Add BUFFER_FLAG_DECODE_ONLY to MediaCodec. (f6d26e59) · Commits · e / os / android_frameworks_base

core/api/current.txt

+4 −0

Original line number	Diff line number	Diff line
		@@ -21690,6 +21690,7 @@ package android.media {
		method public void subscribeToVendorParameters(@NonNull java.util.List<java.lang.String>);
		method public void unsubscribeFromVendorParameters(@NonNull java.util.List<java.lang.String>);
		field public static final int BUFFER_FLAG_CODEC_CONFIG = 2; // 0x2
		field public static final int BUFFER_FLAG_DECODE_ONLY = 32; // 0x20
		field public static final int BUFFER_FLAG_END_OF_STREAM = 4; // 0x4
		field public static final int BUFFER_FLAG_KEY_FRAME = 1; // 0x1
		field public static final int BUFFER_FLAG_PARTIAL_FRAME = 8; // 0x8
		@@ -21777,6 +21778,9 @@ package android.media {
		public class MediaCodec.IncompatibleWithBlockModelException extends java.lang.RuntimeException {
		}

		public class MediaCodec.InvalidBufferFlagsException extends java.lang.RuntimeException {
		}

		public static final class MediaCodec.LinearBlock {
		method protected void finalize();
		method public static boolean isCodecCopyFreeCompatible(@NonNull String[]);

media/java/android/media/MediaCodec.java

+48 −0

Original line number	Diff line number	Diff line
		@@ -1709,6 +1709,33 @@ final public class MediaCodec {
		*/
		public static final int BUFFER_FLAG_MUXER_DATA = 16;

		/**
		* This indicates that the buffer is decoded and updates the internal state of the decoder,
		* but does not produce any output buffer.
		*
		* When a buffer has this flag set,
		* {@link OnFrameRenderedListener#onFrameRendered(MediaCodec, long, long)} and
		* {@link Callback#onOutputBufferAvailable(MediaCodec, int, BufferInfo)} will not be called for
		* that given buffer.
		*
		* For example, when seeking to a certain frame, that frame may need to reference previous
		* frames in order for it to produce output. The preceding frames can be marked with this flag
		* so that they are only decoded and their data is used when decoding the latter frame that
		* should be initially displayed post-seek.
		* Another example would be trick play, trick play is when a video is fast-forwarded and only a
		* subset of the frames is to be rendered on the screen. The frames not to be rendered can be
		* marked with this flag for the same reason as the above one.
		* Marking frames with this flag improves the overall performance of playing a video stream as
		* fewer frames need to be passed back to the app.
		*
		* In {@link CodecCapabilities#FEATURE_TunneledPlayback}, buffers marked with this flag
		* are not rendered on the output surface.
		*
		* A frame should not be marked with this flag and {@link #BUFFER_FLAG_END_OF_STREAM}
		* simultaneously, doing so will produce a {@link InvalidBufferFlagsException}
		*/
		public static final int BUFFER_FLAG_DECODE_ONLY = 32;

		/** @hide */
		@IntDef(
		flag = true,
		@@ -1719,6 +1746,7 @@ final public class MediaCodec {
		BUFFER_FLAG_END_OF_STREAM,
		BUFFER_FLAG_PARTIAL_FRAME,
		BUFFER_FLAG_MUXER_DATA,
		BUFFER_FLAG_DECODE_ONLY,
		})
		@Retention(RetentionPolicy.SOURCE)
		public @interface BufferFlag {}
		@@ -1744,6 +1772,8 @@ final public class MediaCodec {
		private static final int CB_OUTPUT_AVAILABLE = 2;
		private static final int CB_ERROR = 3;
		private static final int CB_OUTPUT_FORMAT_CHANGE = 4;
		private static final String EOS_AND_DECODE_ONLY_ERROR_MESSAGE = "An input buffer cannot have "
		+ "both BUFFER_FLAG_END_OF_STREAM and BUFFER_FLAG_DECODE_ONLY flags";

		private class EventHandler extends Handler {
		private MediaCodec mCodec;
		@@ -2103,6 +2133,16 @@ final public class MediaCodec {
		}
		}

		/**
		* Thrown when a buffer is marked with an invalid combination of flags
		* (e.g. both {@link #BUFFER_FLAG_END_OF_STREAM} and {@link #BUFFER_FLAG_DECODE_ONLY})
		*/
		public class InvalidBufferFlagsException extends RuntimeException {
		InvalidBufferFlagsException(String message) {
		super(message);
		}
		}

		/**
		* Configures a component.
		*
		@@ -2666,6 +2706,10 @@ final public class MediaCodec {
		int index,
		int offset, int size, long presentationTimeUs, int flags)
		throws CryptoException {
		if ((flags & BUFFER_FLAG_DECODE_ONLY) != 0
		&& (flags & BUFFER_FLAG_END_OF_STREAM) != 0) {
		throw new InvalidBufferFlagsException(EOS_AND_DECODE_ONLY_ERROR_MESSAGE);
		}
		synchronized(mBufferLock) {
		if (mBufferMode == BUFFER_MODE_BLOCK) {
		throw new IncompatibleWithBlockModelException("queueInputBuffer() "
		@@ -2936,6 +2980,10 @@ final public class MediaCodec {
		@NonNull CryptoInfo info,
		long presentationTimeUs,
		int flags) throws CryptoException {
		if ((flags & BUFFER_FLAG_DECODE_ONLY) != 0
		&& (flags & BUFFER_FLAG_END_OF_STREAM) != 0) {
		throw new InvalidBufferFlagsException(EOS_AND_DECODE_ONLY_ERROR_MESSAGE);
		}
		synchronized(mBufferLock) {
		if (mBufferMode == BUFFER_MODE_BLOCK) {
		throw new IncompatibleWithBlockModelException("queueSecureInputBuffer() "