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-rw-r--r--hl/tools/gif2h5/hdfgifwr.c217
1 files changed, 108 insertions, 109 deletions
diff --git a/hl/tools/gif2h5/hdfgifwr.c b/hl/tools/gif2h5/hdfgifwr.c
index d44ff7a..7be68dc 100644
--- a/hl/tools/gif2h5/hdfgifwr.c
+++ b/hl/tools/gif2h5/hdfgifwr.c
@@ -44,7 +44,6 @@
* Joe Orost (decvax!vax135!petsd!joe)
*****************************************************************/
-
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@@ -65,32 +64,32 @@ static void flush_char(void);
#else
static void compress(), output(), cl_block(), cl_hash();
static void char_init(), char_out(), flush_char();
-#endif /* __STDC__ */
+#endif /* __STDC__ */
static byte pc2nc[256];
/***********************************************************************/
static unsigned long cur_accum = 0;
-static int cur_bits = 0;
+static int cur_bits = 0;
-#define MAXCODE(n_bits) ( (1 << (n_bits)) - 1)
-#define XV_BITS 12 /* BITS was already defined on some systems */
-#define HSIZE 5003 /* 80% occupancy */
+#define MAXCODE(n_bits) ((1 << (n_bits)) - 1)
+#define XV_BITS 12 /* BITS was already defined on some systems */
+#define HSIZE 5003 /* 80% occupancy */
-typedef unsigned char char_type;
+typedef unsigned char char_type;
static int n_bits; /* number of bits/code */
static int maxbits = XV_BITS; /* user settable max # bits/code */
static int maxcode; /* maximum code, given n_bits */
static int maxmaxcode = 1 << XV_BITS; /* NEVER generate this */
-static count_int *htab;
-static unsigned short *codetab;
+static count_int * htab;
+static unsigned short *codetab;
-#define HashTabOf(i) htab[i]
-#define CodeTabOf(i) codetab[i]
+#define HashTabOf(i) htab[i]
+#define CodeTabOf(i) codetab[i]
-static int hsize = HSIZE; /* for dynamic table sizing */
+static int hsize = HSIZE; /* for dynamic table sizing */
/*
* To save much memory, we overlay the table used by compress() with those
@@ -101,7 +100,7 @@ static int hsize = HSIZE; /* for dynamic table sizing */
* used to be 8000 characters).
*/
-static int free_ent = 0; /* first unused entry */
+static int free_ent = 0; /* first unused entry */
/*
* block compression parameters -- after all codes are used up,
@@ -109,8 +108,8 @@ static int free_ent = 0; /* first unused entry */
*/
static int clear_flg = 0;
-static long int in_count = 1; /* length of input */
-static long int out_count = 0; /* # of codes output (for debugging) */
+static long int in_count = 1; /* length of input */
+static long int out_count = 0; /* # of codes output (for debugging) */
/*
* compress stdin to stdout
@@ -128,19 +127,19 @@ static long int out_count = 0; /* # of codes output (for debugging) */
* about this implementation to ames!jaw.
*/
-static int g_init_bits;
+static int g_init_bits;
static FILE *g_outfile;
static int ClearCode;
static int EOFCode;
/*************************************************************/
-int hdfWriteGIF(FILE *fp, byte *pic, int ptype, int w, int h, byte *rmap,
- byte *gmap, byte *bmap, byte *pc2ncmap, int numcols,
- int colorstyle, int BitsPerPixel)
+int
+hdfWriteGIF(FILE *fp, byte *pic, int ptype, int w, int h, byte *rmap, byte *gmap, byte *bmap, byte *pc2ncmap,
+ int numcols, int colorstyle, int BitsPerPixel)
{
- int InitCodeSize;
- int i;
+ int InitCodeSize;
+ int i;
byte *pic8 = pic;
if (!(htab = calloc(HSIZE, sizeof(count_int)))) {
@@ -153,15 +152,15 @@ int hdfWriteGIF(FILE *fp, byte *pic, int ptype, int w, int h, byte *rmap,
}
/* Shut compiler up... */
- ptype=ptype;
- rmap=rmap;
- gmap=gmap;
- bmap=bmap;
- numcols=numcols;
- colorstyle=colorstyle;
+ ptype = ptype;
+ rmap = rmap;
+ gmap = gmap;
+ bmap = bmap;
+ numcols = numcols;
+ colorstyle = colorstyle;
for (i = 0; i < 256; i++) {
- pc2nc[i] = pc2ncmap[i];
+ pc2nc[i] = pc2ncmap[i];
}
if (BitsPerPixel <= 1)
@@ -170,11 +169,11 @@ int hdfWriteGIF(FILE *fp, byte *pic, int ptype, int w, int h, byte *rmap,
InitCodeSize = BitsPerPixel;
if (!fp) {
- fprintf(stderr, "WriteGIF: file not open for writing\n");
+ fprintf(stderr, "WriteGIF: file not open for writing\n");
return 1;
}
- compress(InitCodeSize+1, fp, pic8, w*h);
+ compress(InitCodeSize + 1, fp, pic8, w * h);
free(htab);
free(codetab);
@@ -182,19 +181,20 @@ int hdfWriteGIF(FILE *fp, byte *pic, int ptype, int w, int h, byte *rmap,
if (ferror(fp))
return -1;
- return 0 ;
+ return 0;
}
/********************************************************/
-static void compress(int init_bits, FILE *outfile, byte *data, int len)
+static void
+compress(int init_bits, FILE *outfile, byte *data, int len)
{
register long fcode;
- register int i = 0;
- register int c;
- register int ent;
- register int disp;
- register int hsize_reg;
- register int hshift;
+ register int i = 0;
+ register int c;
+ register int ent;
+ register int disp;
+ register int hsize_reg;
+ register int hshift;
/*
* Set up the globals: g_init_bits - initial number of bits g_outfile -
@@ -204,38 +204,38 @@ static void compress(int init_bits, FILE *outfile, byte *data, int len)
g_outfile = outfile;
/* initialize 'compress' globals */
- maxbits = XV_BITS;
- maxmaxcode = 1<<XV_BITS;
- hsize = HSIZE;
- free_ent = 0;
- clear_flg = 0;
- in_count = 1;
- out_count = 0;
- cur_accum = 0;
- cur_bits = 0;
+ maxbits = XV_BITS;
+ maxmaxcode = 1 << XV_BITS;
+ hsize = HSIZE;
+ free_ent = 0;
+ clear_flg = 0;
+ in_count = 1;
+ out_count = 0;
+ cur_accum = 0;
+ cur_bits = 0;
/* Set up the necessary values */
out_count = 0;
clear_flg = 0;
- in_count = 1;
- maxcode = MAXCODE(n_bits = g_init_bits);
+ in_count = 1;
+ maxcode = MAXCODE(n_bits = g_init_bits);
ClearCode = (1 << (init_bits - 1));
- EOFCode = ClearCode + 1;
- free_ent = ClearCode + 2;
+ EOFCode = ClearCode + 1;
+ free_ent = ClearCode + 2;
char_init();
ent = pc2nc[*data++];
len--;
hshift = 0;
- for (fcode = (long)hsize; fcode < 65536L; fcode *= 2L )
+ for (fcode = (long)hsize; fcode < 65536L; fcode *= 2L)
hshift++;
hshift = 8 - hshift; /* set hash code range bound */
hsize_reg = hsize;
- cl_hash( (count_int) hsize_reg); /* clear hash table */
+ cl_hash((count_int)hsize_reg); /* clear hash table */
output(ClearCode);
@@ -244,32 +244,33 @@ static void compress(int init_bits, FILE *outfile, byte *data, int len)
len--;
in_count++;
- fcode = (long)(((long) c << maxbits) + ent);
- i = (((int) c << hshift) ^ ent); /* xor hashing */
+ fcode = (long)(((long)c << maxbits) + ent);
+ i = (((int)c << hshift) ^ ent); /* xor hashing */
- if ( HashTabOf (i) == fcode ) {
- ent = CodeTabOf (i);
+ if (HashTabOf(i) == fcode) {
+ ent = CodeTabOf(i);
continue;
- } else if ( (long)HashTabOf (i) < 0) {
+ }
+ else if ((long)HashTabOf(i) < 0) {
/* empty slot */
goto nomatch;
}
- disp = hsize_reg - i; /* secondary hash (after G. Knott) */
+ disp = hsize_reg - i; /* secondary hash (after G. Knott) */
- if ( i == 0 )
+ if (i == 0)
disp = 1;
probe:
if ((i -= disp) < 0)
i += hsize_reg;
- if (HashTabOf (i) == fcode) {
- ent = CodeTabOf (i);
+ if (HashTabOf(i) == fcode) {
+ ent = CodeTabOf(i);
continue;
}
- if ((long)HashTabOf (i) >= 0)
+ if ((long)HashTabOf(i) >= 0)
goto probe;
nomatch:
@@ -278,9 +279,10 @@ nomatch:
ent = c;
if (free_ent < maxmaxcode) {
- CodeTabOf (i) = (unsigned short)free_ent++; /* code -> hashtable */
- HashTabOf (i) = fcode;
- } else {
+ CodeTabOf(i) = (unsigned short)free_ent++; /* code -> hashtable */
+ HashTabOf(i) = fcode;
+ }
+ else {
cl_block();
}
}
@@ -291,7 +293,6 @@ nomatch:
output(EOFCode);
}
-
/*****************************************************************
* TAG( output )
*
@@ -309,11 +310,8 @@ nomatch:
* code in turn. When the buffer fills up empty it and start over.
*/
-static
-unsigned long masks[] = { 0x0000, 0x0001, 0x0003, 0x0007, 0x000F,
- 0x001F, 0x003F, 0x007F, 0x00FF,
- 0x01FF, 0x03FF, 0x07FF, 0x0FFF,
- 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF };
+static unsigned long masks[] = {0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, 0x00FF,
+ 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF};
static void
output(int code)
@@ -327,8 +325,8 @@ output(int code)
cur_bits += n_bits;
- while( cur_bits >= 8 ) {
- char_out( (int)((unsigned int) cur_accum & 0xff) );
+ while (cur_bits >= 8) {
+ char_out((int)((unsigned int)cur_accum & 0xff));
cur_accum >>= 8;
cur_bits -= 8;
}
@@ -339,12 +337,13 @@ output(int code)
*/
if (free_ent > maxcode || clear_flg) {
if (clear_flg) {
- maxcode = MAXCODE (n_bits = g_init_bits);
+ maxcode = MAXCODE(n_bits = g_init_bits);
clear_flg = 0;
- } else {
+ }
+ else {
n_bits++;
- if ( n_bits == maxbits )
+ if (n_bits == maxbits)
maxcode = maxmaxcode;
else
maxcode = MAXCODE(n_bits);
@@ -353,17 +352,17 @@ output(int code)
if (code == EOFCode) {
/* At EOF, write the rest of the buffer */
- while( cur_bits > 0 ) {
- char_out( (int)((unsigned int)cur_accum & 0xff) );
+ while (cur_bits > 0) {
+ char_out((int)((unsigned int)cur_accum & 0xff));
cur_accum >>= 8;
cur_bits -= 8;
}
flush_char();
- fflush( g_outfile );
+ fflush(g_outfile);
#ifdef FOO
- if(ferror( g_outfile))
+ if (ferror(g_outfile))
FatalError("unable to write GIF file");
#endif
}
@@ -371,45 +370,45 @@ output(int code)
/********************************/
static void
-cl_block(void) /* table clear for block compress */
+cl_block(void) /* table clear for block compress */
{
/* Clear out the hash table */
- cl_hash((count_int) hsize);
- free_ent = ClearCode + 2;
+ cl_hash((count_int)hsize);
+ free_ent = ClearCode + 2;
clear_flg = 1;
output(ClearCode);
}
/********************************/
static void
-cl_hash(count_int hashsize) /* reset code table */
+cl_hash(count_int hashsize) /* reset code table */
{
- count_int *htab_p = htab+hashsize;
- long i, m1 = -1;
+ count_int *htab_p = htab + hashsize;
+ long i, m1 = -1;
i = hashsize - 16;
- do { /* might use Sys V memset(3) here */
- *(htab_p-16) = m1;
- *(htab_p-15) = m1;
- *(htab_p-14) = m1;
- *(htab_p-13) = m1;
- *(htab_p-12) = m1;
- *(htab_p-11) = m1;
- *(htab_p-10) = m1;
- *(htab_p-9) = m1;
- *(htab_p-8) = m1;
- *(htab_p-7) = m1;
- *(htab_p-6) = m1;
- *(htab_p-5) = m1;
- *(htab_p-4) = m1;
- *(htab_p-3) = m1;
- *(htab_p-2) = m1;
- *(htab_p-1) = m1;
+ do { /* might use Sys V memset(3) here */
+ *(htab_p - 16) = m1;
+ *(htab_p - 15) = m1;
+ *(htab_p - 14) = m1;
+ *(htab_p - 13) = m1;
+ *(htab_p - 12) = m1;
+ *(htab_p - 11) = m1;
+ *(htab_p - 10) = m1;
+ *(htab_p - 9) = m1;
+ *(htab_p - 8) = m1;
+ *(htab_p - 7) = m1;
+ *(htab_p - 6) = m1;
+ *(htab_p - 5) = m1;
+ *(htab_p - 4) = m1;
+ *(htab_p - 3) = m1;
+ *(htab_p - 2) = m1;
+ *(htab_p - 1) = m1;
htab_p -= 16;
} while ((i -= 16) >= 0);
- for ( i += 16; i > 0; i-- )
+ for (i += 16; i > 0; i--)
*--htab_p = m1;
}
@@ -436,7 +435,7 @@ char_init(void)
/*
* Define the storage for the packet accumulator
*/
-static char accum[ 256 ];
+static char accum[256];
/*
* Add a character to the end of the current packet, and if it is 254
@@ -445,7 +444,7 @@ static char accum[ 256 ];
static void
char_out(int c)
{
- accum[ a_count++ ] = (char)c;
+ accum[a_count++] = (char)c;
if (a_count >= 254)
flush_char();
@@ -458,8 +457,8 @@ static void
flush_char(void)
{
if (a_count > 0) {
- fputc( a_count, g_outfile );
- fwrite( accum, (size_t)1, (size_t)a_count, g_outfile);
+ fputc(a_count, g_outfile);
+ fwrite(accum, (size_t)1, (size_t)a_count, g_outfile);
a_count = 0;
}
}
generated by cgit v0.12 at 2024-11-22 08:10:23 (GMT)