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backend: define z_alloca() and use for both Unix and Windows;

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replace double-slash comments with old-skool slash asterisk ones;
  define uint16_t etc for Windows ourselves and remove ms_stdint.h &
  stdint_msvc.h as no longer used;
  (backend (excepting test suite) now C89 compatible)
LICENSE: move from backend to root and move COPYING to frontend, with
  copies in frontend_qt & backend_qt, so in where it applies;
  add LICENSE section from manual to root README
This commit is contained in:
gitlost 2022-07-14 16:01:30 +01:00
parent 5ee3895bca
commit 930f458979
70 changed files with 2650 additions and 2038 deletions
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19
backend/gif.c
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@ -1,8 +1,7 @@
/* gif.c - Handles output to gif file */
/*
libzint - the open source barcode library
Copyright (C) 2009 - 2021 Robin Stuart <rstuart114@gmail.com>
Copyright (C) 2009-2022 Robin Stuart <rstuart114@gmail.com>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
@ -29,16 +28,14 @@
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
/* vim: set ts=4 sw=4 et : */
/* SPDX-License-Identifier: BSD-3-Clause */
#include <errno.h>
#include <stdio.h>
#include "common.h"
#include <math.h>
#ifdef _MSC_VER
#include <io.h>
#include <fcntl.h>
#include <malloc.h>
#endif
/* Limit initial LZW buffer size to this in expectation that compressed data will fit for typical scalings */
@ -197,7 +194,7 @@ static int gif_lzw(statestruct *pState, int paletteBitSize) {
unsigned char CodeBits;
unsigned short Pos;
// > Get first data byte
/* > Get first data byte */
if (pState->InLen == 0)
return 0;
PixelValueCur = NextPaletteIndex(pState);
@ -243,7 +240,7 @@ static int gif_lzw(statestruct *pState, int paletteBitSize) {
Res = NextCode(pState, &PixelValueCur, CodeBits);
if (Res < 0)
return 0;
//* Check for end of data stream */
/* Check for end of data stream */
if (!Res) {
/* submit 'eoi' as the last item of the code stream */
if (AddCodeToBuffer(pState, (unsigned short) (pState->ClearCode + 1), CodeBits))
@ -253,7 +250,7 @@ static int gif_lzw(statestruct *pState, int paletteBitSize) {
if (BufferNextByte(pState))
return 0;
}
// > Update last bytecount byte;
/* > Update last bytecount byte; */
if (pState->OutByteCountPos < pState->OutPosCur) {
(pState->pOut)[pState->OutByteCountPos]
= (unsigned char) (pState->OutPosCur - pState->OutByteCountPos - 1);
@ -440,13 +437,13 @@ INTERNAL int gif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf)
transparent_index = -1;
if (strlen(symbol->fgcolour) > 6) {
if ((symbol->fgcolour[6] == '0') && (symbol->fgcolour[7] == '0')) {
// Transparent foreground
/* Transparent foreground */
transparent_index = fgindex;
}
}
if (strlen(symbol->bgcolour) > 6) {
if ((symbol->bgcolour[6] == '0') && (symbol->bgcolour[7] == '0')) {
// Transparent background
/* Transparent background */
transparent_index = bgindex;
}
}
@ -616,3 +613,5 @@ INTERNAL int gif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf)
return 0;
}
/* vim: set ts=4 sw=4 et : */