mirror of https://github.com/bjornbytes/lovr.git
Update stb_image_write;
And disable stdio support for it, since it isn't needed.
This commit is contained in:
bjorn
parent
d45e56146a
commit
e24a80685b
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@ -1,2 +1,3 @@
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#define STB_IMAGE_WRITE_IMPLEMENTATION
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#define STBI_WRITE_NO_STDIO
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#include "stb_image_write.h"
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@ -1,4 +1,4 @@
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/* stb_image_write - v1.08 - public domain - http://nothings.org/stb/stb_image_write.h
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/* stb_image_write - v1.13 - public domain - http://nothings.org/stb/stb_image_write.h
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writes out PNG/BMP/TGA/JPEG/HDR images to C stdio - Sean Barrett 2010-2015
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no warranty implied; use at your own risk
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@ -17,8 +17,7 @@
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ABOUT:
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This header file is a library for writing images to C stdio. It could be
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adapted to write to memory or a general streaming interface; let me know.
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This header file is a library for writing images to C stdio or a callback.
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The PNG output is not optimal; it is 20-50% larger than the file
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written by a decent optimizing implementation; though providing a custom
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@ -38,6 +37,14 @@ BUILDING:
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The returned data will be freed with STBIW_FREE() (free() by default),
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so it must be heap allocated with STBIW_MALLOC() (malloc() by default),
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UNICODE:
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If compiling for Windows and you wish to use Unicode filenames, compile
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with
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#define STBIW_WINDOWS_UTF8
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and pass utf8-encoded filenames. Call stbiw_convert_wchar_to_utf8 to convert
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Windows wchar_t filenames to utf8.
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USAGE:
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There are five functions, one for each image file format:
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@ -45,8 +52,8 @@ USAGE:
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int stbi_write_png(char const *filename, int w, int h, int comp, const void *data, int stride_in_bytes);
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int stbi_write_bmp(char const *filename, int w, int h, int comp, const void *data);
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int stbi_write_tga(char const *filename, int w, int h, int comp, const void *data);
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int stbi_write_jpg(char const *filename, int w, int h, int comp, const void *data, int quality);
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int stbi_write_hdr(char const *filename, int w, int h, int comp, const float *data);
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int stbi_write_jpg(char const *filename, int w, int h, int comp, const float *data, int quality);
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void stbi_flip_vertically_on_write(int flag); // flag is non-zero to flip data vertically
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@ -95,7 +102,7 @@ USAGE:
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at the end of the line.)
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PNG allows you to set the deflate compression level by setting the global
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variable 'stbi_write_png_level' (it defaults to 8).
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variable 'stbi_write_png_compression_level' (it defaults to 8).
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HDR expects linear float data. Since the format is always 32-bit rgb(e)
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data, alpha (if provided) is discarded, and for monochrome data it is
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@ -133,7 +140,12 @@ CREDITS:
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github:poppolopoppo
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Patrick Boettcher
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github:xeekworx
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Cap Petschulat
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Simon Rodriguez
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Ivan Tikhonov
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github:ignotion
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Adam Schackart
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LICENSE
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See end of file for license information.
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@ -143,19 +155,26 @@ LICENSE
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#ifndef INCLUDE_STB_IMAGE_WRITE_H
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#define INCLUDE_STB_IMAGE_WRITE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdlib.h>
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// if STB_IMAGE_WRITE_STATIC causes problems, try defining STBIWDEF to 'inline' or 'static inline'
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#ifndef STBIWDEF
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#ifdef STB_IMAGE_WRITE_STATIC
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#define STBIWDEF static
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#define STBIWDEF static
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#else
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#define STBIWDEF extern
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#ifdef __cplusplus
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#define STBIWDEF extern "C"
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#else
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#define STBIWDEF extern
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#endif
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#endif
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#endif
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STBIWDEF int stbi_write_tga_with_rle;
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STBIWDEF int stbi_write_png_comperssion_level;
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STBIWDEF int stbi_write_force_png_filter;
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#ifndef STB_IMAGE_WRITE_STATIC // C++ forbids static forward declarations
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extern int stbi_write_tga_with_rle;
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extern int stbi_write_png_compression_level;
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extern int stbi_write_force_png_filter;
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#endif
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#ifndef STBI_WRITE_NO_STDIO
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STBIWDEF int stbi_write_png(char const *filename, int w, int h, int comp, const void *data, int stride_in_bytes);
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@ -163,6 +182,10 @@ STBIWDEF int stbi_write_bmp(char const *filename, int w, int h, int comp, const
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STBIWDEF int stbi_write_tga(char const *filename, int w, int h, int comp, const void *data);
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STBIWDEF int stbi_write_hdr(char const *filename, int w, int h, int comp, const float *data);
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STBIWDEF int stbi_write_jpg(char const *filename, int x, int y, int comp, const void *data, int quality);
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#ifdef STBI_WINDOWS_UTF8
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STBIWDEF int stbiw_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input);
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#endif
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#endif
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typedef void stbi_write_func(void *context, void *data, int size);
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@ -175,10 +198,6 @@ STBIWDEF int stbi_write_jpg_to_func(stbi_write_func *func, void *context, int x,
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STBIWDEF void stbi_flip_vertically_on_write(int flip_boolean);
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#ifdef __cplusplus
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}
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#endif
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#endif//INCLUDE_STB_IMAGE_WRITE_H
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#ifdef STB_IMAGE_WRITE_IMPLEMENTATION
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@ -233,8 +252,8 @@ STBIWDEF void stbi_flip_vertically_on_write(int flip_boolean);
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#define STBIW_UCHAR(x) (unsigned char) ((x) & 0xff)
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#ifdef STB_IMAGE_WRITE_STATIC
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static stbi__flip_vertically_on_write=0;
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static int stbi_write_png_compression level = 8;
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static int stbi__flip_vertically_on_write=0;
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static int stbi_write_png_compression_level = 8;
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static int stbi_write_tga_with_rle = 1;
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static int stbi_write_force_png_filter = -1;
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#else
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@ -269,15 +288,52 @@ static void stbi__stdio_write(void *context, void *data, int size)
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fwrite(data,1,size,(FILE*) context);
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}
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static int stbi__start_write_file(stbi__write_context *s, const char *filename)
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#if defined(_MSC_VER) && defined(STBI_WINDOWS_UTF8)
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#ifdef __cplusplus
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#define STBIW_EXTERN extern "C"
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#else
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#define STBIW_EXTERN extern
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#endif
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STBIW_EXTERN __declspec(dllimport) int __stdcall MultiByteToWideChar(unsigned int cp, unsigned long flags, const char *str, int cbmb, wchar_t *widestr, int cchwide);
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STBIW_EXTERN __declspec(dllimport) int __stdcall WideCharToMultiByte(unsigned int cp, unsigned long flags, const wchar_t *widestr, int cchwide, char *str, int cbmb, const char *defchar, int *used_default);
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STBIWDEF int stbiw_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input)
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{
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return WideCharToMultiByte(65001 /* UTF8 */, 0, input, -1, buffer, (int) bufferlen, NULL, NULL);
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}
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#endif
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static FILE *stbiw__fopen(char const *filename, char const *mode)
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{
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FILE *f;
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#ifdef STBI_MSC_SECURE_CRT
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if (fopen_s(&f, filename, "wb"))
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f = NULL;
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#if defined(_MSC_VER) && defined(STBI_WINDOWS_UTF8)
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wchar_t wMode[64];
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wchar_t wFilename[1024];
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if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, filename, -1, wFilename, sizeof(wFilename)))
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return 0;
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if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, mode, -1, wMode, sizeof(wMode)))
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return 0;
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#if _MSC_VER >= 1400
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if (0 != _wfopen_s(&f, wFilename, wMode))
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f = 0;
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#else
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f = fopen(filename, "wb");
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f = _wfopen(wFilename, wMode);
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#endif
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#elif defined(_MSC_VER) && _MSC_VER >= 1400
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if (0 != fopen_s(&f, filename, mode))
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f=0;
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#else
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f = fopen(filename, mode);
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#endif
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return f;
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}
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static int stbi__start_write_file(stbi__write_context *s, const char *filename)
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{
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FILE *f = stbiw__fopen(filename, "wb");
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stbi__start_write_callbacks(s, stbi__stdio_write, (void *) f);
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return f != NULL;
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}
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@ -337,7 +393,7 @@ static void stbiw__putc(stbi__write_context *s, unsigned char c)
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static void stbiw__write3(stbi__write_context *s, unsigned char a, unsigned char b, unsigned char c)
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{
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unsigned char arr[3];
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arr[0] = a, arr[1] = b, arr[2] = c;
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arr[0] = a; arr[1] = b; arr[2] = c;
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s->func(s->context, arr, 3);
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}
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@ -385,10 +441,11 @@ static void stbiw__write_pixels(stbi__write_context *s, int rgb_dir, int vdir, i
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if (stbi__flip_vertically_on_write)
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vdir *= -1;
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if (vdir < 0)
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j_end = -1, j = y-1;
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else
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j_end = y, j = 0;
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if (vdir < 0) {
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j_end = -1; j = y-1;
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} else {
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j_end = y; j = 0;
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}
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for (; j != j_end; j += vdir) {
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for (i=0; i < x; ++i) {
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@ -543,10 +600,11 @@ STBIWDEF int stbi_write_tga(char const *filename, int x, int y, int comp, const
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// *************************************************************************************************
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// Radiance RGBE HDR writer
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// by Baldur Karlsson
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#ifndef STBI_WRITE_NO_STDIO
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#define stbiw__max(a, b) ((a) > (b) ? (a) : (b))
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void stbiw__linear_to_rgbe(unsigned char *rgbe, float *linear)
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static void stbiw__linear_to_rgbe(unsigned char *rgbe, float *linear)
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{
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int exponent;
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float maxcomp = stbiw__max(linear[0], stbiw__max(linear[1], linear[2]));
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@ -563,7 +621,7 @@ void stbiw__linear_to_rgbe(unsigned char *rgbe, float *linear)
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}
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}
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void stbiw__write_run_data(stbi__write_context *s, int length, unsigned char databyte)
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static void stbiw__write_run_data(stbi__write_context *s, int length, unsigned char databyte)
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{
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unsigned char lengthbyte = STBIW_UCHAR(length+128);
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STBIW_ASSERT(length+128 <= 255);
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@ -571,7 +629,7 @@ void stbiw__write_run_data(stbi__write_context *s, int length, unsigned char dat
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s->func(s->context, &databyte, 1);
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}
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void stbiw__write_dump_data(stbi__write_context *s, int length, unsigned char *data)
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static void stbiw__write_dump_data(stbi__write_context *s, int length, unsigned char *data)
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{
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unsigned char lengthbyte = STBIW_UCHAR(length);
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STBIW_ASSERT(length <= 128); // inconsistent with spec but consistent with official code
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@ -579,7 +637,7 @@ void stbiw__write_dump_data(stbi__write_context *s, int length, unsigned char *d
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s->func(s->context, data, length);
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}
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void stbiw__write_hdr_scanline(stbi__write_context *s, int width, int ncomp, unsigned char *scratch, float *scanline)
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static void stbiw__write_hdr_scanline(stbi__write_context *s, int width, int ncomp, unsigned char *scratch, float *scanline)
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{
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unsigned char scanlineheader[4] = { 2, 2, 0, 0 };
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unsigned char rgbe[4];
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@ -680,15 +738,15 @@ static int stbi_write_hdr_core(stbi__write_context *s, int x, int y, int comp, f
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char header[] = "#?RADIANCE\n# Written by stb_image_write.h\nFORMAT=32-bit_rle_rgbe\n";
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s->func(s->context, header, sizeof(header)-1);
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#ifdef STBI_MSC_SECURE_CRT
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len = sprintf_s(buffer, "EXPOSURE= 1.0000000000000\n\n-Y %d +X %d\n", y, x);
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#ifdef __STDC_WANT_SECURE_LIB__
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len = sprintf_s(buffer, sizeof(buffer), "EXPOSURE= 1.0000000000000\n\n-Y %d +X %d\n", y, x);
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#else
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len = sprintf(buffer, "EXPOSURE= 1.0000000000000\n\n-Y %d +X %d\n", y, x);
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#endif
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s->func(s->context, buffer, len);
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for(i=0; i < y; i++)
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stbiw__write_hdr_scanline(s, x, comp, scratch, data + comp*x*(stbi__flip_vertically_on_write ? y-1-i : i)*x);
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stbiw__write_hdr_scanline(s, x, comp, scratch, data + comp*x*(stbi__flip_vertically_on_write ? y-1-i : i));
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STBIW_FREE(scratch);
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return 1;
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}
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@ -701,7 +759,6 @@ STBIWDEF int stbi_write_hdr_to_func(stbi_write_func *func, void *context, int x,
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return stbi_write_hdr_core(&s, x, y, comp, (float *) data);
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}
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#ifndef STBI_WRITE_NO_STDIO
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STBIWDEF int stbi_write_hdr(char const *filename, int x, int y, int comp, const float *data)
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{
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stbi__write_context s;
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@ -803,7 +860,7 @@ static unsigned int stbiw__zhash(unsigned char *data)
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#endif // STBIW_ZLIB_COMPRESS
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unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, int *out_len, int quality)
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STBIWDEF unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, int *out_len, int quality)
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{
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#ifdef STBIW_ZLIB_COMPRESS
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// user provided a zlib compress implementation, use that
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@ -839,7 +896,7 @@ unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, int *out_l
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for (j=0; j < n; ++j) {
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if (hlist[j]-data > i-32768) { // if entry lies within window
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int d = stbiw__zlib_countm(hlist[j], data+i, data_len-i);
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if (d >= best) best=d,bestloc=hlist[j];
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if (d >= best) { best=d; bestloc=hlist[j]; }
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}
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}
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// when hash table entry is too long, delete half the entries
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@ -898,8 +955,8 @@ unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, int *out_l
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int blocklen = (int) (data_len % 5552);
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j=0;
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while (j < data_len) {
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for (i=0; i < blocklen; ++i) s1 += data[j+i], s2 += s1;
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s1 %= 65521, s2 %= 65521;
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for (i=0; i < blocklen; ++i) { s1 += data[j+i]; s2 += s1; }
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s1 %= 65521; s2 %= 65521;
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j += blocklen;
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blocklen = 5552;
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}
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@ -917,6 +974,9 @@ unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, int *out_l
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static unsigned int stbiw__crc32(unsigned char *buffer, int len)
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{
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#ifdef STBIW_CRC32
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return STBIW_CRC32(buffer, len);
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#else
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static unsigned int crc_table[256] =
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{
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0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
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@ -958,6 +1018,7 @@ static unsigned int stbiw__crc32(unsigned char *buffer, int len)
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for (i=0; i < len; ++i)
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crc = (crc >> 8) ^ crc_table[buffer[i] ^ (crc & 0xff)];
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return ~crc;
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#endif
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}
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#define stbiw__wpng4(o,a,b,c,d) ((o)[0]=STBIW_UCHAR(a),(o)[1]=STBIW_UCHAR(b),(o)[2]=STBIW_UCHAR(c),(o)[3]=STBIW_UCHAR(d),(o)+=4)
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@ -987,31 +1048,35 @@ static void stbiw__encode_png_line(unsigned char *pixels, int stride_bytes, int
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int i;
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int type = mymap[filter_type];
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unsigned char *z = pixels + stride_bytes * (stbi__flip_vertically_on_write ? height-1-y : y);
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int signed_stride = stbi__flip_vertically_on_write ? -stride_bytes : stride_bytes;
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if (type==0) {
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memcpy(line_buffer, z, width*n);
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return;
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}
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// first loop isn't optimized since it's just one pixel
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for (i = 0; i < n; ++i) {
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switch (type) {
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case 0: line_buffer[i] = z[i]; break;
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case 1: line_buffer[i] = z[i]; break;
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case 2: line_buffer[i] = z[i] - z[i-stride_bytes]; break;
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case 3: line_buffer[i] = z[i] - (z[i-stride_bytes]>>1); break;
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case 4: line_buffer[i] = (signed char) (z[i] - stbiw__paeth(0,z[i-stride_bytes],0)); break;
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case 2: line_buffer[i] = z[i] - z[i-signed_stride]; break;
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case 3: line_buffer[i] = z[i] - (z[i-signed_stride]>>1); break;
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case 4: line_buffer[i] = (signed char) (z[i] - stbiw__paeth(0,z[i-signed_stride],0)); break;
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case 5: line_buffer[i] = z[i]; break;
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case 6: line_buffer[i] = z[i]; break;
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}
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}
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for (i=n; i < width*n; ++i) {
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switch (type) {
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case 0: line_buffer[i] = z[i]; break;
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case 1: line_buffer[i] = z[i] - z[i-n]; break;
|
||||
case 2: line_buffer[i] = z[i] - z[i-stride_bytes]; break;
|
||||
case 3: line_buffer[i] = z[i] - ((z[i-n] + z[i-stride_bytes])>>1); break;
|
||||
case 4: line_buffer[i] = z[i] - stbiw__paeth(z[i-n], z[i-stride_bytes], z[i-stride_bytes-n]); break;
|
||||
case 5: line_buffer[i] = z[i] - (z[i-n]>>1); break;
|
||||
case 6: line_buffer[i] = z[i] - stbiw__paeth(z[i-n], 0,0); break;
|
||||
}
|
||||
switch (type) {
|
||||
case 1: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - z[i-n]; break;
|
||||
case 2: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - z[i-signed_stride]; break;
|
||||
case 3: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - ((z[i-n] + z[i-signed_stride])>>1); break;
|
||||
case 4: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - stbiw__paeth(z[i-n], z[i-signed_stride], z[i-signed_stride-n]); break;
|
||||
case 5: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - (z[i-n]>>1); break;
|
||||
case 6: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - stbiw__paeth(z[i-n], 0,0); break;
|
||||
}
|
||||
}
|
||||
|
||||
unsigned char *stbi_write_png_to_mem(unsigned char *pixels, int stride_bytes, int x, int y, int n, int *out_len)
|
||||
STBIWDEF unsigned char *stbi_write_png_to_mem(const unsigned char *pixels, int stride_bytes, int x, int y, int n, int *out_len)
|
||||
{
|
||||
int force_filter = stbi_write_force_png_filter;
|
||||
int ctype[5] = { -1, 0, 4, 2, 6 };
|
||||
|
|
@ -1033,11 +1098,11 @@ unsigned char *stbi_write_png_to_mem(unsigned char *pixels, int stride_bytes, in
|
|||
int filter_type;
|
||||
if (force_filter > -1) {
|
||||
filter_type = force_filter;
|
||||
stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, force_filter, line_buffer);
|
||||
stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, force_filter, line_buffer);
|
||||
} else { // Estimate the best filter by running through all of them:
|
||||
int best_filter = 0, best_filter_val = 0x7fffffff, est, i;
|
||||
for (filter_type = 0; filter_type < 5; filter_type++) {
|
||||
stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, filter_type, line_buffer);
|
||||
stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, filter_type, line_buffer);
|
||||
|
||||
// Estimate the entropy of the line using this filter; the less, the better.
|
||||
est = 0;
|
||||
|
|
@ -1050,7 +1115,7 @@ unsigned char *stbi_write_png_to_mem(unsigned char *pixels, int stride_bytes, in
|
|||
}
|
||||
}
|
||||
if (filter_type != best_filter) { // If the last iteration already got us the best filter, don't redo it
|
||||
stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, best_filter, line_buffer);
|
||||
stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, best_filter, line_buffer);
|
||||
filter_type = best_filter;
|
||||
}
|
||||
}
|
||||
|
|
@ -1102,14 +1167,10 @@ STBIWDEF int stbi_write_png(char const *filename, int x, int y, int comp, const
|
|||
{
|
||||
FILE *f;
|
||||
int len;
|
||||
unsigned char *png = stbi_write_png_to_mem((unsigned char *) data, stride_bytes, x, y, comp, &len);
|
||||
unsigned char *png = stbi_write_png_to_mem((const unsigned char *) data, stride_bytes, x, y, comp, &len);
|
||||
if (png == NULL) return 0;
|
||||
#ifdef STBI_MSC_SECURE_CRT
|
||||
if (fopen_s(&f, filename, "wb"))
|
||||
f = NULL;
|
||||
#else
|
||||
f = fopen(filename, "wb");
|
||||
#endif
|
||||
|
||||
f = stbiw__fopen(filename, "wb");
|
||||
if (!f) { STBIW_FREE(png); return 0; }
|
||||
fwrite(png, 1, len, f);
|
||||
fclose(f);
|
||||
|
|
@ -1121,7 +1182,7 @@ STBIWDEF int stbi_write_png(char const *filename, int x, int y, int comp, const
|
|||
STBIWDEF int stbi_write_png_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data, int stride_bytes)
|
||||
{
|
||||
int len;
|
||||
unsigned char *png = stbi_write_png_to_mem((unsigned char *) data, stride_bytes, x, y, comp, &len);
|
||||
unsigned char *png = stbi_write_png_to_mem((const unsigned char *) data, stride_bytes, x, y, comp, &len);
|
||||
if (png == NULL) return 0;
|
||||
func(context, png, len);
|
||||
STBIW_FREE(png);
|
||||
|
|
@ -1416,15 +1477,13 @@ static int stbi_write_jpg_core(stbi__write_context *s, int width, int height, in
|
|||
for(x = 0; x < width; x += 8) {
|
||||
float YDU[64], UDU[64], VDU[64];
|
||||
for(row = y, pos = 0; row < y+8; ++row) {
|
||||
// row >= height => use last input row
|
||||
int clamped_row = (row < height) ? row : height - 1;
|
||||
int base_p = (stbi__flip_vertically_on_write ? (height-1-clamped_row) : clamped_row)*width*comp;
|
||||
for(col = x; col < x+8; ++col, ++pos) {
|
||||
int p = (stbi__flip_vertically_on_write ? height-1-row : row)*width*comp + col*comp;
|
||||
float r, g, b;
|
||||
if(row >= height) {
|
||||
p -= width*comp*(row+1 - height);
|
||||
}
|
||||
if(col >= width) {
|
||||
p -= comp*(col+1 - width);
|
||||
}
|
||||
// if col >= width => use pixel from last input column
|
||||
int p = base_p + ((col < width) ? col : (width-1))*comp;
|
||||
|
||||
r = imageData[p+0];
|
||||
g = imageData[p+ofsG];
|
||||
|
|
@ -1476,6 +1535,10 @@ STBIWDEF int stbi_write_jpg(char const *filename, int x, int y, int comp, const
|
|||
#endif // STB_IMAGE_WRITE_IMPLEMENTATION
|
||||
|
||||
/* Revision history
|
||||
1.10 (2019-02-07)
|
||||
support utf8 filenames in Windows; fix warnings and platform ifdefs
|
||||
1.09 (2018-02-11)
|
||||
fix typo in zlib quality API, improve STB_I_W_STATIC in C++
|
||||
1.08 (2018-01-29)
|
||||
add stbi__flip_vertically_on_write, external zlib, zlib quality, choose PNG filter
|
||||
1.07 (2017-07-24)
|
||||
|
|
|
|||
Loading…
Reference in New Issue