libavformat/asfdec.c File Reference

#include "libavutil/common.h"
#include "libavcodec/mpegaudio.h"
#include "avformat.h"
#include "riff.h"
#include "asf.h"
#include "asfcrypt.h"
#include <assert.h>

Go to the source code of this file.

Defines
#define	FRAME_HEADER_SIZE   17
#define	print_guid(g)
#define	DO_2BITS(bits, var, defval)
Functions
void	ff_mms_set_stream_selection (URLContext *h, AVFormatContext *format)
static void	get_guid (ByteIOContext *s, GUID *g)
static void	get_str16_nolen (ByteIOContext *pb, int len, char *buf, int buf_size)
static int	asf_probe (AVProbeData *pd)
static int	get_value (ByteIOContext *pb, int type)
static void	get_tag (AVFormatContext *s, const char *key, int type, int len)
static int	asf_read_header (AVFormatContext *s, AVFormatParameters *ap)
int	ff_asf_get_packet (AVFormatContext *s, ByteIOContext *pb)
	Load a single ASF packet into the demuxer.
static int	asf_read_frame_header (AVFormatContext *s, ByteIOContext *pb)
int	ff_asf_parse_packet (AVFormatContext *s, ByteIOContext *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 GUID	index_guid
static const GUID	stream_bitrate_guid
AVInputFormat	asf_demuxer

---

Define Documentation

#define DO_2BITS	(	bits,
		var,
		defval		)

Value:

switch (bits & 3) \
    { \
    case 3: var = get_le32(pb); rsize += 4; break; \
    case 2: var = get_le16(pb); rsize += 2; break; \
    case 1: var = get_byte(pb); rsize++; break; \
    default: var = defval; break; \
    }

Definition at line 542 of file asfdec.c.

Referenced by asf_read_frame_header(), and ff_asf_get_packet().

#define FRAME_HEADER_SIZE   17

Definition at line 34 of file asfdec.c.

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

#define print_guid

(

g

)

Definition at line 87 of file asfdec.c.

Referenced by asf_read_header().

---

Function Documentation

static void asf_build_simple_index	(	AVFormatContext *	s,
		int	stream_index
	)			[static]

Definition at line 983 of file asfdec.c.

Referenced by asf_read_seek().

static int asf_probe

(

AVProbeData *

pd

)

[static]

Definition at line 125 of file asfdec.c.

static int asf_read_close

(

AVFormatContext *

s

)

[static]

Definition at line 920 of file asfdec.c.

static int asf_read_frame_header	(	AVFormatContext *	s,
		ByteIOContext *	pb
	)			[static]

Returns:

<0 if error

Definition at line 627 of file asfdec.c.

Referenced by ff_asf_parse_packet().

static int asf_read_header	(	AVFormatContext *	s,
		AVFormatParameters *	ap
	)			[static]

Definition at line 161 of file asfdec.c.

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

Definition at line 864 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 932 of file asfdec.c.

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

Definition at line 1019 of file asfdec.c.

static void asf_reset_header

(

AVFormatContext *

s

)

[static]

Definition at line 885 of file asfdec.c.

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

int ff_asf_get_packet	(	AVFormatContext *	s,
		ByteIOContext *	pb
	)

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

Definition at line 551 of file asfdec.c.

Referenced by asf_read_packet().

int ff_asf_parse_packet	(	AVFormatContext *	s,
		ByteIOContext *	pb,
		AVPacket *	pkt
	)

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 697 of file asfdec.c.

Referenced by asf_read_packet().

void ff_mms_set_stream_selection	(	URLContext *	h,
		AVFormatContext *	format
	)

static void get_guid	(	ByteIOContext *	s,
		GUID *	g
	)			[static]

Definition at line 90 of file asfdec.c.

Referenced by asf_build_simple_index(), and asf_read_header().

static void get_str16_nolen	(	ByteIOContext *	pb,
		int	len,
		char *	buf,
		int	buf_size
	)			[static]

Definition at line 114 of file asfdec.c.

Referenced by asf_read_header(), and get_tag().

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

Definition at line 144 of file asfdec.c.

static int get_value	(	ByteIOContext *	pb,
		int	type
	)			[static]

Definition at line 134 of file asfdec.c.

Referenced by get_tag().

---

Variable Documentation

AVInputFormat asf_demuxer

Initial value:

 {
    "asf",
    NULL_IF_CONFIG_SMALL("ASF format"),
    sizeof(ASFContext),
    asf_probe,
    asf_read_header,
    asf_read_packet,
    asf_read_close,
    asf_read_seek,
    asf_read_pts,
    .metadata_conv = ff_asf_metadata_conv,
}

Definition at line 1082 of file asfdec.c.

const 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 37 of file asfdec.c.

Referenced by asf_build_simple_index().

const GUID stream_bitrate_guid [static]

Initial value:

 { 
    0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
}

Definition at line 41 of file asfdec.c.

Referenced by asf_read_header().