vp9_lossless_test.cc 3.83 KB
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/*
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 *  Copyright (c) 2013 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.
 */
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#include "third_party/googletest/src/include/gtest/gtest.h"
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#include "./vpx_config.h"
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#include "test/codec_factory.h"
#include "test/encode_test_driver.h"
#include "test/i420_video_source.h"
#include "test/util.h"
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#include "test/y4m_video_source.h"
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namespace {

const int kMaxPsnr = 100;

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class LosslessTest
    : public ::libvpx_test::EncoderTest,
      public ::libvpx_test::CodecTestWithParam<libvpx_test::TestMode> {
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 protected:
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  LosslessTest()
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      : EncoderTest(GET_PARAM(0)), psnr_(kMaxPsnr), nframes_(0),
        encoding_mode_(GET_PARAM(1)) {}
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  virtual ~LosslessTest() {}
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  virtual void SetUp() {
    InitializeConfig();
    SetMode(encoding_mode_);
  }

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  virtual void PreEncodeFrameHook(::libvpx_test::VideoSource *video,
                                  ::libvpx_test::Encoder *encoder) {
    if (video->frame() == 1) {
      // Only call Control if quantizer > 0 to verify that using quantizer
      // alone will activate lossless
      if (cfg_.rc_max_quantizer > 0 || cfg_.rc_min_quantizer > 0) {
        encoder->Control(VP9E_SET_LOSSLESS, 1);
      }
    }
  }

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  virtual void BeginPassHook(unsigned int /*pass*/) {
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    psnr_ = kMaxPsnr;
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    nframes_ = 0;
  }

  virtual void PSNRPktHook(const vpx_codec_cx_pkt_t *pkt) {
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    if (pkt->data.psnr.psnr[0] < psnr_) psnr_ = pkt->data.psnr.psnr[0];
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  }

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  double GetMinPsnr() const { return psnr_; }
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 private:
  double psnr_;
  unsigned int nframes_;
  libvpx_test::TestMode encoding_mode_;
};

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TEST_P(LosslessTest, TestLossLessEncoding) {
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  const vpx_rational timebase = { 33333333, 1000000000 };
  cfg_.g_timebase = timebase;
  cfg_.rc_target_bitrate = 2000;
  cfg_.g_lag_in_frames = 25;
  cfg_.rc_min_quantizer = 0;
  cfg_.rc_max_quantizer = 0;

  init_flags_ = VPX_CODEC_USE_PSNR;

  // intentionally changed the dimension for better testing coverage
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  libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
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                                     timebase.den, timebase.num, 0, 10);
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  ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
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  const double psnr_lossless = GetMinPsnr();
  EXPECT_GE(psnr_lossless, kMaxPsnr);
}
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TEST_P(LosslessTest, TestLossLessEncoding444) {
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  libvpx_test::Y4mVideoSource video("rush_hour_444.y4m", 0, 10);

  cfg_.g_profile = 1;
  cfg_.g_timebase = video.timebase();
  cfg_.rc_target_bitrate = 2000;
  cfg_.g_lag_in_frames = 25;
  cfg_.rc_min_quantizer = 0;
  cfg_.rc_max_quantizer = 0;

  init_flags_ = VPX_CODEC_USE_PSNR;

  ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
  const double psnr_lossless = GetMinPsnr();
  EXPECT_GE(psnr_lossless, kMaxPsnr);
}

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TEST_P(LosslessTest, TestLossLessEncodingCtrl) {
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  const vpx_rational timebase = { 33333333, 1000000000 };
  cfg_.g_timebase = timebase;
  cfg_.rc_target_bitrate = 2000;
  cfg_.g_lag_in_frames = 25;
  // Intentionally set Q > 0, to make sure control can be used to activate
  // lossless
  cfg_.rc_min_quantizer = 10;
  cfg_.rc_max_quantizer = 20;

  init_flags_ = VPX_CODEC_USE_PSNR;

  libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
                                     timebase.den, timebase.num, 0, 10);
  ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
  const double psnr_lossless = GetMinPsnr();
  EXPECT_GE(psnr_lossless, kMaxPsnr);
}

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VP9_INSTANTIATE_TEST_CASE(LosslessTest,
                          ::testing::Values(::libvpx_test::kRealTime,
                                            ::libvpx_test::kOnePassGood,
                                            ::libvpx_test::kTwoPassGood));
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}  // namespace