You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
50 lines
1.9 KiB
C++
50 lines
1.9 KiB
C++
/* Python-rgbcx Texture Compression Library
|
|
Copyright (C) 2021 Andrew Cassidy <drewcassidy@me.com>
|
|
Partially derived from rgbcx.h written by Richard Geldreich <richgel99@gmail.com>
|
|
and licenced under the public domain
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <cassert>
|
|
#include <cstdint>
|
|
#include <stdexcept>
|
|
|
|
#include "../../BlockDecoder.h"
|
|
#include "../../BlockView.h"
|
|
#include "../../ndebug.h"
|
|
#include "BC4Block.h"
|
|
|
|
namespace quicktex {
|
|
class BC4Decoder : public BlockDecoderTemplate<BC4Block, 4, 4> {
|
|
public:
|
|
BC4Decoder(uint8_t channel = 3) { SetChannel(channel); }
|
|
|
|
void DecodeBlock(Color4x4 dest, BC4Block *const block) const noexcept(ndebug) override { DecodeBlock(dest.GetChannel(_channel), block); }
|
|
void DecodeBlock(Color4x4 dest, BC4Block *const block, uint8_t channel) const noexcept(ndebug) { DecodeBlock(dest.GetChannel(channel), block); }
|
|
void DecodeBlock(Byte4x4 dest, BC4Block *const block) const noexcept(ndebug);
|
|
|
|
uint8_t GetChannel() const { return _channel; }
|
|
void SetChannel(uint8_t channel) {
|
|
if (channel >= 4U) throw std::invalid_argument("Channel out of range");
|
|
_channel = channel;
|
|
}
|
|
|
|
private:
|
|
uint8_t _channel;
|
|
};
|
|
} // namespace quicktex
|