magicyuv.c File Reference

#include <stdlib.h>
#include <string.h>
#include "libavutil/mem.h"
#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"
#include "get_bits.h"
#include "lossless_videodsp.h"
#include "thread.h"

Go to the source code of this file.

Data Structures
struct	Slice
struct	HuffEntry
struct	MagicYUVContext

Macros
#define	CACHED_BITSTREAM_READER   !ARCH_X86_32
#define	VLC_BITS   12
#define	READ_PLANE(dst, plane, b, c)

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

Functions
static int	huff_build (AVCodecContext *avctx, const uint8_t len[], uint16_t codes_pos[33], VLC *vlc, VLC_MULTI *multi, int nb_elems, void *logctx)
static void	magicyuv_median_pred16 (uint16_t *dst, const uint16_t *src1, const uint16_t *diff, intptr_t w, int *left, int *left_top, int max)
static int	magy_decode_slice10 (AVCodecContext *avctx, void *tdata, int j, int threadnr)
static int	magy_decode_slice (AVCodecContext *avctx, void *tdata, int j, int threadnr)
static int	build_huffman (AVCodecContext *avctx, const uint8_t *table, int table_size, int max)
static int	magy_decode_frame (AVCodecContext *avctx, AVFrame *p, int *got_frame, AVPacket *avpkt)
static av_cold int	magy_decode_init (AVCodecContext *avctx)
static av_cold int	magy_decode_end (AVCodecContext *avctx)

Variables
const FFCodec	ff_magicyuv_decoder

Macro Definition Documentation

CACHED_BITSTREAM_READER

#define CACHED_BITSTREAM_READER   !ARCH_X86_32

Definition at line 25 of file magicyuv.c.

VLC_BITS

#define VLC_BITS   12

Definition at line 38 of file magicyuv.c.

READ_PLANE

#define READ_PLANE	(		dst,
			plane,
			b,
			c )

Value:

{ \
    x = 0; \
    for (; CACHED_BITSTREAM_READER && x < width-c && get_bits_left(&gb) > 0;) {\
        ret = get_vlc_multi(&gb, (uint8_t *)dst + x * b, multi, \
                            vlc, vlc_bits, 3, b); \
        if (ret <= 0) \
            return AVERROR_INVALIDDATA; \
        x += ret; \
    } \
    for (; x < width && get_bits_left(&gb) > 0; x++) \
        dst[x] = get_vlc2(&gb, vlc, vlc_bits, 3); \
    dst += stride; \
}

Definition at line 123 of file magicyuv.c.

Referenced by magy_decode_slice(), and magy_decode_slice10().

Enumeration Type Documentation

Prediction

enum Prediction

Enumerator
LEFT
GRADIENT
MEDIAN

Definition at line 45 of file magicyuv.c.

Function Documentation

huff_build()

static int huff_build ( AVCodecContext * avctx, const uint8_t len[], uint16_t codes_pos[33], VLC * vlc, VLC_MULTI * multi, int nb_elems, void * logctx )

static

Definition at line 81 of file magicyuv.c.

Referenced by build_huffman().

magicyuv_median_pred16()

static void magicyuv_median_pred16 ( uint16_t * dst, const uint16_t * src1, const uint16_t * diff, intptr_t w, int * left, int * left_top, int max )

static

Definition at line 102 of file magicyuv.c.

Referenced by magy_decode_slice10().

magy_decode_slice10()

static int magy_decode_slice10 ( AVCodecContext * avctx, void * tdata, int j, int threadnr )

static

Definition at line 138 of file magicyuv.c.

Referenced by magy_decode_frame().

magy_decode_slice()

static int magy_decode_slice ( AVCodecContext * avctx, void * tdata, int j, int threadnr )

static

Definition at line 262 of file magicyuv.c.

Referenced by magy_decode_frame().

build_huffman()

static int build_huffman ( AVCodecContext * avctx, const uint8_t * table, int table_size, int max )

static

Definition at line 385 of file magicyuv.c.

Referenced by magy_decode_frame().

magy_decode_frame()

static int magy_decode_frame ( AVCodecContext * avctx, AVFrame * p, int * got_frame, AVPacket * avpkt )

static

Definition at line 438 of file magicyuv.c.

magy_decode_init()

static av_cold int magy_decode_init ( AVCodecContext * avctx )

static

Definition at line 660 of file magicyuv.c.

magy_decode_end()

static av_cold int magy_decode_end ( AVCodecContext * avctx )

static

Definition at line 667 of file magicyuv.c.

Variable Documentation

ff_magicyuv_decoder

const FFCodec ff_magicyuv_decoder

Initial value:

= {
    .p.name           = "magicyuv",
    CODEC_LONG_NAME("MagicYUV video"),
    .p.type           = AVMEDIA_TYPE_VIDEO,
    .p.id             = AV_CODEC_ID_MAGICYUV,
    .priv_data_size   = sizeof(MagicYUVContext),
    .init             = magy_decode_init,
    .close            = magy_decode_end,
    FF_CODEC_DECODE_CB(magy_decode_frame),
    .p.capabilities   = AV_CODEC_CAP_DR1 |
                        AV_CODEC_CAP_FRAME_THREADS |
                        AV_CODEC_CAP_SLICE_THREADS,
}

Definition at line 682 of file magicyuv.c.