test/vp8_denoiser_sse2_test.cc

   1 /*
   2  *  Copyright (c) 2014 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 <math.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14
  15 #include "third_party/googletest/src/include/gtest/gtest.h"
  16 #include "test/acm_random.h"
  17 #include "test/clear_system_state.h"
  18 #include "test/register_state_check.h"
  19 #include "test/util.h"
  20
  21 #include "vp8/encoder/denoising.h"
  22 #include "vp8/common/reconinter.h"
  23 #include "vpx/vpx_integer.h"
  24 #include "vpx_mem/vpx_mem.h"
  25
  26 using libvpx_test::ACMRandom;
  27
  28 namespace {
  29
  30 const int kNumPixels = 16 * 16;
  31 class VP8DenoiserTest : public ::testing::TestWithParam<int> {
  32  public:
  33   virtual ~VP8DenoiserTest() {}
  34
  35   virtual void SetUp() {
  36     increase_denoising_ = GetParam();
  37   }
  38
  39   virtual void TearDown() { libvpx_test::ClearSystemState(); }
  40
  41  protected:
  42   int increase_denoising_;
  43 };
  44
  45 TEST_P(VP8DenoiserTest, BitexactCheck) {
  46   ACMRandom rnd(ACMRandom::DeterministicSeed());
  47   const int count_test_block = 4000;
  48   const int stride = 16;
  49
  50   // Allocate the space for input and output,
  51   // where sig_block_c/_sse2 is the block to be denoised,
  52   // mc_avg_block is the denoised reference block,
  53   // avg_block_c is the denoised result from C code,
  54   // avg_block_sse2 is the denoised result from SSE2 code.
  55   DECLARE_ALIGNED(16, uint8_t, sig_block_c[kNumPixels]);
  56   // Since in VP8 denoiser, the source signal will be changed,
  57   // we need another copy of the source signal as the input of sse2 code.
  58   DECLARE_ALIGNED(16, uint8_t, sig_block_sse2[kNumPixels]);
  59   DECLARE_ALIGNED(16, uint8_t, mc_avg_block[kNumPixels]);
  60   DECLARE_ALIGNED(16, uint8_t, avg_block_c[kNumPixels]);
  61   DECLARE_ALIGNED(16, uint8_t, avg_block_sse2[kNumPixels]);
  62
  63   for (int i = 0; i < count_test_block; ++i) {
  64     // Generate random motion magnitude, 20% of which exceed the threshold.
  65     const int motion_magnitude_ran =
  66         rnd.Rand8() % static_cast<int>(MOTION_MAGNITUDE_THRESHOLD * 1.2);
  67
  68     // Initialize a test block with random number in range [0, 255].
  69     for (int j = 0; j < kNumPixels; ++j) {
  70       int temp = 0;
  71       sig_block_sse2[j] = sig_block_c[j] = rnd.Rand8();
  72       // The pixels in mc_avg_block are generated by adding a random
  73       // number in range [-19, 19] to corresponding pixels in sig_block.
  74       temp = sig_block_c[j] + (rnd.Rand8() % 2 == 0 ? -1 : 1) *
  75              (rnd.Rand8() % 20);
  76       // Clip.
  77       mc_avg_block[j] = (temp < 0) ? 0 : ((temp > 255) ? 255 : temp);
  78     }
  79
  80     // Test denosiser on Y component.
  81     ASM_REGISTER_STATE_CHECK(vp8_denoiser_filter_c(
  82         mc_avg_block, stride, avg_block_c, stride, sig_block_c, stride,
  83         motion_magnitude_ran, increase_denoising_));
  84
  85     ASM_REGISTER_STATE_CHECK(vp8_denoiser_filter_sse2(
  86         mc_avg_block, stride, avg_block_sse2, stride, sig_block_sse2, stride,
  87         motion_magnitude_ran, increase_denoising_));
  88
  89     // Check bitexactness.
  90     for (int h = 0; h < 16; ++h) {
  91       for (int w = 0; w < 16; ++w) {
  92         EXPECT_EQ(avg_block_c[h * stride + w], avg_block_sse2[h * stride + w]);
  93       }
  94     }
  95
  96     // Test denoiser on UV component.
  97     ASM_REGISTER_STATE_CHECK(vp8_denoiser_filter_uv_c(
  98         mc_avg_block, stride, avg_block_c, stride, sig_block_c, stride,
  99         motion_magnitude_ran, increase_denoising_));
 100
 101     ASM_REGISTER_STATE_CHECK(vp8_denoiser_filter_uv_sse2(
 102         mc_avg_block, stride, avg_block_sse2, stride, sig_block_sse2, stride,
 103         motion_magnitude_ran, increase_denoising_));
 104
 105     // Check bitexactness.
 106     for (int h = 0; h < 16; ++h) {
 107       for (int w = 0; w < 16; ++w) {
 108         EXPECT_EQ(avg_block_c[h * stride + w], avg_block_sse2[h * stride + w]);
 109       }
 110     }
 111   }
 112 }
 113
 114 // Test for all block size.
 115 INSTANTIATE_TEST_CASE_P(SSE2, VP8DenoiserTest, ::testing::Values(0, 1));
 116 }  // namespace