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Diffstat (limited to 'libs/surfaceflinger/Layer.cpp')
| -rw-r--r-- | libs/surfaceflinger/Layer.cpp | 568 |
1 files changed, 0 insertions, 568 deletions
diff --git a/libs/surfaceflinger/Layer.cpp b/libs/surfaceflinger/Layer.cpp deleted file mode 100644 index f65d669..0000000 --- a/libs/surfaceflinger/Layer.cpp +++ /dev/null @@ -1,568 +0,0 @@ -/* - * 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 "SurfaceFlinger" - -#include <stdlib.h> -#include <stdint.h> -#include <sys/types.h> - -#include <cutils/properties.h> - -#include <utils/Errors.h> -#include <utils/Log.h> -#include <utils/StopWatch.h> - -#include <ui/PixelFormat.h> -#include <ui/EGLDisplaySurface.h> - -#include "clz.h" -#include "Layer.h" -#include "LayerBitmap.h" -#include "SurfaceFlinger.h" -#include "VRamHeap.h" -#include "DisplayHardware/DisplayHardware.h" - - -#define DEBUG_RESIZE 0 - - -namespace android { - -// --------------------------------------------------------------------------- - -const uint32_t Layer::typeInfo = LayerBaseClient::typeInfo | 4; -const char* const Layer::typeID = "Layer"; - -// --------------------------------------------------------------------------- - -Layer::Layer(SurfaceFlinger* flinger, DisplayID display, Client* c, int32_t i) - : LayerBaseClient(flinger, display, c, i), - mSecure(false), - mFrontBufferIndex(1), - mNeedsBlending(true), - mResizeTransactionDone(false), - mTextureName(-1U), mTextureWidth(0), mTextureHeight(0) -{ - // no OpenGL operation is possible here, since we might not be - // in the OpenGL thread. -} - -Layer::~Layer() -{ - client->free(clientIndex()); - // this should always be called from the OpenGL thread - if (mTextureName != -1U) { - //glDeleteTextures(1, &mTextureName); - deletedTextures.add(mTextureName); - } -} - -void Layer::initStates(uint32_t w, uint32_t h, uint32_t flags) -{ - LayerBase::initStates(w,h,flags); - - if (flags & ISurfaceComposer::eDestroyBackbuffer) - lcblk->flags |= eNoCopyBack; -} - -sp<LayerBaseClient::Surface> Layer::getSurface() const -{ - return mSurface; -} - -status_t Layer::setBuffers( Client* client, - uint32_t w, uint32_t h, - PixelFormat format, uint32_t flags) -{ - PixelFormatInfo info; - status_t err = getPixelFormatInfo(format, &info); - if (err) return err; - - // TODO: if eHardware is explicitly requested, we should fail - // on systems where we can't allocate memory that can be used with - // DMA engines for instance. - - // FIXME: we always ask for hardware for now (this should come from copybit) - flags |= ISurfaceComposer::eHardware; - - const uint32_t memory_flags = flags & - (ISurfaceComposer::eGPU | - ISurfaceComposer::eHardware | - ISurfaceComposer::eSecure); - - // pixel-alignment. the final alignment may be bigger because - // we always force a 4-byte aligned bpr. - uint32_t alignment = 1; - - if (flags & ISurfaceComposer::eGPU) { - // FIXME: this value should come from the h/w - alignment = 8; - // FIXME: this is msm7201A specific, as its GPU only supports - // BGRA_8888. - if (format == PIXEL_FORMAT_RGBA_8888) { - format = PIXEL_FORMAT_BGRA_8888; - } - } - - mSecure = (flags & ISurfaceComposer::eSecure) ? true : false; - mNeedsBlending = (info.h_alpha - info.l_alpha) > 0; - sp<MemoryDealer> allocators[2]; - for (int i=0 ; i<2 ; i++) { - allocators[i] = client->createAllocator(memory_flags); - if (allocators[i] == 0) - return NO_MEMORY; - mBuffers[i].init(allocators[i]); - int err = mBuffers[i].setBits(w, h, alignment, format, LayerBitmap::SECURE_BITS); - if (err != NO_ERROR) - return err; - mBuffers[i].clear(); // clear the bits for security - mBuffers[i].getInfo(lcblk->surface + i); - } - - mSurface = new Surface(clientIndex(), - allocators[0]->getMemoryHeap(), - allocators[1]->getMemoryHeap(), - mIdentity); - - return NO_ERROR; -} - -void Layer::reloadTexture(const Region& dirty) -{ - if (UNLIKELY(mTextureName == -1U)) { - // create the texture name the first time - // can't do that in the ctor, because it runs in another thread. - mTextureName = createTexture(); - } - const GGLSurface& t(frontBuffer().surface()); - loadTexture(dirty, mTextureName, t, mTextureWidth, mTextureHeight); -} - - -void Layer::onDraw(const Region& clip) const -{ - if (UNLIKELY(mTextureName == -1LU)) { - //LOGW("Layer %p doesn't have a texture", this); - // the texture has not been created yet, this Layer has - // in fact never been drawn into. this happens frequently with - // SurfaceView. - clearWithOpenGL(clip); - return; - } - - const DisplayHardware& hw(graphicPlane(0).displayHardware()); - const LayerBitmap& front(frontBuffer()); - const GGLSurface& t(front.surface()); - - status_t err = NO_ERROR; - const int can_use_copybit = canUseCopybit(); - if (can_use_copybit) { - // StopWatch watch("copybit"); - const State& s(drawingState()); - - copybit_image_t dst; - hw.getDisplaySurface(&dst); - const copybit_rect_t& drect - = reinterpret_cast<const copybit_rect_t&>(mTransformedBounds); - - copybit_image_t src; - front.getBitmapSurface(&src); - copybit_rect_t srect = { 0, 0, t.width, t.height }; - - copybit_device_t* copybit = mFlinger->getBlitEngine(); - copybit->set_parameter(copybit, COPYBIT_TRANSFORM, getOrientation()); - copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, s.alpha); - copybit->set_parameter(copybit, COPYBIT_DITHER, - s.flags & ISurfaceComposer::eLayerDither ? - COPYBIT_ENABLE : COPYBIT_DISABLE); - - region_iterator it(clip); - err = copybit->stretch(copybit, &dst, &src, &drect, &srect, &it); - } - - if (!can_use_copybit || err) { - drawWithOpenGL(clip, mTextureName, t); - } -} - -status_t Layer::reallocateBuffer(int32_t index, uint32_t w, uint32_t h) -{ - LOGD_IF(DEBUG_RESIZE, - "reallocateBuffer (layer=%p), " - "requested (%dx%d), " - "index=%d, (%dx%d), (%dx%d)", - this, - int(w), int(h), - int(index), - int(mBuffers[0].width()), int(mBuffers[0].height()), - int(mBuffers[1].width()), int(mBuffers[1].height())); - - status_t err = mBuffers[index].resize(w, h); - if (err == NO_ERROR) { - mBuffers[index].getInfo(lcblk->surface + index); - } else { - LOGE("resizing buffer %d to (%u,%u) failed [%08x] %s", - index, w, h, err, strerror(err)); - // XXX: what to do, what to do? We could try to free some - // hidden surfaces, instead of killing this one? - } - return err; -} - -uint32_t Layer::doTransaction(uint32_t flags) -{ - const Layer::State& front(drawingState()); - const Layer::State& temp(currentState()); - - // the test front.{w|h} != temp.{w|h} is not enough because it is possible - // that the size changed back to its previous value before the buffer - // was resized (in the eLocked case below), in which case, we still - // need to execute the code below so the clients have a chance to be - // release. resze() deals with the fact that the size can be the same. - - /* - * Various states we could be in... - - resize = state & eResizeRequested; - if (backbufferChanged) { - if (resize == 0) { - // ERROR, the resized buffer doesn't have its resize flag set - } else if (resize == mask) { - // ERROR one of the buffer has already been resized - } else if (resize == mask ^ eResizeRequested) { - // ERROR, the resized buffer doesn't have its resize flag set - } else if (resize == eResizeRequested) { - // OK, Normal case, proceed with resize - } - } else { - if (resize == 0) { - // OK, nothing special, do nothing - } else if (resize == mask) { - // restarted transaction, do nothing - } else if (resize == mask ^ eResizeRequested) { - // restarted transaction, do nothing - } else if (resize == eResizeRequested) { - // OK, size reset to previous value, proceed with resize - } - } - */ - - // Index of the back buffer - const bool backbufferChanged = (front.w != temp.w) || (front.h != temp.h); - const uint32_t state = lcblk->swapState; - const int32_t clientBackBufferIndex = layer_cblk_t::backBuffer(state); - const uint32_t mask = clientBackBufferIndex ? eResizeBuffer1 : eResizeBuffer0; - uint32_t resizeFlags = state & eResizeRequested; - - if (UNLIKELY(backbufferChanged && (resizeFlags != eResizeRequested))) { - LOGE( "backbuffer size changed, but both resize flags are not set! " - "(layer=%p), state=%08x, requested (%dx%d), drawing (%d,%d), " - "index=%d, (%dx%d), (%dx%d)", - this, state, - int(temp.w), int(temp.h), - int(drawingState().w), int(drawingState().h), - int(clientBackBufferIndex), - int(mBuffers[0].width()), int(mBuffers[0].height()), - int(mBuffers[1].width()), int(mBuffers[1].height())); - // if we get there we're pretty screwed. the only reasonable - // thing to do is to pretend we should do the resize since - // backbufferChanged is set (this also will give a chance to - // client to get unblocked) - resizeFlags = eResizeRequested; - } - - if (resizeFlags == eResizeRequested) { - // NOTE: asserting that clientBackBufferIndex!=mFrontBufferIndex - // here, would be wrong and misleading because by this point - // mFrontBufferIndex has not been updated yet. - - LOGD_IF(DEBUG_RESIZE, - "resize (layer=%p), state=%08x, " - "requested (%dx%d), " - "drawing (%d,%d), " - "index=%d, (%dx%d), (%dx%d)", - this, state, - int(temp.w), int(temp.h), - int(drawingState().w), int(drawingState().h), - int(clientBackBufferIndex), - int(mBuffers[0].width()), int(mBuffers[0].height()), - int(mBuffers[1].width()), int(mBuffers[1].height())); - - if (state & eLocked) { - // if the buffer is locked, we can't resize anything because - // - the backbuffer is currently in use by the user - // - the front buffer is being shown - // We just act as if the transaction didn't happen and we - // reschedule it later... - flags |= eRestartTransaction; - } else { - // This buffer needs to be resized - status_t err = - resize(clientBackBufferIndex, temp.w, temp.h, "transaction"); - if (err == NO_ERROR) { - const uint32_t mask = clientBackBufferIndex ? eResizeBuffer1 : eResizeBuffer0; - android_atomic_and(~mask, &(lcblk->swapState)); - // since a buffer became available, we can let the client go... - mFlinger->scheduleBroadcast(client); - mResizeTransactionDone = true; - - // 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(); - } - } - } - } - } - - 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); -} - -status_t Layer::resize( - int32_t clientBackBufferIndex, - uint32_t width, uint32_t height, - const char* what) -{ - /* - * handle resize (backbuffer and frontbuffer reallocation) - */ - - const LayerBitmap& clientBackBuffer(mBuffers[clientBackBufferIndex]); - - // if the new (transaction) size is != from the the backbuffer - // then we need to reallocate the backbuffer - bool backbufferChanged = (clientBackBuffer.width() != width) || - (clientBackBuffer.height() != height); - - LOGD_IF(!backbufferChanged, - "(%s) eResizeRequested (layer=%p), but size not changed: " - "requested (%dx%d), drawing (%d,%d), current (%d,%d)," - "state=%08lx, index=%d, (%dx%d), (%dx%d)", - what, this, - int(width), int(height), - int(drawingState().w), int(drawingState().h), - int(currentState().w), int(currentState().h), - long(lcblk->swapState), - int(clientBackBufferIndex), - int(mBuffers[0].width()), int(mBuffers[0].height()), - int(mBuffers[1].width()), int(mBuffers[1].height())); - - // this can happen when changing the size back and forth quickly - status_t err = NO_ERROR; - if (backbufferChanged) { - err = reallocateBuffer(clientBackBufferIndex, width, height); - } - if (UNLIKELY(err != NO_ERROR)) { - // couldn't reallocate the surface - android_atomic_write(eInvalidSurface, &lcblk->swapState); - memset(lcblk->surface+clientBackBufferIndex, 0, sizeof(surface_info_t)); - } - return err; -} - -void Layer::setSizeChanged(uint32_t w, uint32_t h) -{ - LOGD_IF(DEBUG_RESIZE, - "setSizeChanged w=%d, h=%d (old: w=%d, h=%d)", - w, h, mCurrentState.w, mCurrentState.h); - android_atomic_or(eResizeRequested, &(lcblk->swapState)); -} - -// ---------------------------------------------------------------------------- -// pageflip handling... -// ---------------------------------------------------------------------------- - -void Layer::lockPageFlip(bool& recomputeVisibleRegions) -{ - uint32_t state = android_atomic_or(eBusy, &(lcblk->swapState)); - // preemptively block the client, because he might set - // eFlipRequested at any time and want to use this buffer - // for the next frame. This will be unset below if it - // turns out we didn't need it. - - uint32_t mask = eInvalidSurface | eFlipRequested | eResizeRequested; - if (!(state & mask)) - return; - - if (UNLIKELY(state & eInvalidSurface)) { - // if eInvalidSurface is set, this means the surface - // became invalid during a transaction (NO_MEMORY for instance) - mFlinger->scheduleBroadcast(client); - return; - } - - if (UNLIKELY(state & eFlipRequested)) { - uint32_t oldState; - mPostedDirtyRegion = post(&oldState, recomputeVisibleRegions); - if (oldState & eNextFlipPending) { - // Process another round (we know at least a buffer - // is ready for that client). - mFlinger->signalEvent(); - } - } -} - -Region Layer::post(uint32_t* previousSate, bool& recomputeVisibleRegions) -{ - // atomically swap buffers and (re)set eFlipRequested - int32_t oldValue, newValue; - layer_cblk_t * const lcblk = this->lcblk; - do { - oldValue = lcblk->swapState; - // get the current value - - LOG_ASSERT(oldValue&eFlipRequested, - "eFlipRequested not set, yet we're flipping! (state=0x%08lx)", - long(oldValue)); - - newValue = (oldValue ^ eIndex); - // swap buffers - - newValue &= ~(eFlipRequested | eNextFlipPending); - // clear eFlipRequested and eNextFlipPending - - if (oldValue & eNextFlipPending) - newValue |= eFlipRequested; - // if eNextFlipPending is set (second buffer already has something - // in it) we need to reset eFlipRequested because the client - // might never do it - - } while(android_atomic_cmpxchg(oldValue, newValue, &(lcblk->swapState))); - *previousSate = oldValue; - - const int32_t index = (newValue & eIndex) ^ 1; - mFrontBufferIndex = index; - - // ... post the new front-buffer - Region dirty(lcblk->region + index); - dirty.andSelf(frontBuffer().bounds()); - - //LOGI("Did post oldValue=%08lx, newValue=%08lx, mFrontBufferIndex=%u\n", - // oldValue, newValue, mFrontBufferIndex); - //dirty.dump("dirty"); - - if (UNLIKELY(oldValue & eResizeRequested)) { - - LOGD_IF(DEBUG_RESIZE, - "post (layer=%p), state=%08x, " - "index=%d, (%dx%d), (%dx%d)", - this, newValue, - int(1-index), - int(mBuffers[0].width()), int(mBuffers[0].height()), - int(mBuffers[1].width()), int(mBuffers[1].height())); - - // here, we just posted the surface and we have resolved - // the front/back buffer indices. The client is blocked, so - // it cannot start using the new backbuffer. - - // If the backbuffer was resized in THIS round, we actually cannot - // resize the frontbuffer because it has *just* been drawn (and we - // would have nothing to draw). In this case we just skip the resize - // it'll happen after the next page flip or during the next - // transaction. - - const uint32_t mask = (1-index) ? eResizeBuffer1 : eResizeBuffer0; - if (mResizeTransactionDone && (newValue & mask)) { - // Resize the layer's second buffer only if the transaction - // happened. It may not have happened yet if eResizeRequested - // was set immediately after the "transactionRequested" test, - // in which case the drawing state's size would be wrong. - mFreezeLock.clear(); - const Layer::State& s(drawingState()); - if (resize(1-index, s.w, s.h, "post") == NO_ERROR) { - do { - oldValue = lcblk->swapState; - if ((oldValue & eResizeRequested) == eResizeRequested) { - // ugh, another resize was requested since we processed - // the first buffer, don't free the client, and let - // the next transaction handle everything. - break; - } - newValue = oldValue & ~mask; - } while(android_atomic_cmpxchg(oldValue, newValue, &(lcblk->swapState))); - } - mResizeTransactionDone = false; - recomputeVisibleRegions = true; - this->contentDirty = true; - } - } - - reloadTexture(dirty); - - return dirty; -} - -Point Layer::getPhysicalSize() const -{ - const LayerBitmap& front(frontBuffer()); - return Point(front.width(), front.height()); -} - -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); - - // client could be blocked, so signal them so they get a - // chance to reevaluate their condition. - mFlinger->scheduleBroadcast(client); - } -} - -void Layer::finishPageFlip() -{ - if (LIKELY(!(lcblk->swapState & eInvalidSurface))) { - LOGE_IF(!(lcblk->swapState & eBusy), - "layer %p wasn't locked!", this); - android_atomic_and(~eBusy, &(lcblk->swapState)); - } - mFlinger->scheduleBroadcast(client); -} - - -// --------------------------------------------------------------------------- - - -}; // namespace android |