rlm@1: // VisualBoyAdvance - Nintendo Gameboy/GameboyAdvance (TM) emulator.
rlm@1: // Copyright (C) 1999-2003 Forgotten
rlm@1: // Copyright (C) 2004 Forgotten and the VBA development team
rlm@1: 
rlm@1: // This program is free software; you can redistribute it and/or modify
rlm@1: // it under the terms of the GNU General Public License as published by
rlm@1: // the Free Software Foundation; either version 2, or(at your option)
rlm@1: // any later version.
rlm@1: //
rlm@1: // This program is distributed in the hope that it will be useful,
rlm@1: // but WITHOUT ANY WARRANTY; without even the implied warranty of
rlm@1: // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
rlm@1: // GNU General Public License for more details.
rlm@1: //
rlm@1: // You should have received a copy of the GNU General Public License
rlm@1: // along with this program; if not, write to the Free Software Foundation,
rlm@1: // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
rlm@1: 
rlm@1: #include <stdio.h>
rlm@1: #include <stdarg.h>
rlm@1: #include <string.h>
rlm@1: 
rlm@1: #include <SDL.h>
rlm@1: #include <SDL_thread.h>
rlm@1: 
rlm@1: #include "../common/System.h"
rlm@1: #include "../common/Util.h"
rlm@1: #include "../gba/GBAGlobals.h"
rlm@1: #include "../gb/gbGlobals.h"
rlm@1: #include "../gba/GBASound.h"
rlm@1: 
rlm@1: #include "window.h"
rlm@1: #include "intl.h"
rlm@1: 
rlm@1: // Required vars, used by the emulator core
rlm@1: //
rlm@1: int  systemRedShift;
rlm@1: int  systemGreenShift;
rlm@1: int  systemBlueShift;
rlm@1: int  systemColorDepth;
rlm@1: int  systemDebug;
rlm@1: int  systemVerbose;
rlm@1: int  systemSaveUpdateCounter;
rlm@1: int  systemFrameSkip;
rlm@1: u32  systemColorMap32[0x10000];
rlm@1: u16  systemColorMap16[0x10000];
rlm@1: u16  systemGbPalette[24];
rlm@1: bool systemSoundOn;
rlm@1: 
rlm@1: char filename[2048];
rlm@1: char biosFileName[2048];
rlm@1: //char captureDir[2048];
rlm@1: char saveDir[2048];
rlm@1: char batteryDir[2048];
rlm@1: 
rlm@1: int sensorX = 2047;
rlm@1: int sensorY = 2047;
rlm@1: bool sensorOn = false;
rlm@1: 
rlm@1: int  emulating;
rlm@1: bool debugger;
rlm@1: int  RGB_LOW_BITS_MASK;
rlm@1: 
rlm@1: int cartridgeType = 3;
rlm@1: int sizeOption = 0;
rlm@1: int captureFormat = 0;
rlm@1: int throttle = 0;
rlm@1: bool paused = false;
rlm@1: bool removeIntros = false;
rlm@1: int sdlFlashSize = 0;
rlm@1: int sdlRtcEnable = 0;
rlm@1: 
rlm@1: int sdlDefaultJoypad = 0;
rlm@1: 
rlm@1: SDL_Joystick **sdlDevices = NULL;
rlm@1: 
rlm@1: u16 motion[4] = {
rlm@1:   SDLK_KP4, SDLK_KP6, SDLK_KP8, SDLK_KP2
rlm@1: };
rlm@1: 
rlm@1: struct EmulatedSystem emulator = {
rlm@1:   NULL,
rlm@1:   NULL,
rlm@1:   NULL,
rlm@1:   NULL,
rlm@1:   NULL,
rlm@1:   NULL,
rlm@1:   NULL,
rlm@1:   NULL,
rlm@1:   NULL,
rlm@1:   NULL,
rlm@1:   NULL,
rlm@1:   NULL,
rlm@1:   false,
rlm@1:   0
rlm@1: };
rlm@1: 
rlm@1: // Extra vars, only used for the GUI
rlm@1: //
rlm@1: int systemRenderedFrames;
rlm@1: int systemFPS;
rlm@1: 
rlm@1: // Sound stuff
rlm@1: //
rlm@1: const  int         iSoundSamples  = 2048;
rlm@1: const  int         iSoundTotalLen = iSoundSamples * 4;
rlm@1: static u8          auiSoundBuffer[iSoundTotalLen];
rlm@1: static int         iSoundLen;
rlm@1: static SDL_cond *  pstSoundCond;
rlm@1: static SDL_mutex * pstSoundMutex;
rlm@1: 
rlm@1: inline VBA::Window * GUI()
rlm@1: {
rlm@1:   return VBA::Window::poGetInstance();
rlm@1: }
rlm@1: 
rlm@1: void systemMessage(int _iId, const char * _csFormat, ...)
rlm@1: {
rlm@1:   va_list args;
rlm@1:   va_start(args, _csFormat);
rlm@1: 
rlm@1:   GUI()->vPopupErrorV(_(_csFormat), args);
rlm@1: 
rlm@1:   va_end(args);
rlm@1: }
rlm@1: 
rlm@1: void systemDrawScreen()
rlm@1: {
rlm@1:   GUI()->vDrawScreen();
rlm@1:   systemRenderedFrames++;
rlm@1: }
rlm@1: 
rlm@1: bool systemReadJoypads()
rlm@1: {
rlm@1:   return true;
rlm@1: }
rlm@1: 
rlm@1: u32 systemReadJoypad(int,bool)
rlm@1: {
rlm@1:   return GUI()->uiReadJoypad();
rlm@1: }
rlm@1: 
rlm@1: void systemShowSpeed(int _iSpeed)
rlm@1: {
rlm@1:   systemFPS = systemRenderedFrames;
rlm@1:   systemRenderedFrames = 0;
rlm@1: 
rlm@1:   GUI()->vShowSpeed(_iSpeed);
rlm@1: }
rlm@1: 
rlm@1: void system10Frames(int _iRate)
rlm@1: {
rlm@1:   GUI()->vComputeFrameskip(_iRate);
rlm@1: }
rlm@1: 
rlm@1: void systemFrame(int)
rlm@1: {
rlm@1: }
rlm@1: 
rlm@1: void systemSetTitle(const char * _csTitle)
rlm@1: {
rlm@1:   GUI()->set_title(_csTitle);
rlm@1: }
rlm@1: 
rlm@1: int systemScreenCapture(int _iNum)
rlm@1: {
rlm@1:   GUI()->vCaptureScreen(_iNum);
rlm@1: }
rlm@1: 
rlm@1: void systemSoundWriteToBuffer()
rlm@1: {
rlm@1:   if (SDL_GetAudioStatus() != SDL_AUDIO_PLAYING)
rlm@1:   {
rlm@1:     SDL_PauseAudio(0);
rlm@1:   }
rlm@1: 
rlm@1:   bool bWait = true;
rlm@1:   while (bWait && ! speedup && GUI()->iGetThrottle() == 0)
rlm@1:   {
rlm@1:     SDL_mutexP(pstSoundMutex);
rlm@1:     if (iSoundLen < iSoundTotalLen)
rlm@1:     {
rlm@1:       bWait = false;
rlm@1:     }
rlm@1:     SDL_mutexV(pstSoundMutex);
rlm@1:   }
rlm@1: 
rlm@1:   int iLen = soundBufferLen;
rlm@1:   int iCopied = 0;
rlm@1:   if (iSoundLen + iLen >= iSoundTotalLen)
rlm@1:   {
rlm@1:     iCopied = iSoundTotalLen - iSoundLen;
rlm@1:     memcpy(&auiSoundBuffer[iSoundLen], soundFinalWave, iCopied);
rlm@1: 
rlm@1:     iSoundLen = iSoundTotalLen;
rlm@1:     SDL_CondSignal(pstSoundCond);
rlm@1: 
rlm@1:     bWait = true;
rlm@1:     if (! speedup && GUI()->iGetThrottle() == 0)
rlm@1:     {
rlm@1:       while(bWait)
rlm@1:       {
rlm@1:         SDL_mutexP(pstSoundMutex);
rlm@1:         if (iSoundLen < iSoundTotalLen)
rlm@1:         {
rlm@1:           bWait = false;
rlm@1:         }
rlm@1:         SDL_mutexV(pstSoundMutex);
rlm@1:       }
rlm@1: 
rlm@1:       memcpy(auiSoundBuffer, ((u8 *)soundFinalWave) + iCopied,
rlm@1:              soundBufferLen - iCopied);
rlm@1: 
rlm@1:       iSoundLen = soundBufferLen - iCopied;
rlm@1:     }
rlm@1:     else
rlm@1:     {
rlm@1:       memcpy(auiSoundBuffer, ((u8 *)soundFinalWave) + iCopied,
rlm@1:              soundBufferLen);
rlm@1:     }
rlm@1:   }
rlm@1:   else
rlm@1:   {
rlm@1:     memcpy(&auiSoundBuffer[iSoundLen], soundFinalWave, soundBufferLen);
rlm@1:     iSoundLen += soundBufferLen;
rlm@1:   }
rlm@1: }
rlm@1: 
rlm@1: static void vSoundCallback(void * _pvUserData, u8 * _puiStream, int _iLen)
rlm@1: {
rlm@1:   if (! emulating)
rlm@1:   {
rlm@1:     return;
rlm@1:   }
rlm@1: 
rlm@1:   SDL_mutexP(pstSoundMutex);
rlm@1:   if (! speedup && GUI()->iGetThrottle() == 0)
rlm@1:   {
rlm@1:     while (iSoundLen < iSoundTotalLen && emulating)
rlm@1:     {
rlm@1:       SDL_CondWait(pstSoundCond, pstSoundMutex);
rlm@1:     }
rlm@1:   }
rlm@1:   if (emulating)
rlm@1:   {
rlm@1:     memcpy(_puiStream, auiSoundBuffer, _iLen);
rlm@1:   }
rlm@1:   iSoundLen = 0;
rlm@1:   SDL_mutexV(pstSoundMutex);
rlm@1: }
rlm@1: 
rlm@1: bool systemSoundInit()
rlm@1: {
rlm@1:   SDL_AudioSpec stAudio;
rlm@1: 
rlm@1:   switch (soundQuality)
rlm@1:   {
rlm@1:   case 1:
rlm@1:     stAudio.freq = 44100;
rlm@1:     soundBufferLen = 1470 * 2;
rlm@1:     break;
rlm@1:   case 2:
rlm@1:     stAudio.freq = 22050;
rlm@1:     soundBufferLen = 736 * 2;
rlm@1:     break;
rlm@1:   case 4:
rlm@1:     stAudio.freq = 11025;
rlm@1:     soundBufferLen = 368 * 2;
rlm@1:     break;
rlm@1:   }
rlm@1: 
rlm@1:   stAudio.format   = AUDIO_S16SYS;
rlm@1:   stAudio.channels = 2;
rlm@1:   stAudio.samples  = iSoundSamples;
rlm@1:   stAudio.callback = vSoundCallback;
rlm@1:   stAudio.userdata = NULL;
rlm@1: 
rlm@1:   if (SDL_OpenAudio(&stAudio, NULL) < 0)
rlm@1:   {
rlm@1:     fprintf(stderr, "Failed to open audio: %s\n", SDL_GetError());
rlm@1:     return false;
rlm@1:   }
rlm@1: 
rlm@1:   pstSoundCond  = SDL_CreateCond();
rlm@1:   pstSoundMutex = SDL_CreateMutex();
rlm@1: 
rlm@1:   soundBufferTotalLen = soundBufferLen * 10;
rlm@1:   iSoundLen = 0;
rlm@1:   systemSoundOn = true;
rlm@1: 
rlm@1:   return true;
rlm@1: }
rlm@1: 
rlm@1: void systemSoundShutdown()
rlm@1: {
rlm@1:   SDL_mutexP(pstSoundMutex);
rlm@1:   int iSave = emulating;
rlm@1:   emulating = 0;
rlm@1:   SDL_CondSignal(pstSoundCond);
rlm@1:   SDL_mutexV(pstSoundMutex);
rlm@1: 
rlm@1:   SDL_DestroyCond(pstSoundCond);
rlm@1:   pstSoundCond = NULL;
rlm@1: 
rlm@1:   SDL_DestroyMutex(pstSoundMutex);
rlm@1:   pstSoundMutex = NULL;
rlm@1: 
rlm@1:   SDL_CloseAudio();
rlm@1: 
rlm@1:   emulating = iSave;
rlm@1:   systemSoundOn = false;
rlm@1: }
rlm@1: 
rlm@1: void systemSoundPause()
rlm@1: {
rlm@1:   SDL_PauseAudio(1);
rlm@1: }
rlm@1: 
rlm@1: void systemSoundResume()
rlm@1: {
rlm@1:   SDL_PauseAudio(0);
rlm@1: }
rlm@1: 
rlm@1: void systemSoundReset()
rlm@1: {
rlm@1: }
rlm@1: 
rlm@1: u32 systemGetClock()
rlm@1: {
rlm@1:   return SDL_GetTicks();
rlm@1: }
rlm@1: 
rlm@1: void systemUpdateMotionSensor()
rlm@1: {
rlm@1: }
rlm@1: 
rlm@1: int systemGetSensorX()
rlm@1: {
rlm@1:   return 0;
rlm@1: }
rlm@1: 
rlm@1: int systemGetSensorY()
rlm@1: {
rlm@1:   return 0;
rlm@1: }
rlm@1: 
rlm@1: void systemGbPrint(u8 * _puiData,
rlm@1:                    int  _iPages,
rlm@1:                    int  _iFeed,
rlm@1:                    int  _iPalette,
rlm@1:                    int  _iContrast)
rlm@1: {
rlm@1: }
rlm@1: 
rlm@1: void systemScreenMessage(const char * _csMsg, int slot, int duration, const char *colorList)
rlm@1: {
rlm@1: }
rlm@1: 
rlm@1: bool systemCanChangeSoundQuality()
rlm@1: {
rlm@1:   return true;
rlm@1: }
rlm@1: 
rlm@1: bool systemPauseOnFrame()
rlm@1: {
rlm@1:   return false;
rlm@1: }
rlm@1: 
rlm@1: void systemGbBorderOn()
rlm@1: {
rlm@1: }
rlm@1: 
rlm@1: void debuggerMain()
rlm@1: {
rlm@1: }
rlm@1: 
rlm@1: void debuggerSignal(int, int)
rlm@1: {
rlm@1: }
rlm@1: 
rlm@1: void debuggerOutput(char *, u32)
rlm@1: {
rlm@1: }
rlm@1: 
rlm@1: char *sdlGetFilename(char *name)
rlm@1: {
rlm@1:   static char filebuffer[2048];
rlm@1: 
rlm@1:   int len = strlen(name);
rlm@1:   
rlm@1:   char *p = name + len - 1;
rlm@1:   
rlm@1:   while(true) {
rlm@1:     if(*p == '/' ||
rlm@1:        *p == '\\') {
rlm@1:       p++;
rlm@1:       break;
rlm@1:     }
rlm@1:     len--;
rlm@1:     p--;
rlm@1:     if(len == 0)
rlm@1:       break;
rlm@1:   }
rlm@1:   
rlm@1:   if(len == 0)
rlm@1:     strcpy(filebuffer, name);
rlm@1:   else
rlm@1:     strcpy(filebuffer, p);
rlm@1:   return filebuffer;
rlm@1: }
rlm@1: 
rlm@1: bool sdlCheckJoyKey(int key)
rlm@1: {
rlm@1:   int dev = (key >> 12) - 1;
rlm@1:   int what = key & 0xfff;
rlm@1: 
rlm@1:   if(what >= 128) {
rlm@1:     // joystick button
rlm@1:     int button = what - 128;
rlm@1: 
rlm@1:     if(button >= SDL_JoystickNumButtons(sdlDevices[dev]))
rlm@1:       return false;
rlm@1:   } else if (what < 0x20) {
rlm@1:     // joystick axis    
rlm@1:     what >>= 1;
rlm@1:     if(what >= SDL_JoystickNumAxes(sdlDevices[dev]))
rlm@1:       return false;
rlm@1:   } else if (what < 0x30) {
rlm@1:     // joystick hat
rlm@1:     what = (what & 15);
rlm@1:     what >>= 2;
rlm@1:     if(what >= SDL_JoystickNumHats(sdlDevices[dev]))
rlm@1:       return false;
rlm@1:   }
rlm@1: 
rlm@1:   // no problem found
rlm@1:   return true;
rlm@1: }
rlm@1: 
rlm@1: u16 checksumBIOS()
rlm@1: {
rlm@1: 	bool hasBIOS = false;
rlm@1: 	u8 * tempBIOS;
rlm@1: 	if(useBios)
rlm@1: 	{
rlm@1: 		tempBIOS = (u8 *)malloc(0x4000);
rlm@1: 		int size = 0x4000;
rlm@1: 		if(utilLoad(biosFileName,
rlm@1: 					utilIsGBABios,
rlm@1: 					tempBIOS,
rlm@1: 					size)) {
rlm@1: 		if(size == 0x4000)
rlm@1: 			hasBIOS = true;
rlm@1: 		}
rlm@1: 	}
rlm@1: 
rlm@1: 	u16 biosCheck = 0;
rlm@1: 	if(hasBIOS) {
rlm@1: 		for(int i = 0; i < 0x4000; i += 4)
rlm@1: 			biosCheck += *((u32 *)&tempBIOS[i]);
rlm@1: 		free(tempBIOS);
rlm@1: 	}
rlm@1: 
rlm@1: 	return biosCheck;
rlm@1: }
rlm@1: 
rlm@1: void (*dbgMain)() = debuggerMain;
rlm@1: void (*dbgSignal)(int, int) = debuggerSignal;
rlm@1: void (*dbgOutput)(char *, u32) = debuggerOutput;