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125 lines
5.1 KiB
125 lines
5.1 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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// record track
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class RecordTrack : public TrackBase {
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public:
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RecordTrack(RecordThread *thread,
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const sp<Client>& client,
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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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audio_session_t sessionId,
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uid_t uid,
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audio_input_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 ~RecordTrack();
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virtual status_t initCheck() const;
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virtual status_t start(AudioSystem::sync_event_t event, audio_session_t triggerSession);
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virtual void stop();
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void destroy();
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virtual void invalidate();
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// clear the buffer overflow flag
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void clearOverflow() { mOverflow = false; }
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// set the buffer overflow flag and return previous value
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bool setOverflow() { bool tmp = mOverflow; mOverflow = true;
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return tmp; }
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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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void handleSyncStartEvent(const sp<SyncEvent>& event);
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void clearSyncStartEvent();
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void updateTrackFrameInfo(int64_t trackFramesReleased,
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int64_t sourceFramesRead,
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uint32_t halSampleRate,
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const ExtendedTimestamp ×tamp);
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virtual bool isFastTrack() const { return (mFlags & AUDIO_INPUT_FLAG_FAST) != 0; }
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private:
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friend class AudioFlinger; // for mState
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RecordTrack(const RecordTrack&);
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RecordTrack& operator = (const RecordTrack&);
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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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bool mOverflow; // overflow on most recent attempt to fill client buffer
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AudioBufferProvider::Buffer mSink; // references client's buffer sink in shared memory
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// sync event triggering actual audio capture. Frames read before this event will
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// be dropped and therefore not read by the application.
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sp<SyncEvent> mSyncStartEvent;
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// number of captured frames to drop after the start sync event has been received.
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// when < 0, maximum frames to drop before starting capture even if sync event is
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// not received
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ssize_t mFramesToDrop;
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// used by resampler to find source frames
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ResamplerBufferProvider *mResamplerBufferProvider;
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// used by the record thread to convert frames to proper destination format
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RecordBufferConverter *mRecordBufferConverter;
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audio_input_flags_t mFlags;
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};
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// playback track, used by PatchPanel
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class PatchRecord : virtual public RecordTrack, public PatchProxyBufferProvider {
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public:
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PatchRecord(RecordThread *recordThread,
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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_input_flags_t flags);
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virtual ~PatchRecord();
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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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sp<ClientProxy> mProxy;
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PatchProxyBufferProvider* mPeerProxy;
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struct timespec mPeerTimeout;
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}; // end of PatchRecord
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