| /********** |
| 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) 1996-2020 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 |