380 lines
9.0 KiB
C
380 lines
9.0 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* GDI Bitmap Functions
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*
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* Copyright 2010-2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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* Copyright 2016 Armin Novak <armin.novak@thincast.com>
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* Copyright 2016 Thincast Technologies GmbH
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <freerdp/api.h>
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#include <freerdp/freerdp.h>
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#include <freerdp/gdi/gdi.h>
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#include <freerdp/codec/color.h>
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#include <freerdp/gdi/region.h>
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#include <freerdp/gdi/bitmap.h>
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#include <freerdp/log.h>
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#include <freerdp/gdi/shape.h>
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#include "brush.h"
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#include "clipping.h"
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#define TAG FREERDP_TAG("gdi.bitmap")
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/**
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* Get pixel at the given coordinates.\n
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* @msdn{dd144909}
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* @param hdc device context
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* @param nXPos pixel x position
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* @param nYPos pixel y position
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* @return pixel color
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*/
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INLINE UINT32 gdi_GetPixel(HGDI_DC hdc, UINT32 nXPos, UINT32 nYPos)
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{
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HGDI_BITMAP hBmp = (HGDI_BITMAP) hdc->selectedObject;
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BYTE* data = &(hBmp->data[(nYPos * hBmp->scanline) + nXPos * GetBytesPerPixel(
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hBmp->format)]);
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return ReadColor(data, hBmp->format);
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}
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INLINE BYTE* gdi_GetPointer(HGDI_BITMAP hBmp, UINT32 X, UINT32 Y)
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{
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UINT32 bpp = GetBytesPerPixel(hBmp->format);
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return &hBmp->data[(Y * hBmp->width * bpp) + X * bpp];
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}
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/**
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* Set pixel at the given coordinates.\n
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* @msdn{dd145078}
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* @param hdc device context
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* @param X pixel x position
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* @param Y pixel y position
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* @param crColor new pixel color
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* @return
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*/
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static INLINE UINT32 gdi_SetPixelBmp(HGDI_BITMAP hBmp, UINT32 X, UINT32 Y,
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UINT32 crColor)
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{
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BYTE* p = &hBmp->data[(Y * hBmp->scanline) + X * GetBytesPerPixel(
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hBmp->format)];
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WriteColor(p, hBmp->format, crColor);
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return crColor;
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}
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INLINE UINT32 gdi_SetPixel(HGDI_DC hdc, UINT32 X, UINT32 Y, UINT32 crColor)
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{
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HGDI_BITMAP hBmp = (HGDI_BITMAP) hdc->selectedObject;
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return gdi_SetPixelBmp(hBmp, X, Y, crColor);
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}
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/**
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* Create a new bitmap with the given width, height, color format and pixel buffer.\n
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* @msdn{dd183485}
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* @param nWidth width
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* @param nHeight height
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* @param cBitsPerPixel bits per pixel
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* @param data pixel buffer
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* @param fkt_free The function used for deallocation of the buffer, NULL for none.
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* @return new bitmap
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*/
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HGDI_BITMAP gdi_CreateBitmap(UINT32 nWidth, UINT32 nHeight, UINT32 format,
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BYTE* data)
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{
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return gdi_CreateBitmapEx(nWidth, nHeight, format, 0, data, _aligned_free);
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}
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HGDI_BITMAP gdi_CreateBitmapEx(UINT32 nWidth, UINT32 nHeight, UINT32 format,
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UINT32 stride, BYTE* data, void (*fkt_free)(void*))
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{
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HGDI_BITMAP hBitmap = (HGDI_BITMAP) calloc(1, sizeof(GDI_BITMAP));
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if (!hBitmap)
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return NULL;
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hBitmap->objectType = GDIOBJECT_BITMAP;
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hBitmap->format = format;
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if (stride > 0)
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hBitmap->scanline = stride;
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else
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hBitmap->scanline = nWidth * GetBytesPerPixel(hBitmap->format);
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hBitmap->width = nWidth;
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hBitmap->height = nHeight;
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hBitmap->data = data;
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hBitmap->free = fkt_free;
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return hBitmap;
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}
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/**
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* Create a new bitmap of the given width and height compatible with the current device context.\n
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* @msdn{dd183488}
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* @param hdc device context
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* @param nWidth width
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* @param nHeight height
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* @return new bitmap
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*/
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HGDI_BITMAP gdi_CreateCompatibleBitmap(HGDI_DC hdc, UINT32 nWidth,
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UINT32 nHeight)
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{
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HGDI_BITMAP hBitmap = (HGDI_BITMAP) calloc(1, sizeof(GDI_BITMAP));
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if (!hBitmap)
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return NULL;
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hBitmap->objectType = GDIOBJECT_BITMAP;
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hBitmap->format = hdc->format;
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hBitmap->width = nWidth;
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hBitmap->height = nHeight;
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hBitmap->data = _aligned_malloc(nWidth * nHeight * GetBytesPerPixel(
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hBitmap->format), 16);
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hBitmap->free = _aligned_free;
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if (!hBitmap->data)
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{
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free(hBitmap);
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return NULL;
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}
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hBitmap->scanline = nWidth * GetBytesPerPixel(hBitmap->format);
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return hBitmap;
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}
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static BOOL op_not(UINT32* stack, UINT32* stackp)
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{
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if (!stack || !stackp)
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return FALSE;
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if (*stackp < 1)
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return FALSE;
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stack[(*stackp) - 1] = ~stack[(*stackp) - 1];
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return TRUE;
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}
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static BOOL op_and(UINT32* stack, UINT32* stackp)
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{
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if (!stack || !stackp)
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return FALSE;
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if (*stackp < 2)
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return FALSE;
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(*stackp)--;
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stack[(*stackp) - 1] &= stack[(*stackp)];
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return TRUE;
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}
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static BOOL op_or(UINT32* stack, UINT32* stackp)
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{
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if (!stack || !stackp)
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return FALSE;
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if (*stackp < 2)
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return FALSE;
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(*stackp)--;
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stack[(*stackp) - 1] |= stack[(*stackp)];
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return TRUE;
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}
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static BOOL op_xor(UINT32* stack, UINT32* stackp)
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{
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if (!stack || !stackp)
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return FALSE;
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if (*stackp < 2)
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return FALSE;
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(*stackp)--;
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stack[(*stackp) - 1] ^= stack[(*stackp)];
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return TRUE;
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}
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static UINT32 process_rop(UINT32 src, UINT32 dst, UINT32 pat, const char* rop,
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UINT32 format)
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{
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DWORD stack[10];
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DWORD stackp = 0;
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while (*rop != '\0')
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{
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char op = *rop++;
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switch (op)
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{
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case '0':
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stack[stackp++] = GetColor(format, 0, 0, 0, 0xFF);
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break;
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case '1':
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stack[stackp++] = GetColor(format, 0xFF, 0xFF, 0xFF, 0xFF);
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break;
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case 'D':
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stack[stackp++] = dst;
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break;
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case 'S':
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stack[stackp++] = src;
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break;
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case 'P':
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stack[stackp++] = pat;
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break;
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case 'x':
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op_xor(stack, &stackp);
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break;
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case 'a':
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op_and(stack, &stackp);
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break;
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case 'o':
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op_or(stack, &stackp);
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break;
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case 'n':
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op_not(stack, &stackp);
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break;
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default:
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break;
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}
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}
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return stack[0];
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}
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BOOL BitBlt_process(HGDI_DC hdcDest, UINT32 nXDest, UINT32 nYDest,
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UINT32 nWidth, UINT32 nHeight, HGDI_DC hdcSrc,
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UINT32 nXSrc, UINT32 nYSrc, const char* rop)
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{
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UINT32 x, y;
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UINT32 color;
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/* DPSnoo */
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if (!hdcDest || !hdcSrc)
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return FALSE;
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switch (gdi_GetBrushStyle(hdcDest))
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{
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case GDI_BS_SOLID:
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color = hdcDest->brush->color;
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for (y = 0; y < nHeight; y++)
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{
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for (x = 0; x < nWidth; x++)
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{
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const BYTE* srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc + x, nYSrc + y);
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BYTE* dstp = gdi_get_bitmap_pointer(hdcDest, nXDest + x, nYDest + y);
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if (srcp && dstp)
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{
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UINT32 colorA = ReadColor(dstp, hdcDest->format);
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UINT32 colorC = ReadColor(srcp, hdcSrc->format);
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UINT32 dstColor;
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colorC = ConvertColor(colorC, hdcSrc->format, hdcDest->format, NULL);
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dstColor = process_rop(colorC, colorA, color, rop, hdcDest->format);
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WriteColor(dstp, hdcDest->format, dstColor);
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}
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}
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}
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break;
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default:
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for (y = 0; y < nHeight; y++)
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{
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for (x = 0; x < nWidth; x++)
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{
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const BYTE* srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc + x, nYSrc + y);
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const BYTE* patp = gdi_get_brush_pointer(hdcDest, nXDest + x, nYDest + y);
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BYTE* dstp = gdi_get_bitmap_pointer(hdcDest, nXDest + x, nYDest + y);
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if (srcp && patp && dstp)
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{
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UINT32 colorA = ReadColor(dstp, hdcDest->format);
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UINT32 colorB = ReadColor(patp, hdcDest->format);
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UINT32 colorC = ReadColor(srcp, hdcSrc->format);
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UINT32 dstColor;
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colorC = ConvertColor(colorC, hdcSrc->format, hdcDest->format, NULL);
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dstColor = process_rop(colorC, colorA, colorB, rop, hdcDest->format);
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WriteColor(dstp, hdcDest->format, dstColor);
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}
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}
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}
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break;
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}
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return TRUE;
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}
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/**
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* Perform a bit blit operation on the given pixel buffers.\n
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* @msdn{dd183370}
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* @param hdcDest destination device context
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* @param nXDest destination x1
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* @param nYDest destination y1
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* @param nWidth width
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* @param nHeight height
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* @param hdcSrc source device context
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* @param nXSrc source x1
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* @param nYSrc source y1
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* @param rop raster operation code
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* @return 0 on failure, non-zero otherwise
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*/
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BOOL gdi_BitBlt(HGDI_DC hdcDest, UINT32 nXDest, UINT32 nYDest,
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UINT32 nWidth, UINT32 nHeight, HGDI_DC hdcSrc,
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UINT32 nXSrc, UINT32 nYSrc, DWORD rop, const gdiPalette* palette)
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{
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if (!hdcDest)
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return FALSE;
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if (hdcSrc != NULL)
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{
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if (!gdi_ClipCoords(hdcDest, &nXDest, &nYDest, &nWidth, &nHeight, &nXSrc,
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&nYSrc))
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return TRUE;
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}
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else
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{
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if (!gdi_ClipCoords(hdcDest, &nXDest, &nYDest, &nWidth, &nHeight, NULL, NULL))
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return TRUE;
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}
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if (!gdi_InvalidateRegion(hdcDest, nXDest, nYDest, nWidth, nHeight))
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return FALSE;
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return BitBlt_process(hdcDest, nXDest, nYDest,
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nWidth, nHeight, hdcSrc,
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nXSrc, nYSrc, gdi_rop_to_string(rop));
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}
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