360 lines
9.7 KiB
C++
360 lines
9.7 KiB
C++
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#include <cutils/properties.h>
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#include <utils/RefBase.h>
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#include <utils/Log.h>
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#include <ui/DisplayInfo.h>
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#include <ui/PixelFormat.h>
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#include <gui/SurfaceTextureClient.h>
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#include <GLES/gl.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <hardware/gralloc.h>
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#include "DisplayHardware/FramebufferSurface.h"
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#include "DisplayHardware/HWComposer.h"
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#include "clz.h"
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#include "DisplayDevice.h"
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#include "GLExtensions.h"
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#include "SurfaceFlinger.h"
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#include "LayerBase.h"
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// ----------------------------------------------------------------------------
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using namespace android;
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// ----------------------------------------------------------------------------
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static __attribute__((noinline))
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void checkGLErrors()
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{
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do {
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// there could be more than one error flag
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GLenum error = glGetError();
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if (error == GL_NO_ERROR)
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break;
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ALOGE("GL error 0x%04x", int(error));
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} while(true);
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}
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// ----------------------------------------------------------------------------
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/*
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* Initialize the display to the specified values.
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*
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*/
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DisplayDevice::DisplayDevice(
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const sp<SurfaceFlinger>& flinger,
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DisplayType type, const wp<IBinder>& displayToken,
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const sp<ANativeWindow>& nativeWindow,
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const sp<FramebufferSurface>& framebufferSurface,
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EGLConfig config)
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: mFlinger(flinger),
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mType(type), mHwcDisplayId(-1),
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mNativeWindow(nativeWindow),
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mFramebufferSurface(framebufferSurface),
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mDisplay(EGL_NO_DISPLAY),
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mSurface(EGL_NO_SURFACE),
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mContext(EGL_NO_CONTEXT),
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mDisplayWidth(), mDisplayHeight(), mFormat(),
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mFlags(),
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mPageFlipCount(),
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mSecureLayerVisible(false),
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mScreenAcquired(false),
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mLayerStack(0),
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mOrientation()
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{
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init(config);
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}
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DisplayDevice::~DisplayDevice() {
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if (mSurface != EGL_NO_SURFACE) {
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eglDestroySurface(mDisplay, mSurface);
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mSurface = EGL_NO_SURFACE;
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}
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}
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bool DisplayDevice::isValid() const {
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return mFlinger != NULL;
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}
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int DisplayDevice::getWidth() const {
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return mDisplayWidth;
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}
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int DisplayDevice::getHeight() const {
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return mDisplayHeight;
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}
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PixelFormat DisplayDevice::getFormat() const {
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return mFormat;
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}
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EGLSurface DisplayDevice::getEGLSurface() const {
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return mSurface;
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}
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void DisplayDevice::init(EGLConfig config)
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{
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ANativeWindow* const window = mNativeWindow.get();
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int format;
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window->query(window, NATIVE_WINDOW_FORMAT, &format);
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/*
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* Create our display's surface
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*/
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EGLSurface surface;
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EGLint w, h;
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EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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surface = eglCreateWindowSurface(display, config, window, NULL);
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eglQuerySurface(display, surface, EGL_WIDTH, &mDisplayWidth);
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eglQuerySurface(display, surface, EGL_HEIGHT, &mDisplayHeight);
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mDisplay = display;
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mSurface = surface;
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mFormat = format;
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mPageFlipCount = 0;
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mViewport.makeInvalid();
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mFrame.makeInvalid();
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// external displays are always considered enabled
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mScreenAcquired = (mType >= DisplayDevice::NUM_DISPLAY_TYPES);
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// get an h/w composer ID
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mHwcDisplayId = mFlinger->allocateHwcDisplayId(mType);
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// initialize the display orientation transform.
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setProjection(DisplayState::eOrientationDefault, mViewport, mFrame);
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}
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uint32_t DisplayDevice::getPageFlipCount() const {
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return mPageFlipCount;
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}
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status_t DisplayDevice::compositionComplete() const {
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if (mFramebufferSurface == NULL) {
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return NO_ERROR;
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}
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return mFramebufferSurface->compositionComplete();
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}
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void DisplayDevice::flip(const Region& dirty) const
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{
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checkGLErrors();
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EGLDisplay dpy = mDisplay;
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EGLSurface surface = mSurface;
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#ifdef EGL_ANDROID_swap_rectangle
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if (mFlags & SWAP_RECTANGLE) {
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const Region newDirty(dirty.intersect(bounds()));
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const Rect b(newDirty.getBounds());
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eglSetSwapRectangleANDROID(dpy, surface,
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b.left, b.top, b.width(), b.height());
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}
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#endif
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mPageFlipCount++;
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}
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uint32_t DisplayDevice::getFlags() const
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{
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return mFlags;
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}
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void DisplayDevice::dump(String8& res) const
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{
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if (mFramebufferSurface != NULL) {
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mFramebufferSurface->dump(res);
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}
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}
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EGLBoolean DisplayDevice::makeCurrent(EGLDisplay dpy,
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const sp<const DisplayDevice>& hw, EGLContext ctx) {
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EGLBoolean result = EGL_TRUE;
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EGLSurface sur = eglGetCurrentSurface(EGL_DRAW);
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if (sur != hw->mSurface) {
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result = eglMakeCurrent(dpy, hw->mSurface, hw->mSurface, ctx);
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if (result == EGL_TRUE) {
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GLsizei w = hw->mDisplayWidth;
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GLsizei h = hw->mDisplayHeight;
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glViewport(0, 0, w, h);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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// put the origin in the left-bottom corner
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glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h
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}
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}
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return result;
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}
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// ----------------------------------------------------------------------------
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void DisplayDevice::setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers) {
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mVisibleLayersSortedByZ = layers;
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mSecureLayerVisible = false;
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size_t count = layers.size();
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for (size_t i=0 ; i<count ; i++) {
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if (layers[i]->isSecure()) {
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mSecureLayerVisible = true;
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}
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}
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}
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const Vector< sp<LayerBase> >& DisplayDevice::getVisibleLayersSortedByZ() const {
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return mVisibleLayersSortedByZ;
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}
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bool DisplayDevice::getSecureLayerVisible() const {
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return mSecureLayerVisible;
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}
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Region DisplayDevice::getDirtyRegion(bool repaintEverything) const {
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Region dirty;
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if (repaintEverything) {
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dirty.set(getBounds());
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} else {
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const Transform& planeTransform(mGlobalTransform);
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dirty = planeTransform.transform(this->dirtyRegion);
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dirty.andSelf(getBounds());
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}
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return dirty;
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}
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// ----------------------------------------------------------------------------
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bool DisplayDevice::canDraw() const {
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return mScreenAcquired;
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}
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void DisplayDevice::releaseScreen() const {
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mScreenAcquired = false;
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}
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void DisplayDevice::acquireScreen() const {
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mScreenAcquired = true;
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}
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bool DisplayDevice::isScreenAcquired() const {
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return mScreenAcquired;
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}
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// ----------------------------------------------------------------------------
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void DisplayDevice::setLayerStack(uint32_t stack) {
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mLayerStack = stack;
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dirtyRegion.set(bounds());
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}
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// ----------------------------------------------------------------------------
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status_t DisplayDevice::orientationToTransfrom(
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int orientation, int w, int h, Transform* tr)
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{
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uint32_t flags = 0;
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switch (orientation) {
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case DisplayState::eOrientationDefault:
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flags = Transform::ROT_0;
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break;
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case DisplayState::eOrientation90:
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flags = Transform::ROT_90;
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break;
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case DisplayState::eOrientation180:
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flags = Transform::ROT_180;
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break;
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case DisplayState::eOrientation270:
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flags = Transform::ROT_270;
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break;
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default:
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return BAD_VALUE;
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}
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tr->set(flags, w, h);
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return NO_ERROR;
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}
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void DisplayDevice::setProjection(int orientation,
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const Rect& viewport, const Rect& frame) {
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mOrientation = orientation;
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mViewport = viewport;
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mFrame = frame;
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updateGeometryTransform();
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}
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void DisplayDevice::updateGeometryTransform() {
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int w = mDisplayWidth;
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int h = mDisplayHeight;
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Transform R, S;
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if (DisplayDevice::orientationToTransfrom(
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mOrientation, w, h, &R) == NO_ERROR) {
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dirtyRegion.set(bounds());
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Rect viewport(mViewport);
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Rect frame(mFrame);
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if (!frame.isValid()) {
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// the destination frame can be invalid if it has never been set,
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// in that case we assume the whole display frame.
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frame = Rect(w, h);
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}
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if (viewport.isEmpty()) {
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// viewport can be invalid if it has never been set, in that case
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// we assume the whole display size.
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// it's also invalid to have an empty viewport, so we handle that
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// case in the same way.
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viewport = Rect(w, h);
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if (R.getOrientation() & Transform::ROT_90) {
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// viewport is always specified in the logical orientation
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// of the display (ie: post-rotation).
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swap(viewport.right, viewport.bottom);
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}
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}
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float src_width = viewport.width();
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float src_height = viewport.height();
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float dst_width = frame.width();
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float dst_height = frame.height();
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if (src_width != src_height || dst_width != dst_height) {
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float sx = dst_width / src_width;
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float sy = dst_height / src_height;
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S.set(sx, 0, 0, sy);
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}
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float src_x = viewport.left;
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float src_y = viewport.top;
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float dst_x = frame.left;
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float dst_y = frame.top;
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float tx = dst_x - src_x;
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float ty = dst_y - src_y;
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S.set(tx, ty);
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// rotate first, followed by scaling
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mGlobalTransform = S * R;
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}
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}
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