obs-studio/libobs/obs-data.h

/******************************************************************************
    Copyright (C) 2023 by Lain Bailey <[email protected]>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/

#pragma once

#include "util/c99defs.h"
#include "media-io/frame-rate.h"

#ifdef __cplusplus
extern "C" {
#endif

struct vec2;
struct vec3;
struct vec4;
struct quat;

/*
 * OBS data settings storage
 *
 *   This is used for retrieving or setting the data settings for things such
 * as sources, encoders, etc.  This is designed for JSON serialization.
 */

struct obs_data;
struct obs_data_item;
struct obs_data_array;
typedef struct obs_data obs_data_t;
typedef struct obs_data_item obs_data_item_t;
typedef struct obs_data_array obs_data_array_t;

enum obs_data_type {
	OBS_DATA_NULL,
	OBS_DATA_STRING,
	OBS_DATA_NUMBER,
	OBS_DATA_BOOLEAN,
	OBS_DATA_OBJECT,
	OBS_DATA_ARRAY
};

enum obs_data_number_type {
	OBS_DATA_NUM_INVALID,
	OBS_DATA_NUM_INT,
	OBS_DATA_NUM_DOUBLE
};

/* ------------------------------------------------------------------------- */
/* Main usage functions */

EXPORT obs_data_t *obs_data_create();
EXPORT obs_data_t *obs_data_create_from_json(const char *json_string);
EXPORT obs_data_t *obs_data_create_from_json_file(const char *json_file);
EXPORT obs_data_t *obs_data_create_from_json_file_safe(const char *json_file,
						       const char *backup_ext);
EXPORT void obs_data_addref(obs_data_t *data);
EXPORT void obs_data_release(obs_data_t *data);

EXPORT const char *obs_data_get_json(obs_data_t *data);
EXPORT const char *obs_data_get_json_with_defaults(obs_data_t *data);
EXPORT const char *obs_data_get_json_pretty(obs_data_t *data);
EXPORT const char *obs_data_get_json_pretty_with_defaults(obs_data_t *data);
EXPORT const char *obs_data_get_last_json(obs_data_t *data);
EXPORT bool obs_data_save_json(obs_data_t *data, const char *file);
EXPORT bool obs_data_save_json_safe(obs_data_t *data, const char *file,
				    const char *temp_ext,
				    const char *backup_ext);
EXPORT bool obs_data_save_json_pretty_safe(obs_data_t *data, const char *file,
					   const char *temp_ext,
					   const char *backup_ext);

EXPORT void obs_data_apply(obs_data_t *target, obs_data_t *apply_data);

EXPORT void obs_data_erase(obs_data_t *data, const char *name);
EXPORT void obs_data_clear(obs_data_t *data);

/* Set functions */
EXPORT void obs_data_set_string(obs_data_t *data, const char *name,
				const char *val);
EXPORT void obs_data_set_int(obs_data_t *data, const char *name, long long val);
EXPORT void obs_data_set_double(obs_data_t *data, const char *name, double val);
EXPORT void obs_data_set_bool(obs_data_t *data, const char *name, bool val);
EXPORT void obs_data_set_obj(obs_data_t *data, const char *name,
			     obs_data_t *obj);
EXPORT void obs_data_set_array(obs_data_t *data, const char *name,
			       obs_data_array_t *array);

/*
 * Creates an obs_data_t * filled with all default values.
 */
EXPORT obs_data_t *obs_data_get_defaults(obs_data_t *data);

/*
 * Default value functions.
 */
EXPORT void obs_data_set_default_string(obs_data_t *data, const char *name,
					const char *val);
EXPORT void obs_data_set_default_int(obs_data_t *data, const char *name,
				     long long val);
EXPORT void obs_data_set_default_double(obs_data_t *data, const char *name,
					double val);
EXPORT void obs_data_set_default_bool(obs_data_t *data, const char *name,
				      bool val);
EXPORT void obs_data_set_default_obj(obs_data_t *data, const char *name,
				     obs_data_t *obj);
EXPORT void obs_data_set_default_array(obs_data_t *data, const char *name,
				       obs_data_array_t *arr);

/*
 * Application overrides
 * Use these to communicate the actual values of settings in case the user
 * settings aren't appropriate
 */
EXPORT void obs_data_set_autoselect_string(obs_data_t *data, const char *name,
					   const char *val);
EXPORT void obs_data_set_autoselect_int(obs_data_t *data, const char *name,
					long long val);
EXPORT void obs_data_set_autoselect_double(obs_data_t *data, const char *name,
					   double val);
EXPORT void obs_data_set_autoselect_bool(obs_data_t *data, const char *name,
					 bool val);
EXPORT void obs_data_set_autoselect_obj(obs_data_t *data, const char *name,
					obs_data_t *obj);
EXPORT void obs_data_set_autoselect_array(obs_data_t *data, const char *name,
					  obs_data_array_t *arr);

/*
 * Get functions
 */
EXPORT const char *obs_data_get_string(obs_data_t *data, const char *name);
EXPORT long long obs_data_get_int(obs_data_t *data, const char *name);
EXPORT double obs_data_get_double(obs_data_t *data, const char *name);
EXPORT bool obs_data_get_bool(obs_data_t *data, const char *name);
EXPORT obs_data_t *obs_data_get_obj(obs_data_t *data, const char *name);
EXPORT obs_data_array_t *obs_data_get_array(obs_data_t *data, const char *name);

EXPORT const char *obs_data_get_default_string(obs_data_t *data,
					       const char *name);
EXPORT long long obs_data_get_default_int(obs_data_t *data, const char *name);
EXPORT double obs_data_get_default_double(obs_data_t *data, const char *name);
EXPORT bool obs_data_get_default_bool(obs_data_t *data, const char *name);
EXPORT obs_data_t *obs_data_get_default_obj(obs_data_t *data, const char *name);
EXPORT obs_data_array_t *obs_data_get_default_array(obs_data_t *data,
						    const char *name);

EXPORT const char *obs_data_get_autoselect_string(obs_data_t *data,
						  const char *name);
EXPORT long long obs_data_get_autoselect_int(obs_data_t *data,
					     const char *name);
EXPORT double obs_data_get_autoselect_double(obs_data_t *data,
					     const char *name);
EXPORT bool obs_data_get_autoselect_bool(obs_data_t *data, const char *name);
EXPORT obs_data_t *obs_data_get_autoselect_obj(obs_data_t *data,
					       const char *name);
EXPORT obs_data_array_t *obs_data_get_autoselect_array(obs_data_t *data,
						       const char *name);

/* Array functions */
EXPORT obs_data_array_t *obs_data_array_create();
EXPORT void obs_data_array_addref(obs_data_array_t *array);
EXPORT void obs_data_array_release(obs_data_array_t *array);

EXPORT size_t obs_data_array_count(obs_data_array_t *array);
EXPORT obs_data_t *obs_data_array_item(obs_data_array_t *array, size_t idx);
EXPORT size_t obs_data_array_push_back(obs_data_array_t *array,
				       obs_data_t *obj);
EXPORT void obs_data_array_insert(obs_data_array_t *array, size_t idx,
				  obs_data_t *obj);
EXPORT void obs_data_array_push_back_array(obs_data_array_t *array,
					   obs_data_array_t *array2);
EXPORT void obs_data_array_erase(obs_data_array_t *array, size_t idx);
EXPORT void obs_data_array_enum(obs_data_array_t *array,
				void (*cb)(obs_data_t *data, void *param),
				void *param);

/* ------------------------------------------------------------------------- */
/* Item status inspection */

EXPORT bool obs_data_has_user_value(obs_data_t *data, const char *name);
EXPORT bool obs_data_has_default_value(obs_data_t *data, const char *name);
EXPORT bool obs_data_has_autoselect_value(obs_data_t *data, const char *name);

EXPORT bool obs_data_item_has_user_value(obs_data_item_t *data);
EXPORT bool obs_data_item_has_default_value(obs_data_item_t *data);
EXPORT bool obs_data_item_has_autoselect_value(obs_data_item_t *data);

/* ------------------------------------------------------------------------- */
/* Clearing data values */

EXPORT void obs_data_unset_user_value(obs_data_t *data, const char *name);
EXPORT void obs_data_unset_default_value(obs_data_t *data, const char *name);
EXPORT void obs_data_unset_autoselect_value(obs_data_t *data, const char *name);

EXPORT void obs_data_item_unset_user_value(obs_data_item_t *data);
EXPORT void obs_data_item_unset_default_value(obs_data_item_t *data);
EXPORT void obs_data_item_unset_autoselect_value(obs_data_item_t *data);

/* ------------------------------------------------------------------------- */
/* Item iteration */

EXPORT obs_data_item_t *obs_data_first(obs_data_t *data);
EXPORT obs_data_item_t *obs_data_item_byname(obs_data_t *data,
					     const char *name);
EXPORT bool obs_data_item_next(obs_data_item_t **item);
EXPORT void obs_data_item_release(obs_data_item_t **item);
EXPORT void obs_data_item_remove(obs_data_item_t **item);

/* Gets Item type */
EXPORT enum obs_data_type obs_data_item_gettype(obs_data_item_t *item);
EXPORT enum obs_data_number_type obs_data_item_numtype(obs_data_item_t *item);
EXPORT const char *obs_data_item_get_name(obs_data_item_t *item);

/* Item set functions */
EXPORT void obs_data_item_set_string(obs_data_item_t **item, const char *val);
EXPORT void obs_data_item_set_int(obs_data_item_t **item, long long val);
EXPORT void obs_data_item_set_double(obs_data_item_t **item, double val);
EXPORT void obs_data_item_set_bool(obs_data_item_t **item, bool val);
EXPORT void obs_data_item_set_obj(obs_data_item_t **item, obs_data_t *val);
EXPORT void obs_data_item_set_array(obs_data_item_t **item,
				    obs_data_array_t *val);

EXPORT void obs_data_item_set_default_string(obs_data_item_t **item,
					     const char *val);
EXPORT void obs_data_item_set_default_int(obs_data_item_t **item,
					  long long val);
EXPORT void obs_data_item_set_default_double(obs_data_item_t **item,
					     double val);
EXPORT void obs_data_item_set_default_bool(obs_data_item_t **item, bool val);
EXPORT void obs_data_item_set_default_obj(obs_data_item_t **item,
					  obs_data_t *val);
EXPORT void obs_data_item_set_default_array(obs_data_item_t **item,
					    obs_data_array_t *val);

EXPORT void obs_data_item_set_autoselect_string(obs_data_item_t **item,
						const char *val);
EXPORT void obs_data_item_set_autoselect_int(obs_data_item_t **item,
					     long long val);
EXPORT void obs_data_item_set_autoselect_double(obs_data_item_t **item,
						double val);
EXPORT void obs_data_item_set_autoselect_bool(obs_data_item_t **item, bool val);
EXPORT void obs_data_item_set_autoselect_obj(obs_data_item_t **item,
					     obs_data_t *val);
EXPORT void obs_data_item_set_autoselect_array(obs_data_item_t **item,
					       obs_data_array_t *val);

/* Item get functions */
EXPORT const char *obs_data_item_get_string(obs_data_item_t *item);
EXPORT long long obs_data_item_get_int(obs_data_item_t *item);
EXPORT double obs_data_item_get_double(obs_data_item_t *item);
EXPORT bool obs_data_item_get_bool(obs_data_item_t *item);
EXPORT obs_data_t *obs_data_item_get_obj(obs_data_item_t *item);
EXPORT obs_data_array_t *obs_data_item_get_array(obs_data_item_t *item);

EXPORT const char *obs_data_item_get_default_string(obs_data_item_t *item);
EXPORT long long obs_data_item_get_default_int(obs_data_item_t *item);
EXPORT double obs_data_item_get_default_double(obs_data_item_t *item);
EXPORT bool obs_data_item_get_default_bool(obs_data_item_t *item);
EXPORT obs_data_t *obs_data_item_get_default_obj(obs_data_item_t *item);
EXPORT obs_data_array_t *obs_data_item_get_default_array(obs_data_item_t *item);

EXPORT const char *obs_data_item_get_autoselect_string(obs_data_item_t *item);
EXPORT long long obs_data_item_get_autoselect_int(obs_data_item_t *item);
EXPORT double obs_data_item_get_autoselect_double(obs_data_item_t *item);
EXPORT bool obs_data_item_get_autoselect_bool(obs_data_item_t *item);
EXPORT obs_data_t *obs_data_item_get_autoselect_obj(obs_data_item_t *item);
EXPORT obs_data_array_t *
obs_data_item_get_autoselect_array(obs_data_item_t *item);

/* ------------------------------------------------------------------------- */
/* Helper functions for certain structures */
EXPORT void obs_data_set_vec2(obs_data_t *data, const char *name,
			      const struct vec2 *val);
EXPORT void obs_data_set_vec3(obs_data_t *data, const char *name,
			      const struct vec3 *val);
EXPORT void obs_data_set_vec4(obs_data_t *data, const char *name,
			      const struct vec4 *val);
EXPORT void obs_data_set_quat(obs_data_t *data, const char *name,
			      const struct quat *val);

EXPORT void obs_data_set_default_vec2(obs_data_t *data, const char *name,
				      const struct vec2 *val);
EXPORT void obs_data_set_default_vec3(obs_data_t *data, const char *name,
				      const struct vec3 *val);
EXPORT void obs_data_set_default_vec4(obs_data_t *data, const char *name,
				      const struct vec4 *val);
EXPORT void obs_data_set_default_quat(obs_data_t *data, const char *name,
				      const struct quat *val);

EXPORT void obs_data_set_autoselect_vec2(obs_data_t *data, const char *name,
					 const struct vec2 *val);
EXPORT void obs_data_set_autoselect_vec3(obs_data_t *data, const char *name,
					 const struct vec3 *val);
EXPORT void obs_data_set_autoselect_vec4(obs_data_t *data, const char *name,
					 const struct vec4 *val);
EXPORT void obs_data_set_autoselect_quat(obs_data_t *data, const char *name,
					 const struct quat *val);

EXPORT void obs_data_get_vec2(obs_data_t *data, const char *name,
			      struct vec2 *val);
EXPORT void obs_data_get_vec3(obs_data_t *data, const char *name,
			      struct vec3 *val);
EXPORT void obs_data_get_vec4(obs_data_t *data, const char *name,
			      struct vec4 *val);
EXPORT void obs_data_get_quat(obs_data_t *data, const char *name,
			      struct quat *val);

EXPORT void obs_data_get_default_vec2(obs_data_t *data, const char *name,
				      struct vec2 *val);
EXPORT void obs_data_get_default_vec3(obs_data_t *data, const char *name,
				      struct vec3 *val);
EXPORT void obs_data_get_default_vec4(obs_data_t *data, const char *name,
				      struct vec4 *val);
EXPORT void obs_data_get_default_quat(obs_data_t *data, const char *name,
				      struct quat *val);

EXPORT void obs_data_get_autoselect_vec2(obs_data_t *data, const char *name,
					 struct vec2 *val);
EXPORT void obs_data_get_autoselect_vec3(obs_data_t *data, const char *name,
					 struct vec3 *val);
EXPORT void obs_data_get_autoselect_vec4(obs_data_t *data, const char *name,
					 struct vec4 *val);
EXPORT void obs_data_get_autoselect_quat(obs_data_t *data, const char *name,
					 struct quat *val);

/* ------------------------------------------------------------------------- */
/* Helper functions for media_frames_per_second/OBS_PROPERTY_FRAME_RATE */
EXPORT void obs_data_set_frames_per_second(obs_data_t *data, const char *name,
					   struct media_frames_per_second fps,
					   const char *option);
EXPORT void
obs_data_set_default_frames_per_second(obs_data_t *data, const char *name,
				       struct media_frames_per_second fps,
				       const char *option);
EXPORT void
obs_data_set_autoselect_frames_per_second(obs_data_t *data, const char *name,
					  struct media_frames_per_second fps,
					  const char *option);

EXPORT bool obs_data_get_frames_per_second(obs_data_t *data, const char *name,
					   struct media_frames_per_second *fps,
					   const char **option);
EXPORT bool
obs_data_get_default_frames_per_second(obs_data_t *data, const char *name,
				       struct media_frames_per_second *fps,
				       const char **option);
EXPORT bool
obs_data_get_autoselect_frames_per_second(obs_data_t *data, const char *name,
					  struct media_frames_per_second *fps,
					  const char **option);

EXPORT void
obs_data_item_set_frames_per_second(obs_data_item_t **item,
				    struct media_frames_per_second fps,
				    const char *option);
EXPORT void
obs_data_item_set_default_frames_per_second(obs_data_item_t **item,
					    struct media_frames_per_second fps,
					    const char *option);
EXPORT void obs_data_item_set_autoselect_frames_per_second(
	obs_data_item_t **item, struct media_frames_per_second fps,
	const char *option);

EXPORT bool
obs_data_item_get_frames_per_second(obs_data_item_t *item,
				    struct media_frames_per_second *fps,
				    const char **option);
EXPORT bool
obs_data_item_get_default_frames_per_second(obs_data_item_t *item,
					    struct media_frames_per_second *fps,
					    const char **option);
EXPORT bool obs_data_item_get_autoselect_frames_per_second(
	obs_data_item_t *item, struct media_frames_per_second *fps,
	const char **option);

/* ------------------------------------------------------------------------- */
/* OBS-specific functions */

static inline obs_data_t *obs_data_newref(obs_data_t *data)
{
	if (data)
		obs_data_addref(data);
	else
		data = obs_data_create();

	return data;
}

#ifdef __cplusplus
}
#endif