d8dbdf7ead
This is a common time service used by Tungsten for synchronizing
distributed playback.
This is a squashed merge from master-tungsten of the following changes:
commit 43be3231034ff8537fdd84422a7954780038671f
Author: John Grossman <johngro@google.com>
Date: Mon Jun 27 18:59:12 2011 -0700
Move libaah_rtp over from the vendor directory.
Also move factor PipeEvent out into utils.
Change-Id: Id3877c66efe22d771cf3ef4877107e431b828e37
commit a148e2674b1d3cb73289b82b85c333f0a66824a9
Author: John Grossman <johngro@google.com>
Date: Mon Jun 20 17:02:24 2011 -0700
Move the A@H time service into frameworks/base
Change-Id: I5c570cde70e8931e205516cb33517585804ce841
commit 86c94c7d6780fcfa4e1146325706fb78bc30544c
Author: Jason Simmons <jsimmons@google.com>
Date: Mon Jun 20 15:44:31 2011 -0700
Update the service manager UID table to match the new name of the common clock service
Change-Id: I5a65e84e8dff743c69d182e9851e58fc68791564
commit 6ab14c34be8c1b10b1258bdebbba1e52743ff5b9
Author: Jason Simmons <jsimmons@google.com>
Date: Fri Jun 3 18:19:40 2011 -0700
Add tungsten_timesrv to init.rc
Change-Id: I851aa990612440e1df1af992ed6e4d64b54a4951
Change-Id: Id832a0a00d447aa562bb7476902799bfa5bbda8d
Signed-off-by: Mike J. Chen <mjchen@google.com>
Signed-off-by: John Grossman <johngro@google.com>
56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
/*
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* Copyright (C) 2011 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/LinearTransform.h>
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#include <utils/threads.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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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 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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