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Diffstat (limited to 'include/media/AudioParameter.h')
-rw-r--r-- | include/media/AudioParameter.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/include/media/AudioParameter.h b/include/media/AudioParameter.h new file mode 100644 index 0000000..79d5d82 --- /dev/null +++ b/include/media/AudioParameter.h @@ -0,0 +1,72 @@ +/* + * Copyright (C) 2008-2011 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef ANDROID_AUDIOPARAMETER_H_ +#define ANDROID_AUDIOPARAMETER_H_ + +#include <utils/Errors.h> +#include <utils/KeyedVector.h> +#include <utils/String8.h> + +namespace android { + +class AudioParameter { + +public: + AudioParameter() {} + AudioParameter(const String8& keyValuePairs); + virtual ~AudioParameter(); + + // reserved parameter keys for changing standard parameters with setParameters() function. + // Using these keys is mandatory for AudioFlinger to properly monitor audio output/input + // configuration changes and act accordingly. + // keyRouting: to change audio routing, value is an int in audio_devices_t + // keySamplingRate: to change sampling rate routing, value is an int + // keyFormat: to change audio format, value is an int in audio_format_t + // keyChannels: to change audio channel configuration, value is an int in audio_channels_t + // keyFrameCount: to change audio output frame count, value is an int + // keyInputSource: to change audio input source, value is an int in audio_source_t + // (defined in media/mediarecorder.h) + static const char *keyRouting; + static const char *keySamplingRate; + static const char *keyFormat; + static const char *keyChannels; + static const char *keyFrameCount; + static const char *keyInputSource; + + String8 toString(); + + status_t add(const String8& key, const String8& value); + status_t addInt(const String8& key, const int value); + status_t addFloat(const String8& key, const float value); + + status_t remove(const String8& key); + + status_t get(const String8& key, String8& value); + status_t getInt(const String8& key, int& value); + status_t getFloat(const String8& key, float& value); + status_t getAt(size_t index, String8& key, String8& value); + + size_t size() { return mParameters.size(); } + +private: + String8 mKeyValuePairs; + KeyedVector <String8, String8> mParameters; +}; + +}; // namespace android + +#endif /*ANDROID_AUDIOPARAMETER_H_*/ |