644 lines
23 KiB
C++
644 lines
23 KiB
C++
/* //device/include/server/AudioFlinger/AudioFlinger.h
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**
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** Copyright 2007, 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 ANDROID_AUDIO_FLINGER_H
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#define ANDROID_AUDIO_FLINGER_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <media/IAudioFlinger.h>
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#include <media/IAudioFlingerClient.h>
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#include <media/IAudioTrack.h>
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#include <media/IAudioRecord.h>
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#include <media/AudioTrack.h>
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#include <utils/Atomic.h>
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#include <utils/Errors.h>
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#include <utils/threads.h>
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#include <utils/MemoryDealer.h>
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#include <utils/KeyedVector.h>
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#include <utils/SortedVector.h>
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#include <utils/Vector.h>
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#include <hardware_legacy/AudioHardwareInterface.h>
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#include "AudioBufferProvider.h"
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namespace android {
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class audio_track_cblk_t;
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class AudioMixer;
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class AudioBuffer;
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// ----------------------------------------------------------------------------
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#define LIKELY( exp ) (__builtin_expect( (exp) != 0, true ))
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#define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false ))
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// ----------------------------------------------------------------------------
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static const nsecs_t kStandbyTimeInNsecs = seconds(3);
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class AudioFlinger : public BnAudioFlinger, public IBinder::DeathRecipient
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{
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public:
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static void instantiate();
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virtual status_t dump(int fd, const Vector<String16>& args);
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// IAudioFlinger interface
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virtual sp<IAudioTrack> createTrack(
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pid_t pid,
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int streamType,
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uint32_t sampleRate,
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int format,
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int channelCount,
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int frameCount,
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uint32_t flags,
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const sp<IMemory>& sharedBuffer,
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status_t *status);
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virtual uint32_t sampleRate(int output) const;
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virtual int channelCount(int output) const;
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virtual int format(int output) const;
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virtual size_t frameCount(int output) const;
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virtual uint32_t latency(int output) const;
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virtual status_t setMasterVolume(float value);
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virtual status_t setMasterMute(bool muted);
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virtual float masterVolume() const;
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virtual bool masterMute() const;
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virtual status_t setStreamVolume(int stream, float value);
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virtual status_t setStreamMute(int stream, bool muted);
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virtual float streamVolume(int stream) const;
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virtual bool streamMute(int stream) const;
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virtual status_t setRouting(int mode, uint32_t routes, uint32_t mask);
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virtual uint32_t getRouting(int mode) const;
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virtual status_t setMode(int mode);
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virtual int getMode() const;
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virtual status_t setMicMute(bool state);
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virtual bool getMicMute() const;
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virtual bool isMusicActive() const;
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virtual bool isA2dpEnabled() const;
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virtual status_t setParameter(const char* key, const char* value);
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virtual void registerClient(const sp<IAudioFlingerClient>& client);
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virtual size_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount);
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virtual void wakeUp() { mWaitWorkCV.broadcast(); }
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// IBinder::DeathRecipient
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virtual void binderDied(const wp<IBinder>& who);
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enum hardware_call_state {
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AUDIO_HW_IDLE = 0,
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AUDIO_HW_INIT,
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AUDIO_HW_OUTPUT_OPEN,
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AUDIO_HW_OUTPUT_CLOSE,
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AUDIO_HW_INPUT_OPEN,
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AUDIO_HW_INPUT_CLOSE,
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AUDIO_HW_STANDBY,
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AUDIO_HW_SET_MASTER_VOLUME,
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AUDIO_HW_GET_ROUTING,
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AUDIO_HW_SET_ROUTING,
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AUDIO_HW_GET_MODE,
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AUDIO_HW_SET_MODE,
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AUDIO_HW_GET_MIC_MUTE,
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AUDIO_HW_SET_MIC_MUTE,
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AUDIO_SET_VOICE_VOLUME,
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AUDIO_SET_PARAMETER,
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};
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// record interface
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virtual sp<IAudioRecord> openRecord(
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pid_t pid,
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int inputSource,
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uint32_t sampleRate,
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int format,
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int channelCount,
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int frameCount,
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uint32_t flags,
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status_t *status);
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virtual status_t onTransact(
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uint32_t code,
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const Parcel& data,
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Parcel* reply,
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uint32_t flags);
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private:
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AudioFlinger();
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virtual ~AudioFlinger();
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void setOutput(int outputType);
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void doSetOutput(int outputType);
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#ifdef WITH_A2DP
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void setA2dpEnabled_l(bool enable);
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void checkA2dpEnabledChange_l();
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#endif
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static bool streamForcedToSpeaker(int streamType);
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// Management of forced route to speaker for certain track types.
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enum force_speaker_command {
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ACTIVE_TRACK_ADDED = 0,
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ACTIVE_TRACK_REMOVED,
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CHECK_ROUTE_RESTORE_TIME,
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FORCE_ROUTE_RESTORE
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};
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void handleForcedSpeakerRoute(int command);
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#ifdef WITH_A2DP
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void handleRouteDisablesA2dp_l(int routes);
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#endif
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// Internal dump utilites.
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status_t dumpPermissionDenial(int fd, const Vector<String16>& args);
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status_t dumpClients(int fd, const Vector<String16>& args);
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status_t dumpInternals(int fd, const Vector<String16>& args);
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// --- Client ---
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class Client : public RefBase {
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public:
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Client(const sp<AudioFlinger>& audioFlinger, pid_t pid);
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virtual ~Client();
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const sp<MemoryDealer>& heap() const;
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pid_t pid() const { return mPid; }
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private:
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Client(const Client&);
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Client& operator = (const Client&);
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sp<AudioFlinger> mAudioFlinger;
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sp<MemoryDealer> mMemoryDealer;
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pid_t mPid;
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};
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class TrackHandle;
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class RecordHandle;
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class AudioRecordThread;
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// --- MixerThread ---
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class MixerThread : public Thread {
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public:
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// --- Track ---
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// base for record and playback
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class TrackBase : public AudioBufferProvider, public RefBase {
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public:
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enum track_state {
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IDLE,
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TERMINATED,
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STOPPED,
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RESUMING,
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ACTIVE,
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PAUSING,
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PAUSED
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};
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enum track_flags {
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STEPSERVER_FAILED = 0x01, // StepServer could not acquire cblk->lock mutex
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SYSTEM_FLAGS_MASK = 0x0000ffffUL,
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// The upper 16 bits are used for track-specific flags.
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};
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TrackBase(const sp<MixerThread>& mixerThread,
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const sp<Client>& client,
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uint32_t sampleRate,
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int format,
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int channelCount,
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int frameCount,
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uint32_t flags,
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const sp<IMemory>& sharedBuffer);
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~TrackBase();
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virtual status_t start() = 0;
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virtual void stop() = 0;
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sp<IMemory> getCblk() const;
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protected:
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friend class MixerThread;
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friend class RecordHandle;
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friend class AudioRecordThread;
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TrackBase(const TrackBase&);
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TrackBase& operator = (const TrackBase&);
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virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer) = 0;
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virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer);
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audio_track_cblk_t* cblk() const {
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return mCblk;
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}
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int format() const {
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return mFormat;
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}
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int channelCount() const ;
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int sampleRate() const;
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void* getBuffer(uint32_t offset, uint32_t frames) const;
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int name() const {
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return mName;
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}
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bool isStopped() const {
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return mState == STOPPED;
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}
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bool isTerminated() const {
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return mState == TERMINATED;
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}
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bool step();
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void reset();
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sp<MixerThread> mMixerThread;
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sp<Client> mClient;
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sp<IMemory> mCblkMemory;
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audio_track_cblk_t* mCblk;
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void* mBuffer;
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void* mBufferEnd;
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uint32_t mFrameCount;
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int mName;
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// we don't really need a lock for these
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int mState;
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int mClientTid;
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uint8_t mFormat;
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uint32_t mFlags;
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};
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// playback track
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class Track : public TrackBase {
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public:
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Track( const sp<MixerThread>& mixerThread,
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const sp<Client>& client,
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int streamType,
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uint32_t sampleRate,
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int format,
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int channelCount,
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int frameCount,
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const sp<IMemory>& sharedBuffer);
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~Track();
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void dump(char* buffer, size_t size);
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virtual status_t start();
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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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void mute(bool);
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void setVolume(float left, float right);
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int type() const {
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return mStreamType;
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}
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protected:
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friend class MixerThread;
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friend class AudioFlinger;
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friend class AudioFlinger::TrackHandle;
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Track(const Track&);
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Track& operator = (const Track&);
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virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer);
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bool isMuted() const {
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return (mMute || mMixerThread->mStreamTypes[mStreamType].mute);
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}
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bool isPausing() const {
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return mState == PAUSING;
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}
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bool isPaused() const {
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return mState == PAUSED;
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}
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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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// we don't really need a lock for these
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float mVolume[2];
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volatile bool mMute;
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// FILLED state is used for suppressing volume ramp at begin of playing
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enum {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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sp<IMemory> mSharedBuffer;
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bool mResetDone;
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int mStreamType;
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}; // end of Track
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// record track
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class RecordTrack : public TrackBase {
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public:
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RecordTrack(const sp<MixerThread>& mixerThread,
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const sp<Client>& client,
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int inputSource,
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uint32_t sampleRate,
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int format,
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int channelCount,
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int frameCount,
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uint32_t flags);
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~RecordTrack();
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virtual status_t start();
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virtual void stop();
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bool overflow() { bool tmp = mOverflow; mOverflow = false; return tmp; }
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bool setOverflow() { bool tmp = mOverflow; mOverflow = true; return tmp; }
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int inputSource() const { return mInputSource; }
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private:
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friend class AudioFlinger;
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friend class AudioFlinger::RecordHandle;
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friend class AudioFlinger::AudioRecordThread;
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friend class MixerThread;
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RecordTrack(const Track&);
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RecordTrack& operator = (const Track&);
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virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer);
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bool mOverflow;
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int mInputSource;
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};
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// playback track
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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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int16_t *mBuffer;
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};
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OutputTrack( const sp<MixerThread>& mixerThread,
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uint32_t sampleRate,
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int format,
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int channelCount,
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int frameCount);
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~OutputTrack();
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virtual status_t start();
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virtual void stop();
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void write(int16_t* data, uint32_t frames);
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bool bufferQueueEmpty() { return (mBufferQueue.size() == 0) ? true : false; }
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private:
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status_t obtainBuffer(AudioBufferProvider::Buffer* buffer);
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void clearBufferQueue();
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sp<MixerThread> mOutputMixerThread;
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Vector < Buffer* > mBufferQueue;
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AudioBufferProvider::Buffer mOutBuffer;
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uint32_t mFramesWritten;
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}; // end of OutputTrack
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MixerThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int outputType);
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virtual ~MixerThread();
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virtual status_t dump(int fd, const Vector<String16>& args);
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// Thread virtuals
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virtual bool threadLoop();
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virtual status_t readyToRun();
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virtual void onFirstRef();
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virtual uint32_t sampleRate() const;
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virtual int channelCount() const;
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virtual int format() const;
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virtual size_t frameCount() const;
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virtual uint32_t latency() const;
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virtual status_t setMasterVolume(float value);
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virtual status_t setMasterMute(bool muted);
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virtual float masterVolume() const;
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virtual bool masterMute() const;
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virtual status_t setStreamVolume(int stream, float value);
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virtual status_t setStreamMute(int stream, bool muted);
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virtual float streamVolume(int stream) const;
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virtual bool streamMute(int stream) const;
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bool isMusicActive_l() const;
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sp<Track> createTrack_l(
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const sp<AudioFlinger::Client>& client,
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int streamType,
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uint32_t sampleRate,
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int format,
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int channelCount,
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int frameCount,
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const sp<IMemory>& sharedBuffer,
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status_t *status);
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void getTracks_l(SortedVector < sp<Track> >& tracks,
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SortedVector < wp<Track> >& activeTracks);
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void putTracks_l(SortedVector < sp<Track> >& tracks,
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SortedVector < wp<Track> >& activeTracks);
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void setOuputTrack(OutputTrack *track) { mOutputTrack = track; }
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struct stream_type_t {
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stream_type_t()
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: volume(1.0f),
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mute(false)
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{
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}
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float volume;
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bool mute;
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};
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private:
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friend class AudioFlinger;
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friend class Track;
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friend class TrackBase;
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friend class RecordTrack;
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MixerThread(const Client&);
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MixerThread& operator = (const MixerThread&);
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status_t addTrack_l(const sp<Track>& track);
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void destroyTrack_l(const sp<Track>& track);
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int getTrackName_l();
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void deleteTrackName_l(int name);
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void addActiveTrack_l(const wp<Track>& t);
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void removeActiveTrack_l(const wp<Track>& t);
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size_t getOutputFrameCount();
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status_t dumpInternals(int fd, const Vector<String16>& args);
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status_t dumpTracks(int fd, const Vector<String16>& args);
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sp<AudioFlinger> mAudioFlinger;
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SortedVector< wp<Track> > mActiveTracks;
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SortedVector< sp<Track> > mTracks;
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stream_type_t mStreamTypes[AudioSystem::NUM_STREAM_TYPES];
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AudioMixer* mAudioMixer;
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AudioStreamOut* mOutput;
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int mOutputType;
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uint32_t mSampleRate;
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size_t mFrameCount;
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int mChannelCount;
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int mFormat;
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int16_t* mMixBuffer;
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float mMasterVolume;
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bool mMasterMute;
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nsecs_t mLastWriteTime;
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int mNumWrites;
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int mNumDelayedWrites;
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bool mStandby;
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bool mInWrite;
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sp <OutputTrack> mOutputTrack;
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};
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friend class AudioBuffer;
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class TrackHandle : public android::BnAudioTrack {
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public:
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TrackHandle(const sp<MixerThread::Track>& track);
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virtual ~TrackHandle();
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virtual status_t start();
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virtual void stop();
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virtual void flush();
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virtual void mute(bool);
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virtual void pause();
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virtual void setVolume(float left, float right);
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virtual sp<IMemory> getCblk() const;
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virtual status_t onTransact(
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uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
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private:
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sp<MixerThread::Track> mTrack;
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};
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friend class Client;
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friend class MixerThread::Track;
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void removeClient(pid_t pid);
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class RecordHandle : public android::BnAudioRecord {
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public:
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RecordHandle(const sp<MixerThread::RecordTrack>& recordTrack);
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virtual ~RecordHandle();
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virtual status_t start();
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virtual void stop();
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virtual sp<IMemory> getCblk() const;
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virtual status_t onTransact(
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uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
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private:
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sp<MixerThread::RecordTrack> mRecordTrack;
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};
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// record thread
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class AudioRecordThread : public Thread
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{
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public:
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AudioRecordThread(AudioHardwareInterface* audioHardware, const sp<AudioFlinger>& audioFlinger);
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virtual ~AudioRecordThread();
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virtual bool threadLoop();
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virtual status_t readyToRun() { return NO_ERROR; }
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virtual void onFirstRef() {}
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status_t start(MixerThread::RecordTrack* recordTrack);
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void stop(MixerThread::RecordTrack* recordTrack);
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void exit();
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status_t dump(int fd, const Vector<String16>& args);
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private:
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AudioRecordThread();
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AudioHardwareInterface *mAudioHardware;
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sp<AudioFlinger> mAudioFlinger;
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sp<MixerThread::RecordTrack> mRecordTrack;
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Mutex mLock;
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Condition mWaitWorkCV;
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Condition mStopped;
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volatile bool mActive;
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status_t mStartStatus;
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};
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friend class AudioRecordThread;
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friend class MixerThread;
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status_t startRecord(MixerThread::RecordTrack* recordTrack);
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void stopRecord(MixerThread::RecordTrack* recordTrack);
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mutable Mutex mHardwareLock;
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mutable Mutex mLock;
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mutable Condition mWaitWorkCV;
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DefaultKeyedVector< pid_t, wp<Client> > mClients;
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sp<MixerThread> mA2dpMixerThread;
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sp<MixerThread> mHardwareMixerThread;
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AudioHardwareInterface* mAudioHardware;
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AudioHardwareInterface* mA2dpAudioInterface;
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sp<AudioRecordThread> mAudioRecordThread;
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bool mA2dpEnabled;
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bool mNotifyA2dpChange;
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mutable int mHardwareStatus;
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SortedVector< wp<IBinder> > mNotificationClients;
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int mForcedSpeakerCount;
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int mA2dpDisableCount;
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// true if A2DP should resume when mA2dpDisableCount returns to zero
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bool mA2dpSuppressed;
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uint32_t mSavedRoute;
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uint32_t mForcedRoute;
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nsecs_t mRouteRestoreTime;
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bool mMusicMuteSaved;
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_AUDIO_FLINGER_H
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