android.hardware.media.bufferpool@2.0 HAL
BufferPool HAL 2.0. This is identical to 1.0 HAL now.
The update will be applied afterwards.
Bug: 112203066
Change-Id: I8f5bbf979116f66357f2bc0f8114697472adf762
diff --git a/media/bufferpool/2.0/IConnection.hal b/media/bufferpool/2.0/IConnection.hal
new file mode 100644
index 0000000..629f83c
--- /dev/null
+++ b/media/bufferpool/2.0/IConnection.hal
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.media.bufferpool@2.0;
+
+/**
+ * A connection to a buffer pool which handles requests from a buffer pool
+ * client. The connection must be made in order to receive buffers from
+ * other buffer pool clients.
+ */
+interface IConnection {
+
+ /**
+ * Retrieves a buffer using bufferId. The method must be called from
+ * receiving side of buffer during transferring only when the specified
+ * buffer is neither cached nor used. This fails if the specified
+ * transaction is not valid.
+ *
+ * @param transactionId Unique transaction id for buffer transferring.
+ * @param bufferId Id of the buffer to be fetched.
+ * @return status The status of the call.
+ * OK - A buffer was fetched successfully.
+ * NO_MEMORY - Memory allocation failure occurred.
+ * NOT_FOUND - A buffer was not found due to invalidation.
+ * CRITICAL_ERROR - Other errors.
+ * @return buffer The actual buffer which is specified with bufferId.
+ */
+ fetch(uint64_t transactionId, uint32_t bufferId) generates
+ (ResultStatus status, Buffer buffer);
+};