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// Copyright (C) 2022 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 "qwasmimagecapture_p.h"
#include <qimagewriter.h>
#include "qwasmmediacapturesession_p.h"
#include "qwasmcamera_p.h"
#include "qwasmvideosink_p.h"
QT_BEGIN_NAMESPACE
Q_LOGGING_CATEGORY(qWasmImageCapture, "qt.multimedia.wasm.imagecapture")
/* TODO
signals:
imageExposed
*/
QWasmImageCapture::QWasmImageCapture(QImageCapture *parent) : QPlatformImageCapture(parent) { }
QWasmImageCapture::~QWasmImageCapture() = default;
int QWasmImageCapture::capture(const QString &fileName)
{
if (!isReadyForCapture()) {
emit error(m_lastId, QImageCapture::NotReadyError, msgCameraNotReady());
return -1;
}
// TODO if fileName.isEmpty() we choose filename and location
QImage image = takePicture();
if (image.isNull())
return -1;
QImageWriter writer(fileName);
// TODO
// writer.setQuality(quality);
// writer.setFormat("png");
if (writer.write(image)) {
qCDebug(qWasmImageCapture) << Q_FUNC_INFO << "image saved";
emit imageSaved(m_lastId, fileName);
} else {
QImageCapture::Error err = (writer.error() == QImageWriter::UnsupportedFormatError)
? QImageCapture::FormatError
: QImageCapture::ResourceError;
emit error(m_lastId, err, writer.errorString());
}
return m_lastId;
}
int QWasmImageCapture::captureToBuffer()
{
if (!isReadyForCapture()) {
emit error(m_lastId, QImageCapture::NotReadyError, msgCameraNotReady());
return -1;
}
QImage image = takePicture();
if (image.isNull())
return -1;
emit imageCaptured(m_lastId, image);
return m_lastId;
}
QImage QWasmImageCapture::takePicture()
{
QVideoFrame thisFrame = m_captureSession->videoSink()->videoFrame();
if (!thisFrame.isValid())
return QImage();
m_lastId++;
emit imageAvailable(m_lastId, thisFrame);
QImage image = thisFrame.toImage();
if (image.isNull()) {
qCDebug(qWasmImageCapture) << Q_FUNC_INFO << "image is null";
emit error(m_lastId, QImageCapture::ResourceError, QStringLiteral("Resource error"));
return QImage();
}
emit imageCaptured(m_lastId, image);
if (m_settings.resolution().isValid() && m_settings.resolution() != image.size())
image = image.scaled(m_settings.resolution());
return image;
}
bool QWasmImageCapture::isReadyForCapture() const
{
return m_isReadyForCapture;
}
QImageEncoderSettings QWasmImageCapture::imageSettings() const
{
return m_settings;
}
void QWasmImageCapture::setImageSettings(const QImageEncoderSettings &settings)
{
m_settings = settings;
}
void QWasmImageCapture::setReadyForCapture(bool isReady)
{
if (m_isReadyForCapture != isReady) {
m_isReadyForCapture = isReady;
emit readyForCaptureChanged(m_isReadyForCapture);
}
}
void QWasmImageCapture::setCaptureSession(QPlatformMediaCaptureSession *session)
{
QWasmMediaCaptureSession *captureSession = static_cast<QWasmMediaCaptureSession *>(session);
// nullptr clears
if (m_captureSession == captureSession)
return;
m_isReadyForCapture = captureSession;
if (captureSession) {
m_lastId = 0;
m_captureSession = captureSession;
}
emit readyForCaptureChanged(m_isReadyForCapture);
m_captureSession = captureSession;
}
QT_END_NAMESPACE
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