1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #define LOG_TAG "APM::AudioPolicyEngine/InputSource"
18 
19 #include "InputSource.h"
20 
21 using std::string;
22 
23 namespace android {
24 namespace audio_policy {
25 
setIdentifier(audio_source_t identifier)26 status_t Element<audio_source_t>::setIdentifier(audio_source_t identifier)
27 {
28     if (identifier > AUDIO_SOURCE_MAX && identifier != AUDIO_SOURCE_HOTWORD
29         && identifier != AUDIO_SOURCE_FM_TUNER && identifier != AUDIO_SOURCE_ECHO_REFERENCE) {
30         return BAD_VALUE;
31     }
32     mIdentifier = identifier;
33     ALOGV("%s: InputSource %s identifier 0x%X", __FUNCTION__, getName().c_str(), identifier);
34     return NO_ERROR;
35 }
36 
37 /**
38 * Set the device associated to this source.
39 * It checks if the input device is valid.
40 *
41 * @param[in] devices selected for the given input source.
42 * @tparam audio_devices_t: Applicable input device for this input source.
43 *
44 * @return NO_ERROR if the device is either valid or none, error code otherwise.
45 */
46 template <>
set(audio_devices_t devices)47 status_t Element<audio_source_t>::set(audio_devices_t devices)
48 {
49     if (devices == AUDIO_DEVICE_NONE) {
50         // Reset
51         mApplicableDevices = devices;
52         return NO_ERROR;
53     }
54     devices |= AUDIO_DEVICE_BIT_IN;
55     if (!audio_is_input_device(devices)) {
56         ALOGE("%s: trying to set an invalid device 0x%X for input source %s",
57               __FUNCTION__, devices, getName().c_str());
58         return BAD_VALUE;
59     }
60     ALOGV("%s: 0x%X for input source %s", __FUNCTION__, devices, getName().c_str());
61     mApplicableDevices = devices;
62     return NO_ERROR;
63 }
64 
65 template <>
get() const66 audio_devices_t Element<audio_source_t>::get<audio_devices_t>() const
67 {
68     ALOGV("%s: 0x%X for inputSource %s", __FUNCTION__, mApplicableDevices, getName().c_str());
69     return mApplicableDevices;
70 }
71 } // namespace audio_policy
72 } // namespace android
73 
74 
75