FreeRDP/client/Windows/wf_graphics.c

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/**
* FreeRDP: A Remote Desktop Protocol Client
* Windows Graphical Objects
*
* Copyright 2010-2011 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/utils/memory.h>
#include <freerdp/codec/bitmap.h>
#include "wf_gdi.h"
#include "wf_graphics.h"
HBITMAP wf_create_dib(wfInfo* wfi, int width, int height, int bpp, uint8* data)
{
HDC hdc;
int negHeight;
HBITMAP bitmap;
BITMAPINFO bmi;
uint8* cdata = NULL;
/**
* See: http://msdn.microsoft.com/en-us/library/dd183376
* if biHeight is positive, the bitmap is bottom-up
* if biHeight is negative, the bitmap is top-down
* Since we get top-down bitmaps, let's keep it that way
*/
negHeight = (height < 0) ? height : height * (-1);
hdc = GetDC(NULL);
bmi.bmiHeader.biSize = sizeof(BITMAPINFO);
bmi.bmiHeader.biWidth = width;
bmi.bmiHeader.biHeight = negHeight;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 24;
bmi.bmiHeader.biCompression = BI_RGB;
bitmap = CreateDIBSection(hdc, &bmi, DIB_RGB_COLORS, (void**) &cdata, NULL, 0);
if (data != NULL)
freerdp_image_convert(data, cdata, width, height, bpp, 24, wfi->clrconv);
ReleaseDC(NULL, hdc);
GdiFlush();
return bitmap;
}
wfBitmap* wf_image_new(wfInfo* wfi, int width, int height, int bpp, uint8* data)
{
HDC hdc;
wfBitmap* image;
hdc = GetDC(NULL);
image = (wfBitmap*) malloc(sizeof(wfBitmap));
image->hdc = CreateCompatibleDC(hdc);
if (data == NULL)
image->bitmap = CreateCompatibleBitmap(hdc, width, height);
else
image->bitmap = wf_create_dib(wfi, width, height, bpp, data);
image->org_bitmap = (HBITMAP) SelectObject(image->hdc, image->bitmap);
ReleaseDC(NULL, hdc);
return image;
}
void wf_image_free(wfBitmap* image)
{
if (image != 0)
{
SelectObject(image->hdc, image->org_bitmap);
DeleteObject(image->bitmap);
DeleteDC(image->hdc);
free(image);
}
}
/* Bitmap Class */
void wf_Bitmap_New(rdpContext* context, rdpBitmap* bitmap)
{
HDC hdc;
wfBitmap* wf_bitmap = (wfBitmap*) bitmap;
wfInfo* wfi = ((wfContext*) context)->wfi;
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wf_bitmap = (wfBitmap*) bitmap;
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hdc = GetDC(NULL);
wf_bitmap->hdc = CreateCompatibleDC(hdc);
if (bitmap->data == NULL)
wf_bitmap->bitmap = CreateCompatibleBitmap(hdc, bitmap->width, bitmap->height);
else
wf_bitmap->bitmap = wf_create_dib(wfi, bitmap->width, bitmap->height, bitmap->bpp, bitmap->data);
wf_bitmap->org_bitmap = (HBITMAP) SelectObject(wf_bitmap->hdc, wf_bitmap->bitmap);
ReleaseDC(NULL, hdc);
}
void wf_Bitmap_Free(rdpContext* context, rdpBitmap* bitmap)
{
wfBitmap* wf_bitmap = (wfBitmap*) bitmap;
if (wf_bitmap != 0)
{
SelectObject(wf_bitmap->hdc, wf_bitmap->org_bitmap);
DeleteObject(wf_bitmap->bitmap);
DeleteDC(wf_bitmap->hdc);
}
}
void wf_Bitmap_Paint(rdpContext* context, rdpBitmap* bitmap)
{
int width, height;
wfBitmap* wf_bitmap = (wfBitmap*) bitmap;
wfInfo* wfi = ((wfContext*) context)->wfi;
width = bitmap->right - bitmap->left + 1;
height = bitmap->bottom - bitmap->top + 1;
BitBlt(wfi->primary->hdc, bitmap->left, bitmap->top,
width, height, wf_bitmap->hdc, 0, 0, GDI_SRCCOPY);
wf_invalidate_region(wfi, bitmap->left, bitmap->top, width, height);
}
void wf_Bitmap_Decompress(rdpContext* context, rdpBitmap* bitmap,
uint8* data, int width, int height, int bpp, int length, boolean compressed)
{
uint16 size;
size = width * height * (bpp / 8);
if (bitmap->data == NULL)
bitmap->data = (uint8*) xmalloc(size);
else
bitmap->data = (uint8*) xrealloc(bitmap->data, size);
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if (compressed)
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{
boolean status;
status = bitmap_decompress(data, bitmap->data, width, height, length, bpp, bpp);
if (status != true)
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{
printf("Bitmap Decompression Failed\n");
}
}
else
{
freerdp_image_flip(data, bitmap->data, width, height, bpp);
}
bitmap->compressed = false;
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bitmap->length = size;
bitmap->bpp = bpp;
}
void wf_Bitmap_SetSurface(rdpContext* context, rdpBitmap* bitmap, boolean primary)
{
wfInfo* wfi = ((wfContext*) context)->wfi;
if (primary)
wfi->drawing = wfi->primary;
else
wfi->drawing = (wfBitmap*) bitmap;
}
/* Pointer Class */
void wf_Pointer_New(rdpContext* context, rdpPointer* pointer)
{
}
void wf_Pointer_Free(rdpContext* context, rdpPointer* pointer)
{
}
void wf_Pointer_Set(rdpContext* context, rdpPointer* pointer)
{
}
/* Graphics Module */
void wf_register_graphics(rdpGraphics* graphics)
{
rdpBitmap bitmap;
rdpPointer pointer;
memset(&bitmap, 0, sizeof(rdpBitmap));
bitmap.size = sizeof(wfBitmap);
bitmap.New = wf_Bitmap_New;
bitmap.Free = wf_Bitmap_Free;
bitmap.Paint = wf_Bitmap_Paint;
bitmap.Decompress = wf_Bitmap_Decompress;
bitmap.SetSurface = wf_Bitmap_SetSurface;
memset(&pointer, 0, sizeof(rdpPointer));
pointer.size = sizeof(wfPointer);
pointer.New = wf_Pointer_New;
pointer.Free = wf_Pointer_Free;
pointer.Set = wf_Pointer_Set;
graphics_register_bitmap(graphics, &bitmap);
graphics_register_pointer(graphics, &pointer);
}