1 /*
2 * Copyright (C) 2006-2011 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 "AudioParameter"
18 //#define LOG_NDEBUG 0
19
20 #include <utils/Log.h>
21
22 #include <media/AudioParameter.h>
23 #include <system/audio.h>
24
25 namespace android {
26
27 // static
28 const char * const AudioParameter::keyRouting = AUDIO_PARAMETER_STREAM_ROUTING;
29 const char * const AudioParameter::keySamplingRate = AUDIO_PARAMETER_STREAM_SAMPLING_RATE;
30 const char * const AudioParameter::keyFormat = AUDIO_PARAMETER_STREAM_FORMAT;
31 const char * const AudioParameter::keyChannels = AUDIO_PARAMETER_STREAM_CHANNELS;
32 const char * const AudioParameter::keyFrameCount = AUDIO_PARAMETER_STREAM_FRAME_COUNT;
33 const char * const AudioParameter::keyInputSource = AUDIO_PARAMETER_STREAM_INPUT_SOURCE;
34 const char * const AudioParameter::keyScreenState = AUDIO_PARAMETER_KEY_SCREEN_STATE;
35 const char * const AudioParameter::keyBtNrec = AUDIO_PARAMETER_KEY_BT_NREC;
36 const char * const AudioParameter::keyHwAvSync = AUDIO_PARAMETER_HW_AV_SYNC;
37 const char * const AudioParameter::keyPresentationId = AUDIO_PARAMETER_STREAM_PRESENTATION_ID;
38 const char * const AudioParameter::keyProgramId = AUDIO_PARAMETER_STREAM_PROGRAM_ID;
39 const char * const AudioParameter::keyAudioLanguagePreferred =
40 AUDIO_PARAMETER_KEY_AUDIO_LANGUAGE_PREFERRED;
41 const char * const AudioParameter::keyMonoOutput = AUDIO_PARAMETER_MONO_OUTPUT;
42 const char * const AudioParameter::keyStreamHwAvSync = AUDIO_PARAMETER_STREAM_HW_AV_SYNC;
43 const char * const AudioParameter::keyDeviceConnect = AUDIO_PARAMETER_DEVICE_CONNECT;
44 const char * const AudioParameter::keyDeviceDisconnect = AUDIO_PARAMETER_DEVICE_DISCONNECT;
45 const char * const AudioParameter::keyStreamConnect = AUDIO_PARAMETER_DEVICE_CONNECT;
46 const char * const AudioParameter::keyStreamDisconnect = AUDIO_PARAMETER_DEVICE_DISCONNECT;
47 const char * const AudioParameter::keyStreamSupportedFormats = AUDIO_PARAMETER_STREAM_SUP_FORMATS;
48 const char * const AudioParameter::keyStreamSupportedChannels = AUDIO_PARAMETER_STREAM_SUP_CHANNELS;
49 const char * const AudioParameter::keyStreamSupportedSamplingRates =
50 AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES;
51 const char * const AudioParameter::valueOn = AUDIO_PARAMETER_VALUE_ON;
52 const char * const AudioParameter::valueOff = AUDIO_PARAMETER_VALUE_OFF;
53 const char * const AudioParameter::valueListSeparator = AUDIO_PARAMETER_VALUE_LIST_SEPARATOR;
54 const char * const AudioParameter::keyReconfigA2dp = AUDIO_PARAMETER_RECONFIG_A2DP;
55 const char * const AudioParameter::keyReconfigA2dpSupported = AUDIO_PARAMETER_A2DP_RECONFIG_SUPPORTED;
56
AudioParameter(const String8 & keyValuePairs)57 AudioParameter::AudioParameter(const String8& keyValuePairs)
58 {
59 char *str = new char[keyValuePairs.length()+1];
60 mKeyValuePairs = keyValuePairs;
61 char *last;
62
63 strcpy(str, keyValuePairs.string());
64 char *pair = strtok_r(str, ";", &last);
65 while (pair != NULL) {
66 if (strlen(pair) != 0) {
67 size_t eqIdx = strcspn(pair, "=");
68 String8 key = String8(pair, eqIdx);
69 String8 value;
70 if (eqIdx == strlen(pair)) {
71 value = String8("");
72 } else {
73 value = String8(pair + eqIdx + 1);
74 }
75 if (mParameters.indexOfKey(key) < 0) {
76 mParameters.add(key, value);
77 } else {
78 mParameters.replaceValueFor(key, value);
79 }
80 } else {
81 ALOGV("AudioParameter() cstor empty key value pair");
82 }
83 pair = strtok_r(NULL, ";", &last);
84 }
85
86 delete[] str;
87 }
88
~AudioParameter()89 AudioParameter::~AudioParameter()
90 {
91 mParameters.clear();
92 }
93
toStringImpl(bool useValues) const94 String8 AudioParameter::toStringImpl(bool useValues) const
95 {
96 String8 str = String8("");
97
98 size_t size = mParameters.size();
99 for (size_t i = 0; i < size; i++) {
100 str += mParameters.keyAt(i);
101 if (useValues) {
102 str += "=";
103 str += mParameters.valueAt(i);
104 }
105 if (i < (size - 1)) str += ";";
106 }
107 return str;
108 }
109
add(const String8 & key,const String8 & value)110 status_t AudioParameter::add(const String8& key, const String8& value)
111 {
112 if (mParameters.indexOfKey(key) < 0) {
113 mParameters.add(key, value);
114 return NO_ERROR;
115 } else {
116 mParameters.replaceValueFor(key, value);
117 return ALREADY_EXISTS;
118 }
119 }
120
addKey(const String8 & key)121 status_t AudioParameter::addKey(const String8& key)
122 {
123 return add(key, String8());
124 }
125
addInt(const String8 & key,const int value)126 status_t AudioParameter::addInt(const String8& key, const int value)
127 {
128 char str[12];
129 if (snprintf(str, 12, "%d", value) > 0) {
130 String8 str8 = String8(str);
131 return add(key, str8);
132 } else {
133 return BAD_VALUE;
134 }
135 }
136
addFloat(const String8 & key,const float value)137 status_t AudioParameter::addFloat(const String8& key, const float value)
138 {
139 char str[23];
140 if (snprintf(str, 23, "%.10f", value) > 0) {
141 String8 str8 = String8(str);
142 return add(key, str8);
143 } else {
144 return BAD_VALUE;
145 }
146 }
147
remove(const String8 & key)148 status_t AudioParameter::remove(const String8& key)
149 {
150 if (mParameters.indexOfKey(key) >= 0) {
151 mParameters.removeItem(key);
152 return NO_ERROR;
153 } else {
154 return BAD_VALUE;
155 }
156 }
157
get(const String8 & key,String8 & value) const158 status_t AudioParameter::get(const String8& key, String8& value) const
159 {
160 if (mParameters.indexOfKey(key) >= 0) {
161 value = mParameters.valueFor(key);
162 return NO_ERROR;
163 } else {
164 return BAD_VALUE;
165 }
166 }
167
getInt(const String8 & key,int & value) const168 status_t AudioParameter::getInt(const String8& key, int& value) const
169 {
170 String8 str8;
171 status_t result = get(key, str8);
172 value = 0;
173 if (result == NO_ERROR) {
174 int val;
175 if (sscanf(str8.string(), "%d", &val) == 1) {
176 value = val;
177 } else {
178 result = INVALID_OPERATION;
179 }
180 }
181 return result;
182 }
183
getFloat(const String8 & key,float & value) const184 status_t AudioParameter::getFloat(const String8& key, float& value) const
185 {
186 String8 str8;
187 status_t result = get(key, str8);
188 value = 0;
189 if (result == NO_ERROR) {
190 float val;
191 if (sscanf(str8.string(), "%f", &val) == 1) {
192 value = val;
193 } else {
194 result = INVALID_OPERATION;
195 }
196 }
197 return result;
198 }
199
getAt(size_t index,String8 & key) const200 status_t AudioParameter::getAt(size_t index, String8& key) const
201 {
202 if (mParameters.size() > index) {
203 key = mParameters.keyAt(index);
204 return NO_ERROR;
205 } else {
206 return BAD_VALUE;
207 }
208 }
209
getAt(size_t index,String8 & key,String8 & value) const210 status_t AudioParameter::getAt(size_t index, String8& key, String8& value) const
211 {
212 if (mParameters.size() > index) {
213 key = mParameters.keyAt(index);
214 value = mParameters.valueAt(index);
215 return NO_ERROR;
216 } else {
217 return BAD_VALUE;
218 }
219 }
220
221 } // namespace android
222