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replicant-frameworks_native/services/surfaceflinger/LayerBase.cpp
Mathias Agopian 99ce5cdeb3 separate transactions from updates 
with this changes, SF transactions are handled as soon as possible
but do not trigger updates. the update is delayed until the next
vsync.

this allows us to work much better without requiring triple-buffering.

Change-Id: I1fa10794d0cf742129f0877698b7b1e1f2ec7401
2012-02-01 20:43:06 -08:00

578 lines
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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.
*/
#include <stdlib.h>
#include <stdint.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <utils/Log.h>
#include <binder/IPCThreadState.h>
#include <binder/IServiceManager.h>
#include <GLES/gl.h>
#include <GLES/glext.h>
#include <hardware/hardware.h>
#include "clz.h"
#include "LayerBase.h"
#include "SurfaceFlinger.h"
#include "DisplayHardware/DisplayHardware.h"
namespace android {
// ---------------------------------------------------------------------------
int32_t LayerBase::sSequence = 1;
LayerBase::LayerBase(SurfaceFlinger* flinger, DisplayID display)
: dpy(display), contentDirty(false),
sequence(uint32_t(android_atomic_inc(&sSequence))),
mFlinger(flinger), mFiltering(false),
mNeedsFiltering(false), mInOverlay(false),
mOrientation(0),
mPlaneOrientation(0),
mTransactionFlags(0),
mPremultipliedAlpha(true), mName("unnamed"), mDebug(false)
{
const DisplayHardware& hw(flinger->graphicPlane(0).displayHardware());
mFlags = hw.getFlags();
}
LayerBase::~LayerBase()
{
}
void LayerBase::setName(const String8& name) {
mName = name;
}
String8 LayerBase::getName() const {
return mName;
}
const GraphicPlane& LayerBase::graphicPlane(int dpy) const
{
return mFlinger->graphicPlane(dpy);
}
GraphicPlane& LayerBase::graphicPlane(int dpy)
{
return mFlinger->graphicPlane(dpy);
}
void LayerBase::initStates(uint32_t w, uint32_t h, uint32_t flags)
{
uint32_t layerFlags = 0;
if (flags & ISurfaceComposer::eHidden)
layerFlags = ISurfaceComposer::eLayerHidden;
if (flags & ISurfaceComposer::eNonPremultiplied)
mPremultipliedAlpha = false;
mCurrentState.z = 0;
mCurrentState.w = w;
mCurrentState.h = h;
mCurrentState.requested_w = w;
mCurrentState.requested_h = h;
mCurrentState.alpha = 0xFF;
mCurrentState.flags = layerFlags;
mCurrentState.sequence = 0;
mCurrentState.transform.set(0, 0);
// drawing state & current state are identical
mDrawingState = mCurrentState;
}
void LayerBase::commitTransaction() {
mDrawingState = mCurrentState;
}
void LayerBase::forceVisibilityTransaction() {
// this can be called without SurfaceFlinger.mStateLock, but if we
// can atomically increment the sequence number, it doesn't matter.
android_atomic_inc(&mCurrentState.sequence);
requestTransaction();
}
bool LayerBase::requestTransaction() {
int32_t old = setTransactionFlags(eTransactionNeeded);
return ((old & eTransactionNeeded) == 0);
}
uint32_t LayerBase::getTransactionFlags(uint32_t flags) {
return android_atomic_and(~flags, &mTransactionFlags) & flags;
}
uint32_t LayerBase::setTransactionFlags(uint32_t flags) {
return android_atomic_or(flags, &mTransactionFlags);
}
bool LayerBase::setPosition(float x, float y) {
if (mCurrentState.transform.tx() == x && mCurrentState.transform.ty() == y)
return false;
mCurrentState.sequence++;
mCurrentState.transform.set(x, y);
requestTransaction();
return true;
}
bool LayerBase::setLayer(uint32_t z) {
if (mCurrentState.z == z)
return false;
mCurrentState.sequence++;
mCurrentState.z = z;
requestTransaction();
return true;
}
bool LayerBase::setSize(uint32_t w, uint32_t h) {
if (mCurrentState.requested_w == w && mCurrentState.requested_h == h)
return false;
mCurrentState.requested_w = w;
mCurrentState.requested_h = h;
requestTransaction();
return true;
}
bool LayerBase::setAlpha(uint8_t alpha) {
if (mCurrentState.alpha == alpha)
return false;
mCurrentState.sequence++;
mCurrentState.alpha = alpha;
requestTransaction();
return true;
}
bool LayerBase::setMatrix(const layer_state_t::matrix22_t& matrix) {
mCurrentState.sequence++;
mCurrentState.transform.set(
matrix.dsdx, matrix.dsdy, matrix.dtdx, matrix.dtdy);
requestTransaction();
return true;
}
bool LayerBase::setTransparentRegionHint(const Region& transparent) {
mCurrentState.sequence++;
mCurrentState.transparentRegion = transparent;
requestTransaction();
return true;
}
bool LayerBase::setFlags(uint8_t flags, uint8_t mask) {
const uint32_t newFlags = (mCurrentState.flags & ~mask) | (flags & mask);
if (mCurrentState.flags == newFlags)
return false;
mCurrentState.sequence++;
mCurrentState.flags = newFlags;
requestTransaction();
return true;
}
Rect LayerBase::visibleBounds() const
{
return mTransformedBounds;
}
void LayerBase::setVisibleRegion(const Region& visibleRegion) {
// always called from main thread
visibleRegionScreen = visibleRegion;
}
void LayerBase::setCoveredRegion(const Region& coveredRegion) {
// always called from main thread
coveredRegionScreen = coveredRegion;
}
uint32_t LayerBase::doTransaction(uint32_t flags)
{
const Layer::State& front(drawingState());
const Layer::State& temp(currentState());
if ((front.requested_w != temp.requested_w) ||
(front.requested_h != temp.requested_h)) {
// resize the layer, set the physical size to the requested size
Layer::State& editTemp(currentState());
editTemp.w = temp.requested_w;
editTemp.h = temp.requested_h;
}
if ((front.w != temp.w) || (front.h != temp.h)) {
// invalidate and recompute the visible regions if needed
flags |= Layer::eVisibleRegion;
}
if (temp.sequence != front.sequence) {
// invalidate and recompute the visible regions if needed
flags |= eVisibleRegion;
this->contentDirty = true;
// we may use linear filtering, if the matrix scales us
const uint8_t type = temp.transform.getType();
mNeedsFiltering = (!temp.transform.preserveRects() ||
(type >= Transform::SCALE));
}
// Commit the transaction
commitTransaction();
return flags;
}
void LayerBase::validateVisibility(const Transform& planeTransform)
{
const Layer::State& s(drawingState());
const Transform tr(planeTransform * s.transform);
const bool transformed = tr.transformed();
const DisplayHardware& hw(graphicPlane(0).displayHardware());
const uint32_t hw_h = hw.getHeight();
uint32_t w = s.w;
uint32_t h = s.h;
tr.transform(mVertices[0], 0, 0);
tr.transform(mVertices[1], 0, h);
tr.transform(mVertices[2], w, h);
tr.transform(mVertices[3], w, 0);
for (size_t i=0 ; i<4 ; i++)
mVertices[i][1] = hw_h - mVertices[i][1];
if (CC_UNLIKELY(transformed)) {
// NOTE: here we could also punt if we have too many rectangles
// in the transparent region
if (tr.preserveRects()) {
// transform the transparent region
transparentRegionScreen = tr.transform(s.transparentRegion);
} else {
// transformation too complex, can't do the transparent region
// optimization.
transparentRegionScreen.clear();
}
} else {
transparentRegionScreen = s.transparentRegion;
}
// cache a few things...
mOrientation = tr.getOrientation();
mPlaneOrientation = planeTransform.getOrientation();
mTransform = tr;
mTransformedBounds = tr.makeBounds(w, h);
}
void LayerBase::lockPageFlip(bool& recomputeVisibleRegions) {
}
void LayerBase::unlockPageFlip(
const Transform& planeTransform, Region& outDirtyRegion) {
}
void LayerBase::drawRegion(const Region& reg) const
{
Region::const_iterator it = reg.begin();
Region::const_iterator const end = reg.end();
if (it != end) {
Rect r;
const DisplayHardware& hw(graphicPlane(0).displayHardware());
const int32_t fbWidth = hw.getWidth();
const int32_t fbHeight = hw.getHeight();
const GLshort vertices[][2] = { { 0, 0 }, { fbWidth, 0 },
{ fbWidth, fbHeight }, { 0, fbHeight } };
glVertexPointer(2, GL_SHORT, 0, vertices);
while (it != end) {
const Rect& r = *it++;
const GLint sy = fbHeight - (r.top + r.height());
glScissor(r.left, sy, r.width(), r.height());
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
}
}
void LayerBase::setGeometry(hwc_layer_t* hwcl)
{
hwcl->compositionType = HWC_FRAMEBUFFER;
hwcl->hints = 0;
hwcl->flags = HWC_SKIP_LAYER;
hwcl->transform = 0;
hwcl->blending = HWC_BLENDING_NONE;
// this gives us only the "orientation" component of the transform
const State& s(drawingState());
const uint32_t finalTransform = s.transform.getOrientation();
// we can only handle simple transformation
if (finalTransform & Transform::ROT_INVALID) {
hwcl->flags = HWC_SKIP_LAYER;
} else {
hwcl->transform = finalTransform;
}
if (!isOpaque()) {
hwcl->blending = mPremultipliedAlpha ?
HWC_BLENDING_PREMULT : HWC_BLENDING_COVERAGE;
}
// scaling is already applied in mTransformedBounds
hwcl->displayFrame.left = mTransformedBounds.left;
hwcl->displayFrame.top = mTransformedBounds.top;
hwcl->displayFrame.right = mTransformedBounds.right;
hwcl->displayFrame.bottom = mTransformedBounds.bottom;
hwcl->visibleRegionScreen.rects =
reinterpret_cast<hwc_rect_t const *>(
visibleRegionScreen.getArray(
&hwcl->visibleRegionScreen.numRects));
hwcl->sourceCrop.left = 0;
hwcl->sourceCrop.top = 0;
hwcl->sourceCrop.right = mTransformedBounds.width();
hwcl->sourceCrop.bottom = mTransformedBounds.height();
}
void LayerBase::setPerFrameData(hwc_layer_t* hwcl) {
hwcl->compositionType = HWC_FRAMEBUFFER;
hwcl->handle = NULL;
}
void LayerBase::setOverlay(bool inOverlay) {
mInOverlay = inOverlay;
}
bool LayerBase::isOverlay() const {
return mInOverlay;
}
void LayerBase::setFiltering(bool filtering)
{
mFiltering = filtering;
}
bool LayerBase::getFiltering() const
{
return mFiltering;
}
void LayerBase::draw(const Region& clip) const
{
// reset GL state
glEnable(GL_SCISSOR_TEST);
onDraw(clip);
}
void LayerBase::drawForSreenShot()
{
const DisplayHardware& hw(graphicPlane(0).displayHardware());
setFiltering(true);
onDraw( Region(hw.bounds()) );
setFiltering(false);
}
void LayerBase::clearWithOpenGL(const Region& clip, GLclampf red,
GLclampf green, GLclampf blue,
GLclampf alpha) const
{
const DisplayHardware& hw(graphicPlane(0).displayHardware());
const uint32_t fbHeight = hw.getHeight();
glColor4f(red,green,blue,alpha);
glDisable(GL_TEXTURE_EXTERNAL_OES);
glDisable(GL_TEXTURE_2D);
glDisable(GL_BLEND);
Region::const_iterator it = clip.begin();
Region::const_iterator const end = clip.end();
glEnable(GL_SCISSOR_TEST);
glVertexPointer(2, GL_FLOAT, 0, mVertices);
while (it != end) {
const Rect& r = *it++;
const GLint sy = fbHeight - (r.top + r.height());
glScissor(r.left, sy, r.width(), r.height());
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
}
void LayerBase::clearWithOpenGL(const Region& clip) const
{
clearWithOpenGL(clip,0,0,0,0);
}
void LayerBase::drawWithOpenGL(const Region& clip) const
{
const DisplayHardware& hw(graphicPlane(0).displayHardware());
const uint32_t fbHeight = hw.getHeight();
const State& s(drawingState());
GLenum src = mPremultipliedAlpha ? GL_ONE : GL_SRC_ALPHA;
if (CC_UNLIKELY(s.alpha < 0xFF)) {
const GLfloat alpha = s.alpha * (1.0f/255.0f);
if (mPremultipliedAlpha) {
glColor4f(alpha, alpha, alpha, alpha);
} else {
glColor4f(1, 1, 1, alpha);
}
glEnable(GL_BLEND);
glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA);
glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
} else {
glColor4f(1, 1, 1, 1);
glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
if (!isOpaque()) {
glEnable(GL_BLEND);
glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA);
} else {
glDisable(GL_BLEND);
}
}
struct TexCoords {
GLfloat u;
GLfloat v;
};
TexCoords texCoords[4];
texCoords[0].u = 0;
texCoords[0].v = 1;
texCoords[1].u = 0;
texCoords[1].v = 0;
texCoords[2].u = 1;
texCoords[2].v = 0;
texCoords[3].u = 1;
texCoords[3].v = 1;
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, mVertices);
glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
Region::const_iterator it = clip.begin();
Region::const_iterator const end = clip.end();
while (it != end) {
const Rect& r = *it++;
const GLint sy = fbHeight - (r.top + r.height());
glScissor(r.left, sy, r.width(), r.height());
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisable(GL_BLEND);
}
void LayerBase::dump(String8& result, char* buffer, size_t SIZE) const
{
const Layer::State& s(drawingState());
s.transparentRegion.dump(result, "transparentRegion");
transparentRegionScreen.dump(result, "transparentRegionScreen");
visibleRegionScreen.dump(result, "visibleRegionScreen");
snprintf(buffer, SIZE,
"+ %s %p (%s)\n"
" "
"z=%9d, pos=(%g,%g), size=(%4d,%4d), "
"isOpaque=%1d, needsDithering=%1d, invalidate=%1d, "
"alpha=0x%02x, flags=0x%08x, tr=[%.2f, %.2f][%.2f, %.2f]\n",
getTypeId(), this, getName().string(),
s.z, s.transform.tx(), s.transform.ty(), s.w, s.h,
isOpaque(), needsDithering(), contentDirty,
s.alpha, s.flags,
s.transform[0][0], s.transform[0][1],
s.transform[1][0], s.transform[1][1]);
result.append(buffer);
}
void LayerBase::shortDump(String8& result, char* scratch, size_t size) const {
LayerBase::dump(result, scratch, size);
}
void LayerBase::dumpStats(String8& result, char* scratch, size_t SIZE) const {
}
void LayerBase::clearStats() {
}
// ---------------------------------------------------------------------------
int32_t LayerBaseClient::sIdentity = 1;
LayerBaseClient::LayerBaseClient(SurfaceFlinger* flinger, DisplayID display,
const sp<Client>& client)
: LayerBase(flinger, display),
mHasSurface(false),
mClientRef(client),
mIdentity(uint32_t(android_atomic_inc(&sIdentity)))
{
}
LayerBaseClient::~LayerBaseClient()
{
sp<Client> c(mClientRef.promote());
if (c != 0) {
c->detachLayer(this);
}
}
sp<ISurface> LayerBaseClient::createSurface()
{
class BSurface : public BnSurface, public LayerCleaner {
virtual sp<ISurfaceTexture> getSurfaceTexture() const { return 0; }
public:
BSurface(const sp<SurfaceFlinger>& flinger,
const sp<LayerBaseClient>& layer)
: LayerCleaner(flinger, layer) { }
};
sp<ISurface> sur(new BSurface(mFlinger, this));
return sur;
}
sp<ISurface> LayerBaseClient::getSurface()
{
sp<ISurface> s;
Mutex::Autolock _l(mLock);
LOG_ALWAYS_FATAL_IF(mHasSurface,
"LayerBaseClient::getSurface() has already been called");
mHasSurface = true;
s = createSurface();
mClientSurfaceBinder = s->asBinder();
return s;
}
wp<IBinder> LayerBaseClient::getSurfaceBinder() const {
return mClientSurfaceBinder;
}
wp<IBinder> LayerBaseClient::getSurfaceTextureBinder() const {
return 0;
}
void LayerBaseClient::dump(String8& result, char* buffer, size_t SIZE) const
{
LayerBase::dump(result, buffer, SIZE);
sp<Client> client(mClientRef.promote());
snprintf(buffer, SIZE,
" client=%p, identity=%u\n",
client.get(), getIdentity());
result.append(buffer);
}
void LayerBaseClient::shortDump(String8& result, char* scratch, size_t size) const
{
LayerBaseClient::dump(result, scratch, size);
}
// ---------------------------------------------------------------------------
LayerBaseClient::LayerCleaner::LayerCleaner(const sp<SurfaceFlinger>& flinger,
const sp<LayerBaseClient>& layer)
: mFlinger(flinger), mLayer(layer) {
}
LayerBaseClient::LayerCleaner::~LayerCleaner() {
// destroy client resources
mFlinger->destroySurface(mLayer);
}
// ---------------------------------------------------------------------------
}; // namespace android
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