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/*
* Copyright (C) 2020 ARM Limited. All rights reserved.
*
* Copyright 2016 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 "SharedMetadata.h"
#include "Allocator.h"
#include "core/mali_gralloc_bufferallocation.h"
#include "core/mali_gralloc_bufferdescriptor.h"
#include "core/format_info.h"
#include "allocator/mali_gralloc_ion.h"
#include "allocator/mali_gralloc_shared_memory.h"
#include "gralloc_priv.h"
namespace arm
{
namespace allocator
{
namespace common
{
void allocate(const buffer_descriptor_t &bufferDescriptor, uint32_t count, IAllocator::allocate_cb hidl_cb,
std::function<int(const buffer_descriptor_t *, buffer_handle_t *)> fb_allocator)
{
#if DISABLE_FRAMEBUFFER_HAL
GRALLOC_UNUSED(fb_allocator);
#endif
Error error = Error::NONE;
int stride = 0;
std::vector<hidl_handle> grallocBuffers;
gralloc_buffer_descriptor_t grallocBufferDescriptor[1];
grallocBufferDescriptor[0] = (gralloc_buffer_descriptor_t)(&bufferDescriptor);
grallocBuffers.reserve(count);
for (uint32_t i = 0; i < count; i++)
{
buffer_handle_t tmpBuffer = nullptr;
int allocResult;
#if (DISABLE_FRAMEBUFFER_HAL != 1)
if (((bufferDescriptor.producer_usage & GRALLOC_USAGE_HW_FB) ||
(bufferDescriptor.consumer_usage & GRALLOC_USAGE_HW_FB)) &&
fb_allocator)
{
allocResult = fb_allocator(&bufferDescriptor, &tmpBuffer);
}
else
#endif
{
allocResult = mali_gralloc_buffer_allocate(grallocBufferDescriptor, 1, &tmpBuffer, nullptr);
if (allocResult != 0)
{
MALI_GRALLOC_LOGE("%s, buffer allocation failed with %d", __func__, allocResult);
error = Error::NO_RESOURCES;
break;
}
auto hnd = const_cast<private_handle_t *>(reinterpret_cast<const private_handle_t *>(tmpBuffer));
hnd->imapper_version = HIDL_MAPPER_VERSION_SCALED;
hnd->reserved_region_size = bufferDescriptor.reserved_size;
hnd->attr_size = mapper::common::shared_metadata_size() + hnd->reserved_region_size;
if (hnd->get_usage() & GRALLOC_USAGE_ROIINFO)
{
hnd->attr_size += 32768;
}
/* TODO: must do error checking */
mali_gralloc_ion_allocate_attr(hnd);
/* TODO: error check for failure */
hnd->attr_base = mmap(nullptr, hnd->attr_size, PROT_READ | PROT_WRITE,
MAP_SHARED, hnd->get_share_attr_fd(), 0);
memset(hnd->attr_base, 0, hnd->attr_size);
mapper::common::shared_metadata_init(hnd->attr_base, bufferDescriptor.name);
const uint32_t base_format = bufferDescriptor.alloc_format & MALI_GRALLOC_INTFMT_FMT_MASK;
const uint64_t usage = bufferDescriptor.consumer_usage | bufferDescriptor.producer_usage;
android_dataspace_t dataspace;
get_format_dataspace(base_format, usage, hnd->width, hnd->height, &dataspace);
mapper::common::set_dataspace(hnd, static_cast<mapper::common::Dataspace>(dataspace));
/*
* We need to set attr_base to MAP_FAILED before the HIDL callback
* to avoid sending an invalid pointer to the client process.
*
* hnd->attr_base = mmap(...);
* hidl_callback(hnd); // client receives hnd->attr_base = <dangling pointer>
*/
munmap(hnd->attr_base, hnd->attr_size);
hnd->attr_base = 0;
}
int tmpStride = 0;
tmpStride = bufferDescriptor.pixel_stride;
if (stride == 0)
{
stride = tmpStride;
}
else if (stride != tmpStride)
{
/* Stride must be the same for all allocations */
mali_gralloc_buffer_free(tmpBuffer);
stride = 0;
error = Error::UNSUPPORTED;
break;
}
grallocBuffers.emplace_back(hidl_handle(tmpBuffer));
}
/* Populate the array of buffers for application consumption */
hidl_vec<hidl_handle> hidlBuffers;
if (error == Error::NONE)
{
hidlBuffers.setToExternal(grallocBuffers.data(), grallocBuffers.size());
}
hidl_cb(error, stride, hidlBuffers);
/* The application should import the Gralloc buffers using IMapper for
* further usage. Free the allocated buffers in IAllocator context
*/
for (const auto &buffer : grallocBuffers)
{
mali_gralloc_buffer_free(buffer.getNativeHandle());
}
}
} // namespace common
} // namespace allocator
} // namespace arm
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