diff audio/AudioRecordTarget.cpp @ 548:baa11365ebdd bqaudioio

Merge from branch bqresample

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/audio/AudioRecordTarget.cpp	Wed Dec 07 11:51:42 2016 +0000
@@ -0,0 +1,193 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#include "AudioRecordTarget.h"
+
+#include "base/ViewManagerBase.h"
+#include "base/TempDirectory.h"
+
+#include "data/model/WritableWaveFileModel.h"
+
+#include <QDir>
+
+AudioRecordTarget::AudioRecordTarget(ViewManagerBase *manager,
+				     QString clientName) :
+    m_viewManager(manager),
+    m_clientName(clientName.toUtf8().data()),
+    m_recording(false),
+    m_recordSampleRate(44100),
+    m_frameCount(0),
+    m_model(0)
+{
+}
+
+AudioRecordTarget::~AudioRecordTarget()
+{
+    QMutexLocker locker(&m_mutex);
+}
+
+void
+AudioRecordTarget::setSystemRecordBlockSize(int)
+{
+}
+
+void
+AudioRecordTarget::setSystemRecordSampleRate(int n)
+{
+    m_recordSampleRate = n;
+}
+
+void
+AudioRecordTarget::setSystemRecordLatency(int)
+{
+}
+
+void
+AudioRecordTarget::putSamples(int nframes, float **samples)
+{
+    bool secChanged = false;
+    sv_frame_t frameToEmit = 0;
+
+    {
+        QMutexLocker locker(&m_mutex); //!!! bad here
+        if (!m_recording) return;
+
+        m_model->addSamples(samples, nframes);
+
+        sv_frame_t priorFrameCount = m_frameCount;
+        m_frameCount += nframes;
+
+        RealTime priorRT = RealTime::frame2RealTime
+            (priorFrameCount, m_recordSampleRate);
+        RealTime postRT = RealTime::frame2RealTime
+            (m_frameCount, m_recordSampleRate);
+
+        secChanged = (postRT.sec > priorRT.sec);
+        if (secChanged) frameToEmit = m_frameCount;
+    }
+
+    if (secChanged) {
+        emit recordDurationChanged(frameToEmit, m_recordSampleRate);
+    }
+}
+
+void
+AudioRecordTarget::setInputLevels(float, float)
+{
+}
+
+void
+AudioRecordTarget::modelAboutToBeDeleted()
+{
+    QMutexLocker locker(&m_mutex);
+    if (sender() == m_model) {
+        m_model = 0;
+        m_recording = false;
+    }
+}
+
+QString
+AudioRecordTarget::getRecordContainerFolder()
+{
+    QDir parent(TempDirectory::getInstance()->getContainingPath());
+    QString subdirname("recorded");
+
+    if (!parent.mkpath(subdirname)) {
+        cerr << "ERROR: AudioRecordTarget::getRecordContainerFolder: Failed to create recorded dir in \"" << parent.canonicalPath() << "\"" << endl;
+        return "";
+    } else {
+        return parent.filePath(subdirname);
+    }
+}
+
+QString
+AudioRecordTarget::getRecordFolder()
+{
+    QDir parent(getRecordContainerFolder());
+    QDateTime now = QDateTime::currentDateTime();
+    QString subdirname = QString("%1").arg(now.toString("yyyyMMdd"));
+
+    if (!parent.mkpath(subdirname)) {
+        cerr << "ERROR: AudioRecordTarget::getRecordFolder: Failed to create recorded dir in \"" << parent.canonicalPath() << "\"" << endl;
+        return "";
+    } else {
+        return parent.filePath(subdirname);
+    }
+}
+
+WritableWaveFileModel *
+AudioRecordTarget::startRecording()
+{
+    {
+    QMutexLocker locker(&m_mutex);
+    
+    if (m_recording) {
+        cerr << "WARNING: AudioRecordTarget::startRecording: We are already recording" << endl;
+        return 0;
+    }
+
+    m_model = 0;
+    m_frameCount = 0;
+
+    QString folder = getRecordFolder();
+    if (folder == "") return 0;
+    QDir recordedDir(folder);
+
+    QDateTime now = QDateTime::currentDateTime();
+
+    // Don't use QDateTime::toString(Qt::ISODate) as the ":" character
+    // isn't permitted in filenames on Windows
+    QString filename = QString("recorded-%1.wav")
+        .arg(now.toString("yyyyMMdd-HHmmss-zzz"));
+
+    m_audioFileName = recordedDir.filePath(filename);
+
+    m_model = new WritableWaveFileModel(m_recordSampleRate, 2, m_audioFileName);
+
+    if (!m_model->isOK()) {
+        cerr << "ERROR: AudioRecordTarget::startRecording: Recording failed"
+             << endl;
+        //!!! and throw?
+        delete m_model;
+        m_model = 0;
+        return 0;
+    }
+
+    m_recording = true;
+    }
+
+    emit recordStatusChanged(true);
+    return m_model;
+}
+
+void
+AudioRecordTarget::stopRecording()
+{
+    {
+    QMutexLocker locker(&m_mutex);
+    if (!m_recording) {
+        cerr << "WARNING: AudioRecordTarget::startRecording: Not recording" << endl;
+        return;
+    }
+
+    m_model->writeComplete();
+    m_model = 0;
+    m_recording = false;
+    }
+
+    emit recordStatusChanged(false);
+    emit recordCompleted();
+}
+
+