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raze/source/common/textures/bitmap.h
Christoph Oelckers 4e53f3bd81 - backend update from GZDoom for adding vcpkg integration
2023-09-02 09:46:20 +02:00

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/*
** bitmap.h
**
**---------------------------------------------------------------------------
** Copyright 2008 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
**
*/
#ifndef __BITMAP_H__
#define __BITMAP_H__
#include "palentry.h"
struct FCopyInfo;
struct FClipRect
{
int x, y, width, height;
bool Intersect(int ix, int iy, int iw, int ih);
};
typedef int blend_t;
enum
{
BLENDBITS = 16,
BLENDUNIT = (1<<BLENDBITS)
};
enum ColorType
{
CF_RGB,
CF_RGBT,
CF_RGBA,
CF_IA,
CF_CMYK,
CF_YCbCr,
CF_YCCK,
CF_BGR,
CF_BGRA,
CF_I16,
CF_RGB555,
CF_PalEntry
};
class FBitmap
{
protected:
uint8_t *data;
int Width;
int Height;
int Pitch;
bool FreeBuffer;
FClipRect ClipRect;
public:
FBitmap()
{
data = NULL;
Width = Height = 0;
Pitch = 0;
FreeBuffer = false;
ClipRect.x = ClipRect.y = ClipRect.width = ClipRect.height = 0;
}
FBitmap(uint8_t *buffer, int pitch, int width, int height)
{
data = buffer;
Pitch = pitch;
Width = width;
Height = height;
FreeBuffer = false;
ClipRect.x = ClipRect.y = 0;
ClipRect.width = width;
ClipRect.height = height;
}
FBitmap(const FBitmap &other) = delete; // disallow because in nearly all cases this creates an unwanted copy.
FBitmap(FBitmap &&other)
{
data = other.data;
Pitch = other.Pitch;
Width = other.Width;
Height = other.Height;
FreeBuffer = other.FreeBuffer;
ClipRect = other.ClipRect;
other.data = nullptr;
other.FreeBuffer = false;
}
FBitmap &operator=(const FBitmap &other) = delete; // disallow because in nearly all cases this creates an unwanted copy. Use Copy instead.
FBitmap &operator=(FBitmap &&other)
{
if (data != nullptr && FreeBuffer) delete[] data;
data = other.data;
Pitch = other.Pitch;
Width = other.Width;
Height = other.Height;
FreeBuffer = other.FreeBuffer;
ClipRect = other.ClipRect;
other.data = nullptr;
other.FreeBuffer = false;
return *this;
}
void Copy(const FBitmap &other, bool deep = true)
{
if (data != nullptr && FreeBuffer) delete[] data;
Pitch = other.Pitch;
Width = other.Width;
Height = other.Height;
FreeBuffer = deep;
ClipRect = other.ClipRect;
if (deep)
{
data = new uint8_t[Pitch * Height];
memcpy(data, other.data, Pitch * Height);
}
else
{
data = other.data;
}
}
~FBitmap()
{
Destroy();
}
void Destroy()
{
if (data != NULL && FreeBuffer) delete [] data;
data = NULL;
FreeBuffer = false;
}
bool Create (int w, int h)
{
Pitch = w*4;
Width = w;
Height = h;
data = new uint8_t[4*w*h];
memset(data, 0, 4*w*h);
FreeBuffer = true;
ClipRect.x = ClipRect.y = 0;
ClipRect.width = w;
ClipRect.height = h;
return data != NULL;
}
int GetHeight() const
{
return Height;
}
int GetWidth() const
{
return Width;
}
int GetPitch() const
{
return Pitch;
}
int GetBufferSize() const
{
return Pitch * Height;
}
const uint8_t *GetPixels() const
{
return data;
}
uint8_t *GetPixels()
{
return data;
}
void SetClipRect(FClipRect &clip)
{
ClipRect = clip;
}
void IntersectClipRect(FClipRect &clip)
{
ClipRect.Intersect(clip.x, clip.y, clip.width, clip.height);
}
void IntersectClipRect(int cx, int cy, int cw, int ch)
{
ClipRect.Intersect(cx, cy, cw, ch);
}
const FClipRect &GetClipRect() const
{
return ClipRect;
}
void Zero();
void CopyPixelDataRGB(int originx, int originy, const uint8_t *patch, int srcwidth,
int srcheight, int step_x, int step_y, int rotate, int ct, FCopyInfo *inf = NULL,
/* for PNG tRNS */ int r=0, int g=0, int b=0);
void CopyPixelData(int originx, int originy, const uint8_t * patch, int srcwidth, int srcheight,
int step_x, int step_y, int rotate, const PalEntry * palette, FCopyInfo *inf = NULL);
void Blit(int originx, int originy, const FBitmap &src, int width, int height, int rotate = 0, FCopyInfo *inf = NULL)
{
CopyPixelDataRGB(originx, originy, src.GetPixels(), width, height, 4, src.GetWidth()*4, rotate, CF_BGRA, inf);
}
void Blit(int originx, int originy, const FBitmap &src, FCopyInfo *inf = NULL)
{
CopyPixelDataRGB(originx, originy, src.GetPixels(), src.GetWidth(), src.GetHeight(), 4, src.GetWidth()*4, 0, CF_BGRA, inf);
}
};
bool ClipCopyPixelRect(const FClipRect *cr, int &originx, int &originy,
const uint8_t *&patch, int &srcwidth, int &srcheight,
int &step_x, int &step_y, int rotate);
//===========================================================================
//
// True color conversion classes for the different pixel formats
// used by the supported texture formats
//
//===========================================================================
struct cRGB
{
static __forceinline unsigned char R(const unsigned char * p) { return p[0]; }
static __forceinline unsigned char G(const unsigned char * p) { return p[1]; }
static __forceinline unsigned char B(const unsigned char * p) { return p[2]; }
static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return 255; }
static __forceinline int Gray(const unsigned char * p) { return (p[0]*77 + p[1]*143 + p[2]*36)>>8; }
};
struct cRGBT
{
static __forceinline unsigned char R(const unsigned char * p) { return p[0]; }
static __forceinline unsigned char G(const unsigned char * p) { return p[1]; }
static __forceinline unsigned char B(const unsigned char * p) { return p[2]; }
static __forceinline unsigned char A(const unsigned char * p, uint8_t r, uint8_t g, uint8_t b) { return (p[0] != r || p[1] != g || p[2] != b) ? 255 : 0; }
static __forceinline int Gray(const unsigned char * p) { return (p[0]*77 + p[1]*143 + p[2]*36)>>8; }
};
struct cRGBA
{
enum
{
RED = 0,
GREEN = 1,
BLUE = 1,
ALPHA = 3
};
static __forceinline unsigned char R(const unsigned char * p) { return p[0]; }
static __forceinline unsigned char G(const unsigned char * p) { return p[1]; }
static __forceinline unsigned char B(const unsigned char * p) { return p[2]; }
static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return p[3]; }
static __forceinline int Gray(const unsigned char * p) { return (p[0]*77 + p[1]*143 + p[2]*36)>>8; }
};
struct cIA
{
static __forceinline unsigned char R(const unsigned char * p) { return p[0]; }
static __forceinline unsigned char G(const unsigned char * p) { return p[0]; }
static __forceinline unsigned char B(const unsigned char * p) { return p[0]; }
static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return p[1]; }
static __forceinline int Gray(const unsigned char * p) { return p[0]; }
};
struct cCMYK
{
static __forceinline unsigned char R(const unsigned char * p) { return p[3] - (((256-p[0])*p[3]) >> 8); }
static __forceinline unsigned char G(const unsigned char * p) { return p[3] - (((256-p[1])*p[3]) >> 8); }
static __forceinline unsigned char B(const unsigned char * p) { return p[3] - (((256-p[2])*p[3]) >> 8); }
static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return 255; }
static __forceinline int Gray(const unsigned char * p) { return (R(p)*77 + G(p)*143 + B(p)*36)>>8; }
};
struct cYCbCr
{
static __forceinline unsigned char R(const unsigned char * p) { return std::clamp((int)(p[0] + 1.40200 * (int(p[2]) - 0x80)), 0, 255); }
static __forceinline unsigned char G(const unsigned char * p) { return std::clamp((int)(p[0] - 0.34414 * (int(p[1] - 0x80)) - 0.71414 * (int(p[2]) - 0x80)), 0, 255); }
static __forceinline unsigned char B(const unsigned char * p) { return std::clamp((int)(p[0] + 1.77200 * (int(p[1]) - 0x80)), 0, 255); }
static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return 255; }
static __forceinline int Gray(const unsigned char * p) { return (R(p) * 77 + G(p) * 143 + B(p) * 36) >> 8; }
};
struct cYCCK
{
static __forceinline unsigned char R(const unsigned char* p) { auto myR = cYCbCr::R(p); return p[3] - ((myR * p[3]) >> 8); }
static __forceinline unsigned char G(const unsigned char* p) { auto myG = cYCbCr::G(p); return p[3] - ((myG * p[3]) >> 8); }
static __forceinline unsigned char B(const unsigned char* p) { auto myB = cYCbCr::B(p); return p[3] - ((myB * p[3]) >> 8); }
static __forceinline unsigned char A(const unsigned char* p, uint8_t x, uint8_t y, uint8_t z) { return 255; }
static __forceinline int Gray(const unsigned char* p) { return (R(p) * 77 + G(p) * 143 + B(p) * 36) >> 8; }
};
struct cBGR
{
static __forceinline unsigned char R(const unsigned char * p) { return p[2]; }
static __forceinline unsigned char G(const unsigned char * p) { return p[1]; }
static __forceinline unsigned char B(const unsigned char * p) { return p[0]; }
static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return 255; }
static __forceinline int Gray(const unsigned char * p) { return (p[2]*77 + p[1]*143 + p[0]*36)>>8; }
};
struct cBGRA
{
enum
{
RED = 2,
GREEN = 1,
BLUE = 0,
ALPHA = 3
};
static __forceinline unsigned char R(const unsigned char * p) { return p[2]; }
static __forceinline unsigned char G(const unsigned char * p) { return p[1]; }
static __forceinline unsigned char B(const unsigned char * p) { return p[0]; }
static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return p[3]; }
static __forceinline int Gray(const unsigned char * p) { return (p[2]*77 + p[1]*143 + p[0]*36)>>8; }
};
struct cARGB
{
enum
{
RED = 1,
GREEN = 2,
BLUE = 3,
ALPHA = 0
};
static __forceinline unsigned char R(const unsigned char * p) { return p[1]; }
static __forceinline unsigned char G(const unsigned char * p) { return p[2]; }
static __forceinline unsigned char B(const unsigned char * p) { return p[3]; }
static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return p[0]; }
static __forceinline int Gray(const unsigned char * p) { return (p[1]*77 + p[2]*143 + p[3]*36)>>8; }
};
struct cI16
{
static __forceinline unsigned char R(const unsigned char * p) { return p[1]; }
static __forceinline unsigned char G(const unsigned char * p) { return p[1]; }
static __forceinline unsigned char B(const unsigned char * p) { return p[1]; }
static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return 255; }
static __forceinline int Gray(const unsigned char * p) { return p[1]; }
};
struct cRGB555
{
static __forceinline unsigned char R(const unsigned char * p) { return (((*(uint16_t*)p)&0x1f)<<3); }
static __forceinline unsigned char G(const unsigned char * p) { return (((*(uint16_t*)p)&0x3e0)>>2); }
static __forceinline unsigned char B(const unsigned char * p) { return (((*(uint16_t*)p)&0x7c00)>>7); }
static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return 255; }
static __forceinline int Gray(const unsigned char * p) { return (R(p)*77 + G(p)*143 + B(p)*36)>>8; }
};
struct cPalEntry
{
static __forceinline unsigned char R(const unsigned char * p) { return ((PalEntry*)p)->r; }
static __forceinline unsigned char G(const unsigned char * p) { return ((PalEntry*)p)->g; }
static __forceinline unsigned char B(const unsigned char * p) { return ((PalEntry*)p)->b; }
static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return ((PalEntry*)p)->a; }
static __forceinline int Gray(const unsigned char * p) { return (R(p)*77 + G(p)*143 + B(p)*36)>>8; }
};
enum EBlend
{
BLEND_NONE = 0,
BLEND_ICEMAP = 1,
BLEND_DESATURATE1 = 2,
BLEND_DESATURATE31 = 32,
BLEND_SPECIALCOLORMAP1 = 33,
BLEND_MODULATE = -1,
BLEND_OVERLAY = -2,
};
enum ECopyOp
{
OP_COPY,
OP_BLEND,
OP_ADD,
OP_SUBTRACT,
OP_REVERSESUBTRACT,
OP_MODULATE,
OP_COPYALPHA,
OP_COPYNEWALPHA,
OP_OVERLAY,
OP_OVERWRITE
};
struct FCopyInfo
{
ECopyOp op;
EBlend blend;
blend_t blendcolor[4];
blend_t alpha;
blend_t invalpha;
PalEntry *palette;
};
struct bOverwrite
{
static __forceinline void OpC(uint8_t &d, uint8_t s, uint8_t a, FCopyInfo *i) { d = s; }
static __forceinline void OpA(uint8_t &d, uint8_t s, FCopyInfo *i) { d = s; }
static __forceinline bool ProcessAlpha0() { return true; }
};
struct bCopy
{
static __forceinline void OpC(uint8_t &d, uint8_t s, uint8_t a, FCopyInfo *i) { d = s; }
static __forceinline void OpA(uint8_t &d, uint8_t s, FCopyInfo *i) { d = s; }
static __forceinline bool ProcessAlpha0() { return false; }
};
struct bCopyNewAlpha
{
static __forceinline void OpC(uint8_t &d, uint8_t s, uint8_t a, FCopyInfo *i) { d = s; }
static __forceinline void OpA(uint8_t &d, uint8_t s, FCopyInfo *i) { d = (s*i->alpha) >> BLENDBITS; }
static __forceinline bool ProcessAlpha0() { return false; }
};
struct bCopyAlpha
{
static __forceinline void OpC(uint8_t &d, uint8_t s, uint8_t a, FCopyInfo *i) { d = (s*a + d*(255-a))/255; }
static __forceinline void OpA(uint8_t &d, uint8_t s, FCopyInfo *i) { d = s; }
static __forceinline bool ProcessAlpha0() { return false; }
};
struct bOverlay
{
static __forceinline void OpC(uint8_t &d, uint8_t s, uint8_t a, FCopyInfo *i) { d = (s*a + d*(255-a))/255; }
static __forceinline void OpA(uint8_t &d, uint8_t s, FCopyInfo *i) { d = std::max(s,d); }
static __forceinline bool ProcessAlpha0() { return false; }
};
struct bBlend
{
static __forceinline void OpC(uint8_t &d, uint8_t s, uint8_t a, FCopyInfo *i) { d = (d*i->invalpha + s*i->alpha) >> BLENDBITS; }
static __forceinline void OpA(uint8_t &d, uint8_t s, FCopyInfo *i) { d = s; }
static __forceinline bool ProcessAlpha0() { return false; }
};
struct bAdd
{
static __forceinline void OpC(uint8_t &d, uint8_t s, uint8_t a, FCopyInfo *i) { d = std::min<int>((d*BLENDUNIT + s*i->alpha) >> BLENDBITS, 255); }
static __forceinline void OpA(uint8_t &d, uint8_t s, FCopyInfo *i) { d = s; }
static __forceinline bool ProcessAlpha0() { return false; }
};
struct bSubtract
{
static __forceinline void OpC(uint8_t &d, uint8_t s, uint8_t a, FCopyInfo *i) { d = std::max<int>((d*BLENDUNIT - s*i->alpha) >> BLENDBITS, 0); }
static __forceinline void OpA(uint8_t &d, uint8_t s, FCopyInfo *i) { d = s; }
static __forceinline bool ProcessAlpha0() { return false; }
};
struct bReverseSubtract
{
static __forceinline void OpC(uint8_t &d, uint8_t s, uint8_t a, FCopyInfo *i) { d = std::max<int>((-d*BLENDUNIT + s*i->alpha) >> BLENDBITS, 0); }
static __forceinline void OpA(uint8_t &d, uint8_t s, FCopyInfo *i) { d = s; }
static __forceinline bool ProcessAlpha0() { return false; }
};
struct bModulate
{
static __forceinline void OpC(uint8_t &d, uint8_t s, uint8_t a, FCopyInfo *i) { d = (s*d)/255; }
static __forceinline void OpA(uint8_t &d, uint8_t s, FCopyInfo *i) { d = s; }
static __forceinline bool ProcessAlpha0() { return false; }
};
#endif
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