| /* |
| * 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. |
| */ |
| |
| #include <stdlib.h> |
| #include <stdint.h> |
| #include <sys/types.h> |
| |
| #include <cutils/properties.h> |
| #include <cutils/native_handle.h> |
| |
| #include <utils/Errors.h> |
| #include <utils/Log.h> |
| #include <utils/StopWatch.h> |
| |
| #include <ui/GraphicBuffer.h> |
| #include <ui/PixelFormat.h> |
| |
| #include <surfaceflinger/Surface.h> |
| |
| #include "clz.h" |
| #include "GLExtensions.h" |
| #include "Layer.h" |
| #include "SurfaceFlinger.h" |
| #include "DisplayHardware/DisplayHardware.h" |
| #include "DisplayHardware/HWComposer.h" |
| |
| |
| #define DEBUG_RESIZE 0 |
| |
| |
| namespace android { |
| |
| template <typename T> inline T min(T a, T b) { |
| return a<b ? a : b; |
| } |
| |
| // --------------------------------------------------------------------------- |
| |
| Layer::Layer(SurfaceFlinger* flinger, |
| DisplayID display, const sp<Client>& client) |
| : LayerBaseClient(flinger, display, client), |
| mFormat(PIXEL_FORMAT_NONE), |
| mGLExtensions(GLExtensions::getInstance()), |
| mNeedsBlending(true), |
| mNeedsDithering(false), |
| mSecure(false), |
| mProtectedByApp(false), |
| mTextureManager(), |
| mBufferManager(mTextureManager), |
| mWidth(0), mHeight(0), |
| mNeedsScaling(false), mFixedSize(false) |
| { |
| } |
| |
| Layer::~Layer() |
| { |
| // FIXME: must be called from the main UI thread |
| EGLDisplay dpy(mFlinger->graphicPlane(0).getEGLDisplay()); |
| mBufferManager.destroy(dpy); |
| |
| // we can use getUserClientUnsafe here because we know we're |
| // single-threaded at that point. |
| sp<UserClient> ourClient(mUserClientRef.getUserClientUnsafe()); |
| if (ourClient != 0) { |
| ourClient->detachLayer(this); |
| } |
| } |
| |
| status_t Layer::setToken(const sp<UserClient>& userClient, |
| SharedClient* sharedClient, int32_t token) |
| { |
| sp<SharedBufferServer> lcblk = new SharedBufferServer( |
| sharedClient, token, mBufferManager.getDefaultBufferCount(), |
| getIdentity()); |
| |
| |
| sp<UserClient> ourClient(mUserClientRef.getClient()); |
| |
| /* |
| * Here it is guaranteed that userClient != ourClient |
| * (see UserClient::getTokenForSurface()). |
| * |
| * We release the token used by this surface in ourClient below. |
| * This should be safe to do so now, since this layer won't be attached |
| * to this client, it should be okay to reuse that id. |
| * |
| * If this causes problems, an other solution would be to keep a list |
| * of all the {UserClient, token} ever used and release them when the |
| * Layer is destroyed. |
| * |
| */ |
| |
| if (ourClient != 0) { |
| ourClient->detachLayer(this); |
| } |
| |
| status_t err = mUserClientRef.setToken(userClient, lcblk, token); |
| LOGE_IF(err != NO_ERROR, |
| "ClientRef::setToken(%p, %p, %u) failed", |
| userClient.get(), lcblk.get(), token); |
| |
| if (err == NO_ERROR) { |
| // we need to free the buffers associated with this surface |
| } |
| |
| return err; |
| } |
| |
| int32_t Layer::getToken() const |
| { |
| return mUserClientRef.getToken(); |
| } |
| |
| sp<UserClient> Layer::getClient() const |
| { |
| return mUserClientRef.getClient(); |
| } |
| |
| // called with SurfaceFlinger::mStateLock as soon as the layer is entered |
| // in the purgatory list |
| void Layer::onRemoved() |
| { |
| ClientRef::Access sharedClient(mUserClientRef); |
| SharedBufferServer* lcblk(sharedClient.get()); |
| if (lcblk) { |
| // wake up the condition |
| lcblk->setStatus(NO_INIT); |
| } |
| } |
| |
| sp<LayerBaseClient::Surface> Layer::createSurface() const |
| { |
| sp<Surface> sur(new SurfaceLayer(mFlinger, const_cast<Layer *>(this))); |
| return sur; |
| } |
| |
| status_t Layer::ditch() |
| { |
| // NOTE: Called from the main UI thread |
| |
| // the layer is not on screen anymore. free as much resources as possible |
| mFreezeLock.clear(); |
| |
| Mutex::Autolock _l(mLock); |
| mWidth = mHeight = 0; |
| return NO_ERROR; |
| } |
| |
| status_t Layer::setBuffers( uint32_t w, uint32_t h, |
| PixelFormat format, uint32_t flags) |
| { |
| // this surfaces pixel format |
| PixelFormatInfo info; |
| status_t err = getPixelFormatInfo(format, &info); |
| if (err) return err; |
| |
| // the display's pixel format |
| const DisplayHardware& hw(graphicPlane(0).displayHardware()); |
| uint32_t const maxSurfaceDims = min( |
| hw.getMaxTextureSize(), hw.getMaxViewportDims()); |
| |
| // never allow a surface larger than what our underlying GL implementation |
| // can handle. |
| if ((uint32_t(w)>maxSurfaceDims) || (uint32_t(h)>maxSurfaceDims)) { |
| return BAD_VALUE; |
| } |
| |
| PixelFormatInfo displayInfo; |
| getPixelFormatInfo(hw.getFormat(), &displayInfo); |
| const uint32_t hwFlags = hw.getFlags(); |
| |
| mFormat = format; |
| mWidth = w; |
| mHeight = h; |
| |
| mReqFormat = format; |
| mReqWidth = w; |
| mReqHeight = h; |
| |
| mSecure = (flags & ISurfaceComposer::eSecure) ? true : false; |
| mProtectedByApp = (flags & ISurfaceComposer::eProtectedByApp) ? true : false; |
| mNeedsBlending = (info.h_alpha - info.l_alpha) > 0 && |
| (flags & ISurfaceComposer::eOpaque) == 0; |
| |
| // we use the red index |
| int displayRedSize = displayInfo.getSize(PixelFormatInfo::INDEX_RED); |
| int layerRedsize = info.getSize(PixelFormatInfo::INDEX_RED); |
| mNeedsDithering = layerRedsize > displayRedSize; |
| |
| return NO_ERROR; |
| } |
| |
| void Layer::setGeometry(hwc_layer_t* hwcl) |
| { |
| hwcl->compositionType = HWC_FRAMEBUFFER; |
| hwcl->hints = 0; |
| hwcl->flags = 0; |
| hwcl->transform = 0; |
| hwcl->blending = HWC_BLENDING_NONE; |
| |
| // we can't do alpha-fade with the hwc HAL |
| const State& s(drawingState()); |
| if (s.alpha < 0xFF) { |
| hwcl->flags = HWC_SKIP_LAYER; |
| return; |
| } |
| |
| // we can only handle simple transformation |
| if (mOrientation & Transform::ROT_INVALID) { |
| hwcl->flags = HWC_SKIP_LAYER; |
| return; |
| } |
| |
| Transform tr(Transform(mOrientation) * Transform(mBufferTransform)); |
| hwcl->transform = tr.getOrientation(); |
| |
| if (needsBlending()) { |
| hwcl->blending = mPremultipliedAlpha ? |
| HWC_BLENDING_PREMULT : HWC_BLENDING_COVERAGE; |
| } |
| |
| hwcl->displayFrame.left = mTransformedBounds.left; |
| hwcl->displayFrame.top = mTransformedBounds.top; |
| hwcl->displayFrame.right = mTransformedBounds.right; |
| hwcl->displayFrame.bottom = mTransformedBounds.bottom; |
| |
| hwcl->visibleRegionScreen.rects = |
| reinterpret_cast<hwc_rect_t const *>( |
| visibleRegionScreen.getArray( |
| &hwcl->visibleRegionScreen.numRects)); |
| } |
| |
| void Layer::setPerFrameData(hwc_layer_t* hwcl) { |
| sp<GraphicBuffer> buffer(mBufferManager.getActiveBuffer()); |
| if (buffer == NULL) { |
| // this can happen if the client never drew into this layer yet, |
| // or if we ran out of memory. In that case, don't let |
| // HWC handle it. |
| hwcl->flags |= HWC_SKIP_LAYER; |
| hwcl->handle = NULL; |
| return; |
| } |
| hwcl->handle = buffer->handle; |
| |
| if (!mBufferCrop.isEmpty()) { |
| hwcl->sourceCrop.left = mBufferCrop.left; |
| hwcl->sourceCrop.top = mBufferCrop.top; |
| hwcl->sourceCrop.right = mBufferCrop.right; |
| hwcl->sourceCrop.bottom = mBufferCrop.bottom; |
| } else { |
| hwcl->sourceCrop.left = 0; |
| hwcl->sourceCrop.top = 0; |
| hwcl->sourceCrop.right = buffer->width; |
| hwcl->sourceCrop.bottom = buffer->height; |
| } |
| } |
| |
| void Layer::reloadTexture(const Region& dirty) |
| { |
| sp<GraphicBuffer> buffer(mBufferManager.getActiveBuffer()); |
| if (buffer == NULL) { |
| // this situation can happen if we ran out of memory for instance. |
| // not much we can do. continue to use whatever texture was bound |
| // to this context. |
| return; |
| } |
| |
| if (mGLExtensions.haveDirectTexture()) { |
| EGLDisplay dpy(mFlinger->graphicPlane(0).getEGLDisplay()); |
| if (mBufferManager.initEglImage(dpy, buffer) != NO_ERROR) { |
| // not sure what we can do here... |
| goto slowpath; |
| } |
| } else { |
| slowpath: |
| GGLSurface t; |
| if (buffer->usage & GRALLOC_USAGE_SW_READ_MASK) { |
| status_t res = buffer->lock(&t, GRALLOC_USAGE_SW_READ_OFTEN); |
| LOGE_IF(res, "error %d (%s) locking buffer %p", |
| res, strerror(res), buffer.get()); |
| if (res == NO_ERROR) { |
| mBufferManager.loadTexture(dirty, t); |
| buffer->unlock(); |
| } |
| } else { |
| // we can't do anything |
| } |
| } |
| } |
| |
| void Layer::drawForSreenShot() const |
| { |
| const bool currentFiltering = mNeedsFiltering; |
| const_cast<Layer*>(this)->mNeedsFiltering = true; |
| LayerBase::drawForSreenShot(); |
| const_cast<Layer*>(this)->mNeedsFiltering = currentFiltering; |
| } |
| |
| void Layer::onDraw(const Region& clip) const |
| { |
| Texture tex(mBufferManager.getActiveTexture()); |
| if (tex.name == -1LU) { |
| // the texture has not been created yet, this Layer has |
| // in fact never been drawn into. This happens frequently with |
| // SurfaceView because the WindowManager can't know when the client |
| // has drawn the first time. |
| |
| // If there is nothing under us, we paint the screen in black, otherwise |
| // we just skip this update. |
| |
| // figure out if there is something below us |
| Region under; |
| const SurfaceFlinger::LayerVector& drawingLayers(mFlinger->mDrawingState.layersSortedByZ); |
| const size_t count = drawingLayers.size(); |
| for (size_t i=0 ; i<count ; ++i) { |
| const sp<LayerBase>& layer(drawingLayers[i]); |
| if (layer.get() == static_cast<LayerBase const*>(this)) |
| break; |
| under.orSelf(layer->visibleRegionScreen); |
| } |
| // if not everything below us is covered, we plug the holes! |
| Region holes(clip.subtract(under)); |
| if (!holes.isEmpty()) { |
| clearWithOpenGL(holes, 0, 0, 0, 1); |
| } |
| return; |
| } |
| drawWithOpenGL(clip, tex); |
| } |
| |
| // As documented in libhardware header, formats in the range |
| // 0x100 - 0x1FF are specific to the HAL implementation, and |
| // are known to have no alpha channel |
| // TODO: move definition for device-specific range into |
| // hardware.h, instead of using hard-coded values here. |
| #define HARDWARE_IS_DEVICE_FORMAT(f) ((f) >= 0x100 && (f) <= 0x1FF) |
| |
| bool Layer::needsBlending(const sp<GraphicBuffer>& buffer) const |
| { |
| // If buffers where set with eOpaque flag, all buffers are known to |
| // be opaque without having to check their actual format |
| if (mNeedsBlending && buffer != NULL) { |
| PixelFormat format = buffer->getPixelFormat(); |
| |
| if (HARDWARE_IS_DEVICE_FORMAT(format)) { |
| return false; |
| } |
| |
| PixelFormatInfo info; |
| status_t err = getPixelFormatInfo(format, &info); |
| if (!err && info.h_alpha <= info.l_alpha) { |
| return false; |
| } |
| } |
| |
| // Return opacity as determined from flags and format options |
| // passed to setBuffers() |
| return mNeedsBlending; |
| } |
| |
| bool Layer::needsBlending() const |
| { |
| if (mBufferManager.hasActiveBuffer()) { |
| return needsBlending(mBufferManager.getActiveBuffer()); |
| } |
| |
| return mNeedsBlending; |
| } |
| |
| bool Layer::needsFiltering() const |
| { |
| if (!(mFlags & DisplayHardware::SLOW_CONFIG)) { |
| // if our buffer is not the same size than ourselves, |
| // we need filtering. |
| Mutex::Autolock _l(mLock); |
| if (mNeedsScaling) |
| return true; |
| } |
| return LayerBase::needsFiltering(); |
| } |
| |
| bool Layer::isProtected() const |
| { |
| sp<GraphicBuffer> activeBuffer(mBufferManager.getActiveBuffer()); |
| return (activeBuffer != 0) && |
| (activeBuffer->getUsage() & GRALLOC_USAGE_PROTECTED); |
| } |
| |
| status_t Layer::setBufferCount(int bufferCount) |
| { |
| ClientRef::Access sharedClient(mUserClientRef); |
| SharedBufferServer* lcblk(sharedClient.get()); |
| if (!lcblk) { |
| // oops, the client is already gone |
| return DEAD_OBJECT; |
| } |
| |
| // NOTE: lcblk->resize() is protected by an internal lock |
| status_t err = lcblk->resize(bufferCount); |
| if (err == NO_ERROR) { |
| EGLDisplay dpy(mFlinger->graphicPlane(0).getEGLDisplay()); |
| mBufferManager.resize(bufferCount, mFlinger, dpy); |
| } |
| |
| return err; |
| } |
| |
| sp<GraphicBuffer> Layer::requestBuffer(int index, |
| uint32_t reqWidth, uint32_t reqHeight, uint32_t reqFormat, |
| uint32_t usage) |
| { |
| sp<GraphicBuffer> buffer; |
| |
| if (int32_t(reqWidth | reqHeight | reqFormat) < 0) |
| return buffer; |
| |
| if ((!reqWidth && reqHeight) || (reqWidth && !reqHeight)) |
| return buffer; |
| |
| // this ensures our client doesn't go away while we're accessing |
| // the shared area. |
| ClientRef::Access sharedClient(mUserClientRef); |
| SharedBufferServer* lcblk(sharedClient.get()); |
| if (!lcblk) { |
| // oops, the client is already gone |
| return buffer; |
| } |
| |
| /* |
| * This is called from the client's Surface::dequeue(). This can happen |
| * at any time, especially while we're in the middle of using the |
| * buffer 'index' as our front buffer. |
| */ |
| |
| status_t err = NO_ERROR; |
| uint32_t w, h, f; |
| { // scope for the lock |
| Mutex::Autolock _l(mLock); |
| |
| // zero means default |
| const bool fixedSize = reqWidth && reqHeight; |
| if (!reqFormat) reqFormat = mFormat; |
| if (!reqWidth) reqWidth = mWidth; |
| if (!reqHeight) reqHeight = mHeight; |
| |
| w = reqWidth; |
| h = reqHeight; |
| f = reqFormat; |
| |
| if ((reqWidth != mReqWidth) || (reqHeight != mReqHeight) || |
| (reqFormat != mReqFormat)) { |
| mReqWidth = reqWidth; |
| mReqHeight = reqHeight; |
| mReqFormat = reqFormat; |
| mFixedSize = fixedSize; |
| mNeedsScaling = mWidth != mReqWidth || mHeight != mReqHeight; |
| |
| lcblk->reallocateAllExcept(index); |
| } |
| } |
| |
| // here we have to reallocate a new buffer because the buffer could be |
| // used as the front buffer, or by a client in our process |
| // (eg: status bar), and we can't release the handle under its feet. |
| const uint32_t effectiveUsage = getEffectiveUsage(usage); |
| buffer = new GraphicBuffer(w, h, f, effectiveUsage); |
| err = buffer->initCheck(); |
| |
| if (err || buffer->handle == 0) { |
| GraphicBuffer::dumpAllocationsToSystemLog(); |
| LOGE_IF(err || buffer->handle == 0, |
| "Layer::requestBuffer(this=%p), index=%d, w=%d, h=%d failed (%s)", |
| this, index, w, h, strerror(-err)); |
| } else { |
| LOGD_IF(DEBUG_RESIZE, |
| "Layer::requestBuffer(this=%p), index=%d, w=%d, h=%d, handle=%p", |
| this, index, w, h, buffer->handle); |
| } |
| |
| if (err == NO_ERROR && buffer->handle != 0) { |
| Mutex::Autolock _l(mLock); |
| mBufferManager.attachBuffer(index, buffer); |
| } |
| return buffer; |
| } |
| |
| uint32_t Layer::getEffectiveUsage(uint32_t usage) const |
| { |
| /* |
| * buffers used for software rendering, but h/w composition |
| * are allocated with SW_READ_OFTEN | SW_WRITE_OFTEN | HW_TEXTURE |
| * |
| * buffers used for h/w rendering and h/w composition |
| * are allocated with HW_RENDER | HW_TEXTURE |
| * |
| * buffers used with h/w rendering and either NPOT or no egl_image_ext |
| * are allocated with SW_READ_RARELY | HW_RENDER |
| * |
| */ |
| |
| if (mSecure) { |
| // secure buffer, don't store it into the GPU |
| usage = GraphicBuffer::USAGE_SW_READ_OFTEN | |
| GraphicBuffer::USAGE_SW_WRITE_OFTEN; |
| } else { |
| // it's allowed to modify the usage flags here, but generally |
| // the requested flags should be honored. |
| // request EGLImage for all buffers |
| usage |= GraphicBuffer::USAGE_HW_TEXTURE; |
| } |
| if (mProtectedByApp) { |
| // need a hardware-protected path to external video sink |
| usage |= GraphicBuffer::USAGE_PROTECTED; |
| } |
| return usage; |
| } |
| |
| uint32_t Layer::doTransaction(uint32_t flags) |
| { |
| const Layer::State& front(drawingState()); |
| const Layer::State& temp(currentState()); |
| |
| const bool sizeChanged = (front.requested_w != temp.requested_w) || |
| (front.requested_h != temp.requested_h); |
| |
| if (sizeChanged) { |
| // the size changed, we need to ask our client to request a new buffer |
| LOGD_IF(DEBUG_RESIZE, |
| "resize (layer=%p), requested (%dx%d), drawing (%d,%d)", |
| this, |
| int(temp.requested_w), int(temp.requested_h), |
| int(front.requested_w), int(front.requested_h)); |
| |
| if (!isFixedSize()) { |
| // we're being resized and there is a freeze display request, |
| // acquire a freeze lock, so that the screen stays put |
| // until we've redrawn at the new size; this is to avoid |
| // glitches upon orientation changes. |
| if (mFlinger->hasFreezeRequest()) { |
| // if the surface is hidden, don't try to acquire the |
| // freeze lock, since hidden surfaces may never redraw |
| if (!(front.flags & ISurfaceComposer::eLayerHidden)) { |
| mFreezeLock = mFlinger->getFreezeLock(); |
| } |
| } |
| |
| // this will make sure LayerBase::doTransaction doesn't update |
| // the drawing state's size |
| Layer::State& editDraw(mDrawingState); |
| editDraw.requested_w = temp.requested_w; |
| editDraw.requested_h = temp.requested_h; |
| |
| // record the new size, form this point on, when the client request |
| // a buffer, it'll get the new size. |
| setBufferSize(temp.requested_w, temp.requested_h); |
| |
| ClientRef::Access sharedClient(mUserClientRef); |
| SharedBufferServer* lcblk(sharedClient.get()); |
| if (lcblk) { |
| // all buffers need reallocation |
| lcblk->reallocateAll(); |
| } |
| } else { |
| // record the new size |
| setBufferSize(temp.requested_w, temp.requested_h); |
| } |
| } |
| |
| if (temp.sequence != front.sequence) { |
| if (temp.flags & ISurfaceComposer::eLayerHidden || temp.alpha == 0) { |
| // this surface is now hidden, so it shouldn't hold a freeze lock |
| // (it may never redraw, which is fine if it is hidden) |
| mFreezeLock.clear(); |
| } |
| } |
| |
| return LayerBase::doTransaction(flags); |
| } |
| |
| void Layer::setBufferSize(uint32_t w, uint32_t h) { |
| Mutex::Autolock _l(mLock); |
| mWidth = w; |
| mHeight = h; |
| mNeedsScaling = mWidth != mReqWidth || mHeight != mReqHeight; |
| } |
| |
| bool Layer::isFixedSize() const { |
| Mutex::Autolock _l(mLock); |
| return mFixedSize; |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // pageflip handling... |
| // ---------------------------------------------------------------------------- |
| |
| void Layer::lockPageFlip(bool& recomputeVisibleRegions) |
| { |
| ClientRef::Access sharedClient(mUserClientRef); |
| SharedBufferServer* lcblk(sharedClient.get()); |
| if (!lcblk) { |
| // client died |
| recomputeVisibleRegions = true; |
| return; |
| } |
| |
| ssize_t buf = lcblk->retireAndLock(); |
| if (buf == NOT_ENOUGH_DATA) { |
| // NOTE: This is not an error, it simply means there is nothing to |
| // retire. The buffer is locked because we will use it |
| // for composition later in the loop |
| return; |
| } |
| |
| if (buf < NO_ERROR) { |
| LOGE("retireAndLock() buffer index (%d) out of range", int(buf)); |
| mPostedDirtyRegion.clear(); |
| return; |
| } |
| |
| // we retired a buffer, which becomes the new front buffer |
| |
| const bool noActiveBuffer = !mBufferManager.hasActiveBuffer(); |
| const bool activeBlending = |
| noActiveBuffer ? true : needsBlending(mBufferManager.getActiveBuffer()); |
| |
| if (mBufferManager.setActiveBufferIndex(buf) < NO_ERROR) { |
| LOGE("retireAndLock() buffer index (%d) out of range", int(buf)); |
| mPostedDirtyRegion.clear(); |
| return; |
| } |
| |
| if (noActiveBuffer) { |
| // we didn't have an active buffer, we need to recompute |
| // our visible region |
| recomputeVisibleRegions = true; |
| } |
| |
| sp<GraphicBuffer> newFrontBuffer(getBuffer(buf)); |
| if (newFrontBuffer != NULL) { |
| if (!noActiveBuffer && activeBlending != needsBlending(newFrontBuffer)) { |
| // new buffer has different opacity than previous active buffer, need |
| // to recompute visible regions accordingly |
| recomputeVisibleRegions = true; |
| } |
| |
| // get the dirty region |
| // compute the posted region |
| const Region dirty(lcblk->getDirtyRegion(buf)); |
| mPostedDirtyRegion = dirty.intersect( newFrontBuffer->getBounds() ); |
| |
| // update the layer size and release freeze-lock |
| const Layer::State& front(drawingState()); |
| if (newFrontBuffer->getWidth() == front.requested_w && |
| newFrontBuffer->getHeight() == front.requested_h) |
| { |
| if ((front.w != front.requested_w) || |
| (front.h != front.requested_h)) |
| { |
| // Here we pretend the transaction happened by updating the |
| // current and drawing states. Drawing state is only accessed |
| // in this thread, no need to have it locked |
| Layer::State& editDraw(mDrawingState); |
| editDraw.w = editDraw.requested_w; |
| editDraw.h = editDraw.requested_h; |
| |
| // We also need to update the current state so that we don't |
| // end-up doing too much work during the next transaction. |
| // NOTE: We actually don't need hold the transaction lock here |
| // because State::w and State::h are only accessed from |
| // this thread |
| Layer::State& editTemp(currentState()); |
| editTemp.w = editDraw.w; |
| editTemp.h = editDraw.h; |
| |
| // recompute visible region |
| recomputeVisibleRegions = true; |
| } |
| |
| // we now have the correct size, unfreeze the screen |
| mFreezeLock.clear(); |
| } |
| |
| // get the crop region |
| setBufferCrop( lcblk->getCrop(buf) ); |
| |
| // get the transformation |
| setBufferTransform( lcblk->getTransform(buf) ); |
| |
| } else { |
| // this should not happen unless we ran out of memory while |
| // 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::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 (userClient != 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), |
| mActiveBufferIndex(-1), mFailover(false) |
| { |
| } |
| |
| Layer::BufferManager::~BufferManager() |
| { |
| } |
| |
| status_t Layer::BufferManager::resize(size_t size, |
| const sp<SurfaceFlinger>& flinger, EGLDisplay dpy) |
| { |
| Mutex::Autolock _l(mLock); |
| |
| if (size < mNumBuffers) { |
| // If there is an active texture, move it into slot 0 if needed |
| if (mActiveBufferIndex > 0) { |
| BufferData activeBufferData = mBufferData[mActiveBufferIndex]; |
| mBufferData[mActiveBufferIndex] = mBufferData[0]; |
| mBufferData[0] = activeBufferData; |
| mActiveBufferIndex = 0; |
| } |
| |
| // Free the buffers that are no longer needed. |
| for (size_t i = size; i < mNumBuffers; i++) { |
| mBufferData[i].buffer = 0; |
| |
| // Create a message to destroy the textures on SurfaceFlinger's GL |
| // thread. |
| class MessageDestroyTexture : public MessageBase { |
| Image mTexture; |
| EGLDisplay mDpy; |
| public: |
| MessageDestroyTexture(const Image& texture, EGLDisplay dpy) |
| : mTexture(texture), mDpy(dpy) { } |
| virtual bool handler() { |
| status_t err = Layer::BufferManager::destroyTexture( |
| &mTexture, mDpy); |
| LOGE_IF(err<0, "error destroying texture: %d (%s)", |
| mTexture.name, strerror(-err)); |
| return true; // XXX: err == 0; ???? |
| } |
| }; |
| |
| MessageDestroyTexture *msg = new MessageDestroyTexture( |
| mBufferData[i].texture, dpy); |
| |
| // Don't allow this texture to be cleaned up by |
| // BufferManager::destroy. |
| mBufferData[i].texture.name = -1U; |
| mBufferData[i].texture.image = EGL_NO_IMAGE_KHR; |
| |
| // Post the message to the SurfaceFlinger object. |
| flinger->postMessageAsync(msg); |
| } |
| } |
| |
| 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) { |
| BufferData const * const buffers = mBufferData; |
| Mutex::Autolock _l(mLock); |
| mActiveBuffer = buffers[index].buffer; |
| mActiveBufferIndex = index; |
| return NO_ERROR; |
| } |
| |
| size_t Layer::BufferManager::getActiveBufferIndex() const { |
| return mActiveBufferIndex; |
| } |
| |
| Texture Layer::BufferManager::getActiveTexture() const { |
| Texture res; |
| if (mFailover || mActiveBufferIndex<0) { |
| res = mFailoverTexture; |
| } else { |
| static_cast<Image&>(res) = mBufferData[mActiveBufferIndex].texture; |
| } |
| return res; |
| } |
| |
| sp<GraphicBuffer> Layer::BufferManager::getActiveBuffer() const { |
| return mActiveBuffer; |
| } |
| |
| bool Layer::BufferManager::hasActiveBuffer() const { |
| return mActiveBufferIndex >= 0; |
| } |
| |
| 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 = mActiveBufferIndex; |
| if (index >= 0) { |
| if (!mFailover) { |
| { |
| // Without that lock, there is a chance of race condition |
| // where while composing a specific index, requestBuf |
| // with the same index can be executed and touch the same data |
| // that is being used in initEglImage. |
| // (e.g. dirty flag in texture) |
| Mutex::Autolock _l(mLock); |
| 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 |