mirror of
https://gitlab.linphone.org/BC/public/linphone-desktop.git
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99 lines
2.4 KiB
C++
99 lines
2.4 KiB
C++
/*
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* Copyright (c) 2010-2020 Belledonne Communications SARL.
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*
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* This file is part of linphone-desktop
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* (see https://www.linphone.org).
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MEDIASTREAMER_UTILS_H_
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#define MEDIASTREAMER_UTILS_H_
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#include <cmath>
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#include <linphone++/linphone.hh>
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#include <QtGlobal>
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// =============================================================================
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struct _MSSndCard;
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struct _MSFilter;
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struct _MSTicker;
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struct _MSFactory;
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namespace MediastreamerUtils {
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inline float computeVu (float volume) {
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constexpr float VuMin = -20.f;
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constexpr float VuMax = 4.f;
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if (volume < VuMin)
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return 0.f;
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if (volume > VuMax)
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return 1.f;
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return (volume - VuMin) / (VuMax - VuMin);
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}
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inline float dbToLinear(float volume) {
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return static_cast<float>(pow(10.0, volume / 10.0));
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}
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float linearToDb(float volume);
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//Simple mediastreamer audio capture graph
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//Used to get current microphone volume in audio settings
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class SimpleCaptureGraph {
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public:
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SimpleCaptureGraph(const std::string &captureCardId, const std::string &playbackCardId);
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~SimpleCaptureGraph();
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void start();
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void stop();
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float getCaptureVolume();
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float getCaptureGain();
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float getPlaybackGain();
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void setCaptureGain(float volume);
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void setPlaybackGain(float volume);
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bool isRunning() const {
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return running;
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}
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void init();
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void destroy();
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bool running = false;
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std::string captureCardId;
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std::string playbackCardId;
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_MSFilter *audioSink = nullptr;
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_MSFilter *audioCapture = nullptr;
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_MSFilter *captureVolumeFilter = nullptr;
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_MSFilter *playbackVolumeFilter = nullptr;
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_MSFilter *resamplerFilter = nullptr;
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_MSTicker *ticker = nullptr;
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_MSSndCard *playbackCard = nullptr;
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_MSSndCard *captureCard = nullptr;
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_MSFactory *msFactory = nullptr;
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};
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}
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#endif // ifndef MEDIASTREAMER_UTILS_H_
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