6 #include <gtest/gtest.h>
7 #include <gtest/gtest-message.h>
9 #include "flat_input.h"
11 #include "resource_pool.h"
12 #include "test_util.h"
23 // Not thread-safe, but this isn't a big problem for testing.
24 ResourcePool *get_static_pool()
26 static ResourcePool *resource_pool = NULL;
28 resource_pool = new ResourcePool();
33 // Flip upside-down to compensate for different origin.
35 void vertical_flip(T *data, unsigned width, unsigned height)
37 for (unsigned y = 0; y < height / 2; ++y) {
38 unsigned flip_y = height - y - 1;
39 for (unsigned x = 0; x < width; ++x) {
40 swap(data[y * width + x], data[flip_y * width + x]);
47 EffectChainTester::EffectChainTester(const float *data, unsigned width, unsigned height,
48 MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve,
49 GLenum framebuffer_format)
50 : chain(width, height, get_static_pool()), width(width), height(height), finalized(false)
52 CHECK(init_movit(".", MOVIT_DEBUG_OFF));
55 add_input(data, pixel_format, color_space, gamma_curve);
58 glGenTextures(1, &texnum);
60 glBindTexture(GL_TEXTURE_2D, texnum);
62 glTexImage2D(GL_TEXTURE_2D, 0, framebuffer_format, width, height, 0, GL_RGBA, GL_FLOAT, NULL);
65 glGenFramebuffers(1, &fbo);
67 glBindFramebuffer(GL_FRAMEBUFFER, fbo);
69 glFramebufferTexture2D(
76 glBindFramebuffer(GL_FRAMEBUFFER, 0);
80 EffectChainTester::~EffectChainTester()
82 glDeleteFramebuffers(1, &fbo);
84 glDeleteTextures(1, &texnum);
88 Input *EffectChainTester::add_input(const float *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve, int input_width, int input_height)
91 format.color_space = color_space;
92 format.gamma_curve = gamma_curve;
94 if (input_width == -1) {
97 if (input_height == -1) {
98 input_height = height;
101 FlatInput *input = new FlatInput(format, pixel_format, GL_FLOAT, input_width, input_height);
102 input->set_pixel_data(data);
103 chain.add_input(input);
107 Input *EffectChainTester::add_input(const unsigned char *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve, int input_width, int input_height)
110 format.color_space = color_space;
111 format.gamma_curve = gamma_curve;
113 if (input_width == -1) {
116 if (input_height == -1) {
117 input_height = height;
120 FlatInput *input = new FlatInput(format, pixel_format, GL_UNSIGNED_BYTE, input_width, input_height);
121 input->set_pixel_data(data);
122 chain.add_input(input);
126 void EffectChainTester::run(float *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
129 finalize_chain(color_space, gamma_curve, alpha_format);
132 chain.render_to_fbo(fbo, width, height);
134 glBindFramebuffer(GL_FRAMEBUFFER, fbo);
136 if (!epoxy_is_desktop_gl() && format == GL_RED) {
137 // GLES will only read GL_RGBA.
138 float *temp = new float[width * height * 4];
139 glReadPixels(0, 0, width, height, GL_RGBA, GL_FLOAT, temp);
141 for (int i = 0; i < width * height; ++i) {
142 out_data[i] = temp[i * 4];
146 glReadPixels(0, 0, width, height, format, GL_FLOAT, out_data);
150 if (format == GL_RGBA) {
154 vertical_flip(out_data, width, height);
157 void EffectChainTester::run(unsigned char *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
160 finalize_chain(color_space, gamma_curve, alpha_format);
163 chain.render_to_fbo(fbo, width, height);
165 glBindFramebuffer(GL_FRAMEBUFFER, fbo);
167 if (!epoxy_is_desktop_gl() && format == GL_RED) {
168 // GLES will only read GL_RGBA.
169 unsigned char *temp = new unsigned char[width * height * 4];
170 glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, temp);
172 for (int i = 0; i < width * height; ++i) {
173 out_data[i] = temp[i * 4];
177 glReadPixels(0, 0, width, height, format, GL_UNSIGNED_BYTE, out_data);
181 if (format == GL_RGBA) {
185 vertical_flip(out_data, width, height);
188 void EffectChainTester::finalize_chain(Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
191 ImageFormat image_format;
192 image_format.color_space = color_space;
193 image_format.gamma_curve = gamma_curve;
194 chain.add_output(image_format, alpha_format);
199 void expect_equal(const float *ref, const float *result, unsigned width, unsigned height, float largest_difference_limit, float rms_limit)
201 float largest_difference = -1.0f;
202 float squared_difference = 0.0f;
203 int largest_diff_x = -1, largest_diff_y = -1;
205 for (unsigned y = 0; y < height; ++y) {
206 for (unsigned x = 0; x < width; ++x) {
207 float diff = ref[y * width + x] - result[y * width + x];
208 if (fabs(diff) > largest_difference) {
209 largest_difference = fabs(diff);
213 squared_difference += diff * diff;
217 EXPECT_LT(largest_difference, largest_difference_limit)
218 << "Largest difference is in x=" << largest_diff_x << ", y=" << largest_diff_y << ":\n"
219 << "Reference: " << ref[largest_diff_y * width + largest_diff_x] << "\n"
220 << "Result: " << result[largest_diff_y * width + largest_diff_x];
222 float rms = sqrt(squared_difference) / (width * height);
223 EXPECT_LT(rms, rms_limit);
225 if (largest_difference >= largest_difference_limit || rms >= rms_limit) {
226 fprintf(stderr, "Dumping matrices for easier debugging, since at least one test failed.\n");
228 fprintf(stderr, "Reference:\n");
229 for (unsigned y = 0; y < height; ++y) {
230 for (unsigned x = 0; x < width; ++x) {
231 fprintf(stderr, "%7.4f ", ref[y * width + x]);
233 fprintf(stderr, "\n");
236 fprintf(stderr, "\nResult:\n");
237 for (unsigned y = 0; y < height; ++y) {
238 for (unsigned x = 0; x < width; ++x) {
239 fprintf(stderr, "%7.4f ", result[y * width + x]);
241 fprintf(stderr, "\n");
246 void expect_equal(const unsigned char *ref, const unsigned char *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
251 float *ref_float = new float[width * height];
252 float *result_float = new float[width * height];
254 for (unsigned y = 0; y < height; ++y) {
255 for (unsigned x = 0; x < width; ++x) {
256 ref_float[y * width + x] = ref[y * width + x];
257 result_float[y * width + x] = result[y * width + x];
261 expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
264 delete[] result_float;
267 void test_accuracy(const float *expected, const float *result, unsigned num_values, double absolute_error_limit, double relative_error_limit, double local_relative_error_limit, double rms_limit)
269 double squared_difference = 0.0;
270 for (unsigned i = 0; i < num_values; ++i) {
271 double absolute_error = fabs(expected[i] - result[i]);
272 squared_difference += absolute_error * absolute_error;
273 EXPECT_LT(absolute_error, absolute_error_limit);
275 if (expected[i] > 0.0) {
276 double relative_error = fabs(absolute_error / expected[i]);
278 EXPECT_LT(relative_error, relative_error_limit);
280 if (i < num_values - 1) {
281 double delta = expected[i + 1] - expected[i];
282 double local_relative_error = fabs(absolute_error / delta);
283 EXPECT_LT(local_relative_error, local_relative_error_limit);
286 double rms = sqrt(squared_difference) / num_values;
287 EXPECT_LT(rms, rms_limit);