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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.
*/
#include <limits.h>
#include <errno.h>
#include <pthread.h>
#include <unistd.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include <hardware/hardware.h>
#include <hardware/gralloc.h>
#include "gralloc_priv.h"
#include "exynos_format.h"
#include <ion/ion.h>
#include <linux/ion.h>
/*****************************************************************************/
static int gralloc_map(gralloc_module_t const* module, buffer_handle_t handle)
{
size_t chroma_vstride = 0;
size_t chroma_size = 0;
size_t ext_size = 256;
private_handle_t *hnd = (private_handle_t*)handle;
switch (hnd->format) {
case HAL_PIXEL_FORMAT_EXYNOS_YCbCr_420_SP_M_TILED:
chroma_vstride = ALIGN(hnd->height / 2, 32);
chroma_size = chroma_vstride * hnd->stride + ext_size;
break;
case HAL_PIXEL_FORMAT_EXYNOS_YCrCb_420_SP_M:
case HAL_PIXEL_FORMAT_EXYNOS_YCrCb_420_SP_M_FULL:
case HAL_PIXEL_FORMAT_EXYNOS_YCbCr_420_SP_M:
chroma_size = hnd->stride * ALIGN(hnd->vstride / 2, 8) + ext_size;
break;
case HAL_PIXEL_FORMAT_EXYNOS_YV12_M:
case HAL_PIXEL_FORMAT_EXYNOS_YCbCr_420_P_M:
chroma_size = (hnd->vstride / 2) * ALIGN(hnd->stride / 2, 16) + ext_size;
break;
default:
break;
}
void* mappedAddress = mmap(0, hnd->size, PROT_READ|PROT_WRITE, MAP_SHARED,
hnd->fd, 0);
if (mappedAddress == MAP_FAILED) {
ALOGE("%s: could not mmap %s", __func__, strerror(errno));
return -errno;
}
ALOGV("%s: base %p %d %d %d %d\n", __func__, mappedAddress, hnd->size,
hnd->width, hnd->height, hnd->stride);
hnd->base = mappedAddress;
if (hnd->fd1 >= 0) {
void *mappedAddress1 = (void*)mmap(0, chroma_size, PROT_READ|PROT_WRITE,
MAP_SHARED, hnd->fd1, 0);
hnd->base1 = mappedAddress1;
}
if (hnd->fd2 >= 0) {
void *mappedAddress2 = (void*)mmap(0, chroma_size, PROT_READ|PROT_WRITE,
MAP_SHARED, hnd->fd2, 0);
hnd->base2 = mappedAddress2;
}
return 0;
}
static int gralloc_unmap(gralloc_module_t const* module, buffer_handle_t handle)
{
private_handle_t* hnd = (private_handle_t*)handle;
size_t chroma_vstride = 0;
size_t chroma_size = 0;
size_t ext_size = 256;
switch (hnd->format) {
case HAL_PIXEL_FORMAT_EXYNOS_YCbCr_420_SP_M_TILED:
chroma_vstride = ALIGN(hnd->height / 2, 32);
chroma_size = chroma_vstride * hnd->stride + ext_size;
break;
case HAL_PIXEL_FORMAT_EXYNOS_YCrCb_420_SP_M:
case HAL_PIXEL_FORMAT_EXYNOS_YCrCb_420_SP_M_FULL:
case HAL_PIXEL_FORMAT_EXYNOS_YCbCr_420_SP_M:
chroma_size = hnd->stride * ALIGN(hnd->vstride / 2, 8) + ext_size;
break;
case HAL_PIXEL_FORMAT_EXYNOS_YV12_M:
case HAL_PIXEL_FORMAT_EXYNOS_YCbCr_420_P_M:
chroma_size = (hnd->vstride / 2) * ALIGN(hnd->stride / 2, 16) + ext_size;
break;
default:
break;
}
if (!hnd->base)
return 0;
if (munmap(hnd->base, hnd->size) < 0) {
ALOGE("%s :could not unmap %s %p %d", __func__, strerror(errno),
hnd->base, hnd->size);
}
ALOGV("%s: base %p %d %d %d %d\n", __func__, hnd->base, hnd->size,
hnd->width, hnd->height, hnd->stride);
hnd->base = 0;
if (hnd->fd1 >= 0) {
if (!hnd->base1)
return 0;
if (munmap(hnd->base1, chroma_size) < 0) {
ALOGE("%s :could not unmap %s %p %d", __func__, strerror(errno),
hnd->base1, chroma_size);
}
hnd->base1 = 0;
}
if (hnd->fd2 >= 0) {
if (!hnd->base2)
return 0;
if (munmap(hnd->base2, chroma_size) < 0) {
ALOGE("%s :could not unmap %s %p %d", __func__, strerror(errno),
hnd->base2, chroma_size);
}
hnd->base2 = 0;
}
return 0;
}
/*****************************************************************************/
int getIonFd(gralloc_module_t const *module)
{
private_module_t* m = const_cast<private_module_t*>(reinterpret_cast<const private_module_t*>(module));
if (m->ionfd == -1)
m->ionfd = ion_open();
return m->ionfd;
}
static pthread_mutex_t sMapLock = PTHREAD_MUTEX_INITIALIZER;
/*****************************************************************************/
int gralloc_register_buffer(gralloc_module_t const* module,
buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
private_handle_t* hnd = (private_handle_t*)handle;
ALOGV("%s: base %p %d %d %d %d\n", __func__, hnd->base, hnd->size,
hnd->width, hnd->height, hnd->stride);
int ret;
ret = ion_import(getIonFd(module), hnd->fd, &hnd->handle);
if (ret)
ALOGE("error importing handle %d %x\n", hnd->fd, hnd->format);
if (hnd->fd1 >= 0) {
ret = ion_import(getIonFd(module), hnd->fd1, &hnd->handle1);
if (ret)
ALOGE("error importing handle1 %d %x\n", hnd->fd1, hnd->format);
}
if (hnd->fd2 >= 0) {
ret = ion_import(getIonFd(module), hnd->fd2, &hnd->handle2);
if (ret)
ALOGE("error importing handle2 %d %x\n", hnd->fd2, hnd->format);
}
return ret;
}
int gralloc_unregister_buffer(gralloc_module_t const* module,
buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
private_handle_t* hnd = (private_handle_t*)handle;
ALOGV("%s: base %p %d %d %d %d\n", __func__, hnd->base, hnd->size,
hnd->width, hnd->height, hnd->stride);
gralloc_unmap(module, handle);
if (hnd->handle)
ion_free(getIonFd(module), hnd->handle);
if (hnd->handle1)
ion_free(getIonFd(module), hnd->handle1);
if (hnd->handle2)
ion_free(getIonFd(module), hnd->handle2);
return 0;
}
int gralloc_lock(gralloc_module_t const* module,
buffer_handle_t handle, int usage,
int l, int t, int w, int h,
void** vaddr)
{
// this is called when a buffer is being locked for software
// access. in thin implementation we have nothing to do since
// not synchronization with the h/w is needed.
// typically this is used to wait for the h/w to finish with
// this buffer if relevant. the data cache may need to be
// flushed or invalidated depending on the usage bits and the
// hardware.
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
private_handle_t* hnd = (private_handle_t*)handle;
if (!hnd->base)
gralloc_map(module, hnd);
*vaddr = (void*)hnd->base;
if (hnd->fd1 >= 0)
vaddr[1] = (void*)hnd->base1;
if (hnd->fd2 >= 0)
vaddr[2] = (void*)hnd->base2;
return 0;
}
int gralloc_unlock(gralloc_module_t const* module,
buffer_handle_t handle)
{
// we're done with a software buffer. nothing to do in this
// implementation. typically this is used to flush the data cache.
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
private_handle_t* hnd = (private_handle_t*)handle;
if (!((hnd->flags & GRALLOC_USAGE_SW_READ_MASK) == GRALLOC_USAGE_SW_READ_OFTEN))
return 0;
ion_sync_fd(getIonFd(module), hnd->fd);
if (hnd->fd1 >= 0)
ion_sync_fd(getIonFd(module), hnd->fd1);
if (hnd->fd2 >= 0)
ion_sync_fd(getIonFd(module), hnd->fd2);
return 0;
}
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