105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
/*
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* Copyright (C) 2009 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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#define LOG_TAG "EGLUtils"
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#include <utils/Errors.h>
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#include <ui/EGLUtils.h>
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#include <EGL/egl.h>
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#include <private/ui/android_natives_priv.h>
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// ----------------------------------------------------------------------------
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namespace android {
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// ----------------------------------------------------------------------------
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status_t EGLUtils::selectConfigForPixelFormat(
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EGLDisplay dpy,
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EGLint const* attrs,
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PixelFormat format,
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EGLConfig* outConfig)
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{
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EGLint numConfigs = -1, n=0;
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if (outConfig == NULL)
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return BAD_VALUE;
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int err;
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PixelFormatInfo fbFormatInfo;
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if ((err = getPixelFormatInfo(PixelFormat(format), &fbFormatInfo)) < 0) {
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return err;
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}
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// Get all the "potential match" configs...
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if (eglGetConfigs(dpy, NULL, 0, &numConfigs) == EGL_FALSE)
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return BAD_VALUE;
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EGLConfig* const configs = (EGLConfig*)malloc(sizeof(EGLConfig)*numConfigs);
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if (eglChooseConfig(dpy, attrs, configs, numConfigs, &n) == EGL_FALSE) {
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free(configs);
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return BAD_VALUE;
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}
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const int fbSzA = fbFormatInfo.getSize(PixelFormatInfo::INDEX_ALPHA);
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const int fbSzR = fbFormatInfo.getSize(PixelFormatInfo::INDEX_RED);
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const int fbSzG = fbFormatInfo.getSize(PixelFormatInfo::INDEX_GREEN);
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const int fbSzB = fbFormatInfo.getSize(PixelFormatInfo::INDEX_BLUE);
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EGLConfig config = NULL;
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for (int i=0 ; i<n ; i++) {
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EGLint r,g,b,a;
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eglGetConfigAttrib(dpy, configs[i], EGL_RED_SIZE, &r);
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eglGetConfigAttrib(dpy, configs[i], EGL_GREEN_SIZE, &g);
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eglGetConfigAttrib(dpy, configs[i], EGL_BLUE_SIZE, &b);
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eglGetConfigAttrib(dpy, configs[i], EGL_ALPHA_SIZE, &a);
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if (fbSzA == a && fbSzR == r && fbSzG == g && fbSzB == b) {
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config = configs[i];
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break;
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}
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}
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free(configs);
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if (config) {
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*outConfig = config;
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return NO_ERROR;
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}
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return NAME_NOT_FOUND;
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}
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status_t EGLUtils::selectConfigForNativeWindow(
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EGLDisplay dpy,
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EGLint const* attrs,
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EGLNativeWindowType window,
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EGLConfig* outConfig)
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{
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int err;
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int format;
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if ((err = window->query(window, NATIVE_WINDOW_FORMAT, &format)) < 0) {
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return err;
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}
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return selectConfigForPixelFormat(dpy, attrs, format, outConfig);
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}
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// ----------------------------------------------------------------------------
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}; // namespace android
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// ----------------------------------------------------------------------------
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