Refactor PatchPanel

Major changes:

 * since PatchPanel is internal to AudioFlinger, and has the same
   lifetime period, there is no need to use reference counting;

 * setAudioPortConfig moved to AudioFlinger;

 * store Patches in std::map instead of SortedVector, and
   directly--not as pointers;

 * move {create|clear}PatchConnections into Patch class;

 * use __func__ in logging.

Test: test basic audio functionality on taimen
Change-Id: I813fd8430a0e97cd01cc74e6b3b828b10ff5acd4
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index 3c4f500..f28132d 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -159,6 +159,7 @@
       mTotalMemory(0),
       mClientSharedHeapSize(kMinimumClientSharedHeapSizeBytes),
       mGlobalEffectEnableTime(0),
+      mPatchPanel(this),
       mSystemReady(false)
 {
     // unsigned instead of audio_unique_id_use_t, because ++ operator is unavailable for enum
@@ -225,8 +226,6 @@
         }
     }
 
-    mPatchPanel = new PatchPanel(this);
-
     mMode = AUDIO_MODE_NORMAL;
 
     gAudioFlinger = this;
@@ -1928,6 +1927,28 @@
     return mClientSharedHeapSize;
 }
 
+status_t AudioFlinger::setAudioPortConfig(const struct audio_port_config *config)
+{
+    ALOGV(__func__);
+
+    audio_module_handle_t module;
+    if (config->type == AUDIO_PORT_TYPE_DEVICE) {
+        module = config->ext.device.hw_module;
+    } else {
+        module = config->ext.mix.hw_module;
+    }
+
+    Mutex::Autolock _l(mLock);
+    ssize_t index = mAudioHwDevs.indexOfKey(module);
+    if (index < 0) {
+        ALOGW("%s() bad hw module %d", __func__, module);
+        return BAD_VALUE;
+    }
+
+    AudioHwDevice *audioHwDevice = mAudioHwDevs.valueAt(index);
+    return audioHwDevice->hwDevice()->setAudioPortConfig(config);
+}
+
 audio_hw_sync_t AudioFlinger::getAudioHwSyncForSession(audio_session_t sessionId)
 {
     Mutex::Autolock _l(mLock);