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/*
* Copyright (C) 2020 Arm Limited.
*
* 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.
*/
#pragma once
#include <optional>
#include <vector>
#include <VendorVideoAPI.h>
#include "gralloctypes/Gralloc4.h"
namespace arm
{
namespace mapper
{
namespace common
{
using aidl::android::hardware::graphics::common::Rect;
using aidl::android::hardware::graphics::common::Smpte2086;
using aidl::android::hardware::graphics::common::Cta861_3;
using aidl::android::hardware::graphics::common::BlendMode;
using aidl::android::hardware::graphics::common::Dataspace;
template <typename T>
struct aligned_optional
{
enum class state : uint32_t
{
vacant,
occupied,
};
state item_state { state::vacant };
T item {};
aligned_optional() = default;
aligned_optional(T initial_value)
: item_state(state::occupied)
, item(initial_value)
{
}
aligned_optional(std::optional<T> std_optional)
: item_state(std_optional ? state::occupied : state::vacant)
{
if (std_optional)
{
item = *std_optional;
}
}
std::optional<T> to_std_optional() const
{
switch (item_state)
{
case state::vacant: return std::nullopt;
case state::occupied: return std::make_optional(item);
}
}
};
template <typename T, size_t N>
struct aligned_inline_vector
{
uint32_t size;
T contents[N];
constexpr uint32_t capacity() const
{
return N;
}
const T *data() const
{
return &contents[0];
}
T *data()
{
return &contents[0];
}
};
struct shared_metadata
{
ExynosVideoMeta video_private_data;
aligned_optional<BlendMode> blend_mode {};
aligned_optional<Rect> crop {};
aligned_optional<Cta861_3> cta861_3 {};
aligned_optional<Dataspace> dataspace {};
aligned_optional<Smpte2086> smpte2086 {};
aligned_inline_vector<uint8_t, 2048> smpte2094_40 {};
aligned_inline_vector<char, 256> name {};
shared_metadata() = default;
shared_metadata(std::string_view in_name)
{
name.size = std::min(name.capacity(), static_cast<uint32_t>(in_name.size()));
std::memcpy(name.data(), in_name.data(), name.size);
}
std::string_view get_name() const
{
return name.size > 0
? std::string_view(name.data(), name.size)
: std::string_view();
}
};
/* TODO: convert alignment assert taking video metadata into account */
#if 0
static_assert(offsetof(shared_metadata, blend_mode) == 0, "bad alignment");
static_assert(sizeof(shared_metadata::blend_mode) == 8, "bad size");
static_assert(offsetof(shared_metadata, crop) == 8, "bad alignment");
static_assert(sizeof(shared_metadata::crop) == 20, "bad size");
static_assert(offsetof(shared_metadata, cta861_3) == 28, "bad alignment");
static_assert(sizeof(shared_metadata::cta861_3) == 12, "bad size");
static_assert(offsetof(shared_metadata, dataspace) == 40, "bad alignment");
static_assert(sizeof(shared_metadata::dataspace) == 8, "bad size");
static_assert(offsetof(shared_metadata, smpte2086) == 48, "bad alignment");
static_assert(sizeof(shared_metadata::smpte2086) == 44, "bad size");
static_assert(offsetof(shared_metadata, smpte2094_40) == 92, "bad alignment");
static_assert(sizeof(shared_metadata::smpte2094_40) == 2052, "bad size");
static_assert(offsetof(shared_metadata, name) == 2144, "bad alignment");
static_assert(sizeof(shared_metadata::name) == 260, "bad size");
static_assert(alignof(shared_metadata) == 4, "bad alignment");
static_assert(sizeof(shared_metadata) == 2404, "bad size");
#endif
} // namespace common
} // namespace mapper
} // namespace arm
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