test/rawmidi.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <ctype.h>
   4 #include "../include/asoundlib.h"
   5 #include <signal.h>
   6
   7 static void usage(void)
   8 {
   9         fprintf(stderr, "usage: rawmidi [options]\n");
  10         fprintf(stderr, "  options:\n");
  11         fprintf(stderr, "    -v: verbose mode\n");
  12         fprintf(stderr, "    -i device-id : test ALSA input device\n");
  13         fprintf(stderr, "    -o device-id : test ALSA output device\n");
  14         fprintf(stderr, "    -I node      : test input node\n");
  15         fprintf(stderr, "    -O node      : test output node\n");
  16         fprintf(stderr, "    -t: test midi thru\n");
  17         fprintf(stderr, "  example:\n");
  18         fprintf(stderr, "    rawmidi -i hw:0,0 -O /dev/midi1\n");
  19         fprintf(stderr, "    tests input for card 0, device 0, using snd_rawmidi API\n");
  20         fprintf(stderr, "    and /dev/midi1 using file descriptors\n");
  21 }
  22
  23 int stop=0;
  24
  25 void sighandler(int dum)
  26 {
  27         stop=1;
  28 }
  29
  30 int main(int argc,char** argv)
  31 {
  32         int i;
  33         int err;
  34         int thru=0;
  35         int verbose = 0;
  36         char *device_in = NULL;
  37         char *device_out = NULL;
  38         char *node_in = NULL;
  39         char *node_out = NULL;
  40
  41         int fd_in = -1,fd_out = -1;
  42         snd_rawmidi_t *handle_in = 0,*handle_out = 0;
  43
  44         if (argc==1) {
  45                 usage();
  46                 exit(0);
  47         }
  48
  49         for (i = 1 ; i<argc ; i++) {
  50                 if (argv[i][0]=='-') {
  51                         switch (argv[i][1]) {
  52                                 case 'h':
  53                                         usage();
  54                                         break;
  55                                 case 'v':
  56                                         verbose = 1;
  57                                         break;
  58                                 case 't':
  59                                         thru = 1;
  60                                         break;
  61                                 case 'i':
  62                                         if (i + 1 < argc)
  63                                                 device_in = argv[++i];
  64                                         break;
  65                                 case 'I':
  66                                         if (i + 1 < argc)
  67                                                 node_in = argv[++i];
  68                                         break;
  69                                 case 'o':
  70                                         if (i + 1 < argc)
  71                                                 device_out = argv[++i];
  72                                         break;
  73                                 case 'O':
  74                                         if (i + 1 < argc)
  75                                                 node_out = argv[++i];
  76                                         break;
  77                         }
  78                 }
  79         }
  80
  81         if (verbose) {
  82                 fprintf(stderr,"Using: \n");
  83                 fprintf(stderr,"Input: ");
  84                 if (device_in) {
  85                         fprintf(stderr,"device %s\n",device_in);
  86                 }else if (node_in){
  87                         fprintf(stderr,"%s\n",node_in);
  88                 }else{
  89                         fprintf(stderr,"NONE\n");
  90                 }
  91                 fprintf(stderr,"Output: ");
  92                 if (device_out) {
  93                         fprintf(stderr,"device %s\n",device_out);
  94                 }else if (node_out){
  95                         fprintf(stderr,"%s\n",node_out);
  96                 }else{
  97                         fprintf(stderr,"NONE\n");
  98                 }
  99         }
 100
 101         if (device_in) {
 102                 err = snd_rawmidi_open(&handle_in,NULL,device_in,0);
 103                 if (err) {
 104                         fprintf(stderr,"snd_rawmidi_open %s failed: %d\n",device_in,err);
 105                 }
 106         }
 107         if (node_in && (!node_out || strcmp(node_out,node_in))) {
 108                 fd_in = open(node_in,O_RDONLY);
 109                 if (fd_in<0) {
 110                         fprintf(stderr,"open %s for input failed\n",node_in);
 111                 }
 112         }
 113
 114         signal(SIGINT,sighandler);
 115
 116         if (device_out) {
 117                 err = snd_rawmidi_open(NULL,&handle_out,device_out,0);
 118                 if (err) {
 119                         fprintf(stderr,"snd_rawmidi_open %s failed: %d\n",device_out,err);
 120                 }
 121         }
 122         if (node_out && (!node_in || strcmp(node_out,node_in))) {
 123                 fd_out = open(node_out,O_WRONLY);
 124                 if (fd_out<0) {
 125                         fprintf(stderr,"open %s for output failed\n",node_out);
 126                 }
 127         }
 128
 129         if (node_in && node_out && strcmp(node_out,node_in)==0) {
 130                 fd_in = fd_out = open(node_out,O_RDWR);
 131                 if (fd_out<0) {
 132                         fprintf(stderr,"open %s for input and output failed\n",node_out);
 133                 }
 134         }
 135
 136
 137
 138         if (!thru) {
 139                 if (handle_in || fd_in!=-1) {
 140                         fprintf(stderr,"Read midi in\n");
 141                         fprintf(stderr,"Press ctrl-c to stop\n");
 142                 }
 143
 144                 if (handle_in) {
 145                         unsigned char ch;
 146                         while (!stop) {
 147                                 snd_rawmidi_read(handle_in,&ch,1);
 148                                 if (verbose) {
 149                                         fprintf(stderr,"read %02x\n",ch);
 150                                 }
 151                         }
 152                 }
 153                 if (fd_in!=-1) {
 154                         unsigned char ch;
 155                         while (!stop) {
 156                                 read(fd_in,&ch,1);
 157                                 if (verbose) {
 158                                         fprintf(stderr,"read %02x\n",ch);
 159                                 }
 160                         }
 161                 }
 162
 163                 if (handle_out || fd_out!=-1) {
 164                         fprintf(stderr,"Writing note on / note off\n");
 165                 }
 166
 167                 if (handle_out) {
 168                         unsigned char ch;
 169                         ch=0x90; snd_rawmidi_write(handle_out,&ch,1);
 170                         ch=60;   snd_rawmidi_write(handle_out,&ch,1);
 171                         ch=100;  snd_rawmidi_write(handle_out,&ch,1);
 172                         snd_rawmidi_drain(handle_out);
 173                         sleep(1);
 174                         ch=0x90; snd_rawmidi_write(handle_out,&ch,1);
 175                         ch=60;   snd_rawmidi_write(handle_out,&ch,1);
 176                         ch=0;    snd_rawmidi_write(handle_out,&ch,1);
 177                         snd_rawmidi_drain(handle_out);
 178                 }
 179                 if (fd_out!=-1) {
 180                         unsigned char ch;
 181                         ch=0x90; write(fd_out,&ch,1);
 182                         ch=60;   write(fd_out,&ch,1);
 183                         ch=100;  write(fd_out,&ch,1);
 184                         sleep(1);
 185                         ch=0x90; write(fd_out,&ch,1);
 186                         ch=60;   write(fd_out,&ch,1);
 187                         ch=0;    write(fd_out,&ch,1);
 188                 }
 189         } else {
 190                 if ((handle_in || fd_in!=-1) && (handle_out || fd_out!=-1)) {
 191                         if (verbose) {
 192                                 fprintf(stderr,"Testing midi thru in\n");
 193                         }
 194                         while (!stop) {
 195                                 unsigned char ch;
 196
 197                                 if (handle_in) {
 198                                         snd_rawmidi_read(handle_in,&ch,1);
 199                                 }
 200                                 if (fd_in!=-1) {
 201                                         read(fd_in,&ch,1);
 202                                 }
 203                                 if (verbose) {
 204                                         fprintf(stderr,"thru: %02x\n",ch);
 205                                 }
 206
 207                                 if (handle_out) {
 208                                         snd_rawmidi_write(handle_out,&ch,1);
 209                                         snd_rawmidi_drain(handle_out);
 210                                 }
 211                                 if (fd_out!=-1) {
 212                                         write(fd_out,&ch,1);
 213                                 }
 214                         }
 215                 }else{
 216                                 fprintf(stderr,"Testing midi thru needs both input and output\n");
 217                                 exit(-1);
 218                 }
 219         }
 220
 221         if (verbose) {
 222                 fprintf(stderr,"Closing\n");
 223         }
 224
 225         if (handle_in) {
 226                 snd_rawmidi_drain(handle_in);
 227                 snd_rawmidi_close(handle_in);
 228         }
 229         if (handle_out) {
 230                 snd_rawmidi_drain(handle_out);
 231                 snd_rawmidi_close(handle_out);
 232         }
 233         if (fd_in!=-1) {
 234                 close(fd_in);
 235         }
 236         if (fd_out!=-1) {
 237                 close(fd_out);
 238         }
 239
 240         return 0;
 241 }