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

Initial value:

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().


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