Image.cpp revision 5a4690bf26932c0d6940e4af8516d920e09ae81a 
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#include <utils/Log.h>
18
19#include "Caches.h"
20#include "Image.h"
21
22namespace android {
23namespace uirenderer {
24
25Image::Image(sp<GraphicBuffer> buffer) {
26    // Create the EGLImage object that maps the GraphicBuffer
27    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
28    EGLClientBuffer clientBuffer = (EGLClientBuffer) buffer->getNativeBuffer();
29    EGLint attrs[] = { EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE };
30
31    mImage = eglCreateImageKHR(display, EGL_NO_CONTEXT,
32            EGL_NATIVE_BUFFER_ANDROID, clientBuffer, attrs);
33
34    if (mImage == EGL_NO_IMAGE_KHR) {
35        ALOGW("Error creating image (%#x)", eglGetError());
36        mTexture = 0;
37    } else {
38        // Create a 2D texture to sample from the EGLImage
39        glGenTextures(1, &mTexture);
40        Caches::getInstance().textureState().bindTexture(mTexture);
41        glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, mImage);
42
43        GLenum status = GL_NO_ERROR;
44        while ((status = glGetError()) != GL_NO_ERROR) {
45            ALOGW("Error creating image (%#x)", status);
46        }
47    }
48}
49
50Image::~Image() {
51    if (mImage != EGL_NO_IMAGE_KHR) {
52        eglDestroyImageKHR(eglGetDisplay(EGL_DEFAULT_DISPLAY), mImage);
53        mImage = EGL_NO_IMAGE_KHR;
54
55        Caches::getInstance().textureState().deleteTexture(mTexture);
56        mTexture = 0;
57    }
58}
59
60}; // namespace uirenderer
61}; // namespace android
62