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Create an overloaded cf_ReadInt and cf_ReadShort that takes a bool to indicate little endian reads.

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As suggested by @winterheart
This commit is contained in:
C.W. Betts 2024-07-02 18:34:45 -06:00
parent d817c1930e
commit 21e1384a3c
3 changed files with 15 additions and 33 deletions
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36
bitmap/iff.cpp
View File

@ -145,24 +145,6 @@ 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;
@ -194,22 +176,22 @@ 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 = 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->w = cf_ReadShort(ifile, false);
bmheader->h = cf_ReadShort(ifile, false);
bmheader->x = cf_ReadShort(ifile, false);
bmheader->y = cf_ReadShort(ifile, false);
bmheader->nplanes = cf_ReadByte(ifile);
bmheader->masking = cf_ReadByte(ifile);
bmheader->compression = cf_ReadByte(ifile);
cf_ReadByte(ifile); /* skip pad */
bmheader->transparentcolor = D3::convert_be(cf_ReadShortRaw(ifile));
bmheader->transparentcolor = cf_ReadShort(ifile, false);
bmheader->xaspect = cf_ReadByte(ifile);
bmheader->yaspect = cf_ReadByte(ifile);
bmheader->pagewidth = D3::convert_be(cf_ReadShortRaw(ifile));
bmheader->pageheight = D3::convert_be(cf_ReadShortRaw(ifile));
bmheader->pagewidth = cf_ReadShort(ifile, false);
bmheader->pageheight = cf_ReadShort(ifile, false);
iff_transparent_color = bmheader->transparentcolor;
@ -396,7 +378,7 @@ int bm_iff_parse_file(CFILE *ifile, iff_bitmap_header *bmheader, iff_bitmap_head
sig = bm_iff_get_sig(ifile);
len = D3::convert_be(cf_ReadIntRaw(ifile));
len = cf_ReadInt(ifile, false);
switch (sig) {
case IFF_SIG_FORM: {
@ -580,7 +562,7 @@ int bm_iff_read_animbrush(const char *ifilename, int *bm_list) {
return -1;
sig = bm_iff_get_sig(ifile);
form_len = D3::convert_be(cf_ReadIntRaw(ifile));
form_len = cf_ReadInt(ifile, false);
if (sig != IFF_SIG_FORM) {
mprintf(0, "Not a valid IFF file.\n");

8
cfile/cfile.cpp
View File

@ -909,17 +909,17 @@ int cf_ReadBytes(uint8_t *buf, int count, CFILE *cfp) {
// to be present.
// Read and return an integer (32 bits)
// Throws an exception of type (cfile_error *) if the OS returns an error on read
int32_t cf_ReadInt(CFILE *cfp) {
int32_t cf_ReadInt(CFILE *cfp, bool little_endian) {
int32_t i;
cf_ReadBytes((uint8_t *)&i, sizeof(i), cfp);
return INTEL_INT(i);
return little_endian ? D3::convert_le(i) : D3::convert_be(i);
}
// Read and return a int16_t (16 bits)
// Throws an exception of type (cfile_error *) if the OS returns an error on read
int16_t cf_ReadShort(CFILE *cfp) {
int16_t cf_ReadShort(CFILE *cfp, bool little_endian) {
int16_t i;
cf_ReadBytes((uint8_t *)&i, sizeof(i), cfp);
return INTEL_SHORT(i);
return little_endian ? D3::convert_le(i) : D3::convert_be(i);
}
// Read and return a byte (8 bits)
// Throws an exception of type (cfile_error *) if the OS returns an error on read

4
cfile/cfile.h
View File

@ -227,11 +227,11 @@ int cf_ReadBytes(uint8_t *buf, int count, CFILE *cfp);
// Read and return an integer (32 bits)
// Throws an exception of type (cfile_error *) if the OS returns an error on read
int32_t cf_ReadInt(CFILE *cfp);
int32_t cf_ReadInt(CFILE *cfp, bool little_endian = true);
// Read and return a int16_t (16 bits)
// Throws an exception of type (cfile_error *) if the OS returns an error on read
int16_t cf_ReadShort(CFILE *cfp);
int16_t cf_ReadShort(CFILE *cfp, bool little_endian = true);
// Read and return a byte (8 bits)
// Throws an exception of type (cfile_error *) if the OS returns an error on read