#include <math.h>

#include "swfdec_internal.h"

unsigned int transform_color(unsigned int in, double mult[4], double add[4])
{
	int r, g, b, a;

	r = SWF_COLOR_R(in);
	g = SWF_COLOR_G(in);
	b = SWF_COLOR_B(in);
	a = SWF_COLOR_A(in);

	//SWF_DEBUG(0,"in rgba %d,%d,%d,%d\n",r,g,b,a);

	r = rint((r*mult[0] + add[0]));
	g = rint((g*mult[1] + add[1]));
	b = rint((b*mult[2] + add[2]));
	a = rint((a*mult[3] + add[3]));

	r = CLAMP(r,0,255);
	g = CLAMP(g,0,255);
	b = CLAMP(b,0,255);
	a = CLAMP(a,0,255);

	//SWF_DEBUG(0,"out rgba %d,%d,%d,%d\n",r,g,b,a);

	return SWF_COLOR_COMBINE(r,g,b,a);
}

void swf_config_colorspace(SwfdecDecoder *s)
{
	switch(s->colorspace){
	case SWF_COLORSPACE_RGB565:
		s->stride = s->width * 2;
		s->bytespp = 2;
		s->callback = art_rgb565_svp_alpha_callback;
		s->compose_callback = art_rgb565_svp_alpha_callback;
		break;
	case SWF_COLORSPACE_RGB888:
	default:
		s->stride = s->width * 3;
		s->bytespp = 3;
		s->callback = art_rgb_svp_alpha_callback;
		s->compose_callback = art_rgb_svp_alpha_compose_callback;
		break;
	}
}

int tag_func_set_background_color(SwfdecDecoder *s)
{
	ArtIRect rect;

	s->bg_color = get_color(&s->b);

	rect.x0 = 0;
	rect.y0 = 0;
	rect.x1 = s->width;
	rect.y1 = s->height;

	swf_invalidate_irect(s,&rect);

	return SWF_OK;
}