1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "OpenGLRenderer"
18
19#include <utils/Log.h>
20
21#include "Caches.h"
22#include "Image.h"
23
24namespace android {
25namespace uirenderer {
26
27Image::Image(sp<GraphicBuffer> buffer) {
28    // Create the EGLImage object that maps the GraphicBuffer
29    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
30    EGLClientBuffer clientBuffer = (EGLClientBuffer) buffer->getNativeBuffer();
31    EGLint attrs[] = { EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE };
32
33    mImage = eglCreateImageKHR(display, EGL_NO_CONTEXT,
34            EGL_NATIVE_BUFFER_ANDROID, clientBuffer, attrs);
35
36    if (mImage == EGL_NO_IMAGE_KHR) {
37        ALOGW("Error creating image (%#x)", eglGetError());
38        mTexture = 0;
39    } else {
40        // Create a 2D texture to sample from the EGLImage
41        glGenTextures(1, &mTexture);
42        Caches::getInstance().textureState().bindTexture(mTexture);
43        glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, mImage);
44
45        GLenum status = GL_NO_ERROR;
46        while ((status = glGetError()) != GL_NO_ERROR) {
47            ALOGW("Error creating image (%#x)", status);
48        }
49    }
50}
51
52Image::~Image() {
53    if (mImage != EGL_NO_IMAGE_KHR) {
54        eglDestroyImageKHR(eglGetDisplay(EGL_DEFAULT_DISPLAY), mImage);
55        mImage = EGL_NO_IMAGE_KHR;
56
57        Caches::getInstance().textureState().deleteTexture(mTexture);
58        mTexture = 0;
59    }
60}
61
62}; // namespace uirenderer
63}; // namespace android
64