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/*
** Copyright 2007, 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_OBJECT_H
#define ANDROID_EGL_OBJECT_H
#include <ctype.h>
#include <stdint.h>
#include <stdlib.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES/gl.h>
#include <GLES/glext.h>
#include <utils/threads.h>
#include <system/window.h>
#include "egl_display.h"
// ----------------------------------------------------------------------------
namespace android {
// ----------------------------------------------------------------------------
struct egl_display_t;
class egl_object_t {
egl_display_t *display;
volatile int32_t terminated;
mutable volatile int32_t count;
public:
egl_object_t(egl_display_t* display);
inline bool isAlive() const { return !terminated; }
inline int32_t incRef() { return android_atomic_inc(&count); }
inline int32_t decRef() { return android_atomic_dec(&count); }
private:
bool get();
bool put();
public:
template <typename N, typename T>
struct LocalRef {
N* ref;
LocalRef(T o) : ref(0) {
N* native = reinterpret_cast<N*>(o);
if (o && native->get()) {
ref = native;
}
}
~LocalRef() {
if (ref && ref->put()) {
delete ref;
}
}
inline N* get() {
return ref;
}
void acquire() const {
if (ref) {
android_atomic_inc(&ref->count);
}
}
void release() const {
if (ref) {
int32_t c = android_atomic_dec(&ref->count);
// ref->count cannot be 1 prior atomic_dec because we have
// a reference, and if we have one, it means there was
// already one before us.
LOGE_IF(c==1, "refcount is now 0 in release()");
}
}
void terminate() {
if (ref) {
ref->terminated = 1;
release();
}
}
};
};
// ----------------------------------------------------------------------------
struct egl_surface_t: public egl_object_t {
typedef egl_object_t::LocalRef<egl_surface_t, EGLSurface> Ref;
egl_surface_t(EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win,
EGLSurface surface, int impl, egl_connection_t const* cnx) :
egl_object_t(get_display(dpy)), dpy(dpy), surface(surface),
config(config), win(win), impl(impl), cnx(cnx) {
}
~egl_surface_t() {
}
EGLDisplay dpy;
EGLSurface surface;
EGLConfig config;
sp<ANativeWindow> win;
int impl;
egl_connection_t const* cnx;
};
struct egl_context_t: public egl_object_t {
typedef egl_object_t::LocalRef<egl_context_t, EGLContext> Ref;
egl_context_t(EGLDisplay dpy, EGLContext context, EGLConfig config,
int impl, egl_connection_t const* cnx, int version) :
egl_object_t(get_display(dpy)), dpy(dpy), context(context),
config(config), read(0), draw(0), impl(impl), cnx(cnx),
version(version) {
}
~egl_context_t() {
}
EGLDisplay dpy;
EGLContext context;
EGLConfig config;
EGLSurface read;
EGLSurface draw;
int impl;
egl_connection_t const* cnx;
int version;
};
struct egl_image_t: public egl_object_t {
typedef egl_object_t::LocalRef<egl_image_t, EGLImageKHR> Ref;
egl_image_t(EGLDisplay dpy, EGLContext context) :
egl_object_t(get_display(dpy)), dpy(dpy), context(context) {
memset(images, 0, sizeof(images));
}
EGLDisplay dpy;
EGLContext context;
EGLImageKHR images[IMPL_NUM_IMPLEMENTATIONS];
};
struct egl_sync_t: public egl_object_t {
typedef egl_object_t::LocalRef<egl_sync_t, EGLSyncKHR> Ref;
egl_sync_t(EGLDisplay dpy, EGLContext context, EGLSyncKHR sync) :
egl_object_t(get_display(dpy)), dpy(dpy), context(context), sync(sync) {
}
EGLDisplay dpy;
EGLContext context;
EGLSyncKHR sync;
};
// ----------------------------------------------------------------------------
typedef egl_surface_t::Ref SurfaceRef;
typedef egl_context_t::Ref ContextRef;
typedef egl_image_t::Ref ImageRef;
typedef egl_sync_t::Ref SyncRef;
// ----------------------------------------------------------------------------
template<typename NATIVE, typename EGL>
static inline NATIVE* egl_to_native_cast(EGL arg) {
return reinterpret_cast<NATIVE*>(arg);
}
static inline
egl_surface_t* get_surface(EGLSurface surface) {
return egl_to_native_cast<egl_surface_t>(surface);
}
static inline
egl_context_t* get_context(EGLContext context) {
return egl_to_native_cast<egl_context_t>(context);
}
static inline
egl_image_t* get_image(EGLImageKHR image) {
return egl_to_native_cast<egl_image_t>(image);
}
static inline
egl_sync_t* get_sync(EGLSyncKHR sync) {
return egl_to_native_cast<egl_sync_t>(sync);
}
// ----------------------------------------------------------------------------
}; // namespace android
// ----------------------------------------------------------------------------
#endif // ANDROID_EGL_OBJECT_H
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