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replicant-frameworks_native/services/surfaceflinger/DisplayHardware/HWComposer.cpp
Jesse Hall e25d005d91 Always reset layer acquireFenceFd after commit 
If SurfaceFlinger needs to refresh the screen but the dirty region is
empty, it won't set the layer acquire fences, and stale file
descriptors will be passed to HWC commit(). Now we make sure to clear
the stale file descriptors for each layer right after commit().

Bug: 7078301
Change-Id: I6953ff91fc5488f105b30b07306f9c45a4c3f780
2012-09-05 13:03:10 -07:00

733 lines
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/*
* 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
// Uncomment this to remove support for HWC_DEVICE_API_VERSION_0_3 and older
#define HWC_REMOVE_DEPRECATED_VERSIONS 1
#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 <ui/GraphicBuffer.h>
#include <hardware/hardware.h>
#include <hardware/hwcomposer.h>
#include <cutils/log.h>
#include <cutils/properties.h>
#include "Layer.h" // needed only for debugging
#include "LayerBase.h"
#include "HWComposer.h"
#include "SurfaceFlinger.h"
namespace android {
#define MIN_HWC_HEADER_VERSION 0
static uint32_t hwcApiVersion(const hwc_composer_device_1_t* hwc) {
uint32_t hwcVersion = hwc->common.version;
if (MIN_HWC_HEADER_VERSION == 0 &&
(hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK) == 0) {
// legacy version encoding
hwcVersion <<= 16;
}
return hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK;
}
static uint32_t hwcHeaderVersion(const hwc_composer_device_1_t* hwc) {
uint32_t hwcVersion = hwc->common.version;
if (MIN_HWC_HEADER_VERSION == 0 &&
(hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK) == 0) {
// legacy version encoding
hwcVersion <<= 16;
}
return hwcVersion & HARDWARE_API_VERSION_2_HEADER_MASK;
}
static bool hwcHasApiVersion(const hwc_composer_device_1_t* hwc,
uint32_t version) {
return hwcApiVersion(hwc) >= (version & HARDWARE_API_VERSION_2_MAJ_MIN_MASK);
}
// ---------------------------------------------------------------------------
struct HWComposer::cb_context {
struct callbacks : public hwc_procs_t {
// these are here to facilitate the transition when adding
// new callbacks (an implementation can check for NULL before
// calling a new callback).
void (*zero[4])(void);
};
callbacks procs;
HWComposer* hwc;
};
// ---------------------------------------------------------------------------
HWComposer::HWComposer(
const sp<SurfaceFlinger>& flinger,
EventHandler& handler,
framebuffer_device_t const* fbDev)
: mFlinger(flinger),
mModule(0), mHwc(0), mNumDisplays(1),
mCBContext(new cb_context),
mEventHandler(handler),
mVSyncCount(0), mDebugForceFakeVSync(false)
{
for (size_t i =0 ; i<MAX_DISPLAYS ; i++) {
mLists[i] = 0;
}
char value[PROPERTY_VALUE_MAX];
property_get("debug.sf.no_hw_vsync", value, "0");
mDebugForceFakeVSync = atoi(value);
bool needVSyncThread = true;
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_1(mModule, &mHwc);
ALOGE_IF(err, "%s device failed to initialize (%s)",
HWC_HARDWARE_COMPOSER, strerror(-err));
if (err == 0) {
if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_0) ||
hwcHeaderVersion(mHwc) < MIN_HWC_HEADER_VERSION ||
hwcHeaderVersion(mHwc) > HWC_HEADER_VERSION) {
ALOGE("%s device version %#x unsupported, will not be used",
HWC_HARDWARE_COMPOSER, mHwc->common.version);
hwc_close_1(mHwc);
mHwc = NULL;
}
}
if (mHwc) {
ALOGI("Using %s version %u.%u", HWC_HARDWARE_COMPOSER,
(hwcApiVersion(mHwc) >> 24) & 0xff,
(hwcApiVersion(mHwc) >> 16) & 0xff);
if (mHwc->registerProcs) {
mCBContext->hwc = this;
mCBContext->procs.invalidate = &hook_invalidate;
mCBContext->procs.vsync = &hook_vsync;
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1))
mCBContext->procs.hotplug = &hook_hotplug;
else
mCBContext->procs.hotplug = NULL;
memset(mCBContext->procs.zero, 0, sizeof(mCBContext->procs.zero));
mHwc->registerProcs(mHwc, &mCBContext->procs);
}
// always turn vsync off when we start
needVSyncThread = false;
mHwc->eventControl(mHwc, HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0);
// these IDs are always reserved
for (size_t i=0 ; i<HWC_NUM_DISPLAY_TYPES ; i++) {
mAllocatedDisplayIDs.markBit(i);
}
// the number of displays we actually have depends on the
// hw composer version
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_2)) {
// 1.2 adds support for virtual displays
mNumDisplays = MAX_DISPLAYS;
} else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
// 1.1 adds support for multiple displays
mNumDisplays = HWC_NUM_DISPLAY_TYPES;
} else {
mNumDisplays = 1;
}
}
}
if (fbDev) {
ALOG_ASSERT(!(mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)),
"should only have fbdev if no hwc or hwc is 1.0");
DisplayData& disp(mDisplayData[HWC_DISPLAY_PRIMARY]);
disp.xdpi = fbDev->xdpi;
disp.ydpi = fbDev->ydpi;
if (disp.refresh == 0) {
disp.refresh = nsecs_t(1e9 / fbDev->fps);
ALOGW("getting VSYNC period from fb HAL: %lld", disp.refresh);
}
if (disp.refresh == 0) {
disp.refresh = nsecs_t(1e9 / 60.0);
ALOGW("getting VSYNC period from thin air: %lld",
mDisplayData[HWC_DISPLAY_PRIMARY].refresh);
}
} else if (mHwc) {
queryDisplayProperties(HWC_DISPLAY_PRIMARY);
}
if (needVSyncThread) {
// we don't have VSYNC support, we need to fake it
mVSyncThread = new VSyncThread(*this);
}
}
HWComposer::~HWComposer() {
mHwc->eventControl(mHwc, 0, EVENT_VSYNC, 0);
if (mVSyncThread != NULL) {
mVSyncThread->requestExitAndWait();
}
if (mHwc) {
hwc_close_1(mHwc);
}
delete mCBContext;
}
status_t HWComposer::initCheck() const {
return mHwc ? NO_ERROR : NO_INIT;
}
void HWComposer::hook_invalidate(const struct hwc_procs* procs) {
cb_context* ctx = reinterpret_cast<cb_context*>(
const_cast<hwc_procs_t*>(procs));
ctx->hwc->invalidate();
}
void HWComposer::hook_vsync(const struct hwc_procs* procs, int disp,
int64_t timestamp) {
cb_context* ctx = reinterpret_cast<cb_context*>(
const_cast<hwc_procs_t*>(procs));
ctx->hwc->vsync(disp, timestamp);
}
void HWComposer::hook_hotplug(const struct hwc_procs* procs, int disp,
int connected) {
cb_context* ctx = reinterpret_cast<cb_context*>(
const_cast<hwc_procs_t*>(procs));
ctx->hwc->hotplug(disp, connected);
}
void HWComposer::invalidate() {
mFlinger->repaintEverything();
}
void HWComposer::vsync(int disp, int64_t timestamp) {
ATRACE_INT("VSYNC", ++mVSyncCount&1);
mEventHandler.onVSyncReceived(disp, timestamp);
Mutex::Autolock _l(mLock);
mLastHwVSync = timestamp;
}
void HWComposer::hotplug(int disp, int connected) {
if (disp == HWC_DISPLAY_PRIMARY || disp >= HWC_NUM_DISPLAY_TYPES) {
ALOGE("hotplug event received for invalid display: disp=%d connected=%d",
disp, connected);
return;
}
if (connected)
queryDisplayProperties(disp);
// TODO: tell someone else about this
}
static const uint32_t DISPLAY_ATTRIBUTES[] = {
HWC_DISPLAY_VSYNC_PERIOD,
HWC_DISPLAY_RESOLUTION_X,
HWC_DISPLAY_RESOLUTION_Y,
HWC_DISPLAY_DPI_X,
HWC_DISPLAY_DPI_Y,
HWC_DISPLAY_NO_ATTRIBUTE,
};
#define NUM_DISPLAY_ATTRIBUTES (sizeof(DISPLAY_ATTRIBUTES) / sizeof(DISPLAY_ATTRIBUTES)[0])
// http://developer.android.com/reference/android/util/DisplayMetrics.html
#define ANDROID_DENSITY_TV 213
#define ANDROID_DENSITY_XHIGH 320
void HWComposer::queryDisplayProperties(int disp) {
ALOG_ASSERT(mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1));
int32_t values[NUM_DISPLAY_ATTRIBUTES - 1];
memset(values, 0, sizeof(values));
uint32_t config;
size_t numConfigs = 1;
status_t err = mHwc->getDisplayConfigs(mHwc, disp, &config, &numConfigs);
if (err == NO_ERROR) {
mHwc->getDisplayAttributes(mHwc, disp, config, DISPLAY_ATTRIBUTES,
values);
}
int32_t w = 0, h = 0;
for (size_t i = 0; i < NUM_DISPLAY_ATTRIBUTES - 1; i++) {
switch (DISPLAY_ATTRIBUTES[i]) {
case HWC_DISPLAY_VSYNC_PERIOD:
mDisplayData[disp].refresh = nsecs_t(values[i]);
break;
case HWC_DISPLAY_RESOLUTION_X:
// TODO: we'll probably want to remember this eventually
w = values[i];
break;
case HWC_DISPLAY_RESOLUTION_Y:
// TODO: we'll probably want to remember this eventually
h = values[i];
break;
case HWC_DISPLAY_DPI_X:
mDisplayData[disp].xdpi = values[i] / 1000.0f;
break;
case HWC_DISPLAY_DPI_Y:
mDisplayData[disp].ydpi = values[i] / 1000.0f;
break;
default:
ALOG_ASSERT(false, "unknown display attribute %#x",
DISPLAY_ATTRIBUTES[i]);
break;
}
}
if (mDisplayData[disp].xdpi == 0.0f || mDisplayData[disp].ydpi == 0.0f) {
// is there anything smarter we can do?
if (h >= 1080) {
mDisplayData[disp].xdpi = ANDROID_DENSITY_XHIGH;
mDisplayData[disp].ydpi = ANDROID_DENSITY_XHIGH;
} else {
mDisplayData[disp].xdpi = ANDROID_DENSITY_TV;
mDisplayData[disp].ydpi = ANDROID_DENSITY_TV;
}
}
}
int32_t HWComposer::allocateDisplayId() {
if (mAllocatedDisplayIDs.count() >= mNumDisplays) {
return NO_MEMORY;
}
int32_t id = mAllocatedDisplayIDs.firstUnmarkedBit();
mAllocatedDisplayIDs.markBit(id);
return id;
}
status_t HWComposer::freeDisplayId(int32_t id) {
if (id < HWC_NUM_DISPLAY_TYPES) {
// cannot free the reserved IDs
return BAD_VALUE;
}
if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
return BAD_INDEX;
}
mAllocatedDisplayIDs.clearBit(id);
return NO_ERROR;
}
nsecs_t HWComposer::getRefreshPeriod() const {
return mDisplayData[HWC_DISPLAY_PRIMARY].refresh;
}
nsecs_t HWComposer::getRefreshTimestamp() const {
// this returns the last refresh timestamp.
// if the last one is not available, we estimate it based on
// the refresh period and whatever closest timestamp we have.
Mutex::Autolock _l(mLock);
nsecs_t now = systemTime(CLOCK_MONOTONIC);
return now - ((now - mLastHwVSync) % mDisplayData[HWC_DISPLAY_PRIMARY].refresh);
}
float HWComposer::getDpiX() const {
return mDisplayData[HWC_DISPLAY_PRIMARY].xdpi;
}
float HWComposer::getDpiY() const {
return mDisplayData[HWC_DISPLAY_PRIMARY].ydpi;
}
void HWComposer::eventControl(int event, int enabled) {
status_t err = NO_ERROR;
if (mHwc) {
if (!mDebugForceFakeVSync) {
err = mHwc->eventControl(mHwc, 0, 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);
}
}
status_t HWComposer::createWorkList(int32_t id, size_t numLayers) {
if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
return BAD_INDEX;
}
if (mHwc) {
DisplayData& disp(mDisplayData[id]);
if (disp.capacity < numLayers || disp.list == NULL) {
const size_t size = sizeof(hwc_display_contents_1_t)
+ numLayers * sizeof(hwc_layer_1_t);
free(disp.list);
disp.list = (hwc_display_contents_1_t*)malloc(size);
disp.capacity = numLayers;
}
disp.list->flags = HWC_GEOMETRY_CHANGED;
disp.list->numHwLayers = numLayers;
disp.list->flipFenceFd = -1;
}
return NO_ERROR;
}
status_t HWComposer::prepare() {
for (size_t i=0 ; i<mNumDisplays ; i++) {
mLists[i] = mDisplayData[i].list;
if (mLists[i]) {
mLists[i]->dpy = EGL_NO_DISPLAY;
mLists[i]->sur = EGL_NO_SURFACE;
}
}
int err = mHwc->prepare(mHwc, mNumDisplays, mLists);
if (err == NO_ERROR) {
// here we're just making sure that "skip" layers are set
// to HWC_FRAMEBUFFER and we're also counting how many layers
// we have of each type.
for (size_t i=0 ; i<mNumDisplays ; i++) {
DisplayData& disp(mDisplayData[i]);
disp.hasFbComp = false;
disp.hasOvComp = false;
if (disp.list) {
for (size_t i=0 ; i<disp.list->numHwLayers ; i++) {
hwc_layer_1_t& l = disp.list->hwLayers[i];
if (l.flags & HWC_SKIP_LAYER) {
l.compositionType = HWC_FRAMEBUFFER;
}
if (l.compositionType == HWC_FRAMEBUFFER) {
disp.hasFbComp = true;
}
if (l.compositionType == HWC_OVERLAY) {
disp.hasOvComp = true;
}
}
}
}
}
return (status_t)err;
}
bool HWComposer::hasHwcComposition(int32_t id) const {
if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id))
return false;
return mDisplayData[id].hasOvComp;
}
bool HWComposer::hasGlesComposition(int32_t id) const {
if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id))
return false;
return mDisplayData[id].hasFbComp;
}
status_t HWComposer::commit() {
int err = NO_ERROR;
if (mHwc) {
if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
// On version 1.0, the OpenGL ES target surface is communicated
// by the (dpy, sur) fields and we are guaranteed to have only
// a single display.
mLists[0]->dpy = eglGetCurrentDisplay();
mLists[0]->sur = eglGetCurrentSurface(EGL_DRAW);
}
err = mHwc->set(mHwc, mNumDisplays, mLists);
for (size_t i=0 ; i<mNumDisplays ; i++) {
DisplayData& disp(mDisplayData[i]);
if (disp.list) {
if (disp.list->flipFenceFd != -1) {
close(disp.list->flipFenceFd);
disp.list->flipFenceFd = -1;
}
disp.list->flags &= ~HWC_GEOMETRY_CHANGED;
}
}
}
return (status_t)err;
}
status_t HWComposer::release() const {
if (mHwc) {
mHwc->eventControl(mHwc, 0, HWC_EVENT_VSYNC, 0);
return (status_t)mHwc->blank(mHwc, 0, 1);
}
return NO_ERROR;
}
status_t HWComposer::acquire() const {
if (mHwc) {
return (status_t)mHwc->blank(mHwc, 0, 0);
}
return NO_ERROR;
}
size_t HWComposer::getNumLayers(int32_t id) const {
if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
return 0;
}
return (mHwc && mDisplayData[id].list) ?
mDisplayData[id].list->numHwLayers : 0;
}
/*
* Helper template to implement a concrete HWCLayer
* This holds the pointer to the concrete hwc layer type
* and implements the "iterable" side of HWCLayer.
*/
template<typename CONCRETE, typename HWCTYPE>
class Iterable : public HWComposer::HWCLayer {
protected:
HWCTYPE* const mLayerList;
HWCTYPE* mCurrentLayer;
Iterable(HWCTYPE* layer) : mLayerList(layer), mCurrentLayer(layer) { }
inline HWCTYPE const * getLayer() const { return mCurrentLayer; }
inline HWCTYPE* getLayer() { return mCurrentLayer; }
virtual ~Iterable() { }
private:
// returns a copy of ourselves
virtual HWComposer::HWCLayer* dup() {
return new CONCRETE( static_cast<const CONCRETE&>(*this) );
}
virtual status_t setLayer(size_t index) {
mCurrentLayer = &mLayerList[index];
return NO_ERROR;
}
};
/*
* Concrete implementation of HWCLayer for HWC_DEVICE_API_VERSION_1_0.
* This implements the HWCLayer side of HWCIterableLayer.
*/
class HWCLayerVersion1 : public Iterable<HWCLayerVersion1, hwc_layer_1_t> {
public:
HWCLayerVersion1(hwc_layer_1_t* layer)
: Iterable<HWCLayerVersion1, hwc_layer_1_t>(layer) { }
virtual int32_t getCompositionType() const {
return getLayer()->compositionType;
}
virtual uint32_t getHints() const {
return getLayer()->hints;
}
virtual int getAndResetReleaseFenceFd() {
int fd = getLayer()->releaseFenceFd;
getLayer()->releaseFenceFd = -1;
return fd;
}
virtual void setAcquireFenceFd(int fenceFd) {
getLayer()->acquireFenceFd = fenceFd;
}
virtual void setDefaultState() {
getLayer()->compositionType = HWC_FRAMEBUFFER;
getLayer()->hints = 0;
getLayer()->flags = HWC_SKIP_LAYER;
getLayer()->transform = 0;
getLayer()->blending = HWC_BLENDING_NONE;
getLayer()->visibleRegionScreen.numRects = 0;
getLayer()->visibleRegionScreen.rects = NULL;
getLayer()->acquireFenceFd = -1;
getLayer()->releaseFenceFd = -1;
}
virtual void setSkip(bool skip) {
if (skip) {
getLayer()->flags |= HWC_SKIP_LAYER;
} else {
getLayer()->flags &= ~HWC_SKIP_LAYER;
}
}
virtual void setBlending(uint32_t blending) {
getLayer()->blending = blending;
}
virtual void setTransform(uint32_t transform) {
getLayer()->transform = transform;
}
virtual void setFrame(const Rect& frame) {
reinterpret_cast<Rect&>(getLayer()->displayFrame) = frame;
}
virtual void setCrop(const Rect& crop) {
reinterpret_cast<Rect&>(getLayer()->sourceCrop) = crop;
}
virtual void setVisibleRegionScreen(const Region& reg) {
// Region::getSharedBuffer creates a reference to the underlying
// SharedBuffer of this Region, this reference is freed
// in onDisplayed()
hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen;
SharedBuffer const* sb = reg.getSharedBuffer(&visibleRegion.numRects);
visibleRegion.rects = reinterpret_cast<hwc_rect_t const *>(sb->data());
}
virtual void setBuffer(const sp<GraphicBuffer>& buffer) {
if (buffer == 0 || buffer->handle == 0) {
getLayer()->compositionType = HWC_FRAMEBUFFER;
getLayer()->flags |= HWC_SKIP_LAYER;
getLayer()->handle = 0;
} else {
getLayer()->handle = buffer->handle;
}
}
virtual void onDisplayed() {
hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen;
SharedBuffer const* sb = SharedBuffer::bufferFromData(visibleRegion.rects);
if (sb) {
sb->release();
// not technically needed but safer
visibleRegion.numRects = 0;
visibleRegion.rects = NULL;
}
getLayer()->acquireFenceFd = -1;
}
};
/*
* returns an iterator initialized at a given index in the layer list
*/
HWComposer::LayerListIterator HWComposer::getLayerIterator(int32_t id, size_t index) {
if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
return LayerListIterator();
}
const DisplayData& disp(mDisplayData[id]);
if (!mHwc || !disp.list || index > disp.list->numHwLayers) {
return LayerListIterator();
}
return LayerListIterator(new HWCLayerVersion1(disp.list->hwLayers), index);
}
/*
* returns an iterator on the beginning of the layer list
*/
HWComposer::LayerListIterator HWComposer::begin(int32_t id) {
return getLayerIterator(id, 0);
}
/*
* returns an iterator on the end of the layer list
*/
HWComposer::LayerListIterator HWComposer::end(int32_t id) {
return getLayerIterator(id, getNumLayers(id));
}
void HWComposer::dump(String8& result, char* buffer, size_t SIZE,
const Vector< sp<LayerBase> >& visibleLayersSortedByZ) const {
if (mHwc) {
result.append("Hardware Composer state:\n");
result.appendFormat(" mDebugForceFakeVSync=%d\n", mDebugForceFakeVSync);
for (size_t i=0 ; i<mNumDisplays ; i++) {
const DisplayData& disp(mDisplayData[i]);
if (disp.list) {
result.appendFormat(" id=%d, numHwLayers=%u, flags=%08x\n",
i, disp.list->numHwLayers, disp.list->flags);
result.append(
" type | handle | hints | flags | tr | blend | format | source crop | frame name \n"
"----------+----------+----------+----------+----+-------+----------+---------------------------+--------------------------------\n");
// " ________ | ________ | ________ | ________ | __ | _____ | ________ | [_____,_____,_____,_____] | [_____,_____,_____,_____]
for (size_t i=0 ; i<disp.list->numHwLayers ; i++) {
const hwc_layer_1_t&l = disp.list->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->dump) {
mHwc->dump(mHwc, buffer, SIZE);
result.append(buffer);
}
}
// ---------------------------------------------------------------------------
HWComposer::VSyncThread::VSyncThread(HWComposer& hwc)
: mHwc(hwc), mEnabled(false),
mNextFakeVSync(0),
mRefreshPeriod(hwc.getRefreshPeriod())
{
}
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
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