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envy24control midi updates

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I have enhanced the midi control of envy24control.

1) I have fixed midi feedback, where issuing a controller event resulted in
the controller value beeing sent to the midi port again.

2) I have added midi controllers for the "mute" buttons, which can now be
controller via midi.

3) and while rewriting the midi code to support the mute buttons several
off-by-one errors have been fixed.
From: Dirk Jagdmann <doj@cubic.org>
This commit is contained in:
Jaroslav Kysela 2005-07-26 11:37:11 +00:00
parent d8758b8482
commit 632a2ae802
3 changed files with 72 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

70
envy24control/midi.c
View file

@ -1,7 +1,7 @@
/*****************************************************************************
envy24control.c - Env24 chipset (ICE1712) control utility
midi controller code
(c) 2004 by Dirk Jagdmann <doj@cubic.org>
(c) 2004, 2005 by Dirk Jagdmann <doj@cubic.org>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
@ -27,13 +27,12 @@
static snd_seq_t *seq=0;
static int client, clientId, port, ch;
static char *portname=0, *appname=0;
static int nofeedback=-1;
static int maxstreams=0;
static uint8_t currentvalues[128];
static int currentvalue[128];
void midi_maxstreams(int m)
{
maxstreams=(m-1)*2;
maxstreams=m*2;
}
int midi_close()
@ -56,6 +55,10 @@ static void do_controller(int c, int v)
{
snd_seq_event_t ev;
if(!seq) return;
if(currentvalue[c]==v) return;
#if 0
fprintf(stderr, "do_controller(%i,%i)\n",c,v);
#endif
snd_seq_ev_clear(&ev);
snd_seq_ev_set_source(&ev, port);
snd_seq_ev_set_subs(&ev);
@ -63,21 +66,34 @@ static void do_controller(int c, int v)
snd_seq_ev_set_controller(&ev,ch,c,v);
snd_seq_event_output(seq, &ev);
snd_seq_drain_output(seq);
currentvalue[c]=v;
}
int midi_controller(int c, int v)
{
if(c==nofeedback) return 0;
if(c<0 || c>127) return 0;
v*=127; v/=96;
if(v<0) v=0;
if(v>127) v=127;
currentvalues[c]=v;
#if 0
fprintf(stderr, "midi_controller(%i,%i)\n",c,v);
#endif
if(currentvalue[c]==v-1 || currentvalue[c]==v-2) return 0; /* because of 96to127 conversion values can differ up to two integers */
do_controller(c,v);
return 0;
}
int midi_button(int b, int v)
{
if(b<0) return 0;
b+=maxstreams;
if(b>127) return 0;
do_controller(b, v?127:0);
return 0;
}
int midi_init(char *appname, int channel)
{
snd_seq_client_info_t *clientinfo;
@ -87,6 +103,9 @@ int midi_init(char *appname, int channel)
if(seq)
return 0;
for(npfd=0; npfd!=128; ++npfd)
currentvalue[npfd]=-1;
ch=channel;
if(snd_seq_open(&seq, "default", SND_SEQ_OPEN_DUPLEX, SND_SEQ_NONBLOCK) < 0)
@ -139,6 +158,7 @@ int midi_init(char *appname, int channel)
}
void mixer_adjust(GtkAdjustment *adj, gpointer data);
void mixer_set_mute(int stream, int left, int right);
void midi_process(gpointer data, gint source, GdkInputCondition condition)
{
@ -158,15 +178,27 @@ void midi_process(gpointer data, gint source, GdkInputCondition condition)
fprintf(stderr, "Channel %02d: Controller %03d: Value:%d\n",
ev->data.control.channel, ev->data.control.param, ev->data.control.value);
#endif
if(ev->data.control.channel == ch && ev->data.control.param < maxstreams)
if(ev->data.control.channel == ch)
{
int stream=ev->data.control.param+1;
long data=((stream/2)<<16)|(stream&1);
int v=ev->data.control.value; v*=96; v/=127;
gtk_adjustment_set_value(adj, 96-v);
nofeedback=ev->data.control.param;
mixer_adjust(adj, (gpointer)data);
nofeedback=-1;
currentvalue[ev->data.control.param]=ev->data.control.value;
if(ev->data.control.param < maxstreams)
{
int stream=ev->data.control.param;
long data=((stream/2+1)<<16)|(stream&1);
int v=ev->data.control.value; v*=96; v/=127;
gtk_adjustment_set_value(adj, 96-v);
mixer_adjust(adj, (gpointer)data);
}
else if(ev->data.control.param < maxstreams*2)
{
int b=ev->data.control.param-maxstreams;
int left=-1, right=-1;
if(b&1)
right=ev->data.control.value;
else
left=ev->data.control.value;
mixer_set_mute(b/2+1, left, right);
}
}
break;
@ -178,8 +210,14 @@ void midi_process(gpointer data, gint source, GdkInputCondition condition)
if(ev->data.connect.dest.client!=clientId)
{
int i;
for(i=0; i<sizeof(currentvalues); ++i)
do_controller(i, currentvalues[i]);
for(i=0; i!=128; ++i)
if(currentvalue[i] >= 0)
{
/* set currentvalue[i] to a fake value, so the check in do_controller does not trigger */
int v=currentvalue[i];
currentvalue[i]=-1;
do_controller(i, v);
}
}
break;
}