add oversampler

oversampling/WDL/wingui/membitmap.h

@@ -0,0 +1,94 @@
+/* 
+    WDL - membitmap.h
+    Copyright (C) 2005 and later Cockos Incorporated
+
+    This software is provided 'as-is', without any express or implied
+    warranty.  In no event will the authors be held liable for any damages
+    arising from the use of this software.
+
+    Permission is granted to anyone to use this software for any purpose,
+    including commercial applications, and to alter it and redistribute it
+    freely, subject to the following restrictions:
+
+    1. The origin of this software must not be misrepresented; you must not
+       claim that you wrote the original software. If you use this software
+       in a product, an acknowledgment in the product documentation would be
+       appreciated but is not required.
+    2. Altered source versions must be plainly marked as such, and must not be
+       misrepresented as being the original software.
+    3. This notice may not be removed or altered from any source distribution.
+
+
+  This file provides a wrapper around the win32 bitmaps, to allow the callee to easily
+  manage a framebuffer. It's mostly deprecated by LICE/, however.
+
+  */
+
+
+
+#ifndef _WDL_WINMEMBITMAP_H_
+#define _WDL_WINMEMBITMAP_H_
+
+#ifndef _WIN32
+#include "../swell/swell.h"
+#endif
+
+class WDL_WinMemBitmap
+{
+public:
+  WDL_WinMemBitmap() 
+  { 
+    m_w=m_h=-100; 
+    m_hdc=0;
+#ifdef _WIN32
+    m_bm=0; m_oldbm=0;
+#endif
+  }
+  ~WDL_WinMemBitmap()
+  {
+#ifdef _WIN32
+    if (m_oldbm) SelectObject(m_hdc,m_oldbm);
+    if (m_bm) DeleteObject(m_bm);
+      
+    if (m_hdc) DeleteDC(m_hdc);
+#else
+    if (m_hdc) SWELL_DeleteGfxContext(m_hdc);
+#endif
+  }
+
+  int DoSize(HDC compatDC, int w, int h) // returns 1 if it was resized
+  {
+    if (m_w == w && m_h == h && m_hdc 
+#ifdef _WIN32
+        && m_bm
+#endif
+        ) return 0;
+    
+#ifdef _WIN32
+    if (!m_hdc) m_hdc=CreateCompatibleDC(compatDC);
+    if (m_oldbm) SelectObject(m_hdc,m_oldbm);
+    if (m_bm) DeleteObject(m_bm);
+    m_bm=CreateCompatibleBitmap(compatDC,m_w=w,m_h=h);
+    m_oldbm=SelectObject(m_hdc,m_bm);
+#else
+    if (m_hdc) SWELL_DeleteGfxContext(m_hdc);
+    m_hdc=SWELL_CreateMemContext(compatDC,m_w=w,m_h=h);
+#endif
+    return 1;
+  }
+  int GetW() { return m_w; }
+  int GetH() { return m_h; }
+  HDC GetDC() { return m_hdc; }
+
+private:
+
+  HDC m_hdc;
+#ifdef _WIN32
+  HBITMAP m_bm;
+  HGDIOBJ m_oldbm;
+#endif
+  int m_w,m_h;
+};
+
+
+#endif