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1 /*
2  *  Copyright (c) 2012 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 #include <climits>
11 #include <vector>
12 #include "third_party/googletest/src/include/gtest/gtest.h"
13 #include "test/codec_factory.h"
14 #include "test/encode_test_driver.h"
15 #include "test/i420_video_source.h"
16 #include "test/util.h"
17 
18 namespace {
19 
20 class KeyframeTest : public ::libvpx_test::EncoderTest,
21     public ::libvpx_test::CodecTestWithParam<libvpx_test::TestMode> {
22  protected:
KeyframeTest()23   KeyframeTest() : EncoderTest(GET_PARAM(0)) {}
~KeyframeTest()24   virtual ~KeyframeTest() {}
25 
SetUp()26   virtual void SetUp() {
27     InitializeConfig();
28     SetMode(GET_PARAM(1));
29     kf_count_ = 0;
30     kf_count_max_ = INT_MAX;
31     kf_do_force_kf_ = false;
32     set_cpu_used_ = 0;
33   }
34 
PreEncodeFrameHook(::libvpx_test::VideoSource * video,::libvpx_test::Encoder * encoder)35   virtual void PreEncodeFrameHook(::libvpx_test::VideoSource *video,
36                                   ::libvpx_test::Encoder *encoder) {
37     if (kf_do_force_kf_)
38       frame_flags_ = (video->frame() % 3) ? 0 : VPX_EFLAG_FORCE_KF;
39     if (set_cpu_used_ && video->frame() == 1)
40       encoder->Control(VP8E_SET_CPUUSED, set_cpu_used_);
41   }
42 
FramePktHook(const vpx_codec_cx_pkt_t * pkt)43   virtual void FramePktHook(const vpx_codec_cx_pkt_t *pkt) {
44     if (pkt->data.frame.flags & VPX_FRAME_IS_KEY) {
45       kf_pts_list_.push_back(pkt->data.frame.pts);
46       kf_count_++;
47       abort_ |= kf_count_ > kf_count_max_;
48     }
49   }
50 
51   bool kf_do_force_kf_;
52   int kf_count_;
53   int kf_count_max_;
54   std::vector<vpx_codec_pts_t> kf_pts_list_;
55   int set_cpu_used_;
56 };
57 
TEST_P(KeyframeTest,TestRandomVideoSource)58 TEST_P(KeyframeTest, TestRandomVideoSource) {
59   // Validate that encoding the RandomVideoSource produces multiple keyframes.
60   // This validates the results of the TestDisableKeyframes test.
61   kf_count_max_ = 2;  // early exit successful tests.
62 
63   ::libvpx_test::RandomVideoSource video;
64   ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
65 
66   // In realtime mode - auto placed keyframes are exceedingly rare,  don't
67   // bother with this check   if(GetParam() > 0)
68   if (GET_PARAM(1) > 0)
69     EXPECT_GT(kf_count_, 1);
70 }
71 
TEST_P(KeyframeTest,TestDisableKeyframes)72 TEST_P(KeyframeTest, TestDisableKeyframes) {
73   cfg_.kf_mode = VPX_KF_DISABLED;
74   kf_count_max_ = 1;  // early exit failed tests.
75 
76   ::libvpx_test::RandomVideoSource video;
77   ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
78 
79   EXPECT_EQ(1, kf_count_);
80 }
81 
TEST_P(KeyframeTest,TestForceKeyframe)82 TEST_P(KeyframeTest, TestForceKeyframe) {
83   cfg_.kf_mode = VPX_KF_DISABLED;
84   kf_do_force_kf_ = true;
85 
86   ::libvpx_test::DummyVideoSource video;
87   ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
88 
89   // verify that every third frame is a keyframe.
90   for (std::vector<vpx_codec_pts_t>::const_iterator iter = kf_pts_list_.begin();
91        iter != kf_pts_list_.end(); ++iter) {
92     ASSERT_EQ(0, *iter % 3) << "Unexpected keyframe at frame " << *iter;
93   }
94 }
95 
TEST_P(KeyframeTest,TestKeyframeMaxDistance)96 TEST_P(KeyframeTest, TestKeyframeMaxDistance) {
97   cfg_.kf_max_dist = 25;
98 
99   ::libvpx_test::DummyVideoSource video;
100   ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
101 
102   // verify that keyframe interval matches kf_max_dist
103   for (std::vector<vpx_codec_pts_t>::const_iterator iter = kf_pts_list_.begin();
104        iter != kf_pts_list_.end(); ++iter) {
105     ASSERT_EQ(0, *iter % 25) << "Unexpected keyframe at frame " << *iter;
106   }
107 }
108 
TEST_P(KeyframeTest,TestAutoKeyframe)109 TEST_P(KeyframeTest, TestAutoKeyframe) {
110   cfg_.kf_mode = VPX_KF_AUTO;
111   kf_do_force_kf_ = false;
112 
113   // Force a deterministic speed step in Real Time mode, as the faster modes
114   // may not produce a keyframe like we expect. This is necessary when running
115   // on very slow environments (like Valgrind). The step -11 was determined
116   // experimentally as the fastest mode that still throws the keyframe.
117   if (deadline_ == VPX_DL_REALTIME)
118     set_cpu_used_ = -11;
119 
120   // This clip has a cut scene every 30 frames -> Frame 0, 30, 60, 90, 120.
121   // I check only the first 40 frames to make sure there's a keyframe at frame
122   // 0 and 30.
123   ::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
124                                        30, 1, 0, 40);
125 
126   ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
127 
128   // In realtime mode - auto placed keyframes are exceedingly rare,  don't
129   // bother with this check
130   if (GET_PARAM(1) > 0)
131     EXPECT_EQ(2u, kf_pts_list_.size()) << " Not the right number of keyframes ";
132 
133   // Verify that keyframes match the file keyframes in the file.
134   for (std::vector<vpx_codec_pts_t>::const_iterator iter = kf_pts_list_.begin();
135        iter != kf_pts_list_.end(); ++iter) {
136     if (deadline_ == VPX_DL_REALTIME && *iter > 0)
137       EXPECT_EQ(0, (*iter - 1) % 30) << "Unexpected keyframe at frame "
138         << *iter;
139     else
140       EXPECT_EQ(0, *iter % 30) << "Unexpected keyframe at frame " << *iter;
141   }
142 }
143 
144 VP8_INSTANTIATE_TEST_CASE(KeyframeTest, ALL_TEST_MODES);
145 }  // namespace
146