escape124.c File Reference

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

Include dependency graph for escape124.c:

Go to the source code of this file.

Data Structures
union	MacroBlock
union	SuperBlock
struct	CodeBook
struct	Escape124Context

Macros
#define	BITSTREAM_READER_LE

Typedefs
typedef union MacroBlock	MacroBlock
typedef union SuperBlock	SuperBlock
typedef struct CodeBook	CodeBook
typedef struct Escape124Context	Escape124Context

Functions
static int	can_safely_read (GetBitContext *gb, uint64_t bits)
static av_cold int	escape124_decode_init (AVCodecContext *avctx)
	Initialize the decoder. More...
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 *got_frame, AVPacket *avpkt)

Variables
static const uint16_t	mask_matrix []
AVCodec	ff_escape124_decoder

Macro Definition Documentation

#define BITSTREAM_READER_LE

Definition at line 25 of file escape124.c.

Typedef Documentation

typedef struct CodeBook CodeBook

typedef struct Escape124Context Escape124Context

typedef union MacroBlock MacroBlock

typedef union SuperBlock SuperBlock

Function Documentation

static int can_safely_read ( GetBitContext *  gb, uint64_t  bits  )

static

Definition at line 52 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().

static av_cold int escape124_decode_close ( AVCodecContext *  avctx )

static

Definition at line 74 of file escape124.c.

static int escape124_decode_frame ( AVCodecContext *  avctx, void *  data, int *  got_frame, 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 61 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             = AV_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 369 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().