Audio HAL V5: Introduce HAL V5, equal to V4 for now
Port audio HAL V5 to AOSP for BT HAL.
The implementation is not ported as that would require to port an
additional ~30 patches and is not needed by the BT team.
Bug: 118203066
Test: Compile
Change-Id: If99a5645d19c9780019704ea4f51f8114d83ee8e
Merged-In: If99a5645d19c9780019704ea4f51f8114d83ee8f
Signed-off-by: Kevin Rocard <krocard@google.com>
diff --git a/audio/5.0/IDevicesFactory.hal b/audio/5.0/IDevicesFactory.hal
new file mode 100644
index 0000000..92060e7
--- /dev/null
+++ b/audio/5.0/IDevicesFactory.hal
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+package android.hardware.audio@5.0;
+
+import android.hardware.audio.common@5.0;
+import IDevice;
+import IPrimaryDevice;
+
+/** This factory allows a HAL implementation to be split in multiple independent
+ * devices (called module in the pre-treble API).
+ * Note that this division is arbitrary and implementation are free
+ * to only have a Primary.
+ * The framework will query the devices according to audio_policy_configuration.xml
+ *
+ * Each device name is arbitrary, provided by the vendor's audio_policy_configuration.xml
+ * and only used to identify a device in this factory.
+ * The framework must not interpret the name, treating it as a vendor opaque data
+ * with the following exception:
+ * - the "r_submix" device that must be present to support policyMixes (Eg: Android projected).
+ * Note that this Device is included by default in a build derived from AOSP.
+ *
+ * Note that on AOSP Oreo (including MR1) the "a2dp" module is not using this API
+ * but is loaded directly from the system partition using the legacy API
+ * due to limitations with the Bluetooth framework.
+ */
+interface IDevicesFactory {
+
+ /**
+ * Opens an audio device. To close the device, it is necessary to release
+ * references to the returned device object.
+ *
+ * @param device device name.
+ * @return retval operation completion status. Returns INVALID_ARGUMENTS
+ * if there is no corresponding hardware module found,
+ * NOT_INITIALIZED if an error occured while opening the hardware
+ * module.
+ * @return result the interface for the created device.
+ */
+ openDevice(string device) generates (Result retval, IDevice result);
+
+ /**
+ * Opens the Primary audio device that must be present.
+ * This function is not optional and must return successfully the primary device.
+ *
+ * This device must have the name "primary".
+ *
+ * The telephony stack uses this device to control the audio during a voice call.
+ *
+ * @return retval operation completion status. Must be SUCCESS.
+ * For debuging, return INVALID_ARGUMENTS if there is no corresponding
+ * hardware module found, NOT_INITIALIZED if an error occurred
+ * while opening the hardware module.
+ * @return result the interface for the created device.
+ */
+ openPrimaryDevice() generates (Result retval, IPrimaryDevice result);
+};