420 lines
11 KiB
C++
420 lines
11 KiB
C++
/*==========================================================================
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*
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* Copyright (C) 1995-1996 Microsoft Corporation. All Rights Reserved.
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*
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* File: ddutil.cpp
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* Content: Routines for loading bitmap and palettes from resources
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*
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***************************************************************************/
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#undef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#include "stdafx.h"
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#include "ddutil.h"
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LPDIRECTDRAW CDDHelper::lpDD;
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CRGB16* CDDHelper::CreateRGB16 ( LPDIRECTDRAWSURFACE Surface)
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{
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DDSURFACEDESC ddsd;
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BYTE shiftcount;
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//get a surface despriction
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ddsd.dwSize = sizeof( ddsd );
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ddsd.dwFlags = DDSD_PIXELFORMAT;
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if (Surface->GetSurfaceDesc ( &ddsd ) != DD_OK )
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return FALSE;
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//get red
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shiftcount = 0;
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CRGB16* rgb16 = new CRGB16();
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while ( !(ddsd.ddpfPixelFormat.dwRBitMask & 1) )
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{
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ddsd.ddpfPixelFormat.dwRBitMask >>= 1;
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shiftcount++;
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}
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rgb16->depth.rgbRed = (BYTE) ddsd.ddpfPixelFormat.dwRBitMask;
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rgb16->Position.rgbRed = shiftcount;
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rgb16->Amount.rgbRed = (ddsd.ddpfPixelFormat.dwRBitMask
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== 0x1f) ? 3 : 2;
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//get green
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shiftcount = 0;
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while ( !(ddsd.ddpfPixelFormat.dwGBitMask & 1) )
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{
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ddsd.ddpfPixelFormat.dwGBitMask >>= 1;
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shiftcount++;
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}
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rgb16->depth.rgbGreen =(BYTE)ddsd.ddpfPixelFormat.dwGBitMask;
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rgb16->Position.rgbGreen = shiftcount;
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rgb16->Amount.rgbGreen = (ddsd.ddpfPixelFormat.dwGBitMask
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== 0x1f) ? 3 : 2;
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//get Blue
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shiftcount = 0;
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while ( !(ddsd.ddpfPixelFormat.dwBBitMask & 1) )
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{
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ddsd.ddpfPixelFormat.dwBBitMask >>= 1;
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shiftcount++;
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}
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rgb16->depth.rgbBlue =(BYTE)ddsd.ddpfPixelFormat.dwBBitMask;
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rgb16->Position.rgbBlue = shiftcount;
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rgb16->Amount.rgbBlue = (ddsd.ddpfPixelFormat.dwBBitMask
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== 0x1f) ? 3 : 2;
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return rgb16;
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}
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/*
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* DDLoadBitmap
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*
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* create a DirectDrawSurface from a bitmap resource.
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*
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*/
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IDirectDrawSurface * CDDHelper::DDLoadBitmap(LPCSTR szBitmap, int dx, int dy)
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{
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HBITMAP hbm;
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BITMAP bm;
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DDSURFACEDESC ddsd;
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IDirectDrawSurface *pdds;
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//
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// try to load the bitmap as a resource, if that fails, try it as a file
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//
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hbm = (HBITMAP)LoadImage(GetModuleHandle(NULL), szBitmap, IMAGE_BITMAP, dx, dy, LR_CREATEDIBSECTION);
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if (hbm == NULL)
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hbm = (HBITMAP)LoadImage(NULL, szBitmap, IMAGE_BITMAP, dx, dy, LR_LOADFROMFILE|LR_CREATEDIBSECTION);
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if (hbm == NULL)
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return NULL;
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//
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// get size of the bitmap
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//
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GetObject(hbm, sizeof(bm), &bm); // get size of bitmap
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//
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// create a DirectDrawSurface for this bitmap
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//
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ZeroMemory(&ddsd, sizeof(ddsd));
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ddsd.dwSize = sizeof(ddsd);
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ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT |DDSD_WIDTH;
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ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
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ddsd.dwWidth = bm.bmWidth;
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ddsd.dwHeight = bm.bmHeight;
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if (lpDD->CreateSurface(&ddsd, &pdds, NULL) != DD_OK)
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return NULL;
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DDCopyBitmap(pdds, hbm, 0, 0, 0, 0);
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DeleteObject(hbm);
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return pdds;
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}
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/*
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* DDReLoadBitmap
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*
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* load a bitmap from a file or resource into a directdraw surface.
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* normaly used to re-load a surface after a restore.
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*
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*/
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HRESULT CDDHelper::DDReLoadBitmap(IDirectDrawSurface *pdds, LPCSTR szBitmap)
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{
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HBITMAP hbm;
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HRESULT hr;
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//
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// try to load the bitmap as a resource, if that fails, try it as a file
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//
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hbm = (HBITMAP)LoadImage(GetModuleHandle(NULL), szBitmap, IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION);
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if (hbm == NULL)
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hbm = (HBITMAP)LoadImage(NULL, szBitmap, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE|LR_CREATEDIBSECTION);
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if (hbm == NULL)
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{
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OutputDebugString("handle is null\n");
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return E_FAIL;
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}
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hr = DDCopyBitmap(pdds, hbm, 0, 0, 0, 0);
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if (hr != DD_OK)
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{
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OutputDebugString("ddcopybitmap failed\n");
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}
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DeleteObject(hbm);
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return hr;
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}
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/*
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* DDCopyBitmap
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*
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* draw a bitmap into a DirectDrawSurface
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*
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*/
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HRESULT CDDHelper::DDCopyBitmap(IDirectDrawSurface *pdds, HBITMAP hbm, int x, int y, int dx, int dy)
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{
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HDC hdcImage;
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HDC hdc;
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BITMAP bm;
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DDSURFACEDESC ddsd;
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HRESULT hr;
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if (hbm == NULL || pdds == NULL)
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return E_FAIL;
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//
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// make sure this surface is restored.
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//
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pdds->Restore();
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//
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// select bitmap into a memoryDC so we can use it.
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//
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hdcImage = CreateCompatibleDC(NULL);
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if (!hdcImage)
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OutputDebugString("createcompatible dc failed\n");
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SelectObject(hdcImage, hbm);
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//
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// get size of the bitmap
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//
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GetObject(hbm, sizeof(bm), &bm); // get size of bitmap
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dx = dx == 0 ? bm.bmWidth : dx; // use the passed size, unless zero
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dy = dy == 0 ? bm.bmHeight : dy;
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//
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// get size of surface.
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//
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ddsd.dwSize = sizeof(ddsd);
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ddsd.dwFlags = DDSD_HEIGHT | DDSD_WIDTH;
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pdds->GetSurfaceDesc(&ddsd);
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if ((hr = pdds->GetDC(&hdc)) == DD_OK)
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{
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StretchBlt(hdc, 0, 0, ddsd.dwWidth, ddsd.dwHeight, hdcImage, x, y, dx, dy, SRCCOPY);
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pdds->ReleaseDC(hdc);
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}
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DeleteDC(hdcImage);
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return hr;
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}
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//
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// DDLoadPalette
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//
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// Create a DirectDraw palette object from a bitmap resoure
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//
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// if the resource does not exist or NULL is passed create a
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// default 332 palette.
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//
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IDirectDrawPalette * CDDHelper::DDLoadPalette(LPCSTR szBitmap)
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{
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IDirectDrawPalette* ddpal;
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int i;
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int n;
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int fh;
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HRSRC h;
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LPBITMAPINFOHEADER lpbi;
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PALETTEENTRY ape[256];
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RGBQUAD * prgb;
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//
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// build a 332 palette as the default.
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//
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for (i=0; i<256; i++)
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{
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ape[i].peRed = (BYTE)(((i >> 5) & 0x07) * 255 / 7);
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ape[i].peGreen = (BYTE)(((i >> 2) & 0x07) * 255 / 7);
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ape[i].peBlue = (BYTE)(((i >> 0) & 0x03) * 255 / 3);
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ape[i].peFlags = (BYTE)0;
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}
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//
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// get a pointer to the bitmap resource.
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//
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if (szBitmap && (h = FindResource(NULL, szBitmap, RT_BITMAP)))
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{
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lpbi = (LPBITMAPINFOHEADER)LockResource(LoadResource(NULL, h));
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if (!lpbi)
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OutputDebugString("lock resource failed\n");
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prgb = (RGBQUAD*)((BYTE*)lpbi + lpbi->biSize);
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if (lpbi == NULL || lpbi->biSize < sizeof(BITMAPINFOHEADER))
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n = 0;
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else if (lpbi->biBitCount > 8)
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n = 0;
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else if (lpbi->biClrUsed == 0)
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n = 1 << lpbi->biBitCount;
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else
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n = lpbi->biClrUsed;
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//
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// a DIB color table has its colors stored BGR not RGB
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// so flip them around.
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//
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for(i=0; i<n; i++ )
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{
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ape[i].peRed = prgb[i].rgbRed;
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ape[i].peGreen = prgb[i].rgbGreen;
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ape[i].peBlue = prgb[i].rgbBlue;
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ape[i].peFlags = 0;
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}
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}
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else if (szBitmap && (fh = _lopen(szBitmap, OF_READ)) != -1)
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{
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BITMAPFILEHEADER bf;
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BITMAPINFOHEADER bi;
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_lread(fh, &bf, sizeof(bf));
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_lread(fh, &bi, sizeof(bi));
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_lread(fh, ape, sizeof(ape));
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_lclose(fh);
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if (bi.biSize != sizeof(BITMAPINFOHEADER))
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n = 0;
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else if (bi.biBitCount > 8)
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n = 0;
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else if (bi.biClrUsed == 0)
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n = 1 << bi.biBitCount;
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else
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n = bi.biClrUsed;
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//
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// a DIB color table has its colors stored BGR not RGB
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// so flip them around.
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//
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for(i=0; i<n; i++ )
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{
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BYTE r = ape[i].peRed;
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ape[i].peRed = ape[i].peBlue;
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ape[i].peBlue = r;
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}
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}
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lpDD->CreatePalette(DDPCAPS_8BIT, ape, &ddpal, NULL);
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return ddpal;
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}
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/*
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* DDColorMatch
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*
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* convert a RGB color to a pysical color.
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*
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* we do this by leting GDI SetPixel() do the color matching
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* then we lock the memory and see what it got mapped to.
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*/
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DWORD CDDHelper::DDColorMatch(IDirectDrawSurface *pdds, COLORREF rgb)
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{
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COLORREF rgbT;
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HDC hdc;
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DWORD dw = CLR_INVALID;
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DDSURFACEDESC ddsd;
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HRESULT hres;
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//
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// use GDI SetPixel to color match for us
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//
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if (rgb != CLR_INVALID && pdds->GetDC(&hdc) == DD_OK)
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{
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rgbT = GetPixel(hdc, 0, 0); // save current pixel value
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SetPixel(hdc, 0, 0, rgb); // set our value
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pdds->ReleaseDC(hdc);
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}
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//
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// now lock the surface so we can read back the converted color
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//
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ddsd.dwSize = sizeof(ddsd);
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while ((hres = pdds->Lock(NULL, &ddsd, 0, NULL)) == DDERR_WASSTILLDRAWING)
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;
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if (hres == DD_OK)
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{
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dw = *(DWORD *)ddsd.lpSurface; // get DWORD
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dw &= (1 << ddsd.ddpfPixelFormat.dwRGBBitCount)-1; // mask it to bpp
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pdds->Unlock(NULL);
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}
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//
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// now put the color that was there back.
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//
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if (rgb != CLR_INVALID && pdds->GetDC(&hdc) == DD_OK)
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{
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SetPixel(hdc, 0, 0, rgbT);
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pdds->ReleaseDC(hdc);
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}
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return dw;
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}
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/*
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* DDSetColorKey
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*
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* set a color key for a surface, given a RGB.
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* if you pass CLR_INVALID as the color key, the pixel
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* in the upper-left corner will be used.
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*/
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HRESULT CDDHelper::DDSetColorKey(IDirectDrawSurface *pdds, COLORREF rgb)
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{
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DDCOLORKEY ddck;
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ddck.dwColorSpaceLowValue = DDColorMatch(pdds, rgb);
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ddck.dwColorSpaceHighValue = ddck.dwColorSpaceLowValue;
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return pdds->SetColorKey(DDCKEY_SRCBLT, &ddck);
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}
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static char out[256];
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char * CDDHelper::TraceError(HRESULT ddrval)
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{
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switch(ddrval)
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{
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case D3DRM_OK : break;
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case D3DRMERR_BADALLOC :
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return("Out of Memory");
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break;
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case D3DRMERR_BADDEVICE :
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return("Device is not compatible with render");
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break;
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case D3DRMERR_BADFILE :
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return("Data file is corrupt");
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break;
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case D3DRMERR_BADMAJORVERSION :
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return("Bad DLL major version");
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break;
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case D3DRMERR_BADMINORVERSION :
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return("Bad DLL minor version");
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break;
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case D3DRMERR_BADOBJECT :
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return("Object expected in argument");
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break;
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case D3DRMERR_BADTYPE :
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return("Bad argument type passed");
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break;
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case D3DRMERR_BADVALUE :
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return("Bad argument value passed");
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break;
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case D3DRMERR_FACEUSED :
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return("Face already used in a mesh");
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break;
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case D3DRMERR_FILENOTFOUND :
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return("File cannot be opened");
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break;
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case D3DRMERR_NOTDONEYET :
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return("Unimplemented");
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break;
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case D3DRMERR_NOTFOUND :
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return("Object not found in specified place");
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break;
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case D3DRMERR_UNABLETOEXECUTE :
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return("Unable to carry out procedure");
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break;
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}
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sprintf(out, "Unknown: %d", ddrval);
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return (out);
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}
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