| /* |
| * 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 <math.h> |
| #include <sys/types.h> |
| |
| #include <utils/Errors.h> |
| #include <utils/Log.h> |
| #include <utils/StopWatch.h> |
| |
| #include <binder/IPCThreadState.h> |
| #include <binder/IServiceManager.h> |
| |
| #include <ui/PixelFormat.h> |
| #include <ui/EGLDisplaySurface.h> |
| |
| #include "LayerBuffer.h" |
| #include "SurfaceFlinger.h" |
| #include "VRamHeap.h" |
| #include "DisplayHardware/DisplayHardware.h" |
| |
| |
| namespace android { |
| |
| // --------------------------------------------------------------------------- |
| |
| const uint32_t LayerBuffer::typeInfo = LayerBaseClient::typeInfo | 0x20; |
| const char* const LayerBuffer::typeID = "LayerBuffer"; |
| |
| // --------------------------------------------------------------------------- |
| |
| LayerBuffer::LayerBuffer(SurfaceFlinger* flinger, DisplayID display, |
| Client* client, int32_t i) |
| : LayerBaseClient(flinger, display, client, i), |
| mNeedsBlending(false) |
| { |
| } |
| |
| LayerBuffer::~LayerBuffer() |
| { |
| sp<SurfaceBuffer> s(getClientSurface()); |
| if (s != 0) { |
| s->disown(); |
| mClientSurface.clear(); |
| } |
| } |
| |
| sp<LayerBuffer::SurfaceBuffer> LayerBuffer::getClientSurface() const |
| { |
| Mutex::Autolock _l(mLock); |
| return mClientSurface.promote(); |
| } |
| |
| sp<LayerBaseClient::Surface> LayerBuffer::getSurface() const |
| { |
| sp<SurfaceBuffer> s; |
| Mutex::Autolock _l(mLock); |
| s = mClientSurface.promote(); |
| if (s == 0) { |
| s = new SurfaceBuffer(clientIndex(), |
| const_cast<LayerBuffer *>(this)); |
| mClientSurface = s; |
| } |
| return s; |
| } |
| |
| bool LayerBuffer::needsBlending() const { |
| return mNeedsBlending; |
| } |
| |
| void LayerBuffer::setNeedsBlending(bool blending) { |
| mNeedsBlending = blending; |
| } |
| |
| void LayerBuffer::postBuffer(ssize_t offset) |
| { |
| sp<Source> source(getSource()); |
| if (source != 0) |
| source->postBuffer(offset); |
| } |
| |
| void LayerBuffer::unregisterBuffers() |
| { |
| sp<Source> source(clearSource()); |
| if (source != 0) |
| source->unregisterBuffers(); |
| } |
| |
| uint32_t LayerBuffer::doTransaction(uint32_t flags) |
| { |
| sp<Source> source(getSource()); |
| if (source != 0) |
| source->onTransaction(flags); |
| return LayerBase::doTransaction(flags); |
| } |
| |
| void LayerBuffer::unlockPageFlip(const Transform& planeTransform, |
| Region& outDirtyRegion) |
| { |
| // this code-path must be as tight as possible, it's called each time |
| // the screen is composited. |
| sp<Source> source(getSource()); |
| if (source != 0) |
| source->onVisibilityResolved(planeTransform); |
| LayerBase::unlockPageFlip(planeTransform, outDirtyRegion); |
| } |
| |
| void LayerBuffer::onDraw(const Region& clip) const |
| { |
| sp<Source> source(getSource()); |
| if (LIKELY(source != 0)) { |
| source->onDraw(clip); |
| } else { |
| clearWithOpenGL(clip); |
| } |
| } |
| |
| bool LayerBuffer::transformed() const |
| { |
| sp<Source> source(getSource()); |
| if (LIKELY(source != 0)) |
| return source->transformed(); |
| return false; |
| } |
| |
| /** |
| * This creates a "buffer" source for this surface |
| */ |
| status_t LayerBuffer::registerBuffers(const ISurface::BufferHeap& buffers) |
| { |
| Mutex::Autolock _l(mLock); |
| if (mSource != 0) |
| return INVALID_OPERATION; |
| |
| sp<BufferSource> source = new BufferSource(*this, buffers); |
| |
| status_t result = source->getStatus(); |
| if (result == NO_ERROR) { |
| mSource = source; |
| } |
| return result; |
| } |
| |
| /** |
| * This creates an "overlay" source for this surface |
| */ |
| sp<OverlayRef> LayerBuffer::createOverlay(uint32_t w, uint32_t h, int32_t f) |
| { |
| sp<OverlayRef> result; |
| Mutex::Autolock _l(mLock); |
| if (mSource != 0) |
| return result; |
| |
| sp<OverlaySource> source = new OverlaySource(*this, &result, w, h, f); |
| if (result != 0) { |
| mSource = source; |
| } |
| return result; |
| } |
| |
| sp<LayerBuffer::Source> LayerBuffer::getSource() const { |
| Mutex::Autolock _l(mLock); |
| return mSource; |
| } |
| |
| sp<LayerBuffer::Source> LayerBuffer::clearSource() { |
| sp<Source> source; |
| Mutex::Autolock _l(mLock); |
| source = mSource; |
| mSource.clear(); |
| return source; |
| } |
| |
| // ============================================================================ |
| // LayerBuffer::SurfaceBuffer |
| // ============================================================================ |
| |
| LayerBuffer::SurfaceBuffer::SurfaceBuffer(SurfaceID id, LayerBuffer* owner) |
| : LayerBaseClient::Surface(id, owner->getIdentity()), mOwner(owner) |
| { |
| } |
| |
| LayerBuffer::SurfaceBuffer::~SurfaceBuffer() |
| { |
| unregisterBuffers(); |
| mOwner = 0; |
| } |
| |
| status_t LayerBuffer::SurfaceBuffer::onTransact( |
| uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) |
| { |
| switch (code) { |
| case REGISTER_BUFFERS: |
| case UNREGISTER_BUFFERS: |
| case CREATE_OVERLAY: |
| { |
| // codes that require permission check |
| IPCThreadState* ipc = IPCThreadState::self(); |
| const int pid = ipc->getCallingPid(); |
| const int self_pid = getpid(); |
| if (LIKELY(pid != self_pid)) { |
| // we're called from a different process, do the real check |
| if (!checkCallingPermission( |
| String16("android.permission.ACCESS_SURFACE_FLINGER"))) |
| { |
| const int uid = ipc->getCallingUid(); |
| LOGE("Permission Denial: " |
| "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); |
| return PERMISSION_DENIED; |
| } |
| } |
| } |
| } |
| return LayerBaseClient::Surface::onTransact(code, data, reply, flags); |
| } |
| |
| status_t LayerBuffer::SurfaceBuffer::registerBuffers(const ISurface::BufferHeap& buffers) |
| { |
| LayerBuffer* owner(getOwner()); |
| if (owner) |
| return owner->registerBuffers(buffers); |
| return NO_INIT; |
| } |
| |
| void LayerBuffer::SurfaceBuffer::postBuffer(ssize_t offset) |
| { |
| LayerBuffer* owner(getOwner()); |
| if (owner) |
| owner->postBuffer(offset); |
| } |
| |
| void LayerBuffer::SurfaceBuffer::unregisterBuffers() |
| { |
| LayerBuffer* owner(getOwner()); |
| if (owner) |
| owner->unregisterBuffers(); |
| } |
| |
| sp<OverlayRef> LayerBuffer::SurfaceBuffer::createOverlay( |
| uint32_t w, uint32_t h, int32_t format) { |
| sp<OverlayRef> result; |
| LayerBuffer* owner(getOwner()); |
| if (owner) |
| result = owner->createOverlay(w, h, format); |
| return result; |
| } |
| |
| void LayerBuffer::SurfaceBuffer::disown() |
| { |
| Mutex::Autolock _l(mLock); |
| mOwner = 0; |
| } |
| |
| // ============================================================================ |
| // LayerBuffer::Buffer |
| // ============================================================================ |
| |
| LayerBuffer::Buffer::Buffer(const ISurface::BufferHeap& buffers, ssize_t offset) |
| : mBufferHeap(buffers) |
| { |
| NativeBuffer& src(mNativeBuffer); |
| src.crop.l = 0; |
| src.crop.t = 0; |
| src.crop.r = buffers.w; |
| src.crop.b = buffers.h; |
| src.img.w = buffers.hor_stride ?: buffers.w; |
| src.img.h = buffers.ver_stride ?: buffers.h; |
| src.img.format = buffers.format; |
| src.img.offset = offset; |
| src.img.base = buffers.heap->base(); |
| src.img.fd = buffers.heap->heapID(); |
| } |
| |
| LayerBuffer::Buffer::~Buffer() |
| { |
| } |
| |
| // ============================================================================ |
| // LayerBuffer::Source |
| // LayerBuffer::BufferSource |
| // LayerBuffer::OverlaySource |
| // ============================================================================ |
| |
| LayerBuffer::Source::Source(LayerBuffer& layer) |
| : mLayer(layer) |
| { |
| } |
| LayerBuffer::Source::~Source() { |
| } |
| void LayerBuffer::Source::onDraw(const Region& clip) const { |
| } |
| void LayerBuffer::Source::onTransaction(uint32_t flags) { |
| } |
| void LayerBuffer::Source::onVisibilityResolved( |
| const Transform& planeTransform) { |
| } |
| void LayerBuffer::Source::postBuffer(ssize_t offset) { |
| } |
| void LayerBuffer::Source::unregisterBuffers() { |
| } |
| bool LayerBuffer::Source::transformed() const { |
| return mLayer.mTransformed; |
| } |
| |
| // --------------------------------------------------------------------------- |
| |
| LayerBuffer::BufferSource::BufferSource(LayerBuffer& layer, |
| const ISurface::BufferHeap& buffers) |
| : Source(layer), mStatus(NO_ERROR), |
| mBufferSize(0), mTextureName(-1U) |
| { |
| if (buffers.heap == NULL) { |
| // this is allowed, but in this case, it is illegal to receive |
| // postBuffer(). The surface just erases the framebuffer with |
| // fully transparent pixels. |
| mBufferHeap = buffers; |
| mLayer.setNeedsBlending(false); |
| return; |
| } |
| |
| status_t err = (buffers.heap->heapID() >= 0) ? NO_ERROR : NO_INIT; |
| if (err != NO_ERROR) { |
| LOGE("LayerBuffer::BufferSource: invalid heap (%s)", strerror(err)); |
| mStatus = err; |
| return; |
| } |
| |
| PixelFormatInfo info; |
| err = getPixelFormatInfo(buffers.format, &info); |
| if (err != NO_ERROR) { |
| LOGE("LayerBuffer::BufferSource: invalid format %d (%s)", |
| buffers.format, strerror(err)); |
| mStatus = err; |
| return; |
| } |
| |
| if (buffers.hor_stride<0 || buffers.ver_stride<0) { |
| LOGE("LayerBuffer::BufferSource: invalid parameters " |
| "(w=%d, h=%d, xs=%d, ys=%d)", |
| buffers.w, buffers.h, buffers.hor_stride, buffers.ver_stride); |
| mStatus = BAD_VALUE; |
| return; |
| } |
| |
| mBufferHeap = buffers; |
| mLayer.setNeedsBlending((info.h_alpha - info.l_alpha) > 0); |
| mBufferSize = info.getScanlineSize(buffers.hor_stride)*buffers.ver_stride; |
| mLayer.forceVisibilityTransaction(); |
| |
| } |
| |
| LayerBuffer::BufferSource::~BufferSource() |
| { |
| if (mTextureName != -1U) { |
| LayerBase::deletedTextures.add(mTextureName); |
| } |
| } |
| |
| void LayerBuffer::BufferSource::postBuffer(ssize_t offset) |
| { |
| ISurface::BufferHeap buffers; |
| { // scope for the lock |
| Mutex::Autolock _l(mLock); |
| buffers = mBufferHeap; |
| if (buffers.heap != 0) { |
| const size_t memorySize = buffers.heap->getSize(); |
| if ((size_t(offset) + mBufferSize) > memorySize) { |
| LOGE("LayerBuffer::BufferSource::postBuffer() " |
| "invalid buffer (offset=%d, size=%d, heap-size=%d", |
| int(offset), int(mBufferSize), int(memorySize)); |
| return; |
| } |
| } |
| } |
| |
| sp<Buffer> buffer; |
| if (buffers.heap != 0) { |
| buffer = new LayerBuffer::Buffer(buffers, offset); |
| if (buffer->getStatus() != NO_ERROR) |
| buffer.clear(); |
| setBuffer(buffer); |
| mLayer.invalidate(); |
| } |
| } |
| |
| void LayerBuffer::BufferSource::unregisterBuffers() |
| { |
| Mutex::Autolock _l(mLock); |
| mBufferHeap.heap.clear(); |
| mBuffer.clear(); |
| mLayer.invalidate(); |
| } |
| |
| sp<LayerBuffer::Buffer> LayerBuffer::BufferSource::getBuffer() const |
| { |
| Mutex::Autolock _l(mLock); |
| return mBuffer; |
| } |
| |
| void LayerBuffer::BufferSource::setBuffer(const sp<LayerBuffer::Buffer>& buffer) |
| { |
| Mutex::Autolock _l(mLock); |
| mBuffer = buffer; |
| } |
| |
| bool LayerBuffer::BufferSource::transformed() const |
| { |
| return mBufferHeap.transform ? true : Source::transformed(); |
| } |
| |
| void LayerBuffer::BufferSource::onDraw(const Region& clip) const |
| { |
| sp<Buffer> buffer(getBuffer()); |
| if (UNLIKELY(buffer == 0)) { |
| // nothing to do, we don't have a buffer |
| mLayer.clearWithOpenGL(clip); |
| return; |
| } |
| |
| status_t err = NO_ERROR; |
| NativeBuffer src(buffer->getBuffer()); |
| const Rect& transformedBounds = mLayer.getTransformedBounds(); |
| const int can_use_copybit = mLayer.canUseCopybit(); |
| |
| if (can_use_copybit) { |
| const int src_width = src.crop.r - src.crop.l; |
| const int src_height = src.crop.b - src.crop.t; |
| int W = transformedBounds.width(); |
| int H = transformedBounds.height(); |
| if (mLayer.getOrientation() & Transform::ROT_90) { |
| int t(W); W=H; H=t; |
| } |
| |
| /* With LayerBuffer, it is likely that we'll have to rescale the |
| * surface, because this is often used for video playback or |
| * camera-preview. Since we want these operation as fast as possible |
| * we make sure we can use the 2D H/W even if it doesn't support |
| * the requested scale factor, in which case we perform the scaling |
| * in several passes. */ |
| |
| copybit_device_t* copybit = mLayer.mFlinger->getBlitEngine(); |
| const float min = copybit->get(copybit, COPYBIT_MINIFICATION_LIMIT); |
| const float mag = copybit->get(copybit, COPYBIT_MAGNIFICATION_LIMIT); |
| |
| float xscale = 1.0f; |
| if (src_width > W*min) xscale = 1.0f / min; |
| else if (src_width*mag < W) xscale = mag; |
| |
| float yscale = 1.0f; |
| if (src_height > H*min) yscale = 1.0f / min; |
| else if (src_height*mag < H) yscale = mag; |
| |
| if (UNLIKELY(xscale!=1.0f || yscale!=1.0f)) { |
| if (UNLIKELY(mTemporaryDealer == 0)) { |
| // allocate a memory-dealer for this the first time |
| mTemporaryDealer = mLayer.mFlinger->getSurfaceHeapManager() |
| ->createHeap(ISurfaceComposer::eHardware); |
| mTempBitmap.init(mTemporaryDealer); |
| } |
| |
| const int tmp_w = floorf(src_width * xscale); |
| const int tmp_h = floorf(src_height * yscale); |
| err = mTempBitmap.setBits(tmp_w, tmp_h, 1, src.img.format); |
| |
| if (LIKELY(err == NO_ERROR)) { |
| NativeBuffer tmp; |
| mTempBitmap.getBitmapSurface(&tmp.img); |
| tmp.crop.l = 0; |
| tmp.crop.t = 0; |
| tmp.crop.r = tmp.img.w; |
| tmp.crop.b = tmp.img.h; |
| |
| region_iterator tmp_it(Region(Rect(tmp.crop.r, tmp.crop.b))); |
| copybit->set_parameter(copybit, COPYBIT_TRANSFORM, 0); |
| copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, 0xFF); |
| copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_DISABLE); |
| err = copybit->stretch(copybit, |
| &tmp.img, &src.img, &tmp.crop, &src.crop, &tmp_it); |
| src = tmp; |
| } |
| } |
| |
| const DisplayHardware& hw(mLayer.graphicPlane(0).displayHardware()); |
| copybit_image_t dst; |
| hw.getDisplaySurface(&dst); |
| const copybit_rect_t& drect |
| = reinterpret_cast<const copybit_rect_t&>(transformedBounds); |
| const State& s(mLayer.drawingState()); |
| region_iterator it(clip); |
| |
| // pick the right orientation for this buffer |
| int orientation = mLayer.getOrientation(); |
| if (UNLIKELY(mBufferHeap.transform)) { |
| Transform rot90; |
| GraphicPlane::orientationToTransfrom( |
| ISurfaceComposer::eOrientation90, 0, 0, &rot90); |
| const Transform& planeTransform(mLayer.graphicPlane(0).transform()); |
| const Layer::State& s(mLayer.drawingState()); |
| Transform tr(planeTransform * s.transform * rot90); |
| orientation = tr.getOrientation(); |
| } |
| |
| copybit->set_parameter(copybit, COPYBIT_TRANSFORM, orientation); |
| copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, s.alpha); |
| copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_ENABLE); |
| |
| err = copybit->stretch(copybit, |
| &dst, &src.img, &drect, &src.crop, &it); |
| if (err != NO_ERROR) { |
| LOGE("copybit failed (%s)", strerror(err)); |
| } |
| } |
| |
| if (!can_use_copybit || err) { |
| if (UNLIKELY(mTextureName == -1LU)) { |
| mTextureName = mLayer.createTexture(); |
| } |
| GLuint w = 0; |
| GLuint h = 0; |
| GGLSurface t; |
| t.version = sizeof(GGLSurface); |
| t.width = src.crop.r; |
| t.height = src.crop.b; |
| t.stride = src.img.w; |
| t.vstride= src.img.h; |
| t.format = src.img.format; |
| t.data = (GGLubyte*)(intptr_t(src.img.base) + src.img.offset); |
| const Region dirty(Rect(t.width, t.height)); |
| mLayer.loadTexture(dirty, mTextureName, t, w, h); |
| mLayer.drawWithOpenGL(clip, mTextureName, t, mBufferHeap.transform); |
| } |
| } |
| |
| |
| // --------------------------------------------------------------------------- |
| |
| LayerBuffer::OverlaySource::OverlaySource(LayerBuffer& layer, |
| sp<OverlayRef>* overlayRef, |
| uint32_t w, uint32_t h, int32_t format) |
| : Source(layer), mVisibilityChanged(false), |
| mOverlay(0), mOverlayHandle(0), mOverlayDevice(0) |
| { |
| overlay_control_device_t* overlay_dev = mLayer.mFlinger->getOverlayEngine(); |
| if (overlay_dev == NULL) { |
| // overlays not supported |
| return; |
| } |
| |
| mOverlayDevice = overlay_dev; |
| overlay_t* overlay = overlay_dev->createOverlay(overlay_dev, w, h, format); |
| if (overlay == NULL) { |
| // couldn't create the overlay (no memory? no more overlays?) |
| return; |
| } |
| |
| // enable dithering... |
| overlay_dev->setParameter(overlay_dev, overlay, |
| OVERLAY_DITHER, OVERLAY_ENABLE); |
| |
| mOverlay = overlay; |
| mWidth = overlay->w; |
| mHeight = overlay->h; |
| mFormat = overlay->format; |
| mWidthStride = overlay->w_stride; |
| mHeightStride = overlay->h_stride; |
| |
| mOverlayHandle = overlay->getHandleRef(overlay); |
| |
| // NOTE: here it's okay to acquire a reference to "this"m as long as |
| // the reference is not released before we leave the ctor. |
| sp<OverlayChannel> channel = new OverlayChannel(this); |
| |
| *overlayRef = new OverlayRef(mOverlayHandle, channel, |
| mWidth, mHeight, mFormat, mWidthStride, mHeightStride); |
| } |
| |
| LayerBuffer::OverlaySource::~OverlaySource() |
| { |
| if (mOverlay && mOverlayDevice) { |
| overlay_control_device_t* overlay_dev = mOverlayDevice; |
| overlay_dev->destroyOverlay(overlay_dev, mOverlay); |
| } |
| } |
| |
| void LayerBuffer::OverlaySource::onTransaction(uint32_t flags) |
| { |
| const Layer::State& front(mLayer.drawingState()); |
| const Layer::State& temp(mLayer.currentState()); |
| if (temp.sequence != front.sequence) { |
| mVisibilityChanged = true; |
| } |
| } |
| |
| void LayerBuffer::OverlaySource::onVisibilityResolved( |
| const Transform& planeTransform) |
| { |
| // this code-path must be as tight as possible, it's called each time |
| // the screen is composited. |
| if (UNLIKELY(mOverlay != 0)) { |
| if (mVisibilityChanged) { |
| mVisibilityChanged = false; |
| const Rect& bounds = mLayer.getTransformedBounds(); |
| int x = bounds.left; |
| int y = bounds.top; |
| int w = bounds.width(); |
| int h = bounds.height(); |
| |
| // we need a lock here to protect "destroy" |
| Mutex::Autolock _l(mLock); |
| if (mOverlay) { |
| overlay_control_device_t* overlay_dev = mOverlayDevice; |
| overlay_dev->setPosition(overlay_dev, mOverlay, x,y,w,h); |
| overlay_dev->setParameter(overlay_dev, mOverlay, |
| OVERLAY_TRANSFORM, mLayer.getOrientation()); |
| } |
| } |
| } |
| } |
| |
| void LayerBuffer::OverlaySource::serverDestroy() |
| { |
| mLayer.clearSource(); |
| destroyOverlay(); |
| } |
| |
| void LayerBuffer::OverlaySource::destroyOverlay() |
| { |
| // we need a lock here to protect "onVisibilityResolved" |
| Mutex::Autolock _l(mLock); |
| if (mOverlay) { |
| overlay_control_device_t* overlay_dev = mOverlayDevice; |
| overlay_dev->destroyOverlay(overlay_dev, mOverlay); |
| mOverlay = 0; |
| } |
| } |
| |
| // --------------------------------------------------------------------------- |
| }; // namespace android |
