sgidec.c File Reference

#include "libavutil/imgutils.h"
#include "libavutil/avassert.h"
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"
#include "sgi.h"

Go to the source code of this file.

Data Structures
struct	SgiState

Functions
static int	expand_rle_row (SgiState *s, uint8_t *out_buf, uint8_t *out_end, int pixelstride)
	Expand an RLE row into a channel.
static int	read_rle_sgi (uint8_t *out_buf, SgiState *s)
	Read a run length encoded SGI image.
static int	read_uncompressed_sgi (unsigned char *out_buf, SgiState *s)
	Read an uncompressed SGI image.
static int	decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)

Variables
AVCodec	ff_sgi_decoder

Function Documentation

static int expand_rle_row ( SgiState *  s, uint8_t *  out_buf, uint8_t *  out_end, int  pixelstride  )

static

Expand an RLE row into a channel.

Parameters

s	the current image state
out_buf	Points to one line after the output buffer.
out_end	end of line in output buffer
pixelstride	pixel stride of input buffer

Returns

size of output in bytes, else return error code.

Definition at line 46 of file sgidec.c.

Referenced by read_rle_sgi().

static int read_rle_sgi ( uint8_t *  out_buf, SgiState *  s  )

static

Read a run length encoded SGI image.

Parameters

out_buf	output buffer
s	the current image state

Returns

0 if no error, else return error code.

Definition at line 87 of file sgidec.c.

Referenced by decode_frame().

static int read_uncompressed_sgi ( unsigned char *  out_buf, SgiState *  s  )

static

Read an uncompressed SGI image.

Parameters

out_buf	output buffer
s	the current image state

Returns

0 if read success, else return error code.

Definition at line 121 of file sgidec.c.

Referenced by decode_frame().

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

static

Definition at line 154 of file sgidec.c.

Variable Documentation

AVCodec ff_sgi_decoder

Initial value:

= {
    .name           = "sgi",
    .long_name      = NULL_IF_CONFIG_SMALL("SGI image"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_SGI,
    .priv_data_size = sizeof(SgiState),
    .decode         = decode_frame,
    .capabilities   = CODEC_CAP_DR1,
}

Definition at line 234 of file sgidec.c.