7530114619
* commit '5588d9000cd1ef217185c9001d6b5ecd84db9741': Enable clang for libui/libgui/surfaceflinger
176 lines
5.8 KiB
C++
176 lines
5.8 KiB
C++
/*
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**
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** Copyright 2012 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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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <cutils/log.h>
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#include <utils/String8.h>
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#include <ui/Rect.h>
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#include <EGL/egl.h>
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#include <hardware/hardware.h>
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#include <gui/Surface.h>
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#include <gui/GraphicBufferAlloc.h>
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#include <ui/GraphicBuffer.h>
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#include "FramebufferSurface.h"
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#include "HWComposer.h"
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#ifndef NUM_FRAMEBUFFER_SURFACE_BUFFERS
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#define NUM_FRAMEBUFFER_SURFACE_BUFFERS (2)
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#endif
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// ----------------------------------------------------------------------------
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namespace android {
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// ----------------------------------------------------------------------------
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/*
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* This implements the (main) framebuffer management. This class is used
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* mostly by SurfaceFlinger, but also by command line GL application.
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*
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*/
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FramebufferSurface::FramebufferSurface(HWComposer& hwc, int disp,
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const sp<IGraphicBufferConsumer>& consumer) :
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ConsumerBase(consumer),
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mDisplayType(disp),
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mCurrentBufferSlot(-1),
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mCurrentBuffer(0),
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mHwc(hwc)
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{
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mName = "FramebufferSurface";
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mConsumer->setConsumerName(mName);
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mConsumer->setConsumerUsageBits(GRALLOC_USAGE_HW_FB |
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GRALLOC_USAGE_HW_RENDER |
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GRALLOC_USAGE_HW_COMPOSER);
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mConsumer->setDefaultBufferFormat(mHwc.getFormat(disp));
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mConsumer->setDefaultBufferSize(mHwc.getWidth(disp), mHwc.getHeight(disp));
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mConsumer->setDefaultMaxBufferCount(NUM_FRAMEBUFFER_SURFACE_BUFFERS);
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}
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status_t FramebufferSurface::beginFrame(bool /*mustRecompose*/) {
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return NO_ERROR;
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}
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status_t FramebufferSurface::prepareFrame(CompositionType /*compositionType*/) {
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return NO_ERROR;
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}
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status_t FramebufferSurface::advanceFrame() {
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// Once we remove FB HAL support, we can call nextBuffer() from here
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// instead of using onFrameAvailable(). No real benefit, except it'll be
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// more like VirtualDisplaySurface.
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return NO_ERROR;
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}
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status_t FramebufferSurface::nextBuffer(sp<GraphicBuffer>& outBuffer, sp<Fence>& outFence) {
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Mutex::Autolock lock(mMutex);
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BufferQueue::BufferItem item;
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status_t err = acquireBufferLocked(&item, 0);
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if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
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outBuffer = mCurrentBuffer;
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return NO_ERROR;
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} else if (err != NO_ERROR) {
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ALOGE("error acquiring buffer: %s (%d)", strerror(-err), err);
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return err;
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}
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// If the BufferQueue has freed and reallocated a buffer in mCurrentSlot
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// then we may have acquired the slot we already own. If we had released
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// our current buffer before we call acquireBuffer then that release call
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// would have returned STALE_BUFFER_SLOT, and we would have called
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// freeBufferLocked on that slot. Because the buffer slot has already
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// been overwritten with the new buffer all we have to do is skip the
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// releaseBuffer call and we should be in the same state we'd be in if we
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// had released the old buffer first.
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if (mCurrentBufferSlot != BufferQueue::INVALID_BUFFER_SLOT &&
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item.mBuf != mCurrentBufferSlot) {
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// Release the previous buffer.
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err = releaseBufferLocked(mCurrentBufferSlot, mCurrentBuffer,
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EGL_NO_DISPLAY, EGL_NO_SYNC_KHR);
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if (err < NO_ERROR) {
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ALOGE("error releasing buffer: %s (%d)", strerror(-err), err);
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return err;
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}
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}
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mCurrentBufferSlot = item.mBuf;
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mCurrentBuffer = mSlots[mCurrentBufferSlot].mGraphicBuffer;
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outFence = item.mFence;
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outBuffer = mCurrentBuffer;
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return NO_ERROR;
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}
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// Overrides ConsumerBase::onFrameAvailable(), does not call base class impl.
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void FramebufferSurface::onFrameAvailable(const BufferItem& /* item */) {
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sp<GraphicBuffer> buf;
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sp<Fence> acquireFence;
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status_t err = nextBuffer(buf, acquireFence);
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if (err != NO_ERROR) {
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ALOGE("error latching nnext FramebufferSurface buffer: %s (%d)",
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strerror(-err), err);
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return;
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}
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err = mHwc.fbPost(mDisplayType, acquireFence, buf);
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if (err != NO_ERROR) {
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ALOGE("error posting framebuffer: %d", err);
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}
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}
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void FramebufferSurface::freeBufferLocked(int slotIndex) {
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ConsumerBase::freeBufferLocked(slotIndex);
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if (slotIndex == mCurrentBufferSlot) {
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mCurrentBufferSlot = BufferQueue::INVALID_BUFFER_SLOT;
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}
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}
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void FramebufferSurface::onFrameCommitted() {
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sp<Fence> fence = mHwc.getAndResetReleaseFence(mDisplayType);
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if (fence->isValid() &&
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mCurrentBufferSlot != BufferQueue::INVALID_BUFFER_SLOT) {
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status_t err = addReleaseFence(mCurrentBufferSlot,
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mCurrentBuffer, fence);
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ALOGE_IF(err, "setReleaseFenceFd: failed to add the fence: %s (%d)",
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strerror(-err), err);
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}
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}
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status_t FramebufferSurface::compositionComplete()
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{
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return mHwc.fbCompositionComplete();
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}
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void FramebufferSurface::dumpAsString(String8& result) const {
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ConsumerBase::dump(result);
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}
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void FramebufferSurface::dumpLocked(String8& result, const char* prefix) const
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{
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mHwc.fbDump(result);
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ConsumerBase::dumpLocked(result, prefix);
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}
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// ----------------------------------------------------------------------------
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}; // namespace android
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// ----------------------------------------------------------------------------
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