242 lines
5.1 KiB
C
242 lines
5.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include "../include/asoundlib.h"
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#include <signal.h>
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static void usage(void)
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{
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fprintf(stderr, "usage: rawmidi [options]\n");
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fprintf(stderr, " options:\n");
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fprintf(stderr, " -v: verbose mode\n");
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fprintf(stderr, " -i device-id : test ALSA input device\n");
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fprintf(stderr, " -o device-id : test ALSA output device\n");
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fprintf(stderr, " -I node : test input node\n");
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fprintf(stderr, " -O node : test output node\n");
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fprintf(stderr, " -t: test midi thru\n");
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fprintf(stderr, " example:\n");
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fprintf(stderr, " rawmidi -i hw:0,0 -O /dev/midi1\n");
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fprintf(stderr, " tests input for card 0, device 0, using snd_rawmidi API\n");
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fprintf(stderr, " and /dev/midi1 using file descriptors\n");
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}
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int stop=0;
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void sighandler(int dum)
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{
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stop=1;
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}
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int main(int argc,char** argv)
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{
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int i;
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int err;
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int thru=0;
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int verbose = 0;
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char *device_in = NULL;
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char *device_out = NULL;
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char *node_in = NULL;
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char *node_out = NULL;
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int fd_in = -1,fd_out = -1;
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snd_rawmidi_t *handle_in = 0,*handle_out = 0;
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if (argc==1) {
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usage();
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exit(0);
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}
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for (i = 1 ; i<argc ; i++) {
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if (argv[i][0]=='-') {
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switch (argv[i][1]) {
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case 'h':
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usage();
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break;
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case 'v':
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verbose = 1;
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break;
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case 't':
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thru = 1;
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break;
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case 'i':
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if (i + 1 < argc)
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device_in = argv[++i];
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break;
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case 'I':
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if (i + 1 < argc)
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node_in = argv[++i];
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break;
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case 'o':
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if (i + 1 < argc)
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device_out = argv[++i];
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break;
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case 'O':
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if (i + 1 < argc)
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node_out = argv[++i];
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break;
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}
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}
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}
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if (verbose) {
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fprintf(stderr,"Using: \n");
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fprintf(stderr,"Input: ");
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if (device_in) {
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fprintf(stderr,"device %s\n",device_in);
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}else if (node_in){
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fprintf(stderr,"%s\n",node_in);
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}else{
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fprintf(stderr,"NONE\n");
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}
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fprintf(stderr,"Output: ");
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if (device_out) {
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fprintf(stderr,"device %s\n",device_out);
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}else if (node_out){
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fprintf(stderr,"%s\n",node_out);
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}else{
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fprintf(stderr,"NONE\n");
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}
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}
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if (device_in) {
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err = snd_rawmidi_open(&handle_in,NULL,device_in,0);
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if (err) {
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fprintf(stderr,"snd_rawmidi_open %s failed: %d\n",device_in,err);
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}
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}
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if (node_in && (!node_out || strcmp(node_out,node_in))) {
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fd_in = open(node_in,O_RDONLY);
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if (fd_in<0) {
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fprintf(stderr,"open %s for input failed\n",node_in);
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}
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}
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signal(SIGINT,sighandler);
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if (device_out) {
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err = snd_rawmidi_open(NULL,&handle_out,device_out,0);
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if (err) {
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fprintf(stderr,"snd_rawmidi_open %s failed: %d\n",device_out,err);
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}
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}
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if (node_out && (!node_in || strcmp(node_out,node_in))) {
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fd_out = open(node_out,O_WRONLY);
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if (fd_out<0) {
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fprintf(stderr,"open %s for output failed\n",node_out);
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}
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}
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if (node_in && node_out && strcmp(node_out,node_in)==0) {
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fd_in = fd_out = open(node_out,O_RDWR);
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if (fd_out<0) {
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fprintf(stderr,"open %s for input and output failed\n",node_out);
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}
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}
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if (!thru) {
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if (handle_in || fd_in!=-1) {
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fprintf(stderr,"Read midi in\n");
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fprintf(stderr,"Press ctrl-c to stop\n");
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}
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if (handle_in) {
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unsigned char ch;
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while (!stop) {
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snd_rawmidi_read(handle_in,&ch,1);
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if (verbose) {
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fprintf(stderr,"read %02x\n",ch);
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}
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}
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}
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if (fd_in!=-1) {
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unsigned char ch;
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while (!stop) {
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read(fd_in,&ch,1);
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if (verbose) {
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fprintf(stderr,"read %02x\n",ch);
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}
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}
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}
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if (handle_out || fd_out!=-1) {
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fprintf(stderr,"Writing note on / note off\n");
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}
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if (handle_out) {
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unsigned char ch;
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ch=0x90; snd_rawmidi_write(handle_out,&ch,1);
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ch=60; snd_rawmidi_write(handle_out,&ch,1);
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ch=100; snd_rawmidi_write(handle_out,&ch,1);
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snd_rawmidi_drain(handle_out);
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sleep(1);
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ch=0x90; snd_rawmidi_write(handle_out,&ch,1);
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ch=60; snd_rawmidi_write(handle_out,&ch,1);
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ch=0; snd_rawmidi_write(handle_out,&ch,1);
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snd_rawmidi_drain(handle_out);
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}
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if (fd_out!=-1) {
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unsigned char ch;
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ch=0x90; write(fd_out,&ch,1);
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ch=60; write(fd_out,&ch,1);
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ch=100; write(fd_out,&ch,1);
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sleep(1);
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ch=0x90; write(fd_out,&ch,1);
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ch=60; write(fd_out,&ch,1);
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ch=0; write(fd_out,&ch,1);
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}
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} else {
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if ((handle_in || fd_in!=-1) && (handle_out || fd_out!=-1)) {
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if (verbose) {
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fprintf(stderr,"Testing midi thru in\n");
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}
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while (!stop) {
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unsigned char ch;
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if (handle_in) {
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snd_rawmidi_read(handle_in,&ch,1);
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}
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if (fd_in!=-1) {
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read(fd_in,&ch,1);
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}
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if (verbose) {
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fprintf(stderr,"thru: %02x\n",ch);
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}
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if (handle_out) {
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snd_rawmidi_write(handle_out,&ch,1);
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snd_rawmidi_drain(handle_out);
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}
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if (fd_out!=-1) {
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write(fd_out,&ch,1);
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}
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}
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}else{
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fprintf(stderr,"Testing midi thru needs both input and output\n");
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exit(-1);
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}
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}
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if (verbose) {
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fprintf(stderr,"Closing\n");
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}
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if (handle_in) {
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snd_rawmidi_drain(handle_in);
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snd_rawmidi_close(handle_in);
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}
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if (handle_out) {
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snd_rawmidi_drain(handle_out);
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snd_rawmidi_close(handle_out);
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}
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if (fd_in!=-1) {
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close(fd_in);
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}
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if (fd_out!=-1) {
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close(fd_out);
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}
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return 0;
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}
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