libavcodec/cdgraphics.c File Reference

static void cdg_fill_wrapper	(	int	out_tl_x,
		int	out_tl_y,
		uint8_t *	out,
		int	in_tl_x,
		int	in_tl_y,
		uint8_t *	in,
		int	color,
		int	w,
		int	h,
		int	stride,
		int	roll
	)			`[static]`

Definition at line 194 of file cdgraphics.c.

Referenced by cdg_scroll().

static void cdg_init_frame ( AVFrame * frame ) [static]

Definition at line 71 of file cdgraphics.c.

Referenced by cdg_decode_frame(), and cdg_decode_init().

static void cdg_load_palette	(	CDGraphicsContext *	cc,
		uint8_t *	data,
		int	low
	)			`[static]`

Definition at line 116 of file cdgraphics.c.

Referenced by cdg_decode_frame().

static void cdg_scroll	(	CDGraphicsContext *	cc,
		uint8_t *	data,
		AVFrame *	new_frame,
		int	roll_over
	)			`[static]`

find the difference and save the offset for cdg_tile_block usage

Definition at line 206 of file cdgraphics.c.

Referenced by cdg_decode_frame().

static int cdg_tile_block	(	CDGraphicsContext *	cc,
		uint8_t *	data,
		int	b
	)			`[static]`

Definition at line 134 of file cdgraphics.c.

Referenced by cdg_decode_frame().

Variable Documentation

AVCodec ff_cdgraphics_decoder

Initial value:

 {
    .name           = "cdgraphics",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = CODEC_ID_CDGRAPHICS,
    .priv_data_size = sizeof(CDGraphicsContext),
    .init           = cdg_decode_init,
    .close          = cdg_decode_end,
    .decode         = cdg_decode_frame,
    .capabilities   = CODEC_CAP_DR1,
    .long_name = NULL_IF_CONFIG_SMALL("CD Graphics video"),
}

Definition at line 370 of file cdgraphics.c.


Data Structures
struct	CDGraphicsContext
Defines
#define	CDG_FULL_WIDTH 300
	default screen sizes
#define	CDG_FULL_HEIGHT 216
#define	CDG_DISPLAY_WIDTH 294
#define	CDG_DISPLAY_HEIGHT 204
#define	CDG_BORDER_WIDTH 6
#define	CDG_BORDER_HEIGHT 12
#define	CDG_COMMAND 0x09
	masks
#define	CDG_MASK 0x3F
#define	CDG_INST_MEMORY_PRESET 1
	instruction codes
#define	CDG_INST_BORDER_PRESET 2
#define	CDG_INST_TILE_BLOCK 6
#define	CDG_INST_SCROLL_PRESET 20
#define	CDG_INST_SCROLL_COPY 24
#define	CDG_INST_LOAD_PAL_LO 30
#define	CDG_INST_LOAD_PAL_HIGH 31
#define	CDG_INST_TILE_BLOCK_XOR 38
#define	CDG_PACKET_SIZE 24
	data sizes
#define	CDG_DATA_SIZE 16
#define	CDG_TILE_HEIGHT 12
#define	CDG_TILE_WIDTH 6
#define	CDG_MINIMUM_PKT_SIZE 6
#define	CDG_MINIMUM_SCROLL_SIZE 3
#define	CDG_HEADER_SIZE 8
#define	CDG_PALETTE_SIZE 16
#define	UP 2
#define	DOWN 1
#define	LEFT 2
#define	RIGHT 1
Functions
static void	cdg_init_frame (AVFrame *frame)
static av_cold int	cdg_decode_init (AVCodecContext *avctx)
static void	cdg_border_preset (CDGraphicsContext cc, uint8_t data)
static void	cdg_load_palette (CDGraphicsContext cc, uint8_t data, int low)
static int	cdg_tile_block (CDGraphicsContext cc, uint8_t data, int b)
static void	cdg_copy_rect_buf (int out_tl_x, int out_tl_y, uint8_t out, int in_tl_x, int in_tl_y, uint8_t in, int w, int h, int stride)
static void	cdg_fill_rect_preset (int tl_x, int tl_y, uint8_t *out, int color, int w, int h, int stride)
static void	cdg_fill_wrapper (int out_tl_x, int out_tl_y, uint8_t out, int in_tl_x, int in_tl_y, uint8_t in, int color, int w, int h, int stride, int roll)
static void	cdg_scroll (CDGraphicsContext cc, uint8_t data, AVFrame *new_frame, int roll_over)
static int	cdg_decode_frame (AVCodecContext avctx, void data, int data_size, AVPacket avpkt)
static av_cold int	cdg_decode_end (AVCodecContext *avctx)
Variables
AVCodec	ff_cdgraphics_decoder