sgirledec.c File Reference

SGI RLE 8-bit decoder. More...

#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "bytestream.h"

Go to the source code of this file.

Macros
#define	RGB332_TO_BGR8(x)   (((x << 3) & 0xC0) | ((x << 3) & 0x38) | ((x >> 5) & 7))
	Convert SGI RGB332 pixel into PIX_FMT_BGR8 SGI RGB332 is packed RGB 3:3:2, 8bpp, (msb)3R 2B 3G(lsb)
#define	INC_XY(n)

Functions
static av_cold int	sgirle_decode_init (AVCodecContext *avctx)
static av_always_inline void	memcpy_rgb332_to_bgr8 (uint8_t *dst, const uint8_t *src, int size)
static int	decode_sgirle8 (AVCodecContext *avctx, uint8_t *dst, const uint8_t *src, int src_size, int width, int height, int linesize)
static int	sgirle_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static av_cold int	sgirle_decode_end (AVCodecContext *avctx)

Variables
AVCodec	ff_sgirle_decoder

Detailed Description

SGI RLE 8-bit decoder.

Definition in file sgirledec.c.

Macro Definition Documentation

#define RGB332_TO_BGR8

(

x

)

(((x << 3) & 0xC0) | ((x << 3) & 0x38) | ((x >> 5) & 7))

Convert SGI RGB332 pixel into PIX_FMT_BGR8 SGI RGB332 is packed RGB 3:3:2, 8bpp, (msb)3R 2B 3G(lsb)

Definition at line 44 of file sgirledec.c.

Referenced by decode_sgirle8(), and memcpy_rgb332_to_bgr8().

#define INC_XY

(

n

)

Value:

x += n; \
    if (x >= width) { \
        y++; \
        if (y >= height) \
            return 0; \
        x = 0; \
    }

Referenced by decode_sgirle8().

Function Documentation

static av_cold int sgirle_decode_init ( AVCodecContext *  avctx )

static

Definition at line 31 of file sgirledec.c.

static av_always_inline void memcpy_rgb332_to_bgr8 ( uint8_t *  dst, const uint8_t *  src, int  size  )

static

Definition at line 46 of file sgirledec.c.

Referenced by decode_sgirle8().

static int decode_sgirle8 ( AVCodecContext *  avctx, uint8_t *  dst, const uint8_t *  src, int  src_size, int  width, int  height, int  linesize  )

static

Parameters

[out]	dst	Destination buffer
[in]	src	Source buffer
	src_size	Source buffer size (bytes)
	width	Width of destination buffer (pixels)
	height	Height of destination buffer (pixels)
	linesize	Line size of destination buffer (bytes)

Returns

<0 on error

Definition at line 62 of file sgirledec.c.

Referenced by sgirle_decode_frame().

static int sgirle_decode_frame ( AVCodecContext *  avctx, void *  data, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 105 of file sgirledec.c.

static av_cold int sgirle_decode_end ( AVCodecContext *  avctx )

static

Definition at line 131 of file sgirledec.c.

Variable Documentation

AVCodec ff_sgirle_decoder

Initial value:

= {
    .name           = "sgirle",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_SGIRLE,
    .init           = sgirle_decode_init,
    .close          = sgirle_decode_end,
    .decode         = sgirle_decode_frame,
    .capabilities   = CODEC_CAP_DR1,
    .long_name      = NULL_IF_CONFIG_SMALL("SGI RLE 8-bit"),
}

Definition at line 139 of file sgirledec.c.