third_party/aom/test/monochrome_test.cc

   1 /*
   2  * Copyright (c) 2016, Alliance for Open Media. All rights reserved
   3  *
   4  * This source code is subject to the terms of the BSD 2 Clause License and
   5  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
   6  * was not distributed with this source code in the LICENSE file, you can
   7  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
   8  * Media Patent License 1.0 was not distributed with this source code in the
   9  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  10  */
  11
  12 #include <climits>
  13 #include <vector>
  14 #include "third_party/googletest/src/googletest/include/gtest/gtest.h"
  15 #include "test/codec_factory.h"
  16 #include "test/encode_test_driver.h"
  17 #include "test/i420_video_source.h"
  18 #include "test/video_source.h"
  19 #include "test/util.h"
  20
  21 namespace {
  22
  23 class MonochromeTest
  24     : public ::libaom_test::CodecTestWithParam<libaom_test::TestMode>,
  25       public ::libaom_test::EncoderTest {
  26  protected:
  27   MonochromeTest() : EncoderTest(GET_PARAM(0)), frame0_psnr_y_(0.) {}
  28
  29   virtual ~MonochromeTest() {}
  30
  31   virtual void SetUp() {
  32     InitializeConfig();
  33     SetMode(GET_PARAM(1));
  34   }
  35
  36   virtual void DecompressedFrameHook(const aom_image_t &img,
  37                                      aom_codec_pts_t pts) {
  38     (void)pts;
  39
  40     // Get value of top-left corner pixel of U plane
  41     int chroma_value = img.planes[AOM_PLANE_U][0];
  42
  43     bool is_chroma_constant =
  44         ComparePlaneToValue(img, AOM_PLANE_U, chroma_value) &&
  45         ComparePlaneToValue(img, AOM_PLANE_V, chroma_value);
  46
  47     // Chroma planes should be constant
  48     EXPECT_TRUE(is_chroma_constant);
  49
  50     // Monochrome flag on image should be set
  51     EXPECT_EQ(img.monochrome, 1);
  52
  53     chroma_value_list_.push_back(chroma_value);
  54   }
  55
  56   // Returns true if all pixels on the plane are equal to value, and returns
  57   // false otherwise.
  58   bool ComparePlaneToValue(const aom_image_t &img, const int plane,
  59                            const int value) {
  60     const int w = aom_img_plane_width(&img, plane);
  61     const int h = aom_img_plane_height(&img, plane);
  62     const uint8_t *const buf = img.planes[plane];
  63     const int stride = img.stride[plane];
  64
  65     for (int r = 0; r < h; ++r) {
  66       for (int c = 0; c < w; ++c) {
  67         if (buf[r * stride + c] != value) return false;
  68       }
  69     }
  70     return true;
  71   }
  72
  73   virtual void PSNRPktHook(const aom_codec_cx_pkt_t *pkt) {
  74     // Check that the initial Y PSNR value is 'high enough', and check that
  75     // subsequent Y PSNR values are 'close' to this initial value.
  76     if (frame0_psnr_y_ == 0.) {
  77       frame0_psnr_y_ = pkt->data.psnr.psnr[1];
  78       EXPECT_GT(frame0_psnr_y_, 29.);
  79     }
  80     EXPECT_NEAR(pkt->data.psnr.psnr[1], frame0_psnr_y_, 2.5);
  81   }
  82
  83   std::vector<int> chroma_value_list_;
  84   double frame0_psnr_y_;
  85 };
  86
  87 TEST_P(MonochromeTest, TestMonochromeEncoding) {
  88   ::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
  89                                        30, 1, 0, 5);
  90
  91   init_flags_ = AOM_CODEC_USE_PSNR;
  92
  93   cfg_.g_w = 352;
  94   cfg_.g_h = 288;
  95
  96   cfg_.rc_buf_initial_sz = 500;
  97   cfg_.rc_buf_optimal_sz = 600;
  98   cfg_.rc_buf_sz = 1000;
  99   cfg_.rc_min_quantizer = 2;
 100   cfg_.rc_max_quantizer = 56;
 101   cfg_.rc_undershoot_pct = 50;
 102   cfg_.rc_overshoot_pct = 50;
 103   cfg_.rc_end_usage = AOM_CBR;
 104   cfg_.kf_mode = AOM_KF_AUTO;
 105   cfg_.g_lag_in_frames = 1;
 106   cfg_.kf_min_dist = cfg_.kf_max_dist = 3000;
 107   // Enable dropped frames.
 108   cfg_.rc_dropframe_thresh = 1;
 109   // Disable error_resilience mode.
 110   cfg_.g_error_resilient = 0;
 111   // Run at low bitrate.
 112   cfg_.rc_target_bitrate = 40;
 113   // Set monochrome encoding flag
 114   cfg_.monochrome = 1;
 115
 116   ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
 117
 118   // Check that the chroma planes are equal across all frames
 119   std::vector<int>::const_iterator iter = chroma_value_list_.begin();
 120   int initial_chroma_value = *iter;
 121   for (; iter != chroma_value_list_.end(); ++iter) {
 122     // Check that all decoded frames have the same constant chroma planes.
 123     EXPECT_EQ(*iter, initial_chroma_value);
 124   }
 125 }
 126
 127 AV1_INSTANTIATE_TEST_CASE(MonochromeTest,
 128                           ::testing::Values(::libaom_test::kTwoPassGood));
 129
 130 }  // namespace