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segatools-dniel97/divaio/divaio.h
Tau 32596acab7 Delete coin blocker exports from IO DLLs
These never get called at the moment, so we have no way of
guaranteeing that any existing implementations are even correct. If
we do decide to start emulating the coin blocker then we will need
to advance the API versions, which will (hopefully) force any
third-party devs to test their coin blocker code before opting in.
2021-06-13 11:27:01 -04:00

108 lines
3.8 KiB
C

#pragma once
#include <windows.h>
#include <stdbool.h>
#include <stdint.h>
/* Get the version of the Project Diva IO API that this DLL supports. This
function should return a positive 16-bit integer, where the high byte is
the major version and the low byte is the minor version (as defined by the
Semantic Versioning standard).
The latest API version as of this writing is 0x0100. */
uint16_t diva_io_get_api_version(void);
/* Initialize JVS-based input. This function will be called before any other
diva_io_jvs_*() function calls. Errors returned from this function will
manifest as a disconnected JVS bus.
All subsequent calls may originate from arbitrary threads and some may
overlap with each other. Ensuring synchronization inside your IO DLL is
your responsibility.
Minimum API version: 0x0100 */
HRESULT diva_io_jvs_init(void);
/* Poll JVS input.
opbtn returns the cabinet test/service state, where bit 0 is Test and Bit 1
is Service.
gamebtn bits, from least significant to most significant, are:
Circle Cross Square Triangle Start UNUSED UNUSED UNUSED
Minimum API version: 0x0100 */
void diva_io_jvs_poll(uint8_t *opbtn, uint8_t *gamebtn);
/* Read the current state of the coin counter. This value should be incremented
for every coin detected by the coin acceptor mechanism. This count does not
need to persist beyond the lifetime of the process.
Minimum API Version: 0x0100 */
void diva_io_jvs_read_coin_counter(uint16_t *out);
/* Initialize touch slider emulation. This function will be called before any
other diva_io_slider_*() function calls.
All subsequent calls may originate from arbitrary threads and some may
overlap with each other. Ensuring synchronization inside your IO DLL is
your responsibility.
Minimum API version: 0x0100 */
HRESULT diva_io_slider_init(void);
/* Project Diva touch sliders consist of 32 pressure sensitive cells, where
cell 1 (array index 0) is the rightmost cell and cell 32 (array index 31) is
the leftmost cell. */
/* Callback function supplied to your IO DLL. This must be called with a
pointer to a 32-byte array of pressure values, one byte per slider cell.
Cells reporting a pressure value of at least 20 are considered to be pressed.
This threshold is not configurable.
The callback will copy the pressure state data out of your buffer before
returning. The pointer will not be retained. */
typedef void (*diva_io_slider_callback_t)(const uint8_t *state);
/* Start polling the slider. Your DLL must start a polling thread and call the
supplied function periodically from that thread with new input state. The
update interval is up to you, but if your input device doesn't have any
preferred interval then 1 kHz is a reasonable maximum frequency.
Note that you do have to have to call the callback "occasionally" even if
nothing is changing, otherwise the game will raise a comm timeout error.
Minimum API version: 0x0100 */
void diva_io_slider_start(diva_io_slider_callback_t callback);
/* Stop polling the slider. You must cease to invoke the input callback before
returning from this function.
This *will* be called in the course of regular operation. For example,
every time you go into the operator menu the slider and all of the other I/O
on the cabinet gets restarted.
Following on from the above, the slider polling loop *will* be restarted
after being stopped in the course of regular operation. Do not permanently
tear down your input driver in response to this function call.
Minimum API version: 0x0100 */
void diva_io_slider_stop(void);
/* Update the RGB lighting on the slider. A pointer to an array of 32 * 3 = 96
bytes is supplied. Layout is probably strictly linear but still TBD.
Minimum API version: 0x0100 */
void diva_io_slider_set_leds(const uint8_t *rgb);