Turn audio into a shareable video. forked from nypublicradio/audiogram

js_native_api.h 27KB

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  1. #ifndef SRC_JS_NATIVE_API_H_
  2. #define SRC_JS_NATIVE_API_H_
  3. // This file needs to be compatible with C compilers.
  4. #include <stddef.h> // NOLINT(modernize-deprecated-headers)
  5. #include <stdbool.h> // NOLINT(modernize-deprecated-headers)
  6. #include "js_native_api_types.h"
  7. // Use INT_MAX, this should only be consumed by the pre-processor anyway.
  8. #define NAPI_VERSION_EXPERIMENTAL 2147483647
  9. #ifndef NAPI_VERSION
  10. #ifdef NAPI_EXPERIMENTAL
  11. #define NAPI_VERSION NAPI_VERSION_EXPERIMENTAL
  12. #else
  13. // The baseline version for N-API.
  14. // The NAPI_VERSION controls which version will be used by default when
  15. // compilling a native addon. If the addon developer specifically wants to use
  16. // functions available in a new version of N-API that is not yet ported in all
  17. // LTS versions, they can set NAPI_VERSION knowing that they have specifically
  18. // depended on that version.
  19. #define NAPI_VERSION 5
  20. #endif
  21. #endif
  22. // If you need __declspec(dllimport), either include <node_api.h> instead, or
  23. // define NAPI_EXTERN as __declspec(dllimport) on the compiler's command line.
  24. #ifndef NAPI_EXTERN
  25. #ifdef _WIN32
  26. #define NAPI_EXTERN __declspec(dllexport)
  27. #else
  28. #define NAPI_EXTERN __attribute__((visibility("default")))
  29. #endif
  30. #endif
  31. #define NAPI_AUTO_LENGTH SIZE_MAX
  32. #ifdef __cplusplus
  33. #define EXTERN_C_START extern "C" {
  34. #define EXTERN_C_END }
  35. #else
  36. #define EXTERN_C_START
  37. #define EXTERN_C_END
  38. #endif
  39. EXTERN_C_START
  40. NAPI_EXTERN napi_status
  41. napi_get_last_error_info(napi_env env,
  42. const napi_extended_error_info** result);
  43. // Getters for defined singletons
  44. NAPI_EXTERN napi_status napi_get_undefined(napi_env env, napi_value* result);
  45. NAPI_EXTERN napi_status napi_get_null(napi_env env, napi_value* result);
  46. NAPI_EXTERN napi_status napi_get_global(napi_env env, napi_value* result);
  47. NAPI_EXTERN napi_status napi_get_boolean(napi_env env,
  48. bool value,
  49. napi_value* result);
  50. // Methods to create Primitive types/Objects
  51. NAPI_EXTERN napi_status napi_create_object(napi_env env, napi_value* result);
  52. NAPI_EXTERN napi_status napi_create_array(napi_env env, napi_value* result);
  53. NAPI_EXTERN napi_status napi_create_array_with_length(napi_env env,
  54. size_t length,
  55. napi_value* result);
  56. NAPI_EXTERN napi_status napi_create_double(napi_env env,
  57. double value,
  58. napi_value* result);
  59. NAPI_EXTERN napi_status napi_create_int32(napi_env env,
  60. int32_t value,
  61. napi_value* result);
  62. NAPI_EXTERN napi_status napi_create_uint32(napi_env env,
  63. uint32_t value,
  64. napi_value* result);
  65. NAPI_EXTERN napi_status napi_create_int64(napi_env env,
  66. int64_t value,
  67. napi_value* result);
  68. NAPI_EXTERN napi_status napi_create_string_latin1(napi_env env,
  69. const char* str,
  70. size_t length,
  71. napi_value* result);
  72. NAPI_EXTERN napi_status napi_create_string_utf8(napi_env env,
  73. const char* str,
  74. size_t length,
  75. napi_value* result);
  76. NAPI_EXTERN napi_status napi_create_string_utf16(napi_env env,
  77. const char16_t* str,
  78. size_t length,
  79. napi_value* result);
  80. NAPI_EXTERN napi_status napi_create_symbol(napi_env env,
  81. napi_value description,
  82. napi_value* result);
  83. NAPI_EXTERN napi_status napi_create_function(napi_env env,
  84. const char* utf8name,
  85. size_t length,
  86. napi_callback cb,
  87. void* data,
  88. napi_value* result);
  89. NAPI_EXTERN napi_status napi_create_error(napi_env env,
  90. napi_value code,
  91. napi_value msg,
  92. napi_value* result);
  93. NAPI_EXTERN napi_status napi_create_type_error(napi_env env,
  94. napi_value code,
  95. napi_value msg,
  96. napi_value* result);
  97. NAPI_EXTERN napi_status napi_create_range_error(napi_env env,
  98. napi_value code,
  99. napi_value msg,
  100. napi_value* result);
  101. // Methods to get the native napi_value from Primitive type
  102. NAPI_EXTERN napi_status napi_typeof(napi_env env,
  103. napi_value value,
  104. napi_valuetype* result);
  105. NAPI_EXTERN napi_status napi_get_value_double(napi_env env,
  106. napi_value value,
  107. double* result);
  108. NAPI_EXTERN napi_status napi_get_value_int32(napi_env env,
  109. napi_value value,
  110. int32_t* result);
  111. NAPI_EXTERN napi_status napi_get_value_uint32(napi_env env,
  112. napi_value value,
  113. uint32_t* result);
  114. NAPI_EXTERN napi_status napi_get_value_int64(napi_env env,
  115. napi_value value,
  116. int64_t* result);
  117. NAPI_EXTERN napi_status napi_get_value_bool(napi_env env,
  118. napi_value value,
  119. bool* result);
  120. // Copies LATIN-1 encoded bytes from a string into a buffer.
  121. NAPI_EXTERN napi_status napi_get_value_string_latin1(napi_env env,
  122. napi_value value,
  123. char* buf,
  124. size_t bufsize,
  125. size_t* result);
  126. // Copies UTF-8 encoded bytes from a string into a buffer.
  127. NAPI_EXTERN napi_status napi_get_value_string_utf8(napi_env env,
  128. napi_value value,
  129. char* buf,
  130. size_t bufsize,
  131. size_t* result);
  132. // Copies UTF-16 encoded bytes from a string into a buffer.
  133. NAPI_EXTERN napi_status napi_get_value_string_utf16(napi_env env,
  134. napi_value value,
  135. char16_t* buf,
  136. size_t bufsize,
  137. size_t* result);
  138. // Methods to coerce values
  139. // These APIs may execute user scripts
  140. NAPI_EXTERN napi_status napi_coerce_to_bool(napi_env env,
  141. napi_value value,
  142. napi_value* result);
  143. NAPI_EXTERN napi_status napi_coerce_to_number(napi_env env,
  144. napi_value value,
  145. napi_value* result);
  146. NAPI_EXTERN napi_status napi_coerce_to_object(napi_env env,
  147. napi_value value,
  148. napi_value* result);
  149. NAPI_EXTERN napi_status napi_coerce_to_string(napi_env env,
  150. napi_value value,
  151. napi_value* result);
  152. // Methods to work with Objects
  153. NAPI_EXTERN napi_status napi_get_prototype(napi_env env,
  154. napi_value object,
  155. napi_value* result);
  156. NAPI_EXTERN napi_status napi_get_property_names(napi_env env,
  157. napi_value object,
  158. napi_value* result);
  159. NAPI_EXTERN napi_status napi_set_property(napi_env env,
  160. napi_value object,
  161. napi_value key,
  162. napi_value value);
  163. NAPI_EXTERN napi_status napi_has_property(napi_env env,
  164. napi_value object,
  165. napi_value key,
  166. bool* result);
  167. NAPI_EXTERN napi_status napi_get_property(napi_env env,
  168. napi_value object,
  169. napi_value key,
  170. napi_value* result);
  171. NAPI_EXTERN napi_status napi_delete_property(napi_env env,
  172. napi_value object,
  173. napi_value key,
  174. bool* result);
  175. NAPI_EXTERN napi_status napi_has_own_property(napi_env env,
  176. napi_value object,
  177. napi_value key,
  178. bool* result);
  179. NAPI_EXTERN napi_status napi_set_named_property(napi_env env,
  180. napi_value object,
  181. const char* utf8name,
  182. napi_value value);
  183. NAPI_EXTERN napi_status napi_has_named_property(napi_env env,
  184. napi_value object,
  185. const char* utf8name,
  186. bool* result);
  187. NAPI_EXTERN napi_status napi_get_named_property(napi_env env,
  188. napi_value object,
  189. const char* utf8name,
  190. napi_value* result);
  191. NAPI_EXTERN napi_status napi_set_element(napi_env env,
  192. napi_value object,
  193. uint32_t index,
  194. napi_value value);
  195. NAPI_EXTERN napi_status napi_has_element(napi_env env,
  196. napi_value object,
  197. uint32_t index,
  198. bool* result);
  199. NAPI_EXTERN napi_status napi_get_element(napi_env env,
  200. napi_value object,
  201. uint32_t index,
  202. napi_value* result);
  203. NAPI_EXTERN napi_status napi_delete_element(napi_env env,
  204. napi_value object,
  205. uint32_t index,
  206. bool* result);
  207. NAPI_EXTERN napi_status
  208. napi_define_properties(napi_env env,
  209. napi_value object,
  210. size_t property_count,
  211. const napi_property_descriptor* properties);
  212. // Methods to work with Arrays
  213. NAPI_EXTERN napi_status napi_is_array(napi_env env,
  214. napi_value value,
  215. bool* result);
  216. NAPI_EXTERN napi_status napi_get_array_length(napi_env env,
  217. napi_value value,
  218. uint32_t* result);
  219. // Methods to compare values
  220. NAPI_EXTERN napi_status napi_strict_equals(napi_env env,
  221. napi_value lhs,
  222. napi_value rhs,
  223. bool* result);
  224. // Methods to work with Functions
  225. NAPI_EXTERN napi_status napi_call_function(napi_env env,
  226. napi_value recv,
  227. napi_value func,
  228. size_t argc,
  229. const napi_value* argv,
  230. napi_value* result);
  231. NAPI_EXTERN napi_status napi_new_instance(napi_env env,
  232. napi_value constructor,
  233. size_t argc,
  234. const napi_value* argv,
  235. napi_value* result);
  236. NAPI_EXTERN napi_status napi_instanceof(napi_env env,
  237. napi_value object,
  238. napi_value constructor,
  239. bool* result);
  240. // Methods to work with napi_callbacks
  241. // Gets all callback info in a single call. (Ugly, but faster.)
  242. NAPI_EXTERN napi_status napi_get_cb_info(
  243. napi_env env, // [in] NAPI environment handle
  244. napi_callback_info cbinfo, // [in] Opaque callback-info handle
  245. size_t* argc, // [in-out] Specifies the size of the provided argv array
  246. // and receives the actual count of args.
  247. napi_value* argv, // [out] Array of values
  248. napi_value* this_arg, // [out] Receives the JS 'this' arg for the call
  249. void** data); // [out] Receives the data pointer for the callback.
  250. NAPI_EXTERN napi_status napi_get_new_target(napi_env env,
  251. napi_callback_info cbinfo,
  252. napi_value* result);
  253. NAPI_EXTERN napi_status
  254. napi_define_class(napi_env env,
  255. const char* utf8name,
  256. size_t length,
  257. napi_callback constructor,
  258. void* data,
  259. size_t property_count,
  260. const napi_property_descriptor* properties,
  261. napi_value* result);
  262. // Methods to work with external data objects
  263. NAPI_EXTERN napi_status napi_wrap(napi_env env,
  264. napi_value js_object,
  265. void* native_object,
  266. napi_finalize finalize_cb,
  267. void* finalize_hint,
  268. napi_ref* result);
  269. NAPI_EXTERN napi_status napi_unwrap(napi_env env,
  270. napi_value js_object,
  271. void** result);
  272. NAPI_EXTERN napi_status napi_remove_wrap(napi_env env,
  273. napi_value js_object,
  274. void** result);
  275. NAPI_EXTERN napi_status napi_create_external(napi_env env,
  276. void* data,
  277. napi_finalize finalize_cb,
  278. void* finalize_hint,
  279. napi_value* result);
  280. NAPI_EXTERN napi_status napi_get_value_external(napi_env env,
  281. napi_value value,
  282. void** result);
  283. // Methods to control object lifespan
  284. // Set initial_refcount to 0 for a weak reference, >0 for a strong reference.
  285. NAPI_EXTERN napi_status napi_create_reference(napi_env env,
  286. napi_value value,
  287. uint32_t initial_refcount,
  288. napi_ref* result);
  289. // Deletes a reference. The referenced value is released, and may
  290. // be GC'd unless there are other references to it.
  291. NAPI_EXTERN napi_status napi_delete_reference(napi_env env, napi_ref ref);
  292. // Increments the reference count, optionally returning the resulting count.
  293. // After this call the reference will be a strong reference because its
  294. // refcount is >0, and the referenced object is effectively "pinned".
  295. // Calling this when the refcount is 0 and the object is unavailable
  296. // results in an error.
  297. NAPI_EXTERN napi_status napi_reference_ref(napi_env env,
  298. napi_ref ref,
  299. uint32_t* result);
  300. // Decrements the reference count, optionally returning the resulting count.
  301. // If the result is 0 the reference is now weak and the object may be GC'd
  302. // at any time if there are no other references. Calling this when the
  303. // refcount is already 0 results in an error.
  304. NAPI_EXTERN napi_status napi_reference_unref(napi_env env,
  305. napi_ref ref,
  306. uint32_t* result);
  307. // Attempts to get a referenced value. If the reference is weak,
  308. // the value might no longer be available, in that case the call
  309. // is still successful but the result is NULL.
  310. NAPI_EXTERN napi_status napi_get_reference_value(napi_env env,
  311. napi_ref ref,
  312. napi_value* result);
  313. NAPI_EXTERN napi_status napi_open_handle_scope(napi_env env,
  314. napi_handle_scope* result);
  315. NAPI_EXTERN napi_status napi_close_handle_scope(napi_env env,
  316. napi_handle_scope scope);
  317. NAPI_EXTERN napi_status
  318. napi_open_escapable_handle_scope(napi_env env,
  319. napi_escapable_handle_scope* result);
  320. NAPI_EXTERN napi_status
  321. napi_close_escapable_handle_scope(napi_env env,
  322. napi_escapable_handle_scope scope);
  323. NAPI_EXTERN napi_status napi_escape_handle(napi_env env,
  324. napi_escapable_handle_scope scope,
  325. napi_value escapee,
  326. napi_value* result);
  327. // Methods to support error handling
  328. NAPI_EXTERN napi_status napi_throw(napi_env env, napi_value error);
  329. NAPI_EXTERN napi_status napi_throw_error(napi_env env,
  330. const char* code,
  331. const char* msg);
  332. NAPI_EXTERN napi_status napi_throw_type_error(napi_env env,
  333. const char* code,
  334. const char* msg);
  335. NAPI_EXTERN napi_status napi_throw_range_error(napi_env env,
  336. const char* code,
  337. const char* msg);
  338. NAPI_EXTERN napi_status napi_is_error(napi_env env,
  339. napi_value value,
  340. bool* result);
  341. // Methods to support catching exceptions
  342. NAPI_EXTERN napi_status napi_is_exception_pending(napi_env env, bool* result);
  343. NAPI_EXTERN napi_status napi_get_and_clear_last_exception(napi_env env,
  344. napi_value* result);
  345. // Methods to work with array buffers and typed arrays
  346. NAPI_EXTERN napi_status napi_is_arraybuffer(napi_env env,
  347. napi_value value,
  348. bool* result);
  349. NAPI_EXTERN napi_status napi_create_arraybuffer(napi_env env,
  350. size_t byte_length,
  351. void** data,
  352. napi_value* result);
  353. NAPI_EXTERN napi_status
  354. napi_create_external_arraybuffer(napi_env env,
  355. void* external_data,
  356. size_t byte_length,
  357. napi_finalize finalize_cb,
  358. void* finalize_hint,
  359. napi_value* result);
  360. NAPI_EXTERN napi_status napi_get_arraybuffer_info(napi_env env,
  361. napi_value arraybuffer,
  362. void** data,
  363. size_t* byte_length);
  364. NAPI_EXTERN napi_status napi_is_typedarray(napi_env env,
  365. napi_value value,
  366. bool* result);
  367. NAPI_EXTERN napi_status napi_create_typedarray(napi_env env,
  368. napi_typedarray_type type,
  369. size_t length,
  370. napi_value arraybuffer,
  371. size_t byte_offset,
  372. napi_value* result);
  373. NAPI_EXTERN napi_status napi_get_typedarray_info(napi_env env,
  374. napi_value typedarray,
  375. napi_typedarray_type* type,
  376. size_t* length,
  377. void** data,
  378. napi_value* arraybuffer,
  379. size_t* byte_offset);
  380. NAPI_EXTERN napi_status napi_create_dataview(napi_env env,
  381. size_t length,
  382. napi_value arraybuffer,
  383. size_t byte_offset,
  384. napi_value* result);
  385. NAPI_EXTERN napi_status napi_is_dataview(napi_env env,
  386. napi_value value,
  387. bool* result);
  388. NAPI_EXTERN napi_status napi_get_dataview_info(napi_env env,
  389. napi_value dataview,
  390. size_t* bytelength,
  391. void** data,
  392. napi_value* arraybuffer,
  393. size_t* byte_offset);
  394. // version management
  395. NAPI_EXTERN napi_status napi_get_version(napi_env env, uint32_t* result);
  396. // Promises
  397. NAPI_EXTERN napi_status napi_create_promise(napi_env env,
  398. napi_deferred* deferred,
  399. napi_value* promise);
  400. NAPI_EXTERN napi_status napi_resolve_deferred(napi_env env,
  401. napi_deferred deferred,
  402. napi_value resolution);
  403. NAPI_EXTERN napi_status napi_reject_deferred(napi_env env,
  404. napi_deferred deferred,
  405. napi_value rejection);
  406. NAPI_EXTERN napi_status napi_is_promise(napi_env env,
  407. napi_value promise,
  408. bool* is_promise);
  409. // Running a script
  410. NAPI_EXTERN napi_status napi_run_script(napi_env env,
  411. napi_value script,
  412. napi_value* result);
  413. // Memory management
  414. NAPI_EXTERN napi_status napi_adjust_external_memory(napi_env env,
  415. int64_t change_in_bytes,
  416. int64_t* adjusted_value);
  417. #if NAPI_VERSION >= 5
  418. // Dates
  419. NAPI_EXTERN napi_status napi_create_date(napi_env env,
  420. double time,
  421. napi_value* result);
  422. NAPI_EXTERN napi_status napi_is_date(napi_env env,
  423. napi_value value,
  424. bool* is_date);
  425. NAPI_EXTERN napi_status napi_get_date_value(napi_env env,
  426. napi_value value,
  427. double* result);
  428. // Add finalizer for pointer
  429. NAPI_EXTERN napi_status napi_add_finalizer(napi_env env,
  430. napi_value js_object,
  431. void* native_object,
  432. napi_finalize finalize_cb,
  433. void* finalize_hint,
  434. napi_ref* result);
  435. #endif // NAPI_VERSION >= 5
  436. #ifdef NAPI_EXPERIMENTAL
  437. // BigInt
  438. NAPI_EXTERN napi_status napi_create_bigint_int64(napi_env env,
  439. int64_t value,
  440. napi_value* result);
  441. NAPI_EXTERN napi_status napi_create_bigint_uint64(napi_env env,
  442. uint64_t value,
  443. napi_value* result);
  444. NAPI_EXTERN napi_status napi_create_bigint_words(napi_env env,
  445. int sign_bit,
  446. size_t word_count,
  447. const uint64_t* words,
  448. napi_value* result);
  449. NAPI_EXTERN napi_status napi_get_value_bigint_int64(napi_env env,
  450. napi_value value,
  451. int64_t* result,
  452. bool* lossless);
  453. NAPI_EXTERN napi_status napi_get_value_bigint_uint64(napi_env env,
  454. napi_value value,
  455. uint64_t* result,
  456. bool* lossless);
  457. NAPI_EXTERN napi_status napi_get_value_bigint_words(napi_env env,
  458. napi_value value,
  459. int* sign_bit,
  460. size_t* word_count,
  461. uint64_t* words);
  462. // Instance data
  463. NAPI_EXTERN napi_status napi_set_instance_data(napi_env env,
  464. void* data,
  465. napi_finalize finalize_cb,
  466. void* finalize_hint);
  467. NAPI_EXTERN napi_status napi_get_instance_data(napi_env env,
  468. void** data);
  469. #endif // NAPI_EXPERIMENTAL
  470. EXTERN_C_END
  471. #endif // SRC_JS_NATIVE_API_H_