/*
* Copyright (C) 2015 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.
*/
/**
* @addtogroup Camera
* @{
*/
/**
* @file NdkCaptureRequest.h
*/
/*
* This file defines an NDK API.
* Do not remove methods.
* Do not change method signatures.
* Do not change the value of constants.
* Do not change the size of any of the classes defined in here.
* Do not reference types that are not part of the NDK.
* Do not #include files that aren't part of the NDK.
*/
#include <sys/cdefs.h>
#include <android/native_window.h>
#include "NdkCameraError.h"
#include "NdkCameraMetadata.h"
#ifndef _NDK_CAPTURE_REQUEST_H
#define _NDK_CAPTURE_REQUEST_H
__BEGIN_DECLS
#if __ANDROID_API__ >= 24
// Container for output targets
typedef struct ACameraOutputTargets ACameraOutputTargets;
// Container for a single output target
typedef struct ACameraOutputTarget ACameraOutputTarget;
/**
* ACaptureRequest is an opaque type that contains settings and output targets needed to capture
* a single image from camera device.
*
* <p>ACaptureRequest contains the configuration for the capture hardware (sensor, lens, flash),
* the processing pipeline, the control algorithms, and the output buffers. Also
* contains the list of target {@link ANativeWindow}s to send image data to for this
* capture.</p>
*
* <p>ACaptureRequest is created by {@link ACameraDevice_createCaptureRequest}.
*
* <p>ACaptureRequest is given to {@link ACameraCaptureSession_capture} or
* {@link ACameraCaptureSession_setRepeatingRequest} to capture images from a camera.</p>
*
* <p>Each request can specify a different subset of target {@link ANativeWindow}s for the
* camera to send the captured data to. All the {@link ANativeWindow}s used in a request must
* be part of the {@link ANativeWindow} list given to the last call to
* {@link ACameraDevice_createCaptureSession}, when the request is submitted to the
* session.</p>
*
* <p>For example, a request meant for repeating preview might only include the
* {@link ANativeWindow} for the preview SurfaceView or SurfaceTexture, while a
* high-resolution still capture would also include a {@link ANativeWindow} from a
* {@link AImageReader} configured for high-resolution JPEG images.</p>
*
* @see ACameraDevice_createCaptureRequest
* @see ACameraCaptureSession_capture
* @see ACameraCaptureSession_setRepeatingRequest
*/
typedef struct ACaptureRequest ACaptureRequest;
/**
* Create a ACameraOutputTarget object.
*
* <p>The ACameraOutputTarget is used in {@link ACaptureRequest_addTarget} method to add an output
* {@link ANativeWindow} to ACaptureRequest. Use {@link ACameraOutputTarget_free} to free the object
* and its memory after application no longer needs the {@link ACameraOutputTarget}.</p>
*
* @param window the {@link ANativeWindow} to be associated with the {@link ACameraOutputTarget}
* @param output the output {@link ACameraOutputTarget} will be stored here if the
* method call succeeds.
*
* @return <ul>
* <li>{@link ACAMERA_OK} if the method call succeeds. The created ACameraOutputTarget will
* be filled in the output argument.</li>
* <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if window or output is NULL.</li></ul>
*
* @see ACaptureRequest_addTarget
*/
camera_status_t ACameraOutputTarget_create(ANativeWindow* window, ACameraOutputTarget** output);
/**
* Free a ACameraOutputTarget object.
*
* @param output the {@link ACameraOutputTarget} to be freed.
*
* @see ACameraOutputTarget_create
*/
void ACameraOutputTarget_free(ACameraOutputTarget* output);
/**
* Add an {@link ACameraOutputTarget} object to {@link ACaptureRequest}.
*
* @param request the {@link ACaptureRequest} of interest.
* @param output the output {@link ACameraOutputTarget} to be added to capture request.
*
* @return <ul>
* <li>{@link ACAMERA_OK} if the method call succeeds.</li>
* <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request or output is NULL.</li></ul>
*/
camera_status_t ACaptureRequest_addTarget(ACaptureRequest* request,
const ACameraOutputTarget* output);
/**
* Remove an {@link ACameraOutputTarget} object from {@link ACaptureRequest}.
*
* <p>This method has no effect if the ACameraOutputTarget does not exist in ACaptureRequest.</p>
*
* @param request the {@link ACaptureRequest} of interest.
* @param output the output {@link ACameraOutputTarget} to be removed from capture request.
*
* @return <ul>
* <li>{@link ACAMERA_OK} if the method call succeeds.</li>
* <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request or output is NULL.</li></ul>
*/
camera_status_t ACaptureRequest_removeTarget(ACaptureRequest* request,
const ACameraOutputTarget* output);
/**
* Get a metadata entry from input {@link ACaptureRequest}.
*
* <p>The memory of the data field in returned entry is managed by camera framework. Do not
* attempt to free it.</p>
*
* @param request the {@link ACaptureRequest} of interest.
* @param tag the tag value of the camera metadata entry to be get.
* @param entry the output {@link ACameraMetadata_const_entry} will be filled here if the method
* call succeeeds.
*
* @return <ul>
* <li>{@link ACAMERA_OK} if the method call succeeds.</li>
* <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if metadata or entry is NULL.</li>
* <li>{@link ACAMERA_ERROR_METADATA_NOT_FOUND} if the capture request does not contain an
* entry of input tag value.</li></ul>
*/
camera_status_t ACaptureRequest_getConstEntry(
const ACaptureRequest* request, uint32_t tag, ACameraMetadata_const_entry* entry);
/*
* List all the entry tags in input {@link ACaptureRequest}.
*
* @param request the {@link ACaptureRequest} of interest.
* @param numEntries number of metadata entries in input {@link ACaptureRequest}
* @param tags the tag values of the metadata entries. Length of tags is returned in numEntries
* argument. The memory is managed by ACaptureRequest itself and must NOT be free/delete
* by application. Calling ACaptureRequest_setEntry_* methods will invalidate previous
* output of ACaptureRequest_getAllTags. Do not access tags after calling
* ACaptureRequest_setEntry_*. To get new list of tags after updating capture request,
* application must call ACaptureRequest_getAllTags again. Do NOT access tags after
* calling ACaptureRequest_free.
*
* @return <ul>
* <li>{@link ACAMERA_OK} if the method call succeeds.</li>
* <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request, numEntries or tags is NULL.</li>
* <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons.</li></ul>
*/
camera_status_t ACaptureRequest_getAllTags(
const ACaptureRequest* request, /*out*/int32_t* numTags, /*out*/const uint32_t** tags);
/**
* Set/change a camera capture control entry with unsigned 8 bits data type.
*
* <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
*
* @param request the {@link ACaptureRequest} of interest.
* @param tag the tag value of the camera metadata entry to be set.
* @param count number of elements to be set in data argument
* @param data the entries to be set/change in the capture request.
*
* @return <ul>
* <li>{@link ACAMERA_OK} if the method call succeeds.</li>
* <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
* zero while data is NULL, the data type of the tag is not unsigned 8 bits, or
* the tag is not controllable by application.</li></ul>
*/
camera_status_t ACaptureRequest_setEntry_u8(
ACaptureRequest* request, uint32_t tag, uint32_t count, const uint8_t* data);
/**
* Set/change a camera capture control entry with signed 32 bits data type.
*
* <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
*
* @param request the {@link ACaptureRequest} of interest.
* @param tag the tag value of the camera metadata entry to be set.
* @param count number of elements to be set in data argument
* @param data the entries to be set/change in the capture request.
*
* @return <ul>
* <li>{@link ACAMERA_OK} if the method call succeeds.</li>
* <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
* zero while data is NULL, the data type of the tag is not signed 32 bits, or
* the tag is not controllable by application.</li></ul>
*/
camera_status_t ACaptureRequest_setEntry_i32(
ACaptureRequest* request, uint32_t tag, uint32_t count, const int32_t* data);
/**
* Set/change a camera capture control entry with float data type.
*
* <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
*
* @param request the {@link ACaptureRequest} of interest.
* @param tag the tag value of the camera metadata entry to be set.
* @param count number of elements to be set in data argument
* @param data the entries to be set/change in the capture request.
*
* @return <ul>
* <li>{@link ACAMERA_OK} if the method call succeeds.</li>
* <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
* zero while data is NULL, the data type of the tag is not float, or
* the tag is not controllable by application.</li></ul>
*/
camera_status_t ACaptureRequest_setEntry_float(
ACaptureRequest* request, uint32_t tag, uint32_t count, const float* data);
/**
* Set/change a camera capture control entry with signed 64 bits data type.
*
* <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
*
* @param request the {@link ACaptureRequest} of interest.
* @param tag the tag value of the camera metadata entry to be set.
* @param count number of elements to be set in data argument
* @param data the entries to be set/change in the capture request.
*
* @return <ul>
* <li>{@link ACAMERA_OK} if the method call succeeds.</li>
* <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
* zero while data is NULL, the data type of the tag is not signed 64 bits, or
* the tag is not controllable by application.</li></ul>
*/
camera_status_t ACaptureRequest_setEntry_i64(
ACaptureRequest* request, uint32_t tag, uint32_t count, const int64_t* data);
/**
* Set/change a camera capture control entry with double data type.
*
* <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
*
* @param request the {@link ACaptureRequest} of interest.
* @param tag the tag value of the camera metadata entry to be set.
* @param count number of elements to be set in data argument
* @param data the entries to be set/change in the capture request.
*
* @return <ul>
* <li>{@link ACAMERA_OK} if the method call succeeds.</li>
* <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
* zero while data is NULL, the data type of the tag is not double, or
* the tag is not controllable by application.</li></ul>
*/
camera_status_t ACaptureRequest_setEntry_double(
ACaptureRequest* request, uint32_t tag, uint32_t count, const double* data);
/**
* Set/change a camera capture control entry with rational data type.
*
* <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
*
* @param request the {@link ACaptureRequest} of interest.
* @param tag the tag value of the camera metadata entry to be set.
* @param count number of elements to be set in data argument
* @param data the entries to be set/change in the capture request.
*
* @return <ul>
* <li>{@link ACAMERA_OK} if the method call succeeds.</li>
* <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
* zero while data is NULL, the data type of the tag is not rational, or
* the tag is not controllable by application.</li></ul>
*/
camera_status_t ACaptureRequest_setEntry_rational(
ACaptureRequest* request, uint32_t tag, uint32_t count,
const ACameraMetadata_rational* data);
/**
* Free a {@link ACaptureRequest} structure.
*
* @param request the {@link ACaptureRequest} to be freed.
*/
void ACaptureRequest_free(ACaptureRequest* request);
#endif /* __ANDROID_API__ >= 24 */
__END_DECLS
#endif /* _NDK_CAPTURE_REQUEST_H */
/** @} */