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// Copyright (C) 2021 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 "androidsurfacetexture_p.h"
#include <QtCore/qmutex.h>
#include <QtCore/qcoreapplication.h>
QT_BEGIN_NAMESPACE
static const char QtSurfaceTextureListenerClassName[] = "org/qtproject/qt/android/multimedia/QtSurfaceTextureListener";
typedef QList<jlong> SurfaceTextures;
Q_GLOBAL_STATIC(SurfaceTextures, g_surfaceTextures);
Q_GLOBAL_STATIC(QMutex, g_textureMutex);
static QAtomicInteger<quint64> indexCounter = 0u;
// native method for QtSurfaceTexture.java
static void notifyFrameAvailable(JNIEnv* , jobject, jlong id)
{
const QMutexLocker lock(g_textureMutex());
const int idx = g_surfaceTextures->indexOf(id);
if (idx == -1)
return;
AndroidSurfaceTexture *obj = reinterpret_cast<AndroidSurfaceTexture *>(g_surfaceTextures->at(idx));
if (obj)
Q_EMIT obj->frameAvailable();
}
AndroidSurfaceTexture::AndroidSurfaceTexture(quint32 texName)
: QObject()
, m_index(indexCounter.fetchAndAddRelaxed(1))
{
Q_STATIC_ASSERT(sizeof (jlong) >= sizeof (void *));
m_surfaceTexture = QJniObject("android/graphics/SurfaceTexture", "(I)V", jint(texName));
if (!m_surfaceTexture.isValid())
return;
const QMutexLocker lock(g_textureMutex());
g_surfaceTextures->append(jlong(this));
QJniObject listener(QtSurfaceTextureListenerClassName, "(J)V", jlong(this));
setOnFrameAvailableListener(listener);
}
AndroidSurfaceTexture::~AndroidSurfaceTexture()
{
if (m_surface.isValid())
m_surface.callMethod<void>("release");
if (m_surfaceTexture.isValid()) {
release();
const QMutexLocker lock(g_textureMutex());
const int idx = g_surfaceTextures->indexOf(jlong(this));
if (idx != -1)
g_surfaceTextures->remove(idx);
}
}
QMatrix4x4 AndroidSurfaceTexture::getTransformMatrix()
{
QMatrix4x4 matrix;
if (!m_surfaceTexture.isValid())
return matrix;
QJniEnvironment env;
jfloatArray array = env->NewFloatArray(16);
m_surfaceTexture.callMethod<void>("getTransformMatrix", "([F)V", array);
env->GetFloatArrayRegion(array, 0, 16, matrix.data());
env->DeleteLocalRef(array);
return matrix;
}
void AndroidSurfaceTexture::release()
{
m_surfaceTexture.callMethod<void>("release");
}
void AndroidSurfaceTexture::updateTexImage()
{
if (!m_surfaceTexture.isValid())
return;
m_surfaceTexture.callMethod<void>("updateTexImage");
}
jobject AndroidSurfaceTexture::surfaceTexture()
{
return m_surfaceTexture.object();
}
jobject AndroidSurfaceTexture::surface()
{
if (!m_surface.isValid()) {
m_surface = QJniObject("android/view/Surface",
"(Landroid/graphics/SurfaceTexture;)V",
m_surfaceTexture.object());
}
return m_surface.object();
}
jobject AndroidSurfaceTexture::surfaceHolder()
{
if (!m_surfaceHolder.isValid()) {
m_surfaceHolder = QJniObject("org/qtproject/qt/android/multimedia/QtSurfaceTextureHolder",
"(Landroid/view/Surface;)V",
surface());
}
return m_surfaceHolder.object();
}
void AndroidSurfaceTexture::attachToGLContext(quint32 texName)
{
if (!m_surfaceTexture.isValid())
return;
m_surfaceTexture.callMethod<void>("attachToGLContext", "(I)V", texName);
}
void AndroidSurfaceTexture::detachFromGLContext()
{
if (!m_surfaceTexture.isValid())
return;
m_surfaceTexture.callMethod<void>("detachFromGLContext");
}
bool AndroidSurfaceTexture::registerNativeMethods()
{
static const JNINativeMethod methods[] = {
{"notifyFrameAvailable", "(J)V", (void *)notifyFrameAvailable}
};
const int size = std::size(methods);
if (QJniEnvironment().registerNativeMethods(QtSurfaceTextureListenerClassName, methods, size))
return false;
return true;
}
void AndroidSurfaceTexture::setOnFrameAvailableListener(const QJniObject &listener)
{
m_surfaceTexture.callMethod<void>("setOnFrameAvailableListener",
"(Landroid/graphics/SurfaceTexture$OnFrameAvailableListener;)V",
listener.object());
}
QT_END_NAMESPACE
#include "moc_androidsurfacetexture_p.cpp"
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