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10fbdb6059
replicant-frameworks_native/services/surfaceflinger/DisplayHardware.cpp
Colin Cross 10fbdb6059 surfaceflinger: call into hardware composer to blank screen 
Call into the new HWC blank operation to blank or unblank the screen.
Legacy systems may have already blanked the screen via early suspend,
and can choose to not implement the blank operation in their hardware
composer implementation.

Change-Id: Ib403c8c0e36367a2cfef3e1d124872fcfeb9e7cb
2012-07-13 15:48:50 -07:00

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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.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <cutils/properties.h>
#include <utils/RefBase.h>
#include <utils/Log.h>
#include <ui/PixelFormat.h>
#include <GLES/gl.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <hardware/gralloc.h>
#include "DisplayHardware/FramebufferSurface.h"
#include "DisplayHardware/DisplayHardwareBase.h"
#include "DisplayHardware/HWComposer.h"
#include "DisplayHardware.h"
#include "GLExtensions.h"
#include "SurfaceFlinger.h"
using namespace android;
static __attribute__((noinline))
void checkGLErrors()
{
do {
// there could be more than one error flag
GLenum error = glGetError();
if (error == GL_NO_ERROR)
break;
ALOGE("GL error 0x%04x", int(error));
} while(true);
}
static __attribute__((noinline))
void checkEGLErrors(const char* token)
{
struct EGLUtils {
static const char *strerror(EGLint err) {
switch (err){
case EGL_SUCCESS: return "EGL_SUCCESS";
case EGL_NOT_INITIALIZED: return "EGL_NOT_INITIALIZED";
case EGL_BAD_ACCESS: return "EGL_BAD_ACCESS";
case EGL_BAD_ALLOC: return "EGL_BAD_ALLOC";
case EGL_BAD_ATTRIBUTE: return "EGL_BAD_ATTRIBUTE";
case EGL_BAD_CONFIG: return "EGL_BAD_CONFIG";
case EGL_BAD_CONTEXT: return "EGL_BAD_CONTEXT";
case EGL_BAD_CURRENT_SURFACE: return "EGL_BAD_CURRENT_SURFACE";
case EGL_BAD_DISPLAY: return "EGL_BAD_DISPLAY";
case EGL_BAD_MATCH: return "EGL_BAD_MATCH";
case EGL_BAD_NATIVE_PIXMAP: return "EGL_BAD_NATIVE_PIXMAP";
case EGL_BAD_NATIVE_WINDOW: return "EGL_BAD_NATIVE_WINDOW";
case EGL_BAD_PARAMETER: return "EGL_BAD_PARAMETER";
case EGL_BAD_SURFACE: return "EGL_BAD_SURFACE";
case EGL_CONTEXT_LOST: return "EGL_CONTEXT_LOST";
default: return "UNKNOWN";
}
}
};
EGLint error = eglGetError();
if (error && error != EGL_SUCCESS) {
ALOGE("%s: EGL error 0x%04x (%s)",
token, int(error), EGLUtils::strerror(error));
}
}
/*
* Initialize the display to the specified values.
*
*/
DisplayHardware::DisplayHardware(
const sp<SurfaceFlinger>& flinger,
uint32_t dpy)
: DisplayHardwareBase(flinger, dpy),
mFlinger(flinger), mFlags(0), mHwc(0)
{
init(dpy);
}
DisplayHardware::~DisplayHardware()
{
fini();
}
float DisplayHardware::getDpiX() const { return mDpiX; }
float DisplayHardware::getDpiY() const { return mDpiY; }
float DisplayHardware::getDensity() const { return mDensity; }
float DisplayHardware::getRefreshRate() const { return mRefreshRate; }
int DisplayHardware::getWidth() const { return mDisplayWidth; }
int DisplayHardware::getHeight() const { return mDisplayHeight; }
PixelFormat DisplayHardware::getFormat() const { return mFormat; }
uint32_t DisplayHardware::getMaxTextureSize() const { return mMaxTextureSize; }
uint32_t DisplayHardware::getMaxViewportDims() const {
return mMaxViewportDims[0] < mMaxViewportDims[1] ?
mMaxViewportDims[0] : mMaxViewportDims[1];
}
static status_t selectConfigForPixelFormat(
EGLDisplay dpy,
EGLint const* attrs,
PixelFormat format,
EGLConfig* outConfig)
{
EGLConfig config = NULL;
EGLint numConfigs = -1, n=0;
eglGetConfigs(dpy, NULL, 0, &numConfigs);
EGLConfig* const configs = new EGLConfig[numConfigs];
eglChooseConfig(dpy, attrs, configs, numConfigs, &n);
for (int i=0 ; i<n ; i++) {
EGLint nativeVisualId = 0;
eglGetConfigAttrib(dpy, configs[i], EGL_NATIVE_VISUAL_ID, &nativeVisualId);
if (nativeVisualId>0 && format == nativeVisualId) {
*outConfig = configs[i];
delete [] configs;
return NO_ERROR;
}
}
delete [] configs;
return NAME_NOT_FOUND;
}
void DisplayHardware::init(uint32_t dpy)
{
mNativeWindow = new FramebufferSurface();
framebuffer_device_t const * fbDev = mNativeWindow->getDevice();
if (!fbDev) {
ALOGE("Display subsystem failed to initialize. check logs. exiting...");
exit(0);
}
int format;
ANativeWindow const * const window = mNativeWindow.get();
window->query(window, NATIVE_WINDOW_FORMAT, &format);
mDpiX = mNativeWindow->xdpi;
mDpiY = mNativeWindow->ydpi;
mRefreshRate = fbDev->fps;
if (mDpiX == 0 || mDpiY == 0) {
ALOGE("invalid screen resolution from fb HAL (xdpi=%f, ydpi=%f), "
"defaulting to 160 dpi", mDpiX, mDpiY);
mDpiX = mDpiY = 160;
}
class Density {
static int getDensityFromProperty(char const* propName) {
char property[PROPERTY_VALUE_MAX];
int density = 0;
if (property_get(propName, property, NULL) > 0) {
density = atoi(property);
}
return density;
}
public:
static int getEmuDensity() {
return getDensityFromProperty("qemu.sf.lcd_density"); }
static int getBuildDensity() {
return getDensityFromProperty("ro.sf.lcd_density"); }
};
// The density of the device is provided by a build property
mDensity = Density::getBuildDensity() / 160.0f;
if (mDensity == 0) {
// the build doesn't provide a density -- this is wrong!
// use xdpi instead
ALOGE("ro.sf.lcd_density must be defined as a build property");
mDensity = mDpiX / 160.0f;
}
if (Density::getEmuDensity()) {
// if "qemu.sf.lcd_density" is specified, it overrides everything
mDpiX = mDpiY = mDensity = Density::getEmuDensity();
mDensity /= 160.0f;
}
/* FIXME: this is a temporary HACK until we are able to report the refresh rate
* properly from the HAL. The WindowManagerService now relies on this value.
*/
#ifndef REFRESH_RATE
mRefreshRate = fbDev->fps;
#else
mRefreshRate = REFRESH_RATE;
#warning "refresh rate set via makefile to REFRESH_RATE"
#endif
mRefreshPeriod = nsecs_t(1e9 / mRefreshRate);
EGLint w, h, dummy;
EGLint numConfigs=0;
EGLSurface surface;
EGLContext context;
EGLBoolean result;
status_t err;
// initialize EGL
EGLint attribs[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RECORDABLE_ANDROID, EGL_TRUE,
EGL_NONE
};
// TODO: all the extensions below should be queried through
// eglGetProcAddress().
EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
eglInitialize(display, NULL, NULL);
eglGetConfigs(display, NULL, 0, &numConfigs);
EGLConfig config = NULL;
err = selectConfigForPixelFormat(display, attribs, format, &config);
if (err) {
// maybe we failed because of EGL_RECORDABLE_ANDROID
ALOGW("couldn't find an EGLConfig with EGL_RECORDABLE_ANDROID");
attribs[2] = EGL_NONE;
err = selectConfigForPixelFormat(display, attribs, format, &config);
}
ALOGE_IF(err, "couldn't find an EGLConfig matching the screen format");
EGLint r,g,b,a;
eglGetConfigAttrib(display, config, EGL_RED_SIZE, &r);
eglGetConfigAttrib(display, config, EGL_GREEN_SIZE, &g);
eglGetConfigAttrib(display, config, EGL_BLUE_SIZE, &b);
eglGetConfigAttrib(display, config, EGL_ALPHA_SIZE, &a);
if (mNativeWindow->isUpdateOnDemand()) {
mFlags |= PARTIAL_UPDATES;
}
if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy) == EGL_TRUE) {
if (dummy == EGL_SLOW_CONFIG)
mFlags |= SLOW_CONFIG;
}
/*
* Create our main surface
*/
surface = eglCreateWindowSurface(display, config, mNativeWindow.get(), NULL);
eglQuerySurface(display, surface, EGL_WIDTH, &mDisplayWidth);
eglQuerySurface(display, surface, EGL_HEIGHT, &mDisplayHeight);
if (mFlags & PARTIAL_UPDATES) {
// if we have partial updates, we definitely don't need to
// preserve the backbuffer, which may be costly.
eglSurfaceAttrib(display, surface,
EGL_SWAP_BEHAVIOR, EGL_BUFFER_DESTROYED);
}
/*
* Create our OpenGL ES context
*/
EGLint contextAttributes[] = {
#ifdef EGL_IMG_context_priority
#ifdef HAS_CONTEXT_PRIORITY
#warning "using EGL_IMG_context_priority"
EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG,
#endif
#endif
EGL_NONE, EGL_NONE
};
context = eglCreateContext(display, config, NULL, contextAttributes);
mDisplay = display;
mConfig = config;
mSurface = surface;
mContext = context;
mFormat = fbDev->format;
mPageFlipCount = 0;
/*
* Gather OpenGL ES extensions
*/
result = eglMakeCurrent(display, surface, surface, context);
if (!result) {
ALOGE("Couldn't create a working GLES context. check logs. exiting...");
exit(0);
}
GLExtensions& extensions(GLExtensions::getInstance());
extensions.initWithGLStrings(
glGetString(GL_VENDOR),
glGetString(GL_RENDERER),
glGetString(GL_VERSION),
glGetString(GL_EXTENSIONS),
eglQueryString(display, EGL_VENDOR),
eglQueryString(display, EGL_VERSION),
eglQueryString(display, EGL_EXTENSIONS));
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);
ALOGI("EGL informations:");
ALOGI("# of configs : %d", numConfigs);
ALOGI("vendor : %s", extensions.getEglVendor());
ALOGI("version : %s", extensions.getEglVersion());
ALOGI("extensions: %s", extensions.getEglExtension());
ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported");
ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, config);
ALOGI("OpenGL informations:");
ALOGI("vendor : %s", extensions.getVendor());
ALOGI("renderer : %s", extensions.getRenderer());
ALOGI("version : %s", extensions.getVersion());
ALOGI("extensions: %s", extensions.getExtension());
ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize);
ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]);
ALOGI("flags = %08x", mFlags);
// Unbind the context from this thread
eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
// initialize the H/W composer
mHwc = new HWComposer(mFlinger, *this, mRefreshPeriod);
if (mHwc->initCheck() == NO_ERROR) {
mHwc->setFrameBuffer(mDisplay, mSurface);
}
// initialize the display orientation transform.
// it's a constant that should come from the display driver.
int displayOrientation = ISurfaceComposer::eOrientationDefault;
char property[PROPERTY_VALUE_MAX];
if (property_get("ro.sf.hwrotation", property, NULL) > 0) {
//displayOrientation
switch (atoi(property)) {
case 90:
displayOrientation = ISurfaceComposer::eOrientation90;
break;
case 270:
displayOrientation = ISurfaceComposer::eOrientation270;
break;
}
}
w = mDisplayWidth;
h = mDisplayHeight;
DisplayHardware::orientationToTransfrom(displayOrientation, w, h,
&mDisplayTransform);
if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) {
mLogicalDisplayWidth = h;
mLogicalDisplayHeight = w;
} else {
mLogicalDisplayWidth = w;
mLogicalDisplayHeight = h;
}
DisplayHardware::setOrientation(ISurfaceComposer::eOrientationDefault);
}
void DisplayHardware::setVSyncHandler(const sp<VSyncHandler>& handler) {
Mutex::Autolock _l(mLock);
mVSyncHandler = handler;
}
void DisplayHardware::eventControl(int event, int enabled) {
if (event == EVENT_VSYNC) {
mPowerHAL.vsyncHint(enabled);
}
mHwc->eventControl(event, enabled);
}
void DisplayHardware::onVSyncReceived(int dpy, nsecs_t timestamp) {
sp<VSyncHandler> handler;
{ // scope for the lock
Mutex::Autolock _l(mLock);
mLastHwVSync = timestamp;
if (mVSyncHandler != NULL) {
handler = mVSyncHandler.promote();
}
}
if (handler != NULL) {
handler->onVSyncReceived(dpy, timestamp);
}
}
HWComposer& DisplayHardware::getHwComposer() const {
return *mHwc;
}
/*
* Clean up. Throw out our local state.
*
* (It's entirely possible we'll never get here, since this is meant
* for real hardware, which doesn't restart.)
*/
void DisplayHardware::fini()
{
eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
eglTerminate(mDisplay);
}
void DisplayHardware::releaseScreen() const
{
DisplayHardwareBase::releaseScreen();
if (mHwc->initCheck() == NO_ERROR) {
mHwc->release();
}
}
void DisplayHardware::acquireScreen() const
{
if (mHwc->initCheck() == NO_ERROR) {
mHwc->acquire();
}
DisplayHardwareBase::acquireScreen();
}
uint32_t DisplayHardware::getPageFlipCount() const {
return mPageFlipCount;
}
nsecs_t DisplayHardware::getRefreshTimestamp() const {
// this returns the last refresh timestamp.
// if the last one is not available, we estimate it based on
// the refresh period and whatever closest timestamp we have.
Mutex::Autolock _l(mLock);
nsecs_t now = systemTime(CLOCK_MONOTONIC);
return now - ((now - mLastHwVSync) % mRefreshPeriod);
}
nsecs_t DisplayHardware::getRefreshPeriod() const {
return mRefreshPeriod;
}
status_t DisplayHardware::compositionComplete() const {
return mNativeWindow->compositionComplete();
}
void DisplayHardware::flip(const Region& dirty) const
{
checkGLErrors();
EGLDisplay dpy = mDisplay;
EGLSurface surface = mSurface;
#ifdef EGL_ANDROID_swap_rectangle
if (mFlags & SWAP_RECTANGLE) {
const Region newDirty(dirty.intersect(bounds()));
const Rect b(newDirty.getBounds());
eglSetSwapRectangleANDROID(dpy, surface,
b.left, b.top, b.width(), b.height());
}
#endif
if (mFlags & PARTIAL_UPDATES) {
mNativeWindow->setUpdateRectangle(dirty.getBounds());
}
mPageFlipCount++;
if (mHwc->initCheck() == NO_ERROR) {
mHwc->commit();
} else {
eglSwapBuffers(dpy, surface);
}
checkEGLErrors("eglSwapBuffers");
// for debugging
//glClearColor(1,0,0,0);
//glClear(GL_COLOR_BUFFER_BIT);
}
uint32_t DisplayHardware::getFlags() const
{
return mFlags;
}
void DisplayHardware::makeCurrent() const
{
eglMakeCurrent(mDisplay, mSurface, mSurface, mContext);
}
void DisplayHardware::dump(String8& res) const
{
mNativeWindow->dump(res);
}
// ----------------------------------------------------------------------------
status_t DisplayHardware::orientationToTransfrom(
int orientation, int w, int h, Transform* tr)
{
uint32_t flags = 0;
switch (orientation) {
case ISurfaceComposer::eOrientationDefault:
flags = Transform::ROT_0;
break;
case ISurfaceComposer::eOrientation90:
flags = Transform::ROT_90;
break;
case ISurfaceComposer::eOrientation180:
flags = Transform::ROT_180;
break;
case ISurfaceComposer::eOrientation270:
flags = Transform::ROT_270;
break;
default:
return BAD_VALUE;
}
tr->set(flags, w, h);
return NO_ERROR;
}
status_t DisplayHardware::setOrientation(int orientation)
{
// If the rotation can be handled in hardware, this is where
// the magic should happen.
const int w = mLogicalDisplayWidth;
const int h = mLogicalDisplayHeight;
mUserDisplayWidth = w;
mUserDisplayHeight = h;
Transform orientationTransform;
DisplayHardware::orientationToTransfrom(orientation, w, h,
&orientationTransform);
if (orientation & ISurfaceComposer::eOrientationSwapMask) {
mUserDisplayWidth = h;
mUserDisplayHeight = w;
}
mOrientation = orientation;
mGlobalTransform = mDisplayTransform * orientationTransform;
return NO_ERROR;
}
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