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

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, 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)

Variables

static const uint16_t mask_matrix []
AVCodec ff_escape124_decoder

Macro Definition Documentation

#define BITSTREAM_READER_LE

Definition at line 24 of file escape124.c.

Typedef Documentation

typedef struct CodeBook CodeBook
typedef union MacroBlock MacroBlock
typedef union SuperBlock SuperBlock

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

Definition at line 198 of file escape124.c.

static av_cold int escape124_decode_init ( AVCodecContext avctx)
static

Initialize the decoder.

Parameters
avctxdecoder 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 ff_escape124_decoder
Initial value:
{
.name = "escape124",
.priv_data_size = sizeof(Escape124Context),
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Escape 124"),
}

Definition at line 366 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().