/** * \file include/seq_event.h * \brief Application interface library for the ALSA driver * \author Jaroslav Kysela * \author Abramo Bagnara * \author Takashi Iwai * \date 1998-2001 * * Application interface library for the ALSA driver */ /* * This library is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This program 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * */ #ifndef __ALSA_SEQ_EVENT_H #define __ALSA_SEQ_EVENT_H /** * \defgroup SeqEvents Sequencer Event Definitions * Sequencer Event Definitions * \ingroup Sequencer * \{ */ /** * Sequencer event data type */ typedef unsigned char snd_seq_event_type_t; /** Sequencer event type */ enum snd_seq_event_type { /** system status; event data type = #snd_seq_result_t */ SND_SEQ_EVENT_SYSTEM = 0, /** returned result status; event data type = #snd_seq_result_t */ SND_SEQ_EVENT_RESULT, /** note on and off with duration; event data type = #snd_seq_ev_note_t */ SND_SEQ_EVENT_NOTE = 5, /** note on; event data type = #snd_seq_ev_note_t */ SND_SEQ_EVENT_NOTEON, /** note off; event data type = #snd_seq_ev_note_t */ SND_SEQ_EVENT_NOTEOFF, /** key pressure change (aftertouch); event data type = #snd_seq_ev_note_t */ SND_SEQ_EVENT_KEYPRESS, /** controller; event data type = #snd_seq_ev_ctrl_t */ SND_SEQ_EVENT_CONTROLLER = 10, /** program change; event data type = #snd_seq_ev_ctrl_t */ SND_SEQ_EVENT_PGMCHANGE, /** channel pressure; event data type = #snd_seq_ev_ctrl_t */ SND_SEQ_EVENT_CHANPRESS, /** pitchwheel; event data type = #snd_seq_ev_ctrl_t; data is from -8192 to 8191) */ SND_SEQ_EVENT_PITCHBEND, /** 14 bit controller value; event data type = #snd_seq_ev_ctrl_t */ SND_SEQ_EVENT_CONTROL14, /** 14 bit NRPN; event data type = #snd_seq_ev_ctrl_t */ SND_SEQ_EVENT_NONREGPARAM, /** 14 bit RPN; event data type = #snd_seq_ev_ctrl_t */ SND_SEQ_EVENT_REGPARAM, /** SPP with LSB and MSB values; event data type = #snd_seq_ev_ctrl_t */ SND_SEQ_EVENT_SONGPOS = 20, /** Song Select with song ID number; event data type = #snd_seq_ev_ctrl_t */ SND_SEQ_EVENT_SONGSEL, /** midi time code quarter frame; event data type = #snd_seq_ev_ctrl_t */ SND_SEQ_EVENT_QFRAME, /** SMF Time Signature event; event data type = #snd_seq_ev_ctrl_t */ SND_SEQ_EVENT_TIMESIGN, /** SMF Key Signature event; event data type = #snd_seq_ev_ctrl_t */ SND_SEQ_EVENT_KEYSIGN, /** MIDI Real Time Start message; event data type = #snd_seq_ev_queue_control_t */ SND_SEQ_EVENT_START = 30, /** MIDI Real Time Continue message; event data type = #snd_seq_ev_queue_control_t */ SND_SEQ_EVENT_CONTINUE, /** MIDI Real Time Stop message; event data type = #snd_seq_ev_queue_control_t */ SND_SEQ_EVENT_STOP, /** Set tick queue position; event data type = #snd_seq_ev_queue_control_t */ SND_SEQ_EVENT_SETPOS_TICK, /** Set real-time queue position; event data type = #snd_seq_ev_queue_control_t */ SND_SEQ_EVENT_SETPOS_TIME, /** (SMF) Tempo event; event data type = #snd_seq_ev_queue_control_t */ SND_SEQ_EVENT_TEMPO, /** MIDI Real Time Clock message; event data type = #snd_seq_ev_queue_control_t */ SND_SEQ_EVENT_CLOCK, /** MIDI Real Time Tick message; event data type = #snd_seq_ev_queue_control_t */ SND_SEQ_EVENT_TICK, /** Queue timer skew; event data type = #snd_seq_ev_queue_control_t */ SND_SEQ_EVENT_QUEUE_SKEW, /** Sync position changed; event data type = #snd_seq_ev_queue_control_t */ SND_SEQ_EVENT_SYNC_POS, /** Tune request; event data type = none */ SND_SEQ_EVENT_TUNE_REQUEST = 40, /** Reset to power-on state; event data type = none */ SND_SEQ_EVENT_RESET, /** Active sensing event; event data type = none */ SND_SEQ_EVENT_SENSING, /** Echo-back event; event data type = any type */ SND_SEQ_EVENT_ECHO = 50, /** OSS emulation raw event; event data type = any type */ SND_SEQ_EVENT_OSS, /** New client has connected; event data type = #snd_seq_addr_t */ SND_SEQ_EVENT_CLIENT_START = 60, /** Client has left the system; event data type = #snd_seq_addr_t */ SND_SEQ_EVENT_CLIENT_EXIT, /** Client status/info has changed; event data type = #snd_seq_addr_t */ SND_SEQ_EVENT_CLIENT_CHANGE, /** New port was created; event data type = #snd_seq_addr_t */ SND_SEQ_EVENT_PORT_START, /** Port was deleted from system; event data type = #snd_seq_addr_t */ SND_SEQ_EVENT_PORT_EXIT, /** Port status/info has changed; event data type = #snd_seq_addr_t */ SND_SEQ_EVENT_PORT_CHANGE, /** Ports connected; event data type = #snd_seq_connect_t */ SND_SEQ_EVENT_PORT_SUBSCRIBED, /** Ports disconnected; event data type = #snd_seq_connect_t */ SND_SEQ_EVENT_PORT_UNSUBSCRIBED, /** user-defined event; event data type = any (fixed size) */ SND_SEQ_EVENT_USR0 = 90, /** user-defined event; event data type = any (fixed size) */ SND_SEQ_EVENT_USR1, /** user-defined event; event data type = any (fixed size) */ SND_SEQ_EVENT_USR2, /** user-defined event; event data type = any (fixed size) */ SND_SEQ_EVENT_USR3, /** user-defined event; event data type = any (fixed size) */ SND_SEQ_EVENT_USR4, /** user-defined event; event data type = any (fixed size) */ SND_SEQ_EVENT_USR5, /** user-defined event; event data type = any (fixed size) */ SND_SEQ_EVENT_USR6, /** user-defined event; event data type = any (fixed size) */ SND_SEQ_EVENT_USR7, /** user-defined event; event data type = any (fixed size) */ SND_SEQ_EVENT_USR8, /** user-defined event; event data type = any (fixed size) */ SND_SEQ_EVENT_USR9, /** system exclusive data (variable length); event data type = #snd_seq_ev_ext_t */ SND_SEQ_EVENT_SYSEX = 130, /** error event; event data type = #snd_seq_ev_ext_t */ SND_SEQ_EVENT_BOUNCE, /** reserved for user apps; event data type = #snd_seq_ev_ext_t */ SND_SEQ_EVENT_USR_VAR0 = 135, /** reserved for user apps; event data type = #snd_seq_ev_ext_t */ SND_SEQ_EVENT_USR_VAR1, /** reserved for user apps; event data type = #snd_seq_ev_ext_t */ SND_SEQ_EVENT_USR_VAR2, /** reserved for user apps; event data type = #snd_seq_ev_ext_t */ SND_SEQ_EVENT_USR_VAR3, /** reserved for user apps; event data type = #snd_seq_ev_ext_t */ SND_SEQ_EVENT_USR_VAR4, /** NOP; ignored in any case */ SND_SEQ_EVENT_NONE = 255 }; /** Sequencer event address */ typedef struct snd_seq_addr { unsigned char client; /**< Client id */ unsigned char port; /**< Port id */ } snd_seq_addr_t; /** Connection (subscription) between ports */ typedef struct snd_seq_connect { snd_seq_addr_t sender; /**< sender address */ snd_seq_addr_t dest; /**< destination address */ } snd_seq_connect_t; /** Real-time data record */ typedef struct snd_seq_real_time { unsigned int tv_sec; /**< seconds */ unsigned int tv_nsec; /**< nanoseconds */ } snd_seq_real_time_t; /** (MIDI) Tick-time data record */ typedef unsigned int snd_seq_tick_time_t; /** unioned time stamp */ typedef union snd_seq_timestamp { snd_seq_tick_time_t tick; /**< tick-time */ struct snd_seq_real_time time; /**< real-time */ } snd_seq_timestamp_t; /** * Event mode flags * * NOTE: only 8 bits available! */ #define SND_SEQ_TIME_STAMP_TICK (0<<0) /**< timestamp in clock ticks */ #define SND_SEQ_TIME_STAMP_REAL (1<<0) /**< timestamp in real time */ #define SND_SEQ_TIME_STAMP_MASK (1<<0) /**< mask for timestamp bits */ #define SND_SEQ_TIME_MODE_ABS (0<<1) /**< absolute timestamp */ #define SND_SEQ_TIME_MODE_REL (1<<1) /**< relative to current time */ #define SND_SEQ_TIME_MODE_MASK (1<<1) /**< mask for time mode bits */ #define SND_SEQ_EVENT_LENGTH_FIXED (0<<2) /**< fixed event size */ #define SND_SEQ_EVENT_LENGTH_VARIABLE (1<<2) /**< variable event size */ #define SND_SEQ_EVENT_LENGTH_VARUSR (2<<2) /**< variable event size - user memory space */ #define SND_SEQ_EVENT_LENGTH_MASK (3<<2) /**< mask for event length bits */ #define SND_SEQ_PRIORITY_NORMAL (0<<4) /**< normal priority */ #define SND_SEQ_PRIORITY_HIGH (1<<4) /**< event should be processed before others */ #define SND_SEQ_PRIORITY_MASK (1<<4) /**< mask for priority bits */ /** Note event */ typedef struct snd_seq_ev_note { unsigned char channel; /**< channel number */ unsigned char note; /**< note */ unsigned char velocity; /**< velocity */ unsigned char off_velocity; /**< note-off velocity; only for #SND_SEQ_EVENT_NOTE */ unsigned int duration; /**< duration until note-off; only for #SND_SEQ_EVENT_NOTE */ } snd_seq_ev_note_t; /** Controller event */ typedef struct snd_seq_ev_ctrl { unsigned char channel; /**< channel number */ unsigned char unused[3]; /**< reserved */ unsigned int param; /**< control parameter */ signed int value; /**< control value */ } snd_seq_ev_ctrl_t; /** generic set of bytes (12x8 bit) */ typedef struct snd_seq_ev_raw8 { unsigned char d[12]; /**< 8 bit value */ } snd_seq_ev_raw8_t; /** generic set of integers (3x32 bit) */ typedef struct snd_seq_ev_raw32 { unsigned int d[3]; /**< 32 bit value */ } snd_seq_ev_raw32_t; /** external stored data */ struct snd_seq_ev_ext { unsigned int len; /**< length of data */ void *ptr; /**< pointer to data (note: can be 64-bit) */ } __attribute__((packed)); /** external stored data */ typedef struct snd_seq_ev_ext snd_seq_ev_ext_t; #ifdef DOC_HIDDEN /* redefine typedef for stupid doxygen */ typedef snd_seq_ev_ext snd_seq_ev_ext_t; #endif /** Result events */ typedef struct snd_seq_result { int event; /**< processed event type */ int result; /**< status */ } snd_seq_result_t; /** Queue skew values */ typedef struct snd_seq_queue_skew { unsigned int value; /**< skew value */ unsigned int base; /**< skew base */ } snd_seq_queue_skew_t; /** queue timer control */ typedef struct snd_seq_ev_queue_control { unsigned char queue; /**< affected queue */ unsigned char unused[3]; /**< reserved */ union { signed int value; /**< affected value (e.g. tempo) */ snd_seq_timestamp_t time; /**< time */ unsigned int position; /**< sync position */ snd_seq_queue_skew_t skew; /**< queue skew */ unsigned int d32[2]; /**< any data */ unsigned char d8[8]; /**< any data */ } param; /**< data value union */ } snd_seq_ev_queue_control_t; /** Sequencer event */ typedef struct snd_seq_event { snd_seq_event_type_t type; /**< event type */ unsigned char flags; /**< event flags */ unsigned char tag; /**< tag */ unsigned char queue; /**< schedule queue */ snd_seq_timestamp_t time; /**< schedule time */ snd_seq_addr_t source; /**< source address */ snd_seq_addr_t dest; /**< destination address */ union { snd_seq_ev_note_t note; /**< note information */ snd_seq_ev_ctrl_t control; /**< MIDI control information */ snd_seq_ev_raw8_t raw8; /**< raw8 data */ snd_seq_ev_raw32_t raw32; /**< raw32 data */ snd_seq_ev_ext_t ext; /**< external data */ snd_seq_ev_queue_control_t queue; /**< queue control */ snd_seq_timestamp_t time; /**< timestamp */ snd_seq_addr_t addr; /**< address */ snd_seq_connect_t connect; /**< connect information */ snd_seq_result_t result; /**< operation result code */ } data; /**< event data... */ } snd_seq_event_t; /** \} */ #endif /* __ALSA_SEQ_EVENT_H */