_fskip(pb, asf->packet_multi_size);
730 asf->packet_size_left -= asf->packet_multi_size;
2141dc37 731 continue;
bb270c08
DB
732 }
733 asf->packet_multi_size -= asf->packet_obj_size;
734 //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);
735 }
f8f0a0bd
MN
736 if ( asf_st->pkt.size != asf->packet_obj_size
737 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
200026aa
MN
738 if(asf_st->pkt.data){
739 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
740 asf_st->frag_offset = 0;
741 av_free_packet(&asf_st->pkt);
742 }
bb270c08
DB
743 /* new packet */
744 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
745 asf_st->seq = asf->packet_seq;
746 asf_st->pkt.pts = asf->packet_frag_timestamp;
747 asf_st->pkt.stream_index = asf->stream_index;
115329f1
DB
748 asf_st->pkt.pos =
749 asf_st->packet_pos= asf->packet_pos;
750//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
82b9e4a2 751//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY,
01f4895c 752//s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size);
bb270c08
DB
753 if (s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO)
754 asf->packet_key_frame = 1;
755 if (asf->packet_key_frame)
756 asf_st->pkt.flags |= PKT_FLAG_KEY;
757 }
758
759 /* read data */
760 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
761 // asf->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
762 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
763 asf->packet_size_left -= asf->packet_frag_size;
764 if (asf->packet_size_left < 0)
2141dc37 765 continue;
4c71d727
MN
766
767 if( asf->packet_frag_offset >= asf_st->pkt.size
768 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
769 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
770 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
771 continue;
772 }
773
bb270c08
DB
774 get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
775 asf->packet_frag_size);
776 asf_st->frag_offset += asf->packet_frag_size;
777 /* test if whole packet is read */
778 if (asf_st->frag_offset == asf_st->pkt.size) {
779 /* return packet */
780 if (asf_st->ds_span > 1) {
05219463
MN
781 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
782 av_log(s, AV_LOG_ERROR, "pkt.size != ds_packet_size * ds_span\n");
783 }else{
bb270c08 784 /* packet descrambling */
191e8ca7 785 uint8_t *newdata = av_malloc(asf_st->pkt.size);
bb270c08
DB
786 if (newdata) {
787 int offset = 0;
788 while (offset < asf_st->pkt.size) {
789 int off = offset / asf_st->ds_chunk_size;
790 int row = off / asf_st->ds_span;
791 int col = off % asf_st->ds_span;
792 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
793 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
05219463
MN
794
795 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
796 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
bb270c08
DB
797 memcpy(newdata + offset,
798 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
799 asf_st->ds_chunk_size);
800 offset += asf_st->ds_chunk_size;
801 }
802 av_free(asf_st->pkt.data);
803 asf_st->pkt.data = newdata;
804 }
05219463 805 }
bb270c08
DB
806 }
807 asf_st->frag_offset = 0;
b83e83b9 808 *pkt= asf_st->pkt;
bb270c08
DB
809 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
810 asf_st->pkt.size = 0;
811 asf_st->pkt.data = 0;
812 break; // packet completed
813 }
de6d9b64 814 }
de6d9b64
FB
815 return 0;
816}
817
818static int asf_read_close(AVFormatContext *s)
819{
de6d9b64
FB
820 int i;
821
822 for(i=0;i<s->nb_streams;i++) {
bb270c08
DB
823 AVStream *st = s->streams[i];
824 av_free(st->priv_data);
1ae7518d 825 av_free(st->codec->palctrl);
de6d9b64 826 }
de6d9b64
FB
827 return 0;
828}
829
38376f00
KK
830// Added to support seeking after packets have been read
831// If information is not reset, read_packet fails due to
832// leftover information from previous reads
833static void asf_reset_header(AVFormatContext *s)
834{
835 ASFContext *asf = s->priv_data;
82b9e4a2
MN
836 ASFStream *asf_st;
837 int i;
38376f00
KK
838
839 asf->packet_nb_frames = 0;
38376f00
KK
840 asf->packet_size_left = 0;
841 asf->packet_segments = 0;
842 asf->packet_flags = 0;
843 asf->packet_property = 0;
844 asf->packet_timestamp = 0;
845 asf->packet_segsizetype = 0;
846 asf->packet_segments = 0;
847 asf->packet_seq = 0;
848 asf->packet_replic_size = 0;
849 asf->packet_key_frame = 0;
850 asf->packet_padsize = 0;
851 asf->packet_frag_offset = 0;
852 asf->packet_frag_size = 0;
853 asf->packet_frag_timestamp = 0;
854 asf->packet_multi_size = 0;
855 asf->packet_obj_size = 0;
856 asf->packet_time_delta = 0;
857 asf->packet_time_start = 0;
115329f1 858
82b9e4a2
MN
859 for(i=0; i<s->nb_streams; i++){
860 asf_st= s->streams[i]->priv_data;
861 av_free_packet(&asf_st->pkt);
862 asf_st->frag_offset=0;
863 asf_st->seq=0;
864 }
865 asf->asf_st= NULL;
38376f00
KK
866}
867
8d14a25c 868static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
38376f00
KK
869{
870 ASFContext *asf = s->priv_data;
871 AVPacket pkt1, *pkt = &pkt1;
82b9e4a2 872 ASFStream *asf_st;
580fb5e7 873 int64_t pts;
82b9e4a2 874 int64_t pos= *ppos;
3e9245a9
MN
875 int i;
876 int64_t start_pos[s->nb_streams];
115329f1 877
3e9245a9
MN
878 for(i=0; i<s->nb_streams; i++){
879 start_pos[i]= pos;
880 }
115329f1 881
8d14a25c
MN
882 pos= (pos+asf->packet_size-1-s->data_offset)/asf->packet_size*asf->packet_size+ s->data_offset;
883 *ppos= pos;
884 url_fseek(&s->pb, pos, SEEK_SET);
115329f1 885
82b9e4a2 886//printf("asf_read_pts\n");
82b9e4a2 887 asf_reset_header(s);
3e9245a9 888 for(;;){
82b9e4a2 889 if (av_read_frame(s, pkt) < 0){
0b93103a 890 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
bb270c08 891 return AV_NOPTS_VALUE;
82b9e4a2 892 }
115329f1 893
38cf2a72 894 pts= pkt->pts;
580fb5e7
MN
895
896 av_free_packet(pkt);
3e9245a9
MN
897 if(pkt->flags&PKT_FLAG_KEY){
898 i= pkt->stream_index;
899
900 asf_st= s->streams[i]->priv_data;
901
0fd9e6f3 902// assert((asf_st->packet_pos - s->data_offset) % asf->packet_size == 0);
8d14a25c 903 pos= asf_st->packet_pos;
09646bab 904
52e54612 905 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
8d14a25c 906 start_pos[i]= asf_st->packet_pos + 1;
115329f1 907
3e9245a9
MN
908 if(pkt->stream_index == stream_index)
909 break;
910 }
911 }
912
913 *ppos= pos;
949b1a13 914//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
580fb5e7
MN
915
916 return pts;
38376f00
KK
917}
918
56c96a22
MN
919static void asf_build_simple_index(AVFormatContext *s, int stream_index)
920{
921 GUID g;
922 ASFContext *asf = s->priv_data;
923 int64_t gsize, itime;
924 int64_t pos, current_pos, index_pts;
925 int i;
926 int pct,ict;
927
928 current_pos = url_ftell(&s->pb);
929
930 url_fseek(&s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
931 get_guid(&s->pb, &g);
932 if (!memcmp(&g, &index_guid, sizeof(GUID))) {
933 gsize = get_le64(&s->pb);
934 get_guid(&s->pb, &g);
935 itime=get_le64(&s->pb);
936 pct=get_le32(&s->pb);
937 ict=get_le32(&s->pb);
ccd3228e 938 av_log(NULL, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
56c96a22
MN
939
940 for (i=0;i<ict;i++){
941 int pktnum=get_le32(&s->pb);
942 int pktct =get_le16(&s->pb);
943 av_log(NULL, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct);
944
945 pos=s->data_offset + asf->packet_size*(int64_t)pktnum;
946 index_pts=av_rescale(itime, i, 10000);
947
948 av_add_index_entry(s->streams[stream_index], pos, index_pts, asf->packet_size, 0, AVINDEX_KEYFRAME);
949 }
52e54612 950 asf->index_read= 1;
56c96a22
MN
951 }
952 url_fseek(&s->pb, current_pos, SEEK_SET);
953}
954
3ba1438d 955static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
2a10020b 956{
afda223c 957 ASFContext *asf = s->priv_data;
56c96a22
MN
958 AVStream *st = s->streams[stream_index];
959 int64_t pos;
960 int index;
115329f1 961
a602556e 962 if (asf->packet_size <= 0)
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963 return -1;
964
52e54612 965 if (!asf->index_read)
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966 asf_build_simple_index(s, stream_index);
967
52e54612 968 if(!(asf->index_read && st->index_entries)){
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969 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
970 return -1;
971 }else{
972 index= av_index_search_timestamp(st, pts, flags);
973 if(index<0)
974 return -1;
975
976 /* find the position */
977 pos = st->index_entries[index].pos;
978 pts = st->index_entries[index].timestamp;
979
980 // various attempts to find key frame have failed so far
981 // asf_reset_header(s);
982 // url_fseek(&s->pb, pos, SEEK_SET);
983 // key_pos = pos;
984 // for(i=0;i<16;i++){
985 // pos = url_ftell(&s->pb);
986 // if (av_read_frame(s, &pkt) < 0){
987 // av_log(s, AV_LOG_INFO, "seek failed\n");
988 // return -1;
989 // }
990 // asf_st = s->streams[stream_index]->priv_data;
991 // pos += st->parser->frame_offset;
992 //
993 // if (pkt.size > b) {
994 // b = pkt.size;
995 // key_pos = pos;
996 // }
997 //
998 // av_free_packet(&pkt);
999 // }
1000
1001 /* do the seek */
ccd3228e 1002 av_log(NULL, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
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1003 url_fseek(&s->pb, pos, SEEK_SET);
1004 }
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1005 asf_reset_header(s);
1006 return 0;
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1007}
1008
ff70e601 1009AVInputFormat asf_demuxer = {
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1010 "asf",
1011 "asf format",
1012 sizeof(ASFContext),
1013 asf_probe,
1014 asf_read_header,
1015 asf_read_packet,
1016 asf_read_close,
2a10020b 1017 asf_read_seek,
8d14a25c 1018 asf_read_pts,
c9a65ca8 1019};