340 lines
11 KiB
C++
340 lines
11 KiB
C++
/*************************************************************************/
|
|
/* image.h */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* http://www.godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
#ifndef IMAGE_H
|
|
#define IMAGE_H
|
|
|
|
#include "dvector.h"
|
|
#include "color.h"
|
|
#include "math_2d.h"
|
|
/**
|
|
* @author Juan Linietsky <reduzio@gmail.com>
|
|
*
|
|
* Image storage class. This is used to store an image in user memory, as well as
|
|
* providing some basic methods for image manipulation.
|
|
* Images can be loaded from a file, or registered into the Render object as textures.
|
|
*/
|
|
|
|
|
|
|
|
class Image {
|
|
|
|
enum {
|
|
MAX_WIDTH=4096, // force a limit somehow
|
|
MAX_HEIGHT=4096 // force a limit somehow
|
|
};
|
|
public:
|
|
|
|
enum Format {
|
|
FORMAT_GRAYSCALE, ///< one byte per pixel, 0-255
|
|
FORMAT_INTENSITY, ///< one byte per pixel, 0-255
|
|
FORMAT_GRAYSCALE_ALPHA, ///< two bytes per pixel, 0-255. alpha 0-255
|
|
FORMAT_RGB, ///< one byte R, one byte G, one byte B
|
|
FORMAT_RGBA, ///< one byte R, one byte G, one byte B, one byte A
|
|
FORMAT_INDEXED, ///< index byte 0-256, and after image end, 256*3 bytes of palette
|
|
FORMAT_INDEXED_ALPHA, ///< index byte 0-256, and after image end, 256*4 bytes of palette (alpha)
|
|
FORMAT_YUV_422,
|
|
FORMAT_YUV_444,
|
|
FORMAT_BC1, // DXT1
|
|
FORMAT_BC2, // DXT3
|
|
FORMAT_BC3, // DXT5
|
|
FORMAT_BC4, // ATI1
|
|
FORMAT_BC5, // ATI2
|
|
FORMAT_PVRTC2,
|
|
FORMAT_PVRTC2_ALPHA,
|
|
FORMAT_PVRTC4,
|
|
FORMAT_PVRTC4_ALPHA,
|
|
FORMAT_ETC, // regular ETC, no transparency
|
|
FORMAT_ATC,
|
|
FORMAT_ATC_ALPHA_EXPLICIT,
|
|
FORMAT_ATC_ALPHA_INTERPOLATED,
|
|
/*FORMAT_ETC2_R, for the future..
|
|
FORMAT_ETC2_RG,
|
|
FORMAT_ETC2_RGB,
|
|
FORMAT_ETC2_RGBA1,
|
|
FORMAT_ETC2_RGBA,*/
|
|
FORMAT_CUSTOM,
|
|
|
|
FORMAT_MAX
|
|
};
|
|
|
|
enum Interpolation {
|
|
|
|
INTERPOLATE_NEAREST,
|
|
INTERPOLATE_BILINEAR,
|
|
/* INTERPOLATE GAUSS */
|
|
};
|
|
|
|
static Image (*_png_mem_loader_func)(const uint8_t* p_png);
|
|
static void (*_image_compress_bc_func)(Image *);
|
|
static void (*_image_compress_pvrtc2_func)(Image *);
|
|
static void (*_image_compress_pvrtc4_func)(Image *);
|
|
static void (*_image_compress_etc_func)(Image *);
|
|
static void (*_image_decompress_pvrtc)(Image *);
|
|
static void (*_image_decompress_bc)(Image *);
|
|
static void (*_image_decompress_etc)(Image *);
|
|
|
|
static DVector<uint8_t> (*lossy_packer)(const Image& p_image,float p_quality);
|
|
static Image (*lossy_unpacker)(const DVector<uint8_t>& p_buffer);
|
|
static DVector<uint8_t> (*lossless_packer)(const Image& p_image);
|
|
static Image (*lossless_unpacker)(const DVector<uint8_t>& p_buffer);
|
|
private:
|
|
|
|
//internal byte based color
|
|
struct BColor {
|
|
union {
|
|
uint8_t col[4];
|
|
struct {
|
|
uint8_t r,g,b,a;
|
|
};
|
|
};
|
|
|
|
bool operator==(const BColor& p_color) const { for(int i=0;i<4;i++) {if (col[i]!=p_color.col[i]) return false; } return true; }
|
|
_FORCE_INLINE_ uint8_t gray() const { return (uint16_t(col[0])+uint16_t(col[1])+uint16_t(col[2]))/3; }
|
|
_FORCE_INLINE_ BColor() {}
|
|
BColor(uint8_t p_r,uint8_t p_g,uint8_t p_b,uint8_t p_a=255) { col[0]=p_r; col[1]=p_g; col[2]=p_b; col[3]=p_a; }
|
|
};
|
|
|
|
//median cut classes
|
|
|
|
struct BColorPos {
|
|
|
|
uint32_t index;
|
|
BColor color;
|
|
struct SortR {
|
|
|
|
bool operator()(const BColorPos& ca, const BColorPos& cb) const { return ca.color.r < cb.color.r; }
|
|
};
|
|
|
|
struct SortG {
|
|
|
|
bool operator()(const BColorPos& ca, const BColorPos& cb) const { return ca.color.g < cb.color.g; }
|
|
};
|
|
|
|
struct SortB {
|
|
|
|
bool operator()(const BColorPos& ca, const BColorPos& cb) const { return ca.color.b < cb.color.b; }
|
|
};
|
|
|
|
struct SortA {
|
|
|
|
bool operator()(const BColorPos& ca, const BColorPos& cb) const { return ca.color.a < cb.color.a; }
|
|
};
|
|
};
|
|
|
|
struct SPTree {
|
|
|
|
bool leaf;
|
|
uint8_t split_plane;
|
|
uint8_t split_value;
|
|
union {
|
|
int left;
|
|
int color;
|
|
};
|
|
int right;
|
|
SPTree() { leaf=true; left=-1; right=-1;}
|
|
};
|
|
|
|
struct MCBlock {
|
|
|
|
BColorPos min_color,max_color;
|
|
BColorPos *colors;
|
|
int sp_idx;
|
|
int color_count;
|
|
int get_longest_axis_index() const;
|
|
int get_longest_axis_length() const;
|
|
bool operator<(const MCBlock& p_block) const;
|
|
void shrink();
|
|
MCBlock();
|
|
MCBlock(BColorPos *p_colors,int p_color_count);
|
|
};
|
|
|
|
Format format;
|
|
DVector<uint8_t> data;
|
|
int width,height,mipmaps;
|
|
|
|
|
|
|
|
_FORCE_INLINE_ BColor _get_pixel(int p_x,int p_y,const unsigned char *p_data,int p_data_size) const;
|
|
_FORCE_INLINE_ BColor _get_pixelw(int p_x,int p_y,int p_width,const unsigned char *p_data,int p_data_size) const;
|
|
_FORCE_INLINE_ void _put_pixelw(int p_x,int p_y, int p_width, const BColor& p_color, unsigned char *p_data);
|
|
_FORCE_INLINE_ void _put_pixel(int p_x,int p_y, const BColor& p_color, unsigned char *p_data);
|
|
_FORCE_INLINE_ void _get_mipmap_offset_and_size(int p_mipmap,int &r_offset, int &r_width, int &r_height) const; //get where the mipmap begins in data
|
|
_FORCE_INLINE_ static void _get_format_min_data_size(Format p_format,int &r_w, int &r_h);
|
|
|
|
static int _get_dst_image_size(int p_width, int p_height, Format p_format,int &r_mipmaps,int p_mipmaps=-1);
|
|
bool _can_modify(Format p_format) const;
|
|
|
|
|
|
|
|
public:
|
|
|
|
|
|
|
|
int get_width() const; ///< Get image width
|
|
int get_height() const; ///< Get image height
|
|
int get_mipmaps() const;
|
|
|
|
/**
|
|
* Get a pixel from the image. for grayscale or indexed formats, use Color::gray to obtain the actual
|
|
* value.
|
|
*/
|
|
Color get_pixel(int p_x,int p_y,int p_mipmap=0) const;
|
|
/**
|
|
* Set a pixel into the image. for grayscale or indexed formats, a suitable Color constructor.
|
|
*/
|
|
void put_pixel(int p_x,int p_y, const Color& p_color,int p_mipmap=0); /* alpha and index are averaged */
|
|
|
|
/**
|
|
* Convert the image to another format, as close as it can be done.
|
|
*/
|
|
void convert( Format p_new_format );
|
|
|
|
/**
|
|
* Get the current image format.
|
|
*/
|
|
Format get_format() const;
|
|
|
|
int get_mipmap_offset(int p_mipmap) const; //get where the mipmap begins in data
|
|
void get_mipmap_offset_and_size(int p_mipmap,int &r_ofs, int &r_size) const; //get where the mipmap begins in data
|
|
|
|
/**
|
|
* Resize the image, using the prefered interpolation method.
|
|
* Indexed-Color images always use INTERPOLATE_NEAREST.
|
|
*/
|
|
|
|
void resize_to_po2(bool p_square=false);
|
|
void resize( int p_width, int p_height, Interpolation p_interpolation=INTERPOLATE_BILINEAR );
|
|
Image resized( int p_width, int p_height, int p_interpolation=INTERPOLATE_BILINEAR );
|
|
/**
|
|
* Crop the image to a specific size, if larger, then the image is filled by black
|
|
*/
|
|
void crop( int p_width, int p_height );
|
|
|
|
|
|
void flip_x();
|
|
void flip_y();
|
|
/**
|
|
* Generate a mipmap to an image (creates an image 1/4 the size, with averaging of 4->1)
|
|
*/
|
|
Error generate_mipmaps(int p_amount=-1,bool p_keep_existing=false);
|
|
|
|
void clear_mipmaps();
|
|
|
|
|
|
/**
|
|
* Generate a normal map from a grayscale image
|
|
*/
|
|
|
|
void make_normalmap(float p_height_scale=1.0);
|
|
|
|
/**
|
|
* Create a new image of a given size and format. Current image will be lost
|
|
*/
|
|
void create(int p_width, int p_height, bool p_use_mipmaps, Format p_format);
|
|
void create(int p_width, int p_height, int p_mipmaps, Format p_format, const DVector<uint8_t>& p_data);
|
|
|
|
void create( const char ** p_xpm );
|
|
/**
|
|
* returns true when the image is empty (0,0) in size
|
|
*/
|
|
bool empty() const;
|
|
|
|
DVector<uint8_t> get_data() const;
|
|
|
|
Error load(const String& p_path);
|
|
|
|
/**
|
|
* create an empty image
|
|
*/
|
|
Image();
|
|
/**
|
|
* create an empty image of a specific size and format
|
|
*/
|
|
Image(int p_width, int p_height, bool p_use_mipmaps, Format p_format);
|
|
/**
|
|
* import an image of a specific size and format from a pointer
|
|
*/
|
|
Image(int p_width, int p_height, int p_mipmaps, Format p_format, const DVector<uint8_t>& p_data);
|
|
|
|
enum AlphaMode {
|
|
ALPHA_NONE,
|
|
ALPHA_BIT,
|
|
ALPHA_BLEND
|
|
};
|
|
|
|
AlphaMode detect_alpha() const;
|
|
|
|
void put_indexed_pixel(int p_x, int p_y, uint8_t p_idx,int p_mipmap=0);
|
|
uint8_t get_indexed_pixel(int p_x, int p_y,int p_mipmap=0) const;
|
|
void set_pallete(const DVector<uint8_t>& p_data);
|
|
|
|
|
|
static int get_format_pixel_size(Format p_format);
|
|
static int get_format_pixel_rshift(Format p_format);
|
|
static int get_format_pallete_size(Format p_format);
|
|
static int get_image_data_size(int p_width, int p_height, Format p_format,int p_mipmaps=0);
|
|
static int get_image_required_mipmaps(int p_width, int p_height, Format p_format);
|
|
|
|
|
|
|
|
|
|
bool operator==(const Image& p_image) const;
|
|
|
|
void quantize();
|
|
|
|
enum CompressMode {
|
|
COMPRESS_BC,
|
|
COMPRESS_PVRTC2,
|
|
COMPRESS_PVRTC4,
|
|
COMPRESS_ETC
|
|
};
|
|
|
|
Error compress(CompressMode p_mode=COMPRESS_BC);
|
|
Image compressed(int p_mode); /* from the Image::CompressMode enum */
|
|
void decompress();
|
|
|
|
void fix_alpha_edges();
|
|
|
|
void blit_rect(const Image& p_src, const Rect2& p_src_rect,const Point2& p_dest);
|
|
void brush_transfer(const Image& p_src, const Image& p_brush, const Point2& p_dest);
|
|
Image brushed(const Image& p_src, const Image& p_brush, const Point2& p_dest) const;
|
|
|
|
Rect2 get_used_rect() const;
|
|
Image get_rect(const Rect2& p_area) const;
|
|
|
|
static void set_compress_bc_func(void (*p_compress_func)(Image *));
|
|
Image(const uint8_t* p_mem_png);
|
|
Image(const char **p_xpm);
|
|
~Image();
|
|
|
|
};
|
|
|
|
|
|
#endif
|