SoundTrigger: allow sound model reloading

Allow reloading a sound model without unloading it before.

Bug: 18308781.
Change-Id: I31c83b81a03ee1c1e80f4339ca62e6d06fb1a33b

2 files changed, 19 insertions, 0 deletions

diff --git a/services/soundtrigger/SoundTriggerHwService.cpp b/services/soundtrigger/SoundTriggerHwService.cpp
index b5aaee3..d3b67f6 100644
--- a/services/soundtrigger/SoundTriggerHwService.cpp
+++ b/services/soundtrigger/SoundTriggerHwService.cpp
@@ -535,6 +535,16 @@ status_t SoundTriggerHwService::Module::loadSoundModel(const sp<IMemory>& modelM
             (struct sound_trigger_sound_model *)modelMemory->pointer();
 
     AutoMutex lock(mLock);
+
+    if (mModels.size() >= mDescriptor.properties.max_sound_models) {
+        if (mModels.size() == 0) {
+            return INVALID_OPERATION;
+        }
+        ALOGW("loadSoundModel() max number of models exceeded %d making room for a new one",
+              mDescriptor.properties.max_sound_models);
+        unloadSoundModel_l(mModels.valueAt(0)->mHandle);
+    }
+
     status_t status = mHwDevice->load_sound_model(mHwDevice,
                                                   sound_model,
                                                   SoundTriggerHwService::soundModelCallback,
@@ -566,6 +576,11 @@ status_t SoundTriggerHwService::Module::unloadSoundModel(sound_model_handle_t ha
     }
 
     AutoMutex lock(mLock);
+    return unloadSoundModel_l(handle);
+}
+
+status_t SoundTriggerHwService::Module::unloadSoundModel_l(sound_model_handle_t handle)
+{
     ssize_t index = mModels.indexOfKey(handle);
     if (index < 0) {
         return BAD_VALUE;
@@ -574,6 +589,7 @@ status_t SoundTriggerHwService::Module::unloadSoundModel(sound_model_handle_t ha
     mModels.removeItem(handle);
     if (model->mState == Model::STATE_ACTIVE) {
         mHwDevice->stop_recognition(mHwDevice, model->mHandle);
+        model->mState = Model::STATE_IDLE;
     }
     AudioSystem::releaseSoundTriggerSession(model->mCaptureSession);
     return mHwDevice->unload_sound_model(mHwDevice, handle);
diff --git a/services/soundtrigger/SoundTriggerHwService.h b/services/soundtrigger/SoundTriggerHwService.h
index d05dacd..2619a5f 100644
--- a/services/soundtrigger/SoundTriggerHwService.h
+++ b/services/soundtrigger/SoundTriggerHwService.h
@@ -141,6 +141,9 @@ public:
 
     private:
 
+       status_t unloadSoundModel_l(sound_model_handle_t handle);
+
+
         Mutex                                  mLock;
         wp<SoundTriggerHwService>              mService;
         struct sound_trigger_hw_device*        mHwDevice;