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replicant-frameworks_native/libs/ui/Surface.cpp

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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 "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 <binder/IPCThreadState.h>
#include <binder/IMemory.h>
#include <utils/Log.h>
#include <ui/DisplayInfo.h>
#include <ui/BufferMapper.h>
#include <ui/ISurface.h>
#include <ui/Surface.h>
#include <ui/SurfaceComposerClient.h>
#include <ui/Rect.h>
#include <pixelflinger/pixelflinger.h>
#include <private/ui/SharedState.h>
#include <private/ui/LayerState.h>
#include <private/ui/SurfaceBuffer.h>
namespace android {
// ============================================================================
// SurfaceBuffer
// ============================================================================
SurfaceBuffer::SurfaceBuffer()
: BASE(), mOwner(false), mBufferMapper(BufferMapper::get())
{
width =
height =
stride =
format =
usage = 0;
handle = NULL;
}
SurfaceBuffer::SurfaceBuffer(const Parcel& data)
: BASE(), mOwner(true), mBufferMapper(BufferMapper::get())
{
// 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();
}
SurfaceBuffer::~SurfaceBuffer()
{
if (handle && mOwner) {
native_handle_close(handle);
native_handle_delete(const_cast<native_handle*>(handle));
}
}
status_t SurfaceBuffer::lock(uint32_t usage, void** vaddr)
{
const Rect lockBounds(width, height);
status_t res = lock(usage, lockBounds, vaddr);
return res;
}
status_t SurfaceBuffer::lock(uint32_t usage, const Rect& rect, void** vaddr)
{
if (rect.left < 0 || rect.right > this->width ||
rect.top < 0 || rect.bottom > this->height) {
LOGE("locking pixels (%d,%d,%d,%d) outside of buffer (w=%d, h=%d)",
rect.left, rect.top, rect.right, rect.bottom,
this->width, this->height);
return BAD_VALUE;
}
status_t res = getBufferMapper().lock(handle, usage, rect, vaddr);
return res;
}
status_t SurfaceBuffer::unlock()
{
status_t res = getBufferMapper().unlock(handle);
return res;
}
status_t SurfaceBuffer::writeToParcel(Parcel* reply,
android_native_buffer_t const* buffer)
{
reply->writeInt32(buffer->width);
reply->writeInt32(buffer->height);
reply->writeInt32(buffer->stride);
reply->writeInt32(buffer->format);
reply->writeInt32(buffer->usage);
reply->writeNativeHandle(buffer->handle);
return NO_ERROR;
}
// ----------------------------------------------------------------------
static status_t copyBlt(
const sp<SurfaceBuffer>& dst,
const sp<SurfaceBuffer>& src,
const Region& reg)
{
status_t err;
uint8_t const * src_bits = NULL;
err = src->lock(GRALLOC_USAGE_SW_READ_OFTEN, reg.bounds(), (void**)&src_bits);
LOGE_IF(err, "error locking src buffer %s", strerror(-err));
uint8_t* dst_bits = NULL;
err = dst->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, reg.bounds(), (void**)&dst_bits);
LOGE_IF(err, "error locking dst buffer %s", strerror(-err));
Region::const_iterator head(reg.begin());
Region::const_iterator tail(reg.end());
if (head != tail && src_bits && dst_bits) {
// NOTE: dst and src must be the same format
const size_t bpp = bytesPerPixel(src->format);
const size_t dbpr = dst->stride * bpp;
const size_t sbpr = src->stride * bpp;
while (head != tail) {
const Rect& r(*head++);
ssize_t h = r.height();
if (h <= 0) continue;
size_t size = r.width() * bpp;
uint8_t const * s = src_bits + (r.left + src->stride * r.top) * bpp;
uint8_t * d = 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);
}
}
if (src_bits)
src->unlock();
if (dst_bits)
dst->unlock();
return err;
}
// ============================================================================
// 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)
: mClient(client), mSurface(surface),
mToken(data.token), mIdentity(data.identity),
mWidth(w), mHeight(h), mFormat(format), mFlags(flags)
{
}
SurfaceControl::~SurfaceControl()
{
destroy();
}
void SurfaceControl::destroy()
{
if (isValid()) {
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;
uint32_t width = 0;
uint32_t height = 0;
sp<SurfaceComposerClient> client;
sp<ISurface> sur;
if (SurfaceControl::isValid(control)) {
token = control->mToken;
identity = control->mIdentity;
client = control->mClient;
sur = control->mSurface;
width = control->mWidth;
height = control->mHeight;
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(width);
parcel->writeInt32(height);
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),
mWidth(surface->mWidth), mHeight(surface->mHeight),
mFormat(surface->mFormat), mFlags(surface->mFlags),
mBufferMapper(BufferMapper::get())
{
init();
}
Surface::Surface(const Parcel& parcel)
: mBufferMapper(BufferMapper::get())
{
sp<IBinder> clientBinder = parcel.readStrongBinder();
mSurface = interface_cast<ISurface>(parcel.readStrongBinder());
mToken = parcel.readInt32();
mIdentity = parcel.readInt32();
mWidth = parcel.readInt32();
mHeight = parcel.readInt32();
mFormat = parcel.readInt32();
mFlags = parcel.readInt32();
if (clientBinder != NULL)
mClient = SurfaceComposerClient::clientForConnection(clientBinder);
init();
}
void Surface::init()
{
android_native_window_t::setSwapInterval = setSwapInterval;
android_native_window_t::dequeueBuffer = dequeueBuffer;
android_native_window_t::lockBuffer = lockBuffer;
android_native_window_t::queueBuffer = queueBuffer;
android_native_window_t::query = query;
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) {
getBufferMapper().unregisterBuffer(mBuffers[i]->handle);
}
}
// 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::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::query(android_native_window_t* window,
int what, int* value)
{
Surface* self = getSelf(window);
return self->query(what, value);
}
// ----------------------------------------------------------------------------
status_t Surface::dequeueBuffer(sp<SurfaceBuffer>* buffer)
{
android_native_buffer_t* out;
status_t err = dequeueBuffer(&out);
*buffer = SurfaceBuffer::getSelf(out);
// reset the width/height with the what we get from the buffer
mWidth = uint32_t(out->width);
mHeight = uint32_t(out->height);
return err;
}
status_t Surface::lockBuffer(const sp<SurfaceBuffer>& buffer)
{
return lockBuffer(buffer.get());
}
status_t Surface::queueBuffer(const sp<SurfaceBuffer>& buffer)
{
return queueBuffer(buffer.get());
}
// ----------------------------------------------------------------------------
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) {
err = getBufferLocked(backIdx);
}
if (err == NO_ERROR) {
const sp<SurfaceBuffer>& backBuffer(mBuffers[backIdx]);
mDirtyRegion.set(backBuffer->width, backBuffer->height);
*buffer = backBuffer.get();
}
return err;
}
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;
if (mSwapRectangle.isValid()) {
mDirtyRegion.set(mSwapRectangle);
}
// transmit the dirty region
SurfaceID index(mToken);
layer_cblk_t* const lcblk = &(cblk->layers[index]);
_send_dirty_region(lcblk, mDirtyRegion);
uint32_t newstate = cblk->unlock_layer_and_post(size_t(index));
if (!(newstate & eNextFlipPending))
mClient->signalServer();
return NO_ERROR;
}
int Surface::query(int what, int* value)
{
switch (what) {
case NATIVE_WINDOW_WIDTH:
*value = int(mWidth);
return NO_ERROR;
case NATIVE_WINDOW_HEIGHT:
*value = int(mHeight);
return NO_ERROR;
}
return BAD_VALUE;
}
// ----------------------------------------------------------------------------
status_t Surface::lock(SurfaceInfo* info, bool blocking) {
return Surface::lock(info, NULL, blocking);
}
status_t Surface::lock(SurfaceInfo* other, Region* dirtyIn, bool blocking)
{
// FIXME: needs some locking here
sp<SurfaceBuffer> backBuffer;
status_t err = dequeueBuffer(&backBuffer);
if (err == NO_ERROR) {
err = lockBuffer(backBuffer);
if (err == NO_ERROR) {
// we handle copy-back here...
const Rect bounds(backBuffer->width, backBuffer->height);
Region scratch(bounds);
Region& newDirtyRegion(dirtyIn ? *dirtyIn : scratch);
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);
} else {
newDirtyRegion.andSelf(bounds);
const sp<SurfaceBuffer>& frontBuffer(mBuffers[1-mBackbufferIndex]);
if (backBuffer->width == frontBuffer->width &&
backBuffer->height == frontBuffer->height &&
!(lcblk->flags & eNoCopyBack))
{
const Region copyback(mOldDirtyRegion.subtract(newDirtyRegion));
if (!copyback.isEmpty() && frontBuffer!=0) {
// copy front to back
copyBlt(backBuffer, frontBuffer, copyback);
}
}
}
mDirtyRegion = newDirtyRegion;
mOldDirtyRegion = newDirtyRegion;
void* vaddr;
status_t res = backBuffer->lock(
GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
newDirtyRegion.bounds(), &vaddr);
LOGW_IF(res, "failed locking buffer %d (%p)",
mBackbufferIndex, backBuffer->handle);
mLockedBuffer = backBuffer;
other->w = backBuffer->width;
other->h = backBuffer->height;
other->s = backBuffer->stride;
other->usage = backBuffer->usage;
other->format = backBuffer->format;
other->bits = vaddr;
}
}
return err;
}
status_t Surface::unlockAndPost()
{
// FIXME: needs some locking here
if (mLockedBuffer == 0)
return BAD_VALUE;
status_t res = mLockedBuffer->unlock();
LOGW_IF(res, "failed unlocking buffer %d (%p)",
mBackbufferIndex, mLockedBuffer->handle);
status_t err = queueBuffer(mLockedBuffer);
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));
}
}
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) {
getBufferMapper().unregisterBuffer(currentBuffer->handle);
currentBuffer.clear();
}
err = getBufferMapper().registerBuffer(buffer->handle);
LOGW_IF(err, "registerBuffer(...) failed %d (%s)", err, strerror(-err));
if (err == NO_ERROR) {
currentBuffer = buffer;
}
}
return err;
}
}; // namespace android
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