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native_midi
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native_midi_common.h

native_midi_common.h 2.2 KB
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  1. /*
    2. 

  2.     native_midi:  Hardware Midi support for the SDL_mixer library
    3. 

  3.     Copyright (C) 2000,2001  Florian 'Proff' Schulze & Max Horn
    4. 

  4. 

  5.     This library is free software; you can redistribute it and/or
    6. 

  6.     modify it under the terms of the GNU Library General Public
    7. 

  7.     License as published by the Free Software Foundation; either
    8. 

  8.     version 2 of the License, or (at your option) any later version.
    9. 

  9. 

  10.     This library is distributed in the hope that it will be useful,
    11. 

  11.     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12. 

  12.     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13. 

  13.     Library General Public License for more details.
    14. 

  14. 

  15.     You should have received a copy of the GNU Library General Public
    16. 

  16.     License along with this library; if not, write to the Free
    17. 

  17.     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    18. 

  18. 

  19.     Florian 'Proff' Schulze
    20. 

  20.     florian.proff.schulze@gmx.net
    21. 

  21. 

  22.     Max Horn
    23. 

  23.     max@quendi.de
    24. 

  24. */
    25. 

  25. 

  26. #ifndef _NATIVE_MIDI_COMMON_H_
    27. 

  27. #define _NATIVE_MIDI_COMMON_H_
    28. 

  28. 

  29. #include "SDL.h"
    30. 

  30. 

  31. /* Midi Status Bytes */
    32. 

  32. #define MIDI_STATUS_NOTE_OFF	0x8
    33. 

  33. #define MIDI_STATUS_NOTE_ON	0x9
    34. 

  34. #define MIDI_STATUS_AFTERTOUCH	0xA
    35. 

  35. #define MIDI_STATUS_CONTROLLER	0xB
    36. 

  36. #define MIDI_STATUS_PROG_CHANGE	0xC
    37. 

  37. #define MIDI_STATUS_PRESSURE	0xD
    38. 

  38. #define MIDI_STATUS_PITCH_WHEEL	0xE
    39. 

  39. #define MIDI_STATUS_SYSEX	0xF
    40. 

  40. 

  41. /* We store the midi events in a linked list; this way it is
    42. 

  42.    easy to shuffle the tracks together later on; and we are
    43. 

  43.    flexible in the size of each elemnt.
    44. 

  44.  */
    45. 

  45. typedef struct MIDIEvent
    46. 

  46. {
    47. 

  47. 	Uint32	time;		/* Time at which this midi events occurs */
    48. 

  48. 	Uint8	status;		/* Status byte */
    49. 

  49. 	Uint8	data[2];	/* 1 or 2 bytes additional data for most events */
    50. 

  50. 

  51. 	Uint32	extraLen;	/* For some SysEx events, we need additional storage */
    52. 

  52. 	Uint8	*extraData;
    53. 

  53. 	
    54. 

  54. 	struct MIDIEvent *next;
    55. 

  55. } MIDIEvent;
    56. 

  56. 

  57. #ifdef __cplusplus
    58. 

  58. extern "C"
    59. 

  59. {
    60. 

  60. #endif
    61. 

  61. 

  62. /* Load a midifile to memory, converting it to a list of MIDIEvents.
    63. 

  63.    This function returns a linked lists of MIDIEvents, 0 if an error occured.
    64. 

  64.  */ 
    65. 

  65. MIDIEvent *CreateMIDIEventList(SDL_RWops *rw, Uint16 *division);
    66. 

  66. 

  67. /* Release a MIDIEvent list after usage. */
    68. 

  68. void FreeMIDIEventList(MIDIEvent *head);
    69. 

  69. 

  70. #ifdef __cplusplus
    71. 

  71. }
    72. 

  72. #endif
    73. 

  73. 

  74. #endif /* _NATIVE_MIDI_COMMON_H_ */
    75.