173 lines
4.8 KiB
C++
173 lines
4.8 KiB
C++
// Copyright (C) 2003-2008 Dolphin 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.
|
|
|
|
// 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 SVN repository and contact information can be found at
|
|
// http://code.google.com/p/dolphin-emu/
|
|
|
|
#include <string.h>
|
|
|
|
#include "MemoryUtil.h"
|
|
#include "Thread.h"
|
|
#include "OpcodeDecoding.h"
|
|
|
|
#include "Fifo.h"
|
|
|
|
extern u8* g_pVideoData;
|
|
|
|
bool fifoStateRun = true;
|
|
|
|
// STATE_TO_SAVE
|
|
static u8 *videoBuffer;
|
|
static int size = 0;
|
|
|
|
void Fifo_DoState(PointerWrap &p)
|
|
{
|
|
p.DoArray(videoBuffer, FIFO_SIZE);
|
|
p.Do(size);
|
|
}
|
|
|
|
void Fifo_Init()
|
|
{
|
|
videoBuffer = (u8*)AllocateMemoryPages(FIFO_SIZE);
|
|
fifoStateRun = true;
|
|
}
|
|
|
|
void Fifo_Shutdown()
|
|
{
|
|
FreeMemoryPages(videoBuffer, FIFO_SIZE);
|
|
fifoStateRun = false;
|
|
}
|
|
|
|
void Fifo_Stop()
|
|
{
|
|
fifoStateRun = false;
|
|
}
|
|
|
|
u8* FAKE_GetFifoStartPtr()
|
|
{
|
|
return videoBuffer;
|
|
}
|
|
|
|
u8* FAKE_GetFifoEndPtr()
|
|
{
|
|
return &videoBuffer[size];
|
|
}
|
|
|
|
void Video_SendFifoData(u8* _uData)
|
|
{
|
|
// TODO (mb2): unrolled loop faster than memcpy here?
|
|
memcpy(videoBuffer + size, _uData, 32);
|
|
size += 32;
|
|
if (size + 32 >= FIFO_SIZE)
|
|
{
|
|
int pos = (int)(g_pVideoData-videoBuffer);
|
|
//if (size-pos > pos)
|
|
//{
|
|
// PanicAlert("FIFO out of bounds (sz = %i, at %08x)", FAKE_GetFifoSize(), readptr);
|
|
//}
|
|
memmove(&videoBuffer[0], &videoBuffer[pos], size - pos );
|
|
size -= pos;
|
|
g_pVideoData = FAKE_GetFifoStartPtr();
|
|
}
|
|
OpcodeDecoder_Run();
|
|
}
|
|
|
|
|
|
//TODO - turn inside out, have the "reader" ask for bytes instead
|
|
// See Core.cpp for threading idea
|
|
void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
|
|
{
|
|
SCPFifoStruct &_fifo = *video_initialize.pCPFifo;
|
|
#if defined(THREAD_VIDEO_WAKEUP_ONIDLE) && defined(_WIN32)
|
|
HANDLE hEventOnIdle= OpenEventA(EVENT_ALL_ACCESS,FALSE,(LPCSTR)"EventOnIdle");
|
|
if (hEventOnIdle==NULL) PanicAlert("Fifo_EnterLoop() -> EventOnIdle NULL");
|
|
#endif
|
|
|
|
#ifdef _WIN32
|
|
// TODO(ector): Don't peek so often!
|
|
while (video_initialize.pPeekMessages())
|
|
#else
|
|
while (fifoStateRun)
|
|
#endif
|
|
{
|
|
#if defined(THREAD_VIDEO_WAKEUP_ONIDLE) && defined(_WIN32)
|
|
if (MsgWaitForMultipleObjects(1, &hEventOnIdle, FALSE, 1L, QS_ALLEVENTS) == WAIT_ABANDONED)
|
|
break;
|
|
#endif
|
|
if (_fifo.CPReadWriteDistance < 1) //fifo.CPLoWatermark)
|
|
#if defined(THREAD_VIDEO_WAKEUP_ONIDLE) && defined(_WIN32)
|
|
continue;
|
|
#else
|
|
Common::SleepCurrentThread(1);
|
|
#endif
|
|
//etc...
|
|
|
|
// check if we are able to run this buffer
|
|
if ((_fifo.bFF_GPReadEnable) && !(_fifo.bFF_BPEnable && _fifo.bFF_Breakpoint))
|
|
{
|
|
#if defined(THREAD_VIDEO_WAKEUP_ONIDLE) && defined(_WIN32)
|
|
while(_fifo.CPReadWriteDistance > 0)
|
|
#else
|
|
int count = 200;
|
|
while(_fifo.CPReadWriteDistance > 0 && count)
|
|
#endif
|
|
{
|
|
// check if we are on a breakpoint
|
|
if (_fifo.bFF_BPEnable)
|
|
{
|
|
if (_fifo.CPReadPointer == _fifo.CPBreakpoint)
|
|
{
|
|
_fifo.bFF_Breakpoint = 1;
|
|
video_initialize.pUpdateInterrupts();
|
|
break;
|
|
}
|
|
}
|
|
|
|
// read the data and send it to the VideoPlugin
|
|
u8 *uData = video_initialize.pGetMemoryPointer(_fifo.CPReadPointer);
|
|
#ifdef _WIN32
|
|
EnterCriticalSection(&_fifo.sync);
|
|
#else
|
|
_fifo.sync->Enter();
|
|
#endif
|
|
_fifo.CPReadPointer += 32;
|
|
Video_SendFifoData(uData);
|
|
|
|
#ifdef _WIN32
|
|
InterlockedExchangeAdd((LONG*)&_fifo.CPReadWriteDistance, -32);
|
|
LeaveCriticalSection(&_fifo.sync);
|
|
#else
|
|
Common::InterlockedExchangeAdd((int*)&_fifo.CPReadWriteDistance, -32);
|
|
_fifo.sync->Leave();
|
|
#endif
|
|
|
|
// increase the ReadPtr
|
|
if (_fifo.CPReadPointer >= _fifo.CPEnd)
|
|
{
|
|
_fifo.CPReadPointer = _fifo.CPBase;
|
|
//LOG(COMMANDPROCESSOR, "BUFFER LOOP");
|
|
}
|
|
#ifndef THREAD_VIDEO_WAKEUP_ONIDLE
|
|
count--;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
}
|
|
#if defined(THREAD_VIDEO_WAKEUP_ONIDLE) && defined(_WIN32)
|
|
CloseHandle(hEventOnIdle);
|
|
#endif
|
|
}
|
|
|