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

Typedefs

typedef struct SgiState SgiState

Functions

static int expand_rle_row (SgiState *s, uint8_t *out_buf, int len, 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, uint8_t *out_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)
static av_cold int sgi_decode_init (AVCodecContext *avctx)

Variables

AVCodec ff_sgi_decoder

Typedef Documentation

typedef struct SgiState SgiState

Function Documentation

static int decode_frame ( AVCodecContext avctx,
void data,
int *  data_size,
AVPacket avpkt 
) [static]

Definition at line 156 of file sgidec.c.

static int expand_rle_row ( SgiState s,
uint8_t *  out_buf,
int  len,
int  pixelstride 
) [static]

Expand an RLE row into a channel.

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

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_bufoutput buffer
sthe current image state
Returns:
0 if no error, else return error number.

Definition at line 88 of file sgidec.c.

Referenced by decode_frame().

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

Read an uncompressed SGI image.

Parameters:
out_bufoutput buffer
out_endend ofoutput buffer
sthe current image state
Returns:
0 if read success, otherwise return -1.

Definition at line 123 of file sgidec.c.

Referenced by decode_frame().

static av_cold int sgi_decode_init ( AVCodecContext avctx) [static]

Definition at line 265 of file sgidec.c.

static av_cold int sgi_end ( AVCodecContext avctx) [static]

Definition at line 255 of file sgidec.c.

static av_cold int sgi_init ( AVCodecContext avctx) [static]

Definition at line 246 of file sgidec.c.


Variable Documentation

Initial value:
 {
    .name           = "sgi",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = CODEC_ID_SGI,
    .priv_data_size = sizeof(SgiState),
    .init           = sgi_init,
    .close          = sgi_end,
    .decode         = decode_frame,
    .init           = sgi_decode_init,
    .long_name = NULL_IF_CONFIG_SMALL("SGI image"),
}

Definition at line 274 of file sgidec.c.