Renamed libs

Cleaner and more flexible.

7 files changed, 0 insertions, 1341 deletions

diff --git a/libgui/inc/bmp.h b/libgui/inc/bmp.h
deleted file mode 100644
index ff8360b..0000000
--- a/libgui/inc/bmp.h
+++ /dev/null
@@ -1,39 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#ifndef BMP_H
-#define BMP_H
-
-#include <def.h>
-#include <vec.h>
-
-struct bmp_header {
-	u8 signature[2];
-	u32 size;
-	u32 reserved;
-	u32 offset;
-} __attribute__((packed));
-
-struct bmp_info {
-	u32 size;
-	u32 width;
-	u32 height;
-	u16 planes;
-	u16 bpp;
-	u32 compression;
-	u32 compressed_size;
-	u32 x_pixel_meter;
-	u32 y_pixel_meter;
-	u32 colors;
-	u32 important_colors;
-};
-
-struct bmp {
-	vec2 size;
-	u8 *data;
-	u32 bpp;
-	u32 pitch;
-};
-
-struct bmp *bmp_load(const char *path);
-
-#endif
diff --git a/libgui/inc/gfx.h b/libgui/inc/gfx.h
deleted file mode 100644
index f3555a4..0000000
--- a/libgui/inc/gfx.h
+++ /dev/null
@@ -1,88 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-// Some GFX functions
-
-#ifndef GFX_H
-#define GFX_H
-
-#include <def.h>
-#include <sys.h>
-#include <vec.h>
-#include <vesa.h>
-
-#define WM_PATH "/bin/wm"
-
-#define GET_ALPHA(color) ((color >> 24) & 0x000000FF)
-#define GET_RED(color) ((color >> 16) & 0x000000FF)
-#define GET_GREEN(color) ((color >> 8) & 0x000000FF)
-#define GET_BLUE(color) ((color >> 0) & 0X000000FF)
-
-#define COLOR_TRANSPARENT 0x00000000
-#define COLOR_INVISIBLE 0x00000000
-#define COLOR_BLACK 0xff0f0f0f
-#define COLOR_RED 0xfff07f7f
-#define COLOR_GREEN 0xff7ff088
-#define COLOR_YELLOW 0xffeef07f
-#define COLOR_BLUE 0xff7facf0
-#define COLOR_MAGENTA 0xffd67ff0
-#define COLOR_CYAN 0xff7fe7f0
-#define COLOR_WHITE 0xffe9e9e9
-#define COLOR_BRIGHT_BLACK 0xff928374
-#define COLOR_BRIGHT_RED 0xffed9a9a
-#define COLOR_BRIGHT_GREEN 0xff9ef0a5
-#define COLOR_BRIGHT_YELLOW 0xffe7e897
-#define COLOR_BRIGHT_BLUE 0xff98b9eb
-#define COLOR_BRIGHT_MAGENTA 0xffd196e3
-#define COLOR_BRIGHT_CYAN 0xff94dae0
-#define COLOR_BRIGHT_WHITE 0xffe3e3e3
-#define COLOR_FG COLOR_WHITE
-#define COLOR_BG COLOR_BLACK
-
-#define WF_DEFAULT (0 << 0)
-#define WF_NO_FOCUS (1 << 0)
-#define WF_NO_DRAG (1 << 1)
-#define WF_NO_RESIZE (1 << 2)
-#define WF_NO_FB (1 << 3)
-#define WF_NO_WINDOW (1 << 4)
-/* #define WF_RELATIVE (1 << 4) */
-
-enum font_type { FONT_8, FONT_12, FONT_16, FONT_24, FONT_32, FONT_64 };
-
-// Generalized font struct
-struct font {
-	char *chars;
-	vec2 size;
-	int char_size;
-};
-
-struct context {
-	vec2 size;
-	u8 *fb;
-	u32 bpp;
-	u32 pitch;
-	u32 bytes;
-};
-
-struct context *gfx_new_ctx(struct context *ctx);
-struct font *gfx_resolve_font(enum font_type font_type);
-void gfx_write_char(struct context *ctx, vec2 pos, enum font_type font_type, u32 c, char ch);
-void gfx_write(struct context *ctx, vec2 pos, enum font_type font_type, u32 c, const char *text);
-void gfx_load_image(struct context *ctx, vec2 pos, const char *path);
-void gfx_load_wallpaper(struct context *ctx, const char *path);
-void gfx_copy(struct context *dest, struct context *src, vec2 pos, vec2 size);
-void gfx_ctx_on_ctx(struct context *dest, struct context *src, vec2 pos);
-void gfx_draw_rectangle(struct context *ctx, vec2 pos1, vec2 pos2, u32 c);
-void gfx_fill(struct context *ctx, u32 c);
-void gfx_border(struct context *ctx, u32 c, u32 width);
-
-int gfx_font_height(enum font_type);
-int gfx_font_width(enum font_type);
-
-/**
- * Wrappers
- */
-
-/* #define gfx_redraw()                                                                               \ */
-/* 	(msg_send(pidof(WM_PATH), GFX_REDRAW, NULL)) // TODO: Partial redraw (optimization) */
-/* #define gfx_redraw_focused() (msg_send(pidof(WM_PATH), GFX_REDRAW_FOCUSED, NULL)) */
-
-#endif
diff --git a/libgui/inc/gui.h b/libgui/inc/gui.h
deleted file mode 100644
index a3f74f8..0000000
--- a/libgui/inc/gui.h
+++ /dev/null
@@ -1,13 +0,0 @@
-// MIT License, Copyright (c) 2021 Marvin Borner
-
-#ifndef GUI_H
-#define GUI_H
-
-#include <def.h>
-#include <errno.h>
-
-res gui_new_window(void);
-res gui_redraw_window(u32 id);
-void gui_loop(void);
-
-#endif
diff --git a/libgui/inc/msg.h b/libgui/inc/msg.h
deleted file mode 100644
index 0e85d5a..0000000
--- a/libgui/inc/msg.h
+++ /dev/null
@@ -1,71 +0,0 @@
-// MIT License, Copyright (c) 2021 Marvin Borner
-
-#ifndef MSG_H
-#define MSG_H
-
-#include <def.h>
-#include <gfx.h>
-
-#define MSG_PING_SEND 0x07734
-#define MSG_PING_RECV 0x7474
-
-#define MSG_MAGIC 0x42042069
-#define MSG_SUCCESS (1 << 29)
-#define MSG_FAILURE (1 << 30)
-
-enum message_state {
-	MSG_GO_ON,
-	MSG_NEED_ANSWER,
-};
-
-struct message_header {
-	u32 magic;
-	u32 src;
-	u32 type;
-	enum message_state state;
-};
-
-struct message_ping {
-	struct message_header header;
-	u32 ping;
-};
-
-struct message_new_window {
-	struct message_header header;
-	u32 id;
-	u32 shid;
-	struct context ctx;
-};
-
-struct message_redraw_window {
-	struct message_header header;
-	u32 id;
-};
-
-struct message_destroy_window {
-	struct message_header header;
-	u32 id;
-};
-
-struct message_mouse {
-	struct message_header header;
-	vec2 pos;
-	struct {
-		u8 click : 1;
-	} bits;
-};
-
-enum message_type {
-	GUI_PING,
-	GUI_NEW_WINDOW,
-	GUI_REDRAW_WINDOW,
-	GUI_DESTROY_WINDOW,
-
-	GUI_MOUSE,
-	GUI_KEYBOARD,
-};
-
-res msg_send(u32 pid, enum message_type type, void *data, u32 size);
-res msg_receive(void *buf, u32 size);
-
-#endif
diff --git a/libgui/inc/png.h b/libgui/inc/png.h
deleted file mode 100644
index dba0947..0000000
--- a/libgui/inc/png.h
+++ /dev/null
@@ -1,1036 +0,0 @@
-/*
-LodePNG version 20201017
-
-Copyright (c) 2005-2020 Lode Vandevenne
-Copyright (c) 2021 Marvin Borner
-
-This software is provided 'as-is', without any express or implied
-warranty. In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-    1. The origin of this software must not be misrepresented; you must not
-    claim that you wrote the original software. If you use this software
-    in a product, an acknowledgment in the product documentation would be
-    appreciated but is not required.
-
-    2. Altered source versions must be plainly marked as such, and must not be
-    misrepresented as being the original software.
-
-    3. This notice may not be removed or altered from any source
-    distribution.
-*/
-
-#ifndef PNG_H
-#define PNG_H
-
-/* For now! TODO: Use PNG encoding */
-#define PNG_NO_COMPILE_ENCODER
-
-#include <def.h>
-extern const char *PNG_VERSION_STRING;
-
-/*
-The following #defines are used to create code sections. They can be disabled
-to disable code sections, which can give faster compile time and smaller binary.
-The "NO_COMPILE" defines are designed to be used to pass as defines to the
-compiler command to disable them without modifying this header, e.g.
--DPNG_NO_COMPILE_ZLIB for gcc.
-In addition to those below, you can also define PNG_NO_COMPILE_CRC to
-allow implementing a custom png_crc32.
-*/
-/*deflate & zlib. If disabled, you must specify alternative zlib functions in
-the custom_zlib field of the compress and decompress settings*/
-#ifndef PNG_NO_COMPILE_ZLIB
-#define PNG_COMPILE_ZLIB
-#endif
-
-/*png encoder and png decoder*/
-#ifndef PNG_NO_COMPILE_PNG
-#define PNG_COMPILE_PNG
-#endif
-
-/*deflate&zlib decoder and png decoder*/
-#ifndef PNG_NO_COMPILE_DECODER
-#define PNG_COMPILE_DECODER
-#endif
-
-/*deflate&zlib encoder and png encoder*/
-#ifndef PNG_NO_COMPILE_ENCODER
-#define PNG_COMPILE_ENCODER
-#endif
-
-/*the optional built in harddisk file loading and saving functions*/
-#ifndef PNG_NO_COMPILE_DISK
-#define PNG_COMPILE_DISK
-#endif
-
-/*support for chunks other than IHDR, IDAT, PLTE, tRNS, IEND: ancillary and unknown chunks*/
-#ifndef PNG_NO_COMPILE_ANCILLARY_CHUNKS
-#define PNG_COMPILE_ANCILLARY_CHUNKS
-#endif
-
-/*ability to convert error numerical codes to English text string*/
-#ifndef PNG_NO_COMPILE_ERROR_TEXT
-#define PNG_COMPILE_ERROR_TEXT
-#endif
-
-/*Compile the default allocators (C's free, malloc and realloc). If you disable this,
-you can define the functions png_free, png_malloc and png_realloc in your
-source files with custom allocators.*/
-#ifndef PNG_NO_COMPILE_ALLOCATORS
-#define PNG_COMPILE_ALLOCATORS
-#endif
-
-/*compile the C++ version (you can disable the C++ wrapper here even when compiling for C++)*/
-#ifdef __cplusplus
-#ifndef PNG_NO_COMPILE_CPP
-#define PNG_COMPILE_CPP
-#endif
-#endif
-
-#ifdef PNG_COMPILE_CPP
-#include <string>
-#include <vector>
-#endif /*PNG_COMPILE_CPP*/
-
-#ifdef PNG_COMPILE_PNG
-/*The PNG color types (also used for raw image).*/
-typedef enum pngColorType {
-	LCT_GREY = 0, /*grayscale: 1,2,4,8,16 bit*/
-	LCT_RGB = 2, /*RGB: 8,16 bit*/
-	LCT_PALETTE = 3, /*palette: 1,2,4,8 bit*/
-	LCT_GREY_ALPHA = 4, /*grayscale with alpha: 8,16 bit*/
-	LCT_RGBA = 6, /*RGB with alpha: 8,16 bit*/
-	/*LCT_MAX_OCTET_VALUE lets the compiler allow this enum to represent any invalid
-  byte value from 0 to 255 that could be present in an invalid PNG file header. Do
-  not use, compare with or set the name LCT_MAX_OCTET_VALUE, instead either use
-  the valid color type names above, or numeric values like 1 or 7 when checking for
-  particular disallowed color type byte values, or cast to integer to print it.*/
-	LCT_MAX_OCTET_VALUE = 255
-} pngColorType;
-
-#ifdef PNG_COMPILE_DECODER
-/*
-Converts PNG data in memory to raw pixel data.
-out: Output parameter. Pointer to buffer that will contain the raw pixel data.
-     After decoding, its size is w * h * (bytes per pixel) bytes larger than
-     initially. Bytes per pixel depends on colortype and bitdepth.
-     Must be freed after usage with free(*out).
-     Note: for 16-bit per channel colors, uses big endian format like PNG does.
-w: Output parameter. Pointer to width of pixel data.
-h: Output parameter. Pointer to height of pixel data.
-in: Memory buffer with the PNG file.
-insize: size of the in buffer.
-colortype: the desired color type for the raw output image. See explanation on PNG color types.
-bitdepth: the desired bit depth for the raw output image. See explanation on PNG color types.
-Return value: png error code (0 means no error).
-*/
-u32 png_decode_memory(u8 **out, u32 *w, u32 *h, const u8 *in, u32 insize, pngColorType colortype,
-		      u32 bitdepth);
-
-/*Same as png_decode_memory, but always decodes to 32-bit RGBA raw image*/
-u32 png_decode32(u8 **out, u32 *w, u32 *h, const u8 *in, u32 insize);
-
-/*Same as png_decode_memory, but always decodes to 24-bit RGB raw image*/
-u32 png_decode24(u8 **out, u32 *w, u32 *h, const u8 *in, u32 insize);
-
-#ifdef PNG_COMPILE_DISK
-/*
-Load PNG from disk, from file with given name.
-Same as the other decode functions, but instead takes a filename as input.
-*/
-u32 png_decode_file(u8 **out, u32 *w, u32 *h, const char *filename, pngColorType colortype,
-		    u32 bitdepth);
-
-/*Same as png_decode_file, but always decodes to 32-bit RGBA raw image.*/
-u32 png_decode32_file(u8 **out, u32 *w, u32 *h, const char *filename);
-
-/*Same as png_decode_file, but always decodes to 24-bit RGB raw image.*/
-u32 png_decode24_file(u8 **out, u32 *w, u32 *h, const char *filename);
-#endif /*PNG_COMPILE_DISK*/
-#endif /*PNG_COMPILE_DECODER*/
-
-#ifdef PNG_COMPILE_ENCODER
-/*
-Converts raw pixel data into a PNG image in memory. The colortype and bitdepth
-  of the output PNG image cannot be chosen, they are automatically determined
-  by the colortype, bitdepth and content of the input pixel data.
-  Note: for 16-bit per channel colors, needs big endian format like PNG does.
-out: Output parameter. Pointer to buffer that will contain the PNG image data.
-     Must be freed after usage with free(*out).
-outsize: Output parameter. Pointer to the size in bytes of the out buffer.
-image: The raw pixel data to encode. The size of this buffer should be
-       w * h * (bytes per pixel), bytes per pixel depends on colortype and bitdepth.
-w: width of the raw pixel data in pixels.
-h: height of the raw pixel data in pixels.
-colortype: the color type of the raw input image. See explanation on PNG color types.
-bitdepth: the bit depth of the raw input image. See explanation on PNG color types.
-Return value: png error code (0 means no error).
-*/
-u32 png_encode_memory(u8 **out, u32 *outsize, const u8 *image, u32 w, u32 h, pngColorType colortype,
-		      u32 bitdepth);
-
-/*Same as png_encode_memory, but always encodes from 32-bit RGBA raw image.*/
-u32 png_encode32(u8 **out, u32 *outsize, const u8 *image, u32 w, u32 h);
-
-/*Same as png_encode_memory, but always encodes from 24-bit RGB raw image.*/
-u32 png_encode24(u8 **out, u32 *outsize, const u8 *image, u32 w, u32 h);
-
-#ifdef PNG_COMPILE_DISK
-/*
-Converts raw pixel data into a PNG file on disk.
-Same as the other encode functions, but instead takes a filename as output.
-NOTE: This overwrites existing files without warning!
-*/
-u32 png_encode_file(const char *filename, const u8 *image, u32 w, u32 h, pngColorType colortype,
-		    u32 bitdepth);
-
-/*Same as png_encode_file, but always encodes from 32-bit RGBA raw image.*/
-u32 png_encode32_file(const char *filename, const u8 *image, u32 w, u32 h);
-
-/*Same as png_encode_file, but always encodes from 24-bit RGB raw image.*/
-u32 png_encode24_file(const char *filename, const u8 *image, u32 w, u32 h);
-#endif /*PNG_COMPILE_DISK*/
-#endif /*PNG_COMPILE_ENCODER*/
-
-#ifdef PNG_COMPILE_CPP
-namespace png
-{
-#ifdef PNG_COMPILE_DECODER
-/*Same as png_decode_memory, but decodes to an std::vector. The colortype
-is the format to output the pixels to. Default is RGBA 8-bit per channel.*/
-u32 decode(std::vector<u8> &out, u32 &w, u32 &h, const u8 *in, u32 insize,
-	   pngColorType colortype = LCT_RGBA, u32 bitdepth = 8);
-u32 decode(std::vector<u8> &out, u32 &w, u32 &h, const std::vector<u8> &in,
-	   pngColorType colortype = LCT_RGBA, u32 bitdepth = 8);
-#ifdef PNG_COMPILE_DISK
-/*
-Converts PNG file from disk to raw pixel data in memory.
-Same as the other decode functions, but instead takes a filename as input.
-*/
-u32 decode(std::vector<u8> &out, u32 &w, u32 &h, const std::string &filename,
-	   pngColorType colortype = LCT_RGBA, u32 bitdepth = 8);
-#endif /* PNG_COMPILE_DISK */
-#endif /* PNG_COMPILE_DECODER */
-
-#ifdef PNG_COMPILE_ENCODER
-/*Same as png_encode_memory, but encodes to an std::vector. colortype
-is that of the raw input data. The output PNG color type will be auto chosen.*/
-u32 encode(std::vector<u8> &out, const u8 *in, u32 w, u32 h, pngColorType colortype = LCT_RGBA,
-	   u32 bitdepth = 8);
-u32 encode(std::vector<u8> &out, const std::vector<u8> &in, u32 w, u32 h,
-	   pngColorType colortype = LCT_RGBA, u32 bitdepth = 8);
-#ifdef PNG_COMPILE_DISK
-/*
-Converts 32-bit RGBA raw pixel data into a PNG file on disk.
-Same as the other encode functions, but instead takes a filename as output.
-NOTE: This overwrites existing files without warning!
-*/
-u32 encode(const std::string &filename, const u8 *in, u32 w, u32 h,
-	   pngColorType colortype = LCT_RGBA, u32 bitdepth = 8);
-u32 encode(const std::string &filename, const std::vector<u8> &in, u32 w, u32 h,
-	   pngColorType colortype = LCT_RGBA, u32 bitdepth = 8);
-#endif /* PNG_COMPILE_DISK */
-#endif /* PNG_COMPILE_ENCODER */
-} /* namespace png */
-#endif /*PNG_COMPILE_CPP*/
-#endif /*PNG_COMPILE_PNG*/
-
-#ifdef PNG_COMPILE_ERROR_TEXT
-/*Returns an English description of the numerical error code.*/
-const char *png_error_text(u32 code);
-#endif /*PNG_COMPILE_ERROR_TEXT*/
-
-#ifdef PNG_COMPILE_DECODER
-/*Settings for zlib decompression*/
-typedef struct pngDecompressSettings pngDecompressSettings;
-struct pngDecompressSettings {
-	/* Check pngDecoderSettings for more ignorable errors such as ignore_crc */
-	u32 ignore_adler32; /*if 1, continue and don't give an error message if the Adler32 checksum is corrupted*/
-	u32 ignore_nlen; /*ignore complement of len checksum in uncompressed blocks*/
-
-	/*Maximum decompressed size, beyond this the decoder may (and is encouraged to) stop decoding,
-  return an error, output a data size > max_output_size and all the data up to that point. This is
-  not hard limit nor a guarantee, but can prevent excessive memory usage. This setting is
-  ignored by the PNG decoder, but is used by the deflate/zlib decoder and can be used by custom ones.
-  Set to 0 to impose no limit (the default).*/
-	u32 max_output_size;
-
-	/*use custom zlib decoder instead of built in one (default: null).
-  Should return 0 if success, any non-0 if error (numeric value not exposed).*/
-	u32 (*custom_zlib)(u8 **, u32 *, const u8 *, u32, const pngDecompressSettings *);
-	/*use custom deflate decoder instead of built in one (default: null)
-  if custom_zlib is not null, custom_inflate is ignored (the zlib format uses deflate).
-  Should return 0 if success, any non-0 if error (numeric value not exposed).*/
-	u32 (*custom_inflate)(u8 **, u32 *, const u8 *, u32, const pngDecompressSettings *);
-
-	const void *custom_context; /*optional custom settings for custom functions*/
-};
-
-extern const pngDecompressSettings png_default_decompress_settings;
-void png_decompress_settings_init(pngDecompressSettings *settings);
-#endif /*PNG_COMPILE_DECODER*/
-
-#ifdef PNG_COMPILE_ENCODER
-/*
-Settings for zlib compression. Tweaking these settings tweaks the balance
-between speed and compression ratio.
-*/
-typedef struct pngCompressSettings pngCompressSettings;
-struct pngCompressSettings /*deflate = compress*/ {
-	/*LZ77 related settings*/
-	u32 btype; /*the block type for LZ (0, 1, 2 or 3, see zlib standard). Should be 2 for proper compression.*/
-	u32 use_lz77; /*whether or not to use LZ77. Should be 1 for proper compression.*/
-	u32 windowsize; /*must be a power of two <= 32768. higher compresses more but is slower. Default value: 2048.*/
-	u32 minmatch; /*minimum lz77 length. 3 is normally best, 6 can be better for some PNGs. Default: 0*/
-	u32 nicematch; /*stop searching if >= this length found. Set to 258 for best compression. Default: 128*/
-	u32 lazymatching; /*use lazy matching: better compression but a bit slower. Default: true*/
-
-	/*use custom zlib encoder instead of built in one (default: null)*/
-	u32 (*custom_zlib)(u8 **, u32 *, const u8 *, u32, const pngCompressSettings *);
-	/*use custom deflate encoder instead of built in one (default: null)
-  if custom_zlib is used, custom_deflate is ignored since only the built in
-  zlib function will call custom_deflate*/
-	u32 (*custom_deflate)(u8 **, u32 *, const u8 *, u32, const pngCompressSettings *);
-
-	const void *custom_context; /*optional custom settings for custom functions*/
-};
-
-extern const pngCompressSettings png_default_compress_settings;
-void png_compress_settings_init(pngCompressSettings *settings);
-#endif /*PNG_COMPILE_ENCODER*/
-
-#ifdef PNG_COMPILE_PNG
-/*
-Color mode of an image. Contains all information required to decode the pixel
-bits to RGBA colors. This information is the same as used in the PNG file
-format, and is used both for PNG and raw image data in png.
-*/
-typedef struct pngColorMode {
-	/*header (IHDR)*/
-	pngColorType
-		colortype; /*color type, see PNG standard or documentation further in this header file*/
-	u32 bitdepth; /*bits per sample, see PNG standard or documentation further in this header file*/
-
-	/*
-  palette (PLTE and tRNS)
-
-  Dynamically allocated with the colors of the palette, including alpha.
-  This field may not be allocated directly, use png_color_mode_init first,
-  then png_palette_add per color to correctly initialize it (to ensure size
-  of exactly 1024 bytes).
-
-  The alpha channels must be set as well, set them to 255 for opaque images.
-
-  When decoding, by default you can ignore this palette, since png already
-  fills the palette colors in the pixels of the raw RGBA output.
-
-  The palette is only supported for color type 3.
-  */
-	u8 *palette; /*palette in RGBARGBA... order. Must be either 0, or when allocated must have 1024 bytes*/
-	u32 palettesize; /*palette size in number of colors (amount of used bytes is 4 * palettesize)*/
-
-	/*
-  transparent color key (tRNS)
-
-  This color uses the same bit depth as the bitdepth value in this struct, which can be 1-bit to 16-bit.
-  For grayscale PNGs, r, g and b will all 3 be set to the same.
-
-  When decoding, by default you can ignore this information, since png sets
-  pixels with this key to transparent already in the raw RGBA output.
-
-  The color key is only supported for color types 0 and 2.
-  */
-	u32 key_defined; /*is a transparent color key given? 0 = false, 1 = true*/
-	u32 key_r; /*red/grayscale component of color key*/
-	u32 key_g; /*green component of color key*/
-	u32 key_b; /*blue component of color key*/
-} pngColorMode;
-
-/*init, cleanup and copy functions to use with this struct*/
-void png_color_mode_init(pngColorMode *info);
-void png_color_mode_cleanup(pngColorMode *info);
-/*return value is error code (0 means no error)*/
-u32 png_color_mode_copy(pngColorMode *dest, const pngColorMode *source);
-/* Makes a temporary pngColorMode that does not need cleanup (no palette) */
-pngColorMode png_color_mode_make(pngColorType colortype, u32 bitdepth);
-
-void png_palette_clear(pngColorMode *info);
-/*add 1 color to the palette*/
-u32 png_palette_add(pngColorMode *info, u8 r, u8 g, u8 b, u8 a);
-
-/*get the total amount of bits per pixel, based on colortype and bitdepth in the struct*/
-u32 png_get_bpp(const pngColorMode *info);
-/*get the amount of color channels used, based on colortype in the struct.
-If a palette is used, it counts as 1 channel.*/
-u32 png_get_channels(const pngColorMode *info);
-/*is it a grayscale type? (only colortype 0 or 4)*/
-u32 png_is_greyscale_type(const pngColorMode *info);
-/*has it got an alpha channel? (only colortype 2 or 6)*/
-u32 png_is_alpha_type(const pngColorMode *info);
-/*has it got a palette? (only colortype 3)*/
-u32 png_is_palette_type(const pngColorMode *info);
-/*only returns true if there is a palette and there is a value in the palette with alpha < 255.
-Loops through the palette to check this.*/
-u32 png_has_palette_alpha(const pngColorMode *info);
-/*
-Check if the given color info indicates the possibility of having non-opaque pixels in the PNG image.
-Returns true if the image can have translucent or invisible pixels (it still be opaque if it doesn't use such pixels).
-Returns false if the image can only have opaque pixels.
-In detail, it returns true only if it's a color type with alpha, or has a palette with non-opaque values,
-or if "key_defined" is true.
-*/
-u32 png_can_have_alpha(const pngColorMode *info);
-/*Returns the byte size of a raw image buffer with given width, height and color mode*/
-u32 png_get_raw_size(u32 w, u32 h, const pngColorMode *color);
-
-#ifdef PNG_COMPILE_ANCILLARY_CHUNKS
-/*The information of a Time chunk in PNG.*/
-typedef struct pngTime {
-	u32 year; /*2 bytes used (0-65535)*/
-	u32 month; /*1-12*/
-	u32 day; /*1-31*/
-	u32 hour; /*0-23*/
-	u32 minute; /*0-59*/
-	u32 second; /*0-60 (to allow for leap seconds)*/
-} pngTime;
-#endif /*PNG_COMPILE_ANCILLARY_CHUNKS*/
-
-/*Information about the PNG image, except pixels, width and height.*/
-typedef struct pngInfo {
-	/*header (IHDR), palette (PLTE) and transparency (tRNS) chunks*/
-	u32 compression_method; /*compression method of the original file. Always 0.*/
-	u32 filter_method; /*filter method of the original file*/
-	u32 interlace_method; /*interlace method of the original file: 0=none, 1=Adam7*/
-	pngColorMode color; /*color type and bits, palette and transparency of the PNG file*/
-
-#ifdef PNG_COMPILE_ANCILLARY_CHUNKS
-	/*
-  Suggested background color chunk (bKGD)
-
-  This uses the same color mode and bit depth as the PNG (except no alpha channel),
-  with values truncated to the bit depth in the u32 integer.
-
-  For grayscale and palette PNGs, the value is stored in background_r. The values
-  in background_g and background_b are then unused.
-
-  So when decoding, you may get these in a different color mode than the one you requested
-  for the raw pixels.
-
-  When encoding with auto_convert, you must use the color model defined in info_png.color for
-  these values. The encoder normally ignores info_png.color when auto_convert is on, but will
-  use it to interpret these values (and convert copies of them to its chosen color model).
-
-  When encoding, avoid setting this to an expensive color, such as a non-gray value
-  when the image is gray, or the compression will be worse since it will be forced to
-  write the PNG with a more expensive color mode (when auto_convert is on).
-
-  The decoder does not use this background color to edit the color of pixels. This is a
-  completely optional metadata feature.
-  */
-	u32 background_defined; /*is a suggested background color given?*/
-	u32 background_r; /*red/gray/palette component of suggested background color*/
-	u32 background_g; /*green component of suggested background color*/
-	u32 background_b; /*blue component of suggested background color*/
-
-	/*
-  Non-international text chunks (tEXt and zTXt)
-
-  The char** arrays each contain num strings. The actual messages are in
-  text_strings, while text_keys are keywords that give a short description what
-  the actual text represents, e.g. Title, Author, Description, or anything else.
-
-  All the string fields below including strings, keys, names and language tags are null terminated.
-  The PNG specification uses null characters for the keys, names and tags, and forbids null
-  characters to appear in the main text which is why we can use null termination everywhere here.
-
-  A keyword is minimum 1 character and maximum 79 characters long (plus the
-  additional null terminator). It's discouraged to use a single line length
-  longer than 79 characters for texts.
-
-  Don't allocate these text buffers yourself. Use the init/cleanup functions
-  correctly and use png_add_text and png_clear_text.
-
-  Standard text chunk keywords and strings are encoded using Latin-1.
-  */
-	u32 text_num; /*the amount of texts in these char** buffers (there may be more texts in itext)*/
-	char **text_keys; /*the keyword of a text chunk (e.g. "Comment")*/
-	char **text_strings; /*the actual text*/
-
-	/*
-  International text chunks (iTXt)
-  Similar to the non-international text chunks, but with additional strings
-  "langtags" and "transkeys", and the following text encodings are used:
-  keys: Latin-1, langtags: ASCII, transkeys and strings: UTF-8.
-  keys must be 1-79 characters (plus the additional null terminator), the other
-  strings are any length.
-  */
-	u32 itext_num; /*the amount of international texts in this PNG*/
-	char **itext_keys; /*the English keyword of the text chunk (e.g. "Comment")*/
-	char **itext_langtags; /*language tag for this text's language, ISO/IEC 646 string, e.g. ISO 639 language tag*/
-	char **itext_transkeys; /*keyword translated to the international language - UTF-8 string*/
-	char **itext_strings; /*the actual international text - UTF-8 string*/
-
-	/*time chunk (tIME)*/
-	u32 time_defined; /*set to 1 to make the encoder generate a tIME chunk*/
-	pngTime time;
-
-	/*phys chunk (pHYs)*/
-	u32 phys_defined; /*if 0, there is no pHYs chunk and the values below are undefined, if 1 else there is one*/
-	u32 phys_x; /*pixels per unit in x direction*/
-	u32 phys_y; /*pixels per unit in y direction*/
-	u32 phys_unit; /*may be 0 (unknown unit) or 1 (metre)*/
-
-	/*
-  Color profile related chunks: gAMA, cHRM, sRGB, iCPP
-
-  png does not apply any color conversions on pixels in the encoder or decoder and does not interpret these color
-  profile values. It merely passes on the information. If you wish to use color profiles and convert colors, please
-  use these values with a color management library.
-
-  See the PNG, ICC and sRGB specifications for more information about the meaning of these values.
-  */
-
-	/* gAMA chunk: optional, overridden by sRGB or iCCP if those are present. */
-	u32 gama_defined; /* Whether a gAMA chunk is present (0 = not present, 1 = present). */
-	u32 gama_gamma; /* Gamma exponent times 100000 */
-
-	/* cHRM chunk: optional, overridden by sRGB or iCCP if those are present. */
-	u32 chrm_defined; /* Whether a cHRM chunk is present (0 = not present, 1 = present). */
-	u32 chrm_white_x; /* White Point x times 100000 */
-	u32 chrm_white_y; /* White Point y times 100000 */
-	u32 chrm_red_x; /* Red x times 100000 */
-	u32 chrm_red_y; /* Red y times 100000 */
-	u32 chrm_green_x; /* Green x times 100000 */
-	u32 chrm_green_y; /* Green y times 100000 */
-	u32 chrm_blue_x; /* Blue x times 100000 */
-	u32 chrm_blue_y; /* Blue y times 100000 */
-
-	/*
-  sRGB chunk: optional. May not appear at the same time as iCCP.
-  If gAMA is also present gAMA must contain value 45455.
-  If cHRM is also present cHRM must contain respectively 31270,32900,64000,33000,30000,60000,15000,6000.
-  */
-	u32 srgb_defined; /* Whether an sRGB chunk is present (0 = not present, 1 = present). */
-	u32 srgb_intent; /* Rendering intent: 0=perceptual, 1=rel. colorimetric, 2=saturation, 3=abs. colorimetric */
-
-	/*
-  iCCP chunk: optional. May not appear at the same time as sRGB.
-
-  png does not parse or use the ICC profile (except its color space header field for an edge case), a
-  separate library to handle the ICC data (not included in png) format is needed to use it for color
-  management and conversions.
-
-  For encoding, if iCCP is present, gAMA and cHRM are recommended to be added as well with values that match the ICC
-  profile as closely as possible, if you wish to do this you should provide the correct values for gAMA and cHRM and
-  enable their '_defined' flags since png will not automatically compute them from the ICC profile.
-
-  For encoding, the ICC profile is required by the PNG specification to be an "RGB" profile for non-gray
-  PNG color types and a "GRAY" profile for gray PNG color types. If you disable auto_convert, you must ensure
-  the ICC profile type matches your requested color type, else the encoder gives an error. If auto_convert is
-  enabled (the default), and the ICC profile is not a good match for the pixel data, this will result in an encoder
-  error if the pixel data has non-gray pixels for a GRAY profile, or a silent less-optimal compression of the pixel
-  data if the pixels could be encoded as grayscale but the ICC profile is RGB.
-
-  To avoid this do not set an ICC profile in the image unless there is a good reason for it, and when doing so
-  make sure you compute it carefully to avoid the above problems.
-  */
-	u32 iccp_defined; /* Whether an iCCP chunk is present (0 = not present, 1 = present). */
-	char *iccp_name; /* Null terminated string with profile name, 1-79 bytes */
-	/*
-  The ICC profile in iccp_profile_size bytes.
-  Don't allocate this buffer yourself. Use the init/cleanup functions
-  correctly and use png_set_icc and png_clear_icc.
-  */
-	u8 *iccp_profile;
-	u32 iccp_profile_size; /* The size of iccp_profile in bytes */
-
-	/* End of color profile related chunks */
-
-	/*
-  unknown chunks: chunks not known by png, passed on byte for byte.
-
-  There are 3 buffers, one for each position in the PNG where unknown chunks can appear.
-  Each buffer contains all unknown chunks for that position consecutively.
-  The 3 positions are:
-  0: between IHDR and PLTE, 1: between PLTE and IDAT, 2: between IDAT and IEND.
-
-  For encoding, do not store critical chunks or known chunks that are enabled with a "_defined" flag
-  above in here, since the encoder will blindly follow this and could then encode an invalid PNG file
-  (such as one with two IHDR chunks or the disallowed combination of sRGB with iCCP). But do use
-  this if you wish to store an ancillary chunk that is not supported by png (such as sPLT or hIST),
-  or any non-standard PNG chunk.
-
-  Do not allocate or traverse this data yourself. Use the chunk traversing functions declared
-  later, such as png_chunk_next and png_chunk_append, to read/write this struct.
-  */
-	u8 *unknown_chunks_data[3];
-	u32 unknown_chunks_size[3]; /*size in bytes of the unknown chunks, given for protection*/
-#endif /*PNG_COMPILE_ANCILLARY_CHUNKS*/
-} pngInfo;
-
-/*init, cleanup and copy functions to use with this struct*/
-void png_info_init(pngInfo *info);
-void png_info_cleanup(pngInfo *info);
-/*return value is error code (0 means no error)*/
-u32 png_info_copy(pngInfo *dest, const pngInfo *source);
-
-#ifdef PNG_COMPILE_ANCILLARY_CHUNKS
-u32 png_add_text(pngInfo *info, const char *key, const char *str); /*push back both texts at once*/
-void png_clear_text(pngInfo *info); /*use this to clear the texts again after you filled them in*/
-
-u32 png_add_itext(pngInfo *info, const char *key, const char *langtag, const char *transkey,
-		  const char *str); /*push back the 4 texts of 1 chunk at once*/
-void png_clear_itext(pngInfo *info); /*use this to clear the itexts again after you filled them in*/
-
-/*replaces if exists*/
-u32 png_set_icc(pngInfo *info, const char *name, const u8 *profile, u32 profile_size);
-void png_clear_icc(pngInfo *info); /*use this to clear the texts again after you filled them in*/
-#endif /*PNG_COMPILE_ANCILLARY_CHUNKS*/
-
-/*
-Converts raw buffer from one color type to another color type, based on
-pngColorMode structs to describe the input and output color type.
-See the reference manual at the end of this header file to see which color conversions are supported.
-return value = png error code (0 if all went ok, an error if the conversion isn't supported)
-The out buffer must have size (w * h * bpp + 7) / 8, where bpp is the bits per pixel
-of the output color type (png_get_bpp).
-For < 8 bpp images, there should not be padding bits at the end of scanlines.
-For 16-bit per channel colors, uses big endian format like PNG does.
-Return value is png error code
-*/
-u32 png_convert(u8 *out, const u8 *in, const pngColorMode *mode_out, const pngColorMode *mode_in,
-		u32 w, u32 h);
-
-#ifdef PNG_COMPILE_DECODER
-/*
-Settings for the decoder. This contains settings for the PNG and the Zlib
-decoder, but not the Info settings from the Info structs.
-*/
-typedef struct pngDecoderSettings {
-	pngDecompressSettings zlibsettings; /*in here is the setting to ignore Adler32 checksums*/
-
-	/* Check pngDecompressSettings for more ignorable errors such as ignore_adler32 */
-	u32 ignore_crc; /*ignore CRC checksums*/
-	u32 ignore_critical; /*ignore unknown critical chunks*/
-	u32 ignore_end; /*ignore issues at end of file if possible (missing IEND chunk, too large chunk, ...)*/
-	/* TODO: make a system involving warnings with levels and a strict mode instead. Other potentially recoverable
-     errors: srgb rendering intent value, size of content of ancillary chunks, more than 79 characters for some
-     strings, placement/combination rules for ancillary chunks, crc of unknown chunks, allowed characters
-     in string keys, etc... */
-
-	u32 color_convert; /*whether to convert the PNG to the color type you want. Default: yes*/
-
-#ifdef PNG_COMPILE_ANCILLARY_CHUNKS
-	u32 read_text_chunks; /*if false but remember_unknown_chunks is true, they're stored in the unknown chunks*/
-
-	/*store all bytes from unknown chunks in the pngInfo (off by default, useful for a png editor)*/
-	u32 remember_unknown_chunks;
-
-	/* maximum size for decompressed text chunks. If a text chunk's text is larger than this, an error is returned,
-  unless reading text chunks is disabled or this limit is set higher or disabled. Set to 0 to allow any size.
-  By default it is a value that prevents unreasonably large strings from hogging memory. */
-	u32 max_text_size;
-
-	/* maximum size for compressed ICC chunks. If the ICC profile is larger than this, an error will be returned. Set to
-  0 to allow any size. By default this is a value that prevents ICC profiles that would be much larger than any
-  legitimate profile could be to hog memory. */
-	u32 max_icc_size;
-#endif /*PNG_COMPILE_ANCILLARY_CHUNKS*/
-} pngDecoderSettings;
-
-void png_decoder_settings_init(pngDecoderSettings *settings);
-#endif /*PNG_COMPILE_DECODER*/
-
-#ifdef PNG_COMPILE_ENCODER
-/*automatically use color type with less bits per pixel if losslessly possible. Default: AUTO*/
-typedef enum pngFilterStrategy {
-	/*every filter at zero*/
-	LFS_ZERO = 0,
-	/*every filter at 1, 2, 3 or 4 (paeth), unlike LFS_ZERO not a good choice, but for testing*/
-	LFS_ONE = 1,
-	LFS_TWO = 2,
-	LFS_THREE = 3,
-	LFS_FOUR = 4,
-	/*Use filter that gives minimum sum, as described in the official PNG filter heuristic.*/
-	LFS_MINSUM,
-	/*Use the filter type that gives smallest Shannon entropy for this scanline. Depending
-  on the image, this is better or worse than minsum.*/
-	LFS_ENTROPY,
-	/*
-  Brute-force-search PNG filters by compressing each filter for each scanline.
-  Experimental, very slow, and only rarely gives better compression than MINSUM.
-  */
-	LFS_BRUTE_FORCE,
-	/*use predefined_filters buffer: you specify the filter type for each scanline*/
-	LFS_PREDEFINED
-} pngFilterStrategy;
-
-/*Gives characteristics about the integer RGBA colors of the image (count, alpha channel usage, bit depth, ...),
-which helps decide which color model to use for encoding.
-Used internally by default if "auto_convert" is enabled. Public because it's useful for custom algorithms.*/
-typedef struct pngColorStats {
-	u32 colored; /*not grayscale*/
-	u32 key; /*image is not opaque and color key is possible instead of full alpha*/
-	u16 key_r; /*key values, always as 16-bit, in 8-bit case the byte is duplicated, e.g. 65535 means 255*/
-	u16 key_g;
-	u16 key_b;
-	u32 alpha; /*image is not opaque and alpha channel or alpha palette required*/
-	u32 numcolors; /*amount of colors, up to 257. Not valid if bits == 16 or allow_palette is disabled.*/
-	u8 palette[1024]; /*Remembers up to the first 256 RGBA colors, in no particular order, only valid when numcolors is valid*/
-	u32 bits; /*bits per channel (not for palette). 1,2 or 4 for grayscale only. 16 if 16-bit per channel required.*/
-	u32 numpixels;
-
-	/*user settings for computing/using the stats*/
-	u32 allow_palette; /*default 1. if 0, disallow choosing palette colortype in auto_choose_color, and don't count numcolors*/
-	u32 allow_greyscale; /*default 1. if 0, choose RGB or RGBA even if the image only has gray colors*/
-} pngColorStats;
-
-void png_color_stats_init(pngColorStats *stats);
-
-/*Get a pngColorStats of the image. The stats must already have been inited.
-Returns error code (e.g. alloc fail) or 0 if ok.*/
-u32 png_compute_color_stats(pngColorStats *stats, const u8 *image, u32 w, u32 h,
-			    const pngColorMode *mode_in);
-
-/*Settings for the encoder.*/
-typedef struct pngEncoderSettings {
-	pngCompressSettings zlibsettings; /*settings for the zlib encoder, such as window size, ...*/
-
-	u32 auto_convert; /*automatically choose output PNG color type. Default: true*/
-
-	/*If true, follows the official PNG heuristic: if the PNG uses a palette or lower than
-  8 bit depth, set all filters to zero. Otherwise use the filter_strategy. Note that to
-  completely follow the official PNG heuristic, filter_palette_zero must be true and
-  filter_strategy must be LFS_MINSUM*/
-	u32 filter_palette_zero;
-	/*Which filter strategy to use when not using zeroes due to filter_palette_zero.
-  Set filter_palette_zero to 0 to ensure always using your chosen strategy. Default: LFS_MINSUM*/
-	pngFilterStrategy filter_strategy;
-	/*used if filter_strategy is LFS_PREDEFINED. In that case, this must point to a buffer with
-  the same length as the amount of scanlines in the image, and each value must <= 5. You
-  have to cleanup this buffer, png will never free it. Don't forget that filter_palette_zero
-  must be set to 0 to ensure this is also used on palette or low bitdepth images.*/
-	const u8 *predefined_filters;
-
-	/*force creating a PLTE chunk if colortype is 2 or 6 (= a suggested palette).
-  If colortype is 3, PLTE is _always_ created.*/
-	u32 force_palette;
-#ifdef PNG_COMPILE_ANCILLARY_CHUNKS
-	/*add png identifier and version as a text chunk, for debugging*/
-	u32 add_id;
-	/*encode text chunks as zTXt chunks instead of tEXt chunks, and use compression in iTXt chunks*/
-	u32 text_compression;
-#endif /*PNG_COMPILE_ANCILLARY_CHUNKS*/
-} pngEncoderSettings;
-
-void png_encoder_settings_init(pngEncoderSettings *settings);
-#endif /*PNG_COMPILE_ENCODER*/
-
-#if defined(PNG_COMPILE_DECODER) || defined(PNG_COMPILE_ENCODER)
-/*The settings, state and information for extended encoding and decoding.*/
-typedef struct pngState {
-#ifdef PNG_COMPILE_DECODER
-	pngDecoderSettings decoder; /*the decoding settings*/
-#endif /*PNG_COMPILE_DECODER*/
-#ifdef PNG_COMPILE_ENCODER
-	pngEncoderSettings encoder; /*the encoding settings*/
-#endif /*PNG_COMPILE_ENCODER*/
-	pngColorMode
-		info_raw; /*specifies the format in which you would like to get the raw pixel buffer*/
-	pngInfo info_png; /*info of the PNG image obtained after decoding*/
-	u32 error;
-} pngState;
-
-/*init, cleanup and copy functions to use with this struct*/
-void png_state_init(pngState *state);
-void png_state_cleanup(pngState *state);
-void png_state_copy(pngState *dest, const pngState *source);
-#endif /* defined(PNG_COMPILE_DECODER) || defined(PNG_COMPILE_ENCODER) */
-
-#ifdef PNG_COMPILE_DECODER
-/*
-Same as png_decode_memory, but uses a pngState to allow custom settings and
-getting much more information about the PNG image and color mode.
-*/
-u32 png_decode(u8 **out, u32 *w, u32 *h, pngState *state, const u8 *in, u32 insize);
-
-/*
-Read the PNG header, but not the actual data. This returns only the information
-that is in the IHDR chunk of the PNG, such as width, height and color type. The
-information is placed in the info_png field of the pngState.
-*/
-u32 png_inspect(u32 *w, u32 *h, pngState *state, const u8 *in, u32 insize);
-#endif /*PNG_COMPILE_DECODER*/
-
-/*
-Reads one metadata chunk (other than IHDR) of the PNG file and outputs what it
-read in the state. Returns error code on failure.
-Use png_inspect first with a new state, then e.g. png_chunk_find_const
-to find the desired chunk type, and if non null use png_inspect_chunk (with
-chunk_pointer - start_of_file as pos).
-Supports most metadata chunks from the PNG standard (gAMA, bKGD, tEXt, ...).
-Ignores unsupported, unknown, non-metadata or IHDR chunks (without error).
-Requirements: &in[pos] must point to start of a chunk, must use regular
-png_inspect first since format of most other chunks depends on IHDR, and if
-there is a PLTE chunk, that one must be inspected before tRNS or bKGD.
-*/
-u32 png_inspect_chunk(pngState *state, u32 pos, const u8 *in, u32 insize);
-
-#ifdef PNG_COMPILE_ENCODER
-/*This function allocates the out buffer with standard malloc and stores the size in *outsize.*/
-u32 png_encode(u8 **out, u32 *outsize, const u8 *image, u32 w, u32 h, pngState *state);
-#endif /*PNG_COMPILE_ENCODER*/
-
-/*
-The png_chunk functions are normally not needed, except to traverse the
-unknown chunks stored in the pngInfo struct, or add new ones to it.
-It also allows traversing the chunks of an encoded PNG file yourself.
-
-The chunk pointer always points to the beginning of the chunk itself, that is
-the first byte of the 4 length bytes.
-
-In the PNG file format, chunks have the following format:
--4 bytes length: length of the data of the chunk in bytes (chunk itself is 12 bytes longer)
--4 bytes chunk type (ASCII a-z,A-Z only, see below)
--length bytes of data (may be 0 bytes if length was 0)
--4 bytes of CRC, computed on chunk name + data
-
-The first chunk starts at the 8th byte of the PNG file, the entire rest of the file
-exists out of concatenated chunks with the above format.
-
-PNG standard chunk ASCII naming conventions:
--First byte: uppercase = critical, lowercase = ancillary
--Second byte: uppercase = public, lowercase = private
--Third byte: must be uppercase
--Fourth byte: uppercase = unsafe to copy, lowercase = safe to copy
-*/
-
-/*
-Gets the length of the data of the chunk. Total chunk length has 12 bytes more.
-There must be at least 4 bytes to read from. If the result value is too large,
-it may be corrupt data.
-*/
-u32 png_chunk_length(const u8 *chunk);
-
-/*puts the 4-byte type in null terminated string*/
-void png_chunk_type(char type[5], const u8 *chunk);
-
-/*check if the type is the given type*/
-u8 png_chunk_type_equals(const u8 *chunk, const char *type);
-
-/*0: it's one of the critical chunk types, 1: it's an ancillary chunk (see PNG standard)*/
-u8 png_chunk_ancillary(const u8 *chunk);
-
-/*0: public, 1: private (see PNG standard)*/
-u8 png_chunk_private(const u8 *chunk);
-
-/*0: the chunk is unsafe to copy, 1: the chunk is safe to copy (see PNG standard)*/
-u8 png_chunk_safetocopy(const u8 *chunk);
-
-/*get pointer to the data of the chunk, where the input points to the header of the chunk*/
-u8 *png_chunk_data(u8 *chunk);
-const u8 *png_chunk_data_const(const u8 *chunk);
-
-/*returns 0 if the crc is correct, 1 if it's incorrect (0 for OK as usual!)*/
-u32 png_chunk_check_crc(const u8 *chunk);
-
-/*generates the correct CRC from the data and puts it in the last 4 bytes of the chunk*/
-void png_chunk_generate_crc(u8 *chunk);
-
-/*
-Iterate to next chunks, allows iterating through all chunks of the PNG file.
-Input must be at the beginning of a chunk (result of a previous png_chunk_next call,
-or the 8th byte of a PNG file which always has the first chunk), or alternatively may
-point to the first byte of the PNG file (which is not a chunk but the magic header, the
-function will then skip over it and return the first real chunk).
-Will output pointer to the start of the next chunk, or at or beyond end of the file if there
-is no more chunk after this or possibly if the chunk is corrupt.
-Start this process at the 8th byte of the PNG file.
-In a non-corrupt PNG file, the last chunk should have name "IEND".
-*/
-u8 *png_chunk_next(u8 *chunk, u8 *end);
-const u8 *png_chunk_next_const(const u8 *chunk, const u8 *end);
-
-/*Finds the first chunk with the given type in the range [chunk, end), or returns NULL if not found.*/
-u8 *png_chunk_find(u8 *chunk, u8 *end, const char type[5]);
-const u8 *png_chunk_find_const(const u8 *chunk, const u8 *end, const char type[5]);
-
-/*
-Appends chunk to the data in out. The given chunk should already have its chunk header.
-The out variable and outsize are updated to reflect the new reallocated buffer.
-Returns error code (0 if it went ok)
-*/
-u32 png_chunk_append(u8 **out, u32 *outsize, const u8 *chunk);
-
-/*
-Appends new chunk to out. The chunk to append is given by giving its length, type
-and data separately. The type is a 4-letter string.
-The out variable and outsize are updated to reflect the new reallocated buffer.
-Returne error code (0 if it went ok)
-*/
-u32 png_chunk_create(u8 **out, u32 *outsize, u32 length, const char *type, const u8 *data);
-
-/*Calculate CRC32 of buffer*/
-u32 png_crc32(const u8 *buf, u32 len);
-#endif /*PNG_COMPILE_PNG*/
-
-#ifdef PNG_COMPILE_ZLIB
-/*
-This zlib part can be used independently to zlib compress and decompress a
-buffer. It cannot be used to create gzip files however, and it only supports the
-part of zlib that is required for PNG, it does not support dictionaries.
-*/
-
-#ifdef PNG_COMPILE_DECODER
-/*Inflate a buffer. Inflate is the decompression step of deflate. Out buffer must be freed after use.*/
-u32 png_inflate(u8 **out, u32 *outsize, const u8 *in, u32 insize,
-		const pngDecompressSettings *settings);
-
-/*
-Decompresses Zlib data. Reallocates the out buffer and appends the data. The
-data must be according to the zlib specification.
-Either, *out must be NULL and *outsize must be 0, or, *out must be a valid
-buffer and *outsize its size in bytes. out must be freed by user after usage.
-*/
-u32 png_zlib_decompress(u8 **out, u32 *outsize, const u8 *in, u32 insize,
-			const pngDecompressSettings *settings);
-#endif /*PNG_COMPILE_DECODER*/
-
-#ifdef PNG_COMPILE_ENCODER
-/*
-Compresses data with Zlib. Reallocates the out buffer and appends the data.
-Zlib adds a small header and trailer around the deflate data.
-The data is output in the format of the zlib specification.
-Either, *out must be NULL and *outsize must be 0, or, *out must be a valid
-buffer and *outsize its size in bytes. out must be freed by user after usage.
-*/
-u32 png_zlib_compress(u8 **out, u32 *outsize, const u8 *in, u32 insize,
-		      const pngCompressSettings *settings);
-
-/*
-Find length-limited Huffman code for given frequencies. This function is in the
-public interface only for tests, it's used internally by png_deflate.
-*/
-u32 png_huffman_code_lengths(u32 *lengths, const u32 *frequencies, u32 numcodes, u32 maxbitlen);
-
-/*Compress a buffer with deflate. See RFC 1951. Out buffer must be freed after use.*/
-u32 png_deflate(u8 **out, u32 *outsize, const u8 *in, u32 insize,
-		const pngCompressSettings *settings);
-
-#endif /*PNG_COMPILE_ENCODER*/
-#endif /*PNG_COMPILE_ZLIB*/
-
-#ifdef PNG_COMPILE_DISK
-/*
-Load a file from disk into buffer. The function allocates the out buffer, and
-after usage you should free it.
-out: output parameter, contains pointer to loaded buffer.
-outsize: output parameter, size of the allocated out buffer
-filename: the path to the file to load
-return value: error code (0 means ok)
-*/
-u32 png_load_file(u8 **out, u32 *outsize, const char *filename);
-
-/*
-Save a file from buffer to disk. Warning, if it exists, this function overwrites
-the file without warning!
-buffer: the buffer to write
-buffersize: size of the buffer to write
-filename: the path to the file to save to
-return value: error code (0 means ok)
-*/
-u32 png_save_file(const u8 *buffer, u32 buffersize, const char *filename);
-#endif /*PNG_COMPILE_DISK*/
-
-#ifdef PNG_COMPILE_CPP
-/* The png C++ wrapper uses std::vectors instead of manually allocated memory buffers. */
-namespace png
-{
-#ifdef PNG_COMPILE_PNG
-class State : public pngState {
-    public:
-	State();
-	State(const State &other);
-	~State();
-	State &operator=(const State &other);
-};
-
-#ifdef PNG_COMPILE_DECODER
-/* Same as other png::decode, but using a State for more settings and information. */
-u32 decode(std::vector<u8> &out, u32 &w, u32 &h, State &state, const u8 *in, u32 insize);
-u32 decode(std::vector<u8> &out, u32 &w, u32 &h, State &state, const std::vector<u8> &in);
-#endif /*PNG_COMPILE_DECODER*/
-
-#ifdef PNG_COMPILE_ENCODER
-/* Same as other png::encode, but using a State for more settings and information. */
-u32 encode(std::vector<u8> &out, const u8 *in, u32 w, u32 h, State &state);
-u32 encode(std::vector<u8> &out, const std::vector<u8> &in, u32 w, u32 h, State &state);
-#endif /*PNG_COMPILE_ENCODER*/
-
-#ifdef PNG_COMPILE_DISK
-/*
-Load a file from disk into an std::vector.
-return value: error code (0 means ok)
-*/
-u32 load_file(std::vector<u8> &buffer, const std::string &filename);
-
-/*
-Save the binary data in an std::vector to a file on disk. The file is overwritten
-without warning.
-*/
-u32 save_file(const std::vector<u8> &buffer, const std::string &filename);
-#endif /* PNG_COMPILE_DISK */
-#endif /* PNG_COMPILE_PNG */
-
-#ifdef PNG_COMPILE_ZLIB
-#ifdef PNG_COMPILE_DECODER
-/* Zlib-decompress an u8 buffer */
-u32 decompress(std::vector<u8> &out, const u8 *in, u32 insize,
-	       const pngDecompressSettings &settings = png_default_decompress_settings);
-
-/* Zlib-decompress an std::vector */
-u32 decompress(std::vector<u8> &out, const std::vector<u8> &in,
-	       const pngDecompressSettings &settings = png_default_decompress_settings);
-#endif /* PNG_COMPILE_DECODER */
-
-#ifdef PNG_COMPILE_ENCODER
-/* Zlib-compress an u8 buffer */
-u32 compress(std::vector<u8> &out, const u8 *in, u32 insize,
-	     const pngCompressSettings &settings = png_default_compress_settings);
-
-/* Zlib-compress an std::vector */
-u32 compress(std::vector<u8> &out, const std::vector<u8> &in,
-	     const pngCompressSettings &settings = png_default_compress_settings);
-#endif /* PNG_COMPILE_ENCODER */
-#endif /* PNG_COMPILE_ZLIB */
-} /* namespace png */
-#endif /*PNG_COMPILE_CPP*/
-
-/*
-TODO:
-[.] test if there are no memory leaks or security exploits - done a lot but needs to be checked often
-[.] check compatibility with various compilers  - done but needs to be redone for every newer version
-[X] converting color to 16-bit per channel types
-[X] support color profile chunk types (but never let them touch RGB values by default)
-[ ] support all public PNG chunk types (almost done except sBIT, sPLT and hIST)
-[ ] make sure encoder generates no chunks with size > (2^31)-1
-[ ] partial decoding (stream processing)
-[X] let the "isFullyOpaque" function check color keys and transparent palettes too
-[X] better name for the variables "codes", "codesD", "codelengthcodes", "clcl" and "lldl"
-[ ] allow treating some errors like warnings, when image is recoverable (e.g. 69, 57, 58)
-[ ] make warnings like: oob palette, checksum fail, data after iend, wrong/unknown crit chunk, no null terminator in text, ...
-[ ] error messages with line numbers (and version)
-[ ] errors in state instead of as return code?
-[ ] new errors/warnings like suspiciously big decompressed ztxt or iccp chunk
-[ ] let the C++ wrapper catch exceptions coming from the standard library and return png error codes
-[ ] allow user to provide custom color conversion functions, e.g. for premultiplied alpha, padding bits or not, ...
-[ ] allow user to give data (void*) to custom allocator
-[X] provide alternatives for C library functions not present on some platforms (memcpy, ...)
-*/
-
-#endif /*PNG_H inclusion guard*/
diff --git a/libgui/inc/psf.h b/libgui/inc/psf.h
deleted file mode 100644
index 63a3d1e..0000000
--- a/libgui/inc/psf.h
+++ /dev/null
@@ -1,48 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-// PSF parser
-
-#ifndef PSF_H
-#define PSF_H
-
-#include <def.h>
-
-/**
- * PSF version 1
- */
-
-#define PSF1_MAGIC_0 0x36
-#define PSF1_MAGIC_1 0x04
-#define PSF1_MODE_256 0
-#define PSF1_MODE_512 1
-#define PSF1_MODE_256_UNICODE 2
-#define PSF1_MODE_512_UNICODE 3
-
-struct psf1_header {
-	u8 magic[2];
-	u8 mode;
-	u8 char_size;
-};
-
-/**
- * PSF version 2
- */
-
-#define PSF2_MAGIC_0 0x72
-#define PSF2_MAGIC_1 0xb5
-#define PSF2_MAGIC_2 0x4a
-#define PSF2_MAGIC_3 0x86
-
-struct psf2_header {
-	u8 magic[4];
-	u32 version;
-	u32 size;
-	u32 flags;
-	u32 glyph_count;
-	u32 char_size;
-	u32 height;
-	u32 width;
-};
-
-struct font *psf_parse(char *data);
-
-#endif
diff --git a/libgui/inc/vesa.h b/libgui/inc/vesa.h
deleted file mode 100644
index 892bd89..0000000
--- a/libgui/inc/vesa.h
+++ /dev/null
@@ -1,46 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#ifndef VBE_H
-#define VBE_H
-
-#include <def.h>
-
-struct vbe {
-	u16 attributes;
-	u8 window_a;
-	u8 window_b;
-	u16 granularity;
-	u16 window_size;
-	u16 segment_a;
-	u16 segment_b;
-	u32 win_func_ptr;
-	u16 pitch;
-	u16 width;
-	u16 height;
-	u8 w_char;
-	u8 y_char;
-	u8 planes;
-	u8 bpp;
-	u8 banks;
-	u8 memory_model;
-	u8 bank_size;
-	u8 image_pages;
-	u8 reserved0;
-
-	u8 red_mask;
-	u8 red_position;
-	u8 green_mask;
-	u8 green_position;
-	u8 blue_mask;
-	u8 blue_position;
-	u8 reserved_mask;
-	u8 reserved_position;
-	u8 direct_color_attributes;
-
-	u8 *fb;
-	u32 off_screen_mem_off;
-	u16 off_screen_mem_size;
-	u8 reserved1[206];
-};
-
-#endif