summaryrefslogtreecommitdiffstats
path: root/sys/i386/isa/sound/midi_synth.c
diff options
context:
space:
mode:
Diffstat (limited to 'sys/i386/isa/sound/midi_synth.c')
-rw-r--r--sys/i386/isa/sound/midi_synth.c675
1 files changed, 0 insertions, 675 deletions
diff --git a/sys/i386/isa/sound/midi_synth.c b/sys/i386/isa/sound/midi_synth.c
deleted file mode 100644
index e63b24a..0000000
--- a/sys/i386/isa/sound/midi_synth.c
+++ /dev/null
@@ -1,675 +0,0 @@
-/*
- * sound/midi_synth.c
- *
- * High level midi sequencer manager for dumb MIDI interfaces.
- *
- * 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 USE_SEQ_MACROS
-#define USE_SIMPLE_MACROS
-
-#include <stddef.h>
-
-#include <i386/isa/sound/sound_config.h>
-
-#if defined(CONFIGURE_SOUNDCARD) /* && defined(CONFIG_MIDI) */
-
-#define _MIDI_SYNTH_C_
-
-static int *sysex_sleeper = NULL;
-static volatile struct snd_wait sysex_sleep_flag = {0};
-
-#include <i386/isa/sound/midi_synth.h>
-
-static int midi2synth[MAX_MIDI_DEV];
-static int sysex_state[MAX_MIDI_DEV] =
-{0};
-static unsigned char prev_out_status[MAX_MIDI_DEV];
-
-#ifndef CONFIG_SEQUENCER
-#define STORE(cmd)
-#else
-#define STORE(cmd) { \
- int len; \
- unsigned char obuf[8]; \
- cmd; \
- seq_input_event(obuf, len); \
-}
-#endif
-
-#define _seqbuf obuf
-#define _seqbufptr 0
-#define _SEQ_ADVBUF(x) len=x
-
-void
-do_midi_msg(int synthno, unsigned char *msg, int mlen)
-{
- switch (msg[0] & 0xf0) {
- case 0x90:
- if (msg[2] != 0) {
- STORE(SEQ_START_NOTE(synthno, msg[0] & 0x0f, msg[1], msg[2]));
- break;
- }
- msg[2] = 64;
-
- case 0x80:
- STORE(SEQ_STOP_NOTE(synthno, msg[0] & 0x0f, msg[1], msg[2]));
- break;
-
- case 0xA0:
- STORE(SEQ_KEY_PRESSURE(synthno, msg[0] & 0x0f, msg[1], msg[2]));
- break;
-
- case 0xB0:
- STORE(SEQ_CONTROL(synthno, msg[0] & 0x0f, msg[1], msg[2]));
- break;
-
- case 0xC0:
- STORE(SEQ_SET_PATCH(synthno, msg[0] & 0x0f, msg[1]));
- break;
-
- case 0xD0:
- STORE(SEQ_CHN_PRESSURE(synthno, msg[0] & 0x0f, msg[1]));
- break;
-
- case 0xE0:
- STORE(SEQ_BENDER(synthno, msg[0] & 0x0f,
- (msg[1] % 0x7f) | ((msg[2] & 0x7f) << 7)));
- break;
-
- default:
- /*
- * printf ("MPU: Unknown midi channel message %02x\n",
- * msg[0]);
- */
- ;
- }
-}
-
-static void
-midi_outc(int midi_dev, int data)
-{
- int timeout;
-
- for (timeout = 0; timeout < 32000; timeout++)
- if (midi_devs[midi_dev]->putc(midi_dev, (unsigned char) (data & 0xff))) {
- if (data & 0x80) /* Status byte */
- prev_out_status[midi_dev] =
- (unsigned char) (data & 0xff); /* Store for running
- * status */
- return; /* Mission complete */
- }
- /*
- * Sorry! No space on buffers.
- */
- printf("Midi send timed out\n");
-}
-
-static int
-prefix_cmd(int midi_dev, unsigned char status)
-{
- if ((char *) midi_devs[midi_dev]->prefix_cmd == NULL)
- return 1;
-
- return midi_devs[midi_dev]->prefix_cmd(midi_dev, status);
-}
-
-static void
-midi_synth_input(int orig_dev, unsigned char data)
-{
- int dev;
- struct midi_input_info *inc;
-
- static unsigned char len_tab[] = /* # of data bytes following a status */
- {
- 2, /* 8x */
- 2, /* 9x */
- 2, /* Ax */
- 2, /* Bx */
- 1, /* Cx */
- 1, /* Dx */
- 2, /* Ex */
- 0 /* Fx */
- };
-
- if (orig_dev < 0 || orig_dev > num_midis)
- return;
-
- if (data == 0xfe) /* Ignore active sensing */
- return;
-
- dev = midi2synth[orig_dev];
- inc = &midi_devs[orig_dev]->in_info;
-
- switch (inc->m_state) {
- case MST_INIT:
- if (data & 0x80) { /* MIDI status byte */
- if ((data & 0xf0) == 0xf0) { /* Common message */
- switch (data) {
- case 0xf0: /* Sysex */
- inc->m_state = MST_SYSEX;
- break; /* Sysex */
-
- case 0xf1: /* MTC quarter frame */
- case 0xf3: /* Song select */
- inc->m_state = MST_DATA;
- inc->m_ptr = 1;
- inc->m_left = 1;
- inc->m_buf[0] = data;
- break;
-
- case 0xf2: /* Song position pointer */
- inc->m_state = MST_DATA;
- inc->m_ptr = 1;
- inc->m_left = 2;
- inc->m_buf[0] = data;
- break;
-
- default:
- inc->m_buf[0] = data;
- inc->m_ptr = 1;
- do_midi_msg(dev, inc->m_buf, inc->m_ptr);
- inc->m_ptr = 0;
- inc->m_left = 0;
- }
- } else {
- inc->m_state = MST_DATA;
- inc->m_ptr = 1;
- inc->m_left = len_tab[(data >> 4) - 8];
- inc->m_buf[0] = inc->m_prev_status = data;
- }
- } else if (inc->m_prev_status & 0x80) { /* Ignore if no previous
- * status (yet) *//* Data byte (use running status) */
- inc->m_state = MST_DATA;
- inc->m_ptr = 2;
- inc->m_left = len_tab[(data >> 4) - 8] - 1;
- inc->m_buf[0] = inc->m_prev_status;
- inc->m_buf[1] = data;
- }
- break; /* MST_INIT */
-
- case MST_DATA:
- inc->m_buf[inc->m_ptr++] = data;
- if (--inc->m_left <= 0) {
- inc->m_state = MST_INIT;
- do_midi_msg(dev, inc->m_buf, inc->m_ptr);
- inc->m_ptr = 0;
- }
- break; /* MST_DATA */
-
- case MST_SYSEX:
- if (data == 0xf7) { /* Sysex end */
- inc->m_state = MST_INIT;
- inc->m_left = 0;
- inc->m_ptr = 0;
- }
- break; /* MST_SYSEX */
-
- default:
- printf("MIDI%d: Unexpected state %d (%02x)\n", orig_dev, inc->m_state,
- (int) data);
- inc->m_state = MST_INIT;
- }
-}
-
-static void
-leave_sysex(int dev)
-{
- int orig_dev = synth_devs[dev]->midi_dev;
- int timeout = 0;
-
- if (!sysex_state[dev])
- return;
-
- sysex_state[dev] = 0;
-
- while (!midi_devs[orig_dev]->putc(orig_dev, 0xf7) && timeout < 1000)
- timeout++;
-
- sysex_state[dev] = 0;
-}
-
-static void
-midi_synth_output(int dev)
-{
- /*
- * Currently NOP
- */
-}
-
-int
-midi_synth_ioctl(int dev, unsigned int cmd, ioctl_arg arg)
-{
- /*
- * int orig_dev = synth_devs[dev]->midi_dev;
- */
-
- switch (cmd) {
-
- case SNDCTL_SYNTH_INFO:
- bcopy(synth_devs[dev]->info, &(((char *) arg)[0]), sizeof(struct synth_info));
- return 0;
- break;
-
- case SNDCTL_SYNTH_MEMAVL:
- return 0x7fffffff;
- break;
-
- default:
- return -(EINVAL);
- }
-}
-
-int
-midi_synth_kill_note(int dev, int channel, int note, int velocity)
-{
- int orig_dev = synth_devs[dev]->midi_dev;
- int msg, chn;
-
- if (note < 0 || note > 127)
- return 0;
- if (channel < 0 || channel > 15)
- return 0;
- RANGE (velocity, 0, 127 ) ;
- leave_sysex(dev);
-
- msg = prev_out_status[orig_dev] & 0xf0;
- chn = prev_out_status[orig_dev] & 0x0f;
-
- if (chn == channel && ((msg == 0x90 && velocity == 64) || msg == 0x80)) { /* Use running status */
- if (!prefix_cmd(orig_dev, note))
- return 0;
-
- midi_outc(orig_dev, note);
-
- if (msg == 0x90)/* Running status = Note on */
- midi_outc(orig_dev, 0); /* Note on with velocity 0 == note off */
- else
- midi_outc(orig_dev, velocity);
- } else {
- if (velocity == 64) {
- if (!prefix_cmd(orig_dev, 0x90 | (channel & 0x0f)))
- return 0;
- midi_outc(orig_dev, 0x90 | (channel & 0x0f)); /* Note on */
- midi_outc(orig_dev, note);
- midi_outc(orig_dev, 0); /* Zero G */
- } else {
- if (!prefix_cmd(orig_dev, 0x80 | (channel & 0x0f)))
- return 0;
- midi_outc(orig_dev, 0x80 | (channel & 0x0f)); /* Note off */
- midi_outc(orig_dev, note);
- midi_outc(orig_dev, velocity);
- }
- }
-
- return 0;
-}
-
-int
-midi_synth_set_instr(int dev, int channel, int instr_no)
-{
- int orig_dev = synth_devs[dev]->midi_dev;
-
- if (instr_no < 0 || instr_no > 127)
- return 0;
- if (channel < 0 || channel > 15)
- return 0;
-
- leave_sysex(dev);
-
- if (!prefix_cmd(orig_dev, 0xc0 | (channel & 0x0f)))
- return 0;
- midi_outc(orig_dev, 0xc0 | (channel & 0x0f)); /* Program change */
- midi_outc(orig_dev, instr_no);
-
- return 0;
-}
-
-int
-midi_synth_start_note(int dev, int channel, int note, int velocity)
-{
- int orig_dev = synth_devs[dev]->midi_dev;
- int msg, chn;
-
- if (note < 0 || note > 127)
- return 0;
- if (channel < 0 || channel > 15)
- return 0;
- RANGE (velocity, 0, 127 );
- leave_sysex(dev);
-
- msg = prev_out_status[orig_dev] & 0xf0;
- chn = prev_out_status[orig_dev] & 0x0f;
-
- if (chn == channel && msg == 0x90) { /* Use running status */
- if (!prefix_cmd(orig_dev, note))
- return 0;
- midi_outc(orig_dev, note);
- midi_outc(orig_dev, velocity);
- } else {
- if (!prefix_cmd(orig_dev, 0x90 | (channel & 0x0f)))
- return 0;
- midi_outc(orig_dev, 0x90 | (channel & 0x0f)); /* Note on */
- midi_outc(orig_dev, note);
- midi_outc(orig_dev, velocity);
- }
- return 0;
-}
-
-void
-midi_synth_reset(int dev)
-{
-
- leave_sysex(dev);
-}
-
-int
-midi_synth_open(int dev, int mode)
-{
- int orig_dev = synth_devs[dev]->midi_dev;
- int err;
- unsigned long flags;
- struct midi_input_info *inc;
-
- if (orig_dev < 0 || orig_dev > num_midis)
- return -(ENXIO);
-
- midi2synth[orig_dev] = dev;
- sysex_state[dev] = 0;
- prev_out_status[orig_dev] = 0;
-
- if ((err = midi_devs[orig_dev]->open(orig_dev, mode,
- midi_synth_input, midi_synth_output)) < 0)
- return err;
-
- inc = &midi_devs[orig_dev]->in_info;
-
- flags = splhigh();
- inc->m_busy = 0;
- inc->m_state = MST_INIT;
- inc->m_ptr = 0;
- inc->m_left = 0;
- inc->m_prev_status = 0x00;
- splx(flags);
-
- sysex_sleep_flag.aborting = 0;
- sysex_sleep_flag.mode = WK_NONE;
-
- return 1;
-}
-
-void
-midi_synth_close(int dev)
-{
- int orig_dev = synth_devs[dev]->midi_dev;
-
- leave_sysex(dev);
-
- /*
- * Shut up the synths by sending just single active sensing message.
- */
- midi_devs[orig_dev]->putc(orig_dev, 0xfe);
-
- midi_devs[orig_dev]->close(orig_dev);
-}
-
-void
-midi_synth_hw_control(int dev, unsigned char *event)
-{
-}
-
-int
-midi_synth_load_patch(int dev, int format, snd_rw_buf * addr,
- int offs, int count, int pmgr_flag)
-{
- int orig_dev = synth_devs[dev]->midi_dev;
-
- struct sysex_info sysex;
- int i;
- unsigned long left, src_offs, eox_seen = 0;
- int first_byte = 1;
- int hdr_size = offsetof(struct sysex_info, data);
-
- leave_sysex(dev);
-
- if (!prefix_cmd(orig_dev, 0xf0))
- return 0;
-
- if (format != SYSEX_PATCH) {
- printf("MIDI Error: Invalid patch format (key) 0x%x\n", format);
- return -(EINVAL);
- }
- if (count < hdr_size) {
- printf("MIDI Error: Patch header too short\n");
- return -(EINVAL);
- }
- count -= hdr_size;
-
- /*
- * Copy the header from user space but ignore the first bytes which
- * have been transferred already.
- */
-
-
- if (uiomove(&((char *) &sysex)[offs], hdr_size - offs, addr)) {
- printf("sb: Bad copyin()!\n");
- };
-
- if (count < sysex.len) {
- printf("MIDI Warning: Sysex record too short (%d<%d)\n",
- count, (int) sysex.len);
- sysex.len = count;
- }
- left = sysex.len;
- src_offs = 0;
-
- sysex_sleep_flag.aborting = 0;
- sysex_sleep_flag.mode = WK_NONE;
-
- for (i = 0; i < left && !(sysex_sleep_flag.aborting); i++) {
- unsigned char data;
-
- uiomove((char *) &(data), 1, addr);
-
- eox_seen = (i > 0 && data & 0x80); /* End of sysex */
-
- if (eox_seen && data != 0xf7)
- data = 0xf7;
-
- if (i == 0) {
- if (data != 0xf0) {
- printf("Error: Sysex start missing\n");
- return -(EINVAL);
- }
- }
- while (!midi_devs[orig_dev]->putc(orig_dev,
- (unsigned char) (data & 0xff)) &&
- !(sysex_sleep_flag.aborting)) {
- int chn;
-
-
- sysex_sleeper = &chn;
- DO_SLEEP(chn, sysex_sleep_flag, 1);
-
- }; /* Wait for timeout */
-
- if (!first_byte && data & 0x80)
- return 0;
- first_byte = 0;
- }
-
- if (!eox_seen)
- midi_outc(orig_dev, 0xf7);
- return 0;
-}
-
-void
-midi_synth_panning(int dev, int channel, int pressure)
-{
-}
-
-void
-midi_synth_aftertouch(int dev, int channel, int pressure)
-{
- int orig_dev = synth_devs[dev]->midi_dev;
- int msg, chn;
-
- if (pressure < 0 || pressure > 127)
- return;
- if (channel < 0 || channel > 15)
- return;
-
- leave_sysex(dev);
-
- msg = prev_out_status[orig_dev] & 0xf0;
- chn = prev_out_status[orig_dev] & 0x0f;
-
- if (msg != 0xd0 || chn != channel) { /* Test for running status */
- if (!prefix_cmd(orig_dev, 0xd0 | (channel & 0x0f)))
- return;
- midi_outc(orig_dev, 0xd0 | (channel & 0x0f)); /* Channel pressure */
- } else if (!prefix_cmd(orig_dev, pressure))
- return;
-
- midi_outc(orig_dev, pressure);
-}
-
-void
-midi_synth_controller(int dev, int channel, int ctrl_num, int value)
-{
- int orig_dev = synth_devs[dev]->midi_dev;
- int chn, msg;
-
- if (ctrl_num < 1 || ctrl_num > 127)
- return; /* NOTE! Controller # 0 ignored */
- if (channel < 0 || channel > 15)
- return;
-
- leave_sysex(dev);
-
- msg = prev_out_status[orig_dev] & 0xf0;
- chn = prev_out_status[orig_dev] & 0x0f;
-
- if (msg != 0xb0 || chn != channel) {
- if (!prefix_cmd(orig_dev, 0xb0 | (channel & 0x0f)))
- return;
- midi_outc(orig_dev, 0xb0 | (channel & 0x0f));
- } else if (!prefix_cmd(orig_dev, ctrl_num))
- return;
-
- midi_outc(orig_dev, ctrl_num);
- midi_outc(orig_dev, value & 0x7f);
-}
-
-int
-midi_synth_patchmgr(int dev, struct patmgr_info * rec)
-{
- return -(EINVAL);
-}
-
-void
-midi_synth_bender(int dev, int channel, int value)
-{
- int orig_dev = synth_devs[dev]->midi_dev;
- int msg, prev_chn;
-
- if (channel < 0 || channel > 15)
- return;
-
- if (value < 0 || value > 16383)
- return;
-
- leave_sysex(dev);
-
- msg = prev_out_status[orig_dev] & 0xf0;
- prev_chn = prev_out_status[orig_dev] & 0x0f;
-
- if (msg != 0xd0 || prev_chn != channel) { /* Test for running status */
- if (!prefix_cmd(orig_dev, 0xe0 | (channel & 0x0f)))
- return;
- midi_outc(orig_dev, 0xe0 | (channel & 0x0f));
- } else if (!prefix_cmd(orig_dev, value & 0x7f))
- return;
-
- midi_outc(orig_dev, value & 0x7f);
- midi_outc(orig_dev, (value >> 7) & 0x7f);
-}
-
-void
-midi_synth_setup_voice(int dev, int voice, int channel)
-{
-}
-
-int
-midi_synth_send_sysex(int dev, unsigned char *bytes, int len)
-{
- int orig_dev = synth_devs[dev]->midi_dev;
- int i;
-
- for (i = 0; i < len; i++) {
- switch (bytes[i]) {
- case 0xf0: /* Start sysex */
- if (!prefix_cmd(orig_dev, 0xf0))
- return 0;
- sysex_state[dev] = 1;
- break;
-
- case 0xf7: /* End sysex */
- if (!sysex_state[dev]) /* Orphan sysex end */
- return 0;
- sysex_state[dev] = 0;
- break;
-
- default:
- if (!sysex_state[dev])
- return 0;
-
- if (bytes[i] & 0x80) { /* Error. Another message before sysex end */
- bytes[i] = 0xf7; /* Sysex end */
- sysex_state[dev] = 0;
- }
- }
-
- if (!midi_devs[orig_dev]->putc(orig_dev, bytes[i])) {
- /*
- * Hardware leve buffer is full. Abort the sysex message.
- */
-
- int timeout = 0;
-
- bytes[i] = 0xf7;
- sysex_state[dev] = 0;
-
- while (!midi_devs[orig_dev]->putc(orig_dev, bytes[i]) &&
- timeout < 1000)
- timeout++;
- }
- if (!sysex_state[dev])
- return 0;
- }
-
- return 0;
-}
-#endif
OpenPOWER on IntegriCloud