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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.
*/
#include "third_party/googletest/src/include/gtest/gtest.h"
#include "./vpx_config.h"
#include "test/codec_factory.h"
#include "test/encode_test_driver.h"
#include "test/i420_video_source.h"
#include "test/util.h"
#include "test/y4m_video_source.h"
namespace {
const int kMaxPsnr = 100;
class LosslessTest
: public ::libvpx_test::EncoderTest,
public ::libvpx_test::CodecTestWithParam<libvpx_test::TestMode> {
protected:
LosslessTest()
: EncoderTest(GET_PARAM(0)), psnr_(kMaxPsnr), nframes_(0),
encoding_mode_(GET_PARAM(1)) {}
~LosslessTest() override = default;
void SetUp() override {
InitializeConfig();
SetMode(encoding_mode_);
}
void PreEncodeFrameHook(::libvpx_test::VideoSource *video,
::libvpx_test::Encoder *encoder) override {
if (video->frame() == 0) {
// 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);
}
}
}
void BeginPassHook(unsigned int /*pass*/) override {
psnr_ = kMaxPsnr;
nframes_ = 0;
}
void PSNRPktHook(const vpx_codec_cx_pkt_t *pkt) override {
if (pkt->data.psnr.psnr[0] < psnr_) psnr_ = pkt->data.psnr.psnr[0];
}
double GetMinPsnr() const { return psnr_; }
private:
double psnr_;
unsigned int nframes_;
libvpx_test::TestMode encoding_mode_;
};
TEST_P(LosslessTest, TestLossLessEncoding) {
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
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);
}
TEST_P(LosslessTest, TestLossLessEncoding444) {
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);
}
TEST_P(LosslessTest, TestLossLessEncodingCtrl) {
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);
}
VP9_INSTANTIATE_TEST_SUITE(LosslessTest,
::testing::Values(::libvpx_test::kRealTime,
::libvpx_test::kOnePassGood,
::libvpx_test::kTwoPassGood));
} // namespace
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