Android/frameworks_base
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge "Clean documentation on video QP key semantics." into sc-dev

Browse Source
This commit is contained in:
Ray Essick
2021-03-25 23:30:47 +00:00
committed by Android (Google) Code Review
parent 94fd54265e 0b9987c9fd
commit 8b790e7bda
1 changed files with 15 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
media/java/android/media/MediaFormat.java
View File

@@ -985,19 +985,27 @@ public final class MediaFormat {
/**
* 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
* This key applies to all three video picture types (I, P, and B).
* The value is used directly for picture type I; a per-mime formula is used
* to calculate the value for the remaining picture types.
*
* This calculation can be avoided by directly specifying values for each picture type
* using the type-specific keys {@link #KEY_VIDEO_QP_I_MAX}, {@link #KEY_VIDEO_QP_P_MAX},
* and {@link #KEY_VIDEO_QP_B_MAX}.
*
* 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
* A key describing the minimum Quantization Parameter allowed for encoding video.
* This key applies to all three video frame types (I, P, and B).
* The value is used directly for picture type I; a per-mime formula is used
* to calculate the value for the remaining picture types.
*
* This calculation can be avoided by directly specifying values for each picture type
* using the type-specific keys {@link #KEY_VIDEO_QP_I_MIN}, {@link #KEY_VIDEO_QP_P_MIN},
* and {@link #KEY_VIDEO_QP_B_MIN}.
*
* The associated value is an integer.
*/