EJ_BIND_FUNCTION(EJBindingCanvas,createImageData, ctx, argc, argv) {
if( argc < 2 ) { return NULL; }
float
sw = JSValueToNumberFast(ctx, argv[0]),
sh = JSValueToNumberFast(ctx, argv[1]);
GLubyte * pixels = (GLubyte *)calloc( sw * sh * 4, sizeof(GLubyte) );
EJImageData * imageData = new EJImageData(sw ,sh ,pixels);
imageData->autorelease();
// Create the JS object
EJBindingImageData* tempData = new EJBindingImageData();
JSClassRef imageDataClass = EJApp::instance()->getJSClassForClass((EJBindingBase*)tempData);
delete tempData;
JSObjectRef obj = JSObjectMake( ctx, imageDataClass, NULL );
JSValueProtect(ctx, obj);
// Create the native instance
EJBindingImageData * jsImageData =new EJBindingImageData(ctx,obj,imageData);
// Attach the native instance to the js object
JSObjectSetPrivate( obj, (void *)jsImageData );
JSValueUnprotect(ctx, obj);
return obj;
}
EJImageData* EJCanvasContext::getImageData(float sx, float sy, float sw, float sh)
{
flushBuffers();
GLubyte * pixels = (GLubyte*)malloc( (size_t)sw * (size_t)sh * 4 * sizeof(GLubyte));
glReadPixels((GLint)sx, (GLint)sy, (GLsizei)sw, (GLsizei)sh, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
EJImageData* imageData = new EJImageData((int)sw, (int)sh, pixels);
imageData->autorelease();
return imageData;
}
