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/*
** Copyright 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.
*/
#ifndef ANDROID_EGL_LOADER_H
#define ANDROID_EGL_LOADER_H
#include <stdint.h>
#include <EGL/egl.h>
// ----------------------------------------------------------------------------
namespace android {
// ----------------------------------------------------------------------------
struct egl_connection_t;
class Loader {
typedef __eglMustCastToProperFunctionPointerType (* getProcAddressType)(const char*);
enum {
EGL = 0x01,
GLESv1_CM = 0x02,
GLESv2 = 0x04,
PLATFORM = 0x08
};
struct driver_t {
explicit driver_t(void* gles);
~driver_t();
// returns -errno
int set(void* hnd, int32_t api);
void* dso[3];
};
getProcAddressType getProcAddress;
public:
static Loader& getInstance();
~Loader();
void* open(egl_connection_t* cnx);
void close(egl_connection_t* cnx);
private:
Loader();
driver_t* attempt_to_load_angle(egl_connection_t* cnx);
driver_t* attempt_to_load_updated_driver(egl_connection_t* cnx);
driver_t* attempt_to_load_system_driver(egl_connection_t* cnx, const char* suffix, const bool exact);
void unload_system_driver(egl_connection_t* cnx);
void initialize_api(void* dso, egl_connection_t* cnx, uint32_t mask);
void init_angle_backend(void* dso, egl_connection_t* cnx);
static __attribute__((noinline))
void init_api(void* dso,
char const * const * api,
char const * const * ref_api,
__eglMustCastToProperFunctionPointerType* curr,
getProcAddressType getProcAddress);
};
// ----------------------------------------------------------------------------
}; // namespace android
// ----------------------------------------------------------------------------
#endif /* ANDROID_EGL_LOADER_H */
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