displaywin.cpp

这是在PCA下的基于IPP库示例代码例子,在网上下了IPP的库之后,设置相关参数就可以编译该代码.

/* ////////////////////////////////////////////////////////////////////////
//
//                  INTEL CORPORATION PROPRIETARY INFORMATION
//     This software is supplied under the terms of a license agreement or
//     nondisclosure agreement with Intel Corporation and may not be copied
//     or disclosed except in accordance with the terms of that agreement.
//          Copyright(c) 2002-2005 Intel Corporation. All Rights Reserved.
//
//
//
*/

#if defined SYSWIN32 || defined SYSWIN64

#ifndef SYSWIN32
 #define WIN32
#endif

#ifdef SYSWIN64
 #define WIN64
#endif


#include <windows.h>
#include <vfw.h>

typedef struct
{
    HWND hWnd;
    WNDCLASS wc;
    HDRAWDIB hDrawDib;
    BITMAPINFOHEADER biHeader;
    unsigned char *dibBuf;
    int width;
    int height;
} DIB_WINDOW;

DIB_WINDOW dibWindow;

LRESULT CALLBACK MainWndProc(HWND, UINT, WPARAM, LPARAM);

int DisplayPixMap( unsigned char *pixMap,
                   const int      width,
                   const int      height,
                   const char    *jp2FileName )
{
    HINSTANCE hInstance = GetModuleHandle(NULL);
    MSG msg;
    char lpClassName[] = "JPEG2000Viewer";
    char lpWindowName[300] = "JPEG2000Viewer - ";
    strcat(lpWindowName, jp2FileName);

    dibWindow.wc.style = CS_HREDRAW | CS_VREDRAW;
    dibWindow.wc.lpfnWndProc = MainWndProc;
    dibWindow.wc.cbClsExtra = 0;
    dibWindow.wc.cbWndExtra = 0;
    dibWindow.wc.hInstance = hInstance;
    dibWindow.wc.hIcon = ExtractIcon(hInstance, "../../res/J2kit.ico", 0);
    dibWindow.wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    dibWindow.wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
    dibWindow.wc.lpszMenuName = NULL;
    dibWindow.wc.lpszClassName = lpClassName;
    dibWindow.dibBuf = pixMap;
    dibWindow.width = width;
    dibWindow.height = height;
    dibWindow.biHeader.biWidth = dibWindow.width;
    dibWindow.biHeader.biHeight = dibWindow.height;
    dibWindow.biHeader.biSize = sizeof(BITMAPINFOHEADER);
    dibWindow.biHeader.biCompression = BI_RGB;
    dibWindow.biHeader.biPlanes = 1;
    dibWindow.biHeader.biBitCount = 24;

    if(!RegisterClass(&dibWindow.wc))
        return 1;

    dibWindow.hWnd = CreateWindow(
        lpClassName,
        lpWindowName,
        WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_SYSMENU,
        0,
        0,
        100,
        100,
        NULL,
        NULL,
        hInstance,
        NULL);

    if(!dibWindow.hWnd)
        return 1;

    RECT clientRect, windowRect;
    GetWindowRect(dibWindow.hWnd, &windowRect);
    GetClientRect(dibWindow.hWnd, &clientRect);
    MoveWindow(dibWindow.hWnd, windowRect.left, windowRect.top,
        dibWindow.width + windowRect.right - clientRect.right,
        dibWindow.height + windowRect.bottom - clientRect.bottom,
        true);

    ShowWindow(dibWindow.hWnd, SW_SHOWNORMAL);
    UpdateWindow(dibWindow.hWnd);

    while(GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        if(DispatchMessage(&msg))
            return 1;
    }

    return 0;
}

LRESULT CALLBACK MainWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    HDC hDC;

    switch(message)
    {
    case WM_CREATE:
        hDC = GetDC(hWnd);
        if(!hDC)
            return 1;

        dibWindow.hDrawDib = DrawDibOpen();
        if(!dibWindow.hDrawDib)
            return 1;

        DrawDibBegin(dibWindow.hDrawDib,
            hDC,
            dibWindow.width,
            dibWindow.height,
            &dibWindow.biHeader,
            dibWindow.width,
            dibWindow.height,
            0);

        ReleaseDC(hWnd, hDC);
        break;
    case WM_PAINT:
        hDC = GetDC(hWnd);
        if(!hDC)
            return 1;

        DrawDibDraw(
          dibWindow.hDrawDib,
          hDC,
          0,
          0,
          dibWindow.width,
          dibWindow.height,
          &dibWindow.biHeader,
          dibWindow.dibBuf,
          0,
          0,
          dibWindow.width,
          dibWindow.height,
          DDF_SAME_DRAW);

        ReleaseDC(hWnd, hDC);
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }

    return 0;
}

#endif // SYSWIN32 || defined SYSWIN64