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/*
* Copyright (C) 2016 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.camera.device@1.0;
interface ICameraDeviceCallback {
/**
* Notify the camera service of a particular event occurring
* The meaning of each parameter is defined by the value of msgType, and
* documented in the definition of NotifyCallbackMsg.
*
* @param msgType The type of the event.
* @param ext1 The first parameter for the event, if needed.
* @param ext2 The second parameter for the event, if needed.
*/
notifyCallback(NotifyCallbackMsg msgType, int32_t ext1, int32_t ext2);
/**
* Define a memory buffer from the provided handle and size, and return a
* unique identifier for the HAL to use to reference it with.
*
* TODO(b/33269977): Ensure this aligns with design and performance goals.
*
* @param descriptor A native handle that must have exactly one file
* descriptor in it; the file descriptor must be memory mappable to
* bufferSize * bufferCount bytes.
* @param bufferSize The number of bytes a single buffer consists of.
* @param bufferCount The number of contiguous buffers that the descriptor
* contains.
*
* @return memId A integer identifier for this memory buffer, for use with
* data callbacks and unregistering memory.
*/
registerMemory(handle descriptor, uint32_t bufferSize, uint32_t bufferCount)
generates (MemoryId memId);
/**
* Unregister a previously registered memory buffer
*/
unregisterMemory(MemoryId memId);
/**
* Send a buffer of image data to the camera service
*
* @param msgType The kind of image buffer data this call represents.
* @param data A memory handle to the buffer containing the data.
* @param bufferIndex The offset into the memory handle where the buffer
* starts.
*
*/
dataCallback(DataCallbackMsg msgType, MemoryId data, uint32_t bufferIndex);
/**
* Send a buffer of image data to the camera service, with a timestamp
*
* @param msgType The kind of image buffer data this call represents.
* @param data A memory handle to the buffer containing the data.
* @param bufferIndex The offset into the memory handle where the buffer
* starts.
* @param timestamp The time this buffer was captured by the camera, in
* nanoseconds.
*
*/
dataCallbackTimestamp(DataCallbackMsg msgType, MemoryId data, uint32_t bufferIndex,
int64_t timestamp);
};
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