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/*
* Copyright 2013 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 "ScreenRecord"
//#define LOG_NDEBUG 0
#include <utils/Log.h>
#define EGL_EGLEXT_PROTOTYPES
#include <gui/BufferQueue.h>
#include <gui/GraphicBufferAlloc.h>
#include <gui/Surface.h>
#include "EglWindow.h"
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <assert.h>
using namespace android;
status_t EglWindow::createWindow(const sp<IGraphicBufferProducer>& surface) {
if (mEglSurface != EGL_NO_SURFACE) {
ALOGE("surface already created");
return UNKNOWN_ERROR;
}
status_t err = eglSetupContext(false);
if (err != NO_ERROR) {
return err;
}
// Cache the current dimensions. We're not expecting these to change.
surface->query(NATIVE_WINDOW_WIDTH, &mWidth);
surface->query(NATIVE_WINDOW_HEIGHT, &mHeight);
// Output side (EGL surface to draw on).
sp<ANativeWindow> anw = new Surface(surface);
mEglSurface = eglCreateWindowSurface(mEglDisplay, mEglConfig, anw.get(),
NULL);
if (mEglSurface == EGL_NO_SURFACE) {
ALOGE("eglCreateWindowSurface error: %#x", eglGetError());
eglRelease();
return UNKNOWN_ERROR;
}
return NO_ERROR;
}
status_t EglWindow::createPbuffer(int width, int height) {
if (mEglSurface != EGL_NO_SURFACE) {
ALOGE("surface already created");
return UNKNOWN_ERROR;
}
status_t err = eglSetupContext(true);
if (err != NO_ERROR) {
return err;
}
mWidth = width;
mHeight = height;
EGLint pbufferAttribs[] = {
EGL_WIDTH, width,
EGL_HEIGHT, height,
EGL_NONE
};
mEglSurface = eglCreatePbufferSurface(mEglDisplay, mEglConfig, pbufferAttribs);
if (mEglSurface == EGL_NO_SURFACE) {
ALOGE("eglCreatePbufferSurface error: %#x", eglGetError());
eglRelease();
return UNKNOWN_ERROR;
}
return NO_ERROR;
}
status_t EglWindow::makeCurrent() const {
if (!eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) {
ALOGE("eglMakeCurrent failed: %#x", eglGetError());
return UNKNOWN_ERROR;
}
return NO_ERROR;
}
status_t EglWindow::eglSetupContext(bool forPbuffer) {
EGLBoolean result;
mEglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if (mEglDisplay == EGL_NO_DISPLAY) {
ALOGE("eglGetDisplay failed: %#x", eglGetError());
return UNKNOWN_ERROR;
}
EGLint majorVersion, minorVersion;
result = eglInitialize(mEglDisplay, &majorVersion, &minorVersion);
if (result != EGL_TRUE) {
ALOGE("eglInitialize failed: %#x", eglGetError());
return UNKNOWN_ERROR;
}
ALOGV("Initialized EGL v%d.%d", majorVersion, minorVersion);
EGLint numConfigs = 0;
EGLint windowConfigAttribs[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_RECORDABLE_ANDROID, 1,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
// no alpha
EGL_NONE
};
EGLint pbufferConfigAttribs[] = {
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_NONE
};
result = eglChooseConfig(mEglDisplay,
forPbuffer ? pbufferConfigAttribs : windowConfigAttribs,
&mEglConfig, 1, &numConfigs);
if (result != EGL_TRUE) {
ALOGE("eglChooseConfig error: %#x", eglGetError());
return UNKNOWN_ERROR;
}
EGLint contextAttribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
mEglContext = eglCreateContext(mEglDisplay, mEglConfig, EGL_NO_CONTEXT,
contextAttribs);
if (mEglContext == EGL_NO_CONTEXT) {
ALOGE("eglCreateContext error: %#x", eglGetError());
return UNKNOWN_ERROR;
}
return NO_ERROR;
}
void EglWindow::eglRelease() {
ALOGV("EglWindow::eglRelease");
if (mEglDisplay != EGL_NO_DISPLAY) {
eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
if (mEglContext != EGL_NO_CONTEXT) {
eglDestroyContext(mEglDisplay, mEglContext);
}
if (mEglSurface != EGL_NO_SURFACE) {
eglDestroySurface(mEglDisplay, mEglSurface);
}
}
mEglDisplay = EGL_NO_DISPLAY;
mEglContext = EGL_NO_CONTEXT;
mEglSurface = EGL_NO_SURFACE;
mEglConfig = NULL;
eglReleaseThread();
}
// Sets the presentation time on the current EGL buffer.
void EglWindow::presentationTime(nsecs_t whenNsec) const {
eglPresentationTimeANDROID(mEglDisplay, mEglSurface, whenNsec);
}
// Swaps the EGL buffer.
void EglWindow::swapBuffers() const {
eglSwapBuffers(mEglDisplay, mEglSurface);
}
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