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Let SDL convert to valid Dreamcast audio formats instead of failing if the

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hardware can't be opened in a specific format. Not that you'd want to swallow
 the overhead on a Dreamcast, but hey, it's the SDL way.
This commit is contained in:
Ryan C. Gordon
2006-08-31 23:16:23 +00:00
parent 28f058713f
commit b426c969b3
1 changed files with 21 additions and 8 deletions
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29
src/audio/dc/SDL_dcaudio.c
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@@ -220,18 +220,31 @@ DCAUD_CloseAudio(_THIS)
static int
DCAUD_OpenAudio(_THIS, SDL_AudioSpec * spec)
{
switch (spec->format & 0xff) {
case 8:
spec->format = AUDIO_S8;
break;
case 16:
spec->format = AUDIO_S16LSB;
break;
default:
SDL_AudioFormat test_format = SDL_FirstAudioFormat(spec->format);
int valid_datatype = 0;
while ((!valid_datatype) && (test_format)) {
spec->format = test_format;
switch (test_format) {
/* only formats Dreamcast accepts... */
case AUDIO_S8:
case AUDIO_S16LSB:
valid_datatype = 1;
break;
default:
test_format = SDL_NextAudioFormat();
break;
}
}
if (!valid_datatype) { /* shouldn't happen, but just in case... */
SDL_SetError("Unsupported audio format");
return (-1);
}
if (spec->channels > 2)
spec->channels = 2; /* no more than stereo on the Dreamcast. */
/* Update the fragment size as size in bytes */
SDL_CalculateAudioSpec(spec);