ref: 65702299b3f1d4fa27bf14c471cda66078b0110e
parent: 00ccb44cce26472a18cf569a689850098ff13679
author: cinap_lenrek <cinap_lenrek@gmx.de>
date: Sun Aug 11 23:43:42 EDT 2013
esd: enlightenment sound daemon this program allows one to stream audio from linux/windows to plan9 /dev/audio. sometimes handy to augment vnc sessions with sound.
--- /dev/null
+++ b/sys/src/cmd/aux/esd.c
@@ -1,0 +1,201 @@
+/*
+ * enlightenment sound daemon for plan9front
+ *
+ * usage: aux/listen1 -t 'tcp!*!16001' esd
+ */
+
+#include <u.h>
+#include <libc.h>
+
+int bigendian = 0;
+
+void
+die(char *msg)
+{+ exits(msg);
+}
+
+ulong
+get4(void)
+{+ uchar buf[4];
+
+ if(readn(0, buf, 4) != 4)
+ die("read");+ if(bigendian)
+ return buf[3] | buf[2]<<8 | buf[1]<<16 | buf[0]<<24;
+ else
+ return buf[0] | buf[1]<<8 | buf[2]<<16 | buf[3]<<24;
+}
+
+char*
+getname(char *buf)
+{+ if(readn(0, buf, 128) != 128)
+ die("read");+ return buf;
+}
+
+void
+put4(ulong v)
+{+ uchar buf[4];
+
+ if(bigendian){+ buf[3] = v & 0xFF, v >>= 8;
+ buf[2] = v & 0xFF, v >>= 8;
+ buf[1] = v & 0xFF, v >>= 8;
+ buf[0] = v & 0xFF;
+ } else {+ buf[0] = v & 0xFF, v >>= 8;
+ buf[1] = v & 0xFF, v >>= 8;
+ buf[2] = v & 0xFF, v >>= 8;
+ buf[3] = v & 0xFF;
+ }
+ if(write(1, buf, 4) != 4)
+ die("write");+}
+
+char*
+pcmfmt(ulong fmt, ulong rate)
+{+ static char buf[32];
+
+ snprint(buf, sizeof(buf), "s%dc%dr%lud",
+ (fmt & 0x000F) == 0x01 ? 16 : 8,
+ (fmt & 0x00F0) == 0x20 ? 2 : 1,
+ rate);
+ return buf;
+}
+
+void
+main(void)
+{+ ulong op, id, len, fmt, rate;
+ char buf[256];
+ int i, fd;
+
+Init:
+ /* initial protocol */
+ if(readn(0, buf, 16) != 16) /* key */
+ die("read");+ if((get4() & 0xFF) == 'E') /* endian */
+ bigendian = 1;
+ put4(1);
+
+ for(;;){+ op = get4();
+ switch(op){+ case 0: /* init */
+ case 1: /* lock */
+ case 2: /* unlock */
+ goto Init;
+ case 3: /* stream-play */
+ fmt = get4();
+ rate = get4();
+ getname(buf);
+ fd = -1;
+ /* wait 2 seconds, device might be busy */
+ for(i=0; i<2000; i+=100){+ fd = open("/dev/audio", OWRITE);+ if(fd >= 0)
+ break;
+ sleep(100);
+ }
+ if(fd < 0)
+ die("open");+ dup(fd, 1);
+ execl("/bin/audio/pcmconv", "pcmconv",+ "-i", pcmfmt(fmt, rate), 0);
+ die("exec");+ break;
+ case 4:
+ case 5: /* stream-mon */
+ fmt = get4();
+ rate = get4();
+ getname(buf);
+ fd = open("/dev/audio", OREAD);+ if(fd < 0)
+ die("open");+ dup(fd, 0);
+ execl("/bin/audio/pcmconv", "pcmconv",+ "-o", pcmfmt(fmt, rate), 0);
+ die("exec");+ break;
+ case 6: /* sample-cache */
+ fmt = get4(); /* format */
+ rate = get4(); /* rate */
+ len = get4(); /* size */
+ getname(buf);
+ id = get4(); /* sample-id */
+ if(fork() == 0){+ /* TODO */
+ fd = open("/dev/null", OWRITE);+ if(fd < 0)
+ die("open");+ dup(fd, 1);
+ snprint(buf, sizeof(buf), "%lud", len);
+ execl("/bin/audio/pcmconv", "pcmconv",+ "-l", buf,
+ "-i", pcmfmt(fmt, rate), 0);
+ die("exec");+ }
+ waitpid();
+ put4(id);
+ break;
+ case 7: /* sample-free */
+ case 8: /* sample-play */
+ case 9: /* sample-loop */
+ case 10: /* sample-stop */
+ case 11: /* sample-kill */
+ id = get4();
+ put4(id);
+ break;
+ case 12: /* standby */
+ case 13: /* resume */
+ goto Init;
+ case 14: /* sample-getid */
+ getname(buf);
+ put4(0);/* sample-id */
+ break;
+ case 15: /* stream-filter */
+ fmt = get4();
+ rate = get4();
+ USED(fmt);
+ USED(rate);
+ getname(buf);
+ put4(1);
+ break;
+ case 16: /* server-info */
+ case 17: /* server-all-info */
+ put4(1); /* version */
+ put4(44100); /* rate */
+ put4(0x0021); /* fmt */
+ if(op == 16)
+ break;
+ put4(0);
+ memset(buf, 0, sizeof(buf));
+ if(write(1, buf, 32) != 32)
+ die("write");+ break;
+ case 18: /* subscribe */
+ case 19: /* unsubscribe */
+ break;
+ case 20: /* stream-pan */
+ case 21: /* sample-pan */
+ id = get4();
+ USED(id);
+ get4(); /* left */
+ get4(); /* reight */
+ put4(1);
+ break;
+ case 22: /* standby-mode */
+ get4(); /* version */
+ put4(0);/* mode */
+ put4(0);/* ok */
+ break;
+ case 23: /* latency */
+ put4(0);
+ }
+ }
+}
--- a/sys/src/cmd/aux/mkfile
+++ b/sys/src/cmd/aux/mkfile
@@ -16,6 +16,7 @@
data2s\
depend\
disksim\
+ esd\
getflags\
icanhasmsi\
lines\
--
⑨