diff --git a/include/ndk/NdkImageReader.h b/include/ndk/NdkImageReader.h
index 8d72c28..a158da9 100644
--- a/include/ndk/NdkImageReader.h
+++ b/include/ndk/NdkImageReader.h
@@ -300,6 +300,127 @@
 
 #endif /* __ANDROID_API__ >= 24 */
 
+#if __ANDROID_API__ >= 26
+
+/**
+ * AImageReader constructor similar to {@link AImageReader_new} that takes an additional parameter
+ * for the consumer usage. All other parameters and the return values are identical to those passed
+ * to {@line AImageReader_new}.
+ *
+ * @param usage0 specifies how the consumer will access the AImage, using combination of the
+ *            AHARDWAREBUFFER_USAGE0 flags described in {@link hardware_buffer.h}.
+ *            Passing {@link AHARDWAREBUFFER_USAGE0_CPU_READ_OFTEN} is equivalent to calling
+ *            {@link AImageReader_new} with the same parameters. Note that consumers that do not
+ *            require CPU access to the buffer should omit {@link
+ *            AHARDWAREBUFFER_USAGE0_CPU_READ_OFTEN} to improve performance.
+ * @param usage1 specifies how the consumer will access the AImage, using combination of the
+ *            AHARDWAREBUFFER_USAGE1 flags described in {@link hardware_buffer.h}.
+ *
+ * @see AImage
+ * @see AImageReader_new
+ * @see AHardwareBuffer
+ */
+media_status_t AImageReader_newWithUsage(
+        int32_t width, int32_t height, int32_t format, uint64_t usage0,
+        uint64_t usage1, int32_t maxImages, /*out*/ AImageReader** reader);
+
+/*
+ * Acquire the next {@link AImage} from the image reader's queue asynchronously.
+ *
+ * <p>AImageReader acquire method similar to {@link AImageReader_acquireNextImage} that takes an
+ * additional parameter for the sync fence. All other parameters and the return values are
+ * identical to those passed to {@link AImageReader_acquireNextImage}.</p>
+ *
+ * @param acquireFenceFd A sync fence fd defined in {@link sync.h}, which is used to signal when the
+ *         buffer is ready to consume. When synchronization fence is not needed, fence will be set
+ *         to -1 and the {@link AImage} returned is ready for use immediately. Otherwise, user shall
+ *         use syscalls such as {@code poll()}, {@code epoll()}, {@code select()} to wait for the
+ *         fence fd to change status before attempting to access the {@link AImage} returned.
+ *
+ * @see sync.h
+ * @see sync_get_fence_info
+ */
+media_status_t AImageReader_acquireNextImageAsync(
+        AImageReader* reader, /*out*/AImage** image, /*out*/int* acquireFenceFd);
+
+/*
+ * Acquire the latest {@link AImage} from the image reader's queue asynchronously, dropping older
+ * images.
+ *
+ * <p>AImageReader acquire method similar to {@link AImageReader_acquireLatestImage} that takes an
+ * additional parameter for the sync fence. All other parameters and the return values are
+ * identical to those passed to {@link AImageReader_acquireLatestImage}.</p>
+ *
+ * @param acquireFenceFd A sync fence fd defined in {@link sync.h}, which is used to signal when the
+ *         buffer is ready to consume. When synchronization fence is not needed, fence will be set
+ *         to -1 and the {@link AImage} returned is ready for use immediately. Otherwise, user shall
+ *         use syscalls such as {@code poll()}, {@code epoll()}, {@code select()} to wait for the
+ *         fence fd to change status before attempting to access the {@link AImage} returned.
+ *
+ * @see sync.h
+ * @see sync_get_fence_info
+ */
+media_status_t AImageReader_acquireLatestImageAsync(
+        AImageReader* reader, /*out*/AImage** image, /*out*/int* acquireFenceFd);
+/**
+ * The definition of {@link AImageReader} buffer removed callback.
+ *
+ * @param context The optional application context provided by user in
+ *                {@link AImageReader_setBufferRemovedListener}.
+ * @param reader The {@link AImageReader} of interest.
+ * @param buffer The {@link AHardwareBuffer} that is being removed from this image reader.
+ */
+typedef void (*AImageReader_BufferRemovedCallback)(void* context,
+        AImageReader* reader,
+        AHardwareBuffer* buffer);
+
+typedef struct AImageReader_BufferRemovedListener {
+    /// optional application context.
+    void*                      context;
+
+    /**
+     * This callback is called when an old {@link AHardwareBuffer} is about to be removed from the
+     * image reader.
+     *
+     * <p>Note that registering this callback is optional unless the user holds on extra reference
+     * to {@link AHardwareBuffer} returned from {@link AImage_getHardwareBuffer} by calling {@link
+     * AHardwareBuffer_acquire} or creating external graphic objects, such as EglImage, from it.</p>
+     *
+     * <p>If the callback is registered, the {@link AImageReader} will hold on the last of its
+     * references to the {@link AHardwareBuffer} until this callback returns. User can use the
+     * callback to get notified that it becomes the last owner of the buffer. It is up to the user
+     * to decide to either 1) immediately release all of its references to the buffer; or 2) keep
+     * using the buffer and release it in future. Note that, if option 2 if used, user of this API
+     * is responsible to deallocate the buffer properly by calling {@link AHardwareBuffer_release}.
+     * </p>
+     *
+     * @see AHardwareBuffer_release
+     * @see AImage_getHardwareBuffer
+     */
+    AImageReader_BufferRemovedCallback onBufferRemoved;
+} AImageReader_BufferRemovedListener;
+
+/**
+ * Set the onBufferRemoved listener of this image reader.
+ *
+ * <p>Note that calling this method will replace previously registered listeners.</p>
+ *
+ * @param reader The image reader of interest.
+ * @param listener the {@link AImageReader_BufferRemovedListener} to be registered. Set this to
+ * NULL if application no longer needs to listen to buffer removed events.
+ *
+ * @return <ul>
+ *         <li>{@link AMEDIA_OK} if the method call succeeds.</li>
+ *         <li>{@link AMEDIA_ERROR_INVALID_PARAMETER} if reader is NULL.</li></ul>
+ *
+ * @see AImage_getHardwareBuffer
+ */
+media_status_t AImageReader_setBufferRemovedListener(
+        AImageReader* reader, AImageReader_BufferRemovedListener* listener);
+
+#endif /* __ANDROID_API__ >= 26 */
+
+
 #ifdef __cplusplus
 } // extern "C"
 #endif