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269 lines
12 KiB
269 lines
12 KiB
/*
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**
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** Copyright 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 INCLUDING_FROM_AUDIOFLINGER_H
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#error This header file should only be included from AudioFlinger.h
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#endif
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// playback track
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class Track : public TrackBase, public VolumeProvider {
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public:
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Track( PlaybackThread *thread,
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const sp<Client>& client,
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audio_stream_type_t streamType,
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uint32_t sampleRate,
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audio_format_t format,
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audio_channel_mask_t channelMask,
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size_t frameCount,
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void *buffer,
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const sp<IMemory>& sharedBuffer,
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audio_session_t sessionId,
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uid_t uid,
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audio_output_flags_t flags,
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track_type type,
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audio_port_handle_t portId = AUDIO_PORT_HANDLE_NONE);
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virtual ~Track();
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virtual status_t initCheck() const;
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static void appendDumpHeader(String8& result);
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void dump(char* buffer, size_t size, bool active);
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virtual status_t start(AudioSystem::sync_event_t event =
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AudioSystem::SYNC_EVENT_NONE,
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audio_session_t triggerSession = AUDIO_SESSION_NONE);
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virtual void stop();
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void pause();
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void flush();
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void destroy();
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int name() const { return mName; }
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virtual uint32_t sampleRate() const;
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audio_stream_type_t streamType() const {
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return mStreamType;
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}
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bool isOffloaded() const
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{ return (mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0; }
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bool isDirect() const { return (mFlags & AUDIO_OUTPUT_FLAG_DIRECT) != 0; }
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bool isOffloadedOrDirect() const { return (mFlags
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& (AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD
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| AUDIO_OUTPUT_FLAG_DIRECT)) != 0; }
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status_t setParameters(const String8& keyValuePairs);
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status_t attachAuxEffect(int EffectId);
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void setAuxBuffer(int EffectId, int32_t *buffer);
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int32_t *auxBuffer() const { return mAuxBuffer; }
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void setMainBuffer(int16_t *buffer) { mMainBuffer = buffer; }
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int16_t *mainBuffer() const { return mMainBuffer; }
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int auxEffectId() const { return mAuxEffectId; }
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virtual status_t getTimestamp(AudioTimestamp& timestamp);
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void signal();
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// implement FastMixerState::VolumeProvider interface
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virtual gain_minifloat_packed_t getVolumeLR();
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virtual status_t setSyncEvent(const sp<SyncEvent>& event);
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virtual bool isFastTrack() const { return (mFlags & AUDIO_OUTPUT_FLAG_FAST) != 0; }
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// implement volume handling.
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VolumeShaper::Status applyVolumeShaper(
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const sp<VolumeShaper::Configuration>& configuration,
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const sp<VolumeShaper::Operation>& operation);
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sp<VolumeShaper::State> getVolumeShaperState(int id);
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sp<VolumeHandler> getVolumeHandler() { return mVolumeHandler; }
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protected:
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// for numerous
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friend class PlaybackThread;
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friend class MixerThread;
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friend class DirectOutputThread;
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friend class OffloadThread;
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Track(const Track&);
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Track& operator = (const Track&);
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// AudioBufferProvider interface
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virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer);
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// releaseBuffer() not overridden
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// ExtendedAudioBufferProvider interface
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virtual size_t framesReady() const;
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virtual int64_t framesReleased() const;
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virtual void onTimestamp(const ExtendedTimestamp ×tamp);
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bool isPausing() const { return mState == PAUSING; }
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bool isPaused() const { return mState == PAUSED; }
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bool isResuming() const { return mState == RESUMING; }
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bool isReady() const;
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void setPaused() { mState = PAUSED; }
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void reset();
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bool isFlushPending() const { return mFlushHwPending; }
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void flushAck();
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bool isResumePending();
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void resumeAck();
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void updateTrackFrameInfo(int64_t trackFramesReleased, int64_t sinkFramesWritten,
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const ExtendedTimestamp &timeStamp);
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sp<IMemory> sharedBuffer() const { return mSharedBuffer; }
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// framesWritten is cumulative, never reset, and is shared all tracks
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// audioHalFrames is derived from output latency
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// FIXME parameters not needed, could get them from the thread
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bool presentationComplete(int64_t framesWritten, size_t audioHalFrames);
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void signalClientFlag(int32_t flag);
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public:
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void triggerEvents(AudioSystem::sync_event_t type);
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virtual void invalidate();
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void disable();
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int fastIndex() const { return mFastIndex; }
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protected:
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// FILLED state is used for suppressing volume ramp at begin of playing
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enum {FS_INVALID, FS_FILLING, FS_FILLED, FS_ACTIVE};
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mutable uint8_t mFillingUpStatus;
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int8_t mRetryCount;
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// see comment at AudioFlinger::PlaybackThread::Track::~Track for why this can't be const
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sp<IMemory> mSharedBuffer;
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bool mResetDone;
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const audio_stream_type_t mStreamType;
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int mName; // track name on the normal mixer,
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// allocated statically at track creation time,
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// and is even allocated (though unused) for fast tracks
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// FIXME don't allocate track name for fast tracks
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int16_t *mMainBuffer;
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int32_t *mAuxBuffer;
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int mAuxEffectId;
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bool mHasVolumeController;
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size_t mPresentationCompleteFrames; // number of frames written to the
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// audio HAL when this track will be fully rendered
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// zero means not monitoring
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// access these three variables only when holding thread lock.
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LinearMap<int64_t> mFrameMap; // track frame to server frame mapping
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ExtendedTimestamp mSinkTimestamp;
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sp<VolumeHandler> mVolumeHandler; // handles multiple VolumeShaper configs and operations
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private:
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// The following fields are only for fast tracks, and should be in a subclass
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int mFastIndex; // index within FastMixerState::mFastTracks[];
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// either mFastIndex == -1 if not isFastTrack()
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// or 0 < mFastIndex < FastMixerState::kMaxFast because
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// index 0 is reserved for normal mixer's submix;
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// index is allocated statically at track creation time
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// but the slot is only used if track is active
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FastTrackUnderruns mObservedUnderruns; // Most recently observed value of
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// mFastMixerDumpState.mTracks[mFastIndex].mUnderruns
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volatile float mCachedVolume; // combined master volume and stream type volume;
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// 'volatile' means accessed without lock or
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// barrier, but is read/written atomically
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sp<AudioTrackServerProxy> mAudioTrackServerProxy;
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bool mResumeToStopping; // track was paused in stopping state.
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bool mFlushHwPending; // track requests for thread flush
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audio_output_flags_t mFlags;
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}; // end of Track
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// playback track, used by DuplicatingThread
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class OutputTrack : public Track {
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public:
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class Buffer : public AudioBufferProvider::Buffer {
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public:
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void *mBuffer;
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};
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OutputTrack(PlaybackThread *thread,
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DuplicatingThread *sourceThread,
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uint32_t sampleRate,
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audio_format_t format,
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audio_channel_mask_t channelMask,
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size_t frameCount,
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uid_t uid);
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virtual ~OutputTrack();
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virtual status_t start(AudioSystem::sync_event_t event =
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AudioSystem::SYNC_EVENT_NONE,
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audio_session_t triggerSession = AUDIO_SESSION_NONE);
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virtual void stop();
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bool write(void* data, uint32_t frames);
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bool bufferQueueEmpty() const { return mBufferQueue.size() == 0; }
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bool isActive() const { return mActive; }
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const wp<ThreadBase>& thread() const { return mThread; }
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private:
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status_t obtainBuffer(AudioBufferProvider::Buffer* buffer,
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uint32_t waitTimeMs);
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void clearBufferQueue();
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void restartIfDisabled();
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// Maximum number of pending buffers allocated by OutputTrack::write()
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static const uint8_t kMaxOverFlowBuffers = 10;
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Vector < Buffer* > mBufferQueue;
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AudioBufferProvider::Buffer mOutBuffer;
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bool mActive;
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DuplicatingThread* const mSourceThread; // for waitTimeMs() in write()
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sp<AudioTrackClientProxy> mClientProxy;
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}; // end of OutputTrack
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// playback track, used by PatchPanel
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class PatchTrack : public Track, public PatchProxyBufferProvider {
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public:
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PatchTrack(PlaybackThread *playbackThread,
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audio_stream_type_t streamType,
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uint32_t sampleRate,
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audio_channel_mask_t channelMask,
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audio_format_t format,
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size_t frameCount,
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void *buffer,
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audio_output_flags_t flags);
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virtual ~PatchTrack();
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virtual status_t start(AudioSystem::sync_event_t event =
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AudioSystem::SYNC_EVENT_NONE,
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audio_session_t triggerSession = AUDIO_SESSION_NONE);
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// AudioBufferProvider interface
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virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer);
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virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer);
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// PatchProxyBufferProvider interface
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virtual status_t obtainBuffer(Proxy::Buffer* buffer,
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const struct timespec *timeOut = NULL);
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virtual void releaseBuffer(Proxy::Buffer* buffer);
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void setPeerProxy(PatchProxyBufferProvider *proxy) { mPeerProxy = proxy; }
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private:
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void restartIfDisabled();
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sp<ClientProxy> mProxy;
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PatchProxyBufferProvider* mPeerProxy;
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struct timespec mPeerTimeout;
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}; // end of PatchTrack
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