175 lines
6.9 KiB
C
175 lines
6.9 KiB
C
/******************************************************************************
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Copyright (C) 2014 by Hugh Bailey <obs.jim@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#pragma once
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#include "obs.h"
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#ifdef __cplusplus
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#define MODULE_EXPORT extern "C" EXPORT
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#define MODULE_EXTERN extern "C"
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#else
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#define MODULE_EXPORT EXPORT
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#define MODULE_EXTERN extern
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#endif
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/**
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* @file
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* @brief This file is used by modules for module declaration and module
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* exports.
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*
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* @page modules_page Modules
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* @brief Modules or plugins are libraries that can be loaded by libobs and
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* subsequently interact with it.
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*
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* @section modules_overview_sec Overview
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*
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* Modules can provide a wide range of functionality to libobs, they for example
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* can feed captured audio or video to libobs, or interface with an encoder to
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* provide some codec to libobs.
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*
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* @section modules_basic_sec Creating a basic module
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*
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* In order to create a module for libobs you will need to build a shared
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* library that implements a basic interface for libobs to interact with.
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* The following code would create a simple source plugin without localization:
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*
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@code
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#include <obs-module.h>
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OBS_DECLARE_MODULE()
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extern struct obs_source_info my_source;
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bool obs_module_load(void)
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{
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obs_register_source(&my_source);
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return true;
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}
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@endcode
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*
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* If you want to enable localization, you will need to also use the
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* @ref OBS_MODULE_USE_DEFAULT_LOCALE() macro.
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*
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* Other module types:
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* - @ref obs_register_encoder()
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* - @ref obs_register_service()
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* - @ref obs_register_output()
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*
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*/
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/** Required: Declares a libobs module. */
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#define OBS_DECLARE_MODULE() \
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static obs_module_t *obs_module_pointer; \
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MODULE_EXPORT void obs_module_set_pointer(obs_module_t *module); \
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void obs_module_set_pointer(obs_module_t *module) \
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{ \
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obs_module_pointer = module; \
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} \
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obs_module_t *obs_current_module(void) { return obs_module_pointer; } \
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MODULE_EXPORT uint32_t obs_module_ver(void); \
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uint32_t obs_module_ver(void) { return LIBOBS_API_VER; }
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/**
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* Required: Called when the module is loaded. Use this function to load all
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* the sources/encoders/outputs/services for your module, or anything else that
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* may need loading.
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*
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* @return Return true to continue loading the module, otherwise
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* false to indicate failure and unload the module
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*/
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MODULE_EXPORT bool obs_module_load(void);
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/** Optional: Called when the module is unloaded. */
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MODULE_EXPORT void obs_module_unload(void);
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/** Optional: Called when all modules have finished loading */
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MODULE_EXPORT void obs_module_post_load(void);
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/** Called to set the current locale data for the module. */
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MODULE_EXPORT void obs_module_set_locale(const char *locale);
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/** Called to free the current locale data for the module. */
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MODULE_EXPORT void obs_module_free_locale(void);
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/** Optional: Use this macro in a module to use default locale handling. */
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#define OBS_MODULE_USE_DEFAULT_LOCALE(module_name, default_locale) \
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lookup_t *obs_module_lookup = NULL; \
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const char *obs_module_text(const char *val) \
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{ \
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const char *out = val; \
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text_lookup_getstr(obs_module_lookup, val, &out); \
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return out; \
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} \
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bool obs_module_get_string(const char *val, const char **out) \
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{ \
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return text_lookup_getstr(obs_module_lookup, val, out); \
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} \
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void obs_module_set_locale(const char *locale) \
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{ \
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if (obs_module_lookup) \
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text_lookup_destroy(obs_module_lookup); \
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obs_module_lookup = obs_module_load_locale( \
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obs_current_module(), default_locale, locale); \
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} \
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void obs_module_free_locale(void) \
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{ \
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text_lookup_destroy(obs_module_lookup); \
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obs_module_lookup = NULL; \
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}
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/** Helper function for looking up locale if default locale handler was used */
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MODULE_EXTERN const char *obs_module_text(const char *lookup_string);
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/** Helper function for looking up locale if default locale handler was used,
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* returns true if text found, otherwise false */
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MODULE_EXPORT bool obs_module_get_string(const char *lookup_string,
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const char **translated_string);
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/** Helper function that returns the current module */
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MODULE_EXTERN obs_module_t *obs_current_module(void);
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/**
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* Returns the location to a module data file associated with the current
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* module. Free with bfree when complete. Equivalent to:
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* obs_find_module_file(obs_current_module(), file);
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*/
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#define obs_module_file(file) obs_find_module_file(obs_current_module(), file)
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/**
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* Returns the location to a module config file associated with the current
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* module. Free with bfree when complete. Will return NULL if configuration
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* directory is not set. Equivalent to:
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* obs_module_get_config_path(obs_current_module(), file);
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*/
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#define obs_module_config_path(file) \
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obs_module_get_config_path(obs_current_module(), file)
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/**
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* Optional: Declares the author(s) of the module
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*
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* @param name Author name(s)
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*/
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#define OBS_MODULE_AUTHOR(name) \
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MODULE_EXPORT const char *obs_module_author(void); \
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const char *obs_module_author(void) { return name; }
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/** Optional: Returns the full name of the module */
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MODULE_EXPORT const char *obs_module_name(void);
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/** Optional: Returns a description of the module */
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MODULE_EXPORT const char *obs_module_description(void);
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