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/*
* Copyright (C) 2008 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_UI_PRIVATE_SW_GRALLOC_HANDLE_H
#define ANDROID_UI_PRIVATE_SW_GRALLOC_HANDLE_H
#include <stdint.h>
#include <limits.h>
#include <sys/cdefs.h>
#include <hardware/gralloc.h>
#include <errno.h>
#include <cutils/native_handle.h>
namespace android {
/*****************************************************************************/
struct sw_gralloc_handle_t : public native_handle
{
// file-descriptors
int fd;
// ints
int magic;
int size;
int base;
int prot;
int pid;
static const int sNumInts = 5;
static const int sNumFds = 1;
static const int sMagic = '_sgh';
sw_gralloc_handle_t() :
fd(-1), magic(sMagic), size(0), base(0), prot(0), pid(getpid())
{
version = sizeof(native_handle);
numInts = sNumInts;
numFds = sNumFds;
}
~sw_gralloc_handle_t() {
magic = 0;
}
static int validate(const native_handle* h) {
const sw_gralloc_handle_t* hnd = (const sw_gralloc_handle_t*)h;
if (!h || h->version != sizeof(native_handle) ||
h->numInts != sNumInts || h->numFds != sNumFds ||
hnd->magic != sMagic)
{
return -EINVAL;
}
return 0;
}
static status_t alloc(uint32_t w, uint32_t h, int format,
int usage, buffer_handle_t* handle, int32_t* stride);
static status_t free(sw_gralloc_handle_t* hnd);
static status_t registerBuffer(sw_gralloc_handle_t* hnd);
static status_t unregisterBuffer(sw_gralloc_handle_t* hnd);
static status_t lock(sw_gralloc_handle_t* hnd, int usage,
int l, int t, int w, int h, void** vaddr);
static status_t unlock(sw_gralloc_handle_t* hnd);
};
/*****************************************************************************/
}; // namespace android
#endif /* ANDROID_UI_PRIVATE_SW_GRALLOC_HANDLE_H */
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