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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "SurfaceControl"
#include <stdint.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <android/native_window.h>
#include <utils/Errors.h>
#include <utils/Log.h>
#include <utils/threads.h>
#include <binder/IPCThreadState.h>
#include <ui/DisplayInfo.h>
#include <ui/GraphicBuffer.h>
#include <ui/Rect.h>
#include <gui/ISurfaceComposer.h>
#include <gui/Surface.h>
#include <gui/SurfaceComposerClient.h>
#include <gui/SurfaceControl.h>
namespace android {
// ============================================================================
// SurfaceControl
// ============================================================================
SurfaceControl::SurfaceControl(
const sp<SurfaceComposerClient>& client,
const sp<IBinder>& handle,
const sp<IGraphicBufferProducer>& gbp)
: mClient(client), mHandle(handle), mGraphicBufferProducer(gbp)
{
}
SurfaceControl::~SurfaceControl()
{
destroy();
}
void SurfaceControl::destroy()
{
if (isValid()) {
mClient->destroySurface(mHandle);
}
// clear all references and trigger an IPC now, to make sure things
// happen without delay, since these resources are quite heavy.
mClient.clear();
mHandle.clear();
mGraphicBufferProducer.clear();
IPCThreadState::self()->flushCommands();
}
void SurfaceControl::clear()
{
// here, the window manager tells us explicitly that we should destroy
// the surface's resource. Soon after this call, it will also release
// its last reference (which will call the dtor); however, it is possible
// that a client living in the same process still holds references which
// would delay the call to the dtor -- that is why we need this explicit
// "clear()" call.
destroy();
}
bool SurfaceControl::isSameSurface(
const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs)
{
if (lhs == 0 || rhs == 0)
return false;
return lhs->mHandle == rhs->mHandle;
}
status_t SurfaceControl::setLayerStack(uint32_t layerStack) {
status_t err = validate();
if (err < 0) return err;
return mClient->setLayerStack(mHandle, layerStack);
}
status_t SurfaceControl::setLayer(uint32_t layer) {
status_t err = validate();
if (err < 0) return err;
return mClient->setLayer(mHandle, layer);
}
status_t SurfaceControl::setPosition(float x, float y) {
status_t err = validate();
if (err < 0) return err;
return mClient->setPosition(mHandle, x, y);
}
status_t SurfaceControl::setSize(uint32_t w, uint32_t h) {
status_t err = validate();
if (err < 0) return err;
return mClient->setSize(mHandle, w, h);
}
status_t SurfaceControl::hide() {
status_t err = validate();
if (err < 0) return err;
return mClient->hide(mHandle);
}
status_t SurfaceControl::show() {
status_t err = validate();
if (err < 0) return err;
return mClient->show(mHandle);
}
status_t SurfaceControl::setFlags(uint32_t flags, uint32_t mask) {
status_t err = validate();
if (err < 0) return err;
return mClient->setFlags(mHandle, flags, mask);
}
status_t SurfaceControl::setTransparentRegionHint(const Region& transparent) {
status_t err = validate();
if (err < 0) return err;
return mClient->setTransparentRegionHint(mHandle, transparent);
}
status_t SurfaceControl::setAlpha(float alpha) {
status_t err = validate();
if (err < 0) return err;
return mClient->setAlpha(mHandle, alpha);
}
status_t SurfaceControl::setMatrix(float dsdx, float dtdx, float dsdy, float dtdy) {
status_t err = validate();
if (err < 0) return err;
return mClient->setMatrix(mHandle, dsdx, dtdx, dsdy, dtdy);
}
status_t SurfaceControl::setCrop(const Rect& crop) {
status_t err = validate();
if (err < 0) return err;
return mClient->setCrop(mHandle, crop);
}
status_t SurfaceControl::clearLayerFrameStats() const {
status_t err = validate();
if (err < 0) return err;
const sp<SurfaceComposerClient>& client(mClient);
return client->clearLayerFrameStats(mHandle);
}
status_t SurfaceControl::getLayerFrameStats(FrameStats* outStats) const {
status_t err = validate();
if (err < 0) return err;
const sp<SurfaceComposerClient>& client(mClient);
return client->getLayerFrameStats(mHandle, outStats);
}
status_t SurfaceControl::validate() const
{
if (mHandle==0 || mClient==0) {
ALOGE("invalid handle (%p) or client (%p)",
mHandle.get(), mClient.get());
return NO_INIT;
}
return NO_ERROR;
}
status_t SurfaceControl::writeSurfaceToParcel(
const sp<SurfaceControl>& control, Parcel* parcel)
{
sp<IGraphicBufferProducer> bp;
if (control != NULL) {
bp = control->mGraphicBufferProducer;
}
return parcel->writeStrongBinder(IInterface::asBinder(bp));
}
sp<Surface> SurfaceControl::getSurface() const
{
Mutex::Autolock _l(mLock);
if (mSurfaceData == 0) {
// This surface is always consumed by SurfaceFlinger, so the
// producerControlledByApp value doesn't matter; using false.
mSurfaceData = new Surface(mGraphicBufferProducer, false);
}
return mSurfaceData;
}
// ----------------------------------------------------------------------------
}; // namespace android
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