253c001f8f
Mannually cherry-picked: 1579133 Use OD_DIVU for small divisions in temporal_filter. 0312229 Replace divides by small values with multiplies. 9c48eec Removing divisions from od_dir_find8() 0950ed8 Merge "Port active map / cyclic refresh fixes to vp10." efefdad Port active map / cyclic refresh fixes to vp10. 1eaf748 Port switch to 9-bit rate cost to aom. 0b1606e Only build deringing code when --enable-dering. e2511e1 Deringing cleanup: don't hardcode the number of levels 8fe5c5d Rename dering_in to od_dering_in to sync with Daala 4eb1380 Makes second filters for 45-degree directions horizontal 7f4c3f5 Removes the superblock variance contribution to the threshold 3dc56f9 Simplifying arithmetic by using multiply+shift cf2aaba Return 0 explicitly for OD_ILOG(0). 49ca22a Use the Daala implementation of OD_ILOG(). 8518724 Fix compiler warning in od_dering.c. 485d6a6 Prevent multiple inclusion of odintrin.h. 51b7a99 Adds the Daala deringing filter as experimental Note that a few of the changes were already in libvpx codebse. Change-Id: I1c32ee7694e5ad22c98b06ff97737cd792cd88ae
71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
/*
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* Copyright (c) 2012 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef TEST_ACM_RANDOM_H_
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#define TEST_ACM_RANDOM_H_
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#include "third_party/googletest/src/include/gtest/gtest.h"
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#include "vpx/vpx_integer.h"
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namespace libvpx_test {
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class ACMRandom {
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public:
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ACMRandom() : random_(DeterministicSeed()) {}
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explicit ACMRandom(int seed) : random_(seed) {}
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void Reset(int seed) { random_.Reseed(seed); }
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uint32_t Rand31(void) {
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return random_.Generate(testing::internal::Random::kMaxRange);
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}
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uint16_t Rand16(void) {
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const uint32_t value =
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random_.Generate(testing::internal::Random::kMaxRange);
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return (value >> 15) & 0xffff;
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}
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int16_t Rand9Signed(void) {
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// Use 9 bits: values between 255 (0x0FF) and -256 (0x100).
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const uint32_t value = random_.Generate(512);
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return static_cast<int16_t>(value) - 256;
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}
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uint8_t Rand8(void) {
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const uint32_t value =
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random_.Generate(testing::internal::Random::kMaxRange);
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// There's a bit more entropy in the upper bits of this implementation.
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return (value >> 23) & 0xff;
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}
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uint8_t Rand8Extremes(void) {
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// Returns a random value near 0 or near 255, to better exercise
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// saturation behavior.
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const uint8_t r = Rand8();
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return r < 128 ? r << 4 : r >> 4;
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}
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int PseudoUniform(int range) { return random_.Generate(range); }
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int operator()(int n) { return PseudoUniform(n); }
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static int DeterministicSeed(void) { return 0xbaba; }
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private:
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testing::internal::Random random_;
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};
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} // namespace libvpx_test
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#endif // TEST_ACM_RANDOM_H_
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