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* Copyright (C) 2017-2018 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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
import @3.2::CameraMetadata;
import @3.3::ICameraDeviceSession;
import @3.3::HalStreamConfiguration;
import @3.2::BufferCache;
* Camera device active session interface.
* Obtained via ICameraDevice::open(), this interface contains the methods to
* configure and request captures from an active camera device.
interface ICameraDeviceSession extends @3.3::ICameraDeviceSession {
* configureStreams_3_4:
* Identical to @3.3::ICameraDeviceSession.configureStreams, except that:
* - The requested configuration includes session parameters.
* @return Status Status code for the operation, one of:
* OK:
* On successful stream configuration.
* If there has been a fatal error and the device is no longer
* operational. Only close() can be called successfully by the
* framework after this error is returned.
* If the requested stream configuration is invalid. Some examples
* of invalid stream configurations include:
* - Including more than 1 INPUT stream
* - Not including any OUTPUT streams
* - Including streams with unsupported formats, or an unsupported
* size for that format.
* - Including too many output streams of a certain format.
* - Unsupported rotation configuration
* - Stream sizes/formats don't satisfy the
* StreamConfigurationMode requirements
* for non-NORMAL mode, or the requested operation_mode is not
* supported by the HAL.
* - Unsupported usage flag
* The camera service cannot filter out all possible illegal stream
* configurations, since some devices may support more simultaneous
* streams or larger stream resolutions than the minimum required
* for a given camera device hardware level. The HAL must return an
* ILLEGAL_ARGUMENT for any unsupported stream set, and then be
* ready to accept a future valid stream configuration in a later
* configureStreams call.
* @return halConfiguration The stream parameters desired by the HAL for
* each stream, including maximum buffers, the usage flags, and the
* override format.
configureStreams_3_4(@3.4::StreamConfiguration requestedConfiguration)
generates (Status status,
@3.4::HalStreamConfiguration halConfiguration);
* processCaptureRequest_3_4:
* Identical to @3.2::ICameraDeviceSession.processCaptureRequest, except that:
* - The capture request can include individual settings for physical camera devices
* backing a logical multi-camera.
* @return status Status code for the operation, one of:
* OK:
* On a successful start to processing the capture request
* If the input is malformed (the settings are empty when not
* allowed, the physical camera settings are invalid, there are 0
* output buffers, etc) and capture processing
* cannot start. Failures during request processing must be
* handled by calling ICameraDeviceCallback::notify(). In case of
* this error, the framework retains responsibility for the
* stream buffers' fences and the buffer handles; the HAL must not
* close the fences or return these buffers with
* ICameraDeviceCallback::processCaptureResult().
* If the camera device has encountered a serious error. After this
* error is returned, only the close() method can be successfully
* called by the framework.
* @return numRequestProcessed Number of requests successfully processed by
* camera HAL. When status is OK, this must be equal to the size of
* requests. When the call fails, this number is the number of requests
* that HAL processed successfully before HAL runs into an error.
processCaptureRequest_3_4(vec<CaptureRequest> requests, vec<BufferCache> cachesToRemove)
generates (Status status, uint32_t numRequestProcessed);