asfdec.c File Reference

#include "libavutil/attributes.h"
#include "libavutil/bswap.h"
#include "libavutil/common.h"
#include "libavutil/avstring.h"
#include "libavutil/dict.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "avformat.h"
#include "internal.h"
#include "avio_internal.h"
#include "id3v2.h"
#include "riff.h"
#include "asf.h"
#include "asfcrypt.h"
#include "avlanguage.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   16
#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)
static int	asf_read_picture (AVFormatContext *s, int len)
static void	get_tag (AVFormatContext *s, const char *key, int type, int len)
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	ff_asf_get_packet (AVFormatContext *s, AVIOContext *pb)
	Load a single ASF packet into the demuxer.
static int	asf_read_frame_header (AVFormatContext *s, AVIOContext *pb)
static int	ff_asf_parse_packet (AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
	Parse data from individual ASF packets (which were previously loaded with asf_get_packet()).
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 void	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
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   16

Definition at line 99 of file asfdec.c.

Referenced by asf_read_packet(), and ff_asf_parse_packet().

#define print_guid

(

g

)

Definition at line 146 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; \
    }

Definition at line 818 of file asfdec.c.

Referenced by asf_read_frame_header(), and ff_asf_get_packet().

Function Documentation

static int asf_probe ( AVProbeData *  pd )

static

Definition at line 149 of file asfdec.c.

static int get_value ( AVIOContext *  pb, int  type  )

static

Definition at line 158 of file asfdec.c.

Referenced by asf_read_ext_content_desc(), and get_tag().

static int asf_read_picture ( AVFormatContext *  s, int  len  )

static

Definition at line 170 of file asfdec.c.

Referenced by get_tag().

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

static

Definition at line 263 of file asfdec.c.

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

static int asf_read_file_properties ( AVFormatContext *  s, int64_t  size  )

static

Definition at line 297 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_stream_properties ( AVFormatContext *  s, int64_t  size  )

static

Definition at line 321 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 486 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_content_desc ( AVFormatContext *  s, int64_t  size  )

static

Definition at line 544 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_ext_content_desc ( AVFormatContext *  s, int64_t  size  )

static

My sample has that stream set to 0 maybe that mean the container. Asf stream count start at 1. I am using 0 to the container value since it's unused

Definition at line 563 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_language_list ( AVFormatContext *  s, int64_t  size  )

static

Definition at line 598 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_metadata ( AVFormatContext *  s, int64_t  size  )

static

Definition at line 616 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_marker ( AVFormatContext *  s, int64_t  size  )

static

Definition at line 650 of file asfdec.c.

Referenced by asf_read_header().

static int asf_read_header ( AVFormatContext *  s )

static

Definition at line 683 of file asfdec.c.

static int ff_asf_get_packet ( AVFormatContext *  s, AVIOContext *  pb  )

static

Load a single ASF packet into the demuxer.

Parameters

s	demux context
pb	context to read data from

Returns

0 on success, <0 on error

This code allows handling of -EAGAIN at packet boundaries (i.e. if the packet sync code above triggers -EAGAIN). This does not imply complete -EAGAIN handling support at random positions in the stream.

Definition at line 833 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 927 of file asfdec.c.

Referenced by ff_asf_parse_packet().

static int ff_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

s	demux context
pb	context to read data from
pkt	pointer 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 1051 of file asfdec.c.

Referenced by asf_read_packet().

static int asf_read_packet ( AVFormatContext *  s, AVPacket *  pkt  )

static

Definition at line 1249 of file asfdec.c.

static void asf_reset_header ( AVFormatContext *  s )

static

Definition at line 1268 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 1302 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 1309 of file asfdec.c.

static void asf_build_simple_index ( AVFormatContext *  s, int  stream_index  )

static

Definition at line 1358 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 1412 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 },
}

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,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 88 of file asfdec.c.

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_probe     = asf_probe,
    .read_header    = asf_read_header,
    .read_packet    = asf_read_packet,
    .read_close     = asf_read_close,
    .read_seek      = asf_read_seek,
    .read_timestamp = asf_read_pts,
    .flags          = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH,
    .priv_class     = &asf_class,
}

Definition at line 1453 of file asfdec.c.

Referenced by ff_wms_parse_sdp_a_line().