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sgirledec.c File Reference

Silicon Graphics RLE 8-bit video decoder. More...

#include "libavutil/common.h"
#include "avcodec.h"
#include "internal.h"

Go to the source code of this file.

Data Structures

struct  SGIRLEContext
 

Macros

#define RBG323_TO_BGR8(x)
 Convert SGI RBG323 pixel into AV_PIX_FMT_BGR8 SGI RGB data is packed as 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 rbg323_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, ptrdiff_t 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

Silicon Graphics RLE 8-bit video decoder.

Note
Data is packed in rbg323 with rle, contained in mv or mov. The algorithm and pixfmt are subtly different from SGI images.

Definition in file sgirledec.c.

Macro Definition Documentation

#define RBG323_TO_BGR8 (   x)
Value:
((((x) << 3) & 0xC0) | \
(((x) << 3) & 0x38) | \
(((x) >> 5) & 7))

Convert SGI RBG323 pixel into AV_PIX_FMT_BGR8 SGI RGB data is packed as 8bpp, (msb)3R 2B 3G(lsb)

Definition at line 52 of file sgirledec.c.

Referenced by decode_sgirle8(), and rbg323_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 38 of file sgirledec.c.

static av_always_inline void rbg323_to_bgr8 ( uint8_t dst,
const uint8_t src,
int  size 
)
static

Definition at line 56 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,
ptrdiff_t  linesize 
)
static
Parameters
[out]dstDestination buffer
[in]srcSource buffer
src_sizeSource buffer size (bytes)
widthWidth of destination buffer (pixels)
heightHeight of destination buffer (pixels)
linesizeLine size of destination buffer (bytes)
Returns
<0 on error

Definition at line 73 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 120 of file sgirledec.c.

static av_cold int sgirle_decode_end ( AVCodecContext avctx)
static

Definition at line 141 of file sgirledec.c.

Variable Documentation

AVCodec ff_sgirle_decoder
Initial value:
= {
.name = "sgirle",
.long_name = NULL_IF_CONFIG_SMALL("Silicon Graphics RLE 8-bit video"),
.priv_data_size = sizeof(SGIRLEContext),
.capabilities = CODEC_CAP_DR1,
}

Definition at line 150 of file sgirledec.c.