DO NOT MERGE - 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, 9 insertions, 0 deletions

diff --git a/services/audiopolicy/AudioPolicyInterface.h b/services/audiopolicy/AudioPolicyInterface.h
index 66260e3..bb2deb6 100644
--- a/services/audiopolicy/AudioPolicyInterface.h
+++ b/services/audiopolicy/AudioPolicyInterface.h
@@ -246,6 +246,15 @@ public:
                                      audio_io_handle_t srcOutput,
                                      audio_io_handle_t dstOutput) = 0;
 
+    /* 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) = 0;
+
+    /* Release a patch */
+    virtual status_t releaseAudioPatch(audio_patch_handle_t handle,
+                                       int delayMs) = 0;
+
 };
 
 extern "C" AudioPolicyInterface* createAudioPolicyManager(AudioPolicyClientInterface *clientInterface);