initial audio HAL implementation for mako
alsa_sound is imported from codeaurora at:
c1217338f349fe746e0933fcf9b1b288b532808d
[remote "quic"]
url = git://git-android.quicinc.com/platform/hardware/alsa_sound.git
review = review-android.quicinc.com
projectname = platform/hardware/alsa_sound
fetch = +refs/heads/*:refs/remotes/quic/*
Change-Id: Ic985cc3a1088c3957b6e2ac5537e2c36caaf7212
Signed-off-by: Iliyan Malchev <malchev@google.com>
diff --git a/libalsa-intf/amix.c b/libalsa-intf/amix.c
new file mode 100644
index 0000000..40f3807
--- /dev/null
+++ b/libalsa-intf/amix.c
@@ -0,0 +1,92 @@
+/*
+** Copyright 2010, The Android Open-Source Project
+** Copyright (c) 2011, Code Aurora Forum. All rights reserved.
+**
+** 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 <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <string.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;
+ unsigned value;
+ int r;
+ const char* device = "/dev/snd/controlC0";
+
+ mixer = mixer_open(device);
+ if (!mixer){
+ fprintf(stderr,"oops: %s: %d\n", strerror(errno), __LINE__);
+ return -1;
+ }
+
+ if (argc == 1) {
+ mixer_dump(mixer);
+ mixer_close(mixer);
+ return 0;
+ }
+
+ ctl = get_ctl(mixer, argv[1]);
+ argc -= 2;
+ argv += 2;
+
+ if (!ctl) {
+ fprintf(stderr,"can't find control\n");
+ mixer_close(mixer);
+ return -1;
+ }
+ if (argc) {
+ if (isdigit(argv[0][0]))
+ r = mixer_ctl_set_value(ctl, argc, argv);
+ else
+ r = mixer_ctl_select(ctl, argv[0]);
+ if (r)
+ fprintf(stderr,"oops: %s: %d\n", strerror(errno), __LINE__);
+ } else {
+ mixer_ctl_get(ctl, &value);
+ }
+ mixer_close(mixer);
+ return 0;
+}