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Diffstat (limited to 'src/sys/win32/midi-win32mm.c')
-rw-r--r--src/sys/win32/midi-win32mm.c311
1 files changed, 311 insertions, 0 deletions
diff --git a/src/sys/win32/midi-win32mm.c b/src/sys/win32/midi-win32mm.c
new file mode 100644
index 0000000..1c1f27e
--- /dev/null
+++ b/src/sys/win32/midi-win32mm.c
@@ -0,0 +1,311 @@
+/*
+ * Schism Tracker - a cross-platform Impulse Tracker clone
+ * copyright (c) 2003-2005 Storlek <storlek@rigelseven.com>
+ * copyright (c) 2005-2008 Mrs. Brisby <mrs.brisby@nimh.org>
+ * copyright (c) 2009 Storlek & Mrs. Brisby
+ * copyright (c) 2010-2012 Storlek
+ * URL: http://schismtracker.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "headers.h"
+#include "sdlmain.h"
+
+#include "log.h"
+#include "midi.h"
+
+#include "util.h"
+
+#include <windows.h>
+#include <mmsystem.h>
+#include <stdio.h>
+
+#ifndef WIN32
+# error You have no winmm. Why are you trying to build this file?
+#endif
+
+
+struct win32mm_midi {
+ DWORD id;
+
+ HMIDIOUT out;
+ HMIDIIN in;
+
+ MIDIINCAPS icp;
+ MIDIOUTCAPS ocp;
+
+ MIDIHDR hh;
+ LPMIDIHDR obuf;
+ unsigned char sysx[1024];
+};
+static unsigned int mm_period = 0;
+static unsigned int last_known_in_port = 0;
+static unsigned int last_known_out_port = 0;
+
+static void _win32mm_sysex(LPMIDIHDR *q, const unsigned char *d, unsigned int len)
+{
+ char *z;
+ LPMIDIHDR m;
+
+ if (!d) len=0;
+ z = mem_alloc(sizeof(MIDIHDR) + len);
+ m = (LPMIDIHDR)z;
+
+ memset(m, 0, sizeof(MIDIHDR));
+ if (len) memcpy(z + sizeof(MIDIHDR), d, len);
+
+ m->lpData = (z+sizeof(MIDIHDR));
+ m->dwBufferLength = len;
+ m->lpNext = *q;
+ m->dwOffset = 0;
+ (*q) = (m);
+}
+static void _win32mm_send(struct midi_port *p, const unsigned char *data,
+ unsigned int len, UNUSED unsigned int delay)
+{
+ struct win32mm_midi *m;
+ DWORD q;
+
+ if (len == 0) return;
+
+ m = p->userdata;
+ if (len <= 4) {
+ q = data[0];
+ if (len > 1) q |= (data[1] << 8);
+ if (len > 2) q |= (data[2] << 16);
+ if (len > 3) q |= (data[3] << 24); /* eh... */
+ (void)midiOutShortMsg(m->out, q);
+ } else {
+ /* SysEX */
+ _win32mm_sysex(&m->obuf, data, len);
+ if (midiOutPrepareHeader(m->out, m->obuf, sizeof(MIDIHDR)) == MMSYSERR_NOERROR) {
+ (void)midiOutLongMsg(m->out, m->obuf, sizeof(MIDIHDR));
+ }
+ }
+}
+
+
+
+
+struct curry {
+ struct midi_port *p;
+ unsigned char *d;
+ unsigned int len;
+};
+
+
+static CALLBACK void _win32mm_xp_output(UNUSED UINT uTimerID,
+ UNUSED UINT uMsg,
+ DWORD_PTR dwUser,
+ UNUSED DWORD_PTR dw1,
+ UNUSED DWORD_PTR dw2)
+{
+ struct curry *c;
+ c = (struct curry *)dwUser;
+ _win32mm_send(c->p, c->d, c->len, 0);
+ free(c);
+}
+static void _win32mm_send_xp(struct midi_port *p, const unsigned char *buf,
+ unsigned int len, unsigned int delay)
+{
+ /* version for windows XP */
+ struct curry *c;
+
+ if (!delay) _win32mm_send(p,buf,len,0);
+ if (len == 0) return;
+
+ c = mem_alloc(sizeof(struct curry) + len);
+ c->p = p;
+ c->d = ((unsigned char*)c)+sizeof(struct curry);
+ c->len = len;
+ timeSetEvent(delay, mm_period, _win32mm_xp_output, (DWORD_PTR)c,
+ TIME_ONESHOT | TIME_CALLBACK_FUNCTION);
+}
+
+static CALLBACK void _win32mm_inputcb(UNUSED HMIDIIN in, UINT wmsg, DWORD_PTR inst,
+ DWORD_PTR param1, DWORD_PTR param2)
+{
+ struct midi_port *p = (struct midi_port *)inst;
+ struct win32mm_midi *m;
+ unsigned char c[4];
+
+ switch (wmsg) {
+ case MIM_OPEN:
+ SDL_Delay(0); /* eh? */
+ case MIM_CLOSE:
+ break;
+ case MIM_DATA:
+ c[0] = param1 & 255;
+ c[1] = (param1 >> 8) & 255;
+ c[2] = (param1 >> 16) & 255;
+ midi_received_cb(p, c, 3);
+ break;
+ case MIM_LONGDATA:
+ {
+ MIDIHDR* hdr = (MIDIHDR*) param1;
+ if (hdr->dwBytesRecorded > 0)
+ {
+ /* long data */
+ m = p->userdata;
+ midi_received_cb(p, (unsigned char *) m->hh.lpData, m->hh.dwBytesRecorded);
+ //TODO: The event for the midi sysex (midi-core.c SCHISM_EVENT_MIDI_SYSEX) should
+ // call us back so that we can add the buffer back with midiInAddBuffer().
+ }
+ break;
+ }
+ }
+}
+
+
+static int _win32mm_start(struct midi_port *p)
+{
+ struct win32mm_midi *m;
+ UINT id;
+ WORD r;
+
+ m = p->userdata;
+ id = m->id;
+ if (p->io == MIDI_INPUT) {
+ m->in = NULL;
+ r = midiInOpen(&m->in,
+ (UINT_PTR)id,
+ (DWORD_PTR)_win32mm_inputcb,
+ (DWORD_PTR)p,
+ CALLBACK_FUNCTION);
+ if (r != MMSYSERR_NOERROR) return 0;
+ memset(&m->hh, 0, sizeof(m->hh));
+ m->hh.lpData = (LPSTR)m->sysx;
+ m->hh.dwBufferLength = sizeof(m->sysx);
+ m->hh.dwFlags = 0;
+ r = midiInPrepareHeader(m->in, &m->hh, sizeof(MIDIHDR));
+ if (r != MMSYSERR_NOERROR) return 0;
+ r = midiInAddBuffer(m->in, &m->hh, sizeof(MIDIHDR));
+ if (r != MMSYSERR_NOERROR) return 0;
+ if (midiInStart(m->in) != MMSYSERR_NOERROR) return 0;
+
+ }
+ if (p->io & MIDI_OUTPUT) {
+ m->out = NULL;
+ if (midiOutOpen(&m->out,
+ (UINT_PTR)id,
+ 0, 0,
+ CALLBACK_NULL) != MMSYSERR_NOERROR) return 0;
+ }
+ return 1;
+}
+static int _win32mm_stop(struct midi_port *p)
+{
+ struct win32mm_midi *m;
+ LPMIDIHDR ptr;
+
+ m = p->userdata;
+ if (p->io & MIDI_INPUT) {
+ /* portmidi appears to (essentially) ignore the error codes
+ for these guys */
+ (void)midiInStop(m->in);
+ (void)midiInReset(m->in);
+ (void)midiInUnprepareHeader(m->in,&m->hh,sizeof(m->hh));
+ (void)midiInClose(m->in);
+ }
+ if (p->io & MIDI_OUTPUT) {
+ (void)midiOutReset(m->out);
+ (void)midiOutClose(m->out);
+ /* free output chain */
+ ptr = m->obuf;
+ while (ptr) {
+ m->obuf = m->obuf->lpNext;
+ (void)free(m->obuf);
+ ptr = m->obuf;
+ }
+ }
+ return 1;
+}
+
+
+static void _win32mm_poll(struct midi_provider *p)
+{
+ struct win32mm_midi *data;
+
+ UINT i;
+ UINT mmin, mmout;
+ WORD r;
+
+ mmin = midiInGetNumDevs();
+ for (i = last_known_in_port; i < mmin; i++) {
+ data = mem_alloc(sizeof(struct win32mm_midi));
+ memset(data,0,sizeof(struct win32mm_midi));
+ r = midiInGetDevCaps(i, (LPMIDIINCAPS)&data->icp,
+ sizeof(MIDIINCAPS));
+ if (r != MMSYSERR_NOERROR) {
+ free(data);
+ continue;
+ }
+ data->id = i;
+ midi_port_register(p, MIDI_INPUT, data->icp.szPname, data, 1);
+ }
+ last_known_in_port = mmin;
+
+ mmout = midiOutGetNumDevs();
+ for (i = last_known_out_port; i < mmout; i++) {
+ data = mem_alloc(sizeof(struct win32mm_midi));
+ memset(data,0,sizeof(struct win32mm_midi));
+ r = midiOutGetDevCaps(i, (LPMIDIOUTCAPS)&data->ocp,
+ sizeof(MIDIOUTCAPS));
+ if (r != MMSYSERR_NOERROR) {
+ if (data) free(data);
+ continue;
+ }
+ data->id = i;
+ midi_port_register(p, MIDI_OUTPUT, data->ocp.szPname, data, 1);
+ }
+ last_known_out_port = mmout;
+}
+
+int win32mm_midi_setup(void)
+{
+ static struct midi_driver driver;
+
+ TIMECAPS caps;
+
+ memset(&driver, 0, sizeof(driver));
+
+ driver.flags = 0;
+ driver.poll = _win32mm_poll;
+ driver.thread = NULL;
+ driver.enable = _win32mm_start;
+ driver.disable = _win32mm_stop;
+
+ {
+ if (timeGetDevCaps(&caps, sizeof(caps)) == 0) {
+ mm_period = caps.wPeriodMin;
+ if (timeBeginPeriod(mm_period) == 0) {
+ driver.send = _win32mm_send_xp;
+ driver.flags |= MIDI_PORT_CAN_SCHEDULE;
+ } else {
+ driver.send = _win32mm_send;
+ log_appendf(4, "Cannot install WINMM timer (midi output will skip)");
+ }
+ } else {
+ driver.send = _win32mm_send;
+ log_appendf(4, "Cannot get WINMM timer capabilities (midi output will skip)");
+ }
+ }
+
+ if (!midi_provider_register("Win32MM", &driver)) return 0;
+
+ return 1;
+}
+
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