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This commit is contained in:
David Rose 2000-12-04 03:27:19 +00:00
parent 0124053db8
commit b5d6b4506e
2 changed files with 20 additions and 8 deletions
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25
panda/src/pnmimagetypes/pnmFileTypeSGIReader.cxx
View File

@ -105,14 +105,14 @@ Reader(PNMFileType *type, FILE *file, bool owns_file, string magic_number) :
}
_maxval = (xelval)pixmax;
table_start = ftell(file);
if( head.storage != STORAGE_VERBATIM )
table = read_table(file, head.ysize * head.zsize);
_x_size = head.xsize;
_y_size = head.ysize;
_num_channels = head.zsize;
_num_channels = min((int)head.zsize, 4);
bpc = head.bpc;
current_row = _y_size - 1;
@ -260,6 +260,13 @@ read_header(FILE *ifp, Header *head, const string &magic_number) {
}
/* adjust ysize/zsize to dimension, just to be sure */
// On reflection, this is a bad idea. Ignore the number of
// dimensions, and take the xsize/ysize/zsize at face value. The
// table was written based on these numbers, after all; you can't
// just change them arbitrarily.
/*
switch( head->dimension ) {
case 1:
head->ysize = 1;
@ -291,6 +298,8 @@ read_header(FILE *ifp, Header *head, const string &magic_number) {
<< " (only 1-3 allowed)\n";
return false;
}
*/
return true;
}
@ -302,10 +311,12 @@ read_table(FILE *ifp, int tablen) {
table = MALLOC(tablen, TabEntry);
for( i = 0; i < tablen; i++ )
for( i = 0; i < tablen; i++ ) {
table[i].start = get_big_long(ifp);
for( i = 0; i < tablen; i++ )
}
for( i = 0; i < tablen; i++ ) {
table[i].length = get_big_long(ifp);
}
return table;
}
@ -325,8 +336,9 @@ read_channel(FILE *ifp,
short (*func)(FILE *);
func = (bpc==1) ? get_byte_as_short : get_big_short;
if ( table )
if ( table ) {
temp = (ScanElem *)alloca(WORSTCOMPR(xsize) * sizeof(ScanElem));
}
sgi_index = channel * ysize + row;
if( table ) {
@ -336,7 +348,8 @@ read_channel(FILE *ifp,
length /= 2; /* doc says length is in bytes, we are reading words */
if( fseek(ifp, offset, SEEK_SET) != 0 )
pm_error("seek error for offset %ld", offset);
nassertv(length <= WORSTCOMPR(xsize));
for( i = 0; i < length; i++ )
temp[i] = (*func)(ifp);

3
panda/src/pnmimagetypes/pnmFileTypeSGIWriter.cxx
View File

@ -125,13 +125,12 @@ write_header() {
switch (_num_channels) {
case 1:
case 2:
dimensions = 2;
break;
case 2:
case 3:
case 4:
dimensions = 3;
dimensions = 3;
break;