107 lines
2.6 KiB
C
107 lines
2.6 KiB
C
/**
|
|
* 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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#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;
|
|
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, scanline * ALIGN_SCREEN_SIZE(height, 4));
|
|
|
|
if (buffer)
|
|
{
|
|
surface->x = x;
|
|
surface->y = y;
|
|
surface->width = width;
|
|
surface->height = height;
|
|
surface->scanline = scanline;
|
|
surface->data = buffer;
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|