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Data Structures | Functions | Variables
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)
 
static av_cold int sgi_init (AVCodecContext *avctx)
 
static av_cold int sgi_end (AVCodecContext *avctx)
 

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
sthe current image state
out_bufPoints to one line after the output buffer.
out_endend of line in output buffer
pixelstridepixel stride of input buffer
Returns
size of output in bytes, -1 if buffer overflows

Definition at line 47 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_bufoutput buffer
sthe current image state
Returns
0 if no error, else return error number.

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_bufoutput buffer
sthe current image state
Returns
0 if read success, otherwise return -1.

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.

static av_cold int sgi_init ( AVCodecContext avctx)
static

Definition at line 244 of file sgidec.c.

static av_cold int sgi_end ( AVCodecContext avctx)
static

Definition at line 253 of file sgidec.c.

Variable Documentation

AVCodec ff_sgi_decoder
Initial value:
= {
.name = "sgi",
.priv_data_size = sizeof(SgiState),
.long_name = NULL_IF_CONFIG_SMALL("SGI image"),
.capabilities = CODEC_CAP_DR1,
}

Definition at line 263 of file sgidec.c.