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Fix endian issues with iff importer.

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It should now work on big-endian machines.
This commit is contained in:
C.W. Betts 2024-07-02 15:48:07 -06:00
parent 7695296ca0
commit d817c1930e
1 changed files with 27 additions and 15 deletions
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42
bitmap/iff.cpp
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@ -145,6 +145,24 @@ static int bm_iff_parse_delta(CFILE *ifile, int len, iff_bitmap_header *bmheader
static int bm_iff_parse_file(CFILE *ifile, iff_bitmap_header *bmheader, iff_bitmap_header *prev_bm);
static void bm_iff_convert_8_to_16(int dest_bm, iff_bitmap_header *iffbm);
/// Read and return a raw integer (32 bits).
///
/// Throws an exception of type (cfile_error *) if the OS returns an error on read
static int32_t cf_ReadIntRaw(CFILE *cfp) {
int32_t i;
cf_ReadBytes((uint8_t *)&i, sizeof(i), cfp);
return i;
}
/// Read and return a raw \c int16_t (16 bits)
///
/// Throws an exception of type (cfile_error *) if the OS returns an error on read
static int16_t cf_ReadShortRaw(CFILE *cfp) {
int16_t i;
cf_ReadBytes((uint8_t *)&i, sizeof(i), cfp);
return i;
}
int bm_iff_get_sig(CFILE *f) {
char s[4];
int i;
@ -176,27 +194,22 @@ int bm_iff_get_sig(CFILE *f) {
int bm_iff_parse_bmhd(CFILE *ifile, uint32_t len, iff_bitmap_header *bmheader) {
len = len;
bmheader->w = cf_ReadShort(ifile);
bmheader->w = MOTOROLA_SHORT(bmheader->w);
bmheader->h = cf_ReadShort(ifile);
bmheader->h = MOTOROLA_SHORT(bmheader->h);
bmheader->x = cf_ReadShort(ifile);
bmheader->x = MOTOROLA_SHORT(bmheader->x);
bmheader->y = cf_ReadShort(ifile);
bmheader->y = MOTOROLA_SHORT(bmheader->y);
bmheader->w = D3::convert_be(cf_ReadShortRaw(ifile));
bmheader->h = D3::convert_be(cf_ReadShortRaw(ifile));
bmheader->x = D3::convert_be(cf_ReadShortRaw(ifile));
bmheader->y = D3::convert_be(cf_ReadShortRaw(ifile));
bmheader->nplanes = cf_ReadByte(ifile);
bmheader->masking = cf_ReadByte(ifile);
bmheader->compression = cf_ReadByte(ifile);
cf_ReadByte(ifile); /* skip pad */
bmheader->transparentcolor = cf_ReadShort(ifile);
bmheader->transparentcolor = MOTOROLA_SHORT(bmheader->transparentcolor);
bmheader->transparentcolor = D3::convert_be(cf_ReadShortRaw(ifile));
bmheader->xaspect = cf_ReadByte(ifile);
bmheader->yaspect = cf_ReadByte(ifile);
bmheader->pagewidth = cf_ReadShort(ifile);
bmheader->pageheight = cf_ReadShort(ifile);
bmheader->pagewidth = D3::convert_be(cf_ReadShortRaw(ifile));
bmheader->pageheight = D3::convert_be(cf_ReadShortRaw(ifile));
iff_transparent_color = bmheader->transparentcolor;
@ -383,8 +396,7 @@ int bm_iff_parse_file(CFILE *ifile, iff_bitmap_header *bmheader, iff_bitmap_head
sig = bm_iff_get_sig(ifile);
len = cf_ReadInt(ifile);
len = MOTOROLA_INT(len);
len = D3::convert_be(cf_ReadIntRaw(ifile));
switch (sig) {
case IFF_SIG_FORM: {
@ -568,7 +580,7 @@ int bm_iff_read_animbrush(const char *ifilename, int *bm_list) {
return -1;
sig = bm_iff_get_sig(ifile);
form_len = cf_ReadInt(ifile);
form_len = D3::convert_be(cf_ReadIntRaw(ifile));
if (sig != IFF_SIG_FORM) {
mprintf(0, "Not a valid IFF file.\n");