test/idct_test.cc

   1 /*
   2  *  Copyright (c) 2010 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 "./vpx_config.h"
  12 #include "./vp8_rtcd.h"
  13 #include "test/clear_system_state.h"
  14 #include "test/register_state_check.h"
  15 #include "third_party/googletest/src/include/gtest/gtest.h"
  16
  17 #include "vpx/vpx_integer.h"
  18
  19 typedef void (*idct_fn_t)(int16_t *input, unsigned char *pred_ptr,
  20                           int pred_stride, unsigned char *dst_ptr,
  21                           int dst_stride);
  22 namespace {
  23 class IDCTTest : public ::testing::TestWithParam<idct_fn_t> {
  24  protected:
  25   virtual void SetUp() {
  26     int i;
  27
  28     UUT = GetParam();
  29     memset(input, 0, sizeof(input));
  30     /* Set up guard blocks */
  31     for (i = 0; i < 256; i++) output[i] = ((i & 0xF) < 4 && (i < 64)) ? 0 : -1;
  32   }
  33
  34   virtual void TearDown() { libvpx_test::ClearSystemState(); }
  35
  36   idct_fn_t UUT;
  37   int16_t input[16];
  38   unsigned char output[256];
  39   unsigned char predict[256];
  40 };
  41
  42 TEST_P(IDCTTest, TestGuardBlocks) {
  43   int i;
  44
  45   for (i = 0; i < 256; i++)
  46     if ((i & 0xF) < 4 && i < 64)
  47       EXPECT_EQ(0, output[i]) << i;
  48     else
  49       EXPECT_EQ(255, output[i]);
  50 }
  51
  52 TEST_P(IDCTTest, TestAllZeros) {
  53   int i;
  54
  55   REGISTER_STATE_CHECK(UUT(input, output, 16, output, 16));
  56
  57   for (i = 0; i < 256; i++)
  58     if ((i & 0xF) < 4 && i < 64)
  59       EXPECT_EQ(0, output[i]) << "i==" << i;
  60     else
  61       EXPECT_EQ(255, output[i]) << "i==" << i;
  62 }
  63
  64 TEST_P(IDCTTest, TestAllOnes) {
  65   int i;
  66
  67   input[0] = 4;
  68   REGISTER_STATE_CHECK(UUT(input, output, 16, output, 16));
  69
  70   for (i = 0; i < 256; i++)
  71     if ((i & 0xF) < 4 && i < 64)
  72       EXPECT_EQ(1, output[i]) << "i==" << i;
  73     else
  74       EXPECT_EQ(255, output[i]) << "i==" << i;
  75 }
  76
  77 TEST_P(IDCTTest, TestAddOne) {
  78   int i;
  79
  80   for (i = 0; i < 256; i++) predict[i] = i;
  81   input[0] = 4;
  82   REGISTER_STATE_CHECK(UUT(input, predict, 16, output, 16));
  83
  84   for (i = 0; i < 256; i++)
  85     if ((i & 0xF) < 4 && i < 64)
  86       EXPECT_EQ(i + 1, output[i]) << "i==" << i;
  87     else
  88       EXPECT_EQ(255, output[i]) << "i==" << i;
  89 }
  90
  91 TEST_P(IDCTTest, TestWithData) {
  92   int i;
  93
  94   for (i = 0; i < 16; i++) input[i] = i;
  95
  96   REGISTER_STATE_CHECK(UUT(input, output, 16, output, 16));
  97
  98   for (i = 0; i < 256; i++)
  99     if ((i & 0xF) > 3 || i > 63)
 100       EXPECT_EQ(255, output[i]) << "i==" << i;
 101     else if (i == 0)
 102       EXPECT_EQ(11, output[i]) << "i==" << i;
 103     else if (i == 34)
 104       EXPECT_EQ(1, output[i]) << "i==" << i;
 105     else if (i == 2 || i == 17 || i == 32)
 106       EXPECT_EQ(3, output[i]) << "i==" << i;
 107     else
 108       EXPECT_EQ(0, output[i]) << "i==" << i;
 109 }
 110
 111 INSTANTIATE_TEST_CASE_P(C, IDCTTest, ::testing::Values(vp8_short_idct4x4llm_c));
 112 #if HAVE_MMX
 113 INSTANTIATE_TEST_CASE_P(MMX, IDCTTest,
 114                         ::testing::Values(vp8_short_idct4x4llm_mmx));
 115 #endif
 116 }