huffyuvenc.c File Reference

huffyuv encoder More...

#include "avcodec.h"
#include "huffyuv.h"
#include "huffman.h"
#include "huffyuvencdsp.h"
#include "internal.h"
#include "lossless_videoencdsp.h"
#include "put_bits.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"

Go to the source code of this file.

Macros
#define	STATS_OUT_SIZE   21*MAX_N*3 + 4
#define	LOAD4
#define	LOADEND   int y0 = s->temp[0][width-1];
#define	LOADEND_14   int y0 = s->temp16[0][width-1] & mask;
#define	LOADEND_16   int y0 = s->temp16[0][width-1];
#define	STATEND   s->stats[plane][y0]++;
#define	STATEND_16   s->stats[plane][y0>>2]++;
#define	WRITEEND   put_bits(&s->pb, s->len[plane][y0], s->bits[plane][y0]);
#define	WRITEEND_16
#define	LOAD2
#define	LOAD2_14
#define	LOAD2_16
#define	STAT2
#define	STAT2_16
#define	WRITE2
#define	WRITE2_16
#define	LOAD2
#define	STAT2
#define	WRITE2
#define	LOAD_GBRA
#define	STAT_BGRA
#define	WRITE_GBRA
#define	OFFSET(x)   offsetof(HYuvContext, x)
#define	VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
#define	COMMON_OPTIONS

Functions
static void	diff_bytes (HYuvContext *s, uint8_t *dst, const uint8_t *src0, const uint8_t *src1, int w)
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 void	sub_median_prediction (HYuvContext *s, uint8_t *dst, const uint8_t *src1, const uint8_t *src2, int w, int *left, int *left_top)
static int	store_table (HYuvContext *s, const uint8_t *len, uint8_t *buf)
static int	store_huffman_tables (HYuvContext *s, 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_plane_bitstream (HYuvContext *s, int width, int plane)
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)

Variables
static const AVOption	normal_options []
static const AVOption	ff_options []
static const AVClass	normal_class
static const AVClass	ff_class
AVCodec	ff_huffyuv_encoder

Detailed Description

huffyuv encoder

Definition in file huffyuvenc.c.

Macro Definition Documentation

STATS_OUT_SIZE

#define STATS_OUT_SIZE   21*MAX_N*3 + 4

Referenced by encode_frame(), and encode_init().

LOAD4

#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().

LOADEND

#define LOADEND   int y0 = s->temp[0][width-1];

Referenced by encode_plane_bitstream().

LOADEND_14

#define LOADEND_14   int y0 = s->temp16[0][width-1] & mask;

Referenced by encode_plane_bitstream().

LOADEND_16

#define LOADEND_16   int y0 = s->temp16[0][width-1];

Referenced by encode_plane_bitstream().

STATEND

#define STATEND   s->stats[plane][y0]++;

Referenced by encode_plane_bitstream().

STATEND_16

#define STATEND_16   s->stats[plane][y0>>2]++;

Referenced by encode_plane_bitstream().

WRITEEND

#define WRITEEND   put_bits(&s->pb, s->len[plane][y0], s->bits[plane][y0]);

Referenced by encode_plane_bitstream().

WRITEEND_16

#define WRITEEND_16

Value:

put_bits(&s->pb, s->len[plane][y0>>2], s->bits[plane][y0>>2]);\
            put_bits(&s->pb, 2, y0&3);

Referenced by encode_plane_bitstream().

LOAD2 [1/2]

#define LOAD2

Value:

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

Referenced by encode_gray_bitstream(), and encode_plane_bitstream().

LOAD2_14

#define LOAD2_14

Value:

int y0 = s->temp16[0][2 * i] & mask;\
            int y1 = s->temp16[0][2 * i + 1] & mask;

Referenced by encode_plane_bitstream().

LOAD2_16

#define LOAD2_16

Value:

int y0 = s->temp16[0][2 * i];\
            int y1 = s->temp16[0][2 * i + 1];

Referenced by encode_plane_bitstream().

STAT2 [1/2]

#define STAT2

Value:

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

Referenced by encode_gray_bitstream(), and encode_plane_bitstream().

STAT2_16

#define STAT2_16

Value:

s->stats[plane][y0>>2]++;\
            s->stats[plane][y1>>2]++;

Referenced by encode_plane_bitstream().

WRITE2 [1/2]

#define WRITE2

Value:

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

Referenced by encode_gray_bitstream(), and encode_plane_bitstream().

WRITE2_16

#define WRITE2_16

Value:

put_bits(&s->pb, s->len[plane][y0>>2], s->bits[plane][y0>>2]);\
            put_bits(&s->pb, 2, y0&3);\
            put_bits(&s->pb, s->len[plane][y1>>2], s->bits[plane][y1>>2]);\
            put_bits(&s->pb, 2, y1&3);

Referenced by encode_plane_bitstream().

LOAD2 [2/2]

#define LOAD2

Value:

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

STAT2 [2/2]

#define STAT2

Value:

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

WRITE2 [2/2]

#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]);

LOAD_GBRA

#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().

STAT_BGRA

#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().

WRITE_GBRA

#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().

OFFSET

#define OFFSET

(

x

)

offsetof(HYuvContext, x)

Definition at line 1049 of file huffyuvenc.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 1050 of file huffyuvenc.c.

COMMON_OPTIONS

#define COMMON_OPTIONS

Value:

{ "non_deterministic", "Allow multithreading for e.g. context=1 at the expense of determinism", \
      OFFSET(non_determ), AV_OPT_TYPE_BOOL, { .i64 = 1 }, \
      0, 1, VE }, \
    { "pred", "Prediction method", OFFSET(predictor), AV_OPT_TYPE_INT, { .i64 = LEFT }, LEFT, MEDIAN, VE, "pred" }, \
        { "left",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LEFT },   INT_MIN, INT_MAX, VE, "pred" }, \
        { "plane",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PLANE },  INT_MIN, INT_MAX, VE, "pred" }, \
        { "median", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MEDIAN }, INT_MIN, INT_MAX, VE, "pred" }, \

Definition at line 1052 of file huffyuvenc.c.

Function Documentation

diff_bytes()

static void diff_bytes ( HYuvContext *  s, uint8_t *  dst, const uint8_t *  src0, const uint8_t *  src1, int  w  )

inlinestatic

Definition at line 41 of file huffyuvenc.c.

Referenced by encode_frame().

sub_left_prediction()

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

inlinestatic

Definition at line 51 of file huffyuvenc.c.

Referenced by encode_frame().

sub_left_prediction_bgr32()

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 82 of file huffyuvenc.c.

Referenced by encode_frame().

sub_left_prediction_rgb24()

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 118 of file huffyuvenc.c.

Referenced by encode_frame().

sub_median_prediction()

static void sub_median_prediction ( HYuvContext *  s, uint8_t *  dst, const uint8_t *  src1, const uint8_t *  src2, int  w, int *  left, int *  left_top  )

static

Definition at line 146 of file huffyuvenc.c.

Referenced by encode_frame().

store_table()

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

static

Definition at line 155 of file huffyuvenc.c.

Referenced by store_huffman_tables().

store_huffman_tables()

static int store_huffman_tables ( HYuvContext *  s, uint8_t *  buf  )

static

Definition at line 180 of file huffyuvenc.c.

Referenced by encode_frame(), and encode_init().

encode_init()

static av_cold int encode_init ( AVCodecContext *  avctx )

static

Definition at line 202 of file huffyuvenc.c.

encode_422_bitstream()

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

static

Definition at line 440 of file huffyuvenc.c.

Referenced by encode_frame().

encode_plane_bitstream()

static int encode_plane_bitstream ( HYuvContext *  s, int  width, int  plane  )

static

Definition at line 495 of file huffyuvenc.c.

Referenced by encode_frame().

encode_gray_bitstream()

static int encode_gray_bitstream ( HYuvContext *  s, int  count  )

static

Definition at line 657 of file huffyuvenc.c.

Referenced by encode_frame().

encode_bgra_bitstream()

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

inlinestatic

Definition at line 702 of file huffyuvenc.c.

Referenced by encode_frame().

encode_frame()

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

static

Definition at line 753 of file huffyuvenc.c.

encode_end()

static av_cold int encode_end ( AVCodecContext *  avctx )

static

Definition at line 1037 of file huffyuvenc.c.

Variable Documentation

normal_options

const AVOption normal_options[]

static

Initial value:

= {
    COMMON_OPTIONS
    { NULL },
}

Definition at line 1061 of file huffyuvenc.c.

ff_options

const AVOption ff_options[]

static

Initial value:

= {
    COMMON_OPTIONS
    { "context", "Set per-frame huffman tables", OFFSET(context), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
    { NULL },
}

Definition at line 1066 of file huffyuvenc.c.

normal_class

const AVClass normal_class

static

Initial value:

= {
    .class_name = "huffyuv",
    .item_name  = av_default_item_name,
    .option     = normal_options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 1072 of file huffyuvenc.c.

ff_class

const AVClass ff_class

static

Initial value:

= {
    .class_name = "ffvhuff",
    .item_name  = av_default_item_name,
    .option     = ff_options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 1079 of file huffyuvenc.c.

ff_huffyuv_encoder

AVCodec ff_huffyuv_encoder

Initial value:

= {
    .name           = "huffyuv",
    .long_name      = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_HUFFYUV,
    .priv_data_size = sizeof(HYuvContext),
    .init           = encode_init,
    .encode2        = encode_frame,
    .close          = encode_end,
    .capabilities   = AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_INTRA_ONLY,
    .priv_class     = &normal_class,
    .pix_fmts       = (const enum AVPixelFormat[]){
        AV_PIX_FMT_YUV422P, AV_PIX_FMT_RGB24,
        AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE
    },
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE |
                      FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 1086 of file huffyuvenc.c.