// Ensure that the specified music track is in memory, loading it if required
void music_load(enum music_track track)
{
char name[80] = "";
FILE * midi_f;
char * midi_data = NULL;
size_t fileLength;
int i;
OSStatus rv;
// Don't (try to) load the track twice
if (music_files[track].sequence_loaded || music_files[track].unplayable)
return;
// Find the name for this track
for (i = 0; music_key[i].track != M_MAX_MUSIC; i++) {
if (music_key[i].track == track && music_key[i].name) {
snprintf(name, sizeof(name), "%s.MID", music_key[track].name);
break;
}
}
// Bail out if this track isn't known
if (strlen(name) == 0) {
music_files[track].unplayable = 1;
return;
}
// Read the MIDI file into memory
midi_f = sOpen(name, "rb", FT_MIDI);
if (midi_f != NULL) {
fileLength = fread_dyn(&midi_data, &fileLength, midi_f);
fclose(midi_f);
}
if (midi_data == NULL) {
WARNING2("could not read MIDI file `%s'", name);
music_files[track].unplayable = 1;
return;
}
// Initialize the sequence
rv = NewMusicSequence(&music_files[track].sequence);
if (rv == 0) {
// Try to load the sequence out of this buffer
#if MAC_OS_X_VERSION_MIN_REQUIRED <= MAC_OS_X_VERSION_10_4 /* this is deprecated, but works back to 10.3 */
rv = MusicSequenceLoadSMFDataWithFlags(music_files[track].sequence, CFDataCreate(NULL, (UInt8*)midi_data, fileLength), 0);
#else /* not deprecated, but requires 10.5 or later */
rv = MusicSequenceFileLoadData(music_files[track].sequence, CFDataCreate(NULL, (UInt8*)midi_data, fileLength), 0, 0);
#endif
}
// Regardless, free the buffer we read off disk, if any
free(midi_data);
// Did it work?
if (rv) {
WARNING2("could not understand MIDI file `%s'", name);
music_files[track].unplayable = 1;
} else {
music_files[track].sequence_loaded = 1;
}
}
NativeMidiSong *native_midi_loadsong_RW(SDL_RWops *src, int freesrc)
{
NativeMidiSong *retval = NULL;
void *buf = NULL;
Sint64 len = 0;
CFDataRef data = NULL;
if (SDL_RWseek(src, 0, RW_SEEK_END) < 0)
goto fail;
len = SDL_RWtell(src);
if (len < 0)
goto fail;
if (SDL_RWseek(src, 0, RW_SEEK_SET) < 0)
goto fail;
buf = malloc(len);
if (buf == NULL)
goto fail;
if (SDL_RWread(src, buf, len, 1) != 1)
goto fail;
retval = malloc(sizeof(NativeMidiSong));
if (retval == NULL)
goto fail;
memset(retval, '\0', sizeof (*retval));
if (NewMusicPlayer(&retval->player) != noErr)
goto fail;
if (NewMusicSequence(&retval->sequence) != noErr)
goto fail;
data = CFDataCreate(NULL, (const UInt8 *) buf, len);
if (data == NULL)
goto fail;
free(buf);
buf = NULL;
#if MAC_OS_X_VERSION_MIN_REQUIRED < 1050
/* MusicSequenceLoadSMFData() (avail. in 10.2, no 64 bit) is
* equivalent to calling MusicSequenceLoadSMFDataWithFlags()
* with a flags value of 0 (avail. in 10.3, avail. 64 bit).
* So, we use MusicSequenceLoadSMFData() for powerpc versions
* but the *WithFlags() on intel which require 10.4 anyway. */
# if defined(__ppc__) || defined(__POWERPC__)
if (MusicSequenceLoadSMFData(song->sequence, data) != noErr)
goto fail;
# else
if (MusicSequenceLoadSMFDataWithFlags(retval->sequence, data, 0) != noErr)
goto fail;
# endif
#else /* MusicSequenceFileLoadData() requires 10.5 or later. */
if (MusicSequenceFileLoadData(retval->sequence, data, 0, 0) != noErr)
goto fail;
#endif
CFRelease(data);
data = NULL;
if (GetSequenceLength(retval->sequence, &retval->endTime) != noErr)
goto fail;
if (MusicPlayerSetSequence(retval->player, retval->sequence) != noErr)
goto fail;
if (freesrc)
SDL_RWclose(src);
return retval;
fail:
if (retval) {
if (retval->sequence)
DisposeMusicSequence(retval->sequence);
if (retval->player)
DisposeMusicPlayer(retval->player);
free(retval);
}
if (data)
CFRelease(data);
if (buf)
free(buf);
return NULL;
}
NativeMidiSong *native_midi_loadsong_RW(SDL_RWops *rw)
{
NativeMidiSong *retval = NULL;
void *buf = NULL;
int len = 0;
CFDataRef data = NULL;
if (SDL_RWseek(rw, 0, RW_SEEK_END) < 0)
goto fail;
len = SDL_RWtell(rw);
if (len < 0)
goto fail;
if (SDL_RWseek(rw, 0, RW_SEEK_SET) < 0)
goto fail;
buf = malloc(len);
if (buf == NULL)
goto fail;
if (SDL_RWread(rw, buf, len, 1) != 1)
goto fail;
retval = malloc(sizeof(NativeMidiSong));
if (retval == NULL)
goto fail;
memset(retval, '\0', sizeof (*retval));
if (NewMusicPlayer(&retval->player) != noErr)
goto fail;
if (NewMusicSequence(&retval->sequence) != noErr)
goto fail;
data = CFDataCreate(NULL, (const UInt8 *) buf, len);
if (data == NULL)
goto fail;
free(buf);
buf = NULL;
#if MAC_OS_X_VERSION_MIN_REQUIRED <= MAC_OS_X_VERSION_10_4 /* this is deprecated, but works back to 10.3 */
if (MusicSequenceLoadSMFDataWithFlags(retval->sequence, data, 0) != noErr)
goto fail;
#else /* not deprecated, but requires 10.5 or later */
if (MusicSequenceFileLoadData(retval->sequence, data, 0, 0) != noErr)
goto fail;
#endif
CFRelease(data);
data = NULL;
if (GetSequenceLength(retval->sequence, &retval->endTime) != noErr)
goto fail;
if (MusicPlayerSetSequence(retval->player, retval->sequence) != noErr)
goto fail;
return retval;
fail:
if (retval) {
if (retval->sequence)
DisposeMusicSequence(retval->sequence);
if (retval->player)
DisposeMusicPlayer(retval->player);
free(retval);
}
if (data)
CFRelease(data);
if (buf)
free(buf);
return NULL;
}
