SurfaceFlingerConsumer.cpp revision ad678e18b66f495efa78dc3b9ab99b579945c9e2
1bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden/* 2bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden * Copyright (C) 2012 The Android Open Source Project 3bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden * 4bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden * Licensed under the Apache License, Version 2.0 (the "License"); 5bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden * you may not use this file except in compliance with the License. 6bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden * You may obtain a copy of the License at 7bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden * 8bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden * http://www.apache.org/licenses/LICENSE-2.0 9bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden * 10bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden * Unless required by applicable law or agreed to in writing, software 11bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden * distributed under the License is distributed on an "AS IS" BASIS, 12bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden * See the License for the specific language governing permissions and 14bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden * limitations under the License. 15bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden */ 16bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 17bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden#define ATRACE_TAG ATRACE_TAG_GRAPHICS 181df8c345854155cbbcb9f80de9d12d66ea70ac08Jamie Gennis//#define LOG_NDEBUG 0 19bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 20bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden#include "SurfaceFlingerConsumer.h" 21bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 22ca08833d5ea99130797e10ad68a651b50e99da74Mathias Agopian#include <private/gui/SyncFeatures.h> 23ca08833d5ea99130797e10ad68a651b50e99da74Mathias Agopian 24bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden#include <utils/Trace.h> 25bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden#include <utils/Errors.h> 26bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 27bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFaddennamespace android { 28bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 29bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden// --------------------------------------------------------------------------- 30bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 31bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFaddenstatus_t SurfaceFlingerConsumer::updateTexImage(BufferRejecter* rejecter) 32bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden{ 33bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden ATRACE_CALL(); 34bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden ALOGV("updateTexImage"); 35bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden Mutex::Autolock lock(mMutex); 36bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 37bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden if (mAbandoned) { 382adaf04fab35cf47c824d74d901b54094e01ccd3Andy McFadden ALOGE("updateTexImage: GLConsumer is abandoned!"); 39bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden return NO_INIT; 40bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden } 41bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 42bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden // Make sure the EGL state is the same as in previous calls. 43bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden status_t err = checkAndUpdateEglStateLocked(); 44bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden if (err != NO_ERROR) { 45bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden return err; 46bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden } 47bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 48bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden BufferQueue::BufferItem item; 49bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 50bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden // Acquire the next buffer. 51bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden // In asynchronous mode the list is guaranteed to be one buffer 52bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden // deep, while in synchronous mode we use the oldest buffer. 531585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden err = acquireBufferLocked(&item, computeExpectedPresent()); 54bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden if (err != NO_ERROR) { 55bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden if (err == BufferQueue::NO_BUFFER_AVAILABLE) { 56bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden // This variant of updateTexImage does not guarantee that the 57bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden // texture is bound, so no need to call glBindTexture. 58bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden err = NO_ERROR; 591585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden } else if (err == BufferQueue::PRESENT_LATER) { 601585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // return the error, without logging 61bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden } else { 62bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden ALOGE("updateTexImage: acquire failed: %s (%d)", 63bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden strerror(-err), err); 64bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden } 65bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden return err; 66bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden } 67bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 68bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 69bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden // We call the rejecter here, in case the caller has a reason to 70bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden // not accept this buffer. This is used by SurfaceFlinger to 71bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden // reject buffers which have the wrong size 72bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden int buf = item.mBuf; 73bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden if (rejecter && rejecter->reject(mSlots[buf].mGraphicBuffer, item)) { 7498d3d6ec1250248574f2e8d72e5c934fecbcd734Lajos Molnar releaseBufferLocked(buf, mSlots[buf].mGraphicBuffer, EGL_NO_SYNC_KHR); 75bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden return NO_ERROR; 76bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden } 77bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 78bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden // Release the previous buffer. 79ad678e18b66f495efa78dc3b9ab99b579945c9e2Mathias Agopian err = updateAndReleaseLocked(item); 80bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden if (err != NO_ERROR) { 81bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden return err; 82bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden } 83bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 84ca08833d5ea99130797e10ad68a651b50e99da74Mathias Agopian if (!SyncFeatures::getInstance().useNativeFenceSync()) { 8597eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden // Bind the new buffer to the GL texture. 8697eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden // 8797eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden // Older devices require the "implicit" synchronization provided 8897eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden // by glEGLImageTargetTexture2DOES, which this method calls. Newer 8997eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden // devices will either call this in Layer::onDraw, or (if it's not 9097eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden // a GL-composited layer) not at all. 9197eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden err = bindTextureImageLocked(); 9297eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden } 9397eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden 9497eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden return err; 9597eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden} 9697eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden 9797eba8904c2f221c42a9473407223a4c3a213f75Andy McFaddenstatus_t SurfaceFlingerConsumer::bindTextureImage() 9897eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden{ 9997eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden Mutex::Autolock lock(mMutex); 10097eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden 10197eba8904c2f221c42a9473407223a4c3a213f75Andy McFadden return bindTextureImageLocked(); 102bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden} 103bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 1041585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden// We need to determine the time when a buffer acquired now will be 1051585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden// displayed. This can be calculated: 1061585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden// time when previous buffer's actual-present fence was signaled 1071585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden// + current display refresh rate * HWC latency 1081585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden// + a little extra padding 1091585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden// 1101585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden// Buffer producers are expected to set their desired presentation time 1111585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden// based on choreographer time stamps, which (coming from vsync events) 1121585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden// will be slightly later then the actual-present timing. If we get a 1131585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden// desired-present time that is unintentionally a hair after the next 1141585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden// vsync, we'll hold the frame when we really want to display it. We 1151585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden// want to use an expected-presentation time that is slightly late to 1161585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden// avoid this sort of edge case. 1171585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFaddennsecs_t SurfaceFlingerConsumer::computeExpectedPresent() 1181585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden{ 1191585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // Don't yet have an easy way to get actual buffer flip time for 1201585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // the specific display, so use the current time. This is typically 1211585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // 1.3ms past the vsync event time. 1221585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden const nsecs_t prevVsync = systemTime(CLOCK_MONOTONIC); 1231585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden 1241585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // Given a SurfaceFlinger reference, and information about what display 1251585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // we're destined for, we could query the HWC for the refresh rate. This 1261585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // could change over time, e.g. we could switch to 24fps for a movie. 1271585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // For now, assume 60fps. 1281585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden //const nsecs_t vsyncPeriod = 1291585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // getHwComposer().getRefreshPeriod(HWC_DISPLAY_PRIMARY); 1301585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden const nsecs_t vsyncPeriod = 16700000; 1311585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden 1321585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // The HWC doesn't currently have a way to report additional latency. 1331585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // Assume that whatever we submit now will appear on the next flip, 1341585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // i.e. 1 frame of latency w.r.t. the previous flip. 1351585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden const uint32_t hwcLatency = 1; 1361585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden 1371585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // A little extra padding to compensate for slack between actual vsync 1381585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // time and vsync event receipt. Currently not needed since we're 1391585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // using "now" instead of a vsync time. 1401585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden const nsecs_t extraPadding = 0; 1411585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden 1421585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden // Total it up. 1431585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden return prevVsync + hwcLatency * vsyncPeriod + extraPadding; 1441585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden} 1451585c4d9fbbba3ba70ae625923b85cd02cb8a0fdAndy McFadden 146bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden// --------------------------------------------------------------------------- 147bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden}; // namespace android 148bf974abe92f7495529916fe0f483f3b56e7c30e3Andy McFadden 149