X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=test_util.cpp;h=05eac31451f833687eff9b552abd098dbfcbbcc6;hp=ada84dca8832f24513c40a05d58fae7f6de97869;hb=34776d3ed2565ee834405e575bf3bfc7f7933e36;hpb=d2050acb601e0d16bb33b1c1e7cf443dce2d3c93

diff --git a/test_util.cpp b/test_util.cpp
index ada84dc..05eac31 100644
--- a/test_util.cpp
+++ b/test_util.cpp
@@ -46,8 +46,14 @@ void vertical_flip(T *data, unsigned width, unsigned height)
 
 EffectChainTester::EffectChainTester(const float *data, unsigned width, unsigned height,
                                      MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve,
-                                     GLenum framebuffer_format)
-	: chain(width, height, get_static_pool()), width(width), height(height), framebuffer_format(framebuffer_format), output_added(false), finalized(false)
+                                     GLenum framebuffer_format,
+                                     GLenum intermediate_format)
+	: chain(width, height, get_static_pool(), intermediate_format),
+	  width(width),
+	  height(height),
+	  framebuffer_format(framebuffer_format),
+	  output_added(false),
+	  finalized(false)
 {
 	CHECK(init_movit(".", MOVIT_DEBUG_OFF));
 
@@ -345,4 +351,24 @@ void test_accuracy(const float *expected, const float *result, unsigned num_valu
 	EXPECT_LT(rms, rms_limit);
 }
 
+double srgb_to_linear(double x)
+{
+	// From the Wikipedia article on sRGB.
+	if (x < 0.04045) {
+		return x / 12.92;
+	} else {
+		return pow((x + 0.055) / 1.055, 2.4);
+	}
+}
+
+double linear_to_srgb(double x)
+{
+	// From the Wikipedia article on sRGB.
+	if (x < 0.0031308) {
+		return 12.92 * x;
+	} else {
+		return 1.055 * pow(x, 1.0 / 2.4) - 0.055;
+	}
+}
+
 }  // namespace movit