text: /*
   *  Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
   *
   *  Use of this source code is governed by a BSD-style license
   *  that can be found in the LICENSE file in the root of the source
   *  tree. An additional intellectual property rights grant can be found
   *  in the file PATENTS.  All contributing project authors may
   *  be found in the AUTHORS file in the root of the source tree.
   */
  
  #include "modules/video_coding/utility/vp9_uncompressed_header_parser.h"
  
  #include "test/gmock.h"
  #include "test/gtest.h"
  
  namespace webrtc {
  namespace vp9 {
  using ::testing::AllOf;
  using ::testing::ElementsAre;
  using ::testing::Eq;
  using ::testing::Field;
  using ::testing::Optional;
  
  TEST(Vp9UncompressedHeaderParserTest, FrameWithSegmentation) {
    // Uncompressed header from a frame generated with libvpx.
    // Encoded QVGA frame (SL0 of a VGA frame) that includes a segmentation.
    const uint8_t kHeader[] = {
        0x87, 0x01, 0x00, 0x00, 0x02, 0x7e, 0x01, 0xdf, 0x02, 0x7f, 0x01, 0xdf,
        0xc6, 0x87, 0x04, 0x83, 0x83, 0x2e, 0x46, 0x60, 0x20, 0x38, 0x0c, 0x06,
        0x03, 0xcd, 0x80, 0xc0, 0x60, 0x9f, 0xc5, 0x46, 0x00, 0x00, 0x00, 0x00,
        0x2e, 0x73, 0xb7, 0xee, 0x22, 0x06, 0x81, 0x82, 0xd4, 0xef, 0xc3, 0x58,
        0x1f, 0x12, 0xd2, 0x7b, 0x28, 0x1f, 0x80, 0xfc, 0x07, 0xe0, 0x00, 0x00};
  
    absl::optional<Vp9UncompressedHeader> frame_info =
        ParseUncompressedVp9Header(kHeader);
    ASSERT_TRUE(frame_info.has_value());
  
    EXPECT_FALSE(frame_info->is_keyframe);
    EXPECT_TRUE(frame_info->error_resilient);
    EXPECT_TRUE(frame_info->show_frame);
    EXPECT_FALSE(frame_info->show_existing_frame);
    EXPECT_EQ(frame_info->base_qp, 185);
    EXPECT_EQ(frame_info->frame_width, 320);
    EXPECT_EQ(frame_info->frame_height, 240);
    EXPECT_EQ(frame_info->render_width, 640);
    EXPECT_EQ(frame_info->render_height, 480);
    EXPECT_TRUE(frame_info->allow_high_precision_mv);
    EXPECT_EQ(frame_info->frame_context_idx, 0u);
    EXPECT_EQ(frame_info->interpolation_filter,
              Vp9InterpolationFilter::kSwitchable);
    EXPECT_EQ(frame_info->is_lossless, false);
    EXPECT_EQ(frame_info->profile, 0);
    EXPECT_THAT(frame_info->reference_buffers, ElementsAre(0, 0, 0));
    EXPECT_THAT(frame_info->reference_buffers_sign_bias, 0b0000);
    EXPECT_EQ(frame_info->updated_buffers, 0b10000000);
    EXPECT_EQ(frame_info->tile_cols_log2, 0u);
    EXPECT_EQ(frame_info->tile_rows_log2, 0u);
    EXPECT_EQ(frame_info->render_size_offset_bits, 64u);
    EXPECT_EQ(frame_info->compressed_header_size, 23u);
    EXPECT_EQ(frame_info->uncompressed_header_size, 37u);
  
    EXPECT_TRUE(frame_info->segmentation_enabled);
    EXPECT_FALSE(frame_info->segmentation_is_delta);
    EXPECT_THAT(frame_info->segmentation_pred_prob,
                Optional(ElementsAre(205, 1, 1)));
    EXPECT_THAT(frame_info->segmentation_tree_probs,
                Optional(ElementsAre(255, 255, 128, 1, 128, 128, 128)));
    EXPECT_THAT(frame_info->segmentation_features[1][kVp9SegLvlAlt_Q], Eq(-63));
    EXPECT_THAT(frame_info->segmentation_features[2][kVp9SegLvlAlt_Q], Eq(-81));
  }
  
  TEST(Vp9UncompressedHeaderParserTest, SegmentationWithDefaultPredProbs) {
    const uint8_t kHeader[] = {0x90, 0x49, 0x83, 0x42, 0x80, 0x2e,
                               0x30, 0x0,  0xb0, 0x0,  0x37, 0xff,
                               0xd,  0x0,  0x0,  0x0,  0x0,  0x0};
    absl::optional<Vp9UncompressedHeader> frame_info =
        ParseUncompressedVp9Header(kHeader);
    ASSERT_TRUE(frame_info.has_value());
    EXPECT_THAT(frame_info->segmentation_pred_prob,
                Optional(ElementsAre(255, 255, 255)));
  }
  
  TEST(Vp9UncompressedHeaderParserTest, SegmentationWithSkipLevel) {
    const uint8_t kHeader[] = {0x90, 0x49, 0x83, 0x42, 0x80, 0x2e, 0x30, 0x00,
                               0xb0, 0x00, 0x37, 0xff, 0x0d, 0x00, 0x02, 0x10,
                               0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
    absl::optional<Vp9UncompressedHeader> frame_info =
        ParseUncompressedVp9Header(kHeader);
    ASSERT_TRUE(frame_info.has_value());
    EXPECT_THAT(frame_info->segmentation_features[0][kVp9SegLvlSkip], Eq(1));
  }
  
  }  // namespace vp9
  }  // namespace webrtc
  