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 int	magy_huff_cmp_len (const void *a, const void *b)
static int	huff_cmp_sym (const void *a, const void *b)
static void	calculate_codes (HuffEntry *he)
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, 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 525 of file magicyuvenc.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 526 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 75 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 99 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 127 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 148 of file magicyuvenc.c.

magy_huff_cmp_len()

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

static

Definition at line 220 of file magicyuvenc.c.

Referenced by calculate_codes().

huff_cmp_sym()

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

static

Definition at line 226 of file magicyuvenc.c.

Referenced by calculate_codes().

calculate_codes()

static void calculate_codes ( HuffEntry *  he )

static

Definition at line 232 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 248 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 268 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, int  size, int  max_length  )

static

Definition at line 275 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 336 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 362 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 395 of file magicyuvenc.c.

magy_encode_close()

static av_cold int magy_encode_close ( AVCodecContext *  avctx )

static

Definition at line 514 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 527 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 535 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 | AV_CODEC_CAP_INTRA_ONLY | AV_CODEC_CAP_EXPERIMENTAL,
    .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
                      },
}

Definition at line 542 of file magicyuvenc.c.