#include "stdafx.h" CAudio::CAudio (void) { Reset(); } CAudio::~CAudio (void) { } void CAudio::Reset ( void ) { m_SecondBuff = 0; m_Status = 0; m_BytesPerSecond = 0; m_CountsPerByte = AiCountPerBytes(); // should be calculated ... see below, instead allow from user settings m_FramesPerSecond = 60; } DWORD CAudio::GetLength ( void ) { WriteTraceF(TraceAudio,__FUNCTION__ ": Start (m_SecondBuff = %d)",m_SecondBuff); DWORD TimeLeft = _SystemTimer->GetTimer(CSystemTimer::AiTimer), Res = 0; if (TimeLeft > 0) { Res = (TimeLeft / m_CountsPerByte) + m_SecondBuff; } WriteTraceF(TraceAudio,__FUNCTION__ ": Done (res = %d, TimeLeft = %d)",Res, TimeLeft); return Res; } DWORD CAudio::GetStatus ( void ) { WriteTraceF(TraceAudio,__FUNCTION__ ": m_Status = %X",m_Status); return m_Status; } void CAudio::LenChanged ( void ) { WriteTraceF(TraceAudio,__FUNCTION__ ": 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 >= 0x20000) { WriteTraceF(TraceAudio,__FUNCTION__ ": *** Ignoring Write, To Large (%X)",g_Reg->AI_LEN_REG); } else { m_Status |= 0x80000000; if (_SystemTimer->GetTimer(CSystemTimer::AiTimer) == 0) { if (m_SecondBuff) { g_Notify->BreakPoint(__FILE__,__LINE__); } WriteTraceF(TraceAudio,__FUNCTION__ ": Set Timer AI_LEN_REG: %d m_CountsPerByte: %d",g_Reg->AI_LEN_REG,m_CountsPerByte); _SystemTimer->SetTimer(CSystemTimer::AiTimer,g_Reg->AI_LEN_REG * m_CountsPerByte,false); } else { WriteTraceF(TraceAudio,__FUNCTION__ ": Increasing Second Buffer (m_SecondBuff %d Increase: %d)",m_SecondBuff,g_Reg->AI_LEN_REG); m_SecondBuff += g_Reg->AI_LEN_REG; } } } else { WriteTraceF(TraceAudio,__FUNCTION__ ": *** Reset Timer to 0"); _SystemTimer->StopTimer(CSystemTimer::AiTimer); m_SecondBuff = 0; m_Status = 0; } if (g_Plugins->Audio()->LenChanged != NULL) { g_Plugins->Audio()->LenChanged(); } WriteTraceF(TraceAudio,__FUNCTION__ ": Done"); } void CAudio::TimerDone ( void ) { WriteTraceF(TraceAudio,__FUNCTION__ ": Start (m_SecondBuff = %d)",m_SecondBuff); if (m_SecondBuff != 0) { _SystemTimer->SetTimer(CSystemTimer::AiTimer,m_SecondBuff * m_CountsPerByte,false); m_SecondBuff = 0; } else { g_Reg->MI_INTR_REG |= MI_INTR_AI; g_Reg->CheckInterrupts(); m_Status &= 0x7FFFFFFF; } WriteTraceF(TraceAudio,__FUNCTION__ ": Done",m_SecondBuff); } void CAudio::SetViIntr ( DWORD /*VI_INTR_TIME*/ ) { /* double CountsPerSecond = (DWORD)((double)VI_INTR_TIME * m_FramesPerSecond); if (m_BytesPerSecond != 0) { //m_CountsPerByte = (double)CountsPerSecond / (double)m_BytesPerSecond; } */ } void CAudio::SetFrequency (DWORD Dacrate, DWORD System) { WriteTraceF(TraceAudio,__FUNCTION__ "(Dacrate: %X System: %d): AI_BITRATE_REG = %X",Dacrate,System,g_Reg->AI_BITRATE_REG); DWORD 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; if (System == SYSTEM_PAL) { m_FramesPerSecond = 50; } else { m_FramesPerSecond = 60; } }