| /* |
| * 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 ATRACE_TAG ATRACE_TAG_GRAPHICS |
| |
| #include <stdlib.h> |
| #include <stdint.h> |
| #include <sys/types.h> |
| #include <math.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 <utils/Trace.h> |
| |
| #include <ui/GraphicBuffer.h> |
| #include <ui/PixelFormat.h> |
| |
| #include <gui/Surface.h> |
| |
| #include "clz.h" |
| #include "DisplayDevice.h" |
| #include "GLExtensions.h" |
| #include "Layer.h" |
| #include "SurfaceFlinger.h" |
| #include "SurfaceTextureLayer.h" |
| |
| #include "DisplayHardware/HWComposer.h" |
| |
| #define DEBUG_RESIZE 0 |
| |
| namespace android { |
| |
| // --------------------------------------------------------------------------- |
| |
| int32_t Layer::sSequence = 1; |
| |
| Layer::Layer(SurfaceFlinger* flinger, const sp<Client>& client, |
| const String8& name, uint32_t w, uint32_t h, uint32_t flags) |
| : contentDirty(false), |
| sequence(uint32_t(android_atomic_inc(&sSequence))), |
| mFlinger(flinger), |
| mTextureName(-1U), |
| mPremultipliedAlpha(true), |
| mName("unnamed"), |
| mDebug(false), |
| mFormat(PIXEL_FORMAT_NONE), |
| mGLExtensions(GLExtensions::getInstance()), |
| mOpaqueLayer(true), |
| mTransactionFlags(0), |
| mQueuedFrames(0), |
| mCurrentTransform(0), |
| mCurrentScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE), |
| mCurrentOpacity(true), |
| mRefreshPending(false), |
| mFrameLatencyNeeded(false), |
| mFiltering(false), |
| mNeedsFiltering(false), |
| mSecure(false), |
| mProtectedByApp(false), |
| mHasSurface(false), |
| mClientRef(client) |
| { |
| mCurrentCrop.makeInvalid(); |
| glGenTextures(1, &mTextureName); |
| |
| uint32_t layerFlags = 0; |
| if (flags & ISurfaceComposerClient::eHidden) |
| layerFlags = layer_state_t::eLayerHidden; |
| |
| if (flags & ISurfaceComposerClient::eNonPremultiplied) |
| mPremultipliedAlpha = false; |
| |
| mName = name; |
| |
| mCurrentState.active.w = w; |
| mCurrentState.active.h = h; |
| mCurrentState.active.crop.makeInvalid(); |
| mCurrentState.z = 0; |
| mCurrentState.alpha = 0xFF; |
| mCurrentState.layerStack = 0; |
| mCurrentState.flags = layerFlags; |
| mCurrentState.sequence = 0; |
| mCurrentState.transform.set(0, 0); |
| mCurrentState.requested = mCurrentState.active; |
| |
| // drawing state & current state are identical |
| mDrawingState = mCurrentState; |
| } |
| |
| void Layer::onFirstRef() |
| { |
| // Creates a custom BufferQueue for SurfaceFlingerConsumer to use |
| sp<BufferQueue> bq = new SurfaceTextureLayer(mFlinger); |
| mSurfaceFlingerConsumer = new SurfaceFlingerConsumer(mTextureName, true, |
| GL_TEXTURE_EXTERNAL_OES, false, bq); |
| |
| mSurfaceFlingerConsumer->setConsumerUsageBits(getEffectiveUsage(0)); |
| mSurfaceFlingerConsumer->setFrameAvailableListener(this); |
| mSurfaceFlingerConsumer->setSynchronousMode(true); |
| mSurfaceFlingerConsumer->setName(mName); |
| |
| #ifdef TARGET_DISABLE_TRIPLE_BUFFERING |
| #warning "disabling triple buffering" |
| mSurfaceFlingerConsumer->setDefaultMaxBufferCount(2); |
| #else |
| mSurfaceFlingerConsumer->setDefaultMaxBufferCount(3); |
| #endif |
| |
| const sp<const DisplayDevice> hw(mFlinger->getDefaultDisplayDevice()); |
| updateTransformHint(hw); |
| } |
| |
| Layer::~Layer() { |
| sp<Client> c(mClientRef.promote()); |
| if (c != 0) { |
| c->detachLayer(this); |
| } |
| mFlinger->deleteTextureAsync(mTextureName); |
| } |
| |
| // --------------------------------------------------------------------------- |
| // callbacks |
| // --------------------------------------------------------------------------- |
| |
| void Layer::onLayerDisplayed(const sp<const DisplayDevice>& hw, |
| HWComposer::HWCLayerInterface* layer) { |
| if (layer) { |
| layer->onDisplayed(); |
| mSurfaceFlingerConsumer->setReleaseFence(layer->getAndResetReleaseFence()); |
| } |
| } |
| |
| void Layer::onFrameAvailable() { |
| android_atomic_inc(&mQueuedFrames); |
| mFlinger->signalLayerUpdate(); |
| } |
| |
| // called with SurfaceFlinger::mStateLock from the drawing thread after |
| // the layer has been remove from the current state list (and just before |
| // it's removed from the drawing state list) |
| void Layer::onRemoved() { |
| mSurfaceFlingerConsumer->abandon(); |
| } |
| |
| // --------------------------------------------------------------------------- |
| // set-up |
| // --------------------------------------------------------------------------- |
| |
| String8 Layer::getName() const { |
| return mName; |
| } |
| |
| 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) { |
| ALOGE("unsupported pixelformat %d", format); |
| return err; |
| } |
| |
| uint32_t const maxSurfaceDims = min( |
| mFlinger->getMaxTextureSize(), mFlinger->getMaxViewportDims()); |
| |
| // never allow a surface larger than what our underlying GL implementation |
| // can handle. |
| if ((uint32_t(w)>maxSurfaceDims) || (uint32_t(h)>maxSurfaceDims)) { |
| ALOGE("dimensions too large %u x %u", uint32_t(w), uint32_t(h)); |
| return BAD_VALUE; |
| } |
| |
| mFormat = format; |
| |
| mSecure = (flags & ISurfaceComposerClient::eSecure) ? true : false; |
| mProtectedByApp = (flags & ISurfaceComposerClient::eProtectedByApp) ? true : false; |
| mOpaqueLayer = (flags & ISurfaceComposerClient::eOpaque); |
| mCurrentOpacity = getOpacityForFormat(format); |
| |
| mSurfaceFlingerConsumer->setDefaultBufferSize(w, h); |
| mSurfaceFlingerConsumer->setDefaultBufferFormat(format); |
| mSurfaceFlingerConsumer->setConsumerUsageBits(getEffectiveUsage(0)); |
| |
| return NO_ERROR; |
| } |
| |
| sp<IBinder> Layer::getHandle() { |
| Mutex::Autolock _l(mLock); |
| |
| LOG_ALWAYS_FATAL_IF(mHasSurface, |
| "Layer::getHandle() has already been called"); |
| |
| mHasSurface = true; |
| |
| /* |
| * The layer handle is just a BBinder object passed to the client |
| * (remote process) -- we don't keep any reference on our side such that |
| * the dtor is called when the remote side let go of its reference. |
| * |
| * LayerCleaner ensures that mFlinger->onLayerDestroyed() is called for |
| * this layer when the handle is destroyed. |
| */ |
| |
| class Handle : public BBinder, public LayerCleaner { |
| wp<const Layer> mOwner; |
| public: |
| Handle(const sp<SurfaceFlinger>& flinger, const sp<Layer>& layer) |
| : LayerCleaner(flinger, layer), mOwner(layer) { |
| } |
| }; |
| |
| return new Handle(mFlinger, this); |
| } |
| |
| sp<BufferQueue> Layer::getBufferQueue() const { |
| return mSurfaceFlingerConsumer->getBufferQueue(); |
| } |
| |
| //virtual sp<IGraphicBufferProducer> getSurfaceTexture() const { |
| // sp<IGraphicBufferProducer> res; |
| // sp<const Layer> that( mOwner.promote() ); |
| // if (that != NULL) { |
| // res = that->mSurfaceFlingerConsumer->getBufferQueue(); |
| // } |
| // return res; |
| //} |
| |
| // --------------------------------------------------------------------------- |
| // h/w composer set-up |
| // --------------------------------------------------------------------------- |
| |
| Rect Layer::getContentCrop() const { |
| // this is the crop rectangle that applies to the buffer |
| // itself (as opposed to the window) |
| Rect crop; |
| if (!mCurrentCrop.isEmpty()) { |
| // if the buffer crop is defined, we use that |
| crop = mCurrentCrop; |
| } else if (mActiveBuffer != NULL) { |
| // otherwise we use the whole buffer |
| crop = mActiveBuffer->getBounds(); |
| } else { |
| // if we don't have a buffer yet, we use an empty/invalid crop |
| crop.makeInvalid(); |
| } |
| return crop; |
| } |
| |
| uint32_t Layer::getContentTransform() const { |
| return mCurrentTransform; |
| } |
| |
| Rect Layer::computeBounds() const { |
| const Layer::State& s(drawingState()); |
| Rect win(s.active.w, s.active.h); |
| if (!s.active.crop.isEmpty()) { |
| win.intersect(s.active.crop, &win); |
| } |
| return win; |
| } |
| |
| Rect Layer::computeCrop(const sp<const DisplayDevice>& hw) const { |
| /* |
| * The way we compute the crop (aka. texture coordinates when we have a |
| * Layer) produces a different output from the GL code in |
| * drawWithOpenGL() due to HWC being limited to integers. The difference |
| * can be large if getContentTransform() contains a large scale factor. |
| * See comments in drawWithOpenGL() for more details. |
| */ |
| |
| // the content crop is the area of the content that gets scaled to the |
| // layer's size. |
| Rect crop(getContentCrop()); |
| |
| // the active.crop is the area of the window that gets cropped, but not |
| // scaled in any ways. |
| const State& s(drawingState()); |
| |
| // apply the projection's clipping to the window crop in |
| // layerstack space, and convert-back to layer space. |
| // if there are no window scaling (or content scaling) involved, |
| // this operation will map to full pixels in the buffer. |
| // NOTE: should we revert to GL composition if a scaling is involved |
| // since it cannot be represented in the HWC API? |
| Rect activeCrop(s.transform.transform(s.active.crop)); |
| activeCrop.intersect(hw->getViewport(), &activeCrop); |
| activeCrop = s.transform.inverse().transform(activeCrop); |
| |
| // paranoia: make sure the window-crop is constrained in the |
| // window's bounds |
| activeCrop.intersect(Rect(s.active.w, s.active.h), &activeCrop); |
| |
| if (!activeCrop.isEmpty()) { |
| // Transform the window crop to match the buffer coordinate system, |
| // which means using the inverse of the current transform set on the |
| // SurfaceFlingerConsumer. |
| uint32_t invTransform = getContentTransform(); |
| int winWidth = s.active.w; |
| int winHeight = s.active.h; |
| if (invTransform & NATIVE_WINDOW_TRANSFORM_ROT_90) { |
| invTransform ^= NATIVE_WINDOW_TRANSFORM_FLIP_V | |
| NATIVE_WINDOW_TRANSFORM_FLIP_H; |
| winWidth = s.active.h; |
| winHeight = s.active.w; |
| } |
| const Rect winCrop = activeCrop.transform( |
| invTransform, s.active.w, s.active.h); |
| |
| // the code below essentially performs a scaled intersection |
| // of crop and winCrop |
| float xScale = float(crop.width()) / float(winWidth); |
| float yScale = float(crop.height()) / float(winHeight); |
| |
| int insetL = int(ceilf( winCrop.left * xScale)); |
| int insetT = int(ceilf( winCrop.top * yScale)); |
| int insetR = int(ceilf((winWidth - winCrop.right ) * xScale)); |
| int insetB = int(ceilf((winHeight - winCrop.bottom) * yScale)); |
| |
| crop.left += insetL; |
| crop.top += insetT; |
| crop.right -= insetR; |
| crop.bottom -= insetB; |
| } |
| return crop; |
| } |
| |
| void Layer::setGeometry( |
| const sp<const DisplayDevice>& hw, |
| HWComposer::HWCLayerInterface& layer) |
| { |
| layer.setDefaultState(); |
| |
| // enable this layer |
| layer.setSkip(false); |
| |
| if (isSecure() && !hw->isSecure()) { |
| layer.setSkip(true); |
| } |
| |
| // this gives us only the "orientation" component of the transform |
| const State& s(drawingState()); |
| if (!isOpaque() || s.alpha != 0xFF) { |
| layer.setBlending(mPremultipliedAlpha ? |
| HWC_BLENDING_PREMULT : |
| HWC_BLENDING_COVERAGE); |
| } |
| |
| // apply the layer's transform, followed by the display's global transform |
| // here we're guaranteed that the layer's transform preserves rects |
| Rect frame(s.transform.transform(computeBounds())); |
| frame.intersect(hw->getViewport(), &frame); |
| const Transform& tr(hw->getTransform()); |
| layer.setFrame(tr.transform(frame)); |
| layer.setCrop(computeCrop(hw)); |
| layer.setPlaneAlpha(s.alpha); |
| |
| /* |
| * Transformations are applied in this order: |
| * 1) buffer orientation/flip/mirror |
| * 2) state transformation (window manager) |
| * 3) layer orientation (screen orientation) |
| * (NOTE: the matrices are multiplied in reverse order) |
| */ |
| |
| const Transform bufferOrientation(mCurrentTransform); |
| const Transform transform(tr * s.transform * bufferOrientation); |
| |
| // this gives us only the "orientation" component of the transform |
| const uint32_t orientation = transform.getOrientation(); |
| if (orientation & Transform::ROT_INVALID) { |
| // we can only handle simple transformation |
| layer.setSkip(true); |
| } else { |
| layer.setTransform(orientation); |
| } |
| } |
| |
| void Layer::setPerFrameData(const sp<const DisplayDevice>& hw, |
| HWComposer::HWCLayerInterface& layer) { |
| // we have to set the visible region on every frame because |
| // we currently free it during onLayerDisplayed(), which is called |
| // after HWComposer::commit() -- every frame. |
| // Apply this display's projection's viewport to the visible region |
| // before giving it to the HWC HAL. |
| const Transform& tr = hw->getTransform(); |
| Region visible = tr.transform(visibleRegion.intersect(hw->getViewport())); |
| layer.setVisibleRegionScreen(visible); |
| |
| // NOTE: buffer can be NULL if the client never drew into this |
| // layer yet, or if we ran out of memory |
| layer.setBuffer(mActiveBuffer); |
| } |
| |
| void Layer::setAcquireFence(const sp<const DisplayDevice>& hw, |
| HWComposer::HWCLayerInterface& layer) { |
| int fenceFd = -1; |
| |
| // TODO: there is a possible optimization here: we only need to set the |
| // acquire fence the first time a new buffer is acquired on EACH display. |
| |
| if (layer.getCompositionType() == HWC_OVERLAY) { |
| sp<Fence> fence = mSurfaceFlingerConsumer->getCurrentFence(); |
| if (fence->isValid()) { |
| fenceFd = fence->dup(); |
| if (fenceFd == -1) { |
| ALOGW("failed to dup layer fence, skipping sync: %d", errno); |
| } |
| } |
| } |
| layer.setAcquireFenceFd(fenceFd); |
| } |
| |
| // --------------------------------------------------------------------------- |
| // drawing... |
| // --------------------------------------------------------------------------- |
| |
| void Layer::draw(const sp<const DisplayDevice>& hw, const Region& clip) const { |
| onDraw(hw, clip); |
| } |
| |
| void Layer::draw(const sp<const DisplayDevice>& hw) { |
| onDraw( hw, Region(hw->bounds()) ); |
| } |
| |
| void Layer::onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const |
| { |
| ATRACE_CALL(); |
| |
| 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<Layer>& layer(drawingLayers[i]); |
| if (layer.get() == static_cast<Layer const*>(this)) |
| break; |
| under.orSelf( hw->getTransform().transform(layer->visibleRegion) ); |
| } |
| // if not everything below us is covered, we plug the holes! |
| Region holes(clip.subtract(under)); |
| if (!holes.isEmpty()) { |
| clearWithOpenGL(hw, holes, 0, 0, 0, 1); |
| } |
| return; |
| } |
| |
| // Bind the current buffer to the GL texture, and wait for it to be |
| // ready for us to draw into. |
| status_t err = mSurfaceFlingerConsumer->bindTextureImage(); |
| if (err != NO_ERROR) { |
| ALOGW("onDraw: bindTextureImage failed (err=%d)", err); |
| // Go ahead and draw the buffer anyway; no matter what we do the screen |
| // is probably going to have something visibly wrong. |
| } |
| |
| bool blackOutLayer = isProtected() || (isSecure() && !hw->isSecure()); |
| |
| if (!blackOutLayer) { |
| // TODO: we could be more subtle with isFixedSize() |
| const bool useFiltering = getFiltering() || needsFiltering(hw) || isFixedSize(); |
| |
| // Query the texture matrix given our current filtering mode. |
| float textureMatrix[16]; |
| mSurfaceFlingerConsumer->setFilteringEnabled(useFiltering); |
| mSurfaceFlingerConsumer->getTransformMatrix(textureMatrix); |
| |
| // Set things up for texturing. |
| glBindTexture(GL_TEXTURE_EXTERNAL_OES, mTextureName); |
| GLenum filter = GL_NEAREST; |
| if (useFiltering) { |
| filter = GL_LINEAR; |
| } |
| glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MAG_FILTER, filter); |
| glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MIN_FILTER, filter); |
| glMatrixMode(GL_TEXTURE); |
| glLoadMatrixf(textureMatrix); |
| glMatrixMode(GL_MODELVIEW); |
| glDisable(GL_TEXTURE_2D); |
| glEnable(GL_TEXTURE_EXTERNAL_OES); |
| } else { |
| glBindTexture(GL_TEXTURE_2D, mFlinger->getProtectedTexName()); |
| glMatrixMode(GL_TEXTURE); |
| glLoadIdentity(); |
| glMatrixMode(GL_MODELVIEW); |
| glDisable(GL_TEXTURE_EXTERNAL_OES); |
| glEnable(GL_TEXTURE_2D); |
| } |
| |
| drawWithOpenGL(hw, clip); |
| |
| glDisable(GL_TEXTURE_EXTERNAL_OES); |
| glDisable(GL_TEXTURE_2D); |
| } |
| |
| |
| void Layer::clearWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip, |
| GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha) const |
| { |
| const uint32_t fbHeight = hw->getHeight(); |
| glColor4f(red,green,blue,alpha); |
| |
| glDisable(GL_TEXTURE_EXTERNAL_OES); |
| glDisable(GL_TEXTURE_2D); |
| glDisable(GL_BLEND); |
| |
| LayerMesh mesh; |
| computeGeometry(hw, &mesh); |
| |
| glVertexPointer(2, GL_FLOAT, 0, mesh.getVertices()); |
| glDrawArrays(GL_TRIANGLE_FAN, 0, mesh.getVertexCount()); |
| } |
| |
| void Layer::clearWithOpenGL( |
| const sp<const DisplayDevice>& hw, const Region& clip) const { |
| clearWithOpenGL(hw, clip, 0,0,0,0); |
| } |
| |
| void Layer::drawWithOpenGL( |
| const sp<const DisplayDevice>& hw, const Region& clip) const { |
| const uint32_t fbHeight = hw->getHeight(); |
| const State& s(drawingState()); |
| |
| GLenum src = mPremultipliedAlpha ? GL_ONE : GL_SRC_ALPHA; |
| if (CC_UNLIKELY(s.alpha < 0xFF)) { |
| const GLfloat alpha = s.alpha * (1.0f/255.0f); |
| if (mPremultipliedAlpha) { |
| glColor4f(alpha, alpha, alpha, alpha); |
| } else { |
| glColor4f(1, 1, 1, alpha); |
| } |
| glEnable(GL_BLEND); |
| glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA); |
| glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
| } else { |
| glColor4f(1, 1, 1, 1); |
| glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
| if (!isOpaque()) { |
| glEnable(GL_BLEND); |
| glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA); |
| } else { |
| glDisable(GL_BLEND); |
| } |
| } |
| |
| LayerMesh mesh; |
| computeGeometry(hw, &mesh); |
| |
| // TODO: we probably want to generate the texture coords with the mesh |
| // here we assume that we only have 4 vertices |
| |
| struct TexCoords { |
| GLfloat u; |
| GLfloat v; |
| }; |
| |
| |
| /* |
| * NOTE: the way we compute the texture coordinates here produces |
| * different results than when we take the HWC path -- in the later case |
| * the "source crop" is rounded to texel boundaries. |
| * This can produce significantly different results when the texture |
| * is scaled by a large amount. |
| * |
| * The GL code below is more logical (imho), and the difference with |
| * HWC is due to a limitation of the HWC API to integers -- a question |
| * is suspend is wether we should ignore this problem or revert to |
| * GL composition when a buffer scaling is applied (maybe with some |
| * minimal value)? Or, we could make GL behave like HWC -- but this feel |
| * like more of a hack. |
| */ |
| const Rect win(computeBounds()); |
| |
| GLfloat left = GLfloat(win.left) / GLfloat(s.active.w); |
| GLfloat top = GLfloat(win.top) / GLfloat(s.active.h); |
| GLfloat right = GLfloat(win.right) / GLfloat(s.active.w); |
| GLfloat bottom = GLfloat(win.bottom) / GLfloat(s.active.h); |
| |
| TexCoords texCoords[4]; |
| texCoords[0].u = left; |
| texCoords[0].v = top; |
| texCoords[1].u = left; |
| texCoords[1].v = bottom; |
| texCoords[2].u = right; |
| texCoords[2].v = bottom; |
| texCoords[3].u = right; |
| texCoords[3].v = top; |
| for (int i = 0; i < 4; i++) { |
| texCoords[i].v = 1.0f - texCoords[i].v; |
| } |
| |
| glEnableClientState(GL_TEXTURE_COORD_ARRAY); |
| glTexCoordPointer(2, GL_FLOAT, 0, texCoords); |
| glVertexPointer(2, GL_FLOAT, 0, mesh.getVertices()); |
| glDrawArrays(GL_TRIANGLE_FAN, 0, mesh.getVertexCount()); |
| |
| glDisableClientState(GL_TEXTURE_COORD_ARRAY); |
| glDisable(GL_BLEND); |
| } |
| |
| void Layer::setFiltering(bool filtering) { |
| mFiltering = filtering; |
| } |
| |
| bool Layer::getFiltering() const { |
| return mFiltering; |
| } |
| |
| // 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); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // local state |
| // ---------------------------------------------------------------------------- |
| |
| void Layer::computeGeometry(const sp<const DisplayDevice>& hw, LayerMesh* mesh) const |
| { |
| const Layer::State& s(drawingState()); |
| const Transform tr(hw->getTransform() * s.transform); |
| const uint32_t hw_h = hw->getHeight(); |
| Rect win(s.active.w, s.active.h); |
| if (!s.active.crop.isEmpty()) { |
| win.intersect(s.active.crop, &win); |
| } |
| if (mesh) { |
| tr.transform(mesh->mVertices[0], win.left, win.top); |
| tr.transform(mesh->mVertices[1], win.left, win.bottom); |
| tr.transform(mesh->mVertices[2], win.right, win.bottom); |
| tr.transform(mesh->mVertices[3], win.right, win.top); |
| for (size_t i=0 ; i<4 ; i++) { |
| mesh->mVertices[i][1] = hw_h - mesh->mVertices[i][1]; |
| } |
| } |
| } |
| |
| 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); |
| } |
| |
| bool Layer::isFixedSize() const { |
| return mCurrentScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE; |
| } |
| |
| bool Layer::isCropped() const { |
| return !mCurrentCrop.isEmpty(); |
| } |
| |
| bool Layer::needsFiltering(const sp<const DisplayDevice>& hw) const { |
| return mNeedsFiltering || hw->needsFiltering(); |
| } |
| |
| void Layer::setVisibleRegion(const Region& visibleRegion) { |
| // always called from main thread |
| this->visibleRegion = visibleRegion; |
| } |
| |
| void Layer::setCoveredRegion(const Region& coveredRegion) { |
| // always called from main thread |
| this->coveredRegion = coveredRegion; |
| } |
| |
| void Layer::setVisibleNonTransparentRegion(const Region& |
| setVisibleNonTransparentRegion) { |
| // always called from main thread |
| this->visibleNonTransparentRegion = setVisibleNonTransparentRegion; |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // transaction |
| // ---------------------------------------------------------------------------- |
| |
| uint32_t Layer::doTransaction(uint32_t flags) { |
| ATRACE_CALL(); |
| |
| const Layer::State& front(drawingState()); |
| const Layer::State& temp(currentState()); |
| |
| const bool sizeChanged = (temp.requested.w != front.requested.w) || |
| (temp.requested.h != front.requested.h); |
| |
| if (sizeChanged) { |
| // the size changed, we need to ask our client to request a new buffer |
| ALOGD_IF(DEBUG_RESIZE, |
| "doTransaction: geometry (layer=%p '%s'), tr=%02x, scalingMode=%d\n" |
| " current={ active ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }\n" |
| " requested={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }}\n" |
| " drawing={ active ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }\n" |
| " requested={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }}\n", |
| this, (const char*) getName(), mCurrentTransform, mCurrentScalingMode, |
| temp.active.w, temp.active.h, |
| temp.active.crop.left, |
| temp.active.crop.top, |
| temp.active.crop.right, |
| temp.active.crop.bottom, |
| temp.active.crop.getWidth(), |
| temp.active.crop.getHeight(), |
| temp.requested.w, temp.requested.h, |
| temp.requested.crop.left, |
| temp.requested.crop.top, |
| temp.requested.crop.right, |
| temp.requested.crop.bottom, |
| temp.requested.crop.getWidth(), |
| temp.requested.crop.getHeight(), |
| front.active.w, front.active.h, |
| front.active.crop.left, |
| front.active.crop.top, |
| front.active.crop.right, |
| front.active.crop.bottom, |
| front.active.crop.getWidth(), |
| front.active.crop.getHeight(), |
| front.requested.w, front.requested.h, |
| front.requested.crop.left, |
| front.requested.crop.top, |
| front.requested.crop.right, |
| front.requested.crop.bottom, |
| front.requested.crop.getWidth(), |
| front.requested.crop.getHeight()); |
| |
| // record the new size, form this point on, when the client request |
| // a buffer, it'll get the new size. |
| mSurfaceFlingerConsumer->setDefaultBufferSize( |
| temp.requested.w, temp.requested.h); |
| } |
| |
| if (!isFixedSize()) { |
| |
| const bool resizePending = (temp.requested.w != temp.active.w) || |
| (temp.requested.h != temp.active.h); |
| |
| if (resizePending) { |
| // don't let Layer::doTransaction update the drawing state |
| // if we have a pending resize, unless we are in fixed-size mode. |
| // the drawing state will be updated only once we receive a buffer |
| // with the correct size. |
| // |
| // in particular, we want to make sure the clip (which is part |
| // of the geometry state) is latched together with the size but is |
| // latched immediately when no resizing is involved. |
| |
| flags |= eDontUpdateGeometryState; |
| } |
| } |
| |
| // always set active to requested, unless we're asked not to |
| // this is used by Layer, which special cases resizes. |
| if (flags & eDontUpdateGeometryState) { |
| } else { |
| Layer::State& editTemp(currentState()); |
| editTemp.active = temp.requested; |
| } |
| |
| if (front.active != temp.active) { |
| // invalidate and recompute the visible regions if needed |
| flags |= Layer::eVisibleRegion; |
| } |
| |
| if (temp.sequence != front.sequence) { |
| // invalidate and recompute the visible regions if needed |
| flags |= eVisibleRegion; |
| this->contentDirty = true; |
| |
| // we may use linear filtering, if the matrix scales us |
| const uint8_t type = temp.transform.getType(); |
| mNeedsFiltering = (!temp.transform.preserveRects() || |
| (type >= Transform::SCALE)); |
| } |
| |
| // Commit the transaction |
| commitTransaction(); |
| return flags; |
| } |
| |
| void Layer::commitTransaction() { |
| mDrawingState = mCurrentState; |
| } |
| |
| uint32_t Layer::getTransactionFlags(uint32_t flags) { |
| return android_atomic_and(~flags, &mTransactionFlags) & flags; |
| } |
| |
| uint32_t Layer::setTransactionFlags(uint32_t flags) { |
| return android_atomic_or(flags, &mTransactionFlags); |
| } |
| |
| bool Layer::setPosition(float x, float y) { |
| if (mCurrentState.transform.tx() == x && mCurrentState.transform.ty() == y) |
| return false; |
| mCurrentState.sequence++; |
| mCurrentState.transform.set(x, y); |
| setTransactionFlags(eTransactionNeeded); |
| return true; |
| } |
| bool Layer::setLayer(uint32_t z) { |
| if (mCurrentState.z == z) |
| return false; |
| mCurrentState.sequence++; |
| mCurrentState.z = z; |
| setTransactionFlags(eTransactionNeeded); |
| return true; |
| } |
| bool Layer::setSize(uint32_t w, uint32_t h) { |
| if (mCurrentState.requested.w == w && mCurrentState.requested.h == h) |
| return false; |
| mCurrentState.requested.w = w; |
| mCurrentState.requested.h = h; |
| setTransactionFlags(eTransactionNeeded); |
| return true; |
| } |
| bool Layer::setAlpha(uint8_t alpha) { |
| if (mCurrentState.alpha == alpha) |
| return false; |
| mCurrentState.sequence++; |
| mCurrentState.alpha = alpha; |
| setTransactionFlags(eTransactionNeeded); |
| return true; |
| } |
| bool Layer::setMatrix(const layer_state_t::matrix22_t& matrix) { |
| mCurrentState.sequence++; |
| mCurrentState.transform.set( |
| matrix.dsdx, matrix.dsdy, matrix.dtdx, matrix.dtdy); |
| setTransactionFlags(eTransactionNeeded); |
| return true; |
| } |
| bool Layer::setTransparentRegionHint(const Region& transparent) { |
| mCurrentState.requestedTransparentRegion = transparent; |
| setTransactionFlags(eTransactionNeeded); |
| return true; |
| } |
| bool Layer::setFlags(uint8_t flags, uint8_t mask) { |
| const uint32_t newFlags = (mCurrentState.flags & ~mask) | (flags & mask); |
| if (mCurrentState.flags == newFlags) |
| return false; |
| mCurrentState.sequence++; |
| mCurrentState.flags = newFlags; |
| setTransactionFlags(eTransactionNeeded); |
| return true; |
| } |
| bool Layer::setCrop(const Rect& crop) { |
| if (mCurrentState.requested.crop == crop) |
| return false; |
| mCurrentState.sequence++; |
| mCurrentState.requested.crop = crop; |
| setTransactionFlags(eTransactionNeeded); |
| return true; |
| } |
| |
| bool Layer::setLayerStack(uint32_t layerStack) { |
| if (mCurrentState.layerStack == layerStack) |
| return false; |
| mCurrentState.sequence++; |
| mCurrentState.layerStack = layerStack; |
| setTransactionFlags(eTransactionNeeded); |
| return true; |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // pageflip handling... |
| // ---------------------------------------------------------------------------- |
| |
| bool Layer::onPreComposition() { |
| mRefreshPending = false; |
| return mQueuedFrames > 0; |
| } |
| |
| void Layer::onPostComposition() { |
| if (mFrameLatencyNeeded) { |
| nsecs_t desiredPresentTime = mSurfaceFlingerConsumer->getTimestamp(); |
| mFrameTracker.setDesiredPresentTime(desiredPresentTime); |
| |
| sp<Fence> frameReadyFence = mSurfaceFlingerConsumer->getCurrentFence(); |
| if (frameReadyFence->isValid()) { |
| mFrameTracker.setFrameReadyFence(frameReadyFence); |
| } else { |
| // There was no fence for this frame, so assume that it was ready |
| // to be presented at the desired present time. |
| mFrameTracker.setFrameReadyTime(desiredPresentTime); |
| } |
| |
| const HWComposer& hwc = mFlinger->getHwComposer(); |
| sp<Fence> presentFence = hwc.getDisplayFence(HWC_DISPLAY_PRIMARY); |
| if (presentFence->isValid()) { |
| mFrameTracker.setActualPresentFence(presentFence); |
| } else { |
| // The HWC doesn't support present fences, so use the refresh |
| // timestamp instead. |
| nsecs_t presentTime = hwc.getRefreshTimestamp(HWC_DISPLAY_PRIMARY); |
| mFrameTracker.setActualPresentTime(presentTime); |
| } |
| |
| mFrameTracker.advanceFrame(); |
| mFrameLatencyNeeded = false; |
| } |
| } |
| |
| bool Layer::isVisible() const { |
| const Layer::State& s(mDrawingState); |
| return !(s.flags & layer_state_t::eLayerHidden) && s.alpha |
| && (mActiveBuffer != NULL); |
| } |
| |
| Region Layer::latchBuffer(bool& recomputeVisibleRegions) |
| { |
| ATRACE_CALL(); |
| |
| Region outDirtyRegion; |
| if (mQueuedFrames > 0) { |
| |
| // if we've already called updateTexImage() without going through |
| // a composition step, we have to skip this layer at this point |
| // because we cannot call updateTeximage() without a corresponding |
| // compositionComplete() call. |
| // we'll trigger an update in onPreComposition(). |
| if (mRefreshPending) { |
| return outDirtyRegion; |
| } |
| |
| // Capture the old state of the layer for comparisons later |
| const bool oldOpacity = isOpaque(); |
| sp<GraphicBuffer> oldActiveBuffer = mActiveBuffer; |
| |
| // signal another event if we have more frames pending |
| if (android_atomic_dec(&mQueuedFrames) > 1) { |
| mFlinger->signalLayerUpdate(); |
| } |
| |
| struct Reject : public SurfaceFlingerConsumer::BufferRejecter { |
| Layer::State& front; |
| Layer::State& current; |
| bool& recomputeVisibleRegions; |
| Reject(Layer::State& front, Layer::State& current, |
| bool& recomputeVisibleRegions) |
| : front(front), current(current), |
| recomputeVisibleRegions(recomputeVisibleRegions) { |
| } |
| |
| virtual bool reject(const sp<GraphicBuffer>& buf, |
| const BufferQueue::BufferItem& item) { |
| if (buf == NULL) { |
| return false; |
| } |
| |
| uint32_t bufWidth = buf->getWidth(); |
| uint32_t bufHeight = buf->getHeight(); |
| |
| // check that we received a buffer of the right size |
| // (Take the buffer's orientation into account) |
| if (item.mTransform & Transform::ROT_90) { |
| swap(bufWidth, bufHeight); |
| } |
| |
| bool isFixedSize = item.mScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE; |
| if (front.active != front.requested) { |
| |
| if (isFixedSize || |
| (bufWidth == front.requested.w && |
| bufHeight == 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 |
| front.active = front.requested; |
| |
| // We also need to update the current state so that |
| // we don't end-up overwriting the drawing state with |
| // this stale current state during the next transaction |
| // |
| // NOTE: We don't need to hold the transaction lock here |
| // because State::active is only accessed from this thread. |
| current.active = front.active; |
| |
| // recompute visible region |
| recomputeVisibleRegions = true; |
| } |
| |
| ALOGD_IF(DEBUG_RESIZE, |
| "latchBuffer/reject: buffer (%ux%u, tr=%02x), scalingMode=%d\n" |
| " drawing={ active ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }\n" |
| " requested={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }}\n", |
| bufWidth, bufHeight, item.mTransform, item.mScalingMode, |
| front.active.w, front.active.h, |
| front.active.crop.left, |
| front.active.crop.top, |
| front.active.crop.right, |
| front.active.crop.bottom, |
| front.active.crop.getWidth(), |
| front.active.crop.getHeight(), |
| front.requested.w, front.requested.h, |
| front.requested.crop.left, |
| front.requested.crop.top, |
| front.requested.crop.right, |
| front.requested.crop.bottom, |
| front.requested.crop.getWidth(), |
| front.requested.crop.getHeight()); |
| } |
| |
| if (!isFixedSize) { |
| if (front.active.w != bufWidth || |
| front.active.h != bufHeight) { |
| // reject this buffer |
| return true; |
| } |
| } |
| |
| // if the transparent region has changed (this test is |
| // conservative, but that's fine, worst case we're doing |
| // a bit of extra work), we latch the new one and we |
| // trigger a visible-region recompute. |
| if (!front.activeTransparentRegion.isTriviallyEqual( |
| front.requestedTransparentRegion)) { |
| front.activeTransparentRegion = front.requestedTransparentRegion; |
| |
| // We also need to update the current state so that |
| // we don't end-up overwriting the drawing state with |
| // this stale current state during the next transaction |
| // |
| // NOTE: We don't need to hold the transaction lock here |
| // because State::active is only accessed from this thread. |
| current.activeTransparentRegion = front.activeTransparentRegion; |
| |
| // recompute visible region |
| recomputeVisibleRegions = true; |
| } |
| |
| return false; |
| } |
| }; |
| |
| |
| Reject r(mDrawingState, currentState(), recomputeVisibleRegions); |
| |
| if (mSurfaceFlingerConsumer->updateTexImage(&r) != NO_ERROR) { |
| // something happened! |
| recomputeVisibleRegions = true; |
| return outDirtyRegion; |
| } |
| |
| // update the active buffer |
| mActiveBuffer = mSurfaceFlingerConsumer->getCurrentBuffer(); |
| if (mActiveBuffer == NULL) { |
| // this can only happen if the very first buffer was rejected. |
| return outDirtyRegion; |
| } |
| |
| mRefreshPending = true; |
| mFrameLatencyNeeded = true; |
| if (oldActiveBuffer == NULL) { |
| // the first time we receive a buffer, we need to trigger a |
| // geometry invalidation. |
| recomputeVisibleRegions = true; |
| } |
| |
| Rect crop(mSurfaceFlingerConsumer->getCurrentCrop()); |
| const uint32_t transform(mSurfaceFlingerConsumer->getCurrentTransform()); |
| const uint32_t scalingMode(mSurfaceFlingerConsumer->getCurrentScalingMode()); |
| if ((crop != mCurrentCrop) || |
| (transform != mCurrentTransform) || |
| (scalingMode != mCurrentScalingMode)) |
| { |
| mCurrentCrop = crop; |
| mCurrentTransform = transform; |
| mCurrentScalingMode = scalingMode; |
| recomputeVisibleRegions = true; |
| } |
| |
| if (oldActiveBuffer != NULL) { |
| uint32_t bufWidth = mActiveBuffer->getWidth(); |
| uint32_t bufHeight = mActiveBuffer->getHeight(); |
| if (bufWidth != uint32_t(oldActiveBuffer->width) || |
| bufHeight != uint32_t(oldActiveBuffer->height)) { |
| recomputeVisibleRegions = true; |
| } |
| } |
| |
| mCurrentOpacity = getOpacityForFormat(mActiveBuffer->format); |
| if (oldOpacity != isOpaque()) { |
| recomputeVisibleRegions = true; |
| } |
| |
| glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| |
| // FIXME: postedRegion should be dirty & bounds |
| const Layer::State& front(drawingState()); |
| Region dirtyRegion(Rect(front.active.w, front.active.h)); |
| |
| // transform the dirty region to window-manager space |
| outDirtyRegion = (front.transform.transform(dirtyRegion)); |
| } |
| return outDirtyRegion; |
| } |
| |
| 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; |
| } |
| usage |= GraphicBuffer::USAGE_HW_COMPOSER; |
| return usage; |
| } |
| |
| void Layer::updateTransformHint(const sp<const DisplayDevice>& hw) const { |
| uint32_t orientation = 0; |
| if (!mFlinger->mDebugDisableTransformHint) { |
| // The transform hint is used to improve performance, but we can |
| // only have a single transform hint, it cannot |
| // apply to all displays. |
| const Transform& planeTransform(hw->getTransform()); |
| orientation = planeTransform.getOrientation(); |
| if (orientation & Transform::ROT_INVALID) { |
| orientation = 0; |
| } |
| } |
| mSurfaceFlingerConsumer->setTransformHint(orientation); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| // debugging |
| // ---------------------------------------------------------------------------- |
| |
| void Layer::dump(String8& result, char* buffer, size_t SIZE) const |
| { |
| const Layer::State& s(drawingState()); |
| |
| snprintf(buffer, SIZE, |
| "+ %s %p (%s)\n", |
| getTypeId(), this, getName().string()); |
| result.append(buffer); |
| |
| s.activeTransparentRegion.dump(result, "transparentRegion"); |
| visibleRegion.dump(result, "visibleRegion"); |
| sp<Client> client(mClientRef.promote()); |
| |
| snprintf(buffer, SIZE, |
| " " |
| "layerStack=%4d, z=%9d, pos=(%g,%g), size=(%4d,%4d), crop=(%4d,%4d,%4d,%4d), " |
| "isOpaque=%1d, invalidate=%1d, " |
| "alpha=0x%02x, flags=0x%08x, tr=[%.2f, %.2f][%.2f, %.2f]\n" |
| " client=%p\n", |
| s.layerStack, s.z, s.transform.tx(), s.transform.ty(), s.active.w, s.active.h, |
| s.active.crop.left, s.active.crop.top, |
| s.active.crop.right, s.active.crop.bottom, |
| isOpaque(), contentDirty, |
| s.alpha, s.flags, |
| s.transform[0][0], s.transform[0][1], |
| s.transform[1][0], s.transform[1][1], |
| client.get()); |
| result.append(buffer); |
| |
| 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=[%4ux%4u:%4u,%3X]," |
| " queued-frames=%d, mRefreshPending=%d\n", |
| mFormat, w0, h0, s0,f0, |
| mQueuedFrames, mRefreshPending); |
| |
| result.append(buffer); |
| |
| if (mSurfaceFlingerConsumer != 0) { |
| mSurfaceFlingerConsumer->dump(result, " ", buffer, SIZE); |
| } |
| } |
| |
| |
| void Layer::shortDump(String8& result, char* scratch, size_t size) const { |
| Layer::dump(result, scratch, size); |
| } |
| |
| void Layer::dumpStats(String8& result, char* buffer, size_t SIZE) const { |
| mFrameTracker.dump(result); |
| } |
| |
| void Layer::clearStats() { |
| mFrameTracker.clear(); |
| } |
| |
| // --------------------------------------------------------------------------- |
| |
| Layer::LayerCleaner::LayerCleaner(const sp<SurfaceFlinger>& flinger, |
| const sp<Layer>& layer) |
| : mFlinger(flinger), mLayer(layer) { |
| } |
| |
| Layer::LayerCleaner::~LayerCleaner() { |
| // destroy client resources |
| mFlinger->onLayerDestroyed(mLayer); |
| } |
| |
| // --------------------------------------------------------------------------- |
| |
| |
| }; // namespace android |
