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project64/Source/Project64-core/N64System/MemoryHandler/AudioInterfaceHandler.cpp

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#include "stdafx.h"
#include "AudioInterfaceHandler.h"
#include <Project64-core\N64System\N64System.h>
#include <Project64-core\N64System\Mips\Register.h>
#include <Project64-core\N64System\SystemGlobals.h>
AudioInterfaceReg::AudioInterfaceReg(uint32_t * _AudioInterface) :
AI_DRAM_ADDR_REG(_AudioInterface[0]),
AI_LEN_REG(_AudioInterface[1]),
AI_CONTROL_REG(_AudioInterface[2]),
AI_STATUS_REG(_AudioInterface[3]),
AI_DACRATE_REG(_AudioInterface[4]),
AI_BITRATE_REG(_AudioInterface[5])
{
}
AudioInterfaceHandler::AudioInterfaceHandler(CN64System & System, CRegisters & Reg) :
AudioInterfaceReg(Reg.m_Audio_Interface),
m_System(System),
m_Reg(Reg),
m_Plugins(System.GetPlugins()),
m_PC(Reg.m_PROGRAM_COUNTER),
m_Status(0),
m_SecondBuff(0),
m_BytesPerSecond(0),
m_CountsPerByte(System.AiCountPerBytes()),
m_FramesPerSecond(60)
{
SystemReset();
System.RegisterCallBack(CN64SystemCB_Reset, this, (CN64System::CallBackFunction)stSystemReset);
System.RegisterCallBack(CN64SystemCB_LoadedGameState, this, (CN64System::CallBackFunction)stLoadedGameState);
}
AudioInterfaceHandler::~AudioInterfaceHandler()
{
m_System.UnregisterCallBack(CN64SystemCB_Reset, this, (CN64System::CallBackFunction)stSystemReset);
m_System.UnregisterCallBack(CN64SystemCB_LoadedGameState, this, (CN64System::CallBackFunction)stLoadedGameState);
}
bool AudioInterfaceHandler::Read32(uint32_t Address, uint32_t & Value)
{
switch (Address & 0x1FFFFFFF)
{
case 0x04500004:
if (bFixedAudio())
{
Value = GetLength();
}
else
{
if (m_Plugins->Audio()->AiReadLength != nullptr)
{
Value = m_Plugins->Audio()->AiReadLength();
}
else
{
Value = 0;
}
}
break;
case 0x0450000C:
if (bFixedAudio())
{
Value = GetStatus();
}
else
{
Value = AI_STATUS_REG;
}
break;
default:
Value = 0;
if (HaveDebugger())
{
g_Notify->BreakPoint(__FILE__, __LINE__);
}
}
if (GenerateLog() && LogAudioInterface())
{
switch (Address & 0x1FFFFFFF)
{
case 0x04500000: LogMessage("%08X: read from AI_DRAM_ADDR_REG (%08X)", m_PC, Value); break;
case 0x04500004: LogMessage("%08X: read from AI_LEN_REG (%08X)", m_PC, Value); break;
case 0x04500008: LogMessage("%08X: read from AI_CONTROL_REG (%08X)", m_PC, Value); break;
case 0x0450000C: LogMessage("%08X: read from AI_STATUS_REG (%08X)", m_PC, Value); break;
case 0x04500010: LogMessage("%08X: read from AI_DACRATE_REG (%08X)", m_PC, Value); break;
case 0x04500014: LogMessage("%08X: read from AI_BITRATE_REG (%08X)", m_PC, Value); break;
default:
if (HaveDebugger())
{
g_Notify->BreakPoint(__FILE__, __LINE__);
}
}
}
return true;
}
bool AudioInterfaceHandler::Write32(uint32_t Address, uint32_t Value, uint32_t Mask)
{
if (GenerateLog() && LogAudioInterface())
{
switch (Address & 0x1FFFFFFF)
{
case 0x04500000: LogMessage("%08X: Writing 0x%08X (Mask: 0x%08X) to AI_DRAM_ADDR_REG", m_PC, Value, Mask); break;
case 0x04500004: LogMessage("%08X: Writing 0x%08X (Mask: 0x%08X) to AI_LEN_REG", m_PC, Value, Mask); break;
case 0x04500008: LogMessage("%08X: Writing 0x%08X (Mask: 0x%08X) to AI_CONTROL_REG", m_PC, Value, Mask); break;
case 0x0450000C: LogMessage("%08X: Writing 0x%08X (Mask: 0x%08X) to AI_STATUS_REG", m_PC, Value, Mask); break;
case 0x04500010: LogMessage("%08X: Writing 0x%08X (Mask: 0x%08X) to AI_DACRATE_REG", m_PC, Value, Mask); break;
case 0x04500014: LogMessage("%08X: Writing 0x%08X (Mask: 0x%08X) to AI_BITRATE_REG", m_PC, Value, Mask); break;
default:
if (HaveDebugger())
{
g_Notify->BreakPoint(__FILE__, __LINE__);
}
}
}
uint32_t MaskedValue = Value & Mask;
switch (Address & 0x1FFFFFFF)
{
case 0x04500000: AI_DRAM_ADDR_REG = (AI_DRAM_ADDR_REG & ~Mask) | (MaskedValue); break;
case 0x04500004:
AI_LEN_REG = (AI_LEN_REG & ~Mask) | (MaskedValue);
if (bFixedAudio())
{
LenChanged();
}
else
{
if (m_Plugins->Audio()->AiLenChanged != nullptr)
{
m_Plugins->Audio()->AiLenChanged();
}
}
break;
case 0x04500008: AI_CONTROL_REG = (MaskedValue & 1); break;
case 0x0450000C:
m_Reg.MI_INTR_REG &= ~MI_INTR_AI;
m_Reg.m_AudioIntrReg &= ~MI_INTR_AI;
m_Reg.CheckInterrupts();
break;
case 0x04500010:
AI_DACRATE_REG = (AI_DACRATE_REG & ~Mask) | (MaskedValue);
m_Plugins->Audio()->DacrateChanged(m_System.SystemType());
if (bFixedAudio())
{
SetFrequency(AI_DACRATE_REG, m_System.SystemType());
}
break;
case 0x04500014: AI_DACRATE_REG = (AI_BITRATE_REG & ~Mask) | (MaskedValue); break;
default:
if (HaveDebugger())
{
g_Notify->BreakPoint(__FILE__, __LINE__);
}
}
return true;
}
void AudioInterfaceHandler::TimerInterrupt(void)
{
WriteTrace(TraceAudio, TraceDebug, "Start (m_SecondBuff = %d)", m_SecondBuff);
m_Status &= ~AI_STATUS_FIFO_FULL;
g_Reg->MI_INTR_REG |= MI_INTR_AI;
g_Reg->CheckInterrupts();
if (m_SecondBuff != 0)
{
g_SystemTimer->SetTimer(CSystemTimer::AiTimerInterrupt, m_SecondBuff * m_CountsPerByte, false);
m_SecondBuff = 0;
}
else
{
m_Status &= ~AI_STATUS_DMA_BUSY;
}
WriteTrace(TraceAudio, TraceDebug, "Done");
}
void AudioInterfaceHandler::TimerBusy(void)
{
WriteTrace(TraceAudio, TraceDebug, "Start (m_SecondBuff = %d)", m_SecondBuff);
g_Notify->BreakPoint(__FILE__, __LINE__);
m_Status &= ~AI_STATUS_DMA_BUSY;
}
void AudioInterfaceHandler::SetViIntr(uint32_t VI_INTR_TIME)
{
double CountsPerSecond = (uint32_t)((double)VI_INTR_TIME * m_FramesPerSecond);
if (m_BytesPerSecond != 0 && (g_System->AiCountPerBytes() == 0))
{
m_CountsPerByte = (int32_t)((double)CountsPerSecond / (double)m_BytesPerSecond);
}
}
void AudioInterfaceHandler::SetFrequency(uint32_t Dacrate, uint32_t System)
{
WriteTrace(TraceAudio, TraceDebug, "(Dacrate: %X System: %d): AI_BITRATE_REG = %X", Dacrate, System, g_Reg->AI_BITRATE_REG);
uint32_t Frequency;
switch (System)
{
case SYSTEM_PAL: Frequency = 49656530 / (Dacrate + 1); break;
case SYSTEM_MPAL: Frequency = 48628316 / (Dacrate + 1); break;
default: Frequency = 48681812 / (Dacrate + 1); break;
}
//nBlockAlign = 16 / 8 * 2;
m_BytesPerSecond = Frequency * 4;
//m_BytesPerSecond = 194532;
//m_BytesPerSecond = 128024;
m_FramesPerSecond = System == SYSTEM_PAL ? 50 : 60;
}
void AudioInterfaceHandler::LoadedGameState(void)
{
if (bFixedAudio())
{
SetFrequency(m_Reg.AI_DACRATE_REG, SystemType());
}
}
void AudioInterfaceHandler::SystemReset(void)
{
m_SecondBuff = 0;
m_BytesPerSecond = 0;
m_CountsPerByte = g_System->AiCountPerBytes();
if (m_CountsPerByte == 0)
{
m_CountsPerByte = 500;
}
m_FramesPerSecond = 60;
}
uint32_t AudioInterfaceHandler::GetLength(void)
{
WriteTrace(TraceAudio, TraceDebug, "Start (m_SecondBuff = %d)", m_SecondBuff);
uint32_t TimeLeft = g_SystemTimer->GetTimer(CSystemTimer::AiTimerInterrupt), Res = 0;
if (TimeLeft > 0)
{
Res = (TimeLeft / m_CountsPerByte)&~7;
}
WriteTrace(TraceAudio, TraceDebug, "Done (res = %d, TimeLeft = %d)", Res, TimeLeft);
return Res;
}
uint32_t AudioInterfaceHandler::GetStatus(void)
{
WriteTrace(TraceAudio, TraceDebug, "m_Status = %X", m_Status);
return m_Status;
}
void AudioInterfaceHandler::LenChanged()
{
WriteTrace(TraceAudio, TraceDebug, "Start (g_Reg->AI_LEN_REG = %d)", g_Reg->AI_LEN_REG);
if (g_Reg->AI_LEN_REG != 0)
{
if (g_Reg->AI_LEN_REG >= 0x40000)
{
WriteTrace(TraceAudio, TraceDebug, "Ignoring write, to large (%X)", g_Reg->AI_LEN_REG);
}
else
{
m_Status |= AI_STATUS_DMA_BUSY;
uint32_t AudioLeft = g_SystemTimer->GetTimer(CSystemTimer::AiTimerInterrupt);
if (m_SecondBuff == 0)
{
if (AudioLeft == 0)
{
WriteTrace(TraceAudio, TraceDebug, "Set timer AI_LEN_REG: %d m_CountsPerByte: %d", g_Reg->AI_LEN_REG, m_CountsPerByte);
g_SystemTimer->SetTimer(CSystemTimer::AiTimerInterrupt, g_Reg->AI_LEN_REG * m_CountsPerByte, false);
}
else
{
WriteTrace(TraceAudio, TraceDebug, "Increasing second buffer (m_SecondBuff %d Increase: %d)", m_SecondBuff, g_Reg->AI_LEN_REG);
m_SecondBuff += g_Reg->AI_LEN_REG;
m_Status |= AI_STATUS_FIFO_FULL;
}
}
else
{
g_Notify->BreakPoint(__FILE__, __LINE__);
}
}
}
else
{
WriteTrace(TraceAudio, TraceDebug, "Reset timer to 0");
g_SystemTimer->StopTimer(CSystemTimer::AiTimerBusy);
g_SystemTimer->StopTimer(CSystemTimer::AiTimerInterrupt);
m_SecondBuff = 0;
m_Status = 0;
}
if (g_Plugins->Audio()->AiLenChanged != nullptr)
{
WriteTrace(TraceAudio, TraceDebug, "Calling plugin AiLenChanged");
g_Plugins->Audio()->AiLenChanged();
WriteTrace(TraceAudio, TraceDebug, "Plugin AiLenChanged Done");
}
WriteTrace(TraceAudio, TraceDebug, "Done");
}
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