Merge "Add AutoPark template class and use to control FastMixer" into nyc-dev (d2100593) · Commits · e / os / android_frameworks_av

services/audioflinger/AutoPark.h

0 → 100644

+61 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2016 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		namespace android {

		// T is FastMixer or FastCapture
		template<typename T> class AutoPark {
		public:

		// Park the specific FastThread, which can be nullptr, in hot idle if not currently idling
		AutoPark(const sp<T>& fastThread) : mFastThread(fastThread)
		{
		mPreviousCommand = FastThreadState::HOT_IDLE;
		if (fastThread != nullptr) {
		auto sq = mFastThread->sq();
		FastThreadState *state = sq->begin();
		if (!(state->mCommand & FastThreadState::IDLE)) {
		mPreviousCommand = state->mCommand;
		state->mCommand = FastThreadState::HOT_IDLE;
		sq->end();
		sq->push(sq->BLOCK_UNTIL_ACKED);
		} else {
		sq->end(false /didModify/);
		}
		}
		}

		// Remove the FastThread from hot idle if necessary
		~AutoPark()
		{
		if (!(mPreviousCommand & FastThreadState::IDLE)) {
		ALOG_ASSERT(mFastThread != nullptr);
		auto sq = mFastThread->sq();
		FastThreadState *state = sq->begin();
		ALOG_ASSERT(state->mCommand == FastThreadState::HOT_IDLE);
		state->mCommand = mPreviousCommand;
		sq->end();
		sq->push(sq->BLOCK_UNTIL_PUSHED);
		}
		}

		private:
		const sp<T> mFastThread;
		// if !&IDLE, holds the FastThread state to restore after new parameters processed
		FastThreadState::Command mPreviousCommand;
		}; // class AutoPark

		} // namespace

services/audioflinger/Threads.cpp

+6 −72

Original line number	Diff line number	Diff line
		@@ -71,6 +71,8 @@
		#include <cpustats/ThreadCpuUsage.h>
		#endif

		#include "AutoPark.h"

		// ----------------------------------------------------------------------------

		// Note: the following macro is used for extremely verbose logging message. In
		@@ -3283,31 +3285,9 @@ status_t AudioFlinger::PlaybackThread::getTimestamp_l(AudioTimestamp& timestamp)
		status_t AudioFlinger::MixerThread::createAudioPatch_l(const struct audio_patch *patch,
		audio_patch_handle_t *handle)
		{
		// if !&IDLE, holds the FastMixer state to restore after new parameters processed
		FastMixerState::Command previousCommand = FastMixerState::HOT_IDLE;
		if (mFastMixer != 0) {
		FastMixerStateQueue *sq = mFastMixer->sq();
		FastMixerState *state = sq->begin();
		if (!(state->mCommand & FastMixerState::IDLE)) {
		previousCommand = state->mCommand;
		state->mCommand = FastMixerState::HOT_IDLE;
		sq->end();
		sq->push(FastMixerStateQueue::BLOCK_UNTIL_ACKED);
		} else {
		sq->end(false /didModify/);
		}
		}
		status_t status = PlaybackThread::createAudioPatch_l(patch, handle);
		AutoPark<FastMixer> park(mFastMixer);

		if (!(previousCommand & FastMixerState::IDLE)) {
		ALOG_ASSERT(mFastMixer != 0);
		FastMixerStateQueue *sq = mFastMixer->sq();
		FastMixerState *state = sq->begin();
		ALOG_ASSERT(state->mCommand == FastMixerState::HOT_IDLE);
		state->mCommand = previousCommand;
		sq->end();
		sq->push(FastMixerStateQueue::BLOCK_UNTIL_PUSHED);
		}
		status_t status = PlaybackThread::createAudioPatch_l(patch, handle);

		return status;
		}
		@@ -3390,33 +3370,10 @@ status_t AudioFlinger::PlaybackThread::createAudioPatch_l(const struct audio_pat

		status_t AudioFlinger::MixerThread::releaseAudioPatch_l(const audio_patch_handle_t handle)
		{
		// if !&IDLE, holds the FastMixer state to restore after new parameters processed
		FastMixerState::Command previousCommand = FastMixerState::HOT_IDLE;
		if (mFastMixer != 0) {
		FastMixerStateQueue *sq = mFastMixer->sq();
		FastMixerState *state = sq->begin();
		if (!(state->mCommand & FastMixerState::IDLE)) {
		previousCommand = state->mCommand;
		state->mCommand = FastMixerState::HOT_IDLE;
		sq->end();
		sq->push(FastMixerStateQueue::BLOCK_UNTIL_ACKED);
		} else {
		sq->end(false /didModify/);
		}
		}
		AutoPark<FastMixer> park(mFastMixer);

		status_t status = PlaybackThread::releaseAudioPatch_l(handle);

		if (!(previousCommand & FastMixerState::IDLE)) {
		ALOG_ASSERT(mFastMixer != 0);
		FastMixerStateQueue *sq = mFastMixer->sq();
		FastMixerState *state = sq->begin();
		ALOG_ASSERT(state->mCommand == FastMixerState::HOT_IDLE);
		state->mCommand = previousCommand;
		sq->end();
		sq->push(FastMixerStateQueue::BLOCK_UNTIL_PUSHED);
		}

		return status;
		}

		@@ -4464,20 +4421,7 @@ bool AudioFlinger::MixerThread::checkForNewParameter_l(const String8& keyValuePa

		status = NO_ERROR;

		// if !&IDLE, holds the FastMixer state to restore after new parameters processed
		FastMixerState::Command previousCommand = FastMixerState::HOT_IDLE;
		if (mFastMixer != 0) {
		FastMixerStateQueue *sq = mFastMixer->sq();
		FastMixerState *state = sq->begin();
		if (!(state->mCommand & FastMixerState::IDLE)) {
		previousCommand = state->mCommand;
		state->mCommand = FastMixerState::HOT_IDLE;
		sq->end();
		sq->push(FastMixerStateQueue::BLOCK_UNTIL_ACKED);
		} else {
		sq->end(false /didModify/);
		}
		}
		AutoPark<FastMixer> park(mFastMixer);

		AudioParameter param = AudioParameter(keyValuePair);
		int value;
		@@ -4572,16 +4516,6 @@ bool AudioFlinger::MixerThread::checkForNewParameter_l(const String8& keyValuePa
		}
		}

		if (!(previousCommand & FastMixerState::IDLE)) {
		ALOG_ASSERT(mFastMixer != 0);
		FastMixerStateQueue *sq = mFastMixer->sq();
		FastMixerState *state = sq->begin();
		ALOG_ASSERT(state->mCommand == FastMixerState::HOT_IDLE);
		state->mCommand = previousCommand;
		sq->end();
		sq->push(FastMixerStateQueue::BLOCK_UNTIL_PUSHED);
		}

		return reconfig \|\| a2dpDeviceChanged;
		}