vp9_lossless_test.cc revision 9b35249446b07f40ac5fcc3205f2c048616efacc 
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
11#include "third_party/googletest/src/include/gtest/gtest.h"
12#include "test/codec_factory.h"
13#include "test/encode_test_driver.h"
14#include "test/i420_video_source.h"
15#include "test/util.h"
16
17namespace {
18
19const int kMaxPsnr = 100;
20
21class LossLessTest : public ::libvpx_test::EncoderTest,
22    public ::libvpx_test::CodecTestWithParam<libvpx_test::TestMode> {
23 protected:
24  LossLessTest() : EncoderTest(GET_PARAM(0)),
25                   psnr_(kMaxPsnr),
26                   nframes_(0),
27                   encoding_mode_(GET_PARAM(1)) {
28  }
29
30  virtual ~LossLessTest() {}
31
32  virtual void SetUp() {
33    InitializeConfig();
34    SetMode(encoding_mode_);
35  }
36
37  virtual void BeginPassHook(unsigned int /*pass*/) {
38    psnr_ = kMaxPsnr;
39    nframes_ = 0;
40  }
41
42  virtual void PSNRPktHook(const vpx_codec_cx_pkt_t *pkt) {
43    if (pkt->data.psnr.psnr[0] < psnr_)
44      psnr_= pkt->data.psnr.psnr[0];
45  }
46
47  double GetMinPsnr() const {
48      return psnr_;
49  }
50
51 private:
52  double psnr_;
53  unsigned int nframes_;
54  libvpx_test::TestMode encoding_mode_;
55};
56
57TEST_P(LossLessTest, TestLossLessEncoding) {
58  const vpx_rational timebase = { 33333333, 1000000000 };
59  cfg_.g_timebase = timebase;
60  cfg_.rc_target_bitrate = 2000;
61  cfg_.g_lag_in_frames = 25;
62  cfg_.rc_min_quantizer = 0;
63  cfg_.rc_max_quantizer = 0;
64
65  init_flags_ = VPX_CODEC_USE_PSNR;
66
67  // intentionally changed the dimension for better testing coverage
68  libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
69                                     timebase.den, timebase.num, 0, 30);
70  ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
71  const double psnr_lossless = GetMinPsnr();
72  EXPECT_GE(psnr_lossless, kMaxPsnr);
73}
74VP9_INSTANTIATE_TEST_CASE(LossLessTest, ALL_TEST_MODES);
75}  // namespace
76