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| | | /********** |
| | | This library is free software; you can redistribute it and/or modify it under |
| | | the terms of the GNU Lesser General Public License as published by the |
| | | Free Software Foundation; either version 3 of the License, or (at your |
| | | option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.) |
| | | |
| | | This library is distributed in the hope that it will be useful, but WITHOUT |
| | | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| | | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for |
| | | more details. |
| | | |
| | | You should have received a copy of the GNU Lesser General Public License |
| | | along with this library; if not, write to the Free Software Foundation, Inc., |
| | | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| | | **********/ |
| | | // Copyright (c) 1996-2017 Live Networks, Inc. All rights reserved. |
| | | // Generic audio input device (such as a microphone, or an input sound card) |
| | | // C++ header |
| | | |
| | | #ifndef _AUDIO_INPUT_DEVICE_HH |
| | | #define _AUDIO_INPUT_DEVICE_HH |
| | | |
| | | #ifndef _FRAMED_SOURCE_HH |
| | | #include "FramedSource.hh" |
| | | #endif |
| | | |
| | | class AudioPortNames { |
| | | public: |
| | | AudioPortNames(); |
| | | virtual ~AudioPortNames(); |
| | | |
| | | unsigned numPorts; |
| | | char** portName; |
| | | }; |
| | | |
| | | class AudioInputDevice: public FramedSource { |
| | | public: |
| | | unsigned char bitsPerSample() const { return fBitsPerSample; } |
| | | unsigned char numChannels() const { return fNumChannels; } |
| | | unsigned samplingFrequency() const { return fSamplingFrequency; } |
| | | |
| | | virtual Boolean setInputPort(int portIndex) = 0; |
| | | virtual double getAverageLevel() const = 0; |
| | | |
| | | static AudioInputDevice* |
| | | createNew(UsageEnvironment& env, int inputPortNumber, |
| | | unsigned char bitsPerSample, unsigned char numChannels, |
| | | unsigned samplingFrequency, unsigned granularityInMS = 20); |
| | | static AudioPortNames* getPortNames(); |
| | | |
| | | static char** allowedDeviceNames; |
| | | // If this is set to non-NULL, then it's a NULL-terminated array of strings |
| | | // of device names that we are allowed to access. |
| | | |
| | | protected: |
| | | AudioInputDevice(UsageEnvironment& env, |
| | | unsigned char bitsPerSample, |
| | | unsigned char numChannels, |
| | | unsigned samplingFrequency, |
| | | unsigned granularityInMS); |
| | | // we're an abstract base class |
| | | |
| | | virtual ~AudioInputDevice(); |
| | | |
| | | protected: |
| | | unsigned char fBitsPerSample, fNumChannels; |
| | | unsigned fSamplingFrequency; |
| | | unsigned fGranularityInMS; |
| | | }; |
| | | |
| | | #endif |