simplistic external for reading audio/midi settings

svn path=/trunk/externals/iem/mediasettings/; revision=14718

1 files changed, 338 insertions, 0 deletions

diff --git a/midisettings.c b/midisettings.c
new file mode 100644
index 0000000..b6bf728
--- /dev/null
+++ b/midisettings.c
@@ -0,0 +1,338 @@
+/******************************************************
+ *
+ * midisettings - get/set midi preferences from within Pd-patches
+ * Copyright (C) 2010 IOhannes m zmölnig
+ *
+ *   forum::für::umläute
+ *
+ *   institute of electronic music and acoustics (iem)
+ *   university of music and dramatic arts, graz (kug)
+ *
+ *
+ ******************************************************
+ *
+ * license: GNU General Public License v.3 or later
+ *
+ ******************************************************/
+#include "m_pd.h"
+#include "s_stuff.h"
+#include <stdio.h>
+
+#define MAXNDEV 20
+#define DEVDESCSIZE 80
+#ifndef MAXMIDIINDEV
+# define MAXMIDIINDEV 4
+#endif
+#ifndef MAXMIDIOUTDEV
+# define MAXMIDIOUTDEV 4
+#endif
+extern int sys_midiapi;
+static t_class *midisettings_class;
+
+typedef struct _as_apis {
+  t_symbol*name;
+  int      id;
+
+  struct _as_apis *next;
+} t_as_apis;
+
+
+t_as_apis*as_findapi(t_as_apis*apis, const t_symbol*name) {
+  while(apis) {
+    if(name==apis->name)return apis;
+    apis=apis->next;
+  }
+  return NULL;
+}
+
+t_as_apis*as_findapiid(t_as_apis*apis, const int id) {
+  while(apis) {
+    if(id==apis->id)return apis;
+    apis=apis->next;
+  }
+  return NULL;
+}
+
+t_as_apis*as_addapi(t_as_apis*apis, t_symbol*name, int id, int overwrite) {
+  t_as_apis*api=as_findapi(apis, name);
+
+  if(api) {
+    if(overwrite) {
+      api->name=name;
+      api->id  =id;
+    }
+    return apis;
+  }
+
+  api=(t_as_apis*)getbytes(sizeof(t_as_apis));
+  api->name=name;
+  api->id=id;
+  api->next=apis;
+
+  return api;
+}
+
+t_as_apis*as_apiparse(t_as_apis*apis, const char*buf) {
+  t_as_apis*api=apis;
+
+  int start=-1;
+  int stop =-1;
+
+  unsigned int index=0;
+  int depth=0;
+  const char*s;
+  char substring[MAXPDSTRING];
+
+  for(index=0, s=buf; 0!=*s; s++, index++) {
+    if('{'==*s) {
+      start=index;
+      depth++;
+    }
+    if('}'==*s) {
+      depth--;
+      stop=index;
+
+      if(start>=0 && start<stop) {
+        char apiname[MAXPDSTRING];
+        int  apiid;
+        int length=stop-start;
+        if(length>=MAXPDSTRING)length=MAXPDSTRING-1;
+        snprintf(substring, length, "%s", buf+start+1);
+        
+        if(2==sscanf(substring, "%s %d", apiname, &apiid)) {
+          apis=as_addapi(apis, gensym(apiname), apiid, 0);
+        } else {
+          post("unparseable: '%s'", substring);
+        }
+      }
+      start=-1;
+      stop=-1;
+    }
+  }
+
+  return apis;
+}
+
+static t_as_apis*APIS=NULL;
+
+static t_symbol*as_getapiname(const int id) {
+  t_as_apis*api=as_findapiid(APIS, id);
+  if(api) {
+    return api->name;
+  } else {
+    return gensym("<unknown>");
+  }
+}
+
+static int as_getapiid(const t_symbol*id) {
+  t_as_apis*api=as_findapi(APIS, id);
+  if(api) {
+    return api->id;
+  }
+  return -1; /* unknown */
+}
+
+typedef struct _midisettings
+{
+  t_object x_obj;
+  t_outlet*x_info;
+} t_midisettings;
+
+
+static void midisettings_listdevices(t_midisettings *x)
+{
+  int i;
+
+  char indevlist[MAXNDEV][DEVDESCSIZE], outdevlist[MAXNDEV][DEVDESCSIZE];
+  int indevs = 0, outdevs = 0;
+
+  t_atom atoms[3];
+ 
+  sys_get_midi_devs((char*)indevlist, &indevs, 
+                     (char*)outdevlist, &outdevs, 
+                     MAXNDEV, DEVDESCSIZE);
+
+  SETSYMBOL (atoms+0, gensym("api"));
+  SETSYMBOL (atoms+1, as_getapiname(sys_midiapi));
+  outlet_anything(x->x_info, gensym("device"), 2, atoms);
+
+  SETSYMBOL(atoms+0, gensym("in"));
+
+  SETSYMBOL(atoms+1, gensym("devices"));
+  SETFLOAT (atoms+2, (t_float)indevs);
+  outlet_anything(x->x_info, gensym("device"), 3, atoms);
+
+  for(i=0; i<indevs; i++) {
+    SETFLOAT (atoms+1, (t_float)i);
+    SETSYMBOL(atoms+2, gensym(indevlist[i]));
+    outlet_anything(x->x_info, gensym("device"), 3, atoms);
+  }
+
+  SETSYMBOL(atoms+0, gensym("out"));
+
+  SETSYMBOL(atoms+1, gensym("devices"));
+  SETFLOAT (atoms+2, (t_float)outdevs);
+  outlet_anything(x->x_info, gensym("device"), 2, atoms);
+
+  for(i=0; i<outdevs; i++) {
+    SETFLOAT (atoms+1, (t_float)i);
+    SETSYMBOL(atoms+2, gensym(outdevlist[i]));
+    outlet_anything(x->x_info, gensym("device"), 3, atoms);
+  }
+}
+
+static void midisettings_listparams(t_midisettings *x) {
+  int i;
+  t_atom atoms[4];
+
+  int nmidiindev=1, midiindev[MAXMIDIINDEV];
+  int nmidioutdev, midioutdev[MAXMIDIOUTDEV];
+  sys_get_midi_params(&nmidiindev, midiindev, 
+                      &nmidioutdev, midioutdev);
+  
+  SETSYMBOL(atoms+0, gensym("in"));
+
+  SETSYMBOL(atoms+1, gensym("devices"));
+  SETFLOAT (atoms+2, (t_float)nmidiindev);
+  outlet_anything(x->x_info, gensym("params"), 3, atoms);
+
+  for(i=0; i<nmidiindev; i++) {
+    SETFLOAT (atoms+1, (t_float)midiindev[i]);
+    outlet_anything(x->x_info, gensym("params"), 2, atoms);
+  }
+
+  SETSYMBOL(atoms+0, gensym("out"));
+
+  SETSYMBOL(atoms+1, gensym("devices"));
+  SETFLOAT (atoms+2, (t_float)nmidioutdev);
+  outlet_anything(x->x_info, gensym("params"), 3, atoms);
+
+  for(i=0; i<nmidioutdev; i++) {
+    SETFLOAT (atoms+1, (t_float)midioutdev[i]);
+    outlet_anything(x->x_info, gensym("params"), 2, atoms);
+  }
+}
+
+/*
+ * TODO: provide a nicer interface than the "pd audio-dialog"
+ */
+static void midisettings_set(t_midisettings *x, 
+                             t_symbol*s, 
+                             int argc, t_atom*argv) {
+/*
+     "pd audio-dialog ..."
+     #00: indev[0]
+     #01: indev[1]
+     #02: indev[2]
+     #03: indev[3]
+     #04: outdev[0]
+     #05: outdev[1]
+     #06: outdev[2]
+     #07: outdev[3]
+     #08: alsadevin
+     #09: alsadevout
+*/
+/*
+  PLAN:
+    several messages that accumulate to a certain settings, and then "apply" them
+*/
+
+       
+}
+
+
+
+static void midisettings_testdevices(t_midisettings *x)
+{
+  int i;
+
+  char indevlist[MAXNDEV][DEVDESCSIZE], outdevlist[MAXNDEV][DEVDESCSIZE];
+  int indevs = 0, outdevs = 0;
+ 
+  sys_get_midi_devs((char*)indevlist, &indevs, (char*)outdevlist, &outdevs, MAXNDEV, DEVDESCSIZE);
+
+  post("%d midi indevs", indevs);
+  for(i=0; i<indevs; i++)
+    post("\t#%02d: %s", i, indevlist[i]);
+
+  post("%d midi outdevs", outdevs);
+  for(i=0; i<outdevs; i++)
+    post("\t#%02d: %s", i, outdevlist[i]);
+
+  endpost();
+  int nmidiindev, midiindev[MAXMIDIINDEV];
+  int nmidioutdev, midioutdev[MAXMIDIOUTDEV];
+  sys_get_midi_params(&nmidiindev, midiindev,
+                       &nmidioutdev, midioutdev);
+  
+  post("%d midiindev (parms)", nmidiindev);
+  for(i=0; i<nmidiindev; i++) {
+    post("\t#%02d: %d %d", i, midiindev[i]);
+  }
+  post("%d midioutdev (parms)", nmidioutdev);
+  for(i=0; i<nmidioutdev; i++) {
+    post("\t#%02d: %d %d", i, midioutdev[i]);
+  }
+}
+/*
+ */
+static void midisettings_listapis(t_midisettings *x)
+{
+
+  t_as_apis*api=NULL;
+
+  for(api=APIS; api; api=api->next) {
+    t_atom ap[1];
+    SETSYMBOL(ap, api->name);
+    outlet_anything(x->x_info, gensym("driver"), 1, ap);    
+  }
+}
+
+static void midisettings_free(t_midisettings *x){
+
+}
+
+
+static void *midisettings_new(void)
+{
+  t_midisettings *x = (t_midisettings *)pd_new(midisettings_class);
+  x->x_info=outlet_new(&x->x_obj, 0);
+
+  char buf[MAXPDSTRING];
+  sys_get_midi_apis(buf);
+
+  APIS=as_apiparse(APIS, buf);
+
+  //  sys_get_midi_apis(buf);
+  //  APIS=as_apiparse(APIS, buf);
+
+
+  return (x);
+}
+
+
+void midisettings_setup(void)
+{
+  post("midisettings: midi settings manager");
+  post("          Copyright (C) 2010 IOhannes m zmoelnig");
+  post("          for the IntegraLive project");
+  post("          institute of electronic music and acoustics (iem)");
+  post("          published under the GNU General Public License version 3 or later");
+#ifdef MIDISETTINGS_VERSION
+  startpost("          version:"MIDISETTINGS_VERSION);
+#endif
+  post("\tcompiled: "__DATE__"");
+
+  midisettings_class = class_new(gensym("midisettings"), (t_newmethod)midisettings_new, (t_method)midisettings_free,
+			     sizeof(t_midisettings), 0, 0);
+
+  class_addbang(midisettings_class, (t_method)midisettings_listapis);
+  class_addmethod(midisettings_class, (t_method)midisettings_listapis, gensym("listapis"), A_NULL);
+  class_addmethod(midisettings_class, (t_method)midisettings_listdevices, gensym("listdevices"), A_NULL);
+ class_addmethod(midisettings_class, (t_method)midisettings_listparams, gensym("listparams"), A_NULL);
+
+
+  class_addmethod(midisettings_class, (t_method)midisettings_testdevices, gensym("testdevices"), A_NULL);
+
+}
+