Add support for treble sound trigger HAL
First implementation of Treble HAL in sound trigger hardware service.
If ENABLE_TREBLE build option is true, the treble HAL and HW
sevice is used. Otherwise the legacy HW module is loaded.
Bug: 30222631
Change-Id: Ibe5be680b7b7a3b261dd62913869e0bb412f438b
diff --git a/services/soundtrigger/SoundTriggerHalInterface.h b/services/soundtrigger/SoundTriggerHalInterface.h
new file mode 100644
index 0000000..c083195
--- /dev/null
+++ b/services/soundtrigger/SoundTriggerHalInterface.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_SOUNDTRIGGER_HAL_INTERFACE_H
+#define ANDROID_HARDWARE_SOUNDTRIGGER_HAL_INTERFACE_H
+
+#include <utils/RefBase.h>
+#include <system/sound_trigger.h>
+#include <hardware/sound_trigger.h>
+
+namespace android {
+
+class SoundTriggerHalInterface : public virtual RefBase
+{
+public:
+ /* get a sound trigger HAL instance */
+ static sp<SoundTriggerHalInterface> connectModule(const char *moduleName);
+
+ virtual ~SoundTriggerHalInterface() {}
+
+ virtual int getProperties(struct sound_trigger_properties *properties) = 0;
+
+ /*
+ * Load a sound model. Once loaded, recognition of this model can be started and stopped.
+ * Only one active recognition per model at a time. The SoundTrigger service will handle
+ * concurrent recognition requests by different users/applications on the same model.
+ * The implementation returns a unique handle used by other functions (unload_sound_model(),
+ * start_recognition(), etc...
+ */
+ virtual int loadSoundModel(struct sound_trigger_sound_model *sound_model,
+ sound_model_callback_t callback,
+ void *cookie,
+ sound_model_handle_t *handle) = 0;
+
+ /*
+ * Unload a sound model. A sound model can be unloaded to make room for a new one to overcome
+ * implementation limitations.
+ */
+ virtual int unloadSoundModel(sound_model_handle_t handle) = 0;
+
+ /* Start recognition on a given model. Only one recognition active at a time per model.
+ * Once recognition succeeds of fails, the callback is called.
+ * TODO: group recognition configuration parameters into one struct and add key phrase options.
+ */
+ virtual int startRecognition(sound_model_handle_t handle,
+ const struct sound_trigger_recognition_config *config,
+ recognition_callback_t callback,
+ void *cookie) = 0;
+
+ /* Stop recognition on a given model.
+ * The implementation does not have to call the callback when stopped via this method.
+ */
+ virtual int stopRecognition(sound_model_handle_t handle) = 0;
+
+ /* Stop recognition on all models.
+ * Only supported for device api versions SOUND_TRIGGER_DEVICE_API_VERSION_1_1 or above.
+ * If no implementation is provided, stop_recognition will be called for each running model.
+ */
+ virtual int stopAllRecognitions() = 0;
+
+protected:
+ SoundTriggerHalInterface() {}
+};
+
+} // namespace android
+
+#endif // ANDROID_HARDWARE_SOUNDTRIGGER_HAL_INTERFACE_H