1 /** 2 * \file include/seq_event.h 3 * \brief Application interface library for the ALSA driver 4 * \author Jaroslav Kysela <perex (at) perex.cz> 5 * \author Abramo Bagnara <abramo (at) alsa-project.org> 6 * \author Takashi Iwai <tiwai (at) suse.de> 7 * \date 1998-2001 8 * 9 * Application interface library for the ALSA driver 10 */ 11 /* 12 * This library is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU Lesser General Public License as 14 * published by the Free Software Foundation; either version 2.1 of 15 * the License, or (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU Lesser General Public License for more details. 21 * 22 * You should have received a copy of the GNU Lesser General Public 23 * License along with this library; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25 * 26 */ 27 28 #ifndef __ALSA_SEQ_EVENT_H 29 #define __ALSA_SEQ_EVENT_H 30 31 /** 32 * \defgroup SeqEvents Sequencer Event Definitions 33 * Sequencer Event Definitions 34 * \ingroup Sequencer 35 * \{ 36 */ 37 38 /** 39 * Sequencer event data type 40 */ 41 typedef unsigned char snd_seq_event_type_t; 42 43 /** Sequencer event type */ 44 enum snd_seq_event_type { 45 /** system status; event data type = #snd_seq_result_t */ 46 SND_SEQ_EVENT_SYSTEM = 0, 47 /** returned result status; event data type = #snd_seq_result_t */ 48 SND_SEQ_EVENT_RESULT, 49 50 /** note on and off with duration; event data type = #snd_seq_ev_note_t */ 51 SND_SEQ_EVENT_NOTE = 5, 52 /** note on; event data type = #snd_seq_ev_note_t */ 53 SND_SEQ_EVENT_NOTEON, 54 /** note off; event data type = #snd_seq_ev_note_t */ 55 SND_SEQ_EVENT_NOTEOFF, 56 /** key pressure change (aftertouch); event data type = #snd_seq_ev_note_t */ 57 SND_SEQ_EVENT_KEYPRESS, 58 59 /** controller; event data type = #snd_seq_ev_ctrl_t */ 60 SND_SEQ_EVENT_CONTROLLER = 10, 61 /** program change; event data type = #snd_seq_ev_ctrl_t */ 62 SND_SEQ_EVENT_PGMCHANGE, 63 /** channel pressure; event data type = #snd_seq_ev_ctrl_t */ 64 SND_SEQ_EVENT_CHANPRESS, 65 /** pitchwheel; event data type = #snd_seq_ev_ctrl_t; data is from -8192 to 8191) */ 66 SND_SEQ_EVENT_PITCHBEND, 67 /** 14 bit controller value; event data type = #snd_seq_ev_ctrl_t */ 68 SND_SEQ_EVENT_CONTROL14, 69 /** 14 bit NRPN; event data type = #snd_seq_ev_ctrl_t */ 70 SND_SEQ_EVENT_NONREGPARAM, 71 /** 14 bit RPN; event data type = #snd_seq_ev_ctrl_t */ 72 SND_SEQ_EVENT_REGPARAM, 73 74 /** SPP with LSB and MSB values; event data type = #snd_seq_ev_ctrl_t */ 75 SND_SEQ_EVENT_SONGPOS = 20, 76 /** Song Select with song ID number; event data type = #snd_seq_ev_ctrl_t */ 77 SND_SEQ_EVENT_SONGSEL, 78 /** midi time code quarter frame; event data type = #snd_seq_ev_ctrl_t */ 79 SND_SEQ_EVENT_QFRAME, 80 /** SMF Time Signature event; event data type = #snd_seq_ev_ctrl_t */ 81 SND_SEQ_EVENT_TIMESIGN, 82 /** SMF Key Signature event; event data type = #snd_seq_ev_ctrl_t */ 83 SND_SEQ_EVENT_KEYSIGN, 84 85 /** MIDI Real Time Start message; event data type = #snd_seq_ev_queue_control_t */ 86 SND_SEQ_EVENT_START = 30, 87 /** MIDI Real Time Continue message; event data type = #snd_seq_ev_queue_control_t */ 88 SND_SEQ_EVENT_CONTINUE, 89 /** MIDI Real Time Stop message; event data type = #snd_seq_ev_queue_control_t */ 90 SND_SEQ_EVENT_STOP, 91 /** Set tick queue position; event data type = #snd_seq_ev_queue_control_t */ 92 SND_SEQ_EVENT_SETPOS_TICK, 93 /** Set real-time queue position; event data type = #snd_seq_ev_queue_control_t */ 94 SND_SEQ_EVENT_SETPOS_TIME, 95 /** (SMF) Tempo event; event data type = #snd_seq_ev_queue_control_t */ 96 SND_SEQ_EVENT_TEMPO, 97 /** MIDI Real Time Clock message; event data type = #snd_seq_ev_queue_control_t */ 98 SND_SEQ_EVENT_CLOCK, 99 /** MIDI Real Time Tick message; event data type = #snd_seq_ev_queue_control_t */ 100 SND_SEQ_EVENT_TICK, 101 /** Queue timer skew; event data type = #snd_seq_ev_queue_control_t */ 102 SND_SEQ_EVENT_QUEUE_SKEW, 103 /** Sync position changed; event data type = #snd_seq_ev_queue_control_t */ 104 SND_SEQ_EVENT_SYNC_POS, 105 106 /** Tune request; event data type = none */ 107 SND_SEQ_EVENT_TUNE_REQUEST = 40, 108 /** Reset to power-on state; event data type = none */ 109 SND_SEQ_EVENT_RESET, 110 /** Active sensing event; event data type = none */ 111 SND_SEQ_EVENT_SENSING, 112 113 /** Echo-back event; event data type = any type */ 114 SND_SEQ_EVENT_ECHO = 50, 115 /** OSS emulation raw event; event data type = any type */ 116 SND_SEQ_EVENT_OSS, 117 118 /** New client has connected; event data type = #snd_seq_addr_t */ 119 SND_SEQ_EVENT_CLIENT_START = 60, 120 /** Client has left the system; event data type = #snd_seq_addr_t */ 121 SND_SEQ_EVENT_CLIENT_EXIT, 122 /** Client status/info has changed; event data type = #snd_seq_addr_t */ 123 SND_SEQ_EVENT_CLIENT_CHANGE, 124 /** New port was created; event data type = #snd_seq_addr_t */ 125 SND_SEQ_EVENT_PORT_START, 126 /** Port was deleted from system; event data type = #snd_seq_addr_t */ 127 SND_SEQ_EVENT_PORT_EXIT, 128 /** Port status/info has changed; event data type = #snd_seq_addr_t */ 129 SND_SEQ_EVENT_PORT_CHANGE, 130 131 /** Ports connected; event data type = #snd_seq_connect_t */ 132 SND_SEQ_EVENT_PORT_SUBSCRIBED, 133 /** Ports disconnected; event data type = #snd_seq_connect_t */ 134 SND_SEQ_EVENT_PORT_UNSUBSCRIBED, 135 136 /** user-defined event; event data type = any (fixed size) */ 137 SND_SEQ_EVENT_USR0 = 90, 138 /** user-defined event; event data type = any (fixed size) */ 139 SND_SEQ_EVENT_USR1, 140 /** user-defined event; event data type = any (fixed size) */ 141 SND_SEQ_EVENT_USR2, 142 /** user-defined event; event data type = any (fixed size) */ 143 SND_SEQ_EVENT_USR3, 144 /** user-defined event; event data type = any (fixed size) */ 145 SND_SEQ_EVENT_USR4, 146 /** user-defined event; event data type = any (fixed size) */ 147 SND_SEQ_EVENT_USR5, 148 /** user-defined event; event data type = any (fixed size) */ 149 SND_SEQ_EVENT_USR6, 150 /** user-defined event; event data type = any (fixed size) */ 151 SND_SEQ_EVENT_USR7, 152 /** user-defined event; event data type = any (fixed size) */ 153 SND_SEQ_EVENT_USR8, 154 /** user-defined event; event data type = any (fixed size) */ 155 SND_SEQ_EVENT_USR9, 156 157 /** system exclusive data (variable length); event data type = #snd_seq_ev_ext_t */ 158 SND_SEQ_EVENT_SYSEX = 130, 159 /** error event; event data type = #snd_seq_ev_ext_t */ 160 SND_SEQ_EVENT_BOUNCE, 161 /** reserved for user apps; event data type = #snd_seq_ev_ext_t */ 162 SND_SEQ_EVENT_USR_VAR0 = 135, 163 /** reserved for user apps; event data type = #snd_seq_ev_ext_t */ 164 SND_SEQ_EVENT_USR_VAR1, 165 /** reserved for user apps; event data type = #snd_seq_ev_ext_t */ 166 SND_SEQ_EVENT_USR_VAR2, 167 /** reserved for user apps; event data type = #snd_seq_ev_ext_t */ 168 SND_SEQ_EVENT_USR_VAR3, 169 /** reserved for user apps; event data type = #snd_seq_ev_ext_t */ 170 SND_SEQ_EVENT_USR_VAR4, 171 172 /** NOP; ignored in any case */ 173 SND_SEQ_EVENT_NONE = 255 174 }; 175 176 177 /** Sequencer event address */ 178 typedef struct snd_seq_addr { 179 unsigned char client; /**< Client id */ 180 unsigned char port; /**< Port id */ 181 } snd_seq_addr_t; 182 183 /** Connection (subscription) between ports */ 184 typedef struct snd_seq_connect { 185 snd_seq_addr_t sender; /**< sender address */ 186 snd_seq_addr_t dest; /**< destination address */ 187 } snd_seq_connect_t; 188 189 190 /** Real-time data record */ 191 typedef struct snd_seq_real_time { 192 unsigned int tv_sec; /**< seconds */ 193 unsigned int tv_nsec; /**< nanoseconds */ 194 } snd_seq_real_time_t; 195 196 /** (MIDI) Tick-time data record */ 197 typedef unsigned int snd_seq_tick_time_t; 198 199 /** unioned time stamp */ 200 typedef union snd_seq_timestamp { 201 snd_seq_tick_time_t tick; /**< tick-time */ 202 struct snd_seq_real_time time; /**< real-time */ 203 } snd_seq_timestamp_t; 204 205 206 /** 207 * Event mode flags 208 * 209 * NOTE: only 8 bits available! 210 */ 211 #define SND_SEQ_TIME_STAMP_TICK (0<<0) /**< timestamp in clock ticks */ 212 #define SND_SEQ_TIME_STAMP_REAL (1<<0) /**< timestamp in real time */ 213 #define SND_SEQ_TIME_STAMP_MASK (1<<0) /**< mask for timestamp bits */ 214 215 #define SND_SEQ_TIME_MODE_ABS (0<<1) /**< absolute timestamp */ 216 #define SND_SEQ_TIME_MODE_REL (1<<1) /**< relative to current time */ 217 #define SND_SEQ_TIME_MODE_MASK (1<<1) /**< mask for time mode bits */ 218 219 #define SND_SEQ_EVENT_LENGTH_FIXED (0<<2) /**< fixed event size */ 220 #define SND_SEQ_EVENT_LENGTH_VARIABLE (1<<2) /**< variable event size */ 221 #define SND_SEQ_EVENT_LENGTH_VARUSR (2<<2) /**< variable event size - user memory space */ 222 #define SND_SEQ_EVENT_LENGTH_MASK (3<<2) /**< mask for event length bits */ 223 224 #define SND_SEQ_PRIORITY_NORMAL (0<<4) /**< normal priority */ 225 #define SND_SEQ_PRIORITY_HIGH (1<<4) /**< event should be processed before others */ 226 #define SND_SEQ_PRIORITY_MASK (1<<4) /**< mask for priority bits */ 227 228 229 /** Note event */ 230 typedef struct snd_seq_ev_note { 231 unsigned char channel; /**< channel number */ 232 unsigned char note; /**< note */ 233 unsigned char velocity; /**< velocity */ 234 unsigned char off_velocity; /**< note-off velocity; only for #SND_SEQ_EVENT_NOTE */ 235 unsigned int duration; /**< duration until note-off; only for #SND_SEQ_EVENT_NOTE */ 236 } snd_seq_ev_note_t; 237 238 /** Controller event */ 239 typedef struct snd_seq_ev_ctrl { 240 unsigned char channel; /**< channel number */ 241 unsigned char unused[3]; /**< reserved */ 242 unsigned int param; /**< control parameter */ 243 signed int value; /**< control value */ 244 } snd_seq_ev_ctrl_t; 245 246 /** generic set of bytes (12x8 bit) */ 247 typedef struct snd_seq_ev_raw8 { 248 unsigned char d[12]; /**< 8 bit value */ 249 } snd_seq_ev_raw8_t; 250 251 /** generic set of integers (3x32 bit) */ 252 typedef struct snd_seq_ev_raw32 { 253 unsigned int d[3]; /**< 32 bit value */ 254 } snd_seq_ev_raw32_t; 255 256 /** external stored data */ 257 typedef struct snd_seq_ev_ext { 258 unsigned int len; /**< length of data */ 259 void *ptr; /**< pointer to data (note: can be 64-bit) */ 260 } __attribute__((packed)) snd_seq_ev_ext_t; 261 262 /** Result events */ 263 typedef struct snd_seq_result { 264 int event; /**< processed event type */ 265 int result; /**< status */ 266 } snd_seq_result_t; 267 268 /** Queue skew values */ 269 typedef struct snd_seq_queue_skew { 270 unsigned int value; /**< skew value */ 271 unsigned int base; /**< skew base */ 272 } snd_seq_queue_skew_t; 273 274 /** queue timer control */ 275 typedef struct snd_seq_ev_queue_control { 276 unsigned char queue; /**< affected queue */ 277 unsigned char unused[3]; /**< reserved */ 278 union { 279 signed int value; /**< affected value (e.g. tempo) */ 280 snd_seq_timestamp_t time; /**< time */ 281 unsigned int position; /**< sync position */ 282 snd_seq_queue_skew_t skew; /**< queue skew */ 283 unsigned int d32[2]; /**< any data */ 284 unsigned char d8[8]; /**< any data */ 285 } param; /**< data value union */ 286 } snd_seq_ev_queue_control_t; 287 288 289 /** Sequencer event */ 290 typedef struct snd_seq_event { 291 snd_seq_event_type_t type; /**< event type */ 292 unsigned char flags; /**< event flags */ 293 unsigned char tag; /**< tag */ 294 295 unsigned char queue; /**< schedule queue */ 296 snd_seq_timestamp_t time; /**< schedule time */ 297 298 snd_seq_addr_t source; /**< source address */ 299 snd_seq_addr_t dest; /**< destination address */ 300 301 union { 302 snd_seq_ev_note_t note; /**< note information */ 303 snd_seq_ev_ctrl_t control; /**< MIDI control information */ 304 snd_seq_ev_raw8_t raw8; /**< raw8 data */ 305 snd_seq_ev_raw32_t raw32; /**< raw32 data */ 306 snd_seq_ev_ext_t ext; /**< external data */ 307 snd_seq_ev_queue_control_t queue; /**< queue control */ 308 snd_seq_timestamp_t time; /**< timestamp */ 309 snd_seq_addr_t addr; /**< address */ 310 snd_seq_connect_t connect; /**< connect information */ 311 snd_seq_result_t result; /**< operation result code */ 312 } data; /**< event data... */ 313 } snd_seq_event_t; 314 315 316 /** \} */ 317 318 #endif /* __ALSA_SEQ_EVENT_H */ 319 320
