330 lines
10 KiB
C++
330 lines
10 KiB
C++
/*
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* Copyright (C) 2010 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 ATRACE_TAG ATRACE_TAG_GRAPHICS
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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#include <utils/String8.h>
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#include <utils/Thread.h>
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#include <utils/Trace.h>
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#include <utils/Vector.h>
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#include <hardware/hardware.h>
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#include <hardware/hwcomposer.h>
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#include <cutils/log.h>
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#include <cutils/properties.h>
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#include <EGL/egl.h>
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#include "LayerBase.h"
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#include "HWComposer.h"
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#include "SurfaceFlinger.h"
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namespace android {
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// ---------------------------------------------------------------------------
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HWComposer::HWComposer(
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const sp<SurfaceFlinger>& flinger,
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EventHandler& handler,
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nsecs_t refreshPeriod)
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: mFlinger(flinger),
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mModule(0), mHwc(0), mList(0), mCapacity(0),
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mNumOVLayers(0), mNumFBLayers(0),
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mDpy(EGL_NO_DISPLAY), mSur(EGL_NO_SURFACE),
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mEventHandler(handler),
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mRefreshPeriod(refreshPeriod),
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mVSyncCount(0), mDebugForceFakeVSync(false)
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{
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char value[PROPERTY_VALUE_MAX];
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property_get("debug.sf.no_hw_vsync", value, "0");
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mDebugForceFakeVSync = atoi(value);
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bool needVSyncThread = false;
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int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule);
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ALOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID);
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if (err == 0) {
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err = hwc_open(mModule, &mHwc);
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ALOGE_IF(err, "%s device failed to initialize (%s)",
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HWC_HARDWARE_COMPOSER, strerror(-err));
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if (err == 0) {
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if (mHwc->registerProcs) {
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mCBContext.hwc = this;
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mCBContext.procs.invalidate = &hook_invalidate;
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mCBContext.procs.vsync = &hook_vsync;
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mHwc->registerProcs(mHwc, &mCBContext.procs);
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memset(mCBContext.procs.zero, 0, sizeof(mCBContext.procs.zero));
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}
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if (mHwc->common.version >= HWC_DEVICE_API_VERSION_0_3) {
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if (mDebugForceFakeVSync) {
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// make sure to turn h/w vsync off in "fake vsync" mode
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mHwc->methods->eventControl(mHwc, HWC_EVENT_VSYNC, 0);
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}
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} else {
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needVSyncThread = true;
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}
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}
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} else {
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needVSyncThread = true;
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}
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if (needVSyncThread) {
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// we don't have VSYNC support, we need to fake it
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mVSyncThread = new VSyncThread(*this);
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}
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}
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HWComposer::~HWComposer() {
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eventControl(EVENT_VSYNC, 0);
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free(mList);
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if (mVSyncThread != NULL) {
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mVSyncThread->requestExitAndWait();
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}
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if (mHwc) {
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hwc_close(mHwc);
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}
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}
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status_t HWComposer::initCheck() const {
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return mHwc ? NO_ERROR : NO_INIT;
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}
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void HWComposer::hook_invalidate(struct hwc_procs* procs) {
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reinterpret_cast<cb_context *>(procs)->hwc->invalidate();
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}
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void HWComposer::hook_vsync(struct hwc_procs* procs, int dpy, int64_t timestamp) {
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reinterpret_cast<cb_context *>(procs)->hwc->vsync(dpy, timestamp);
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}
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void HWComposer::invalidate() {
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mFlinger->repaintEverything();
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}
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void HWComposer::vsync(int dpy, int64_t timestamp) {
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ATRACE_INT("VSYNC", ++mVSyncCount&1);
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mEventHandler.onVSyncReceived(dpy, timestamp);
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}
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void HWComposer::eventControl(int event, int enabled) {
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status_t err = NO_ERROR;
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if (mHwc && mHwc->common.version >= HWC_DEVICE_API_VERSION_0_3) {
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if (!mDebugForceFakeVSync) {
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err = mHwc->methods->eventControl(mHwc, event, enabled);
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// error here should not happen -- not sure what we should
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// do if it does.
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ALOGE_IF(err, "eventControl(%d, %d) failed %s",
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event, enabled, strerror(-err));
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}
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}
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if (err == NO_ERROR && mVSyncThread != NULL) {
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mVSyncThread->setEnabled(enabled);
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}
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}
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void HWComposer::setFrameBuffer(EGLDisplay dpy, EGLSurface sur) {
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mDpy = (hwc_display_t)dpy;
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mSur = (hwc_surface_t)sur;
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}
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status_t HWComposer::createWorkList(size_t numLayers) {
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if (mHwc) {
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if (!mList || mCapacity < numLayers) {
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free(mList);
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size_t size = sizeof(hwc_layer_list) + numLayers*sizeof(hwc_layer_t);
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mList = (hwc_layer_list_t*)malloc(size);
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mCapacity = numLayers;
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}
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mList->flags = HWC_GEOMETRY_CHANGED;
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mList->numHwLayers = numLayers;
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}
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return NO_ERROR;
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}
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status_t HWComposer::prepare() const {
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int err = mHwc->prepare(mHwc, mList);
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if (err == NO_ERROR) {
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size_t numOVLayers = 0;
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size_t numFBLayers = 0;
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size_t count = mList->numHwLayers;
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for (size_t i=0 ; i<count ; i++) {
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hwc_layer& l(mList->hwLayers[i]);
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if (l.flags & HWC_SKIP_LAYER) {
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l.compositionType = HWC_FRAMEBUFFER;
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}
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switch (l.compositionType) {
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case HWC_OVERLAY:
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numOVLayers++;
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break;
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case HWC_FRAMEBUFFER:
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numFBLayers++;
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break;
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}
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}
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mNumOVLayers = numOVLayers;
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mNumFBLayers = numFBLayers;
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}
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return (status_t)err;
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}
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size_t HWComposer::getLayerCount(int type) const {
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switch (type) {
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case HWC_OVERLAY:
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return mNumOVLayers;
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case HWC_FRAMEBUFFER:
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return mNumFBLayers;
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}
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return 0;
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}
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status_t HWComposer::commit() const {
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int err = mHwc->set(mHwc, mDpy, mSur, mList);
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if (mList) {
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mList->flags &= ~HWC_GEOMETRY_CHANGED;
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}
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return (status_t)err;
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}
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status_t HWComposer::release() const {
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if (mHwc) {
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if (mHwc->common.version >= HWC_DEVICE_API_VERSION_0_3) {
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mHwc->methods->eventControl(mHwc, HWC_EVENT_VSYNC, 0);
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}
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int err = mHwc->set(mHwc, NULL, NULL, NULL);
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return (status_t)err;
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}
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return NO_ERROR;
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}
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status_t HWComposer::disable() {
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if (mHwc) {
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free(mList);
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mList = NULL;
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int err = mHwc->prepare(mHwc, NULL);
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return (status_t)err;
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}
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return NO_ERROR;
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}
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size_t HWComposer::getNumLayers() const {
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return mList ? mList->numHwLayers : 0;
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}
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hwc_layer_t* HWComposer::getLayers() const {
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return mList ? mList->hwLayers : 0;
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}
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void HWComposer::dump(String8& result, char* buffer, size_t SIZE,
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const Vector< sp<LayerBase> >& visibleLayersSortedByZ) const {
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if (mHwc && mList) {
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result.append("Hardware Composer state:\n");
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result.appendFormat(" mDebugForceFakeVSync=%d\n",
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mDebugForceFakeVSync);
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result.appendFormat(" numHwLayers=%u, flags=%08x\n",
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mList->numHwLayers, mList->flags);
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result.append(
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" type | handle | hints | flags | tr | blend | format | source crop | frame name \n"
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"----------+----------+----------+----------+----+-------+----------+---------------------------+--------------------------------\n");
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// " ________ | ________ | ________ | ________ | __ | _____ | ________ | [_____,_____,_____,_____] | [_____,_____,_____,_____]
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for (size_t i=0 ; i<mList->numHwLayers ; i++) {
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const hwc_layer_t& l(mList->hwLayers[i]);
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const sp<LayerBase> layer(visibleLayersSortedByZ[i]);
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int32_t format = -1;
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if (layer->getLayer() != NULL) {
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const sp<GraphicBuffer>& buffer(layer->getLayer()->getActiveBuffer());
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if (buffer != NULL) {
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format = buffer->getPixelFormat();
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}
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}
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result.appendFormat(
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" %8s | %08x | %08x | %08x | %02x | %05x | %08x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d] %s\n",
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l.compositionType ? "OVERLAY" : "FB",
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intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, format,
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l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom,
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l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom,
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layer->getName().string());
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}
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}
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if (mHwc && mHwc->common.version >= HWC_DEVICE_API_VERSION_0_1 && mHwc->dump) {
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mHwc->dump(mHwc, buffer, SIZE);
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result.append(buffer);
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}
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}
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// ---------------------------------------------------------------------------
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HWComposer::VSyncThread::VSyncThread(HWComposer& hwc)
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: mHwc(hwc), mEnabled(false),
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mNextFakeVSync(0),
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mRefreshPeriod(hwc.mRefreshPeriod)
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{
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}
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void HWComposer::VSyncThread::setEnabled(bool enabled) {
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Mutex::Autolock _l(mLock);
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mEnabled = enabled;
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mCondition.signal();
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}
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void HWComposer::VSyncThread::onFirstRef() {
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run("VSyncThread", PRIORITY_URGENT_DISPLAY + PRIORITY_MORE_FAVORABLE);
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}
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bool HWComposer::VSyncThread::threadLoop() {
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{ // scope for lock
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Mutex::Autolock _l(mLock);
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while (!mEnabled) {
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mCondition.wait(mLock);
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}
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}
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const nsecs_t period = mRefreshPeriod;
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const nsecs_t now = systemTime(CLOCK_MONOTONIC);
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nsecs_t next_vsync = mNextFakeVSync;
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nsecs_t sleep = next_vsync - now;
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if (sleep < 0) {
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// we missed, find where the next vsync should be
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sleep = (period - ((now - next_vsync) % period));
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next_vsync = now + sleep;
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}
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mNextFakeVSync = next_vsync + period;
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struct timespec spec;
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spec.tv_sec = next_vsync / 1000000000;
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spec.tv_nsec = next_vsync % 1000000000;
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int err;
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do {
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err = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &spec, NULL);
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} while (err<0 && errno == EINTR);
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if (err == 0) {
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mHwc.mEventHandler.onVSyncReceived(0, next_vsync);
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}
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return true;
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}
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// ---------------------------------------------------------------------------
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}; // namespace android
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