summaryrefslogtreecommitdiff
path: root/lang/php53/files/patch-ext::gd::libgd::gd_biggif_out.c
diff options
context:
space:
mode:
Diffstat (limited to 'lang/php53/files/patch-ext::gd::libgd::gd_biggif_out.c')
-rw-r--r--lang/php53/files/patch-ext::gd::libgd::gd_biggif_out.c1087
1 files changed, 0 insertions, 1087 deletions
diff --git a/lang/php53/files/patch-ext::gd::libgd::gd_biggif_out.c b/lang/php53/files/patch-ext::gd::libgd::gd_biggif_out.c
deleted file mode 100644
index e18fc2f9b4e1..000000000000
--- a/lang/php53/files/patch-ext::gd::libgd::gd_biggif_out.c
+++ /dev/null
@@ -1,1087 +0,0 @@
---- ext/gd/libgd/gd_biggif_out.c.orig Sat Jun 28 15:47:56 2003
-+++ ext/gd/libgd/gd_biggif_out.c Sat Jun 28 15:47:56 2003
-@@ -0,0 +1,1084 @@
-+#include <stdio.h>
-+#include <math.h>
-+#include <string.h>
-+#include <stdlib.h>
-+#include "gd.h"
-+#include "gdhelpers.h"
-+
-+/*
-+** Wrapper functions for this module.
-+*/
-+
-+void gdImageBigGif(gdImagePtr im, FILE *outFile)
-+{
-+ gdIOCtx *out = gdNewFileCtx(outFile);
-+ gdImageBigGifCtx(im, out);
-+ out->gd_free(out);
-+}
-+
-+void* gdImageBigGifPtr(gdImagePtr im, int *size)
-+{
-+ void *rv;
-+ gdIOCtx *out = gdNewDynamicCtx(2048, NULL);
-+ gdImageBigGifCtx(im, out);
-+ rv = gdDPExtractData(out,size);
-+ out->gd_free(out);
-+ return rv;
-+}
-+
-+void gdImageGifAnimBegin(gdImagePtr im, FILE *outFile, int GlobalCM, int Loops)
-+{
-+ gdIOCtx *out = gdNewFileCtx(outFile);
-+ gdImageGifAnimBeginCtx(im, out, GlobalCM, Loops);
-+ out->gd_free(out);
-+}
-+
-+void *gdImageGifAnimBeginPtr(gdImagePtr im, int *size, int GlobalCM, int Loops)
-+{
-+ void *rv;
-+ gdIOCtx *out = gdNewDynamicCtx(2048, NULL);
-+ gdImageGifAnimBeginCtx(im, out, GlobalCM, Loops);
-+ rv = gdDPExtractData(out,size);
-+ out->gd_free(out);
-+ return rv;
-+}
-+
-+void gdImageBigGifAnimAdd(gdImagePtr im, FILE *outFile, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal)
-+{
-+ gdIOCtx *out = gdNewFileCtx(outFile);
-+ gdImageBigGifAnimAddCtx(im, out, LocalCM, LeftOfs, TopOfs, Delay, Disposal);
-+ out->gd_free(out);
-+}
-+
-+void *gdImageBigGifAnimAddPtr(gdImagePtr im, int *size, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal)
-+{
-+ void *rv;
-+ gdIOCtx *out = gdNewDynamicCtx(2048, NULL);
-+ gdImageBigGifAnimAddCtx(im, out, LocalCM, LeftOfs, TopOfs, Delay, Disposal);
-+ rv = gdDPExtractData(out,size);
-+ out->gd_free(out);
-+ return rv;
-+}
-+
-+void gdImageGifAnimEnd(FILE *outFile)
-+{
-+#if 1
-+ putc (';', outFile);
-+#else
-+ gdIOCtx *out = gdNewFileCtx(outFile);
-+ gdImageGifAnimEndCtx(out);
-+ out->gd_free(out);
-+#endif
-+}
-+
-+void* gdImageGifAnimEndPtr(int *size)
-+{
-+ char *rv = (char *) gdMalloc (1);
-+ *rv = ';';
-+ *size = 1;
-+ return (void *)rv;
-+}
-+
-+
-+/* Code drawn from ppmtogif.c, from the pbmplus package
-+**
-+** Based on GIFENCOD by David Rowley <mgardi@watdscu.waterloo.edu>. A
-+** Lempel-Zim compression based on "compress".
-+**
-+** Modified by Marcel Wijkstra <wijkstra@fwi.uva.nl>
-+**
-+** Copyright (C) 1989 by Jef Poskanzer.
-+**
-+** Permission to use, copy, modify, and distribute this software and its
-+** documentation for any purpose and without fee is hereby granted, provided
-+** that the above copyright notice appear in all copies and that both that
-+** copyright notice and this permission notice appear in supporting
-+** documentation. This software is provided "as is" without express or
-+** implied warranty.
-+**
-+** The Graphics Interchange Format(c) is the Copyright property of
-+** CompuServe Incorporated. GIF(sm) is a Service Mark property of
-+** CompuServe Incorporated.
-+*
-+* Heavily modified by Mouse, 1998-02-12.
-+* Remove LZW compression.
-+* Added miGIF run length compression.
-+*
-+*/
-+
-+/*
-+ * a code_int must be able to hold 2**GIFBITS values of type int, and also -1
-+ */
-+typedef int code_int;
-+
-+static int colorstobpp(int colors);
-+static void BumpPixel (void);
-+static int GIFNextPixel (gdImagePtr im);
-+static void GIFEncode (gdIOCtx *fp, int GWidth, int GHeight, int GInterlace, int Background, int Transparent, int BitsPerPixel, int *Red, int *Green, int *Blue, gdImagePtr im);
-+static void GIFAnimEncode(gdIOCtx *fp, int IWidth, int IHeight, int LeftOfs, int TopOfs, int GInterlace, int Transparent, int Delay, int Disposal, int BitsPerPixel, int *Red, int *Green, int *Blue, gdImagePtr im);
-+/*static void Putword (int w, gdIOCtx *fp); */
-+static void GIFcompress (int, gdIOCtx *, gdImagePtr);
-+static void output (code_int code);
-+
-+/* UNUSED
-+* static void char_init (void);
-+* static void char_out (int c);
-+*/
-+
-+/* Allows for reuse */
-+static void init_statics(void);
-+
-+void gdImageBigGifCtx(gdImagePtr im, gdIOCtx *out)
-+{
-+ int interlace, transparent, BitsPerPixel;
-+
-+ interlace = im->interlace;
-+ transparent = im->transparent;
-+
-+ BitsPerPixel = colorstobpp(im->colorsTotal);
-+ /* Clear any old values in statics strewn through the GIF code */
-+ init_statics();
-+ /* All set, let's do it. */
-+ GIFEncode(
-+ out, im->sx, im->sy, interlace, 0, transparent, BitsPerPixel,
-+ im->red, im->green, im->blue, im);
-+}
-+
-+void gdImageGifAnimBeginCtx(gdImagePtr im, gdIOCtx *out, int GlobalCM, int Loops)
-+{
-+ int B;
-+ int RWidth, RHeight;
-+ int Resolution;
-+ int ColorMapSize;
-+ int BitsPerPixel;
-+ int Background = 0;
-+ int i;
-+
-+ BitsPerPixel = colorstobpp(im->colorsTotal);
-+ ColorMapSize = 1 << BitsPerPixel;
-+
-+ RWidth = im->sx;
-+ RHeight = im->sy;
-+
-+ Resolution = BitsPerPixel;
-+
-+ /*
-+ * Write the Magic header
-+ */
-+ gdPutBuf( "GIF89a", 6, out );
-+
-+ /*
-+ * Write out the screen width and height
-+ */
-+ Putword( RWidth, out );
-+ Putword( RHeight, out );
-+
-+ /*
-+ * Indicate that there is a global colour map
-+ */
-+ B = GlobalCM > 0 ? 0x80 : 0;
-+
-+ /*
-+ * OR in the resolution
-+ */
-+ B |= (Resolution - 1) << 5;
-+
-+ /*
-+ * OR in the Bits per Pixel
-+ */
-+ B |= (BitsPerPixel - 1);
-+
-+ /*
-+ * Write it out
-+ */
-+ gdPutC( B, out );
-+
-+ /*
-+ * Write out the Background colour
-+ */
-+ gdPutC( Background, out );
-+
-+ /*
-+ * Byte of 0's (future expansion)
-+ */
-+ gdPutC( 0, out );
-+
-+ /*
-+ * Write out the Global Colour Map
-+ */
-+ if (GlobalCM > 0)
-+ for( i=0; i<ColorMapSize; ++i ) {
-+ gdPutC( im->red[i], out );
-+ gdPutC( im->green[i], out );
-+ gdPutC( im->blue[i], out );
-+ }
-+ if (Loops >= 0) {
-+ gdPutBuf( "!\377\13NETSCAPE2.0\3\1", 16, out );
-+ gdPutC( (unsigned char)(Loops & 255), out );
-+ gdPutC( (unsigned char)((Loops >> 8) & 255), out );
-+ gdPutC( 0, out );
-+ }
-+}
-+
-+void gdImageBigGifAnimAddCtx(gdImagePtr im, gdIOCtx *out, int LocalCM, int LeftOfs, int TopOfs, int Delay, int Disposal)
-+{
-+ int interlace, transparent, BitsPerPixel;
-+
-+ interlace = im->interlace;
-+ transparent = im->transparent;
-+
-+ BitsPerPixel = colorstobpp(im->colorsTotal);
-+ /* Clear any old values in statics strewn through the GIF code */
-+ init_statics();
-+ /* All set, let's do it. */
-+ GIFAnimEncode(
-+ out, im->sx, im->sy, LeftOfs, TopOfs, interlace, transparent,
-+ Delay, Disposal, BitsPerPixel,
-+ LocalCM > 0 ? im->red : 0, im->green, im->blue, im);
-+}
-+
-+void gdImageGifAnimEndCtx(gdIOCtx *out)
-+{
-+ /*
-+ * Write the GIF file terminator
-+ */
-+ gdPutC( ';', out );
-+}
-+
-+
-+static int
-+colorstobpp(int colors)
-+{
-+ int bpp = 0;
-+
-+ if ( colors <= 2 )
-+ bpp = 1;
-+ else if ( colors <= 4 )
-+ bpp = 2;
-+ else if ( colors <= 8 )
-+ bpp = 3;
-+ else if ( colors <= 16 )
-+ bpp = 4;
-+ else if ( colors <= 32 )
-+ bpp = 5;
-+ else if ( colors <= 64 )
-+ bpp = 6;
-+ else if ( colors <= 128 )
-+ bpp = 7;
-+ else if ( colors <= 256 )
-+ bpp = 8;
-+ return bpp;
-+ }
-+
-+/*****************************************************************************
-+ *
-+ * GIFENCODE.C - GIF Image compression interface
-+ *
-+ * GIFEncode( FName, GHeight, GWidth, GInterlace, Background, Transparent,
-+ * BitsPerPixel, Red, Green, Blue, gdImagePtr )
-+ *
-+ *****************************************************************************/
-+
-+#define TRUE 1
-+#define FALSE 0
-+
-+static int Width, Height;
-+static int curx, cury;
-+static long CountDown;
-+static int Pass = 0;
-+static int Interlace;
-+
-+/*
-+ * Bump the 'curx' and 'cury' to point to the next pixel
-+ */
-+static void
-+BumpPixel(void)
-+{
-+ /*
-+ * Bump the current X position
-+ */
-+ ++curx;
-+
-+ /*
-+ * If we are at the end of a scan line, set curx back to the beginning
-+ * If we are interlaced, bump the cury to the appropriate spot,
-+ * otherwise, just increment it.
-+ */
-+ if( curx == Width ) {
-+ curx = 0;
-+
-+ if( !Interlace )
-+ ++cury;
-+ else {
-+ switch( Pass ) {
-+
-+ case 0:
-+ cury += 8;
-+ if( cury >= Height ) {
-+ ++Pass;
-+ cury = 4;
-+ }
-+ break;
-+
-+ case 1:
-+ cury += 8;
-+ if( cury >= Height ) {
-+ ++Pass;
-+ cury = 2;
-+ }
-+ break;
-+
-+ case 2:
-+ cury += 4;
-+ if( cury >= Height ) {
-+ ++Pass;
-+ cury = 1;
-+ }
-+ break;
-+
-+ case 3:
-+ cury += 2;
-+ break;
-+ }
-+ }
-+ }
-+}
-+
-+/*
-+ * Return the next pixel from the image
-+ */
-+static int
-+GIFNextPixel(gdImagePtr im)
-+{
-+ int r;
-+
-+ if( CountDown == 0 )
-+ return EOF;
-+
-+ --CountDown;
-+
-+ r = gdImageGetPixel(im, curx, cury);
-+
-+ BumpPixel();
-+
-+ return r;
-+}
-+
-+/* public */
-+
-+static void
-+GIFEncode(gdIOCtx *fp, int GWidth, int GHeight, int GInterlace, int Background, int Transparent, int BitsPerPixel, int *Red, int *Green, int *Blue, gdImagePtr im)
-+{
-+ int B;
-+ int RWidth, RHeight;
-+ int LeftOfs, TopOfs;
-+ int Resolution;
-+ int ColorMapSize;
-+ int InitCodeSize;
-+ int i;
-+
-+ Interlace = GInterlace;
-+
-+ ColorMapSize = 1 << BitsPerPixel;
-+
-+ RWidth = Width = GWidth;
-+ RHeight = Height = GHeight;
-+ LeftOfs = TopOfs = 0;
-+
-+ Resolution = BitsPerPixel;
-+
-+ /*
-+ * Calculate number of bits we are expecting
-+ */
-+ CountDown = (long)Width * (long)Height;
-+
-+ /*
-+ * Indicate which pass we are on (if interlace)
-+ */
-+ Pass = 0;
-+
-+ /*
-+ * The initial code size
-+ */
-+ if( BitsPerPixel <= 1 )
-+ InitCodeSize = 2;
-+ else
-+ InitCodeSize = BitsPerPixel;
-+
-+ /*
-+ * Set up the current x and y position
-+ */
-+ curx = cury = 0;
-+
-+ /*
-+ * Write the Magic header
-+ */
-+ gdPutBuf( Transparent < 0 ? "GIF87a" : "GIF89a", 6, fp );
-+
-+ /*
-+ * Write out the screen width and height
-+ */
-+ Putword( RWidth, fp );
-+ Putword( RHeight, fp );
-+
-+ /*
-+ * Indicate that there is a global colour map
-+ */
-+ B = 0x80; /* Yes, there is a color map */
-+
-+ /*
-+ * OR in the resolution
-+ */
-+ B |= (Resolution - 1) << 5;
-+
-+ /*
-+ * OR in the Bits per Pixel
-+ */
-+ B |= (BitsPerPixel - 1);
-+
-+ /*
-+ * Write it out
-+ */
-+ gdPutC( B, fp );
-+
-+ /*
-+ * Write out the Background colour
-+ */
-+ gdPutC( Background, fp );
-+
-+ /*
-+ * Byte of 0's (future expansion)
-+ */
-+ gdPutC( 0, fp );
-+
-+ /*
-+ * Write out the Global Colour Map
-+ */
-+ for( i=0; i<ColorMapSize; ++i ) {
-+ gdPutC( Red[i], fp );
-+ gdPutC( Green[i], fp );
-+ gdPutC( Blue[i], fp );
-+ }
-+
-+ /*
-+ * Write out extension for transparent colour index, if necessary.
-+ */
-+ if ( Transparent >= 0 ) {
-+ gdPutC( '!', fp );
-+ gdPutC( 0xf9, fp );
-+ gdPutC( 4, fp );
-+ gdPutC( 1, fp );
-+ gdPutC( 0, fp );
-+ gdPutC( 0, fp );
-+ gdPutC( (unsigned char) Transparent, fp );
-+ gdPutC( 0, fp );
-+ }
-+
-+ /*
-+ * Write an Image separator
-+ */
-+ gdPutC( ',', fp );
-+
-+ /*
-+ * Write the Image header
-+ */
-+
-+ Putword( LeftOfs, fp );
-+ Putword( TopOfs, fp );
-+ Putword( Width, fp );
-+ Putword( Height, fp );
-+
-+ /*
-+ * Write out whether or not the image is interlaced
-+ */
-+ if( Interlace )
-+ gdPutC( 0x40, fp );
-+ else
-+ gdPutC( 0x00, fp );
-+
-+ /*
-+ * Write out the initial code size
-+ */
-+ gdPutC( InitCodeSize, fp );
-+
-+ /*
-+ * Go and actually compress the data
-+ */
-+ GIFcompress( InitCodeSize+1, fp, im );
-+
-+ /*
-+ * Write out a Zero-length packet (to end the series)
-+ */
-+ gdPutC( 0, fp );
-+
-+ /*
-+ * Write the GIF file terminator
-+ */
-+ gdPutC( ';', fp );
-+}
-+
-+static void
-+GIFAnimEncode(gdIOCtx *fp, int IWidth, int IHeight, int LeftOfs, int TopOfs, int GInterlace, int Transparent, int Delay, int Disposal, int BitsPerPixel, int *Red, int *Green, int *Blue, gdImagePtr im)
-+{
-+ int ColorMapSize;
-+ int InitCodeSize;
-+ int i;
-+
-+ if (LeftOfs < 0) LeftOfs = 0;
-+ if (TopOfs < 0) TopOfs = 0;
-+ if (Delay < 0) Delay = 100;
-+ if (Disposal < 0) Disposal = 2;
-+
-+ Interlace = GInterlace;
-+
-+ ColorMapSize = 1 << BitsPerPixel;
-+
-+ Width = IWidth;
-+ Height = IHeight;
-+
-+ /*
-+ * Calculate number of bits we are expecting
-+ */
-+ CountDown = (long)Width * (long)Height;
-+
-+ /*
-+ * Indicate which pass we are on (if interlace)
-+ */
-+ Pass = 0;
-+
-+ /*
-+ * The initial code size
-+ */
-+ if( BitsPerPixel <= 1 )
-+ InitCodeSize = 2;
-+ else
-+ InitCodeSize = BitsPerPixel;
-+
-+ /*
-+ * Set up the current x and y position
-+ */
-+ curx = cury = 0;
-+
-+ /*
-+ * Write out extension for image animation and looping
-+ */
-+ gdPutC( '!', fp );
-+ gdPutC( 0xf9, fp );
-+ gdPutC( 4, fp );
-+ gdPutC( (Transparent >= 0 ? 1 : 0)
-+ | (Disposal << 2), fp );
-+ gdPutC( (unsigned char)(Delay & 255), fp );
-+ gdPutC( (unsigned char)((Delay >> 8) & 255), fp );
-+ gdPutC( (unsigned char) Transparent, fp );
-+ gdPutC( 0, fp );
-+
-+ /*
-+ * Write an Image separator
-+ */
-+ gdPutC( ',', fp );
-+
-+ /*
-+ * Write the Image header
-+ */
-+
-+ Putword( LeftOfs, fp );
-+ Putword( TopOfs, fp );
-+ Putword( Width, fp );
-+ Putword( Height, fp );
-+
-+ /*
-+ * Write out whether or not the image is interlaced
-+ * and if it includes local colour map.
-+ */
-+ gdPutC( (Interlace ? 0x40 : 0)
-+ | (Red ? 0x80 : 0)
-+ | (Red ? BitsPerPixel - 1 : 0), fp );
-+
-+ /*
-+ * Write out the Local Colour Map
-+ */
-+ if (Red)
-+ for( i=0; i<ColorMapSize; ++i ) {
-+ gdPutC( Red[i], fp );
-+ gdPutC( Green[i], fp );
-+ gdPutC( Blue[i], fp );
-+ }
-+
-+ /*
-+ * Write out the initial code size
-+ */
-+ gdPutC( InitCodeSize, fp );
-+
-+ /*
-+ * Go and actually compress the data
-+ */
-+ GIFcompress( InitCodeSize+1, fp, im );
-+
-+ /*
-+ * Write out a Zero-length packet (to end the series)
-+ */
-+ gdPutC( 0, fp );
-+}
-+
-+/* Write out a word to the GIF file */
-+/*static void */
-+/*Putword(int w, gdIOCtx *fp) */
-+/*{ */
-+/* fputc( w & 0xff, fp ); */
-+/* fputc( (w / 256) & 0xff, fp ); */
-+/*} */
-+
-+#define GIFBITS 12
-+
-+/*-----------------------------------------------------------------------
-+ *
-+ * miGIF Compression - mouse and ivo's GIF-compatible compression
-+ *
-+ * -run length encoding compression routines-
-+ *
-+ * Copyright (C) 1998 Hutchison Avenue Software Corporation
-+ * http://www.hasc.com
-+ * info@hasc.com
-+ *
-+ * Permission to use, copy, modify, and distribute this software and its
-+ * documentation for any purpose and without fee is hereby granted, provided
-+ * that the above copyright notice appear in all copies and that both that
-+ * copyright notice and this permission notice appear in supporting
-+ * documentation. This software is provided "AS IS." The Hutchison Avenue
-+ * Software Corporation disclaims all warranties, either express or implied,
-+ * including but not limited to implied warranties of merchantability and
-+ * fitness for a particular purpose, with respect to this code and accompanying
-+ * documentation.
-+ *
-+ * The miGIF compression routines do not, strictly speaking, generate files
-+ * conforming to the GIF spec, since the image data is not LZW-compressed
-+ * (this is the point: in order to avoid transgression of the Unisys patent
-+ * on the LZW algorithm.) However, miGIF generates data streams that any
-+ * reasonably sane LZW decompresser will decompress to what we want.
-+ *
-+ * miGIF compression uses run length encoding. It compresses horizontal runs
-+ * of pixels of the same color. This type of compression gives good results
-+ * on images with many runs, for example images with lines, text and solid
-+ * shapes on a solid-colored background. It gives little or no compression
-+ * on images with few runs, for example digital or scanned photos.
-+ *
-+ * der Mouse
-+ * mouse@rodents.montreal.qc.ca
-+ * 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B
-+ *
-+ * ivo@hasc.com
-+ *
-+ * The Graphics Interchange Format(c) is the Copyright property of
-+ * CompuServe Incorporated. GIF(sm) is a Service Mark property of
-+ * CompuServe Incorporated.
-+ *
-+ */
-+
-+static int rl_pixel;
-+static int rl_basecode;
-+static int rl_count;
-+static int rl_table_pixel;
-+static int rl_table_max;
-+static int just_cleared;
-+static int out_bits;
-+static int out_bits_init;
-+static int out_count;
-+static int out_bump;
-+static int out_bump_init;
-+static int out_clear;
-+static int out_clear_init;
-+static int max_ocodes;
-+static int code_clear;
-+static int code_eof;
-+static unsigned int obuf;
-+static int obits;
-+static gdIOCtx *ofile;
-+static unsigned char oblock[256];
-+static int oblen;
-+
-+/* Used only when debugging GIF compression code */
-+/* #define DEBUGGING_ENVARS */
-+
-+#ifdef DEBUGGING_ENVARS
-+
-+static int verbose_set = 0;
-+static int verbose;
-+#define VERBOSE (verbose_set?verbose:set_verbose())
-+
-+static int set_verbose(void)
-+{
-+ verbose = !!getenv("GIF_VERBOSE");
-+ verbose_set = 1;
-+ return(verbose);
-+}
-+
-+#else
-+
-+#define VERBOSE 0
-+
-+#endif
-+
-+
-+static const char *binformat(unsigned int v, int nbits)
-+{
-+ static char bufs[8][64];
-+ static int bhand = 0;
-+ unsigned int bit;
-+ int bno;
-+ char *bp;
-+
-+ bhand --;
-+ if (bhand < 0) bhand = (sizeof(bufs)/sizeof(bufs[0]))-1;
-+ bp = &bufs[bhand][0];
-+ for (bno=nbits-1,bit=1U<<bno;bno>=0;bno--,bit>>=1)
-+ { *bp++ = (v & bit) ? '1' : '0';
-+ if (((bno&3) == 0) && (bno != 0)) *bp++ = '.';
-+ }
-+ *bp = '\0';
-+ return(&bufs[bhand][0]);
-+}
-+
-+static void write_block(void)
-+{
-+ int i;
-+
-+ if (VERBOSE)
-+ { printf("write_block %d:",oblen);
-+ for (i=0;i<oblen;i++) printf(" %02x",oblock[i]);
-+ printf("\n");
-+ }
-+ gdPutC(oblen,ofile);
-+ gdPutBuf(&oblock[0],oblen,ofile);
-+ oblen = 0;
-+}
-+
-+static void block_out(unsigned char c)
-+{
-+ if (VERBOSE) printf("block_out %s\n",binformat(c,8));
-+ oblock[oblen++] = c;
-+ if (oblen >= 255) write_block();
-+}
-+
-+static void block_flush(void)
-+{
-+ if (VERBOSE) printf("block_flush\n");
-+ if (oblen > 0) write_block();
-+}
-+
-+static void output(int val)
-+{
-+ if (VERBOSE) printf("output %s [%s %d %d]\n",binformat(val,out_bits),binformat(obuf,obits),obits,out_bits);
-+ obuf |= val << obits;
-+ obits += out_bits;
-+ while (obits >= 8)
-+ { block_out(obuf&0xff);
-+ obuf >>= 8;
-+ obits -= 8;
-+ }
-+ if (VERBOSE) printf("output leaving [%s %d]\n",binformat(obuf,obits),obits);
-+}
-+
-+static void output_flush(void)
-+{
-+ if (VERBOSE) printf("output_flush\n");
-+ if (obits > 0) block_out(obuf);
-+ block_flush();
-+}
-+
-+static void did_clear(void)
-+{
-+ if (VERBOSE) printf("did_clear\n");
-+ out_bits = out_bits_init;
-+ out_bump = out_bump_init;
-+ out_clear = out_clear_init;
-+ out_count = 0;
-+ rl_table_max = 0;
-+ just_cleared = 1;
-+}
-+
-+static void output_plain(int c)
-+{
-+ if (VERBOSE) printf("output_plain %s\n",binformat(c,out_bits));
-+ just_cleared = 0;
-+ output(c);
-+ out_count ++;
-+ if (out_count >= out_bump)
-+ { out_bits ++;
-+ out_bump += 1 << (out_bits - 1);
-+ }
-+ if (out_count >= out_clear)
-+ { output(code_clear);
-+ did_clear();
-+ }
-+}
-+
-+static unsigned int isqrt(unsigned int x)
-+{
-+ unsigned int r;
-+ unsigned int v;
-+
-+ if (x < 2) return(x);
-+ for (v=x,r=1;v;v>>=2,r<<=1) ;
-+ while (1)
-+ { v = ((x / r) + r) / 2;
-+ if ((v == r) || (v == r+1)) return(r);
-+ r = v;
-+ }
-+}
-+
-+static unsigned int compute_triangle_count(unsigned int count, unsigned int nrepcodes)
-+{
-+ unsigned int perrep;
-+ unsigned int cost;
-+
-+ cost = 0;
-+ perrep = (nrepcodes * (nrepcodes+1)) / 2;
-+ while (count >= perrep)
-+ { cost += nrepcodes;
-+ count -= perrep;
-+ }
-+ if (count > 0)
-+ { unsigned int n;
-+ n = isqrt(count);
-+ while ((n*(n+1)) >= 2*count) n --;
-+ while ((n*(n+1)) < 2*count) n ++;
-+ cost += n;
-+ }
-+ return(cost);
-+}
-+
-+static void max_out_clear(void)
-+{
-+ out_clear = max_ocodes;
-+}
-+
-+static void reset_out_clear(void)
-+{
-+ out_clear = out_clear_init;
-+ if (out_count >= out_clear)
-+ { output(code_clear);
-+ did_clear();
-+ }
-+}
-+
-+static void rl_flush_fromclear(int count)
-+{
-+ int n;
-+
-+ if (VERBOSE) printf("rl_flush_fromclear %d\n",count);
-+ max_out_clear();
-+ rl_table_pixel = rl_pixel;
-+ n = 1;
-+ while (count > 0)
-+ { if (n == 1)
-+ { rl_table_max = 1;
-+ output_plain(rl_pixel);
-+ count --;
-+ }
-+ else if (count >= n)
-+ { rl_table_max = n;
-+ output_plain(rl_basecode+n-2);
-+ count -= n;
-+ }
-+ else if (count == 1)
-+ { rl_table_max ++;
-+ output_plain(rl_pixel);
-+ count = 0;
-+ }
-+ else
-+ { rl_table_max ++;
-+ output_plain(rl_basecode+count-2);
-+ count = 0;
-+ }
-+ if (out_count == 0) n = 1; else n ++;
-+ }
-+ reset_out_clear();
-+ if (VERBOSE) printf("rl_flush_fromclear leaving table_max=%d\n",rl_table_max);
-+}
-+
-+static void rl_flush_clearorrep(int count)
-+{
-+ int withclr;
-+
-+ if (VERBOSE) printf("rl_flush_clearorrep %d\n",count);
-+ withclr = 1 + compute_triangle_count(count,max_ocodes);
-+ if (withclr < count)
-+ { output(code_clear);
-+ did_clear();
-+ rl_flush_fromclear(count);
-+ }
-+ else
-+ { for (;count>0;count--) output_plain(rl_pixel);
-+ }
-+}
-+
-+static void rl_flush_withtable(int count)
-+{
-+ int repmax;
-+ int repleft;
-+ int leftover;
-+
-+ if (VERBOSE) printf("rl_flush_withtable %d\n",count);
-+ repmax = count / rl_table_max;
-+ leftover = count % rl_table_max;
-+ repleft = (leftover ? 1 : 0);
-+ if (out_count+repmax+repleft > max_ocodes)
-+ { repmax = max_ocodes - out_count;
-+ leftover = count - (repmax * rl_table_max);
-+ repleft = 1 + compute_triangle_count(leftover,max_ocodes);
-+ }
-+ if (VERBOSE) printf("rl_flush_withtable repmax=%d leftover=%d repleft=%d\n",repmax,leftover,repleft);
-+ if (1+compute_triangle_count(count,max_ocodes) < repmax+repleft)
-+ { output(code_clear);
-+ did_clear();
-+ rl_flush_fromclear(count);
-+ return;
-+ }
-+ max_out_clear();
-+ for (;repmax>0;repmax--) output_plain(rl_basecode+rl_table_max-2);
-+ if (leftover)
-+ { if (just_cleared)
-+ { rl_flush_fromclear(leftover);
-+ }
-+ else if (leftover == 1)
-+ { output_plain(rl_pixel);
-+ }
-+ else
-+ { output_plain(rl_basecode+leftover-2);
-+ }
-+ }
-+ reset_out_clear();
-+}
-+
-+static void rl_flush(void)
-+{
-+ /* UNUSED int table_reps; */
-+ /* UNUSED int table_extra; */
-+
-+ if (VERBOSE) printf("rl_flush [ %d %d\n",rl_count,rl_pixel);
-+ if (rl_count == 1)
-+ { output_plain(rl_pixel);
-+ rl_count = 0;
-+ if (VERBOSE) printf("rl_flush ]\n");
-+ return;
-+ }
-+ if (just_cleared)
-+ { rl_flush_fromclear(rl_count);
-+ }
-+ else if ((rl_table_max < 2) || (rl_table_pixel != rl_pixel))
-+ { rl_flush_clearorrep(rl_count);
-+ }
-+ else
-+ { rl_flush_withtable(rl_count);
-+ }
-+ if (VERBOSE) printf("rl_flush ]\n");
-+ rl_count = 0;
-+}
-+
-+static void GIFcompress(int init_bits, gdIOCtx *outfile, gdImagePtr im)
-+{
-+ int c;
-+
-+ ofile = outfile;
-+ obuf = 0;
-+ obits = 0;
-+ oblen = 0;
-+ code_clear = 1 << (init_bits - 1);
-+ code_eof = code_clear + 1;
-+ rl_basecode = code_eof + 1;
-+ out_bump_init = (1 << (init_bits - 1)) - 1;
-+ /* for images with a lot of runs, making out_clear_init larger will
-+ give better compression. */
-+ out_clear_init = (init_bits <= 3) ? 9 : (out_bump_init-1);
-+#ifdef DEBUGGING_ENVARS
-+ { const char *ocienv;
-+ ocienv = getenv("GIF_OUT_CLEAR_INIT");
-+ if (ocienv)
-+ { out_clear_init = atoi(ocienv);
-+ if (VERBOSE) printf("[overriding out_clear_init to %d]\n",out_clear_init);
-+ }
-+ }
-+#endif
-+ out_bits_init = init_bits;
-+ max_ocodes = (1 << GIFBITS) - ((1 << (out_bits_init - 1)) + 3);
-+ did_clear();
-+ output(code_clear);
-+ rl_count = 0;
-+ while (1)
-+ { c = GIFNextPixel(im);
-+ if ((rl_count > 0) && (c != rl_pixel)) rl_flush();
-+ if (c == EOF) break;
-+ if (rl_pixel == c)
-+ { rl_count ++;
-+ }
-+ else
-+ { rl_pixel = c;
-+ rl_count = 1;
-+ }
-+ }
-+ output(code_eof);
-+ output_flush();
-+}
-+
-+/*-----------------------------------------------------------------------
-+ *
-+ * End of miGIF section - See copyright notice at start of section.
-+ *
-+ *-----------------------------------------------------------------------
-+*/
-+
-+/******************************************************************************
-+ *
-+ * GIF Specific routines
-+ *
-+ ******************************************************************************/
-+
-+/*
-+ * Number of characters so far in this 'packet'
-+ */
-+static int a_count;
-+
-+/*
-+ * Set up the 'byte output' routine
-+ */
-+
-+/* UNUSED
-+* static void
-+* char_init(void)
-+* {
-+* a_count = 0;
-+* }
-+*/
-+
-+/*
-+ * Define the storage for the packet accumulator
-+ */
-+
-+/* UNUSED static char accum[ 256 ]; */
-+
-+static void init_statics(void) {
-+ /* Some of these are properly initialized later. What I'm doing
-+ here is making sure code that depends on C's initialization
-+ of statics doesn't break when the code gets called more
-+ than once. */
-+ Width = 0;
-+ Height = 0;
-+ curx = 0;
-+ cury = 0;
-+ CountDown = 0;
-+ Pass = 0;
-+ Interlace = 0;
-+ a_count = 0;
-+}
-+
-+
-+/* +-------------------------------------------------------------------+ */
-+/* | Copyright 1990, 1991, 1993, David Koblas. (koblas@netcom.com) | */
-+/* | Permission to use, copy, modify, and distribute this software | */
-+/* | and its documentation for any purpose and without fee is hereby | */
-+/* | granted, provided that the above copyright notice appear in all | */
-+/* | copies and that both that copyright notice and this permission | */
-+/* | notice appear in supporting documentation. This software is | */
-+/* | provided "as is" without express or implied warranty. | */
-+/* +-------------------------------------------------------------------+ */
-+
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-07 23:10:38 +0000