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::keyStreamConnect = AUDIO_PARAMETER_DEVICE_CONNECT;
44 const char * const AudioParameter::keyStreamDisconnect = AUDIO_PARAMETER_DEVICE_DISCONNECT;
45 const char * const AudioParameter::keyStreamSupportedFormats = AUDIO_PARAMETER_STREAM_SUP_FORMATS;
46 const char * const AudioParameter::keyStreamSupportedChannels = AUDIO_PARAMETER_STREAM_SUP_CHANNELS;
47 const char * const AudioParameter::keyStreamSupportedSamplingRates =
48 AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES;
49 const char * const AudioParameter::valueOn = AUDIO_PARAMETER_VALUE_ON;
50 const char * const AudioParameter::valueOff = AUDIO_PARAMETER_VALUE_OFF;
51 const char * const AudioParameter::valueListSeparator = AUDIO_PARAMETER_VALUE_LIST_SEPARATOR;
52 const char * const AudioParameter::keyReconfigA2dp = AUDIO_PARAMETER_RECONFIG_A2DP;
53 const char * const AudioParameter::keyReconfigA2dpSupported = AUDIO_PARAMETER_A2DP_RECONFIG_SUPPORTED;
54
AudioParameter(const String8 & keyValuePairs)55 AudioParameter::AudioParameter(const String8& keyValuePairs)
56 {
57 char *str = new char[keyValuePairs.length()+1];
58 mKeyValuePairs = keyValuePairs;
59 char *last;
60
61 strcpy(str, keyValuePairs.string());
62 char *pair = strtok_r(str, ";", &last);
63 while (pair != NULL) {
64 if (strlen(pair) != 0) {
65 size_t eqIdx = strcspn(pair, "=");
66 String8 key = String8(pair, eqIdx);
67 String8 value;
68 if (eqIdx == strlen(pair)) {
69 value = String8("");
70 } else {
71 value = String8(pair + eqIdx + 1);
72 }
73 if (mParameters.indexOfKey(key) < 0) {
74 mParameters.add(key, value);
75 } else {
76 mParameters.replaceValueFor(key, value);
77 }
78 } else {
79 ALOGV("AudioParameter() cstor empty key value pair");
80 }
81 pair = strtok_r(NULL, ";", &last);
82 }
83
84 delete[] str;
85 }
86
~AudioParameter()87 AudioParameter::~AudioParameter()
88 {
89 mParameters.clear();
90 }
91
toStringImpl(bool useValues) const92 String8 AudioParameter::toStringImpl(bool useValues) const
93 {
94 String8 str = String8("");
95
96 size_t size = mParameters.size();
97 for (size_t i = 0; i < size; i++) {
98 str += mParameters.keyAt(i);
99 if (useValues) {
100 str += "=";
101 str += mParameters.valueAt(i);
102 }
103 if (i < (size - 1)) str += ";";
104 }
105 return str;
106 }
107
add(const String8 & key,const String8 & value)108 status_t AudioParameter::add(const String8& key, const String8& value)
109 {
110 if (mParameters.indexOfKey(key) < 0) {
111 mParameters.add(key, value);
112 return NO_ERROR;
113 } else {
114 mParameters.replaceValueFor(key, value);
115 return ALREADY_EXISTS;
116 }
117 }
118
addKey(const String8 & key)119 status_t AudioParameter::addKey(const String8& key)
120 {
121 return add(key, String8());
122 }
123
addInt(const String8 & key,const int value)124 status_t AudioParameter::addInt(const String8& key, const int value)
125 {
126 char str[12];
127 if (snprintf(str, 12, "%d", value) > 0) {
128 String8 str8 = String8(str);
129 return add(key, str8);
130 } else {
131 return BAD_VALUE;
132 }
133 }
134
addFloat(const String8 & key,const float value)135 status_t AudioParameter::addFloat(const String8& key, const float value)
136 {
137 char str[23];
138 if (snprintf(str, 23, "%.10f", value) > 0) {
139 String8 str8 = String8(str);
140 return add(key, str8);
141 } else {
142 return BAD_VALUE;
143 }
144 }
145
remove(const String8 & key)146 status_t AudioParameter::remove(const String8& key)
147 {
148 if (mParameters.indexOfKey(key) >= 0) {
149 mParameters.removeItem(key);
150 return NO_ERROR;
151 } else {
152 return BAD_VALUE;
153 }
154 }
155
get(const String8 & key,String8 & value) const156 status_t AudioParameter::get(const String8& key, String8& value) const
157 {
158 if (mParameters.indexOfKey(key) >= 0) {
159 value = mParameters.valueFor(key);
160 return NO_ERROR;
161 } else {
162 return BAD_VALUE;
163 }
164 }
165
getInt(const String8 & key,int & value) const166 status_t AudioParameter::getInt(const String8& key, int& value) const
167 {
168 String8 str8;
169 status_t result = get(key, str8);
170 value = 0;
171 if (result == NO_ERROR) {
172 int val;
173 if (sscanf(str8.string(), "%d", &val) == 1) {
174 value = val;
175 } else {
176 result = INVALID_OPERATION;
177 }
178 }
179 return result;
180 }
181
getFloat(const String8 & key,float & value) const182 status_t AudioParameter::getFloat(const String8& key, float& value) const
183 {
184 String8 str8;
185 status_t result = get(key, str8);
186 value = 0;
187 if (result == NO_ERROR) {
188 float val;
189 if (sscanf(str8.string(), "%f", &val) == 1) {
190 value = val;
191 } else {
192 result = INVALID_OPERATION;
193 }
194 }
195 return result;
196 }
197
getAt(size_t index,String8 & key) const198 status_t AudioParameter::getAt(size_t index, String8& key) const
199 {
200 if (mParameters.size() > index) {
201 key = mParameters.keyAt(index);
202 return NO_ERROR;
203 } else {
204 return BAD_VALUE;
205 }
206 }
207
getAt(size_t index,String8 & key,String8 & value) const208 status_t AudioParameter::getAt(size_t index, String8& key, String8& value) const
209 {
210 if (mParameters.size() > index) {
211 key = mParameters.keyAt(index);
212 value = mParameters.valueAt(index);
213 return NO_ERROR;
214 } else {
215 return BAD_VALUE;
216 }
217 }
218
219 } // namespace android
220