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freebsd-ports/graphics/fbm/files/patch-flrle.c
Thierry Thomas c974a5a28e Add RLE support.
PR:		ports/93839
Submitted by:	Pedro F. Giffuni <giffunip (at) asme.org>
2006-04-30 14:50:54 +00:00

229 lines
7.3 KiB
C

--- flrle.c.orig Mon Jun 25 04:49:20 1990
+++ flrle.c Thu Jan 13 17:29:17 2005
@@ -31,7 +31,7 @@
#ifdef RLE
-#include "svfb_global.h"
+#include "rle.h"
#define CMAP_COLORS 3
@@ -82,6 +82,9 @@
int planes;
int rowlen;
int plnlen;
+ rle_hdr out_hdr;
+
+ out_hdr = *rle_hdr_init( (rle_hdr *)0 );
if (image->hdr.physbits != 8) {
fputs ("write_rle: error: can only handle 8 physical bits per pixel\n",
@@ -95,19 +98,19 @@
rowlen = image->hdr.rowlen;
plnlen = image->hdr.plnlen;
- sv_globals.sv_ncolors = planes;
- sv_globals.sv_alpha = 0; /* no alpha channel */
- sv_globals.sv_background = 2; /* clear background to sv_bg_color */
- sv_globals.sv_xmin = 0;
- sv_globals.sv_xmax = cols - 1;
- sv_globals.sv_ymin = 0;
- sv_globals.sv_ymax = rows - 1;
- sv_globals.sv_cmaplen = 0; /* log2(color_map_length) */
+ out_hdr.ncolors = planes;
+ out_hdr.alpha = 0; /* no alpha channel */
+ out_hdr.background = 2; /* clear background to bg_color */
+ out_hdr.xmin = 0;
+ out_hdr.xmax = cols - 1;
+ out_hdr.ymin = 0;
+ out_hdr.ymax = rows - 1;
+ out_hdr.cmaplen = 0; /* log2(color_map_length) */
if (image->hdr.clrlen > 0) {
- sv_globals.sv_ncmap = CMAP_COLORS;
+ out_hdr.ncmap = CMAP_COLORS;
for (i = 1; i < image->hdr.clrlen / CMAP_COLORS; i <<= 1)
- sv_globals.sv_cmaplen++;
+ out_hdr.cmaplen++;
if ((colorMap = (rle_map *)malloc(image->hdr.clrlen*sizeof(rle_map))) ==
(rle_map *)NULL)
@@ -117,15 +120,15 @@
}
for (i = 0; i < image->hdr.clrlen; i++)
colorMap[i] = (rle_map)image->cm[i] << 8;
- sv_globals.sv_cmap = colorMap;
+ out_hdr.cmap = colorMap;
}
else {
- sv_globals.sv_ncmap = 0;
- sv_globals.sv_cmap = (rle_map *)NULL;
+ out_hdr.ncmap = 0;
+ out_hdr.cmap = (rle_map *)NULL;
}
for (channel = 0; channel < planes; channel++)
- SV_SET_BIT (sv_globals, channel);
+ RLE_SET_BIT (out_hdr, channel);
if (*image->hdr.title != '\0')
sprintf (CommentBuf (cp++), "%s=%s",
@@ -144,7 +147,7 @@
* in a comment.
*/
if (image->hdr.clrlen > 0 &&
- (1 << sv_globals.sv_cmaplen) != image->hdr.clrlen / CMAP_COLORS)
+ (1 << out_hdr.cmaplen) != image->hdr.clrlen / CMAP_COLORS)
{
sprintf (CommentBuf (cp++), "%s=%d",
CMAP_COMMENT, image->hdr.clrlen / CMAP_COLORS);
@@ -152,11 +155,11 @@
*cp = (char *)NULL;
- sv_globals.sv_comments = cp > comments ? comments : (char **)NULL;
+ out_hdr.comments = cp > comments ? comments : (char **)NULL;
- sv_globals.svfb_fd = wfile;
+ out_hdr.rle_file = wfile;
- sv_setup (RUN_DISPATCH, &sv_globals);
+ rle_put_setup (&out_hdr);
if ((rowvec = (unsigned char **)malloc (planes*sizeof(unsigned char *))) ==
(unsigned char **)NULL)
@@ -168,9 +171,9 @@
for (j = rows - 1; j >= 0; --j) {
for (channel = 0; channel < planes; channel ++)
rowvec[channel] = image->bm + j * rowlen + channel * plnlen;
- sv_putrow (rowvec, cols, &sv_globals);
+ rle_putrow (rowvec, cols, &out_hdr);
}
- sv_puteof (&sv_globals);
+ rle_puteof (&out_hdr);
free (rowvec);
while (cp > comments)
@@ -203,13 +206,16 @@
int plnlen;
int mapEntries;
int clearRow;
+ rle_hdr in_hdr;
+
+ in_hdr = *rle_hdr_init( (rle_hdr *)0 );
/* must put the magic number back so the setup code can read it */
while (mlen--)
(void)ungetc (*mstr++, rfile);
- sv_globals.svfb_fd = rfile;
- switch (rle_get_setup (&sv_globals)) {
+ in_hdr.rle_file = rfile;
+ switch (rle_get_setup (&in_hdr)) {
case 0:
break; /* success */
case -1:
@@ -229,34 +235,34 @@
stderr);
}
- if (sv_globals.sv_alpha) {
+ if (in_hdr.alpha) {
fputs ("read_rle: discarding alpha channel.\n", stderr);
- SV_CLR_BIT (sv_globals, SV_ALPHA);
+ RLE_CLR_BIT (in_hdr, RLE_ALPHA);
}
- image->hdr.cols = sv_globals.sv_xmax - sv_globals.sv_xmin + 1;
- image->hdr.rows = rows = sv_globals.sv_ymax - sv_globals.sv_ymin + 1;
- image->hdr.planes = planes = sv_globals.sv_ncolors;
- image->hdr.bits = sv_globals.sv_cmaplen ? sv_globals.sv_cmaplen : 8;
+ image->hdr.cols = in_hdr.xmax - in_hdr.xmin + 1;
+ image->hdr.rows = rows = in_hdr.ymax - in_hdr.ymin + 1;
+ image->hdr.planes = planes = in_hdr.ncolors;
+ image->hdr.bits = in_hdr.cmaplen ? in_hdr.cmaplen : 8;
image->hdr.physbits = 8;
image->hdr.rowlen = rowlen = image->hdr.cols;
image->hdr.plnlen = plnlen = image->hdr.rows * image->hdr.rowlen;
- image->hdr.clrlen = 1 << sv_globals.sv_cmaplen;
- if ((comment = rle_getcom (CMAP_COMMENT, &sv_globals)) != (char *)NULL)
+ image->hdr.clrlen = 1 << in_hdr.cmaplen;
+ if ((comment = rle_getcom (CMAP_COMMENT, &in_hdr)) != (char *)NULL)
image->hdr.clrlen = atoi (comment);
- image->hdr.clrlen *= sv_globals.sv_ncmap;
+ image->hdr.clrlen *= in_hdr.ncmap;
- if ((comment = rle_getcom (ASPECT_COMMENT, &sv_globals)) != (char *)NULL)
+ if ((comment = rle_getcom (ASPECT_COMMENT, &in_hdr)) != (char *)NULL)
image->hdr.aspect = atof (comment);
else
image->hdr.aspect = 1.0;
- if ((comment = rle_getcom (TITLE_COMMENT, &sv_globals)) != (char *)NULL)
+ if ((comment = rle_getcom (TITLE_COMMENT, &in_hdr)) != (char *)NULL)
(void)strcpy (image->hdr.title, comment);
else
image->hdr.title[0] = '\0';
- if ((comment = rle_getcom (CREDITS_COMMENT, &sv_globals)) != (char *)NULL)
+ if ((comment = rle_getcom (CREDITS_COMMENT, &in_hdr)) != (char *)NULL)
(void)strcpy (image->hdr.credits, comment);
else
image->hdr.credits[0] = '\0';
@@ -266,9 +272,9 @@
alloc_fbm (image);
if (image->hdr.clrlen > 0) {
- mapEntries = (image->hdr.clrlen / sv_globals.sv_ncmap);
+ mapEntries = (image->hdr.clrlen / in_hdr.ncmap);
cp = image->cm;
- colorMap = buildmap (&sv_globals, CMAP_COLORS, 1.0);
+ colorMap = buildmap (&in_hdr, CMAP_COLORS, 1.0, 1.0);
for (channel = 0; channel < CMAP_COLORS; channel++) {
for (j = 0; j < mapEntries; j++)
*cp++ = colorMap[channel][j];
@@ -278,26 +284,26 @@
image->hdr.clrlen = mapEntries * CMAP_COLORS; /* renormalize clrlen */
}
- switch (sv_globals.sv_background) {
+ switch (in_hdr.background) {
case 0: /* no background color was saved */
clearRow = TRUE; /* manually clear rows to 0 */
break;
case 1: /* don't clear to the background color */
- sv_globals.sv_background = 2; /* force automatic clearing */
+ in_hdr.background = 2; /* force automatic clearing */
/* fall through... */
case 2: /* clear to the background color */
clearRow = FALSE;
break;
default:
fprintf (stderr, "read_rle: unknown background flag '%d'.\n",
- sv_globals.sv_background);
+ in_hdr.background);
}
/* move image to origin */
- sv_globals.sv_xmin = 0;
- sv_globals.sv_xmax = image->hdr.cols - 1;
- sv_globals.sv_ymin = 0;
- sv_globals.sv_ymax = image->hdr.rows - 1;
+ in_hdr.xmin = 0;
+ in_hdr.xmax = image->hdr.cols - 1;
+ in_hdr.ymin = 0;
+ in_hdr.ymax = image->hdr.rows - 1;
if ((rowvec = (unsigned char **)malloc (planes*sizeof(unsigned char *))) ==
(unsigned char **)NULL)
@@ -312,7 +318,7 @@
if (clearRow)
bzero ((char *)rowvec[channel], rowlen);
}
- rle_getrow (&sv_globals, rowvec);
+ rle_getrow (&in_hdr, rowvec);
}
free (rowvec);