Revision control
++ // 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);
++ return QJniEnvironment().registerNativeMethods(QtSurfaceTextureListenerClassName, methods, size);
++ }
++
++ 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"