dibsection.cpp

通过同步软件来获取移动智能设备屏幕画面

// CDIBSection.cpp : implementation file
//
// General purpose DIB section wrapper class for Win9x, NT 4.0
//
// History :  25 May 1999 - First release
//             4 Jun 1999 - Fixed SetBitmap bug
//             4 May 2000 - 16 or 32 bit compression bug fix (Jim Miller <[e-mail]>)
//            20 Sep 2000 - Bug fix in Save() (saving 4 bytes too many - Tadeusz Dracz)
//                          Allowed lpBits to be NULL in SetBitmap - Don Grasberger
//                          Fixed NumColorEntries bug - Itay Szekely
//                          Fixed buffer overrun bug in Load() - Itay Szekely
//             5 Apr 2000 - Fix for 16/32 bpp bitmaps for PocketPC's (Dan Robbins - DCR)
//
//            12 Nov 2004 - Modified by Dandy Cheung, MFC dependency removed
//             1 Jun 2004 - Updated to Year 2000 version by Dandy Cheung

#include "stdafx.h"
#include "DIBSection.h"

#ifndef ASSERT
#define ASSERT(x)
#endif // ASSERT

#ifndef TRACE
#define TRACE   sizeof
#endif // TRACE

// Standard colors
PALETTEENTRY CDIBSection::ms_StdColors[] =
{
#ifdef USE_HALFTONE_1
    { 0x00, 0x00, 0x00, 0 },    // First 2 will be palette for monochrome bitmaps
    { 0xFF, 0xFF, 0xFF, 0 },

    { 0x00, 0x00, 0xFF, 0 },    // First 16 will be palette for 16 color bitmaps
    { 0x00, 0xFF, 0x00, 0 },
    { 0x00, 0xFF, 0xFF, 0 },
    { 0xFF, 0x00, 0x00, 0 },
    { 0xFF, 0x00, 0xFF, 0 },
    { 0xFF, 0xFF, 0x00, 0 },

    { 0x00, 0x00, 0x80, 0 },
    { 0x00, 0x80, 0x00, 0 },
    { 0x00, 0x80, 0x80, 0 },
    { 0x80, 0x00, 0x00, 0 },
    { 0x80, 0x00, 0x80, 0 },
    { 0x80, 0x80, 0x00, 0 },
    { 0x80, 0x80, 0x80, 0 },

    { 0xC0, 0xC0, 0xC0, 0 },
#else // USE_HALFTONE_1
    { 0x00, 0x00, 0x00, 0 },  // System palette - first 10 colors
    { 0x80, 0x00, 0x00, 0 },
    { 0x00, 0x80, 0x00, 0 },
    { 0x80, 0x80, 0x00, 0 },
    { 0x00, 0x00, 0x80, 0 },
    { 0x80, 0x00, 0x80, 0 },
    { 0x00, 0x80, 0x80, 0 },
    { 0xC0, 0xC0, 0xC0, 0 },
    { 0xC0, 0xDC, 0xC0, 0 },
    { 0xA6, 0xCA, 0xF0, 0 },

    { 0x2C, 0x00, 0x00, 0 },
    { 0x56, 0x00, 0x00, 0 },
    { 0x87, 0x00, 0x00, 0 },
    { 0xC0, 0x00, 0x00, 0 },
    { 0xFF, 0x00, 0x00, 0 },
    { 0x00, 0x2C, 0x00, 0 },
    { 0x2C, 0x2C, 0x00, 0 },
    { 0x56, 0x2C, 0x00, 0 },
    { 0x87, 0x2C, 0x00, 0 },
    { 0xC0, 0x2C, 0x00, 0 },
    { 0xFF, 0x2C, 0x00, 0 },
    { 0x00, 0x56, 0x00, 0 },
    { 0x2C, 0x56, 0x00, 0 },
    { 0x56, 0x56, 0x00, 0 },
    { 0x87, 0x56, 0x00, 0 },
    { 0xC0, 0x56, 0x00, 0 },
    { 0xFF, 0x56, 0x00, 0 },
    { 0x00, 0x87, 0x00, 0 },
    { 0x2C, 0x87, 0x00, 0 },
    { 0x56, 0x87, 0x00, 0 },
    { 0x87, 0x87, 0x00, 0 },
    { 0xC0, 0x87, 0x00, 0 },
    { 0xFF, 0x87, 0x00, 0 },
    { 0x00, 0xC0, 0x00, 0 },
    { 0x2C, 0xC0, 0x00, 0 },
    { 0x56, 0xC0, 0x00, 0 },
    { 0x87, 0xC0, 0x00, 0 },
    { 0xC0, 0xC0, 0x00, 0 },
    { 0xFF, 0xC0, 0x00, 0 },
    { 0x00, 0xFF, 0x00, 0 },
    { 0x2C, 0xFF, 0x00, 0 },
    { 0x56, 0xFF, 0x00, 0 },
    { 0x87, 0xFF, 0x00, 0 },
    { 0xC0, 0xFF, 0x00, 0 },
    { 0xFF, 0xFF, 0x00, 0 },
    { 0x00, 0x00, 0x2C, 0 },
    { 0x2C, 0x00, 0x2C, 0 },
    { 0x56, 0x00, 0x2C, 0 },
    { 0x87, 0x00, 0x2C, 0 },
    { 0xC0, 0x00, 0x2C, 0 },
    { 0xFF, 0x00, 0x2C, 0 },
    { 0x00, 0x2C, 0x2C, 0 },
    { 0x2C, 0x2C, 0x2C, 0 },
    { 0x56, 0x2C, 0x2C, 0 },
    { 0x87, 0x2C, 0x2C, 0 },
    { 0xC0, 0x2C, 0x2C, 0 },
    { 0xFF, 0x2C, 0x2C, 0 },
    { 0x00, 0x56, 0x2C, 0 },
    { 0x2C, 0x56, 0x2C, 0 },
    { 0x56, 0x56, 0x2C, 0 },
    { 0x87, 0x56, 0x2C, 0 },
    { 0xC0, 0x56, 0x2C, 0 },
    { 0xFF, 0x56, 0x2C, 0 },
    { 0x00, 0x87, 0x2C, 0 },
    { 0x2C, 0x87, 0x2C, 0 },
    { 0x56, 0x87, 0x2C, 0 },
    { 0x87, 0x87, 0x2C, 0 },
    { 0xC0, 0x87, 0x2C, 0 },
    { 0xFF, 0x87, 0x2C, 0 },
    { 0x00, 0xC0, 0x2C, 0 },
    { 0x2C, 0xC0, 0x2C, 0 },
    { 0x56, 0xC0, 0x2C, 0 },
    { 0x87, 0xC0, 0x2C, 0 },
    { 0xC0, 0xC0, 0x2C, 0 },
    { 0xFF, 0xC0, 0x2C, 0 },
    { 0x00, 0xFF, 0x2C, 0 },
    { 0x2C, 0xFF, 0x2C, 0 },
    { 0x56, 0xFF, 0x2C, 0 },
    { 0x87, 0xFF, 0x2C, 0 },
    { 0xC0, 0xFF, 0x2C, 0 },
    { 0xFF, 0xFF, 0x2C, 0 },
    { 0x00, 0x00, 0x56, 0 },
    { 0x2C, 0x00, 0x56, 0 },
    { 0x56, 0x00, 0x56, 0 },
    { 0x87, 0x00, 0x56, 0 },
    { 0xC0, 0x00, 0x56, 0 },
    { 0xFF, 0x00, 0x56, 0 },
    { 0x00, 0x2C, 0x56, 0 },
    { 0x2C, 0x2C, 0x56, 0 },
    { 0x56, 0x2C, 0x56, 0 },
    { 0x87, 0x2C, 0x56, 0 },
    { 0xC0, 0x2C, 0x56, 0 },
    { 0xFF, 0x2C, 0x56, 0 },
    { 0x00, 0x56, 0x56, 0 },
    { 0x2C, 0x56, 0x56, 0 },
    { 0x56, 0x56, 0x56, 0 },
    { 0x87, 0x56, 0x56, 0 },
    { 0xC0, 0x56, 0x56, 0 },
    { 0xFF, 0x56, 0x56, 0 },
    { 0x00, 0x87, 0x56, 0 },
    { 0x2C, 0x87, 0x56, 0 },
    { 0x56, 0x87, 0x56, 0 },
    { 0x87, 0x87, 0x56, 0 },
    { 0xC0, 0x87, 0x56, 0 },
    { 0xFF, 0x87, 0x56, 0 },
    { 0x00, 0xC0, 0x56, 0 },
    { 0x2C, 0xC0, 0x56, 0 },
    { 0x56, 0xC0, 0x56, 0 },
    { 0x87, 0xC0, 0x56, 0 },
    { 0xC0, 0xC0, 0x56, 0 },
    { 0xFF, 0xC0, 0x56, 0 },
    { 0x00, 0xFF, 0x56, 0 },
    { 0x2C, 0xFF, 0x56, 0 },
    { 0x56, 0xFF, 0x56, 0 },
    { 0x87, 0xFF, 0x56, 0 },
    { 0xC0, 0xFF, 0x56, 0 },
    { 0xFF, 0xFF, 0x56, 0 },
    { 0x00, 0x00, 0x87, 0 },
    { 0x2C, 0x00, 0x87, 0 },
    { 0x56, 0x00, 0x87, 0 },
    { 0x87, 0x00, 0x87, 0 },
    { 0xC0, 0x00, 0x87, 0 },
    { 0xFF, 0x00, 0x87, 0 },
    { 0x00, 0x2C, 0x87, 0 },
    { 0x2C, 0x2C, 0x87, 0 },
    { 0x56, 0x2C, 0x87, 0 },
    { 0x87, 0x2C, 0x87, 0 },
    { 0xC0, 0x2C, 0x87, 0 },
    { 0xFF, 0x2C, 0x87, 0 },
    { 0x00, 0x56, 0x87, 0 },
    { 0x2C, 0x56, 0x87, 0 },
    { 0x56, 0x56, 0x87, 0 },
    { 0x87, 0x56, 0x87, 0 },
    { 0xC0, 0x56, 0x87, 0 },
    { 0xFF, 0x56, 0x87, 0 },
    { 0x00, 0x87, 0x87, 0 },
    { 0x2C, 0x87, 0x87, 0 },
    { 0x56, 0x87, 0x87, 0 },
    { 0x87, 0x87, 0x87, 0 },
    { 0xC0, 0x87, 0x87, 0 },
    { 0xFF, 0x87, 0x87, 0 },
    { 0x00, 0xC0, 0x87, 0 },
    { 0x2C, 0xC0, 0x87, 0 },
    { 0x56, 0xC0, 0x87, 0 },
    { 0x87, 0xC0, 0x87, 0 },
    { 0xC0, 0xC0, 0x87, 0 },
    { 0xFF, 0xC0, 0x87, 0 },
    { 0x00, 0xFF, 0x87, 0 },
    { 0x2C, 0xFF, 0x87, 0 },
    { 0x56, 0xFF, 0x87, 0 },
    { 0x87, 0xFF, 0x87, 0 },
    { 0xC0, 0xFF, 0x87, 0 },
    { 0xFF, 0xFF, 0x87, 0 },
    { 0x00, 0x00, 0xC0, 0 },
    { 0x2C, 0x00, 0xC0, 0 },
    { 0x56, 0x00, 0xC0, 0 },
    { 0x87, 0x00, 0xC0, 0 },
    { 0xC0, 0x00, 0xC0, 0 },
    { 0xFF, 0x00, 0xC0, 0 },
    { 0x00, 0x2C, 0xC0, 0 },
    { 0x2C, 0x2C, 0xC0, 0 },
    { 0x56, 0x2C, 0xC0, 0 },
    { 0x87, 0x2C, 0xC0, 0 },
    { 0xC0, 0x2C, 0xC0, 0 },
    { 0xFF, 0x2C, 0xC0, 0 },
    { 0x00, 0x56, 0xC0, 0 },
    { 0x2C, 0x56, 0xC0, 0 },
    { 0x56, 0x56, 0xC0, 0 },
    { 0x87, 0x56, 0xC0, 0 },
    { 0xC0, 0x56, 0xC0, 0 },
    { 0xFF, 0x56, 0xC0, 0 },
    { 0x00, 0x87, 0xC0, 0 },
    { 0x2C, 0x87, 0xC0, 0 },
    { 0x56, 0x87, 0xC0, 0 },
    { 0x87, 0x87, 0xC0, 0 },
    { 0xC0, 0x87, 0xC0, 0 },
    { 0xFF, 0x87, 0xC0, 0 },
    { 0x00, 0xC0, 0xC0, 0 },
    { 0x2C, 0xC0, 0xC0, 0 },
    { 0x56, 0xC0, 0xC0, 0 },
    { 0x87, 0xC0, 0xC0, 0 },
    { 0xFF, 0xC0, 0xC0, 0 },
    { 0x00, 0xFF, 0xC0, 0 },
    { 0x2C, 0xFF, 0xC0, 0 },
    { 0x56, 0xFF, 0xC0, 0 },
    { 0x87, 0xFF, 0xC0, 0 },
    { 0xC0, 0xFF, 0xC0, 0 },
    { 0xFF, 0xFF, 0xC0, 0 },
    { 0x00, 0x00, 0xFF, 0 },
    { 0x2C, 0x00, 0xFF, 0 },
    { 0x56, 0x00, 0xFF, 0 },
    { 0x87, 0x00, 0xFF, 0 },
    { 0xC0, 0x00, 0xFF, 0 },
    { 0xFF, 0x00, 0xFF, 0 },
    { 0x00, 0x2C, 0xFF, 0 },
    { 0x2C, 0x2C, 0xFF, 0 },
    { 0x56, 0x2C, 0xFF, 0 },
    { 0x87, 0x2C, 0xFF, 0 },
    { 0xC0, 0x2C, 0xFF, 0 },
    { 0xFF, 0x2C, 0xFF, 0 },
    { 0x00, 0x56, 0xFF, 0 },
    { 0x2C, 0x56, 0xFF, 0 },
    { 0x56, 0x56, 0xFF, 0 },
    { 0x87, 0x56, 0xFF, 0 },
    { 0xC0, 0x56, 0xFF, 0 },
    { 0xFF, 0x56, 0xFF, 0 },
    { 0x00, 0x87, 0xFF, 0 },
    { 0x2C, 0x87, 0xFF, 0 },
    { 0x56, 0x87, 0xFF, 0 },
    { 0x87, 0x87, 0xFF, 0 },
    { 0xC0, 0x87, 0xFF, 0 },
    { 0xFF, 0x87, 0xFF, 0 },
    { 0x00, 0xC0, 0xFF, 0 },
    { 0x2C, 0xC0, 0xFF, 0 },
    { 0x56, 0xC0, 0xFF, 0 },
    { 0x87, 0xC0, 0xFF, 0 },
    { 0xC0, 0xC0, 0xFF, 0 },
    { 0xFF, 0xC0, 0xFF, 0 },
    { 0x2C, 0xFF, 0xFF, 0 },
    { 0x56, 0xFF, 0xFF, 0 },
    { 0x87, 0xFF, 0xFF, 0 },
    { 0xC0, 0xFF, 0xFF, 0 },
    { 0xFF, 0xFF, 0xFF, 0 },
    { 0x11, 0x11, 0x11, 0 },
    { 0x18, 0x18, 0x18, 0 },
    { 0x1E, 0x1E, 0x1E, 0 },
    { 0x25, 0x25, 0x25, 0 },
    { 0x2C, 0x2C, 0x2C, 0 },
    { 0x34, 0x34, 0x34, 0 },
    { 0x3C, 0x3C, 0x3C, 0 },
    { 0x44, 0x44, 0x44, 0 },
    { 0x4D, 0x4D, 0x4D, 0 },
    { 0x56, 0x56, 0x56, 0 },
    { 0x5F, 0x5F, 0x5F, 0 },
    { 0x69, 0x69, 0x69, 0 },
    { 0x72, 0x72, 0x72, 0 },
    { 0x7D, 0x7D, 0x7D, 0 },
    { 0x92, 0x92, 0x92, 0 },
    { 0x9D, 0x9D, 0x9D, 0 },
    { 0xA8, 0xA8, 0xA8, 0 },
    { 0xB4, 0xB4, 0xB4, 0 },
    { 0xCC, 0xCC, 0xCC, 0 },
    { 0xD8, 0xD8, 0xD8, 0 },
    { 0xE5, 0xE5, 0xE5, 0 },
    { 0xF2, 0xF2, 0xF2, 0 },
    { 0xFF, 0xFF, 0xFF, 0 },

    { 0xFF, 0xFB, 0xF0, 0 },  // System palette - last 10 colors
    { 0xA0, 0xA0, 0xA4, 0 },
    { 0x80, 0x80, 0x80, 0 },
    { 0xFF, 0x00, 0x00, 0 },
    { 0x00, 0xFF, 0x00, 0 },
    { 0xFF, 0xFF, 0x00, 0 },
    { 0x00, 0x00, 0xFF, 0 },
    { 0xFF, 0x00, 0xFF, 0 },
    { 0x00, 0xFF, 0xFF, 0 },
    { 0xFF, 0xFF, 0xFF, 0 },
#endif // USE_HALFTONE_1
};

#ifdef _WIN32_WCE
UINT WINAPI GetDIBColorTable(HDC hdc, UINT uStartIndex, UINT cEntries, LPRGBQUAD pColors);
#endif // _WIN32_WCE

/////////////////////////////////////////////////////////////////////////////
// CDIBSection static functions

// Returns the number of color table entries given the number of bits per pixel
// of a bitmap
int CDIBSection::NumColorEntries(int iBitsPerPixel, int iCompression, DWORD biClrUsed) 
{
    int iColors = 0;

    switch(iBitsPerPixel) 
    {
        case 1:  iColors = 2;   break;
#ifdef _WIN32_WCE
        case 2:  iColors = 4;   break;   // Windows CE only       
#endif // _WIN32_WCE
        case 4:  iColors = 16;  break;
        case 8:  iColors = 256; break;
        case 24: iColors = 0;   break; // 16, 24 or 32 bpp have no color table
        case 16:
        case 32:
#ifdef _WIN32_WCE
            // I've found that PocketPCs need this regardless of BI_RGB or BI_BITFIELDS
            iColors = 3;   break;
#else // _WIN32_WCE
            // 16 or 32 bpp have 3 colors(masks) in the color table if bitfield compression
            iColors = (iCompression == BI_BITFIELDS) ? 3 : 0;
#endif // _WIN32_WCE

        default:
           ASSERT(FALSE);
    }

    // If biClrUsed is provided, and it is a legal value, use it
    if(biClrUsed > 0 && biClrUsed <= (DWORD)iColors)
        return biClrUsed;

    return iColors;
}

// Returns the number of storage bytes needed for each scanline in the bitmap
int CDIBSection::BytesPerLine(int iWidth, int iBitsPerPixel)
{
    return ((iWidth * iBitsPerPixel + 31) & (~31)) >> 3;
}

#ifndef DIBSECTION_NO_PALETTE
// Creates a halftone color palette independant of screen color depth. palette
// will be filled with the colors, and nNumColors is the No. of colors to file.
// If nNumColors is 0 or > 256, then 256 colors are used.
HPALETTE CDIBSection::CreateHalftonePalette(int iNumColors)
{
#ifdef USE_HALFTONE_1
    int iNumStandardColors = sizeof(ms_StdColors) / sizeof(ms_StdColors[0]);
    int iIndex = 0;
    int iNumEntries = iNumColors;
    if(iNumEntries <= 0 || iNumEntries > 256)
        iNumEntries = 256;

    PALETTEINFO pi;                   
    pi.palNumEntries = (WORD)iNumEntries;

    // The standard colors (16)
    for(int i=0; i<iNumStandardColors; i++)
    {
        if(iIndex >= iNumEntries)
            break;

        CopyMemory(&pi.palPalEntry[iIndex], &ms_StdColors[i], sizeof(PALETTEENTRY));
        iIndex++;
    }

    // A color cube (6 divisions = 216)
    for(int blue=0; blue<6; blue++)
    {
        for(int green=0; green<6; green++)
        {
            for(int red=0; red<6; red++)
            {
                if(iIndex >= iNumEntries)
                    break;

                pi.palPalEntry[iIndex].peRed = (BYTE)((red * 255) / 5);
                pi.palPalEntry[iIndex].peGreen = (BYTE)((green * 255) / 5);
                pi.palPalEntry[iIndex].peBlue = (BYTE)((blue * 255) / 5);
                pi.palPalEntry[iIndex].peFlags = 0;

                iIndex++;
            }
        }
    }

    // A grey scale (24 divisions)
    for(int grey=0; grey<24; grey++)
    {
        if(iIndex >= iNumEntries)