1 files changed, 78 insertions, 0 deletions
diff --git a/libaudio2/amix.c b/libaudio2/amix.c
new file mode 100644
index 0000000..d978caa
--- /dev/null
+++ b/libaudio2/amix.c
@@ -0,0 +1,78 @@
+/*
+** Copyright 2010, The Android Open-Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+
+#include "alsa_audio.h"
+
+
+struct mixer_ctl *get_ctl(struct mixer *mixer, char *name)
+{
+    char *p;
+    unsigned idx = 0;
+
+    if (isdigit(name[0]))
+        return mixer_get_nth_control(mixer, atoi(name) - 1);
+
+    p = strrchr(name, '#');
+    if (p) {
+        *p++ = 0;
+        idx = atoi(p);
+    }
+
+    return mixer_get_control(mixer, name, idx);
+}
+
+int main(int argc, char **argv)
+{
+    struct mixer *mixer;
+    struct mixer_ctl *ctl;
+    int r;
+
+    mixer = mixer_open();
+    if (!mixer)
+        return -1;
+
+    if (argc == 1) {
+        mixer_dump(mixer);
+        return 0;
+    }
+
+    ctl = get_ctl(mixer, argv[1]);
+    argc -= 2;
+    argv += 2;
+
+    if (!ctl) {
+        fprintf(stderr,"can't find control\n");
+        return -1;
+    }
+
+    if (argc) {
+        if (isdigit(argv[0][0]))
+            r = mixer_ctl_set(ctl, atoi(argv[0]));
+        else
+            r = mixer_ctl_select(ctl, argv[0]);
+        if (r)
+            fprintf(stderr,"oops: %s\n", strerror(errno));
+    } else {
+        mixer_ctl_print(ctl);
+    }
+    return 0;
+}