/*
* 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/DisplayInfo.h>
#include <ui/PixelFormat.h>
#include <gui/SurfaceTextureClient.h>
#include <GLES/gl.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <hardware/gralloc.h>
#include "DisplayHardware/FramebufferSurface.h"
#include "DisplayHardware/HWComposer.h"
#include "clz.h"
#include "DisplayDevice.h"
#include "GLExtensions.h"
#include "SurfaceFlinger.h"
#include "LayerBase.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);
}
// ----------------------------------------------------------------------------
/*
* Initialize the display to the specified values.
*
*/
DisplayDevice::DisplayDevice(
const sp<SurfaceFlinger>& flinger,
DisplayType type,
bool isSecure,
const wp<IBinder>& displayToken,
const sp<ANativeWindow>& nativeWindow,
const sp<FramebufferSurface>& framebufferSurface,
EGLConfig config)
: mFlinger(flinger),
mType(type), mHwcDisplayId(-1),
mNativeWindow(nativeWindow),
mFramebufferSurface(framebufferSurface),
mDisplay(EGL_NO_DISPLAY),
mSurface(EGL_NO_SURFACE),
mContext(EGL_NO_CONTEXT),
mDisplayWidth(), mDisplayHeight(), mFormat(),
mFlags(),
mPageFlipCount(),
mIsSecure(isSecure),
mSecureLayerVisible(false),
mScreenAcquired(false),
mLayerStack(0),
mOrientation()
{
init(config);
}
DisplayDevice::~DisplayDevice() {
if (mSurface != EGL_NO_SURFACE) {
eglDestroySurface(mDisplay, mSurface);
mSurface = EGL_NO_SURFACE;
}
}
bool DisplayDevice::isValid() const {
return mFlinger != NULL;
}
int DisplayDevice::getWidth() const {
return mDisplayWidth;
}
int DisplayDevice::getHeight() const {
return mDisplayHeight;
}
PixelFormat DisplayDevice::getFormat() const {
return mFormat;
}
EGLSurface DisplayDevice::getEGLSurface() const {
return mSurface;
}
void DisplayDevice::init(EGLConfig config)
{
ANativeWindow* const window = mNativeWindow.get();
int format;
window->query(window, NATIVE_WINDOW_FORMAT, &format);
/*
* Create our display's surface
*/
EGLSurface surface;
EGLint w, h;
EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
surface = eglCreateWindowSurface(display, config, window, NULL);
eglQuerySurface(display, surface, EGL_WIDTH, &mDisplayWidth);
eglQuerySurface(display, surface, EGL_HEIGHT, &mDisplayHeight);
mDisplay = display;
mSurface = surface;
mFormat = format;
mPageFlipCount = 0;
mViewport.makeInvalid();
mFrame.makeInvalid();
// external displays are always considered enabled
mScreenAcquired = (mType >= DisplayDevice::NUM_DISPLAY_TYPES);
// get an h/w composer ID
mHwcDisplayId = mFlinger->allocateHwcDisplayId(mType);
// Name the display. The name will be replaced shortly if the display
// was created with createDisplay().
switch (mType) {
case DISPLAY_PRIMARY:
mDisplayName = "Built-in Screen";
break;
case DISPLAY_EXTERNAL:
mDisplayName = "HDMI Screen";
break;
default:
mDisplayName = "Virtual Screen"; // e.g. Overlay #n
break;
}
// initialize the display orientation transform.
setProjection(DisplayState::eOrientationDefault, mViewport, mFrame);
}
void DisplayDevice::setDisplayName(const String8& displayName) {
if (!displayName.isEmpty()) {
// never override the name with an empty name
mDisplayName = displayName;
}
}
uint32_t DisplayDevice::getPageFlipCount() const {
return mPageFlipCount;
}
status_t DisplayDevice::compositionComplete() const {
if (mFramebufferSurface == NULL) {
return NO_ERROR;
}
return mFramebufferSurface->compositionComplete();
}
void DisplayDevice::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
mPageFlipCount++;
}
void DisplayDevice::swapBuffers(HWComposer& hwc) const {
EGLBoolean success = EGL_TRUE;
if (hwc.initCheck() != NO_ERROR) {
// no HWC, we call eglSwapBuffers()
success = eglSwapBuffers(mDisplay, mSurface);
} else {
// We have a valid HWC, but not all displays can use it, in particular
// the virtual displays are on their own.
// TODO: HWC 1.2 will allow virtual displays
if (mType >= DisplayDevice::DISPLAY_VIRTUAL) {
// always call eglSwapBuffers() for virtual displays
success = eglSwapBuffers(mDisplay, mSurface);
} else if (hwc.supportsFramebufferTarget()) {
// as of hwc 1.1 we always call eglSwapBuffers if we have some
// GLES layers
if (hwc.hasGlesComposition(mType)) {
success = eglSwapBuffers(mDisplay, mSurface);
}
} else {
// HWC doesn't have the framebuffer target, we don't call
// eglSwapBuffers(), since this is handled by HWComposer::commit().
}
}
if (!success) {
EGLint error = eglGetError();
if (error == EGL_CONTEXT_LOST ||
mType == DisplayDevice::DISPLAY_PRIMARY) {
LOG_ALWAYS_FATAL("eglSwapBuffers(%p, %p) failed with 0x%08x",
mDisplay, mSurface, error);
}
}
}
void DisplayDevice::onSwapBuffersCompleted(HWComposer& hwc) const {
if (hwc.initCheck() == NO_ERROR) {
if (hwc.supportsFramebufferTarget()) {
int fd = hwc.getAndResetReleaseFenceFd(mType);
mFramebufferSurface->setReleaseFenceFd(fd);
}
}
}
uint32_t DisplayDevice::getFlags() const
{
return mFlags;
}
EGLBoolean DisplayDevice::makeCurrent(EGLDisplay dpy,
const sp<const DisplayDevice>& hw, EGLContext ctx) {
EGLBoolean result = EGL_TRUE;
EGLSurface sur = eglGetCurrentSurface(EGL_DRAW);
if (sur != hw->mSurface) {
result = eglMakeCurrent(dpy, hw->mSurface, hw->mSurface, ctx);
if (result == EGL_TRUE) {
setViewportAndProjection(hw);
}
}
return result;
}
void DisplayDevice::setViewportAndProjection(const sp<const DisplayDevice>& hw) {
GLsizei w = hw->mDisplayWidth;
GLsizei h = hw->mDisplayHeight;
glViewport(0, 0, w, h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
// put the origin in the left-bottom corner
glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h
glMatrixMode(GL_MODELVIEW);
}
// ----------------------------------------------------------------------------
void DisplayDevice::setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers) {
mVisibleLayersSortedByZ = layers;
mSecureLayerVisible = false;
size_t count = layers.size();
for (size_t i=0 ; i<count ; i++) {
if (layers[i]->isSecure()) {
mSecureLayerVisible = true;
}
}
}
const Vector< sp<LayerBase> >& DisplayDevice::getVisibleLayersSortedByZ() const {
return mVisibleLayersSortedByZ;
}
bool DisplayDevice::getSecureLayerVisible() const {
return mSecureLayerVisible;
}
Region DisplayDevice::getDirtyRegion(bool repaintEverything) const {
Region dirty;
if (repaintEverything) {
dirty.set(getBounds());
} else {
const Transform& planeTransform(mGlobalTransform);
dirty = planeTransform.transform(this->dirtyRegion);
dirty.andSelf(getBounds());
}
return dirty;
}
// ----------------------------------------------------------------------------
bool DisplayDevice::canDraw() const {
return mScreenAcquired;
}
void DisplayDevice::releaseScreen() const {
mScreenAcquired = false;
}
void DisplayDevice::acquireScreen() const {
mScreenAcquired = true;
}
bool DisplayDevice::isScreenAcquired() const {
return mScreenAcquired;
}
// ----------------------------------------------------------------------------
void DisplayDevice::setLayerStack(uint32_t stack) {
mLayerStack = stack;
dirtyRegion.set(bounds());
}
// ----------------------------------------------------------------------------
status_t DisplayDevice::orientationToTransfrom(
int orientation, int w, int h, Transform* tr)
{
uint32_t flags = 0;
switch (orientation) {
case DisplayState::eOrientationDefault:
flags = Transform::ROT_0;
break;
case DisplayState::eOrientation90:
flags = Transform::ROT_90;
break;
case DisplayState::eOrientation180:
flags = Transform::ROT_180;
break;
case DisplayState::eOrientation270:
flags = Transform::ROT_270;
break;
default:
return BAD_VALUE;
}
tr->set(flags, w, h);
return NO_ERROR;
}
void DisplayDevice::setProjection(int orientation,
const Rect& viewport, const Rect& frame) {
mOrientation = orientation;
mViewport = viewport;
mFrame = frame;
updateGeometryTransform();
}
void DisplayDevice::updateGeometryTransform() {
int w = mDisplayWidth;
int h = mDisplayHeight;
Transform TL, TP, R, S;
if (DisplayDevice::orientationToTransfrom(
mOrientation, w, h, &R) == NO_ERROR) {
dirtyRegion.set(bounds());
Rect viewport(mViewport);
Rect frame(mFrame);
if (!frame.isValid()) {
// the destination frame can be invalid if it has never been set,
// in that case we assume the whole display frame.
frame = Rect(w, h);
}
if (viewport.isEmpty()) {
// viewport can be invalid if it has never been set, in that case
// we assume the whole display size.
// it's also invalid to have an empty viewport, so we handle that
// case in the same way.
viewport = Rect(w, h);
if (R.getOrientation() & Transform::ROT_90) {
// viewport is always specified in the logical orientation
// of the display (ie: post-rotation).
swap(viewport.right, viewport.bottom);
}
}
float src_width = viewport.width();
float src_height = viewport.height();
float dst_width = frame.width();
float dst_height = frame.height();
if (src_width != dst_width || src_height != dst_height) {
float sx = dst_width / src_width;
float sy = dst_height / src_height;
S.set(sx, 0, 0, sy);
}
float src_x = viewport.left;
float src_y = viewport.top;
float dst_x = frame.left;
float dst_y = frame.top;
TL.set(-src_x, -src_y);
TP.set(dst_x, dst_y);
// The viewport and frame are both in the logical orientation.
// Apply the logical translation, scale to physical size, apply the
// physical translation and finally rotate to the physical orientation.
mGlobalTransform = R * TP * S * TL;
const uint8_t type = mGlobalTransform.getType();
mNeedsFiltering = (!mGlobalTransform.preserveRects() ||
(type >= Transform::SCALE));
}
}
void DisplayDevice::dump(String8& result, char* buffer, size_t SIZE) const {
const Transform& tr(mGlobalTransform);
snprintf(buffer, SIZE,
"+ DisplayDevice: %s\n"
" type=%x, layerStack=%u, (%4dx%4d), ANativeWindow=%p, orient=%2d (type=%08x), "
"flips=%u, isSecure=%d, secureVis=%d, acquired=%d, numLayers=%u\n"
" v:[%d,%d,%d,%d], f:[%d,%d,%d,%d], "
"transform:[[%0.3f,%0.3f,%0.3f][%0.3f,%0.3f,%0.3f][%0.3f,%0.3f,%0.3f]]\n",
mDisplayName.string(), mType,
mLayerStack, mDisplayWidth, mDisplayHeight, mNativeWindow.get(),
mOrientation, tr.getType(), getPageFlipCount(),
mIsSecure, mSecureLayerVisible, mScreenAcquired, mVisibleLayersSortedByZ.size(),
mViewport.left, mViewport.top, mViewport.right, mViewport.bottom,
mFrame.left, mFrame.top, mFrame.right, mFrame.bottom,
tr[0][0], tr[1][0], tr[2][0],
tr[0][1], tr[1][1], tr[2][1],
tr[0][2], tr[1][2], tr[2][2]);
result.append(buffer);
String8 fbtargetDump;
if (mFramebufferSurface != NULL) {
mFramebufferSurface->dump(fbtargetDump);
result.append(fbtargetDump);
}
}