| /* |
| * Copyright (C) 2007 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. |
| */ |
| |
| #ifndef ANDROID_IAUDIOFLINGER_H |
| #define ANDROID_IAUDIOFLINGER_H |
| |
| #include <stdint.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include <utils/RefBase.h> |
| #include <utils/Errors.h> |
| #include <binder/IInterface.h> |
| #include <media/IAudioTrack.h> |
| #include <media/IAudioRecord.h> |
| #include <media/IAudioFlingerClient.h> |
| #include <system/audio.h> |
| #include <system/audio_policy.h> |
| #include <hardware/audio_policy.h> |
| #include <hardware/audio_effect.h> |
| #include <media/IEffect.h> |
| #include <media/IEffectClient.h> |
| #include <utils/String8.h> |
| |
| namespace android { |
| |
| // ---------------------------------------------------------------------------- |
| |
| class IAudioFlinger : public IInterface |
| { |
| public: |
| DECLARE_META_INTERFACE(AudioFlinger); |
| |
| // or-able bits shared by createTrack and openRecord, but not all combinations make sense |
| enum { |
| TRACK_DEFAULT = 0, // client requests a default AudioTrack |
| TRACK_TIMED = 1, // client requests a TimedAudioTrack |
| TRACK_FAST = 2, // client requests a fast AudioTrack or AudioRecord |
| }; |
| typedef uint32_t track_flags_t; |
| |
| /* create an audio track and registers it with AudioFlinger. |
| * return null if the track cannot be created. |
| */ |
| virtual sp<IAudioTrack> createTrack( |
| audio_stream_type_t streamType, |
| uint32_t sampleRate, |
| audio_format_t format, |
| audio_channel_mask_t channelMask, |
| size_t frameCount, |
| track_flags_t *flags, |
| const sp<IMemory>& sharedBuffer, |
| audio_io_handle_t output, |
| pid_t tid, // -1 means unused, otherwise must be valid non-0 |
| int *sessionId, |
| status_t *status) = 0; |
| |
| virtual sp<IAudioRecord> openRecord( |
| audio_io_handle_t input, |
| uint32_t sampleRate, |
| audio_format_t format, |
| audio_channel_mask_t channelMask, |
| size_t frameCount, |
| track_flags_t flags, |
| pid_t tid, // -1 means unused, otherwise must be valid non-0 |
| int *sessionId, |
| status_t *status) = 0; |
| |
| /* query the audio hardware state. This state never changes, |
| * and therefore can be cached. |
| */ |
| virtual uint32_t sampleRate(audio_io_handle_t output) const = 0; |
| #if 0 |
| virtual int channelCount(audio_io_handle_t output) const = 0; |
| #endif |
| virtual audio_format_t format(audio_io_handle_t output) const = 0; |
| virtual size_t frameCount(audio_io_handle_t output) const = 0; |
| |
| // return estimated latency in milliseconds |
| virtual uint32_t latency(audio_io_handle_t output) const = 0; |
| |
| /* set/get the audio hardware state. This will probably be used by |
| * the preference panel, mostly. |
| */ |
| virtual status_t setMasterVolume(float value) = 0; |
| virtual status_t setMasterMute(bool muted) = 0; |
| |
| virtual float masterVolume() const = 0; |
| virtual bool masterMute() const = 0; |
| |
| /* set/get stream type state. This will probably be used by |
| * the preference panel, mostly. |
| */ |
| virtual status_t setStreamVolume(audio_stream_type_t stream, float value, |
| audio_io_handle_t output) = 0; |
| virtual status_t setStreamMute(audio_stream_type_t stream, bool muted) = 0; |
| |
| virtual float streamVolume(audio_stream_type_t stream, |
| audio_io_handle_t output) const = 0; |
| virtual bool streamMute(audio_stream_type_t stream) const = 0; |
| |
| // set audio mode |
| virtual status_t setMode(audio_mode_t mode) = 0; |
| |
| // mic mute/state |
| virtual status_t setMicMute(bool state) = 0; |
| virtual bool getMicMute() const = 0; |
| |
| virtual status_t setParameters(audio_io_handle_t ioHandle, |
| const String8& keyValuePairs) = 0; |
| virtual String8 getParameters(audio_io_handle_t ioHandle, const String8& keys) |
| const = 0; |
| |
| // register a current process for audio output change notifications |
| virtual void registerClient(const sp<IAudioFlingerClient>& client) = 0; |
| |
| // retrieve the audio recording buffer size |
| virtual size_t getInputBufferSize(uint32_t sampleRate, audio_format_t format, |
| audio_channel_mask_t channelMask) const = 0; |
| |
| virtual audio_io_handle_t openOutput(audio_module_handle_t module, |
| audio_devices_t *pDevices, |
| uint32_t *pSamplingRate, |
| audio_format_t *pFormat, |
| audio_channel_mask_t *pChannelMask, |
| uint32_t *pLatencyMs, |
| audio_output_flags_t flags) = 0; |
| virtual audio_io_handle_t openDuplicateOutput(audio_io_handle_t output1, |
| audio_io_handle_t output2) = 0; |
| virtual status_t closeOutput(audio_io_handle_t output) = 0; |
| virtual status_t suspendOutput(audio_io_handle_t output) = 0; |
| virtual status_t restoreOutput(audio_io_handle_t output) = 0; |
| |
| virtual audio_io_handle_t openInput(audio_module_handle_t module, |
| audio_devices_t *pDevices, |
| uint32_t *pSamplingRate, |
| audio_format_t *pFormat, |
| audio_channel_mask_t *pChannelMask) = 0; |
| virtual status_t closeInput(audio_io_handle_t input) = 0; |
| |
| virtual status_t setStreamOutput(audio_stream_type_t stream, audio_io_handle_t output) = 0; |
| |
| virtual status_t setVoiceVolume(float volume) = 0; |
| |
| virtual status_t getRenderPosition(size_t *halFrames, size_t *dspFrames, |
| audio_io_handle_t output) const = 0; |
| |
| virtual size_t getInputFramesLost(audio_io_handle_t ioHandle) const = 0; |
| |
| virtual int newAudioSessionId() = 0; |
| |
| virtual void acquireAudioSessionId(int audioSession) = 0; |
| virtual void releaseAudioSessionId(int audioSession) = 0; |
| |
| virtual status_t queryNumberEffects(uint32_t *numEffects) const = 0; |
| |
| virtual status_t queryEffect(uint32_t index, effect_descriptor_t *pDescriptor) const = 0; |
| |
| virtual status_t getEffectDescriptor(const effect_uuid_t *pEffectUUID, |
| effect_descriptor_t *pDescriptor) const = 0; |
| |
| virtual sp<IEffect> createEffect( |
| effect_descriptor_t *pDesc, |
| const sp<IEffectClient>& client, |
| int32_t priority, |
| audio_io_handle_t output, |
| int sessionId, |
| status_t *status, |
| int *id, |
| int *enabled) = 0; |
| |
| virtual status_t moveEffects(int session, audio_io_handle_t srcOutput, |
| audio_io_handle_t dstOutput) = 0; |
| |
| virtual audio_module_handle_t loadHwModule(const char *name) = 0; |
| |
| // helpers for android.media.AudioManager.getProperty(), see description there for meaning |
| // FIXME move these APIs to AudioPolicy to permit a more accurate implementation |
| // that looks on primary device for a stream with fast flag, primary flag, or first one. |
| virtual uint32_t getPrimaryOutputSamplingRate() = 0; |
| virtual size_t getPrimaryOutputFrameCount() = 0; |
| |
| }; |
| |
| |
| // ---------------------------------------------------------------------------- |
| |
| class BnAudioFlinger : public BnInterface<IAudioFlinger> |
| { |
| public: |
| virtual status_t onTransact( uint32_t code, |
| const Parcel& data, |
| Parcel* reply, |
| uint32_t flags = 0); |
| }; |
| |
| // ---------------------------------------------------------------------------- |
| |
| }; // namespace android |
| |
| #endif // ANDROID_IAUDIOFLINGER_H |
