In ResampleEffect, precompute the Lanczos function into a table.

[movit] / padding_effect_test.cpp

diff --git a/padding_effect_test.cpp b/padding_effect_test.cpp
index ecd0d1eac999abb3b52b51f8b938bbf718e8c3c4..a1a36b9c29e3f6ff22c9dcc3fbd0e40431cf9ef9 100644 (file)
--- a/padding_effect_test.cpp
+++ b/padding_effect_test.cpp
@@ -1,9 +1,17 @@
-// Unit tests for AlphaMultiplicationEffect.
+// Unit tests for PaddingEffect.
 
-#include "test_util.h"
+#include <epoxy/gl.h>
+#include <stddef.h>
+
+#include "effect_chain.h"
 #include "flat_input.h"
-#include "padding_effect.h"
 #include "gtest/gtest.h"
+#include "image_format.h"
+#include "padding_effect.h"
+#include "test_util.h"
+#include "util.h"
+
+namespace movit {
 
 TEST(PaddingEffectTest, SimpleCenter) {
        float data[2 * 2] = {
@@ -34,7 +42,7 @@ TEST(PaddingEffectTest, SimpleCenter) {
        CHECK(effect->set_float("left", 1.0f));
        CHECK(effect->set_float("top", 1.0f));
 
-       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_PREMULTIPLIED);
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
        expect_equal(expected_data, out_data, 4, 4);
 }
 
@@ -67,10 +75,10 @@ TEST(PaddingEffectTest, WhiteBorderColor) {
        CHECK(effect->set_float("left", 1.0f));
        CHECK(effect->set_float("top", 1.0f));
 
-       RGBATriplet border_color(1.0f, 1.0f, 1.0f, 1.0f);
+       RGBATuple border_color(1.0f, 1.0f, 1.0f, 1.0f);
        CHECK(effect->set_vec4("border_color", (float *)&border_color));
 
-       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_PREMULTIPLIED);
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
        expect_equal(expected_data, out_data, 4, 4);
 }
 
@@ -100,10 +108,10 @@ TEST(PaddingEffectTest, BorderColorIsInLinearGamma) {
        CHECK(effect->set_float("left", 0.0f));
        CHECK(effect->set_float("top", 0.0f));
 
-       RGBATriplet border_color(0.2f, 0.4f, 0.6f, 0.8f);  // Same as the pixel in data[].
+       RGBATuple border_color(0.2f, 0.4f, 0.6f, 0.8f);  // Same as the pixel in data[].
        CHECK(effect->set_vec4("border_color", (float *)&border_color));
 
-       tester.run(out_data, GL_RGBA, COLORSPACE_REC_601_625, GAMMA_REC_601, OUTPUT_ALPHA_POSTMULTIPLIED);
+       tester.run(out_data, GL_RGBA, COLORSPACE_REC_601_625, GAMMA_REC_601, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
        expect_equal(expected_data, out_data, 4, 2);
 }
 
@@ -134,7 +142,7 @@ TEST(PaddingEffectTest, DifferentXAndYOffset) {
        CHECK(effect->set_float("left", 2.0f));
        CHECK(effect->set_float("top", 1.0f));
 
-       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_PREMULTIPLIED);
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
        expect_equal(expected_data, out_data, 3, 3);
 }
 
@@ -142,10 +150,8 @@ TEST(PaddingEffectTest, NonIntegerOffset) {
        float data[4 * 1] = {
                0.25f, 0.50f, 0.75f, 1.0f,
        };
-       // Note that the first pixel is completely blank, since the cutoff goes
-       // at the immediate left of the texel.
        float expected_data[5 * 2] = {
-               0.0f, 0.4375f, 0.6875f, 0.9375f, 0.0f,
+               0.1875f, 0.4375f, 0.6875f, 0.9375f, 0.25f,
                0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
        };
        float out_data[5 * 2];
@@ -166,7 +172,7 @@ TEST(PaddingEffectTest, NonIntegerOffset) {
        CHECK(effect->set_float("left", 0.25f));
        CHECK(effect->set_float("top", 0.0f));
 
-       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_PREMULTIPLIED);
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
        expect_equal(expected_data, out_data, 5, 2);
 }
 
@@ -196,6 +202,112 @@ TEST(PaddingEffectTest, Crop) {
        CHECK(effect->set_float("left", -1.0f));
        CHECK(effect->set_float("top", -1.0f));
 
-       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_PREMULTIPLIED);
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
        expect_equal(expected_data, out_data, 1, 1);
 }
+
+TEST(PaddingEffectTest, AlphaIsCorrectEvenWithNonLinearInputsAndOutputs) {
+       float data[2 * 1] = {
+               1.0f,
+               0.8f,
+       };
+       float expected_data[4 * 4] = {
+               1.0f, 1.0f, 1.0f, 0.5f,
+               1.0f, 1.0f, 1.0f, 1.0f,
+               0.8f, 0.8f, 0.8f, 1.0f,
+               1.0f, 1.0f, 1.0f, 0.5f,
+       };
+       float out_data[4 * 4];
+
+       EffectChainTester tester(NULL, 1, 4);
+
+       ImageFormat format;
+       format.color_space = COLORSPACE_REC_601_625;
+       format.gamma_curve = GAMMA_REC_709;
+
+       FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 1, 2);
+       input->set_pixel_data(data);
+       tester.get_chain()->add_input(input);
+
+       Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
+       CHECK(effect->set_int("width", 1));
+       CHECK(effect->set_int("height", 4));
+       CHECK(effect->set_float("left", 0.0f));
+       CHECK(effect->set_float("top", 1.0f));
+
+       RGBATuple border_color(1.0f, 1.0f, 1.0f, 0.5f);
+       CHECK(effect->set_vec4("border_color", (float *)&border_color));
+
+       tester.run(out_data, GL_RGBA, COLORSPACE_REC_601_625, GAMMA_REC_709, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
+       expect_equal(expected_data, out_data, 4, 4);
+}
+
+TEST(PaddingEffectTest, BorderOffsetTopAndBottom) {
+       float data[2 * 2] = {
+               1.0f, 0.5f,
+               0.8f, 0.3f,
+       };
+       float expected_data[4 * 4] = {
+               0.0f, 0.000f, 0.000f, 0.0f,
+               0.0f, 0.750f, 0.375f, 0.0f,
+               0.0f, 0.800f, 0.300f, 0.0f,
+               0.0f, 0.200f, 0.075f, 0.0f,  // Repeated pixels, 25% opacity.
+       };
+       float out_data[4 * 4];
+
+        EffectChainTester tester(NULL, 4, 4);
+
+       ImageFormat format;
+       format.color_space = COLORSPACE_sRGB;
+       format.gamma_curve = GAMMA_LINEAR;
+
+       FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 2, 2);
+       input->set_pixel_data(data);
+       tester.get_chain()->add_input(input);
+
+       Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
+       CHECK(effect->set_int("width", 4));
+       CHECK(effect->set_int("height", 4));
+       CHECK(effect->set_float("left", 1.0f));
+       CHECK(effect->set_float("top", 1.0f));
+       CHECK(effect->set_float("border_offset_top", 0.25f));
+       CHECK(effect->set_float("border_offset_bottom", 0.25f));
+
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
+       expect_equal(expected_data, out_data, 4, 4);
+}
+
+TEST(PaddingEffectTest, BorderOffsetLeftAndRight) {
+       float data[3 * 2] = {
+               1.0f, 0.5f, 0.6f,
+               0.8f, 0.3f, 0.2f,
+       };
+       float expected_data[4 * 2] = {
+               0.750f, 0.5f, 0.3f, 0.0f,
+               0.600f, 0.3f, 0.1f, 0.0f
+       };
+       float out_data[4 * 2];
+
+        EffectChainTester tester(NULL, 4, 2);
+
+       ImageFormat format;
+       format.color_space = COLORSPACE_sRGB;
+       format.gamma_curve = GAMMA_LINEAR;
+
+       FlatInput *input = new FlatInput(format, FORMAT_GRAYSCALE, GL_FLOAT, 3, 2);
+       input->set_pixel_data(data);
+       tester.get_chain()->add_input(input);
+
+       Effect *effect = tester.get_chain()->add_effect(new PaddingEffect());
+       CHECK(effect->set_int("width", 4));
+       CHECK(effect->set_int("height", 2));
+       CHECK(effect->set_float("left", 0.0f));
+       CHECK(effect->set_float("top", 0.0f));
+       CHECK(effect->set_float("border_offset_left", 0.25f));
+       CHECK(effect->set_float("border_offset_right", -0.5f));
+
+       tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR, OUTPUT_ALPHA_FORMAT_PREMULTIPLIED);
+       expect_equal(expected_data, out_data, 4, 2);
+}
+
+}  // namespace movit