208cb07724
this situation happened when the last buffer needed to be resized (or allocated, the first time). the assumption was that the buffer was in use by SF itself as the current buffer (obviously, this assumption made no sense when the buffer had never been allocated, btw). the system would wait until some other buffer became the "front" buffer. we fix this problem by entirely removing the requirement that the buffer being resized cannot be the front buffer. instead, we just allocate a new buffer and replace the front buffer by the new one. the downside is that this uses more memory (an extra buffer) for a brief amount of time while the old buffer is being reallocated and before it has actually been replaced. Change-Id: I022e4621209474ceb1c671b23deb4188eaaa7285
860 lines
26 KiB
C++
860 lines
26 KiB
C++
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdlib.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <cutils/properties.h>
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#include <cutils/native_handle.h>
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#include <utils/Errors.h>
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#include <utils/Log.h>
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#include <utils/StopWatch.h>
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#include <ui/GraphicBuffer.h>
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#include <ui/PixelFormat.h>
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#include <surfaceflinger/Surface.h>
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#include "clz.h"
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#include "GLExtensions.h"
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#include "Layer.h"
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#include "SurfaceFlinger.h"
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#include "DisplayHardware/DisplayHardware.h"
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#define DEBUG_RESIZE 0
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namespace android {
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template <typename T> inline T min(T a, T b) {
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return a<b ? a : b;
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}
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// ---------------------------------------------------------------------------
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Layer::Layer(SurfaceFlinger* flinger,
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DisplayID display, const sp<Client>& client)
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: LayerBaseClient(flinger, display, client),
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mGLExtensions(GLExtensions::getInstance()),
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mNeedsBlending(true),
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mNeedsDithering(false),
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mSecure(false),
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mTextureManager(),
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mBufferManager(mTextureManager),
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mWidth(0), mHeight(0), mFixedSize(false)
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{
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}
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Layer::~Layer()
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{
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// FIXME: must be called from the main UI thread
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EGLDisplay dpy(mFlinger->graphicPlane(0).getEGLDisplay());
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mBufferManager.destroy(dpy);
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// we can use getUserClientUnsafe here because we know we're
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// single-threaded at that point.
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sp<UserClient> ourClient(mUserClientRef.getUserClientUnsafe());
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if (ourClient != 0) {
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ourClient->detachLayer(this);
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}
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}
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status_t Layer::setToken(const sp<UserClient>& userClient,
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SharedClient* sharedClient, int32_t token)
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{
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sp<SharedBufferServer> lcblk = new SharedBufferServer(
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sharedClient, token, mBufferManager.getDefaultBufferCount(),
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getIdentity());
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status_t err = mUserClientRef.setToken(userClient, lcblk, token);
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LOGE_IF(err != NO_ERROR,
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"ClientRef::setToken(%p, %p, %u) failed",
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userClient.get(), lcblk.get(), token);
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if (err == NO_ERROR) {
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// we need to free the buffers associated with this surface
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}
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return err;
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}
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int32_t Layer::getToken() const
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{
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return mUserClientRef.getToken();
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}
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sp<UserClient> Layer::getClient() const
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{
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return mUserClientRef.getClient();
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}
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// called with SurfaceFlinger::mStateLock as soon as the layer is entered
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// in the purgatory list
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void Layer::onRemoved()
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{
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ClientRef::Access sharedClient(mUserClientRef);
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SharedBufferServer* lcblk(sharedClient.get());
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if (lcblk) {
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// wake up the condition
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lcblk->setStatus(NO_INIT);
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}
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}
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sp<LayerBaseClient::Surface> Layer::createSurface() const
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{
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return mSurface;
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}
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status_t Layer::ditch()
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{
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// NOTE: Called from the main UI thread
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// the layer is not on screen anymore. free as much resources as possible
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mFreezeLock.clear();
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EGLDisplay dpy(mFlinger->graphicPlane(0).getEGLDisplay());
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mBufferManager.destroy(dpy);
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mSurface.clear();
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Mutex::Autolock _l(mLock);
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mWidth = mHeight = 0;
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return NO_ERROR;
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}
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status_t Layer::setBuffers( uint32_t w, uint32_t h,
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PixelFormat format, uint32_t flags)
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{
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// this surfaces pixel format
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PixelFormatInfo info;
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status_t err = getPixelFormatInfo(format, &info);
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if (err) return err;
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// the display's pixel format
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const DisplayHardware& hw(graphicPlane(0).displayHardware());
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uint32_t const maxSurfaceDims = min(
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hw.getMaxTextureSize(), hw.getMaxViewportDims());
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// never allow a surface larger than what our underlying GL implementation
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// can handle.
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if ((uint32_t(w)>maxSurfaceDims) || (uint32_t(h)>maxSurfaceDims)) {
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return BAD_VALUE;
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}
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PixelFormatInfo displayInfo;
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getPixelFormatInfo(hw.getFormat(), &displayInfo);
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const uint32_t hwFlags = hw.getFlags();
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mFormat = format;
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mReqFormat = format;
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mWidth = w;
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mHeight = h;
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mSecure = (flags & ISurfaceComposer::eSecure) ? true : false;
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mNeedsBlending = (info.h_alpha - info.l_alpha) > 0;
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// we use the red index
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int displayRedSize = displayInfo.getSize(PixelFormatInfo::INDEX_RED);
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int layerRedsize = info.getSize(PixelFormatInfo::INDEX_RED);
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mNeedsDithering = layerRedsize > displayRedSize;
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mSurface = new SurfaceLayer(mFlinger, this);
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return NO_ERROR;
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}
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void Layer::reloadTexture(const Region& dirty)
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{
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sp<GraphicBuffer> buffer(mBufferManager.getActiveBuffer());
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if (buffer == NULL) {
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// this situation can happen if we ran out of memory for instance.
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// not much we can do. continue to use whatever texture was bound
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// to this context.
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return;
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}
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if (mGLExtensions.haveDirectTexture()) {
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EGLDisplay dpy(mFlinger->graphicPlane(0).getEGLDisplay());
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if (mBufferManager.initEglImage(dpy, buffer) != NO_ERROR) {
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// not sure what we can do here...
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goto slowpath;
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}
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} else {
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slowpath:
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GGLSurface t;
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status_t res = buffer->lock(&t, GRALLOC_USAGE_SW_READ_OFTEN);
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LOGE_IF(res, "error %d (%s) locking buffer %p",
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res, strerror(res), buffer.get());
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if (res == NO_ERROR) {
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mBufferManager.loadTexture(dirty, t);
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buffer->unlock();
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}
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}
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}
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void Layer::onDraw(const Region& clip) const
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{
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Texture tex(mBufferManager.getActiveTexture());
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if (tex.name == -1LU) {
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// the texture has not been created yet, this Layer has
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// in fact never been drawn into. This happens frequently with
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// SurfaceView because the WindowManager can't know when the client
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// has drawn the first time.
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// If there is nothing under us, we paint the screen in black, otherwise
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// we just skip this update.
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// figure out if there is something below us
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Region under;
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const SurfaceFlinger::LayerVector& drawingLayers(mFlinger->mDrawingState.layersSortedByZ);
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const size_t count = drawingLayers.size();
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for (size_t i=0 ; i<count ; ++i) {
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const sp<LayerBase>& layer(drawingLayers[i]);
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if (layer.get() == static_cast<LayerBase const*>(this))
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break;
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under.orSelf(layer->visibleRegionScreen);
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}
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// if not everything below us is covered, we plug the holes!
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Region holes(clip.subtract(under));
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if (!holes.isEmpty()) {
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clearWithOpenGL(holes, 0, 0, 0, 1);
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}
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return;
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}
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drawWithOpenGL(clip, tex);
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}
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bool Layer::needsFiltering() const
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{
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if (!(mFlags & DisplayHardware::SLOW_CONFIG)) {
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// NOTE: there is a race here, because mFixedSize is updated in a
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// binder transaction. however, it doesn't really matter since it is
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// evaluated each time we draw. To be perfectly correct, this flag
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// would have to be associated with a buffer.
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if (mFixedSize)
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return true;
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}
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return LayerBase::needsFiltering();
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}
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status_t Layer::setBufferCount(int bufferCount)
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{
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ClientRef::Access sharedClient(mUserClientRef);
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SharedBufferServer* lcblk(sharedClient.get());
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if (!lcblk) {
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// oops, the client is already gone
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return DEAD_OBJECT;
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}
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// NOTE: lcblk->resize() is protected by an internal lock
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status_t err = lcblk->resize(bufferCount);
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if (err == NO_ERROR)
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mBufferManager.resize(bufferCount);
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return err;
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}
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sp<GraphicBuffer> Layer::requestBuffer(int index,
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uint32_t reqWidth, uint32_t reqHeight, uint32_t reqFormat,
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uint32_t usage)
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{
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sp<GraphicBuffer> buffer;
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if (int32_t(reqWidth | reqHeight | reqFormat) < 0)
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return buffer;
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if ((!reqWidth && reqHeight) || (reqWidth && !reqHeight))
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return buffer;
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// this ensures our client doesn't go away while we're accessing
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// the shared area.
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ClientRef::Access sharedClient(mUserClientRef);
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SharedBufferServer* lcblk(sharedClient.get());
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if (!lcblk) {
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// oops, the client is already gone
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return buffer;
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}
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/*
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* This is called from the client's Surface::dequeue(). This can happen
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* at any time, especially while we're in the middle of using the
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* buffer 'index' as our front buffer.
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*/
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status_t err = NO_ERROR;
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uint32_t w, h, f;
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{ // scope for the lock
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Mutex::Autolock _l(mLock);
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const bool fixedSizeChanged = mFixedSize != (reqWidth && reqHeight);
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const bool formatChanged = mReqFormat != reqFormat;
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mReqWidth = reqWidth;
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mReqHeight = reqHeight;
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mReqFormat = reqFormat;
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mFixedSize = reqWidth && reqHeight;
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w = reqWidth ? reqWidth : mWidth;
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h = reqHeight ? reqHeight : mHeight;
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f = reqFormat ? reqFormat : mFormat;
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if (fixedSizeChanged || formatChanged) {
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lcblk->reallocateAllExcept(index);
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}
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}
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// here we have to reallocate a new buffer because the buffer could be
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// used as the front buffer, or by a client in our process
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// (eg: status bar), and we can't release the handle under its feet.
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const uint32_t effectiveUsage = getEffectiveUsage(usage);
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buffer = new GraphicBuffer(w, h, f, effectiveUsage);
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err = buffer->initCheck();
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if (err || buffer->handle == 0) {
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LOGE_IF(err || buffer->handle == 0,
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"Layer::requestBuffer(this=%p), index=%d, w=%d, h=%d failed (%s)",
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this, index, w, h, strerror(-err));
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} else {
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LOGD_IF(DEBUG_RESIZE,
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"Layer::requestBuffer(this=%p), index=%d, w=%d, h=%d, handle=%p",
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this, index, w, h, buffer->handle);
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}
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if (err == NO_ERROR && buffer->handle != 0) {
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Mutex::Autolock _l(mLock);
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mBufferManager.attachBuffer(index, buffer);
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}
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return buffer;
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}
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uint32_t Layer::getEffectiveUsage(uint32_t usage) const
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{
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/*
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* buffers used for software rendering, but h/w composition
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* are allocated with SW_READ_OFTEN | SW_WRITE_OFTEN | HW_TEXTURE
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*
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* buffers used for h/w rendering and h/w composition
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* are allocated with HW_RENDER | HW_TEXTURE
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*
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* buffers used with h/w rendering and either NPOT or no egl_image_ext
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* are allocated with SW_READ_RARELY | HW_RENDER
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*
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*/
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if (mSecure) {
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// secure buffer, don't store it into the GPU
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usage = GraphicBuffer::USAGE_SW_READ_OFTEN |
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GraphicBuffer::USAGE_SW_WRITE_OFTEN;
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} else {
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// it's allowed to modify the usage flags here, but generally
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// the requested flags should be honored.
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// request EGLImage for all buffers
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usage |= GraphicBuffer::USAGE_HW_TEXTURE;
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}
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return usage;
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}
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uint32_t Layer::doTransaction(uint32_t flags)
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{
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const Layer::State& front(drawingState());
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const Layer::State& temp(currentState());
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const bool sizeChanged = (front.requested_w != temp.requested_w) ||
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(front.requested_h != temp.requested_h);
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if (sizeChanged) {
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// the size changed, we need to ask our client to request a new buffer
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LOGD_IF(DEBUG_RESIZE,
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"resize (layer=%p), requested (%dx%d), drawing (%d,%d)",
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this,
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int(temp.requested_w), int(temp.requested_h),
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int(front.requested_w), int(front.requested_h));
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if (!isFixedSize()) {
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// we're being resized and there is a freeze display request,
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// acquire a freeze lock, so that the screen stays put
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// until we've redrawn at the new size; this is to avoid
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// glitches upon orientation changes.
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if (mFlinger->hasFreezeRequest()) {
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// if the surface is hidden, don't try to acquire the
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// freeze lock, since hidden surfaces may never redraw
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if (!(front.flags & ISurfaceComposer::eLayerHidden)) {
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mFreezeLock = mFlinger->getFreezeLock();
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}
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}
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// this will make sure LayerBase::doTransaction doesn't update
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// the drawing state's size
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Layer::State& editDraw(mDrawingState);
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editDraw.requested_w = temp.requested_w;
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editDraw.requested_h = temp.requested_h;
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// record the new size, form this point on, when the client request
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// a buffer, it'll get the new size.
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setBufferSize(temp.requested_w, temp.requested_h);
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ClientRef::Access sharedClient(mUserClientRef);
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SharedBufferServer* lcblk(sharedClient.get());
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if (lcblk) {
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// all buffers need reallocation
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lcblk->reallocateAll();
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}
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} else {
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// record the new size
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setBufferSize(temp.requested_w, temp.requested_h);
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}
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}
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if (temp.sequence != front.sequence) {
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if (temp.flags & ISurfaceComposer::eLayerHidden || temp.alpha == 0) {
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// this surface is now hidden, so it shouldn't hold a freeze lock
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// (it may never redraw, which is fine if it is hidden)
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mFreezeLock.clear();
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}
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}
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return LayerBase::doTransaction(flags);
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}
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void Layer::setBufferSize(uint32_t w, uint32_t h) {
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Mutex::Autolock _l(mLock);
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mWidth = w;
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mHeight = h;
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}
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bool Layer::isFixedSize() const {
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Mutex::Autolock _l(mLock);
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return mFixedSize;
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}
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// ----------------------------------------------------------------------------
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// pageflip handling...
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// ----------------------------------------------------------------------------
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void Layer::lockPageFlip(bool& recomputeVisibleRegions)
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{
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ClientRef::Access sharedClient(mUserClientRef);
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SharedBufferServer* lcblk(sharedClient.get());
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if (!lcblk) {
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// client died
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recomputeVisibleRegions = true;
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return;
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}
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ssize_t buf = lcblk->retireAndLock();
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if (buf == NOT_ENOUGH_DATA) {
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// NOTE: This is not an error, it simply means there is nothing to
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// retire. The buffer is locked because we will use it
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// for composition later in the loop
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return;
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}
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if (buf < NO_ERROR) {
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LOGE("retireAndLock() buffer index (%d) out of range", int(buf));
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mPostedDirtyRegion.clear();
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return;
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}
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// we retired a buffer, which becomes the new front buffer
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if (mBufferManager.setActiveBufferIndex(buf) < NO_ERROR) {
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LOGE("retireAndLock() buffer index (%d) out of range", int(buf));
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mPostedDirtyRegion.clear();
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return;
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}
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// get the dirty region
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sp<GraphicBuffer> newFrontBuffer(getBuffer(buf));
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if (newFrontBuffer != NULL) {
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// compute the posted region
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const Region dirty(lcblk->getDirtyRegion(buf));
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mPostedDirtyRegion = dirty.intersect( newFrontBuffer->getBounds() );
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// update the layer size and release freeze-lock
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const Layer::State& front(drawingState());
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if (newFrontBuffer->getWidth() == front.requested_w &&
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newFrontBuffer->getHeight() == front.requested_h)
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{
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if ((front.w != front.requested_w) ||
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(front.h != front.requested_h))
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{
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// Here we pretend the transaction happened by updating the
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// current and drawing states. Drawing state is only accessed
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// in this thread, no need to have it locked
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Layer::State& editDraw(mDrawingState);
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editDraw.w = editDraw.requested_w;
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editDraw.h = editDraw.requested_h;
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// We also need to update the current state so that we don't
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// end-up doing too much work during the next transaction.
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// NOTE: We actually don't need hold the transaction lock here
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// because State::w and State::h are only accessed from
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// this thread
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Layer::State& editTemp(currentState());
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editTemp.w = editDraw.w;
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editTemp.h = editDraw.h;
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// recompute visible region
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recomputeVisibleRegions = true;
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}
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// we now have the correct size, unfreeze the screen
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mFreezeLock.clear();
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}
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} else {
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// this should not happen unless we ran out of memory while
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// allocating the buffer. we're hoping that things will get back
|
|
// to normal the next time the app tries to draw into this buffer.
|
|
// meanwhile, pretend the screen didn't update.
|
|
mPostedDirtyRegion.clear();
|
|
}
|
|
|
|
if (lcblk->getQueuedCount()) {
|
|
// signal an event if we have more buffers waiting
|
|
mFlinger->signalEvent();
|
|
}
|
|
|
|
/* a buffer was posted, so we need to call reloadTexture(), which
|
|
* will update our internal data structures (eg: EGLImageKHR or
|
|
* texture names). we need to do this even if mPostedDirtyRegion is
|
|
* empty -- it's orthogonal to the fact that a new buffer was posted,
|
|
* for instance, a degenerate case could be that the user did an empty
|
|
* update but repainted the buffer with appropriate content (after a
|
|
* resize for instance).
|
|
*/
|
|
reloadTexture( mPostedDirtyRegion );
|
|
}
|
|
|
|
void Layer::unlockPageFlip(
|
|
const Transform& planeTransform, Region& outDirtyRegion)
|
|
{
|
|
Region dirtyRegion(mPostedDirtyRegion);
|
|
if (!dirtyRegion.isEmpty()) {
|
|
mPostedDirtyRegion.clear();
|
|
// The dirty region is given in the layer's coordinate space
|
|
// transform the dirty region by the surface's transformation
|
|
// and the global transformation.
|
|
const Layer::State& s(drawingState());
|
|
const Transform tr(planeTransform * s.transform);
|
|
dirtyRegion = tr.transform(dirtyRegion);
|
|
|
|
// At this point, the dirty region is in screen space.
|
|
// Make sure it's constrained by the visible region (which
|
|
// is in screen space as well).
|
|
dirtyRegion.andSelf(visibleRegionScreen);
|
|
outDirtyRegion.orSelf(dirtyRegion);
|
|
}
|
|
if (visibleRegionScreen.isEmpty()) {
|
|
// an invisible layer should not hold a freeze-lock
|
|
// (because it may never be updated and therefore never release it)
|
|
mFreezeLock.clear();
|
|
}
|
|
}
|
|
|
|
void Layer::finishPageFlip()
|
|
{
|
|
ClientRef::Access sharedClient(mUserClientRef);
|
|
SharedBufferServer* lcblk(sharedClient.get());
|
|
if (lcblk) {
|
|
int buf = mBufferManager.getActiveBufferIndex();
|
|
if (buf >= 0) {
|
|
status_t err = lcblk->unlock( buf );
|
|
LOGE_IF(err!=NO_ERROR,
|
|
"layer %p, buffer=%d wasn't locked!",
|
|
this, buf);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void Layer::dump(String8& result, char* buffer, size_t SIZE) const
|
|
{
|
|
LayerBaseClient::dump(result, buffer, SIZE);
|
|
|
|
ClientRef::Access sharedClient(mUserClientRef);
|
|
SharedBufferServer* lcblk(sharedClient.get());
|
|
uint32_t totalTime = 0;
|
|
if (lcblk) {
|
|
SharedBufferStack::Statistics stats = lcblk->getStats();
|
|
totalTime= stats.totalTime;
|
|
result.append( lcblk->dump(" ") );
|
|
}
|
|
|
|
sp<const GraphicBuffer> buf0(getBuffer(0));
|
|
sp<const GraphicBuffer> buf1(getBuffer(1));
|
|
uint32_t w0=0, h0=0, s0=0;
|
|
uint32_t w1=0, h1=0, s1=0;
|
|
if (buf0 != 0) {
|
|
w0 = buf0->getWidth();
|
|
h0 = buf0->getHeight();
|
|
s0 = buf0->getStride();
|
|
}
|
|
if (buf1 != 0) {
|
|
w1 = buf1->getWidth();
|
|
h1 = buf1->getHeight();
|
|
s1 = buf1->getStride();
|
|
}
|
|
snprintf(buffer, SIZE,
|
|
" "
|
|
"format=%2d, [%3ux%3u:%3u] [%3ux%3u:%3u],"
|
|
" freezeLock=%p, dq-q-time=%u us\n",
|
|
mFormat, w0, h0, s0, w1, h1, s1,
|
|
getFreezeLock().get(), totalTime);
|
|
|
|
result.append(buffer);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
Layer::ClientRef::ClientRef()
|
|
: mControlBlock(0), mToken(-1) {
|
|
}
|
|
|
|
Layer::ClientRef::~ClientRef() {
|
|
}
|
|
|
|
int32_t Layer::ClientRef::getToken() const {
|
|
Mutex::Autolock _l(mLock);
|
|
return mToken;
|
|
}
|
|
|
|
sp<UserClient> Layer::ClientRef::getClient() const {
|
|
Mutex::Autolock _l(mLock);
|
|
return mUserClient.promote();
|
|
}
|
|
|
|
status_t Layer::ClientRef::setToken(const sp<UserClient>& uc,
|
|
const sp<SharedBufferServer>& sharedClient, int32_t token) {
|
|
Mutex::Autolock _l(mLock);
|
|
|
|
{ // scope for strong mUserClient reference
|
|
sp<UserClient> userClient(mUserClient.promote());
|
|
if (mUserClient != 0 && mControlBlock != 0) {
|
|
mControlBlock->setStatus(NO_INIT);
|
|
}
|
|
}
|
|
|
|
mUserClient = uc;
|
|
mToken = token;
|
|
mControlBlock = sharedClient;
|
|
return NO_ERROR;
|
|
}
|
|
|
|
sp<UserClient> Layer::ClientRef::getUserClientUnsafe() const {
|
|
return mUserClient.promote();
|
|
}
|
|
|
|
// this class gives us access to SharedBufferServer safely
|
|
// it makes sure the UserClient (and its associated shared memory)
|
|
// won't go away while we're accessing it.
|
|
Layer::ClientRef::Access::Access(const ClientRef& ref)
|
|
: mControlBlock(0)
|
|
{
|
|
Mutex::Autolock _l(ref.mLock);
|
|
mUserClientStrongRef = ref.mUserClient.promote();
|
|
if (mUserClientStrongRef != 0)
|
|
mControlBlock = ref.mControlBlock;
|
|
}
|
|
|
|
Layer::ClientRef::Access::~Access()
|
|
{
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
Layer::BufferManager::BufferManager(TextureManager& tm)
|
|
: mNumBuffers(NUM_BUFFERS), mTextureManager(tm),
|
|
mActiveBuffer(-1), mFailover(false)
|
|
{
|
|
}
|
|
|
|
Layer::BufferManager::~BufferManager()
|
|
{
|
|
}
|
|
|
|
status_t Layer::BufferManager::resize(size_t size)
|
|
{
|
|
Mutex::Autolock _l(mLock);
|
|
mNumBuffers = size;
|
|
return NO_ERROR;
|
|
}
|
|
|
|
// only for debugging
|
|
sp<GraphicBuffer> Layer::BufferManager::getBuffer(size_t index) const {
|
|
return mBufferData[index].buffer;
|
|
}
|
|
|
|
status_t Layer::BufferManager::setActiveBufferIndex(size_t index) {
|
|
mActiveBuffer = index;
|
|
return NO_ERROR;
|
|
}
|
|
|
|
size_t Layer::BufferManager::getActiveBufferIndex() const {
|
|
return mActiveBuffer;
|
|
}
|
|
|
|
Texture Layer::BufferManager::getActiveTexture() const {
|
|
Texture res;
|
|
if (mFailover || mActiveBuffer<0) {
|
|
res = mFailoverTexture;
|
|
} else {
|
|
static_cast<Image&>(res) = mBufferData[mActiveBuffer].texture;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
sp<GraphicBuffer> Layer::BufferManager::getActiveBuffer() const {
|
|
sp<GraphicBuffer> result;
|
|
const ssize_t activeBuffer = mActiveBuffer;
|
|
if (activeBuffer >= 0) {
|
|
BufferData const * const buffers = mBufferData;
|
|
Mutex::Autolock _l(mLock);
|
|
result = buffers[activeBuffer].buffer;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
sp<GraphicBuffer> Layer::BufferManager::detachBuffer(size_t index)
|
|
{
|
|
BufferData* const buffers = mBufferData;
|
|
sp<GraphicBuffer> buffer;
|
|
Mutex::Autolock _l(mLock);
|
|
buffer = buffers[index].buffer;
|
|
buffers[index].buffer = 0;
|
|
return buffer;
|
|
}
|
|
|
|
status_t Layer::BufferManager::attachBuffer(size_t index,
|
|
const sp<GraphicBuffer>& buffer)
|
|
{
|
|
BufferData* const buffers = mBufferData;
|
|
Mutex::Autolock _l(mLock);
|
|
buffers[index].buffer = buffer;
|
|
buffers[index].texture.dirty = true;
|
|
return NO_ERROR;
|
|
}
|
|
|
|
status_t Layer::BufferManager::destroy(EGLDisplay dpy)
|
|
{
|
|
BufferData* const buffers = mBufferData;
|
|
size_t num;
|
|
{ // scope for the lock
|
|
Mutex::Autolock _l(mLock);
|
|
num = mNumBuffers;
|
|
for (size_t i=0 ; i<num ; i++) {
|
|
buffers[i].buffer = 0;
|
|
}
|
|
}
|
|
for (size_t i=0 ; i<num ; i++) {
|
|
destroyTexture(&buffers[i].texture, dpy);
|
|
}
|
|
destroyTexture(&mFailoverTexture, dpy);
|
|
return NO_ERROR;
|
|
}
|
|
|
|
status_t Layer::BufferManager::initEglImage(EGLDisplay dpy,
|
|
const sp<GraphicBuffer>& buffer)
|
|
{
|
|
status_t err = NO_INIT;
|
|
ssize_t index = mActiveBuffer;
|
|
if (index >= 0) {
|
|
if (!mFailover) {
|
|
Image& texture(mBufferData[index].texture);
|
|
err = mTextureManager.initEglImage(&texture, dpy, buffer);
|
|
// if EGLImage fails, we switch to regular texture mode, and we
|
|
// free all resources associated with using EGLImages.
|
|
if (err == NO_ERROR) {
|
|
mFailover = false;
|
|
destroyTexture(&mFailoverTexture, dpy);
|
|
} else {
|
|
mFailover = true;
|
|
const size_t num = mNumBuffers;
|
|
for (size_t i=0 ; i<num ; i++) {
|
|
destroyTexture(&mBufferData[i].texture, dpy);
|
|
}
|
|
}
|
|
} else {
|
|
// we failed once, don't try again
|
|
err = BAD_VALUE;
|
|
}
|
|
}
|
|
return err;
|
|
}
|
|
|
|
status_t Layer::BufferManager::loadTexture(
|
|
const Region& dirty, const GGLSurface& t)
|
|
{
|
|
return mTextureManager.loadTexture(&mFailoverTexture, dirty, t);
|
|
}
|
|
|
|
status_t Layer::BufferManager::destroyTexture(Image* tex, EGLDisplay dpy)
|
|
{
|
|
if (tex->name != -1U) {
|
|
glDeleteTextures(1, &tex->name);
|
|
tex->name = -1U;
|
|
}
|
|
if (tex->image != EGL_NO_IMAGE_KHR) {
|
|
eglDestroyImageKHR(dpy, tex->image);
|
|
tex->image = EGL_NO_IMAGE_KHR;
|
|
}
|
|
return NO_ERROR;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
Layer::SurfaceLayer::SurfaceLayer(const sp<SurfaceFlinger>& flinger,
|
|
const sp<Layer>& owner)
|
|
: Surface(flinger, owner->getIdentity(), owner)
|
|
{
|
|
}
|
|
|
|
Layer::SurfaceLayer::~SurfaceLayer()
|
|
{
|
|
}
|
|
|
|
sp<GraphicBuffer> Layer::SurfaceLayer::requestBuffer(int index,
|
|
uint32_t w, uint32_t h, uint32_t format, uint32_t usage)
|
|
{
|
|
sp<GraphicBuffer> buffer;
|
|
sp<Layer> owner(getOwner());
|
|
if (owner != 0) {
|
|
/*
|
|
* requestBuffer() cannot be called from the main thread
|
|
* as it could cause a dead-lock, since it may have to wait
|
|
* on conditions updated my the main thread.
|
|
*/
|
|
buffer = owner->requestBuffer(index, w, h, format, usage);
|
|
}
|
|
return buffer;
|
|
}
|
|
|
|
status_t Layer::SurfaceLayer::setBufferCount(int bufferCount)
|
|
{
|
|
status_t err = DEAD_OBJECT;
|
|
sp<Layer> owner(getOwner());
|
|
if (owner != 0) {
|
|
/*
|
|
* setBufferCount() cannot be called from the main thread
|
|
* as it could cause a dead-lock, since it may have to wait
|
|
* on conditions updated my the main thread.
|
|
*/
|
|
err = owner->setBufferCount(bufferCount);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
|
|
}; // namespace android
|