sad

commit 2b3ed27b5266a539ae42872c6460e08456df9256
parent 588471687b811345cf05be4689386b3bff7f6452
Author: sin <sin@2f30.org>
Date:   Thu, 25 Dec 2014 14:49:29 +0000

Add volume control

Diffstat:
M
cmd.c
 | 
13
+++++++++++++
M
sad.h
 | 
1
+
M
sndio.c
 | 
8
++++++++

3 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/cmd.c b/cmd.c
@@ -17,6 +17,19 @@ cmdstatus(int fd, int argc, char **argv)
 void
 cmdvolume(int fd, int argc, char **argv)
 {
+	int vol;
+
+	if (argc != 2) {
+		dprintf(fd, "ERR \"usage: volume [0-100]\"\n");
+		return;
+	}
+
+	vol = atoi(argv[1]);
+	if (vol < 0 || vol > 100) {
+		dprintf(fd, "ERR \"volume should be between [0, 100]\"\n");
+		return;
+	}
+	output->vol(vol);
 }
 
 void
diff --git a/sad.h b/sad.h
@@ -35,6 +35,7 @@ typedef struct {
 
 typedef struct {
 	int (*init)(void);
+	int (*vol)(int);
 	int (*open)(int, int, int);
 	void (*play)(void *, size_t);
 	int (*close)(void);
diff --git a/sndio.c b/sndio.c
@@ -16,6 +16,13 @@ sndioinit(void)
 }
 
 static int
+sndiovol(int vol)
+{
+	sio_setvol(hdl, (SIO_MAXVOL * vol) / 100);
+	return 0;
+}
+
+static int
 sndioopen(int bits, int rate, int channels)
 {
 	struct sio_par par;
@@ -82,6 +89,7 @@ sndioexit(void)
 
 Output sndiooutput = {
 	.init = sndioinit,
+	.vol = sndiovol,
 	.open = sndioopen,
 	.play = sndioplay,
 	.close = sndioclose,