changing AVCodecContext codec -> *codec in AVStream so additions to AVCodecContext...
[libav.git] / libavformat / asf.c
CommitLineData
de6d9b64 1/*
542993b0 2 * ASF compatible decoder.
19720f15 3 * Copyright (c) 2000, 2001 Fabrice Bellard.
de6d9b64 4 *
19720f15
FB
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
de6d9b64 9 *
19720f15 10 * This library is distributed in the hope that it will be useful,
de6d9b64 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19720f15
FB
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
de6d9b64 14 *
19720f15
FB
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
de6d9b64 18 */
de6d9b64
FB
19#include "avformat.h"
20#include "avi.h"
f80c1ac0 21#include "mpegaudio.h"
542993b0 22#include "asf.h"
de6d9b64 23
580fb5e7
MN
24#undef NDEBUG
25#include <assert.h>
26
615b92fd
KA
27#define FRAME_HEADER_SIZE 17
28// Fix Me! FRAME_HEADER_SIZE may be different.
29
de6d9b64
FB
30static const GUID index_guid = {
31 0x33000890, 0xe5b1, 0x11cf, { 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb },
32};
33
de6d9b64
FB
34/**********************************/
35/* decoding */
36
37//#define DEBUG
38
39#ifdef DEBUG
5082f759
FR
40#define PRINT_IF_GUID(g,cmp) \
41if (!memcmp(g, &cmp, sizeof(GUID))) \
42 printf("(GUID: %s) ", #cmp)
43
de6d9b64
FB
44static void print_guid(const GUID *g)
45{
46 int i;
5082f759
FR
47 PRINT_IF_GUID(g, asf_header);
48 else PRINT_IF_GUID(g, file_header);
49 else PRINT_IF_GUID(g, stream_header);
50 else PRINT_IF_GUID(g, audio_stream);
51 else PRINT_IF_GUID(g, audio_conceal_none);
52 else PRINT_IF_GUID(g, video_stream);
53 else PRINT_IF_GUID(g, video_conceal_none);
54 else PRINT_IF_GUID(g, comment_header);
55 else PRINT_IF_GUID(g, codec_comment_header);
56 else PRINT_IF_GUID(g, codec_comment1_header);
57 else PRINT_IF_GUID(g, data_header);
58 else PRINT_IF_GUID(g, index_guid);
59 else PRINT_IF_GUID(g, head1_guid);
60 else PRINT_IF_GUID(g, head2_guid);
61 else PRINT_IF_GUID(g, my_guid);
62 else
63 printf("(GUID: unknown) ");
de6d9b64 64 printf("0x%08x, 0x%04x, 0x%04x, {", g->v1, g->v2, g->v3);
2a10020b 65 for(i=0;i<8;i++)
de6d9b64
FB
66 printf(" 0x%02x,", g->v4[i]);
67 printf("}\n");
68}
5082f759 69#undef PRINT_IF_GUID(g,cmp)
de6d9b64
FB
70#endif
71
72static void get_guid(ByteIOContext *s, GUID *g)
73{
74 int i;
75
76 g->v1 = get_le32(s);
77 g->v2 = get_le16(s);
78 g->v3 = get_le16(s);
79 for(i=0;i<8;i++)
80 g->v4[i] = get_byte(s);
81}
82
83#if 0
84static void get_str16(ByteIOContext *pb, char *buf, int buf_size)
85{
86 int len, c;
87 char *q;
88
89 len = get_le16(pb);
90 q = buf;
91 while (len > 0) {
92 c = get_le16(pb);
93 if ((q - buf) < buf_size - 1)
94 *q++ = c;
95 len--;
96 }
97 *q = '\0';
98}
99#endif
100
101static void get_str16_nolen(ByteIOContext *pb, int len, char *buf, int buf_size)
102{
103 int c;
104 char *q;
105
106 q = buf;
107 while (len > 0) {
108 c = get_le16(pb);
109 if ((q - buf) < buf_size - 1)
110 *q++ = c;
111 len-=2;
112 }
113 *q = '\0';
114}
115
c9a65ca8
FB
116static int asf_probe(AVProbeData *pd)
117{
118 GUID g;
119 const unsigned char *p;
120 int i;
121
122 /* check file header */
123 if (pd->buf_size <= 32)
124 return 0;
125 p = pd->buf;
126 g.v1 = p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
127 p += 4;
128 g.v2 = p[0] | (p[1] << 8);
129 p += 2;
130 g.v3 = p[0] | (p[1] << 8);
131 p += 2;
132 for(i=0;i<8;i++)
133 g.v4[i] = *p++;
134
135 if (!memcmp(&g, &asf_header, sizeof(GUID)))
136 return AVPROBE_SCORE_MAX;
137 else
138 return 0;
139}
140
de6d9b64
FB
141static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
142{
c9a65ca8 143 ASFContext *asf = s->priv_data;
de6d9b64
FB
144 GUID g;
145 ByteIOContext *pb = &s->pb;
146 AVStream *st;
147 ASFStream *asf_st;
e095026a 148 int size, i;
0c1a9eda 149 int64_t gsize;
de6d9b64 150
de6d9b64
FB
151 get_guid(pb, &g);
152 if (memcmp(&g, &asf_header, sizeof(GUID)))
153 goto fail;
154 get_le64(pb);
155 get_le32(pb);
156 get_byte(pb);
157 get_byte(pb);
2141dc37 158 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
de6d9b64
FB
159 for(;;) {
160 get_guid(pb, &g);
161 gsize = get_le64(pb);
162#ifdef DEBUG
163 printf("%08Lx: ", url_ftell(pb) - 24);
164 print_guid(&g);
165 printf(" size=0x%Lx\n", gsize);
166#endif
167 if (gsize < 24)
168 goto fail;
169 if (!memcmp(&g, &file_header, sizeof(GUID))) {
2a10020b
ZK
170 get_guid(pb, &asf->hdr.guid);
171 asf->hdr.file_size = get_le64(pb);
172 asf->hdr.create_time = get_le64(pb);
173 asf->hdr.packets_count = get_le64(pb);
174 asf->hdr.play_time = get_le64(pb);
175 asf->hdr.send_time = get_le64(pb);
176 asf->hdr.preroll = get_le32(pb);
177 asf->hdr.ignore = get_le32(pb);
178 asf->hdr.flags = get_le32(pb);
179 asf->hdr.min_pktsize = get_le32(pb);
180 asf->hdr.max_pktsize = get_le32(pb);
181 asf->hdr.max_bitrate = get_le32(pb);
2141dc37
ZK
182 asf->packet_size = asf->hdr.max_pktsize;
183 asf->nb_packets = asf->hdr.packets_count;
de6d9b64 184 } else if (!memcmp(&g, &stream_header, sizeof(GUID))) {
0ffd77b9 185 int type, total_size, type_specific_size, sizeX;
de6d9b64 186 unsigned int tag1;
0c1a9eda 187 int64_t pos1, pos2;
2a10020b 188
de6d9b64
FB
189 pos1 = url_ftell(pb);
190
247eadca 191 st = av_new_stream(s, 0);
de6d9b64
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;
6c55fd79 200 st->duration = asf->hdr.send_time /
c0df9d75 201 (10000000 / 1000) - st->start_time;
de6d9b64
FB
202 get_guid(pb, &g);
203 if (!memcmp(&g, &audio_stream, sizeof(GUID))) {
204 type = CODEC_TYPE_AUDIO;
205 } else if (!memcmp(&g, &video_stream, sizeof(GUID))) {
206 type = CODEC_TYPE_VIDEO;
207 } else {
208 goto fail;
209 }
210 get_guid(pb, &g);
211 total_size = get_le64(pb);
2e7973bb 212 type_specific_size = get_le32(pb);
de6d9b64 213 get_le32(pb);
2a10020b
ZK
214 st->id = get_le16(pb) & 0x7f; /* stream id */
215 // mapping of asf ID to AV stream ID;
247eadca 216 asf->asfid2avid[st->id] = s->nb_streams - 1;
2a10020b 217
de6d9b64 218 get_le32(pb);
01f4895c 219 st->codec->codec_type = type;
de6d9b64 220 if (type == CODEC_TYPE_AUDIO) {
01f4895c 221 get_wav_header(pb, st->codec, type_specific_size);
afda223c 222 st->need_parsing = 1;
2a10020b
ZK
223 /* We have to init the frame size at some point .... */
224 pos2 = url_ftell(pb);
2141dc37 225 if (gsize > (pos2 + 8 - pos1 + 24)) {
2a10020b
ZK
226 asf_st->ds_span = get_byte(pb);
227 asf_st->ds_packet_size = get_le16(pb);
228 asf_st->ds_chunk_size = get_le16(pb);
229 asf_st->ds_data_size = get_le16(pb);
230 asf_st->ds_silence_data = get_byte(pb);
231 }
232 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
233 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
234 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
2141dc37 235 if (asf_st->ds_span > 1) {
2a10020b
ZK
236 if (!asf_st->ds_chunk_size
237 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1))
238 asf_st->ds_span = 0; // disable descrambling
239 }
01f4895c 240 switch (st->codec->codec_id) {
80783dc2 241 case CODEC_ID_MP3:
01f4895c 242 st->codec->frame_size = MPA_FRAME_SIZE;
f80c1ac0
PG
243 break;
244 case CODEC_ID_PCM_S16LE:
245 case CODEC_ID_PCM_S16BE:
246 case CODEC_ID_PCM_U16LE:
247 case CODEC_ID_PCM_U16BE:
248 case CODEC_ID_PCM_S8:
249 case CODEC_ID_PCM_U8:
250 case CODEC_ID_PCM_ALAW:
251 case CODEC_ID_PCM_MULAW:
01f4895c 252 st->codec->frame_size = 1;
f80c1ac0
PG
253 break;
254 default:
255 /* This is probably wrong, but it prevents a crash later */
01f4895c 256 st->codec->frame_size = 1;
f80c1ac0
PG
257 break;
258 }
de6d9b64 259 } else {
2141dc37 260 get_le32(pb);
de6d9b64
FB
261 get_le32(pb);
262 get_byte(pb);
263 size = get_le16(pb); /* size */
0ffd77b9 264 sizeX= get_le32(pb); /* size */
01f4895c
MN
265 st->codec->width = get_le32(pb);
266 st->codec->height = get_le32(pb);
2a10020b 267 /* not available for asf */
de6d9b64 268 get_le16(pb); /* panes */
01f4895c 269 st->codec->bits_per_sample = get_le16(pb); /* depth */
de6d9b64 270 tag1 = get_le32(pb);
2141dc37 271 url_fskip(pb, 20);
0ffd77b9
MN
272// av_log(NULL, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
273 size= sizeX;
2141dc37 274 if (size > 40) {
01f4895c
MN
275 st->codec->extradata_size = size - 40;
276 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
277 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
2141dc37 278 }
5e29abf8
RT
279
280 /* Extract palette from extradata if bpp <= 8 */
281 /* This code assumes that extradata contains only palette */
282 /* This is true for all paletted codecs implemented in ffmpeg */
01f4895c
MN
283 if (st->codec->extradata_size && (st->codec->bits_per_sample <= 8)) {
284 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
5e29abf8 285#ifdef WORDS_BIGENDIAN
01f4895c
MN
286 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
287 st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
5e29abf8 288#else
01f4895c
MN
289 memcpy(st->codec->palctrl->palette, st->codec->extradata,
290 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
5e29abf8 291#endif
01f4895c 292 st->codec->palctrl->palette_changed = 1;
5e29abf8
RT
293 }
294
01f4895c
MN
295 st->codec->codec_tag = tag1;
296 st->codec->codec_id = codec_get_id(codec_bmp_tags, tag1);
afbb5ce4
MN
297 if(tag1 == MKTAG('D', 'V', 'R', ' '))
298 st->need_parsing = 1;
de6d9b64
FB
299 }
300 pos2 = url_ftell(pb);
301 url_fskip(pb, gsize - (pos2 - pos1 + 24));
302 } else if (!memcmp(&g, &data_header, sizeof(GUID))) {
303 break;
304 } else if (!memcmp(&g, &comment_header, sizeof(GUID))) {
305 int len1, len2, len3, len4, len5;
306
307 len1 = get_le16(pb);
308 len2 = get_le16(pb);
309 len3 = get_le16(pb);
310 len4 = get_le16(pb);
311 len5 = get_le16(pb);
312 get_str16_nolen(pb, len1, s->title, sizeof(s->title));
313 get_str16_nolen(pb, len2, s->author, sizeof(s->author));
314 get_str16_nolen(pb, len3, s->copyright, sizeof(s->copyright));
315 get_str16_nolen(pb, len4, s->comment, sizeof(s->comment));
2141dc37 316 url_fskip(pb, len5);
d13431cd
KK
317 } else if (!memcmp(&g, &extended_content_header, sizeof(GUID))) {
318 int desc_count, i;
319
320 desc_count = get_le16(pb);
321 for(i=0;i<desc_count;i++)
322 {
323 int name_len,value_type,value_len,value_num = 0;
324 char *name, *value;
325
326 name_len = get_le16(pb);
327 name = (char *)av_mallocz(name_len);
328 get_str16_nolen(pb, name_len, name, name_len);
329 value_type = get_le16(pb);
330 value_len = get_le16(pb);
331 if ((value_type == 0) || (value_type == 1)) // unicode or byte
332 {
333 value = (char *)av_mallocz(value_len);
334 get_str16_nolen(pb, value_len, value, value_len);
0ecca7a4 335 if (strcmp(name,"WM/AlbumTitle")==0) { pstrcpy(s->album, sizeof(s->album), value); }
d13431cd
KK
336 av_free(value);
337 }
724dc20c 338 if ((value_type >= 2) && (value_type <= 5)) // boolean or DWORD or QWORD or WORD
d13431cd
KK
339 {
340 if (value_type==2) value_num = get_le32(pb);
341 if (value_type==3) value_num = get_le32(pb);
342 if (value_type==4) value_num = get_le64(pb);
343 if (value_type==5) value_num = get_le16(pb);
344 if (strcmp(name,"WM/Track")==0) s->track = value_num + 1;
345 if (strcmp(name,"WM/TrackNumber")==0) s->track = value_num;
346 }
347 av_free(name);
348 }
de6d9b64
FB
349#if 0
350 } else if (!memcmp(&g, &head1_guid, sizeof(GUID))) {
351 int v1, v2;
352 get_guid(pb, &g);
353 v1 = get_le32(pb);
354 v2 = get_le16(pb);
355 } else if (!memcmp(&g, &codec_comment_header, sizeof(GUID))) {
356 int len, v1, n, num;
357 char str[256], *q;
358 char tag[16];
359
360 get_guid(pb, &g);
361 print_guid(&g);
2a10020b 362
de6d9b64
FB
363 n = get_le32(pb);
364 for(i=0;i<n;i++) {
365 num = get_le16(pb); /* stream number */
366 get_str16(pb, str, sizeof(str));
367 get_str16(pb, str, sizeof(str));
368 len = get_le16(pb);
369 q = tag;
370 while (len > 0) {
371 v1 = get_byte(pb);
372 if ((q - tag) < sizeof(tag) - 1)
373 *q++ = v1;
374 len--;
375 }
376 *q = '\0';
377 }
378#endif
379 } else if (url_feof(pb)) {
380 goto fail;
381 } else {
382 url_fseek(pb, gsize - 24, SEEK_CUR);
383 }
384 }
385 get_guid(pb, &g);
386 get_le64(pb);
387 get_byte(pb);
388 get_byte(pb);
2141dc37
ZK
389 if (url_feof(pb))
390 goto fail;
391 asf->data_offset = url_ftell(pb);
de6d9b64
FB
392 asf->packet_size_left = 0;
393
394 return 0;
395
396 fail:
4c3dff6d 397 for(i=0;i<s->nb_streams;i++) {
de6d9b64 398 AVStream *st = s->streams[i];
4c3dff6d 399 if (st) {
2141dc37 400 av_free(st->priv_data);
01f4895c 401 av_free(st->codec->extradata);
4c3dff6d 402 }
1ea4f593 403 av_free(st);
de6d9b64 404 }
de6d9b64
FB
405 return -1;
406}
407
2a10020b
ZK
408#define DO_2BITS(bits, var, defval) \
409 switch (bits & 3) \
410 { \
411 case 3: var = get_le32(pb); rsize += 4; break; \
412 case 2: var = get_le16(pb); rsize += 2; break; \
413 case 1: var = get_byte(pb); rsize++; break; \
414 default: var = defval; break; \
415 }
416
de6d9b64
FB
417static int asf_get_packet(AVFormatContext *s)
418{
419 ASFContext *asf = s->priv_data;
420 ByteIOContext *pb = &s->pb;
2a10020b 421 uint32_t packet_length, padsize;
29962fea
MN
422 int rsize = 9;
423 int c;
424
8d14a25c
MN
425 if((url_ftell(&s->pb) - s->data_offset) % asf->packet_size)
426 return -1;
29962fea
MN
427 assert((url_ftell(&s->pb) - s->data_offset) % asf->packet_size == 0);
428
429 c = get_byte(pb);
1359c2d4 430 if (c != 0x82) {
5acdd6e6 431 if (!url_feof(pb))
bc874dae 432 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%lld\n", c, url_ftell(pb));
2a10020b
ZK
433 }
434 if ((c & 0x0f) == 2) { // always true for now
1359c2d4 435 if (get_le16(pb) != 0) {
5acdd6e6 436 if (!url_feof(pb))
bc874dae 437 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
0bd586c5 438 return AVERROR_IO;
2a10020b 439 }
29962fea
MN
440 rsize+=2;
441/* }else{
442 if (!url_feof(pb))
443 printf("ff asf bad header %x at:%lld\n", c, url_ftell(pb));
0bd586c5 444 return AVERROR_IO;*/
de6d9b64 445 }
2a10020b
ZK
446
447 asf->packet_flags = get_byte(pb);
448 asf->packet_property = get_byte(pb);
449
450 DO_2BITS(asf->packet_flags >> 5, packet_length, asf->packet_size);
451 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
452 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
453
454 asf->packet_timestamp = get_le32(pb);
de6d9b64 455 get_le16(pb); /* duration */
2141dc37 456 // rsize has at least 11 bytes which have to be present
2a10020b
ZK
457
458 if (asf->packet_flags & 0x01) {
459 asf->packet_segsizetype = get_byte(pb); rsize++;
460 asf->packet_segments = asf->packet_segsizetype & 0x3f;
461 } else {
462 asf->packet_segments = 1;
463 asf->packet_segsizetype = 0x80;
464 }
465 asf->packet_size_left = packet_length - padsize - rsize;
acbe6cfa
ZK
466 if (packet_length < asf->hdr.min_pktsize)
467 padsize += asf->hdr.min_pktsize - packet_length;
2a10020b 468 asf->packet_padsize = padsize;
de6d9b64 469#ifdef DEBUG
2a10020b 470 printf("packet: size=%d padsize=%d left=%d\n", asf->packet_size, asf->packet_padsize, asf->packet_size_left);
de6d9b64 471#endif
de6d9b64
FB
472 return 0;
473}
474
475static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
476{
477 ASFContext *asf = s->priv_data;
2a10020b 478 ASFStream *asf_st = 0;
de6d9b64 479 ByteIOContext *pb = &s->pb;
1359c2d4 480 //static int pc = 0;
2a10020b
ZK
481 for (;;) {
482 int rsize = 0;
2141dc37 483 if (asf->packet_size_left < FRAME_HEADER_SIZE
1359c2d4 484 || asf->packet_segments < 1) {
2a10020b 485 //asf->packet_size_left <= asf->packet_padsize) {
1359c2d4
ZK
486 int ret = asf->packet_size_left + asf->packet_padsize;
487 //printf("PacketLeftSize:%d Pad:%d Pos:%Ld\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
488 /* fail safe */
489 url_fskip(pb, ret);
82b9e4a2 490 asf->packet_pos= url_ftell(&s->pb);
2a10020b
ZK
491 ret = asf_get_packet(s);
492 //printf("READ ASF PACKET %d r:%d c:%d\n", ret, asf->packet_size_left, pc++);
5acdd6e6 493 if (ret < 0 || url_feof(pb))
0bd586c5 494 return AVERROR_IO;
2141dc37 495 asf->packet_time_start = 0;
2a10020b
ZK
496 continue;
497 }
2141dc37 498 if (asf->packet_time_start == 0) {
2a10020b 499 /* read frame header */
1359c2d4
ZK
500 int num = get_byte(pb);
501 asf->packet_segments--;
2a10020b
ZK
502 rsize++;
503 asf->packet_key_frame = (num & 0x80) >> 7;
504 asf->stream_index = asf->asfid2avid[num & 0x7f];
2a10020b
ZK
505 // sequence should be ignored!
506 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
507 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
508 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
82b9e4a2 509//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);
2a10020b 510 if (asf->packet_replic_size > 1) {
1305a9d5 511 assert(asf->packet_replic_size >= 8);
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512 // it should be always at least 8 bytes - FIXME validate
513 asf->packet_obj_size = get_le32(pb);
514 asf->packet_frag_timestamp = get_le32(pb); // timestamp
acbe6cfa
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515 if (asf->packet_replic_size > 8)
516 url_fskip(pb, asf->packet_replic_size - 8);
2a10020b 517 rsize += asf->packet_replic_size; // FIXME - check validity
1305a9d5 518 } else if (asf->packet_replic_size==1){
acbe6cfa 519 // multipacket - frag_offset is begining timestamp
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520 asf->packet_time_start = asf->packet_frag_offset;
521 asf->packet_frag_offset = 0;
522 asf->packet_frag_timestamp = asf->packet_timestamp;
2141dc37 523
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524 asf->packet_time_delta = get_byte(pb);
525 rsize++;
526 }else{
527 assert(asf->packet_replic_size==0);
528 }
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529 if (asf->packet_flags & 0x01) {
530 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
acbe6cfa 531#undef DO_2BITS
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532 //printf("Fragsize %d\n", asf->packet_frag_size);
533 } else {
534 asf->packet_frag_size = asf->packet_size_left - rsize;
535 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
536 }
1359c2d4 537 if (asf->packet_replic_size == 1) {
2141dc37 538 asf->packet_multi_size = asf->packet_frag_size;
1359c2d4 539 if (asf->packet_multi_size > asf->packet_size_left) {
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540 asf->packet_segments = 0;
541 continue;
542 }
543 }
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544 asf->packet_size_left -= rsize;
545 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
1359c2d4 546
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547 if (asf->stream_index < 0
548 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
549 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
550 ) {
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551 asf->packet_time_start = 0;
552 /* unhandled packet (should not happen) */
553 url_fskip(pb, asf->packet_frag_size);
554 asf->packet_size_left -= asf->packet_frag_size;
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555 if(asf->stream_index < 0)
556 av_log(s, AV_LOG_ERROR, "ff asf skip %d %d\n", asf->packet_frag_size, num & 0x7f);
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557 continue;
558 }
559 asf->asf_st = s->streams[asf->stream_index]->priv_data;
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560 }
561 asf_st = asf->asf_st;
562
563 if ((asf->packet_frag_offset != asf_st->frag_offset
564 || (asf->packet_frag_offset
565 && asf->packet_seq != asf_st->seq)) // seq should be ignored
566 ) {
567 /* cannot continue current packet: free it */
568 // FIXME better check if packet was already allocated
bc874dae 569 av_log(s, AV_LOG_INFO, "ff asf parser skips: %d - %d o:%d - %d %d %d fl:%d\n",
2a10020b 570 asf_st->pkt.size,
2141dc37 571 asf->packet_obj_size,
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572 asf->packet_frag_offset, asf_st->frag_offset,
573 asf->packet_seq, asf_st->seq, asf->packet_frag_size);
2141dc37 574 if (asf_st->pkt.size)
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575 av_free_packet(&asf_st->pkt);
576 asf_st->frag_offset = 0;
577 if (asf->packet_frag_offset != 0) {
2a10020b 578 url_fskip(pb, asf->packet_frag_size);
160d679c 579 av_log(s, AV_LOG_INFO, "ff asf parser skipping %db\n", asf->packet_frag_size);
2141dc37 580 asf->packet_size_left -= asf->packet_frag_size;
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ZK
581 continue;
582 }
583 }
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ZK
584 if (asf->packet_replic_size == 1) {
585 // frag_offset is here used as the begining timestamp
2a10020b 586 asf->packet_frag_timestamp = asf->packet_time_start;
2141dc37 587 asf->packet_time_start += asf->packet_time_delta;
2a10020b 588 asf->packet_obj_size = asf->packet_frag_size = get_byte(pb);
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589 asf->packet_size_left--;
590 asf->packet_multi_size--;
591 if (asf->packet_multi_size < asf->packet_obj_size)
592 {
593 asf->packet_time_start = 0;
594 url_fskip(pb, asf->packet_multi_size);
595 asf->packet_size_left -= asf->packet_multi_size;
596 continue;
597 }
598 asf->packet_multi_size -= asf->packet_obj_size;
599 //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);
2a10020b 600 }
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601 if (asf_st->frag_offset == 0) {
602 /* new packet */
603 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
604 asf_st->seq = asf->packet_seq;
6c55fd79 605 asf_st->pkt.pts = asf->packet_frag_timestamp;
2a10020b 606 asf_st->pkt.stream_index = asf->stream_index;
2692067a 607 asf_st->pkt.pos =
1305a9d5
MN
608 asf_st->packet_pos= asf->packet_pos;
609//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
82b9e4a2 610//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY,
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611//s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size);
612 if (s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO)
38376f00 613 asf->packet_key_frame = 1;
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614 if (asf->packet_key_frame)
615 asf_st->pkt.flags |= PKT_FLAG_KEY;
616 }
617
618 /* read data */
619 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
620 // asf->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
621 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
2141dc37
ZK
622 asf->packet_size_left -= asf->packet_frag_size;
623 if (asf->packet_size_left < 0)
624 continue;
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625 get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
626 asf->packet_frag_size);
627 asf_st->frag_offset += asf->packet_frag_size;
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628 /* test if whole packet is read */
629 if (asf_st->frag_offset == asf_st->pkt.size) {
630 /* return packet */
631 if (asf_st->ds_span > 1) {
2141dc37 632 /* packet descrambling */
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633 char* newdata = av_malloc(asf_st->pkt.size);
634 if (newdata) {
635 int offset = 0;
636 while (offset < asf_st->pkt.size) {
637 int off = offset / asf_st->ds_chunk_size;
638 int row = off / asf_st->ds_span;
639 int col = off % asf_st->ds_span;
640 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
641 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
642 memcpy(newdata + offset,
643 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
644 asf_st->ds_chunk_size);
645 offset += asf_st->ds_chunk_size;
646 }
647 av_free(asf_st->pkt.data);
648 asf_st->pkt.data = newdata;
649 }
650 }
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651 asf_st->frag_offset = 0;
652 memcpy(pkt, &asf_st->pkt, sizeof(AVPacket));
653 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
654 asf_st->pkt.size = 0;
655 asf_st->pkt.data = 0;
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656 break; // packet completed
657 }
de6d9b64 658 }
de6d9b64
FB
659 return 0;
660}
661
662static int asf_read_close(AVFormatContext *s)
663{
de6d9b64
FB
664 int i;
665
666 for(i=0;i<s->nb_streams;i++) {
4c3dff6d
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667 AVStream *st = s->streams[i];
668 av_free(st->priv_data);
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669 av_free(st->codec->extradata);
670 av_free(st->codec->palctrl);
de6d9b64 671 }
de6d9b64
FB
672 return 0;
673}
674
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675// Added to support seeking after packets have been read
676// If information is not reset, read_packet fails due to
677// leftover information from previous reads
678static void asf_reset_header(AVFormatContext *s)
679{
680 ASFContext *asf = s->priv_data;
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681 ASFStream *asf_st;
682 int i;
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683
684 asf->packet_nb_frames = 0;
685 asf->packet_timestamp_start = -1;
686 asf->packet_timestamp_end = -1;
687 asf->packet_size_left = 0;
688 asf->packet_segments = 0;
689 asf->packet_flags = 0;
690 asf->packet_property = 0;
691 asf->packet_timestamp = 0;
692 asf->packet_segsizetype = 0;
693 asf->packet_segments = 0;
694 asf->packet_seq = 0;
695 asf->packet_replic_size = 0;
696 asf->packet_key_frame = 0;
697 asf->packet_padsize = 0;
698 asf->packet_frag_offset = 0;
699 asf->packet_frag_size = 0;
700 asf->packet_frag_timestamp = 0;
701 asf->packet_multi_size = 0;
702 asf->packet_obj_size = 0;
703 asf->packet_time_delta = 0;
704 asf->packet_time_start = 0;
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705
706 for(i=0; i<s->nb_streams; i++){
707 asf_st= s->streams[i]->priv_data;
708 av_free_packet(&asf_st->pkt);
709 asf_st->frag_offset=0;
710 asf_st->seq=0;
711 }
712 asf->asf_st= NULL;
38376f00
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713}
714
8d14a25c 715static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
38376f00
KK
716{
717 ASFContext *asf = s->priv_data;
718 AVPacket pkt1, *pkt = &pkt1;
82b9e4a2 719 ASFStream *asf_st;
580fb5e7 720 int64_t pts;
82b9e4a2 721 int64_t pos= *ppos;
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722 int i;
723 int64_t start_pos[s->nb_streams];
724
725 for(i=0; i<s->nb_streams; i++){
726 start_pos[i]= pos;
727 }
8d14a25c
MN
728
729 pos= (pos+asf->packet_size-1-s->data_offset)/asf->packet_size*asf->packet_size+ s->data_offset;
730 *ppos= pos;
731 url_fseek(&s->pb, pos, SEEK_SET);
732
82b9e4a2 733//printf("asf_read_pts\n");
82b9e4a2 734 asf_reset_header(s);
3e9245a9 735 for(;;){
82b9e4a2 736 if (av_read_frame(s, pkt) < 0){
bc874dae 737 av_log(s, AV_LOG_INFO, "seek failed\n");
580fb5e7 738 return AV_NOPTS_VALUE;
82b9e4a2 739 }
8d14a25c 740
cdd5034f 741 pts= pkt->pts * 1000 / AV_TIME_BASE;
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742
743 av_free_packet(pkt);
3e9245a9
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744 if(pkt->flags&PKT_FLAG_KEY){
745 i= pkt->stream_index;
746
747 asf_st= s->streams[i]->priv_data;
748
749 assert((asf_st->packet_pos - s->data_offset) % asf->packet_size == 0);
8d14a25c 750 pos= asf_st->packet_pos;
09646bab 751
3e9245a9 752 av_add_index_entry(s->streams[i], pos, pts, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
8d14a25c 753 start_pos[i]= asf_st->packet_pos + 1;
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754
755 if(pkt->stream_index == stream_index)
756 break;
757 }
758 }
759
760 *ppos= pos;
82b9e4a2 761//printf("found keyframe at %Ld stream %d stamp:%Ld\n", *ppos, stream_index, pts);
580fb5e7
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762
763 return pts;
38376f00
KK
764}
765
3ba1438d 766static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
2a10020b 767{
afda223c 768 ASFContext *asf = s->priv_data;
580fb5e7 769
a602556e 770 if (asf->packet_size <= 0)
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771 return -1;
772
3ba1438d 773 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
8d14a25c 774 return -1;
3e9245a9 775
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776 asf_reset_header(s);
777 return 0;
2a10020b
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778}
779
0570bf06 780static AVInputFormat asf_iformat = {
c9a65ca8
FB
781 "asf",
782 "asf format",
783 sizeof(ASFContext),
784 asf_probe,
785 asf_read_header,
786 asf_read_packet,
787 asf_read_close,
2a10020b 788 asf_read_seek,
8d14a25c 789 asf_read_pts,
c9a65ca8
FB
790};
791
764ef400 792#ifdef CONFIG_ENCODERS
542993b0
KA
793 extern AVOutputFormat asf_oformat;
794 extern AVOutputFormat asf_stream_oformat;
764ef400 795#endif //CONFIG_ENCODERS
8b3c13f9 796
c9a65ca8
FB
797int asf_init(void)
798{
799 av_register_input_format(&asf_iformat);
764ef400 800#ifdef CONFIG_ENCODERS
c9a65ca8 801 av_register_output_format(&asf_oformat);
8b3c13f9 802 av_register_output_format(&asf_stream_oformat);
764ef400 803#endif //CONFIG_ENCODERS
c9a65ca8
FB
804 return 0;
805}