replicant-frameworks_native/services/surfaceflinger/DisplayHardware/HWComposer.cpp
Mathias Agopian 03e407270c set vsync power hint
Change-Id: I28c2faf9ff584df3e74392712971cbcf75eb9e98
2012-04-26 19:52:22 -07:00

330 lines
10 KiB
C++

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