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Commit de66953c authored by Ray Essick's avatar Ray Essick
Browse files

Common keys for video QP manipulation 

Definitions for managing Video encoding Quantization Parameter (QP).
Providing a standardized key instead of various vendor-specific keys.

Bug: 161486623
Test: build, b/179554934 for functionality
Change-Id: I8f1976cff55e119a2b42332de3d7ae690dc9e1fa
parent 6f4bf3f9

core/api/current.txt

+8 −0
Original line number Diff line number Diff line
@@ -21905,6 +21905,14 @@ package android.media { 
    field public static final String KEY_TILE_HEIGHT = "tile-height";

    field public static final String KEY_TILE_WIDTH = "tile-width";

    field public static final String KEY_TRACK_ID = "track-id";

    field public static final String KEY_VIDEO_QP_B_MAX = "video-qp-b-max";

    field public static final String KEY_VIDEO_QP_B_MIN = "video-qp-b-min";

    field public static final String KEY_VIDEO_QP_I_MAX = "video-qp-i-max";

    field public static final String KEY_VIDEO_QP_I_MIN = "video-qp-i-min";

    field public static final String KEY_VIDEO_QP_MAX = "video-qp-max";

    field public static final String KEY_VIDEO_QP_MIN = "video-qp-min";

    field public static final String KEY_VIDEO_QP_P_MAX = "video-qp-p-max";

    field public static final String KEY_VIDEO_QP_P_MIN = "video-qp-p-min";

    field public static final String KEY_WIDTH = "width";

    field public static final String MIMETYPE_AUDIO_AAC = "audio/mp4a-latm";

    field public static final String MIMETYPE_AUDIO_AC3 = "audio/ac3";

media/java/android/media/MediaFormat.java

+68 −1
Original line number Diff line number Diff line
@@ -20,7 +20,6 @@ import android.annotation.IntDef; 
import android.annotation.NonNull;

import android.annotation.Nullable;

import android.compat.annotation.UnsupportedAppUsage;

import android.util.Log;



import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;
@@ -980,6 +979,74 @@ public final class MediaFormat { 
     */

    public static final String KEY_BITRATE_MODE = "bitrate-mode";



    /**

     * A key describing the maximum Quantization Parameter allowed for encoding video.

     * This key applies to all three video frame types (I, P, and B). This value fills

     * in for any of the frame-specific #KEY_VIDEO_QP_I_MAX, #KEY_VIDEO_QP_P_MAX, or

     * #KEY_VIDEO_QP_B_MAX keys that are not specified

     *

     * The associated value is an integer.

     */

    public static final String KEY_VIDEO_QP_MAX = "video-qp-max";



    /**

     * A key describing the maximum Quantization Parameter allowed for encoding video.

     * This key applies to all three video frame types (I, P, and B). This value fills

     * in for any of the frame-specific #KEY_VIDEO_QP_I_MIN, #KEY_VIDEO_QP_P_MIN, or

     * #KEY_VIDEO_QP_B_MIN keys that are not specified

     *

     * The associated value is an integer.

     */

    public static final String KEY_VIDEO_QP_MIN = "video-qp-min";



    /**

     * A key describing the maximum Quantization Parameter allowed for encoding video.

     * This value applies to video I-frames.

     *

     * The associated value is an integer.

     */

    public static final String KEY_VIDEO_QP_I_MAX = "video-qp-i-max";



    /**

     * A key describing the minimum Quantization Parameter allowed for encoding video.

     * This value applies to video I-frames.

     *

     * The associated value is an integer.

     */

    public static final String KEY_VIDEO_QP_I_MIN = "video-qp-i-min";



    /**

     * A key describing the maximum Quantization Parameter allowed for encoding video.

     * This value applies to video P-frames.

     *

     * The associated value is an integer.

     */

    public static final String KEY_VIDEO_QP_P_MAX = "video-qp-p-max";



    /**

     * A key describing the minimum Quantization Parameter allowed for encoding video.

     * This value applies to video P-frames.

     *

     * The associated value is an integer.

     */

    public static final String KEY_VIDEO_QP_P_MIN = "video-qp-p-min";



    /**

     * A key describing the maximum Quantization Parameter allowed for encoding video.

     * This value applies to video B-frames.

     *

     * The associated value is an integer.

     */

    public static final String KEY_VIDEO_QP_B_MAX = "video-qp-b-max";



    /**

     * A key describing the minimum Quantization Parameter allowed for encoding video.

     * This value applies to video B-frames.

     *

     * The associated value is an integer.

     */

    public static final String KEY_VIDEO_QP_B_MIN = "video-qp-b-min";



    /**

     * A key describing the audio session ID of the AudioTrack associated

     * to a tunneled video codec.