test/y4m_test.cc

   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 <string>
  12
  13 #include "third_party/googletest/src/include/gtest/gtest.h"
  14
  15 #include "./vpx_config.h"
  16 #include "./y4menc.h"
  17 #include "test/md5_helper.h"
  18 #include "test/util.h"
  19 #include "test/y4m_video_source.h"
  20
  21 namespace {
  22
  23 using std::string;
  24
  25 static const unsigned int kWidth  = 160;
  26 static const unsigned int kHeight = 90;
  27 static const unsigned int kFrames = 10;
  28
  29 struct Y4mTestParam {
  30   const char *filename;
  31   unsigned int bit_depth;
  32   vpx_img_fmt format;
  33   const char *md5raw;
  34 };
  35
  36 const Y4mTestParam kY4mTestVectors[] = {
  37   {"park_joy_90p_8_420.y4m", 8, VPX_IMG_FMT_I420,
  38     "e5406275b9fc6bb3436c31d4a05c1cab"},
  39   {"park_joy_90p_8_422.y4m", 8, VPX_IMG_FMT_I422,
  40     "284a47a47133b12884ec3a14e959a0b6"},
  41   {"park_joy_90p_8_444.y4m", 8, VPX_IMG_FMT_I444,
  42     "90517ff33843d85de712fd4fe60dbed0"},
  43   {"park_joy_90p_10_420.y4m", 10, VPX_IMG_FMT_I42016,
  44     "63f21f9f717d8b8631bd2288ee87137b"},
  45   {"park_joy_90p_10_422.y4m", 10, VPX_IMG_FMT_I42216,
  46     "48ab51fb540aed07f7ff5af130c9b605"},
  47   {"park_joy_90p_10_444.y4m", 10, VPX_IMG_FMT_I44416,
  48     "067bfd75aa85ff9bae91fa3e0edd1e3e"},
  49   {"park_joy_90p_12_420.y4m", 12, VPX_IMG_FMT_I42016,
  50     "9e6d8f6508c6e55625f6b697bc461cef"},
  51   {"park_joy_90p_12_422.y4m", 12, VPX_IMG_FMT_I42216,
  52     "b239c6b301c0b835485be349ca83a7e3"},
  53   {"park_joy_90p_12_444.y4m", 12, VPX_IMG_FMT_I44416,
  54     "5a6481a550821dab6d0192f5c63845e9"},
  55 };
  56
  57 static void write_image_file(const vpx_image_t *img, FILE *file) {
  58   int plane, y;
  59   for (plane = 0; plane < 3; ++plane) {
  60     const unsigned char *buf = img->planes[plane];
  61     const int stride = img->stride[plane];
  62     const int bytes_per_sample = (img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1;
  63     const int h = (plane ? (img->d_h + img->y_chroma_shift) >>
  64                    img->y_chroma_shift : img->d_h);
  65     const int w = (plane ? (img->d_w + img->x_chroma_shift) >>
  66                    img->x_chroma_shift : img->d_w);
  67     for (y = 0; y < h; ++y) {
  68       fwrite(buf, bytes_per_sample, w, file);
  69       buf += stride;
  70     }
  71   }
  72 }
  73
  74 class Y4mVideoSourceTest
  75     : public ::testing::TestWithParam<Y4mTestParam>,
  76       public ::libvpx_test::Y4mVideoSource {
  77  protected:
  78   Y4mVideoSourceTest() : Y4mVideoSource("", 0, 0) {}
  79
  80   virtual ~Y4mVideoSourceTest() {
  81     CloseSource();
  82   }
  83
  84   virtual void Init(const std::string &file_name, int limit) {
  85     file_name_ = file_name;
  86     start_ = 0;
  87     limit_ = limit;
  88     frame_ = 0;
  89     Begin();
  90   }
  91
  92   // Checks y4m header information
  93   void HeaderChecks(unsigned int bit_depth, vpx_img_fmt_t fmt) {
  94     ASSERT_TRUE(input_file_ != NULL);
  95     ASSERT_EQ(y4m_.pic_w, (int)kWidth);
  96     ASSERT_EQ(y4m_.pic_h, (int)kHeight);
  97     ASSERT_EQ(img()->d_w, kWidth);
  98     ASSERT_EQ(img()->d_h, kHeight);
  99     ASSERT_EQ(y4m_.bit_depth, bit_depth);
 100     ASSERT_EQ(y4m_.vpx_fmt, fmt);
 101     if (fmt == VPX_IMG_FMT_I420 || fmt == VPX_IMG_FMT_I42016) {
 102       ASSERT_EQ(y4m_.bps, (int)y4m_.bit_depth * 3 / 2);
 103       ASSERT_EQ(img()->x_chroma_shift, 1U);
 104       ASSERT_EQ(img()->y_chroma_shift, 1U);
 105     }
 106     if (fmt == VPX_IMG_FMT_I422 || fmt == VPX_IMG_FMT_I42216) {
 107       ASSERT_EQ(y4m_.bps, (int)y4m_.bit_depth * 2);
 108       ASSERT_EQ(img()->x_chroma_shift, 1U);
 109       ASSERT_EQ(img()->y_chroma_shift, 0U);
 110     }
 111     if (fmt == VPX_IMG_FMT_I444 || fmt == VPX_IMG_FMT_I44416) {
 112       ASSERT_EQ(y4m_.bps, (int)y4m_.bit_depth * 3);
 113       ASSERT_EQ(img()->x_chroma_shift, 0U);
 114       ASSERT_EQ(img()->y_chroma_shift, 0U);
 115     }
 116   }
 117
 118   // Checks MD5 of the raw frame data
 119   void Md5Check(const string &expected_md5) {
 120     ASSERT_TRUE(input_file_ != NULL);
 121     libvpx_test::MD5 md5;
 122     for (unsigned int i = start_; i < limit_; i++) {
 123       md5.Add(img());
 124       Next();
 125     }
 126     ASSERT_EQ(string(md5.Get()), expected_md5);
 127   }
 128 };
 129
 130 TEST_P(Y4mVideoSourceTest, SourceTest) {
 131   const Y4mTestParam t = GetParam();
 132   Init(t.filename, kFrames);
 133   HeaderChecks(t.bit_depth, t.format);
 134   Md5Check(t.md5raw);
 135 }
 136
 137 INSTANTIATE_TEST_CASE_P(C, Y4mVideoSourceTest,
 138                         ::testing::ValuesIn(kY4mTestVectors));
 139
 140 class Y4mVideoWriteTest
 141     : public Y4mVideoSourceTest {
 142  protected:
 143   Y4mVideoWriteTest() {}
 144
 145   virtual ~Y4mVideoWriteTest() {
 146     delete tmpfile_;
 147     input_file_ = NULL;
 148   }
 149
 150   void ReplaceInputFile(FILE *input_file) {
 151     CloseSource();
 152     frame_ = 0;
 153     input_file_ = input_file;
 154     rewind(input_file_);
 155     ReadSourceToStart();
 156   }
 157
 158   // Writes out a y4m file and then reads it back
 159   void WriteY4mAndReadBack() {
 160     ASSERT_TRUE(input_file_ != NULL);
 161     char buf[Y4M_BUFFER_SIZE] = {0};
 162     const struct VpxRational framerate = {y4m_.fps_n, y4m_.fps_d};
 163     tmpfile_ = new libvpx_test::TempOutFile;
 164     ASSERT_TRUE(tmpfile_->file() != NULL);
 165     y4m_write_file_header(buf, sizeof(buf),
 166                           kWidth, kHeight,
 167                           &framerate, y4m_.vpx_fmt,
 168                           y4m_.bit_depth);
 169     fputs(buf, tmpfile_->file());
 170     for (unsigned int i = start_; i < limit_; i++) {
 171       y4m_write_frame_header(buf, sizeof(buf));
 172       fputs(buf, tmpfile_->file());
 173       write_image_file(img(), tmpfile_->file());
 174       Next();
 175     }
 176     ReplaceInputFile(tmpfile_->file());
 177   }
 178
 179   virtual void Init(const std::string &file_name, int limit) {
 180     Y4mVideoSourceTest::Init(file_name, limit);
 181     WriteY4mAndReadBack();
 182   }
 183   libvpx_test::TempOutFile *tmpfile_;
 184 };
 185
 186 TEST_P(Y4mVideoWriteTest, WriteTest) {
 187   const Y4mTestParam t = GetParam();
 188   Init(t.filename, kFrames);
 189   HeaderChecks(t.bit_depth, t.format);
 190   Md5Check(t.md5raw);
 191 }
 192
 193 INSTANTIATE_TEST_CASE_P(C, Y4mVideoWriteTest,
 194                         ::testing::ValuesIn(kY4mTestVectors));
 195 }  // namespace