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ArImageMetadata_const_entry
#include <arcore_c_api.h>
Defines a single read-only image metadata entry.
Struct matches ACameraMetadata_const_entry in Android NDK r21.
Summary
Public attributes
|
count
|
uint32_t
Count of elements (NOT count of bytes) in this metadata entry.
|
d
|
const double *
Pointer to data of single double or the first element of the double array.
|
data
|
union ArImageMetadata_const_entry::@0
Pointers to the data held in this metadata entry.
|
f
|
const float *
Pointer to data of single 32-bit float or the first element of the 32-bit float array.
|
i32
|
const int32_t *
Pointer to data of single 32-bit int or the first element of the 32-bit int array.
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i64
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const int64_t *
Pointer to data of single 64-bit int or the first element of the 64-bit int array.
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r
|
|
tag
|
uint32_t
The tag identifying the entry.
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type
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uint8_t
The data type of this metadata entry.
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u8
|
const uint8_t *
Pointer to data of single byte or the first element of the byte array.
|
Public attributes
count
uint32_t ArImageMetadata_const_entry::count
Count of elements (NOT count of bytes) in this metadata entry.
d
const double * ArImageMetadata_const_entry::d
Pointer to data of single double or the first element of the double array.
data
union ArImageMetadata_const_entry::@0 ArImageMetadata_const_entry::data
Pointers to the data held in this metadata entry.
The field type defines which union member pointer is valid.
f
const float * ArImageMetadata_const_entry::f
Pointer to data of single 32-bit float or the first element of the 32-bit float array.
i32
const int32_t * ArImageMetadata_const_entry::i32
Pointer to data of single 32-bit int or the first element of the 32-bit int array.
i64
const int64_t * ArImageMetadata_const_entry::i64
Pointer to data of single 64-bit int or the first element of the 64-bit int array.
tag
uint32_t ArImageMetadata_const_entry::tag
The tag identifying the entry.
type
uint8_t ArImageMetadata_const_entry::type
The data type of this metadata entry.
Determines which data pointer in the union below is valid. See ACAMERA_TYPE_* enum values in the NDK.
u8
const uint8_t * ArImageMetadata_const_entry::u8
Pointer to data of single byte or the first element of the byte array.
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Last updated 2025-07-14 UTC.
[null,null,["Last updated 2025-07-14 UTC."],[[["\u003cp\u003e\u003ccode\u003eArImageMetadata_const_entry\u003c/code\u003e defines a single read-only image metadata entry, mirroring \u003ccode\u003eACameraMetadata_const_entry\u003c/code\u003e in Android NDK r21.\u003c/p\u003e\n"],["\u003cp\u003eIt includes attributes like \u003ccode\u003ecount\u003c/code\u003e, \u003ccode\u003etag\u003c/code\u003e, and \u003ccode\u003etype\u003c/code\u003e to describe the metadata entry.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003edata\u003c/code\u003e attribute is a union containing pointers to different data types (double, float, int, etc.) depending on the \u003ccode\u003etype\u003c/code\u003e field.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003ecount\u003c/code\u003e attribute indicates the number of elements within the metadata entry.\u003c/p\u003e\n"],["\u003cp\u003ePointers like \u003ccode\u003ed\u003c/code\u003e, \u003ccode\u003ef\u003c/code\u003e, \u003ccode\u003ei32\u003c/code\u003e, \u003ccode\u003ei64\u003c/code\u003e, \u003ccode\u003er\u003c/code\u003e, and \u003ccode\u003eu8\u003c/code\u003e provide access to the actual metadata data based on the \u003ccode\u003etype\u003c/code\u003e.\u003c/p\u003e\n"]]],["`ArImageMetadata_const_entry` defines a read-only image metadata entry, similar to `ACameraMetadata_const_entry`. It includes attributes like `count` (element count), `tag` (entry identifier), and `type` (data type). The `data` union holds pointers to various data types: `double` (`d`), `float` (`f`), `int32_t` (`i32`), `int64_t` (`i64`), `ArImageMetadata_rational` (`r`), and `uint8_t` (`u8`). The `type` attribute determines the valid pointer within the `data` union.\n"],null,["# ArImageMetadata_const_entry Struct Reference\n\nArImageMetadata_const_entry\n===========================\n\n`#include \u003carcore_c_api.h\u003e`\n\nDefines a single read-only image metadata entry.\n\nStruct matches `ACameraMetadata_const_entry` in Android NDK r21.\n\nSummary\n-------\n\n| ### Public attributes ||\n|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [count](#count) | `uint32_t` Count of elements (NOT count of bytes) in this metadata entry. |\n| [d](#d) | `const double *` Pointer to data of single double or the first element of the double array. |\n| [data](#data) | `union ArImageMetadata_const_entry::@0` Pointers to the data held in this metadata entry. |\n| [f](#f) | `const float *` Pointer to data of single 32-bit float or the first element of the 32-bit float array. |\n| [i32](#i32) | `const int32_t *` Pointer to data of single 32-bit int or the first element of the 32-bit int array. |\n| [i64](#i64) | `const int64_t *` Pointer to data of single 64-bit int or the first element of the 64-bit int array. |\n| [r](#r) | `const `[ArImageMetadata_rational](/ar/reference/c/struct/ar-image-metadata-rational#struct_ar_image_metadata__rational)` *` Pointer to data of single [ArImageMetadata_rational](/ar/reference/c/struct/ar-image-metadata-rational#struct_ar_image_metadata__rational) or the first element of the [ArImageMetadata_rational](/ar/reference/c/struct/ar-image-metadata-rational#struct_ar_image_metadata__rational) array. |\n| [tag](#tag) | `uint32_t` The tag identifying the entry. |\n| [type](#type) | `uint8_t` The data type of this metadata entry. |\n| [u8](#u8) | `const uint8_t *` Pointer to data of single byte or the first element of the byte array. |\n\nPublic attributes\n-----------------\n\n### count\n\n```gdscript\nuint32_t ArImageMetadata_const_entry::count\n``` \nCount of elements (NOT count of bytes) in this metadata entry. \n\n### d\n\n```gdscript\nconst double * ArImageMetadata_const_entry::d\n``` \nPointer to data of single double or the first element of the double array. \n\n### data\n\n```objective-c\nunion ArImageMetadata_const_entry::@0 ArImageMetadata_const_entry::data\n``` \nPointers to the data held in this metadata entry.\n\nThe field `type` defines which union member pointer is valid. \n\n### f\n\n```gdscript\nconst float * ArImageMetadata_const_entry::f\n``` \nPointer to data of single 32-bit float or the first element of the 32-bit float array. \n\n### i32\n\n```gdscript\nconst int32_t * ArImageMetadata_const_entry::i32\n``` \nPointer to data of single 32-bit int or the first element of the 32-bit int array. \n\n### i64\n\n```gdscript\nconst int64_t * ArImageMetadata_const_entry::i64\n``` \nPointer to data of single 64-bit int or the first element of the 64-bit int array. \n\n### r\n\n```gdscript\nconst ArImageMetadata_rational * ArImageMetadata_const_entry::r\n``` \nPointer to data of single [ArImageMetadata_rational](/ar/reference/c/struct/ar-image-metadata-rational#struct_ar_image_metadata__rational) or the first element of the [ArImageMetadata_rational](/ar/reference/c/struct/ar-image-metadata-rational#struct_ar_image_metadata__rational) array. \n\n### tag\n\n```gdscript\nuint32_t ArImageMetadata_const_entry::tag\n``` \nThe tag identifying the entry. \n\n### type\n\n```gdscript\nuint8_t ArImageMetadata_const_entry::type\n``` \nThe data type of this metadata entry.\n\nDetermines which data pointer in the `union` below is valid. See `ACAMERA_TYPE_*` enum values in the NDK. \n\n### u8\n\n```gdscript\nconst uint8_t * ArImageMetadata_const_entry::u8\n``` \nPointer to data of single byte or the first element of the byte array."]]
