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Rewrote native Mac OS X MIDI support to be 10.6 and 64-bit clean.
This uses Core MIDI now, instead of QuickTime, so it's Snow Leopard and 64-bit compatible. There's one deprecated API used (still available in 10.6 and 64-bit, though), that is cool for 10.3 to 10.5...you can flip an #if to get the 10.5-and-later, undeprecated API. This is initial, first shot stuff, but it works with playmus. Please test! Only updated configure script; Xcode project needs updating still.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,242 @@ | ||
| /* | ||
| native_midi_macosx: Native Midi support on Mac OS X for the SDL_mixer library | ||
| Copyright (C) 2009 Ryan C. Gordon | ||
| This library is free software; you can redistribute it and/or | ||
| modify it under the terms of the GNU Library General Public | ||
| License as published by the Free Software Foundation; either | ||
| version 2 of the License, or (at your option) any later version. | ||
| This library is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| Library General Public License for more details. | ||
| You should have received a copy of the GNU Library General Public | ||
| License along with this library; if not, write to the Free | ||
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| Ryan C. Gordon | ||
| icculus@icculus.org | ||
| */ | ||
|
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||
| /* This is Mac OS X only, using Core MIDI. | ||
| Mac OS 9 support via QuickTime is in native_midi_mac.c */ | ||
|
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| #include "SDL_config.h" | ||
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| #if __MACOSX__ | ||
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| #include <AudioToolbox/AudioToolbox.h> | ||
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| #include "SDL_endian.h" | ||
| #include "native_midi.h" | ||
|
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| /* Native Midi song */ | ||
| struct _NativeMidiSong | ||
| { | ||
| MusicPlayer player; | ||
| MusicSequence sequence; | ||
| MusicTimeStamp endTime; | ||
| }; | ||
|
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| static NativeMidiSong *currentsong = NULL; | ||
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| static OSStatus | ||
| GetSequenceLength(MusicSequence sequence, MusicTimeStamp *_sequenceLength) | ||
| { | ||
| // http://lists.apple.com/archives/Coreaudio-api/2003/Jul/msg00370.html | ||
| // figure out sequence length | ||
| UInt32 ntracks, i; | ||
| MusicTimeStamp sequenceLength = 0; | ||
| OSStatus err; | ||
|
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| err = MusicSequenceGetTrackCount(sequence, &ntracks); | ||
| if (err != noErr) | ||
| return err; | ||
|
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| for (i = 0; i < ntracks; ++i) | ||
| { | ||
| MusicTrack track; | ||
| MusicTimeStamp tracklen = 0; | ||
| UInt32 tracklenlen = sizeof (tracklen); | ||
|
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| err = MusicSequenceGetIndTrack(sequence, i, &track); | ||
| if (err != noErr) | ||
| return err; | ||
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| err = MusicTrackGetProperty(track, kSequenceTrackProperty_TrackLength, | ||
| &tracklen, &tracklenlen); | ||
| if (err != noErr) | ||
| return err; | ||
|
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| if (sequenceLength < tracklen) | ||
| sequenceLength = tracklen; | ||
| } | ||
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| *_sequenceLength = sequenceLength; | ||
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| return noErr; | ||
| } | ||
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| int native_midi_detect() | ||
| { | ||
| return 1; /* always available. */ | ||
| } | ||
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| NativeMidiSong *native_midi_loadsong(const char *midifile) | ||
| { | ||
| NativeMidiSong *retval = NULL; | ||
| SDL_RWops *rw = SDL_RWFromFile(midifile, "rb"); | ||
| if (rw != NULL) { | ||
| retval = native_midi_loadsong_RW(rw); | ||
| SDL_RWclose(rw); | ||
| } | ||
|
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| return retval; | ||
| } | ||
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| NativeMidiSong *native_midi_loadsong_RW(SDL_RWops *rw) | ||
| { | ||
| NativeMidiSong *retval = NULL; | ||
| void *buf = NULL; | ||
| int len = 0; | ||
| CFDataRef data = NULL; | ||
|
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| 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; | ||
|
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| buf = malloc(len); | ||
| if (buf == NULL) | ||
| goto fail; | ||
|
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| if (SDL_RWread(rw, buf, len, 1) != 1) | ||
| goto fail; | ||
|
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| retval = malloc(sizeof(NativeMidiSong)); | ||
| if (retval == NULL) | ||
| goto fail; | ||
|
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| memset(retval, '\0', sizeof (*retval)); | ||
|
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| if (NewMusicPlayer(&retval->player) != noErr) | ||
| goto fail; | ||
| if (NewMusicSequence(&retval->sequence) != noErr) | ||
| goto fail; | ||
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| data = CFDataCreate(NULL, (const UInt8 *) buf, len); | ||
| if (data == NULL) | ||
| goto fail; | ||
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| free(buf); | ||
| buf = NULL; | ||
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| #if 1 /* 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 (MusicSequenceLoadData(retval->sequence, data, 0, 0) != noErr) | ||
| goto fail; | ||
| #endif | ||
|
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| CFRelease(data); | ||
| data = NULL; | ||
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| if (GetSequenceLength(retval->sequence, &retval->endTime) != noErr) | ||
| goto fail; | ||
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| if (MusicPlayerSetSequence(retval->player, retval->sequence) != noErr) | ||
| goto fail; | ||
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| return retval; | ||
|
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| fail: | ||
| if (retval) { | ||
| if (retval->sequence) | ||
| DisposeMusicSequence(retval->sequence); | ||
| if (retval->player) | ||
| DisposeMusicPlayer(retval->player); | ||
| free(retval); | ||
| } | ||
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| if (data) | ||
| CFRelease(data); | ||
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| if (buf) | ||
| free(buf); | ||
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| return NULL; | ||
| } | ||
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| void native_midi_freesong(NativeMidiSong *song) | ||
| { | ||
| if (song != NULL) { | ||
| if (currentsong == song) | ||
| currentsong = NULL; | ||
| MusicPlayerStop(song->player); | ||
| DisposeMusicSequence(song->sequence); | ||
| DisposeMusicPlayer(song->player); | ||
| free(song); | ||
| } | ||
| } | ||
|
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| void native_midi_start(NativeMidiSong *song) | ||
| { | ||
| if (song == NULL) | ||
| return; | ||
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| SDL_PauseAudio(1); | ||
| SDL_UnlockAudio(); | ||
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| if (currentsong) | ||
| MusicPlayerStop(currentsong->player); | ||
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| currentsong = song; | ||
| MusicPlayerStart(song->player); | ||
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| SDL_LockAudio(); | ||
| SDL_PauseAudio(0); | ||
| } | ||
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| void native_midi_stop() | ||
| { | ||
| if (currentsong) { | ||
| SDL_PauseAudio(1); | ||
| SDL_UnlockAudio(); | ||
| MusicPlayerStop(currentsong->player); | ||
| currentsong = NULL; | ||
| SDL_LockAudio(); | ||
| SDL_PauseAudio(0); | ||
| } | ||
| } | ||
|
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| int native_midi_active() | ||
| { | ||
| MusicTimeStamp currentTime = 0; | ||
| if (currentsong == NULL) | ||
| return 0; | ||
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| MusicPlayerGetTime(currentsong->player, ¤tTime); | ||
| return ((currentTime < currentsong->endTime) || | ||
| (currentTime >= kMusicTimeStamp_EndOfTrack)); | ||
| } | ||
|
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| void native_midi_setvolume(int volume) | ||
| { | ||
| /* !!! FIXME: call MusicSequenceGetAUGraph(), figure out where the output | ||
| !!! FIXME: audio unit is, and change its gain */ | ||
| } | ||
|
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| const char *native_midi_error(void) | ||
| { | ||
| return ""; /* !!! FIXME */ | ||
| } | ||
|
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| #endif /* Mac OS X native MIDI support */ | ||
|
|