/** * FreeRDP: A Remote Desktop Protocol Implementation * GDI Bitmap Functions * * Copyright 2010-2011 Marc-Andre Moreau <marcandre.moreau@gmail.com> * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include <stdio.h> #include <string.h> #include <stdlib.h> #include <freerdp/api.h> #include <freerdp/freerdp.h> #include <freerdp/gdi/gdi.h> #include <freerdp/codec/color.h> #include <freerdp/gdi/32bpp.h> #include <freerdp/gdi/16bpp.h> #include <freerdp/gdi/8bpp.h> #include <freerdp/gdi/bitmap.h> p_BitBlt BitBlt_[5] = { NULL, BitBlt_8bpp, BitBlt_16bpp, NULL, BitBlt_32bpp }; /** * Get pixel at the given coordinates.\n * @msdn{dd144909} * @param hdc device context * @param nXPos pixel x position * @param nYPos pixel y position * @return pixel color */ INLINE GDI_COLOR gdi_GetPixel(HGDI_DC hdc, int nXPos, int nYPos) { HGDI_BITMAP hBmp = (HGDI_BITMAP) hdc->selectedObject; GDI_COLOR* colorp = (GDI_COLOR*)&(hBmp->data[(nYPos * hBmp->width * hdc->bytesPerPixel) + nXPos * hdc->bytesPerPixel]); return (GDI_COLOR) *colorp; } INLINE BYTE gdi_GetPixel_8bpp(HGDI_BITMAP hBmp, int X, int Y) { return *((BYTE*)&(hBmp->data[(Y * hBmp->width) + X])); } INLINE UINT16 gdi_GetPixel_16bpp(HGDI_BITMAP hBmp, int X, int Y) { return *((UINT16*)&(hBmp->data[(Y * hBmp->width * 2) + X * 2])); } INLINE UINT32 gdi_GetPixel_32bpp(HGDI_BITMAP hBmp, int X, int Y) { return *((UINT32*)&(hBmp->data[(Y * hBmp->width * 4) + X * 4])); } INLINE BYTE* gdi_GetPointer_8bpp(HGDI_BITMAP hBmp, int X, int Y) { return ((BYTE*)&(hBmp->data[(Y * hBmp->width) + X])); } INLINE UINT16* gdi_GetPointer_16bpp(HGDI_BITMAP hBmp, int X, int Y) { return ((UINT16*)&(hBmp->data[(Y * hBmp->width * 2) + X * 2])); } INLINE UINT32* gdi_GetPointer_32bpp(HGDI_BITMAP hBmp, int X, int Y) { return ((UINT32*)&(hBmp->data[(Y * hBmp->width * 4) + X * 4])); } /** * Set pixel at the given coordinates.\n * @msdn{dd145078} * @param hdc device context * @param X pixel x position * @param Y pixel y position * @param crColor new pixel color * @return */ INLINE GDI_COLOR gdi_SetPixel(HGDI_DC hdc, int X, int Y, GDI_COLOR crColor) { HGDI_BITMAP hBmp = (HGDI_BITMAP) hdc->selectedObject; *((GDI_COLOR*)&(hBmp->data[(Y * hBmp->width * hdc->bytesPerPixel) + X * hdc->bytesPerPixel])) = crColor; return 0; } INLINE void gdi_SetPixel_8bpp(HGDI_BITMAP hBmp, int X, int Y, BYTE pixel) { *((BYTE*)&(hBmp->data[(Y * hBmp->width) + X])) = pixel; } INLINE void gdi_SetPixel_16bpp(HGDI_BITMAP hBmp, int X, int Y, UINT16 pixel) { *((UINT16*)&(hBmp->data[(Y * hBmp->width * 2) + X * 2])) = pixel; } INLINE void gdi_SetPixel_32bpp(HGDI_BITMAP hBmp, int X, int Y, UINT32 pixel) { *((UINT32*)&(hBmp->data[(Y * hBmp->width * 4) + X * 4])) = pixel; } /** * Create a new bitmap with the given width, height, color format and pixel buffer.\n * @msdn{dd183485} * @param nWidth width * @param nHeight height * @param cBitsPerPixel bits per pixel * @param data pixel buffer * @return new bitmap */ HGDI_BITMAP gdi_CreateBitmap(int nWidth, int nHeight, int cBitsPerPixel, BYTE* data) { HGDI_BITMAP hBitmap = (HGDI_BITMAP) malloc(sizeof(GDI_BITMAP)); hBitmap->objectType = GDIOBJECT_BITMAP; hBitmap->bitsPerPixel = cBitsPerPixel; hBitmap->bytesPerPixel = (cBitsPerPixel + 1) / 8; hBitmap->scanline = nWidth * hBitmap->bytesPerPixel; hBitmap->width = nWidth; hBitmap->height = nHeight; hBitmap->data = data; return hBitmap; } /** * Create a new bitmap of the given width and height compatible with the current device context.\n * @msdn{dd183488} * @param hdc device context * @param nWidth width * @param nHeight height * @return new bitmap */ HGDI_BITMAP gdi_CreateCompatibleBitmap(HGDI_DC hdc, int nWidth, int nHeight) { HGDI_BITMAP hBitmap = (HGDI_BITMAP) malloc(sizeof(GDI_BITMAP)); if (!hBitmap) return NULL; hBitmap->objectType = GDIOBJECT_BITMAP; hBitmap->bytesPerPixel = hdc->bytesPerPixel; hBitmap->bitsPerPixel = hdc->bitsPerPixel; hBitmap->width = nWidth; hBitmap->height = nHeight; hBitmap->data = _aligned_malloc(nWidth * nHeight * hBitmap->bytesPerPixel, 16); hBitmap->scanline = nWidth * hBitmap->bytesPerPixel; return hBitmap; } /** * Perform a bit blit operation on the given pixel buffers.\n * @msdn{dd183370} * @param hdcDest destination device context * @param nXDest destination x1 * @param nYDest destination y1 * @param nWidth width * @param nHeight height * @param hdcSrc source device context * @param nXSrc source x1 * @param nYSrc source y1 * @param rop raster operation code * @return 1 if successful, 0 otherwise */ int gdi_BitBlt(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc, int rop) { p_BitBlt _BitBlt = BitBlt_[IBPP(hdcDest->bitsPerPixel)]; if (_BitBlt != NULL) return _BitBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, rop); else return 0; }