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add xbrz

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This commit is contained in:
Tim Felgentreff 2020-04-20 19:56:44 +02:00
parent 60da592a36
commit e37901b33d
10 changed files with 2486 additions and 2 deletions
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8
CMakeLists.txt
View file

@ -345,7 +345,10 @@ set(hqx_SRCS
src/third_party/hqx/src/hq3x.c
src/third_party/hqx/src/hq4x.c
)
source_group(video FILES ${video_SRCS} ${hqx_SRCS})
set(xbrz_SRCS
src/third_party/xbrz/xbrz.cpp
)
source_group(video FILES ${video_SRCS} ${hqx_SRCS} ${xbrz_SRCS})
set(win32_SRCS
src/win32/SetupConsole_win32.cpp
@ -397,6 +400,7 @@ set(stratagus_SRCS
${unit_SRCS}
${video_SRCS}
${hqx_SRCS}
${xbrz_SRCS}
${CMAKE_CURRENT_BINARY_DIR}/tolua.cpp
)
@ -798,7 +802,7 @@ endif()
# Stratagus needs to have char by default signed
# No idea how to tell this to other compilers
if(CMAKE_COMPILER_IS_GNUCXX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsigned-char -std=gnu++0x -Werror")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsigned-char -std=gnu++17 -Werror")
endif()
if(CMAKE_COMPILER_IS_GNUC)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsigned-char")

2
src/include/video.h
View file

@ -215,6 +215,8 @@ extern void* Scale3x_AdvMame3x_Scaler(SDL_Surface *pixels);
extern void* Hq2x_Scaler(SDL_Surface *pixels);
extern void* Hq3x_Scaler(SDL_Surface *pixels);
extern void* Hq4x_Scaler(SDL_Surface *pixels);
extern void* XBRZ2x_Scaler(SDL_Surface *pixels);
extern void* XBRZ3x_Scaler(SDL_Surface *pixels);
class CVideo
{

6
src/stratagus/stratagus.cpp
View file

@ -618,6 +618,12 @@ void ParseCommandLine(int argc, char **argv, Parameters &parameters)
} else if (!strcmp(optarg, "hq4x")) {
Video.Scale = 4;
Video.Scaler = Hq4x_Scaler;
} else if (!strcmp(optarg, "xbrz2x")) {
Video.Scale = 2;
Video.Scaler = XBRZ2x_Scaler;
} else if (!strcmp(optarg, "xbrz3x")) {
Video.Scale = 3;
Video.Scaler = XBRZ3x_Scaler;
}
continue;
case -1:

66
src/third_party/xbrz/Changelog.txt vendored Normal file
View file

@ -0,0 +1,66 @@
xBRZ 1.8 [2019-11-28]
---------------------
Consider ARGB outside area as transparent
Fixed ARGB scaling issue on image borders
xBRZ 1.7 [2019-07-04]
---------------------
Fixed asymmetric color distance
New parameter: "Center direction bias"
xBRZ 1.6 [2018-02-27]
---------------------
Added bilinear scaling
Option to skip color buffer creation
Updated license info
xBRZ 1.5 [2017-08-07]
---------------------
Added RGB conversion routines
xBRZ 1.4 [2015-07-25]
---------------------
Added 6xBRZ scaler
Create color distance buffer lazily
xBRZ 1.3 [2015-04-03]
---------------------
Improved ARGB performance by 15%
Fixed alpha channel gradient bug
xBRZ 1.2 [2014-11-21]
---------------------
Further improved performance by over 30%
xBRZ 1.1 [2014-11-02]
---------------------
Support images with alpha channel
Improved color analysis
xBRZ 1.0 [2013-02-11]
---------------------
Fixed xBRZ scaler compiler issues for GCC
xBRZ 0.2 [2012-12-11]
---------------------
Added 5xBRZ scaler
Optimized xBRZ scaler performance by factor 3
Further improved image quality of xBRZ scaler
xBRZ 0.1 [2012-09-26]
---------------------
Initial release:
- scale while preserving small image features
- support multithreading
- support 64-bit architectures
- support processing image slices

621
src/third_party/xbrz/License.txt vendored Normal file
View file

@ -0,0 +1,621 @@
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versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
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17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS

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src/third_party/xbrz/xbrz.h vendored Normal file
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// ****************************************************************************
// * This file is part of the xBRZ project. It is distributed under *
// * GNU General Public License: https://www.gnu.org/licenses/gpl-3.0 *
// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved *
// * *
// * Additionally and as a special exception, the author gives permission *
// * to link the code of this program with the following libraries *
// * (or with modified versions that use the same licenses), and distribute *
// * linked combinations including the two: MAME, FreeFileSync, Snes9x, ePSXe *
// * You must obey the GNU General Public License in all respects for all of *
// * the code used other than MAME, FreeFileSync, Snes9x, ePSXe. *
// * If you modify this file, you may extend this exception to your version *
// * of the file, but you are not obligated to do so. If you do not wish to *
// * do so, delete this exception statement from your version. *
// ****************************************************************************
#ifndef XBRZ_HEADER_3847894708239054
#define XBRZ_HEADER_3847894708239054
#include <cstddef> //size_t
#include <cstdint> //uint32_t
#include <limits>
#include "xbrz_config.h"
namespace xbrz
{
/*
-------------------------------------------------------------------------
| xBRZ: "Scale by rules" - high quality image upscaling filter by Zenju |
-------------------------------------------------------------------------
using a modified approach of xBR:
http://board.byuu.org/viewtopic.php?f=10&t=2248
- new rule set preserving small image features
- highly optimized for performance
- support alpha channel
- support multithreading
- support 64-bit architectures
- support processing image slices
- support scaling up to 6xBRZ
*/
enum class ColorFormat //from high bits -> low bits, 8 bit per channel
{
RGB, //8 bit for each red, green, blue, upper 8 bits unused
ARGB, //including alpha channel, BGRA byte order on little-endian machines
ARGB_UNBUFFERED, //like ARGB, but without the one-time buffer creation overhead (ca. 100 - 300 ms) at the expense of a slightly slower scaling time
};
const int SCALE_FACTOR_MAX = 6;
/*
-> map source (srcWidth * srcHeight) to target (scale * width x scale * height) image, optionally processing a half-open slice of rows [yFirst, yLast) only
-> if your emulator changes only a few image slices during each cycle (e.g. DOSBox) then there's no need to run xBRZ on the complete image:
Just make sure you enlarge the source image slice by 2 rows on top and 2 on bottom (this is the additional range the xBRZ algorithm is using during analysis)
CAVEAT: If there are multiple changed slices, make sure they do not overlap after adding these additional rows in order to avoid a memory race condition
in the target image data if you are using multiple threads for processing each enlarged slice!
THREAD-SAFETY: - parts of the same image may be scaled by multiple threads as long as the [yFirst, yLast) ranges do not overlap!
- there is a minor inefficiency for the first row of a slice, so avoid processing single rows only; suggestion: process at least 8-16 rows
*/
void scale(size_t factor, //valid range: 2 - SCALE_FACTOR_MAX
const uint32_t* src, uint32_t* trg, int srcWidth, int srcHeight,
ColorFormat colFmt,
const ScalerCfg& cfg = ScalerCfg(),
int yFirst = 0, int yLast = std::numeric_limits<int>::max()); //slice of source image
void bilinearScale(const uint32_t* src, int srcWidth, int srcHeight,
/**/ uint32_t* trg, int trgWidth, int trgHeight);
void nearestNeighborScale(const uint32_t* src, int srcWidth, int srcHeight,
/**/ uint32_t* trg, int trgWidth, int trgHeight);
//parameter tuning
bool equalColorTest(uint32_t col1, uint32_t col2, ColorFormat colFmt, double luminanceWeight, double equalColorTolerance);
}
#endif

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// ****************************************************************************
// * This file is part of the xBRZ project. It is distributed under *
// * GNU General Public License: https://www.gnu.org/licenses/gpl-3.0 *
// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved *
// * *
// * Additionally and as a special exception, the author gives permission *
// * to link the code of this program with the following libraries *
// * (or with modified versions that use the same licenses), and distribute *
// * linked combinations including the two: MAME, FreeFileSync, Snes9x, ePSXe *
// * You must obey the GNU General Public License in all respects for all of *
// * the code used other than MAME, FreeFileSync, Snes9x, ePSXe. *
// * If you modify this file, you may extend this exception to your version *
// * of the file, but you are not obligated to do so. If you do not wish to *
// * do so, delete this exception statement from your version. *
// ****************************************************************************
#ifndef XBRZ_CONFIG_HEADER_284578425345
#define XBRZ_CONFIG_HEADER_284578425345
//do NOT include any headers here! used by xBRZ_dll!!!
namespace xbrz
{
struct ScalerCfg
{
double luminanceWeight = 1;
double equalColorTolerance = 30;
double centerDirectionBias = 4;
double dominantDirectionThreshold = 3.6;
double steepDirectionThreshold = 2.2;
double newTestAttribute = 0; //unused; test new parameters
};
}
#endif

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// ****************************************************************************
// * This file is part of the xBRZ project. It is distributed under *
// * GNU General Public License: https://www.gnu.org/licenses/gpl-3.0 *
// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved *
// * *
// * Additionally and as a special exception, the author gives permission *
// * to link the code of this program with the following libraries *
// * (or with modified versions that use the same licenses), and distribute *
// * linked combinations including the two: MAME, FreeFileSync, Snes9x, ePSXe *
// * You must obey the GNU General Public License in all respects for all of *
// * the code used other than MAME, FreeFileSync, Snes9x, ePSXe. *
// * If you modify this file, you may extend this exception to your version *
// * of the file, but you are not obligated to do so. If you do not wish to *
// * do so, delete this exception statement from your version. *
// ****************************************************************************
#ifndef XBRZ_TOOLS_H_825480175091875
#define XBRZ_TOOLS_H_825480175091875
#include <cassert>
#include <algorithm>
#include <type_traits>
namespace xbrz
{
template <uint32_t N> inline
unsigned char getByte(uint32_t val) { return static_cast<unsigned char>((val >> (8 * N)) & 0xff); }
inline unsigned char getAlpha(uint32_t pix) { return getByte<3>(pix); }
inline unsigned char getRed (uint32_t pix) { return getByte<2>(pix); }
inline unsigned char getGreen(uint32_t pix) { return getByte<1>(pix); }
inline unsigned char getBlue (uint32_t pix) { return getByte<0>(pix); }
inline uint32_t makePixel(unsigned char a, unsigned char r, unsigned char g, unsigned char b) { return (a << 24) | (r << 16) | (g << 8) | b; }
inline uint32_t makePixel( unsigned char r, unsigned char g, unsigned char b) { return (r << 16) | (g << 8) | b; }
inline uint32_t rgb555to888(uint16_t pix) { return ((pix & 0x7C00) << 9) | ((pix & 0x03E0) << 6) | ((pix & 0x001F) << 3); }
inline uint32_t rgb565to888(uint16_t pix) { return ((pix & 0xF800) << 8) | ((pix & 0x07E0) << 5) | ((pix & 0x001F) << 3); }
inline uint16_t rgb888to555(uint32_t pix) { return static_cast<uint16_t>(((pix & 0xF80000) >> 9) | ((pix & 0x00F800) >> 6) | ((pix & 0x0000F8) >> 3)); }
inline uint16_t rgb888to565(uint32_t pix) { return static_cast<uint16_t>(((pix & 0xF80000) >> 8) | ((pix & 0x00FC00) >> 5) | ((pix & 0x0000F8) >> 3)); }
template <class Pix> inline
Pix* byteAdvance(Pix* ptr, int bytes)
{
using PixNonConst = typename std::remove_cv<Pix>::type;
using PixByte = typename std::conditional<std::is_same<Pix, PixNonConst>::value, char, const char>::type;
static_assert(std::is_integral<PixNonConst>::value, "Pix* is expected to be cast-able to char*");
return reinterpret_cast<Pix*>(reinterpret_cast<PixByte*>(ptr) + bytes);
}
//fill block with the given color
template <class Pix> inline
void fillBlock(Pix* trg, int pitch /*[bytes]*/, Pix col, int blockWidth, int blockHeight)
{
//for (int y = 0; y < blockHeight; ++y, trg = byteAdvance(trg, pitch))
// std::fill(trg, trg + blockWidth, col);
for (int y = 0; y < blockHeight; ++y, trg = byteAdvance(trg, pitch))
for (int x = 0; x < blockWidth; ++x)
trg[x] = col;
}
//nearest-neighbor (going over target image - slow for upscaling, since source is read multiple times missing out on cache! Fast for similar image sizes!)
template <class PixSrc, class PixTrg, class PixConverter>
void nearestNeighborScale(const PixSrc* src, int srcWidth, int srcHeight, int srcPitch /*[bytes]*/,
/**/ PixTrg* trg, int trgWidth, int trgHeight, int trgPitch /*[bytes]*/,
int yFirst, int yLast, PixConverter pixCvrt /*convert PixSrc to PixTrg*/)
{
static_assert(std::is_integral<PixSrc>::value, "PixSrc* is expected to be cast-able to char*");
static_assert(std::is_integral<PixTrg>::value, "PixTrg* is expected to be cast-able to char*");
static_assert(std::is_same<decltype(pixCvrt(PixSrc())), PixTrg>::value, "PixConverter returning wrong pixel format");
if (srcPitch < srcWidth * static_cast<int>(sizeof(PixSrc)) ||
trgPitch < trgWidth * static_cast<int>(sizeof(PixTrg)))
{
assert(false);
return;
}
yFirst = std::max(yFirst, 0);
yLast = std::min(yLast, trgHeight);
if (yFirst >= yLast || srcHeight <= 0 || srcWidth <= 0) return;
for (int y = yFirst; y < yLast; ++y)
{
const int ySrc = srcHeight * y / trgHeight;
const PixSrc* const srcLine = byteAdvance(src, ySrc * srcPitch);
PixTrg* const trgLine = byteAdvance(trg, y * trgPitch);
for (int x = 0; x < trgWidth; ++x)
{
const int xSrc = srcWidth * x / trgWidth;
trgLine[x] = pixCvrt(srcLine[xSrc]);
}
}
}
//nearest-neighbor (going over source image - fast for upscaling, since source is read only once
template <class PixSrc, class PixTrg, class PixConverter>
void nearestNeighborScaleOverSource(const PixSrc* src, int srcWidth, int srcHeight, int srcPitch /*[bytes]*/,
/**/ PixTrg* trg, int trgWidth, int trgHeight, int trgPitch /*[bytes]*/,
int yFirst, int yLast, PixConverter pixCvrt /*convert PixSrc to PixTrg*/)
{
static_assert(std::is_integral<PixSrc>::value, "PixSrc* is expected to be cast-able to char*");
static_assert(std::is_integral<PixTrg>::value, "PixTrg* is expected to be cast-able to char*");
static_assert(std::is_same<decltype(pixCvrt(PixSrc())), PixTrg>::value, "PixConverter returning wrong pixel format");
if (srcPitch < srcWidth * static_cast<int>(sizeof(PixSrc)) ||
trgPitch < trgWidth * static_cast<int>(sizeof(PixTrg)))
{
assert(false);
return;
}
yFirst = std::max(yFirst, 0);
yLast = std::min(yLast, srcHeight);
if (yFirst >= yLast || trgWidth <= 0 || trgHeight <= 0) return;
for (int y = yFirst; y < yLast; ++y)
{
//mathematically: ySrc = floor(srcHeight * yTrg / trgHeight)
// => search for integers in: [ySrc, ySrc + 1) * trgHeight / srcHeight
//keep within for loop to support MT input slices!
const int yTrgFirst = ( y * trgHeight + srcHeight - 1) / srcHeight; //=ceil(y * trgHeight / srcHeight)
const int yTrgLast = ((y + 1) * trgHeight + srcHeight - 1) / srcHeight; //=ceil(((y + 1) * trgHeight) / srcHeight)
const int blockHeight = yTrgLast - yTrgFirst;
if (blockHeight > 0)
{
const PixSrc* srcLine = byteAdvance(src, y * srcPitch);
/**/ PixTrg* trgLine = byteAdvance(trg, yTrgFirst * trgPitch);
int xTrgFirst = 0;
for (int x = 0; x < srcWidth; ++x)
{
const int xTrgLast = ((x + 1) * trgWidth + srcWidth - 1) / srcWidth;
const int blockWidth = xTrgLast - xTrgFirst;
if (blockWidth > 0)
{
xTrgFirst = xTrgLast;
const auto trgPix = pixCvrt(srcLine[x]);
fillBlock(trgLine, trgPitch, trgPix, blockWidth, blockHeight);
trgLine += blockWidth;
}
}
}
}
}
template <class PixTrg, class PixConverter>
void bilinearScale(const uint32_t* src, int srcWidth, int srcHeight, int srcPitch,
/**/ PixTrg* trg, int trgWidth, int trgHeight, int trgPitch,
int yFirst, int yLast, PixConverter pixCvrt /*convert uint32_t to PixTrg*/)
{
static_assert(std::is_integral<PixTrg>::value, "PixTrg* is expected to be cast-able to char*");
static_assert(std::is_same<decltype(pixCvrt(uint32_t())), PixTrg>::value, "PixConverter returning wrong pixel format");
if (srcPitch < srcWidth * static_cast<int>(sizeof(uint32_t)) ||
trgPitch < trgWidth * static_cast<int>(sizeof(PixTrg)))
{
assert(false);
return;
}
yFirst = std::max(yFirst, 0);
yLast = std::min(yLast, trgHeight);
if (yFirst >= yLast || srcHeight <= 0 || srcWidth <= 0) return;
const double scaleX = static_cast<double>(trgWidth ) / srcWidth;
const double scaleY = static_cast<double>(trgHeight) / srcHeight;
//perf notes:
// -> double-based calculation is (slightly) faster than float
// -> pre-calculation gives significant boost; std::vector<> memory allocation is negligible!
struct CoeffsX
{
int x1 = 0;
int x2 = 0;
double xx1 = 0;
double x2x = 0;
};
std::vector<CoeffsX> buf(trgWidth);
for (int x = 0; x < trgWidth; ++x)
{
const int x1 = srcWidth * x / trgWidth;
int x2 = x1 + 1;
if (x2 == srcWidth) --x2;
const double xx1 = x / scaleX - x1;
const double x2x = 1 - xx1;
buf[x] = { x1, x2, xx1, x2x };
}
for (int y = yFirst; y < yLast; ++y)
{
const int y1 = srcHeight * y / trgHeight;
int y2 = y1 + 1;
if (y2 == srcHeight) --y2;
const double yy1 = y / scaleY - y1;
const double y2y = 1 - yy1;
const uint32_t* const srcLine = byteAdvance(src, y1 * srcPitch);
const uint32_t* const srcLineNext = byteAdvance(src, y2 * srcPitch);
PixTrg* const trgLine = byteAdvance(trg, y * trgPitch);
for (int x = 0; x < trgWidth; ++x)
{
//perf: do NOT "simplify" the variable layout without measurement!
const int x1 = buf[x].x1;
const int x2 = buf[x].x2;
const double xx1 = buf[x].xx1;
const double x2x = buf[x].x2x;
const double x2xy2y = x2x * y2y;
const double xx1y2y = xx1 * y2y;
const double x2xyy1 = x2x * yy1;
const double xx1yy1 = xx1 * yy1;
auto interpolate = [=](int offset)
{
/* https://en.wikipedia.org/wiki/Bilinear_interpolation
(c11(x2 - x) + c21(x - x1)) * (y2 - y ) +
(c12(x2 - x) + c22(x - x1)) * (y - y1) */
const auto c11 = (srcLine [x1] >> (8 * offset)) & 0xff;
const auto c21 = (srcLine [x2] >> (8 * offset)) & 0xff;
const auto c12 = (srcLineNext[x1] >> (8 * offset)) & 0xff;
const auto c22 = (srcLineNext[x2] >> (8 * offset)) & 0xff;
return c11 * x2xy2y + c21 * xx1y2y +
c12 * x2xyy1 + c22 * xx1yy1;
};
const double bi = interpolate(0);
const double gi = interpolate(1);
const double ri = interpolate(2);
const double ai = interpolate(3);
const auto b = static_cast<uint32_t>(bi + 0.5);
const auto g = static_cast<uint32_t>(gi + 0.5);
const auto r = static_cast<uint32_t>(ri + 0.5);
const auto a = static_cast<uint32_t>(ai + 0.5);
const uint32_t trgPix = (a << 24) | (r << 16) | (g << 8) | b;
trgLine[x] = pixCvrt(trgPix);
}
}
}
}
#endif //XBRZ_TOOLS_H_825480175091875

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src/video/video.cpp
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@ -96,6 +96,7 @@
extern "C" {
#include "hqx/src/hqx.h"
}
#include "xbrz/xbrz.h"
#include "SDL.h"
@ -697,4 +698,52 @@ void *Hq4x_Scaler(SDL_Surface *s) {
return out;
}
void *XBRZ2x_Scaler(SDL_Surface *s) {
Assert(s->format->Ashift == 24);
Assert(s->format->Rshift == 16);
Assert(s->format->Gshift == 8);
Assert(s->format->Bshift == 0);
Assert(Video.Scale == 2);
Assert(s->format->BitsPerPixel == 32);
Uint32 *in = (Uint32 *)s->pixels;
Uint32 *out = (Uint32 *)s->userdata;
int sliceHeight = 40;
int stepEnd = Video.Height - sliceHeight - 2;
int maxHeight = Video.Height;
int stepSize = sliceHeight;
#pragma omp parallel for
for (int y = 0; y <= maxHeight; y += stepSize) {
xbrz::scale(2, in, out, Video.Width, Video.Height, xbrz::ColorFormat::RGB,
xbrz::ScalerCfg(), y, std::min(y + sliceHeight, maxHeight)); // we ignore the alpha channel
}
return out;
}
void *XBRZ3x_Scaler(SDL_Surface *s) {
Assert(s->format->Ashift == 24);
Assert(s->format->Rshift == 16);
Assert(s->format->Gshift == 8);
Assert(s->format->Bshift == 0);
Assert(Video.Scale == 3);
Assert(s->format->BitsPerPixel == 32);
Uint32 *in = (Uint32 *)s->pixels;
Uint32 *out = (Uint32 *)s->userdata;
int sliceHeight = 40;
int stepEnd = Video.Height - sliceHeight - 2;
int maxHeight = Video.Height;
int stepSize = sliceHeight;
#pragma omp parallel for
for (int y = 0; y <= maxHeight; y += stepSize) {
xbrz::scale(3, in, out, Video.Width, Video.Height, xbrz::ColorFormat::RGB,
xbrz::ScalerCfg(), y, std::min(y + sliceHeight, maxHeight)); // we ignore the alpha channel
}
return out;
}
//@}