source: svn/trunk/zasc/app_c/DST_FontEngine.c @ 40

/********************************************************************
*  DST_NewFontEngine.c
*       -Font Engine
*
*  Copyright (c)2008 Digital STREAM Tech, Inc.
*  All Rights Reserved
*
*  $Id: DST_FontEngine.cpp,v 1.5 2012/04/12 05:39:08 megakiss Exp $
*********************************************************************/
#include "DST_Common.h"
#include "DST_FontEngine.h"

#include "freetype/ftoutln.h"
#include FT_FREETYPE_H

static int DST_GetFontBaseLine(int nSize);
static int DST_GetFontEdgeWidth(int nFontSize);

#define DYNAMIC_MEMORY 0
// ÆùÆ®¿ë ij½¬ ±¸Á¶
#define CACHE_MAX 100
#define FONT_BUFF_SIZE 600
typedef struct _FontCache
{
        DS_U32 nCode;
        DS_U8 nSize;
        DS_U8 nStyle;
        DS_U8 nOffset; // Áö¿ø ÇÊ¿ä
        bool bItalic;
        DS_S16 x;
        DS_S16 y;
        DS_S16 w;
        DS_S16 h;
        DS_S16 width; // ´ÙÀ½ ±ÛÀÚÀÇ À§Ä¡
#if DYNAMIC_MEMORY
        DS_U8 *buff;
#else
        DS_U8 buff[FONT_BUFF_SIZE];
#endif
} FontCache;

static FontCache fontCache[CACHE_MAX];

static DS_U32 DST_U8ToU32(DS_U8* buff)
{
        return buff[0]*256*256*256+buff[1]*256*256+buff[2]*256+buff[3];
}

// ´ÜÀÏ Å½ºÅ©·Î CC ¹× OSD¸¦ ±×¸±¿¹Á¤À̹ǷΠ¼¼¸¶Æ÷¾î¸¦ ¾²Áö ¾ÊÀ½
static int DST_GetFont(DS_U32 nCode, DS_U8 nSize, DS_U8 nStyle, DS_U8 nOffset, bool bItalic)
{
        static int nCacheCount = 0;
        static int nCachePosition = -1;
        static FT_Library DST_g_FT_library;
        static FT_Face DST_g_FT_Face[2];
        int x = 0; // Àӽà º¯¼ö

        static bool bFirst = true;
        if (bFirst == true)
        {
                bFirst = false;
                FT_Init_FreeType( &DST_g_FT_library );
                extern DS_U8 UnDotumBold[];
                extern DS_U8 Special[];
                FT_New_Memory_Face(DST_g_FT_library, &UnDotumBold[5], DST_U8ToU32((DS_U8*)&UnDotumBold[1]), 0, &DST_g_FT_Face[0]);
                FT_New_Memory_Face(DST_g_FT_library, &Special[5], DST_U8ToU32((DS_U8*)&Special[1]), 0, &DST_g_FT_Face[1]);
                memset(fontCache, 0, CACHE_MAX * sizeof(FontCache)); // ij½¬ Á¤º¸ ÃʱâÈ­
                DST_Printf("DST_g_FT_Face[0]=%d\n", (int)DST_g_FT_Face[0]);
                DST_Printf("DST_g_FT_Face[1]=%d\n", (int)DST_g_FT_Face[1]);
                DST_Printf("Font Engine Initialized\n");
                FT_Int major = 0, minor = 0, patch = 0;
                FT_Library_Version( DST_g_FT_library, &major, &minor, &patch);
                DST_Printf("FreeType Library Version %d.%d.%d\n", major, minor, patch);
        }
        // ÄÚµå °ü·Ã º¸Á¤
        if (nCode == 0x2013) nCode = '-'; // hack.trpÀÇ ETT
        if (nCode == 0x00A0) nCode = 0x20;
        if (nCode == 0x3000) nCode = 0x20; // UniCode ÀÇ ÆøÀÌ ³ÐÀº °ø¹é ¹®ÀÚ¸¦ ÆøÀÌ Á¼Àº °ø¹é ¹®ÀÚ·Î ´ëüÇÑ´Ù. (SBS)
        if (nCode == 0xF90A) nCode = 0x91D1; // ÐÝÀÇ µ¿ÀÚ
        // ½ºÅ¸ÀÏ °ü·Ã º¸Á¤
        nStyle = 0;
        if (nCode == 0x26A0) nStyle = 1; // Ư¼ö¹®ÀÚ Warning
        if (nCode <  0x0020) nStyle = 1; // Ư¼ö¹®ÀÚ
        if (nCode >=  0xE000 && nCode <= 0xEFFF) nStyle = 1; // »ç¿ëÀÚ Á¤ÀÇ ¿µ¿ª
                
        // ÀºÆùÆ®¿¡ ¾ø´Â À¯´ÏÄÚµå
        if (nCode == 0x00AD) nCode = '-'; // Unicode Character 'SOFT HYPHEN' (U+00AD)
        if (nCode == 0x0160) nStyle =1; 
        if (nCode == 0x0160) nStyle =1; // Unicode Character 'LATIN CAPITAL LETTER S WITH CARON' (U+0160)
        if (nCode == 0x0161) nStyle =1; //Unicode Character 'LATIN SMALL LETTER S WITH CARON' (U+0161)
        if (nCode == 0x2588) nCode = 0x25A0; // Unicode Character 'FULL BLOCK' (U+2588) 
        if (nCode == 0x2022) nStyle =1; // Unicode Character 'BULLET' (U+2022)
        if (nCode == 0x2120) nStyle =1; // Unicode Character 'SERVICE MARK' (U+2120)
        if (nCode == 0x0178) nStyle =1; // LATIN CAPITAL LETTER Y WITH DIAERESIS' (U+0178)
        if (nCode == 0x215B) nStyle =1; // Unicode Character 'VULGAR FRACTION ONE EIGHTH' (U+215B)
        if (nCode == 0x215C) nStyle =1; // Unicode Character 'VULGAR FRACTION THREE EIGHTHS' (U+215C)
        if (nCode == 0x215D) nStyle =1; // Unicode Character 'VULGAR FRACTION FIVE EIGHTHS' (U+215D)
        if (nCode == 0x215E) nStyle =1; // Unicode Character 'VULGAR FRACTION SEVEN EIGHTHS' (U+215E)
        if (nCode == 0xE1A0) nStyle =1; // [CC] ¹®ÀÚ »ç¿ëÀÚ Á¤ÀÇ
                
        // ij½¬¿¡¼­ ÀÏÄ¡ÇÏ´Â Á¤º¸¸¦ ã´Â´Ù
        for (x = 0; x < nCacheCount; x++)
        {
                if (fontCache[x].nCode != nCode) continue;
                if (fontCache[x].nSize != nSize) continue;
                if (fontCache[x].nStyle != nStyle) continue;
                if (fontCache[x].nOffset != nOffset) continue;
                if (fontCache[x].bItalic != bItalic) continue;
                return x;
        }
  if (FT_Set_Pixel_Sizes( DST_g_FT_Face[nStyle], 0, nSize )) return DST_GetFont(0x0020, nSize, nStyle, nOffset, bItalic);
  FT_Matrix matrix = { 0x10000, 0x0, 0x0, 0x10000};
  FT_Vector pen = {0, 0};
  matrix.xy = bItalic ? 0x34fd : 0; // ÀÌÅŸ¯ ¼³Á¤

  if (nOffset != 0) // ÷ÀÚ Ã³¸®
  {
      matrix.xx = (matrix.xx * 70) / 100; // 70%»çÀÌÁî
      matrix.xy = (matrix.xy * 70) / 100;
      matrix.yx = (matrix.yx * 70) / 100;
      matrix.yy = (matrix.yy * 70) / 100;
  }
  if (nOffset == 2) // À§Ã·ÀÚ
  {
      pen.x = 0;
      pen.y = (nSize * 64 * 37) / 100; // 30% À§·Î ¿Ã¸°´Ù.(37%À϶§ º¸±â ÁÁ´Ù.)
  }
  FT_Set_Transform( DST_g_FT_Face[nStyle], &matrix, &pen );
  FT_UInt  glyph_index = FT_Get_Char_Index( DST_g_FT_Face[nStyle], nCode );
  if (FT_Load_Glyph( DST_g_FT_Face[nStyle],glyph_index, FT_LOAD_DEFAULT )) return DST_GetFont(0x0020, nSize, nStyle, nOffset, bItalic);
  if (FT_Render_Glyph(DST_g_FT_Face[nStyle]->glyph, FT_RENDER_MODE_NORMAL)) return DST_GetFont(0x0020, nSize, nStyle, nOffset, bItalic);

        if (nCacheCount < CACHE_MAX) nCacheCount++;// ij½¬¿¡ Áý¾î³ÖÀÚ.
        nCachePosition++;
        if (nCachePosition == CACHE_MAX) nCachePosition = 0;
  fontCache[nCachePosition].nCode = nCode;
  fontCache[nCachePosition].nSize = nSize;
  fontCache[nCachePosition].nStyle = nStyle;
  fontCache[nCachePosition].bItalic = bItalic;
  fontCache[nCachePosition].nOffset = nOffset;

  fontCache[nCachePosition].x = DST_g_FT_Face[nStyle]->glyph->bitmap_left;
  fontCache[nCachePosition].y = DST_g_FT_Face[nStyle]->glyph->bitmap_top;
  fontCache[nCachePosition].w = DST_g_FT_Face[nStyle]->glyph->bitmap.width;
  fontCache[nCachePosition].h = DST_g_FT_Face[nStyle]->glyph->bitmap.rows;
  fontCache[nCachePosition].width = (DST_g_FT_Face[nStyle]->glyph->advance.x) >> 6;
#if DYNAMIC_MEMORY
  if (fontCache[nCachePosition].buff != 0) DST_OS_Free(&fontCache[nCachePosition].buff);
  fontCache[nCachePosition].buff = (DS_U8 *)DST_OS_Malloc(fontCache[nCachePosition].w * fontCache[nCachePosition].h);
#else
        // ÆùÆ®°¡ ÆùÆ® ¹öÆÛº¸´Ù Å©´Ù¸é ¾Æ·¡ÂÊÀ» Àß¶ó¼­ ¹ö¸°´Ù.
        if (fontCache[nCachePosition].w * fontCache[nCachePosition].h > FONT_BUFF_SIZE)
        {
                fontCache[nCachePosition].h = FONT_BUFF_SIZE / fontCache[nCachePosition].w;
        }
#endif
  memcpy(fontCache[nCachePosition].buff, DST_g_FT_Face[nStyle]->glyph->bitmap.buffer,
  fontCache[nCachePosition].w * fontCache[nCachePosition].h);

        return nCachePosition;
}

static int DST_GetFontEdgeWidth(int nFontSize)
{
        int nSize = nFontSize/5;
        if (nSize < 1) nSize = 1;
        return nSize;
}

// ÆùÆ®ÀÇ ³ôÀ̸¦ ±¸ÇÑ´Ù.
static int DST_g_FontHeight[256] = {0};
static int DST_g_FontBaseLine[256] = {0};

// ¿©·¯ ÆùÆ®¸¦ ¼¯¾î ¾²±â À§Çؼ­ ÇÊ¿äÇÑ ÀÛ¾÷
static void DST_GetFontHeightSub(int nSize)
{
        int nEdgeWidth = DST_GetFontEdgeWidth(nSize);
        int pos1 = DST_GetFont(0x6A, nSize, 0,0,false); // j
        int pos2 = DST_GetFont(0x203E, nSize, 0,0,false); // À§ÂÊ ¹Ù    
        DST_g_FontHeight[nSize] = fontCache[pos1].h - fontCache[pos1].y + fontCache[pos2].y + nEdgeWidth + nEdgeWidth;
        DST_g_FontBaseLine[nSize] = fontCache[pos2].y + nEdgeWidth+nEdgeWidth/3; // ³ª´®ÆùÆ®´Â nEdgeWidth/3 ¸¸Å­ ³»¸°´Ù.
}

// ÆùÆ®ÀÇ ³ôÀ̸¦ ¹ÝȯÇÑ´Ù.
int DST_GetFontHeight(int nSize)
{
        if (DST_g_FontHeight[nSize] == 0) DST_GetFontHeightSub(nSize);
        return DST_g_FontHeight[nSize];
}

// ÆùÆ®ÀÇ º£À̽º¶óÀαîÁöÀÇ °Å¸®¸¦ ¹ÝȯÇÑ´Ù.
static int DST_GetFontBaseLine(int nSize)
{
        if (DST_g_FontBaseLine[nSize] == 0) DST_GetFontHeightSub(nSize);
        return DST_g_FontBaseLine[nSize];
}

// ÀÔ·ÂµÈ ¹®ÀÚÁß °¡Àå Å« ÆùÆ® »çÀÌÁ ÃßÃâÇÑ´Ù.
static int DST_GetMaxFontSize(FONT_CC data[], int nCount)
{
        int i = 0;
        if (nCount == 0) return 0;
        int nMax = data[0].nSize;
        for (i = 0; i < nCount; i++)
        {
                if (nMax < data[i].nSize) nMax = data[i].nSize;
        }
        return nMax;
}

int DST_GetFontHeightCC(FONT_CC data[], int nCount)
{
  if (nCount == 0) return 0;
  return DST_GetFontHeight(DST_GetMaxFontSize(data, nCount));
}

// ÆùÆ®ÀÇ ³ÐÀ̸¦ ±¸ÇÑ´Ù.
int DST_GetFontWidthCC(FONT_CC data[], int nCount)
{
        int i = 0;
        if (nCount == 0) return 0;
        int nTotalWidth = 0;
        int nMaxWidth = 0;
        for (i = 0; i < nCount; i++)
        {
    // int nPos = DST_GetFontArib(data[i].nCode, data[i].nSize, data[i].nStyle, data[i].nOffset, data[i].bItalic);
    int nPos = DST_GetFont(data[i].nCode, data[i].nSize, data[i].nStyle,data[i].nOffset,data[i].bItalic);
            if (i==0) // ù¹ø° ±ÛÀÚÀÇ ¿ÞÂÊ »ßÁ®³²¿È Á¤µµ + Edge + margin
            {
              if (fontCache[nPos].x < 0) nTotalWidth -= fontCache[nPos].x;
              nTotalWidth += (DST_GetFontEdgeWidth(data[i].nSize) * 2); 
            }
            nTotalWidth = nTotalWidth + fontCache[nPos].width;
            // µ¥ÀÌÅÍÀÇ widthº¸´Ù ±×·ÁÁ®¾ßÇÏ´Â ÆùÆ®°¡ ¿À¸¥ÂÊÀ¸·Î ´õ »ßÁ®³ª¿Â´Ù¸é
            // ÀÌ°ÍÀ» ¸Æ½º·Î ÇؾßÇÑ´Ù. [hand.] µîÀÇ ¹®ÀÚ´Â
            // Çʱâü ÀÌÅŸ¯ÀÎ °æ¿ì dÀÇ ¿À¸¥ÂÊ ³¡ÀÌ '.' º¸´Ù ¹Û¿¡ ÀÖ´Â °æ¿ì¸¦ °í·ÁÇØ¾ß ÇÑ´Ù.
            int nDelta = fontCache[nPos].x + fontCache[nPos].w - fontCache[nPos].width;
            if (nDelta < 0) nDelta = 0;
            if (nTotalWidth + nDelta > nMaxWidth) nMaxWidth = nTotalWidth + nDelta;
            // ¸¶Áö¸· ±ÛÀÚÀÇ ¿§Áö Å©±â¸¸Å­ ¸¶Áø Àû¿ë
                if (i == nCount -1)  nMaxWidth += (DST_GetFontEdgeWidth(data[i].nSize) * 2);
        }
        return nMaxWidth;
}

static void DST_DrawBox(int des_w, int des_h, OSD_PIXEL_T* des, int x, int y, int w, int h, OSD_PIXEL_T color)
{
        if (des == 0 || w < 1 || h < 1 || des_w < 1 || des_h < 1) return;
        if (x < 0) x = 0;
        if (y < 0) y = 0;
        if (x + w > des_w) w = des_w - x;
        if (y + h > des_h) h = des_h - y;
        des += (des_w*y+x);
        int delta = des_w - w;
        while (h--)
        {
                int ww = w;
                while (ww--) *des++ = color;
                des += delta;
        }
}


OSD_PIXEL_T DST_SetColor(OSD_PIXEL_T a, OSD_PIXEL_T r, OSD_PIXEL_T g, OSD_PIXEL_T b)
{
        if (sizeof(OSD_PIXEL_T) == 2) // 16ºñÆ®ÀÎ °æ¿ì
        {
                OSD_PIXEL_T max = 0x0F;
                if (a > max) a = max;
                if (r > max) r = max;
                if (g > max) g = max;
                if (b > max) b = max;
                return (a<<12) | (r<<8) | (g<<4) | b;
        }
        // 32ºñÆ®ÀÎ °æ¿ì
        OSD_PIXEL_T max = 0xFF;
        if (a > max) a = max;
        if (r > max) r = max;
        if (g > max) g = max;
        if (b > max) b = max;
        return (a<<24) | (r<<16) | (g<<8) | b;
}

void DST_GetColor(OSD_PIXEL_T color, OSD_PIXEL_T *a, OSD_PIXEL_T *r, OSD_PIXEL_T *g, OSD_PIXEL_T *b)
{
        if (sizeof(OSD_PIXEL_T) == 1) // 8ºñÆ®ÀÎ °æ¿ì
        {
                return;
        }
        if (sizeof(OSD_PIXEL_T) == 2) // 16ºñÆ®ÀÎ °æ¿ì
        {
                OSD_PIXEL_T mask = 0x0F;
                *a = (color >> 12) & mask;
                *r = (color >>  8) & mask;
                *g = (color >>  4) & mask;
                *b = color & mask;
                return;
        }
        // 32ºñÆ®ÀÎ °æ¿ì
        OSD_PIXEL_T mask = 0xFF;
        *a = (color >> 24) & mask;
        *r = (color >> 16) & mask;
        *g = (color >>  8) & mask;
        *b = color & mask;
}

static OSD_PIXEL_T DST_ColorCalcuration(OSD_PIXEL_T foreColor, DS_U8 nWeight, OSD_PIXEL_T backColor)
{
        if (nWeight == 0xFF) return foreColor;
        if (nWeight == 0) return backColor;
        if (sizeof(OSD_PIXEL_T) == 1) // 8ºñÆ®ÀÎ °æ¿ì
        {
                if (foreColor == 0) return backColor;
                if (backColor == 0) return foreColor;
                return (nWeight > 128) ? foreColor : backColor;
        }
        if (sizeof(OSD_PIXEL_T) == 2) // 16ºñÆ®ÀÎ °æ¿ì
        {
                if (foreColor == 0)
                {
                        // Àü°æ»öÀÌ Åõ¸íÀÎ °æ¿ì
                        if (backColor == 0) return 0;
                        OSD_PIXEL_T a,r,g,b;
                        DST_GetColor(backColor, &a, &r, &g, &b);
                        a = nWeight * a / 255;
                        return DST_SetColor(a, r, g, b);
                }
                if (backColor == 0)
                {
                        OSD_PIXEL_T a,r,g,b;
                        DST_GetColor(foreColor, &a, &r, &g, &b);
                        a = nWeight/16;
                        return DST_SetColor(a, r, g, b);
                }
                if (foreColor == 0xFFFF && backColor == 0xF000) // °ËÀº¹ÙÅÁ¿¡ Èò±Û¾¾
                {
                        OSD_PIXEL_T nWeight4 = nWeight / 16;
                        return DST_SetColor(0xF, nWeight4, nWeight4, nWeight4);
                }
                OSD_PIXEL_T fa,fr,fg,fb;
                DST_GetColor(foreColor, &fa, &fr, &fg, &fb);
                OSD_PIXEL_T ba,br,bg,bb;
                DST_GetColor(backColor, &ba, &br, &bg, &bb);

                OSD_PIXEL_T max = 0xFF;
                //OSD_PIXEL_T a = ba + (fa*(max-(ba*nWeight)/max))/max;
                OSD_PIXEL_T a = ((nWeight*fa) + (max-nWeight)*ba)/max;
                OSD_PIXEL_T r = ((nWeight*fr) + (max-nWeight)*br)/max;
                OSD_PIXEL_T g = ((nWeight*fg) + (max-nWeight)*bg)/max;
                OSD_PIXEL_T b = ((nWeight*fb) + (max-nWeight)*bb)/max;
                return DST_SetColor(a,r,g,b);
        }
        // 32ºñÆ®ÀÎ °æ¿ì
        if (foreColor == 0)
        {
                // Àü°æ»öÀÌ Åõ¸íÀÎ °æ¿ì
                if (backColor == 0) return 0;
                OSD_PIXEL_T a,r,g,b;
                DST_GetColor(backColor, &a, &r, &g, &b);
                a = nWeight * a / 255;
                return DST_SetColor(a, r, g, b);
        }
        if (backColor == 0)
        {
                OSD_PIXEL_T a,r,g,b;
                DST_GetColor(foreColor, &a, &r, &g, &b);
                a = nWeight;
                return DST_SetColor(a, r, g, b);
        }
        if (foreColor == CONV32_16(0xFFFFFFFF) && backColor == CONV32_16(0xFF000000)) // °ËÀº¹ÙÅÁ¿¡ Èò±Û¾¾
        {
                return DST_SetColor(0xFF, nWeight, nWeight, nWeight);
        }
        OSD_PIXEL_T fa,fr,fg,fb;
        DST_GetColor(foreColor, &fa, &fr, &fg, &fb);
        OSD_PIXEL_T ba,br,bg,bb;
        DST_GetColor(backColor, &ba, &br, &bg, &bb);

        OSD_PIXEL_T max = 0xFF;
        //OSD_PIXEL_T a = ba + (fa*(max-(ba*nWeight)/max))/max;
        OSD_PIXEL_T a = ((nWeight*fa) + (max-nWeight)*ba)/max;
        OSD_PIXEL_T r = ((nWeight*fr) + (max-nWeight)*br)/max;
        OSD_PIXEL_T g = ((nWeight*fg) + (max-nWeight)*bg)/max;
        OSD_PIXEL_T b = ((nWeight*fb) + (max-nWeight)*bb)/max;
        return DST_SetColor(a,r,g,b);
}

//°¡ÁßÄ¡ °ª°ú »öÀ» ÀúÁ¤Çϱâ À§ÇÑ ¹öÆÛ °è»êÀ» À§ÇÑ ÇÔ¼ö
// Edge µîÀÇ ¿¬»ê¿¡¼­´Â °¡ÁßÄ¡ °ªÀ» ´õÇϱ⠿¬»êÇÏ¿©¾ß ÇÑ´Ù.
// ±ÛÀÚ¸¦ ±×¸®´Â ¼ø¼­´Â ´ÙÀ½°ú °°´Ù.
// ¹è°æ ±×¸®±â
// ¿¡Áö¹öÆÛ ±¸Çϱâ (°¡ÁßÄ¡+»ö)
// ±ÛÀÚ¹öÆÛ ±¸Çϱâ (°¡ÁßÄ¡+»ö)
// ¹è°æ¿¡ ¿¡Áö¹öÆÛ ´õÇϱâ
// ¹è°æ¿¡ ¿¡Áö¹öÆÛ ´õÇÑ ¹öÆÛ¿¡ ±ÛÀÚ¹öÆÛ ´õÇϱâ
static void DST_PrintBuff(int des_w,  int des_h, DS_U8* desWeight, OSD_PIXEL_T* desColor,
                int src_w, int src_h, DS_U8* src, int x_pos, int y_pos, OSD_PIXEL_T color)
{
        if (des_w < 1 || des_h < 1)
        {
                return;
        }
        if (src_w < 1 || src_h < 1)
        {
                return;
        }
        if (src_w > des_w)
        {
                return;
        }
        if (src_h > des_h)
        {
                return;
        }
        if (x_pos < 0)
        {
                x_pos = 0;
        }
        if (y_pos < 0)
        {
                y_pos = 0;
        }
        if (x_pos + src_w > des_w)
        {
                x_pos = des_w - src_w;
        }
        if (y_pos + src_h > des_h)
        {
                y_pos = des_h - src_h;
        }
                
        int x = 0, y = 0;
        DS_U8 *src1 = src;
        for (y = 0; y < src_h; y++)
        {
                DS_U8 *desWeight1 = desWeight + des_w * (y_pos+y) + x_pos;
                OSD_PIXEL_T *desColor1 = desColor + des_w * (y_pos+y) + x_pos;
                for (x = 0; x < src_w; x++)
                {
                        if (*desWeight1)
                        {
                                *desWeight1 = (*desWeight1 > *src1) ? *desWeight1 : *src1;
                        }
                        else
                        {
                                *desWeight1 = *src1;
                        }
                        if (*src1 > 0) *desColor1 = color;
                        src1++;
                        desWeight1++;
                        desColor1++;
                }
        }
}

typedef struct 
{
        FONT_CC data[64];
        int nCount;
        OSD_PIXEL_T buff[720*48];
} FontImageCache;

#define MAX_FONT_IMAGE_CACHE 10
static FontImageCache fontimagecache[MAX_FONT_IMAGE_CACHE];
static int g_FontImageCacheWritePosition = 0;

static bool DST_GetFontImageCache(FONT_CC data[], int nCount, OSD_PIXEL_T *buff, int width, int height)
{
        int i;
        for ( i = 0; i < MAX_FONT_IMAGE_CACHE; i++)
        {
                if (nCount != fontimagecache[i].nCount) continue;
                if (memcmp(data, fontimagecache[i].data, nCount * sizeof(FONT_CC)) != 0) continue;
                memcpy(buff, fontimagecache[i].buff, width * height * sizeof(OSD_PIXEL_T));
                return true;
        }
        return false;
}

static void DST_SetFontImageCache(FONT_CC data[], int nCount, OSD_PIXEL_T *buff, int width, int height)
{
//      if (fontimagecache[g_FontImageCacheWritePosition].data) DST_OS_Free(&fontimagecache[g_FontImageCacheWritePosition].data);
//      if (fontimagecache[g_FontImageCacheWritePosition].buff) DST_OS_Free(&fontimagecache[g_FontImageCacheWritePosition].buff);
                
//      fontimagecache[g_FontImageCacheWritePosition].data = (FONT_CC *)DST_OS_Malloc(nCount * sizeof(FONT_CC));
        memcpy(fontimagecache[g_FontImageCacheWritePosition].data, data, nCount * sizeof(FONT_CC));
        fontimagecache[g_FontImageCacheWritePosition].nCount = nCount;
//      fontimagecache[g_FontImageCacheWritePosition].buff = (OSD_PIXEL_T *)DST_OS_Malloc(width * height * sizeof(OSD_PIXEL_T));
        memcpy(fontimagecache[g_FontImageCacheWritePosition].buff, buff, width * height * sizeof(OSD_PIXEL_T));
        
        g_FontImageCacheWritePosition++;
        if (g_FontImageCacheWritePosition >= MAX_FONT_IMAGE_CACHE) g_FontImageCacheWritePosition = 0;
}

// ÆùÆ®ÀÇ À̹ÌÁö¸¦ ±¸ÇÑ´Ù.
void DST_GetFontImageCC(FONT_CC data[], int nCount, OSD_PIXEL_T *buff)
{
        int x = 0, y = 0, i = 0, j = 0, x_pos = 0;
        if (nCount == 0) return;
        int width = DST_GetFontWidthCC(data, nCount);
        int height = DST_GetFontHeightCC(data, nCount);
        if (width < 1 || height < 1) return;
        
        if (DST_GetFontImageCache(data, nCount, buff, width, height) == true) return;
        // mallocÀ» ¸¹ÀÌ ÇÏ´Â ¹æ½ÄÀº ºÒ¾ÈÁ¤ÇϹǷΠ
        // ÀÌÀü Å©±âº¸´Ù Ä¿Áø °æ¿ì¿¡¸¸ mallocÀ» Çϵµ·Ï ÇÑ´Ù.
        static int nBuffSize = 0;
        static DS_U8 *buff_char = 0; // °¡ÁßÄ¡ °ª ¹öÆÛ
        static DS_U8 *buff_edge = 0;
        static OSD_PIXEL_T *buff_char_color = 0; // »ö ¹öÆÛ
        static OSD_PIXEL_T *buff_edge_color = 0;
        if (width * height > nBuffSize)
        {
                nBuffSize = width * height;
                DST_OS_Free(&buff_char);
                DST_OS_Free(&buff_edge);
                DST_OS_Free(&buff_char_color);
                DST_OS_Free(&buff_edge_color);
                buff_char = (DS_U8*)DST_OS_Malloc(nBuffSize);
                buff_edge = (DS_U8*)DST_OS_Malloc(nBuffSize);
                buff_char_color = (OSD_PIXEL_T*)DST_OS_Malloc(sizeof(OSD_PIXEL_T) * nBuffSize);
                buff_edge_color = (OSD_PIXEL_T*)DST_OS_Malloc(sizeof(OSD_PIXEL_T) * nBuffSize);
        }
        
        memset(buff_char, 0, nBuffSize);
        memset(buff_edge, 0, nBuffSize);
        memset(buff_char_color, 0, nBuffSize*sizeof(OSD_PIXEL_T));
        memset(buff_edge_color, 0, nBuffSize*sizeof(OSD_PIXEL_T));
        
        // ±âÁؼ±ÀÇ À§Ä¡¸¦ Àâ´Â´Ù.
        int nMaxBaseLine = DST_GetFontBaseLine(DST_GetMaxFontSize(data, nCount));
        
        for (i = 0; i < nCount; i++)
        {
                //int nPos = DST_GetFontArib(data[i].nCode, data[i].nSize, data[i].nStyle,data[i].nOffset,data[i].bItalic);
                int nPos = DST_GetFont(data[i].nCode, data[i].nSize, data[i].nStyle,data[i].nOffset,data[i].bItalic);
                int nEdgeWidth = DST_GetFontEdgeWidth(data[i].nSize);
                if (i==0)
                {
                        // ù¹ø° ±ÛÀÚÀÇ ¿ÞÂÊ »ßÁ®³²¿È Á¤µµ + Edge + margin
                        if (fontCache[nPos].x < 0) x_pos -= fontCache[nPos].x;
                        x_pos += (nEdgeWidth*2);
                        DST_DrawBox(width, height, buff, 0, 0, x_pos + fontCache[nPos].width, height, data[i].BackColor);
                }
//              else // ±ÛÀÚ°¡ 1°³ÀÎ °æ¿ì µÞºÎºÐ¿¡ ¾²·¹±â °ªÀÌ ³²´Â ¹®Á¦·Î Á¦°Å
                {
                        if (i== nCount -1)
                        {
                                DST_DrawBox(width, height, buff, x_pos, 0, width - x_pos, height, data[i].BackColor);
                        }
                        else
                        {
                                DST_DrawBox(width, height, buff, x_pos, 0, fontCache[nPos].width, height, data[i].BackColor);
                        }
                }
                int nBaseX = x_pos + fontCache[nPos].x;
                int nBaseY = nMaxBaseLine - fontCache[nPos].y;
                if (nBaseX + fontCache[nPos].w > width)
                {
                        nBaseX = width -  fontCache[nPos].w;
                }
                if (nBaseY + fontCache[nPos].h > height)
                {
                        nBaseY = height -  fontCache[nPos].h;
                        if (nBaseY < 0)
                        {
                                 fontCache[nPos].h = height;
                                 nBaseY = 0;
                        }
                }
                // ÆùÆ® ±×¸®±â    
                DST_PrintBuff(width, height, buff_char, buff_char_color,
                fontCache[nPos].w, fontCache[nPos].h, fontCache[nPos].buff,
                nBaseX, nBaseY, data[i].Color);
                // UnderLine Drawing
                if (data[i].bUnderLine)
                {
                        int nUnderLineHeight = (nEdgeWidth * 70) / 100;
                        if (nUnderLineHeight < 1) nUnderLineHeight =1;
                        for (y = 0; y < nUnderLineHeight; y++)
                        {
                                for (x = 0; x < fontCache[nPos].width; x++)
                                {
                                        buff_edge[x_pos + width * (nMaxBaseLine + y+1)+x] = 200;
                                        buff_edge_color[x_pos + width * (nMaxBaseLine + y+1)+x] = data[i].Color;
                                }
                        }
                }
                // Edge ±×¸®±â
                switch (data[i].nEdgeType)
                {
                        case 1:
                                for (j = 1; j <= nEdgeWidth; j++)
                                {
                                    DST_PrintBuff(width, height,buff_edge, buff_edge_color,
                                        fontCache[nPos].w, fontCache[nPos].h, fontCache[nPos].buff,
                                        nBaseX - j, nBaseY - j, data[i].EdgeColor);
                                }
                                break;
                        
                        case 2:
                                for (j = 1; j <= nEdgeWidth; j++)
                                {
                                    DST_PrintBuff(width, height, buff_edge,  buff_edge_color,
                                        fontCache[nPos].w, fontCache[nPos].h, fontCache[nPos].buff,
                                        nBaseX + j, nBaseY + j , data[i].EdgeColor);
                                }
                                break;
                        
                        case 3:
                                for (y = nEdgeWidth * -1; y <= nEdgeWidth; y++)
                                {
                                    for (x = nEdgeWidth * -1 ; x <= nEdgeWidth; x++)
                                    {
                                        DST_PrintBuff(width, height, buff_edge,  buff_edge_color,
                                            fontCache[nPos].w, fontCache[nPos].h, fontCache[nPos].buff,
                                            nBaseX + x, nBaseY + y , data[i].EdgeColor);
                                    }
                                }
                                break;
                        
                        case 4:
                                DST_PrintBuff(width, height, buff_edge,  buff_edge_color,
                                      fontCache[nPos].w, fontCache[nPos].h, fontCache[nPos].buff,
                                      nBaseX - nEdgeWidth, nBaseY + nEdgeWidth, data[i].EdgeColor);
                                break;
                        
                        case 5:
                                DST_PrintBuff(width, height, buff_edge,  buff_edge_color,
                                      fontCache[nPos].w, fontCache[nPos].h, fontCache[nPos].buff,
                                      nBaseX + nEdgeWidth, nBaseY + nEdgeWidth , data[i].EdgeColor);
                                break;
                }
                x_pos += fontCache[nPos].width;
        }
        // Edge ¹öÆÛ¿Í char ¹öÆÛ¸¦ º¹»çÇÑ´Ù.
        for (i=0; i < nBuffSize; i++)
        {
                // Edge ¹öÆÛ Àû¿ë
                if (buff_edge[i] > 0)
                {
                        buff[i] = DST_ColorCalcuration(buff_edge_color[i], buff_edge[i], buff[i]);
                }
                // Char ¹öÆÛ Àû¿ë
                if (buff_char[i] > 0)
                {
                        DS_U16 emphasis = (buff_char[i] * 150) / 100;
                        if (emphasis > 255) emphasis = 255;
                        buff[i] = DST_ColorCalcuration(buff_char_color[i], emphasis, buff[i]);
                }
        }
        DST_SetFontImageCache(data, nCount, buff, width, height);
}

// OSD¿ë ÆùÆ®¿£Áø

// ÅؽºÆ®ÀÇ ³ôÀ̸¦ ±¸ÇÑ´Ù.
int DST_GetTextHeight(DS_U8 nSize)
{
        return DST_GetFontHeight(nSize);
}

// ÁöÁ¤ÇÑ ¹öÆÛ¿¡ ÆùÆ®¸¦ Ãâ·ÂÇÑ´Ù.
bool DST_PrintText(
        OSD_PIXEL_T *buffDes, int buffer_width, int buffer_height,
        int x_pos, int y_pos,
        DS_U32* strText, int nStrLen,  DS_U8 nSize, OSD_PIXEL_T Color)
{
        if (nStrLen < 1) return false;
        int width = DST_GetTextWidth32(strText, nStrLen, nSize);
  int height = DST_GetTextHeight(nSize);
  if (width < 1 || height < 1) return false;
  // 8ºñÆ® Gray ¹öÆÛ
  static int nBuffSize = 0;
  static DS_U8 *buff = 0;
  if (width * height > nBuffSize) // ÀÔ·ÂµÈ ÃÖ´ë »çÀÌÁî·Î ¸Þ¸ð¸® ¹öÆÛ¸¦ °»½ÅÇؼ­ ¸¸µç´Ù.
  {
        nBuffSize = width * height;
        DST_OS_Free(&buff);
        buff = (DS_U8 *)DST_OS_Malloc(nBuffSize);
        }
        memset(buff, 0, width * height);

  int nMaxBaseLine = DST_GetFontBaseLine(nSize); // ±âÁؼ±ÀÇ À§Ä¡¸¦ Àâ´Â´Ù.
  int nEdgeWidth = DST_GetFontEdgeWidth(nSize);

        int x_posi = 0;
        int i;
  for ( i = 0; i < nStrLen; i++)
  {
    int nPos = DST_GetFont(strText[i], nSize, 0, 0, false);
    if (i==0)
    {
            // ù¹ø° ±ÛÀÚÀÇ ¿ÞÂÊ »ßÁ®³²¿È Á¤µµ + Edge + margin
            if (fontCache[nPos].x < 0) x_posi -= fontCache[nPos].x;
            x_posi += (nEdgeWidth*2);
    }
    int nBaseX = x_posi + fontCache[nPos].x;
                int nBaseY = nMaxBaseLine - fontCache[nPos].y;
                DS_U8 *src1 = fontCache[nPos].buff;
                int y;
                for ( y = 0; y < fontCache[nPos].h; y++)
                {
                        DS_U8 *des1 = buff + width * (nBaseY+y) + nBaseX;
                        int x;
                        for ( x = 0; x < fontCache[nPos].w; x++)
                        {
                                if (*src1) *des1 = *src1;
                                src1++;
                                des1++;
                        }
                }
    x_posi += fontCache[nPos].width;
  }
  DS_U8 *p = buff;
  int y;
  for ( y=0; y < height; y++)
  {
        OSD_PIXEL_T *des1 = buffDes + (y_pos+y)*buffer_width + x_pos;
        int x;
        for ( x=0; x < width; x++)
        {
                if (*p) *des1 = DST_ColorCalcuration(Color, *p, *des1);
                p++;
                        des1++;
        }
        }
        return true;
}


// À¯´ÏÄÚµå ÅؽºÆ® ÆøÀ» ±¸ÇÑ´Ù.
int DST_GetTextWidth32(DS_U32* strText, DS_U16 nStrLen, DS_U8 nSize)
{
        if (strText == 0) return 0;
        int nTotalWidth = 0;
        int nMaxWidth = 0;
        
        if (nStrLen < 1) return 0;
        if (nStrLen > 4096) nStrLen = 4096;
        int i; 
        for ( i = 0; i < nStrLen; i++)
        {
                if (strText[i] != 0) continue;
                nStrLen = i;
                break;
        }

        for (i = 0; i < nStrLen; i++)
        {
    int nPos = DST_GetFont(strText[i], nSize, 0, 0, false);
    if (i==0) // ù¹ø° ±ÛÀÚÀÇ ¿ÞÂÊ »ßÁ®³²¿È Á¤µµ + Edge + margin
    {
      if (fontCache[nPos].x < 0) nTotalWidth -= fontCache[nPos].x;
      nTotalWidth += (DST_GetFontEdgeWidth(nSize) * 2);
    }
    nTotalWidth = nTotalWidth + fontCache[nPos].width;
    // µ¥ÀÌÅÍÀÇ widthº¸´Ù ±×·ÁÁ®¾ßÇÏ´Â ÆùÆ®°¡ ¿À¸¥ÂÊÀ¸·Î ´õ »ßÁ®³ª¿Â´Ù¸é
    // ÀÌ°ÍÀ» ¸Æ½º·Î ÇؾßÇÑ´Ù. [hand.] µîÀÇ ¹®ÀÚ´Â
    // Çʱâü ÀÌÅŸ¯ÀÎ °æ¿ì dÀÇ ¿À¸¥ÂÊ ³¡ÀÌ '.' º¸´Ù ¹Û¿¡ ÀÖ´Â °æ¿ì¸¦ °í·ÁÇØ¾ß ÇÑ´Ù.
    int nDelta = fontCache[nPos].x + fontCache[nPos].w - fontCache[nPos].width;
    if (nDelta < 0) nDelta = 0;
    if (nTotalWidth + nDelta > nMaxWidth) nMaxWidth = nTotalWidth + nDelta;
    // ¸¶Áö¸· ±ÛÀÚÀÇ ¿§Áö Å©±â¸¸Å­ ¸¶Áø Àû¿ë
        if (i == nStrLen -1)  nMaxWidth += (DST_GetFontEdgeWidth(nSize) * 2);
        }
        return nMaxWidth;
}

int DST_GetTextWidthUniwithLen(DS_U16* strText, DS_U16 nStrLen, DS_U8 nSize)
{
        if (nStrLen == 0) return 0; // ¹®ÀÚ¿­ÀÇ ±æÀÌ°¡ 0À̸é 0ÀÌ´Ù.
        if (nStrLen >= 4096) return 0;
        static DS_U32 strText32[4096];
        memset(strText32 ,0, 4096 * sizeof(DS_U32));
        int i;
        for ( i = 0; i < nStrLen; i++) strText32[i] = (DS_U32)strText[i];
        int ret = DST_GetTextWidth32(strText32, nStrLen, nSize);
        //DST_OS_Free(&strText32);
        return ret;
}

int DST_GetTextWidthUni(DS_U16* strText, DS_U8 nSize)
{
        int i;
        for ( i = 0; i < 4096; i++)
        {
                if (strText[i] == 0) return DST_GetTextWidthUniwithLen(strText, i, nSize);
        }
        return 0;
}

// À¯´ÏÄÚµå ¹®ÀÚ¿­ Áß ÁöÁ¤ÇÑ ºÎºÐÀÇ ÅؽºÆ® ÆøÀ» ±¸ÇÑ´Ù.
int DST_GetTextWidthExtUni(int start, int width, DS_U16* strText, DS_U16 nStrLen, DS_U8 nSize)
{
        return DST_GetTextWidthUniwithLen(strText + start, width, nSize);
}

// ±×·ÁÁú ÅؽºÆ®ÀÇ ÆøÀ» ±¸ÇÑ´Ù. ÇÑ±Û ¸Þ´º¿¡¼­µµ È£ÃâÇÒ¼ö ÀÖ´Ù.
int DST_GetTextWidth(char* strText, DS_U8 nSize)
{
        DS_U16 nStrLen = strlen(strText);
        if (nStrLen == 0) return 0; // ¹®ÀÚ¿­ÀÇ ±æÀÌ°¡ 0À̸é 0ÀÌ´Ù.
        if (nStrLen >= 4096) return 0; // ¹®ÀÚ¿­ÀÇ ±æÀÌ°¡ 0À̸é 0ÀÌ´Ù.
        static DS_U16 strText16[4096];
        memset(strText16, 0, 4096*sizeof(DS_U16));
        int i;
        for ( i = 0; i < nStrLen; i++) strText16[i] = (DS_U16)(DS_U8)strText[i];
        int ret = DST_GetTextWidthUniwithLen(strText16, nStrLen, nSize);
        return ret;
}

DS_U32* DST_UTF82Uni(DS_U8 *utf)
{
        if (utf == 0) return 0;
        int nLen = strlen((char*)utf);
        if (nLen == 0) return 0;
        //printf("nLen=%d\n", nLen);
        static DS_U32 buff[4096];
        memset(buff, 0, 4096*sizeof(DS_U32));
        int nPos = 0;
        int i;
        for ( i = 0; i < nLen; i++)
        {
                if (utf[i] >= 0xF0)
                { // 11110zzz 10zzxxxx 10xxxxxx 10xxxxxx
                        buff[nPos] = ((utf[i] & 0x07) << 18) + ((utf[i+1] & 0x3F) << 16) + ((utf[i+2] & 0x3F) << 8) + (utf[i+3] & 0x3F);
                        nPos++;
                        i+=3;
                        continue;
                }
                if (utf[i] >= 0xE0)
                { // 1110xxxx 10xxxxxx 10xxxxxx
                        buff[nPos] = ((utf[i] & 0x0F) << 12) + ((utf[i+1] & 0x3F) << 6) + (utf[i+2] & 0x3F);
                        nPos++;
                        i+=2;
                        continue;
                }
                if (utf[i] >= 0xC0)
                { // 110xxxxx 10xxxxxx
                        buff[nPos] = ((utf[i] & 0x1F) << 6) + (utf[i+1] & 0x3F);
                        nPos++;
                        i++;
                        continue;
                }
                if (utf[i] < 0x80)
                { // 0xxxxxxx
                        buff[nPos] = utf[i];
                        nPos++;
                        continue;
                }
        }
        return buff;
}