diff options
Diffstat (limited to 'sys/pc98/pc98/sound/sequencer.c')
| -rw-r--r-- | sys/pc98/pc98/sound/sequencer.c | 1992 |
1 files changed, 0 insertions, 1992 deletions
diff --git a/sys/pc98/pc98/sound/sequencer.c b/sys/pc98/pc98/sound/sequencer.c deleted file mode 100644 index 30da4c644bb6..000000000000 --- a/sys/pc98/pc98/sound/sequencer.c +++ /dev/null @@ -1,1992 +0,0 @@ -/* - * sound/sequencer.c - * - * The sequencer personality manager. - * - * Copyright by Hannu Savolainen 1993 - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. 2. - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR - * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER - * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - */ - -#define SEQUENCER_C -#ifdef PC98 -#include <pc98/pc98/sound/sound_config.h> -#else -#include <i386/isa/sound/sound_config.h> -#endif -#include <i386/isa/sound/midi_ctrl.h> - -extern void seq_drain_midi_queues __P((void)); - -#ifdef CONFIGURE_SOUNDCARD - -#ifndef EXCLUDE_SEQUENCER - -static int sequencer_ok = 0; -static struct sound_timer_operations *tmr; -static int tmr_no = -1; /* Currently selected timer */ -static int pending_timer = -1; /* For timer change operation */ - -/* - * Local counts for number of synth and MIDI devices. These are initialized - * by the sequencer_open. - */ -static int max_mididev = 0; -static int max_synthdev = 0; - -/* - * The seq_mode gives the operating mode of the sequencer: - * 1 = level1 (the default) - * 2 = level2 (extended capabilites) - */ - -#define SEQ_1 1 -#define SEQ_2 2 -static int seq_mode = SEQ_1; - -DEFINE_WAIT_QUEUE (seq_sleeper, seq_sleep_flag); -DEFINE_WAIT_QUEUE (midi_sleeper, midi_sleep_flag); - -static int midi_opened[MAX_MIDI_DEV] = -{0}; -static int midi_written[MAX_MIDI_DEV] = -{0}; - -static unsigned long prev_input_time = 0; -static int prev_event_time; -static unsigned long seq_time = 0; - -#include <i386/isa/sound/tuning.h> - -#define EV_SZ 8 -#define IEV_SZ 8 -static unsigned char *queue = NULL; -static unsigned char *iqueue = NULL; - -static volatile int qhead = 0, qtail = 0, qlen = 0; -static volatile int iqhead = 0, iqtail = 0, iqlen = 0; -static volatile int seq_playing = 0; -static int sequencer_busy = 0; -static int output_treshold; -static int pre_event_timeout; -static unsigned synth_open_mask; - -static int seq_queue (unsigned char *note, char nonblock); -static void seq_startplay (void); -static int seq_sync (void); -static void seq_reset (void); -static int pmgr_present[MAX_SYNTH_DEV] = -{0}; - -#if MAX_SYNTH_DEV > 15 -#error Too many synthesizer devices enabled. -#endif - -int -sequencer_read (int dev, struct fileinfo *file, snd_rw_buf * buf, int count) -{ - int c = count, p = 0; - int ev_len; - unsigned long flags; - - dev = dev >> 4; - - ev_len = seq_mode == SEQ_1 ? 4 : 8; - - if (dev) /* - * Patch manager device - */ - return pmgr_read (dev - 1, file, buf, count); - - DISABLE_INTR (flags); - if (!iqlen) - { - if (ISSET_FILE_FLAG (file, O_NONBLOCK)) - { - RESTORE_INTR (flags); - return RET_ERROR (EAGAIN); - } - - DO_SLEEP (midi_sleeper, midi_sleep_flag, pre_event_timeout); - - if (!iqlen) - { - RESTORE_INTR (flags); - return 0; - } - } - - while (iqlen && c >= ev_len) - { - - COPY_TO_USER (buf, p, &iqueue[iqhead * IEV_SZ], ev_len); - p += ev_len; - c -= ev_len; - - iqhead = (iqhead + 1) % SEQ_MAX_QUEUE; - iqlen--; - } - RESTORE_INTR (flags); - - return count - c; -} - -static void -sequencer_midi_output (int dev) -{ - /* - * Currently NOP - */ -} - -void -seq_copy_to_input (unsigned char *event, int len) -{ - unsigned long flags; - - /* - * Verify that the len is valid for the current mode. - */ - - if (len != 4 && len != 8) - return; - if ((seq_mode == SEQ_1) != (len == 4)) - return; - - if (iqlen >= (SEQ_MAX_QUEUE - 1)) - return; /* Overflow */ - - DISABLE_INTR (flags); - memcpy (&iqueue[iqtail * IEV_SZ], event, len); - iqlen++; - iqtail = (iqtail + 1) % SEQ_MAX_QUEUE; - - if (SOMEONE_WAITING (midi_sleeper, midi_sleep_flag)) - { - WAKE_UP (midi_sleeper, midi_sleep_flag); - } - RESTORE_INTR (flags); -#if defined(__FreeBSD__) - if (selinfo[0].si_pid) - selwakeup(&selinfo[0]); -#endif -} - -static void -sequencer_midi_input (int dev, unsigned char data) -{ - unsigned int tstamp; - unsigned char event[4]; - - if (data == 0xfe) /* Ignore active sensing */ - return; - - tstamp = GET_TIME () - seq_time; - if (tstamp != prev_input_time) - { - tstamp = (tstamp << 8) | SEQ_WAIT; - - seq_copy_to_input ((unsigned char *) &tstamp, 4); - prev_input_time = tstamp; - } - - event[0] = SEQ_MIDIPUTC; - event[1] = data; - event[2] = dev; - event[3] = 0; - - seq_copy_to_input (event, 4); -} - -void -seq_input_event (unsigned char *event, int len) -{ - unsigned long this_time; - - if (seq_mode == SEQ_2) - this_time = tmr->get_time (tmr_no); - else - this_time = GET_TIME () - seq_time; - - if (this_time != prev_input_time) - { - unsigned char tmp_event[8]; - - tmp_event[0] = EV_TIMING; - tmp_event[1] = TMR_WAIT_ABS; - tmp_event[2] = 0; - tmp_event[3] = 0; - *(unsigned long *) &tmp_event[4] = this_time; - - seq_copy_to_input (tmp_event, 8); - prev_input_time = this_time; - } - - seq_copy_to_input (event, len); -} - -int -sequencer_write (int dev, struct fileinfo *file, snd_rw_buf * buf, int count) -{ - unsigned char event[EV_SZ], ev_code; - int p = 0, c, ev_size; - int err; - int mode = file->mode & O_ACCMODE; - - dev = dev >> 4; - - DEB (printk ("sequencer_write(dev=%d, count=%d)\n", dev, count)); - - if (mode == OPEN_READ) - return RET_ERROR (EIO); - - if (dev) /* - * Patch manager device - */ - return pmgr_write (dev - 1, file, buf, count); - - c = count; - - while (c >= 4) - { - COPY_FROM_USER (event, buf, p, 4); - ev_code = event[0]; - - if (ev_code == SEQ_FULLSIZE) - { - int err; - - dev = *(unsigned short *) &event[2]; - if (dev < 0 || dev >= max_synthdev) - return RET_ERROR (ENXIO); - - if (!(synth_open_mask & (1 << dev))) - return RET_ERROR (ENXIO); - - err = synth_devs[dev]->load_patch (dev, *(short *) &event[0], buf, p + 4, c, 0); - if (err < 0) - return err; - - return err; - } - - if (ev_code >= 128) - { - if (seq_mode == SEQ_2 && ev_code == SEQ_EXTENDED) - { - printk ("Sequencer: Invalid level 2 event %x\n", ev_code); - return RET_ERROR (EINVAL); - } - - ev_size = 8; - - if (c < ev_size) - { - if (!seq_playing) - seq_startplay (); - return count - c; - } - - COPY_FROM_USER (&event[4], buf, p + 4, 4); - - } - else - { - if (seq_mode == SEQ_2) - { - printk ("Sequencer: 4 byte event in level 2 mode\n"); - return RET_ERROR (EINVAL); - } - ev_size = 4; - } - - if (event[0] == SEQ_MIDIPUTC) - { - - if (!midi_opened[event[2]]) - { - int mode; - int dev = event[2]; - - if (dev >= max_mididev) - { - printk ("Sequencer Error: Nonexistent MIDI device %d\n", dev); - return RET_ERROR (ENXIO); - } - - mode = file->mode & O_ACCMODE; - - if ((err = midi_devs[dev]->open (dev, mode, - sequencer_midi_input, sequencer_midi_output)) < 0) - { - seq_reset (); - printk ("Sequencer Error: Unable to open Midi #%d\n", dev); - return err; - } - - midi_opened[dev] = 1; - } - - } - - if (!seq_queue (event, ISSET_FILE_FLAG (file, O_NONBLOCK))) - { - int processed = count - c; - - if (!seq_playing) - seq_startplay (); - - if (!processed && ISSET_FILE_FLAG (file, O_NONBLOCK)) - return RET_ERROR (EAGAIN); - else - return processed; - } - - p += ev_size; - c -= ev_size; - } - - if (!seq_playing) - seq_startplay (); - - return count; /* This will "eat" chunks shorter than 4 bytes (if written - * alone) Should we really do that ? - */ -} - -static int -seq_queue (unsigned char *note, char nonblock) -{ - - /* - * Test if there is space in the queue - */ - - if (qlen >= SEQ_MAX_QUEUE) - if (!seq_playing) - seq_startplay (); /* - * Give chance to drain the queue - */ - - if (!nonblock && qlen >= SEQ_MAX_QUEUE && !SOMEONE_WAITING (seq_sleeper, seq_sleep_flag)) - { - /* - * Sleep until there is enough space on the queue - */ - DO_SLEEP (seq_sleeper, seq_sleep_flag, 0); - } - - if (qlen >= SEQ_MAX_QUEUE) - { - return 0; /* - * To be sure - */ - } - memcpy (&queue[qtail * EV_SZ], note, EV_SZ); - - qtail = (qtail + 1) % SEQ_MAX_QUEUE; - qlen++; - - return 1; -} - -static int -extended_event (unsigned char *q) -{ - int dev = q[2]; - - if (dev < 0 || dev >= max_synthdev) - return RET_ERROR (ENXIO); - - if (!(synth_open_mask & (1 << dev))) - return RET_ERROR (ENXIO); - - switch (q[1]) - { - case SEQ_NOTEOFF: - synth_devs[dev]->kill_note (dev, q[3], q[4], q[5]); - break; - - case SEQ_NOTEON: - if (q[4] > 127 && q[4] != 255) - return 0; - - synth_devs[dev]->start_note (dev, q[3], q[4], q[5]); - break; - - case SEQ_PGMCHANGE: - synth_devs[dev]->set_instr (dev, q[3], q[4]); - break; - - case SEQ_AFTERTOUCH: - synth_devs[dev]->aftertouch (dev, q[3], q[4]); - break; - - case SEQ_BALANCE: - synth_devs[dev]->panning (dev, q[3], (char) q[4]); - break; - - case SEQ_CONTROLLER: - synth_devs[dev]->controller (dev, q[3], q[4], *(short *) &q[5]); - break; - - case SEQ_VOLMODE: - if (synth_devs[dev]->volume_method != NULL) - synth_devs[dev]->volume_method (dev, q[3]); - break; - - default: - return RET_ERROR (EINVAL); - } - - return 0; -} - -static int -find_voice (int dev, int chn, int note) -{ - unsigned short key; - int i; - - key = (chn << 8) | (note + 1); - - for (i = 0; i < synth_devs[dev]->alloc.max_voice; i++) - if (synth_devs[dev]->alloc.map[i] == key) - return i; - - return -1; -} - -static int -alloc_voice (int dev, int chn, int note) -{ - unsigned short key; - int voice; - - key = (chn << 8) | (note + 1); - - voice = synth_devs[dev]->alloc_voice (dev, chn, note, - &synth_devs[dev]->alloc); - synth_devs[dev]->alloc.map[voice] = key; - synth_devs[dev]->alloc.alloc_times[voice] = - synth_devs[dev]->alloc.timestamp++; - return voice; -} - -static void -seq_chn_voice_event (unsigned char *event) -{ - unsigned char dev = event[1]; - unsigned char cmd = event[2]; - unsigned char chn = event[3]; - unsigned char note = event[4]; - unsigned char parm = event[5]; - int voice = -1; - - if ((int) dev > max_synthdev) - return; - if (!(synth_open_mask & (1 << dev))) - return; - if (!synth_devs[dev]) - return; - - if (seq_mode == SEQ_2) - { - if (synth_devs[dev]->alloc_voice) - voice = find_voice (dev, chn, note); - - if (cmd == MIDI_NOTEON && parm == 0) - { - cmd = MIDI_NOTEOFF; - parm = 64; - } - } - - switch (cmd) - { - case MIDI_NOTEON: - if (note > 127 && note != 255) /* Not a seq2 feature */ - return; - - if (voice == -1 && seq_mode == SEQ_2 && synth_devs[dev]->alloc_voice) - { /* Internal synthesizer (FM, GUS, etc) */ - voice = alloc_voice (dev, chn, note); - } - - if (voice == -1) - voice = chn; - - if (seq_mode == SEQ_2 && dev < num_synths) - { - /* - * The MIDI channel 10 is a percussive channel. Use the note - * number to select the proper patch (128 to 255) to play. - */ - - if (chn == 9) - { - synth_devs[dev]->set_instr (dev, voice, 128 + note); - note = 60; /* Middle C */ - - } - } - - if (seq_mode == SEQ_2) - { - synth_devs[dev]->setup_voice (dev, voice, chn); - } - - synth_devs[dev]->start_note (dev, voice, note, parm); - break; - - case MIDI_NOTEOFF: - if (voice == -1) - voice = chn; - synth_devs[dev]->kill_note (dev, voice, note, parm); - break; - - case MIDI_KEY_PRESSURE: - if (voice == -1) - voice = chn; - synth_devs[dev]->aftertouch (dev, voice, parm); - break; - - default:; - } -} - -static void -seq_chn_common_event (unsigned char *event) -{ - unsigned char dev = event[1]; - unsigned char cmd = event[2]; - unsigned char chn = event[3]; - unsigned char p1 = event[4]; - - /* unsigned char p2 = event[5]; */ - unsigned short w14 = *(short *) &event[6]; - - if ((int) dev > max_synthdev) - return; - if (!(synth_open_mask & (1 << dev))) - return; - if (!synth_devs[dev]) - return; - - switch (cmd) - { - case MIDI_PGM_CHANGE: - if (seq_mode == SEQ_2) - { - synth_devs[dev]->chn_info[chn].pgm_num = p1; - if (dev >= num_synths) - synth_devs[dev]->set_instr (dev, chn, p1); - } - else - synth_devs[dev]->set_instr (dev, chn, p1); - - break; - - case MIDI_CTL_CHANGE: - - if (seq_mode == SEQ_2) - { - if (chn > 15 || p1 > 127) - break; - - synth_devs[dev]->chn_info[chn].controllers[p1] = w14 & 0x7f; - - if (dev < num_synths) - { - int val = w14 & 0x7f; - int i, key; - - if (p1 < 64) /* Combine MSB and LSB */ - { - val = ((synth_devs[dev]-> - chn_info[chn].controllers[p1 & ~32] & 0x7f) << 7) - | (synth_devs[dev]-> - chn_info[chn].controllers[p1 | 32] & 0x7f); - p1 &= ~32; - } - - /* Handle all playing notes on this channel */ - - key = (chn << 8); - - for (i = 0; i < synth_devs[dev]->alloc.max_voice; i++) - if ((synth_devs[dev]->alloc.map[i] & 0xff00) == key) - synth_devs[dev]->controller (dev, i, p1, val); - } - else - synth_devs[dev]->controller (dev, chn, p1, w14); - } - else /* Mode 1 */ - synth_devs[dev]->controller (dev, chn, p1, w14); - break; - - case MIDI_PITCH_BEND: - if (seq_mode == SEQ_2) - { - synth_devs[dev]->chn_info[chn].bender_value = w14; - - if (dev < num_synths) - { /* Handle all playing notes on this channel */ - int i, key; - - key = (chn << 8); - - for (i = 0; i < synth_devs[dev]->alloc.max_voice; i++) - if ((synth_devs[dev]->alloc.map[i] & 0xff00) == key) - synth_devs[dev]->bender (dev, i, w14); - } - else - synth_devs[dev]->bender (dev, chn, w14); - } - else /* MODE 1 */ - synth_devs[dev]->bender (dev, chn, w14); - break; - - default:; - } -} - -static int -seq_timing_event (unsigned char *event) -{ - unsigned char cmd = event[1]; - unsigned int parm = *(int *) &event[4]; - - if (seq_mode == SEQ_2) - { - int ret; - - if ((ret = tmr->event (tmr_no, event)) == TIMER_ARMED) - { - if ((SEQ_MAX_QUEUE - qlen) >= output_treshold) - { - unsigned long flags; - - DISABLE_INTR (flags); - if (SOMEONE_WAITING (seq_sleeper, seq_sleep_flag)) - { - WAKE_UP (seq_sleeper, seq_sleep_flag); - } - RESTORE_INTR (flags); -#if defined(__FreeBSD__) - /* must issue a wakeup for anyone waiting (select) XXX */ -#endif - } - } - return ret; - } - - switch (cmd) - { - case TMR_WAIT_REL: - parm += prev_event_time; - - /* - * NOTE! No break here. Execution of TMR_WAIT_REL continues in the - * next case (TMR_WAIT_ABS) - */ - - case TMR_WAIT_ABS: - if (parm > 0) - { - long time; - - seq_playing = 1; - time = parm; - prev_event_time = time; - - request_sound_timer (time); - - if ((SEQ_MAX_QUEUE - qlen) >= output_treshold) - { - unsigned long flags; - - DISABLE_INTR (flags); - if (SOMEONE_WAITING (seq_sleeper, seq_sleep_flag)) - { - WAKE_UP (seq_sleeper, seq_sleep_flag); - } - RESTORE_INTR (flags); -#if defined(__FreeBSD__) - /* must issue a wakeup for select XXX */ -#endif - } - - return TIMER_ARMED; - } - break; - - case TMR_START: - seq_time = GET_TIME (); - prev_input_time = 0; - prev_event_time = 0; - break; - - case TMR_STOP: - break; - - case TMR_CONTINUE: - break; - - case TMR_TEMPO: - break; - - case TMR_ECHO: - if (seq_mode == SEQ_2) - seq_copy_to_input (event, 8); - else - { - parm = (parm << 8 | SEQ_ECHO); - seq_copy_to_input ((unsigned char *) &parm, 4); - } - break; - - default:; - } - - return TIMER_NOT_ARMED; -} - -static void -seq_local_event (unsigned char *event) -{ - /* unsigned char cmd = event[1]; */ - - printk ("seq_local_event() called. WHY????????\n"); -} - -static int -play_event (unsigned char *q) -{ - /* - * NOTE! This routine returns - * 0 = normal event played. - * 1 = Timer armed. Suspend playback until timer callback. - * 2 = MIDI output buffer full. Restore queue and suspend until timer - */ - unsigned long *delay; - - switch (q[0]) - { - case SEQ_NOTEOFF: - if (synth_open_mask & (1 << 0)) - if (synth_devs[0]) - synth_devs[0]->kill_note (0, q[1], 255, q[3]); - break; - - case SEQ_NOTEON: - if (q[4] < 128 || q[4] == 255) - if (synth_open_mask & (1 << 0)) - if (synth_devs[0]) - synth_devs[0]->start_note (0, q[1], q[2], q[3]); - break; - - case SEQ_WAIT: - delay = (unsigned long *) q; /* - * Bytes 1 to 3 are containing the * - * delay in GET_TIME() - */ - *delay = (*delay >> 8) & 0xffffff; - - if (*delay > 0) - { - long time; - - seq_playing = 1; - time = *delay; - prev_event_time = time; - - request_sound_timer (time); - - if ((SEQ_MAX_QUEUE - qlen) >= output_treshold) - { - unsigned long flags; - - DISABLE_INTR (flags); - if (SOMEONE_WAITING (seq_sleeper, seq_sleep_flag)) - { - WAKE_UP (seq_sleeper, seq_sleep_flag); - } - RESTORE_INTR (flags); -#if defined(__FreeBSD__) - /* must issue a wakeup for selects XXX */ -#endif - } - /* - * The timer is now active and will reinvoke this function - * after the timer expires. Return to the caller now. - */ - return 1; - } - break; - - case SEQ_PGMCHANGE: - if (synth_open_mask & (1 << 0)) - if (synth_devs[0]) - synth_devs[0]->set_instr (0, q[1], q[2]); - break; - - case SEQ_SYNCTIMER: /* - * Reset timer - */ - seq_time = GET_TIME (); - prev_input_time = 0; - prev_event_time = 0; - break; - - case SEQ_MIDIPUTC: /* - * Put a midi character - */ - if (midi_opened[q[2]]) - { - int dev; - - dev = q[2]; - - if (!midi_devs[dev]->putc (dev, q[1])) - { - /* - * Output FIFO is full. Wait one timer cycle and try again. - */ - - seq_playing = 1; - request_sound_timer (-1); - return 2; - } - else - midi_written[dev] = 1; - } - break; - - case SEQ_ECHO: - seq_copy_to_input (q, 4); /* - * Echo back to the process - */ - break; - - case SEQ_PRIVATE: - if ((int) q[1] < max_synthdev) - synth_devs[q[1]]->hw_control (q[1], q); - break; - - case SEQ_EXTENDED: - extended_event (q); - break; - - case EV_CHN_VOICE: - seq_chn_voice_event (q); - break; - - case EV_CHN_COMMON: - seq_chn_common_event (q); - break; - - case EV_TIMING: - if (seq_timing_event (q) == TIMER_ARMED) - { - return 1; - } - break; - - case EV_SEQ_LOCAL: - seq_local_event (q); - break; - - default:; - } - - return 0; -} - -static void -seq_startplay (void) -{ - unsigned long flags; - int this_one, action; - - while (qlen > 0) - { - - DISABLE_INTR (flags); - qhead = ((this_one = qhead) + 1) % SEQ_MAX_QUEUE; - qlen--; - RESTORE_INTR (flags); - - seq_playing = 1; - - if ((action = play_event (&queue[this_one * EV_SZ]))) - { /* Suspend playback. Next timer routine invokes this routine again */ - if (action == 2) - { - qlen++; - qhead = this_one; - } - return; - } - - } - - seq_playing = 0; - - if ((SEQ_MAX_QUEUE - qlen) >= output_treshold) - { - unsigned long flags; - - DISABLE_INTR (flags); - if (SOMEONE_WAITING (seq_sleeper, seq_sleep_flag)) - { - WAKE_UP (seq_sleeper, seq_sleep_flag); - } - RESTORE_INTR (flags); -#if defined(__FreeBSD__) - /* must issue a wakeup for selects XXX */ -#endif - } -} - -static void -reset_controllers (int dev, unsigned char *controller, int update_dev) -{ - - int i; - - for (i = 0; i < 128; i++) - controller[i] = ctrl_def_values[i]; -} - -static void -setup_mode2 (void) -{ - int dev; - - max_synthdev = num_synths; - - for (dev = 0; dev < num_midis; dev++) - if (midi_devs[dev]->converter != NULL) - { - synth_devs[max_synthdev++] = - midi_devs[dev]->converter; - } - - for (dev = 0; dev < max_synthdev; dev++) - { - int chn; - - for (chn = 0; chn < 16; chn++) - { - synth_devs[dev]->chn_info[chn].pgm_num = 0; - reset_controllers (dev, - synth_devs[dev]->chn_info[chn].controllers, - 0); - synth_devs[dev]->chn_info[chn].bender_value = (1 << 7); /* Neutral */ - } - } - - max_mididev = 0; - seq_mode = SEQ_2; -} - -int -sequencer_open (int dev, struct fileinfo *file) -{ - int retval, mode, i; - int level, tmp; - - level = ((dev & 0x0f) == SND_DEV_SEQ2) ? 2 : 1; - - dev = dev >> 4; - mode = file->mode & O_ACCMODE; - - DEB (printk ("sequencer_open(dev=%d)\n", dev)); - - if (!sequencer_ok) - { - printk ("Soundcard: Sequencer not initialized\n"); - return RET_ERROR (ENXIO); - } - - if (dev) /* - * Patch manager device - */ - { - int err; - - dev--; - - if (dev >= MAX_SYNTH_DEV) - return RET_ERROR (ENXIO); - if (pmgr_present[dev]) - return RET_ERROR (EBUSY); - if ((err = pmgr_open (dev)) < 0) - return err; /* - * Failed - */ - - pmgr_present[dev] = 1; - return err; - } - - if (sequencer_busy) - { - printk ("Sequencer busy\n"); - return RET_ERROR (EBUSY); - } - - max_mididev = num_midis; - max_synthdev = num_synths; - pre_event_timeout = 0; - seq_mode = SEQ_1; - - if (pending_timer != -1) - { - tmr_no = pending_timer; - pending_timer = -1; - } - - if (tmr_no == -1) /* Not selected yet */ - { - int i, best; - - best = -1; - for (i = 0; i < num_sound_timers; i++) - if (sound_timer_devs[i]->priority > best) - { - tmr_no = i; - best = sound_timer_devs[i]->priority; - } - - if (tmr_no == -1) /* Should not be */ - tmr_no = 0; - } - - tmr = sound_timer_devs[tmr_no]; - - if (level == 2) - { - if (tmr == NULL) - { - printk ("sequencer: No timer for level 2\n"); - return RET_ERROR (ENXIO); - } - setup_mode2 (); - } - - if (seq_mode == SEQ_1 && (mode == OPEN_READ || mode == OPEN_READWRITE)) - if (!max_mididev) - { - printk ("Sequencer: No Midi devices. Input not possible\n"); - return RET_ERROR (ENXIO); - } - - if (!max_synthdev && !max_mididev) - return RET_ERROR (ENXIO); - - synth_open_mask = 0; - - for (i = 0; i < max_mididev; i++) - { - midi_opened[i] = 0; - midi_written[i] = 0; - } - - /* - * if (mode == OPEN_WRITE || mode == OPEN_READWRITE) - */ - for (i = 0; i < max_synthdev; i++) /* - * Open synth devices - */ - if ((tmp = synth_devs[i]->open (i, mode)) < 0) - { - printk ("Sequencer: Warning! Cannot open synth device #%d (%d)\n", i, tmp); - if (synth_devs[i]->midi_dev) - printk ("(Maps to MIDI dev #%d)\n", synth_devs[i]->midi_dev); - } - else - { - synth_open_mask |= (1 << i); - if (synth_devs[i]->midi_dev) /* - * Is a midi interface - */ - midi_opened[synth_devs[i]->midi_dev] = 1; - } - - seq_time = GET_TIME (); - prev_input_time = 0; - prev_event_time = 0; - - if (seq_mode == SEQ_1 && (mode == OPEN_READ || mode == OPEN_READWRITE)) - { /* - * Initialize midi input devices - */ - for (i = 0; i < max_mididev; i++) - if (!midi_opened[i]) - { - if ((retval = midi_devs[i]->open (i, mode, - sequencer_midi_input, sequencer_midi_output)) >= 0) - midi_opened[i] = 1; - } - } - - if (seq_mode == SEQ_2) - { - tmr->open (tmr_no, seq_mode); - } - - sequencer_busy = 1; - RESET_WAIT_QUEUE (seq_sleeper, seq_sleep_flag); - RESET_WAIT_QUEUE (midi_sleeper, midi_sleep_flag); - output_treshold = SEQ_MAX_QUEUE / 2; - - for (i = 0; i < num_synths; i++) - if (pmgr_present[i]) - pmgr_inform (i, PM_E_OPENED, 0, 0, 0, 0); - - return 0; -} - -void -seq_drain_midi_queues (void) -{ - int i, n; - - /* - * Give the Midi drivers time to drain their output queues - */ - - n = 1; - - while (!PROCESS_ABORTING (seq_sleeper, seq_sleep_flag) && n) - { - n = 0; - - for (i = 0; i < max_mididev; i++) - if (midi_opened[i] && midi_written[i]) - if (midi_devs[i]->buffer_status != NULL) - if (midi_devs[i]->buffer_status (i)) - n++; - - /* - * Let's have a delay - */ - if (n) - { - DO_SLEEP (seq_sleeper, seq_sleep_flag, HZ / 10); - } - } -} - -void -sequencer_release (int dev, struct fileinfo *file) -{ - int i; - int mode = file->mode & O_ACCMODE; - - dev = dev >> 4; - - DEB (printk ("sequencer_release(dev=%d)\n", dev)); - - if (dev) /* - * Patch manager device - */ - { - dev--; - pmgr_release (dev); - pmgr_present[dev] = 0; - return; - } - - /* - * * Wait until the queue is empty (if we don't have nonblock) - */ - - if (mode != OPEN_READ && !ISSET_FILE_FLAG (file, O_NONBLOCK)) - while (!PROCESS_ABORTING (seq_sleeper, seq_sleep_flag) && qlen) - { - seq_sync (); - } - - if (mode != OPEN_READ) - seq_drain_midi_queues (); /* - * Ensure the output queues are empty - */ - seq_reset (); - if (mode != OPEN_READ) - seq_drain_midi_queues (); /* - * Flush the all notes off messages - */ - - for (i = 0; i < max_synthdev; i++) - if (synth_open_mask & (1 << i)) /* - * Actually opened - */ - if (synth_devs[i]) - { - synth_devs[i]->close (i); - - if (synth_devs[i]->midi_dev) - midi_opened[synth_devs[i]->midi_dev] = 0; - } - - for (i = 0; i < num_synths; i++) - if (pmgr_present[i]) - pmgr_inform (i, PM_E_CLOSED, 0, 0, 0, 0); - - for (i = 0; i < max_mididev; i++) - if (midi_opened[i]) - midi_devs[i]->close (i); - - if (seq_mode == SEQ_2) - tmr->close (tmr_no); - - sequencer_busy = 0; -} - -static int -seq_sync (void) -{ - unsigned long flags; - - if (qlen && !seq_playing && !PROCESS_ABORTING (seq_sleeper, seq_sleep_flag)) - seq_startplay (); - - DISABLE_INTR (flags); - if (qlen && !SOMEONE_WAITING (seq_sleeper, seq_sleep_flag)) - { - DO_SLEEP (seq_sleeper, seq_sleep_flag, 0); - } - RESTORE_INTR (flags); - - return qlen; -} - -static void -midi_outc (int dev, unsigned char data) -{ - /* - * NOTE! Calls sleep(). Don't call this from interrupt. - */ - - int n; - unsigned long flags; - - /* - * This routine sends one byte to the Midi channel. - * If the output Fifo is full, it waits until there - * is space in the queue - */ - - n = 3 * HZ; /* Timeout */ - - DISABLE_INTR (flags); - while (n && !midi_devs[dev]->putc (dev, data)) - { - DO_SLEEP (seq_sleeper, seq_sleep_flag, 4); - n--; - } - RESTORE_INTR (flags); -} - -static void -seq_reset (void) -{ - /* - * NOTE! Calls sleep(). Don't call this from interrupt. - */ - - int i; - int chn; - unsigned long flags; - - sound_stop_timer (); - seq_time = GET_TIME (); - prev_input_time = 0; - prev_event_time = 0; - - qlen = qhead = qtail = 0; - iqlen = iqhead = iqtail = 0; - - for (i = 0; i < max_synthdev; i++) - if (synth_open_mask & (1 << i)) - if (synth_devs[i]) - synth_devs[i]->reset (i); - - if (seq_mode == SEQ_2) - { - - for (chn = 0; chn < 16; chn++) - for (i = 0; i < max_synthdev; i++) - if (synth_open_mask & (1 << i)) - if (synth_devs[i]) - { - synth_devs[i]->controller (i, chn, 123, 0); /* All notes off */ - synth_devs[i]->controller (i, chn, 121, 0); /* Reset all ctl */ - synth_devs[i]->bender (i, chn, 1 << 13); /* Bender off */ - } - - } - else - /* seq_mode == SEQ_1 */ - { - for (i = 0; i < max_mididev; i++) - if (midi_written[i]) /* - * Midi used. Some notes may still be playing - */ - { - /* - * Sending just a ACTIVE SENSING message should be enough to stop all - * playing notes. Since there are devices not recognizing the - * active sensing, we have to send some all notes off messages also. - */ - midi_outc (i, 0xfe); - - for (chn = 0; chn < 16; chn++) - { - midi_outc (i, - (unsigned char) (0xb0 + (chn & 0x0f))); /* control change */ - midi_outc (i, 0x7b); /* All notes off */ - midi_outc (i, 0); /* Dummy parameter */ - } - - midi_devs[i]->close (i); - - midi_written[i] = 0; - midi_opened[i] = 0; - } - } - - seq_playing = 0; - - DISABLE_INTR (flags); - if (SOMEONE_WAITING (seq_sleeper, seq_sleep_flag)) - { - /* printk ("Sequencer Warning: Unexpected sleeping process - Waking up\n"); */ - WAKE_UP (seq_sleeper, seq_sleep_flag); - } - RESTORE_INTR (flags); - -} - -static void -seq_panic (void) -{ - /* - * This routine is called by the application in case the user - * wants to reset the system to the default state. - */ - - seq_reset (); - - /* - * Since some of the devices don't recognize the active sensing and - * all notes off messages, we have to shut all notes manually. - * - * TO BE IMPLEMENTED LATER - */ - - /* - * Also return the controllers to their default states - */ -} - -int -sequencer_ioctl (int dev, struct fileinfo *file, - unsigned int cmd, unsigned int arg) -{ - int midi_dev, orig_dev; - int mode = file->mode & O_ACCMODE; - - orig_dev = dev = dev >> 4; - - switch (cmd) - { - case SNDCTL_TMR_TIMEBASE: - case SNDCTL_TMR_TEMPO: - case SNDCTL_TMR_START: - case SNDCTL_TMR_STOP: - case SNDCTL_TMR_CONTINUE: - case SNDCTL_TMR_METRONOME: - case SNDCTL_TMR_SOURCE: - if (dev) /* Patch manager */ - return RET_ERROR (EIO); - - if (seq_mode != SEQ_2) - return RET_ERROR (EINVAL); - return tmr->ioctl (tmr_no, cmd, arg); - break; - - case SNDCTL_TMR_SELECT: - if (dev) /* Patch manager */ - return RET_ERROR (EIO); - - if (seq_mode != SEQ_2) - return RET_ERROR (EINVAL); - pending_timer = IOCTL_IN (arg); - - if (pending_timer < 0 || pending_timer >= num_sound_timers) - { - pending_timer = -1; - return RET_ERROR (EINVAL); - } - - return IOCTL_OUT (arg, pending_timer); - break; - - case SNDCTL_SEQ_PANIC: - seq_panic (); - break; - - case SNDCTL_SEQ_SYNC: - if (dev) /* - * Patch manager - */ - return RET_ERROR (EIO); - - if (mode == OPEN_READ) - return 0; - while (qlen && !PROCESS_ABORTING (seq_sleeper, seq_sleep_flag)) - seq_sync (); - if (qlen) - return RET_ERROR (EINTR); - else - return 0; - break; - - case SNDCTL_SEQ_RESET: - if (dev) /* - * Patch manager - */ - return RET_ERROR (EIO); - - seq_reset (); - return 0; - break; - - case SNDCTL_SEQ_TESTMIDI: - if (dev) /* - * Patch manager - */ - return RET_ERROR (EIO); - - midi_dev = IOCTL_IN (arg); - if (midi_dev >= max_mididev) - return RET_ERROR (ENXIO); - - if (!midi_opened[midi_dev]) - { - int err, mode; - - mode = file->mode & O_ACCMODE; - if ((err = midi_devs[midi_dev]->open (midi_dev, mode, - sequencer_midi_input, - sequencer_midi_output)) < 0) - return err; - } - - midi_opened[midi_dev] = 1; - - return 0; - break; - - case SNDCTL_SEQ_GETINCOUNT: - if (dev) /* - * Patch manager - */ - return RET_ERROR (EIO); - - if (mode == OPEN_WRITE) - return 0; - return IOCTL_OUT (arg, iqlen); - break; - - case SNDCTL_SEQ_GETOUTCOUNT: - - if (mode == OPEN_READ) - return 0; - return IOCTL_OUT (arg, SEQ_MAX_QUEUE - qlen); - break; - - case SNDCTL_SEQ_CTRLRATE: - if (dev) /* Patch manager */ - return RET_ERROR (EIO); - - /* - * If *arg == 0, just return the current rate - */ - if (seq_mode == SEQ_2) - return tmr->ioctl (tmr_no, cmd, arg); - - if (IOCTL_IN (arg) != 0) - return RET_ERROR (EINVAL); - - return IOCTL_OUT (arg, HZ); - break; - - case SNDCTL_SEQ_RESETSAMPLES: - dev = IOCTL_IN (arg); - if (dev < 0 || dev >= num_synths) - return RET_ERROR (ENXIO); - - if (!(synth_open_mask & (1 << dev)) && !orig_dev) - return RET_ERROR (EBUSY); - - if (!orig_dev && pmgr_present[dev]) - pmgr_inform (dev, PM_E_PATCH_RESET, 0, 0, 0, 0); - - return synth_devs[dev]->ioctl (dev, cmd, arg); - break; - - case SNDCTL_SEQ_NRSYNTHS: - return IOCTL_OUT (arg, max_synthdev); - break; - - case SNDCTL_SEQ_NRMIDIS: - return IOCTL_OUT (arg, max_mididev); - break; - - case SNDCTL_SYNTH_MEMAVL: - { - int dev = IOCTL_IN (arg); - - if (dev < 0 || dev >= num_synths) - return RET_ERROR (ENXIO); - - if (!(synth_open_mask & (1 << dev)) && !orig_dev) - return RET_ERROR (EBUSY); - - return IOCTL_OUT (arg, synth_devs[dev]->ioctl (dev, cmd, arg)); - } - break; - - case SNDCTL_FM_4OP_ENABLE: - { - int dev = IOCTL_IN (arg); - - if (dev < 0 || dev >= num_synths) - return RET_ERROR (ENXIO); - - if (!(synth_open_mask & (1 << dev))) - return RET_ERROR (ENXIO); - - synth_devs[dev]->ioctl (dev, cmd, arg); - return 0; - } - break; - - case SNDCTL_SYNTH_INFO: - { - struct synth_info inf; - int dev; - - IOCTL_FROM_USER ((char *) &inf, (char *) arg, 0, sizeof (inf)); - dev = inf.device; - - if (dev < 0 || dev >= max_synthdev) - return RET_ERROR (ENXIO); - - if (!(synth_open_mask & (1 << dev)) && !orig_dev) - return RET_ERROR (EBUSY); - - return synth_devs[dev]->ioctl (dev, cmd, arg); - } - break; - - case SNDCTL_SEQ_OUTOFBAND: - { - struct seq_event_rec event; - unsigned long flags; - - IOCTL_FROM_USER ((char *) &event, (char *) arg, 0, sizeof (event)); - - DISABLE_INTR (flags); - play_event (event.arr); - RESTORE_INTR (flags); - - return 0; - } - break; - - case SNDCTL_MIDI_INFO: - { - struct midi_info inf; - int dev; - - IOCTL_FROM_USER ((char *) &inf, (char *) arg, 0, sizeof (inf)); - dev = inf.device; - - if (dev < 0 || dev >= max_mididev) - return RET_ERROR (ENXIO); - - IOCTL_TO_USER ((char *) arg, 0, (char *) &(midi_devs[dev]->info), sizeof (inf)); - return 0; - } - break; - - case SNDCTL_PMGR_IFACE: - { - struct patmgr_info *inf; - int dev, err; - - if ((inf = (struct patmgr_info *) KERNEL_MALLOC (sizeof (*inf))) == NULL) - { - printk ("patmgr: Can't allocate memory for a message\n"); - return RET_ERROR (EIO); - } - - IOCTL_FROM_USER ((char *) inf, (char *) arg, 0, sizeof (*inf)); - dev = inf->device; - - if (dev < 0 || dev >= num_synths) - { - KERNEL_FREE (inf); - return RET_ERROR (ENXIO); - } - - if (!synth_devs[dev]->pmgr_interface) - { - KERNEL_FREE (inf); - return RET_ERROR (ENXIO); - } - - if ((err = synth_devs[dev]->pmgr_interface (dev, inf)) == -1) - { - KERNEL_FREE (inf); - return err; - } - - IOCTL_TO_USER ((char *) arg, 0, (char *) inf, sizeof (*inf)); - KERNEL_FREE (inf); - return 0; - } - break; - - case SNDCTL_PMGR_ACCESS: - { - struct patmgr_info *inf; - int dev, err; - - if ((inf = (struct patmgr_info *) KERNEL_MALLOC (sizeof (*inf))) == NULL) - { - printk ("patmgr: Can't allocate memory for a message\n"); - return RET_ERROR (EIO); - } - - IOCTL_FROM_USER ((char *) inf, (char *) arg, 0, sizeof (*inf)); - dev = inf->device; - - if (dev < 0 || dev >= num_synths) - { - KERNEL_FREE (inf); - return RET_ERROR (ENXIO); - } - - if (!pmgr_present[dev]) - { - KERNEL_FREE (inf); - return RET_ERROR (ESRCH); - } - - if ((err = pmgr_access (dev, inf)) < 0) - { - KERNEL_FREE (inf); - return err; - } - - IOCTL_TO_USER ((char *) arg, 0, (char *) inf, sizeof (*inf)); - KERNEL_FREE (inf); - return 0; - } - break; - - case SNDCTL_SEQ_TRESHOLD: - { - int tmp = IOCTL_IN (arg); - - if (dev) /* - * Patch manager - */ - return RET_ERROR (EIO); - - if (tmp < 1) - tmp = 1; - if (tmp >= SEQ_MAX_QUEUE) - tmp = SEQ_MAX_QUEUE - 1; - output_treshold = tmp; - return 0; - } - break; - - case SNDCTL_MIDI_PRETIME: - { - int val = IOCTL_IN (arg); - - if (val < 0) - val = 0; - - val = (HZ * val) / 10; - pre_event_timeout = val; - return IOCTL_OUT (arg, val); - } - break; - - default: - if (dev) /* - * Patch manager - */ - return RET_ERROR (EIO); - - if (mode == OPEN_READ) - return RET_ERROR (EIO); - - if (!synth_devs[0]) - return RET_ERROR (ENXIO); - if (!(synth_open_mask & (1 << 0))) - return RET_ERROR (ENXIO); - return synth_devs[0]->ioctl (0, cmd, arg); - break; - } - - return RET_ERROR (EINVAL); -} - -#ifdef ALLOW_SELECT -int -sequencer_select (int dev, struct fileinfo *file, int sel_type, select_table * wait) -{ - unsigned long flags; - - dev = dev >> 4; - - switch (sel_type) - { - case SEL_IN: - DISABLE_INTR (flags); - if (!iqlen) - { -#if defined(__FreeBSD__) - selrecord(wait, &selinfo[dev]); -#else - midi_sleep_flag.mode = WK_SLEEP; - select_wait (&midi_sleeper, wait); -#endif - RESTORE_INTR (flags); - return 0; - } - midi_sleep_flag.mode &= ~WK_SLEEP; - RESTORE_INTR (flags); - return 1; - break; - - case SEL_OUT: - DISABLE_INTR (flags); - if (qlen >= SEQ_MAX_QUEUE) - { -#if defined(__FreeBSD__) - selrecord(wait, &selinfo[dev]); -#else - seq_sleep_flag.mode = WK_SLEEP; - select_wait (&seq_sleeper, wait); -#endif - RESTORE_INTR (flags); - return 0; - } - seq_sleep_flag.mode &= ~WK_SLEEP; - RESTORE_INTR (flags); - return 1; - break; - - case SEL_EX: - return 0; - } - - return 0; -} - -#endif - -void -sequencer_timer (void) -{ - seq_startplay (); -} - -int -note_to_freq (int note_num) -{ - - /* - * This routine converts a midi note to a frequency (multiplied by 1000) - */ - - int note, octave, note_freq; - int notes[] = - { - 261632, 277189, 293671, 311132, 329632, 349232, - 369998, 391998, 415306, 440000, 466162, 493880 - }; - -#define BASE_OCTAVE 5 - - octave = note_num / 12; - note = note_num % 12; - - note_freq = notes[note]; - - if (octave < BASE_OCTAVE) - note_freq >>= (BASE_OCTAVE - octave); - else if (octave > BASE_OCTAVE) - note_freq <<= (octave - BASE_OCTAVE); - - /* - * note_freq >>= 1; - */ - - return note_freq; -} - -unsigned long -compute_finetune (unsigned long base_freq, int bend, int range) -{ - unsigned long amount; - int negative, semitones, cents, multiplier = 1; - - if (!bend) - return base_freq; - if (!range) - return base_freq; - - if (!base_freq) - return base_freq; - - if (range >= 8192) - range = 8191; - - bend = bend * range / 8192; - if (!bend) - return base_freq; - - negative = bend < 0 ? 1 : 0; - - if (bend < 0) - bend *= -1; - if (bend > range) - bend = range; - - /* - if (bend > 2399) - bend = 2399; - */ - while (bend > 2399) - { - multiplier *= 4; - bend -= 2400; - } - - semitones = bend / 100; - cents = bend % 100; - - amount = (int) (semitone_tuning[semitones] * multiplier * cent_tuning[cents]) - / 10000; - - if (negative) - return (base_freq * 10000) / amount; /* - * Bend down - */ - else - return (base_freq * amount) / 10000; /* - * Bend up - */ -} - - -long -sequencer_init (long mem_start) -{ - - sequencer_ok = 1; - PERMANENT_MALLOC (unsigned char *, queue, SEQ_MAX_QUEUE * EV_SZ, mem_start); - PERMANENT_MALLOC (unsigned char *, iqueue, SEQ_MAX_QUEUE * IEV_SZ, mem_start); - - return mem_start; -} - -#else -/* - * Stub version - */ -int -sequencer_read (int dev, struct fileinfo *file, snd_rw_buf * buf, int count) -{ - return RET_ERROR (EIO); -} - -int -sequencer_write (int dev, struct fileinfo *file, snd_rw_buf * buf, int count) -{ - return RET_ERROR (EIO); -} - -int -sequencer_open (int dev, struct fileinfo *file) -{ - return RET_ERROR (ENXIO); -} - -void -sequencer_release (int dev, struct fileinfo *file) -{ -} -int -sequencer_ioctl (int dev, struct fileinfo *file, - unsigned int cmd, unsigned int arg) -{ - return RET_ERROR (EIO); -} - -int -sequencer_lseek (int dev, struct fileinfo *file, off_t offset, int orig) -{ - return RET_ERROR (EIO); -} - -long -sequencer_init (long mem_start) -{ - return mem_start; -} - -#ifdef ALLOW_SELECT -int -sequencer_select (int dev, struct fileinfo *file, int sel_type, select_table * wait) -{ - return RET_ERROR (EIO); -} - -#endif - -#endif - -#endif |