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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 <surfaceflinger/ISurface.h>
#include <surfaceflinger/ISurfaceComposer.h>
#include <surfaceflinger/ISurfaceComposerClient.h>
#include <surfaceflinger/SurfaceComposerClient.h>
#include <private/surfaceflinger/LayerState.h>
#include <private/surfaceflinger/SharedBufferStack.h>
namespace android {
// ---------------------------------------------------------------------------
ANDROID_SINGLETON_STATIC_INSTANCE(ComposerService);
ComposerService::ComposerService()
: Singleton<ComposerService>() {
const String16 name("SurfaceFlinger");
while (getService(name, &mComposerService) != NO_ERROR) {
usleep(250000);
}
mServerCblkMemory = mComposerService->getCblk();
mServerCblk = static_cast<surface_flinger_cblk_t volatile *>(
mServerCblkMemory->getBase());
}
sp<ISurfaceComposer> ComposerService::getComposerService() {
return ComposerService::getInstance().mComposerService;
}
surface_flinger_cblk_t const volatile * ComposerService::getControlBlock() {
return ComposerService::getInstance().mServerCblk;
}
static inline sp<ISurfaceComposer> getComposerService() {
return ComposerService::getComposerService();
}
static inline surface_flinger_cblk_t const volatile * get_cblk() {
return ComposerService::getControlBlock();
}
// ---------------------------------------------------------------------------
// NOTE: this is NOT a member function (it's a friend defined with its
// declaration).
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;
}
class Composer : public Singleton<Composer>
{
friend class Singleton<Composer>;
mutable Mutex mLock;
SortedVector<ComposerState> mStates;
int mOrientation;
Composer() : Singleton<Composer>(),
mOrientation(ISurfaceComposer::eOrientationUnchanged) { }
void closeGlobalTransactionImpl();
layer_state_t* getLayerStateLocked(
const sp<SurfaceComposerClient>& client, SurfaceID id);
public:
status_t setPosition(const sp<SurfaceComposerClient>& client, SurfaceID id,
float x, float y);
status_t setSize(const sp<SurfaceComposerClient>& client, SurfaceID id,
uint32_t w, uint32_t h);
status_t setLayer(const sp<SurfaceComposerClient>& client, SurfaceID id,
int32_t z);
status_t setFlags(const sp<SurfaceComposerClient>& client, SurfaceID id,
uint32_t flags, uint32_t mask);
status_t setTransparentRegionHint(
const sp<SurfaceComposerClient>& client, SurfaceID id,
const Region& transparentRegion);
status_t setAlpha(const sp<SurfaceComposerClient>& client, SurfaceID id,
float alpha);
status_t setMatrix(const sp<SurfaceComposerClient>& client, SurfaceID id,
float dsdx, float dtdx, float dsdy, float dtdy);
status_t setFreezeTint(
const sp<SurfaceComposerClient>& client, SurfaceID id,
uint32_t tint);
status_t setOrientation(int orientation);
static void closeGlobalTransaction() {
Composer::getInstance().closeGlobalTransactionImpl();
}
};
ANDROID_SINGLETON_STATIC_INSTANCE(Composer);
// ---------------------------------------------------------------------------
void Composer::closeGlobalTransactionImpl() {
sp<ISurfaceComposer> sm(getComposerService());
Vector<ComposerState> transaction;
int orientation;
{ // scope for the lock
Mutex::Autolock _l(mLock);
transaction = mStates;
mStates.clear();
orientation = mOrientation;
mOrientation = ISurfaceComposer::eOrientationUnchanged;
}
sm->setTransactionState(transaction, orientation);
}
layer_state_t* Composer::getLayerStateLocked(
const sp<SurfaceComposerClient>& client, SurfaceID id) {
ComposerState s;
s.client = client->mClient;
s.state.surface = id;
ssize_t index = mStates.indexOf(s);
if (index < 0) {
// we don't have it, add an initialized layer_state to our list
index = mStates.add(s);
}
ComposerState* const out = mStates.editArray();
return &(out[index].state);
}
status_t Composer::setPosition(const sp<SurfaceComposerClient>& client,
SurfaceID id, float x, float y) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
s->what |= ISurfaceComposer::ePositionChanged;
s->x = x;
s->y = y;
return NO_ERROR;
}
status_t Composer::setSize(const sp<SurfaceComposerClient>& client,
SurfaceID 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 |= ISurfaceComposer::eSizeChanged;
s->w = w;
s->h = h;
return NO_ERROR;
}
status_t Composer::setLayer(const sp<SurfaceComposerClient>& client,
SurfaceID id, int32_t z) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
s->what |= ISurfaceComposer::eLayerChanged;
s->z = z;
return NO_ERROR;
}
status_t Composer::setFlags(const sp<SurfaceComposerClient>& client,
SurfaceID id, uint32_t flags,
uint32_t mask) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
s->what |= ISurfaceComposer::eVisibilityChanged;
s->flags &= ~mask;
s->flags |= (flags & mask);
s->mask |= mask;
return NO_ERROR;
}
status_t Composer::setTransparentRegionHint(
const sp<SurfaceComposerClient>& client, SurfaceID id,
const Region& transparentRegion) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
s->what |= ISurfaceComposer::eTransparentRegionChanged;
s->transparentRegion = transparentRegion;
return NO_ERROR;
}
status_t Composer::setAlpha(const sp<SurfaceComposerClient>& client,
SurfaceID id, float alpha) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
s->what |= ISurfaceComposer::eAlphaChanged;
s->alpha = alpha;
return NO_ERROR;
}
status_t Composer::setMatrix(const sp<SurfaceComposerClient>& client,
SurfaceID 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 |= ISurfaceComposer::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::setFreezeTint(const sp<SurfaceComposerClient>& client,
SurfaceID id, uint32_t tint) {
Mutex::Autolock _l(mLock);
layer_state_t* s = getLayerStateLocked(client, id);
if (!s)
return BAD_INDEX;
s->what |= ISurfaceComposer::eFreezeTintChanged;
s->tint = tint;
return NO_ERROR;
}
status_t Composer::setOrientation(int orientation) {
Mutex::Autolock _l(mLock);
mOrientation = orientation;
return NO_ERROR;
}
// ---------------------------------------------------------------------------
SurfaceComposerClient::SurfaceComposerClient()
: mStatus(NO_INIT), mComposer(Composer::getInstance())
{
}
void SurfaceComposerClient::onFirstRef() {
sp<ISurfaceComposer> sm(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(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(
DisplayID display,
uint32_t w,
uint32_t h,
PixelFormat format,
uint32_t flags)
{
String8 name;
const size_t SIZE = 128;
char buffer[SIZE];
snprintf(buffer, SIZE, "<pid_%d>", getpid());
name.append(buffer);
return SurfaceComposerClient::createSurface(name, display,
w, h, format, flags);
}
sp<SurfaceControl> SurfaceComposerClient::createSurface(
const String8& name,
DisplayID display,
uint32_t w,
uint32_t h,
PixelFormat format,
uint32_t flags)
{
sp<SurfaceControl> result;
if (mStatus == NO_ERROR) {
ISurfaceComposerClient::surface_data_t data;
sp<ISurface> surface = mClient->createSurface(&data, name,
display, w, h, format, flags);
if (surface != 0) {
result = new SurfaceControl(this, surface, data);
}
}
return result;
}
status_t SurfaceComposerClient::destroySurface(SurfaceID sid) {
if (mStatus != NO_ERROR)
return mStatus;
status_t err = mClient->destroySurface(sid);
return err;
}
inline Composer& SurfaceComposerClient::getComposer() {
return mComposer;
}
// ----------------------------------------------------------------------------
void SurfaceComposerClient::openGlobalTransaction() {
// Currently a no-op
}
void SurfaceComposerClient::closeGlobalTransaction() {
Composer::closeGlobalTransaction();
}
// ----------------------------------------------------------------------------
status_t SurfaceComposerClient::setFreezeTint(SurfaceID id, uint32_t tint) {
return getComposer().setFreezeTint(this, id, tint);
}
status_t SurfaceComposerClient::setPosition(SurfaceID id, float x, float y) {
return getComposer().setPosition(this, id, x, y);
}
status_t SurfaceComposerClient::setSize(SurfaceID id, uint32_t w, uint32_t h) {
return getComposer().setSize(this, id, w, h);
}
status_t SurfaceComposerClient::setLayer(SurfaceID id, int32_t z) {
return getComposer().setLayer(this, id, z);
}
status_t SurfaceComposerClient::hide(SurfaceID id) {
return getComposer().setFlags(this, id,
ISurfaceComposer::eLayerHidden,
ISurfaceComposer::eLayerHidden);
}
status_t SurfaceComposerClient::show(SurfaceID id, int32_t) {
return getComposer().setFlags(this, id,
0,
ISurfaceComposer::eLayerHidden);
}
status_t SurfaceComposerClient::freeze(SurfaceID id) {
return getComposer().setFlags(this, id,
ISurfaceComposer::eLayerFrozen,
ISurfaceComposer::eLayerFrozen);
}
status_t SurfaceComposerClient::unfreeze(SurfaceID id) {
return getComposer().setFlags(this, id,
0,
ISurfaceComposer::eLayerFrozen);
}
status_t SurfaceComposerClient::setFlags(SurfaceID id, uint32_t flags,
uint32_t mask) {
return getComposer().setFlags(this, id, flags, mask);
}
status_t SurfaceComposerClient::setTransparentRegionHint(SurfaceID id,
const Region& transparentRegion) {
return getComposer().setTransparentRegionHint(this, id, transparentRegion);
}
status_t SurfaceComposerClient::setAlpha(SurfaceID id, float alpha) {
return getComposer().setAlpha(this, id, alpha);
}
status_t SurfaceComposerClient::setMatrix(SurfaceID id, float dsdx, float dtdx,
float dsdy, float dtdy) {
return getComposer().setMatrix(this, id, dsdx, dtdx, dsdy, dtdy);
}
status_t SurfaceComposerClient::setOrientation(DisplayID dpy,
int orientation, uint32_t flags)
{
return Composer::getInstance().setOrientation(orientation);
}
// ----------------------------------------------------------------------------
status_t SurfaceComposerClient::getDisplayInfo(
DisplayID dpy, DisplayInfo* info)
{
if (uint32_t(dpy)>=NUM_DISPLAY_MAX)
return BAD_VALUE;
volatile surface_flinger_cblk_t const * cblk = get_cblk();
volatile display_cblk_t const * dcblk = cblk->displays + dpy;
info->w = dcblk->w;
info->h = dcblk->h;
info->orientation = dcblk->orientation;
info->xdpi = dcblk->xdpi;
info->ydpi = dcblk->ydpi;
info->fps = dcblk->fps;
info->density = dcblk->density;
return getPixelFormatInfo(dcblk->format, &(info->pixelFormatInfo));
}
ssize_t SurfaceComposerClient::getDisplayWidth(DisplayID dpy)
{
if (uint32_t(dpy)>=NUM_DISPLAY_MAX)
return BAD_VALUE;
volatile surface_flinger_cblk_t const * cblk = get_cblk();
volatile display_cblk_t const * dcblk = cblk->displays + dpy;
return dcblk->w;
}
ssize_t SurfaceComposerClient::getDisplayHeight(DisplayID dpy)
{
if (uint32_t(dpy)>=NUM_DISPLAY_MAX)
return BAD_VALUE;
volatile surface_flinger_cblk_t const * cblk = get_cblk();
volatile display_cblk_t const * dcblk = cblk->displays + dpy;
return dcblk->h;
}
ssize_t SurfaceComposerClient::getDisplayOrientation(DisplayID dpy)
{
if (uint32_t(dpy)>=NUM_DISPLAY_MAX)
return BAD_VALUE;
volatile surface_flinger_cblk_t const * cblk = get_cblk();
volatile display_cblk_t const * dcblk = cblk->displays + dpy;
return dcblk->orientation;
}
ssize_t SurfaceComposerClient::getNumberOfDisplays()
{
volatile surface_flinger_cblk_t const * cblk = get_cblk();
uint32_t connected = cblk->connected;
int n = 0;
while (connected) {
if (connected&1) n++;
connected >>= 1;
}
return n;
}
// ----------------------------------------------------------------------------
status_t SurfaceComposerClient::freezeDisplay(DisplayID dpy, uint32_t flags)
{
// This has been made a no-op because it can cause Gralloc buffer deadlocks.
return NO_ERROR;
}
status_t SurfaceComposerClient::unfreezeDisplay(DisplayID dpy, uint32_t flags)
{
// This has been made a no-op because it can cause Gralloc buffer deadlocks.
return NO_ERROR;
}
// ----------------------------------------------------------------------------
ScreenshotClient::ScreenshotClient()
: mWidth(0), mHeight(0), mFormat(PIXEL_FORMAT_NONE) {
}
status_t ScreenshotClient::update() {
sp<ISurfaceComposer> s(ComposerService::getComposerService());
if (s == NULL) return NO_INIT;
mHeap = 0;
return s->captureScreen(0, &mHeap,
&mWidth, &mHeight, &mFormat, 0, 0,
0, -1UL);
}
status_t ScreenshotClient::update(uint32_t reqWidth, uint32_t reqHeight) {
sp<ISurfaceComposer> s(ComposerService::getComposerService());
if (s == NULL) return NO_INIT;
mHeap = 0;
return s->captureScreen(0, &mHeap,
&mWidth, &mHeight, &mFormat, reqWidth, reqHeight,
0, -1UL);
}
status_t ScreenshotClient::update(uint32_t reqWidth, uint32_t reqHeight,
uint32_t minLayerZ, uint32_t maxLayerZ) {
sp<ISurfaceComposer> s(ComposerService::getComposerService());
if (s == NULL) return NO_INIT;
mHeap = 0;
return s->captureScreen(0, &mHeap,
&mWidth, &mHeight, &mFormat, reqWidth, reqHeight,
minLayerZ, maxLayerZ);
}
void ScreenshotClient::release() {
mHeap = 0;
}
void const* ScreenshotClient::getPixels() const {
return mHeap->getBase();
}
uint32_t ScreenshotClient::getWidth() const {
return mWidth;
}
uint32_t ScreenshotClient::getHeight() const {
return mHeight;
}
PixelFormat ScreenshotClient::getFormat() const {
return mFormat;
}
uint32_t ScreenshotClient::getStride() const {
return mWidth;
}
size_t ScreenshotClient::getSize() const {
return mHeap->getSize();
}
// ----------------------------------------------------------------------------
}; // namespace android