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Refactor audio to enable bgm looping

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SDL_mixer reads loop information from WAV files if you use the Mix_Music
interface, but NOT the Mix_Chunk interface. So bgm now uses the
Mix_Music interface to get proper looping.

There's also some code here for reading bgi files (taken from xsystem35)
but it's not actually used. There doesn't seem to be a simple way to set
up custom loops with SDL_mixer.
This commit is contained in:
Nunuhara Cabbage
2020-07-12 12:07:40 -07:00
parent 58da6dc167
commit 0e4e52a25d
6 changed files with 352 additions and 145 deletions
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src/system4.c
+38 -24
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@@ -140,31 +140,45 @@ static void init_gamedata_dir(const char *path)
int dno;
size_t len = strlen(d->d_name);
snprintf(filepath, 511, "%s/%s", path, d->d_name);
if (strcasecmp(d->d_name+len-4, ".ald"))
continue;
dno = toupper(*(d->d_name+len-5)) - 'A';
if (dno < 0 || dno >= ALD_FILEMAX)
continue;
if (!strcasecmp(d->d_name+len-4, ".ald")) {
dno = toupper(*(d->d_name+len-5)) - 'A';
if (dno < 0 || dno >= ALD_FILEMAX) {
WARNING("Invalid ALD index: %s", d->d_name);
continue;
}
switch (*(d->d_name+len-6)) {
case 'b':
case 'B':
ald_filenames[ALDFILE_BGM][dno] = strdup(filepath);
ald_count[ALDFILE_BGM] = max(ald_count[ALDFILE_BGM], dno+1);
break;
case 'g':
case 'G':
ald_filenames[ALDFILE_CG][dno] = strdup(filepath);
ald_count[ALDFILE_CG] = max(ald_count[ALDFILE_CG], dno+1);
break;
case 'w':
case 'W':
ald_filenames[ALDFILE_WAVE][dno] = strdup(filepath);
ald_count[ALDFILE_WAVE] = max(ald_count[ALDFILE_WAVE], dno+1);
break;
default:
WARNING("Unhandled ALD file: %s", d->d_name);
break;
switch (*(d->d_name+len-6)) {
case 'b':
case 'B':
ald_filenames[ALDFILE_BGM][dno] = strdup(filepath);
ald_count[ALDFILE_BGM] = max(ald_count[ALDFILE_BGM], dno+1);
break;
case 'g':
case 'G':
ald_filenames[ALDFILE_CG][dno] = strdup(filepath);
ald_count[ALDFILE_CG] = max(ald_count[ALDFILE_CG], dno+1);
break;
case 'w':
case 'W':
ald_filenames[ALDFILE_WAVE][dno] = strdup(filepath);
ald_count[ALDFILE_WAVE] = max(ald_count[ALDFILE_WAVE], dno+1);
break;
default:
WARNING("Unhandled ALD file: %s", d->d_name);
break;
}
} else if (!strcasecmp(d->d_name+len-4, ".bgi")) {
if (config.bgi_path) {
WARNING("Multiple bgi files");
continue;
}
config.bgi_path = strdup(filepath);
} else if (!strcasecmp(d->d_name+len-4, ".wai")) {
if (config.wai_path) {
WARNING("Multiple wai files");
continue;
}
config.wai_path = strdup(filepath);
}
}