103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
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/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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*
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* Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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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 "shadow.h"
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#include "shadow_surface.h"
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#define ALIGN_SCREEN_SIZE(size, align) ((size + align - 1) & (~(align - 1)))
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rdpShadowSurface* shadow_surface_new(rdpShadowServer* server, int x, int y, int width, int height)
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{
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rdpShadowSurface* surface;
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surface = (rdpShadowSurface*)calloc(1, sizeof(rdpShadowSurface));
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if (!surface)
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return NULL;
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surface->server = server;
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surface->x = x;
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surface->y = y;
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surface->width = width;
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surface->height = height;
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surface->scanline = ALIGN_SCREEN_SIZE(surface->width, 4) * 4;
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surface->format = PIXEL_FORMAT_BGRX32;
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surface->data = (BYTE*)calloc(ALIGN_SCREEN_SIZE(surface->height, 4), surface->scanline);
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if (!surface->data)
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{
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free(surface);
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return NULL;
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}
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if (!InitializeCriticalSectionAndSpinCount(&(surface->lock), 4000))
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{
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free(surface->data);
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free(surface);
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return NULL;
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}
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region16_init(&(surface->invalidRegion));
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return surface;
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}
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void shadow_surface_free(rdpShadowSurface* surface)
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{
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if (!surface)
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return;
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free(surface->data);
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DeleteCriticalSection(&(surface->lock));
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region16_uninit(&(surface->invalidRegion));
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free(surface);
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}
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BOOL shadow_surface_resize(rdpShadowSurface* surface, int x, int y, int width, int height)
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{
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BYTE* buffer = NULL;
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int scanline = ALIGN_SCREEN_SIZE(width, 4) * 4;
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if (!surface)
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return FALSE;
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if ((width == surface->width) && (height == surface->height))
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{
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/* We don't need to reset frame buffer, just update left top */
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surface->x = x;
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surface->y = y;
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return TRUE;
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}
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buffer = (BYTE*)realloc(surface->data, scanline * ALIGN_SCREEN_SIZE(height, 4));
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if (buffer)
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{
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surface->x = x;
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surface->y = y;
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surface->width = width;
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surface->height = height;
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surface->scanline = scanline;
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surface->data = buffer;
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return TRUE;
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}
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return FALSE;
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}
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