qt 基于Qaudiorecorder实现音频的录制与播放，播放器实现音频波形图

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IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "audiorecorder.h" #include "audiolevel.h" #include "ui_audiorecorder.h" #include <QAudioProbe> #include <QAudioRecorder> #include <QDir> #include <QFileDialog> #include <QMediaRecorder> #include <QStandardPaths> #include <QStandardItemModel> #include <QStandardItem> #include <QDateTime> #include <QFileInfo> #include "tablemodel.h" #include "buttondelegate.h" static qreal getPeakValue(const QAudioFormat &format); static QVector<qreal> getBufferLevels(const QAudioBuffer &buffer); template <class T> static QVector<qreal> getBufferLevels(const T *buffer, int frames, int channels); AudioRecorder::AudioRecorder() : ui(new Ui::AudioRecorder) { ui->setupUi(this); // QStandardItemModel *model = new QStandardItemModel(); // QStringList labels = QObject::trUtf8("音频名称,音频时长,音频大小,日期,操作").simplified().split(","); // model->setHorizontalHeaderLabels(labels); // ui->tableView->setModel(model); ui->tableView->setShowGrid(true);//背景网格线设置 ui->tableView->setGridStyle(Qt::DotLine);//网格背景画笔 ui->tableView->horizontalHeader()->setDefaultAlignment(Qt::AlignHCenter | Qt::AlignVCenter); ui->lineEdit->setFocusPolicy(Qt::NoFocus); QObject::connect(ui->OpenSaveFileButton, SIGNAL(clicked()), this, SLOT(setOutputLocation())); //ui->tableView->verticalHeader()->hide();//隐藏行号方法 // ui->tableView->setColumnWidth(0,150); // ui->tableView->setColumnWidth(1,130); // ui->tableView->setColumnWidth(2,100); // ui->tableView->setColumnWidth(3,200); // ui->tableView->setColumnWidth(4,200); m_model = new TableModel(); ui->tableView->setModel(m_model); QStringList headers; headers << "音频名称" << "音频时长"<<"音频大小"<<"日期"<<"操作"; m_model->setHorizontalHeader(headers); m_buttonDelegate = new ButtonDelegate(this); ui->tableView->setItemDelegateForColumn(4, m_buttonDelegate); emit m_model->layoutChanged(); ui->tableView->setColumnWidth(0,160); ui->tableView->setColumnWidth(1,160); ui->tableView->setColumnWidth(2,100); ui->tableView->setColumnWidth(3,200); ui->tableView->setColumnWidth(4,150); m_audioRecorder = new QAudioRecorder(this); m_probe = new QAudioProbe(this); connect(m_probe, &QAudioProbe::audioBufferProbed, this, &AudioRecorder::processBuffer); m_probe->setSource(m_audioRecorder); qDebug()<<QAudioDeviceInfo::defaultOutputDevice().deviceName(); qDebug()<<QAudioDeviceInfo::defaultInputDevice().deviceName(); //audio devices //ui->audioDeviceBox->addItem(tr("Default"), QVariant(QString())); for (auto &device: m_audioRecorder->audioInputs()) { ui->audioDeviceBox->addItem(device, QVariant(device)); } //显示输出音频设备 for (auto &Outdevice: QAudioDeviceInfo::availableDevices(QAudio::AudioOutput)) { ui->comboBox_Outdevice->addItem(Outdevice.deviceName(), QVariant(Outdevice.deviceName())); } //audio codecs for (auto &codecName: m_audioRecorder->supportedAudioCodecs()) { ui->audioCodecBox->addItem(codecName, QVariant(codecName)); } //containers for (auto &containerName: m_audioRecorder->supportedContainers()) { ui->containerBox->addItem(containerName, QVariant(containerName)); } #if defined(Q_OS_WIN32) //sample rate设置采样率 for (int sampleRate: m_audioRecorder->supportedAudioSampleRates()) { ui->sampleRateBox->addItem(QString::number(sampleRate), QVariant( sampleRate)); } #else ui->sampleRateBox->addItem(QString::number(48000), QVariant( 48000)); #endif //channels，设置音频通道 ui->channelsBox->addItem(QStringLiteral("1"), QVariant(1)); ui->channelsBox->addItem(QStringLiteral("2"), QVariant(2)); //ui->channelsBox->addItem(QStringLiteral("4"), QVariant(4)); //quality ui->qualitySlider->setRange(0, int(QMultimedia::VeryHighQuality)); ui->qualitySlider->setValue(int(QMultimedia::NormalQuality)); //bitrates: ui->bitrateBox->addItem(QStringLiteral("32000"), QVariant(32000)); ui->bitrateBox->addItem(QStringLiteral("48000"), QVariant(48000)); ui->bitrateBox->addItem(QStringLiteral("64000"), QVariant(64000)); ui->bitrateBox->addItem(QStringLiteral("96000"), QVariant(96000)); ui->bitrateBox->addItem(QStringLiteral("128000"), QVariant(128000)); connect(m_audioRecorder, &QAudioRecorder::durationChanged, this, &AudioRecorder::updateProgress); connect(m_audioRecorder, &QAudioRecorder::statusChanged, this, &AudioRecorder::updateStatus); connect(m_audioRecorder, &QAudioRecorder::stateChanged, this, &AudioRecorder::onStateChanged); connect(m_audioRecorder, QOverload<QMediaRecorder::Error>::of(&QAudioRecorder::error), this, &AudioRecorder::displayErrorMessage); connect(m_buttonDelegate,SIGNAL(deleteAudio(int)),this,SLOT(slotDeleteAudio(int))); connect(m_buttonDelegate,SIGNAL(PlayAudio(int)),this,SLOT(slotPlayAudio(int))); } void AudioRecorder::updateProgress(qint64 duration) { if (m_audioRecorder->error() != QMediaRecorder::NoError) return; m_duration = duration+500; ui->statusbar->showMessage(tr("已录制 %1 秒").arg(m_duration/ 1000)); } void AudioRecorder::updateStatus(QMediaRecorder::Status status) {