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| author | aliaspider | 2014-10-30 00:23:30 +0100 |
|---|---|---|
| committer | aliaspider | 2014-10-30 00:23:30 +0100 |
| commit | 804169dd621a3ad3eec1a32ce30350de667fee80 (patch) | |
| tree | 5bce839a3652f6725d50639cccd3f589ee901515 /libretro.h | |
| parent | 5382d193371c8db303d056b87b8ffd51316bf2e0 (diff) | |
| download | snes9x2005-804169dd621a3ad3eec1a32ce30350de667fee80.tar.gz snes9x2005-804169dd621a3ad3eec1a32ce30350de667fee80.tar.bz2 snes9x2005-804169dd621a3ad3eec1a32ce30350de667fee80.zip | |
apply a facelift
Diffstat (limited to 'libretro.h')
| -rw-r--r-- | libretro.h | 866 |
1 files changed, 433 insertions, 433 deletions
@@ -425,9 +425,9 @@ enum retro_mod * passing NULL to video frame callback. */ - /* Environ 4, 5 are no longer supported (GET_VARIABLE / SET_VARIABLES), - * and reserved to avoid possible ABI clash. - */ +/* Environ 4, 5 are no longer supported (GET_VARIABLE / SET_VARIABLES), + * and reserved to avoid possible ABI clash. + */ #define RETRO_ENVIRONMENT_SET_MESSAGE 6 /* const struct retro_message * -- * Sets a message to be displayed in implementation-specific manner @@ -442,415 +442,415 @@ enum retro_mod * way to shutdown the game from a menu item or similar. */ #define RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL 8 - /* const unsigned * -- - * Gives a hint to the frontend how demanding this implementation - * is on a system. E.g. reporting a level of 2 means - * this implementation should run decently on all frontends - * of level 2 and up. - * - * It can be used by the frontend to potentially warn - * about too demanding implementations. - * - * The levels are "floating". - * - * This function can be called on a per-game basis, - * as certain games an implementation can play might be - * particularly demanding. - * If called, it should be called in retro_load_game(). - */ +/* const unsigned * -- + * Gives a hint to the frontend how demanding this implementation + * is on a system. E.g. reporting a level of 2 means + * this implementation should run decently on all frontends + * of level 2 and up. + * + * It can be used by the frontend to potentially warn + * about too demanding implementations. + * + * The levels are "floating". + * + * This function can be called on a per-game basis, + * as certain games an implementation can play might be + * particularly demanding. + * If called, it should be called in retro_load_game(). + */ #define RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY 9 - /* const char ** -- - * Returns the "system" directory of the frontend. - * This directory can be used to store system specific - * content such as BIOSes, configuration data, etc. - * The returned value can be NULL. - * If so, no such directory is defined, - * and it's up to the implementation to find a suitable directory. - * - * NOTE: Some cores used this folder also for "save" data such as - * memory cards, etc, for lack of a better place to put it. - * This is now discouraged, and if possible, cores should try to - * use the new GET_SAVE_DIRECTORY. - */ +/* const char ** -- + * Returns the "system" directory of the frontend. + * This directory can be used to store system specific + * content such as BIOSes, configuration data, etc. + * The returned value can be NULL. + * If so, no such directory is defined, + * and it's up to the implementation to find a suitable directory. + * + * NOTE: Some cores used this folder also for "save" data such as + * memory cards, etc, for lack of a better place to put it. + * This is now discouraged, and if possible, cores should try to + * use the new GET_SAVE_DIRECTORY. + */ #define RETRO_ENVIRONMENT_SET_PIXEL_FORMAT 10 - /* const enum retro_pixel_format * -- - * Sets the internal pixel format used by the implementation. - * The default pixel format is RETRO_PIXEL_FORMAT_0RGB1555. - * This pixel format however, is deprecated (see enum retro_pixel_format). - * If the call returns false, the frontend does not support this pixel - * format. - * - * This function should be called inside retro_load_game() or - * retro_get_system_av_info(). - */ +/* const enum retro_pixel_format * -- + * Sets the internal pixel format used by the implementation. + * The default pixel format is RETRO_PIXEL_FORMAT_0RGB1555. + * This pixel format however, is deprecated (see enum retro_pixel_format). + * If the call returns false, the frontend does not support this pixel + * format. + * + * This function should be called inside retro_load_game() or + * retro_get_system_av_info(). + */ #define RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS 11 - /* const struct retro_input_descriptor * -- - * Sets an array of retro_input_descriptors. - * It is up to the frontend to present this in a usable way. - * The array is terminated by retro_input_descriptor::description - * being set to NULL. - * This function can be called at any time, but it is recommended - * to call it as early as possible. - */ +/* const struct retro_input_descriptor * -- + * Sets an array of retro_input_descriptors. + * It is up to the frontend to present this in a usable way. + * The array is terminated by retro_input_descriptor::description + * being set to NULL. + * This function can be called at any time, but it is recommended + * to call it as early as possible. + */ #define RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK 12 - /* const struct retro_keyboard_callback * -- - * Sets a callback function used to notify core about keyboard events. - */ +/* const struct retro_keyboard_callback * -- + * Sets a callback function used to notify core about keyboard events. + */ #define RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE 13 - /* const struct retro_disk_control_callback * -- - * Sets an interface which frontend can use to eject and insert - * disk images. - * This is used for games which consist of multiple images and - * must be manually swapped out by the user (e.g. PSX). - */ +/* const struct retro_disk_control_callback * -- + * Sets an interface which frontend can use to eject and insert + * disk images. + * This is used for games which consist of multiple images and + * must be manually swapped out by the user (e.g. PSX). + */ #define RETRO_ENVIRONMENT_SET_HW_RENDER 14 - /* struct retro_hw_render_callback * -- - * Sets an interface to let a libretro core render with - * hardware acceleration. - * Should be called in retro_load_game(). - * If successful, libretro cores will be able to render to a - * frontend-provided framebuffer. - * The size of this framebuffer will be at least as large as - * max_width/max_height provided in get_av_info(). - * If HW rendering is used, pass only RETRO_HW_FRAME_BUFFER_VALID or - * NULL to retro_video_refresh_t. - */ +/* struct retro_hw_render_callback * -- + * Sets an interface to let a libretro core render with + * hardware acceleration. + * Should be called in retro_load_game(). + * If successful, libretro cores will be able to render to a + * frontend-provided framebuffer. + * The size of this framebuffer will be at least as large as + * max_width/max_height provided in get_av_info(). + * If HW rendering is used, pass only RETRO_HW_FRAME_BUFFER_VALID or + * NULL to retro_video_refresh_t. + */ #define RETRO_ENVIRONMENT_GET_VARIABLE 15 - /* struct retro_variable * -- - * Interface to acquire user-defined information from environment - * that cannot feasibly be supported in a multi-system way. - * 'key' should be set to a key which has already been set by - * SET_VARIABLES. - * 'data' will be set to a value or NULL. - */ +/* struct retro_variable * -- + * Interface to acquire user-defined information from environment + * that cannot feasibly be supported in a multi-system way. + * 'key' should be set to a key which has already been set by + * SET_VARIABLES. + * 'data' will be set to a value or NULL. + */ #define RETRO_ENVIRONMENT_SET_VARIABLES 16 - /* const struct retro_variable * -- - * Allows an implementation to signal the environment - * which variables it might want to check for later using - * GET_VARIABLE. - * This allows the frontend to present these variables to - * a user dynamically. - * This should be called as early as possible (ideally in - * retro_set_environment). - * - * 'data' points to an array of retro_variable structs - * terminated by a { NULL, NULL } element. - * retro_variable::key should be namespaced to not collide - * with other implementations' keys. E.g. A core called - * 'foo' should use keys named as 'foo_option'. - * retro_variable::value should contain a human readable - * description of the key as well as a '|' delimited list - * of expected values. - * - * The number of possible options should be very limited, - * i.e. it should be feasible to cycle through options - * without a keyboard. - * - * First entry should be treated as a default. - * - * Example entry: - * { "foo_option", "Speed hack coprocessor X; false|true" } - * - * Text before first ';' is description. This ';' must be - * followed by a space, and followed by a list of possible - * values split up with '|'. - * - * Only strings are operated on. The possible values will - * generally be displayed and stored as-is by the frontend. - */ +/* const struct retro_variable * -- + * Allows an implementation to signal the environment + * which variables it might want to check for later using + * GET_VARIABLE. + * This allows the frontend to present these variables to + * a user dynamically. + * This should be called as early as possible (ideally in + * retro_set_environment). + * + * 'data' points to an array of retro_variable structs + * terminated by a { NULL, NULL } element. + * retro_variable::key should be namespaced to not collide + * with other implementations' keys. E.g. A core called + * 'foo' should use keys named as 'foo_option'. + * retro_variable::value should contain a human readable + * description of the key as well as a '|' delimited list + * of expected values. + * + * The number of possible options should be very limited, + * i.e. it should be feasible to cycle through options + * without a keyboard. + * + * First entry should be treated as a default. + * + * Example entry: + * { "foo_option", "Speed hack coprocessor X; false|true" } + * + * Text before first ';' is description. This ';' must be + * followed by a space, and followed by a list of possible + * values split up with '|'. + * + * Only strings are operated on. The possible values will + * generally be displayed and stored as-is by the frontend. + */ #define RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE 17 - /* bool * -- - * Result is set to true if some variables are updated by - * frontend since last call to RETRO_ENVIRONMENT_GET_VARIABLE. - * Variables should be queried with GET_VARIABLE. - */ +/* bool * -- + * Result is set to true if some variables are updated by + * frontend since last call to RETRO_ENVIRONMENT_GET_VARIABLE. + * Variables should be queried with GET_VARIABLE. + */ #define RETRO_ENVIRONMENT_SET_SUPPORT_NO_GAME 18 - /* const bool * -- - * If true, the libretro implementation supports calls to - * retro_load_game() with NULL as argument. - * Used by cores which can run without particular game data. - * This should be called within retro_set_environment() only. - */ +/* const bool * -- + * If true, the libretro implementation supports calls to + * retro_load_game() with NULL as argument. + * Used by cores which can run without particular game data. + * This should be called within retro_set_environment() only. + */ #define RETRO_ENVIRONMENT_GET_LIBRETRO_PATH 19 - /* const char ** -- - * Retrieves the absolute path from where this libretro - * implementation was loaded. - * NULL is returned if the libretro was loaded statically - * (i.e. linked statically to frontend), or if the path cannot be - * determined. - * Mostly useful in cooperation with SET_SUPPORT_NO_GAME as assets can - * be loaded without ugly hacks. - */ +/* const char ** -- + * Retrieves the absolute path from where this libretro + * implementation was loaded. + * NULL is returned if the libretro was loaded statically + * (i.e. linked statically to frontend), or if the path cannot be + * determined. + * Mostly useful in cooperation with SET_SUPPORT_NO_GAME as assets can + * be loaded without ugly hacks. + */ - /* Environment 20 was an obsolete version of SET_AUDIO_CALLBACK. - * It was not used by any known core at the time, - * and was removed from the API. */ +/* Environment 20 was an obsolete version of SET_AUDIO_CALLBACK. + * It was not used by any known core at the time, + * and was removed from the API. */ #define RETRO_ENVIRONMENT_SET_AUDIO_CALLBACK 22 - /* const struct retro_audio_callback * -- - * Sets an interface which is used to notify a libretro core about audio - * being available for writing. - * The callback can be called from any thread, so a core using this must - * have a thread safe audio implementation. - * It is intended for games where audio and video are completely - * asynchronous and audio can be generated on the fly. - * This interface is not recommended for use with emulators which have - * highly synchronous audio. - * - * The callback only notifies about writability; the libretro core still - * has to call the normal audio callbacks - * to write audio. The audio callbacks must be called from within the - * notification callback. - * The amount of audio data to write is up to the implementation. - * Generally, the audio callback will be called continously in a loop. - * - * Due to thread safety guarantees and lack of sync between audio and - * video, a frontend can selectively disallow this interface based on - * internal configuration. A core using this interface must also - * implement the "normal" audio interface. - * - * A libretro core using SET_AUDIO_CALLBACK should also make use of - * SET_FRAME_TIME_CALLBACK. - */ +/* const struct retro_audio_callback * -- + * Sets an interface which is used to notify a libretro core about audio + * being available for writing. + * The callback can be called from any thread, so a core using this must + * have a thread safe audio implementation. + * It is intended for games where audio and video are completely + * asynchronous and audio can be generated on the fly. + * This interface is not recommended for use with emulators which have + * highly synchronous audio. + * + * The callback only notifies about writability; the libretro core still + * has to call the normal audio callbacks + * to write audio. The audio callbacks must be called from within the + * notification callback. + * The amount of audio data to write is up to the implementation. + * Generally, the audio callback will be called continously in a loop. + * + * Due to thread safety guarantees and lack of sync between audio and + * video, a frontend can selectively disallow this interface based on + * internal configuration. A core using this interface must also + * implement the "normal" audio interface. + * + * A libretro core using SET_AUDIO_CALLBACK should also make use of + * SET_FRAME_TIME_CALLBACK. + */ #define RETRO_ENVIRONMENT_SET_FRAME_TIME_CALLBACK 21 - /* const struct retro_frame_time_callback * -- - * Lets the core know how much time has passed since last - * invocation of retro_run(). - * The frontend can tamper with the timing to fake fast-forward, - * slow-motion, frame stepping, etc. - * In this case the delta time will use the reference value - * in frame_time_callback.. - */ +/* const struct retro_frame_time_callback * -- + * Lets the core know how much time has passed since last + * invocation of retro_run(). + * The frontend can tamper with the timing to fake fast-forward, + * slow-motion, frame stepping, etc. + * In this case the delta time will use the reference value + * in frame_time_callback.. + */ #define RETRO_ENVIRONMENT_GET_RUMBLE_INTERFACE 23 - /* struct retro_rumble_interface * -- - * Gets an interface which is used by a libretro core to set - * state of rumble motors in controllers. - * A strong and weak motor is supported, and they can be - * controlled indepedently. - */ +/* struct retro_rumble_interface * -- + * Gets an interface which is used by a libretro core to set + * state of rumble motors in controllers. + * A strong and weak motor is supported, and they can be + * controlled indepedently. + */ #define RETRO_ENVIRONMENT_GET_INPUT_DEVICE_CAPABILITIES 24 - /* uint64_t * -- - * Gets a bitmask telling which device type are expected to be - * handled properly in a call to retro_input_state_t. - * Devices which are not handled or recognized always return - * 0 in retro_input_state_t. - * Example bitmask: caps = (1 << RETRO_DEVICE_JOYPAD) | (1 << RETRO_DEVICE_ANALOG). - * Should only be called in retro_run(). - */ +/* uint64_t * -- + * Gets a bitmask telling which device type are expected to be + * handled properly in a call to retro_input_state_t. + * Devices which are not handled or recognized always return + * 0 in retro_input_state_t. + * Example bitmask: caps = (1 << RETRO_DEVICE_JOYPAD) | (1 << RETRO_DEVICE_ANALOG). + * Should only be called in retro_run(). + */ #define RETRO_ENVIRONMENT_GET_SENSOR_INTERFACE (25 | RETRO_ENVIRONMENT_EXPERIMENTAL) - /* struct retro_sensor_interface * -- - * Gets access to the sensor interface. - * The purpose of this interface is to allow - * setting state related to sensors such as polling rate, - * enabling/disable it entirely, etc. - * Reading sensor state is done via the normal - * input_state_callback API. - */ +/* struct retro_sensor_interface * -- + * Gets access to the sensor interface. + * The purpose of this interface is to allow + * setting state related to sensors such as polling rate, + * enabling/disable it entirely, etc. + * Reading sensor state is done via the normal + * input_state_callback API. + */ #define RETRO_ENVIRONMENT_GET_CAMERA_INTERFACE (26 | RETRO_ENVIRONMENT_EXPERIMENTAL) - /* struct retro_camera_callback * -- - * Gets an interface to a video camera driver. - * A libretro core can use this interface to get access to a - * video camera. - * New video frames are delivered in a callback in same - * thread as retro_run(). - * - * GET_CAMERA_INTERFACE should be called in retro_load_game(). - * - * Depending on the camera implementation used, camera frames - * will be delivered as a raw framebuffer, - * or as an OpenGL texture directly. - * - * The core has to tell the frontend here which types of - * buffers can be handled properly. - * An OpenGL texture can only be handled when using a - * libretro GL core (SET_HW_RENDER). - * It is recommended to use a libretro GL core when - * using camera interface. - * - * The camera is not started automatically. The retrieved start/stop - * functions must be used to explicitly - * start and stop the camera driver. - */ +/* struct retro_camera_callback * -- + * Gets an interface to a video camera driver. + * A libretro core can use this interface to get access to a + * video camera. + * New video frames are delivered in a callback in same + * thread as retro_run(). + * + * GET_CAMERA_INTERFACE should be called in retro_load_game(). + * + * Depending on the camera implementation used, camera frames + * will be delivered as a raw framebuffer, + * or as an OpenGL texture directly. + * + * The core has to tell the frontend here which types of + * buffers can be handled properly. + * An OpenGL texture can only be handled when using a + * libretro GL core (SET_HW_RENDER). + * It is recommended to use a libretro GL core when + * using camera interface. + * + * The camera is not started automatically. The retrieved start/stop + * functions must be used to explicitly + * start and stop the camera driver. + */ #define RETRO_ENVIRONMENT_GET_LOG_INTERFACE 27 - /* struct retro_log_callback * -- - * Gets an interface for logging. This is useful for - * logging in a cross-platform way - * as certain platforms cannot use use stderr for logging. - * It also allows the frontend to - * show logging information in a more suitable way. - * If this interface is not used, libretro cores should - * log to stderr as desired. - */ +/* struct retro_log_callback * -- + * Gets an interface for logging. This is useful for + * logging in a cross-platform way + * as certain platforms cannot use use stderr for logging. + * It also allows the frontend to + * show logging information in a more suitable way. + * If this interface is not used, libretro cores should + * log to stderr as desired. + */ #define RETRO_ENVIRONMENT_GET_PERF_INTERFACE 28 - /* struct retro_perf_callback * -- - * Gets an interface for performance counters. This is useful - * for performance logging in a cross-platform way and for detecting - * architecture-specific features, such as SIMD support. - */ +/* struct retro_perf_callback * -- + * Gets an interface for performance counters. This is useful + * for performance logging in a cross-platform way and for detecting + * architecture-specific features, such as SIMD support. + */ #define RETRO_ENVIRONMENT_GET_LOCATION_INTERFACE 29 - /* struct retro_location_callback * -- - * Gets access to the location interface. - * The purpose of this interface is to be able to retrieve - * location-based information from the host device, - * such as current latitude / longitude. - */ +/* struct retro_location_callback * -- + * Gets access to the location interface. + * The purpose of this interface is to be able to retrieve + * location-based information from the host device, + * such as current latitude / longitude. + */ #define RETRO_ENVIRONMENT_GET_CONTENT_DIRECTORY 30 - /* const char ** -- - * Returns the "content" directory of the frontend. - * This directory can be used to store specific assets that the - * core relies upon, such as art assets, - * input data, etc etc. - * The returned value can be NULL. - * If so, no such directory is defined, - * and it's up to the implementation to find a suitable directory. - */ +/* const char ** -- + * Returns the "content" directory of the frontend. + * This directory can be used to store specific assets that the + * core relies upon, such as art assets, + * input data, etc etc. + * The returned value can be NULL. + * If so, no such directory is defined, + * and it's up to the implementation to find a suitable directory. + */ #define RETRO_ENVIRONMENT_GET_SAVE_DIRECTORY 31 - /* const char ** -- - * Returns the "save" directory of the frontend. - * This directory can be used to store SRAM, memory cards, - * high scores, etc, if the libretro core - * cannot use the regular memory interface (retro_get_memory_data()). - * - * NOTE: libretro cores used to check GET_SYSTEM_DIRECTORY for - * similar things before. - * They should still check GET_SYSTEM_DIRECTORY if they want to - * be backwards compatible. - * The path here can be NULL. It should only be non-NULL if the - * frontend user has set a specific save path. - */ +/* const char ** -- + * Returns the "save" directory of the frontend. + * This directory can be used to store SRAM, memory cards, + * high scores, etc, if the libretro core + * cannot use the regular memory interface (retro_get_memory_data()). + * + * NOTE: libretro cores used to check GET_SYSTEM_DIRECTORY for + * similar things before. + * They should still check GET_SYSTEM_DIRECTORY if they want to + * be backwards compatible. + * The path here can be NULL. It should only be non-NULL if the + * frontend user has set a specific save path. + */ #define RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO 32 - /* const struct retro_system_av_info * -- - * Sets a new av_info structure. This can only be called from - * within retro_run(). - * This should *only* be used if the core is completely altering the - * internal resolutions, aspect ratios, timings, sampling rate, etc. - * Calling this can require a full reinitialization of video/audio - * drivers in the frontend, - * - * so it is important to call it very sparingly, and usually only with - * the users explicit consent. - * An eventual driver reinitialize will happen so that video and - * audio callbacks - * happening after this call within the same retro_run() call will - * target the newly initialized driver. - * - * This callback makes it possible to support configurable resolutions - * in games, which can be useful to - * avoid setting the "worst case" in max_width/max_height. - * - * ***HIGHLY RECOMMENDED*** Do not call this callback every time - * resolution changes in an emulator core if it's - * expected to be a temporary change, for the reasons of possible - * driver reinitialization. - * This call is not a free pass for not trying to provide - * correct values in retro_get_system_av_info(). If you need to change - * things like aspect ratio or nominal width/height, - * use RETRO_ENVIRONMENT_SET_GEOMETRY, which is a softer variant - * of SET_SYSTEM_AV_INFO. - * - * If this returns false, the frontend does not acknowledge a - * changed av_info struct. - */ +/* const struct retro_system_av_info * -- + * Sets a new av_info structure. This can only be called from + * within retro_run(). + * This should *only* be used if the core is completely altering the + * internal resolutions, aspect ratios, timings, sampling rate, etc. + * Calling this can require a full reinitialization of video/audio + * drivers in the frontend, + * + * so it is important to call it very sparingly, and usually only with + * the users explicit consent. + * An eventual driver reinitialize will happen so that video and + * audio callbacks + * happening after this call within the same retro_run() call will + * target the newly initialized driver. + * + * This callback makes it possible to support configurable resolutions + * in games, which can be useful to + * avoid setting the "worst case" in max_width/max_height. + * + * ***HIGHLY RECOMMENDED*** Do not call this callback every time + * resolution changes in an emulator core if it's + * expected to be a temporary change, for the reasons of possible + * driver reinitialization. + * This call is not a free pass for not trying to provide + * correct values in retro_get_system_av_info(). If you need to change + * things like aspect ratio or nominal width/height, + * use RETRO_ENVIRONMENT_SET_GEOMETRY, which is a softer variant + * of SET_SYSTEM_AV_INFO. + * + * If this returns false, the frontend does not acknowledge a + * changed av_info struct. + */ #define RETRO_ENVIRONMENT_SET_PROC_ADDRESS_CALLBACK 33 - /* const struct retro_get_proc_address_interface * -- - * Allows a libretro core to announce support for the - * get_proc_address() interface. - * This interface allows for a standard way to extend libretro where - * use of environment calls are too indirect, - * e.g. for cases where the frontend wants to call directly into the core. - * - * If a core wants to expose this interface, SET_PROC_ADDRESS_CALLBACK - * **MUST** be called from within retro_set_environment(). - */ +/* const struct retro_get_proc_address_interface * -- + * Allows a libretro core to announce support for the + * get_proc_address() interface. + * This interface allows for a standard way to extend libretro where + * use of environment calls are too indirect, + * e.g. for cases where the frontend wants to call directly into the core. + * + * If a core wants to expose this interface, SET_PROC_ADDRESS_CALLBACK + * **MUST** be called from within retro_set_environment(). + */ #define RETRO_ENVIRONMENT_SET_SUBSYSTEM_INFO 34 - /* const struct retro_subsystem_info * -- - * This environment call introduces the concept of libretro "subsystems". - * A subsystem is a variant of a libretro core which supports - * different kinds of games. - * The purpose of this is to support e.g. emulators which might - * have special needs, e.g. Super Nintendo's Super GameBoy, Sufami Turbo. - * It can also be used to pick among subsystems in an explicit way - * if the libretro implementation is a multi-system emulator itself. - * - * Loading a game via a subsystem is done with retro_load_game_special(), - * and this environment call allows a libretro core to expose which - * subsystems are supported for use with retro_load_game_special(). - * A core passes an array of retro_game_special_info which is terminated - * with a zeroed out retro_game_special_info struct. - * - * If a core wants to use this functionality, SET_SUBSYSTEM_INFO - * **MUST** be called from within retro_set_environment(). - */ +/* const struct retro_subsystem_info * -- + * This environment call introduces the concept of libretro "subsystems". + * A subsystem is a variant of a libretro core which supports + * different kinds of games. + * The purpose of this is to support e.g. emulators which might + * have special needs, e.g. Super Nintendo's Super GameBoy, Sufami Turbo. + * It can also be used to pick among subsystems in an explicit way + * if the libretro implementation is a multi-system emulator itself. + * + * Loading a game via a subsystem is done with retro_load_game_special(), + * and this environment call allows a libretro core to expose which + * subsystems are supported for use with retro_load_game_special(). + * A core passes an array of retro_game_special_info which is terminated + * with a zeroed out retro_game_special_info struct. + * + * If a core wants to use this functionality, SET_SUBSYSTEM_INFO + * **MUST** be called from within retro_set_environment(). + */ #define RETRO_ENVIRONMENT_SET_CONTROLLER_INFO 35 - /* const struct retro_controller_info * -- - * This environment call lets a libretro core tell the frontend - * which controller types are recognized in calls to - * retro_set_controller_port_device(). - * - * Some emulators such as Super Nintendo - * support multiple lightgun types which must be specifically - * selected from. - * It is therefore sometimes necessary for a frontend to be able - * to tell the core about a special kind of input device which is - * not covered by the libretro input API. - * - * In order for a frontend to understand the workings of an input device, - * it must be a specialized type - * of the generic device types already defined in the libretro API. - * - * Which devices are supported can vary per input port. - * The core must pass an array of const struct retro_controller_info which - * is terminated with a blanked out struct. Each element of the struct - * corresponds to an ascending port index to - * retro_set_controller_port_device(). - * Even if special device types are set in the libretro core, - * libretro should only poll input based on the base input device types. - */ +/* const struct retro_controller_info * -- + * This environment call lets a libretro core tell the frontend + * which controller types are recognized in calls to + * retro_set_controller_port_device(). + * + * Some emulators such as Super Nintendo + * support multiple lightgun types which must be specifically + * selected from. + * It is therefore sometimes necessary for a frontend to be able + * to tell the core about a special kind of input device which is + * not covered by the libretro input API. + * + * In order for a frontend to understand the workings of an input device, + * it must be a specialized type + * of the generic device types already defined in the libretro API. + * + * Which devices are supported can vary per input port. + * The core must pass an array of const struct retro_controller_info which + * is terminated with a blanked out struct. Each element of the struct + * corresponds to an ascending port index to + * retro_set_controller_port_device(). + * Even if special device types are set in the libretro core, + * libretro should only poll input based on the base input device types. + */ #define RETRO_ENVIRONMENT_SET_MEMORY_MAPS (36 | RETRO_ENVIRONMENT_EXPERIMENTAL) - /* const struct retro_memory_map * -- - * This environment call lets a libretro core tell the frontend - * about the memory maps this core emulates. - * This can be used to implement, for example, cheats in a core-agnostic way. - * - * Should only be used by emulators; it doesn't make much sense for - * anything else. - * It is recommended to expose all relevant pointers through - * retro_get_memory_* as well. - * - * Can be called from retro_init and retro_load_game. - */ +/* const struct retro_memory_map * -- + * This environment call lets a libretro core tell the frontend + * about the memory maps this core emulates. + * This can be used to implement, for example, cheats in a core-agnostic way. + * + * Should only be used by emulators; it doesn't make much sense for + * anything else. + * It is recommended to expose all relevant pointers through + * retro_get_memory_* as well. + * + * Can be called from retro_init and retro_load_game. + */ #define RETRO_ENVIRONMENT_SET_GEOMETRY 37 - /* const struct retro_game_geometry * -- - * This environment call is similar to SET_SYSTEM_AV_INFO for changing - * video parameters, but provides a guarantee that drivers will not be - * reinitialized. - * This can only be called from within retro_run(). - * - * The purpose of this call is to allow a core to alter nominal - * width/heights as well as aspect ratios on-the-fly, which can be - * useful for some emulators to change in run-time. - * - * max_width/max_height arguments are ignored and cannot be changed - * with this call as this could potentially require a reinitialization or a - * non-constant time operation. - * If max_width/max_height are to be changed, SET_SYSTEM_AV_INFO is required. - * - * A frontend must guarantee that this environment call completes in - * constant time. - */ +/* const struct retro_game_geometry * -- + * This environment call is similar to SET_SYSTEM_AV_INFO for changing + * video parameters, but provides a guarantee that drivers will not be + * reinitialized. + * This can only be called from within retro_run(). + * + * The purpose of this call is to allow a core to alter nominal + * width/heights as well as aspect ratios on-the-fly, which can be + * useful for some emulators to change in run-time. + * + * max_width/max_height arguments are ignored and cannot be changed + * with this call as this could potentially require a reinitialization or a + * non-constant time operation. + * If max_width/max_height are to be changed, SET_SYSTEM_AV_INFO is required. + * + * A frontend must guarantee that this environment call completes in + * constant time. + */ #define RETRO_ENVIRONMENT_GET_USERNAME 38 - /* const char ** - * Returns the specified username of the frontend, if specified by the user. - * This username can be used as a nickname for a core that has online facilities - * or any other mode where personalization of the user is desirable. - * The returned value can be NULL. - * If this environ callback is used by a core that requires a valid username, - * a default username should be specified by the core. - */ +/* const char ** + * Returns the specified username of the frontend, if specified by the user. + * This username can be used as a nickname for a core that has online facilities + * or any other mode where personalization of the user is desirable. + * The returned value can be NULL. + * If this environ callback is used by a core that requires a valid username, + * a default username should be specified by the core. + */ #define RETRO_ENVIRONMENT_GET_LANGUAGE 39 - /* unsigned * -- - * Returns the specified language of the frontend, if specified by the user. - * It can be used by the core for localization purposes. - */ +/* unsigned * -- + * Returns the specified language of the frontend, if specified by the user. + * It can be used by the core for localization purposes. + */ #define RETRO_MEMDESC_CONST (1 << 0) /* The frontend will never change this memory area once retro_load_game has returned. */ #define RETRO_MEMDESC_BIGENDIAN (1 << 1) /* The memory area contains big endian data. Default is little endian. */ @@ -877,7 +877,7 @@ struct retro_memory_descriptor * open bus). No flags should be set if the pointer is NULL. * It's recommended to minimize the number of descriptors if possible, * but not mandatory. */ - void *ptr; + void* ptr; size_t offset; /* This is the location in the emulated address space @@ -934,7 +934,7 @@ struct retro_memory_descriptor * would refer to. * The length can't be used for that purpose; the frontend may want * to append arbitrary data to an address, without a separator. */ - const char *addrspace; + const char* addrspace; }; /* The frontend may use the largest value of 'start'+'select' in a @@ -977,7 +977,7 @@ struct retro_memory_descriptor struct retro_memory_map { - const struct retro_memory_descriptor *descriptors; + const struct retro_memory_descriptor* descriptors; unsigned num_descriptors; }; @@ -986,7 +986,7 @@ struct retro_controller_description /* Human-readable description of the controller. Even if using a generic * input device type, this can be set to the particular device type the * core uses. */ - const char *desc; + const char* desc; /* Device type passed to retro_set_controller_port_device(). If the device * type is a sub-class of a generic input device type, use the @@ -998,14 +998,14 @@ struct retro_controller_description struct retro_controller_info { - const struct retro_controller_description *types; + const struct retro_controller_description* types; unsigned num_types; }; struct retro_subsystem_memory_info { /* The extension associated with a memory type, e.g. "psram". */ - const char *extension; + const char* extension; /* The memory type for retro_get_memory(). This should be at * least 0x100 to avoid conflict with standardized @@ -1016,10 +1016,10 @@ struct retro_subsystem_memory_info struct retro_subsystem_rom_info { /* Describes what the content is (SGB BIOS, GB ROM, etc). */ - const char *desc; + const char* desc; /* Same definition as retro_get_system_info(). */ - const char *valid_extensions; + const char* valid_extensions; /* Same definition as retro_get_system_info(). */ bool need_fullpath; @@ -1033,21 +1033,21 @@ struct retro_subsystem_rom_info /* Content can have multiple associated persistent * memory types (retro_get_memory()). */ - const struct retro_subsystem_memory_info *memory; + const struct retro_subsystem_memory_info* memory; unsigned num_memory; }; struct retro_subsystem_info { /* Human-readable string of the subsystem type, e.g. "Super GameBoy" */ - const char *desc; + const char* desc; /* A computer friendly short string identifier for the subsystem type. * This name must be [a-z]. * E.g. if desc is "Super GameBoy", this can be "sgb". * This identifier can be used for command-line interfaces, etc. */ - const char *ident; + const char* ident; /* Infos for each content file. The first entry is assumed to be the * "most significant" content for frontend purposes. @@ -1055,7 +1055,7 @@ struct retro_subsystem_info * as it is the most "significant" content to a user. * If a frontend creates new file paths based on the content used * (e.g. savestates), it should use the path for the first ROM to do so. */ - const struct retro_subsystem_rom_info *roms; + const struct retro_subsystem_rom_info* roms; /* Number of content files associated with a subsystem. */ unsigned num_roms; @@ -1080,7 +1080,7 @@ typedef void (*retro_proc_address_t)(void); * e.g. if void retro_foo(void); exists, the symbol must be called "retro_foo". * The returned function pointer must be cast to the corresponding type. */ -typedef retro_proc_address_t (*retro_get_proc_address_t)(const char *sym); +typedef retro_proc_address_t (*retro_get_proc_address_t)(const char* sym); struct retro_get_proc_address_interface { @@ -1099,7 +1099,7 @@ enum retro_log_level /* Logging function. Takes log level argument as well. */ typedef void (*retro_log_printf_t)(enum retro_log_level level, - const char *fmt, ...); + const char* fmt, ...); struct retro_log_callback { @@ -1131,7 +1131,7 @@ typedef int64_t retro_time_t; struct retro_perf_counter { - const char *ident; + const char* ident; retro_perf_tick_t start; retro_perf_tick_t total; retro_perf_tick_t call_cnt; @@ -1163,13 +1163,13 @@ typedef void (*retro_perf_log_t)(void); * retro_perf_counter must be 0. * Registering can be called multiple times. To avoid calling to * frontend redundantly, you can check registered field first. */ -typedef void (*retro_perf_register_t)(struct retro_perf_counter *counter); +typedef void (*retro_perf_register_t)(struct retro_perf_counter* counter); /* Starts a registered counter. */ -typedef void (*retro_perf_start_t)(struct retro_perf_counter *counter); +typedef void (*retro_perf_start_t)(struct retro_perf_counter* counter); /* Stops a registered counter. */ -typedef void (*retro_perf_stop_t)(struct retro_perf_counter *counter); +typedef void (*retro_perf_stop_t)(struct retro_perf_counter* counter); /* For convenience it can be useful to wrap register, start and stop in macros. * E.g.: @@ -1235,7 +1235,7 @@ enum retro_sensor_action typedef bool (*retro_set_sensor_state_t)(unsigned port, enum retro_sensor_action action, unsigned rate); -typedef float (*retro_sensor_get_input_t)(unsigned port, unsigned id); +typedef float(*retro_sensor_get_input_t)(unsigned port, unsigned id); struct retro_sensor_interface { @@ -1267,7 +1267,7 @@ typedef void (*retro_camera_lifetime_status_t)(void); * Width, height and pitch are similar to retro_video_refresh_t. * First pixel is top-left origin. */ -typedef void (*retro_camera_frame_raw_framebuffer_t)(const uint32_t *buffer, +typedef void (*retro_camera_frame_raw_framebuffer_t)(const uint32_t* buffer, unsigned width, unsigned height, size_t pitch); /* A callback for when OpenGL textures are used. @@ -1289,7 +1289,7 @@ typedef void (*retro_camera_frame_raw_framebuffer_t)(const uint32_t *buffer, * the API definition. */ typedef void (*retro_camera_frame_opengl_texture_t)(unsigned texture_id, - unsigned texture_target, const float *affine); + unsigned texture_target, const float* affine); struct retro_camera_callback { @@ -1344,8 +1344,8 @@ typedef void (*retro_location_stop_t)(void); /* Get the position of the current location. Will set parameters to * 0 if no new location update has happened since the last time. */ -typedef bool (*retro_location_get_position_t)(double *lat, double *lon, - double *horiz_accuracy, double *vert_accuracy); +typedef bool (*retro_location_get_position_t)(double* lat, double* lon, + double* horiz_accuracy, double* vert_accuracy); /* Callback which signals when the location driver is initialized * and/or deinitialized. @@ -1446,7 +1446,7 @@ typedef void (*retro_hw_context_reset_t)(void); typedef uintptr_t (*retro_hw_get_current_framebuffer_t)(void); /* Get a symbol from HW context. */ -typedef retro_proc_address_t (*retro_hw_get_proc_address_t)(const char *sym); +typedef retro_proc_address_t (*retro_hw_get_proc_address_t)(const char* sym); enum retro_hw_context_type { @@ -1563,7 +1563,7 @@ struct retro_hw_render_callback * character, character should be 0. */ typedef void (*retro_keyboard_event_t)(bool down, unsigned keycode, - uint32_t character, uint16_t key_modifiers); + uint32_t character, uint16_t key_modifiers); struct retro_keyboard_callback { @@ -1594,7 +1594,7 @@ typedef bool (*retro_get_eject_state_t)(void); /* Gets current disk index. First disk is index 0. * If return value is >= get_num_images(), no disk is currently inserted. */ -typedef unsigned (*retro_get_image_index_t)(void); +typedef unsigned(*retro_get_image_index_t)(void); /* Sets image index. Can only be called when disk is ejected. * The implementation supports setting "no disk" by using an @@ -1603,7 +1603,7 @@ typedef unsigned (*retro_get_image_index_t)(void); typedef bool (*retro_set_image_index_t)(unsigned index); /* Gets total number of images which are available to use. */ -typedef unsigned (*retro_get_num_images_t)(void); +typedef unsigned(*retro_get_num_images_t)(void); struct retro_game_info; @@ -1620,7 +1620,7 @@ struct retro_game_info; * Index 1 will be removed, and the new index is 3. */ typedef bool (*retro_replace_image_index_t)(unsigned index, - const struct retro_game_info *info); + const struct retro_game_info* info); /* Adds a new valid index (get_num_images()) to the internal disk list. * This will increment subsequent return values from get_num_images() by 1. @@ -1667,7 +1667,7 @@ enum retro_pixel_format struct retro_message { - const char *msg; /* Message to be displayed. */ + const char* msg; /* Message to be displayed. */ unsigned frames; /* Duration in frames of message. */ }; @@ -1685,7 +1685,7 @@ struct retro_input_descriptor /* Human readable description for parameters. * The pointer must remain valid until * retro_unload_game() is called. */ - const char *description; + const char* description; }; struct retro_system_info @@ -1693,11 +1693,11 @@ struct retro_system_info /* All pointers are owned by libretro implementation, and pointers must * remain valid until retro_deinit() is called. */ - const char *library_name; /* Descriptive name of library. Should not + const char* library_name; /* Descriptive name of library. Should not * contain any version numbers, etc. */ - const char *library_version; /* Descriptive version of core. */ + const char* library_version; /* Descriptive version of core. */ - const char *valid_extensions; /* A string listing probably content + const char* valid_extensions; /* A string listing probably content * extensions the core will be able to * load, separated with pipe. * I.e. "bin|rom|iso". @@ -1759,31 +1759,31 @@ struct retro_variable * delimited by semicolons as so: * "key1=value1;key2=value2;..." */ - const char *key; + const char* key; /* Value to be obtained. If key does not exist, it is set to NULL. */ - const char *value; + const char* value; }; struct retro_game_info { - const char *path; /* Path to game, UTF-8 encoded. + const char* path; /* Path to game, UTF-8 encoded. * Usually used as a reference. * May be NULL if rom was loaded from stdin * or similar. * retro_system_info::need_fullpath guaranteed * that this path is valid. */ - const void *data; /* Memory buffer of loaded game. Will be NULL + const void* data; /* Memory buffer of loaded game. Will be NULL * if need_fullpath was set. */ size_t size; /* Size of memory buffer. */ - const char *meta; /* String of implementation specific meta-data. */ + const char* meta; /* String of implementation specific meta-data. */ }; /* Callbacks */ /* Environment callback. Gives implementations a way of performing * uncommon tasks. Extensible. */ -typedef bool (*retro_environment_t)(unsigned cmd, void *data); +typedef bool (*retro_environment_t)(unsigned cmd, void* data); /* Render a frame. Pixel format is 15-bit 0RGB1555 native endian * unless changed (see RETRO_ENVIRONMENT_SET_PIXEL_FORMAT). @@ -1796,8 +1796,8 @@ typedef bool (*retro_environment_t)(unsigned cmd, void *data); * Certain graphic APIs, such as OpenGL ES, do not like textures * that are not packed in memory. */ -typedef void (*retro_video_refresh_t)(const void *data, unsigned width, - unsigned height, size_t pitch); +typedef void (*retro_video_refresh_t)(const void* data, unsigned width, + unsigned height, size_t pitch); /* Renders a single audio frame. Should only be used if implementation * generates a single sample at a time. @@ -1811,7 +1811,7 @@ typedef void (*retro_audio_sample_t)(int16_t left, int16_t right); * I.e. int16_t buf[4] = { l, r, l, r }; would be 2 frames. * Only one of the audio callbacks must ever be used. */ -typedef size_t (*retro_audio_sample_batch_t)(const int16_t *data, +typedef size_t (*retro_audio_sample_batch_t)(const int16_t* data, size_t frames); /* Polls input. */ @@ -1825,7 +1825,7 @@ typedef void (*retro_input_poll_t)(void); * will still use the higher level RETRO_DEVICE_JOYPAD to request input. */ typedef int16_t (*retro_input_state_t)(unsigned port, unsigned device, - unsigned index, unsigned id); + unsigned index, unsigned id); /* Sets callbacks. retro_set_environment() is guaranteed to be called * before retro_init(). @@ -1850,7 +1850,7 @@ unsigned retro_api_version(void); /* Gets statically known system info. Pointers provided in *info * must be statically allocated. * Can be called at any time, even before retro_init(). */ -void retro_get_system_info(struct retro_system_info *info); +void retro_get_system_info(struct retro_system_info* info); /* Gets information about system audio/video timings and geometry. * Can be called only after retro_load_game() has successfully completed. @@ -1858,7 +1858,7 @@ void retro_get_system_info(struct retro_system_info *info); * variable if needed. * E.g. geom.aspect_ratio might not be initialized if core doesn't * desire a particular aspect ratio. */ -void retro_get_system_av_info(struct retro_system_av_info *info); +void retro_get_system_av_info(struct retro_system_av_info* info); /* Sets device to be used for player 'port'. * By default, RETRO_DEVICE_JOYPAD is assumed to be plugged into all @@ -1893,20 +1893,20 @@ size_t retro_serialize_size(void); /* Serializes internal state. If failed, or size is lower than * retro_serialize_size(), it should return false, true otherwise. */ -bool retro_serialize(void *data, size_t size); -bool retro_unserialize(const void *data, size_t size); +bool retro_serialize(void* data, size_t size); +bool retro_unserialize(const void* data, size_t size); void retro_cheat_reset(void); -void retro_cheat_set(unsigned index, bool enabled, const char *code); +void retro_cheat_set(unsigned index, bool enabled, const char* code); /* Loads a game. */ -bool retro_load_game(const struct retro_game_info *game); +bool retro_load_game(const struct retro_game_info* game); /* Loads a "special" kind of game. Should not be used, * except in extreme cases. */ bool retro_load_game_special( - unsigned game_type, - const struct retro_game_info *info, size_t num_info + unsigned game_type, + const struct retro_game_info* info, size_t num_info ); /* Unloads a currently loaded game. */ @@ -1916,7 +1916,7 @@ void retro_unload_game(void); unsigned retro_get_region(void); /* Gets region of memory. */ -void *retro_get_memory_data(unsigned id); +void* retro_get_memory_data(unsigned id); size_t retro_get_memory_size(unsigned id); #ifdef __cplusplus |