AIDL bufferpool implementation (just copy from HIDL impl)
Bug: 254050250
Test: no impact to build
Merged-In: I48841189a8743dcd6533a9e61581e48f0f1717f1
Change-Id: I48841189a8743dcd6533a9e61581e48f0f1717f1
diff --git a/media/bufferpool/aidl/default/BufferStatus.h b/media/bufferpool/aidl/default/BufferStatus.h
new file mode 100644
index 0000000..fa65838
--- /dev/null
+++ b/media/bufferpool/aidl/default/BufferStatus.h
@@ -0,0 +1,230 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_HARDWARE_MEDIA_BUFFERPOOL_V2_0_BUFFERSTATUS_H
+#define ANDROID_HARDWARE_MEDIA_BUFFERPOOL_V2_0_BUFFERSTATUS_H
+
+#include <android/hardware/media/bufferpool/2.0/types.h>
+#include <bufferpool/BufferPoolTypes.h>
+#include <fmq/MessageQueue.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <memory>
+#include <mutex>
+#include <vector>
+#include <list>
+
+namespace android {
+namespace hardware {
+namespace media {
+namespace bufferpool {
+namespace V2_0 {
+namespace implementation {
+
+/** Returns monotonic timestamp in Us since fixed point in time. */
+int64_t getTimestampNow();
+
+bool isMessageLater(uint32_t curMsgId, uint32_t prevMsgId);
+
+bool isBufferInRange(BufferId from, BufferId to, BufferId bufferId);
+
+/**
+ * A collection of buffer status message FMQ for a buffer pool. buffer
+ * ownership/status change messages are sent via the FMQs from the clients.
+ */
+class BufferStatusObserver {
+private:
+ std::map<ConnectionId, std::unique_ptr<BufferStatusQueue>>
+ mBufferStatusQueues;
+
+public:
+ /** Creates a buffer status message FMQ for the specified
+ * connection(client).
+ *
+ * @param connectionId connection Id of the specified client.
+ * @param fmqDescPtr double ptr of created FMQ's descriptor.
+ *
+ * @return OK if FMQ is created successfully.
+ * NO_MEMORY when there is no memory.
+ * CRITICAL_ERROR otherwise.
+ */
+ ResultStatus open(ConnectionId id, const StatusDescriptor** fmqDescPtr);
+
+ /** Closes a buffer status message FMQ for the specified
+ * connection(client).
+ *
+ * @param connectionId connection Id of the specified client.
+ *
+ * @return OK if the specified connection is closed successfully.
+ * CRITICAL_ERROR otherwise.
+ */
+ ResultStatus close(ConnectionId id);
+
+ /** Retrieves all pending FMQ buffer status messages from clients.
+ *
+ * @param messages retrieved pending messages.
+ */
+ void getBufferStatusChanges(std::vector<BufferStatusMessage> &messages);
+};
+
+/**
+ * A buffer status message FMQ for a buffer pool client. Buffer ownership/status
+ * change messages are sent via the fmq to the buffer pool.
+ */
+class BufferStatusChannel {
+private:
+ bool mValid;
+ std::unique_ptr<BufferStatusQueue> mBufferStatusQueue;
+
+public:
+ /**
+ * Connects to a buffer status message FMQ from a descriptor of
+ * the created FMQ.
+ *
+ * @param fmqDesc Descriptor of the created FMQ.
+ */
+ BufferStatusChannel(const StatusDescriptor &fmqDesc);
+
+ /** Returns whether the FMQ is connected successfully. */
+ bool isValid();
+
+ /** Returns whether the FMQ needs to be synced from the buffer pool */
+ bool needsSync();
+
+ /**
+ * Posts a buffer release message to the buffer pool.
+ *
+ * @param connectionId connection Id of the client.
+ * @param pending currently pending buffer release messages.
+ * @param posted posted buffer release messages.
+ */
+ void postBufferRelease(
+ ConnectionId connectionId,
+ std::list<BufferId> &pending, std::list<BufferId> &posted);
+
+ /**
+ * Posts a buffer status message regarding the specified buffer
+ * transfer transaction.
+ *
+ * @param transactionId Id of the specified transaction.
+ * @param bufferId buffer Id of the specified transaction.
+ * @param status new status of the buffer.
+ * @param connectionId connection Id of the client.
+ * @param targetId connection Id of the receiver(only when the sender
+ * posts a status message).
+ * @param pending currently pending buffer release messages.
+ * @param posted posted buffer release messages.
+ *
+ * @return {@code true} when the specified message is posted,
+ * {@code false} otherwise.
+ */
+ bool postBufferStatusMessage(
+ TransactionId transactionId,
+ BufferId bufferId,
+ BufferStatus status,
+ ConnectionId connectionId,
+ ConnectionId targetId,
+ std::list<BufferId> &pending, std::list<BufferId> &posted);
+
+ /**
+ * Posts a buffer invaliadation messge to the buffer pool.
+ *
+ * @param connectionId connection Id of the client.
+ * @param invalidateId invalidation ack to the buffer pool.
+ * if invalidation id is zero, the ack will not be
+ * posted.
+ * @param invalidated sets {@code true} only when the invalidation ack is
+ * posted.
+ */
+ void postBufferInvalidateAck(
+ ConnectionId connectionId,
+ uint32_t invalidateId,
+ bool *invalidated);
+};
+
+/**
+ * A buffer invalidation FMQ for a buffer pool client. Buffer invalidation
+ * messages are received via the fmq from the buffer pool. Buffer invalidation
+ * messages are handled as soon as possible.
+ */
+class BufferInvalidationListener {
+private:
+ bool mValid;
+ std::unique_ptr<BufferInvalidationQueue> mBufferInvalidationQueue;
+
+public:
+ /**
+ * Connects to a buffer invalidation FMQ from a descriptor of the created FMQ.
+ *
+ * @param fmqDesc Descriptor of the created FMQ.
+ */
+ BufferInvalidationListener(const InvalidationDescriptor &fmqDesc);
+
+ /** Retrieves all pending buffer invalidation messages from the buffer pool.
+ *
+ * @param messages retrieved pending messages.
+ */
+ void getInvalidations(std::vector<BufferInvalidationMessage> &messages);
+
+ /** Returns whether the FMQ is connected succesfully. */
+ bool isValid();
+};
+
+/**
+ * A buffer invalidation FMQ for a buffer pool. A buffer pool will send buffer
+ * invalidation messages to the clients via the FMQ. The FMQ is shared among
+ * buffer pool clients.
+ */
+class BufferInvalidationChannel {
+private:
+ bool mValid;
+ std::unique_ptr<BufferInvalidationQueue> mBufferInvalidationQueue;
+
+public:
+ /**
+ * Creates a buffer invalidation FMQ for a buffer pool.
+ */
+ BufferInvalidationChannel();
+
+ /** Returns whether the FMQ is connected succesfully. */
+ bool isValid();
+
+ /**
+ * Retrieves the descriptor of a buffer invalidation FMQ. the descriptor may
+ * be passed to the client for buffer invalidation handling.
+ *
+ * @param fmqDescPtr double ptr of created FMQ's descriptor.
+ */
+ void getDesc(const InvalidationDescriptor **fmqDescPtr);
+
+ /** Posts a buffer invalidation for invalidated buffers.
+ *
+ * @param msgId Invalidation message id which is used when clients send
+ * acks back via BufferStatusMessage
+ * @param fromId The start bufferid of the invalidated buffers(inclusive)
+ * @param toId The end bufferId of the invalidated buffers(inclusive)
+ */
+ void postInvalidation(uint32_t msgId, BufferId fromId, BufferId toId);
+};
+
+} // namespace implementation
+} // namespace V2_0
+} // namespace bufferpool
+} // namespace media
+} // namespace hardware
+} // namespace android
+
+#endif // ANDROID_HARDWARE_MEDIA_BUFFERPOOL_V2_0_BUFFERSTATUS_H