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	BITSTREAM_READER_LE
Functions
static int	can_safely_read (GetBitContext *gb, uint64_t 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)
Variables
static const uint16_t	mask_matrix []
AVCodec	ff_escape124_decoder

---

Define Documentation

#define BITSTREAM_READER_LE

Definition at line 24 of file escape124.c.

---

Function Documentation

static int can_safely_read	(	GetBitContext *	gb,
		uint64_t	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 181 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 141 of file escape124.c.

Referenced by escape124_decode_frame().

static unsigned decode_skip_count

(

GetBitContext *

gb

)

[static]

Definition at line 119 of file escape124.c.

Referenced by escape124_decode_frame(), and escape130_decode_frame().

static av_cold int escape124_decode_close

(

AVCodecContext *

avctx

)

[static]

Definition at line 73 of file escape124.c.

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

Definition at line 199 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 172 of file escape124.c.

Referenced by escape124_decode_frame().

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

Definition at line 87 of file escape124.c.

Referenced by escape124_decode_frame().

---

Variable Documentation

AVCodec ff_escape124_decoder

Initial value:

 {
    .name           = "escape124",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = CODEC_ID_ESCAPE124,
    .priv_data_size = sizeof(Escape124Context),
    .init           = escape124_decode_init,
    .close          = escape124_decode_close,
    .decode         = escape124_decode_frame,
    .capabilities   = CODEC_CAP_DR1,
    .long_name = NULL_IF_CONFIG_SMALL("Escape 124"),
}

Definition at line 368 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 194 of file escape124.c.

Referenced by escape124_decode_frame().