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/*
* Copyright (C) 2013 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 <limits.h>
#include <sys/cdefs.h>
#include <hardware/gralloc.h>
#include <pthread.h>
#include <errno.h>
#include <unistd.h>
#include <cutils/native_handle.h>
#include <linux/fb.h>
/*****************************************************************************/
struct private_module_t;
struct private_handle_t;
typedef int ion_user_handle_t;
struct private_module_t {
gralloc_module_t base;
struct private_handle_t* framebuffer;
uint32_t flags;
uint32_t numBuffers;
uint32_t bufferMask;
pthread_mutex_t lock;
unsigned int refcount;
buffer_handle_t currentBuffer;
int ionfd;
struct fb_var_screeninfo info;
struct fb_fix_screeninfo finfo;
int xres;
int yres;
int line_length;
float xdpi;
float ydpi;
float fps;
void *queue;
pthread_mutex_t queue_lock;
};
/*****************************************************************************/
#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,
PRIV_FLAGS_USES_ION = 0x00000020
};
// file-descriptors
int fd;
int fd1;
int fd2;
// ints
int magic;
int flags;
int size;
int offset;
int format;
int width;
int height;
int stride;
int vstride;
// FIXME: the attributes below should be out-of-line
void *base;
void *base1;
void *base2;
ion_user_handle_t handle;
ion_user_handle_t handle1;
ion_user_handle_t handle2;
#ifdef __cplusplus
static const int sNumFds = 3;
static const int sNumInts = 20;
static const int sMagic = 0x3141592;
private_handle_t(int fd, int size, int flags) :
fd(fd), fd1(-1), fd2(-1), magic(sMagic), flags(flags), size(size),
offset(0), format(0), width(0), height(0), stride(0),
vstride(0), base(0), base1(0), base2(0), handle(0), handle1(0),
handle2(0)
{
version = sizeof(native_handle);
numInts = sNumInts + 2;
numFds = sNumFds - 2;
}
private_handle_t(int fd, int size, int flags, int w,
int h, int format, int stride, int vstride) :
fd(fd), fd1(-1), fd2(-1), magic(sMagic), flags(flags), size(size),
offset(0), format(format), width(w), height(h), stride(stride),
vstride(vstride), base(0), base1(0), base2(0), handle(0), handle1(0),
handle2(0)
{
version = sizeof(native_handle);
numInts = sNumInts + 2;
numFds = sNumFds - 2;
}
private_handle_t(int fd, int fd1, int size, int flags, int w,
int h, int format, int stride, int vstride) :
fd(fd), fd1(fd1), fd2(-1), magic(sMagic), flags(flags), size(size),
offset(0), format(format), width(w), height(h), stride(stride),
vstride(vstride), base(0), base1(0), base2(0), handle(0), handle1(0),
handle2(0)
{
version = sizeof(native_handle);
numInts = sNumInts + 1;
numFds = sNumFds - 1;
}
private_handle_t(int fd, int fd1, int fd2, int size, int flags, int w,
int h, int format, int stride, int vstride) :
fd(fd), fd1(fd1), fd2(fd2), magic(sMagic), flags(flags), size(size),
offset(0), format(format), width(w), height(h), stride(stride),
vstride(vstride), base(0), base1(0), base2(0), handle(0), handle1(0),
handle2(0)
{
version = sizeof(native_handle);
numInts = sNumInts;
numFds = sNumFds;
}
~private_handle_t() {
magic = 0;
}
static int validate(const native_handle* h) {
const private_handle_t* hnd = (const private_handle_t*)h;
#if 0
if (!h) {
ALOGE("invalid gralloc handle (NULL)");
} else if (h->version != sizeof(native_handle)) {
ALOGE("invalid gralloc handle (at %p) - version=%lu (expected=%lu)",
reinterpret_cast<void *>(const_cast<native_handle *>(h)),
(unsigned long)h->version,
(unsigned long)sizeof(native_handle));
} else if (hnd->numInts + hnd->numFds != sNumInts + sNumFds) {
ALOGE("invalid gralloc handle (at %p) - "
"hnd->numInts(%d) + hnd->numFds(%d) != sNumInts(%d) + sNumFds(%d)",
reinterpret_cast<void *>(const_cast<native_handle *>(h)),
hnd->numInts, hnd->numFds, sNumInts, sNumFds);
} else if (hnd->magic != sMagic) {
ALOGE("invalid gralloc handle (at %p) - "
"hnd->magic(%x) != sMagic(%x)",
reinterpret_cast<void *>(const_cast<native_handle *>(h)),
hnd->magic, sMagic);
}
#endif
if (!h || h->version != sizeof(native_handle) ||
hnd->numInts + hnd->numFds != sNumInts + sNumFds ||
hnd->magic != sMagic)
{
void *handle = reinterpret_cast<void *>(const_cast<native_handle *>(h));
if (handle != 0) {
ALOGE("invalid gralloc handle (at %p)", handle);
}
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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