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dolphin/Externals/WiiUseSrc/Src/wiiuse.c

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/*
* wiiuse
*
* Written By:
* Michael Laforest < para >
* Email: < thepara (--AT--) g m a i l [--DOT--] com >
*
* Copyright 2006-2007
*
* This file is part of wiiuse.
*
* 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 3 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/>.
*
* $Header$
*
*/
/**
* @file
* @brief General wiimote operations.
*
* The file includes functions that handle general
* tasks. Most of these are functions that are part
* of the API.
*/
#include <stdio.h>
#include <stdlib.h>
#ifndef WIN32
#include <unistd.h>
#else
#include <Winsock2.h>
#endif
#include "definitions.h"
#include "wiiuse_internal.h"
#include "events.h"
#include "io.h"
static int g_banner = 0;
/**
* @breif Returns the version of the library.
*/
const char* wiiuse_version() {
return WIIUSE_VERSION;
}
/**
* @brief Clean up wiimote_t array created by wiiuse_init()
*/
void wiiuse_cleanup(struct wiimote_t** wm, int wiimotes) {
int i = 0;
if (!wm)
return;
WIIUSE_INFO("wiiuse clean up...");
for (; i < wiimotes; ++i) {
wiiuse_disconnect(wm[i]);
free(wm[i]);
}
free(wm);
return;
}
/**
* @brief Initialize an array of wiimote structures.
*
* @param wiimotes Number of wiimote_t structures to create.
*
* @return An array of initialized wiimote_t structures.
*
* @see wiiuse_connect()
*
* The array returned by this function can be passed to various
* functions, including wiiuse_connect().
*/
struct wiimote_t** wiiuse_init(int wiimotes) {
int i = 0;
struct wiimote_t** wm = NULL;
/*
* Please do not remove this banner.
* GPL asks that you please leave output credits intact.
* Thank you.
*
* This banner is only displayed once so that if you need
* to call this function again it won't be intrusive.
*/
if (!g_banner) {
printf( "wiiuse v" WIIUSE_VERSION " loaded.\n"
" By: Michael Laforest <thepara[at]gmail{dot}com>\n"
" http://wiiuse.net http://wiiuse.sf.net\n");
g_banner = 1;
}
if (!wiimotes)
return NULL;
wm = (struct wiimote_t **)malloc(sizeof(struct wiimote_t*) * wiimotes);
for (i = 0; i < wiimotes; ++i) {
wm[i] = (struct wiimote_t *)malloc(sizeof(struct wiimote_t));
memset(wm[i], 0, sizeof(struct wiimote_t));
wm[i]->unid = i+1;
#ifdef __linux__
wm[i]->bdaddr = *BDADDR_ANY;
wm[i]->out_sock = -1;
wm[i]->in_sock = -1;
#else
#if !defined(__APPLE__)
wm[i]->dev_handle = 0;
wm[i]->stack = WIIUSE_STACK_UNKNOWN;
#endif
#endif
wm[i]->normal_timeout = WIIMOTE_DEFAULT_TIMEOUT;
wm[i]->exp_timeout = WIIMOTE_EXP_TIMEOUT;
wm[i]->timeout = wm[i]->normal_timeout;
wm[i]->state = WIIMOTE_INIT_STATES;
wm[i]->flags = WIIUSE_INIT_FLAGS;
wm[i]->event = WIIUSE_NONE;
wm[i]->exp.type = EXP_NONE;
wiiuse_set_aspect_ratio(wm[i], WIIUSE_ASPECT_4_3);
wiiuse_set_ir_position(wm[i], WIIUSE_IR_ABOVE);
wm[i]->orient_threshold = 0.5f;
wm[i]->accel_threshold = 5;
wm[i]->accel_calib.st_alpha = WIIUSE_DEFAULT_SMOOTH_ALPHA;
}
return wm;
}
/**
* @brief The wiimote disconnected.
*
* @param wm Pointer to a wiimote_t structure.
*/
void wiiuse_disconnected(struct wiimote_t* wm) {
if (!wm) return;
WIIUSE_INFO("Wiimote disconnected [id %i].", wm->unid);
/* disable the connected flag */
WIIMOTE_DISABLE_STATE(wm, WIIMOTE_STATE_CONNECTED);
/* reset a bunch of stuff */
wm->leds = 0;
wm->state = WIIMOTE_INIT_STATES;
wm->read_req = NULL;
wm->handshake_state = 0;
wm->btns = 0;
wm->btns_held = 0;
wm->btns_released = 0;
memset(wm->event_buf, 0, sizeof(wm->event_buf));
#ifndef WIN32
wm->out_sock = -1;
wm->in_sock = -1;
#else
CloseHandle(wm->dev_handle);
wm->dev_handle = 0;
#endif
wm->event = WIIUSE_DISCONNECT;
}
/**
* @brief Enable or disable the rumble.
*
* @param wm Pointer to a wiimote_t structure.
* @param status 1 to enable, 0 to disable.
*/
void wiiuse_rumble(struct wiimote_t* wm, int status) {
byte buf;
if (!wm || !WIIMOTE_IS_CONNECTED(wm))
return;
/* make sure to keep the current lit leds */
buf = wm->leds;
if (status) {
WIIUSE_DEBUG("Starting rumble...");
WIIMOTE_ENABLE_STATE(wm, WIIMOTE_STATE_RUMBLE);
buf |= 0x01;
} else {
WIIUSE_DEBUG("Stopping rumble...");
WIIMOTE_DISABLE_STATE(wm, WIIMOTE_STATE_RUMBLE);
}
/* preserve IR state */
if (WIIMOTE_IS_SET(wm, WIIMOTE_STATE_IR))
buf |= 0x04;
wiiuse_send(wm, WM_CMD_RUMBLE, &buf, 1);
}
/**
* @brief Toggle the state of the rumble.
*
* @param wm Pointer to a wiimote_t structure.
*/
void wiiuse_toggle_rumble(struct wiimote_t* wm) {
if (!wm) return;
wiiuse_rumble(wm, !WIIMOTE_IS_SET(wm, WIIMOTE_STATE_RUMBLE));
}
/**
* @brief Set the enabled LEDs.
*
* @param wm Pointer to a wiimote_t structure.
* @param leds What LEDs to enable.
*
* \a leds is a bitwise or of WIIMOTE_LED_1, WIIMOTE_LED_2, WIIMOTE_LED_3, or WIIMOTE_LED_4.
*/
void wiiuse_set_leds(struct wiimote_t* wm, int leds) {
byte buf;
if (!wm || !WIIMOTE_IS_CONNECTED(wm))
return;
/* remove the lower 4 bits because they control rumble */
wm->leds = (leds & 0xF0);
/* make sure if the rumble is on that we keep it on */
if (WIIMOTE_IS_SET(wm, WIIMOTE_STATE_RUMBLE))
wm->leds |= 0x01;
buf = wm->leds;
wiiuse_send(wm, WM_CMD_LED, &buf, 1);
}
/**
* @brief Set if the wiimote should report motion sensing.
*
* @param wm Pointer to a wiimote_t structure.
* @param status 1 to enable, 0 to disable.
*
* Since reporting motion sensing sends a lot of data,
* the wiimote saves power by not transmitting it
* by default.
*/
void wiiuse_motion_sensing(struct wiimote_t* wm, int status) {
if (status)
WIIMOTE_ENABLE_STATE(wm, WIIMOTE_STATE_ACC);
else
WIIMOTE_DISABLE_STATE(wm, WIIMOTE_STATE_ACC);
wiiuse_set_report_type(wm);
}
/**
* @brief Set the report type based on the current wiimote state.
*
* @param wm Pointer to a wiimote_t structure.
*
* @return The report type sent.
*
* The wiimote reports formatted packets depending on the
* report type that was last requested. This function will
* update the type of report that should be sent based on
* the current state of the device.
*/
int wiiuse_set_report_type(struct wiimote_t* wm) {
byte buf[2];
int motion, exp, ir;
if (!wm || !WIIMOTE_IS_CONNECTED(wm))
return 0;
buf[0] = (WIIMOTE_IS_FLAG_SET(wm, WIIUSE_CONTINUOUS) ? 0x04 : 0x00); /* set to 0x04 for continuous reporting */
buf[1] = 0x00;
/* if rumble is enabled, make sure we keep it */
if (WIIMOTE_IS_SET(wm, WIIMOTE_STATE_RUMBLE))
buf[0] |= 0x01;
motion = WIIMOTE_IS_SET(wm, WIIMOTE_STATE_ACC);
exp = WIIMOTE_IS_SET(wm, WIIMOTE_STATE_EXP);
ir = WIIMOTE_IS_SET(wm, WIIMOTE_STATE_IR);
if (motion && ir && exp) buf[1] = WM_RPT_BTN_ACC_IR_EXP;
else if (motion && exp) buf[1] = WM_RPT_BTN_ACC_EXP;
else if (motion && ir) buf[1] = WM_RPT_BTN_ACC_IR;
else if (ir && exp) buf[1] = WM_RPT_BTN_IR_EXP;
else if (ir) buf[1] = WM_RPT_BTN_ACC_IR;
else if (exp) buf[1] = WM_RPT_BTN_EXP;
else if (motion) buf[1] = WM_RPT_BTN_ACC;
else buf[1] = WM_RPT_BTN;
WIIUSE_DEBUG("Setting report type: 0x%x", buf[1]);
exp = wiiuse_send(wm, WM_CMD_REPORT_TYPE, buf, 2);
if (exp <= 0)
return exp;
return buf[1];
}
/**
* @brief Read data from the wiimote (callback version).
*
* @param wm Pointer to a wiimote_t structure.
* @param read_cb Function pointer to call when the data arrives from the wiimote.
* @param buffer An allocated buffer to store the data as it arrives from the wiimote.
* Must be persistent in memory and large enough to hold the data.
* @param addr The address of wiimote memory to read from.
* @param len The length of the block to be read.
*
* The library can only handle one data read request at a time
* because it must keep track of the buffer and other
* events that are specific to that request. So if a request
* has already been made, subsequent requests will be added
* to a pending list and be sent out when the previous
* finishes.
*/
int wiiuse_read_data_cb(struct wiimote_t* wm, wiiuse_read_cb read_cb, byte* buffer, unsigned int addr, unsigned short len) {
struct read_req_t* req;
if (!wm || !WIIMOTE_IS_CONNECTED(wm))
return 0;
if (!buffer || !len || !read_cb)
return 0;
/* make this request structure */
req = (struct read_req_t*)malloc(sizeof(struct read_req_t));
req->cb = read_cb;
req->buf = buffer;
req->addr = addr;
req->size = len;
req->wait = len;
req->dirty = 0;
req->next = NULL;
/* add this to the request list */
if (!wm->read_req) {
/* root node */
wm->read_req = req;
WIIUSE_DEBUG("Data read request can be sent out immediately.");
/* send the request out immediately */
wiiuse_send_next_pending_read_request(wm);
} else {
struct read_req_t* nptr = wm->read_req;
for (; nptr->next; nptr = nptr->next);
nptr->next = req;
WIIUSE_DEBUG("Added pending data read request.");
}
return 1;
}
/**
* @brief Read data from the wiimote (event version).
*
* @param wm Pointer to a wiimote_t structure.
* @param buffer An allocated buffer to store the data as it arrives from the wiimote.
* Must be persistent in memory and large enough to hold the data.
* @param addr The address of wiimote memory to read from.
* @param len The length of the block to be read.
*
* The library can only handle one data read request at a time
* because it must keep track of the buffer and other
* events that are specific to that request. So if a request
* has already been made, subsequent requests will be added
* to a pending list and be sent out when the previous
* finishes.
*/
int wiiuse_read_data(struct wiimote_t* wm, byte* buffer, unsigned int addr, unsigned short len) {
struct read_req_t* req;
if (!wm || !WIIMOTE_IS_CONNECTED(wm))
return 0;
if (!buffer || !len)
return 0;
/* make this request structure */
req = (struct read_req_t*)malloc(sizeof(struct read_req_t));
req->cb = NULL;
req->buf = buffer;
req->addr = addr;
req->size = len;
req->wait = len;
req->dirty = 0;
req->next = NULL;
/* add this to the request list */
if (!wm->read_req) {
/* root node */
wm->read_req = req;
WIIUSE_DEBUG("Data read request can be sent out immediately.");
/* send the request out immediately */
wiiuse_send_next_pending_read_request(wm);
} else {
struct read_req_t* nptr = wm->read_req;
for (; nptr->next; nptr = nptr->next);
nptr->next = req;
WIIUSE_DEBUG("Added pending data read request.");
}
return 1;
}
/**
* @brief Send the next pending data read request to the wiimote.
*
* @param wm Pointer to a wiimote_t structure.
*
* @see wiiuse_read_data()
*
* This function is not part of the wiiuse API.
*/
void wiiuse_send_next_pending_read_request(struct wiimote_t* wm) {
byte buf[6];
struct read_req_t* req;
if (!wm || !WIIMOTE_IS_CONNECTED(wm))
return;
if (!wm->read_req) return;
/* skip over dirty ones since they have already been read */
req = wm->read_req;
while (req && req->dirty)
req = req->next;
if (!req)
return;
/* the offset is in big endian */
*(int*)(buf) = BIG_ENDIAN_LONG(req->addr);
/* the length is in big endian */
*(short*)(buf + 4) = BIG_ENDIAN_SHORT(req->size);
WIIUSE_DEBUG("Request read at address: 0x%x length: %i", req->addr, req->size);
wiiuse_send(wm, WM_CMD_READ_DATA, buf, 6);
}
/**
* @brief Request the wiimote controller status.
*
* @param wm Pointer to a wiimote_t structure.
*
* Controller status includes: battery level, LED status, expansions
*/
void wiiuse_status(struct wiimote_t* wm) {
byte buf = 0;
if (!wm || !WIIMOTE_IS_CONNECTED(wm))
return;
WIIUSE_DEBUG("Requested wiimote status.");
wiiuse_send(wm, WM_CMD_CTRL_STATUS, &buf, 1);
}
/**
* @brief Find a wiimote_t structure by its unique identifier.
*
* @param wm Pointer to a wiimote_t structure.
* @param wiimotes The number of wiimote_t structures in \a wm.
* @param unid The unique identifier to search for.
*
* @return Pointer to a wiimote_t structure, or NULL if not found.
*/
struct wiimote_t* wiiuse_get_by_id(struct wiimote_t** wm, int wiimotes, int unid) {
int i = 0;
for (; i < wiimotes; ++i) {
if (wm[i]->unid == unid)
return wm[i];
}
return NULL;
}
/**
* @brief Write data to the wiimote.
*
* @param wm Pointer to a wiimote_t structure.
* @param addr The address to write to.
* @param data The data to be written to the memory location.
* @param len The length of the block to be written.
*/
int wiiuse_write_data(struct wiimote_t* wm, unsigned int addr, byte* data, byte len) {
byte buf[21] = {0}; /* the payload is always 23 */
if (!wm || !WIIMOTE_IS_CONNECTED(wm))
return 0;
if (!data || !len)
return 0;
WIIUSE_DEBUG("Writing %i bytes to memory location 0x%x...", len, addr);
#ifdef WITH_WIIUSE_DEBUG
{
int i = 0;
printf("Write data is: ");
for (; i < len; ++i)
printf("%x ", data[i]);
printf("\n");
}
#endif
/* the offset is in big endian */
*(int*)(buf) = BIG_ENDIAN_LONG(addr);
/* length */
*(byte*)(buf + 4) = len;
/* data */
memcpy(buf + 5, data, len);
wiiuse_send(wm, WM_CMD_WRITE_DATA, buf, 21);
return 1;
}
/**
* @brief Send a packet to the wiimote.
*
* @param wm Pointer to a wiimote_t structure.
* @param report_type The report type to send (WIIMOTE_CMD_LED, WIIMOTE_CMD_RUMBLE, etc). Found in wiiuse.h
* @param msg The payload.
* @param len Length of the payload in bytes.
*
* This function should replace any write()s directly to the wiimote device.
*/
int wiiuse_send(struct wiimote_t* wm, byte report_type, byte* msg, int len) {
byte buf[32]; /* no payload is better than this */
int rumble = 0;
buf[0] = WM_SET_REPORT | WM_BT_OUTPUT;
buf[1] = report_type;
switch (report_type) {
case WM_CMD_LED:
case WM_CMD_RUMBLE:
case WM_CMD_CTRL_STATUS:
{
/* Rumble flag for: 0x11, 0x13, 0x14, 0x15, 0x19 or 0x1a */
if (WIIMOTE_IS_SET(wm, WIIMOTE_STATE_RUMBLE))
rumble = 1;
break;
}
default:
break;
}
memcpy(buf+2, msg, len);
if (rumble)
buf[2] |= 0x01;
#ifdef WITH_WIIUSE_DEBUG
{
int x = 2;
printf("[DEBUG] (id %i) SEND: (%x) %.2x ", wm->unid, buf[0], buf[1]);
#ifndef WIN32
for (; x < len+2; ++x)
#else
for (; x < len+1; ++x)
#endif
printf("%.2x ", buf[x]);
printf("\n");
}
#endif
return wiiuse_io_write(wm, buf, len+2);
}
/**
* @brief Set flags for the specified wiimote.
*
* @param wm Pointer to a wiimote_t structure.
* @param enable Flags to enable.
* @param disable Flags to disable.
*
* @return The flags set after 'enable' and 'disable' have been applied.
*
* The values 'enable' and 'disable' may be any flags OR'ed together.
* Flags are defined in wiiuse.h.
*/
int wiiuse_set_flags(struct wiimote_t* wm, int enable, int disable) {
if (!wm) return 0;
/* remove mutually exclusive flags */
enable &= ~disable;
disable &= ~enable;
wm->flags |= enable;
wm->flags &= ~disable;
return wm->flags;
}
/**
* @brief Set the wiimote smoothing alpha value.
*
* @param wm Pointer to a wiimote_t structure.
* @param alpha The alpha value to set. Between 0 and 1.
*
* @return Returns the old alpha value.
*
* The alpha value is between 0 and 1 and is used in an exponential
* smoothing algorithm.
*
* Smoothing is only performed if the WIIMOTE_USE_SMOOTHING is set.
*/
float wiiuse_set_smooth_alpha(struct wiimote_t* wm, float alpha) {
float old;
if (!wm) return 0.0f;
old = wm->accel_calib.st_alpha;
wm->accel_calib.st_alpha = alpha;
/* if there is a nunchuk set that too */
if (wm->exp.type == EXP_NUNCHUK)
wm->exp.nunchuk.accel_calib.st_alpha = alpha;
return old;
}
/**
* @brief Set the bluetooth stack type to use.
*
* @param wm Array of wiimote_t structures.
* @param wiimotes Number of objects in the wm array.
* @param type The type of bluetooth stack to use.
*/
void wiiuse_set_bluetooth_stack(struct wiimote_t** wm, int wiimotes, enum win_bt_stack_t type) {
#ifdef WIN32
int i;
if (!wm) return;
for (i = 0; i < wiimotes; ++i)
wm[i]->stack = type;
#endif
}
/**
* @brief Set the orientation event threshold.
*
* @param wm Pointer to a wiimote_t structure.
* @param threshold The decimal place that should be considered a significant change.
*
* If threshold is 0.01, and any angle changes by 0.01 then a significant change
* has occured and the event callback will be invoked. If threshold is 1 then
* the angle has to change by a full degree to generate an event.
*/
void wiiuse_set_orient_threshold(struct wiimote_t* wm, float threshold) {
if (!wm) return;
wm->orient_threshold = threshold;
}
/**
* @brief Set the accelerometer event threshold.
*
* @param wm Pointer to a wiimote_t structure.
* @param threshold The decimal place that should be considered a significant change.
*/
void wiiuse_set_accel_threshold(struct wiimote_t* wm, int threshold) {
if (!wm) return;
wm->accel_threshold = threshold;
}
/**
* @brief Try to resync with the wiimote by starting a new handshake.
*
* @param wm Pointer to a wiimote_t structure.
*/
void wiiuse_resync(struct wiimote_t* wm) {
if (!wm) return;
wm->handshake_state = 0;
wiiuse_handshake(wm, NULL, 0);
}
/**
* @brief Set the normal and expansion handshake timeouts.
*
* @param wm Array of wiimote_t structures.
* @param wiimotes Number of objects in the wm array.
* @param normal_timeout The timeout in milliseconds for a normal read.
* @param exp_timeout The timeout in millisecondsd to wait for an expansion handshake.
*/
void wiiuse_set_timeout(struct wiimote_t** wm, int wiimotes, byte normal_timeout, byte exp_timeout) {
int i;
if (!wm) return;
for (i = 0; i < wiimotes; ++i) {
wm[i]->normal_timeout = normal_timeout;
wm[i]->exp_timeout = exp_timeout;
}
}
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