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
26using libvpx_test::ACMRandom;
27
28namespace {
29
30const int kNumPixels = 16 * 16;
31class 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
45TEST_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.
115INSTANTIATE_TEST_CASE_P(SSE2, VP8DenoiserTest, ::testing::Values(0, 1));
116}  // namespace
117