c93.c File Reference

#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	C93DecoderContext

Macros
#define	WIDTH   320
#define	HEIGHT   192
#define	C93_HAS_PALETTE   0x01
#define	C93_FIRST_FRAME   0x02

Enumerations
enum	C93BlockType {   C93_8X8_FROM_PREV = 0x02, C93_4X4_FROM_PREV = 0x06, C93_4X4_FROM_CURR = 0x07, C93_8X8_2COLOR = 0x08,   C93_4X4_2COLOR = 0x0A, C93_4X4_4COLOR_GRP = 0x0B, C93_4X4_4COLOR = 0x0D, C93_NOOP = 0x0E,   C93_8X8_INTRA = 0x0F }

Functions
static av_cold int	decode_end (AVCodecContext *avctx)
static av_cold int	decode_init (AVCodecContext *avctx)
static int	copy_block (AVCodecContext *avctx, uint8_t *to, uint8_t *from, int offset, int height, int stride)
static void	draw_n_color (uint8_t *out, int stride, int width, int height, int bpp, uint8_t cols[4], uint8_t grps[4], uint32_t col)
static int	decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)

Variables
AVCodec	ff_c93_decoder

Macro Definition Documentation

WIDTH

#define WIDTH   320

Definition at line 43 of file c93.c.

Referenced by copy_block(), and decode_frame().

HEIGHT

#define HEIGHT   192

Definition at line 44 of file c93.c.

Referenced by copy_block(), and decode_frame().

C93_HAS_PALETTE

#define C93_HAS_PALETTE   0x01

Definition at line 46 of file c93.c.

Referenced by decode_frame().

C93_FIRST_FRAME

#define C93_FIRST_FRAME   0x02

Definition at line 47 of file c93.c.

Referenced by decode_frame().

Enumeration Type Documentation

C93BlockType

enum C93BlockType

Enumerator
C93_8X8_FROM_PREV
C93_4X4_FROM_PREV
C93_4X4_FROM_CURR
C93_8X8_2COLOR
C93_4X4_2COLOR
C93_4X4_4COLOR_GRP
C93_4X4_4COLOR
C93_NOOP
C93_8X8_INTRA

Definition at line 31 of file c93.c.

Function Documentation

decode_end()

static av_cold int decode_end ( AVCodecContext *  avctx )

static

Definition at line 49 of file c93.c.

Referenced by decode_init().

decode_init()

static av_cold int decode_init ( AVCodecContext *  avctx )

static

Definition at line 59 of file c93.c.

copy_block()

static int copy_block ( AVCodecContext *  avctx, uint8_t *  to, uint8_t *  from, int  offset, int  height, int  stride  )

inlinestatic

Definition at line 74 of file c93.c.

Referenced by decode_frame().

draw_n_color()

static void draw_n_color ( uint8_t *  out, int  stride, int  width, int  height, int  bpp, uint8_t  cols[4], uint8_t  grps[4], uint32_t  col  )

inlinestatic

Definition at line 108 of file c93.c.

Referenced by decode_frame().

decode_frame()

static int decode_frame ( AVCodecContext *  avctx, void *  data, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 124 of file c93.c.

Variable Documentation

ff_c93_decoder

AVCodec ff_c93_decoder

Initial value:

= {
    .name           = "c93",
    .long_name      = NULL_IF_CONFIG_SMALL("Interplay C93"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_C93,
    .priv_data_size = sizeof(C93DecoderContext),
    .init           = decode_init,
    .close          = decode_end,
    .decode         = decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1,
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
}

Definition at line 262 of file c93.c.