1 /*
2 * Copyright (C) 2016 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 <string.h>
18
19 #define LOG_TAG "HalHidl"
20 #include <media/AudioParameter.h>
21 #include <utils/Log.h>
22
23 #include "ConversionHelperHidl.h"
24
25 using ::android::hardware::audio::V2_0::Result;
26
27 namespace android {
28
29 // static
keysFromHal(const String8 & keys,hidl_vec<hidl_string> * hidlKeys)30 status_t ConversionHelperHidl::keysFromHal(const String8& keys, hidl_vec<hidl_string> *hidlKeys) {
31 AudioParameter halKeys(keys);
32 if (halKeys.size() == 0) return BAD_VALUE;
33 hidlKeys->resize(halKeys.size());
34 //FIXME: keyStreamSupportedChannels and keyStreamSupportedSamplingRates come with a
35 // "keyFormat=<value>" pair. We need to transform it into a single key string so that it is
36 // carried over to the legacy HAL via HIDL.
37 String8 value;
38 bool keepFormatValue = halKeys.size() == 2 &&
39 (halKeys.get(String8(AudioParameter::keyStreamSupportedChannels), value) == NO_ERROR ||
40 halKeys.get(String8(AudioParameter::keyStreamSupportedSamplingRates), value) == NO_ERROR);
41
42 for (size_t i = 0; i < halKeys.size(); ++i) {
43 String8 key;
44 status_t status = halKeys.getAt(i, key);
45 if (status != OK) return status;
46 if (keepFormatValue && key == AudioParameter::keyFormat) {
47 AudioParameter formatParam;
48 halKeys.getAt(i, key, value);
49 formatParam.add(key, value);
50 key = formatParam.toString();
51 }
52 (*hidlKeys)[i] = key.string();
53 }
54 return OK;
55 }
56
57 // static
parametersFromHal(const String8 & kvPairs,hidl_vec<ParameterValue> * hidlParams)58 status_t ConversionHelperHidl::parametersFromHal(
59 const String8& kvPairs, hidl_vec<ParameterValue> *hidlParams) {
60 AudioParameter params(kvPairs);
61 if (params.size() == 0) return BAD_VALUE;
62 hidlParams->resize(params.size());
63 for (size_t i = 0; i < params.size(); ++i) {
64 String8 key, value;
65 status_t status = params.getAt(i, key, value);
66 if (status != OK) return status;
67 (*hidlParams)[i].key = key.string();
68 (*hidlParams)[i].value = value.string();
69 }
70 return OK;
71 }
72
73 // static
parametersToHal(const hidl_vec<ParameterValue> & parameters,String8 * values)74 void ConversionHelperHidl::parametersToHal(
75 const hidl_vec<ParameterValue>& parameters, String8 *values) {
76 AudioParameter params;
77 for (size_t i = 0; i < parameters.size(); ++i) {
78 params.add(String8(parameters[i].key.c_str()), String8(parameters[i].value.c_str()));
79 }
80 values->setTo(params.toString());
81 }
82
ConversionHelperHidl(const char * className)83 ConversionHelperHidl::ConversionHelperHidl(const char* className)
84 : mClassName(className) {
85 }
86
87 // static
analyzeResult(const Result & result)88 status_t ConversionHelperHidl::analyzeResult(const Result& result) {
89 switch (result) {
90 case Result::OK: return OK;
91 case Result::INVALID_ARGUMENTS: return BAD_VALUE;
92 case Result::INVALID_STATE: return NOT_ENOUGH_DATA;
93 case Result::NOT_INITIALIZED: return NO_INIT;
94 case Result::NOT_SUPPORTED: return INVALID_OPERATION;
95 default: return NO_INIT;
96 }
97 }
98
emitError(const char * funcName,const char * description)99 void ConversionHelperHidl::emitError(const char* funcName, const char* description) {
100 ALOGE("%s %p %s: %s (from rpc)", mClassName, this, funcName, description);
101 }
102
103 } // namespace android
104