Extend MediaCodec.CryptoInfo to support Sample AES (45eb9b39) · Commits · e / os / android_frameworks_base

api/current.txt

+9 −0

Original line number	Diff line number	Diff line
		@@ -15505,6 +15505,7 @@ package android.media {
		field public static final int BUFFER_FLAG_KEY_FRAME = 1; // 0x1
		field public static final deprecated int BUFFER_FLAG_SYNC_FRAME = 1; // 0x1
		field public static final int CONFIGURE_FLAG_ENCODE = 1; // 0x1
		field public static final int CRYPTO_MODE_AES_CBC = 2; // 0x2
		field public static final int CRYPTO_MODE_AES_CTR = 1; // 0x1
		field public static final int CRYPTO_MODE_UNENCRYPTED = 0; // 0x0
		field public static final deprecated int INFO_OUTPUT_BUFFERS_CHANGED = -3; // 0xfffffffd
		@@ -15556,6 +15557,7 @@ package android.media {
		public static final class MediaCodec.CryptoInfo {
		ctor public MediaCodec.CryptoInfo();
		method public void set(int, int[], int[], byte[], byte[], int);
		method public void setPattern(android.media.MediaCodec.CryptoInfo.Pattern);
		field public byte[] iv;
		field public byte[] key;
		field public int mode;
		@@ -15564,6 +15566,13 @@ package android.media {
		field public int numSubSamples;
		}

		public static final class MediaCodec.CryptoInfo.Pattern {
		ctor public MediaCodec.CryptoInfo.Pattern(int, int);
		method public int getEncryptBlocks();
		method public int getSkipBlocks();
		method public void set(int, int);
		}

		public static abstract interface MediaCodec.OnFrameRenderedListener {
		method public abstract void onFrameRendered(android.media.MediaCodec, long, long);
		}

api/system-current.txt

+9 −0

Original line number	Diff line number	Diff line
		@@ -16771,6 +16771,7 @@ package android.media {
		field public static final int BUFFER_FLAG_KEY_FRAME = 1; // 0x1
		field public static final deprecated int BUFFER_FLAG_SYNC_FRAME = 1; // 0x1
		field public static final int CONFIGURE_FLAG_ENCODE = 1; // 0x1
		field public static final int CRYPTO_MODE_AES_CBC = 2; // 0x2
		field public static final int CRYPTO_MODE_AES_CTR = 1; // 0x1
		field public static final int CRYPTO_MODE_UNENCRYPTED = 0; // 0x0
		field public static final deprecated int INFO_OUTPUT_BUFFERS_CHANGED = -3; // 0xfffffffd
		@@ -16822,6 +16823,7 @@ package android.media {
		public static final class MediaCodec.CryptoInfo {
		ctor public MediaCodec.CryptoInfo();
		method public void set(int, int[], int[], byte[], byte[], int);
		method public void setPattern(android.media.MediaCodec.CryptoInfo.Pattern);
		field public byte[] iv;
		field public byte[] key;
		field public int mode;
		@@ -16830,6 +16832,13 @@ package android.media {
		field public int numSubSamples;
		}

		public static final class MediaCodec.CryptoInfo.Pattern {
		ctor public MediaCodec.CryptoInfo.Pattern(int, int);
		method public int getEncryptBlocks();
		method public int getSkipBlocks();
		method public void set(int, int);
		}

		public static abstract interface MediaCodec.OnFrameRenderedListener {
		method public abstract void onFrameRendered(android.media.MediaCodec, long, long);
		}

media/java/android/media/MediaCodec.java

+83 −21

Original line number	Diff line number	Diff line
		@@ -2179,6 +2179,7 @@ final public class MediaCodec {
		// in media/hardware/CryptoAPI.h !
		public static final int CRYPTO_MODE_UNENCRYPTED = 0;
		public static final int CRYPTO_MODE_AES_CTR = 1;
		public static final int CRYPTO_MODE_AES_CBC = 2;

		/**
		* Metadata describing the structure of a (at least partially) encrypted
		@@ -2186,27 +2187,14 @@ final public class MediaCodec {
		* A buffer's data is considered to be partitioned into "subSamples",
		* each subSample starts with a (potentially empty) run of plain,
		* unencrypted bytes followed by a (also potentially empty) run of
		* encrypted bytes.
		* numBytesOfClearData can be null to indicate that all data is encrypted.
		* This information encapsulates per-sample metadata as outlined in
		* ISO/IEC FDIS 23001-7:2011 "Common encryption in ISO base media file format files".
		* encrypted bytes. If pattern encryption applies, each of the latter runs
		* is encrypted only partly, according to a repeating pattern of "encrypt"
		* and "skip" blocks. numBytesOfClearData can be null to indicate that all
		* data is encrypted. This information encapsulates per-sample metadata as
		* outlined in ISO/IEC FDIS 23001-7:2011 "Common encryption in ISO base
		* media file format files".
		*/
		public final static class CryptoInfo {
		public void set(
		int newNumSubSamples,
		@NonNull int[] newNumBytesOfClearData,
		@NonNull int[] newNumBytesOfEncryptedData,
		@NonNull byte[] newKey,
		@NonNull byte[] newIV,
		int newMode) {
		numSubSamples = newNumSubSamples;
		numBytesOfClearData = newNumBytesOfClearData;
		numBytesOfEncryptedData = newNumBytesOfEncryptedData;
		key = newKey;
		iv = newIV;
		mode = newMode;
		}

		/**
		* The number of subSamples that make up the buffer's contents.
		*/
		@@ -2220,7 +2208,7 @@ final public class MediaCodec {
		*/
		public int[] numBytesOfEncryptedData;
		/**
		* A 16-byte opaque key
		* A 16-byte key id
		*/
		public byte[] key;
		/**
		@@ -2229,10 +2217,84 @@ final public class MediaCodec {
		public byte[] iv;
		/**
		* The type of encryption that has been applied,
		* see {@link #CRYPTO_MODE_UNENCRYPTED} and {@link #CRYPTO_MODE_AES_CTR}.
		* see {@link #CRYPTO_MODE_UNENCRYPTED}, {@link #CRYPTO_MODE_AES_CTR}
		* and {@link #CRYPTO_MODE_AES_CBC}
		*/
		public int mode;

		/**
		* Metadata describing encryption pattern for the protected bytes in a subsample.
		*/
		public final static class Pattern {
		/**
		* Number of blocks to be encrypted in the pattern. If zero, pattern
		* encryption is inoperative.
		*/
		private int mEncryptBlocks;

		/**
		* Number of blocks to be skipped (left clear) in the pattern. If zero,
		* pattern encryption is inoperative.
		*/
		private int mSkipBlocks;

		/**
		* Construct a sample encryption pattern given the number of blocks to
		* encrypt and skip in the pattern.
		*/
		public Pattern(int blocksToEncrypt, int blocksToSkip) {
		set(blocksToEncrypt, blocksToSkip);
		}

		/**
		* Set the number of blocks to encrypt and skip in a sample encryption
		* pattern.
		*/
		public void set(int blocksToEncrypt, int blocksToSkip) {
		mEncryptBlocks = blocksToEncrypt;
		mSkipBlocks = blocksToSkip;
		}

		/**
		* Return the number of blocks to skip in a sample encryption pattern.
		*/
		public int getSkipBlocks() {
		return mSkipBlocks;
		}

		/**
		* Return the number of blocks to encrypt in a sample encryption pattern.
		*/
		public int getEncryptBlocks() {
		return mEncryptBlocks;
		}
		};

		/**
		* The pattern applicable to the protected data in each subsample.
		*/
		private Pattern pattern;

		public void set(
		int newNumSubSamples,
		@NonNull int[] newNumBytesOfClearData,
		@NonNull int[] newNumBytesOfEncryptedData,
		@NonNull byte[] newKey,
		@NonNull byte[] newIV,
		int newMode) {
		numSubSamples = newNumSubSamples;
		numBytesOfClearData = newNumBytesOfClearData;
		numBytesOfEncryptedData = newNumBytesOfEncryptedData;
		key = newKey;
		iv = newIV;
		mode = newMode;
		pattern = new Pattern(0, 0);
		}

		public void setPattern(Pattern newPattern) {
		pattern = newPattern;
		}

		@Override
		public String toString() {
		StringBuilder builder = new StringBuilder();