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Commit 632f1930 authored by Jean-Michel Trivi's avatar Jean-Michel Trivi
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MediaFormat: codec-agnostic key for max number of output channels 

New key behaving like KEY_AAC_MAX_OUTPUT_CHANNEL_COUNT but not
AAC specific.

Bug: 198197610
Test: TBA on new decoder
Change-Id: If4d5f4580cba4ababbe4f18e19efbd070ec8f65c
parent 31ecebec

core/api/current.txt

+1 −0
Original line number Diff line number Diff line
@@ -22581,6 +22581,7 @@ package android.media { 
    field public static final String KEY_MAX_FPS_TO_ENCODER = "max-fps-to-encoder";

    field public static final String KEY_MAX_HEIGHT = "max-height";

    field public static final String KEY_MAX_INPUT_SIZE = "max-input-size";

    field public static final String KEY_MAX_OUTPUT_CHANNEL_COUNT = "max-output-channel_count";

    field public static final String KEY_MAX_PTS_GAP_TO_ENCODER = "max-pts-gap-to-encoder";

    field public static final String KEY_MAX_WIDTH = "max-width";

    field public static final String KEY_MIME = "mime";

media/java/android/media/MediaFormat.java

+13 −0
Original line number Diff line number Diff line
@@ -682,6 +682,19 @@ public final class MediaFormat { 
     */

    public static final String KEY_CHANNEL_MASK = "channel-mask";



    /**

     * A key describing the maximum number of channels that can be output by an audio decoder.

     * By default, the decoder will output the same number of channels as present in the encoded

     * stream, if supported. Set this value to limit the number of output channels, and use

     * the downmix information in the stream, if available.

     * <p>Values larger than the number of channels in the content to decode behave like the number

     * of channels in the content (if applicable), for instance passing 99 for a 5.1 audio stream

     * behaves like passing 6.

     * <p>This key is only used during decoding.

     */

    public static final String KEY_MAX_OUTPUT_CHANNEL_COUNT =

            "max-output-channel_count";



    /**

     * A key describing the number of frames to trim from the start of the decoded audio stream.

     * The associated value is an integer.