/*
 * Copyright (c) 2016-2018 ARM Limited.
 *
 * SPDX-License-Identifier: MIT
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
#include "arm_compute/runtime/MultiImage.h"

#include "arm_compute/core/Error.h"
#include "arm_compute/core/TensorInfo.h"
#include "arm_compute/core/Utils.h"
#include "arm_compute/runtime/TensorAllocator.h"

using namespace arm_compute;

MultiImage::MultiImage()
 : _info(), _plane()
{
}

const MultiImageInfo *MultiImage::info() const
{
 return &_info;
}

void MultiImage::init(unsigned int width, unsigned int height, Format format)
{
 internal_init(width, height, format, false);
}

void MultiImage::init_auto_padding(unsigned int width, unsigned int height, Format format)
{
 internal_init(width, height, format, true);
}

void MultiImage::internal_init(unsigned int width, unsigned int height, Format format, bool auto_padding)
{
 TensorShape shape = adjust_odd_shape(TensorShape{ width, height }, format);
 TensorInfo info(shape, Format::U8);

 if(auto_padding)
 {
 info.auto_padding();
 }

 switch(format)
 {
 case Format::U8:
 case Format::S16:
 case Format::U16:
 case Format::S32:
 case Format::F16:
 case Format::F32:
 case Format::U32:
 case Format::RGB888:
 case Format::RGBA8888:
 case Format::YUYV422:
 case Format::UYVY422:
 {
 TensorInfo info_full(shape, format);

 if(auto_padding)
 {
 info_full.auto_padding();
 }

 std::get<0>(_plane).allocator()->init(info_full);
 break;
 }
 case Format::NV12:
 case Format::NV21:
 {
 const TensorShape shape_uv88 = calculate_subsampled_shape(shape, Format::UV88);
 TensorInfo info_uv88(shape_uv88, Format::UV88);

 if(auto_padding)
 {
 info_uv88.auto_padding();
 }

 std::get<0>(_plane).allocator()->init(info);
 std::get<1>(_plane).allocator()->init(info_uv88);
 break;
 }
 case Format::IYUV:
 {
 const TensorShape shape_sub2 = calculate_subsampled_shape(shape, Format::IYUV);
 TensorInfo info_sub2(shape_sub2, Format::U8);

 if(auto_padding)
 {
 info_sub2.auto_padding();
 }

 std::get<0>(_plane).allocator()->init(info);
 std::get<1>(_plane).allocator()->init(info_sub2);
 std::get<2>(_plane).allocator()->init(info_sub2);
 break;
 }
 case Format::YUV444:
 std::get<0>(_plane).allocator()->init(info);
 std::get<1>(_plane).allocator()->init(info);
 std::get<2>(_plane).allocator()->init(info);
 break;
 default:
 ARM_COMPUTE_ERROR("Not supported");
 break;
 }

 _info.init(shape.x(), shape.y(), format);
}

void MultiImage::allocate()
{
 switch(_info.format())
 {
 case Format::U8:
 case Format::S16:
 case Format::U16:
 case Format::S32:
 case Format::F16:
 case Format::F32:
 case Format::U32:
 case Format::RGB888:
 case Format::RGBA8888:
 case Format::YUYV422:
 case Format::UYVY422:
 std::get<0>(_plane).allocator()->allocate();
 break;
 case Format::NV12:
 case Format::NV21:
 std::get<0>(_plane).allocator()->allocate();
 std::get<1>(_plane).allocator()->allocate();
 break;
 case Format::IYUV:
 case Format::YUV444:
 std::get<0>(_plane).allocator()->allocate();
 std::get<1>(_plane).allocator()->allocate();
 std::get<2>(_plane).allocator()->allocate();
 break;
 default:
 ARM_COMPUTE_ERROR("Not supported");
 break;
 }
}

void MultiImage::create_subimage(MultiImage *image, const Coordinates &coords, unsigned int width, unsigned int height)
{
 arm_compute::Format format = image->info()->format();
 const TensorInfo info(width, height, Format::U8);

 switch(format)
 {
 case Format::U8:
 case Format::S16:
 case Format::U16:
 case Format::S32:
 case Format::F32:
 case Format::F16:
 case Format::U32:
 case Format::RGB888:
 case Format::RGBA8888:
 case Format::YUYV422:
 case Format::UYVY422:
 {
 const TensorInfo info_full(width, height, format);
 std::get<0>(_plane).allocator()->init(*dynamic_cast<Image *>(image->plane(0))->allocator(), coords, info_full);
 break;
 }
 case Format::NV12:
 case Format::NV21:
 {
 const TensorInfo info_uv88(width / 2, height / 2, Format::UV88);
 std::get<0>(_plane).allocator()->init(*dynamic_cast<Image *>(image->plane(0))->allocator(), coords, info);
 std::get<1>(_plane).allocator()->init(*dynamic_cast<Image *>(image->plane(1))->allocator(), coords, info_uv88);
 break;
 }
 case Format::IYUV:
 {
 const TensorInfo info_sub2(width / 2, height / 2, Format::U8);
 std::get<0>(_plane).allocator()->init(*dynamic_cast<Image *>(image->plane(0))->allocator(), coords, info);
 std::get<1>(_plane).allocator()->init(*dynamic_cast<Image *>(image->plane(1))->allocator(), coords, info_sub2);
 std::get<2>(_plane).allocator()->init(*dynamic_cast<Image *>(image->plane(2))->allocator(), coords, info_sub2);
 break;
 }
 case Format::YUV444:
 std::get<0>(_plane).allocator()->init(*dynamic_cast<Image *>(image->plane(0))->allocator(), coords, info);
 std::get<1>(_plane).allocator()->init(*dynamic_cast<Image *>(image->plane(0))->allocator(), coords, info);
 std::get<2>(_plane).allocator()->init(*dynamic_cast<Image *>(image->plane(0))->allocator(), coords, info);
 break;
 default:
 ARM_COMPUTE_ERROR("Not supported");
 break;
 }

 _info.init(width, height, format);
}

Image *MultiImage::plane(unsigned int index)
{
 return &_plane[index];
}

const Image *MultiImage::plane(unsigned int index) const
{
 return &_plane[index];
}