static jlong nativeReadFromParcel(JNIEnv* env, jclass clazz,
jlong nativeObject, jobject parcelObj) {
Parcel* parcel = parcelForJavaObject(env, parcelObj);
if (parcel == NULL) {
doThrowNPE(env);
return 0;
}
sp<Surface> self(reinterpret_cast<Surface *>(nativeObject));
sp<IBinder> binder(parcel->readStrongBinder());
// update the Surface only if the underlying IGraphicBufferProducer
// has changed.
if (self != NULL
&& (self->getIGraphicBufferProducer()->asBinder() == binder)) {
// same IGraphicBufferProducer, return ourselves
return jlong(self.get());
}
sp<Surface> sur;
sp<IGraphicBufferProducer> gbp(interface_cast<IGraphicBufferProducer>(binder));
if (gbp != NULL) {
// we have a new IGraphicBufferProducer, create a new Surface for it
sur = new Surface(gbp, true);
// and keep a reference before passing to java
sur->incStrong(&sRefBaseOwner);
}
if (self != NULL) {
// and loose the java reference to ourselves
self->decStrong(&sRefBaseOwner);
}
return jlong(sur.get());
}
static void Surface_writeToParcel(
JNIEnv* env, jobject clazz, jobject argParcel, jint flags)
{
Parcel* parcel = (Parcel*)env->GetIntField(
argParcel, no.native_parcel);
if (parcel == NULL) {
doThrowNPE(env);
return;
}
// The Java instance may have a SurfaceControl (in the case of the
// WindowManager or a system app). In that case, we defer to the
// SurfaceControl to send its ISurface. Otherwise, if the Surface is
// available we let it parcel itself. Finally, if the Surface is also
// NULL we fall back to using the SurfaceControl path which sends an
// empty surface; this matches legacy behavior.
const sp<SurfaceControl>& control(getSurfaceControl(env, clazz));
if (control != NULL) {
SurfaceControl::writeSurfaceToParcel(control, parcel);
} else {
sp<Surface> surface(Surface_getSurface(env, clazz));
if (surface != NULL) {
Surface::writeToParcel(surface, parcel);
} else {
SurfaceControl::writeSurfaceToParcel(NULL, parcel);
}
}
if (flags & PARCELABLE_WRITE_RETURN_VALUE) {
setSurfaceControl(env, clazz, NULL);
setSurface(env, clazz, NULL);
}
}
static void Surface_copyFrom(
JNIEnv* env, jobject clazz, jobject other)
{
if (clazz == other)
return;
if (other == NULL) {
doThrowNPE(env);
return;
}
/*
* This is used by the WindowManagerService just after constructing
* a Surface and is necessary for returning the Surface reference to
* the caller. At this point, we should only have a SurfaceControl.
*/
const sp<SurfaceControl>& surface = getSurfaceControl(env, clazz);
const sp<SurfaceControl>& rhs = getSurfaceControl(env, other);
if (!SurfaceControl::isSameSurface(surface, rhs)) {
// we reassign the surface only if it's a different one
// otherwise we would loose our client-side state.
setSurfaceControl(env, clazz, rhs);
}
}
static void Surface_init(
JNIEnv* env, jobject clazz,
jobject session,
jint, jstring jname, jint dpy, jint w, jint h, jint format, jint flags)
{
if (session == NULL) {
doThrowNPE(env);
return;
}
SurfaceComposerClient* client =
(SurfaceComposerClient*)env->GetIntField(session, sso.client);
sp<SurfaceControl> surface;
if (jname == NULL) {
surface = client->createSurface(dpy, w, h, format, flags);
} else {
const jchar* str = env->GetStringCritical(jname, 0);
const String8 name((const char16_t*)str, env->GetStringLength(jname));
env->ReleaseStringCritical(jname, str);
surface = client->createSurface(name, dpy, w, h, format, flags);
}
if (surface == 0) {
jniThrowException(env, OutOfResourcesException, NULL);
return;
}
setSurfaceControl(env, clazz, surface);
}
static void nativeWriteToParcel(JNIEnv* env, jclass clazz,
jlong nativeObject, jobject parcelObj) {
Parcel* parcel = parcelForJavaObject(env, parcelObj);
if (parcel == NULL) {
doThrowNPE(env);
return;
}
sp<Surface> self(reinterpret_cast<Surface *>(nativeObject));
parcel->writeStrongBinder( self != 0 ? self->getIGraphicBufferProducer()->asBinder() : NULL);
}
static void Surface_initParcel(JNIEnv* env, jobject clazz, jobject argParcel)
{
Parcel* parcel = (Parcel*)env->GetIntField(argParcel, no.native_parcel);
if (parcel == NULL) {
doThrowNPE(env);
return;
}
sp<Surface> sur(Surface::readFromParcel(*parcel));
setSurface(env, clazz, sur);
}
static void Surface_transferFrom(
JNIEnv* env, jobject clazz, jobject other)
{
if (clazz == other)
return;
if (other == NULL) {
doThrowNPE(env);
return;
}
sp<SurfaceControl> control(getSurfaceControl(env, other));
sp<Surface> surface(Surface_getSurface(env, other));
setSurfaceControl(env, clazz, control);
setSurface(env, clazz, surface);
setSurfaceControl(env, other, 0);
setSurface(env, other, 0);
}