Refactor AudioPolicyManager

AudioPolicyManager implementation is now split into the
following files:

files managerdefault/Gains.*
  class AudioGain
  class VolumeCurvePoint
  class StreamDescriptor

files managerdefault/Devices.*
  class DeviceDescriptor
  class DeviceVector

files managerdefault/Ports.*
  class AudioPort
  class AudioPortConfig
  class AudioPatch

files managerdefault/IOProfile.*
  class IOProfile

files managerdefault/HwModule.*
  class HwModule

files managerdefault/AudioInputDescriptor.*
  class AudioInputDescriptor

files managerdefault/AudioOutputDescriptor.*
  class AudioOutputDescriptor

All files for libaudiopolicyservice are moved under service/

All files for libaudiopolicymanager are moved under manager/

Change-Id: I43758be1894e37d34db194b51a19ae24461e066e

1 files changed, 524 insertions, 0 deletions

diff --git a/services/audiopolicy/service/AudioPolicyService.h b/services/audiopolicy/service/AudioPolicyService.h
new file mode 100644
index 0000000..0378384
--- /dev/null
+++ b/services/audiopolicy/service/AudioPolicyService.h
@@ -0,0 +1,524 @@
+/*
+ * Copyright (C) 2009 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_AUDIOPOLICYSERVICE_H
+#define ANDROID_AUDIOPOLICYSERVICE_H
+
+#include <cutils/misc.h>
+#include <cutils/config_utils.h>
+#include <cutils/compiler.h>
+#include <utils/String8.h>
+#include <utils/Vector.h>
+#include <utils/SortedVector.h>
+#include <binder/BinderService.h>
+#include <system/audio.h>
+#include <system/audio_policy.h>
+#include <hardware/audio_policy.h>
+#include <media/IAudioPolicyService.h>
+#include <media/ToneGenerator.h>
+#include <media/AudioEffect.h>
+#include <media/AudioPolicy.h>
+#ifdef USE_LEGACY_AUDIO_POLICY
+#include <hardware_legacy/AudioPolicyInterface.h>
+#endif
+#include "AudioPolicyEffects.h"
+#include "managerdefault/AudioPolicyManager.h"
+
+
+namespace android {
+
+// ----------------------------------------------------------------------------
+
+class AudioPolicyService :
+    public BinderService<AudioPolicyService>,
+    public BnAudioPolicyService,
+    public IBinder::DeathRecipient
+{
+    friend class BinderService<AudioPolicyService>;
+
+public:
+    // for BinderService
+    static const char *getServiceName() ANDROID_API { return "media.audio_policy"; }
+
+    virtual status_t    dump(int fd, const Vector<String16>& args);
+
+    //
+    // BnAudioPolicyService (see AudioPolicyInterface for method descriptions)
+    //
+
+    virtual status_t setDeviceConnectionState(audio_devices_t device,
+                                              audio_policy_dev_state_t state,
+                                              const char *device_address,
+                                              const char *device_name);
+    virtual audio_policy_dev_state_t getDeviceConnectionState(
+                                                                audio_devices_t device,
+                                                                const char *device_address);
+    virtual status_t setPhoneState(audio_mode_t state);
+    virtual status_t setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config);
+    virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage);
+    virtual audio_io_handle_t getOutput(audio_stream_type_t stream,
+                                        uint32_t samplingRate = 0,
+                                        audio_format_t format = AUDIO_FORMAT_DEFAULT,
+                                        audio_channel_mask_t channelMask = 0,
+                                        audio_output_flags_t flags =
+                                                AUDIO_OUTPUT_FLAG_NONE,
+                                        const audio_offload_info_t *offloadInfo = NULL);
+    virtual status_t getOutputForAttr(const audio_attributes_t *attr,
+                                      audio_io_handle_t *output,
+                                      audio_session_t session,
+                                      audio_stream_type_t *stream,
+                                      uint32_t samplingRate = 0,
+                                      audio_format_t format = AUDIO_FORMAT_DEFAULT,
+                                      audio_channel_mask_t channelMask = 0,
+                                      audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
+                                      const audio_offload_info_t *offloadInfo = NULL);
+    virtual status_t startOutput(audio_io_handle_t output,
+                                 audio_stream_type_t stream,
+                                 audio_session_t session);
+    virtual status_t stopOutput(audio_io_handle_t output,
+                                audio_stream_type_t stream,
+                                audio_session_t session);
+    virtual void releaseOutput(audio_io_handle_t output,
+                               audio_stream_type_t stream,
+                               audio_session_t session);
+    virtual status_t getInputForAttr(const audio_attributes_t *attr,
+                                     audio_io_handle_t *input,
+                                     audio_session_t session,
+                                     uint32_t samplingRate,
+                                     audio_format_t format,
+                                     audio_channel_mask_t channelMask,
+                                     audio_input_flags_t flags);
+    virtual status_t startInput(audio_io_handle_t input,
+                                audio_session_t session);
+    virtual status_t stopInput(audio_io_handle_t input,
+                               audio_session_t session);
+    virtual void releaseInput(audio_io_handle_t input,
+                              audio_session_t session);
+    virtual status_t initStreamVolume(audio_stream_type_t stream,
+                                      int indexMin,
+                                      int indexMax);
+    virtual status_t setStreamVolumeIndex(audio_stream_type_t stream,
+                                          int index,
+                                          audio_devices_t device);
+    virtual status_t getStreamVolumeIndex(audio_stream_type_t stream,
+                                          int *index,
+                                          audio_devices_t device);
+
+    virtual uint32_t getStrategyForStream(audio_stream_type_t stream);
+    virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream);
+
+    virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc);
+    virtual status_t registerEffect(const effect_descriptor_t *desc,
+                                    audio_io_handle_t io,
+                                    uint32_t strategy,
+                                    int session,
+                                    int id);
+    virtual status_t unregisterEffect(int id);
+    virtual status_t setEffectEnabled(int id, bool enabled);
+    virtual bool isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const;
+    virtual bool isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs = 0) const;
+    virtual bool isSourceActive(audio_source_t source) const;
+
+    virtual status_t queryDefaultPreProcessing(int audioSession,
+                                              effect_descriptor_t *descriptors,
+                                              uint32_t *count);
+    virtual     status_t    onTransact(
+                                uint32_t code,
+                                const Parcel& data,
+                                Parcel* reply,
+                                uint32_t flags);
+
+    // IBinder::DeathRecipient
+    virtual     void        binderDied(const wp<IBinder>& who);
+
+    // RefBase
+    virtual     void        onFirstRef();
+
+    //
+    // Helpers for the struct audio_policy_service_ops implementation.
+    // This is used by the audio policy manager for certain operations that
+    // are implemented by the policy service.
+    //
+    virtual void setParameters(audio_io_handle_t ioHandle,
+                               const char *keyValuePairs,
+                               int delayMs);
+
+    virtual status_t setStreamVolume(audio_stream_type_t stream,
+                                     float volume,
+                                     audio_io_handle_t output,
+                                     int delayMs = 0);
+    virtual status_t startTone(audio_policy_tone_t tone, audio_stream_type_t stream);
+    virtual status_t stopTone();
+    virtual status_t setVoiceVolume(float volume, int delayMs = 0);
+    virtual bool isOffloadSupported(const audio_offload_info_t &config);
+
+    virtual status_t listAudioPorts(audio_port_role_t role,
+                                    audio_port_type_t type,
+                                    unsigned int *num_ports,
+                                    struct audio_port *ports,
+                                    unsigned int *generation);
+    virtual status_t getAudioPort(struct audio_port *port);
+    virtual status_t createAudioPatch(const struct audio_patch *patch,
+                                       audio_patch_handle_t *handle);
+    virtual status_t releaseAudioPatch(audio_patch_handle_t handle);
+    virtual status_t listAudioPatches(unsigned int *num_patches,
+                                      struct audio_patch *patches,
+                                      unsigned int *generation);
+    virtual status_t setAudioPortConfig(const struct audio_port_config *config);
+
+    virtual void registerClient(const sp<IAudioPolicyServiceClient>& client);
+
+    virtual status_t acquireSoundTriggerSession(audio_session_t *session,
+                                           audio_io_handle_t *ioHandle,
+                                           audio_devices_t *device);
+
+    virtual status_t releaseSoundTriggerSession(audio_session_t session);
+
+    virtual audio_mode_t getPhoneState();
+
+    virtual status_t registerPolicyMixes(Vector<AudioMix> mixes, bool registration);
+
+            status_t doStopOutput(audio_io_handle_t output,
+                                  audio_stream_type_t stream,
+                                  audio_session_t session);
+            void doReleaseOutput(audio_io_handle_t output,
+                                 audio_stream_type_t stream,
+                                 audio_session_t session);
+
+            status_t clientCreateAudioPatch(const struct audio_patch *patch,
+                                      audio_patch_handle_t *handle,
+                                      int delayMs);
+            status_t clientReleaseAudioPatch(audio_patch_handle_t handle,
+                                             int delayMs);
+            virtual status_t clientSetAudioPortConfig(const struct audio_port_config *config,
+                                                      int delayMs);
+
+            void removeNotificationClient(uid_t uid);
+            void onAudioPortListUpdate();
+            void doOnAudioPortListUpdate();
+            void onAudioPatchListUpdate();
+            void doOnAudioPatchListUpdate();
+
+private:
+                        AudioPolicyService() ANDROID_API;
+    virtual             ~AudioPolicyService();
+
+            status_t dumpInternals(int fd);
+
+    // Thread used for tone playback and to send audio config commands to audio flinger
+    // For tone playback, using a separate thread is necessary to avoid deadlock with mLock because
+    // startTone() and stopTone() are normally called with mLock locked and requesting a tone start
+    // or stop will cause calls to AudioPolicyService and an attempt to lock mLock.
+    // For audio config commands, it is necessary because audio flinger requires that the calling
+    // process (user) has permission to modify audio settings.
+    class AudioCommandThread : public Thread {
+        class AudioCommand;
+    public:
+
+        // commands for tone AudioCommand
+        enum {
+            START_TONE,
+            STOP_TONE,
+            SET_VOLUME,
+            SET_PARAMETERS,
+            SET_VOICE_VOLUME,
+            STOP_OUTPUT,
+            RELEASE_OUTPUT,
+            CREATE_AUDIO_PATCH,
+            RELEASE_AUDIO_PATCH,
+            UPDATE_AUDIOPORT_LIST,
+            UPDATE_AUDIOPATCH_LIST,
+            SET_AUDIOPORT_CONFIG,
+        };
+
+        AudioCommandThread (String8 name, const wp<AudioPolicyService>& service);
+        virtual             ~AudioCommandThread();
+
+                    status_t    dump(int fd);
+
+        // Thread virtuals
+        virtual     void        onFirstRef();
+        virtual     bool        threadLoop();
+
+                    void        exit();
+                    void        startToneCommand(ToneGenerator::tone_type type,
+                                                 audio_stream_type_t stream);
+                    void        stopToneCommand();
+                    status_t    volumeCommand(audio_stream_type_t stream, float volume,
+                                            audio_io_handle_t output, int delayMs = 0);
+                    status_t    parametersCommand(audio_io_handle_t ioHandle,
+                                            const char *keyValuePairs, int delayMs = 0);
+                    status_t    voiceVolumeCommand(float volume, int delayMs = 0);
+                    void        stopOutputCommand(audio_io_handle_t output,
+                                                  audio_stream_type_t stream,
+                                                  audio_session_t session);
+                    void        releaseOutputCommand(audio_io_handle_t output,
+                                                     audio_stream_type_t stream,
+                                                     audio_session_t session);
+                    status_t    sendCommand(sp<AudioCommand>& command, int delayMs = 0);
+                    void        insertCommand_l(sp<AudioCommand>& command, int delayMs = 0);
+                    status_t    createAudioPatchCommand(const struct audio_patch *patch,
+                                                        audio_patch_handle_t *handle,
+                                                        int delayMs);
+                    status_t    releaseAudioPatchCommand(audio_patch_handle_t handle,
+                                                         int delayMs);
+                    void        updateAudioPortListCommand();
+                    void        updateAudioPatchListCommand();
+                    status_t    setAudioPortConfigCommand(const struct audio_port_config *config,
+                                                          int delayMs);
+                    void        insertCommand_l(AudioCommand *command, int delayMs = 0);
+
+    private:
+        class AudioCommandData;
+
+        // descriptor for requested tone playback event
+        class AudioCommand: public RefBase {
+
+        public:
+            AudioCommand()
+            : mCommand(-1), mStatus(NO_ERROR), mWaitStatus(false) {}
+
+            void dump(char* buffer, size_t size);
+
+            int mCommand;   // START_TONE, STOP_TONE ...
+            nsecs_t mTime;  // time stamp
+            Mutex mLock;    // mutex associated to mCond
+            Condition mCond; // condition for status return
+            status_t mStatus; // command status
+            bool mWaitStatus; // true if caller is waiting for status
+            sp<AudioCommandData> mParam;     // command specific parameter data
+        };
+
+        class AudioCommandData: public RefBase {
+        public:
+            virtual ~AudioCommandData() {}
+        protected:
+            AudioCommandData() {}
+        };
+
+        class ToneData : public AudioCommandData {
+        public:
+            ToneGenerator::tone_type mType; // tone type (START_TONE only)
+            audio_stream_type_t mStream;    // stream type (START_TONE only)
+        };
+
+        class VolumeData : public AudioCommandData {
+        public:
+            audio_stream_type_t mStream;
+            float mVolume;
+            audio_io_handle_t mIO;
+        };
+
+        class ParametersData : public AudioCommandData {
+        public:
+            audio_io_handle_t mIO;
+            String8 mKeyValuePairs;
+        };
+
+        class VoiceVolumeData : public AudioCommandData {
+        public:
+            float mVolume;
+        };
+
+        class StopOutputData : public AudioCommandData {
+        public:
+            audio_io_handle_t mIO;
+            audio_stream_type_t mStream;
+            audio_session_t mSession;
+        };
+
+        class ReleaseOutputData : public AudioCommandData {
+        public:
+            audio_io_handle_t mIO;
+            audio_stream_type_t mStream;
+            audio_session_t mSession;
+        };
+
+        class CreateAudioPatchData : public AudioCommandData {
+        public:
+            struct audio_patch mPatch;
+            audio_patch_handle_t mHandle;
+        };
+
+        class ReleaseAudioPatchData : public AudioCommandData {
+        public:
+            audio_patch_handle_t mHandle;
+        };
+
+        class SetAudioPortConfigData : public AudioCommandData {
+        public:
+            struct audio_port_config mConfig;
+        };
+
+        Mutex   mLock;
+        Condition mWaitWorkCV;
+        Vector < sp<AudioCommand> > mAudioCommands; // list of pending commands
+        ToneGenerator *mpToneGenerator;     // the tone generator
+        sp<AudioCommand> mLastCommand;      // last processed command (used by dump)
+        String8 mName;                      // string used by wake lock fo delayed commands
+        wp<AudioPolicyService> mService;
+    };
+
+    class AudioPolicyClient : public AudioPolicyClientInterface
+    {
+     public:
+        AudioPolicyClient(AudioPolicyService *service) : mAudioPolicyService(service) {}
+        virtual ~AudioPolicyClient() {}
+
+        //
+        // Audio HW module functions
+        //
+
+        // loads a HW module.
+        virtual audio_module_handle_t loadHwModule(const char *name);
+
+        //
+        // Audio output Control functions
+        //
+
+        // opens an audio output with the requested parameters. The parameter values can indicate to use the default values
+        // in case the audio policy manager has no specific requirements for the output being opened.
+        // When the function returns, the parameter values reflect the actual values used by the audio hardware output stream.
+        // The audio policy manager can check if the proposed parameters are suitable or not and act accordingly.
+        virtual status_t openOutput(audio_module_handle_t module,
+                                    audio_io_handle_t *output,
+                                    audio_config_t *config,
+                                    audio_devices_t *devices,
+                                    const String8& address,
+                                    uint32_t *latencyMs,
+                                    audio_output_flags_t flags);
+        // creates a special output that is duplicated to the two outputs passed as arguments. The duplication is performed by
+        // a special mixer thread in the AudioFlinger.
+        virtual audio_io_handle_t openDuplicateOutput(audio_io_handle_t output1, audio_io_handle_t output2);
+        // closes the output stream
+        virtual status_t closeOutput(audio_io_handle_t output);
+        // suspends the output. When an output is suspended, the corresponding audio hardware output stream is placed in
+        // standby and the AudioTracks attached to the mixer thread are still processed but the output mix is discarded.
+        virtual status_t suspendOutput(audio_io_handle_t output);
+        // restores a suspended output.
+        virtual status_t restoreOutput(audio_io_handle_t output);
+
+        //
+        // Audio input Control functions
+        //
+
+        // opens an audio input
+        virtual audio_io_handle_t openInput(audio_module_handle_t module,
+                                            audio_io_handle_t *input,
+                                            audio_config_t *config,
+                                            audio_devices_t *devices,
+                                            const String8& address,
+                                            audio_source_t source,
+                                            audio_input_flags_t flags);
+        // closes an audio input
+        virtual status_t closeInput(audio_io_handle_t input);
+        //
+        // misc control functions
+        //
+
+        // set a stream volume for a particular output. For the same user setting, a given stream type can have different volumes
+        // for each output (destination device) it is attached to.
+        virtual status_t setStreamVolume(audio_stream_type_t stream, float volume, audio_io_handle_t output, int delayMs = 0);
+
+        // invalidate a stream type, causing a reroute to an unspecified new output
+        virtual status_t invalidateStream(audio_stream_type_t stream);
+
+        // function enabling to send proprietary informations directly from audio policy manager to audio hardware interface.
+        virtual void setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs, int delayMs = 0);
+        // function enabling to receive proprietary informations directly from audio hardware interface to audio policy manager.
+        virtual String8 getParameters(audio_io_handle_t ioHandle, const String8& keys);
+
+        // request the playback of a tone on the specified stream: used for instance to replace notification sounds when playing
+        // over a telephony device during a phone call.
+        virtual status_t startTone(audio_policy_tone_t tone, audio_stream_type_t stream);
+        virtual status_t stopTone();
+
+        // set down link audio volume.
+        virtual status_t setVoiceVolume(float volume, int delayMs = 0);
+
+        // move effect to the specified output
+        virtual status_t moveEffects(int session,
+                                         audio_io_handle_t srcOutput,
+                                         audio_io_handle_t dstOutput);
+
+        /* Create a patch between several source and sink ports */
+        virtual status_t createAudioPatch(const struct audio_patch *patch,
+                                           audio_patch_handle_t *handle,
+                                           int delayMs);
+
+        /* Release a patch */
+        virtual status_t releaseAudioPatch(audio_patch_handle_t handle,
+                                           int delayMs);
+
+        /* Set audio port configuration */
+        virtual status_t setAudioPortConfig(const struct audio_port_config *config, int delayMs);
+
+        virtual void onAudioPortListUpdate();
+        virtual void onAudioPatchListUpdate();
+
+        virtual audio_unique_id_t newAudioUniqueId();
+
+     private:
+        AudioPolicyService *mAudioPolicyService;
+    };
+
+    // --- Notification Client ---
+    class NotificationClient : public IBinder::DeathRecipient {
+    public:
+                            NotificationClient(const sp<AudioPolicyService>& service,
+                                                const sp<IAudioPolicyServiceClient>& client,
+                                                uid_t uid);
+        virtual             ~NotificationClient();
+
+                            void        onAudioPortListUpdate();
+                            void        onAudioPatchListUpdate();
+
+                // IBinder::DeathRecipient
+                virtual     void        binderDied(const wp<IBinder>& who);
+
+    private:
+                            NotificationClient(const NotificationClient&);
+                            NotificationClient& operator = (const NotificationClient&);
+
+        const wp<AudioPolicyService>        mService;
+        const uid_t                         mUid;
+        const sp<IAudioPolicyServiceClient> mAudioPolicyServiceClient;
+    };
+
+    // Internal dump utilities.
+    status_t dumpPermissionDenial(int fd);
+
+
+    mutable Mutex mLock;    // prevents concurrent access to AudioPolicy manager functions changing
+                            // device connection state  or routing
+    sp<AudioCommandThread> mAudioCommandThread;     // audio commands thread
+    sp<AudioCommandThread> mTonePlaybackThread;     // tone playback thread
+    sp<AudioCommandThread> mOutputCommandThread;    // process stop and release output
+    struct audio_policy_device *mpAudioPolicyDev;
+    struct audio_policy *mpAudioPolicy;
+    AudioPolicyInterface *mAudioPolicyManager;
+    AudioPolicyClient *mAudioPolicyClient;
+
+    DefaultKeyedVector< uid_t, sp<NotificationClient> >    mNotificationClients;
+    Mutex mNotificationClientsLock;  // protects mNotificationClients
+    // Manage all effects configured in audio_effects.conf
+    sp<AudioPolicyEffects> mAudioPolicyEffects;
+    audio_mode_t mPhoneState;
+};
+
+}; // namespace android
+
+#endif // ANDROID_AUDIOPOLICYSERVICE_H