libaudiohal: Implement simple HIDL client
This client requires both HIDL client and server to be of the same
ABI version (e.g. 32-bit).
EffectHalHidl::process and EffectHalHidl::processReverse are stubs.
Some extra warnings are logged due to unimplemented functions
in the legacy HAL.
Bug: 30222631
Change-Id: Id074131dec6d6c4f1031695abcf3ea066e92a5af
Test: Play Music (play / EQ), YouTube, Loopback RTLT, Ok Google on N5X
diff --git a/media/libaudiohal/DeviceHalHidl.h b/media/libaudiohal/DeviceHalHidl.h
new file mode 100644
index 0000000..9da02a4
--- /dev/null
+++ b/media/libaudiohal/DeviceHalHidl.h
@@ -0,0 +1,123 @@
+/*
+ * 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_DEVICE_HAL_HIDL_H
+#define ANDROID_HARDWARE_DEVICE_HAL_HIDL_H
+
+#include <android/hardware/audio/2.0/IDevice.h>
+#include <media/audiohal/DeviceHalInterface.h>
+
+#include "ConversionHelperHidl.h"
+
+using ::android::hardware::audio::V2_0::IDevice;
+using ::android::hardware::Return;
+
+namespace android {
+
+class DeviceHalHidl : public DeviceHalInterface, public ConversionHelperHidl
+{
+ public:
+ // Sets the value of 'devices' to a bitmask of 1 or more values of audio_devices_t.
+ virtual status_t getSupportedDevices(uint32_t *devices);
+
+ // Check to see if the audio hardware interface has been initialized.
+ virtual status_t initCheck();
+
+ // Set the audio volume of a voice call. Range is between 0.0 and 1.0.
+ virtual status_t setVoiceVolume(float volume);
+
+ // Set the audio volume for all audio activities other than voice call.
+ virtual status_t setMasterVolume(float volume);
+
+ // Get the current master volume value for the HAL.
+ virtual status_t getMasterVolume(float *volume);
+
+ // Called when the audio mode changes.
+ virtual status_t setMode(audio_mode_t mode);
+
+ // Muting control.
+ virtual status_t setMicMute(bool state);
+ virtual status_t getMicMute(bool *state);
+ virtual status_t setMasterMute(bool state);
+ virtual status_t getMasterMute(bool *state);
+
+ // Set global audio parameters.
+ virtual status_t setParameters(const String8& kvPairs);
+
+ // Get global audio parameters.
+ virtual status_t getParameters(const String8& keys, String8 *values);
+
+ // Returns audio input buffer size according to parameters passed.
+ virtual status_t getInputBufferSize(const struct audio_config *config,
+ size_t *size);
+
+ // Creates and opens the audio hardware output stream. The stream is closed
+ // by releasing all references to the returned object.
+ virtual status_t openOutputStream(
+ audio_io_handle_t handle,
+ audio_devices_t devices,
+ audio_output_flags_t flags,
+ struct audio_config *config,
+ const char *address,
+ sp<StreamOutHalInterface> *outStream);
+
+ // Creates and opens the audio hardware input stream. The stream is closed
+ // by releasing all references to the returned object.
+ virtual status_t openInputStream(
+ audio_io_handle_t handle,
+ audio_devices_t devices,
+ struct audio_config *config,
+ audio_input_flags_t flags,
+ const char *address,
+ audio_source_t source,
+ sp<StreamInHalInterface> *inStream);
+
+ // Returns whether createAudioPatch and releaseAudioPatch operations are supported.
+ virtual status_t supportsAudioPatches(bool *supportsPatches);
+
+ // Creates an audio patch between several source and sink ports.
+ virtual status_t createAudioPatch(
+ unsigned int num_sources,
+ const struct audio_port_config *sources,
+ unsigned int num_sinks,
+ const struct audio_port_config *sinks,
+ audio_patch_handle_t *patch);
+
+ // Releases an audio patch.
+ virtual status_t releaseAudioPatch(audio_patch_handle_t patch);
+
+ // Fills the list of supported attributes for a given audio port.
+ virtual status_t getAudioPort(struct audio_port *port);
+
+ // Set audio port configuration.
+ virtual status_t setAudioPortConfig(const struct audio_port_config *config);
+
+ virtual status_t dump(int fd);
+
+ private:
+ friend class DevicesFactoryHalHidl;
+ sp<IDevice> mDevice;
+
+ // Can not be constructed directly by clients.
+ explicit DeviceHalHidl(const sp<IDevice>& device);
+
+ // The destructor automatically closes the device.
+ virtual ~DeviceHalHidl();
+};
+
+} // namespace android
+
+#endif // ANDROID_HARDWARE_DEVICE_HAL_HIDL_H