escape124.c File Reference

#include "avcodec.h"
#include "internal.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 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 *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.

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 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 av_cold int escape124_decode_close ( AVCodecContext *  avctx )

static

Definition at line 74 of file escape124.c.

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

static

Definition at line 88 of file escape124.c.

Referenced by escape124_decode_frame().

static unsigned decode_skip_count ( GetBitContext *  gb )

static

Definition at line 120 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 142 of file escape124.c.

Referenced by escape124_decode_frame().

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

static

Definition at line 173 of file escape124.c.

Referenced by escape124_decode_frame().

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

static

Definition at line 182 of file escape124.c.

Referenced by escape124_decode_frame().

static int escape124_decode_frame ( AVCodecContext *  avctx, void *  data, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 200 of file escape124.c.

Variable Documentation

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 195 of file escape124.c.

Referenced by escape124_decode_frame().

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.