647 lines
19 KiB
C++
647 lines
19 KiB
C++
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "SurfaceFlinger"
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#include <stdlib.h>
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#include <stdint.h>
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#include <math.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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#include <utils/Log.h>
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#include <utils/StopWatch.h>
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#include <utils/IPCThreadState.h>
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#include <utils/IServiceManager.h>
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#include <ui/PixelFormat.h>
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#include <ui/EGLDisplaySurface.h>
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#include "LayerBuffer.h"
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#include "SurfaceFlinger.h"
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#include "VRamHeap.h"
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#include "DisplayHardware/DisplayHardware.h"
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namespace android {
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// ---------------------------------------------------------------------------
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const uint32_t LayerBuffer::typeInfo = LayerBaseClient::typeInfo | 0x20;
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const char* const LayerBuffer::typeID = "LayerBuffer";
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// ---------------------------------------------------------------------------
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LayerBuffer::LayerBuffer(SurfaceFlinger* flinger, DisplayID display,
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Client* client, int32_t i)
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: LayerBaseClient(flinger, display, client, i),
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mNeedsBlending(false)
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{
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}
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LayerBuffer::~LayerBuffer()
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{
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sp<SurfaceBuffer> s(getClientSurface());
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if (s != 0) {
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s->disown();
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mClientSurface.clear();
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}
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}
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sp<LayerBuffer::SurfaceBuffer> LayerBuffer::getClientSurface() const
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{
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Mutex::Autolock _l(mLock);
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return mClientSurface.promote();
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}
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sp<LayerBaseClient::Surface> LayerBuffer::getSurface() const
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{
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sp<SurfaceBuffer> s;
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Mutex::Autolock _l(mLock);
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s = mClientSurface.promote();
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if (s == 0) {
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s = new SurfaceBuffer(clientIndex(),
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const_cast<LayerBuffer *>(this));
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mClientSurface = s;
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}
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return s;
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}
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bool LayerBuffer::needsBlending() const {
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return mNeedsBlending;
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}
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void LayerBuffer::setNeedsBlending(bool blending) {
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mNeedsBlending = blending;
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}
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void LayerBuffer::postBuffer(ssize_t offset)
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{
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sp<Source> source(getSource());
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if (source != 0)
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source->postBuffer(offset);
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}
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void LayerBuffer::unregisterBuffers()
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{
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sp<Source> source(clearSource());
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if (source != 0)
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source->unregisterBuffers();
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}
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Transform LayerBuffer::getDrawingStateTransform() const
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{
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Transform tr(LayerBaseClient::getDrawingStateTransform());
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sp<Source> source(getSource());
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if (source != 0)
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source->updateTransform(&tr);
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return tr;
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}
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uint32_t LayerBuffer::doTransaction(uint32_t flags)
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{
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sp<Source> source(getSource());
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if (source != 0)
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source->onTransaction(flags);
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return LayerBase::doTransaction(flags);
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}
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void LayerBuffer::unlockPageFlip(const Transform& planeTransform,
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Region& outDirtyRegion)
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{
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// this code-path must be as tight as possible, it's called each time
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// the screen is composited.
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sp<Source> source(getSource());
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if (source != 0)
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source->onVisibilityResolved(planeTransform);
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LayerBase::unlockPageFlip(planeTransform, outDirtyRegion);
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}
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void LayerBuffer::onDraw(const Region& clip) const
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{
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sp<Source> source(getSource());
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if (LIKELY(source != 0)) {
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source->onDraw(clip);
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} else {
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clearWithOpenGL(clip);
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}
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}
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/**
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* This creates a "buffer" source for this surface
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*/
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status_t LayerBuffer::registerBuffers(const ISurface::BufferHeap& buffers)
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{
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Mutex::Autolock _l(mLock);
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if (mSource != 0)
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return INVALID_OPERATION;
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sp<BufferSource> source = new BufferSource(*this, buffers);
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status_t result = source->getStatus();
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if (result == NO_ERROR) {
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mSource = source;
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}
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return result;
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}
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/**
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* This creates an "overlay" source for this surface
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*/
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sp<OverlayRef> LayerBuffer::createOverlay(uint32_t w, uint32_t h, int32_t f)
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{
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sp<OverlayRef> result;
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Mutex::Autolock _l(mLock);
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if (mSource != 0)
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return result;
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sp<OverlaySource> source = new OverlaySource(*this, &result, w, h, f);
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if (result != 0) {
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mSource = source;
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}
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return result;
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}
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sp<LayerBuffer::Source> LayerBuffer::getSource() const {
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Mutex::Autolock _l(mLock);
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return mSource;
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}
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sp<LayerBuffer::Source> LayerBuffer::clearSource() {
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sp<Source> source;
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Mutex::Autolock _l(mLock);
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source = mSource;
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mSource.clear();
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return source;
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}
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// ============================================================================
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// LayerBuffer::SurfaceBuffer
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// ============================================================================
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LayerBuffer::SurfaceBuffer::SurfaceBuffer(SurfaceID id, LayerBuffer* owner)
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: LayerBaseClient::Surface(id, owner->getIdentity()), mOwner(owner)
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{
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}
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LayerBuffer::SurfaceBuffer::~SurfaceBuffer()
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{
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unregisterBuffers();
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mOwner = 0;
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}
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status_t LayerBuffer::SurfaceBuffer::onTransact(
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uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
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{
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switch (code) {
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case REGISTER_BUFFERS:
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case UNREGISTER_BUFFERS:
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case CREATE_OVERLAY:
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{
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// codes that require permission check
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IPCThreadState* ipc = IPCThreadState::self();
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const int pid = ipc->getCallingPid();
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const int self_pid = getpid();
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if (LIKELY(pid != self_pid)) {
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// we're called from a different process, do the real check
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if (!checkCallingPermission(
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String16("android.permission.ACCESS_SURFACE_FLINGER")))
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{
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const int uid = ipc->getCallingUid();
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LOGE("Permission Denial: "
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"can't access SurfaceFlinger pid=%d, uid=%d", pid, uid);
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return PERMISSION_DENIED;
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}
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}
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}
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}
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return LayerBaseClient::Surface::onTransact(code, data, reply, flags);
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}
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status_t LayerBuffer::SurfaceBuffer::registerBuffers(const ISurface::BufferHeap& buffers)
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{
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LayerBuffer* owner(getOwner());
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if (owner)
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return owner->registerBuffers(buffers);
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return NO_INIT;
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}
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void LayerBuffer::SurfaceBuffer::postBuffer(ssize_t offset)
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{
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LayerBuffer* owner(getOwner());
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if (owner)
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owner->postBuffer(offset);
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}
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void LayerBuffer::SurfaceBuffer::unregisterBuffers()
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{
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LayerBuffer* owner(getOwner());
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if (owner)
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owner->unregisterBuffers();
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}
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sp<OverlayRef> LayerBuffer::SurfaceBuffer::createOverlay(
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uint32_t w, uint32_t h, int32_t format) {
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sp<OverlayRef> result;
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LayerBuffer* owner(getOwner());
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if (owner)
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result = owner->createOverlay(w, h, format);
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return result;
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}
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void LayerBuffer::SurfaceBuffer::disown()
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{
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Mutex::Autolock _l(mLock);
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mOwner = 0;
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}
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// ============================================================================
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// LayerBuffer::Buffer
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// ============================================================================
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LayerBuffer::Buffer::Buffer(const ISurface::BufferHeap& buffers, ssize_t offset)
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: mBufferHeap(buffers)
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{
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NativeBuffer& src(mNativeBuffer);
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src.crop.l = 0;
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src.crop.t = 0;
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src.crop.r = buffers.w;
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src.crop.b = buffers.h;
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src.img.w = buffers.hor_stride ?: buffers.w;
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src.img.h = buffers.ver_stride ?: buffers.h;
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src.img.format = buffers.format;
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src.img.offset = offset;
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src.img.base = buffers.heap->base();
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src.img.fd = buffers.heap->heapID();
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}
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LayerBuffer::Buffer::~Buffer()
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{
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}
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// ============================================================================
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// LayerBuffer::Source
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// LayerBuffer::BufferSource
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// LayerBuffer::OverlaySource
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// ============================================================================
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LayerBuffer::Source::Source(LayerBuffer& layer)
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: mLayer(layer)
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{
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}
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LayerBuffer::Source::~Source() {
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}
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void LayerBuffer::Source::onDraw(const Region& clip) const {
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}
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void LayerBuffer::Source::onTransaction(uint32_t flags) {
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}
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void LayerBuffer::Source::onVisibilityResolved(
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const Transform& planeTransform) {
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}
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void LayerBuffer::Source::postBuffer(ssize_t offset) {
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}
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void LayerBuffer::Source::unregisterBuffers() {
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}
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void LayerBuffer::Source::updateTransform(Transform* tr) const {
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}
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// ---------------------------------------------------------------------------
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LayerBuffer::BufferSource::BufferSource(LayerBuffer& layer,
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const ISurface::BufferHeap& buffers)
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: Source(layer), mStatus(NO_ERROR),
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mBufferSize(0), mTextureName(-1U)
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{
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if (buffers.heap == NULL) {
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// this is allowed, but in this case, it is illegal to receive
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// postBuffer(). The surface just erases the framebuffer with
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// fully transparent pixels.
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mBufferHeap = buffers;
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mLayer.setNeedsBlending(false);
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return;
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}
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status_t err = (buffers.heap->heapID() >= 0) ? NO_ERROR : NO_INIT;
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if (err != NO_ERROR) {
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LOGE("LayerBuffer::BufferSource: invalid heap (%s)", strerror(err));
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mStatus = err;
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return;
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}
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PixelFormatInfo info;
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err = getPixelFormatInfo(buffers.format, &info);
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if (err != NO_ERROR) {
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LOGE("LayerBuffer::BufferSource: invalid format %d (%s)",
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buffers.format, strerror(err));
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mStatus = err;
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return;
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}
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if (buffers.hor_stride<0 || buffers.ver_stride<0) {
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LOGE("LayerBuffer::BufferSource: invalid parameters "
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"(w=%d, h=%d, xs=%d, ys=%d)",
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buffers.w, buffers.h, buffers.hor_stride, buffers.ver_stride);
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mStatus = BAD_VALUE;
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return;
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}
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mBufferHeap = buffers;
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mLayer.setNeedsBlending((info.h_alpha - info.l_alpha) > 0);
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mBufferSize = info.getScanlineSize(buffers.hor_stride)*buffers.ver_stride;
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mLayer.forceVisibilityTransaction();
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}
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LayerBuffer::BufferSource::~BufferSource()
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{
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if (mTextureName != -1U) {
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LayerBase::deletedTextures.add(mTextureName);
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}
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}
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void LayerBuffer::BufferSource::postBuffer(ssize_t offset)
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{
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ISurface::BufferHeap buffers;
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{ // scope for the lock
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Mutex::Autolock _l(mLock);
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buffers = mBufferHeap;
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if (buffers.heap != 0) {
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const size_t memorySize = buffers.heap->getSize();
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if ((size_t(offset) + mBufferSize) > memorySize) {
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LOGE("LayerBuffer::BufferSource::postBuffer() "
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"invalid buffer (offset=%d, size=%d, heap-size=%d",
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int(offset), int(mBufferSize), int(memorySize));
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return;
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}
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}
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}
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sp<Buffer> buffer;
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if (buffers.heap != 0) {
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buffer = new LayerBuffer::Buffer(buffers, offset);
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if (buffer->getStatus() != NO_ERROR)
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buffer.clear();
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setBuffer(buffer);
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mLayer.invalidate();
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}
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}
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void LayerBuffer::BufferSource::unregisterBuffers()
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{
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Mutex::Autolock _l(mLock);
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mBufferHeap.heap.clear();
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mBuffer.clear();
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mLayer.invalidate();
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}
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sp<LayerBuffer::Buffer> LayerBuffer::BufferSource::getBuffer() const
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{
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Mutex::Autolock _l(mLock);
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return mBuffer;
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}
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void LayerBuffer::BufferSource::setBuffer(const sp<LayerBuffer::Buffer>& buffer)
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{
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Mutex::Autolock _l(mLock);
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mBuffer = buffer;
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}
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void LayerBuffer::BufferSource::updateTransform(Transform* tr) const
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{
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uint32_t bufTransform = mBufferHeap.transform;
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// TODO: handle all transforms
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if (bufTransform == ISurface::BufferHeap::ROT_90) {
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Transform rot90;
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rot90.set(0, -1, 1, 0);
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*tr = (*tr) * rot90;
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}
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}
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void LayerBuffer::BufferSource::onDraw(const Region& clip) const
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{
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sp<Buffer> buffer(getBuffer());
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if (UNLIKELY(buffer == 0)) {
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// nothing to do, we don't have a buffer
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mLayer.clearWithOpenGL(clip);
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return;
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}
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status_t err = NO_ERROR;
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NativeBuffer src(buffer->getBuffer());
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const Rect& transformedBounds = mLayer.getTransformedBounds();
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const int can_use_copybit = mLayer.canUseCopybit();
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if (can_use_copybit) {
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const int src_width = src.crop.r - src.crop.l;
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const int src_height = src.crop.b - src.crop.t;
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int W = transformedBounds.width();
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int H = transformedBounds.height();
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if (mLayer.getOrientation() & Transform::ROT_90) {
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int t(W); W=H; H=t;
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}
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/* With LayerBuffer, it is likely that we'll have to rescale the
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* surface, because this is often used for video playback or
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* camera-preview. Since we want these operation as fast as possible
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* we make sure we can use the 2D H/W even if it doesn't support
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* the requested scale factor, in which case we perform the scaling
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* in several passes. */
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copybit_device_t* copybit = mLayer.mFlinger->getBlitEngine();
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const float min = copybit->get(copybit, COPYBIT_MINIFICATION_LIMIT);
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const float mag = copybit->get(copybit, COPYBIT_MAGNIFICATION_LIMIT);
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float xscale = 1.0f;
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if (src_width > W*min) xscale = 1.0f / min;
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else if (src_width*mag < W) xscale = mag;
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float yscale = 1.0f;
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if (src_height > H*min) yscale = 1.0f / min;
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else if (src_height*mag < H) yscale = mag;
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if (UNLIKELY(xscale!=1.0f || yscale!=1.0f)) {
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if (UNLIKELY(mTemporaryDealer == 0)) {
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// allocate a memory-dealer for this the first time
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mTemporaryDealer = mLayer.mFlinger->getSurfaceHeapManager()
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->createHeap(ISurfaceComposer::eHardware);
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mTempBitmap.init(mTemporaryDealer);
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}
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const int tmp_w = floorf(src_width * xscale);
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const int tmp_h = floorf(src_height * yscale);
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err = mTempBitmap.setBits(tmp_w, tmp_h, 1, src.img.format);
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if (LIKELY(err == NO_ERROR)) {
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NativeBuffer tmp;
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mTempBitmap.getBitmapSurface(&tmp.img);
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tmp.crop.l = 0;
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tmp.crop.t = 0;
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tmp.crop.r = tmp.img.w;
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tmp.crop.b = tmp.img.h;
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region_iterator tmp_it(Region(Rect(tmp.crop.r, tmp.crop.b)));
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copybit->set_parameter(copybit, COPYBIT_TRANSFORM, 0);
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copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, 0xFF);
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copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_DISABLE);
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err = copybit->stretch(copybit,
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&tmp.img, &src.img, &tmp.crop, &src.crop, &tmp_it);
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src = tmp;
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}
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}
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const DisplayHardware& hw(mLayer.graphicPlane(0).displayHardware());
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copybit_image_t dst;
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hw.getDisplaySurface(&dst);
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const copybit_rect_t& drect
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= reinterpret_cast<const copybit_rect_t&>(transformedBounds);
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const State& s(mLayer.drawingState());
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region_iterator it(clip);
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copybit->set_parameter(copybit, COPYBIT_TRANSFORM, mLayer.getOrientation());
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copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, s.alpha);
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copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_ENABLE);
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err = copybit->stretch(copybit,
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&dst, &src.img, &drect, &src.crop, &it);
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if (err != NO_ERROR) {
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LOGE("copybit failed (%s)", strerror(err));
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}
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}
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if (!can_use_copybit || err) {
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if (UNLIKELY(mTextureName == -1LU)) {
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mTextureName = mLayer.createTexture();
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}
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GLuint w = 0;
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GLuint h = 0;
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GGLSurface t;
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t.version = sizeof(GGLSurface);
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t.width = src.crop.r;
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t.height = src.crop.b;
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t.stride = src.img.w;
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t.vstride= src.img.h;
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t.format = src.img.format;
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|
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);
|
|
}
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
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
|