tidtv_fontpool.c

ti的数字电视芯片 tvp9000的源码

/*******************************************************************************
*	@ModuleName  ::	TiDTV_FontPool.c
*	
*	@Copyright	 ::	Copyright 2005- Texas Instruments, Inc.
*	
*	@Description ::	TI DTV Bitmapped Font Data
*	
*	@History     ::
*---------------------------------------
*	04-21-2005	W.Shi	Created
*******************************************************************************/

#include	"TiDTV_DataType.h"
#include	"TiDTV_GLib.h"

extern const UCHAR *pTiDTV_Font1_h20[];		// Small size
extern const UCHAR *pTiDTV_Font1_h24[];		// Defined in "ShincoDTV_Font1.c": Standard size
extern const UCHAR *pTiDTV_Font1_h28[];		// Large size

extern const UCHAR *pTiDTV_Font2_h20[];		// Small size
extern const UCHAR *pTiDTV_Font2_h24[];		// Defined in "ShincoDTV_Font2.c": Standard size
extern const UCHAR *pTiDTV_Font2_h28[];		// Large size

extern const UCHAR *pTiDTV_Font3_h20[];		// Small size
extern const UCHAR *pTiDTV_Font3_h24[];		// Defined in "ShincoDTV_Font3.c": Standard size
extern const UCHAR *pTiDTV_Font3_h28[];		// Large size

extern const UCHAR *pTiDTV_Font4_h20[];		// Small size
extern const UCHAR *pTiDTV_Font4_h24[];		// Defined in "ShincoDTV_Font4.c": Standard size
extern const UCHAR *pTiDTV_Font4_h28[];		// Large size

extern const UCHAR *pTiDTV_Font5_h20[];		// Small size
extern const UCHAR *pTiDTV_Font5_h24[];		// Defined in "ShincoDTV_Font5.c": Standard size
extern const UCHAR *pTiDTV_Font5_h28[];		// Large size

extern const UCHAR *pTiDTV_Font6_h20[];		// Small size
extern const UCHAR *pTiDTV_Font6_h24[];		// Defined in "ShincoDTV_Font6.c": Standard size
extern const UCHAR *pTiDTV_Font6_h28[];		// Large size

extern const UCHAR *pTiDTV_Font7_h20[];		// Small size
extern const UCHAR *pTiDTV_Font7_h24[];		// Defined in "ShincoDTV_Font7.c": Standard size
extern const UCHAR *pTiDTV_Font7_h28[];		// Large size

const UCHAR **pTiDTV_Eia708Font[] = {
	pTiDTV_Font4_h20,		// Small size
	pTiDTV_Font4_h24,		// Standard size
	pTiDTV_Font4_h28,		// Large size
	
	pTiDTV_Font1_h20,		// Small size
	pTiDTV_Font1_h24,		// Standard size
	pTiDTV_Font1_h28,		// Large size
	
	pTiDTV_Font2_h20,		// Small size
	pTiDTV_Font2_h24,		// Standard size
	pTiDTV_Font2_h28,		// Large size

	pTiDTV_Font3_h24,		// Standard size
	pTiDTV_Font3_h20,		// Small size
	pTiDTV_Font3_h28,		// Large size

	pTiDTV_Font4_h20,		// Small size
	pTiDTV_Font4_h24,		// Standard size
	pTiDTV_Font4_h28,		// Large size
	
	pTiDTV_Font5_h20,		// Small size
	pTiDTV_Font5_h24,		// Standard size
	pTiDTV_Font5_h28,		// Large size
	
	pTiDTV_Font6_h20,		// Small size
	pTiDTV_Font6_h24,		// Standard size
	pTiDTV_Font6_h28,		// Large size
	
	pTiDTV_Font7_h20,		// Small size
	pTiDTV_Font7_h24,		// Standard size
	pTiDTV_Font7_h28,		// Large size
};

const UCHAR TiDTV_FontCellSize[][2] = {
	{20 + 2, 20 + 4},
	{24 + 2, 24 + 4},
	{28 + 2, 28 + 4},
};

/*******************************************************************************
*	@RoutineName:: TiDTV_OsdGetCharPattern
*
*	@Description:: Get the bitmap pattern of the Character:
*					called by void TiDTV_OsdDrawChar()
*				(can be used for both Bitmapped font and True Type Font)
*
*	@Input		::
*		USHORT CharCode				: Character code
*		pOsdWindow->Attrib			: character attributes
*
*	@Output		::
*		pOsdWindow->CurCharPattern.CellWidth	: Cell width
*		pOsdWindow->CurCharPattern.CellHeight	: Cell Height
*		pOsdWindow->CurCharPattern.DeltaX		: X-Offset for drawing the character
*		pOsdWindow->CurCharPattern.DeltaY		: Y-Offset for drawing the character
*		pOsdWindow->CurCharPattern.Width		: Character pixel Width
*		pOsdWindow->CurCharPattern.Height		: Character pixel Height
*		pOsdWindow->CurCharPattern.pBitmap		: the pointer to Bitmap data: 1-bpp
*
*	@Return		:: none
*******************************************************************************/
void TiDTV_OsdGetCharPattern(USHORT CharCode, TI_DTV_OSD_WINDOW *pOsdWindow)
{
	USHORT Font = CharCode & TI_DTV_CHAR_SET_MASK;
	TI_DTV_G_CHAR *pCharPattern = &pOsdWindow->CurCharPattern;
	UCHAR *pFontSize = (UCHAR *) &(TiDTV_FontCellSize[pOsdWindow->CurCharAttrib.Bits.FontSize][0]);
	UCHAR *pCharBitMap;
	
	// Cell size for a character/space: default
	if (pCharPattern->CellWidth == 0)
		pCharPattern->CellWidth = *pFontSize;
	if (pCharPattern->CellHeight == 0)
		pCharPattern->CellHeight = *(pFontSize + 1);
	
	// Init the pointer to the Bitmap data: 1-bpp
	pCharPattern->pBitmap = (UCHAR *) 0;
	
	switch (Font) {
		case TI_DTV_CHAR_SET_EIA708B:			// EIA-708-B Characters set: Latin Characters
			Font = (CharCode & 0x0E00) >> 9;	// Font code
			CharCode &= 0x01ff;		// clear the Font Code, and get the real Character Code
			if (CharCode != 0) {
				Font = Font * 3 + pOsdWindow->CurCharAttrib.Bits.FontSize;
				
				// pointer to the Bitmap data: 1-bpp
				pCharBitMap = (UCHAR *) (long) (pTiDTV_Eia708Font[Font][CharCode - 1]);
				
				// Character pixel size: Width x Height
				pCharPattern->Width = *pCharBitMap++;
				pCharPattern->Height = *pCharBitMap++;
				pCharPattern->pBitmap = pCharBitMap;
				
				// Cell size for a character/space
				if (pOsdWindow->CurCharAttrib.Bits.AutoCellSize) {
					// Automatic Adjust Cell Size
					pCharPattern->CellWidth = (pCharPattern->Width & 0x7f) + 2;
					pCharPattern->CellHeight = (pCharPattern->Height & 0x7f) + 4;
					
					// Offset of X/Y position for drawing the character
					pCharPattern->DeltaX = pCharPattern->DeltaY = 0;
				}
			}
			break;
			
		case TI_DTV_CHAR_SET_CHINESE:		// Chinese Characters set
			break;
			
		case TI_DTV_CHAR_SET_JAPANESE:		// Japanese Characters set
			break;
			
		default:	// invalid code: ignore
			break;	// should never get here !
	}
}