New API for querying audio properties
Bug: 6635041
Change-Id: I66e87c75af7c84cdb23cb25a958e79bba8e53baa
diff --git a/media/java/android/media/AudioManager.java b/media/java/android/media/AudioManager.java
index ea00ec8..c848f0f 100644
--- a/media/java/android/media/AudioManager.java
+++ b/media/java/android/media/AudioManager.java
@@ -2443,4 +2443,33 @@
return null;
}
}
+
+ /**
+ * Used as a key for #getProperty to request the native or optimal output sample rate for
+ * this device, in decimal Hz.
+ * {@hide}
+ */
+ public static final String PROPERTY_OUTPUT_SAMPLE_RATE =
+ "android.media.property.OUTPUT_SAMPLE_RATE";
+
+ /**
+ * Used as a key for #getProperty to request the native or optimal output buffer size for
+ * this device, in decimal PCM frames.
+ * {@hide}
+ */
+ public static final String PROPERTY_OUTPUT_FRAMES_PER_BUFFER =
+ "android.media.property.OUTPUT_FRAMES_PER_BUFFER";
+
+ /**
+ * @param key One of the strings corresponding to a property key: either
+ * #PROPERTY_OUTPUT_SAMPLE_RATE or #PROPERTY_OUTPUT_FRAMES_PER_BUFFER
+ * @return A string representing the associated value for that property key,
+ * or null if there is no value for that key.
+ * {@hide}
+ */
+ public String getProperty(String key) {
+ // uses android.os.SystemProperties.get for selected keys, with suitable defaults
+ return null;
+ }
+
}