int32_t S_PlayMusic(const char *fn)
{
if (!ud.config.MusicToggle || fn == NULL)
return 0;
int32_t fp = S_OpenAudio(fn, 0, 1);
if (EDUKE32_PREDICT_FALSE(fp < 0))
{
OSD_Printf(OSD_ERROR "S_PlayMusic(): error: can't open \"%s\" for playback!\n",fn);
return 0;
}
S_StopMusic();
int32_t MusicLen = kfilelength(fp);
if (EDUKE32_PREDICT_FALSE(MusicLen < 4))
{
OSD_Printf(OSD_ERROR "S_PlayMusic(): error: empty music file \"%s\"\n", fn);
kclose(fp);
return 0;
}
ALIGNED_FREE_AND_NULL(MusicPtr); // in case the following allocation was never freed
MusicPtr = (char *)Xaligned_alloc(16, MusicLen);
g_musicSize = kread(fp, (char *)MusicPtr, MusicLen);
if (EDUKE32_PREDICT_FALSE(g_musicSize != MusicLen))
{
OSD_Printf(OSD_ERROR "S_PlayMusic(): error: read %d bytes from \"%s\", expected %d\n",
g_musicSize, fn, MusicLen);
kclose(fp);
g_musicSize = 0;
return 0;
}
kclose(fp);
if (!Bmemcmp(MusicPtr, "MThd", 4))
{
MUSIC_PlaySong(MusicPtr, MUSIC_LoopSong);
MusicIsWaveform = 0;
}
else
{
int32_t const mvol = MASTER_VOLUME(ud.config.MusicVolume);
MusicVoice = FX_PlayLoopedAuto(MusicPtr, MusicLen, 0, 0,
0, mvol, mvol, mvol,
FX_MUSIC_PRIORITY, MUSIC_ID);
if (MusicVoice > FX_Ok)
MusicIsWaveform = 1;
}
return 0;
}
int32_t MV_Init(int32_t soundcard, int32_t MixRate, int32_t Voices, int32_t numchannels, void *initdata)
{
if (MV_Installed)
MV_Shutdown();
MV_SetErrorCode(MV_Ok);
// MV_TotalMemory + 2: FIXME, see valgrind_errors.log
int const totalmem = Voices * sizeof(VoiceNode) + MV_TOTALBUFFERSIZE + 2;
#ifdef _3DS
char *ptr = (char *) linearAlloc( totalmem);
#else
char *ptr = (char *) Xaligned_alloc(16, totalmem);
#endif
if (!ptr)
{
MV_SetErrorCode(MV_NoMem);
return MV_Error;
}
Bmemset(ptr, 0, totalmem);
MV_Voices = (VoiceNode *)ptr;
ptr += Voices * sizeof(VoiceNode);
// Set number of voices before calculating volume table
MV_MaxVoices = Voices;
LL_Reset((VoiceNode*) &VoiceList, next, prev);
LL_Reset((VoiceNode*) &VoicePool, next, prev);
for (int index = 0; index < Voices; index++)
{
LL_Add((VoiceNode*) &VoicePool, &MV_Voices[ index ], next, prev);
}
MV_SetReverseStereo(FALSE);
ASS_SoundDriver = soundcard;
// Initialize the sound card
if (SoundDriver_Init(&MixRate, &numchannels, initdata) != MV_Ok)
MV_SetErrorCode(MV_DriverError);
if (MV_ErrorCode != MV_Ok)
{
ALIGNED_FREE_AND_NULL(MV_Voices);
return MV_Error;
}
MV_Installed = TRUE;
MV_CallBackFunc = NULL;
MV_ReverbLevel = 0;
MV_ReverbTable = NULL;
// Set the sampling rate
MV_MixRate = MixRate;
// Set Mixer to play stereo digitized sound
MV_SetMixMode(numchannels);
MV_ReverbDelay = MV_BufferSize * 3;
// Make sure we don't cross a physical page
MV_MixBuffer[ MV_NumberOfBuffers ] = ptr;
for (int buffer = 0; buffer < MV_NumberOfBuffers; buffer++)
{
MV_MixBuffer[ buffer ] = ptr;
ptr += MV_BufferSize;
}
// Calculate pan table
MV_CalcPanTable();
MV_SetVolume(MV_MAXTOTALVOLUME);
// Start the playback engine
if (MV_StartPlayback() != MV_Ok)
{
// Preserve error code while we shutdown.
int status = MV_ErrorCode;
MV_Shutdown();
MV_SetErrorCode(status);
return MV_Error;
}
return MV_Ok;
}