escape124.c File Reference

#include "avcodec.h"
#include "codec_internal.h"
#include "decode.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

Functions
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, ptrdiff_t dest_stride, uint16_t *src, ptrdiff_t src_stride)
static int	escape124_decode_frame (AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *avpkt)

Variables
static const uint16_t	mask_matrix []
const FFCodec	ff_escape124_decoder

Macro Definition Documentation

BITSTREAM_READER_LE

#define BITSTREAM_READER_LE

Definition at line 22 of file escape124.c.

Function Documentation

escape124_decode_init()

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 57 of file escape124.c.

escape124_decode_close()

static av_cold int escape124_decode_close ( AVCodecContext *  avctx )

static

Definition at line 73 of file escape124.c.

unpack_codebook()

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

static

Definition at line 86 of file escape124.c.

Referenced by escape124_decode_frame().

decode_skip_count()

static unsigned decode_skip_count ( GetBitContext *  gb )

static

Definition at line 110 of file escape124.c.

Referenced by escape124_decode_frame().

decode_macroblock()

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

static

Definition at line 132 of file escape124.c.

Referenced by escape124_decode_frame().

insert_mb_into_sb()

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

static

Definition at line 164 of file escape124.c.

Referenced by escape124_decode_frame().

copy_superblock()

static void copy_superblock ( uint16_t *  dest, ptrdiff_t  dest_stride, uint16_t *  src, ptrdiff_t  src_stride  )

static

Definition at line 173 of file escape124.c.

Referenced by escape124_decode_frame().

escape124_decode_frame()

static int escape124_decode_frame ( AVCodecContext *  avctx, AVFrame *  frame, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 191 of file escape124.c.

Variable Documentation

mask_matrix

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 186 of file escape124.c.

Referenced by escape124_decode_frame().

ff_escape124_decoder

const FFCodec ff_escape124_decoder

Initial value:

= {
    .p.name         = "escape124",
    CODEC_LONG_NAME("Escape 124"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_ESCAPE124,
    .priv_data_size = sizeof(Escape124Context),
    .init           = escape124_decode_init,
    .close          = escape124_decode_close,
    FF_CODEC_DECODE_CB(escape124_decode_frame),
    .p.capabilities = AV_CODEC_CAP_DR1,
}

Definition at line 374 of file escape124.c.