libavcodec/sgidec.c File Reference

#include "libavutil/imgutils.h"
#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, 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 decode_frame ( AVCodecContext avctx,
void *  data,
int *  data_size,
AVPacket avpkt 
) [static]

Definition at line 151 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 45 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 85 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 125 of file sgidec.c.

Referenced by decode_frame().

static av_cold int sgi_end ( AVCodecContext avctx  )  [static]

Definition at line 252 of file sgidec.c.

static av_cold int sgi_init ( AVCodecContext avctx  )  [static]

Definition at line 243 of file sgidec.c.


Variable Documentation

Initial value:

 {
    "sgi",
    AVMEDIA_TYPE_VIDEO,
    CODEC_ID_SGI,
    sizeof(SgiState),
    sgi_init,
    NULL,
    sgi_end,
    decode_frame,
    .long_name = NULL_IF_CONFIG_SMALL("SGI image"),
}

Definition at line 262 of file sgidec.c.


Generated on Fri Oct 26 02:38:18 2012 for FFmpeg by  doxygen 1.5.8