Libav
Data Structures | Macros | Functions | Variables
asfdec.c File Reference
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/bswap.h"
#include "libavutil/common.h"
#include "libavutil/dict.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "avformat.h"
#include "avio_internal.h"
#include "avlanguage.h"
#include "id3v2.h"
#include "internal.h"
#include "riff.h"
#include "asf.h"
#include "asfcrypt.h"
#include <assert.h>

Go to the source code of this file.

Data Structures

struct  ASFContext
 

Macros

#define ASF_MAX_STREAMS   127
 
#define FRAME_HEADER_SIZE   17
 
#define print_guid(g)
 
#define DO_2BITS(bits, var, defval)
 

Functions

static int asf_probe (AVProbeData *pd)
 
static int get_value (AVIOContext *pb, int type, int type2_size)
 
static int asf_read_picture (AVFormatContext *s, int len)
 
static void get_id3_tag (AVFormatContext *s, int len)
 
static void get_tag (AVFormatContext *s, const char *key, int type, int len, int type2_size)
 
static int asf_read_file_properties (AVFormatContext *s, int64_t size)
 
static int asf_read_stream_properties (AVFormatContext *s, int64_t size)
 
static int asf_read_ext_stream_properties (AVFormatContext *s, int64_t size)
 
static int asf_read_content_desc (AVFormatContext *s, int64_t size)
 
static int asf_read_ext_content_desc (AVFormatContext *s, int64_t size)
 
static int asf_read_language_list (AVFormatContext *s, int64_t size)
 
static int asf_read_metadata (AVFormatContext *s, int64_t size)
 
static int asf_read_marker (AVFormatContext *s, int64_t size)
 
static int asf_read_header (AVFormatContext *s)
 
static int asf_get_packet (AVFormatContext *s, AVIOContext *pb)
 Load a single ASF packet into the demuxer. More...
 
static int asf_read_frame_header (AVFormatContext *s, AVIOContext *pb)
 
static int asf_parse_packet (AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
 Parse data from individual ASF packets (which were previously loaded with asf_get_packet()). More...
 
static int asf_read_packet (AVFormatContext *s, AVPacket *pkt)
 
static void asf_reset_header (AVFormatContext *s)
 
static int asf_read_close (AVFormatContext *s)
 
static int64_t asf_read_pts (AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
 
static int asf_build_simple_index (AVFormatContext *s, int stream_index)
 
static int asf_read_seek (AVFormatContext *s, int stream_index, int64_t pts, int flags)
 

Variables

static const AVOption options []
 
static const AVClass asf_class
 
static const ff_asf_guid index_guid
 
AVInputFormat ff_asf_demuxer
 

Macro Definition Documentation

#define ASF_MAX_STREAMS   127

Definition at line 98 of file asfdec.c.

Referenced by asf_read_pts(), and asf_read_stream_properties().

#define FRAME_HEADER_SIZE   17

Definition at line 99 of file asfdec.c.

Referenced by asf_parse_packet(), asf_read_packet(), ffm_read_packet(), and ffm_write_packet().

#define print_guid (   g)

Definition at line 151 of file asfdec.c.

Referenced by asf_read_header().

#define DO_2BITS (   bits,
  var,
  defval 
)
Value:
switch (bits & 3) { \
case 3: \
var = avio_rl32(pb); \
rsize += 4; \
break; \
case 2: \
var = avio_rl16(pb); \
rsize += 2; \
break; \
case 1: \
var = avio_r8(pb); \
rsize++; \
break; \
default: \
var = defval; \
break; \
}
uint8_t bits
Definition: crc.c:216
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:558
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:437
unsigned int avio_rl16(AVIOContext *s)
Definition: aviobuf.c:542

Definition at line 842 of file asfdec.c.

Referenced by asf_get_packet(), and asf_read_frame_header().

Function Documentation

static int asf_probe ( AVProbeData pd)
static

Definition at line 154 of file asfdec.c.

static int get_value ( AVIOContext pb,
int  type,
int  type2_size 
)
static

Definition at line 165 of file asfdec.c.

Referenced by asf_read_ext_content_desc(), asf_read_metadata(), and get_tag().

static int asf_read_picture ( AVFormatContext s,
int  len 
)
static

Definition at line 183 of file asfdec.c.

Referenced by get_tag().

static void get_id3_tag ( AVFormatContext s,
int  len 
)
static

Definition at line 270 of file asfdec.c.

Referenced by get_tag().

static void get_tag ( AVFormatContext s,
const char *  key,
int  type,
int  len,
int  type2_size 
)
static

Definition at line 280 of file asfdec.c.

Referenced by asf_read_content_desc(), asf_read_ext_content_desc(), and asf_read_metadata().

static int asf_read_file_properties ( AVFormatContext s,
int64_t  size 
)
static

Definition at line 322 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_stream_properties ( AVFormatContext s,
int64_t  size 
)
static

Definition at line 346 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_ext_stream_properties ( AVFormatContext s,
int64_t  size 
)
static

Definition at line 512 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_content_desc ( AVFormatContext s,
int64_t  size 
)
static

Definition at line 560 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_ext_content_desc ( AVFormatContext s,
int64_t  size 
)
static

Definition at line 579 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_language_list ( AVFormatContext s,
int64_t  size 
)
static

Definition at line 613 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_metadata ( AVFormatContext s,
int64_t  size 
)
static

Definition at line 633 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_marker ( AVFormatContext s,
int64_t  size 
)
static

Definition at line 672 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_header ( AVFormatContext s)
static

Definition at line 708 of file asfdec.c.

static int asf_get_packet ( AVFormatContext s,
AVIOContext pb 
)
static

Load a single ASF packet into the demuxer.

Parameters
sdemux context
pbcontext to read data from
Returns
0 on success, <0 on error

Definition at line 867 of file asfdec.c.

Referenced by asf_read_packet().

static int asf_read_frame_header ( AVFormatContext s,
AVIOContext pb 
)
static
Returns
<0 if error

Definition at line 966 of file asfdec.c.

Referenced by asf_parse_packet().

static int asf_parse_packet ( AVFormatContext s,
AVIOContext pb,
AVPacket pkt 
)
static

Parse data from individual ASF packets (which were previously loaded with asf_get_packet()).

Parameters
sdemux context
pbcontext to read data from
pktpointer to store packet data into
Returns
0 if data was stored in pkt, <0 on error or 1 if more ASF packets need to be loaded (through asf_get_packet())

Definition at line 1059 of file asfdec.c.

Referenced by asf_read_packet().

static int asf_read_packet ( AVFormatContext s,
AVPacket pkt 
)
static

Definition at line 1285 of file asfdec.c.

Referenced by asf_read_pts().

static void asf_reset_header ( AVFormatContext s)
static

Definition at line 1305 of file asfdec.c.

Referenced by asf_read_close(), asf_read_pts(), and asf_read_seek().

static int asf_read_close ( AVFormatContext s)
static

Definition at line 1341 of file asfdec.c.

static int64_t asf_read_pts ( AVFormatContext s,
int  stream_index,
int64_t *  ppos,
int64_t  pos_limit 
)
static

Definition at line 1348 of file asfdec.c.

static int asf_build_simple_index ( AVFormatContext s,
int  stream_index 
)
static

Definition at line 1400 of file asfdec.c.

Referenced by asf_read_seek().

static int asf_read_seek ( AVFormatContext s,
int  stream_index,
int64_t  pts,
int  flags 
)
static

Definition at line 1458 of file asfdec.c.

Variable Documentation

const AVOption options[]
static
Initial value:
= {
{ "no_resync_search", "Don't try to resynchronize by looking for a certain optional start code", 0x42, AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
{ NULL },
}
NULL
Definition: eval.c:55
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
Definition: opt.h:264

Definition at line 83 of file asfdec.c.

const AVClass asf_class
static
Initial value:
= {
.class_name = "asf demuxer",
.item_name = av_default_item_name,
.option = options,
}
static const AVOption options[]
Definition: asfdec.c:83
LIBAVUTIL_VERSION_INT
Definition: eval.c:55
av_default_item_name
Definition: dnxhdenc.c:45

Definition at line 88 of file asfdec.c.

const ff_asf_guid index_guid
static
Initial value:
= {
0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
}

Definition at line 102 of file asfdec.c.

Referenced by asf_build_simple_index().

AVInputFormat ff_asf_demuxer
Initial value:
= {
.name = "asf",
.long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
.priv_data_size = sizeof(ASFContext),
.read_timestamp = asf_read_pts,
.priv_class = &asf_class,
}
#define AVFMT_NOBINSEARCH
Format does not allow to fall back on binary search via read_timestamp.
Definition: avformat.h:413
static const AVClass asf_class
Definition: asfdec.c:88
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
static int flags
Definition: log.c:44
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:142
static int asf_read_header(AVFormatContext *s)
Definition: asfdec.c:708
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
static int asf_probe(AVProbeData *pd)
Definition: asfdec.c:154
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:536
static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
Definition: asfdec.c:1348
static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
Definition: asfdec.c:1458
#define AVFMT_NOGENSEARCH
Format does not allow to fall back on generic search.
Definition: avformat.h:414
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
Definition: libcdio.c:114
static int asf_read_close(AVFormatContext *s)
Definition: asfdec.c:1341
static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: asfdec.c:1285

Definition at line 1508 of file asfdec.c.

Referenced by ff_wms_parse_sdp_a_line().