huffyuvenc.c File Reference

huffyuv encoder More...

#include "avcodec.h"
#include "huffyuv.h"
#include "huffman.h"
#include "internal.h"
#include "put_bits.h"

Go to the source code of this file.

Macros
#define	LOAD4
#define	LOAD2
#define	STAT2
#define	WRITE2
#define	LOAD_GBRA
#define	STAT_BGRA
#define	WRITE_GBRA

Functions
static int	sub_left_prediction (HYuvContext *s, uint8_t *dst, const uint8_t *src, int w, int left)
static void	sub_left_prediction_bgr32 (HYuvContext *s, uint8_t *dst, const uint8_t *src, int w, int *red, int *green, int *blue, int *alpha)
static void	sub_left_prediction_rgb24 (HYuvContext *s, uint8_t *dst, uint8_t *src, int w, int *red, int *green, int *blue)
static int	store_table (HYuvContext *s, const uint8_t *len, uint8_t *buf)
static av_cold int	encode_init (AVCodecContext *avctx)
static int	encode_422_bitstream (HYuvContext *s, int offset, int count)
static int	encode_gray_bitstream (HYuvContext *s, int count)
static int	encode_bgra_bitstream (HYuvContext *s, int count, int planes)
static int	encode_frame (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
static av_cold int	encode_end (AVCodecContext *avctx)

Detailed Description

huffyuv encoder

Definition in file huffyuvenc.c.

Macro Definition Documentation

#define LOAD4

Value:

int y0 = y[2 * i];\
            int y1 = y[2 * i + 1];\
            int u0 = u[i];\
            int v0 = v[i];

Referenced by encode_422_bitstream().

#define LOAD2

Value:

int y0 = s->temp[0][2 * i];\
            int y1 = s->temp[0][2 * i + 1];

Referenced by encode_gray_bitstream().

#define STAT2

Value:

s->stats[0][y0]++;\
            s->stats[0][y1]++;

Referenced by encode_gray_bitstream().

#define WRITE2

Value:

put_bits(&s->pb, s->len[0][y0], s->bits[0][y0]);\
            put_bits(&s->pb, s->len[0][y1], s->bits[0][y1]);

Referenced by encode_gray_bitstream().

#define LOAD_GBRA

Value:

int g = s->temp[0][planes == 3 ? 3 * i + 1 : 4 * i + G];            \
    int b =(s->temp[0][planes == 3 ? 3 * i + 2 : 4 * i + B] - g) & 0xFF;\
    int r =(s->temp[0][planes == 3 ? 3 * i + 0 : 4 * i + R] - g) & 0xFF;\
    int a = s->temp[0][planes * i + A];

Referenced by encode_bgra_bitstream().

#define STAT_BGRA

Value:

s->stats[0][b]++;                                                   \
    s->stats[1][g]++;                                                   \
    s->stats[2][r]++;                                                   \
    if (planes == 4)                                                    \
        s->stats[2][a]++;

Referenced by encode_bgra_bitstream().

#define WRITE_GBRA

Value:

put_bits(&s->pb, s->len[1][g], s->bits[1][g]);                      \
    put_bits(&s->pb, s->len[0][b], s->bits[0][b]);                      \
    put_bits(&s->pb, s->len[2][r], s->bits[2][r]);                      \
    if (planes == 4)                                                    \
        put_bits(&s->pb, s->len[2][a], s->bits[2][a]);

Referenced by encode_bgra_bitstream().

Function Documentation

static int sub_left_prediction ( HYuvContext *  s, uint8_t *  dst, const uint8_t *  src, int  w, int  left  )

inlinestatic

Definition at line 35 of file huffyuvenc.c.

Referenced by encode_frame().

static void sub_left_prediction_bgr32 ( HYuvContext *  s, uint8_t *  dst, const uint8_t *  src, int  w, int *  red, int *  green, int *  blue, int *  alpha  )

inlinestatic

Definition at line 57 of file huffyuvenc.c.

Referenced by encode_frame().

static void sub_left_prediction_rgb24 ( HYuvContext *  s, uint8_t *  dst, uint8_t *  src, int  w, int *  red, int *  green, int *  blue  )

inlinestatic

Definition at line 92 of file huffyuvenc.c.

Referenced by encode_frame().

static int store_table ( HYuvContext *  s, const uint8_t *  len, uint8_t *  buf  )

static

Definition at line 120 of file huffyuvenc.c.

Referenced by encode_frame(), and encode_init().

static av_cold int encode_init ( AVCodecContext *  avctx )

static

Definition at line 144 of file huffyuvenc.c.

static int encode_422_bitstream ( HYuvContext *  s, int  offset, int  count  )

static

Definition at line 293 of file huffyuvenc.c.

Referenced by encode_frame().

static int encode_gray_bitstream ( HYuvContext *  s, int  count  )

static

Definition at line 348 of file huffyuvenc.c.

Referenced by encode_frame().

static int encode_bgra_bitstream ( HYuvContext *  s, int  count, int  planes  )

inlinestatic

Definition at line 393 of file huffyuvenc.c.

Referenced by encode_frame().

static int encode_frame ( AVCodecContext *  avctx, AVPacket *  pkt, const AVFrame *  pict, int *  got_packet  )

static

Definition at line 444 of file huffyuvenc.c.

static av_cold int encode_end ( AVCodecContext *  avctx )

static

Definition at line 676 of file huffyuvenc.c.