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media: add MediaFormat.KEY_PRIORITY.

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Change-Id: I82e2adb3dfac90952a11e2253fe06a2d9be1bc09
This commit is contained in:
Ronghua Wu
2015-03-10 11:00:01 -07:00
committed by Lajos Molnar
parent 97a351a329
commit c33958833f
3 changed files with 21 additions and 0 deletions
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19
media/java/android/media/MediaFormat.java
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@@ -419,6 +419,25 @@ public final class MediaFormat {
*/
public static final String KEY_QUALITY = "quality";
/**
* A key describing the desired codec priority.
* <p>
* The associated value is an integer. Higher value means lower priority.
* <p>
* Currently, only two levels are supported:<br>
* 0: realtime priority - meaning that the codec shall support the given
* performance configuration (e.g. framerate) at realtime. This should
* only be used by media playback, capture, and possibly by realtime
* communication scenarios if best effort performance is not suitable.<br>
* 1: non-realtime priority (best effort).
* <p>
* This is a hint used at codec configuration and resource planning - to understand
* the realtime requirements of the application; however, due to the nature of
* media components, performance is not guaranteed.
*
*/
public static final String KEY_PRIORITY = "priority";
/**
* A key describing the desired profile to be used by an encoder.
* Constants are declared in {@link MediaCodecInfo.CodecProfileLevel}.