1 /*
2 * Copyright (c) 2013 The WebM project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include "third_party/googletest/src/include/gtest/gtest.h"
12
13 #include "./vpx_config.h"
14 #include "test/codec_factory.h"
15 #include "test/encode_test_driver.h"
16 #include "test/i420_video_source.h"
17 #include "test/util.h"
18 #include "test/y4m_video_source.h"
19
20 namespace {
21
22 const int kMaxPsnr = 100;
23
24 class LosslessTest
25 : public ::libvpx_test::EncoderTest,
26 public ::libvpx_test::CodecTestWithParam<libvpx_test::TestMode> {
27 protected:
LosslessTest()28 LosslessTest()
29 : EncoderTest(GET_PARAM(0)), psnr_(kMaxPsnr), nframes_(0),
30 encoding_mode_(GET_PARAM(1)) {}
31
~LosslessTest()32 virtual ~LosslessTest() {}
33
SetUp()34 virtual void SetUp() {
35 InitializeConfig();
36 SetMode(encoding_mode_);
37 }
38
PreEncodeFrameHook(::libvpx_test::VideoSource * video,::libvpx_test::Encoder * encoder)39 virtual void PreEncodeFrameHook(::libvpx_test::VideoSource *video,
40 ::libvpx_test::Encoder *encoder) {
41 if (video->frame() == 1) {
42 // Only call Control if quantizer > 0 to verify that using quantizer
43 // alone will activate lossless
44 if (cfg_.rc_max_quantizer > 0 || cfg_.rc_min_quantizer > 0) {
45 encoder->Control(VP9E_SET_LOSSLESS, 1);
46 }
47 }
48 }
49
BeginPassHook(unsigned int)50 virtual void BeginPassHook(unsigned int /*pass*/) {
51 psnr_ = kMaxPsnr;
52 nframes_ = 0;
53 }
54
PSNRPktHook(const vpx_codec_cx_pkt_t * pkt)55 virtual void PSNRPktHook(const vpx_codec_cx_pkt_t *pkt) {
56 if (pkt->data.psnr.psnr[0] < psnr_) psnr_ = pkt->data.psnr.psnr[0];
57 }
58
GetMinPsnr() const59 double GetMinPsnr() const { return psnr_; }
60
61 private:
62 double psnr_;
63 unsigned int nframes_;
64 libvpx_test::TestMode encoding_mode_;
65 };
66
TEST_P(LosslessTest,TestLossLessEncoding)67 TEST_P(LosslessTest, TestLossLessEncoding) {
68 const vpx_rational timebase = { 33333333, 1000000000 };
69 cfg_.g_timebase = timebase;
70 cfg_.rc_target_bitrate = 2000;
71 cfg_.g_lag_in_frames = 25;
72 cfg_.rc_min_quantizer = 0;
73 cfg_.rc_max_quantizer = 0;
74
75 init_flags_ = VPX_CODEC_USE_PSNR;
76
77 // intentionally changed the dimension for better testing coverage
78 libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
79 timebase.den, timebase.num, 0, 10);
80 ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
81 const double psnr_lossless = GetMinPsnr();
82 EXPECT_GE(psnr_lossless, kMaxPsnr);
83 }
84
TEST_P(LosslessTest,TestLossLessEncoding444)85 TEST_P(LosslessTest, TestLossLessEncoding444) {
86 libvpx_test::Y4mVideoSource video("rush_hour_444.y4m", 0, 10);
87
88 cfg_.g_profile = 1;
89 cfg_.g_timebase = video.timebase();
90 cfg_.rc_target_bitrate = 2000;
91 cfg_.g_lag_in_frames = 25;
92 cfg_.rc_min_quantizer = 0;
93 cfg_.rc_max_quantizer = 0;
94
95 init_flags_ = VPX_CODEC_USE_PSNR;
96
97 ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
98 const double psnr_lossless = GetMinPsnr();
99 EXPECT_GE(psnr_lossless, kMaxPsnr);
100 }
101
TEST_P(LosslessTest,TestLossLessEncodingCtrl)102 TEST_P(LosslessTest, TestLossLessEncodingCtrl) {
103 const vpx_rational timebase = { 33333333, 1000000000 };
104 cfg_.g_timebase = timebase;
105 cfg_.rc_target_bitrate = 2000;
106 cfg_.g_lag_in_frames = 25;
107 // Intentionally set Q > 0, to make sure control can be used to activate
108 // lossless
109 cfg_.rc_min_quantizer = 10;
110 cfg_.rc_max_quantizer = 20;
111
112 init_flags_ = VPX_CODEC_USE_PSNR;
113
114 libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
115 timebase.den, timebase.num, 0, 10);
116 ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
117 const double psnr_lossless = GetMinPsnr();
118 EXPECT_GE(psnr_lossless, kMaxPsnr);
119 }
120
121 VP9_INSTANTIATE_TEST_CASE(LosslessTest,
122 ::testing::Values(::libvpx_test::kRealTime,
123 ::libvpx_test::kOnePassGood,
124 ::libvpx_test::kTwoPassGood));
125 } // namespace
126