// Copyright (C) 2016 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.

#include "host-common/opengl/misc.h"

#include "aemu/base/GLObjectCounter.h"

#include <cstring>

static int s_glesMajorVersion = 2;
static int s_glesMinorVersion = 0;

android::base::GLObjectCounter* s_default_gl_object_counter = nullptr;

android::base::GLObjectCounter* s_gl_object_counter = nullptr;
static GrallocImplementation s_gralloc_implementation = MINIGBM;

static SelectedRenderer s_renderer =
    SELECTED_RENDERER_HOST;

void emugl::setGlesVersion(int maj, int min) {
    s_glesMajorVersion = maj;
    s_glesMinorVersion = min;
}

void emugl::getGlesVersion(int* maj, int* min) {
    if (maj) *maj = s_glesMajorVersion;
    if (min) *min = s_glesMinorVersion;
}

void emugl::setRenderer(SelectedRenderer renderer) {
    s_renderer = renderer;
}

SelectedRenderer emugl::getRenderer() {
    return s_renderer;
}

bool emugl::hasExtension(const char* extensionsStr, const char* wantedExtension) {
    if (!extensionsStr) {
        return false;
    }
    const char* match = strstr(extensionsStr, wantedExtension);
    size_t wantedTerminatorOffset = strlen(wantedExtension);
    if (match &&
        (match[wantedTerminatorOffset] == ' ' ||
         match[wantedTerminatorOffset] == '\0')) {
        return true;
    }
    return false;
}

void emugl::setGLObjectCounter(android::base::GLObjectCounter* counter) {
    s_gl_object_counter = counter;
}

android::base::GLObjectCounter* emugl::getGLObjectCounter() {
    if (!s_gl_object_counter) {
        if (!s_default_gl_object_counter) {
            s_default_gl_object_counter = new android::base::GLObjectCounter;
        }
        return s_default_gl_object_counter;
    }
    return s_gl_object_counter;
}

void emugl::setGrallocImplementation(GrallocImplementation gralloc) {
    s_gralloc_implementation = gralloc;
}

GrallocImplementation emugl::getGrallocImplementation() {
    return s_gralloc_implementation;
}