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Update libretro header

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This commit is contained in:
twinaphex 2013-04-08 02:53:06 +02:00
parent 6412450afa
commit 019611c22f
1 changed files with 247 additions and 21 deletions
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268
libretro.h Normal file → Executable file
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@ -3,6 +3,7 @@
#include <stdint.h>
#include <stddef.h>
#include <limits.h>
// Hack applied for MSVC when compiling in C89 mode as it isn't C99 compliant.
#ifdef __cplusplus
@ -18,7 +19,7 @@ extern "C" {
#endif
// Used for checking API/ABI mismatches that can break libretro implementations.
// It is not incremented for compatible changes.
// It is not incremented for compatible changes to the API.
#define RETRO_API_VERSION 1
// Libretro's fundamental device abstractions.
@ -49,6 +50,28 @@ extern "C" {
// Only use ANALOG type when polling for analog values of the axes.
#define RETRO_DEVICE_ANALOG 5
// Abstracts the concept of a pointing mechanism, e.g. touch.
// This allows libretro to query in absolute coordinates where on the screen a mouse (or something similar) is being placed.
// For a touch centric device, coordinates reported are the coordinates of the press.
//
// Coordinates in X and Y are reported as:
// [-0x7fff, 0x7fff]: -0x7fff corresponds to the far left/top of the screen,
// and 0x7fff corresponds to the far right/bottom of the screen.
// The "screen" is here defined as area that is passed to the frontend and later displayed on the monitor.
// The frontend is free to scale/resize this screen as it sees fit, however,
// (X, Y) = (-0x7fff, -0x7fff) will correspond to the top-left pixel of the game image, etc.
//
// To check if the pointer coordinates are valid (e.g. a touch display actually being touched),
// PRESSED returns 1 or 0.
// If using a mouse, PRESSED will usually correspond to the left mouse button.
// PRESSED will only return 1 if the pointer is inside the game screen.
//
// For multi-touch, the index variable can be used to successively query more presses.
// If index = 0 returns true for _PRESSED, coordinates can be extracted
// with _X, _Y for index = 0. One can then query _PRESSED, _X, _Y with index = 1, and so on.
// Eventually _PRESSED will return false for an index. No further presses are registered at this point.
#define RETRO_DEVICE_POINTER 6
// These device types are specializations of the base types above.
// They should only be used in retro_set_controller_type() to inform libretro implementations
// about use of a very specific device type.
@ -100,6 +123,11 @@ extern "C" {
#define RETRO_DEVICE_ID_LIGHTGUN_PAUSE 5
#define RETRO_DEVICE_ID_LIGHTGUN_START 6
// Id values for POINTER.
#define RETRO_DEVICE_ID_POINTER_X 0
#define RETRO_DEVICE_ID_POINTER_Y 1
#define RETRO_DEVICE_ID_POINTER_PRESSED 2
// Returned from retro_get_region().
#define RETRO_REGION_NTSC 0
#define RETRO_REGION_PAL 1
@ -284,9 +312,30 @@ enum retro_key
RETROK_EURO = 321,
RETROK_UNDO = 322,
RETROK_LAST
RETROK_LAST,
RETROK_DUMMY = INT_MAX // Ensure sizeof(enum) == sizeof(int)
};
enum retro_mod
{
RETROKMOD_NONE = 0x0000,
RETROKMOD_SHIFT = 0x01,
RETROKMOD_CTRL = 0x02,
RETROKMOD_ALT = 0x04,
RETROKMOD_META = 0x08,
RETROKMOD_NUMLOCK = 0x10,
RETROKMOD_CAPSLOCK = 0x20,
RETROKMOD_SCROLLOCK = 0x40,
RETROKMOD_DUMMY = INT_MAX // Ensure sizeof(enum) == sizeof(int)
};
// If set, this call is not part of the public libretro API yet. It can change or be removed at any time.
#define RETRO_ENVIRONMENT_EXPERIMENTAL 0x10000
// Environment commands.
#define RETRO_ENVIRONMENT_SET_ROTATION 1 // const unsigned * --
// Sets screen rotation of graphics.
@ -298,21 +347,10 @@ enum retro_key
// Boolean value whether or not the implementation should use overscan, or crop away overscan.
//
#define RETRO_ENVIRONMENT_GET_CAN_DUPE 3 // bool * --
// Boolean value whether or not RetroArch supports frame duping,
// Boolean value whether or not frontend supports frame duping,
// passing NULL to video frame callback.
//
#define RETRO_ENVIRONMENT_GET_VARIABLE 4 // struct retro_variable * --
// Interface to aquire user-defined information from environment
// that cannot feasibly be supported in a multi-system way.
// Mostly used for obscure,
// specific features that the user can tap into when neseccary.
//
#define RETRO_ENVIRONMENT_SET_VARIABLES 5 // const struct retro_variable * --
// Allows an implementation to signal the environment
// which variables it might want to check for later using GET_VARIABLE.
// 'data' points to an array of retro_variable structs terminated by a { NULL, NULL } element.
// retro_variable::value should contain a human readable description of the key.
//
// 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 for a certain amount of 'frames'.
// Should not be used for trivial messages, which should simply be logged to stderr.
@ -330,10 +368,11 @@ enum retro_key
//
// It can be used by the frontend to potentially warn
// about too demanding implementations.
//
//
// The levels are "floating", but roughly defined as:
// 1: Low-powered devices such as Raspberry Pi, smart phones, tablets, etc.
// 2: Medium-spec consoles, such as PS3/360, with sub-par CPUs.
// 0: Low-powered embedded devices such as Raspberry Pi
// 1: 6th generation consoles, such as Wii/Xbox 1, and phones, tablets, etc.
// 2: 7th generation consoles, such as PS3/360, with sub-par CPUs.
// 3: Modern desktop/laptops with reasonably powerful CPUs.
// 4: High-end desktops with very powerful CPUs.
//
@ -353,14 +392,180 @@ enum retro_key
#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_XRGB1555.
// 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.
#define RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK 12
// 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).
#define RETRO_ENVIRONMENT_SET_HW_RENDER (14 | RETRO_ENVIRONMENT_EXPERIMENTAL)
// struct retro_hw_render_callback * --
// NOTE: This call is currently very experimental, and should not be considered part of the public API.
// The interface could be changed or removed at any time.
// 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 aquire 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.
//
#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.
// Pass this to retro_video_refresh_t if rendering to hardware.
// Passing NULL to retro_video_refresh_t is still a frame dupe as normal.
#define RETRO_HW_FRAME_BUFFER_VALID ((void*)-1)
// Invalidates the current HW context.
// If called, all GPU resources must be reinitialized.
// Usually called when frontend reinits video driver.
// Also called first time video driver is initialized, allowing libretro core to init resources.
typedef void (*retro_hw_context_reset_t)(void);
// Gets current framebuffer which is to be rendered to. Could change every frame potentially.
typedef uintptr_t (*retro_hw_get_current_framebuffer_t)(void);
// Get a symbol from HW context.
typedef void (*retro_proc_address_t)(void);
typedef retro_proc_address_t (*retro_hw_get_proc_address_t)(const char *sym);
enum retro_hw_context_type
{
RETRO_HW_CONTEXT_NONE = 0,
RETRO_HW_CONTEXT_OPENGL, // OpenGL 2.x. Latest version available before 3.x+.
RETRO_HW_CONTEXT_OPENGLES2, // GLES 2.0
RETRO_HW_CONTEXT_DUMMY = INT_MAX
};
struct retro_hw_render_callback
{
enum retro_hw_context_type context_type; // Which API to use. Set by libretro core.
retro_hw_context_reset_t context_reset; // Set by libretro core.
retro_hw_get_current_framebuffer_t get_current_framebuffer; // Set by frontend.
retro_hw_get_proc_address_t get_proc_address; // Set by frontend.
bool depth; // Set if render buffers should have depth component attached.
};
// Callback type passed in RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK. Called by the frontend in response to keyboard events.
// down is set if the key is being pressed, or false if it is being released.
// keycode is the RETROK value of the char.
// character is the text character of the pressed key. (UTF-32).
// key_modifiers is a set of RETROKMOD values or'ed together.
typedef void (*retro_keyboard_event_t)(bool down, unsigned keycode, uint32_t character, uint16_t key_modifiers);
struct retro_keyboard_callback
{
retro_keyboard_event_t callback;
};
// Callbacks for RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE.
// Should be set for implementations which can swap out multiple disk images in runtime.
// If the implementation can do this automatically, it should strive to do so.
// However, there are cases where the user must manually do so.
//
// Overview: To swap a disk image, eject the disk image with set_eject_state(true).
// Set the disk index with set_image_index(index). Insert the disk again with set_eject_state(false).
// If ejected is true, "ejects" the virtual disk tray.
// When ejected, the disk image index can be set.
typedef bool (*retro_set_eject_state_t)(bool ejected);
// Gets current eject state. The initial state is 'not ejected'.
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);
// Sets image index. Can only be called when disk is ejected.
// The implementation supports setting "no disk" by using an index >= get_num_images().
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);
//
// Replaces the disk image associated with index.
// Arguments to pass in info have same requirements as retro_load_game().
// Virtual disk tray must be ejected when calling this.
// Replacing a disk image with info = NULL will remove the disk image from the internal list.
// As a result, calls to get_image_index() can change.
//
// E.g. replace_image_index(1, NULL), and previous get_image_index() returned 4 before.
// Index 1 will be removed, and the new index is 3.
struct retro_game_info;
typedef bool (*retro_replace_image_index_t)(unsigned index, 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.
// This image index cannot be used until a disk image has been set with replace_image_index.
typedef bool (*retro_add_image_index_t)(void);
struct retro_disk_control_callback
{
retro_set_eject_state_t set_eject_state;
retro_get_eject_state_t get_eject_state;
retro_get_image_index_t get_image_index;
retro_set_image_index_t set_image_index;
retro_get_num_images_t get_num_images;
retro_replace_image_index_t replace_image_index;
retro_add_image_index_t add_image_index;
};
enum retro_pixel_format
{
RETRO_PIXEL_FORMAT_0RGB1555 = 0, // 0RGB1555, native endian. 0 bit must be set to 0.
RETRO_PIXEL_FORMAT_XRGB8888 // XRGB8888, native endian. X bits are ignored.
// 0RGB1555, native endian. 0 bit must be set to 0.
// This pixel format is default for compatibility concerns only.
// If a 15/16-bit pixel format is desired, consider using RGB565.
RETRO_PIXEL_FORMAT_0RGB1555 = 0,
// XRGB8888, native endian. X bits are ignored.
RETRO_PIXEL_FORMAT_XRGB8888 = 1,
// RGB565, native endian. This pixel format is the recommended format to use if a 15/16-bit format is desired
// as it is the pixel format that is typically available on a wide range of low-power devices.
// It is also natively supported in APIs like OpenGL ES.
RETRO_PIXEL_FORMAT_RGB565 = 2,
// Ensure sizeof() == sizeof(int).
RETRO_PIXEL_FORMAT_UNKNOWN = INT_MAX
};
struct retro_message
@ -369,8 +574,25 @@ struct retro_message
unsigned frames; // Duration in frames of message.
};
// Describes how the libretro implementation maps a libretro input bind
// to its internal input system through a human readable string.
// This string can be used to better let a user configure input.
struct retro_input_descriptor
{
// Associates given parameters with a description.
unsigned port;
unsigned device;
unsigned index;
unsigned id;
const char *description; // Human readable description for parameters.
// The pointer must remain valid until retro_unload_game() is called.
};
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 contain any version numbers, etc.
const char *library_version; // Descriptive version of core.
@ -439,6 +661,8 @@ 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).
// Width and height specify dimensions of buffer.
// Pitch specifices length in bytes between two lines in buffer.
// For performance reasons, it is highly recommended to have a frame that is packed in memory, i.e. pitch == width * byte_per_pixel.
// 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);
// Renders a single audio frame. Should only be used if implementation generates a single sample at a time.
@ -478,6 +702,8 @@ 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.
// NOTE: The implementation of this function might not initialize every 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);
// Sets device to be used for player 'port'.