mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 11:32:43 +00:00
71aac25635
Like the non-zero tokens and segmentation IDs, these can be moved into the tile decoding loop for above context and allocated by TileContext for left context.
122 lines
2.4 KiB
C++
122 lines
2.4 KiB
C++
/*
|
|
* Copyright (c) 2021, Hunter Salyer <thefalsehonesty@gmail.com>
|
|
* Copyright (c) 2022, Gregory Bertilson <zaggy1024@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Types.h>
|
|
#include <LibGfx/Size.h>
|
|
|
|
#include "LookupTables.h"
|
|
|
|
namespace Video::VP9 {
|
|
|
|
// FIXME: Once everything is working, replace this with plain clamp
|
|
// since parameter order is different
|
|
template<typename T>
|
|
T clip_3(T x, T y, T z)
|
|
{
|
|
return clamp(z, x, y);
|
|
}
|
|
|
|
template<typename T>
|
|
u16 clip_1(u8 bit_depth, T x)
|
|
{
|
|
if (x < 0) {
|
|
return 0u;
|
|
}
|
|
const T max = (1u << bit_depth) - 1u;
|
|
if (x > max)
|
|
return max;
|
|
return x;
|
|
}
|
|
|
|
template<typename T, typename C>
|
|
inline T brev(C bit_count, T value)
|
|
{
|
|
T result = 0;
|
|
for (C i = 0; i < bit_count; i++) {
|
|
auto bit = (value >> i) & 1;
|
|
result |= bit << (bit_count - 1 - i);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
inline BlockSubsize get_subsampled_block_size(BlockSubsize size, bool subsampling_x, bool subsampling_y)
|
|
{
|
|
return ss_size_lookup[size < Block_8x8 ? Block_8x8 : size][subsampling_x][subsampling_y];
|
|
}
|
|
|
|
inline Gfx::Size<u8> block_size_to_blocks(BlockSubsize size)
|
|
{
|
|
return Gfx::Size<u8>(num_8x8_blocks_wide_lookup[size], num_8x8_blocks_high_lookup[size]);
|
|
}
|
|
|
|
inline Gfx::Size<u8> block_size_to_sub_blocks(BlockSubsize size)
|
|
{
|
|
return Gfx::Size<u8>(num_4x4_blocks_wide_lookup[size], num_4x4_blocks_high_lookup[size]);
|
|
}
|
|
|
|
template<Integral T>
|
|
inline T blocks_to_superblocks(T blocks)
|
|
{
|
|
return blocks >> 3;
|
|
}
|
|
|
|
template<Integral T>
|
|
inline T superblocks_to_blocks(T superblocks)
|
|
{
|
|
return superblocks << 3;
|
|
}
|
|
|
|
template<Integral T>
|
|
inline T blocks_ceiled_to_superblocks(T blocks)
|
|
{
|
|
return blocks_to_superblocks(blocks + 7);
|
|
}
|
|
|
|
template<Integral T>
|
|
inline T blocks_to_sub_blocks(T blocks)
|
|
{
|
|
return blocks << 1;
|
|
}
|
|
|
|
template<Integral T>
|
|
inline T sub_blocks_to_blocks(T sub_blocks)
|
|
{
|
|
return sub_blocks >> 1;
|
|
}
|
|
|
|
template<Integral T>
|
|
inline T sub_blocks_to_pixels(T sub_blocks)
|
|
{
|
|
return sub_blocks << 2;
|
|
}
|
|
|
|
template<Integral T>
|
|
inline T pixels_to_sub_blocks(T pixels)
|
|
{
|
|
return pixels >> 2;
|
|
}
|
|
|
|
template<Integral T>
|
|
inline T blocks_to_pixels(T blocks)
|
|
{
|
|
return sub_blocks_to_pixels(blocks_to_sub_blocks(blocks));
|
|
}
|
|
|
|
template<Integral T>
|
|
inline T pixels_to_blocks(T pixels)
|
|
{
|
|
return sub_blocks_to_blocks(pixels_to_sub_blocks(pixels));
|
|
}
|
|
|
|
inline u8 transform_size_to_sub_blocks(TransformSize transform_size)
|
|
{
|
|
return 1 << transform_size;
|
|
}
|
|
|
|
}
|