Merge "Extract exif data from mp4 extractor if available" into pi-dev (0c423693) · Commits · e / os / android_frameworks_base

media/java/android/media/ExifInterface.java

+58 −34

Original line number	Diff line number	Diff line
		@@ -66,7 +66,7 @@ import libcore.io.Streams;
		/**
		* This is a class for reading and writing Exif tags in a JPEG file or a RAW image file.
		* <p>
		* Supported formats are: JPEG, DNG, CR2, NEF, NRW, ARW, RW2, ORF, PEF, SRW and RAF.
		* Supported formats are: JPEG, DNG, CR2, NEF, NRW, ARW, RW2, ORF, PEF, SRW, RAF and HEIF.
		* <p>
		* Attribute mutation is supported for JPEG image files.
		*/
		@@ -2524,9 +2524,6 @@ public class ExifInterface {
		private void getHeifAttributes(ByteOrderedDataInputStream in) throws IOException {
		MediaMetadataRetriever retriever = new MediaMetadataRetriever();
		try {
		if (mSeekableFileDescriptor != null) {
		retriever.setDataSource(mSeekableFileDescriptor);
		} else {
		retriever.setDataSource(new MediaDataSource() {
		long mPosition;

		@@ -2562,8 +2559,11 @@ public class ExifInterface {
		return -1;
		}
		});
		}

		String exifOffsetStr = retriever.extractMetadata(
		MediaMetadataRetriever.METADATA_KEY_EXIF_OFFSET);
		String exifLengthStr = retriever.extractMetadata(
		MediaMetadataRetriever.METADATA_KEY_EXIF_LENGTH);
		String hasImage = retriever.extractMetadata(
		MediaMetadataRetriever.METADATA_KEY_HAS_IMAGE);
		String hasVideo = retriever.extractMetadata(
		@@ -2622,6 +2622,30 @@ public class ExifInterface {
		ExifAttribute.createUShort(orientation, mExifByteOrder));
		}

		if (exifOffsetStr != null && exifLengthStr != null) {
		int offset = Integer.parseInt(exifOffsetStr);
		int length = Integer.parseInt(exifLengthStr);
		if (length <= 6) {
		throw new IOException("Invalid exif length");
		}
		in.seek(offset);
		byte[] identifier = new byte[6];
		if (in.read(identifier) != 6) {
		throw new IOException("Can't read identifier");
		}
		offset += 6;
		length -= 6;
		if (!Arrays.equals(identifier, IDENTIFIER_EXIF_APP1)) {
		throw new IOException("Invalid identifier");
		}

		byte[] bytes = new byte[length];
		if (in.read(bytes) != length) {
		throw new IOException("Can't read exif");
		}
		readExifSegment(bytes, IFD_TYPE_PRIMARY);
		}

		if (DEBUG) {
		Log.d(TAG, "Heif meta: " + width + "x" + height + ", rotation " + rotation);
		}

media/java/android/media/MediaMetadataRetriever.java

+9 −0

Original line number	Diff line number	Diff line
		@@ -890,5 +890,14 @@ public class MediaMetadataRetriever
		*/
		public static final int METADATA_KEY_VIDEO_FRAME_COUNT = 32;

		/**
		* @hide
		*/
		public static final int METADATA_KEY_EXIF_OFFSET = 33;

		/**
		* @hide
		*/
		public static final int METADATA_KEY_EXIF_LENGTH = 34;
		// Add more here...
		}