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 "third_party/googletest/src/include/gtest/gtest.h"
12
13#include "./vpx_config.h"
14#include "./vpx_scale_rtcd.h"
15#include "test/clear_system_state.h"
16#include "test/register_state_check.h"
17#include "vpx_mem/vpx_mem.h"
18#include "vpx_scale/yv12config.h"
19
20namespace {
21
22typedef void (*ExtendFrameBorderFunc)(YV12_BUFFER_CONFIG *ybf);
23typedef void (*CopyFrameFunc)(const YV12_BUFFER_CONFIG *src_ybf,
24                              YV12_BUFFER_CONFIG *dst_ybf);
25
26class VpxScaleBase {
27 public:
28  virtual ~VpxScaleBase() { libvpx_test::ClearSystemState(); }
29
30  void ResetImage(int width, int height) {
31    width_ = width;
32    height_ = height;
33    memset(&img_, 0, sizeof(img_));
34    ASSERT_EQ(0, vp8_yv12_alloc_frame_buffer(&img_, width_, height_,
35                                             VP8BORDERINPIXELS));
36    memset(img_.buffer_alloc, kBufFiller, img_.frame_size);
37    FillPlane(img_.y_buffer, img_.y_crop_width, img_.y_crop_height,
38              img_.y_stride);
39    FillPlane(img_.u_buffer, img_.uv_crop_width, img_.uv_crop_height,
40              img_.uv_stride);
41    FillPlane(img_.v_buffer, img_.uv_crop_width, img_.uv_crop_height,
42              img_.uv_stride);
43
44    memset(&ref_img_, 0, sizeof(ref_img_));
45    ASSERT_EQ(0, vp8_yv12_alloc_frame_buffer(&ref_img_, width_, height_,
46                                             VP8BORDERINPIXELS));
47    memset(ref_img_.buffer_alloc, kBufFiller, ref_img_.frame_size);
48
49    memset(&cpy_img_, 0, sizeof(cpy_img_));
50    ASSERT_EQ(0, vp8_yv12_alloc_frame_buffer(&cpy_img_, width_, height_,
51                                             VP8BORDERINPIXELS));
52    memset(cpy_img_.buffer_alloc, kBufFiller, cpy_img_.frame_size);
53    ReferenceCopyFrame();
54  }
55
56  void DeallocImage() {
57    vp8_yv12_de_alloc_frame_buffer(&img_);
58    vp8_yv12_de_alloc_frame_buffer(&ref_img_);
59    vp8_yv12_de_alloc_frame_buffer(&cpy_img_);
60  }
61
62 protected:
63  static const int kBufFiller = 123;
64  static const int kBufMax = kBufFiller - 1;
65
66  static void FillPlane(uint8_t *buf, int width, int height, int stride) {
67    for (int y = 0; y < height; ++y) {
68      for (int x = 0; x < width; ++x) {
69        buf[x + (y * stride)] = (x + (width * y)) % kBufMax;
70      }
71    }
72  }
73
74  static void ExtendPlane(uint8_t *buf, int crop_width, int crop_height,
75                          int width, int height, int stride, int padding) {
76    // Copy the outermost visible pixel to a distance of at least 'padding.'
77    // The buffers are allocated such that there may be excess space outside the
78    // padding. As long as the minimum amount of padding is achieved it is not
79    // necessary to fill this space as well.
80    uint8_t *left = buf - padding;
81    uint8_t *right = buf + crop_width;
82    const int right_extend = padding + (width - crop_width);
83    const int bottom_extend = padding + (height - crop_height);
84
85    // Fill the border pixels from the nearest image pixel.
86    for (int y = 0; y < crop_height; ++y) {
87      memset(left, left[padding], padding);
88      memset(right, right[-1], right_extend);
89      left += stride;
90      right += stride;
91    }
92
93    left = buf - padding;
94    uint8_t *top = left - (stride * padding);
95    // The buffer does not always extend as far as the stride.
96    // Equivalent to padding + width + padding.
97    const int extend_width = padding + crop_width + right_extend;
98
99    // The first row was already extended to the left and right. Copy it up.
100    for (int y = 0; y < padding; ++y) {
101      memcpy(top, left, extend_width);
102      top += stride;
103    }
104
105    uint8_t *bottom = left + (crop_height * stride);
106    for (int y = 0; y < bottom_extend; ++y) {
107      memcpy(bottom, left + (crop_height - 1) * stride, extend_width);
108      bottom += stride;
109    }
110  }
111
112  void ReferenceExtendBorder() {
113    ExtendPlane(ref_img_.y_buffer, ref_img_.y_crop_width,
114                ref_img_.y_crop_height, ref_img_.y_width, ref_img_.y_height,
115                ref_img_.y_stride, ref_img_.border);
116    ExtendPlane(ref_img_.u_buffer, ref_img_.uv_crop_width,
117                ref_img_.uv_crop_height, ref_img_.uv_width, ref_img_.uv_height,
118                ref_img_.uv_stride, ref_img_.border / 2);
119    ExtendPlane(ref_img_.v_buffer, ref_img_.uv_crop_width,
120                ref_img_.uv_crop_height, ref_img_.uv_width, ref_img_.uv_height,
121                ref_img_.uv_stride, ref_img_.border / 2);
122  }
123
124  void ReferenceCopyFrame() {
125    // Copy img_ to ref_img_ and extend frame borders. This will be used for
126    // verifying extend_fn_ as well as copy_frame_fn_.
127    EXPECT_EQ(ref_img_.frame_size, img_.frame_size);
128    for (int y = 0; y < img_.y_crop_height; ++y) {
129      for (int x = 0; x < img_.y_crop_width; ++x) {
130        ref_img_.y_buffer[x + y * ref_img_.y_stride] =
131            img_.y_buffer[x + y * img_.y_stride];
132      }
133    }
134
135    for (int y = 0; y < img_.uv_crop_height; ++y) {
136      for (int x = 0; x < img_.uv_crop_width; ++x) {
137        ref_img_.u_buffer[x + y * ref_img_.uv_stride] =
138            img_.u_buffer[x + y * img_.uv_stride];
139        ref_img_.v_buffer[x + y * ref_img_.uv_stride] =
140            img_.v_buffer[x + y * img_.uv_stride];
141      }
142    }
143
144    ReferenceExtendBorder();
145  }
146
147  void CompareImages(const YV12_BUFFER_CONFIG actual) {
148    EXPECT_EQ(ref_img_.frame_size, actual.frame_size);
149    EXPECT_EQ(0, memcmp(ref_img_.buffer_alloc, actual.buffer_alloc,
150                        ref_img_.frame_size));
151  }
152
153  YV12_BUFFER_CONFIG img_;
154  YV12_BUFFER_CONFIG ref_img_;
155  YV12_BUFFER_CONFIG cpy_img_;
156  int width_;
157  int height_;
158};
159
160class ExtendBorderTest
161    : public VpxScaleBase,
162      public ::testing::TestWithParam<ExtendFrameBorderFunc> {
163 public:
164  virtual ~ExtendBorderTest() {}
165
166 protected:
167  virtual void SetUp() { extend_fn_ = GetParam(); }
168
169  void ExtendBorder() { ASM_REGISTER_STATE_CHECK(extend_fn_(&img_)); }
170
171  void RunTest() {
172#if ARCH_ARM
173    // Some arm devices OOM when trying to allocate the largest buffers.
174    static const int kNumSizesToTest = 6;
175#else
176    static const int kNumSizesToTest = 7;
177#endif
178    static const int kSizesToTest[] = { 1, 15, 33, 145, 512, 1025, 16383 };
179    for (int h = 0; h < kNumSizesToTest; ++h) {
180      for (int w = 0; w < kNumSizesToTest; ++w) {
181        ASSERT_NO_FATAL_FAILURE(ResetImage(kSizesToTest[w], kSizesToTest[h]));
182        ExtendBorder();
183        ReferenceExtendBorder();
184        CompareImages(img_);
185        DeallocImage();
186      }
187    }
188  }
189
190  ExtendFrameBorderFunc extend_fn_;
191};
192
193TEST_P(ExtendBorderTest, ExtendBorder) { ASSERT_NO_FATAL_FAILURE(RunTest()); }
194
195INSTANTIATE_TEST_CASE_P(C, ExtendBorderTest,
196                        ::testing::Values(vp8_yv12_extend_frame_borders_c));
197
198class CopyFrameTest : public VpxScaleBase,
199                      public ::testing::TestWithParam<CopyFrameFunc> {
200 public:
201  virtual ~CopyFrameTest() {}
202
203 protected:
204  virtual void SetUp() { copy_frame_fn_ = GetParam(); }
205
206  void CopyFrame() {
207    ASM_REGISTER_STATE_CHECK(copy_frame_fn_(&img_, &cpy_img_));
208  }
209
210  void RunTest() {
211#if ARCH_ARM
212    // Some arm devices OOM when trying to allocate the largest buffers.
213    static const int kNumSizesToTest = 6;
214#else
215    static const int kNumSizesToTest = 7;
216#endif
217    static const int kSizesToTest[] = { 1, 15, 33, 145, 512, 1025, 16383 };
218    for (int h = 0; h < kNumSizesToTest; ++h) {
219      for (int w = 0; w < kNumSizesToTest; ++w) {
220        ASSERT_NO_FATAL_FAILURE(ResetImage(kSizesToTest[w], kSizesToTest[h]));
221        ReferenceCopyFrame();
222        CopyFrame();
223        CompareImages(cpy_img_);
224        DeallocImage();
225      }
226    }
227  }
228
229  CopyFrameFunc copy_frame_fn_;
230};
231
232TEST_P(CopyFrameTest, CopyFrame) { ASSERT_NO_FATAL_FAILURE(RunTest()); }
233
234INSTANTIATE_TEST_CASE_P(C, CopyFrameTest,
235                        ::testing::Values(vp8_yv12_copy_frame_c));
236}  // namespace
237