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<div class="title">/test/rawmidi.c</div> </div>
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<div class="contents">
<p><a class="anchor" id="example_test_rawmidi"></a> </p><div class="fragment"><div class="line"><span class="preprocessor">#include <stdio.h></span></div>
<div class="line"><span class="preprocessor">#include <stdlib.h></span></div>
<div class="line"><span class="preprocessor">#include <ctype.h></span></div>
<div class="line"><span class="preprocessor">#include "../include/asoundlib.h"</span></div>
<div class="line"><span class="preprocessor">#include <signal.h></span></div>
<div class="line"></div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">void</span> usage(<span class="keywordtype">void</span>)</div>
<div class="line">{</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"usage: rawmidi [options]\n"</span>);</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">" options:\n"</span>);</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">" -v: verbose mode\n"</span>);</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">" -i device-id : test ALSA input device\n"</span>);</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">" -o device-id : test ALSA output device\n"</span>);</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">" -I node : test input node\n"</span>);</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">" -O node : test output node\n"</span>);</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">" -t: test midi thru\n"</span>);</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">" example:\n"</span>);</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">" rawmidi -i hw:0,0 -O /dev/midi1\n"</span>);</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">" tests input for card 0, device 0, using snd_rawmidi API\n"</span>);</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">" and /dev/midi1 using file descriptors\n"</span>);</div>
<div class="line">}</div>
<div class="line"></div>
<div class="line"><span class="keywordtype">int</span> stop=0;</div>
<div class="line"></div>
<div class="line"><span class="keywordtype">void</span> sighandler(<span class="keywordtype">int</span> dum)</div>
<div class="line">{</div>
<div class="line"> stop=1;</div>
<div class="line">}</div>
<div class="line"></div>
<div class="line"><span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc,<span class="keywordtype">char</span>** argv)</div>
<div class="line">{</div>
<div class="line"> <span class="keywordtype">int</span> i;</div>
<div class="line"> <span class="keywordtype">int</span> err;</div>
<div class="line"> <span class="keywordtype">int</span> thru=0;</div>
<div class="line"> <span class="keywordtype">int</span> verbose = 0;</div>
<div class="line"> <span class="keywordtype">char</span> *device_in = NULL;</div>
<div class="line"> <span class="keywordtype">char</span> *device_out = NULL;</div>
<div class="line"> <span class="keywordtype">char</span> *node_in = NULL;</div>
<div class="line"> <span class="keywordtype">char</span> *node_out = NULL;</div>
<div class="line"> </div>
<div class="line"> <span class="keywordtype">int</span> fd_in = -1,fd_out = -1;</div>
<div class="line"> <a class="code" href="group___raw_midi.html#gaa21972df6ca3ebde0f7225b2472d0095">snd_rawmidi_t</a> *handle_in = 0,*handle_out = 0;</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">if</span> (argc==1) {</div>
<div class="line"> usage();</div>
<div class="line"> exit(0);</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">for</span> (i = 1 ; i<argc ; i++) {</div>
<div class="line"> <span class="keywordflow">if</span> (argv[i][0]==<span class="charliteral">'-'</span>) {</div>
<div class="line"> <span class="keywordflow">switch</span> (argv[i][1]) {</div>
<div class="line"> <span class="keywordflow">case</span> <span class="charliteral">'h'</span>:</div>
<div class="line"> usage();</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"> <span class="keywordflow">case</span> <span class="charliteral">'v'</span>:</div>
<div class="line"> verbose = 1;</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"> <span class="keywordflow">case</span> <span class="charliteral">'t'</span>:</div>
<div class="line"> thru = 1;</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"> <span class="keywordflow">case</span> <span class="charliteral">'i'</span>:</div>
<div class="line"> <span class="keywordflow">if</span> (i + 1 < argc)</div>
<div class="line"> device_in = argv[++i];</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"> <span class="keywordflow">case</span> <span class="charliteral">'I'</span>:</div>
<div class="line"> <span class="keywordflow">if</span> (i + 1 < argc)</div>
<div class="line"> node_in = argv[++i];</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"> <span class="keywordflow">case</span> <span class="charliteral">'o'</span>:</div>
<div class="line"> <span class="keywordflow">if</span> (i + 1 < argc)</div>
<div class="line"> device_out = argv[++i];</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"> <span class="keywordflow">case</span> <span class="charliteral">'O'</span>:</div>
<div class="line"> <span class="keywordflow">if</span> (i + 1 < argc)</div>
<div class="line"> node_out = argv[++i];</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"> } </div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (verbose) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"Using: \n"</span>);</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"Input: "</span>);</div>
<div class="line"> <span class="keywordflow">if</span> (device_in) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"device %s\n"</span>,device_in);</div>
<div class="line"> }<span class="keywordflow">else</span> <span class="keywordflow">if</span> (node_in){</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"%s\n"</span>,node_in); </div>
<div class="line"> }<span class="keywordflow">else</span>{</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"NONE\n"</span>);</div>
<div class="line"> }</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"Output: "</span>);</div>
<div class="line"> <span class="keywordflow">if</span> (device_out) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"device %s\n"</span>,device_out);</div>
<div class="line"> }<span class="keywordflow">else</span> <span class="keywordflow">if</span> (node_out){</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"%s\n"</span>,node_out); </div>
<div class="line"> }<span class="keywordflow">else</span>{</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"NONE\n"</span>);</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">if</span> (device_in) {</div>
<div class="line"> err = <a name="a0"></a><a class="code" href="group___raw_midi.html#ga2ab783051deeb7eb37eb568b76448889">snd_rawmidi_open</a>(&handle_in,NULL,device_in,0); </div>
<div class="line"> <span class="keywordflow">if</span> (err) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"snd_rawmidi_open %s failed: %d\n"</span>,device_in,err);</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">if</span> (node_in && (!node_out || strcmp(node_out,node_in))) {</div>
<div class="line"> fd_in = open(node_in,O_RDONLY);</div>
<div class="line"> <span class="keywordflow">if</span> (fd_in<0) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"open %s for input failed\n"</span>,node_in);</div>
<div class="line"> } </div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> signal(SIGINT,sighandler);</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (device_out) {</div>
<div class="line"> err = <a class="code" href="group___raw_midi.html#ga2ab783051deeb7eb37eb568b76448889">snd_rawmidi_open</a>(NULL,&handle_out,device_out,0);</div>
<div class="line"> <span class="keywordflow">if</span> (err) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"snd_rawmidi_open %s failed: %d\n"</span>,device_out,err);</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">if</span> (node_out && (!node_in || strcmp(node_out,node_in))) {</div>
<div class="line"> fd_out = open(node_out,O_WRONLY); </div>
<div class="line"> <span class="keywordflow">if</span> (fd_out<0) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"open %s for output failed\n"</span>,node_out);</div>
<div class="line"> } </div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (node_in && node_out && strcmp(node_out,node_in)==0) {</div>
<div class="line"> fd_in = fd_out = open(node_out,O_RDWR); </div>
<div class="line"> <span class="keywordflow">if</span> (fd_out<0) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"open %s for input and output failed\n"</span>,node_out);</div>
<div class="line"> } </div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"></div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (!thru) {</div>
<div class="line"> <span class="keywordflow">if</span> (handle_in || fd_in!=-1) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"Read midi in\n"</span>);</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"Press ctrl-c to stop\n"</span>);</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (handle_in) {</div>
<div class="line"> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> ch;</div>
<div class="line"> <span class="keywordflow">while</span> (!stop) {</div>
<div class="line"> <a name="a1"></a><a class="code" href="group___raw_midi.html#ga9b0952fc04facda83cdf1521325ca475">snd_rawmidi_read</a>(handle_in,&ch,1);</div>
<div class="line"> <span class="keywordflow">if</span> (verbose) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"read %02x\n"</span>,ch);</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">if</span> (fd_in!=-1) {</div>
<div class="line"> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> ch;</div>
<div class="line"> <span class="keywordflow">while</span> (!stop) {</div>
<div class="line"> read(fd_in,&ch,1);</div>
<div class="line"> <span class="keywordflow">if</span> (verbose) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"read %02x\n"</span>,ch);</div>
<div class="line"> }</div>
<div class="line"> } </div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (handle_out || fd_out!=-1) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"Writing note on / note off\n"</span>);</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (handle_out) {</div>
<div class="line"> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> ch;</div>
<div class="line"> ch=0x90; <a name="a2"></a><a class="code" href="group___raw_midi.html#ga0a30e482efec57f4ea74c533a0f9b134">snd_rawmidi_write</a>(handle_out,&ch,1);</div>
<div class="line"> ch=60; <a class="code" href="group___raw_midi.html#ga0a30e482efec57f4ea74c533a0f9b134">snd_rawmidi_write</a>(handle_out,&ch,1);</div>
<div class="line"> ch=100; <a class="code" href="group___raw_midi.html#ga0a30e482efec57f4ea74c533a0f9b134">snd_rawmidi_write</a>(handle_out,&ch,1);</div>
<div class="line"> <a name="a3"></a><a class="code" href="group___raw_midi.html#gabfff7417ec957b7ee07882f91d73d7be">snd_rawmidi_drain</a>(handle_out);</div>
<div class="line"> sleep(1);</div>
<div class="line"> ch=0x90; <a class="code" href="group___raw_midi.html#ga0a30e482efec57f4ea74c533a0f9b134">snd_rawmidi_write</a>(handle_out,&ch,1);</div>
<div class="line"> ch=60; <a class="code" href="group___raw_midi.html#ga0a30e482efec57f4ea74c533a0f9b134">snd_rawmidi_write</a>(handle_out,&ch,1);</div>
<div class="line"> ch=0; <a class="code" href="group___raw_midi.html#ga0a30e482efec57f4ea74c533a0f9b134">snd_rawmidi_write</a>(handle_out,&ch,1);</div>
<div class="line"> <a class="code" href="group___raw_midi.html#gabfff7417ec957b7ee07882f91d73d7be">snd_rawmidi_drain</a>(handle_out); </div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">if</span> (fd_out!=-1) {</div>
<div class="line"> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> ch;</div>
<div class="line"> ch=0x90; write(fd_out,&ch,1);</div>
<div class="line"> ch=60; write(fd_out,&ch,1);</div>
<div class="line"> ch=100; write(fd_out,&ch,1);</div>
<div class="line"> sleep(1);</div>
<div class="line"> ch=0x90; write(fd_out,&ch,1);</div>
<div class="line"> ch=60; write(fd_out,&ch,1);</div>
<div class="line"> ch=0; write(fd_out,&ch,1);</div>
<div class="line"> }</div>
<div class="line"> } <span class="keywordflow">else</span> {</div>
<div class="line"> <span class="keywordflow">if</span> ((handle_in || fd_in!=-1) && (handle_out || fd_out!=-1)) {</div>
<div class="line"> <span class="keywordflow">if</span> (verbose) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"Testing midi thru in\n"</span>);</div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">while</span> (!stop) {</div>
<div class="line"> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> ch;</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">if</span> (handle_in) {</div>
<div class="line"> <a class="code" href="group___raw_midi.html#ga9b0952fc04facda83cdf1521325ca475">snd_rawmidi_read</a>(handle_in,&ch,1);</div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">if</span> (fd_in!=-1) {</div>
<div class="line"> read(fd_in,&ch,1);</div>
<div class="line"> } </div>
<div class="line"> <span class="keywordflow">if</span> (verbose) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"thru: %02x\n"</span>,ch);</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (handle_out) {</div>
<div class="line"> <a class="code" href="group___raw_midi.html#ga0a30e482efec57f4ea74c533a0f9b134">snd_rawmidi_write</a>(handle_out,&ch,1);</div>
<div class="line"> <a class="code" href="group___raw_midi.html#gabfff7417ec957b7ee07882f91d73d7be">snd_rawmidi_drain</a>(handle_out); </div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">if</span> (fd_out!=-1) {</div>
<div class="line"> write(fd_out,&ch,1);</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> }<span class="keywordflow">else</span>{</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"Testing midi thru needs both input and output\n"</span>); </div>
<div class="line"> exit(-1);</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (verbose) {</div>
<div class="line"> fprintf(stderr,<span class="stringliteral">"Closing\n"</span>);</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">if</span> (handle_in) {</div>
<div class="line"> <a class="code" href="group___raw_midi.html#gabfff7417ec957b7ee07882f91d73d7be">snd_rawmidi_drain</a>(handle_in); </div>
<div class="line"> <a name="a4"></a><a class="code" href="group___raw_midi.html#gabc6bd5922151fb50196f62b9a4ab9f56">snd_rawmidi_close</a>(handle_in); </div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">if</span> (handle_out) {</div>
<div class="line"> <a class="code" href="group___raw_midi.html#gabfff7417ec957b7ee07882f91d73d7be">snd_rawmidi_drain</a>(handle_out); </div>
<div class="line"> <a class="code" href="group___raw_midi.html#gabc6bd5922151fb50196f62b9a4ab9f56">snd_rawmidi_close</a>(handle_out); </div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">if</span> (fd_in!=-1) {</div>
<div class="line"> close(fd_in);</div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">if</span> (fd_out!=-1) {</div>
<div class="line"> close(fd_out);</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">return</span> 0;</div>
<div class="line">}</div>
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