test/vp9_skip_loopfilter_test.cc

   1 /*
   2  *  Copyright (c) 2015 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 <string>
  12
  13 #include "test/codec_factory.h"
  14 #include "test/decode_test_driver.h"
  15 #include "test/md5_helper.h"
  16 #include "test/util.h"
  17 #include "test/webm_video_source.h"
  18
  19 namespace {
  20
  21 const char kVp9TestFile[] = "vp90-2-08-tile_1x8_frame_parallel.webm";
  22 const char kVp9Md5File[] = "vp90-2-08-tile_1x8_frame_parallel.webm.md5";
  23
  24 // Class for testing shutting off the loop filter.
  25 class SkipLoopFilterTest {
  26  public:
  27   SkipLoopFilterTest()
  28       : video_(NULL),
  29         decoder_(NULL),
  30         md5_file_(NULL) {}
  31
  32   ~SkipLoopFilterTest() {
  33     if (md5_file_ != NULL)
  34       fclose(md5_file_);
  35     delete decoder_;
  36     delete video_;
  37   }
  38
  39   // If |threads| > 0 then set the decoder with that number of threads.
  40   void Init(int num_threads) {
  41     expected_md5_[0] = '\0';
  42     junk_[0] = '\0';
  43     video_ = new libvpx_test::WebMVideoSource(kVp9TestFile);
  44     ASSERT_TRUE(video_ != NULL);
  45     video_->Init();
  46     video_->Begin();
  47
  48     vpx_codec_dec_cfg_t cfg = vpx_codec_dec_cfg_t();
  49     if (num_threads > 0)
  50       cfg.threads = num_threads;
  51     decoder_ = new libvpx_test::VP9Decoder(cfg, 0);
  52     ASSERT_TRUE(decoder_ != NULL);
  53
  54     OpenMd5File(kVp9Md5File);
  55   }
  56
  57   // Set the VP9 skipLoopFilter control value.
  58   void SetSkipLoopFilter(int value, vpx_codec_err_t expected_value) {
  59     decoder_->Control(VP9_SET_SKIP_LOOP_FILTER, value, expected_value);
  60   }
  61
  62   vpx_codec_err_t DecodeOneFrame() {
  63     const vpx_codec_err_t res =
  64         decoder_->DecodeFrame(video_->cxdata(), video_->frame_size());
  65     if (res == VPX_CODEC_OK) {
  66       ReadMd5();
  67       video_->Next();
  68     }
  69     return res;
  70   }
  71
  72   vpx_codec_err_t DecodeRemainingFrames() {
  73     for (; video_->cxdata() != NULL; video_->Next()) {
  74       const vpx_codec_err_t res =
  75           decoder_->DecodeFrame(video_->cxdata(), video_->frame_size());
  76       if (res != VPX_CODEC_OK)
  77         return res;
  78       ReadMd5();
  79     }
  80     return VPX_CODEC_OK;
  81   }
  82
  83   // Checks if MD5 matches or doesn't.
  84   void CheckMd5(bool matches) {
  85     libvpx_test::DxDataIterator dec_iter = decoder_->GetDxData();
  86     const vpx_image_t *img = dec_iter.Next();
  87     CheckMd5Vpx(*img, matches);
  88   }
  89
  90  private:
  91   // TODO(fgalligan): Move the MD5 testing code into another class.
  92   void OpenMd5File(const std::string &md5_file_name) {
  93     md5_file_ = libvpx_test::OpenTestDataFile(md5_file_name);
  94     ASSERT_TRUE(md5_file_ != NULL) << "MD5 file open failed. Filename: "
  95         << md5_file_name;
  96   }
  97
  98   // Reads the next line of the MD5 file.
  99   void ReadMd5() {
 100     ASSERT_TRUE(md5_file_ != NULL);
 101     const int res = fscanf(md5_file_, "%s  %s", expected_md5_, junk_);
 102     ASSERT_NE(EOF, res) << "Read md5 data failed";
 103     expected_md5_[32] = '\0';
 104   }
 105
 106   // Checks if the last read MD5 matches |img| or doesn't.
 107   void CheckMd5Vpx(const vpx_image_t &img, bool matches) {
 108     ::libvpx_test::MD5 md5_res;
 109     md5_res.Add(&img);
 110     const char *const actual_md5 = md5_res.Get();
 111
 112     // Check MD5.
 113     if (matches)
 114       ASSERT_STREQ(expected_md5_, actual_md5) << "MD5 checksums don't match";
 115     else
 116       ASSERT_STRNE(expected_md5_, actual_md5) << "MD5 checksums match";
 117   }
 118
 119   libvpx_test::WebMVideoSource *video_;
 120   libvpx_test::VP9Decoder *decoder_;
 121   FILE *md5_file_;
 122   char expected_md5_[33];
 123   char junk_[128];
 124 };
 125
 126 TEST(SkipLoopFilterTest, ShutOffLoopFilter) {
 127   const int non_zero_value = 1;
 128   const int num_threads = 0;
 129   SkipLoopFilterTest skip_loop_filter;
 130   skip_loop_filter.Init(num_threads);
 131   skip_loop_filter.SetSkipLoopFilter(non_zero_value, VPX_CODEC_OK);
 132   ASSERT_EQ(VPX_CODEC_OK, skip_loop_filter.DecodeRemainingFrames());
 133   skip_loop_filter.CheckMd5(false);
 134 }
 135
 136 TEST(SkipLoopFilterTest, ShutOffLoopFilterSingleThread) {
 137   const int non_zero_value = 1;
 138   const int num_threads = 1;
 139   SkipLoopFilterTest skip_loop_filter;
 140   skip_loop_filter.Init(num_threads);
 141   skip_loop_filter.SetSkipLoopFilter(non_zero_value, VPX_CODEC_OK);
 142   ASSERT_EQ(VPX_CODEC_OK, skip_loop_filter.DecodeRemainingFrames());
 143   skip_loop_filter.CheckMd5(false);
 144 }
 145
 146 TEST(SkipLoopFilterTest, ShutOffLoopFilter8Threads) {
 147   const int non_zero_value = 1;
 148   const int num_threads = 8;
 149   SkipLoopFilterTest skip_loop_filter;
 150   skip_loop_filter.Init(num_threads);
 151   skip_loop_filter.SetSkipLoopFilter(non_zero_value, VPX_CODEC_OK);
 152   ASSERT_EQ(VPX_CODEC_OK, skip_loop_filter.DecodeRemainingFrames());
 153   skip_loop_filter.CheckMd5(false);
 154 }
 155
 156 TEST(SkipLoopFilterTest, WithLoopFilter) {
 157   const int non_zero_value = 1;
 158   const int num_threads = 0;
 159   SkipLoopFilterTest skip_loop_filter;
 160   skip_loop_filter.Init(num_threads);
 161   skip_loop_filter.SetSkipLoopFilter(non_zero_value, VPX_CODEC_OK);
 162   skip_loop_filter.SetSkipLoopFilter(0, VPX_CODEC_OK);
 163   ASSERT_EQ(VPX_CODEC_OK, skip_loop_filter.DecodeRemainingFrames());
 164   skip_loop_filter.CheckMd5(true);
 165 }
 166
 167 TEST(SkipLoopFilterTest, ToggleLoopFilter) {
 168   const int num_threads = 0;
 169   SkipLoopFilterTest skip_loop_filter;
 170   skip_loop_filter.Init(num_threads);
 171
 172   for (int i = 0; i < 10; ++i) {
 173     skip_loop_filter.SetSkipLoopFilter(i % 2, VPX_CODEC_OK);
 174     ASSERT_EQ(VPX_CODEC_OK, skip_loop_filter.DecodeOneFrame());
 175   }
 176   ASSERT_EQ(VPX_CODEC_OK, skip_loop_filter.DecodeRemainingFrames());
 177   skip_loop_filter.CheckMd5(false);
 178 }
 179
 180 }  // namespace