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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qffmpegmediarecorder_p.h"
#include "qaudiodevice.h"
#include <private/qmediastoragelocation_p.h>
#include <private/qplatformcamera_p.h>
#include <private/qplatformsurfacecapture_p.h>
#include "qaudiosource.h"
#include "qffmpegaudioinput_p.h"
#include "qaudiobuffer.h"
#include "recordingengine/qffmpegrecordingengine_p.h"
#include "qffmpegmediacapturesession_p.h"
#include <qdebug.h>
#include <qloggingcategory.h>
static Q_LOGGING_CATEGORY(qLcMediaEncoder, "qt.multimedia.ffmpeg.encoder");
QT_BEGIN_NAMESPACE
QFFmpegMediaRecorder::QFFmpegMediaRecorder(QMediaRecorder *parent) : QPlatformMediaRecorder(parent)
{
}
QFFmpegMediaRecorder::~QFFmpegMediaRecorder() = default;
bool QFFmpegMediaRecorder::isLocationWritable(const QUrl &) const
{
return true;
}
void QFFmpegMediaRecorder::handleSessionError(QMediaRecorder::Error code, const QString &description)
{
updateError(code, description);
stop();
}
void QFFmpegMediaRecorder::record(QMediaEncoderSettings &settings)
{
if (!m_session || state() != QMediaRecorder::StoppedState)
return;
auto videoSources = m_session->activeVideoSources();
const auto hasVideo = !videoSources.empty();
const auto hasAudio = m_session->audioInput() != nullptr;
if (!hasVideo && !hasAudio) {
updateError(QMediaRecorder::ResourceError, QMediaRecorder::tr("No video or audio input"));
return;
}
if (outputDevice() && !outputLocation().isEmpty())
qCWarning(qLcMediaEncoder)
<< "Both outputDevice and outputLocation has been set to QMediaRecorder";
if (outputDevice() && !outputDevice()->isWritable())
qCWarning(qLcMediaEncoder) << "Output device has been set but not it's not writable";
QString actualLocation;
auto formatContext = std::make_unique<QFFmpeg::EncodingFormatContext>(settings.fileFormat());
if (outputDevice() && outputDevice()->isWritable()) {
formatContext->openAVIO(outputDevice());
} else {
actualLocation = findActualLocation(settings);
qCDebug(qLcMediaEncoder) << "recording new media to" << actualLocation;
formatContext->openAVIO(actualLocation);
}
qCDebug(qLcMediaEncoder) << "requested format:" << settings.fileFormat()
<< settings.audioCodec();
if (!formatContext->isAVIOOpen()) {
updateError(QMediaRecorder::LocationNotWritable,
QMediaRecorder::tr("Cannot open the output location for writing"));
return;
}
m_recordingEngine.reset(new RecordingEngine(settings, std::move(formatContext)));
m_recordingEngine->setMetaData(m_metaData);
connect(m_recordingEngine.get(), &QFFmpeg::RecordingEngine::durationChanged, this,
&QFFmpegMediaRecorder::newDuration);
connect(m_recordingEngine.get(), &QFFmpeg::RecordingEngine::finalizationDone, this,
&QFFmpegMediaRecorder::finalizationDone);
connect(m_recordingEngine.get(), &QFFmpeg::RecordingEngine::error, this,
&QFFmpegMediaRecorder::handleSessionError);
auto *audioInput = m_session->audioInput();
if (audioInput) {
if (audioInput->device.isNull())
qWarning() << "Audio input device is null; cannot encode audio";
else
m_recordingEngine->addAudioInput(static_cast<QFFmpegAudioInput *>(audioInput));
}
for (auto source : videoSources)
m_recordingEngine->addVideoSource(source);
durationChanged(0);
stateChanged(QMediaRecorder::RecordingState);
actualLocationChanged(QUrl::fromLocalFile(actualLocation));
m_recordingEngine->start();
}
void QFFmpegMediaRecorder::pause()
{
if (!m_session || state() != QMediaRecorder::RecordingState)
return;
Q_ASSERT(m_recordingEngine);
m_recordingEngine->setPaused(true);
stateChanged(QMediaRecorder::PausedState);
}
void QFFmpegMediaRecorder::resume()
{
if (!m_session || state() != QMediaRecorder::PausedState)
return;
Q_ASSERT(m_recordingEngine);
m_recordingEngine->setPaused(false);
stateChanged(QMediaRecorder::RecordingState);
}
void QFFmpegMediaRecorder::stop()
{
if (!m_session || state() == QMediaRecorder::StoppedState)
return;
auto * input = m_session ? m_session->audioInput() : nullptr;
if (input)
static_cast<QFFmpegAudioInput *>(input)->setRunning(false);
qCDebug(qLcMediaEncoder) << "stop";
m_recordingEngine.reset();
}
void QFFmpegMediaRecorder::finalizationDone()
{
stateChanged(QMediaRecorder::StoppedState);
}
void QFFmpegMediaRecorder::setMetaData(const QMediaMetaData &metaData)
{
if (!m_session)
return;
m_metaData = metaData;
}
QMediaMetaData QFFmpegMediaRecorder::metaData() const
{
return m_metaData;
}
void QFFmpegMediaRecorder::setCaptureSession(QFFmpegMediaCaptureSession *session)
{
auto *captureSession = session;
if (m_session == captureSession)
return;
if (m_session)
stop();
m_session = captureSession;
if (!m_session)
return;
}
void QFFmpegMediaRecorder::RecordingEngineDeleter::operator()(
RecordingEngine *recordingEngine) const
{
// ### all of the below should be done asynchronous. finalize() should do it's work in a thread
// to avoid blocking the UI in case of slow codecs
recordingEngine->finalize();
}
QT_END_NAMESPACE
#include "moc_qffmpegmediarecorder_p.cpp"
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