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/*
SDL surface output
Copyright (C) 2000 Martin Vogt
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published by
the Free Software Foundation.
For more information look at the file COPYRIGHT in this package
*/
#include "imageDeskSDL.h"
#ifdef SDL_WRAPPER
ImageDeskSDL::ImageDeskSDL() {
this->surface=NULL;
this->rect=NULL;
imageMode=_IMAGE_NONE;
lSupport=true;
image=NULL;
}
ImageDeskSDL::~ImageDeskSDL() {
closeImage();
cout << "SDL destry needed"<<endl;
}
int ImageDeskSDL::support() {
return lSupport;
}
void ImageDeskSDL::init(XWindow* xWindow, YUVPicture* pic) {
cout << "ImageDeskSDL::init"<<endl;
this->surface=(SDL_Surface*)xWindow;
this->rect=(SDL_Rect*)pic;
}
int ImageDeskSDL::openImage(int imageMode) {
int w=rect->w;
int h=rect->h;
this->imageMode=imageMode;
/* Create a YV12 image (Y + V + U) */
cout << "CreateYUVOverlay -s"<<imageMode<<" w:"<<w<<" h:"<<h<<endl;
image = SDL_CreateYUVOverlay(w,h,
SDL_YV12_OVERLAY,
surface);
if (image == NULL) {
cout << "error creating image"<<endl;
exit(0);
}
cout << "CreateYUVOverlay -e"<<endl;
return true;
}
int ImageDeskSDL::closeImage() {
if (image != NULL) {
cout << "FreeYUVOverlay -s"<<endl;
SDL_FreeYUVOverlay(image);
// otherwise test of NULL will fail
image = NULL;
cout << "FreeYUVOverlay -e"<<endl;
}
return true;
}
void ImageDeskSDL::ditherImage(YUVPicture* pic) {
int w=pic->getWidth();
int h=pic->getHeight();
int size=w*h+(w*h)/2;
SDL_LockYUVOverlay(image);
memcpy(*((char**)image->pixels),pic->getLuminancePtr(),size);
SDL_UnlockYUVOverlay(image);
}
void ImageDeskSDL::putImage(int w, int h) {
SDL_Rect dest;
dest.x=0;
dest.y=0;
dest.w=rect->w;
dest.h=rect->h;
if (imageMode & _IMAGE_RESIZE) {
dest.w = w;
dest.h = h;
}
if (imageMode & _IMAGE_DOUBLE) {
dest.w*=2;
dest.h*=2;
}
SDL_DisplayYUVOverlay(image,&dest);
}
#endif
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