gdi0.c

车载电子影音系统dvd播放系统原程序代码

#include "winav.h"
#include "gdi.h"


extern DWORD    _dwGDITemp;
extern WORD     _wGDITemp;
extern BYTE     _bGDITemp;


// This function must be put in Common bank
void GDI_OutputText(WORD code *pw)
{
#ifndef NO_GDI

    BYTE bLength, bStart;

    // Brian1.21, only OSDND need this special process
    // move it to OSDN module to reduce common bank 
/*
    // Brian1.00
    if (__bGDIMacroParam)
    {
        _wGDITemp = GDI_GetCodeStringWidth(pw);
        if (__wGDIx >_wGDITemp)
        {
            // for OSDVP, it may need to minus the string width first.
            __wGDIx -= _wGDITemp;
        }
        else
        {
            // string too long
            __wGDIx = 0;
        }

    }
*/

    bLength = (BYTE)pw[0];
    bStart = 1;
    while (bLength)
    {
        if (bLength > GDI_STRING_LENGTH)
        {
            
            for (_bGDITemp=bStart; _bGDITemp < (bStart+GDI_STRING_LENGTH); _bGDITemp++)
                __wGDIString[_bGDITemp-bStart+1] = pw[_bGDITemp];
            __wGDIString[0] = GDI_STRING_LENGTH;
            bLength -= GDI_STRING_LENGTH;
            bStart += GDI_STRING_LENGTH;
        }
        else
        {
            for (_bGDITemp=bStart; _bGDITemp < (bStart+bLength); _bGDITemp++)
                __wGDIString[_bGDITemp-bStart+1] = pw[_bGDITemp];
            __wGDIString[0] = bLength;
            bLength = 0;
        }
        GDI_DRAW_STRING(__wGDIx, __wGDIy);
        __wGDIx += GDI_GetStringWidth();
    }
#endif //#ifndef NO_GDI
}

// This function must be put in Common bank
void GDI_CopyCodeString(WORD code *pw)
{
#ifndef NO_GDI

    for (_bGDITemp=0; _bGDITemp<=pw[0] && _bGDITemp<=GDI_STRING_LENGTH; _bGDITemp++)
        __wGDIString[_bGDITemp] = pw[_bGDITemp];
#endif //#ifndef NO_GDI
}

WORD GDI_GetCodeStringWidth(WORD code *pw)
{
#ifndef NO_GDI
    _dwGDITemp = 0;
    // calculate total text width
    for (_bGDITemp=0; _bGDITemp<pw[0]; _bGDITemp++)
    {
        _dwGDITemp += (pw[_bGDITemp+1] & 0xF000) >> 10; // get width ( >> 12 * 4)
    }

    return (WORD)_dwGDITemp;
#else
    return 0;

#endif //#ifndef NO_GDI
}