/* * Copyright (c) 2016 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree.
*/
// Set the buffer (excluding padding) to 'value'. void Set(const T value);
// Set the buffer (excluding padding) to the output of ACMRandom function // 'rand_func'. void Set(ACMRandom *rand_class, T (ACMRandom::*rand_func)());
// Set the buffer (excluding padding) to the output of ACMRandom function // 'RandRange' with range 'low' to 'high' which typically must be within // testing::internal::Random::kMaxRange (1u << 31). However, because we want // to allow negative low (and high) values, it is restricted to INT32_MAX // here. void Set(ACMRandom *rand_class, const T low, const T high);
// Copy the contents of Buffer 'a' (excluding padding). void CopyFrom(const Buffer<T> &a);
void DumpBuffer() const;
// Highlight the differences between two buffers if they are the same size. void PrintDifference(const Buffer<T> &a) const;
bool HasPadding() const;
// Sets all the values in the buffer to 'padding_value'. void SetPadding(const T padding_value);
// Checks if all the values (excluding padding) are equal to 'value' if the // Buffers are the same size. bool CheckValues(const T value) const;
// Check that padding matches the expected value or there is no padding. bool CheckPadding() const;
// Compare the non-padding portion of two buffers if they are the same size. bool CheckValues(const Buffer<T> &a) const;
bool Init() { if (raw_buffer_ != nullptr) returnfalse;
EXPECT_GT(width_, 0);
EXPECT_GT(height_, 0);
EXPECT_GE(top_padding_, 0);
EXPECT_GE(left_padding_, 0);
EXPECT_GE(right_padding_, 0);
EXPECT_GE(bottom_padding_, 0);
stride_ = left_padding_ + width_ + right_padding_;
num_elements_ = stride_ * (top_padding_ + height_ + bottom_padding_);
raw_size_ = num_elements_ * sizeof(T); if (alignment_) {
EXPECT_GE(alignment_, sizeof(T)); // Ensure alignment of the first value will be preserved.
EXPECT_EQ((left_padding_ * sizeof(T)) % alignment_, 0u); // Ensure alignment of the subsequent rows will be preserved when there is // a stride. if (stride_ != width_) {
EXPECT_EQ((stride_ * sizeof(T)) % alignment_, 0u);
}
raw_buffer_ = reinterpret_cast<T *>(vpx_memalign(alignment_, raw_size_));
} else {
raw_buffer_ = new (std::nothrow) T[num_elements_];
}
EXPECT_NE(raw_buffer_, nullptr);
SetPadding(std::numeric_limits<T>::max()); return !::testing::Test::HasFailure();
}
constint width_; constint height_; constint top_padding_; constint left_padding_; constint right_padding_; constint bottom_padding_; constunsignedint alignment_;
T padding_value_; int stride_; int raw_size_; int num_elements_;
T *raw_buffer_;
};
template <typename T>
T *Buffer<T>::TopLeftPixel() const { if (!raw_buffer_) return nullptr; return raw_buffer_ + (top_padding_ * stride_) + left_padding_;
}
template <typename T> void Buffer<T>::Set(const T value) { if (!raw_buffer_) return;
T *src = TopLeftPixel(); for (int height = 0; height < height_; ++height) { for (int width = 0; width < width_; ++width) {
src[width] = value;
}
src += stride_;
}
}
template <typename T> void Buffer<T>::Set(ACMRandom *rand_class, T (ACMRandom::*rand_func)()) { if (!raw_buffer_) return;
T *src = TopLeftPixel(); for (int height = 0; height < height_; ++height) { for (int width = 0; width < width_; ++width) {
src[width] = (*rand_class.*rand_func)();
}
src += stride_;
}
}
template <typename T> void Buffer<T>::Set(ACMRandom *rand_class, const T low, const T high) { if (!raw_buffer_) return;
T *src = TopLeftPixel(); for (int height = 0; height < height_; ++height) { for (int width = 0; width < width_; ++width) { // 'low' will be promoted to unsigned given the return type of RandRange. // Store the value as an int to avoid unsigned overflow warnings when // 'low' is negative. const int32_t value = static_cast<int32_t>((*rand_class).RandRange(high - low));
src[width] = static_cast<T>(value + low);
}
src += stride_;
}
}
template <typename T> void Buffer<T>::CopyFrom(const Buffer<T> &a) { if (!raw_buffer_) return; if (!BufferSizesMatch(a)) return;
T *a_src = a.TopLeftPixel();
T *b_src = this->TopLeftPixel(); for (int height = 0; height < height_; ++height) { for (int width = 0; width < width_; ++width) {
b_src[width] = a_src[width];
}
a_src += a.stride();
b_src += this->stride();
}
}
template <typename T> void Buffer<T>::SetPadding(const T padding_value) { if (!raw_buffer_) return;
padding_value_ = padding_value;
T *src = raw_buffer_; for (int i = 0; i < num_elements_; ++i) {
src[i] = padding_value;
}
}
template <typename T> bool Buffer<T>::CheckValues(const T value) const { if (!raw_buffer_) returnfalse;
T *src = TopLeftPixel(); for (int height = 0; height < height_; ++height) { for (int width = 0; width < width_; ++width) { if (value != src[width]) { returnfalse;
}
}
src += stride_;
} returntrue;
}
template <typename T> bool Buffer<T>::CheckPadding() const { if (!raw_buffer_) returnfalse; if (!HasPadding()) returntrue;
// Top padding.
T const *top = raw_buffer_; for (int i = 0; i < stride_ * top_padding_; ++i) { if (padding_value_ != top[i]) { returnfalse;
}
}
// Left padding.
T const *left = TopLeftPixel() - left_padding_; for (int height = 0; height < height_; ++height) { for (int width = 0; width < left_padding_; ++width) { if (padding_value_ != left[width]) { returnfalse;
}
}
left += stride_;
}
// Right padding.
T const *right = TopLeftPixel() + width_; for (int height = 0; height < height_; ++height) { for (int width = 0; width < right_padding_; ++width) { if (padding_value_ != right[width]) { returnfalse;
}
}
right += stride_;
}
// Bottom padding
T const *bottom = raw_buffer_ + (top_padding_ + height_) * stride_; for (int i = 0; i < stride_ * bottom_padding_; ++i) { if (padding_value_ != bottom[i]) { returnfalse;
}
}
returntrue;
}
template <typename T> bool Buffer<T>::CheckValues(const Buffer<T> &a) const { if (!raw_buffer_) returnfalse; if (!BufferSizesMatch(a)) returnfalse;
T *a_src = a.TopLeftPixel();
T *b_src = this->TopLeftPixel(); for (int height = 0; height < height_; ++height) { for (int width = 0; width < width_; ++width) { if (a_src[width] != b_src[width]) { returnfalse;
}
}
a_src += a.stride();
b_src += this->stride();
} returntrue;
}
template <typename T> bool Buffer<T>::BufferSizesMatch(const Buffer<T> &a) const { if (!raw_buffer_) returnfalse; if (a.width_ != this->width_ || a.height_ != this->height_) {
printf( "Reference buffer of size %dx%d does not match this buffer which is " "size %dx%d\n",
a.width_, a.height_, this->width_, this->height_); returnfalse;
}
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