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sceCtrl.cpp
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sceCtrl.cpp
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// Copyright (c) 2012- PPSSPP Project.
// 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, version 2.0 or later versions.
// 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 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#include <cmath>
#include <mutex>
#include "Core/HLE/HLE.h"
#include "Core/HLE/FunctionWrappers.h"
#include "Core/MIPS/MIPS.h"
#include "Core/CoreTiming.h"
#include "Core/MemMapHelpers.h"
#include "Common/ChunkFile.h"
#include "Core/Util/AudioFormat.h" // for clamp_u8
#include "Core/HLE/sceCtrl.h"
#include "Core/HLE/sceDisplay.h"
#include "Core/HLE/sceKernel.h"
#include "Core/HLE/sceKernelThread.h"
#include "Core/HLE/sceKernelInterrupt.h"
/* Index for the two analog directions */
#define CTRL_ANALOG_X 0
#define CTRL_ANALOG_Y 1
#define CTRL_ANALOG_CENTER 128
#define CTRL_MODE_DIGITAL 0
#define CTRL_MODE_ANALOG 1
const u32 NUM_CTRL_BUFFERS = 64;
enum {
CTRL_WAIT_POSITIVE = 1,
CTRL_WAIT_NEGATIVE = 2,
};
// Returned control data
struct _ctrl_data
{
u32_le frame;
u32_le buttons;
// The PSP has only one stick, but has space for more info.
// The second stick is populated for HD remasters and possibly in the PSP emulator on PS3/Vita.
u8 analog[2][2];
u8 unused[4];
};
struct CtrlLatch {
u32_le btnMake;
u32_le btnBreak;
u32_le btnPress;
u32_le btnRelease;
};
//////////////////////////////////////////////////////////////////////////
// STATE BEGIN
static bool analogEnabled = false;
static int ctrlLatchBufs = 0;
static u32 ctrlOldButtons = 0;
static _ctrl_data ctrlBufs[NUM_CTRL_BUFFERS];
static _ctrl_data ctrlCurrent;
static u32 ctrlBuf = 0;
static u32 ctrlBufRead = 0;
static CtrlLatch latch;
static u32 dialogBtnMake = 0;
static int ctrlIdleReset = -1;
static int ctrlIdleBack = -1;
static int ctrlCycle = 0;
static std::vector<SceUID> waitingThreads;
static std::mutex ctrlMutex;
static int ctrlTimer = -1;
// STATE END
//////////////////////////////////////////////////////////////////////////
// Not savestated, this is emu state.
// Not related to sceCtrl*RapidFire(), although it may do the same thing.
static bool emuRapidFire = false;
static u32 emuRapidFireFrames = 0;
// These buttons are not affected by rapid fire (neither is analog.)
const u32 CTRL_EMU_RAPIDFIRE_MASK = CTRL_UP | CTRL_DOWN | CTRL_LEFT | CTRL_RIGHT;
static void __CtrlUpdateLatch()
{
std::lock_guard<std::mutex> guard(ctrlMutex);
// Copy in the current data to the current buffer.
ctrlBufs[ctrlBuf] = ctrlCurrent;
u32 buttons = ctrlCurrent.buttons;
if (emuRapidFire && (emuRapidFireFrames % 10) < 5)
{
ctrlBufs[ctrlBuf].buttons &= CTRL_EMU_RAPIDFIRE_MASK;
buttons &= CTRL_EMU_RAPIDFIRE_MASK;
}
u32 changed = buttons ^ ctrlOldButtons;
latch.btnMake |= buttons & changed;
latch.btnBreak |= ctrlOldButtons & changed;
latch.btnPress |= buttons;
latch.btnRelease |= ~buttons;
dialogBtnMake |= buttons & changed;
ctrlLatchBufs++;
ctrlOldButtons = buttons;
ctrlBufs[ctrlBuf].frame = (u32) CoreTiming::GetGlobalTimeUs();
if (!analogEnabled)
memset(ctrlBufs[ctrlBuf].analog, CTRL_ANALOG_CENTER, sizeof(ctrlBufs[ctrlBuf].analog));
ctrlBuf = (ctrlBuf + 1) % NUM_CTRL_BUFFERS;
// If we wrapped around, push the read head forward.
// TODO: Is this right?
if (ctrlBufRead == ctrlBuf)
ctrlBufRead = (ctrlBufRead + 1) % NUM_CTRL_BUFFERS;
}
static int __CtrlResetLatch()
{
int oldBufs = ctrlLatchBufs;
memset(&latch, 0, sizeof(CtrlLatch));
ctrlLatchBufs = 0;
return oldBufs;
}
u32 __CtrlPeekButtons()
{
std::lock_guard<std::mutex> guard(ctrlMutex);
return ctrlCurrent.buttons;
}
void __CtrlPeekAnalog(int stick, float *x, float *y)
{
std::lock_guard<std::mutex> guard(ctrlMutex);
*x = (ctrlCurrent.analog[stick][CTRL_ANALOG_X] - 127.5f) / 127.5f;
*y = -(ctrlCurrent.analog[stick][CTRL_ANALOG_Y] - 127.5f) / 127.5f;
}
u32 __CtrlReadLatch()
{
u32 ret = dialogBtnMake;
dialogBtnMake = 0;
return ret;
}
// Functions so that the rest of the emulator can control what the sceCtrl interface should return
// to the game:
void __CtrlButtonDown(u32 buttonBit)
{
std::lock_guard<std::mutex> guard(ctrlMutex);
ctrlCurrent.buttons |= buttonBit;
}
void __CtrlButtonUp(u32 buttonBit)
{
std::lock_guard<std::mutex> guard(ctrlMutex);
ctrlCurrent.buttons &= ~buttonBit;
}
void __CtrlSetAnalogX(float x, int stick)
{
u8 scaled = clamp_u8((int)ceilf(x * 127.5f + 127.5f));
std::lock_guard<std::mutex> guard(ctrlMutex);
ctrlCurrent.analog[stick][CTRL_ANALOG_X] = scaled;
}
void __CtrlSetAnalogY(float y, int stick)
{
u8 scaled = clamp_u8((int)ceilf(-y * 127.5f + 127.5f));
std::lock_guard<std::mutex> guard(ctrlMutex);
ctrlCurrent.analog[stick][CTRL_ANALOG_Y] = scaled;
}
void __CtrlSetRapidFire(bool state)
{
emuRapidFire = state;
}
static int __CtrlReadSingleBuffer(PSPPointer<_ctrl_data> data, bool negative)
{
if (data.IsValid())
{
*data = ctrlBufs[ctrlBufRead];
ctrlBufRead = (ctrlBufRead + 1) % NUM_CTRL_BUFFERS;
// Mask out buttons games aren't allowed to see.
data->buttons &= CTRL_MASK_USER;
if (negative)
data->buttons = ~data->buttons;
return 1;
}
return 0;
}
static int __CtrlReadBuffer(u32 ctrlDataPtr, u32 nBufs, bool negative, bool peek)
{
if (nBufs > NUM_CTRL_BUFFERS)
return SCE_KERNEL_ERROR_INVALID_SIZE;
if (!peek && !__KernelIsDispatchEnabled())
return SCE_KERNEL_ERROR_CAN_NOT_WAIT;
if (!peek && __IsInInterrupt())
return SCE_KERNEL_ERROR_ILLEGAL_CONTEXT;
u32 resetRead = ctrlBufRead;
u32 availBufs;
// Peeks always work, they just go go from now X buffers.
if (peek)
availBufs = nBufs;
else
{
availBufs = (ctrlBuf - ctrlBufRead + NUM_CTRL_BUFFERS) % NUM_CTRL_BUFFERS;
if (availBufs > nBufs)
availBufs = nBufs;
}
ctrlBufRead = (ctrlBuf - availBufs + NUM_CTRL_BUFFERS) % NUM_CTRL_BUFFERS;
int done = 0;
auto data = PSPPointer<_ctrl_data>::Create(ctrlDataPtr);
for (u32 i = 0; i < availBufs; ++i)
done += __CtrlReadSingleBuffer(data++, negative);
if (peek)
ctrlBufRead = resetRead;
return done;
}
static void __CtrlDoSample()
{
// This samples the ctrl data into the buffers and updates the latch.
__CtrlUpdateLatch();
// Wake up a single thread that was waiting for the buffer.
retry:
if (!waitingThreads.empty() && ctrlBuf != ctrlBufRead)
{
SceUID threadID = waitingThreads[0];
waitingThreads.erase(waitingThreads.begin());
u32 error;
SceUID wVal = __KernelGetWaitID(threadID, WAITTYPE_CTRL, error);
// Make sure it didn't get woken or something.
if (wVal == 0)
goto retry;
PSPPointer<_ctrl_data> ctrlDataPtr;
ctrlDataPtr = __KernelGetWaitValue(threadID, error);
int retVal = __CtrlReadSingleBuffer(ctrlDataPtr, wVal == CTRL_WAIT_NEGATIVE);
__KernelResumeThreadFromWait(threadID, retVal);
__KernelReSchedule("ctrl buffers updated");
}
}
static void __CtrlVblank()
{
emuRapidFireFrames++;
// This always runs, so make sure we're in vblank mode.
if (ctrlCycle == 0)
__CtrlDoSample();
}
static void __CtrlTimerUpdate(u64 userdata, int cyclesLate)
{
// This only runs in timer mode (ctrlCycle > 0.)
_dbg_assert_msg_(SCECTRL, ctrlCycle > 0, "Ctrl: sampling cycle should be > 0");
CoreTiming::ScheduleEvent(usToCycles(ctrlCycle) - cyclesLate, ctrlTimer, 0);
__CtrlDoSample();
}
void __CtrlInit()
{
ctrlTimer = CoreTiming::RegisterEvent("CtrlSampleTimer", __CtrlTimerUpdate);
__DisplayListenVblank(__CtrlVblank);
ctrlIdleReset = -1;
ctrlIdleBack = -1;
ctrlCycle = 0;
std::lock_guard<std::mutex> guard(ctrlMutex);
ctrlBuf = 1;
ctrlBufRead = 0;
ctrlOldButtons = 0;
ctrlLatchBufs = 0;
dialogBtnMake = 0;
memset(&latch, 0, sizeof(latch));
// Start with everything released.
latch.btnRelease = 0xffffffff;
memset(&ctrlCurrent, 0, sizeof(ctrlCurrent));
memset(ctrlCurrent.analog, CTRL_ANALOG_CENTER, sizeof(ctrlCurrent.analog));
analogEnabled = false;
for (u32 i = 0; i < NUM_CTRL_BUFFERS; i++)
memcpy(&ctrlBufs[i], &ctrlCurrent, sizeof(_ctrl_data));
}
void __CtrlDoState(PointerWrap &p)
{
std::lock_guard<std::mutex> guard(ctrlMutex);
auto s = p.Section("sceCtrl", 1, 3);
if (!s)
return;
p.Do(analogEnabled);
p.Do(ctrlLatchBufs);
p.Do(ctrlOldButtons);
p.DoVoid(ctrlBufs, sizeof(ctrlBufs));
if (s <= 2) {
_ctrl_data dummy = {0};
p.Do(dummy);
}
p.Do(ctrlBuf);
p.Do(ctrlBufRead);
p.Do(latch);
if (s == 1) {
dialogBtnMake = 0;
} else {
p.Do(dialogBtnMake);
}
p.Do(ctrlIdleReset);
p.Do(ctrlIdleBack);
p.Do(ctrlCycle);
SceUID dv = 0;
p.Do(waitingThreads, dv);
p.Do(ctrlTimer);
CoreTiming::RestoreRegisterEvent(ctrlTimer, "CtrlSampleTimer", __CtrlTimerUpdate);
}
void __CtrlShutdown()
{
waitingThreads.clear();
}
static u32 sceCtrlSetSamplingCycle(u32 cycle)
{
DEBUG_LOG(SCECTRL, "sceCtrlSetSamplingCycle(%u)", cycle);
if ((cycle > 0 && cycle < 5555) || cycle > 20000)
{
WARN_LOG(SCECTRL, "SCE_KERNEL_ERROR_INVALID_VALUE=sceCtrlSetSamplingCycle(%u)", cycle);
return SCE_KERNEL_ERROR_INVALID_VALUE;
}
u32 prev = ctrlCycle;
ctrlCycle = cycle;
if (prev > 0)
CoreTiming::UnscheduleEvent(ctrlTimer, 0);
if (cycle > 0)
CoreTiming::ScheduleEvent(usToCycles(ctrlCycle), ctrlTimer, 0);
return prev;
}
static int sceCtrlGetSamplingCycle(u32 cyclePtr)
{
DEBUG_LOG(SCECTRL, "sceCtrlGetSamplingCycle(%08x)", cyclePtr);
if (Memory::IsValidAddress(cyclePtr))
Memory::Write_U32(ctrlCycle, cyclePtr);
return 0;
}
static u32 sceCtrlSetSamplingMode(u32 mode)
{
u32 retVal = 0;
DEBUG_LOG(SCECTRL, "sceCtrlSetSamplingMode(%i)", mode);
if (mode > 1)
return SCE_KERNEL_ERROR_INVALID_MODE;
retVal = analogEnabled == true ? CTRL_MODE_ANALOG : CTRL_MODE_DIGITAL;
analogEnabled = mode == CTRL_MODE_ANALOG ? true : false;
return retVal;
}
static int sceCtrlGetSamplingMode(u32 modePtr)
{
u32 retVal = analogEnabled == true ? CTRL_MODE_ANALOG : CTRL_MODE_DIGITAL;
DEBUG_LOG(SCECTRL, "%d=sceCtrlGetSamplingMode(%08x)", retVal, modePtr);
if (Memory::IsValidAddress(modePtr))
Memory::Write_U32(retVal, modePtr);
return 0;
}
static int sceCtrlSetIdleCancelThreshold(int idleReset, int idleBack)
{
DEBUG_LOG(SCECTRL, "FAKE sceCtrlSetIdleCancelThreshold(%d, %d)", idleReset, idleBack);
if (idleReset < -1 || idleBack < -1 || idleReset > 128 || idleBack > 128)
return SCE_KERNEL_ERROR_INVALID_VALUE;
ctrlIdleReset = idleReset;
ctrlIdleBack = idleBack;
return 0;
}
static int sceCtrlGetIdleCancelThreshold(u32 idleResetPtr, u32 idleBackPtr)
{
DEBUG_LOG(SCECTRL, "sceCtrlSetIdleCancelThreshold(%08x, %08x)", idleResetPtr, idleBackPtr);
if (idleResetPtr && !Memory::IsValidAddress(idleResetPtr))
return SCE_KERNEL_ERROR_PRIV_REQUIRED;
if (idleBackPtr && !Memory::IsValidAddress(idleBackPtr))
return SCE_KERNEL_ERROR_PRIV_REQUIRED;
if (idleResetPtr)
Memory::Write_U32(ctrlIdleReset, idleResetPtr);
if (idleBackPtr)
Memory::Write_U32(ctrlIdleBack, idleBackPtr);
return 0;
}
static int sceCtrlReadBufferPositive(u32 ctrlDataPtr, u32 nBufs)
{
int done = __CtrlReadBuffer(ctrlDataPtr, nBufs, false, false);
hleEatCycles(330);
if (done != 0)
{
DEBUG_LOG(SCECTRL, "%d=sceCtrlReadBufferPositive(%08x, %i)", done, ctrlDataPtr, nBufs);
}
else
{
waitingThreads.push_back(__KernelGetCurThread());
__KernelWaitCurThread(WAITTYPE_CTRL, CTRL_WAIT_POSITIVE, ctrlDataPtr, 0, false, "ctrl buffer waited");
DEBUG_LOG(SCECTRL, "sceCtrlReadBufferPositive(%08x, %i) - waiting", ctrlDataPtr, nBufs);
}
return done;
}
static int sceCtrlReadBufferNegative(u32 ctrlDataPtr, u32 nBufs)
{
int done = __CtrlReadBuffer(ctrlDataPtr, nBufs, true, false);
hleEatCycles(330);
if (done != 0)
{
DEBUG_LOG(SCECTRL, "%d=sceCtrlReadBufferNegative(%08x, %i)", done, ctrlDataPtr, nBufs);
}
else
{
waitingThreads.push_back(__KernelGetCurThread());
__KernelWaitCurThread(WAITTYPE_CTRL, CTRL_WAIT_NEGATIVE, ctrlDataPtr, 0, false, "ctrl buffer waited");
DEBUG_LOG(SCECTRL, "sceCtrlReadBufferNegative(%08x, %i) - waiting", ctrlDataPtr, nBufs);
}
return done;
}
static int sceCtrlPeekBufferPositive(u32 ctrlDataPtr, u32 nBufs)
{
int done = __CtrlReadBuffer(ctrlDataPtr, nBufs, false, true);
DEBUG_LOG(SCECTRL, "%d=sceCtrlPeekBufferPositive(%08x, %i)", done, ctrlDataPtr, nBufs);
hleEatCycles(330);
return done;
}
static int sceCtrlPeekBufferNegative(u32 ctrlDataPtr, u32 nBufs)
{
int done = __CtrlReadBuffer(ctrlDataPtr, nBufs, true, true);
DEBUG_LOG(SCECTRL, "%d=sceCtrlPeekBufferNegative(%08x, %i)", done, ctrlDataPtr, nBufs);
hleEatCycles(330);
return done;
}
void __CtrlWriteUserLatch(CtrlLatch *userLatch) {
*userLatch = latch;
userLatch->btnBreak &= CTRL_MASK_USER;
userLatch->btnMake &= CTRL_MASK_USER;
userLatch->btnPress &= CTRL_MASK_USER;
userLatch->btnRelease &= CTRL_MASK_USER;
}
static u32 sceCtrlPeekLatch(u32 latchDataPtr) {
auto userLatch = PSPPointer<CtrlLatch>::Create(latchDataPtr);
if (userLatch.IsValid()) {
__CtrlWriteUserLatch(userLatch);
}
return hleLogSuccessI(SCECTRL, ctrlLatchBufs);
}
static u32 sceCtrlReadLatch(u32 latchDataPtr) {
auto userLatch = PSPPointer<CtrlLatch>::Create(latchDataPtr);
if (userLatch.IsValid()) {
__CtrlWriteUserLatch(userLatch);
}
return hleLogSuccessI(SCECTRL, __CtrlResetLatch());
}
static const HLEFunction sceCtrl[] =
{
{0X3E65A0EA, nullptr, "sceCtrlInit", '?', "" }, //(int unknown), init with 0
{0X1F4011E6, &WrapU_U<sceCtrlSetSamplingMode>, "sceCtrlSetSamplingMode", 'x', "x" },
{0X6A2774F3, &WrapU_U<sceCtrlSetSamplingCycle>, "sceCtrlSetSamplingCycle", 'x', "x" },
{0X02BAAD91, &WrapI_U<sceCtrlGetSamplingCycle>, "sceCtrlGetSamplingCycle", 'i', "x" },
{0XDA6B76A1, &WrapI_U<sceCtrlGetSamplingMode>, "sceCtrlGetSamplingMode", 'i', "x" },
{0X1F803938, &WrapI_UU<sceCtrlReadBufferPositive>, "sceCtrlReadBufferPositive", 'i', "xx"},
{0X3A622550, &WrapI_UU<sceCtrlPeekBufferPositive>, "sceCtrlPeekBufferPositive", 'i', "xx"},
{0XC152080A, &WrapI_UU<sceCtrlPeekBufferNegative>, "sceCtrlPeekBufferNegative", 'i', "xx"},
{0X60B81F86, &WrapI_UU<sceCtrlReadBufferNegative>, "sceCtrlReadBufferNegative", 'i', "xx"},
{0XB1D0E5CD, &WrapU_U<sceCtrlPeekLatch>, "sceCtrlPeekLatch", 'i', "x" },
{0X0B588501, &WrapU_U<sceCtrlReadLatch>, "sceCtrlReadLatch", 'i', "x" },
{0X348D99D4, nullptr, "sceCtrlSetSuspendingExtraSamples", '?', "" },
{0XAF5960F3, nullptr, "sceCtrlGetSuspendingExtraSamples", '?', "" },
{0XA68FD260, nullptr, "sceCtrlClearRapidFire", '?', "" },
{0X6841BE1A, nullptr, "sceCtrlSetRapidFire", '?', "" },
{0XA7144800, &WrapI_II<sceCtrlSetIdleCancelThreshold>, "sceCtrlSetIdleCancelThreshold", 'i', "ii"},
{0X687660FA, &WrapI_UU<sceCtrlGetIdleCancelThreshold>, "sceCtrlGetIdleCancelThreshold", 'i', "xx"},
};
void Register_sceCtrl()
{
RegisterModule("sceCtrl", ARRAY_SIZE(sceCtrl), sceCtrl);
}
void Register_sceCtrl_driver()
{
RegisterModule("sceCtrl_driver", ARRAY_SIZE(sceCtrl), sceCtrl);
}