leaddec.c File Reference

#include "avcodec.h"
#include "blockdsp.h"
#include "codec_internal.h"
#include "copy_block.h"
#include "decode.h"
#include "get_bits.h"
#include "idctdsp.h"
#include "jpegquanttables.h"
#include "jpegtables.h"
#include "leaddata.h"
#include "libavutil/mem_internal.h"
#include "libavutil/thread.h"

Go to the source code of this file.

Data Structures
struct	LeadContext

Macros
#define	LUMA_DC_BITS   9
#define	CHROMA_DC_BITS   11
#define	LUMA_AC_BITS   10
#define	CHROMA_AC_BITS   10

Functions
static av_cold void	lead_init_static_data (void)
static av_cold int	lead_decode_init (AVCodecContext *avctx)
static void	calc_dequant (uint16_t *dequant, const uint8_t *quant_tbl, int q)
static int	decode_block (LeadContext *s, GetBitContext *gb, const VLCElem *dc_table, int dc_bits, const VLCElem *ac_table, int ac_bits, int16_t *dc_pred, const uint16_t *dequant, uint8_t *dst, int stride)
static int	lead_decode_frame (AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *avpkt)
static av_cold int	lead_decode_end (AVCodecContext *avctx)

Variables
static VLCElem	luma_dc_vlc [1<< LUMA_DC_BITS]
static VLCElem	chroma_dc_vlc [1<< CHROMA_DC_BITS]
static VLCElem	luma_ac_vlc [1160]
static VLCElem	chroma_ac_vlc [1160]
const FFCodec	ff_lead_decoder

Macro Definition Documentation

LUMA_DC_BITS

#define LUMA_DC_BITS   9

Definition at line 36 of file leaddec.c.

CHROMA_DC_BITS

#define CHROMA_DC_BITS   11

Definition at line 37 of file leaddec.c.

LUMA_AC_BITS

#define LUMA_AC_BITS   10

Definition at line 38 of file leaddec.c.

CHROMA_AC_BITS

#define CHROMA_AC_BITS   10

Definition at line 39 of file leaddec.c.

Function Documentation

lead_init_static_data()

static av_cold void lead_init_static_data ( void  )

static

Definition at line 46 of file leaddec.c.

Referenced by lead_decode_init().

lead_decode_init()

static av_cold int lead_decode_init ( AVCodecContext *  avctx )

static

Definition at line 74 of file leaddec.c.

calc_dequant()

static void calc_dequant ( uint16_t *  dequant, const uint8_t *  quant_tbl, int  q  )

static

Definition at line 91 of file leaddec.c.

Referenced by lead_decode_frame().

decode_block()

static int decode_block ( LeadContext *  s, GetBitContext *  gb, const VLCElem *  dc_table, int  dc_bits, const VLCElem *  ac_table, int  ac_bits, int16_t *  dc_pred, const uint16_t *  dequant, uint8_t *  dst, int  stride  )

static

Definition at line 97 of file leaddec.c.

Referenced by lead_decode_frame().

lead_decode_frame()

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

static

Definition at line 140 of file leaddec.c.

lead_decode_end()

static av_cold int lead_decode_end ( AVCodecContext *  avctx )

static

Definition at line 296 of file leaddec.c.

Variable Documentation

luma_dc_vlc

VLCElem luma_dc_vlc[1<< LUMA_DC_BITS]

static

Definition at line 41 of file leaddec.c.

Referenced by lead_decode_frame(), and lead_init_static_data().

chroma_dc_vlc

VLCElem chroma_dc_vlc[1<< CHROMA_DC_BITS]

static

Definition at line 42 of file leaddec.c.

Referenced by lead_decode_frame(), and lead_init_static_data().

luma_ac_vlc

VLCElem luma_ac_vlc[1160]

static

Definition at line 43 of file leaddec.c.

Referenced by lead_decode_frame(), and lead_init_static_data().

chroma_ac_vlc

VLCElem chroma_ac_vlc[1160]

static

Definition at line 44 of file leaddec.c.

Referenced by lead_decode_frame(), and lead_init_static_data().

ff_lead_decoder

const FFCodec ff_lead_decoder

Initial value:

= {
    .p.name         = "lead",
    CODEC_LONG_NAME("LEAD MCMP"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_LEAD,
    .priv_data_size = sizeof(LeadContext),
    .init           = lead_decode_init,
    .close          = lead_decode_end,
    FF_CODEC_DECODE_CB(lead_decode_frame),
    .p.capabilities = AV_CODEC_CAP_DR1,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 305 of file leaddec.c.