www.pudn.com > Flirt.zip > imageext.c

 
#include  
#include  
 
#include  
#include  
 
#include "flirt-debug.h" 
 
void 
savePNG(char* filename, ddImage* image, int width, int height) 
{ 
	FILE* f = fopen(filename, "wb"); 
	int i; 
	png_bytep* row_pointers; 
	char* imagebytes = ddImage_getData(image); 
	int rowstride = ddImage_getRowstride(image); 
	 
	png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL, png_voidp_NULL, png_voidp_NULL); 
	 
	png_infop info_ptr = png_create_info_struct(png_ptr); 
	 
	if ( setjmp(png_jmpbuf(png_ptr)) ) 
	{ 
		png_destroy_write_struct(&png_ptr, &info_ptr); 
		fclose(f); 
		return; 
	} 
	 
	png_init_io(png_ptr, f); 
	png_set_write_status_fn(png_ptr, png_write_status_ptr_NULL); 
	 
	png_set_IHDR(png_ptr, info_ptr, width, height, 
				 8, PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE, 
				 PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); 
	 
	row_pointers = png_malloc(png_ptr, height * sizeof(png_bytep)); 
	 
	for ( i = 0; i < height; ++i ) 
		row_pointers[i] = (unsigned char*)imagebytes + i * rowstride; 
	 
	png_set_rows(png_ptr, info_ptr, row_pointers); 
	 
	png_set_swap_alpha(png_ptr); 
 
	// XXX - should be endian check 
#ifndef DD_PLATFORM_MAC_OS_X 
	png_set_swap_alpha(png_ptr); 
	png_set_bgr(png_ptr); 
#endif 
	 
	png_write_png(png_ptr, info_ptr, 0, NULL); 
	 
	png_destroy_info_struct(png_ptr, &info_ptr); 
	png_destroy_write_struct(&png_ptr, &info_ptr); 
	 
	fclose(f); 
} 
 
 
struct imageObject 
{ 
	ddActionObject parent; 
	ddDrawClip* clip; 
	int width; 
	int height; 
}; 
 
typedef struct imageObject ImageObject; 
 
ddActionValue 
Image_constructor(ddActionObject* classref, ddActionContext* context, int nargs) 
{ 
	ddActionValue value = ddActionContext_popValue(context); 
	ddActionObject* object = ddActionValue_getObjectValue(value); 
	ImageObject* image; 
	 
	if ( !ddActionObject_isKindOfClass(object, ddActionMovieClipClass) ) 
		return ddNullValue; 
	 
	image = malloc(sizeof(struct imageObject)); 
	 
	ddActionObject_init((ddActionObject*)image); 
	 
	ddActionObject_setClass((ddActionObject*)image, (ddActionClass*)ddActionObject_getPrototype(classref)); 
	 
	image->clip = ddActionMovieClip_getDrawClip((ddActionMovieClip*)ddActionObject_retain(object)); 
	image->width = 0; 
	image->height = 0; 
	 
	return dd_newActionValue_object((ddActionObject*)image); 
} 
 
 
ddActionValue 
Image_setWidth(ddActionObject* object, ddActionContext* context, int nargs) 
{ 
	ddActionValue val = ddActionContext_popValue(context); 
	int width = ddActionValue_getIntValue(val); 
	 
	ImageObject* image = (ImageObject*)object; 
	 
	image->width = width; 
	 
	return ddNullValue; 
} 
 
ddActionValue 
Image_setHeight(ddActionObject* object, ddActionContext* context, int nargs) 
{ 
	ddActionValue val = ddActionContext_popValue(context); 
	int height = ddActionValue_getIntValue(val); 
	 
	ImageObject* image = (ImageObject*)object; 
	 
	image->height = height; 
	 
	return ddNullValue; 
} 
 
ddActionValue 
Image_render(ddActionObject* object, ddActionContext* context, int nargs) 
{ 
	ddActionValue val = ddActionContext_popValue(context); 
	char* filename = ddActionValue_getStringValue(context, val); 
	ImageObject* image = (ImageObject*)object; 
	ddImage* bitmap = dd_newImage(image->width, image->height); 
	 
	if ( filename == NULL || image->width == 0 || image->height == 0 ) 
		return ddFalseValue; 
	 
	ddDrawClip_renderInImage(image->clip, bitmap, ddPlayer_getBackgroundColor(ddContext_getPlayer(context))); 
	 
	savePNG(filename, bitmap, image->width, image->height); 
	 
	return ddTrueValue; 
} 
 
 
void 
setupImageClass(ddPlayer* player) 
{ 
	ddActionClass* class = ddPlayer_addClass(player, ddActionObjectClass, "Image", Image_constructor, 1); 
	 
	ddActionClass_addNativeMethod(class, "render", Image_render, 1); 
	ddActionClass_addNativeMethod(class, "setWidth", Image_setWidth, 1); 
	ddActionClass_addNativeMethod(class, "setHeight", Image_setHeight, 1); 
}