replicant-frameworks_native/libs/ui/Surface.cpp
Mathias Agopian 01b766839e more splitting of Surface/SurfaceControl. Surface.java is now implemented in terms of Surface and SurfaceControl.
The WindowManager side of Surface.java holds a SurfaceControl, while the client-side holds a Surface. When the client is in the system process, Surface.java holds both (which is a problem we'll try to fix later).
2009-04-16 20:04:08 -07:00

710 lines
22 KiB
C++

/*
* 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 "Surface"
#include <stdint.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <utils/Errors.h>
#include <utils/threads.h>
#include <utils/IPCThreadState.h>
#include <utils/IMemory.h>
#include <utils/Log.h>
#include <ui/DisplayInfo.h>
#include <ui/BufferMapper.h>
#include <ui/EGLNativeWindowSurface.h>
#include <ui/ISurface.h>
#include <ui/Surface.h>
#include <ui/SurfaceComposerClient.h>
#include <ui/Rect.h>
#include <EGL/android_natives.h>
#include <private/ui/SharedState.h>
#include <private/ui/LayerState.h>
#include <pixelflinger/pixelflinger.h>
namespace android {
// ============================================================================
// SurfaceBuffer
// ============================================================================
template<class SurfaceBuffer> Mutex Singleton<SurfaceBuffer>::sLock;
template<> SurfaceBuffer* Singleton<SurfaceBuffer>::sInstance(0);
SurfaceBuffer::SurfaceBuffer()
: BASE(), handle(0), mOwner(false)
{
width =
height =
stride =
format =
usage = 0;
android_native_buffer_t::getHandle = getHandle;
}
SurfaceBuffer::SurfaceBuffer(const Parcel& data)
: BASE(), handle(0), mOwner(true)
{
// we own the handle in this case
width = data.readInt32();
height = data.readInt32();
stride = data.readInt32();
format = data.readInt32();
usage = data.readInt32();
handle = data.readNativeHandle();
android_native_buffer_t::getHandle = getHandle;
}
SurfaceBuffer::~SurfaceBuffer()
{
if (handle && mOwner) {
native_handle_close(handle);
native_handle_delete(const_cast<native_handle*>(handle));
}
}
int SurfaceBuffer::getHandle(android_native_buffer_t const * base,
buffer_handle_t* handle)
{
*handle = getSelf(base)->handle;
return 0;
}
status_t SurfaceBuffer::writeToParcel(Parcel* reply,
android_native_buffer_t const* buffer)
{
buffer_handle_t handle;
status_t err = buffer->getHandle(buffer, &handle);
if (err < 0) {
return err;
}
reply->writeInt32(buffer->width);
reply->writeInt32(buffer->height);
reply->writeInt32(buffer->stride);
reply->writeInt32(buffer->format);
reply->writeInt32(buffer->usage);
reply->writeNativeHandle(handle);
return NO_ERROR;
}
// ----------------------------------------------------------------------
static void copyBlt(const android_native_buffer_t* dst,
const android_native_buffer_t* src, const Region& reg)
{
Region::iterator iterator(reg);
if (iterator) {
// NOTE: dst and src must be the same format
Rect r;
const size_t bpp = bytesPerPixel(src->format);
const size_t dbpr = dst->stride * bpp;
const size_t sbpr = src->stride * bpp;
while (iterator.iterate(&r)) {
ssize_t h = r.bottom - r.top;
if (h) {
size_t size = (r.right - r.left) * bpp;
uint8_t* s = (GGLubyte*)src->bits +
(r.left + src->stride * r.top) * bpp;
uint8_t* d = (GGLubyte*)dst->bits +
(r.left + dst->stride * r.top) * bpp;
if (dbpr==sbpr && size==sbpr) {
size *= h;
h = 1;
}
do {
memcpy(d, s, size);
d += dbpr;
s += sbpr;
} while (--h > 0);
}
}
}
}
// ============================================================================
// SurfaceControl
// ============================================================================
SurfaceControl::SurfaceControl(
const sp<SurfaceComposerClient>& client,
const sp<ISurface>& surface,
const ISurfaceFlingerClient::surface_data_t& data,
uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
bool owner)
: mClient(client), mSurface(surface),
mToken(data.token), mIdentity(data.identity),
mFormat(format), mFlags(flags), mOwner(owner)
{
}
SurfaceControl::~SurfaceControl()
{
destroy();
}
void SurfaceControl::destroy()
{
// Destroy the surface in SurfaceFlinger if we were the owner
// (in any case, a client won't be able to, because it won't have the
// right permission).
if (mOwner && mToken>=0 && mClient!=0) {
mClient->destroySurface(mToken);
}
// clear all references and trigger an IPC now, to make sure things
// happen without delay, since these resources are quite heavy.
mClient.clear();
mSurface.clear();
IPCThreadState::self()->flushCommands();
}
void SurfaceControl::clear()
{
// here, the window manager tells us explicitly that we should destroy
// the surface's resource. Soon after this call, it will also release
// its last reference (which will call the dtor); however, it is possible
// that a client living in the same process still holds references which
// would delay the call to the dtor -- that is why we need this explicit
// "clear()" call.
destroy();
}
bool SurfaceControl::isSameSurface(
const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs)
{
if (lhs == 0 || rhs == 0)
return false;
return lhs->mSurface->asBinder() == rhs->mSurface->asBinder();
}
status_t SurfaceControl::setLayer(int32_t layer) {
const sp<SurfaceComposerClient>& client(mClient);
if (client == 0) return NO_INIT;
status_t err = validate(client->mControl);
if (err < 0) return err;
return client->setLayer(mToken, layer);
}
status_t SurfaceControl::setPosition(int32_t x, int32_t y) {
const sp<SurfaceComposerClient>& client(mClient);
if (client == 0) return NO_INIT;
status_t err = validate(client->mControl);
if (err < 0) return err;
return client->setPosition(mToken, x, y);
}
status_t SurfaceControl::setSize(uint32_t w, uint32_t h) {
const sp<SurfaceComposerClient>& client(mClient);
if (client == 0) return NO_INIT;
status_t err = validate(client->mControl);
if (err < 0) return err;
return client->setSize(mToken, w, h);
}
status_t SurfaceControl::hide() {
const sp<SurfaceComposerClient>& client(mClient);
if (client == 0) return NO_INIT;
status_t err = validate(client->mControl);
if (err < 0) return err;
return client->hide(mToken);
}
status_t SurfaceControl::show(int32_t layer) {
const sp<SurfaceComposerClient>& client(mClient);
if (client == 0) return NO_INIT;
status_t err = validate(client->mControl);
if (err < 0) return err;
return client->show(mToken, layer);
}
status_t SurfaceControl::freeze() {
const sp<SurfaceComposerClient>& client(mClient);
if (client == 0) return NO_INIT;
status_t err = validate(client->mControl);
if (err < 0) return err;
return client->freeze(mToken);
}
status_t SurfaceControl::unfreeze() {
const sp<SurfaceComposerClient>& client(mClient);
if (client == 0) return NO_INIT;
status_t err = validate(client->mControl);
if (err < 0) return err;
return client->unfreeze(mToken);
}
status_t SurfaceControl::setFlags(uint32_t flags, uint32_t mask) {
const sp<SurfaceComposerClient>& client(mClient);
if (client == 0) return NO_INIT;
status_t err = validate(client->mControl);
if (err < 0) return err;
return client->setFlags(mToken, flags, mask);
}
status_t SurfaceControl::setTransparentRegionHint(const Region& transparent) {
const sp<SurfaceComposerClient>& client(mClient);
if (client == 0) return NO_INIT;
status_t err = validate(client->mControl);
if (err < 0) return err;
return client->setTransparentRegionHint(mToken, transparent);
}
status_t SurfaceControl::setAlpha(float alpha) {
const sp<SurfaceComposerClient>& client(mClient);
if (client == 0) return NO_INIT;
status_t err = validate(client->mControl);
if (err < 0) return err;
return client->setAlpha(mToken, alpha);
}
status_t SurfaceControl::setMatrix(float dsdx, float dtdx, float dsdy, float dtdy) {
const sp<SurfaceComposerClient>& client(mClient);
if (client == 0) return NO_INIT;
status_t err = validate(client->mControl);
if (err < 0) return err;
return client->setMatrix(mToken, dsdx, dtdx, dsdy, dtdy);
}
status_t SurfaceControl::setFreezeTint(uint32_t tint) {
const sp<SurfaceComposerClient>& client(mClient);
if (client == 0) return NO_INIT;
status_t err = validate(client->mControl);
if (err < 0) return err;
return client->setFreezeTint(mToken, tint);
}
status_t SurfaceControl::validate(per_client_cblk_t const* cblk) const
{
if (mToken<0 || mClient==0) {
LOGE("invalid token (%d, identity=%u) or client (%p)",
mToken, mIdentity, mClient.get());
return NO_INIT;
}
if (cblk == 0) {
LOGE("cblk is null (surface id=%d, identity=%u)", mToken, mIdentity);
return NO_INIT;
}
status_t err = cblk->validate(mToken);
if (err != NO_ERROR) {
LOGE("surface (id=%d, identity=%u) is invalid, err=%d (%s)",
mToken, mIdentity, err, strerror(-err));
return err;
}
if (mIdentity != uint32_t(cblk->layers[mToken].identity)) {
LOGE("using an invalid surface id=%d, identity=%u should be %d",
mToken, mIdentity, cblk->layers[mToken].identity);
return NO_INIT;
}
return NO_ERROR;
}
status_t SurfaceControl::writeSurfaceToParcel(
const sp<SurfaceControl>& control, Parcel* parcel)
{
uint32_t flags = 0;
uint32_t format = 0;
SurfaceID token = -1;
uint32_t identity = 0;
sp<SurfaceComposerClient> client;
sp<ISurface> sur;
if (SurfaceControl::isValid(control)) {
token = control->mToken;
identity = control->mIdentity;
client = control->mClient;
sur = control->mSurface;
format = control->mFormat;
flags = control->mFlags;
}
parcel->writeStrongBinder(client!=0 ? client->connection() : NULL);
parcel->writeStrongBinder(sur!=0 ? sur->asBinder() : NULL);
parcel->writeInt32(token);
parcel->writeInt32(identity);
parcel->writeInt32(format);
parcel->writeInt32(flags);
return NO_ERROR;
}
sp<Surface> SurfaceControl::getSurface() const
{
Mutex::Autolock _l(mLock);
if (mSurfaceData == 0) {
mSurfaceData = new Surface(const_cast<SurfaceControl*>(this));
}
return mSurfaceData;
}
// ============================================================================
// Surface
// ============================================================================
Surface::Surface(const sp<SurfaceControl>& surface)
: mClient(surface->mClient), mSurface(surface->mSurface),
mToken(surface->mToken), mIdentity(surface->mIdentity),
mFormat(surface->mFormat), mFlags(surface->mFlags),
mOwner(surface->mOwner)
{
init();
}
Surface::Surface(const Parcel& parcel)
: mOwner(false)
{
sp<IBinder> clientBinder = parcel.readStrongBinder();
mSurface = interface_cast<ISurface>(parcel.readStrongBinder());
mToken = parcel.readInt32();
mIdentity = parcel.readInt32();
mFormat = parcel.readInt32();
mFlags = parcel.readInt32();
if (clientBinder != NULL)
mClient = SurfaceComposerClient::clientForConnection(clientBinder);
init();
}
void Surface::init()
{
android_native_window_t::connect = connect;
android_native_window_t::disconnect = disconnect;
android_native_window_t::setSwapInterval = setSwapInterval;
android_native_window_t::setSwapRectangle = setSwapRectangle;
android_native_window_t::dequeueBuffer = dequeueBuffer;
android_native_window_t::lockBuffer = lockBuffer;
android_native_window_t::queueBuffer = queueBuffer;
mSwapRectangle.makeInvalid();
DisplayInfo dinfo;
SurfaceComposerClient::getDisplayInfo(0, &dinfo);
const_cast<float&>(android_native_window_t::xdpi) = dinfo.xdpi;
const_cast<float&>(android_native_window_t::ydpi) = dinfo.ydpi;
// FIXME: set real values here
const_cast<int&>(android_native_window_t::minSwapInterval) = 1;
const_cast<int&>(android_native_window_t::maxSwapInterval) = 1;
const_cast<uint32_t&>(android_native_window_t::flags) = 0;
}
Surface::~Surface()
{
// this is a client-side operation, the surface is destroyed, unmap
// its buffers in this process.
for (int i=0 ; i<2 ; i++) {
if (mBuffers[i] != 0) {
BufferMapper::get().unmap(mBuffers[i]->getHandle(), this);
}
}
// clear all references and trigger an IPC now, to make sure things
// happen without delay, since these resources are quite heavy.
mClient.clear();
mSurface.clear();
IPCThreadState::self()->flushCommands();
}
status_t Surface::validate(per_client_cblk_t const* cblk) const
{
if (mToken<0 || mClient==0) {
LOGE("invalid token (%d, identity=%u) or client (%p)",
mToken, mIdentity, mClient.get());
return NO_INIT;
}
if (cblk == 0) {
LOGE("cblk is null (surface id=%d, identity=%u)", mToken, mIdentity);
return NO_INIT;
}
status_t err = cblk->validate(mToken);
if (err != NO_ERROR) {
LOGE("surface (id=%d, identity=%u) is invalid, err=%d (%s)",
mToken, mIdentity, err, strerror(-err));
return err;
}
if (mIdentity != uint32_t(cblk->layers[mToken].identity)) {
LOGE("using an invalid surface id=%d, identity=%u should be %d",
mToken, mIdentity, cblk->layers[mToken].identity);
return NO_INIT;
}
return NO_ERROR;
}
bool Surface::isSameSurface(
const sp<Surface>& lhs, const sp<Surface>& rhs)
{
if (lhs == 0 || rhs == 0)
return false;
return lhs->mSurface->asBinder() == rhs->mSurface->asBinder();
}
// ----------------------------------------------------------------------------
int Surface::setSwapRectangle(android_native_window_t* window,
int l, int t, int w, int h)
{
Surface* self = getSelf(window);
self->setSwapRectangle(Rect(l, t, l+w, t+h));
return 0;
}
void Surface::connect(android_native_window_t* window)
{
}
void Surface::disconnect(android_native_window_t* window)
{
}
int Surface::setSwapInterval(android_native_window_t* window, int interval)
{
return 0;
}
int Surface::dequeueBuffer(android_native_window_t* window,
android_native_buffer_t** buffer)
{
Surface* self = getSelf(window);
return self->dequeueBuffer(buffer);
}
int Surface::lockBuffer(android_native_window_t* window,
android_native_buffer_t* buffer)
{
Surface* self = getSelf(window);
return self->lockBuffer(buffer);
}
int Surface::queueBuffer(android_native_window_t* window,
android_native_buffer_t* buffer)
{
Surface* self = getSelf(window);
return self->queueBuffer(buffer);
}
// ----------------------------------------------------------------------------
int Surface::dequeueBuffer(android_native_buffer_t** buffer)
{
// FIXME: dequeueBuffer() needs proper implementation
Mutex::Autolock _l(mSurfaceLock);
per_client_cblk_t* const cblk = mClient->mControl;
status_t err = validate(cblk);
if (err != NO_ERROR)
return err;
SurfaceID index(mToken);
int32_t backIdx = cblk->lock_layer(size_t(index),
per_client_cblk_t::BLOCKING);
if (backIdx < 0)
return status_t(backIdx);
mBackbufferIndex = backIdx;
layer_cblk_t* const lcblk = &(cblk->layers[index]);
volatile const surface_info_t* const back = lcblk->surface + backIdx;
if (back->flags & surface_info_t::eNeedNewBuffer) {
getBufferLocked(backIdx);
}
const sp<SurfaceBuffer>& backBuffer(mBuffers[backIdx]);
*buffer = backBuffer.get();
return NO_ERROR;
}
int Surface::lockBuffer(android_native_buffer_t* buffer)
{
Mutex::Autolock _l(mSurfaceLock);
per_client_cblk_t* const cblk = mClient->mControl;
status_t err = validate(cblk);
if (err != NO_ERROR)
return err;
// FIXME: lockBuffer() needs proper implementation
return 0;
}
int Surface::queueBuffer(android_native_buffer_t* buffer)
{
Mutex::Autolock _l(mSurfaceLock);
per_client_cblk_t* const cblk = mClient->mControl;
status_t err = validate(cblk);
if (err != NO_ERROR)
return err;
// transmit the dirty region
const Region dirty(swapRectangle());
SurfaceID index(mToken);
layer_cblk_t* const lcblk = &(cblk->layers[index]);
_send_dirty_region(lcblk, dirty);
uint32_t newstate = cblk->unlock_layer_and_post(size_t(index));
if (!(newstate & eNextFlipPending))
mClient->signalServer();
return NO_ERROR;
}
// ----------------------------------------------------------------------------
status_t Surface::lock(SurfaceInfo* info, bool blocking) {
return Surface::lock(info, NULL, blocking);
}
status_t Surface::lock(SurfaceInfo* other, Region* dirty, bool blocking)
{
// FIXME: needs some locking here
android_native_buffer_t* backBuffer;
status_t err = dequeueBuffer(&backBuffer);
if (err == NO_ERROR) {
err = lockBuffer(backBuffer);
if (err == NO_ERROR) {
backBuffer->common.incRef(&backBuffer->common);
mLockedBuffer = backBuffer;
other->w = backBuffer->width;
other->h = backBuffer->height;
other->s = backBuffer->stride;
other->usage = backBuffer->usage;
other->format = backBuffer->format;
other->bits = backBuffer->bits;
// we handle copy-back here...
const Rect bounds(backBuffer->width, backBuffer->height);
Region newDirtyRegion;
per_client_cblk_t* const cblk = mClient->mControl;
layer_cblk_t* const lcblk = &(cblk->layers[SurfaceID(mToken)]);
volatile const surface_info_t* const back = lcblk->surface + mBackbufferIndex;
if (back->flags & surface_info_t::eBufferDirty) {
// content is meaningless in this case and the whole surface
// needs to be redrawn.
newDirtyRegion.set(bounds);
if (dirty) {
*dirty = newDirtyRegion;
}
} else
{
if (dirty) {
dirty->andSelf(Region(bounds));
newDirtyRegion = *dirty;
} else {
newDirtyRegion.set(bounds);
}
Region copyback;
if (!(lcblk->flags & eNoCopyBack)) {
const Region previousDirtyRegion(dirtyRegion());
copyback = previousDirtyRegion.subtract(newDirtyRegion);
}
const sp<SurfaceBuffer>& frontBuffer(mBuffers[1-mBackbufferIndex]);
if (!copyback.isEmpty() && frontBuffer!=0) {
// copy front to back
copyBlt(backBuffer, frontBuffer.get(), copyback);
}
}
setDirtyRegion(newDirtyRegion);
Rect lockBounds(backBuffer->width, backBuffer->height);
if (dirty) {
lockBounds = dirty->bounds();
}
buffer_handle_t handle;
backBuffer->getHandle(backBuffer, &handle);
status_t res = BufferMapper::get().lock(handle,
GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
lockBounds);
LOGW_IF(res, "failed locking buffer %d (%p)",
mBackbufferIndex, handle);
setSwapRectangle(lockBounds);
}
}
return err;
}
status_t Surface::unlockAndPost()
{
// FIXME: needs some locking here
if (mLockedBuffer == 0)
return BAD_VALUE;
buffer_handle_t handle;
mLockedBuffer->getHandle(mLockedBuffer, &handle);
status_t res = BufferMapper::get().unlock(handle);
LOGW_IF(res, "failed unlocking buffer %d (%p)",
mBackbufferIndex, handle);
const Rect dirty(dirtyRegion().bounds());
setSwapRectangle(dirty);
status_t err = queueBuffer(mLockedBuffer);
mLockedBuffer->common.decRef(&mLockedBuffer->common);
mLockedBuffer = 0;
return err;
}
void Surface::_send_dirty_region(
layer_cblk_t* lcblk, const Region& dirty)
{
const int32_t index = (lcblk->flags & eBufferIndex) >> eBufferIndexShift;
flat_region_t* flat_region = lcblk->region + index;
status_t err = dirty.write(flat_region, sizeof(flat_region_t));
if (err < NO_ERROR) {
// region doesn't fit, use the bounds
const Region reg(dirty.bounds());
reg.write(flat_region, sizeof(flat_region_t));
}
}
Region Surface::dirtyRegion() const {
return mDirtyRegion;
}
void Surface::setDirtyRegion(const Region& region) const {
mDirtyRegion = region;
}
const Rect& Surface::swapRectangle() const {
return mSwapRectangle;
}
void Surface::setSwapRectangle(const Rect& r) {
mSwapRectangle = r;
}
status_t Surface::getBufferLocked(int index)
{
status_t err = NO_MEMORY;
sp<SurfaceBuffer> buffer = mSurface->getBuffer();
LOGE_IF(buffer==0, "ISurface::getBuffer() returned NULL");
if (buffer != 0) {
sp<SurfaceBuffer>& currentBuffer(mBuffers[index]);
if (currentBuffer != 0) {
BufferMapper::get().unmap(currentBuffer->getHandle(), this);
currentBuffer.clear();
}
err = BufferMapper::get().map(buffer->getHandle(), &buffer->bits, this);
LOGW_IF(err, "map(...) failed %d (%s)", err, strerror(-err));
if (err == NO_ERROR) {
currentBuffer = buffer;
}
}
return err;
}
}; // namespace android