Initial community commit

Src/libvpShared/corelibs/cdxv/vp50/xprintf/xprintf.cpp

@@ -0,0 +1,169 @@
+//____________________________________________________________________________
+//
+//  File:  xprintf.cpp
+//
+//  Description:  Display a printf style message on the current video frame
+//
+//  Author:  Keith Looney
+//
+//____________________________________________________________________________
+//  Revision History
+//
+
+//____________________________________________________________________________
+//  Includes
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <windows.h>
+ 
+#include "xprintf.h"
+ 
+//________ ____________________________________________________________________
+//  Defines
+
+//____________________________________________________________________________
+//  Declarations
+
+//____________________________________________________________________________
+//  Definitions
+
+/****************************************************************************
+ *
+ *  Function    :  xprintf
+ *
+ *  Description :  Display a printf style message on the current video frame
+ *
+ *  INPUTS      :
+ *
+ *  OUTPUTS     :
+ *
+ *  RETURNS     :  void
+ *
+ *  Notes       :
+ *
+ *  ERRORS      :
+ *
+ ****************************************************************************/
+
+int vp5_xprintf(const PB_INSTANCE* ppbi, long nPixel, const char* format, ...)
+{
+	HFONT hfont,hfonto;
+    va_list arglist;
+    char szFormatted[256] = "";
+    UINT8* pDest = &ppbi->PostProcessBuffer[nPixel];
+    long nSizeY = ppbi->HFragments * 8;
+    long nStride = ppbi->Configuration.YStride;
+    BOOL bRC;
+    int rc = 0;
+
+    //  Format text
+
+    va_start(arglist, format);
+    _vsnprintf(szFormatted, sizeof(szFormatted), format, arglist);
+    va_end(arglist);
+
+    //  Set up temporary bitmap
+
+    HDC hdcMemory = NULL;
+    HBITMAP hbmTemp = NULL;
+    HBITMAP hbmOrig = NULL;
+
+    RECT rect;
+    rect.left = 0;
+    rect.top = 0;
+    rect.right = 8 * strlen(szFormatted);
+    rect.bottom = 8;
+
+    hdcMemory = CreateCompatibleDC(NULL);
+    if (hdcMemory == NULL)
+    {
+        goto Exit;
+    }
+
+    hbmTemp = CreateBitmap(rect.right, rect.bottom, 1, 1, NULL);
+    if (hbmTemp == NULL)
+    {
+        goto Exit;
+    }
+    hbmOrig = static_cast<HBITMAP>(SelectObject(hdcMemory, hbmTemp));
+    if(!hbmOrig)
+    {
+        goto Exit;
+    }
+
+    //  Write text into bitmap
+    //  font?
+	hfont = CreateFont(8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,VARIABLE_PITCH | FF_SWISS, ""); 
+	if(hfont == NULL)
+	{
+		goto Exit;
+	}
+    hfonto = static_cast<HFONT>(SelectObject(hdcMemory, hbmTemp));
+	if(!hfonto)
+	{
+		goto Exit;
+	}
+
+	SelectObject (hdcMemory, hfont);             
+    SetTextColor(hdcMemory, 1);
+    SetBkColor(hdcMemory, 0);
+    SetBkMode(hdcMemory, TRANSPARENT);
+
+    bRC = BitBlt(hdcMemory, rect.left, rect.top, rect.right, rect.bottom, hdcMemory, rect.left, rect.top, BLACKNESS);
+    if (!bRC)
+    {
+        goto Exit;
+    }
+
+    bRC = ExtTextOut(hdcMemory, 0, 0, ETO_CLIPPED, &rect, szFormatted, strlen(szFormatted), NULL);
+    if (!bRC)
+    {
+        goto Exit;
+    }
+
+    //  Copy bitmap to video frame
+
+    long x;
+    long y;
+
+    for (y = rect.top; y < rect.bottom; ++y)
+    {
+        for (x = rect.left; x < rect.right; ++x)
+        {
+            if (GetPixel(hdcMemory, x, rect.bottom - 1 - y))
+            {
+                pDest[x] = 255;
+            }
+        }
+        pDest += nStride;
+    }
+
+    rc = strlen(szFormatted);
+
+Exit:
+    if (hbmTemp != NULL)
+    {
+        if (hbmOrig != NULL)
+        {
+            SelectObject(hdcMemory, hbmOrig);
+        }
+        DeleteObject(hbmTemp);
+    }
+    if (hfont != NULL)
+    {
+        if (hfonto!= NULL)
+        {
+            SelectObject(hdcMemory, hfonto);
+        }
+        DeleteObject(hfont);
+    }
+
+    if (hdcMemory != NULL)
+    {
+        DeleteDC(hdcMemory);
+    }
+    hdcMemory = 0;
+
+    return rc;
+}