Cog/Frameworks/OpenMPT/OpenMPT/common/Dither.h
Christopher Snowhill 731e52c440 Build libOpenMPT from source once again
Bundle libOpenMPT as a dynamic framework, which should be safe once
again, now that there is only one version to bundle. Also, now it is
using the versions of libvorbisfile and libmpg123 that are bundled with
the player, instead of compiling minimp3 and stbvorbis.

Signed-off-by: Christopher Snowhill <kode54@gmail.com>
2022-06-30 22:57:30 -07:00

86 lines
1.9 KiB
C++

/*
* Dither.h
* --------
* Purpose: Dithering when converting to lower resolution sample formats.
* Notes : (currently none)
* Authors: Olivier Lapicque
* OpenMPT Devs
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
*/
#pragma once
#include "openmpt/all/BuildSettings.hpp"
#include "mpt/base/macros.hpp"
#include "mpt/string/types.hpp"
#include "openmpt/soundbase/Dither.hpp"
#include "openmpt/soundbase/DitherModPlug.hpp"
#include "openmpt/soundbase/DitherNone.hpp"
#include "openmpt/soundbase/DitherSimple.hpp"
#include "mptRandom.h"
#include <vector>
#include <variant>
#include <cstddef>
OPENMPT_NAMESPACE_BEGIN
using Dither_Default = Dither_Simple;
class DitherNamesOpenMPT
{
public:
static mpt::ustring GetModeName(std::size_t mode)
{
mpt::ustring result;
switch(mode)
{
case 0:
// no dither
result = MPT_USTRING("no");
break;
case 1:
// chosen by OpenMPT code, might change
result = MPT_USTRING("default");
break;
case 2:
// rectangular, 0.5 bit depth, no noise shaping (original ModPlug Tracker)
result = MPT_USTRING("0.5 bit");
break;
case 3:
// rectangular, 1 bit depth, simple 1st order noise shaping
result = MPT_USTRING("1 bit");
break;
default:
result = MPT_USTRING("");
break;
}
return result;
}
};
using DithersOpenMPT =
Dithers<std::variant<MultiChannelDither<Dither_None>, MultiChannelDither<Dither_Default>, MultiChannelDither<Dither_ModPlug>, MultiChannelDither<Dither_Simple>>, DitherNamesOpenMPT, 4, 1, 0, mpt::good_prng>;
struct DithersWrapperOpenMPT
: DithersOpenMPT
{
template <typename Trd>
DithersWrapperOpenMPT(Trd &rd, std::size_t mode = DithersOpenMPT::DefaultDither, std::size_t channels = DithersOpenMPT::DefaultChannels)
: DithersOpenMPT(rd, mode, channels)
{
return;
}
};
OPENMPT_NAMESPACE_END