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Diffstat (limited to 'include/media/IAudioFlinger.h')
-rw-r--r-- | include/media/IAudioFlinger.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/include/media/IAudioFlinger.h b/include/media/IAudioFlinger.h new file mode 100644 index 0000000..fa8e121 --- /dev/null +++ b/include/media/IAudioFlinger.h @@ -0,0 +1,124 @@ +/* + * 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 <utils/IInterface.h> +#include <media/IAudioTrack.h> +#include <media/IAudioRecord.h> + + +namespace android { + +// ---------------------------------------------------------------------------- + +class IAudioFlinger : public IInterface +{ +public: + DECLARE_META_INTERFACE(AudioFlinger); + + /* create an audio track and registers it with AudioFlinger. + * return null if the track cannot be created. + */ + virtual sp<IAudioTrack> createTrack( + pid_t pid, + int streamType, + uint32_t sampleRate, + int format, + int channelCount, + int bufferCount, + uint32_t flags) = 0; + + virtual sp<IAudioRecord> openRecord( + pid_t pid, + int streamType, + uint32_t sampleRate, + int format, + int channelCount, + int bufferCount, + uint32_t flags) = 0; + + /* query the audio hardware state. This state never changes, + * and therefore can be cached. + */ + virtual uint32_t sampleRate() const = 0; + virtual int channelCount() const = 0; + virtual int format() const = 0; + virtual size_t frameCount() 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(int stream, float value) = 0; + virtual status_t setStreamMute(int stream, bool muted) = 0; + + virtual float streamVolume(int stream) const = 0; + virtual bool streamMute(int stream) const = 0; + + // set/get audio routing + virtual status_t setRouting(int mode, uint32_t routes, uint32_t mask) = 0; + virtual uint32_t getRouting(int mode) const = 0; + + // set/get audio mode + virtual status_t setMode(int mode) = 0; + virtual int getMode() const = 0; + + // mic mute/state + virtual status_t setMicMute(bool state) = 0; + virtual bool getMicMute() const = 0; + + // is a music stream active? + virtual bool isMusicActive() const = 0; + + // pass a generic configuration parameter to libaudio + // Temporary interface, do not use + // TODO: Replace with a more generic key:value get/set mechanism + virtual status_t setParameter(const char* key, const char* value) = 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 |