libavcodec/sgidec.c File Reference

#include "avcodec.h"
#include "bytestream.h"
#include "sgi.h"

Go to the source code of this file.

Data Structures

struct  SgiState

Functions

static int expand_rle_row (const uint8_t *in_buf, const uint8_t *in_end, unsigned char *out_buf, uint8_t *out_end, int pixelstride)
 Expand an RLE row into a channel.
static int read_rle_sgi (unsigned char *out_buf, const uint8_t *in_buf, const uint8_t *in_end, SgiState *s)
 Read a run length encoded SGI image.
static int read_uncompressed_sgi (unsigned char *out_buf, uint8_t *out_end, const uint8_t *in_buf, const uint8_t *in_end, SgiState *s)
 Read an uncompressed SGI image.
static int decode_frame (AVCodecContext *avctx, void *data, int *data_size, const uint8_t *in_buf, int buf_size)
static int sgi_init (AVCodecContext *avctx)
static int sgi_end (AVCodecContext *avctx)

Variables

AVCodec sgi_decoder


Function Documentation

static int decode_frame ( AVCodecContext avctx,
void *  data,
int *  data_size,
const uint8_t in_buf,
int  buf_size 
) [static]

Definition at line 148 of file sgidec.c.

static int expand_rle_row ( const uint8_t in_buf,
const uint8_t in_end,
unsigned char *  out_buf,
uint8_t out_end,
int  pixelstride 
) [static]

Expand an RLE row into a channel.

Parameters:
in_buf input buffer
in_end end of input buffer
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, -1 if buffer overflows

Definition at line 43 of file sgidec.c.

Referenced by read_rle_sgi().

static int read_rle_sgi ( unsigned char *  out_buf,
const uint8_t in_buf,
const uint8_t in_end,
SgiState s 
) [static]

Read a run length encoded SGI image.

Parameters:
out_buf output buffer
in_buf input buffer
in_end end of input buffer
s the current image state
Returns:
0 if no error, else return error number.

Definition at line 83 of file sgidec.c.

Referenced by decode_frame().

static int read_uncompressed_sgi ( unsigned char *  out_buf,
uint8_t out_end,
const uint8_t in_buf,
const uint8_t in_end,
SgiState s 
) [static]

Read an uncompressed SGI image.

Parameters:
out_buf output buffer
out_end end ofoutput buffer
in_buf input buffer
in_end end of input buffer
s the current image state
Returns:
0 if read success, otherwise return -1.

Definition at line 123 of file sgidec.c.

Referenced by decode_frame().

static int sgi_end ( AVCodecContext avctx  )  [static]

Definition at line 247 of file sgidec.c.

static int sgi_init ( AVCodecContext avctx  )  [static]

Definition at line 238 of file sgidec.c.


Variable Documentation

Initial value:

Definition at line 257 of file sgidec.c.


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