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/**
* FreeRDP: A Remote Desktop Protocol Implementation
*
* Copyright 2014 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.
*/
#include <freerdp/config.h>
#include "shadow.h"
#include "shadow_surface.h"
#define ALIGN_SCREEN_SIZE(size, align) \
((((size) % (align)) != 0) ? ((size) + (align) - ((size) % (align))) : (size))
rdpShadowSurface* shadow_surface_new(rdpShadowServer* server, UINT16 x, UINT16 y, UINT32 width,
UINT32 height)
{
rdpShadowSurface* surface = NULL;
surface = (rdpShadowSurface*)calloc(1, sizeof(rdpShadowSurface));
if (!surface)
return NULL;
surface->server = server;
surface->x = x;
surface->y = y;
surface->width = width;
surface->height = height;
surface->scanline = ALIGN_SCREEN_SIZE(surface->width, 32) * 4;
surface->format = PIXEL_FORMAT_BGRX32;
surface->data = (BYTE*)calloc(ALIGN_SCREEN_SIZE(surface->height, 32), surface->scanline);
if (!surface->data)
{
free(surface);
return NULL;
}
if (!InitializeCriticalSectionAndSpinCount(&(surface->lock), 4000))
{
free(surface->data);
free(surface);
return NULL;
}
region16_init(&(surface->invalidRegion));
return surface;
}
void shadow_surface_free(rdpShadowSurface* surface)
{
if (!surface)
return;
free(surface->data);
DeleteCriticalSection(&(surface->lock));
region16_uninit(&(surface->invalidRegion));
free(surface);
}
BOOL shadow_surface_resize(rdpShadowSurface* surface, UINT16 x, UINT16 y, UINT32 width,
UINT32 height)
{
BYTE* buffer = NULL;
UINT32 scanline = ALIGN_SCREEN_SIZE(width, 4) * 4;
if (!surface)
return FALSE;
if ((width == surface->width) && (height == surface->height))
{
/* We don't need to reset frame buffer, just update left top */
surface->x = x;
surface->y = y;
return TRUE;
}
buffer = (BYTE*)realloc(surface->data, 1ull * scanline * ALIGN_SCREEN_SIZE(height, 4ull));
if (buffer)
{
surface->x = x;
surface->y = y;
surface->width = width;
surface->height = height;
surface->scanline = scanline;
surface->data = buffer;
return TRUE;
}
return FALSE;
}
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