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replicant-frameworks_native/libs/gui/SurfaceComposerClient.cpp
Dan Stoza c701401f8c Allow disabling layer rotation during screenshots 
Add the ability to ignore layers' transformation matrices during
screenshot capture, which will allow the window manager to capture
unrotated images for recents during the device rotation animation.

Bug: 11805195
Change-Id: I854d87bc84ca06ef9a054a454af1c080ee66fbb8
2014-02-14 23:10:42 +00:00

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/*
* Copyright (C) 2007 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 LOG_TAG "SurfaceComposerClient"
#include <stdint.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <utils/Log.h>
#include <utils/Singleton.h>
#include <utils/SortedVector.h>
#include <utils/String8.h>
#include <utils/threads.h>
#include <binder/IMemory.h>
#include <binder/IServiceManager.h>
#include <ui/DisplayInfo.h>
#include <gui/CpuConsumer.h>
#include <gui/IGraphicBufferProducer.h>
#include <gui/ISurfaceComposer.h>
#include <gui/ISurfaceComposerClient.h>
#include <gui/SurfaceComposerClient.h>
#include <private/gui/ComposerService.h>
#include <private/gui/LayerState.h>
namespace android {
// ---------------------------------------------------------------------------
ANDROID_SINGLETON_STATIC_INSTANCE(ComposerService);
ComposerService::ComposerService()
: Singleton<ComposerService>() {
Mutex::Autolock _l(mLock);
connectLocked();
}
void ComposerService::connectLocked() {
const String16 name("SurfaceFlinger");
while (getService(name, &mComposerService) != NO_ERROR) {
usleep(250000);
}
assert(mComposerService != NULL);
// Create the death listener.
class DeathObserver : public IBinder::DeathRecipient {
ComposerService& mComposerService;
virtual void binderDied(const wp<IBinder>& who) {
ALOGW("ComposerService remote (surfaceflinger) died [%p]",
who.unsafe_get());
mComposerService.composerServiceDied();
}
public:
DeathObserver(ComposerService& mgr) : mComposerService(mgr) { }
};
mDeathObserver = new DeathObserver(*const_cast<ComposerService*>(this));
mComposerService->asBinder()->linkToDeath(mDeathObserver);
}
/*static*/ sp<ISurfaceComposer> ComposerService::getComposerService() {
ComposerService& instance = ComposerService::getInstance();
Mutex::Autolock _l(instance.mLock);
if (instance.mComposerService == NULL) {
ComposerService::getInstance().connectLocked();
assert(instance.mComposerService != NULL);
ALOGD("ComposerService reconnected");
}
return instance.mComposerService;
}
void ComposerService::composerServiceDied()
{
Mutex::Autolock _l(mLock);
mComposerService = NULL;
mDeathObserver = NULL;
}
// ---------------------------------------------------------------------------
static inline
int compare_type(const ComposerState& lhs, const ComposerState& rhs) {
if (lhs.client < rhs.client) return -1;
if (lhs.client > rhs.client) return 1;
if (lhs.state.surface < rhs.state.surface) return -1;
if (lhs.state.surface > rhs.state.surface) return 1;
return 0;
}
static inline
int compare_type(const DisplayState& lhs, const DisplayState& rhs) {
return compare_type(lhs.token, rhs.token);
}
class Composer : public Singleton<Composer>
{
friend class Singleton<Composer>;
mutable Mutex mLock;
SortedVector<ComposerState> mComposerStates;
SortedVector<DisplayState > mDisplayStates;
uint32_t mForceSynchronous;
uint32_t mTransactionNestCount;
bool mAnimation;
Composer() : Singleton<Composer>(),
mForceSynchronous(0), mTransactionNestCount(0),
mAnimation(false)
{ }
void openGlobalTransactionImpl();
void closeGlobalTransactionImpl(bool synchronous);
void setAnimationTransactionImpl();
layer_state_t* getLayerStateLocked(
const sp<SurfaceComposerClient>& client, const sp<IBinder>& id);
DisplayState& getDisplayStateLocked(const sp<IBinder>& token);
public:
sp<IBinder> createDisplay(const String8& displayName, bool secure);
void destroyDisplay(const sp<IBinder>& display);
sp<IBinder> getBuiltInDisplay(int32_t id);
status_t setPosition(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
float x, float y);
status_t setSize(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
uint32_t w, uint32_t h);
status_t setLayer(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
int32_t z);
status_t setFlags(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
uint32_t flags, uint32_t mask);
status_t setTransparentRegionHint(
const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
const Region& transparentRegion);
status_t setAlpha(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
float alpha);
status_t setMatrix(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
float dsdx, float dtdx, float dsdy, float dtdy);
status_t setOrientation(int orientation);
status_t setCrop(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
const Rect& crop);
status_t setLayerStack(const sp<SurfaceComposerClient>& client,
const sp<IBinder>& id, uint32_t layerStack);
void setDisplaySurface(const sp<IBinder>& token,
const sp<IGraphicBufferProducer>& bufferProducer);
void setDisplayLayerStack(const sp<IBinder>& token, uint32_t layerStack);
void setDisplayProjection(const sp<IBinder>& token,
uint32_t orientation,
const Rect& layerStackRect,
const Rect& displayRect);
static void setAnimationTransaction() {
Composer::getInstance().setAnimationTransactionImpl();
}
static void openGlobalTransaction() {
Composer::getInstance().openGlobalTransactionImpl();
}
static void closeGlobalTransaction(bool synchronous) {
Composer::getInstance().closeGlobalTransactionImpl(synchronous);
}
};
ANDROID_SINGLETON_STATIC_INSTANCE(Composer);
// ---------------------------------------------------------------------------
sp<IBinder> Composer::createDisplay(const String8& displayName, bool secure) {
return ComposerService::getComposerService()->createDisplay(displayName,
secure);
}
void Composer::destroyDisplay(const sp<IBinder>& display) {
return ComposerService::getComposerService()->destroyDisplay(display);
}
sp<IBinder> Composer::getBuiltInDisplay(int32_t id) {
return ComposerService::getComposerService()->getBuiltInDisplay(id);
}
void Composer::openGlobalTransactionImpl() {
{ // scope for the lock
Mutex::Autolock _l(mLock);
mTransactionNestCount += 1;
}
}
void Composer::closeGlobalTransactionImpl(bool synchronous) {
sp<ISurfaceComposer> sm(ComposerService::getComposerService());
Vector<ComposerState> transaction;
Vector<DisplayState> displayTransaction;
uint32_t flags = 0;
{ // scope for the lock
Mutex::Autolock _l(mLock);
mForceSynchronous |= synchronous;
if (!mTransactionNestCount) {
ALOGW("At least one call to closeGlobalTransaction() was not matched by a prior "
"call to openGlobalTransaction().");
} else if (--mTransactionNestCount) {
return;
}
transaction = mComposerStates;
mComposerStates.clear();
displayTransaction = mDisplayStates;
mDisplayStates.clear();
if (mForceSynchronous) {
flags |= ISurfaceComposer::eSynchronous;
}
if (mAnimation) {
flags |= ISurfaceComposer::eAnimation;
}
mForceSynchronous = false;
mAnimation = false;
}
sm->setTransactionState(transaction, displayTransaction, flags);
}
void Composer::setAnimationTransactionImpl() {
Mutex::Autolock _l(mLock);
mAnimation = true;
}
layer_state_t* Composer::getLayerStateLocked(
const sp<SurfaceComposerClient>& client, const sp<IBinder>& id) {
ComposerState s;
s.client = client->mClient;
s.state.surface = id;
ssize_t index = mComposerStates.indexOf(s);
if (index < 0) {
// we don't have it, add an initialized layer_state to our list
index = mComposerStates.add(s);
}
ComposerState* const out = mComposerStates.editArray();
return &(out[index].state);
}
status_t Composer::setPosition(const sp<SurfaceComposerClient>& client,
const sp<IBinder>& id, float x, float y) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
s->what |= layer_state_t::ePositionChanged;
s->x = x;
s->y = y;
return NO_ERROR;
}
status_t Composer::setSize(const sp<SurfaceComposerClient>& client,
const sp<IBinder>& id, uint32_t w, uint32_t h) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
s->what |= layer_state_t::eSizeChanged;
s->w = w;
s->h = h;
// Resizing a surface makes the transaction synchronous.
mForceSynchronous = true;
return NO_ERROR;
}
status_t Composer::setLayer(const sp<SurfaceComposerClient>& client,
const sp<IBinder>& id, int32_t z) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
s->what |= layer_state_t::eLayerChanged;
s->z = z;
return NO_ERROR;
}
status_t Composer::setFlags(const sp<SurfaceComposerClient>& client,
const sp<IBinder>& id, uint32_t flags,
uint32_t mask) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
if (mask & layer_state_t::eLayerOpaque) {
s->what |= layer_state_t::eOpacityChanged;
}
if (mask & layer_state_t::eLayerHidden) {
s->what |= layer_state_t::eVisibilityChanged;
}
s->flags &= ~mask;
s->flags |= (flags & mask);
s->mask |= mask;
return NO_ERROR;
}
status_t Composer::setTransparentRegionHint(
const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
const Region& transparentRegion) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
s->what |= layer_state_t::eTransparentRegionChanged;
s->transparentRegion = transparentRegion;
return NO_ERROR;
}
status_t Composer::setAlpha(const sp<SurfaceComposerClient>& client,
const sp<IBinder>& id, float alpha) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
s->what |= layer_state_t::eAlphaChanged;
s->alpha = alpha;
return NO_ERROR;
}
status_t Composer::setLayerStack(const sp<SurfaceComposerClient>& client,
const sp<IBinder>& id, uint32_t layerStack) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
s->what |= layer_state_t::eLayerStackChanged;
s->layerStack = layerStack;
return NO_ERROR;
}
status_t Composer::setMatrix(const sp<SurfaceComposerClient>& client,
const sp<IBinder>& id, float dsdx, float dtdx,
float dsdy, float dtdy) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
s->what |= layer_state_t::eMatrixChanged;
layer_state_t::matrix22_t matrix;
matrix.dsdx = dsdx;
matrix.dtdx = dtdx;
matrix.dsdy = dsdy;
matrix.dtdy = dtdy;
s->matrix = matrix;
return NO_ERROR;
}
status_t Composer::setCrop(const sp<SurfaceComposerClient>& client,
const sp<IBinder>& id, const Rect& crop) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
s->what |= layer_state_t::eCropChanged;
s->crop = crop;
return NO_ERROR;
}
// ---------------------------------------------------------------------------
DisplayState& Composer::getDisplayStateLocked(const sp<IBinder>& token) {
DisplayState s;
s.token = token;
ssize_t index = mDisplayStates.indexOf(s);
if (index < 0) {
// we don't have it, add an initialized layer_state to our list
s.what = 0;
index = mDisplayStates.add(s);
}
return mDisplayStates.editItemAt(index);
}
void Composer::setDisplaySurface(const sp<IBinder>& token,
const sp<IGraphicBufferProducer>& bufferProducer) {
Mutex::Autolock _l(mLock);
DisplayState& s(getDisplayStateLocked(token));
s.surface = bufferProducer;
s.what |= DisplayState::eSurfaceChanged;
}
void Composer::setDisplayLayerStack(const sp<IBinder>& token,
uint32_t layerStack) {
Mutex::Autolock _l(mLock);
DisplayState& s(getDisplayStateLocked(token));
s.layerStack = layerStack;
s.what |= DisplayState::eLayerStackChanged;
}
void Composer::setDisplayProjection(const sp<IBinder>& token,
uint32_t orientation,
const Rect& layerStackRect,
const Rect& displayRect) {
Mutex::Autolock _l(mLock);
DisplayState& s(getDisplayStateLocked(token));
s.orientation = orientation;
s.viewport = layerStackRect;
s.frame = displayRect;
s.what |= DisplayState::eDisplayProjectionChanged;
mForceSynchronous = true; // TODO: do we actually still need this?
}
// ---------------------------------------------------------------------------
SurfaceComposerClient::SurfaceComposerClient()
: mStatus(NO_INIT), mComposer(Composer::getInstance())
{
}
void SurfaceComposerClient::onFirstRef() {
sp<ISurfaceComposer> sm(ComposerService::getComposerService());
if (sm != 0) {
sp<ISurfaceComposerClient> conn = sm->createConnection();
if (conn != 0) {
mClient = conn;
mStatus = NO_ERROR;
}
}
}
SurfaceComposerClient::~SurfaceComposerClient() {
dispose();
}
status_t SurfaceComposerClient::initCheck() const {
return mStatus;
}
sp<IBinder> SurfaceComposerClient::connection() const {
return (mClient != 0) ? mClient->asBinder() : 0;
}
status_t SurfaceComposerClient::linkToComposerDeath(
const sp<IBinder::DeathRecipient>& recipient,
void* cookie, uint32_t flags) {
sp<ISurfaceComposer> sm(ComposerService::getComposerService());
return sm->asBinder()->linkToDeath(recipient, cookie, flags);
}
void SurfaceComposerClient::dispose() {
// this can be called more than once.
sp<ISurfaceComposerClient> client;
Mutex::Autolock _lm(mLock);
if (mClient != 0) {
client = mClient; // hold ref while lock is held
mClient.clear();
}
mStatus = NO_INIT;
}
sp<SurfaceControl> SurfaceComposerClient::createSurface(
const String8& name,
uint32_t w,
uint32_t h,
PixelFormat format,
uint32_t flags)
{
sp<SurfaceControl> sur;
if (mStatus == NO_ERROR) {
sp<IBinder> handle;
sp<IGraphicBufferProducer> gbp;
status_t err = mClient->createSurface(name, w, h, format, flags,
&handle, &gbp);
ALOGE_IF(err, "SurfaceComposerClient::createSurface error %s", strerror(-err));
if (err == NO_ERROR) {
sur = new SurfaceControl(this, handle, gbp);
}
}
return sur;
}
sp<IBinder> SurfaceComposerClient::createDisplay(const String8& displayName,
bool secure) {
return Composer::getInstance().createDisplay(displayName, secure);
}
void SurfaceComposerClient::destroyDisplay(const sp<IBinder>& display) {
Composer::getInstance().destroyDisplay(display);
}
sp<IBinder> SurfaceComposerClient::getBuiltInDisplay(int32_t id) {
return Composer::getInstance().getBuiltInDisplay(id);
}
status_t SurfaceComposerClient::destroySurface(const sp<IBinder>& sid) {
if (mStatus != NO_ERROR)
return mStatus;
status_t err = mClient->destroySurface(sid);
return err;
}
inline Composer& SurfaceComposerClient::getComposer() {
return mComposer;
}
// ----------------------------------------------------------------------------
void SurfaceComposerClient::openGlobalTransaction() {
Composer::openGlobalTransaction();
}
void SurfaceComposerClient::closeGlobalTransaction(bool synchronous) {
Composer::closeGlobalTransaction(synchronous);
}
void SurfaceComposerClient::setAnimationTransaction() {
Composer::setAnimationTransaction();
}
// ----------------------------------------------------------------------------
status_t SurfaceComposerClient::setCrop(const sp<IBinder>& id, const Rect& crop) {
return getComposer().setCrop(this, id, crop);
}
status_t SurfaceComposerClient::setPosition(const sp<IBinder>& id, float x, float y) {
return getComposer().setPosition(this, id, x, y);
}
status_t SurfaceComposerClient::setSize(const sp<IBinder>& id, uint32_t w, uint32_t h) {
return getComposer().setSize(this, id, w, h);
}
status_t SurfaceComposerClient::setLayer(const sp<IBinder>& id, int32_t z) {
return getComposer().setLayer(this, id, z);
}
status_t SurfaceComposerClient::hide(const sp<IBinder>& id) {
return getComposer().setFlags(this, id,
layer_state_t::eLayerHidden,
layer_state_t::eLayerHidden);
}
status_t SurfaceComposerClient::show(const sp<IBinder>& id) {
return getComposer().setFlags(this, id,
0,
layer_state_t::eLayerHidden);
}
status_t SurfaceComposerClient::setFlags(const sp<IBinder>& id, uint32_t flags,
uint32_t mask) {
return getComposer().setFlags(this, id, flags, mask);
}
status_t SurfaceComposerClient::setTransparentRegionHint(const sp<IBinder>& id,
const Region& transparentRegion) {
return getComposer().setTransparentRegionHint(this, id, transparentRegion);
}
status_t SurfaceComposerClient::setAlpha(const sp<IBinder>& id, float alpha) {
return getComposer().setAlpha(this, id, alpha);
}
status_t SurfaceComposerClient::setLayerStack(const sp<IBinder>& id, uint32_t layerStack) {
return getComposer().setLayerStack(this, id, layerStack);
}
status_t SurfaceComposerClient::setMatrix(const sp<IBinder>& id, float dsdx, float dtdx,
float dsdy, float dtdy) {
return getComposer().setMatrix(this, id, dsdx, dtdx, dsdy, dtdy);
}
// ----------------------------------------------------------------------------
void SurfaceComposerClient::setDisplaySurface(const sp<IBinder>& token,
const sp<IGraphicBufferProducer>& bufferProducer) {
Composer::getInstance().setDisplaySurface(token, bufferProducer);
}
void SurfaceComposerClient::setDisplayLayerStack(const sp<IBinder>& token,
uint32_t layerStack) {
Composer::getInstance().setDisplayLayerStack(token, layerStack);
}
void SurfaceComposerClient::setDisplayProjection(const sp<IBinder>& token,
uint32_t orientation,
const Rect& layerStackRect,
const Rect& displayRect) {
Composer::getInstance().setDisplayProjection(token, orientation,
layerStackRect, displayRect);
}
// ----------------------------------------------------------------------------
status_t SurfaceComposerClient::getDisplayInfo(
const sp<IBinder>& display, DisplayInfo* info)
{
return ComposerService::getComposerService()->getDisplayInfo(display, info);
}
void SurfaceComposerClient::blankDisplay(const sp<IBinder>& token) {
ComposerService::getComposerService()->blank(token);
}
void SurfaceComposerClient::unblankDisplay(const sp<IBinder>& token) {
ComposerService::getComposerService()->unblank(token);
}
// ----------------------------------------------------------------------------
status_t ScreenshotClient::capture(
const sp<IBinder>& display,
const sp<IGraphicBufferProducer>& producer,
uint32_t reqWidth, uint32_t reqHeight,
uint32_t minLayerZ, uint32_t maxLayerZ, bool useIdentityTransform) {
sp<ISurfaceComposer> s(ComposerService::getComposerService());
if (s == NULL) return NO_INIT;
return s->captureScreen(display, producer,
reqWidth, reqHeight, minLayerZ, maxLayerZ, useIdentityTransform);
}
ScreenshotClient::ScreenshotClient()
: mHaveBuffer(false) {
memset(&mBuffer, 0, sizeof(mBuffer));
}
ScreenshotClient::~ScreenshotClient() {
ScreenshotClient::release();
}
sp<CpuConsumer> ScreenshotClient::getCpuConsumer() const {
if (mCpuConsumer == NULL) {
mBufferQueue = new BufferQueue();
mCpuConsumer = new CpuConsumer(mBufferQueue, 1);
mCpuConsumer->setName(String8("ScreenshotClient"));
}
return mCpuConsumer;
}
status_t ScreenshotClient::update(const sp<IBinder>& display,
uint32_t reqWidth, uint32_t reqHeight,
uint32_t minLayerZ, uint32_t maxLayerZ,
bool useIdentityTransform) {
sp<ISurfaceComposer> s(ComposerService::getComposerService());
if (s == NULL) return NO_INIT;
sp<CpuConsumer> cpuConsumer = getCpuConsumer();
if (mHaveBuffer) {
mCpuConsumer->unlockBuffer(mBuffer);
memset(&mBuffer, 0, sizeof(mBuffer));
mHaveBuffer = false;
}
status_t err = s->captureScreen(display, mBufferQueue,
reqWidth, reqHeight, minLayerZ, maxLayerZ, useIdentityTransform);
if (err == NO_ERROR) {
err = mCpuConsumer->lockNextBuffer(&mBuffer);
if (err == NO_ERROR) {
mHaveBuffer = true;
}
}
return err;
}
status_t ScreenshotClient::update(const sp<IBinder>& display,
bool useIdentityTransform) {
return ScreenshotClient::update(display, 0, 0, 0, -1UL,
useIdentityTransform);
}
status_t ScreenshotClient::update(const sp<IBinder>& display,
uint32_t reqWidth, uint32_t reqHeight, bool useIdentityTransform) {
return ScreenshotClient::update(display, reqWidth, reqHeight, 0, -1UL,
useIdentityTransform);
}
void ScreenshotClient::release() {
if (mHaveBuffer) {
mCpuConsumer->unlockBuffer(mBuffer);
memset(&mBuffer, 0, sizeof(mBuffer));
mHaveBuffer = false;
}
mCpuConsumer.clear();
}
void const* ScreenshotClient::getPixels() const {
return mBuffer.data;
}
uint32_t ScreenshotClient::getWidth() const {
return mBuffer.width;
}
uint32_t ScreenshotClient::getHeight() const {
return mBuffer.height;
}
PixelFormat ScreenshotClient::getFormat() const {
return mBuffer.format;
}
uint32_t ScreenshotClient::getStride() const {
return mBuffer.stride;
}
size_t ScreenshotClient::getSize() const {
return mBuffer.stride * mBuffer.height * bytesPerPixel(mBuffer.format);
}
// ----------------------------------------------------------------------------
}; // namespace android
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