SurfaceTexture: make (dis)connect into an IPC
This change makes the ANativeWindow connect and disconnect calls result
in an IPC to the SurfaceTexture object. This will allow us to prevent
multiple simultaneous connections from different processes.
Change-Id: Id9aa1003b1335b96ca6bd4a1f5a67aa433d42efb
diff --git a/libs/gui/ISurfaceTexture.cpp b/libs/gui/ISurfaceTexture.cpp
index 16e3780..ec06bc0 100644
--- a/libs/gui/ISurfaceTexture.cpp
+++ b/libs/gui/ISurfaceTexture.cpp
@@ -41,6 +41,8 @@
GET_ALLOCATOR,
QUERY,
SET_SYNCHRONOUS_MODE,
+ CONNECT,
+ DISCONNECT,
};
@@ -154,7 +156,23 @@
return result;
}
+ virtual status_t connect(int api) {
+ Parcel data, reply;
+ data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
+ data.writeInt32(api);
+ remote()->transact(CONNECT, data, &reply);
+ status_t result = reply.readInt32();
+ return result;
+ }
+ virtual status_t disconnect(int api) {
+ Parcel data, reply;
+ data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
+ data.writeInt32(api);
+ remote()->transact(DISCONNECT, data, &reply);
+ status_t result = reply.readInt32();
+ return result;
+ }
};
IMPLEMENT_META_INTERFACE(SurfaceTexture, "android.gui.SurfaceTexture");
@@ -248,6 +266,20 @@
reply->writeInt32(res);
return NO_ERROR;
} break;
+ case CONNECT: {
+ CHECK_INTERFACE(ISurfaceTexture, data, reply);
+ int api = data.readInt32();
+ status_t res = connect(api);
+ reply->writeInt32(res);
+ return NO_ERROR;
+ } break;
+ case DISCONNECT: {
+ CHECK_INTERFACE(ISurfaceTexture, data, reply);
+ int api = data.readInt32();
+ status_t res = connect(api);
+ reply->writeInt32(res);
+ return NO_ERROR;
+ } break;
}
return BBinder::onTransact(code, data, reply, flags);
}
diff --git a/libs/gui/SurfaceTexture.cpp b/libs/gui/SurfaceTexture.cpp
index 886a3fb..1410481 100644
--- a/libs/gui/SurfaceTexture.cpp
+++ b/libs/gui/SurfaceTexture.cpp
@@ -92,7 +92,8 @@
mNextTransform(0),
mTexName(tex),
mSynchronousMode(false),
- mAllowSynchronousMode(allowSynchronousMode) {
+ mAllowSynchronousMode(allowSynchronousMode),
+ mConnectedApi(NO_CONNECTED_API) {
LOGV("SurfaceTexture::SurfaceTexture");
sp<ISurfaceComposer> composer(ComposerService::getComposerService());
mGraphicBufferAlloc = composer->createGraphicBufferAlloc();
@@ -493,6 +494,50 @@
return OK;
}
+status_t SurfaceTexture::connect(int api) {
+ LOGV("SurfaceTexture::connect");
+ Mutex::Autolock lock(mMutex);
+ int err = NO_ERROR;
+ switch (api) {
+ case NATIVE_WINDOW_API_EGL:
+ case NATIVE_WINDOW_API_CPU:
+ case NATIVE_WINDOW_API_MEDIA:
+ case NATIVE_WINDOW_API_CAMERA:
+ if (mConnectedApi != NO_CONNECTED_API) {
+ err = -EINVAL;
+ } else {
+ mConnectedApi = api;
+ }
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+ return err;
+}
+
+status_t SurfaceTexture::disconnect(int api) {
+ LOGV("SurfaceTexture::disconnect");
+ Mutex::Autolock lock(mMutex);
+ int err = NO_ERROR;
+ switch (api) {
+ case NATIVE_WINDOW_API_EGL:
+ case NATIVE_WINDOW_API_CPU:
+ case NATIVE_WINDOW_API_MEDIA:
+ case NATIVE_WINDOW_API_CAMERA:
+ if (mConnectedApi == api) {
+ mConnectedApi = NO_CONNECTED_API;
+ } else {
+ err = -EINVAL;
+ }
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+ return err;
+}
+
status_t SurfaceTexture::updateTexImage() {
LOGV("SurfaceTexture::updateTexImage");
Mutex::Autolock lock(mMutex);
diff --git a/libs/gui/SurfaceTextureClient.cpp b/libs/gui/SurfaceTextureClient.cpp
index dc83412..281f2ed 100644
--- a/libs/gui/SurfaceTextureClient.cpp
+++ b/libs/gui/SurfaceTextureClient.cpp
@@ -27,7 +27,7 @@
const sp<ISurfaceTexture>& surfaceTexture):
mSurfaceTexture(surfaceTexture), mAllocator(0), mReqWidth(0),
mReqHeight(0), mReqFormat(0), mReqUsage(0),
- mTimestamp(NATIVE_WINDOW_TIMESTAMP_AUTO), mConnectedApi(0),
+ mTimestamp(NATIVE_WINDOW_TIMESTAMP_AUTO),
mQueryWidth(0), mQueryHeight(0), mQueryFormat(0),
mMutex() {
// Initialize the ANativeWindow function pointers.
@@ -306,51 +306,22 @@
int SurfaceTextureClient::connect(int api) {
LOGV("SurfaceTextureClient::connect");
Mutex::Autolock lock(mMutex);
- int err = NO_ERROR;
- switch (api) {
- case NATIVE_WINDOW_API_EGL:
- case NATIVE_WINDOW_API_CPU:
- case NATIVE_WINDOW_API_MEDIA:
- case NATIVE_WINDOW_API_CAMERA:
- if (mConnectedApi) {
- err = -EINVAL;
- } else {
- mConnectedApi = api;
- }
- break;
- default:
- err = -EINVAL;
- break;
- }
- return err;
+ return mSurfaceTexture->connect(api);
}
int SurfaceTextureClient::disconnect(int api) {
LOGV("SurfaceTextureClient::disconnect");
Mutex::Autolock lock(mMutex);
- int err = NO_ERROR;
- switch (api) {
- case NATIVE_WINDOW_API_EGL:
- case NATIVE_WINDOW_API_CPU:
- case NATIVE_WINDOW_API_MEDIA:
- case NATIVE_WINDOW_API_CAMERA:
- if (mConnectedApi == api) {
- mConnectedApi = 0;
- } else {
- err = -EINVAL;
- }
- break;
- default:
- err = -EINVAL;
- break;
- }
- return err;
+ return mSurfaceTexture->disconnect(api);
}
int SurfaceTextureClient::getConnectedApi() const
{
+ // XXX: This method will be going away shortly, and is currently bogus. It
+ // always returns "nothing is connected". It will go away once Surface gets
+ // updated to actually connect as the 'CPU' API when locking a buffer.
Mutex::Autolock lock(mMutex);
- return mConnectedApi;
+ return 0;
}