Remove C++11 dependency from ResampleEffect.
[movit] / test_util.cpp
1 #include <assert.h>
2 #include <math.h>
3 #include <stdio.h>
4 #include <algorithm>
5 #include <epoxy/gl.h>
6 #include <gtest/gtest.h>
7 #include <gtest/gtest-message.h>
8
9 #include "flat_input.h"
10 #include "init.h"
11 #include "resource_pool.h"
12 #include "test_util.h"
13 #include "util.h"
14
15 using namespace std;
16
17 namespace movit {
18
19 class Input;
20
21 namespace {
22
23 // Not thread-safe, but this isn't a big problem for testing.
24 ResourcePool *get_static_pool()
25 {
26         static ResourcePool *resource_pool = NULL;
27         if (!resource_pool) {
28                 resource_pool = new ResourcePool();
29         }
30         return resource_pool;
31 }
32
33 // Flip upside-down to compensate for different origin.
34 template<class T>
35 void vertical_flip(T *data, unsigned width, unsigned height)
36 {
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]);
41                 }
42         }
43 }
44
45 }  // namespace
46
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()),
51           width(width),
52           height(height),
53           framebuffer_format(framebuffer_format),
54           output_added(false),
55           finalized(false)
56 {
57         CHECK(init_movit(".", MOVIT_DEBUG_OFF));
58
59         if (data != NULL) {
60                 add_input(data, pixel_format, color_space, gamma_curve);
61         }
62 }
63
64 EffectChainTester::~EffectChainTester()
65 {
66 }
67
68 Input *EffectChainTester::add_input(const float *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve, int input_width, int input_height)
69 {
70         ImageFormat format;
71         format.color_space = color_space;
72         format.gamma_curve = gamma_curve;
73
74         if (input_width == -1) {
75                 input_width = width;
76         }
77         if (input_height == -1) {
78                 input_height = height;
79         }
80
81         FlatInput *input = new FlatInput(format, pixel_format, GL_FLOAT, input_width, input_height);
82         input->set_pixel_data(data);
83         chain.add_input(input);
84         return input;
85 }
86
87 Input *EffectChainTester::add_input(const unsigned char *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve, int input_width, int input_height)
88 {
89         ImageFormat format;
90         format.color_space = color_space;
91         format.gamma_curve = gamma_curve;
92
93         if (input_width == -1) {
94                 input_width = width;
95         }
96         if (input_height == -1) {
97                 input_height = height;
98         }
99
100         FlatInput *input = new FlatInput(format, pixel_format, GL_UNSIGNED_BYTE, input_width, input_height);
101         input->set_pixel_data(data);
102         chain.add_input(input);
103         return input;
104 }
105
106 void EffectChainTester::run(float *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
107 {
108         internal_run<float>(out_data, NULL, NULL, NULL, GL_FLOAT, format, color_space, gamma_curve, alpha_format);
109 }
110
111 void EffectChainTester::run(float *out_data, float *out_data2, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
112 {
113         internal_run<float>(out_data, out_data2, NULL, NULL, GL_FLOAT, format, color_space, gamma_curve, alpha_format);
114 }
115
116 void EffectChainTester::run(float *out_data, float *out_data2, float *out_data3, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
117 {
118         internal_run<float>(out_data, out_data2, out_data3, NULL, GL_FLOAT, format, color_space, gamma_curve, alpha_format);
119 }
120
121 void EffectChainTester::run(float *out_data, float *out_data2, float *out_data3, float *out_data4, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
122 {
123         internal_run(out_data, out_data2, out_data3, out_data4, GL_FLOAT, format, color_space, gamma_curve, alpha_format);
124 }
125
126 void EffectChainTester::run(unsigned char *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
127 {
128         internal_run<unsigned char>(out_data, NULL, NULL, NULL, GL_UNSIGNED_BYTE, format, color_space, gamma_curve, alpha_format);
129 }
130
131 void EffectChainTester::run(unsigned char *out_data, unsigned char *out_data2, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
132 {
133         internal_run<unsigned char>(out_data, out_data2, NULL, NULL, GL_UNSIGNED_BYTE, format, color_space, gamma_curve, alpha_format);
134 }
135
136 void EffectChainTester::run(unsigned char *out_data, unsigned char *out_data2, unsigned char *out_data3, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
137 {
138         internal_run<unsigned char>(out_data, out_data2, out_data3, NULL, GL_UNSIGNED_BYTE, format, color_space, gamma_curve, alpha_format);
139 }
140
141 void EffectChainTester::run(unsigned char *out_data, unsigned char *out_data2, unsigned char *out_data3, unsigned char *out_data4, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
142 {
143         internal_run(out_data, out_data2, out_data3, out_data4, GL_UNSIGNED_BYTE, format, color_space, gamma_curve, alpha_format);
144 }
145
146 void EffectChainTester::run(uint16_t *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
147 {
148         internal_run<uint16_t>(out_data, NULL, NULL, NULL, GL_UNSIGNED_SHORT, format, color_space, gamma_curve, alpha_format);
149 }
150
151 void EffectChainTester::run_10_10_10_2(uint32_t *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
152 {
153         internal_run<uint32_t>(out_data, NULL, NULL, NULL, GL_UNSIGNED_INT_2_10_10_10_REV, format, color_space, gamma_curve, alpha_format);
154 }
155
156 template<class T>
157 void EffectChainTester::internal_run(T *out_data, T *out_data2, T *out_data3, T *out_data4, GLenum internal_format, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
158 {
159         if (!finalized) {
160                 finalize_chain(color_space, gamma_curve, alpha_format);
161         }
162
163         GLuint type;
164         if (framebuffer_format == GL_RGBA8) {
165                 type = GL_UNSIGNED_BYTE;
166         } else if (framebuffer_format == GL_RGBA16) {
167                 type = GL_UNSIGNED_SHORT;
168         } else if (framebuffer_format == GL_RGBA16F || framebuffer_format == GL_RGBA32F) {
169                 type = GL_FLOAT;
170         } else if (framebuffer_format == GL_RGB10_A2) {
171                 type = GL_UNSIGNED_INT_2_10_10_10_REV;
172         } else {
173                 // Add more here as needed.
174                 assert(false);
175         }
176
177         unsigned num_outputs;
178         if (out_data4 != NULL) {
179                 num_outputs = 4;
180         } else if (out_data3 != NULL) {
181                 num_outputs = 3;
182         } else if (out_data2 != NULL) {
183                 num_outputs = 2;
184         } else {
185                 num_outputs = 1;
186         }
187
188         GLuint fbo, texnum[4];
189
190         glGenTextures(num_outputs, texnum);
191         check_error();
192         for (unsigned i = 0; i < num_outputs; ++i) {
193                 glBindTexture(GL_TEXTURE_2D, texnum[i]);
194                 check_error();
195                 glTexImage2D(GL_TEXTURE_2D, 0, framebuffer_format, width, height, 0, GL_RGBA, type, NULL);
196                 check_error();
197         }
198
199         glGenFramebuffers(1, &fbo);
200         check_error();
201         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
202         check_error();
203         for (unsigned i = 0; i < num_outputs; ++i) {
204                 glFramebufferTexture2D(
205                         GL_FRAMEBUFFER,
206                         GL_COLOR_ATTACHMENT0 + i,
207                         GL_TEXTURE_2D,
208                         texnum[i],
209                         0);
210                 check_error();
211         }
212
213         GLenum bufs[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT3 };
214         glDrawBuffers(num_outputs, bufs);
215
216         chain.render_to_fbo(fbo, width, height);
217
218         T *data[4] = { out_data, out_data2, out_data3, out_data4 };
219
220         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
221         check_error();
222         for (unsigned i = 0; i < num_outputs; ++i) {
223                 T *ptr = data[i];
224                 glReadBuffer(GL_COLOR_ATTACHMENT0 + i);
225                 if (!epoxy_is_desktop_gl() && (format == GL_RED || format == GL_BLUE || format == GL_ALPHA)) {
226                         // GLES will only read GL_RGBA.
227                         T *temp = new T[width * height * 4];
228                         glReadPixels(0, 0, width, height, GL_RGBA, internal_format, temp);
229                         check_error();
230                         if (format == GL_ALPHA) {
231                                 for (unsigned i = 0; i < width * height; ++i) {
232                                         ptr[i] = temp[i * 4 + 3];
233                                 }
234                         } else if (format == GL_BLUE) {
235                                 for (unsigned i = 0; i < width * height; ++i) {
236                                         ptr[i] = temp[i * 4 + 2];
237                                 }
238                         } else {
239                                 for (unsigned i = 0; i < width * height; ++i) {
240                                         ptr[i] = temp[i * 4];
241                                 }
242                         }
243                         delete[] temp;
244                 } else {
245                         glReadPixels(0, 0, width, height, format, internal_format, ptr);
246                         check_error();
247                 }
248
249                 if (format == GL_RGBA && (type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_SHORT || type == GL_FLOAT)) {
250                         vertical_flip(ptr, width * 4, height);
251                 } else {
252                         vertical_flip(ptr, width, height);
253                 }
254         }
255
256         glDeleteFramebuffers(1, &fbo);
257         check_error();
258         glDeleteTextures(num_outputs, texnum);
259         check_error();
260 }
261
262 void EffectChainTester::add_output(const ImageFormat &format, OutputAlphaFormat alpha_format)
263 {
264         chain.add_output(format, alpha_format);
265         output_added = true;
266 }
267
268 void EffectChainTester::add_ycbcr_output(const ImageFormat &format, OutputAlphaFormat alpha_format, const YCbCrFormat &ycbcr_format, YCbCrOutputSplitting output_splitting, GLenum type)
269 {
270         chain.add_ycbcr_output(format, alpha_format, ycbcr_format, output_splitting, type);
271         output_added = true;
272 }
273
274 void EffectChainTester::finalize_chain(Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
275 {
276         assert(!finalized);
277         if (!output_added) {
278                 ImageFormat image_format;
279                 image_format.color_space = color_space;
280                 image_format.gamma_curve = gamma_curve;
281                 chain.add_output(image_format, alpha_format);
282                 output_added = true;
283         }
284         chain.finalize();
285         finalized = true;
286 }
287
288 void expect_equal(const float *ref, const float *result, unsigned width, unsigned height, float largest_difference_limit, float rms_limit)
289 {
290         float largest_difference = -1.0f;
291         float squared_difference = 0.0f;
292         int largest_diff_x = -1, largest_diff_y = -1;
293
294         for (unsigned y = 0; y < height; ++y) {
295                 for (unsigned x = 0; x < width; ++x) {
296                         float diff = ref[y * width + x] - result[y * width + x];
297                         if (fabs(diff) > largest_difference) {
298                                 largest_difference = fabs(diff);
299                                 largest_diff_x = x;
300                                 largest_diff_y = y;
301                         }
302                         squared_difference += diff * diff;
303                 }
304         }
305
306         EXPECT_LT(largest_difference, largest_difference_limit)
307                 << "Largest difference is in x=" << largest_diff_x << ", y=" << largest_diff_y << ":\n"
308                 << "Reference: " << ref[largest_diff_y * width + largest_diff_x] << "\n"
309                 << "Result:    " << result[largest_diff_y * width + largest_diff_x];
310
311         float rms = sqrt(squared_difference) / (width * height);
312         EXPECT_LT(rms, rms_limit);
313
314         if (largest_difference >= largest_difference_limit || rms >= rms_limit) {
315                 fprintf(stderr, "Dumping matrices for easier debugging, since at least one test failed.\n");
316
317                 fprintf(stderr, "Reference:\n");
318                 for (unsigned y = 0; y < height; ++y) {
319                         for (unsigned x = 0; x < width; ++x) {
320                                 fprintf(stderr, "%7.4f ", ref[y * width + x]);
321                         }
322                         fprintf(stderr, "\n");
323                 }
324
325                 fprintf(stderr, "\nResult:\n");
326                 for (unsigned y = 0; y < height; ++y) {
327                         for (unsigned x = 0; x < width; ++x) {
328                                 fprintf(stderr, "%7.4f ", result[y * width + x]);
329                         }
330                         fprintf(stderr, "\n");
331                 }
332         }
333 }
334
335 void expect_equal(const unsigned char *ref, const unsigned char *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
336 {
337         assert(width > 0);
338         assert(height > 0);
339
340         float *ref_float = new float[width * height];
341         float *result_float = new float[width * height];
342
343         for (unsigned y = 0; y < height; ++y) {
344                 for (unsigned x = 0; x < width; ++x) {
345                         ref_float[y * width + x] = ref[y * width + x];
346                         result_float[y * width + x] = result[y * width + x];
347                 }
348         }
349
350         expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
351
352         delete[] ref_float;
353         delete[] result_float;
354 }
355
356 void expect_equal(const uint16_t *ref, const uint16_t *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
357 {
358         assert(width > 0);
359         assert(height > 0);
360
361         float *ref_float = new float[width * height];
362         float *result_float = new float[width * height];
363
364         for (unsigned y = 0; y < height; ++y) {
365                 for (unsigned x = 0; x < width; ++x) {
366                         ref_float[y * width + x] = ref[y * width + x];
367                         result_float[y * width + x] = result[y * width + x];
368                 }
369         }
370
371         expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
372
373         delete[] ref_float;
374         delete[] result_float;
375 }
376
377 void expect_equal(const int *ref, const int *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
378 {
379         assert(width > 0);
380         assert(height > 0);
381
382         float *ref_float = new float[width * height];
383         float *result_float = new float[width * height];
384
385         for (unsigned y = 0; y < height; ++y) {
386                 for (unsigned x = 0; x < width; ++x) {
387                         ref_float[y * width + x] = ref[y * width + x];
388                         result_float[y * width + x] = result[y * width + x];
389                 }
390         }
391
392         expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
393
394         delete[] ref_float;
395         delete[] result_float;
396 }
397
398 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)
399 {
400         double squared_difference = 0.0;
401         for (unsigned i = 0; i < num_values; ++i) {
402                 double absolute_error = fabs(expected[i] - result[i]);
403                 squared_difference += absolute_error * absolute_error;
404                 EXPECT_LT(absolute_error, absolute_error_limit);
405
406                 if (expected[i] > 0.0) {
407                         double relative_error = fabs(absolute_error / expected[i]);
408
409                         EXPECT_LT(relative_error, relative_error_limit);
410                 }
411                 if (i < num_values - 1) {
412                         double delta = expected[i + 1] - expected[i];
413                         double local_relative_error = fabs(absolute_error / delta);
414                         EXPECT_LT(local_relative_error, local_relative_error_limit);
415                 }
416         }
417         double rms = sqrt(squared_difference) / num_values;
418         EXPECT_LT(rms, rms_limit);
419 }
420
421 double srgb_to_linear(double x)
422 {
423         // From the Wikipedia article on sRGB.
424         if (x < 0.04045) {
425                 return x / 12.92;
426         } else {
427                 return pow((x + 0.055) / 1.055, 2.4);
428         }
429 }
430
431 double linear_to_srgb(double x)
432 {
433         // From the Wikipedia article on sRGB.
434         if (x < 0.0031308) {
435                 return 12.92 * x;
436         } else {
437                 return 1.055 * pow(x, 1.0 / 2.4) - 0.055;
438         }
439 }
440
441 }  // namespace movit