| /* |
| * 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/compiler.h> |
| #include <cutils/native_handle.h> |
| #include <cutils/properties.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 "DisplayHardware/DisplayHardware.h" |
| #include "DisplayHardware/HWComposer.h" |
| #include "GLExtensions.h" |
| #include "Layer.h" |
| #include "SurfaceFlinger.h" |
| #include "SurfaceTextureLayer.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), |
| mTextureName(-1U), |
| mQueuedFrames(0), |
| mCurrentTransform(0), |
| mCurrentOpacity(true), |
| mFormat(PIXEL_FORMAT_NONE), |
| mGLExtensions(GLExtensions::getInstance()), |
| mOpaqueLayer(true), |
| mNeedsDithering(false), |
| mSecure(false), |
| mProtectedByApp(false), |
| mFixedSize(false) |
| { |
| mCurrentCrop.makeInvalid(); |
| glGenTextures(1, &mTextureName); |
| } |
| |
| void Layer::destroy(RefBase const* base) { |
| mFlinger->destroyLayer(static_cast<LayerBase const*>(base)); |
| } |
| |
| void Layer::onFirstRef() |
| { |
| LayerBaseClient::onFirstRef(); |
| setDestroyer(this); |
| |
| struct FrameQueuedListener : public SurfaceTexture::FrameAvailableListener { |
| FrameQueuedListener(Layer* layer) : mLayer(layer) { } |
| private: |
| wp<Layer> mLayer; |
| virtual void onFrameAvailable() { |
| sp<Layer> that(mLayer.promote()); |
| if (that != 0) { |
| that->onFrameQueued(); |
| } |
| } |
| }; |
| mSurfaceTexture = new SurfaceTextureLayer(mTextureName, this); |
| mSurfaceTexture->setFrameAvailableListener(new FrameQueuedListener(this)); |
| mSurfaceTexture->setSynchronousMode(true); |
| mSurfaceTexture->setBufferCountServer(2); |
| } |
| |
| Layer::~Layer() |
| { |
| glDeleteTextures(1, &mTextureName); |
| } |
| |
| void Layer::onFrameQueued() { |
| if (android_atomic_or(1, &mQueuedFrames) == 0) { |
| mFlinger->signalEvent(); |
| } |
| } |
| |
| // called with SurfaceFlinger::mStateLock as soon as the layer is entered |
| // in the purgatory list |
| void Layer::onRemoved() |
| { |
| } |
| |
| sp<ISurface> Layer::createSurface() |
| { |
| class BSurface : public BnSurface, public LayerCleaner { |
| wp<const Layer> mOwner; |
| virtual sp<ISurfaceTexture> getSurfaceTexture() const { |
| sp<ISurfaceTexture> res; |
| sp<const Layer> that( mOwner.promote() ); |
| if (that != NULL) { |
| res = that->mSurfaceTexture; |
| } |
| return res; |
| } |
| public: |
| BSurface(const sp<SurfaceFlinger>& flinger, |
| const sp<Layer>& layer) |
| : LayerCleaner(flinger, layer), mOwner(layer) { } |
| }; |
| sp<ISurface> sur(new BSurface(mFlinger, this)); |
| return sur; |
| } |
| |
| 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; |
| |
| mSecure = (flags & ISurfaceComposer::eSecure) ? true : false; |
| mProtectedByApp = (flags & ISurfaceComposer::eProtectedByApp) ? true : false; |
| mOpaqueLayer = (flags & ISurfaceComposer::eOpaque); |
| mCurrentOpacity = getOpacityForFormat(format); |
| |
| mSurfaceTexture->setDefaultBufferSize(w, h); |
| mSurfaceTexture->setDefaultBufferFormat(format); |
| |
| // 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; |
| } |
| |
| // FIXME: shouldn't we take the state's transform into account here? |
| |
| Transform tr(Transform(mOrientation) * Transform(mCurrentTransform)); |
| hwcl->transform = tr.getOrientation(); |
| |
| if (!isOpaque()) { |
| 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) { |
| const sp<GraphicBuffer>& buffer(mActiveBuffer); |
| 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 (isCropped()) { |
| hwcl->sourceCrop.left = mCurrentCrop.left; |
| hwcl->sourceCrop.top = mCurrentCrop.top; |
| hwcl->sourceCrop.right = mCurrentCrop.right; |
| hwcl->sourceCrop.bottom = mCurrentCrop.bottom; |
| } else { |
| hwcl->sourceCrop.left = 0; |
| hwcl->sourceCrop.top = 0; |
| hwcl->sourceCrop.right = buffer->width; |
| hwcl->sourceCrop.bottom = buffer->height; |
| } |
| } |
| |
| static inline uint16_t pack565(int r, int g, int b) { |
| return (r<<11)|(g<<5)|b; |
| } |
| void Layer::onDraw(const Region& clip) const |
| { |
| if (CC_UNLIKELY(mActiveBuffer == 0)) { |
| // 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; |
| } |
| |
| GLenum target = mSurfaceTexture->getCurrentTextureTarget(); |
| glBindTexture(target, mTextureName); |
| if (getFiltering() || needsFiltering() || isFixedSize() || isCropped()) { |
| // TODO: we could be more subtle with isFixedSize() |
| glTexParameterx(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
| glTexParameterx(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
| } else { |
| glTexParameterx(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| glTexParameterx(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| } |
| glEnable(target); |
| glMatrixMode(GL_TEXTURE); |
| glLoadMatrixf(mTextureMatrix); |
| glMatrixMode(GL_MODELVIEW); |
| |
| drawWithOpenGL(clip); |
| |
| glDisable(target); |
| } |
| |
| // 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::getOpacityForFormat(uint32_t format) |
| { |
| if (HARDWARE_IS_DEVICE_FORMAT(format)) { |
| return true; |
| } |
| PixelFormatInfo info; |
| status_t err = getPixelFormatInfo(PixelFormat(format), &info); |
| // in case of error (unknown format), we assume no blending |
| return (err || info.h_alpha <= info.l_alpha); |
| } |
| |
| |
| bool Layer::isOpaque() const |
| { |
| // if we don't have a buffer yet, we're translucent regardless of the |
| // layer's opaque flag. |
| if (mActiveBuffer == 0) |
| return false; |
| |
| // if the layer has the opaque flag, then we're always opaque, |
| // otherwise we use the current buffer's format. |
| return mOpaqueLayer || mCurrentOpacity; |
| } |
| |
| bool Layer::isProtected() const |
| { |
| const sp<GraphicBuffer>& activeBuffer(mActiveBuffer); |
| return (activeBuffer != 0) && |
| (activeBuffer->getUsage() & GRALLOC_USAGE_PROTECTED); |
| } |
| |
| 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), " |
| "fixedSize=%d", |
| this, |
| int(temp.requested_w), int(temp.requested_h), |
| int(front.requested_w), int(front.requested_h), |
| isFixedSize()); |
| |
| 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. |
| mSurfaceTexture->setDefaultBufferSize(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); |
| } |
| |
| bool Layer::isFixedSize() const { |
| Mutex::Autolock _l(mLock); |
| return mFixedSize; |
| } |
| |
| void Layer::setFixedSize(bool fixedSize) |
| { |
| Mutex::Autolock _l(mLock); |
| mFixedSize = fixedSize; |
| } |
| |
| bool Layer::isCropped() const { |
| return !mCurrentCrop.isEmpty(); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // pageflip handling... |
| // ---------------------------------------------------------------------------- |
| |
| void Layer::lockPageFlip(bool& recomputeVisibleRegions) |
| { |
| if (android_atomic_and(0, &mQueuedFrames)) { |
| if (mSurfaceTexture->updateTexImage() < NO_ERROR) { |
| // something happened! |
| recomputeVisibleRegions = true; |
| return; |
| } |
| |
| // signal another event if we have more frames waiting |
| if (mSurfaceTexture->getQueuedCount()) { |
| if (android_atomic_or(1, &mQueuedFrames) == 0) { |
| mFlinger->signalEvent(); |
| } |
| } |
| |
| mActiveBuffer = mSurfaceTexture->getCurrentBuffer(); |
| mSurfaceTexture->getTransformMatrix(mTextureMatrix); |
| |
| const Rect crop(mSurfaceTexture->getCurrentCrop()); |
| const uint32_t transform(mSurfaceTexture->getCurrentTransform()); |
| if ((crop != mCurrentCrop) || (transform != mCurrentTransform)) { |
| mCurrentCrop = crop; |
| mCurrentTransform = transform; |
| mFlinger->invalidateHwcGeometry(); |
| } |
| |
| const bool opacity(getOpacityForFormat(mActiveBuffer->format)); |
| if (opacity != mCurrentOpacity) { |
| mCurrentOpacity = opacity; |
| recomputeVisibleRegions = true; |
| } |
| |
| const GLenum target(mSurfaceTexture->getCurrentTextureTarget()); |
| glTexParameterx(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| glTexParameterx(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| |
| // update the layer size and release freeze-lock |
| const Layer::State& front(drawingState()); |
| |
| // FIXME: mPostedDirtyRegion = dirty & bounds |
| mPostedDirtyRegion.set(front.w, front.h); |
| |
| sp<GraphicBuffer> newFrontBuffer(mActiveBuffer); |
| if ((newFrontBuffer->getWidth() == front.requested_w && |
| newFrontBuffer->getHeight() == front.requested_h) || |
| isFixedSize()) |
| { |
| 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(); |
| } |
| } |
| } |
| |
| 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); |
| |
| sp<const GraphicBuffer> buf0(mActiveBuffer); |
| uint32_t w0=0, h0=0, s0=0, f0=0; |
| if (buf0 != 0) { |
| w0 = buf0->getWidth(); |
| h0 = buf0->getHeight(); |
| s0 = buf0->getStride(); |
| f0 = buf0->format; |
| } |
| snprintf(buffer, SIZE, |
| " " |
| "format=%2d, activeBuffer=[%3ux%3u:%3u,%3u]," |
| " freezeLock=%p, queued-frames=%d\n", |
| mFormat, w0, h0, s0,f0, |
| getFreezeLock().get(), mQueuedFrames); |
| |
| result.append(buffer); |
| |
| if (mSurfaceTexture != 0) { |
| mSurfaceTexture->dump(result, " ", buffer, SIZE); |
| } |
| } |
| |
| uint32_t Layer::getEffectiveUsage(uint32_t usage) const |
| { |
| // TODO: should we do something special if mSecure is set? |
| if (mProtectedByApp) { |
| // need a hardware-protected path to external video sink |
| usage |= GraphicBuffer::USAGE_PROTECTED; |
| } |
| return usage; |
| } |
| |
| // --------------------------------------------------------------------------- |
| |
| |
| }; // namespace android |