2 * ASF compatible demuxer
3 * Copyright (c) 2000, 2001 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "libavutil/common.h"
25 #include "libavutil/avstring.h"
26 #include "libavcodec/mpegaudio.h"
31 #include "avlanguage.h"
33 void ff_mms_set_stream_selection(URLContext
*h
, AVFormatContext
*format
);
38 #define FRAME_HEADER_SIZE 17
39 // Fix Me! FRAME_HEADER_SIZE may be different.
41 static const ff_asf_guid index_guid
= {
42 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
45 static const ff_asf_guid stream_bitrate_guid
= { /* (http://get.to/sdp) */
46 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
48 /**********************************/
51 static int guidcmp(const void *g1
, const void *g2
)
53 return memcmp(g1
, g2
, sizeof(ff_asf_guid
));
57 #define PRINT_IF_GUID(g,cmp) \
58 if (!guidcmp(g, &cmp)) \
59 dprintf(NULL, "(GUID: %s) ", #cmp)
61 static void print_guid(const ff_asf_guid
*g
)
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
);
76 else PRINT_IF_GUID(g
, index_guid
);
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
);
85 else PRINT_IF_GUID(g
, stream_bitrate_guid
);
86 else PRINT_IF_GUID(g
, ff_asf_language_guid
);
88 dprintf(NULL
, "(GUID: unknown) ");
90 dprintf(NULL
, " 0x%02x,", (*g
)[i
]);
98 static void get_guid(ByteIOContext
*s
, ff_asf_guid
*g
)
100 assert(sizeof(*g
) == 16);
101 get_buffer(s
, *g
, sizeof(*g
));
105 static void get_str16(ByteIOContext
*pb
, char *buf
, int buf_size
)
114 if ((q
- buf
) < buf_size
- 1)
122 static void get_str16_nolen(ByteIOContext
*pb
, int len
, char *buf
, int buf_size
)
125 for (; len
> 1; len
-= 2) {
127 PUT_UTF8(get_le16(pb
), tmp
, if (q
- buf
< buf_size
- 1) *q
++ = tmp
;)
134 static int asf_probe(AVProbeData
*pd
)
136 /* check file header */
137 if (!guidcmp(pd
->buf
, &ff_asf_header
))
138 return AVPROBE_SCORE_MAX
;
143 static int get_value(ByteIOContext
*pb
, int 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
;
153 static void get_tag(AVFormatContext
*s
, const char *key
, int type
, int len
)
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
);
162 url_fskip(s
->pb
, len
);
165 if (!strncmp(key
, "WM/", 3))
167 av_metadata_set(&s
->metadata
, key
, value
);
170 static int asf_read_header(AVFormatContext
*s
, AVFormatParameters
*ap
)
172 ASFContext
*asf
= s
->priv_data
;
174 ByteIOContext
*pb
= s
->pb
;
180 uint32_t bitrate
[128];
182 memset(dar
, 0, sizeof(dar
));
183 memset(bitrate
, 0, sizeof(bitrate
));
186 if (guidcmp(&g
, &ff_asf_header
))
192 memset(&asf
->asfid2avid
, -1, sizeof(asf
->asfid2avid
));
195 gsize
= get_le64(pb
);
196 dprintf(s
, "%08"PRIx64
": ", url_ftell(pb
) - 24);
198 dprintf(s
, " size=0x%"PRIx64
"\n", gsize
);
199 if (!guidcmp(&g
, &ff_asf_data_header
)) {
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;
205 asf
->data_object_size
= (uint64_t)-1;
211 if (!guidcmp(&g
, &ff_asf_file_header
)) {
212 get_guid(pb
, &asf
->hdr
.guid
);
213 asf
->hdr
.file_size
= get_le64(pb
);
214 asf
->hdr
.create_time
= get_le64(pb
);
215 asf
->nb_packets
= get_le64(pb
);
216 asf
->hdr
.play_time
= get_le64(pb
);
217 asf
->hdr
.send_time
= get_le64(pb
);
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 s
->packet_size
= asf
->hdr
.max_pktsize
;
225 } else if (!guidcmp(&g
, &ff_asf_stream_header
)) {
227 int type_specific_size
, sizeX
;
230 int64_t pos1
, pos2
, start_time
;
231 int test_for_ext_stream_audio
, is_dvr_ms_audio
=0;
233 pos1
= url_ftell(pb
);
235 st
= av_new_stream(s
, 0);
237 return AVERROR(ENOMEM
);
238 av_set_pts_info(st
, 32, 1, 1000); /* 32 bit pts in ms */
239 asf_st
= av_mallocz(sizeof(ASFStream
));
241 return AVERROR(ENOMEM
);
242 st
->priv_data
= asf_st
;
243 start_time
= asf
->hdr
.preroll
;
245 asf_st
->stream_language_index
= 128; // invalid stream index means no language info
247 if(!(asf
->hdr
.flags
& 0x01)) { // if we aren't streaming...
248 st
->duration
= asf
->hdr
.send_time
/
249 (10000000 / 1000) - start_time
;
253 test_for_ext_stream_audio
= 0;
254 if (!guidcmp(&g
, &ff_asf_audio_stream
)) {
255 type
= CODEC_TYPE_AUDIO
;
256 } else if (!guidcmp(&g
, &ff_asf_video_stream
)) {
257 type
= CODEC_TYPE_VIDEO
;
258 } else if (!guidcmp(&g
, &ff_asf_command_stream
)) {
259 type
= CODEC_TYPE_DATA
;
260 } else if (!guidcmp(&g
, &ff_asf_ext_stream_embed_stream_header
)) {
261 test_for_ext_stream_audio
= 1;
262 type
= CODEC_TYPE_UNKNOWN
;
267 total_size
= get_le64(pb
);
268 type_specific_size
= get_le32(pb
);
270 st
->id
= get_le16(pb
) & 0x7f; /* stream id */
271 // mapping of asf ID to AV stream ID;
272 asf
->asfid2avid
[st
->id
] = s
->nb_streams
- 1;
276 if (test_for_ext_stream_audio
) {
278 if (!guidcmp(&g
, &ff_asf_ext_stream_audio_stream
)) {
279 type
= CODEC_TYPE_AUDIO
;
290 st
->codec
->codec_type
= type
;
291 if (type
== CODEC_TYPE_AUDIO
) {
292 ff_get_wav_header(pb
, st
->codec
, type_specific_size
);
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.
296 st
->codec
->codec_id
= CODEC_ID_PROBE
;
297 st
->codec
->codec_tag
= 0;
299 if (st
->codec
->codec_id
== CODEC_ID_AAC
) {
300 st
->need_parsing
= AVSTREAM_PARSE_NONE
;
302 st
->need_parsing
= AVSTREAM_PARSE_FULL
;
304 /* We have to init the frame size at some point .... */
305 pos2
= url_ftell(pb
);
306 if (gsize
>= (pos2
+ 8 - pos1
+ 24)) {
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
);
310 get_le16(pb
); //ds_data_size
311 get_byte(pb
); //ds_silence_data
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
318 || (asf_st
->ds_packet_size
/asf_st
->ds_chunk_size
<= 1)
319 || asf_st
->ds_packet_size
% asf_st
->ds_chunk_size
)
320 asf_st
->ds_span
= 0; // disable descrambling
322 switch (st
->codec
->codec_id
) {
324 st
->codec
->frame_size
= MPA_FRAME_SIZE
;
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
:
334 st
->codec
->frame_size
= 1;
337 /* This is probably wrong, but it prevents a crash later */
338 st
->codec
->frame_size
= 1;
341 } else if (type
== CODEC_TYPE_VIDEO
) {
345 size
= get_le16(pb
); /* size */
346 sizeX
= get_le32(pb
); /* size */
347 st
->codec
->width
= get_le32(pb
);
348 st
->codec
->height
= get_le32(pb
);
349 /* not available for asf */
350 get_le16(pb
); /* panes */
351 st
->codec
->bits_per_coded_sample
= get_le16(pb
); /* depth */
354 // av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
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
);
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
));
367 #ifdef WORDS_BIGENDIAN
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
]);
371 memcpy(st
->codec
->palctrl
->palette
, st
->codec
->extradata
,
372 FFMIN(st
->codec
->extradata_size
, AVPALETTE_SIZE
));
374 st
->codec
->palctrl
->palette_changed
= 1;
377 st
->codec
->codec_tag
= tag1
;
378 st
->codec
->codec_id
= ff_codec_get_id(ff_codec_bmp_tags
, tag1
);
379 if(tag1
== MKTAG('D', 'V', 'R', ' '))
380 st
->need_parsing
= AVSTREAM_PARSE_FULL
;
382 pos2
= url_ftell(pb
);
383 url_fskip(pb
, gsize
- (pos2
- pos1
+ 24));
384 } else if (!guidcmp(&g
, &ff_asf_comment_header
)) {
385 int len1
, len2
, len3
, len4
, len5
;
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
);
397 } else if (!guidcmp(&g
, &stream_bitrate_guid
)) {
398 int stream_count
= get_le16(pb
);
401 // av_log(s, AV_LOG_ERROR, "stream bitrate properties\n");
402 // av_log(s, AV_LOG_ERROR, "streams %d\n", streams);
403 for(j
= 0; j
< stream_count
; j
++) {
404 int flags
, bitrate
, stream_id
;
407 bitrate
= get_le32(pb
);
408 stream_id
= (flags
& 0x7f);
409 // av_log(s, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate);
410 asf
->stream_bitrates
[stream_id
]= bitrate
;
412 } else if (!guidcmp(&g
, &ff_asf_language_guid
)) {
414 int stream_count
= get_le16(pb
);
415 for(j
= 0; j
< stream_count
; j
++) {
417 unsigned int lang_len
= get_byte(pb
);
418 get_str16_nolen(pb
, lang_len
, lang
, sizeof(lang
));
420 av_strlcpy(asf
->stream_languages
[j
], lang
, sizeof(*asf
->stream_languages
));
422 } else if (!guidcmp(&g
, &ff_asf_extended_content_header
)) {
425 desc_count
= get_le16(pb
);
426 for(i
=0;i
<desc_count
;i
++) {
427 int name_len
,value_type
,value_len
;
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
);
436 } else if (!guidcmp(&g
, &ff_asf_metadata_header
)) {
437 int n
, stream_num
, name_len
, value_len
, value_type
, value_num
;
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
);
449 get_str16_nolen(pb
, name_len
, name
, sizeof(name
));
450 //av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
451 value_num
= get_le16(pb
);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere
452 url_fskip(pb
, value_len
- 2);
455 if (!strcmp(name
, "AspectRatioX")) dar
[stream_num
].num
= value_num
;
456 else if(!strcmp(name
, "AspectRatioY")) dar
[stream_num
].den
= value_num
;
459 } else if (!guidcmp(&g
, &ff_asf_ext_stream_header
)) {
460 int ext_len
, payload_ext_ct
, stream_ct
;
461 uint32_t ext_d
, leak_rate
, stream_num
;
462 unsigned int stream_languageid_index
;
464 get_le64(pb
); // starttime
465 get_le64(pb
); // endtime
466 leak_rate
= get_le32(pb
); // leak-datarate
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)
474 stream_num
= get_le16(pb
); // stream-num
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
;
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
484 if (stream_num
< 128)
485 bitrate
[stream_num
] = leak_rate
;
487 for (i
=0; i
<stream_ct
; i
++){
489 ext_len
= get_le16(pb
);
490 url_fseek(pb
, ext_len
, SEEK_CUR
);
493 for (i
=0; i
<payload_ext_ct
; i
++){
496 ext_len
=get_le32(pb
);
497 url_fseek(pb
, ext_len
, SEEK_CUR
);
500 // there could be a optional stream properties object to follow
501 // if so the next iteration will pick it up
502 } else if (!guidcmp(&g
, &ff_asf_head1_guid
)) {
508 } else if (!guidcmp(&g
, &ff_asf_codec_comment_header
)) {
518 num
= get_le16(pb
); /* stream number */
519 get_str16(pb
, str
, sizeof(str
));
520 get_str16(pb
, str
, sizeof(str
));
525 if ((q
- tag
) < sizeof(tag
) - 1)
532 } else if (url_feof(pb
)) {
535 url_fseek(pb
, gsize
- 24, SEEK_CUR
);
544 asf
->data_offset
= url_ftell(pb
);
545 asf
->packet_size_left
= 0;
548 for(i
=0; i
<128; i
++){
549 int stream_num
= asf
->asfid2avid
[i
];
551 AVStream
*st
= s
->streams
[stream_num
];
552 if (!st
->codec
->bit_rate
)
553 st
->codec
->bit_rate
= bitrate
[i
];
554 if (dar
[i
].num
> 0 && dar
[i
].den
> 0)
555 av_reduce(&st
->sample_aspect_ratio
.num
,
556 &st
->sample_aspect_ratio
.den
,
557 dar
[i
].num
, dar
[i
].den
, INT_MAX
);
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);
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
);
567 av_metadata_set(&st
->metadata
, "language", iso6392
);
576 #define DO_2BITS(bits, var, defval) \
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; \
586 * Load a single ASF packet into the demuxer.
587 * @param s demux context
588 * @param pb context to read data from
589 * @returns 0 on success, <0 on error
591 static int ff_asf_get_packet(AVFormatContext
*s
, ByteIOContext
*pb
)
593 ASFContext
*asf
= s
->priv_data
;
594 uint32_t packet_length
, padsize
;
598 off
= (url_ftell(pb
) - s
->data_offset
) % s
->packet_size
+ 3;
604 if(c
== 0x82 && !d
&& !e
)
610 av_log(s
, AV_LOG_ERROR
, "ff asf bad header %x at:%"PRId64
"\n", c
, url_ftell(pb
));
612 if ((c
& 0x8f) == 0x82) {
615 av_log(s
, AV_LOG_ERROR
, "ff asf bad non zero\n");
622 url_fseek(pb
, -1, SEEK_CUR
); //FIXME
625 asf
->packet_flags
= c
;
626 asf
->packet_property
= d
;
628 DO_2BITS(asf
->packet_flags
>> 5, packet_length
, s
->packet_size
);
629 DO_2BITS(asf
->packet_flags
>> 1, padsize
, 0); // sequence ignored
630 DO_2BITS(asf
->packet_flags
>> 3, padsize
, 0); // padding length
632 //the following checks prevent overflows and infinite loops
633 if(packet_length
>= (1U<<29)){
634 av_log(s
, AV_LOG_ERROR
, "invalid packet_length %d at:%"PRId64
"\n", packet_length
, url_ftell(pb
));
637 if(padsize
>= packet_length
){
638 av_log(s
, AV_LOG_ERROR
, "invalid padsize %d at:%"PRId64
"\n", padsize
, url_ftell(pb
));
642 asf
->packet_timestamp
= get_le32(pb
);
643 get_le16(pb
); /* duration */
644 // rsize has at least 11 bytes which have to be present
646 if (asf
->packet_flags
& 0x01) {
647 asf
->packet_segsizetype
= get_byte(pb
); rsize
++;
648 asf
->packet_segments
= asf
->packet_segsizetype
& 0x3f;
650 asf
->packet_segments
= 1;
651 asf
->packet_segsizetype
= 0x80;
653 asf
->packet_size_left
= packet_length
- padsize
- rsize
;
654 if (packet_length
< asf
->hdr
.min_pktsize
)
655 padsize
+= asf
->hdr
.min_pktsize
- packet_length
;
656 asf
->packet_padsize
= padsize
;
657 dprintf(s
, "packet: size=%d padsize=%d left=%d\n", s
->packet_size
, asf
->packet_padsize
, asf
->packet_size_left
);
663 * @return <0 if error
665 static int asf_read_frame_header(AVFormatContext
*s
, ByteIOContext
*pb
){
666 ASFContext
*asf
= s
->priv_data
;
668 int num
= get_byte(pb
);
671 asf
->packet_segments
--;
672 asf
->packet_key_frame
= num
>> 7;
673 asf
->stream_index
= asf
->asfid2avid
[num
& 0x7f];
674 // sequence should be ignored!
675 DO_2BITS(asf
->packet_property
>> 4, asf
->packet_seq
, 0);
676 DO_2BITS(asf
->packet_property
>> 2, asf
->packet_frag_offset
, 0);
677 DO_2BITS(asf
->packet_property
, asf
->packet_replic_size
, 0);
678 //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);
679 if (asf
->packet_replic_size
>= 8) {
680 asf
->packet_obj_size
= get_le32(pb
);
681 if(asf
->packet_obj_size
>= (1<<24) || asf
->packet_obj_size
<= 0){
682 av_log(s
, AV_LOG_ERROR
, "packet_obj_size invalid\n");
685 asf
->packet_frag_timestamp
= get_le32(pb
); // timestamp
686 if(asf
->packet_replic_size
>= 8+38+4){
687 // for(i=0; i<asf->packet_replic_size-8; i++)
688 // av_log(s, AV_LOG_DEBUG, "%02X ",get_byte(pb));
689 // av_log(s, AV_LOG_DEBUG, "\n");
695 url_fskip(pb
, asf
->packet_replic_size
- 8 - 38 - 4);
696 if(ts0
!= -1) asf
->packet_frag_timestamp
= ts0
/10000;
697 else asf
->packet_frag_timestamp
= AV_NOPTS_VALUE
;
699 url_fskip(pb
, asf
->packet_replic_size
- 8);
700 rsize
+= asf
->packet_replic_size
; // FIXME - check validity
701 } else if (asf
->packet_replic_size
==1){
702 // multipacket - frag_offset is beginning timestamp
703 asf
->packet_time_start
= asf
->packet_frag_offset
;
704 asf
->packet_frag_offset
= 0;
705 asf
->packet_frag_timestamp
= asf
->packet_timestamp
;
707 asf
->packet_time_delta
= get_byte(pb
);
709 }else if(asf
->packet_replic_size
!=0){
710 av_log(s
, AV_LOG_ERROR
, "unexpected packet_replic_size of %d\n", asf
->packet_replic_size
);
713 if (asf
->packet_flags
& 0x01) {
714 DO_2BITS(asf
->packet_segsizetype
>> 6, asf
->packet_frag_size
, 0); // 0 is illegal
715 if(asf
->packet_frag_size
> asf
->packet_size_left
- rsize
){
716 av_log(s
, AV_LOG_ERROR
, "packet_frag_size is invalid\n");
719 //printf("Fragsize %d\n", asf->packet_frag_size);
721 asf
->packet_frag_size
= asf
->packet_size_left
- rsize
;
722 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
724 if (asf
->packet_replic_size
== 1) {
725 asf
->packet_multi_size
= asf
->packet_frag_size
;
726 if (asf
->packet_multi_size
> asf
->packet_size_left
)
729 asf
->packet_size_left
-= rsize
;
730 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
736 * Parse data from individual ASF packets (which were previously loaded
737 * with asf_get_packet()).
738 * @param s demux context
739 * @param pb context to read data from
740 * @param pkt pointer to store packet data into
741 * @returns 0 if data was stored in pkt, <0 on error or 1 if more ASF
742 * packets need to be loaded (through asf_get_packet())
744 static int ff_asf_parse_packet(AVFormatContext
*s
, ByteIOContext
*pb
, AVPacket
*pkt
)
746 ASFContext
*asf
= s
->priv_data
;
747 ASFStream
*asf_st
= 0;
751 if (asf
->packet_size_left
< FRAME_HEADER_SIZE
752 || asf
->packet_segments
< 1) {
753 //asf->packet_size_left <= asf->packet_padsize) {
754 int ret
= asf
->packet_size_left
+ asf
->packet_padsize
;
755 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
760 asf
->packet_pos
= url_ftell(pb
);
761 if (asf
->data_object_size
!= (uint64_t)-1 &&
762 (asf
->packet_pos
- asf
->data_object_offset
>= asf
->data_object_size
))
763 return AVERROR_EOF
; /* Do not exceed the size of the data object */
766 if (asf
->packet_time_start
== 0) {
767 if(asf_read_frame_header(s
, pb
) < 0){
768 asf
->packet_segments
= 0;
771 if (asf
->stream_index
< 0
772 || s
->streams
[asf
->stream_index
]->discard
>= AVDISCARD_ALL
773 || (!asf
->packet_key_frame
&& s
->streams
[asf
->stream_index
]->discard
>= AVDISCARD_NONKEY
)
775 asf
->packet_time_start
= 0;
776 /* unhandled packet (should not happen) */
777 url_fskip(pb
, asf
->packet_frag_size
);
778 asf
->packet_size_left
-= asf
->packet_frag_size
;
779 if(asf
->stream_index
< 0)
780 av_log(s
, AV_LOG_ERROR
, "ff asf skip %d (unknown stream)\n", asf
->packet_frag_size
);
783 asf
->asf_st
= s
->streams
[asf
->stream_index
]->priv_data
;
785 asf_st
= asf
->asf_st
;
787 if (asf
->packet_replic_size
== 1) {
788 // frag_offset is here used as the beginning timestamp
789 asf
->packet_frag_timestamp
= asf
->packet_time_start
;
790 asf
->packet_time_start
+= asf
->packet_time_delta
;
791 asf
->packet_obj_size
= asf
->packet_frag_size
= get_byte(pb
);
792 asf
->packet_size_left
--;
793 asf
->packet_multi_size
--;
794 if (asf
->packet_multi_size
< asf
->packet_obj_size
)
796 asf
->packet_time_start
= 0;
797 url_fskip(pb
, asf
->packet_multi_size
);
798 asf
->packet_size_left
-= asf
->packet_multi_size
;
801 asf
->packet_multi_size
-= asf
->packet_obj_size
;
802 //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);
804 if( /*asf->packet_frag_size == asf->packet_obj_size*/
805 asf_st
->frag_offset
+ asf
->packet_frag_size
<= asf_st
->pkt
.size
806 && asf_st
->frag_offset
+ asf
->packet_frag_size
> asf
->packet_obj_size
){
807 av_log(s
, AV_LOG_INFO
, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
808 asf_st
->frag_offset
, asf
->packet_frag_size
,
809 asf
->packet_obj_size
, asf_st
->pkt
.size
);
810 asf
->packet_obj_size
= asf_st
->pkt
.size
;
813 if ( asf_st
->pkt
.size
!= asf
->packet_obj_size
814 || asf_st
->frag_offset
+ asf
->packet_frag_size
> asf_st
->pkt
.size
) { //FIXME is this condition sufficient?
815 if(asf_st
->pkt
.data
){
816 av_log(s
, AV_LOG_INFO
, "freeing incomplete packet size %d, new %d\n", asf_st
->pkt
.size
, asf
->packet_obj_size
);
817 asf_st
->frag_offset
= 0;
818 av_free_packet(&asf_st
->pkt
);
821 av_new_packet(&asf_st
->pkt
, asf
->packet_obj_size
);
822 asf_st
->seq
= asf
->packet_seq
;
823 asf_st
->pkt
.dts
= asf
->packet_frag_timestamp
;
824 asf_st
->pkt
.stream_index
= asf
->stream_index
;
826 asf_st
->packet_pos
= asf
->packet_pos
;
827 //printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
828 //asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY,
829 //s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size);
830 if (s
->streams
[asf
->stream_index
]->codec
->codec_type
== CODEC_TYPE_AUDIO
)
831 asf
->packet_key_frame
= 1;
832 if (asf
->packet_key_frame
)
833 asf_st
->pkt
.flags
|= PKT_FLAG_KEY
;
837 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
838 // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
839 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
840 asf
->packet_size_left
-= asf
->packet_frag_size
;
841 if (asf
->packet_size_left
< 0)
844 if( asf
->packet_frag_offset
>= asf_st
->pkt
.size
845 || asf
->packet_frag_size
> asf_st
->pkt
.size
- asf
->packet_frag_offset
){
846 av_log(s
, AV_LOG_ERROR
, "packet fragment position invalid %u,%u not in %u\n",
847 asf
->packet_frag_offset
, asf
->packet_frag_size
, asf_st
->pkt
.size
);
851 get_buffer(pb
, asf_st
->pkt
.data
+ asf
->packet_frag_offset
,
852 asf
->packet_frag_size
);
853 if (s
->key
&& s
->keylen
== 20)
854 ff_asfcrypt_dec(s
->key
, asf_st
->pkt
.data
+ asf
->packet_frag_offset
,
855 asf
->packet_frag_size
);
856 asf_st
->frag_offset
+= asf
->packet_frag_size
;
857 /* test if whole packet is read */
858 if (asf_st
->frag_offset
== asf_st
->pkt
.size
) {
859 //workaround for macroshit radio DVR-MS files
860 if( s
->streams
[asf
->stream_index
]->codec
->codec_id
== CODEC_ID_MPEG2VIDEO
861 && asf_st
->pkt
.size
> 100){
863 for(i
=0; i
<asf_st
->pkt
.size
&& !asf_st
->pkt
.data
[i
]; i
++);
864 if(i
== asf_st
->pkt
.size
){
865 av_log(s
, AV_LOG_DEBUG
, "discarding ms fart\n");
866 asf_st
->frag_offset
= 0;
867 av_free_packet(&asf_st
->pkt
);
873 if (asf_st
->ds_span
> 1) {
874 if(asf_st
->pkt
.size
!= asf_st
->ds_packet_size
* asf_st
->ds_span
){
875 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
);
877 /* packet descrambling */
878 uint8_t *newdata
= av_malloc(asf_st
->pkt
.size
);
881 while (offset
< asf_st
->pkt
.size
) {
882 int off
= offset
/ asf_st
->ds_chunk_size
;
883 int row
= off
/ asf_st
->ds_span
;
884 int col
= off
% asf_st
->ds_span
;
885 int idx
= row
+ col
* asf_st
->ds_packet_size
/ asf_st
->ds_chunk_size
;
886 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
888 assert(offset
+ asf_st
->ds_chunk_size
<= asf_st
->pkt
.size
);
889 assert(idx
+1 <= asf_st
->pkt
.size
/ asf_st
->ds_chunk_size
);
890 memcpy(newdata
+ offset
,
891 asf_st
->pkt
.data
+ idx
* asf_st
->ds_chunk_size
,
892 asf_st
->ds_chunk_size
);
893 offset
+= asf_st
->ds_chunk_size
;
895 av_free(asf_st
->pkt
.data
);
896 asf_st
->pkt
.data
= newdata
;
900 asf_st
->frag_offset
= 0;
902 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
903 asf_st
->pkt
.size
= 0;
904 asf_st
->pkt
.data
= 0;
905 break; // packet completed
911 static int asf_read_packet(AVFormatContext
*s
, AVPacket
*pkt
)
913 ASFContext
*asf
= s
->priv_data
;
918 /* parse cached packets, if any */
919 if ((ret
= ff_asf_parse_packet(s
, s
->pb
, pkt
)) <= 0)
921 if ((ret
= ff_asf_get_packet(s
, s
->pb
)) < 0)
922 assert(asf
->packet_size_left
< FRAME_HEADER_SIZE
|| asf
->packet_segments
< 1);
923 asf
->packet_time_start
= 0;
929 // Added to support seeking after packets have been read
930 // If information is not reset, read_packet fails due to
931 // leftover information from previous reads
932 static void asf_reset_header(AVFormatContext
*s
)
934 ASFContext
*asf
= s
->priv_data
;
938 asf
->packet_nb_frames
= 0;
939 asf
->packet_size_left
= 0;
940 asf
->packet_segments
= 0;
941 asf
->packet_flags
= 0;
942 asf
->packet_property
= 0;
943 asf
->packet_timestamp
= 0;
944 asf
->packet_segsizetype
= 0;
945 asf
->packet_segments
= 0;
947 asf
->packet_replic_size
= 0;
948 asf
->packet_key_frame
= 0;
949 asf
->packet_padsize
= 0;
950 asf
->packet_frag_offset
= 0;
951 asf
->packet_frag_size
= 0;
952 asf
->packet_frag_timestamp
= 0;
953 asf
->packet_multi_size
= 0;
954 asf
->packet_obj_size
= 0;
955 asf
->packet_time_delta
= 0;
956 asf
->packet_time_start
= 0;
958 for(i
=0; i
<s
->nb_streams
; i
++){
959 asf_st
= s
->streams
[i
]->priv_data
;
960 av_free_packet(&asf_st
->pkt
);
961 asf_st
->frag_offset
=0;
967 static int asf_read_close(AVFormatContext
*s
)
972 for(i
=0;i
<s
->nb_streams
;i
++) {
973 AVStream
*st
= s
->streams
[i
];
974 av_free(st
->codec
->palctrl
);
979 static int64_t asf_read_pts(AVFormatContext
*s
, int stream_index
, int64_t *ppos
, int64_t pos_limit
)
981 AVPacket pkt1
, *pkt
= &pkt1
;
986 int64_t start_pos
[s
->nb_streams
];
988 for(i
=0; i
<s
->nb_streams
; i
++){
992 pos
= (pos
+s
->packet_size
-1-s
->data_offset
)/s
->packet_size
*s
->packet_size
+ s
->data_offset
;
994 url_fseek(s
->pb
, pos
, SEEK_SET
);
996 //printf("asf_read_pts\n");
999 if (av_read_frame(s
, pkt
) < 0){
1000 av_log(s
, AV_LOG_INFO
, "asf_read_pts failed\n");
1001 return AV_NOPTS_VALUE
;
1006 av_free_packet(pkt
);
1007 if(pkt
->flags
&PKT_FLAG_KEY
){
1008 i
= pkt
->stream_index
;
1010 asf_st
= s
->streams
[i
]->priv_data
;
1012 // assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
1013 pos
= asf_st
->packet_pos
;
1015 av_add_index_entry(s
->streams
[i
], pos
, pts
, pkt
->size
, pos
- start_pos
[i
] + 1, AVINDEX_KEYFRAME
);
1016 start_pos
[i
]= asf_st
->packet_pos
+ 1;
1018 if(pkt
->stream_index
== stream_index
)
1024 //printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
1029 static void asf_build_simple_index(AVFormatContext
*s
, int stream_index
)
1032 ASFContext
*asf
= s
->priv_data
;
1033 int64_t current_pos
= url_ftell(s
->pb
);
1036 url_fseek(s
->pb
, asf
->data_object_offset
+ asf
->data_object_size
, SEEK_SET
);
1037 get_guid(s
->pb
, &g
);
1038 if (!guidcmp(&g
, &index_guid
)) {
1041 int64_t av_unused gsize
= get_le64(s
->pb
);
1042 get_guid(s
->pb
, &g
);
1043 itime
=get_le64(s
->pb
);
1044 pct
=get_le32(s
->pb
);
1045 ict
=get_le32(s
->pb
);
1046 av_log(s
, AV_LOG_DEBUG
, "itime:0x%"PRIx64
", pct:%d, ict:%d\n",itime
,pct
,ict
);
1048 for (i
=0;i
<ict
;i
++){
1049 int pktnum
=get_le32(s
->pb
);
1050 int pktct
=get_le16(s
->pb
);
1051 int64_t pos
= s
->data_offset
+ s
->packet_size
*(int64_t)pktnum
;
1052 int64_t index_pts
= av_rescale(itime
, i
, 10000);
1054 av_log(s
, AV_LOG_DEBUG
, "pktnum:%d, pktct:%d\n", pktnum
, pktct
);
1055 av_add_index_entry(s
->streams
[stream_index
], pos
, index_pts
, s
->packet_size
, 0, AVINDEX_KEYFRAME
);
1059 url_fseek(s
->pb
, current_pos
, SEEK_SET
);
1062 static int asf_read_seek(AVFormatContext
*s
, int stream_index
, int64_t pts
, int flags
)
1064 ASFContext
*asf
= s
->priv_data
;
1065 AVStream
*st
= s
->streams
[stream_index
];
1069 if (s
->packet_size
<= 0)
1072 /* Try using the protocol's read_seek if available */
1074 int ret
= av_url_read_fseek(s
->pb
, stream_index
, pts
, flags
);
1076 asf_reset_header(s
);
1077 if (ret
!= AVERROR(ENOSYS
))
1081 if (!asf
->index_read
)
1082 asf_build_simple_index(s
, stream_index
);
1084 if(!(asf
->index_read
&& st
->index_entries
)){
1085 if(av_seek_frame_binary(s
, stream_index
, pts
, flags
)<0)
1088 index
= av_index_search_timestamp(st
, pts
, flags
);
1092 /* find the position */
1093 pos
= st
->index_entries
[index
].pos
;
1095 // various attempts to find key frame have failed so far
1096 // asf_reset_header(s);
1097 // url_fseek(s->pb, pos, SEEK_SET);
1099 // for(i=0;i<16;i++){
1100 // pos = url_ftell(s->pb);
1101 // if (av_read_frame(s, &pkt) < 0){
1102 // av_log(s, AV_LOG_INFO, "seek failed\n");
1105 // asf_st = s->streams[stream_index]->priv_data;
1106 // pos += st->parser->frame_offset;
1108 // if (pkt.size > b) {
1113 // av_free_packet(&pkt);
1117 av_log(s
, AV_LOG_DEBUG
, "SEEKTO: %"PRId64
"\n", pos
);
1118 url_fseek(s
->pb
, pos
, SEEK_SET
);
1120 asf_reset_header(s
);
1124 AVInputFormat asf_demuxer
= {
1126 NULL_IF_CONFIG_SMALL("ASF format"),
1134 .metadata_conv
= ff_asf_metadata_conv
,