| /* |
| * Copyright (C) 2012 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 |
| //#define LOG_NDEBUG 0 |
| |
| #include "SurfaceFlingerConsumer.h" |
| |
| #include <private/gui/SyncFeatures.h> |
| |
| #include <gui/BufferItem.h> |
| |
| #include <utils/Errors.h> |
| #include <utils/NativeHandle.h> |
| #include <utils/Trace.h> |
| |
| namespace android { |
| |
| // --------------------------------------------------------------------------- |
| |
| status_t SurfaceFlingerConsumer::updateTexImage(BufferRejecter* rejecter, |
| const DispSync& dispSync, bool* autoRefresh, bool* queuedBuffer, |
| uint64_t maxFrameNumber) |
| { |
| ATRACE_CALL(); |
| ALOGV("updateTexImage"); |
| Mutex::Autolock lock(mMutex); |
| |
| if (mAbandoned) { |
| ALOGE("updateTexImage: GLConsumer is abandoned!"); |
| return NO_INIT; |
| } |
| |
| // Make sure the EGL state is the same as in previous calls. |
| status_t err = checkAndUpdateEglStateLocked(); |
| if (err != NO_ERROR) { |
| return err; |
| } |
| |
| BufferItem item; |
| |
| // Acquire the next buffer. |
| // In asynchronous mode the list is guaranteed to be one buffer |
| // deep, while in synchronous mode we use the oldest buffer. |
| err = acquireBufferLocked(&item, computeExpectedPresent(dispSync), |
| maxFrameNumber); |
| if (err != NO_ERROR) { |
| if (err == BufferQueue::NO_BUFFER_AVAILABLE) { |
| err = NO_ERROR; |
| } else if (err == BufferQueue::PRESENT_LATER) { |
| // return the error, without logging |
| } else { |
| ALOGE("updateTexImage: acquire failed: %s (%d)", |
| strerror(-err), err); |
| } |
| return err; |
| } |
| |
| if (autoRefresh) { |
| *autoRefresh = item.mAutoRefresh; |
| } |
| |
| if (queuedBuffer) { |
| *queuedBuffer = item.mQueuedBuffer; |
| } |
| |
| // We call the rejecter here, in case the caller has a reason to |
| // not accept this buffer. This is used by SurfaceFlinger to |
| // reject buffers which have the wrong size |
| int slot = item.mSlot; |
| if (rejecter && rejecter->reject(mSlots[slot].mGraphicBuffer, item)) { |
| releaseBufferLocked(slot, mSlots[slot].mGraphicBuffer, EGL_NO_SYNC_KHR); |
| return BUFFER_REJECTED; |
| } |
| |
| // Release the previous buffer. |
| #ifdef USE_HWC2 |
| err = updateAndReleaseLocked(item, &mPendingRelease); |
| #else |
| err = updateAndReleaseLocked(item); |
| #endif |
| if (err != NO_ERROR) { |
| return err; |
| } |
| |
| if (!SyncFeatures::getInstance().useNativeFenceSync()) { |
| // Bind the new buffer to the GL texture. |
| // |
| // Older devices require the "implicit" synchronization provided |
| // by glEGLImageTargetTexture2DOES, which this method calls. Newer |
| // devices will either call this in Layer::onDraw, or (if it's not |
| // a GL-composited layer) not at all. |
| err = bindTextureImageLocked(); |
| } |
| |
| return err; |
| } |
| |
| status_t SurfaceFlingerConsumer::bindTextureImage() |
| { |
| Mutex::Autolock lock(mMutex); |
| |
| return bindTextureImageLocked(); |
| } |
| |
| status_t SurfaceFlingerConsumer::acquireBufferLocked(BufferItem* item, |
| nsecs_t presentWhen, uint64_t maxFrameNumber) { |
| status_t result = GLConsumer::acquireBufferLocked(item, presentWhen, |
| maxFrameNumber); |
| if (result == NO_ERROR) { |
| mTransformToDisplayInverse = item->mTransformToDisplayInverse; |
| mSurfaceDamage = item->mSurfaceDamage; |
| } |
| return result; |
| } |
| |
| bool SurfaceFlingerConsumer::getTransformToDisplayInverse() const { |
| return mTransformToDisplayInverse; |
| } |
| |
| const Region& SurfaceFlingerConsumer::getSurfaceDamage() const { |
| return mSurfaceDamage; |
| } |
| |
| sp<NativeHandle> SurfaceFlingerConsumer::getSidebandStream() const { |
| return mConsumer->getSidebandStream(); |
| } |
| |
| // We need to determine the time when a buffer acquired now will be |
| // displayed. This can be calculated: |
| // time when previous buffer's actual-present fence was signaled |
| // + current display refresh rate * HWC latency |
| // + a little extra padding |
| // |
| // Buffer producers are expected to set their desired presentation time |
| // based on choreographer time stamps, which (coming from vsync events) |
| // will be slightly later then the actual-present timing. If we get a |
| // desired-present time that is unintentionally a hair after the next |
| // vsync, we'll hold the frame when we really want to display it. We |
| // need to take the offset between actual-present and reported-vsync |
| // into account. |
| // |
| // If the system is configured without a DispSync phase offset for the app, |
| // we also want to throw in a bit of padding to avoid edge cases where we |
| // just barely miss. We want to do it here, not in every app. A major |
| // source of trouble is the app's use of the display's ideal refresh time |
| // (via Display.getRefreshRate()), which could be off of the actual refresh |
| // by a few percent, with the error multiplied by the number of frames |
| // between now and when the buffer should be displayed. |
| // |
| // If the refresh reported to the app has a phase offset, we shouldn't need |
| // to tweak anything here. |
| nsecs_t SurfaceFlingerConsumer::computeExpectedPresent(const DispSync& dispSync) |
| { |
| // The HWC doesn't currently have a way to report additional latency. |
| // Assume that whatever we submit now will appear right after the flip. |
| // For a smart panel this might be 1. This is expressed in frames, |
| // rather than time, because we expect to have a constant frame delay |
| // regardless of the refresh rate. |
| const uint32_t hwcLatency = 0; |
| |
| // Ask DispSync when the next refresh will be (CLOCK_MONOTONIC). |
| const nsecs_t nextRefresh = dispSync.computeNextRefresh(hwcLatency); |
| |
| // The DispSync time is already adjusted for the difference between |
| // vsync and reported-vsync (PRESENT_TIME_OFFSET_FROM_VSYNC_NS), so |
| // we don't need to factor that in here. Pad a little to avoid |
| // weird effects if apps might be requesting times right on the edge. |
| nsecs_t extraPadding = 0; |
| if (VSYNC_EVENT_PHASE_OFFSET_NS == 0) { |
| extraPadding = 1000000; // 1ms (6% of 60Hz) |
| } |
| |
| return nextRefresh + extraPadding; |
| } |
| |
| #ifdef USE_HWC2 |
| void SurfaceFlingerConsumer::setReleaseFence(const sp<Fence>& fence) |
| { |
| mPrevReleaseFence = fence; |
| if (!mPendingRelease.isPending) { |
| GLConsumer::setReleaseFence(fence); |
| return; |
| } |
| auto currentTexture = mPendingRelease.currentTexture; |
| if (fence->isValid() && |
| currentTexture != BufferQueue::INVALID_BUFFER_SLOT) { |
| status_t result = addReleaseFence(currentTexture, |
| mPendingRelease.graphicBuffer, fence); |
| ALOGE_IF(result != NO_ERROR, "setReleaseFence: failed to add the" |
| " fence: %s (%d)", strerror(-result), result); |
| } |
| } |
| |
| void SurfaceFlingerConsumer::releasePendingBuffer() |
| { |
| if (!mPendingRelease.isPending) { |
| ALOGV("Pending buffer already released"); |
| return; |
| } |
| ALOGV("Releasing pending buffer"); |
| Mutex::Autolock lock(mMutex); |
| status_t result = releaseBufferLocked(mPendingRelease.currentTexture, |
| mPendingRelease.graphicBuffer, mPendingRelease.display, |
| mPendingRelease.fence); |
| ALOGE_IF(result != NO_ERROR, "releasePendingBuffer failed: %s (%d)", |
| strerror(-result), result); |
| mPendingRelease = PendingRelease(); |
| } |
| #else |
| void SurfaceFlingerConsumer::setReleaseFence(const sp<Fence>& fence) { |
| mPrevReleaseFence = fence; |
| GLConsumer::setReleaseFence(fence); |
| } |
| #endif |
| |
| sp<Fence> SurfaceFlingerConsumer::getPrevReleaseFence() const { |
| return mPrevReleaseFence; |
| } |
| |
| void SurfaceFlingerConsumer::setContentsChangedListener( |
| const wp<ContentsChangedListener>& listener) { |
| setFrameAvailableListener(listener); |
| Mutex::Autolock lock(mMutex); |
| mContentsChangedListener = listener; |
| } |
| |
| void SurfaceFlingerConsumer::onSidebandStreamChanged() { |
| sp<ContentsChangedListener> listener; |
| { // scope for the lock |
| Mutex::Autolock lock(mMutex); |
| ALOG_ASSERT(mFrameAvailableListener.unsafe_get() == mContentsChangedListener.unsafe_get()); |
| listener = mContentsChangedListener.promote(); |
| } |
| |
| if (listener != NULL) { |
| listener->onSidebandStreamChanged(); |
| } |
| } |
| |
| // --------------------------------------------------------------------------- |
| }; // namespace android |
| |