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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.
*/
#ifndef ANDROID_ANDROID_NATIVES_H
#define ANDROID_ANDROID_NATIVES_H
#include <sys/types.h>
#include <string.h>
#include <hardware/gralloc.h>
#ifdef __cplusplus
extern "C" {
#endif
/*****************************************************************************/
#define ANDROID_NATIVE_MAKE_CONSTANT(a,b,c,d) \
(((unsigned)(a)<<24)|((unsigned)(b)<<16)|((unsigned)(c)<<8)|(unsigned)(d))
#define ANDROID_NATIVE_WINDOW_MAGIC \
ANDROID_NATIVE_MAKE_CONSTANT('_','w','n','d')
#define ANDROID_NATIVE_BUFFER_MAGIC \
ANDROID_NATIVE_MAKE_CONSTANT('_','b','f','r')
// ---------------------------------------------------------------------------
struct android_native_buffer_t;
// ---------------------------------------------------------------------------
struct android_native_base_t
{
/* a magic value defined by the actual EGL native type */
int magic;
/* the sizeof() of the actual EGL native type */
int version;
void* reserved[4];
/* reference-counting interface */
void (*incRef)(struct android_native_base_t* base);
void (*decRef)(struct android_native_base_t* base);
};
// ---------------------------------------------------------------------------
/* attributes queriable with query() */
enum {
NATIVE_WINDOW_WIDTH = 0,
NATIVE_WINDOW_HEIGHT = 1,
NATIVE_WINDOW_FORMAT = 2,
};
/* valid operations for the (*perform)() hook */
enum {
NATIVE_WINDOW_SET_USAGE = 0
};
struct android_native_window_t
{
#ifdef __cplusplus
android_native_window_t()
: flags(0), minSwapInterval(0), maxSwapInterval(0), xdpi(0), ydpi(0)
{
common.magic = ANDROID_NATIVE_WINDOW_MAGIC;
common.version = sizeof(android_native_window_t);
memset(common.reserved, 0, sizeof(common.reserved));
}
#endif
struct android_native_base_t common;
/* flags describing some attributes of this surface or its updater */
const uint32_t flags;
/* min swap interval supported by this updated */
const int minSwapInterval;
/* max swap interval supported by this updated */
const int maxSwapInterval;
/* horizontal and vertical resolution in DPI */
const float xdpi;
const float ydpi;
/* Some storage reserved for the OEM's driver. */
intptr_t oem[4];
/*
* Set the swap interval for this surface.
*
* Returns 0 on success or -errno on error.
*/
int (*setSwapInterval)(struct android_native_window_t* window,
int interval);
/*
* hook called by EGL to acquire a buffer. After this call, the buffer
* is not locked, so its content cannot be modified.
* this call may block if no buffers are available.
*
* Returns 0 on success or -errno on error.
*/
int (*dequeueBuffer)(struct android_native_window_t* window,
struct android_native_buffer_t** buffer);
/*
* hook called by EGL to lock a buffer. This MUST be called before modifying
* the content of a buffer. The buffer must have been acquired with
* dequeueBuffer first.
*
* Returns 0 on success or -errno on error.
*/
int (*lockBuffer)(struct android_native_window_t* window,
struct android_native_buffer_t* buffer);
/*
* hook called by EGL when modifications to the render buffer are done.
* This unlocks and post the buffer.
*
* Buffers MUST be queued in the same order than they were dequeued.
*
* Returns 0 on success or -errno on error.
*/
int (*queueBuffer)(struct android_native_window_t* window,
struct android_native_buffer_t* buffer);
/*
* hook used to retrieve information about the native window.
*
* Returns 0 on success or -errno on error.
*/
int (*query)(struct android_native_window_t* window,
int what, int* value);
/*
* hook used to perform various operations on the surface.
* (*perform)() is a generic mechanism to add functionality to
* android_native_window_t while keeping backward binary compatibility.
*
* This hook should not be called directly, instead use the helper functions
* defined below.
*
* The valid operations are:
* NATIVE_WINDOW_SET_USAGE
*
*/
int (*perform)(struct android_native_window_t* window,
int operation, ... );
void* reserved_proc[3];
};
/*
* native_window_set_usage() sets the intended usage flags for the next
* buffers acquired with (*lockBuffer)() and on.
* By default (if this function is never called), a usage of
* GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE
* is assumed.
* Calling this function will usually cause following buffers to be
* reallocated.
*/
inline int native_window_set_usage(
struct android_native_window_t* window, int usage)
{
return window->perform(window, NATIVE_WINDOW_SET_USAGE, usage);
}
// ---------------------------------------------------------------------------
/* FIXME: this is legacy for pixmaps */
struct egl_native_pixmap_t
{
int32_t version; /* must be 32 */
int32_t width;
int32_t height;
int32_t stride;
uint8_t* data;
uint8_t format;
uint8_t rfu[3];
union {
uint32_t compressedFormat;
int32_t vstride;
};
int32_t reserved;
};
/*****************************************************************************/
#ifdef __cplusplus
}
#endif
/*****************************************************************************/
#ifdef __cplusplus
#include <utils/RefBase.h>
namespace android {
/*
* This helper class turns an EGL android_native_xxx type into a C++
* reference-counted object; with proper type conversions.
*/
template <typename NATIVE_TYPE, typename TYPE, typename REF>
class EGLNativeBase : public NATIVE_TYPE, public REF
{
protected:
typedef EGLNativeBase<NATIVE_TYPE, TYPE, REF> BASE;
EGLNativeBase() : NATIVE_TYPE(), REF() {
NATIVE_TYPE::common.incRef = incRef;
NATIVE_TYPE::common.decRef = decRef;
}
static inline TYPE* getSelf(NATIVE_TYPE* self) {
return static_cast<TYPE*>(self);
}
static inline TYPE const* getSelf(NATIVE_TYPE const* self) {
return static_cast<TYPE const *>(self);
}
static inline TYPE* getSelf(android_native_base_t* base) {
return getSelf(reinterpret_cast<NATIVE_TYPE*>(base));
}
static inline TYPE const * getSelf(android_native_base_t const* base) {
return getSelf(reinterpret_cast<NATIVE_TYPE const*>(base));
}
static void incRef(android_native_base_t* base) {
EGLNativeBase* self = getSelf(base);
self->incStrong(self);
}
static void decRef(android_native_base_t* base) {
EGLNativeBase* self = getSelf(base);
self->decStrong(self);
}
};
} // namespace android
#endif // __cplusplus
/*****************************************************************************/
#endif /* ANDROID_ANDROID_NATIVES_H */
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