mirror of https://github.com/FreeRDP/FreeRDP
655 lines
14 KiB
C
655 lines
14 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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#include <freerdp/config.h>
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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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#include "../gdi/gdi.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. 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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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 =
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&(hBmp->data[(nYPos * hBmp->scanline) + nXPos * FreeRDPGetBytesPerPixel(hBmp->format)]);
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return FreeRDPReadColor(data, hBmp->format);
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}
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BYTE* gdi_GetPointer(HGDI_BITMAP hBmp, UINT32 X, UINT32 Y)
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{
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UINT32 bpp = FreeRDPGetBytesPerPixel(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. msdn{dd145078}
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*
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* @param hBmp 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 the color written
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*/
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static INLINE UINT32 gdi_SetPixelBmp(HGDI_BITMAP hBmp, UINT32 X, UINT32 Y, UINT32 crColor)
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{
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BYTE* p = &hBmp->data[(Y * hBmp->scanline) + X * FreeRDPGetBytesPerPixel(hBmp->format)];
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FreeRDPWriteColor(p, hBmp->format, crColor);
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return crColor;
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}
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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. msdn{dd183485}
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*
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* @param nWidth width
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* @param nHeight height
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* @param format the color format used
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* @param data pixel buffer
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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, BYTE* data)
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{
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return gdi_CreateBitmapEx(nWidth, nHeight, format, 0, data, winpr_aligned_free);
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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. msdn{dd183485}
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*
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* @param nWidth width
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* @param nHeight height
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* @param format the color format used
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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_CreateBitmapEx(UINT32 nWidth, UINT32 nHeight, UINT32 format, UINT32 stride,
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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 * FreeRDPGetBytesPerPixel(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.
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* msdn{dd183488}
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*
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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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*
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* @return new bitmap
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*/
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HGDI_BITMAP gdi_CreateCompatibleBitmap(HGDI_DC hdc, UINT32 nWidth, 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 = winpr_aligned_malloc(
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1ull * nWidth * nHeight * FreeRDPGetBytesPerPixel(hBitmap->format), 16);
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hBitmap->free = winpr_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 * FreeRDPGetBytesPerPixel(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, UINT32 format)
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{
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UINT32 stack[10] = { 0 };
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UINT32 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++] = FreeRDPGetColor(format, 0, 0, 0, 0xFF);
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break;
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case '1':
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stack[stackp++] = FreeRDPGetColor(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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static INLINE BOOL BitBlt_write(HGDI_DC hdcDest, HGDI_DC hdcSrc, INT32 nXDest, INT32 nYDest,
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INT32 nXSrc, INT32 nYSrc, INT32 x, INT32 y, BOOL useSrc,
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BOOL usePat, UINT32 style, const char* rop,
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const gdiPalette* palette)
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{
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UINT32 dstColor;
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UINT32 colorA;
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UINT32 colorB = 0;
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UINT32 colorC = 0;
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const INT32 dstX = nXDest + x;
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const INT32 dstY = nYDest + y;
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BYTE* dstp = gdi_get_bitmap_pointer(hdcDest, dstX, dstY);
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if (!dstp)
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{
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WLog_ERR(TAG, "dstp=%p", (const void*)dstp);
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return FALSE;
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}
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colorA = FreeRDPReadColor(dstp, hdcDest->format);
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if (useSrc)
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{
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const BYTE* srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc + x, nYSrc + y);
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if (!srcp)
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{
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WLog_ERR(TAG, "srcp=%p", (const void*)srcp);
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return FALSE;
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}
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colorC = FreeRDPReadColor(srcp, hdcSrc->format);
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colorC = FreeRDPConvertColor(colorC, hdcSrc->format, hdcDest->format, palette);
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}
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if (usePat)
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{
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switch (style)
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{
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case GDI_BS_SOLID:
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colorB = hdcDest->brush->color;
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break;
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case GDI_BS_HATCHED:
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case GDI_BS_PATTERN:
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{
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const BYTE* patp = gdi_get_brush_pointer(hdcDest, nXDest + x, nYDest + y);
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if (!patp)
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{
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WLog_ERR(TAG, "patp=%p", (const void*)patp);
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return FALSE;
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}
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colorB = FreeRDPReadColor(patp, hdcDest->format);
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}
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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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dstColor = process_rop(colorC, colorA, colorB, rop, hdcDest->format);
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return FreeRDPWriteColor(dstp, hdcDest->format, dstColor);
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}
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static BOOL adjust_src_coordinates(HGDI_DC hdcSrc, INT32 nWidth, INT32 nHeight, INT32* px,
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INT32* py)
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{
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HGDI_BITMAP hSrcBmp;
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INT32 nXSrc, nYSrc;
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if (!hdcSrc || (nWidth < 0) || (nHeight < 0) || !px || !py)
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return FALSE;
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hSrcBmp = (HGDI_BITMAP)hdcSrc->selectedObject;
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nXSrc = *px;
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nYSrc = *py;
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if (!hSrcBmp)
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return FALSE;
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if (nYSrc < 0)
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{
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nYSrc = 0;
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nHeight = nHeight + nYSrc;
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}
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if ((nXSrc) < 0)
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{
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nXSrc = 0;
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nWidth = nWidth + nXSrc;
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}
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if (hSrcBmp->width < (nXSrc + nWidth))
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nXSrc = hSrcBmp->width - nWidth;
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if (hSrcBmp->height < (nYSrc + nHeight))
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nYSrc = hSrcBmp->height - nHeight;
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if ((nXSrc < 0) || (nYSrc < 0))
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return FALSE;
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*px = nXSrc;
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*py = nYSrc;
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return TRUE;
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}
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static BOOL adjust_src_dst_coordinates(HGDI_DC hdcDest, INT32* pnXSrc, INT32* pnYSrc, INT32* pnXDst,
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INT32* pnYDst, INT32* pnWidth, INT32* pnHeight)
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{
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HGDI_BITMAP hDstBmp;
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volatile INT32 diffX, diffY;
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volatile INT32 nXSrc, nYSrc;
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volatile INT32 nXDst, nYDst, nWidth, nHeight;
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if (!hdcDest || !pnXSrc || !pnYSrc || !pnXDst || !pnYDst || !pnWidth || !pnHeight)
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return FALSE;
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hDstBmp = (HGDI_BITMAP)hdcDest->selectedObject;
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nXSrc = *pnXSrc;
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nYSrc = *pnYSrc;
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nXDst = *pnXDst;
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nYDst = *pnYDst;
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nWidth = *pnWidth;
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nHeight = *pnHeight;
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if (!hDstBmp)
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return FALSE;
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if (nXDst < 0)
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{
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nXSrc -= nXDst;
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nWidth += nXDst;
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nXDst = 0;
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}
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if (nYDst < 0)
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{
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nYSrc -= nYDst;
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nHeight += nYDst;
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nYDst = 0;
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}
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diffX = hDstBmp->width - nXDst - nWidth;
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if (diffX < 0)
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nWidth += diffX;
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diffY = hDstBmp->height - nYDst - nHeight;
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if (diffY < 0)
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nHeight += diffY;
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if ((nXDst < 0) || (nYDst < 0) || (nWidth < 0) || (nHeight < 0))
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{
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nXDst = 0;
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nYDst = 0;
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nWidth = 0;
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nHeight = 0;
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}
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*pnXSrc = nXSrc;
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*pnYSrc = nYSrc;
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*pnXDst = nXDst;
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*pnYDst = nYDst;
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*pnWidth = nWidth;
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*pnHeight = nHeight;
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return TRUE;
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}
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static BOOL BitBlt_process(HGDI_DC hdcDest, INT32 nXDest, INT32 nYDest, INT32 nWidth, INT32 nHeight,
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HGDI_DC hdcSrc, INT32 nXSrc, INT32 nYSrc, const char* rop,
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const gdiPalette* palette)
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{
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INT32 x, y;
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UINT32 style = 0;
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BOOL useSrc = FALSE;
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BOOL usePat = FALSE;
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const char* iter = rop;
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while (*iter != '\0')
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{
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switch (*iter++)
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{
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case 'P':
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usePat = TRUE;
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break;
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case 'S':
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useSrc = TRUE;
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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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if (!hdcDest)
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return FALSE;
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if (!adjust_src_dst_coordinates(hdcDest, &nXSrc, &nYSrc, &nXDest, &nYDest, &nWidth, &nHeight))
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return FALSE;
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if (useSrc && !hdcSrc)
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return FALSE;
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if (useSrc)
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{
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if (!adjust_src_coordinates(hdcSrc, nWidth, nHeight, &nXSrc, &nYSrc))
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return FALSE;
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}
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if (usePat)
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{
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style = gdi_GetBrushStyle(hdcDest);
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switch (style)
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{
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case GDI_BS_SOLID:
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case GDI_BS_HATCHED:
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case GDI_BS_PATTERN:
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break;
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default:
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WLog_ERR(TAG, "Invalid brush!!");
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return FALSE;
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}
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}
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if ((nXDest > nXSrc) && (nYDest > nYSrc))
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{
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for (y = nHeight - 1; y >= 0; y--)
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{
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for (x = nWidth - 1; x >= 0; x--)
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{
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if (!BitBlt_write(hdcDest, hdcSrc, nXDest, nYDest, nXSrc, nYSrc, x, y, useSrc,
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usePat, style, rop, palette))
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return FALSE;
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}
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}
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}
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else if (nXDest > nXSrc)
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{
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for (y = 0; y < nHeight; y++)
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{
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for (x = nWidth - 1; x >= 0; x--)
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{
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if (!BitBlt_write(hdcDest, hdcSrc, nXDest, nYDest, nXSrc, nYSrc, x, y, useSrc,
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usePat, style, rop, palette))
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return FALSE;
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}
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}
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}
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else if (nYDest > nYSrc)
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{
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for (y = nHeight - 1; y >= 0; y--)
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{
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for (x = 0; x < nWidth; x++)
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{
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if (!BitBlt_write(hdcDest, hdcSrc, nXDest, nYDest, nXSrc, nYSrc, x, y, useSrc,
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usePat, style, rop, palette))
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return FALSE;
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}
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}
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}
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else
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{
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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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if (!BitBlt_write(hdcDest, hdcSrc, nXDest, nYDest, nXSrc, nYSrc, x, y, useSrc,
|
|
usePat, style, rop, palette))
|
|
return FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Perform a bit blit operation on the given pixel buffers.
|
|
* 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 0 on failure, non-zero otherwise
|
|
*/
|
|
BOOL gdi_BitBlt(HGDI_DC hdcDest, INT32 nXDest, INT32 nYDest, INT32 nWidth, INT32 nHeight,
|
|
HGDI_DC hdcSrc, INT32 nXSrc, INT32 nYSrc, DWORD rop, const gdiPalette* palette)
|
|
{
|
|
HGDI_BITMAP hSrcBmp, hDstBmp;
|
|
|
|
if (!hdcDest)
|
|
return FALSE;
|
|
|
|
if (!gdi_ClipCoords(hdcDest, &nXDest, &nYDest, &nWidth, &nHeight, &nXSrc, &nYSrc))
|
|
return TRUE;
|
|
|
|
/* Check which ROP should be performed.
|
|
* Some specific ROP are used heavily and are resource intensive,
|
|
* add optimized versions for these here.
|
|
*
|
|
* For all others fall back to the generic implementation.
|
|
*/
|
|
switch (rop)
|
|
{
|
|
case GDI_SRCCOPY:
|
|
if (!hdcSrc)
|
|
return FALSE;
|
|
|
|
if (!adjust_src_dst_coordinates(hdcDest, &nXSrc, &nYSrc, &nXDest, &nYDest, &nWidth,
|
|
&nHeight))
|
|
return FALSE;
|
|
|
|
if (!adjust_src_coordinates(hdcSrc, nWidth, nHeight, &nXSrc, &nYSrc))
|
|
return FALSE;
|
|
|
|
hSrcBmp = (HGDI_BITMAP)hdcSrc->selectedObject;
|
|
hDstBmp = (HGDI_BITMAP)hdcDest->selectedObject;
|
|
|
|
if (!hSrcBmp || !hDstBmp)
|
|
return FALSE;
|
|
|
|
if (!freerdp_image_copy(hDstBmp->data, hDstBmp->format, hDstBmp->scanline, nXDest,
|
|
nYDest, nWidth, nHeight, hSrcBmp->data, hSrcBmp->format,
|
|
hSrcBmp->scanline, nXSrc, nYSrc, palette, FREERDP_FLIP_NONE))
|
|
return FALSE;
|
|
|
|
break;
|
|
|
|
case GDI_DSTCOPY:
|
|
hSrcBmp = (HGDI_BITMAP)hdcDest->selectedObject;
|
|
hDstBmp = (HGDI_BITMAP)hdcDest->selectedObject;
|
|
|
|
if (!adjust_src_dst_coordinates(hdcDest, &nXSrc, &nYSrc, &nXDest, &nYDest, &nWidth,
|
|
&nHeight))
|
|
return FALSE;
|
|
|
|
if (!adjust_src_coordinates(hdcDest, nWidth, nHeight, &nXSrc, &nYSrc))
|
|
return FALSE;
|
|
|
|
if (!hSrcBmp || !hDstBmp)
|
|
return FALSE;
|
|
|
|
if (!freerdp_image_copy(hDstBmp->data, hDstBmp->format, hDstBmp->scanline, nXDest,
|
|
nYDest, nWidth, nHeight, hSrcBmp->data, hSrcBmp->format,
|
|
hSrcBmp->scanline, nXSrc, nYSrc, palette, FREERDP_FLIP_NONE))
|
|
return FALSE;
|
|
|
|
break;
|
|
|
|
default:
|
|
if (!BitBlt_process(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc,
|
|
gdi_rop_to_string(rop), palette))
|
|
return FALSE;
|
|
|
|
break;
|
|
}
|
|
|
|
if (!gdi_InvalidateRegion(hdcDest, nXDest, nYDest, nWidth, nHeight))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|