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Common keys for video QP manipulation

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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
(cherry picked from commit de66953c0a)
This commit is contained in:
Ray Essick
2021-01-20 19:58:10 -08:00
parent 25400d83db
commit 69886ab003
2 changed files with 76 additions and 0 deletions
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8
core/api/current.txt
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@@ -22150,6 +22150,14 @@ 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";

68
media/java/android/media/MediaFormat.java
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@@ -979,6 +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.