magicyuvenc.c File Reference

#include <stdlib.h>
#include <string.h>
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/qsort.h"
#include "avcodec.h"
#include "bytestream.h"
#include "put_bits.h"
#include "internal.h"
#include "thread.h"
#include "lossless_videoencdsp.h"

Go to the source code of this file.

Data Structures
struct	HuffEntry
struct	PTable
	Used to assign a occurrence count or "probability" to an input value. More...
struct	MagicYUVContext
struct	PackageMergerList
	Used to store intermediate lists in the package merge algorithm. More...

Macros
#define	OFFSET(x)   offsetof(MagicYUVContext, x)
#define	VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Enumerations
enum	Prediction {   LEFT = 1 , GRADIENT , MEDIAN , LEFT = 1 ,   GRADIENT , MEDIAN }

Functions
static void	left_predict (MagicYUVContext *s, uint8_t *src, uint8_t *dst, ptrdiff_t stride, int width, int height)
static void	gradient_predict (MagicYUVContext *s, uint8_t *src, uint8_t *dst, ptrdiff_t stride, int width, int height)
static void	median_predict (MagicYUVContext *s, uint8_t *src, uint8_t *dst, ptrdiff_t stride, int width, int height)
static av_cold int	magy_encode_init (AVCodecContext *avctx)
static void	calculate_codes (HuffEntry *he, uint16_t codes_count[33])
static void	count_usage (uint8_t *src, int width, int height, PTable *counts)
static int	compare_by_prob (const void *a, const void *b)
static void	magy_huffman_compute_bits (PTable *prob_table, HuffEntry *distincts, uint16_t codes_counts[33], int size, int max_length)
static int	encode_table (AVCodecContext *avctx, uint8_t *dst, int width, int height, PutBitContext *pb, HuffEntry *he)
static int	encode_slice (uint8_t *src, uint8_t *dst, int dst_size, int width, int height, HuffEntry *he, int prediction)
static int	magy_encode_frame (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
static av_cold int	magy_encode_close (AVCodecContext *avctx)

Variables
static const AVOption	options []
static const AVClass	magicyuv_class
AVCodec	ff_magicyuv_encoder

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(MagicYUVContext, x)

Definition at line 544 of file magicyuvenc.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 545 of file magicyuvenc.c.

Enumeration Type Documentation

Prediction

enum Prediction

Enumerator
LEFT
GRADIENT
MEDIAN
LEFT
GRADIENT
MEDIAN

Definition at line 36 of file magicyuvenc.c.

Function Documentation

left_predict()

static void left_predict ( MagicYUVContext *  s, uint8_t *  src, uint8_t *  dst, ptrdiff_t  stride, int  width, int  height  )

static

Definition at line 73 of file magicyuvenc.c.

Referenced by magy_encode_init().

gradient_predict()

static void gradient_predict ( MagicYUVContext *  s, uint8_t *  src, uint8_t *  dst, ptrdiff_t  stride, int  width, int  height  )

static

Definition at line 97 of file magicyuvenc.c.

Referenced by magy_encode_init().

median_predict()

static void median_predict ( MagicYUVContext *  s, uint8_t *  src, uint8_t *  dst, ptrdiff_t  stride, int  width, int  height  )

static

Definition at line 125 of file magicyuvenc.c.

Referenced by magy_encode_init().

magy_encode_init()

static av_cold int magy_encode_init ( AVCodecContext *  avctx )

static

Definition at line 146 of file magicyuvenc.c.

calculate_codes()

static void calculate_codes ( HuffEntry *  he, uint16_t  codes_count[33]  )

static

Definition at line 247 of file magicyuvenc.c.

Referenced by encode_table().

count_usage()

static void count_usage ( uint8_t *  src, int  width, int  height, PTable *  counts  )

static

Definition at line 261 of file magicyuvenc.c.

Referenced by encode_table().

compare_by_prob()

static int compare_by_prob ( const void *  a, const void *  b  )

static

Definition at line 281 of file magicyuvenc.c.

Referenced by magy_huffman_compute_bits().

magy_huffman_compute_bits()

static void magy_huffman_compute_bits ( PTable *  prob_table, HuffEntry *  distincts, uint16_t  codes_counts[33], int  size, int  max_length  )

static

Definition at line 288 of file magicyuvenc.c.

Referenced by encode_table().

encode_table()

static int encode_table ( AVCodecContext *  avctx, uint8_t *  dst, int  width, int  height, PutBitContext *  pb, HuffEntry *  he  )

static

Definition at line 350 of file magicyuvenc.c.

Referenced by magy_encode_frame().

encode_slice()

static int encode_slice ( uint8_t *  src, uint8_t *  dst, int  dst_size, int  width, int  height, HuffEntry *  he, int  prediction  )

static

Definition at line 377 of file magicyuvenc.c.

Referenced by magy_encode_frame().

magy_encode_frame()

static int magy_encode_frame ( AVCodecContext *  avctx, AVPacket *  pkt, const AVFrame *  frame, int *  got_packet  )

static

Definition at line 410 of file magicyuvenc.c.

magy_encode_close()

static av_cold int magy_encode_close ( AVCodecContext *  avctx )

static

Definition at line 533 of file magicyuvenc.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
    { "pred", "Prediction method", OFFSET(frame_pred), AV_OPT_TYPE_INT, {.i64=LEFT}, LEFT, MEDIAN, VE, "pred" },
    { "left",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LEFT },     0, 0, VE, "pred" },
    { "gradient", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = GRADIENT }, 0, 0, VE, "pred" },
    { "median",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MEDIAN },   0, 0, VE, "pred" },
    { NULL},
}

Definition at line 546 of file magicyuvenc.c.

magicyuv_class

const AVClass magicyuv_class

static

Initial value:

= {
    .class_name = "magicyuv",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 554 of file magicyuvenc.c.

ff_magicyuv_encoder

AVCodec ff_magicyuv_encoder

Initial value:

= {
    .name             = "magicyuv",
    .long_name        = NULL_IF_CONFIG_SMALL("MagicYUV video"),
    .type             = AVMEDIA_TYPE_VIDEO,
    .id               = AV_CODEC_ID_MAGICYUV,
    .priv_data_size   = sizeof(MagicYUVContext),
    .priv_class       = &magicyuv_class,
    .init             = magy_encode_init,
    .close            = magy_encode_close,
    .encode2          = magy_encode_frame,
    .capabilities     = AV_CODEC_CAP_FRAME_THREADS,
    .pix_fmts         = (const enum AVPixelFormat[]) {
                          AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_YUV422P,
                          AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, AV_PIX_FMT_GRAY8,
                          AV_PIX_FMT_NONE
                      },
    .caps_internal    = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 561 of file magicyuvenc.c.