266 lines
12 KiB
C++
266 lines
12 KiB
C++
/*
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* Copyright (C) 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_IAUDIOFLINGER_H
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#define ANDROID_IAUDIOFLINGER_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <utils/RefBase.h>
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#include <utils/Errors.h>
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#include <binder/IInterface.h>
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#include <media/IAudioTrack.h>
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#include <media/IAudioRecord.h>
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#include <media/IAudioFlingerClient.h>
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#include <system/audio.h>
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#include <system/audio_policy.h>
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#include <hardware/audio_policy.h>
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#include <hardware/audio_effect.h>
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#include <media/IEffect.h>
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#include <media/IEffectClient.h>
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#include <utils/String8.h>
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namespace android {
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// ----------------------------------------------------------------------------
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class IAudioFlinger : public IInterface
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{
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public:
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DECLARE_META_INTERFACE(AudioFlinger);
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// invariant on exit for all APIs that return an sp<>:
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// (return value != 0) == (*status == NO_ERROR)
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/* create an audio track and registers it with AudioFlinger.
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* return null if the track cannot be created.
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*/
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virtual sp<IAudioTrack> createTrack(
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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 *pFrameCount,
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audio_output_flags_t *flags,
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const sp<IMemory>& sharedBuffer,
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// On successful return, AudioFlinger takes over the handle
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// reference and will release it when the track is destroyed.
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// However on failure, the client is responsible for release.
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audio_io_handle_t output,
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pid_t pid,
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pid_t tid, // -1 means unused, otherwise must be valid non-0
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audio_session_t *sessionId,
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int clientUid,
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status_t *status) = 0;
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virtual sp<IAudioRecord> openRecord(
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// On successful return, AudioFlinger takes over the handle
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// reference and will release it when the track is destroyed.
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// However on failure, the client is responsible for release.
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audio_io_handle_t input,
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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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const String16& callingPackage,
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size_t *pFrameCount,
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audio_input_flags_t *flags,
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pid_t pid,
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pid_t tid, // -1 means unused, otherwise must be valid non-0
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int clientUid,
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audio_session_t *sessionId,
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size_t *notificationFrames,
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sp<IMemory>& cblk,
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sp<IMemory>& buffers, // return value 0 means it follows cblk
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status_t *status) = 0;
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// FIXME Surprisingly, format/latency don't work for input handles
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/* query the audio hardware state. This state never changes,
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* and therefore can be cached.
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*/
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virtual uint32_t sampleRate(audio_io_handle_t ioHandle) const = 0;
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// reserved; formerly channelCount()
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virtual audio_format_t format(audio_io_handle_t output) const = 0;
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virtual size_t frameCount(audio_io_handle_t ioHandle) const = 0;
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// return estimated latency in milliseconds
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virtual uint32_t latency(audio_io_handle_t output) const = 0;
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/* set/get the audio hardware state. This will probably be used by
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* the preference panel, mostly.
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*/
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virtual status_t setMasterVolume(float value) = 0;
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virtual status_t setMasterMute(bool muted) = 0;
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virtual float masterVolume() const = 0;
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virtual bool masterMute() const = 0;
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/* set/get stream type state. This will probably be used by
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* the preference panel, mostly.
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*/
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virtual status_t setStreamVolume(audio_stream_type_t stream, float value,
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audio_io_handle_t output) = 0;
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virtual status_t setStreamMute(audio_stream_type_t stream, bool muted) = 0;
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virtual float streamVolume(audio_stream_type_t stream,
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audio_io_handle_t output) const = 0;
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virtual bool streamMute(audio_stream_type_t stream) const = 0;
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// set audio mode
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virtual status_t setMode(audio_mode_t mode) = 0;
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// mic mute/state
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virtual status_t setMicMute(bool state) = 0;
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virtual bool getMicMute() const = 0;
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virtual status_t setParameters(audio_io_handle_t ioHandle,
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const String8& keyValuePairs) = 0;
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virtual String8 getParameters(audio_io_handle_t ioHandle, const String8& keys)
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const = 0;
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// Register an object to receive audio input/output change and track notifications.
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// For a given calling pid, AudioFlinger disregards any registrations after the first.
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// Thus the IAudioFlingerClient must be a singleton per process.
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virtual void registerClient(const sp<IAudioFlingerClient>& client) = 0;
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// retrieve the audio recording buffer size
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// FIXME This API assumes a route, and so should be deprecated.
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virtual size_t getInputBufferSize(uint32_t sampleRate, audio_format_t format,
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audio_channel_mask_t channelMask) const = 0;
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virtual status_t openOutput(audio_module_handle_t module,
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audio_io_handle_t *output,
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audio_config_t *config,
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audio_devices_t *devices,
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const String8& address,
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uint32_t *latencyMs,
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audio_output_flags_t flags) = 0;
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virtual audio_io_handle_t openDuplicateOutput(audio_io_handle_t output1,
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audio_io_handle_t output2) = 0;
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virtual status_t closeOutput(audio_io_handle_t output) = 0;
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virtual status_t suspendOutput(audio_io_handle_t output) = 0;
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virtual status_t restoreOutput(audio_io_handle_t output) = 0;
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virtual status_t openInput(audio_module_handle_t module,
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audio_io_handle_t *input,
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audio_config_t *config,
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audio_devices_t *device,
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const String8& address,
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audio_source_t source,
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audio_input_flags_t flags) = 0;
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virtual status_t closeInput(audio_io_handle_t input) = 0;
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virtual status_t invalidateStream(audio_stream_type_t stream) = 0;
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virtual status_t setVoiceVolume(float volume) = 0;
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virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames,
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audio_io_handle_t output) const = 0;
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virtual uint32_t getInputFramesLost(audio_io_handle_t ioHandle) const = 0;
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virtual audio_unique_id_t newAudioUniqueId(audio_unique_id_use_t use) = 0;
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virtual void acquireAudioSessionId(audio_session_t audioSession, pid_t pid) = 0;
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virtual void releaseAudioSessionId(audio_session_t audioSession, pid_t pid) = 0;
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virtual status_t queryNumberEffects(uint32_t *numEffects) const = 0;
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virtual status_t queryEffect(uint32_t index, effect_descriptor_t *pDescriptor) const = 0;
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virtual status_t getEffectDescriptor(const effect_uuid_t *pEffectUUID,
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effect_descriptor_t *pDescriptor) const = 0;
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virtual sp<IEffect> createEffect(
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effect_descriptor_t *pDesc,
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const sp<IEffectClient>& client,
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int32_t priority,
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// AudioFlinger doesn't take over handle reference from client
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audio_io_handle_t output,
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audio_session_t sessionId,
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const String16& callingPackage,
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status_t *status,
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int *id,
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int *enabled) = 0;
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virtual status_t moveEffects(audio_session_t session, audio_io_handle_t srcOutput,
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audio_io_handle_t dstOutput) = 0;
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virtual audio_module_handle_t loadHwModule(const char *name) = 0;
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// helpers for android.media.AudioManager.getProperty(), see description there for meaning
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// FIXME move these APIs to AudioPolicy to permit a more accurate implementation
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// that looks on primary device for a stream with fast flag, primary flag, or first one.
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virtual uint32_t getPrimaryOutputSamplingRate() = 0;
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virtual size_t getPrimaryOutputFrameCount() = 0;
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// Intended for AudioService to inform AudioFlinger of device's low RAM attribute,
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// and should be called at most once. For a definition of what "low RAM" means, see
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// android.app.ActivityManager.isLowRamDevice().
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virtual status_t setLowRamDevice(bool isLowRamDevice) = 0;
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/* List available audio ports and their attributes */
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virtual status_t listAudioPorts(unsigned int *num_ports,
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struct audio_port *ports) = 0;
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/* Get attributes for a given audio port */
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virtual status_t getAudioPort(struct audio_port *port) = 0;
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/* Create an audio patch between several source and sink ports */
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virtual status_t createAudioPatch(const struct audio_patch *patch,
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audio_patch_handle_t *handle) = 0;
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/* Release an audio patch */
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virtual status_t releaseAudioPatch(audio_patch_handle_t handle) = 0;
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/* List existing audio patches */
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virtual status_t listAudioPatches(unsigned int *num_patches,
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struct audio_patch *patches) = 0;
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/* Set audio port configuration */
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virtual status_t setAudioPortConfig(const struct audio_port_config *config) = 0;
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/* Get the HW synchronization source used for an audio session */
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virtual audio_hw_sync_t getAudioHwSyncForSession(audio_session_t sessionId) = 0;
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/* Indicate JAVA services are ready (scheduling, power management ...) */
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virtual status_t systemReady() = 0;
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// Returns the number of frames per audio HAL buffer.
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virtual size_t frameCountHAL(audio_io_handle_t ioHandle) const = 0;
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};
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// ----------------------------------------------------------------------------
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class BnAudioFlinger : public BnInterface<IAudioFlinger>
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{
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public:
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virtual status_t onTransact( uint32_t code,
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const Parcel& data,
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Parcel* reply,
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uint32_t flags = 0);
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_IAUDIOFLINGER_H
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