git.sesse.net Git - movit/blob - test_util.cpp

   1 #include <assert.h>
   2 #include <gtest/gtest-message.h>
   3 #include <math.h>
   4 #include <stdio.h>
   5 #include <algorithm>
   6
   7 #include "flat_input.h"
   8 #include "gtest/gtest.h"
   9 #include "init.h"
  10 #include "test_util.h"
  11 #include "util.h"
  12
  13 class Input;
  14
  15 namespace {
  16
  17 // Flip upside-down to compensate for different origin.
  18 template<class T>
  19 void vertical_flip(T *data, unsigned width, unsigned height)
  20 {
  21         for (unsigned y = 0; y < height / 2; ++y) {
  22                 unsigned flip_y = height - y - 1;
  23                 for (unsigned x = 0; x < width; ++x) {
  24                         std::swap(data[y * width + x], data[flip_y * width + x]);
  25                 }
  26         }
  27 }
  28
  29 }  // namespace
  30
  31 EffectChainTester::EffectChainTester(const float *data, unsigned width, unsigned height,
  32                                      MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve,
  33                                      GLenum framebuffer_format)
  34         : chain(width, height), width(width), height(height), finalized(false)
  35 {
  36         init_movit(".", MOVIT_DEBUG_ON);
  37
  38         if (data != NULL) {
  39                 add_input(data, pixel_format, color_space, gamma_curve);
  40         }
  41
  42         glGenTextures(1, &texnum);
  43         check_error();
  44         glBindTexture(GL_TEXTURE_2D, texnum);
  45         check_error();
  46         glTexImage2D(GL_TEXTURE_2D, 0, framebuffer_format, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  47         check_error();
  48
  49         glGenFramebuffers(1, &fbo);
  50         check_error();
  51         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
  52         check_error();
  53         glFramebufferTexture2D(
  54                 GL_FRAMEBUFFER,
  55                 GL_COLOR_ATTACHMENT0,
  56                 GL_TEXTURE_2D,
  57                 texnum,
  58                 0);
  59         check_error();
  60         glBindFramebuffer(GL_FRAMEBUFFER, 0);
  61         check_error();
  62 }
  63
  64 EffectChainTester::~EffectChainTester()
  65 {
  66         glDeleteFramebuffers(1, &fbo);
  67         check_error();
  68         glDeleteTextures(1, &texnum);
  69         check_error();
  70 }
  71
  72 Input *EffectChainTester::add_input(const float *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve)
  73 {
  74         ImageFormat format;
  75         format.color_space = color_space;
  76         format.gamma_curve = gamma_curve;
  77
  78         FlatInput *input = new FlatInput(format, pixel_format, GL_FLOAT, width, height);
  79         input->set_pixel_data(data);
  80         chain.add_input(input);
  81         return input;
  82 }
  83
  84 Input *EffectChainTester::add_input(const unsigned char *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve)
  85 {
  86         ImageFormat format;
  87         format.color_space = color_space;
  88         format.gamma_curve = gamma_curve;
  89
  90         FlatInput *input = new FlatInput(format, pixel_format, GL_UNSIGNED_BYTE, width, height);
  91         input->set_pixel_data(data);
  92         chain.add_input(input);
  93         return input;
  94 }
  95
  96 void EffectChainTester::run(float *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
  97 {
  98         if (!finalized) {
  99                 finalize_chain(color_space, gamma_curve, alpha_format);
 100         }
 101
 102         chain.render_to_fbo(fbo, width, height);
 103
 104         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 105         glReadPixels(0, 0, width, height, format, GL_FLOAT, out_data);
 106
 107         if (format == GL_RGBA) {
 108                 width *= 4;
 109         }
 110
 111         vertical_flip(out_data, width, height);
 112 }
 113
 114 void EffectChainTester::run(unsigned char *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 115 {
 116         if (!finalized) {
 117                 finalize_chain(color_space, gamma_curve, alpha_format);
 118         }
 119
 120         chain.render_to_fbo(fbo, width, height);
 121
 122         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 123         glReadPixels(0, 0, width, height, format, GL_UNSIGNED_BYTE, out_data);
 124
 125         if (format == GL_RGBA) {
 126                 width *= 4;
 127         }
 128
 129         vertical_flip(out_data, width, height);
 130 }
 131
 132 void EffectChainTester::finalize_chain(Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 133 {
 134         assert(!finalized);
 135         ImageFormat image_format;
 136         image_format.color_space = color_space;
 137         image_format.gamma_curve = gamma_curve;
 138         chain.add_output(image_format, alpha_format);
 139         chain.finalize();
 140         finalized = true;
 141 }
 142
 143 void expect_equal(const float *ref, const float *result, unsigned width, unsigned height, float largest_difference_limit, float rms_limit)
 144 {
 145         float largest_difference = -1.0f;
 146         float squared_difference = 0.0f;
 147         int largest_diff_x = -1, largest_diff_y = -1;
 148
 149         for (unsigned y = 0; y < height; ++y) {
 150                 for (unsigned x = 0; x < width; ++x) {
 151                         float diff = ref[y * width + x] - result[y * width + x];
 152                         if (fabs(diff) > largest_difference) {
 153                                 largest_difference = fabs(diff);
 154                                 largest_diff_x = x;
 155                                 largest_diff_y = y;
 156                         }
 157                         squared_difference += diff * diff;
 158                 }
 159         }
 160
 161         EXPECT_LT(largest_difference, largest_difference_limit)
 162                 << "Largest difference is in x=" << largest_diff_x << ", y=" << largest_diff_y << ":\n"
 163                 << "Reference: " << ref[largest_diff_y * width + largest_diff_x] << "\n"
 164                 << "Result:    " << result[largest_diff_y * width + largest_diff_x];
 165
 166         float rms = sqrt(squared_difference) / (width * height);
 167         EXPECT_LT(rms, rms_limit);
 168
 169         if (largest_difference >= largest_difference_limit || rms >= rms_limit) {
 170                 fprintf(stderr, "Dumping matrices for easier debugging, since at least one test failed.\n");
 171
 172                 fprintf(stderr, "Reference:\n");
 173                 for (unsigned y = 0; y < height; ++y) {
 174                         for (unsigned x = 0; x < width; ++x) {
 175                                 fprintf(stderr, "%7.4f ", ref[y * width + x]);
 176                         }
 177                         fprintf(stderr, "\n");
 178                 }
 179
 180                 fprintf(stderr, "\nResult:\n");
 181                 for (unsigned y = 0; y < height; ++y) {
 182                         for (unsigned x = 0; x < width; ++x) {
 183                                 fprintf(stderr, "%7.4f ", result[y * width + x]);
 184                         }
 185                         fprintf(stderr, "\n");
 186                 }
 187         }
 188 }
 189
 190 void expect_equal(const unsigned char *ref, const unsigned char *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
 191 {
 192         assert(width > 0);
 193         assert(height > 0);
 194
 195         float *ref_float = new float[width * height];
 196         float *result_float = new float[width * height];
 197
 198         for (unsigned y = 0; y < height; ++y) {
 199                 for (unsigned x = 0; x < width; ++x) {
 200                         ref_float[y * width + x] = ref[y * width + x];
 201                         result_float[y * width + x] = result[y * width + x];
 202                 }
 203         }
 204
 205         expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
 206
 207         delete[] ref_float;
 208         delete[] result_float;
 209 }