980f145ee8
Added PNG support for Windows so both Direct3D and DirectDraw can use PNG for screenshots.
67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Definitions for the Simple PNG image file format handler.
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*
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* Version: @(#)win_png.h 1.0.1 2017/11/11
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*
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* Author: Fred N. van Kempen, <decwiz@yahoo.com>
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*
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* Copyright 2017 Fred N. van Kempen.
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*/
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#ifndef WIN_PNG_H
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# define WIN_PNG_H
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/* PNG defintions, as per the specification. */
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#define PNG_COLOR_TYPE 0x02 /* 3-sample sRGB */
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#define PNG_COMPRESSION_TYPE 0x00 /* deflate compression */
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#define PNG_FILTER_TYPE 0x00 /* no filtering */
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#define PNG_INTERLACE_MODE 0x00 /* no interlacing */
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/* DEFLATE definition, as per RFC1950/1 specification. */
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#define DEFL_MAX_BLKSZ 65535 /* DEFLATE max block size */
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typedef struct {
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wchar_t *name; /* name of datafile */
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FILE *fp;
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uint16_t width, /* configured with in pixels */
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height; /* configured with in pixels */
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uint8_t bpp, /* configured bits per pixel */
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ctype; /* configured color type */
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uint16_t col, /* current column */
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line, /* current scanline */
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lwidth; /* line width in bytes */
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uint8_t cdepth, /* color depth in bits */
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pwidth; /* bytes per pixel */
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uint32_t crc; /* idat chunk crc */
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uint32_t dcrc; /* deflate data crc */
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uint32_t bufcnt; /* #bytes in block */
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} png_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern void png_putlong(uint8_t *ptr, uint32_t val, int *off);
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extern void png_close(png_t *png);
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extern png_t *png_create(wchar_t *fn, int width, int height, int bpp);
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extern int png_write(png_t *png, uint8_t *bitmap, uint32_t pixels);
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#ifdef __cplusplus
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}
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#endif
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#endif /*WIN_PNG_H*/
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