audio policy: add option to use new policy manager

Add build option USE_LEGACY_AUDIO_POLICY to use either new
audio policy manager in local AudioPolicyManager.cpp
or the legacy AudioPolicyManagerBase.cpp via the policy HAL.

New features will be implemented only by the new audio policy manager.
Platform customiization will be by config file or new policy HAL.

AudioPolicyClientImplLegacy.cpp copied from AudioPolicyClientImpl.cpp
AudioPolicyInterfaceImplLegacy.cpp copied from AudioPolicyInterfaceImpl.cpp

New implementations of AudioPolicyInterface and AudioPolicyClient talking directly to
AudioPolicyManager.

Change-Id: I7a320883a1de13de2c9295343e996addf2f3c154

1 files changed, 27 insertions, 3 deletions

diff --git a/services/audiopolicy/AudioPolicyService.cpp b/services/audiopolicy/AudioPolicyService.cpp
index 49145a5..037faa7 100644
--- a/services/audiopolicy/AudioPolicyService.cpp
+++ b/services/audiopolicy/AudioPolicyService.cpp
@@ -60,7 +60,8 @@ namespace {
 // ----------------------------------------------------------------------------
 
 AudioPolicyService::AudioPolicyService()
-    : BnAudioPolicyService(), mpAudioPolicyDev(NULL), mpAudioPolicy(NULL)
+    : BnAudioPolicyService(), mpAudioPolicyDev(NULL), mpAudioPolicy(NULL),
+      mAudioPolicyManager(NULL), mAudioPolicyClient(NULL)
 {
     char value[PROPERTY_VALUE_MAX];
     const struct hw_module_t *module;
@@ -75,12 +76,15 @@ AudioPolicyService::AudioPolicyService()
     mAudioCommandThread = new AudioCommandThread(String8("ApmAudio"), this);
     // start output activity command thread
     mOutputCommandThread = new AudioCommandThread(String8("ApmOutput"), this);
+
+#ifdef USE_LEGACY_AUDIO_POLICY
+    ALOGI("AudioPolicyService CSTOR in legacy mode");
+
     /* instantiate the audio policy manager */
     rc = hw_get_module(AUDIO_POLICY_HARDWARE_MODULE_ID, &module);
     if (rc) {
         return;
     }
-
     rc = audio_policy_dev_open(module, &mpAudioPolicyDev);
     ALOGE_IF(rc, "couldn't open audio policy device (%s)", strerror(-rc));
     if (rc) {
@@ -99,8 +103,13 @@ AudioPolicyService::AudioPolicyService()
     if (rc) {
         return;
     }
-
     ALOGI("Loaded audio policy from %s (%s)", module->name, module->id);
+#else
+    ALOGI("AudioPolicyService CSTOR in new mode");
+
+    mAudioPolicyClient = new AudioPolicyClient(this);
+    mAudioPolicyManager = new AudioPolicyManager(mAudioPolicyClient);
+#endif
 
     // load audio pre processing modules
     if (access(AUDIO_EFFECT_VENDOR_CONFIG_FILE, R_OK) == 0) {
@@ -130,12 +139,17 @@ AudioPolicyService::~AudioPolicyService()
     }
     mInputs.clear();
 
+#ifdef USE_LEGACY_AUDIO_POLICY
     if (mpAudioPolicy != NULL && mpAudioPolicyDev != NULL) {
         mpAudioPolicyDev->destroy_audio_policy(mpAudioPolicyDev, mpAudioPolicy);
     }
     if (mpAudioPolicyDev != NULL) {
         audio_policy_dev_close(mpAudioPolicyDev);
     }
+#else
+    delete mAudioPolicyManager;
+    delete mAudioPolicyClient;
+#endif
 }
 
 
@@ -163,7 +177,11 @@ status_t AudioPolicyService::dumpInternals(int fd)
     char buffer[SIZE];
     String8 result;
 
+#ifdef USE_LEGACY_AUDIO_POLICY
     snprintf(buffer, SIZE, "PolicyManager Interface: %p\n", mpAudioPolicy);
+#else
+    snprintf(buffer, SIZE, "AudioPolicyManager: %p\n", mAudioPolicyManager);
+#endif
     result.append(buffer);
     snprintf(buffer, SIZE, "Command Thread: %p\n", mAudioCommandThread.get());
     result.append(buffer);
@@ -193,9 +211,15 @@ status_t AudioPolicyService::dump(int fd, const Vector<String16>& args __unused)
             mTonePlaybackThread->dump(fd);
         }
 
+#ifdef USE_LEGACY_AUDIO_POLICY
         if (mpAudioPolicy) {
             mpAudioPolicy->dump(mpAudioPolicy, fd);
         }
+#else
+        if (mAudioPolicyManager) {
+            mAudioPolicyManager->dump(fd);
+        }
+#endif
 
         if (locked) mLock.unlock();
     }