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/*
* Copyright (C) 2010 ARM Limited. All rights reserved.
*
* 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 GRALLOC_PRIV_H_
#define GRALLOC_PRIV_H_
#include <stdint.h>
#include <pthread.h>
#include <errno.h>
#include <linux/fb.h>
#include <hardware/gralloc.h>
#include <cutils/native_handle.h>
#include <ump/ump.h>
#define GRALLOC_ARM_UMP_MODULE 1
struct private_handle_t;
struct private_module_t
{
gralloc_module_t base;
private_handle_t* framebuffer;
uint32_t flags;
uint32_t numBuffers;
uint32_t bufferMask;
pthread_mutex_t lock;
buffer_handle_t currentBuffer;
struct fb_var_screeninfo info;
struct fb_fix_screeninfo finfo;
float xdpi;
float ydpi;
float fps;
enum
{
// flag to indicate we'll post this buffer
PRIV_USAGE_LOCKED_FOR_POST = 0x80000000
};
};
#ifdef __cplusplus
struct private_handle_t : public native_handle
{
#else
struct private_handle_t
{
struct native_handle nativeHandle;
#endif
enum
{
PRIV_FLAGS_FRAMEBUFFER = 0x00000001,
PRIV_FLAGS_USES_UMP = 0x00000002,
};
enum
{
LOCK_STATE_WRITE = 1<<31,
LOCK_STATE_MAPPED = 1<<30,
LOCK_STATE_READ_MASK = 0x3FFFFFFF
};
// ints
int magic;
int flags;
int size;
int base;
int lockState;
int writeOwner;
int pid;
// Following members are for UMP memory only
int ump_id;
int ump_mem_handle;
// Following members is for framebuffer only
int fd;
int offset;
#ifdef __cplusplus
static const int sNumInts = 11;
static const int sNumFds = 0;
static const int sMagic = 0x3141592;
private_handle_t(int flags, int size, int base, int lock_state, ump_secure_id secure_id, ump_handle handle):
magic(sMagic),
flags(flags),
size(size),
base(base),
lockState(lock_state),
writeOwner(0),
pid(getpid()),
ump_id((int)secure_id),
ump_mem_handle((int)handle),
fd(0),
offset(0)
{
version = sizeof(native_handle);
numFds = sNumFds;
numInts = sNumInts;
}
private_handle_t(int flags, int size, int base, int lock_state, int fb_file, int fb_offset):
magic(sMagic),
flags(flags),
size(size),
base(base),
lockState(lock_state),
writeOwner(0),
pid(getpid()),
ump_id((int)UMP_INVALID_SECURE_ID),
ump_mem_handle((int)UMP_INVALID_MEMORY_HANDLE),
fd(fb_file),
offset(fb_offset)
{
version = sizeof(native_handle);
numFds = sNumFds;
numInts = sNumInts;
}
~private_handle_t()
{
magic = 0;
}
bool usesPhysicallyContiguousMemory()
{
return (flags & PRIV_FLAGS_FRAMEBUFFER) ? true : false;
}
static int validate(const native_handle* h)
{
const private_handle_t* hnd = (const private_handle_t*)h;
if (!h || h->version != sizeof(native_handle) || h->numInts != sNumInts || h->numFds != sNumFds || hnd->magic != sMagic)
{
return -EINVAL;
}
return 0;
}
static private_handle_t* dynamicCast(const native_handle* in)
{
if (validate(in) == 0)
{
return (private_handle_t*) in;
}
return NULL;
}
#endif
};
#endif /* GRALLOC_PRIV_H_ */
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