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#include "test/clear_system_state.h"
11#include "test/register_state_check.h"
12#include "third_party/googletest/src/include/gtest/gtest.h"
13#include "./vpx_config.h"
14#include "./vp8_rtcd.h"
15#include "vpx/vpx_integer.h"
16#include "vpx_mem/vpx_mem.h"
17
18typedef void (*post_proc_func_t)(unsigned char *src_ptr,
19                                 unsigned char *dst_ptr,
20                                 int src_pixels_per_line,
21                                 int dst_pixels_per_line,
22                                 int cols,
23                                 unsigned char *flimit,
24                                 int size);
25
26namespace {
27
28class VP8PostProcessingFilterTest
29    : public ::testing::TestWithParam<post_proc_func_t> {
30 public:
31  virtual void TearDown() {
32    libvpx_test::ClearSystemState();
33  }
34};
35
36// Test routine for the VP8 post-processing function
37// vp8_post_proc_down_and_across_mb_row_c.
38
39TEST_P(VP8PostProcessingFilterTest, FilterOutputCheck) {
40  // Size of the underlying data block that will be filtered.
41  const int block_width  = 16;
42  const int block_height = 16;
43
44  // 5-tap filter needs 2 padding rows above and below the block in the input.
45  const int input_width = block_width;
46  const int input_height = block_height + 4;
47  const int input_stride = input_width;
48  const int input_size = input_width * input_height;
49
50  // Filter extends output block by 8 samples at left and right edges.
51  const int output_width = block_width + 16;
52  const int output_height = block_height;
53  const int output_stride = output_width;
54  const int output_size = output_width * output_height;
55
56  uint8_t *const src_image =
57      reinterpret_cast<uint8_t*>(vpx_calloc(input_size, 1));
58  uint8_t *const dst_image =
59      reinterpret_cast<uint8_t*>(vpx_calloc(output_size, 1));
60
61  // Pointers to top-left pixel of block in the input and output images.
62  uint8_t *const src_image_ptr = src_image + (input_stride << 1);
63  uint8_t *const dst_image_ptr = dst_image + 8;
64  uint8_t *const flimits =
65      reinterpret_cast<uint8_t *>(vpx_memalign(16, block_width));
66  (void)vpx_memset(flimits, 255, block_width);
67
68  // Initialize pixels in the input:
69  //   block pixels to value 1,
70  //   border pixels to value 10.
71  (void)vpx_memset(src_image, 10, input_size);
72  uint8_t *pixel_ptr = src_image_ptr;
73  for (int i = 0; i < block_height; ++i) {
74    for (int j = 0; j < block_width; ++j) {
75      pixel_ptr[j] = 1;
76    }
77    pixel_ptr += input_stride;
78  }
79
80  // Initialize pixels in the output to 99.
81  (void)vpx_memset(dst_image, 99, output_size);
82
83  REGISTER_STATE_CHECK(GetParam()(src_image_ptr, dst_image_ptr, input_stride,
84                                  output_stride, block_width, flimits, 16));
85
86  static const uint8_t expected_data[block_height] = {
87    4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 4
88  };
89
90  pixel_ptr = dst_image_ptr;
91  for (int i = 0; i < block_height; ++i) {
92    for (int j = 0; j < block_width; ++j) {
93      EXPECT_EQ(expected_data[i], pixel_ptr[j])
94          << "VP8PostProcessingFilterTest failed with invalid filter output";
95    }
96    pixel_ptr += output_stride;
97  }
98
99  vpx_free(src_image);
100  vpx_free(dst_image);
101  vpx_free(flimits);
102};
103
104INSTANTIATE_TEST_CASE_P(C, VP8PostProcessingFilterTest,
105    ::testing::Values(vp8_post_proc_down_and_across_mb_row_c));
106
107#if HAVE_SSE2
108INSTANTIATE_TEST_CASE_P(SSE2, VP8PostProcessingFilterTest,
109    ::testing::Values(vp8_post_proc_down_and_across_mb_row_sse2));
110#endif
111
112}  // namespace
113