ref: fbd0eed489f59a6fbca4eee56eef7e3f8ad52e29
dir: /src/it/readany.c/
/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* readany.c - Code to detect and read any of the / / \ \
* module formats supported by DUMB. | < / \_
* | \/ /\ /
* By Christopher Snowhill. \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include <string.h>
#include "dumb.h"
#ifdef _MSC_VER
#define strnicmp _strnicmp
#else
#if defined(unix) || defined(__unix__) || defined(__unix)
#include <strings.h>
#endif
#define strnicmp strncasecmp
#endif
enum { maximum_signature_size = 0x30 };
DUH *dumb_read_any_quick(DUMBFILE *f, int restrict_, int subsong) {
unsigned char signature[maximum_signature_size];
unsigned long signature_size;
DUH *duh = NULL;
/* signature_size = dumbfile_get_size(f); */
signature_size =
dumbfile_getnc((char *)signature, maximum_signature_size, f);
dumbfile_seek(f, 0, DFS_SEEK_SET);
if (signature_size >= 4 && signature[0] == 'I' && signature[1] == 'M' &&
signature[2] == 'P' && signature[3] == 'M') {
duh = dumb_read_it_quick(f);
} else if (signature_size >= 17 &&
!memcmp(signature, "Extended Module: ", 17)) {
duh = dumb_read_xm_quick(f);
} else if (signature_size >= 0x30 && signature[0x2C] == 'S' &&
signature[0x2D] == 'C' && signature[0x2E] == 'R' &&
signature[0x2F] == 'M') {
duh = dumb_read_s3m_quick(f);
} else if (signature_size >= 30 &&
/*signature[28] == 0x1A &&*/ signature[29] == 2 &&
(!strnicmp((const char *)signature + 20, "!Scream!", 8) ||
!strnicmp((const char *)signature + 20, "BMOD2STM", 8) ||
!strnicmp((const char *)signature + 20, "WUZAMOD!", 8))) {
duh = dumb_read_stm_quick(f);
} else if (signature_size >= 2 &&
((signature[0] == 0x69 && signature[1] == 0x66) ||
(signature[0] == 0x4A && signature[1] == 0x4E))) {
duh = dumb_read_669_quick(f);
} else if (signature_size >= 0x30 && signature[0x2C] == 'P' &&
signature[0x2D] == 'T' && signature[0x2E] == 'M' &&
signature[0x2F] == 'F') {
duh = dumb_read_ptm_quick(f);
} else if (signature_size >= 4 && signature[0] == 'P' &&
signature[1] == 'S' && signature[2] == 'M' &&
signature[3] == ' ') {
duh = dumb_read_psm_quick(f, subsong);
} else if (signature_size >= 4 && signature[0] == 'P' &&
signature[1] == 'S' && signature[2] == 'M' &&
signature[3] == 254) {
duh = dumb_read_old_psm_quick(f);
} else if (signature_size >= 3 && signature[0] == 'M' &&
signature[1] == 'T' && signature[2] == 'M') {
duh = dumb_read_mtm_quick(f);
} else if (signature_size >= 4 && signature[0] == 'R' &&
signature[1] == 'I' && signature[2] == 'F' &&
signature[3] == 'F') {
duh = dumb_read_riff_quick(f);
} else if (signature_size >= 24 &&
!memcmp(signature, "ASYLUM Music Format", 19) &&
!memcmp(signature + 19, " V1.0", 5)) {
duh = dumb_read_asy_quick(f);
} else if (signature_size >= 3 && signature[0] == 'A' &&
signature[1] == 'M' && signature[2] == 'F') {
duh = dumb_read_amf_quick(f);
} else if (signature_size >= 8 && !memcmp(signature, "OKTASONG", 8)) {
duh = dumb_read_okt_quick(f);
}
if (!duh) {
dumbfile_seek(f, 0, DFS_SEEK_SET);
duh = dumb_read_mod_quick(f, restrict_);
}
return duh;
}