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/* DirectInput Linux Event Device Effect
*
* Copyright 2005 Daniel Remenak
*
* Thanks to Google's Summer of Code Program (2005)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#ifdef HAVE_STRUCT_FF_EFFECT_DIRECTION
#include <stdarg.h>
#include <string.h>
#ifdef HAVE_LINUX_INPUT_H
# include <linux/input.h>
# undef SW_MAX
#endif
#include <errno.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <math.h>
#include "wine/debug.h"
#include "wine/unicode.h"
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "dinput.h"
#include "device_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(dinput);
static const IDirectInputEffectVtbl LinuxInputEffectVtbl;
typedef struct LinuxInputEffectImpl LinuxInputEffectImpl;
struct LinuxInputEffectImpl
{
const void *lpVtbl;
LONG ref;
GUID guid;
/* Effect data */
struct ff_effect effect;
/* Parent device */
int* fd;
};
/******************************************************************************
* DirectInputEffect Functional Helper
*/
static DWORD _typeFromGUID(REFGUID guid)
{
if (IsEqualGUID(guid, &GUID_ConstantForce)) {
return DIEFT_CONSTANTFORCE;
} else if (IsEqualGUID(guid, &GUID_Square)
|| IsEqualGUID(guid, &GUID_Sine)
|| IsEqualGUID(guid, &GUID_Triangle)
|| IsEqualGUID(guid, &GUID_SawtoothUp)
|| IsEqualGUID(guid, &GUID_SawtoothDown)) {
return DIEFT_PERIODIC;
} else if (IsEqualGUID(guid, &GUID_RampForce)) {
return DIEFT_RAMPFORCE;
} else if (IsEqualGUID(guid, &GUID_Spring)
|| IsEqualGUID(guid, &GUID_Damper)
|| IsEqualGUID(guid, &GUID_Inertia)
|| IsEqualGUID(guid, &GUID_Friction)) {
return DIEFT_CONDITION;
} else if (IsEqualGUID(guid, &GUID_CustomForce)) {
return DIEFT_CUSTOMFORCE;
} else {
WARN("GUID (%s) is not a known force type\n", _dump_dinput_GUID(guid));
return 0;
}
}
/******************************************************************************
* DirectInputEffect debug helpers
*/
static void _dump_DIEFFECT_flags(DWORD dwFlags)
{
if (TRACE_ON(dinput)) {
unsigned int i;
static const struct {
DWORD mask;
const char *name;
} flags[] = {
#define FE(x) { x, #x}
FE(DIEFF_CARTESIAN),
FE(DIEFF_OBJECTIDS),
FE(DIEFF_OBJECTOFFSETS),
FE(DIEFF_POLAR),
FE(DIEFF_SPHERICAL)
#undef FE
};
for (i = 0; i < (sizeof(flags) / sizeof(flags[0])); i++)
if (flags[i].mask & dwFlags)
DPRINTF("%s ", flags[i].name);
DPRINTF("\n");
}
}
static void _dump_DIENVELOPE(LPCDIENVELOPE env)
{
if (env->dwSize != sizeof(DIENVELOPE)) {
WARN("Non-standard DIENVELOPE structure size (%d instead of %d).\n",
env->dwSize, sizeof(DIENVELOPE));
}
TRACE("Envelope has attack (level: %d time: %d), fade (level: %d time: %d)\n",
env->dwAttackLevel, env->dwAttackTime, env->dwFadeLevel, env->dwFadeTime);
}
static void _dump_DICONSTANTFORCE(LPCDICONSTANTFORCE frc)
{
TRACE("Constant force has magnitude %d\n", frc->lMagnitude);
}
static void _dump_DIPERIODIC(LPCDIPERIODIC frc)
{
TRACE("Periodic force has magnitude %d, offset %d, phase %d, period %d\n",
frc->dwMagnitude, frc->lOffset, frc->dwPhase, frc->dwPeriod);
}
static void _dump_DIRAMPFORCE(LPCDIRAMPFORCE frc)
{
TRACE("Ramp force has start %d, end %d\n",
frc->lStart, frc->lEnd);
}
static void _dump_DICONDITION(LPCDICONDITION frc)
{
TRACE("Condition has offset %d, pos/neg coefficients %d and %d, pos/neg saturations %d and %d, deadband %d\n",
frc->lOffset, frc->lPositiveCoefficient, frc->lNegativeCoefficient,
frc->dwPositiveSaturation, frc->dwNegativeSaturation, frc->lDeadBand);
}
static void _dump_DICUSTOMFORCE(LPCDICUSTOMFORCE frc)
{
unsigned int i;
TRACE("Custom force uses %d channels, sample period %d. Has %d samples at %p.\n",
frc->cChannels, frc->dwSamplePeriod, frc->cSamples, frc->rglForceData);
if (frc->cSamples % frc->cChannels != 0)
WARN("Custom force has a non-integral samples-per-channel count!\n");
if (TRACE_ON(dinput)) {
DPRINTF("Custom force data (time aligned, axes in order):\n");
for (i = 1; i <= frc->cSamples; ++i) {
DPRINTF("%d ", frc->rglForceData[i]);
if (i % frc->cChannels == 0)
DPRINTF("\n");
}
}
}
static void _dump_DIEFFECT(LPCDIEFFECT eff, REFGUID guid)
{
unsigned int i;
DWORD type = _typeFromGUID(guid);
TRACE("Dumping DIEFFECT structure:\n");
TRACE(" - dwSize: %d\n", eff->dwSize);
if ((eff->dwSize != sizeof(DIEFFECT)) && (eff->dwSize != sizeof(DIEFFECT_DX5))) {
WARN("Non-standard DIEFFECT structure size (%d instead of %d or %d).\n",
eff->dwSize, sizeof(DIEFFECT), sizeof(DIEFFECT_DX5));
}
TRACE(" - dwFlags: %d\n", eff->dwFlags);
TRACE(" ");
_dump_DIEFFECT_flags(eff->dwFlags);
TRACE(" - dwDuration: %d\n", eff->dwDuration);
TRACE(" - dwGain: %d\n", eff->dwGain);
if ((eff->dwGain > 10000) || (eff->dwGain < 0))
WARN("dwGain is out of range (0 - 10,000)\n");
TRACE(" - dwTriggerButton: %d\n", eff->dwTriggerButton);
TRACE(" - dwTriggerRepeatInterval: %d\n", eff->dwTriggerRepeatInterval);
TRACE(" - cAxes: %d\n", eff->cAxes);
TRACE(" - rgdwAxes: %p\n", eff->rgdwAxes);
if (TRACE_ON(dinput)) {
TRACE(" ");
for (i = 0; i < eff->cAxes; ++i)
DPRINTF("%d ", eff->rgdwAxes[i]);
DPRINTF("\n");
}
TRACE(" - rglDirection: %p\n", eff->rglDirection);
TRACE(" - lpEnvelope: %p\n", eff->lpEnvelope);
TRACE(" - cbTypeSpecificParams: %d\n", eff->cbTypeSpecificParams);
TRACE(" - lpvTypeSpecificParams: %p\n", eff->lpvTypeSpecificParams);
if (eff->dwSize > sizeof(DIEFFECT_DX5))
TRACE(" - dwStartDelay: %d\n", eff->dwStartDelay);
if (eff->lpEnvelope != NULL)
_dump_DIENVELOPE(eff->lpEnvelope);
if (type == DIEFT_CONSTANTFORCE) {
if (eff->cbTypeSpecificParams != sizeof(DICONSTANTFORCE)) {
WARN("Effect claims to be a constant force but the type-specific params are the wrong size!\n");
} else {
_dump_DICONSTANTFORCE(eff->lpvTypeSpecificParams);
}
} else if (type == DIEFT_PERIODIC) {
if (eff->cbTypeSpecificParams != sizeof(DIPERIODIC)) {
WARN("Effect claims to be a periodic force but the type-specific params are the wrong size!\n");
} else {
_dump_DIPERIODIC(eff->lpvTypeSpecificParams);
}
} else if (type == DIEFT_RAMPFORCE) {
if (eff->cbTypeSpecificParams != sizeof(DIRAMPFORCE)) {
WARN("Effect claims to be a ramp force but the type-specific params are the wrong size!\n");
} else {
_dump_DIRAMPFORCE(eff->lpvTypeSpecificParams);
}
} else if (type == DIEFT_CONDITION) {
if (eff->cbTypeSpecificParams != sizeof(DICONDITION)) {
WARN("Effect claims to be a condition but the type-specific params are the wrong size!\n");
} else {
_dump_DICONDITION(eff->lpvTypeSpecificParams);
}
} else if (type == DIEFT_CUSTOMFORCE) {
if (eff->cbTypeSpecificParams != sizeof(DICUSTOMFORCE)) {
WARN("Effect claims to be a custom force but the type-specific params are the wrong size!\n");
} else {
_dump_DICUSTOMFORCE(eff->lpvTypeSpecificParams);
}
}
}
/******************************************************************************
* LinuxInputEffectImpl
*/
static ULONG WINAPI LinuxInputEffectImpl_AddRef(
LPDIRECTINPUTEFFECT iface)
{
LinuxInputEffectImpl *This = (LinuxInputEffectImpl *)iface;
return InterlockedIncrement(&(This->ref));
}
static HRESULT WINAPI LinuxInputEffectImpl_Download(
LPDIRECTINPUTEFFECT iface)
{
LinuxInputEffectImpl *This = (LinuxInputEffectImpl *)iface;
TRACE("(this=%p)\n", This);
if (ioctl(*(This->fd), EVIOCSFF, &This->effect) == -1) {
if (errno == ENOMEM) {
return DIERR_DEVICEFULL;
} else {
FIXME("Could not upload effect. Assuming a disconnected device.\n");
return DIERR_INPUTLOST;
}
}
return DI_OK;
}
static HRESULT WINAPI LinuxInputEffectImpl_Escape(
LPDIRECTINPUTEFFECT iface,
LPDIEFFESCAPE pesc)
{
WARN("(this=%p,%p): invalid: no hardware-specific escape codes in this"
" driver!\n", iface, pesc);
return DI_OK;
}
static HRESULT WINAPI LinuxInputEffectImpl_GetEffectGuid(
LPDIRECTINPUTEFFECT iface,
LPGUID pguid)
{
LinuxInputEffectImpl *This = (LinuxInputEffectImpl*)iface;
TRACE("(this=%p,%p)\n", This, pguid);
pguid = &This->guid;
return DI_OK;
}
static HRESULT WINAPI LinuxInputEffectImpl_GetEffectStatus(
LPDIRECTINPUTEFFECT iface,
LPDWORD pdwFlags)
{
TRACE("(this=%p,%p)\n", iface, pdwFlags);
/* linux sends the effect status through an event.
* that event is trapped by our parent joystick driver
* and there is no clean way to pass it back to us. */
FIXME("Not enough information to provide a status.\n");
(*pdwFlags) = 0;
return DI_OK;
}
static HRESULT WINAPI LinuxInputEffectImpl_GetParameters(
LPDIRECTINPUTEFFECT iface,
LPDIEFFECT peff,
DWORD dwFlags)
{
HRESULT diErr = DI_OK;
LinuxInputEffectImpl *This = (LinuxInputEffectImpl *)iface;
TRACE("(this=%p,%p,%d)\n", This, peff, dwFlags);
/* Major conversion factors are:
* times: millisecond (linux) -> microsecond (windows) (x * 1000)
* forces: scale 0x7FFF (linux) -> scale 10000 (windows) approx ((x / 33) * 10)
* angles: scale 0x7FFF (linux) -> scale 35999 (windows) approx ((x / 33) * 36)
* angle bases: 0 -> -y (down) (linux) -> 0 -> +x (right) (windows)
*/
if (dwFlags & DIEP_AXES) {
if (peff->cAxes < 2 /* linuxinput effects always use 2 axes, x and y */)
diErr = DIERR_MOREDATA;
peff->cAxes = 2;
if (diErr)
return diErr;
else {
peff->rgdwAxes[0] = DIJOFS_X;
peff->rgdwAxes[1] = DIJOFS_Y;
}
}
if (dwFlags & DIEP_DIRECTION) {
if (peff->cAxes < 2)
diErr = DIERR_MOREDATA;
peff->cAxes = 2;
if (diErr)
return diErr;
else {
if (peff->dwFlags & DIEFF_CARTESIAN) {
peff->rglDirection[0] = (long)(sin(M_PI * 3 * This->effect.direction / 0x7FFF) * 1000);
peff->rglDirection[1] = (long)(cos(M_PI * 3 * This->effect.direction / 0x7FFF) * 1000);
} else {
/* Polar and spherical coordinates are the same for two or less
* axes.
* Note that we also use this case if NO flags are marked.
* According to MSDN, we should return the direction in the
* format that it was specified in, if no flags are marked.
*/
peff->rglDirection[0] = (This->effect.direction / 33) * 36 + 9000;
if (peff->rglDirection[0] > 35999)
peff->rglDirection[0] -= 35999;
}
}
}
if (dwFlags & DIEP_DURATION) {
peff->dwDuration = (DWORD)This->effect.replay.length * 1000;
}
if (dwFlags & DIEP_ENVELOPE) {
struct ff_envelope* env;
if (This->effect.type == FF_CONSTANT) env = &This->effect.u.constant.envelope;
else if (This->effect.type == FF_PERIODIC) env = &This->effect.u.periodic.envelope;
else if (This->effect.type == FF_RAMP) env = &This->effect.u.ramp.envelope;
else env = NULL;
if (env == NULL) {
peff->lpEnvelope = NULL;
} else if (peff->lpEnvelope == NULL) {
return DIERR_INVALIDPARAM;
} else {
peff->lpEnvelope->dwAttackLevel = (env->attack_level / 33) * 10;
peff->lpEnvelope->dwAttackTime = env->attack_length * 1000;
peff->lpEnvelope->dwFadeLevel = (env->fade_level / 33) * 10;
peff->lpEnvelope->dwFadeTime = env->fade_length * 1000;
}
}
if (dwFlags & DIEP_GAIN) {
/* the linux input ff driver apparently has no support
* for setting the device's gain. */
peff->dwGain = DI_FFNOMINALMAX;
}
if (dwFlags & DIEP_SAMPLEPERIOD) {
/* the linux input ff driver has no support for setting
* the playback sample period. 0 means default. */
peff->dwSamplePeriod = 0;
}
if (dwFlags & DIEP_STARTDELAY) {
peff->dwStartDelay = This->effect.replay.delay * 1000;
}
if (dwFlags & DIEP_TRIGGERBUTTON) {
FIXME("LinuxInput button mapping needs redoing; for now, assuming we're using an actual joystick.\n");
peff->dwTriggerButton = DIJOFS_BUTTON(This->effect.trigger.button - BTN_JOYSTICK);
}
if (dwFlags & DIEP_TRIGGERREPEATINTERVAL) {
peff->dwTriggerRepeatInterval = This->effect.trigger.interval * 1000;
}
if (dwFlags & DIEP_TYPESPECIFICPARAMS) {
int expectedsize = 0;
if (This->effect.type == FF_PERIODIC) {
expectedsize = sizeof(DIPERIODIC);
} else if (This->effect.type == FF_CONSTANT) {
expectedsize = sizeof(DICONSTANTFORCE);
} else if (This->effect.type == FF_SPRING
|| This->effect.type == FF_FRICTION
|| This->effect.type == FF_INERTIA
|| This->effect.type == FF_DAMPER) {
expectedsize = sizeof(DICONDITION) * 2;
} else if (This->effect.type == FF_RAMP) {
expectedsize = sizeof(DIRAMPFORCE);
}
if (expectedsize > peff->cbTypeSpecificParams)
diErr = DIERR_MOREDATA;
peff->cbTypeSpecificParams = expectedsize;
if (diErr)
return diErr;
else {
if (This->effect.type == FF_PERIODIC) {
LPDIPERIODIC tsp = (LPDIPERIODIC)(peff->lpvTypeSpecificParams);
tsp->dwMagnitude = (This->effect.u.periodic.magnitude / 33) * 10;
tsp->lOffset = (This->effect.u.periodic.offset / 33) * 10;
tsp->dwPhase = (This->effect.u.periodic.phase / 33) * 36;
tsp->dwPeriod = (This->effect.u.periodic.period * 1000);
} else if (This->effect.type == FF_CONSTANT) {
LPDICONSTANTFORCE tsp = (LPDICONSTANTFORCE)(peff->lpvTypeSpecificParams);
tsp->lMagnitude = (This->effect.u.constant.level / 33) * 10;
} else if (This->effect.type == FF_SPRING
|| This->effect.type == FF_FRICTION
|| This->effect.type == FF_INERTIA
|| This->effect.type == FF_DAMPER) {
LPDICONDITION tsp = (LPDICONDITION)(peff->lpvTypeSpecificParams);
int i;
for (i = 0; i < 2; ++i) {
tsp[i].lOffset = (This->effect.u.condition[i].center / 33) * 10;
tsp[i].lPositiveCoefficient = (This->effect.u.condition[i].right_coeff / 33) * 10;
tsp[i].lNegativeCoefficient = (This->effect.u.condition[i].left_coeff / 33) * 10;
tsp[i].dwPositiveSaturation = (This->effect.u.condition[i].right_saturation / 33) * 10;
tsp[i].dwNegativeSaturation = (This->effect.u.condition[i].left_saturation / 33) * 10;
tsp[i].lDeadBand = (This->effect.u.condition[i].deadband / 33) * 10;
}
} else if (This->effect.type == FF_RAMP) {
LPDIRAMPFORCE tsp = (LPDIRAMPFORCE)(peff->lpvTypeSpecificParams);
tsp->lStart = (This->effect.u.ramp.start_level / 33) * 10;
tsp->lEnd = (This->effect.u.ramp.end_level / 33) * 10;
}
}
}
return diErr;
}
static HRESULT WINAPI LinuxInputEffectImpl_Initialize(
LPDIRECTINPUTEFFECT iface,
HINSTANCE hinst,
DWORD dwVersion,
REFGUID rguid)
{
FIXME("(this=%p,%p,%d,%s): stub!\n",
iface, hinst, dwVersion, debugstr_guid(rguid));
return DI_OK;
}
static HRESULT WINAPI LinuxInputEffectImpl_QueryInterface(
LPDIRECTINPUTEFFECT iface,
REFIID riid,
void **ppvObject)
{
LinuxInputEffectImpl* This = (LinuxInputEffectImpl*)iface;
TRACE("(this=%p,%s,%p)\n", This, debugstr_guid(riid), ppvObject);
if (IsEqualGUID(&IID_IUnknown, riid) ||
IsEqualGUID(&IID_IDirectInputEffect, riid)) {
LinuxInputEffectImpl_AddRef(iface);
*ppvObject = This;
return 0;
}
TRACE("Unsupported interface!\n");
return E_FAIL;
}
static HRESULT WINAPI LinuxInputEffectImpl_Start(
LPDIRECTINPUTEFFECT iface,
DWORD dwIterations,
DWORD dwFlags)
{
struct input_event event;
LinuxInputEffectImpl* This = (LinuxInputEffectImpl*)iface;
TRACE("(this=%p,%d,%d)\n", This, dwIterations, dwFlags);
if (!(dwFlags & DIES_NODOWNLOAD)) {
/* Download the effect if necessary */
if (This->effect.id == -1) {
HRESULT res = LinuxInputEffectImpl_Download(iface);
if (res != DI_OK)
return res;
}
}
if (dwFlags & DIES_SOLO) {
FIXME("Solo mode requested: should be stopping all effects here!\n");
}
event.type = EV_FF;
event.code = This->effect.id;
event.value = dwIterations;
if (write(*(This->fd), &event, sizeof(event)) == -1) {
FIXME("Unable to write event. Assuming device disconnected.\n");
return DIERR_INPUTLOST;
}
return DI_OK;
}
static HRESULT WINAPI LinuxInputEffectImpl_SetParameters(
LPDIRECTINPUTEFFECT iface,
LPCDIEFFECT peff,
DWORD dwFlags)
{
LinuxInputEffectImpl* This = (LinuxInputEffectImpl*)iface;
DWORD type = _typeFromGUID(&This->guid);
HRESULT retval = DI_OK;
TRACE("(this=%p,%p,%d)\n", This, peff, dwFlags);
_dump_DIEFFECT(peff, &This->guid);
if ((dwFlags & ~DIEP_NORESTART & ~DIEP_NODOWNLOAD & ~DIEP_START) == 0) {
/* set everything */
dwFlags = DIEP_AXES | DIEP_DIRECTION | DIEP_DURATION | DIEP_ENVELOPE |
DIEP_GAIN | DIEP_SAMPLEPERIOD | DIEP_STARTDELAY | DIEP_TRIGGERBUTTON |
DIEP_TRIGGERREPEATINTERVAL | DIEP_TYPESPECIFICPARAMS;
}
if (dwFlags & DIEP_AXES) {
/* the linux input effect system only supports one or two axes */
if (peff->cAxes > 2)
return DIERR_INVALIDPARAM;
else if (peff->cAxes < 1)
return DIERR_INCOMPLETEEFFECT;
}
/* some of this may look funky, but it's 'cause the linux driver and directx have
* different opinions about which way direction "0" is. directx has 0 along the x
* axis (left), linux has it along the y axis (down). */
if (dwFlags & DIEP_DIRECTION) {
if (peff->cAxes == 1) {
if (peff->dwFlags & DIEFF_CARTESIAN) {
if (dwFlags & DIEP_AXES) {
if (peff->rgdwAxes[0] == DIJOFS_X && peff->rglDirection[0] >= 0)
This->effect.direction = 0x4000;
else if (peff->rgdwAxes[0] == DIJOFS_X && peff->rglDirection[0] < 0)
This->effect.direction = 0xC000;
else if (peff->rgdwAxes[0] == DIJOFS_Y && peff->rglDirection[0] >= 0)
This->effect.direction = 0;
else if (peff->rgdwAxes[0] == DIJOFS_Y && peff->rglDirection[0] < 0)
This->effect.direction = 0x8000;
}
} else {
/* one-axis effects must use cartesian coords */
return DIERR_INVALIDPARAM;
}
} else { /* two axes */
if (peff->dwFlags & DIEFF_CARTESIAN) {
/* avoid divide-by-zero */
if (peff->rglDirection[1] == 0) {
if (peff->rglDirection[0] >= 0)
This->effect.direction = 0x4000;
else if (peff->rglDirection[0] < 0)
This->effect.direction = 0xC000;
} else {
This->effect.direction = (int)(atan(peff->rglDirection[0] / peff->rglDirection[1]) * 0x7FFF / (3 * M_PI));
}
} else {
/* Polar and spherical are the same for 2 axes */
/* Precision is important here, so we do double math with exact constants */
This->effect.direction = (int)(((double)peff->rglDirection[0] - 90) / 35999) * 0x7FFF;
}
}
}
if (dwFlags & DIEP_DURATION)
This->effect.replay.length = peff->dwDuration / 1000;
if (dwFlags & DIEP_ENVELOPE) {
struct ff_envelope* env;
if (This->effect.type == FF_CONSTANT) env = &This->effect.u.constant.envelope;
else if (This->effect.type == FF_PERIODIC) env = &This->effect.u.periodic.envelope;
else if (This->effect.type == FF_RAMP) env = &This->effect.u.ramp.envelope;
else env = NULL;
if (peff->lpEnvelope == NULL) {
/* if this type had an envelope, reset it
* note that length can never be zero, so we set it to something minuscule */
if (env) {
env->attack_length = 0x10;
env->attack_level = 0x7FFF;
env->fade_length = 0x10;
env->fade_level = 0x7FFF;
}
} else {
/* did we get passed an envelope for a type that doesn't even have one? */
if (!env) return DIERR_INVALIDPARAM;
/* copy the envelope */
env->attack_length = peff->lpEnvelope->dwAttackTime / 1000;
env->attack_level = (peff->lpEnvelope->dwAttackLevel / 10) * 32;
env->fade_length = peff->lpEnvelope->dwFadeTime / 1000;
env->fade_level = (peff->lpEnvelope->dwFadeLevel / 10) * 32;
}
}
/* Gain and Sample Period settings are not supported by the linux
* event system */
if (dwFlags & DIEP_GAIN)
TRACE("Gain requested but no gain functionality present.\n");
if (dwFlags & DIEP_SAMPLEPERIOD)
TRACE("Sample period requested but no sample period functionality present.\n");
if (dwFlags & DIEP_STARTDELAY)
This->effect.replay.delay = peff->dwStartDelay / 1000;
if (dwFlags & DIEP_TRIGGERBUTTON) {
if (peff->dwTriggerButton != -1) {
FIXME("Linuxinput button mapping needs redoing, assuming we're using a joystick.\n");
FIXME("Trigger button translation not yet implemented!\n");
}
This->effect.trigger.button = 0;
}
if (dwFlags & DIEP_TRIGGERREPEATINTERVAL)
This->effect.trigger.interval = peff->dwTriggerRepeatInterval / 1000;
if (dwFlags & DIEP_TYPESPECIFICPARAMS) {
if (!(peff->lpvTypeSpecificParams))
return DIERR_INCOMPLETEEFFECT;
if (type == DIEFT_PERIODIC) {
LPCDIPERIODIC tsp;
if (peff->cbTypeSpecificParams != sizeof(DIPERIODIC))
return DIERR_INVALIDPARAM;
tsp = (LPCDIPERIODIC)(peff->lpvTypeSpecificParams);
This->effect.u.periodic.magnitude = (tsp->dwMagnitude / 10) * 32;
This->effect.u.periodic.offset = (tsp->lOffset / 10) * 32;
This->effect.u.periodic.phase = (tsp->dwPhase / 9) * 8; /* == (/ 36 * 32) */
This->effect.u.periodic.period = tsp->dwPeriod / 1000;
} else if (type == DIEFT_CONSTANTFORCE) {
LPCDICONSTANTFORCE tsp;
if (peff->cbTypeSpecificParams != sizeof(DICONSTANTFORCE))
return DIERR_INVALIDPARAM;
tsp = (LPCDICONSTANTFORCE)(peff->lpvTypeSpecificParams);
This->effect.u.constant.level = (tsp->lMagnitude / 10) * 32;
} else if (type == DIEFT_RAMPFORCE) {
LPCDIRAMPFORCE tsp;
if (peff->cbTypeSpecificParams != sizeof(DIRAMPFORCE))
return DIERR_INVALIDPARAM;
tsp = (LPCDIRAMPFORCE)(peff->lpvTypeSpecificParams);
This->effect.u.ramp.start_level = (tsp->lStart / 10) * 32;
This->effect.u.ramp.end_level = (tsp->lStart / 10) * 32;
} else if (type == DIEFT_CONDITION) {
LPCDICONDITION tsp = (LPCDICONDITION)(peff->lpvTypeSpecificParams);
if (peff->cbTypeSpecificParams == sizeof(DICONDITION)) {
/* One condition block. This needs to be rotated to direction,
* and expanded to separate x and y conditions. */
int i;
double factor[2];
factor[0] = asin((This->effect.direction * 3.0 * M_PI) / 0x7FFF);
factor[1] = acos((This->effect.direction * 3.0 * M_PI) / 0x7FFF);
for (i = 0; i < 2; ++i) {
This->effect.u.condition[i].center = (int)(factor[i] * (tsp->lOffset / 10) * 32);
This->effect.u.condition[i].right_coeff = (int)(factor[i] * (tsp->lPositiveCoefficient / 10) * 32);
This->effect.u.condition[i].left_coeff = (int)(factor[i] * (tsp->lNegativeCoefficient / 10) * 32);
This->effect.u.condition[i].right_saturation = (int)(factor[i] * (tsp->dwPositiveSaturation / 10) * 32);
This->effect.u.condition[i].left_saturation = (int)(factor[i] * (tsp->dwNegativeSaturation / 10) * 32);
This->effect.u.condition[i].deadband = (int)(factor[i] * (tsp->lDeadBand / 10) * 32);
}
} else if (peff->cbTypeSpecificParams == 2 * sizeof(DICONDITION)) {
/* Two condition blocks. Direct parameter copy. */
int i;
for (i = 0; i < 2; ++i) {
This->effect.u.condition[i].center = (tsp[i].lOffset / 10) * 32;
This->effect.u.condition[i].right_coeff = (tsp[i].lPositiveCoefficient / 10) * 32;
This->effect.u.condition[i].left_coeff = (tsp[i].lNegativeCoefficient / 10) * 32;
This->effect.u.condition[i].right_saturation = (tsp[i].dwPositiveSaturation / 10) * 32;
This->effect.u.condition[i].left_saturation = (tsp[i].dwNegativeSaturation / 10) * 32;
This->effect.u.condition[i].deadband = (tsp[i].lDeadBand / 10) * 32;
}
} else {
return DIERR_INVALIDPARAM;
}
} else {
FIXME("Custom force types are not supported\n");
return DIERR_INVALIDPARAM;
}
}
if (!(dwFlags & DIEP_NODOWNLOAD))
retval = LinuxInputEffectImpl_Download(iface);
if (retval != DI_OK)
return DI_DOWNLOADSKIPPED;
if (dwFlags & DIEP_NORESTART)
TRACE("DIEP_NORESTART: not handled (we have no control of that).\n");
if (dwFlags & DIEP_START)
retval = LinuxInputEffectImpl_Start(iface, 1, 0);
if (retval != DI_OK)
return retval;
return DI_OK;
}
static ULONG WINAPI LinuxInputEffectImpl_Release(
LPDIRECTINPUTEFFECT iface)
{
LinuxInputEffectImpl *This = (LinuxInputEffectImpl *)iface;
ULONG ref = InterlockedDecrement(&(This->ref));
if (ref == 0)
HeapFree(GetProcessHeap(), 0, This);
return ref;
}
static HRESULT WINAPI LinuxInputEffectImpl_Stop(
LPDIRECTINPUTEFFECT iface)
{
struct input_event event;
LinuxInputEffectImpl *This = (LinuxInputEffectImpl *)iface;
TRACE("(this=%p)\n", This);
event.type = EV_FF;
event.code = This->effect.id;
event.value = 0;
/* we don't care about the success or failure of this call */
write(*(This->fd), &event, sizeof(event));
return DI_OK;
}
static HRESULT WINAPI LinuxInputEffectImpl_Unload(
LPDIRECTINPUTEFFECT iface)
{
LinuxInputEffectImpl *This = (LinuxInputEffectImpl *)iface;
TRACE("(this=%p)\n", This);
/* Erase the downloaded effect */
if (ioctl(*(This->fd), EVIOCRMFF, This->effect.id) == -1)
return DIERR_INVALIDPARAM;
/* Mark the effect as deallocated */
This->effect.id = -1;
return DI_OK;
}
/******************************************************************************
* LinuxInputEffect
*/
HRESULT linuxinput_create_effect(
int* fd,
REFGUID rguid,
LPDIRECTINPUTEFFECT* peff)
{
LinuxInputEffectImpl* newEffect = HeapAlloc(GetProcessHeap(),
HEAP_ZERO_MEMORY, sizeof(LinuxInputEffectImpl));
DWORD type = _typeFromGUID(rguid);
newEffect->lpVtbl = &LinuxInputEffectVtbl;
newEffect->ref = 1;
memcpy(&(newEffect->guid), rguid, sizeof(*rguid));
newEffect->fd = fd;
/* set the type. this cannot be changed over the effect's life. */
switch (type) {
case DIEFT_PERIODIC:
newEffect->effect.type = FF_PERIODIC;
if (IsEqualGUID(rguid, &GUID_Sine)) {
newEffect->effect.u.periodic.waveform = FF_SINE;
} else if (IsEqualGUID(rguid, &GUID_Triangle)) {
newEffect->effect.u.periodic.waveform = FF_TRIANGLE;
} else if (IsEqualGUID(rguid, &GUID_Square)) {
newEffect->effect.u.periodic.waveform = FF_SQUARE;
} else if (IsEqualGUID(rguid, &GUID_SawtoothUp)) {
newEffect->effect.u.periodic.waveform = FF_SAW_UP;
} else if (IsEqualGUID(rguid, &GUID_SawtoothDown)) {
newEffect->effect.u.periodic.waveform = FF_SAW_DOWN;
}
break;
case DIEFT_CONSTANTFORCE:
newEffect->effect.type = FF_CONSTANT;
break;
case DIEFT_RAMPFORCE:
newEffect->effect.type = FF_RAMP;
break;
case DIEFT_CONDITION:
if (IsEqualGUID(rguid, &GUID_Spring)) {
newEffect->effect.type = FF_SPRING;
} else if (IsEqualGUID(rguid, &GUID_Friction)) {
newEffect->effect.type = FF_FRICTION;
} else if (IsEqualGUID(rguid, &GUID_Inertia)) {
newEffect->effect.type = FF_INERTIA;
} else if (IsEqualGUID(rguid, &GUID_Damper)) {
newEffect->effect.type = FF_DAMPER;
}
break;
case DIEFT_CUSTOMFORCE:
FIXME("Custom forces are not supported.\n");
HeapFree(GetProcessHeap(), 0, newEffect);
return DIERR_INVALIDPARAM;
default:
FIXME("Unknown force type.\n");
HeapFree(GetProcessHeap(), 0, newEffect);
return DIERR_INVALIDPARAM;
}
/* mark as non-uploaded */
newEffect->effect.id = -1;
*peff = (LPDIRECTINPUTEFFECT)newEffect;
TRACE("Creating linux input system effect (%p) with guid %s\n",
*peff, _dump_dinput_GUID(rguid));
return DI_OK;
}
HRESULT linuxinput_get_info_A(
int fd,
REFGUID rguid,
LPDIEFFECTINFOA info)
{
DWORD type = _typeFromGUID(rguid);
TRACE("(%d, %s, %p) type=%d\n", fd, _dump_dinput_GUID(rguid), info, type);
if (!info) return E_POINTER;
if (info->dwSize != sizeof(DIEFFECTINFOA)) return DIERR_INVALIDPARAM;
info->guid = *rguid;
info->dwEffType = type;
/* the event device API does not support querying for all these things
* therefore we assume that we have support for them
* that's not as dangerous as it sounds, since drivers are allowed to
* ignore parameters they claim to support anyway */
info->dwEffType |= DIEFT_DEADBAND | DIEFT_FFATTACK | DIEFT_FFFADE
| DIEFT_POSNEGCOEFFICIENTS | DIEFT_POSNEGSATURATION
| DIEFT_SATURATION | DIEFT_STARTDELAY;
/* again, assume we have support for everything */
info->dwStaticParams = DIEP_ALLPARAMS;
info->dwDynamicParams = info->dwStaticParams;
/* yes, this is windows behavior (print the GUID_Name for name) */
strcpy((char*)&(info->tszName), _dump_dinput_GUID(rguid));
return DI_OK;
}
HRESULT linuxinput_get_info_W(
int fd,
REFGUID rguid,
LPDIEFFECTINFOW info)
{
DWORD type = _typeFromGUID(rguid);
TRACE("(%d, %s, %p) type=%d\n", fd, _dump_dinput_GUID(rguid), info, type);
if (!info) return E_POINTER;
if (info->dwSize != sizeof(DIEFFECTINFOW)) return DIERR_INVALIDPARAM;
info->guid = *rguid;
info->dwEffType = type;
/* the event device API does not support querying for all these things
* therefore we assume that we have support for them
* that's not as dangerous as it sounds, since drivers are allowed to
* ignore parameters they claim to support anyway */
info->dwEffType |= DIEFT_DEADBAND | DIEFT_FFATTACK | DIEFT_FFFADE
| DIEFT_POSNEGCOEFFICIENTS | DIEFT_POSNEGSATURATION
| DIEFT_SATURATION | DIEFT_STARTDELAY;
/* again, assume we have support for everything */
info->dwStaticParams = DIEP_ALLPARAMS;
info->dwDynamicParams = info->dwStaticParams;
/* yes, this is windows behavior (print the GUID_Name for name) */
MultiByteToWideChar(CP_ACP, 0, _dump_dinput_GUID(rguid), -1,
(WCHAR*)&(info->tszName), MAX_PATH);
return DI_OK;
}
static const IDirectInputEffectVtbl LinuxInputEffectVtbl = {
LinuxInputEffectImpl_QueryInterface,
LinuxInputEffectImpl_AddRef,
LinuxInputEffectImpl_Release,
LinuxInputEffectImpl_Initialize,
LinuxInputEffectImpl_GetEffectGuid,
LinuxInputEffectImpl_GetParameters,
LinuxInputEffectImpl_SetParameters,
LinuxInputEffectImpl_Start,
LinuxInputEffectImpl_Stop,
LinuxInputEffectImpl_GetEffectStatus,
LinuxInputEffectImpl_Download,
LinuxInputEffectImpl_Unload,
LinuxInputEffectImpl_Escape
};
#endif /* HAVE_STRUCT_FF_EFFECT_DIRECTION */
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