/*
 *  Copyright (c) 2014 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 "test/codec_factory.h"
#include "test/encode_test_driver.h"
#include "test/y4m_video_source.h"
#include "test/yuv_video_source.h"
#include "test/util.h"
#include "third_party/googletest/src/include/gtest/gtest.h"

namespace {

const unsigned int kWidth  = 160;
const unsigned int kHeight = 90;
const unsigned int kFramerate = 50;
const unsigned int kFrames = 10;
const int kBitrate = 500;
const int kCpuUsed = 2;
const double psnr_threshold = 35.0;

typedef struct {
  const char *filename;
  unsigned int input_bit_depth;
  vpx_img_fmt fmt;
  vpx_bit_depth_t bit_depth;
  unsigned int profile;
} TestVideoParam;

const TestVideoParam TestVectors[] = {
  {"park_joy_90p_8_420.y4m", 8, VPX_IMG_FMT_I420, VPX_BITS_8, 0},
  {"park_joy_90p_8_422.y4m", 8, VPX_IMG_FMT_I422, VPX_BITS_8, 1},
  {"park_joy_90p_8_444.y4m", 8, VPX_IMG_FMT_I444, VPX_BITS_8, 1},
  {"park_joy_90p_8_440.yuv", 8, VPX_IMG_FMT_I440, VPX_BITS_8, 1},
#if CONFIG_VP9_HIGHBITDEPTH
  {"park_joy_90p_10_420.y4m", 10, VPX_IMG_FMT_I42016, VPX_BITS_10, 2},
  {"park_joy_90p_10_422.y4m", 10, VPX_IMG_FMT_I42216, VPX_BITS_10, 3},
  {"park_joy_90p_10_444.y4m", 10, VPX_IMG_FMT_I44416, VPX_BITS_10, 3},
  {"park_joy_90p_10_440.yuv", 10, VPX_IMG_FMT_I44016, VPX_BITS_10, 3},
  {"park_joy_90p_12_420.y4m", 12, VPX_IMG_FMT_I42016, VPX_BITS_12, 2},
  {"park_joy_90p_12_422.y4m", 12, VPX_IMG_FMT_I42216, VPX_BITS_12, 3},
  {"park_joy_90p_12_444.y4m", 12, VPX_IMG_FMT_I44416, VPX_BITS_12, 3},
  {"park_joy_90p_12_440.yuv", 12, VPX_IMG_FMT_I44016, VPX_BITS_12, 3},
#endif  // CONFIG_VP9_HIGHBITDEPTH
};

int is_extension_y4m(const char *filename) {
  const char *dot = strrchr(filename, '.');
  if (!dot || dot == filename)
    return 0;
  else
    return !strcmp(dot, ".y4m");
}

class EndToEndTestLarge
    : public ::libvpx_test::EncoderTest,
      public ::libvpx_test::CodecTestWith2Params<libvpx_test::TestMode, \
                                                 TestVideoParam> {
 protected:
  EndToEndTestLarge()
      : EncoderTest(GET_PARAM(0)),
        psnr_(0.0),
        nframes_(0),
        encoding_mode_(GET_PARAM(1)) {
  }

  virtual ~EndToEndTestLarge() {}

  virtual void SetUp() {
    InitializeConfig();
    SetMode(encoding_mode_);
    if (encoding_mode_ != ::libvpx_test::kRealTime) {
      cfg_.g_lag_in_frames = 5;
      cfg_.rc_end_usage = VPX_VBR;
    } else {
      cfg_.g_lag_in_frames = 0;
      cfg_.rc_end_usage = VPX_CBR;
    }
    test_video_param_ = GET_PARAM(2);
  }

  virtual void BeginPassHook(unsigned int) {
    psnr_ = 0.0;
    nframes_ = 0;
  }

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

  virtual void PreEncodeFrameHook(::libvpx_test::VideoSource *video,
                                  ::libvpx_test::Encoder *encoder) {
    if (video->frame() == 1) {
      encoder->Control(VP8E_SET_CPUUSED, kCpuUsed);
      if (encoding_mode_ != ::libvpx_test::kRealTime) {
        encoder->Control(VP8E_SET_ENABLEAUTOALTREF, 1);
        encoder->Control(VP8E_SET_ARNR_MAXFRAMES, 7);
        encoder->Control(VP8E_SET_ARNR_STRENGTH, 5);
        encoder->Control(VP8E_SET_ARNR_TYPE, 3);
      }
    }
  }

  double GetAveragePsnr() const {
    if (nframes_)
      return psnr_ / nframes_;
    return 0.0;
  }

  TestVideoParam test_video_param_;

 private:
  double psnr_;
  unsigned int nframes_;
  libvpx_test::TestMode encoding_mode_;
};

TEST_P(EndToEndTestLarge, EndtoEndPSNRTest) {
  cfg_.rc_target_bitrate = kBitrate;
  cfg_.g_error_resilient = 0;
  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;
  init_flags_ = VPX_CODEC_USE_PSNR;

  libvpx_test::VideoSource *video;
  if (is_extension_y4m(test_video_param_.filename)) {
    video = new libvpx_test::Y4mVideoSource(test_video_param_.filename,
                                            0, kFrames);
  } else {
    video = new libvpx_test::YUVVideoSource(test_video_param_.filename,
                                            test_video_param_.fmt,
                                            kWidth, kHeight,
                                            kFramerate, 1, 0, kFrames);
  }

  ASSERT_NO_FATAL_FAILURE(RunLoop(video));
  const double psnr = GetAveragePsnr();
  EXPECT_GT(psnr, psnr_threshold);
  delete(video);
}

VP9_INSTANTIATE_TEST_CASE(
    EndToEndTestLarge,
    ::testing::Values(::libvpx_test::kTwoPassGood, ::libvpx_test::kOnePassGood),
    ::testing::ValuesIn(TestVectors));

}  // namespace