1 /*
2 * Copyright (C) 2017 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 #include <common/all-versions/IncludeGuard.h>
18
19 #include <algorithm>
20 #include <vector>
21
22 #include <system/audio.h>
23
24 namespace android {
25 namespace hardware {
26 namespace audio {
27 namespace AUDIO_HAL_VERSION {
28 namespace implementation {
29
30 using ::android::hardware::audio::AUDIO_HAL_VERSION::Result;
31
32 /** @return true if gain is between 0 and 1 included. */
isGainNormalized(float gain)33 constexpr bool isGainNormalized(float gain) {
34 return gain >= 0.0 && gain <= 1.0;
35 }
36
37 namespace util {
38
39 template <typename T>
element_in(T e,const std::vector<T> & v)40 inline bool element_in(T e, const std::vector<T>& v) {
41 return std::find(v.begin(), v.end(), e) != v.end();
42 }
43
analyzeStatus(status_t status)44 static inline Result analyzeStatus(status_t status) {
45 switch (status) {
46 case 0:
47 return Result::OK;
48 case -EINVAL:
49 return Result::INVALID_ARGUMENTS;
50 case -ENODATA:
51 return Result::INVALID_STATE;
52 case -ENODEV:
53 return Result::NOT_INITIALIZED;
54 case -ENOSYS:
55 return Result::NOT_SUPPORTED;
56 default:
57 return Result::INVALID_STATE;
58 }
59 }
60
61 static inline Result analyzeStatus(const char* className, const char* funcName, status_t status,
62 const std::vector<int>& ignoreErrors = {}) {
63 if (status != 0 && !element_in(-status, ignoreErrors)) {
64 ALOGW("Error from HAL %s in function %s: %s", className, funcName, strerror(-status));
65 }
66 return analyzeStatus(status);
67 }
68
69 } // namespace util
70 } // namespace implementation
71 } // namespace AUDIO_HAL_VERSION
72 } // namespace audio
73 } // namespace hardware
74 } // namespace android
75