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360 lines
11 KiB
C++
360 lines
11 KiB
C++
/*
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** bitmap.h
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**
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**---------------------------------------------------------------------------
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** Copyright 2008-2019 Christoph Oelckers
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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**
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*/
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#ifndef __BITMAP_H__
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#define __BITMAP_H__
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#include <algorithm>
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#include "palentry.h"
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#include <string.h>
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#include <stdlib.h>
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#include "templates.h"
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struct FCopyInfo;
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struct FClipRect
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{
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int x, y, width, height;
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bool Intersect(int ix, int iy, int iw, int ih);
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};
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typedef int blend_t;
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enum
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{
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BLENDBITS = 16,
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BLENDUNIT = (1<<BLENDBITS)
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};
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enum ColorType
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{
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CF_RGB,
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CF_RGBT,
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CF_RGBA,
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CF_IA,
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CF_CMYK,
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CF_YCbCr,
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CF_BGR,
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CF_BGRA,
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CF_I16,
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CF_RGB555,
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CF_PalEntry
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};
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class FBitmap
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{
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protected:
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uint8_t *data;
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int Width;
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int Height;
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int Pitch;
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bool FreeBuffer;
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public:
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FBitmap()
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{
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data = NULL;
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Width = Height = 0;
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Pitch = 0;
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FreeBuffer = false;
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}
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FBitmap(uint8_t *buffer, int pitch, int width, int height)
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{
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data = buffer;
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Pitch = pitch;
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Width = width;
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Height = height;
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FreeBuffer = false;
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}
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FBitmap(const FBitmap &other) = delete; // disallow because in nearly all cases this creates an unwanted copy.
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FBitmap(FBitmap &&other)
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{
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data = other.data;
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Pitch = other.Pitch;
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Width = other.Width;
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Height = other.Height;
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FreeBuffer = other.FreeBuffer;
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other.data = nullptr;
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other.FreeBuffer = false;
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}
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FBitmap &operator=(const FBitmap &other) = delete; // disallow because in nearly all cases this creates an unwanted copy. Use Copy instead.
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FBitmap &operator=(FBitmap &&other)
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{
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if (data != nullptr && FreeBuffer) delete[] data;
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data = other.data;
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Pitch = other.Pitch;
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Width = other.Width;
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Height = other.Height;
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FreeBuffer = other.FreeBuffer;
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other.data = nullptr;
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other.FreeBuffer = false;
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return *this;
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}
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void Copy(const FBitmap &other, bool deep = true)
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{
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if (data != nullptr && FreeBuffer) delete[] data;
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Pitch = other.Pitch;
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Width = other.Width;
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Height = other.Height;
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FreeBuffer = deep;
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if (deep)
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{
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data = new uint8_t[Pitch * Height];
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memcpy(data, other.data, Pitch * Height);
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}
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else
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{
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data = other.data;
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}
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}
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~FBitmap()
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{
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Destroy();
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}
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void Destroy()
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{
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if (data != NULL && FreeBuffer) delete [] data;
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data = NULL;
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FreeBuffer = false;
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}
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bool Create (int w, int h)
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{
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Pitch = w*4;
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Width = w;
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Height = h;
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data = new uint8_t[4*w*h];
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memset(data, 0, 4*w*h);
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FreeBuffer = true;
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return data != NULL;
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}
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int GetHeight() const
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{
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return Height;
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}
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int GetWidth() const
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{
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return Width;
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}
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int GetPitch() const
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{
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return Pitch;
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}
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const uint8_t *GetPixels() const
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{
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return data;
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}
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uint8_t *GetPixels()
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{
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return data;
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}
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void CopyPixelDataRGB(int originx, int originy, const uint8_t *patch, int srcwidth,
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int srcheight, int step_x, int step_y, int rotate, int ct,
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/* for PNG tRNS */ int r=0, int g=0, int b=0);
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void CopyPixelData(int originx, int originy, const uint8_t * patch, int srcwidth, int srcheight,
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int step_x, int step_y, int rotate, const PalEntry * palette);
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void Blit(int originx, int originy, const FBitmap &src)
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{
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CopyPixelDataRGB(originx, originy, src.GetPixels(), src.GetWidth(), src.GetHeight(), 4, src.GetWidth()*4, 0, CF_BGRA);
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}
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};
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//===========================================================================
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//
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// True color conversion classes for the different pixel formats
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// used by the supported texture formats
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//
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//===========================================================================
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struct cRGB
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{
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static __forceinline unsigned char R(const unsigned char * p) { return p[0]; }
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static __forceinline unsigned char G(const unsigned char * p) { return p[1]; }
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static __forceinline unsigned char B(const unsigned char * p) { return p[2]; }
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static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return 255; }
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static __forceinline int Gray(const unsigned char * p) { return (p[0]*77 + p[1]*143 + p[2]*36)>>8; }
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};
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struct cRGBT
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{
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static __forceinline unsigned char R(const unsigned char * p) { return p[0]; }
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static __forceinline unsigned char G(const unsigned char * p) { return p[1]; }
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static __forceinline unsigned char B(const unsigned char * p) { return p[2]; }
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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; }
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static __forceinline int Gray(const unsigned char * p) { return (p[0]*77 + p[1]*143 + p[2]*36)>>8; }
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};
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struct cRGBA
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{
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enum
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{
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RED = 0,
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GREEN = 1,
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BLUE = 1,
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ALPHA = 3
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};
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static __forceinline unsigned char R(const unsigned char * p) { return p[0]; }
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static __forceinline unsigned char G(const unsigned char * p) { return p[1]; }
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static __forceinline unsigned char B(const unsigned char * p) { return p[2]; }
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static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return p[3]; }
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static __forceinline int Gray(const unsigned char * p) { return (p[0]*77 + p[1]*143 + p[2]*36)>>8; }
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};
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struct cIA
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{
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static __forceinline unsigned char R(const unsigned char * p) { return p[0]; }
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static __forceinline unsigned char G(const unsigned char * p) { return p[0]; }
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static __forceinline unsigned char B(const unsigned char * p) { return p[0]; }
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static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return p[1]; }
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static __forceinline int Gray(const unsigned char * p) { return p[0]; }
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};
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struct cCMYK
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{
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static __forceinline unsigned char R(const unsigned char * p) { return p[3] - (((256-p[0])*p[3]) >> 8); }
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static __forceinline unsigned char G(const unsigned char * p) { return p[3] - (((256-p[1])*p[3]) >> 8); }
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static __forceinline unsigned char B(const unsigned char * p) { return p[3] - (((256-p[2])*p[3]) >> 8); }
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static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return 255; }
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static __forceinline int Gray(const unsigned char * p) { return (R(p)*77 + G(p)*143 + B(p)*36)>>8; }
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};
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struct cYCbCr
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{
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static __forceinline unsigned char R(const unsigned char * p) { return clamp((int)(p[0] + 1.40200 * (int(p[2]) - 0x80)), 0, 255); }
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static __forceinline unsigned char G(const unsigned char * p) { return clamp((int)(p[0] - 0.34414 * (int(p[1] - 0x80)) - 0.71414 * (int(p[2]) - 0x80)), 0, 255); }
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static __forceinline unsigned char B(const unsigned char * p) { return clamp((int)(p[0] + 1.77200 * (int(p[1]) - 0x80)), 0, 255); }
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static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return 255; }
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static __forceinline int Gray(const unsigned char * p) { return (R(p) * 77 + G(p) * 143 + B(p) * 36) >> 8; }
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};
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struct cBGR
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{
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static __forceinline unsigned char R(const unsigned char * p) { return p[2]; }
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static __forceinline unsigned char G(const unsigned char * p) { return p[1]; }
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static __forceinline unsigned char B(const unsigned char * p) { return p[0]; }
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static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return 255; }
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static __forceinline int Gray(const unsigned char * p) { return (p[2]*77 + p[1]*143 + p[0]*36)>>8; }
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};
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struct cBGRA
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{
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enum
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{
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RED = 2,
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GREEN = 1,
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BLUE = 0,
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ALPHA = 3
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};
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static __forceinline unsigned char R(const unsigned char * p) { return p[2]; }
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static __forceinline unsigned char G(const unsigned char * p) { return p[1]; }
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static __forceinline unsigned char B(const unsigned char * p) { return p[0]; }
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static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return p[3]; }
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static __forceinline int Gray(const unsigned char * p) { return (p[2]*77 + p[1]*143 + p[0]*36)>>8; }
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};
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struct cARGB
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{
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enum
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{
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RED = 1,
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GREEN = 2,
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BLUE = 3,
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ALPHA = 0
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};
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static __forceinline unsigned char R(const unsigned char * p) { return p[1]; }
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static __forceinline unsigned char G(const unsigned char * p) { return p[2]; }
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static __forceinline unsigned char B(const unsigned char * p) { return p[3]; }
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static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return p[0]; }
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static __forceinline int Gray(const unsigned char * p) { return (p[1]*77 + p[2]*143 + p[3]*36)>>8; }
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};
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struct cI16
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{
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static __forceinline unsigned char R(const unsigned char * p) { return p[1]; }
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static __forceinline unsigned char G(const unsigned char * p) { return p[1]; }
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static __forceinline unsigned char B(const unsigned char * p) { return p[1]; }
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static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return 255; }
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static __forceinline int Gray(const unsigned char * p) { return p[1]; }
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};
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struct cRGB555
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{
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static __forceinline unsigned char R(const unsigned char * p) { return (((*(uint16_t*)p)&0x1f)<<3); }
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static __forceinline unsigned char G(const unsigned char * p) { return (((*(uint16_t*)p)&0x3e0)>>2); }
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static __forceinline unsigned char B(const unsigned char * p) { return (((*(uint16_t*)p)&0x7c00)>>7); }
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static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return 255; }
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static __forceinline int Gray(const unsigned char * p) { return (R(p)*77 + G(p)*143 + B(p)*36)>>8; }
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};
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struct cPalEntry
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{
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static __forceinline unsigned char R(const unsigned char * p) { return ((PalEntry*)p)->r; }
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static __forceinline unsigned char G(const unsigned char * p) { return ((PalEntry*)p)->g; }
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static __forceinline unsigned char B(const unsigned char * p) { return ((PalEntry*)p)->b; }
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static __forceinline unsigned char A(const unsigned char * p, uint8_t x, uint8_t y, uint8_t z) { return ((PalEntry*)p)->a; }
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static __forceinline int Gray(const unsigned char * p) { return (R(p)*77 + G(p)*143 + B(p)*36)>>8; }
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};
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struct bCopy
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{
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static __forceinline void OpC(uint8_t &d, uint8_t s, uint8_t a) { d = s; }
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static __forceinline void OpA(uint8_t &d, uint8_t s) { d = s; }
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static __forceinline bool ProcessAlpha0() { return false; }
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};
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#endif
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