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