media: document new temporal layering schema values.
Also fix doc as these are advertised on the output port.
Bug: 30150921
Bug: 27596987
Change-Id: Ia95876ade36bc82eea0e9795dea0268abbd1c1ef
diff --git a/media/java/android/media/MediaFormat.java b/media/java/android/media/MediaFormat.java
index d7a18d9..5621cb1 100644
--- a/media/java/android/media/MediaFormat.java
+++ b/media/java/android/media/MediaFormat.java
@@ -53,8 +53,12 @@
* <tr><td>{@link #KEY_INTRA_REFRESH_PERIOD}</td><td>Integer</td><td><b>encoder-only</b>, optional</td></tr>
* <tr><td>{@link #KEY_MAX_WIDTH}</td><td>Integer</td><td><b>decoder-only</b>, optional, max-resolution width</td></tr>
* <tr><td>{@link #KEY_MAX_HEIGHT}</td><td>Integer</td><td><b>decoder-only</b>, optional, max-resolution height</td></tr>
- * <tr><td>{@link #KEY_REPEAT_PREVIOUS_FRAME_AFTER}</td><td>Long</td><td><b>video encoder in surface-mode only</b></td></tr>
- * <tr><td>{@link #KEY_PUSH_BLANK_BUFFERS_ON_STOP}</td><td>Integer(1)</td><td><b>video decoder rendering to a surface only</b></td></tr>
+ * <tr><td>{@link #KEY_REPEAT_PREVIOUS_FRAME_AFTER}</td><td>Long</td><td><b>encoder in surface-mode
+ * only</b>, optional</td></tr>
+ * <tr><td>{@link #KEY_PUSH_BLANK_BUFFERS_ON_STOP}</td><td>Integer(1)</td><td><b>decoder rendering
+ * to a surface only</b>, optional</td></tr>
+ * <tr><td>{@link #KEY_TEMPORAL_LAYERING}</td><td>String</td><td><b>encoder only</b>, optional,
+ * temporal-layering schema</td></tr>
* </table>
* Specify both {@link #KEY_MAX_WIDTH} and {@link #KEY_MAX_HEIGHT} to enable
* adaptive playback (seamless resolution change) for a video decoder that
@@ -280,12 +284,18 @@
/**
* A key describing the temporal layering schema. This is an optional parameter
- * that applies only to video encoders. Use {@link MediaCodec#getInputFormat}
+ * that applies only to video encoders. Use {@link MediaCodec#getOutputFormat}
* after {@link MediaCodec#configure configure} to query if the encoder supports
- * the desired schema. Supported values are {@code webrtc.vp8.1-layer},
- * {@code webrtc.vp8.2-layer}, {@code webrtc.vp8.3-layer}, and {@code none}.
- * If the encoder does not support temporal layering, the input format will
- * not have an entry with this key.
+ * the desired schema. Supported values are {@code webrtc.vp8.N-layer},
+ * {@code android.generic.N}, {@code android.generic.N+M} and {@code none}, where
+ * {@code N} denotes the total number of non-bidirectional layers (which must be at least 1)
+ * and {@code M} denotes the total number of bidirectional layers (which must be non-negative).
+ * <p class=note>{@code android.generic.*} schemas have been added in {@link
+ * android.os.Build.VERSION_CODES#N_MR1}.
+ * <p>
+ * The encoder may support fewer temporal layers, in which case the output format
+ * will contain the configured schema. If the encoder does not support temporal
+ * layering, the output format will not have an entry with this key.
* The associated value is a string.
*/
public static final String KEY_TEMPORAL_LAYERING = "ts-schema";
