libavcodec/escape124.c File Reference

#include "avcodec.h"
#include "get_bits.h"

Go to the source code of this file.

Data Structures
union	MacroBlock
union	SuperBlock
struct	CodeBook
struct	Escape124Context
Defines
#define	ALT_BITSTREAM_READER_LE
Functions
static int	can_safely_read (GetBitContext *gb, int bits)
static av_cold int	escape124_decode_init (AVCodecContext *avctx)
	Initialize the decoder.
static av_cold int	escape124_decode_close (AVCodecContext *avctx)
static CodeBook	unpack_codebook (GetBitContext *gb, unsigned depth, unsigned size)
static unsigned	decode_skip_count (GetBitContext *gb)
static MacroBlock	decode_macroblock (Escape124Context *s, GetBitContext *gb, int *codebook_index, int superblock_index)
static void	insert_mb_into_sb (SuperBlock *sb, MacroBlock mb, unsigned index)
static void	copy_superblock (uint16_t *dest, unsigned dest_stride, uint16_t *src, unsigned src_stride)
static int	escape124_decode_frame (AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
	Decode a single frame.
Variables
static const uint16_t	mask_matrix []
AVCodec	escape124_decoder

---

Define Documentation

#define ALT_BITSTREAM_READER_LE

Definition at line 24 of file escape124.c.

---

Function Documentation

static int can_safely_read	(	GetBitContext *	gb,
		int	bits
	)			[static]

Definition at line 51 of file escape124.c.

Referenced by decode_skip_count(), escape124_decode_frame(), and unpack_codebook().

static void copy_superblock	(	uint16_t *	dest,
		unsigned	dest_stride,
		uint16_t *	src,
		unsigned	src_stride
	)			[static]

Definition at line 180 of file escape124.c.

Referenced by escape124_decode_frame().

static MacroBlock decode_macroblock	(	Escape124Context *	s,
		GetBitContext *	gb,
		int *	codebook_index,
		int	superblock_index
	)			[static]

Definition at line 140 of file escape124.c.

Referenced by escape124_decode_frame().

static unsigned decode_skip_count

(

GetBitContext *

gb

)

[static]

Definition at line 118 of file escape124.c.

Referenced by escape124_decode_frame().

static av_cold int escape124_decode_close

(

AVCodecContext *

avctx

)

[static]

Definition at line 72 of file escape124.c.

static int escape124_decode_frame	(	AVCodecContext *	avctx,
		void *	data,
		int *	data_size,
		AVPacket *	avpkt
	)			[static]

Decode a single frame.

Parameters:

	avctx	decoder context
	data	decoded frame
	data_size	size of the decoded frame
	buf	input buffer
	buf_size	input buffer size

Returns:

0 success, -1 on error

Definition at line 207 of file escape124.c.

static av_cold int escape124_decode_init

(

AVCodecContext *

avctx

)

[static]

Initialize the decoder.

Parameters:

avctx

decoder context

Returns:

0 success, negative on error

Definition at line 60 of file escape124.c.

static void insert_mb_into_sb	(	SuperBlock *	sb,
		MacroBlock	mb,
		unsigned	index
	)			[static]

Definition at line 171 of file escape124.c.

Referenced by escape124_decode_frame().

static CodeBook unpack_codebook	(	GetBitContext *	gb,
		unsigned	depth,
		unsigned	size
	)			[static]

Definition at line 86 of file escape124.c.

Referenced by escape124_decode_frame().

---

Variable Documentation

AVCodec escape124_decoder

Initial value:

 {
    "escape124",
    AVMEDIA_TYPE_VIDEO,
    CODEC_ID_ESCAPE124,
    sizeof(Escape124Context),
    escape124_decode_init,
    NULL,
    escape124_decode_close,
    escape124_decode_frame,
    CODEC_CAP_DR1,
    .long_name = NULL_IF_CONFIG_SMALL("Escape 124"),
}

Definition at line 375 of file escape124.c.

const uint16_t mask_matrix[] [static]

Initial value:

 {0x1,   0x2,   0x10,   0x20,
                                       0x4,   0x8,   0x40,   0x80,
                                       0x100, 0x200, 0x1000, 0x2000,
                                       0x400, 0x800, 0x4000, 0x8000}

Definition at line 193 of file escape124.c.

Referenced by escape124_decode_frame().