text: /*
   *  Copyright (c) 2016 The WebM 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 <memory>
  #include <string>
  
  #include "test/codec_factory.h"
  #include "test/decode_test_driver.h"
  #include "test/ivf_video_source.h"
  #include "test/test_vectors.h"
  #include "test/util.h"
  
  namespace {
  
  const unsigned int kNumFrames = 19;
  
  class DecodeSvcTest : public ::libvpx_test::DecoderTest,
                        public ::libvpx_test::CodecTestWithParam<const char *> {
   protected:
    DecodeSvcTest() : DecoderTest(GET_PARAM(::libvpx_test::kCodecFactoryParam)) {}
    virtual ~DecodeSvcTest() {}
  
    virtual void PreDecodeFrameHook(
        const libvpx_test::CompressedVideoSource &video,
        libvpx_test::Decoder *decoder) {
      if (video.frame_number() == 0)
        decoder->Control(VP9_DECODE_SVC_SPATIAL_LAYER, spatial_layer_);
    }
  
    virtual void DecompressedFrameHook(const vpx_image_t &img,
                                       const unsigned int frame_number) {
      ASSERT_EQ(img.d_w, width_);
      ASSERT_EQ(img.d_h, height_);
      total_frames_ = frame_number;
    }
  
    int spatial_layer_;
    unsigned int width_;
    unsigned int height_;
    unsigned int total_frames_;
  };
  
  // SVC test vector is 1280x720, with 3 spatial layers, and 20 frames.
  
  // Decode the SVC test vector, which has 3 spatial layers, and decode up to
  // spatial layer 0. Verify the resolution of each decoded frame and the total
  // number of frames decoded. This results in 1/4x1/4 resolution (320x180).
  TEST_P(DecodeSvcTest, DecodeSvcTestUpToSpatialLayer0) {
    const std::string filename = GET_PARAM(1);
    std::unique_ptr<libvpx_test::CompressedVideoSource> video;
    video.reset(new libvpx_test::IVFVideoSource(filename));
    ASSERT_TRUE(video.get() != NULL);
    video->Init();
    total_frames_ = 0;
    spatial_layer_ = 0;
    width_ = 320;
    height_ = 180;
    ASSERT_NO_FATAL_FAILURE(RunLoop(video.get()));
    ASSERT_EQ(total_frames_, kNumFrames);
  }
  
  // Decode the SVC test vector, which has 3 spatial layers, and decode up to
  // spatial layer 1. Verify the resolution of each decoded frame and the total
  // number of frames decoded. This results in 1/2x1/2 resolution (640x360).
  TEST_P(DecodeSvcTest, DecodeSvcTestUpToSpatialLayer1) {
    const std::string filename = GET_PARAM(1);
    std::unique_ptr<libvpx_test::CompressedVideoSource> video;
    video.reset(new libvpx_test::IVFVideoSource(filename));
    ASSERT_TRUE(video.get() != NULL);
    video->Init();
    total_frames_ = 0;
    spatial_layer_ = 1;
    width_ = 640;
    height_ = 360;
    ASSERT_NO_FATAL_FAILURE(RunLoop(video.get()));
    ASSERT_EQ(total_frames_, kNumFrames);
  }
  
  // Decode the SVC test vector, which has 3 spatial layers, and decode up to
  // spatial layer 2. Verify the resolution of each decoded frame and the total
  // number of frames decoded. This results in the full resolution (1280x720).
  TEST_P(DecodeSvcTest, DecodeSvcTestUpToSpatialLayer2) {
    const std::string filename = GET_PARAM(1);
    std::unique_ptr<libvpx_test::CompressedVideoSource> video;
    video.reset(new libvpx_test::IVFVideoSource(filename));
    ASSERT_TRUE(video.get() != NULL);
    video->Init();
    total_frames_ = 0;
    spatial_layer_ = 2;
    width_ = 1280;
    height_ = 720;
    ASSERT_NO_FATAL_FAILURE(RunLoop(video.get()));
    ASSERT_EQ(total_frames_, kNumFrames);
  }
  
  // Decode the SVC test vector, which has 3 spatial layers, and decode up to
  // spatial layer 10. Verify the resolution of each decoded frame and the total
  // number of frames decoded. This is beyond the number of spatial layers, so
  // the decoding should result in the full resolution (1280x720).
  TEST_P(DecodeSvcTest, DecodeSvcTestUpToSpatialLayer10) {
    const std::string filename = GET_PARAM(1);
    std::unique_ptr<libvpx_test::CompressedVideoSource> video;
    video.reset(new libvpx_test::IVFVideoSource(filename));
    ASSERT_TRUE(video.get() != NULL);
    video->Init();
    total_frames_ = 0;
    spatial_layer_ = 10;
    width_ = 1280;
    height_ = 720;
    ASSERT_NO_FATAL_FAILURE(RunLoop(video.get()));
    ASSERT_EQ(total_frames_, kNumFrames);
  }
  
  VP9_INSTANTIATE_TEST_SUITE(
      DecodeSvcTest, ::testing::ValuesIn(libvpx_test::kVP9TestVectorsSvc,
                                         libvpx_test::kVP9TestVectorsSvc +
                                             libvpx_test::kNumVP9TestVectorsSvc));
  }  // namespace
  