commit a768c306b2391b8b573f047de3416c693fa50e62
author Eric Laurent <elaurent@google.com> Mon Jul 28 11:33:43 2014 -0700
committer Eric Laurent <elaurent@google.com> Mon Jul 28 19:24:50 2014 +0000
tree a2960b8ee0301ab11d10e88b39fc9a3df18d7255
parent 0a381a379d00f708a0dfe4da758697128177749a

audio: add audio device address helper function

Add helper function to derive set_parameter command
string from device type and address.

14815883

Change-Id: Icf47218f1809f567ef93bdd99d6308475886b298

include/system/audio.h

diff --git a/include/system/audio.h b/include/system/audio.h
index 13c8ae5..a287389 100644
--- a/include/system/audio.h
+++ b/include/system/audio.h
@@ -20,6 +20,7 @@
 
 #include <stdbool.h>
 #include <stdint.h>
+#include <stdio.h>
 #include <sys/cdefs.h>
 #include <sys/types.h>
 
@@ -1325,6 +1326,23 @@
     return size;
 }
 
+/* converts device address to string sent to audio HAL via set_parameters */
+static char *audio_device_address_to_parameter(audio_devices_t device, const char *address)
+{
+    const size_t kSize = AUDIO_DEVICE_MAX_ADDRESS_LEN + sizeof("a2dp_sink_address=");
+    char param[kSize];
+
+    if (device & AUDIO_DEVICE_OUT_ALL_A2DP)
+        snprintf(param, kSize, "%s=%s", "a2dp_sink_address", address);
+    else if (device & AUDIO_DEVICE_OUT_REMOTE_SUBMIX)
+        snprintf(param, kSize, "%s=%s", "mix", address);
+    else
+        snprintf(param, kSize, "%s", address);
+
+    return strdup(param);
+}
+
+
 __END_DECLS
 
 #endif  // ANDROID_AUDIO_CORE_H