sga.c File Reference

#include "libavutil/common.h"
#include "avcodec.h"
#include "get_bits.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"

Go to the source code of this file.

Data Structures
struct	SGAVideoContext

Macros
#define	PALDATA_FOLLOWS_TILEDATA   4
#define	HAVE_COMPRESSED_TILEMAP   32
#define	HAVE_TILEMAP   128

Functions
static av_cold int	sga_decode_init (AVCodecContext *avctx)
static int	decode_palette (GetByteContext *gb, uint32_t *pal)
static int	decode_index_palmap (SGAVideoContext *s, AVFrame *frame)
static int	decode_index_tilemap (SGAVideoContext *s, AVFrame *frame)
static int	decode_index (SGAVideoContext *s, AVFrame *frame)
static int	lzss_decompress (AVCodecContext *avctx, GetByteContext *gb, uint8_t *dst, int dst_size, int shift, int plus)
static int	decode_palmapdata (AVCodecContext *avctx)
static int	decode_tiledata (AVCodecContext *avctx)
static int	sga_decode_frame (AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *avpkt)
static av_cold int	sga_decode_end (AVCodecContext *avctx)

Variables
const FFCodec	ff_sga_decoder

Macro Definition Documentation

PALDATA_FOLLOWS_TILEDATA

#define PALDATA_FOLLOWS_TILEDATA   4

Definition at line 28 of file sga.c.

HAVE_COMPRESSED_TILEMAP

#define HAVE_COMPRESSED_TILEMAP   32

Definition at line 29 of file sga.c.

HAVE_TILEMAP

#define HAVE_TILEMAP   128

Definition at line 30 of file sga.c.

Function Documentation

sga_decode_init()

static av_cold int sga_decode_init ( AVCodecContext *  avctx )

static

Definition at line 61 of file sga.c.

decode_palette()

static int decode_palette ( GetByteContext *  gb, uint32_t *  pal  )

static

Definition at line 67 of file sga.c.

Referenced by sga_decode_frame().

decode_index_palmap()

static int decode_index_palmap ( SGAVideoContext *  s, AVFrame *  frame  )

static

Definition at line 106 of file sga.c.

Referenced by sga_decode_frame().

decode_index_tilemap()

static int decode_index_tilemap ( SGAVideoContext *  s, AVFrame *  frame  )

static

Definition at line 128 of file sga.c.

Referenced by sga_decode_frame().

decode_index()

static int decode_index ( SGAVideoContext *  s, AVFrame *  frame  )

static

Definition at line 180 of file sga.c.

Referenced by sga_decode_frame().

lzss_decompress()

static int lzss_decompress ( AVCodecContext *  avctx, GetByteContext *  gb, uint8_t *  dst, int  dst_size, int  shift, int  plus  )

static

Definition at line 200 of file sga.c.

Referenced by sga_decode_frame().

decode_palmapdata()

static int decode_palmapdata ( AVCodecContext *  avctx )

static

Definition at line 250 of file sga.c.

Referenced by sga_decode_frame().

decode_tiledata()

static int decode_tiledata ( AVCodecContext *  avctx )

static

Definition at line 274 of file sga.c.

Referenced by sga_decode_frame().

sga_decode_frame()

static int sga_decode_frame ( AVCodecContext *  avctx, AVFrame *  frame, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 308 of file sga.c.

sga_decode_end()

static av_cold int sga_decode_end ( AVCodecContext *  avctx )

static

Definition at line 512 of file sga.c.

Variable Documentation

ff_sga_decoder

const FFCodec ff_sga_decoder

Initial value:

= {
    .p.name         = "sga",
    CODEC_LONG_NAME("Digital Pictures SGA Video"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_SGA_VIDEO,
    .priv_data_size = sizeof(SGAVideoContext),
    .init           = sga_decode_init,
    FF_CODEC_DECODE_CB(sga_decode_frame),
    .close          = sga_decode_end,
    .p.capabilities = AV_CODEC_CAP_DR1,
}

Definition at line 525 of file sga.c.