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replicant-frameworks_native/services/surfaceflinger/DisplayHardware/HWComposer.cpp

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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 {
// ---------------------------------------------------------------------------
// Support for HWC_DEVICE_API_VERSION_0_3 and older:
// Since v0.3 is deprecated and support will be dropped soon, as much as
// possible the code is written to target v1.0. When using a v0.3 HWC, we
// allocate v0.3 structures, but assign them to v1.0 pointers.
#if HWC_REMOVE_DEPRECATED_VERSIONS
// We need complete types to satisfy semantic checks, even though the code
// paths that use these won't get executed at runtime (and will likely be dead-
// code-eliminated). When we remove the code to support v0.3 we can remove
// these as well.
typedef hwc_layer_1_t hwc_layer_t;
typedef hwc_display_contents_1_t hwc_layer_list_t;
typedef hwc_composer_device_1_t hwc_composer_device_t;
#endif
// This function assumes we've already rejected HWC's with lower-than-required
// versions. Don't use it for the initial "does HWC meet requirements" check!
static bool hwcHasVersion(const hwc_composer_device_1_t* hwc, uint32_t version) {
if (HWC_REMOVE_DEPRECATED_VERSIONS &&
version <= HWC_DEVICE_API_VERSION_1_0) {
return true;
} else {
return hwc->common.version >= version;
}
}
static bool hwcHasVsyncEvent(const hwc_composer_device_1_t* hwc) {
return hwcHasVersion(hwc, HWC_DEVICE_API_VERSION_0_3);
}
static size_t sizeofHwcLayerList(const hwc_composer_device_1_t* hwc,
size_t numLayers) {
if (hwcHasVersion(hwc, HWC_DEVICE_API_VERSION_1_0)) {
return sizeof(hwc_display_contents_1_t) + numLayers*sizeof(hwc_layer_1_t);
} else {
return sizeof(hwc_layer_list_t) + numLayers*sizeof(hwc_layer_t);
}
}
static int hwcEventControl(hwc_composer_device_1_t* hwc, int dpy,
int event, int enabled) {
if (hwcHasVersion(hwc, HWC_DEVICE_API_VERSION_1_0)) {
return hwc->methods->eventControl(hwc, dpy, event, enabled);
} else {
hwc_composer_device_t* hwc0 = reinterpret_cast<hwc_composer_device_t*>(hwc);
return hwc0->methods->eventControl(hwc0, event, enabled);
}
}
static int hwcBlank(hwc_composer_device_1_t* hwc, int dpy, int blank) {
if (hwcHasVersion(hwc, HWC_DEVICE_API_VERSION_1_0)) {
return hwc->methods->blank(hwc, dpy, blank);
} else {
if (blank) {
hwc_composer_device_t* hwc0 = reinterpret_cast<hwc_composer_device_t*>(hwc);
return hwc0->set(hwc0, NULL, NULL, NULL);
} else {
// HWC 0.x turns the screen on at the next set()
return NO_ERROR;
}
}
}
static int hwcPrepare(hwc_composer_device_1_t* hwc,
size_t numDisplays, hwc_display_contents_1_t** displays) {
if (hwcHasVersion(hwc, HWC_DEVICE_API_VERSION_1_0)) {
return hwc->prepare(hwc, numDisplays, displays);
} else {
hwc_composer_device_t* hwc0 = reinterpret_cast<hwc_composer_device_t*>(hwc);
hwc_layer_list_t* list0 = reinterpret_cast<hwc_layer_list_t*>(displays[0]);
// In the past, SurfaceFlinger would pass a NULL list when doing full
// OpenGL ES composition. I don't know what, if any, dependencies there
// are on this behavior, so I'm playing it safe and preserving it.
if (list0->numHwLayers == 0)
return hwc0->prepare(hwc0, NULL);
else
return hwc0->prepare(hwc0, list0);
}
}
static int hwcSet(hwc_composer_device_1_t* hwc, EGLDisplay dpy, EGLSurface sur,
size_t numDisplays, hwc_display_contents_1_t** displays) {
int err;
if (hwcHasVersion(hwc, HWC_DEVICE_API_VERSION_1_0)) {
displays[0]->dpy = dpy;
displays[0]->sur = sur;
err = hwc->set(hwc, numDisplays, displays);
} else {
hwc_composer_device_t* hwc0 = reinterpret_cast<hwc_composer_device_t*>(hwc);
hwc_layer_list_t* list0 = reinterpret_cast<hwc_layer_list_t*>(displays[0]);
err = hwc0->set(hwc0, dpy, sur, list0);
}
return err;
}
static uint32_t& hwcFlags(hwc_composer_device_1_t* hwc,
hwc_display_contents_1_t* display) {
if (hwcHasVersion(hwc, HWC_DEVICE_API_VERSION_1_0)) {
return display->flags;
} else {
hwc_layer_list_t* list0 = reinterpret_cast<hwc_layer_list_t*>(display);
return list0->flags;
}
}
static size_t& hwcNumHwLayers(hwc_composer_device_1_t* hwc,
hwc_display_contents_1_t* display) {
if (hwcHasVersion(hwc, HWC_DEVICE_API_VERSION_1_0)) {
return display->numHwLayers;
} else {
hwc_layer_list_t* list0 = reinterpret_cast<hwc_layer_list_t*>(display);
return list0->numHwLayers;
}
}
// ---------------------------------------------------------------------------
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), mCapacity(0),
mNumOVLayers(0), mNumFBLayers(0),
mCBContext(new cb_context),
mEventHandler(handler), mRefreshPeriod(0),
mVSyncCount(0), mDebugForceFakeVSync(false)
{
for (size_t i = 0; i < MAX_DISPLAYS; i++)
mLists[i] = NULL;
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 (HWC_REMOVE_DEPRECATED_VERSIONS &&
mHwc->common.version < HWC_DEVICE_API_VERSION_1_0) {
ALOGE("%s device version %#x too old, will not be used",
HWC_HARDWARE_COMPOSER, mHwc->common.version);
hwc_close_1(mHwc);
mHwc = NULL;
}
}
if (mHwc) {
// always turn vsync off when we start
needVSyncThread = false;
if (hwcHasVsyncEvent(mHwc)) {
hwcEventControl(mHwc, 0, HWC_EVENT_VSYNC, 0);
int period;
if (mHwc->query(mHwc, HWC_VSYNC_PERIOD, &period) == NO_ERROR) {
mRefreshPeriod = nsecs_t(period);
}
} else {
needVSyncThread = true;
}
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));
}
// create initial empty display contents for display 0
createWorkList(MAIN, 0);
}
}
if (fbDev) {
if (mRefreshPeriod == 0) {
mRefreshPeriod = nsecs_t(1e9 / fbDev->fps);
ALOGW("getting VSYNC period from fb HAL: %lld", mRefreshPeriod);
}
mDpiX = fbDev->xdpi;
mDpiY = fbDev->ydpi;
}
if (mRefreshPeriod == 0) {
mRefreshPeriod = nsecs_t(1e9 / 60.0);
ALOGW("getting VSYNC period thin air: %lld", mRefreshPeriod);
}
if (needVSyncThread) {
// we don't have VSYNC support, we need to fake it
mVSyncThread = new VSyncThread(*this);
}
}
HWComposer::~HWComposer() {
hwcEventControl(mHwc, 0, EVENT_VSYNC, 0);
for (size_t i = 0; i < MAX_DISPLAYS; i++)
free(mLists[i]);
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(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);
Mutex::Autolock _l(mLock);
mLastHwVSync = timestamp;
}
nsecs_t HWComposer::getRefreshPeriod() const {
return mRefreshPeriod;
}
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) % mRefreshPeriod);
}
float HWComposer::getDpiX() const {
return mDpiX;
}
float HWComposer::getDpiY() const {
return mDpiY;
}
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 = hwcEventControl(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) {
// FIXME: handle multiple displays
if (uint32_t(id) >= MAX_DISPLAYS)
return BAD_INDEX;
if (mHwc) {
// TODO: must handle multiple displays here
// mLists[0] is NULL only when this is called from the constructor
if (!mLists[0] || mCapacity < numLayers) {
free(mLists[0]);
size_t size = sizeofHwcLayerList(mHwc, numLayers);
mLists[0] = (hwc_display_contents_1_t*)malloc(size);
mCapacity = numLayers;
}
hwcFlags(mHwc, mLists[0]) = HWC_GEOMETRY_CHANGED;
hwcNumHwLayers(mHwc, mLists[0]) = numLayers;
if (hwcHasVersion(mHwc, HWC_DEVICE_API_VERSION_1_0)) {
mLists[0]->flipFenceFd = -1;
}
}
return NO_ERROR;
}
status_t HWComposer::prepare() const {
int err = hwcPrepare(mHwc, 1,
const_cast<hwc_display_contents_1_t**>(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.
// It would be nice if we could get rid of this entirely, which I
// think is almost possible.
// TODO: must handle multiple displays here
size_t numOVLayers = 0;
size_t numFBLayers = 0;
size_t count = getNumLayers(0);
for (size_t i=0 ; i<count ; i++) {
int compositionType;
if (hwcHasVersion(mHwc, HWC_DEVICE_API_VERSION_1_0)) {
hwc_layer_1_t* l = &mLists[0]->hwLayers[i];
if (l->flags & HWC_SKIP_LAYER) {
l->compositionType = HWC_FRAMEBUFFER;
}
compositionType = l->compositionType;
} else {
// mList really has hwc_layer_list_t memory layout
hwc_layer_list_t* list0 = reinterpret_cast<hwc_layer_list_t*>(mLists[0]);
hwc_layer_t* l = &list0->hwLayers[i];
if (l->flags & HWC_SKIP_LAYER) {
l->compositionType = HWC_FRAMEBUFFER;
}
compositionType = l->compositionType;
}
switch (compositionType) {
case HWC_OVERLAY:
numOVLayers++;
break;
case HWC_FRAMEBUFFER:
numFBLayers++;
break;
}
}
mNumOVLayers = numOVLayers;
mNumFBLayers = numFBLayers;
}
return (status_t)err;
}
size_t HWComposer::getLayerCount(int32_t id, int type) const {
// FIXME: handle multiple displays
if (uint32_t(id) >= MAX_DISPLAYS) {
// FIXME: in practice this is only use to know
// if we have at least one layer of type.
return (type == HWC_FRAMEBUFFER) ? 1 : 0;
}
switch (type) {
case HWC_OVERLAY:
return mNumOVLayers;
case HWC_FRAMEBUFFER:
return mNumFBLayers;
}
return 0;
}
status_t HWComposer::commit(void* fbDisplay, void* fbSurface) const {
int err = NO_ERROR;
if (mHwc) {
err = hwcSet(mHwc, fbDisplay, fbSurface, 1,
const_cast<hwc_display_contents_1_t**>(mLists));
if (hwcHasVersion(mHwc, HWC_DEVICE_API_VERSION_1_0)) {
if (mLists[0]->flipFenceFd != -1) {
close(mLists[0]->flipFenceFd);
mLists[0]->flipFenceFd = -1;
}
}
hwcFlags(mHwc, mLists[0]) &= ~HWC_GEOMETRY_CHANGED;
}
return (status_t)err;
}
status_t HWComposer::release() const {
if (mHwc) {
if (hwcHasVsyncEvent(mHwc)) {
hwcEventControl(mHwc, 0, HWC_EVENT_VSYNC, 0);
}
return (status_t)hwcBlank(mHwc, 0, 1);
}
return NO_ERROR;
}
status_t HWComposer::acquire() const {
if (mHwc) {
return (status_t)hwcBlank(mHwc, 0, 0);
}
return NO_ERROR;
}
status_t HWComposer::disable() {
if (mHwc) {
hwcNumHwLayers(mHwc, mLists[0]) = 0;
int err = hwcPrepare(mHwc, 1, mLists);
return (status_t)err;
}
return NO_ERROR;
}
size_t HWComposer::getNumLayers(int32_t id) const { // FIXME: handle multiple displays
return mHwc ? hwcNumHwLayers(mHwc, mLists[0]) : 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;
}
};
// #if !HWC_REMOVE_DEPRECATED_VERSIONS
/*
* Concrete implementation of HWCLayer for HWC_DEVICE_API_VERSION_0_3
* This implements the HWCLayer side of HWCIterableLayer.
*/
class HWCLayerVersion0 : public Iterable<HWCLayerVersion0, hwc_layer_t> {
public:
HWCLayerVersion0(hwc_layer_t* layer)
: Iterable<HWCLayerVersion0, hwc_layer_t>(layer) { }
virtual int32_t getCompositionType() const {
return getLayer()->compositionType;
}
virtual uint32_t getHints() const {
return getLayer()->hints;
}
virtual int getAndResetReleaseFenceFd() {
// not supported on VERSION_03
return -1;
}
virtual void setAcquireFenceFd(int fenceFd) {
if (fenceFd != -1) {
ALOGE("HWC 0.x can't handle acquire fences");
close(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;
}
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) {
getLayer()->visibleRegionScreen.rects =
reinterpret_cast<hwc_rect_t const *>(
reg.getArray(&getLayer()->visibleRegionScreen.numRects));
}
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;
}
}
};
// #endif // !HWC_REMOVE_DEPRECATED_VERSIONS
/*
* 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) {
getLayer()->visibleRegionScreen.rects =
reinterpret_cast<hwc_rect_t const *>(
reg.getArray(&getLayer()->visibleRegionScreen.numRects));
}
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;
}
}
};
/*
* returns an iterator initialized at a given index in the layer list
*/
HWComposer::LayerListIterator HWComposer::getLayerIterator(int32_t id, size_t index) {
// FIXME: handle multiple displays
if (uint32_t(id) >= MAX_DISPLAYS)
return LayerListIterator();
if (!mHwc || index > hwcNumHwLayers(mHwc, mLists[0]))
return LayerListIterator();
if (hwcHasVersion(mHwc, HWC_DEVICE_API_VERSION_1_0)) {
return LayerListIterator(new HWCLayerVersion1(mLists[0]->hwLayers),
index);
} else {
hwc_layer_list_t* list0 = reinterpret_cast<hwc_layer_list_t*>(mLists[0]);
return LayerListIterator(new HWCLayerVersion0(list0->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) {
hwc_layer_list_t* list0 = reinterpret_cast<hwc_layer_list_t*>(mLists[0]);
result.append("Hardware Composer state:\n");
result.appendFormat(" mDebugForceFakeVSync=%d\n",
mDebugForceFakeVSync);
result.appendFormat(" numHwLayers=%u, flags=%08x\n",
hwcNumHwLayers(mHwc, mLists[0]), hwcFlags(mHwc, mLists[0]));
result.append(
" type | handle | hints | flags | tr | blend | format | source crop | frame name \n"
"----------+----------+----------+----------+----+-------+----------+---------------------------+--------------------------------\n");
// " ________ | ________ | ________ | ________ | __ | _____ | ________ | [_____,_____,_____,_____] | [_____,_____,_____,_____]
for (size_t i=0 ; i<hwcNumHwLayers(mHwc, mLists[0]) ; i++) {
hwc_layer_1_t const* lp;
if (hwcHasVersion(mHwc, HWC_DEVICE_API_VERSION_1_0)) {
lp = &mLists[0]->hwLayers[i];
} else {
// FIXME: here we rely on hwc_layer_1_t and hwc_layer_t having the same layout
lp = reinterpret_cast<hwc_layer_1_t const*>(&list0->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();
}
}
const hwc_layer_1_t& l(*lp);
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 && hwcHasVersion(mHwc, 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
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