26fddcd742
A copy of LinearTransform is moved here. This reverts commit b80f086f69a4bc2e51d1f94ae58d7ba6b20514c4. Test: compile/run Bug: treble cleanup Change-Id: I435cac1f57ded10d434e4354985ad1a1bd3841f3
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __COMMON_CLOCK_H__
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#define __COMMON_CLOCK_H__
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#include <stdint.h>
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#include <utils/Errors.h>
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#include <utils/threads.h>
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#include "LinearTransform.h"
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namespace android {
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class CommonClock {
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public:
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CommonClock();
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bool init(uint64_t local_freq);
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status_t localToCommon(int64_t local, int64_t *common_out) const;
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status_t commonToLocal(int64_t common, int64_t *local_out) const;
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int64_t localDurationToCommonDuration(int64_t localDur) const;
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uint64_t getCommonFreq() const { return kCommonFreq; }
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bool isValid() const { return cur_trans_valid_; }
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status_t setSlew(int64_t change_time, int32_t ppm);
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void setBasis(int64_t local, int64_t common);
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void resetBasis();
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private:
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mutable Mutex lock_;
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int32_t cur_slew_;
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uint32_t local_to_common_freq_numer_;
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uint32_t local_to_common_freq_denom_;
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LinearTransform duration_trans_;
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LinearTransform cur_trans_;
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bool cur_trans_valid_;
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static const uint64_t kCommonFreq = 1000000ull;
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};
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} // namespace android
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#endif // __COMMON_CLOCK_H__
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