1 files changed, 189 insertions, 0 deletions
diff --git a/third_party/libaom/source/libaom/test/end_to_end_ssim_test.cc b/third_party/libaom/source/libaom/test/end_to_end_ssim_test.cc
new file mode 100644
index 0000000000..1e638d7b45
--- /dev/null
+++ b/third_party/libaom/source/libaom/test/end_to_end_ssim_test.cc
@@ -0,0 +1,189 @@
+/*
+ * Copyright (c) 2021, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include "aom_ports/mem.h"
+#include "aom_dsp/ssim.h"
+#include "av1/common/blockd.h"
+#include "test/codec_factory.h"
+#include "test/encode_test_driver.h"
+#include "test/util.h"
+#include "test/y4m_video_source.h"
+#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
+
+namespace {
+
+const unsigned int kFrames = 10;
+const unsigned int kCqLevel = 18;
+// List of ssim thresholds for speed settings 0-8 with all intra encoding mode.
+const double kSsimThreshold[] = { 83.4, 83.4, 83.4, 83.3, 83.3,
+                                  83.0, 82.3, 81.1, 81.1 };
+
+typedef struct {
+  const char *filename;
+  unsigned int input_bit_depth;
+  aom_img_fmt fmt;
+  aom_bit_depth_t bit_depth;
+  unsigned int profile;
+} TestVideoParam;
+
+std::ostream &operator<<(std::ostream &os, const TestVideoParam &test_arg) {
+  return os << "TestVideoParam { filename:" << test_arg.filename
+            << " input_bit_depth:" << test_arg.input_bit_depth
+            << " fmt:" << test_arg.fmt << " bit_depth:" << test_arg.bit_depth
+            << " profile:" << test_arg.profile << " }";
+}
+
+const TestVideoParam kTestVectors[] = {
+  { "park_joy_90p_8_420.y4m", 8, AOM_IMG_FMT_I420, AOM_BITS_8, 0 },
+  { "park_joy_90p_8_422.y4m", 8, AOM_IMG_FMT_I422, AOM_BITS_8, 2 },
+  { "park_joy_90p_8_444.y4m", 8, AOM_IMG_FMT_I444, AOM_BITS_8, 1 },
+#if CONFIG_AV1_HIGHBITDEPTH
+  { "park_joy_90p_10_420.y4m", 10, AOM_IMG_FMT_I42016, AOM_BITS_10, 0 },
+  { "park_joy_90p_10_422.y4m", 10, AOM_IMG_FMT_I42216, AOM_BITS_10, 2 },
+  { "park_joy_90p_10_444.y4m", 10, AOM_IMG_FMT_I44416, AOM_BITS_10, 1 },
+  { "park_joy_90p_12_420.y4m", 12, AOM_IMG_FMT_I42016, AOM_BITS_12, 2 },
+  { "park_joy_90p_12_422.y4m", 12, AOM_IMG_FMT_I42216, AOM_BITS_12, 2 },
+  { "park_joy_90p_12_444.y4m", 12, AOM_IMG_FMT_I44416, AOM_BITS_12, 2 },
+#endif
+};
+
+// This class is used to check adherence to given ssim value.
+class EndToEndSSIMTest
+    : public ::libaom_test::CodecTestWith3Params<libaom_test::TestMode,
+                                                 TestVideoParam, int>,
+      public ::libaom_test::EncoderTest {
+ protected:
+  EndToEndSSIMTest()
+      : EncoderTest(GET_PARAM(0)), encoding_mode_(GET_PARAM(1)),
+        test_video_param_(GET_PARAM(2)), cpu_used_(GET_PARAM(3)), nframes_(0),
+        ssim_(0.0) {}
+
+  ~EndToEndSSIMTest() override {}
+
+  void SetUp() override { InitializeConfig(encoding_mode_); }
+
+  void BeginPassHook(unsigned int) override {
+    nframes_ = 0;
+    ssim_ = 0.0;
+  }
+
+  void CalculateFrameLevelSSIM(const aom_image_t *img_src,
+                               const aom_image_t *img_enc,
+                               aom_bit_depth_t bit_depth,
+                               unsigned int input_bit_depth) override {
+    double frame_ssim;
+    double plane_ssim[MAX_MB_PLANE] = { 0.0, 0.0, 0.0 };
+    int crop_widths[PLANE_TYPES];
+    int crop_heights[PLANE_TYPES];
+    crop_widths[PLANE_TYPE_Y] = img_src->d_w;
+    crop_heights[PLANE_TYPE_Y] = img_src->d_h;
+    // Width of UV planes calculated based on chroma_shift values.
+    crop_widths[PLANE_TYPE_UV] =
+        img_src->x_chroma_shift == 1 ? (img_src->w + 1) >> 1 : img_src->w;
+    crop_heights[PLANE_TYPE_UV] =
+        img_src->y_chroma_shift == 1 ? (img_src->h + 1) >> 1 : img_src->h;
+    nframes_++;
+
+#if CONFIG_AV1_HIGHBITDEPTH
+    uint8_t is_hbd = bit_depth > AOM_BITS_8;
+    if (is_hbd) {
+      // HBD ssim calculation.
+      uint8_t shift = bit_depth - input_bit_depth;
+      for (int i = AOM_PLANE_Y; i < MAX_MB_PLANE; ++i) {
+        const int is_uv = i > AOM_PLANE_Y;
+        plane_ssim[i] = aom_highbd_ssim2(
+            CONVERT_TO_BYTEPTR(img_src->planes[i]),
+            CONVERT_TO_BYTEPTR(img_enc->planes[i]),
+            img_src->stride[is_uv] >> is_hbd, img_enc->stride[is_uv] >> is_hbd,
+            crop_widths[is_uv], crop_heights[is_uv], input_bit_depth, shift);
+      }
+      frame_ssim = plane_ssim[AOM_PLANE_Y] * .8 +
+                   .1 * (plane_ssim[AOM_PLANE_U] + plane_ssim[AOM_PLANE_V]);
+      // Accumulate to find sequence level ssim value.
+      ssim_ += frame_ssim;
+      return;
+    }
+#else
+    (void)bit_depth;
+    (void)input_bit_depth;
+#endif  // CONFIG_AV1_HIGHBITDEPTH
+
+    // LBD ssim calculation.
+    for (int i = AOM_PLANE_Y; i < MAX_MB_PLANE; ++i) {
+      const int is_uv = i > AOM_PLANE_Y;
+      plane_ssim[i] = aom_ssim2(img_src->planes[i], img_enc->planes[i],
+                                img_src->stride[is_uv], img_enc->stride[is_uv],
+                                crop_widths[is_uv], crop_heights[is_uv]);
+    }
+    frame_ssim = plane_ssim[AOM_PLANE_Y] * .8 +
+                 .1 * (plane_ssim[AOM_PLANE_U] + plane_ssim[AOM_PLANE_V]);
+    // Accumulate to find sequence level ssim value.
+    ssim_ += frame_ssim;
+  }
+
+  void PreEncodeFrameHook(::libaom_test::VideoSource *video,
+                          ::libaom_test::Encoder *encoder) override {
+    if (video->frame() == 0) {
+      encoder->Control(AV1E_SET_FRAME_PARALLEL_DECODING, 1);
+      encoder->Control(AV1E_SET_TILE_COLUMNS, 4);
+      encoder->Control(AOME_SET_CPUUSED, cpu_used_);
+      encoder->Control(AOME_SET_TUNING, AOM_TUNE_SSIM);
+      encoder->Control(AOME_SET_CQ_LEVEL, kCqLevel);
+    }
+  }
+
+  double GetAverageSsim() const {
+    if (nframes_) return 100 * pow(ssim_ / nframes_, 8.0);
+    return 0.0;
+  }
+
+  double GetSsimThreshold() { return kSsimThreshold[cpu_used_]; }
+
+  void DoTest() {
+    cfg_.g_profile = test_video_param_.profile;
+    cfg_.g_input_bit_depth = test_video_param_.input_bit_depth;
+    cfg_.g_bit_depth = test_video_param_.bit_depth;
+    if (cfg_.g_bit_depth > 8) init_flags_ |= AOM_CODEC_USE_HIGHBITDEPTH;
+
+    std::unique_ptr<libaom_test::VideoSource> video(
+        new libaom_test::Y4mVideoSource(test_video_param_.filename, 0,
+                                        kFrames));
+    ASSERT_TRUE(video.get() != NULL);
+    ASSERT_NO_FATAL_FAILURE(RunLoop(video.get()));
+    const double ssim = GetAverageSsim();
+    EXPECT_GT(ssim, GetSsimThreshold())
+        << "encoding mode = " << encoding_mode_ << ", cpu used = " << cpu_used_;
+  }
+
+ private:
+  const libaom_test::TestMode encoding_mode_;
+  const TestVideoParam test_video_param_;
+  const int cpu_used_;
+  unsigned int nframes_;
+  double ssim_;
+};
+
+class EndToEndSSIMTestLarge : public EndToEndSSIMTest {};
+
+TEST_P(EndToEndSSIMTestLarge, EndtoEndSSIMTest) { DoTest(); }
+
+TEST_P(EndToEndSSIMTest, EndtoEndSSIMTest) { DoTest(); }
+
+AV1_INSTANTIATE_TEST_SUITE(EndToEndSSIMTestLarge,
+                           ::testing::Values(::libaom_test::kAllIntra),
+                           ::testing::ValuesIn(kTestVectors),
+                           ::testing::Values(2, 4, 6, 8));  // cpu_used
+
+AV1_INSTANTIATE_TEST_SUITE(EndToEndSSIMTest,
+                           ::testing::Values(::libaom_test::kAllIntra),
+                           ::testing::Values(kTestVectors[0]),  // 420
+                           ::testing::Values(6));               // cpu_used
+}  // namespace