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Diffstat (limited to 'tests/manual/spectrum/spectrumapp/utils.cpp')
-rw-r--r-- | tests/manual/spectrum/spectrumapp/utils.cpp | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/tests/manual/spectrum/spectrumapp/utils.cpp b/tests/manual/spectrum/spectrumapp/utils.cpp deleted file mode 100644 index 95a55544..00000000 --- a/tests/manual/spectrum/spectrumapp/utils.cpp +++ /dev/null @@ -1,120 +0,0 @@ -/****************************************************************************** -** -** Copyright (C) 2015 The Qt Company Ltd. -** Contact: http://www.qt.io/licensing/ -** -** This file is part of the Qt Data Visualization module. -** -** $QT_BEGIN_LICENSE:COMM$ -** -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see http://www.qt.io/terms-conditions. For further -** information use the contact form at http://www.qt.io/contact-us. -** -** $QT_END_LICENSE$ -** -******************************************************************************/ - -#include <QAudioFormat> -#include "utils.h" - -qint64 audioDuration(const QAudioFormat &format, qint64 bytes) -{ - return (bytes * 1000000) / - (format.sampleRate() * format.channelCount() * (format.sampleSize() / 8)); -} - -qint64 audioLength(const QAudioFormat &format, qint64 microSeconds) -{ - qint64 result = (format.sampleRate() * format.channelCount() * (format.sampleSize() / 8)) - * microSeconds / 1000000; - result -= result % (format.channelCount() * format.sampleSize()); - return result; -} - -qreal nyquistFrequency(const QAudioFormat &format) -{ - return format.sampleRate() / 2; -} - -QString formatToString(const QAudioFormat &format) -{ - QString result; - - if (QAudioFormat() != format) { - if (format.codec() == "audio/pcm") { - Q_ASSERT(format.sampleType() == QAudioFormat::SignedInt); - - const QString formatEndian = (format.byteOrder() == QAudioFormat::LittleEndian) - ? QString("LE") : QString("BE"); - - QString formatType; - switch (format.sampleType()) { - case QAudioFormat::SignedInt: - formatType = "signed"; - break; - case QAudioFormat::UnSignedInt: - formatType = "unsigned"; - break; - case QAudioFormat::Float: - formatType = "float"; - break; - case QAudioFormat::Unknown: - formatType = "unknown"; - break; - } - - QString formatChannels = QString("%1 channels").arg(format.channelCount()); - switch (format.channelCount()) { - case 1: - formatChannels = "mono"; - break; - case 2: - formatChannels = "stereo"; - break; - } - - result = QString("%1 Hz %2 bit %3 %4 %5") - .arg(format.sampleRate()) - .arg(format.sampleSize()) - .arg(formatType) - .arg(formatEndian) - .arg(formatChannels); - } else { - result = format.codec(); - } - } - - return result; -} - -bool isPCM(const QAudioFormat &format) -{ - return (format.codec() == "audio/pcm"); -} - - -bool isPCMS16LE(const QAudioFormat &format) -{ - return isPCM(format) && - format.sampleType() == QAudioFormat::SignedInt && - format.sampleSize() == 16 && - format.byteOrder() == QAudioFormat::LittleEndian; -} - -const qint16 PCMS16MaxValue = 32767; -const quint16 PCMS16MaxAmplitude = 32768; // because minimum is -32768 - -qreal pcmToReal(qint16 pcm) -{ - return qreal(pcm) / PCMS16MaxAmplitude; -} - -qint16 realToPcm(qreal real) -{ - return real * PCMS16MaxValue; -} |