audioflinger: first patch panel implementation.

Added a new PatchPanel subclass to AudioFlinger
to handle audio ports and audio patches configuration
and connection.
The first implementation does not add new functionnality.
AudioPolicyManager uses patch panel interface to control
device routing.
AudioFlinger:
- Added PatchPanel class. The first implementation does not
add new functionnality. PatchPanel handles routing commands
for audio HAL after 3.0 or converts to setParameters for audio
HALs before 3.0.
- Added config events to ThreadBase to control synchronized
audio patch connection.
AudioPolicyManager:
- Use PatchPanel API to control device selection isntead of setParameters.
- New base class AudioPort common to audio device descriptors
and input output stream profiles. This class is RefBase and groups
attributes common to audio ports.
- Use same device selection flow for input as for outputs:
 getNewInputDevice -> getDeviceForInptusiource -> setInputDevice

Change-Id: Idaa5a883b19a45816651c58cac697640dc717cd9

1 files changed, 13 insertions, 24 deletions

diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index 3d7a562..29dc6b2 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -225,41 +225,24 @@ public:
 
     /* List available audio ports and their attributes */
     virtual status_t listAudioPorts(unsigned int *num_ports,
-                                    struct audio_port *ports)
-    {
-        return INVALID_OPERATION;
-    }
+                                    struct audio_port *ports);
 
     /* Get attributes for a given audio port */
-    virtual status_t getAudioPort(struct audio_port *port)
-    {
-        return INVALID_OPERATION;
-    }
+    virtual status_t getAudioPort(struct audio_port *port);
 
     /* Create an audio patch between several source and sink ports */
     virtual status_t createAudioPatch(const struct audio_patch *patch,
-                                       audio_patch_handle_t *handle)
-    {
-        return INVALID_OPERATION;
-    }
+                                       audio_patch_handle_t *handle);
 
     /* Release an audio patch */
-    virtual status_t releaseAudioPatch(audio_patch_handle_t handle)
-    {
-        return INVALID_OPERATION;
-    }
+    virtual status_t releaseAudioPatch(audio_patch_handle_t handle);
 
     /* List existing audio patches */
     virtual status_t listAudioPatches(unsigned int *num_patches,
-                                      struct audio_patch *patches)
-    {
-        return INVALID_OPERATION;
-    }
+                                      struct audio_patch *patches);
+
     /* Set audio port configuration */
-    virtual status_t setAudioPortConfig(const struct audio_port_config *config)
-    {
-        return INVALID_OPERATION;
-    }
+    virtual status_t setAudioPortConfig(const struct audio_port_config *config);
 
     virtual     status_t    onTransact(
                                 uint32_t code,
@@ -435,6 +418,8 @@ private:
 
 #include "Effects.h"
 
+#include "PatchPanel.h"
+
     // server side of the client's IAudioTrack
     class TrackHandle : public android::BnAudioTrack {
     public:
@@ -542,6 +527,8 @@ private:
 
         const char *moduleName() const { return mModuleName; }
         audio_hw_device_t *hwDevice() const { return mHwDevice; }
+        uint32_t version() const { return mHwDevice->common.version; }
+
     private:
         const char * const mModuleName;
         audio_hw_device_t * const mHwDevice;
@@ -702,6 +689,8 @@ private:
     bool    mIsLowRamDevice;
     bool    mIsDeviceTypeKnown;
     nsecs_t mGlobalEffectEnableTime;  // when a global effect was last enabled
+
+    sp<PatchPanel> mPatchPanel;
 };
 
 #undef INCLUDING_FROM_AUDIOFLINGER_H