Abstract away access to audio effects HAL and factory
In this CL all direct calls to functions from EffectsFactoryApi.h
and hardware/audio_effect.h are encapsulated within two new
classes: EffectsFactoryHalLocal and EffectHalLocal. AudioFlinger
uses interface classes EffectsFactoryHalInterface and
EffectHalInterface to access these functions.
Bug: 30222631
Change-Id: Id64b9c5529319077f6f968921489a13f60daa977
diff --git a/services/audioflinger/EffectHalLocal.h b/services/audioflinger/EffectHalLocal.h
new file mode 100644
index 0000000..92b2153
--- /dev/null
+++ b/services/audioflinger/EffectHalLocal.h
@@ -0,0 +1,60 @@
+/*
+ * 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_EFFECT_HAL_LOCAL_H
+#define ANDROID_HARDWARE_EFFECT_HAL_LOCAL_H
+
+#include "EffectHalInterface.h"
+
+namespace android {
+
+class EffectHalLocal : public EffectHalInterface
+{
+ public:
+ // The destructor automatically releases the effect.
+ virtual ~EffectHalLocal();
+
+ // Effect process function. Takes input samples as specified
+ // in input buffer descriptor and output processed samples as specified
+ // in output buffer descriptor.
+ virtual status_t process(audio_buffer_t *inBuffer, audio_buffer_t *outBuffer);
+
+ // Process reverse stream function. This function is used to pass
+ // a reference stream to the effect engine.
+ virtual status_t processReverse(audio_buffer_t *inBuffer, audio_buffer_t *outBuffer);
+
+ // Send a command and receive a response to/from effect engine.
+ virtual status_t command(uint32_t cmdCode, uint32_t cmdSize, void *pCmdData,
+ uint32_t *replySize, void *pReplyData);
+
+ // Returns the effect descriptor.
+ virtual status_t getDescriptor(effect_descriptor_t *pDescriptor);
+
+ // FIXME: Remove after converting the main audio HAL
+ effect_handle_t handle() const { return mHandle; }
+
+ private:
+ effect_handle_t mHandle;
+
+ friend class EffectsFactoryHalLocal;
+
+ // Can not be constructed directly by clients.
+ explicit EffectHalLocal(effect_handle_t handle);
+};
+
+} // namespace android
+
+#endif // ANDROID_HARDWARE_EFFECT_HAL_LOCAL_H