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/*
* Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
* Not a Contribution.
*
* Copyright 2015 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 "EGLImageWrapper.h"
#include <cutils/native_handle.h>
#include <gralloc_priv.h>
#include <ui/GraphicBuffer.h>
#include <fcntl.h>
#include <linux/msm_ion.h>
//-----------------------------------------------------------------------------
void free_ion_cookie(int ion_fd, int cookie)
//-----------------------------------------------------------------------------
{
if (ion_fd && !ioctl(ion_fd, ION_IOC_FREE, &cookie)) {
} else {
ALOGE("ION_IOC_FREE failed: ion_fd = %d, cookie = %d", ion_fd, cookie);
}
}
//-----------------------------------------------------------------------------
int get_ion_cookie(int ion_fd, int fd)
//-----------------------------------------------------------------------------
{
int cookie = fd;
struct ion_fd_data fdData;
memset(&fdData, 0, sizeof(fdData));
fdData.fd = fd;
if (ion_fd && !ioctl(ion_fd, ION_IOC_IMPORT, &fdData)) {
cookie = fdData.handle;
} else {
ALOGE("ION_IOC_IMPORT failed: ion_fd = %d, fd = %d", ion_fd, fd);
}
return cookie;
}
//-----------------------------------------------------------------------------
EGLImageWrapper::DeleteEGLImageCallback::DeleteEGLImageCallback(int fd)
//-----------------------------------------------------------------------------
{
ion_fd = fd;
}
//-----------------------------------------------------------------------------
void EGLImageWrapper::DeleteEGLImageCallback::operator()(int& k, EGLImageBuffer*& eglImage)
//-----------------------------------------------------------------------------
{
free_ion_cookie(ion_fd, k);
if( eglImage != 0 )
{
delete eglImage;
}
}
//-----------------------------------------------------------------------------
EGLImageWrapper::EGLImageWrapper()
//-----------------------------------------------------------------------------
{
eglImageBufferMap = new android::LruCache<int, EGLImageBuffer*>(32);
ion_fd = open("/dev/ion", O_RDONLY);
callback = new DeleteEGLImageCallback(ion_fd);
eglImageBufferMap->setOnEntryRemovedListener(callback);
}
//-----------------------------------------------------------------------------
EGLImageWrapper::~EGLImageWrapper()
//-----------------------------------------------------------------------------
{
if( eglImageBufferMap != 0 )
{
eglImageBufferMap->clear();
delete eglImageBufferMap;
eglImageBufferMap = 0;
}
if( callback != 0 )
{
delete callback;
callback = 0;
}
if( ion_fd > 0 )
{
close(ion_fd);
}
ion_fd = -1;
}
//-----------------------------------------------------------------------------
static EGLImageBuffer* L_wrap(const private_handle_t *src)
//-----------------------------------------------------------------------------
{
EGLImageBuffer* result = 0;
native_handle_t *native_handle = const_cast<private_handle_t *>(src);
int flags = android::GraphicBuffer::USAGE_HW_TEXTURE |
android::GraphicBuffer::USAGE_SW_READ_NEVER |
android::GraphicBuffer::USAGE_SW_WRITE_NEVER;
if (src->flags & private_handle_t::PRIV_FLAGS_SECURE_BUFFER) {
flags |= android::GraphicBuffer::USAGE_PROTECTED;
}
android::sp<android::GraphicBuffer> graphicBuffer =
new android::GraphicBuffer(src->unaligned_width, src->unaligned_height, src->format,
#ifndef __NOUGAT__
1, // Layer count
#endif
flags, src->width /*src->stride*/,
native_handle, false);
result = new EGLImageBuffer(graphicBuffer);
return result;
}
//-----------------------------------------------------------------------------
EGLImageBuffer *EGLImageWrapper::wrap(const void *pvt_handle)
//-----------------------------------------------------------------------------
{
const private_handle_t *src = static_cast<const private_handle_t *>(pvt_handle);
int ion_cookie = get_ion_cookie(ion_fd, src->fd);
EGLImageBuffer* eglImage = eglImageBufferMap->get(ion_cookie);
if( eglImage == 0 )
{
eglImage = L_wrap(src);
eglImageBufferMap->put(ion_cookie, eglImage);
}
else {
free_ion_cookie(ion_fd, ion_cookie);
}
return eglImage;
}
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