int SndOpen()
{
unsigned int BufferSize;
unsigned int bufferStart;
BufferSize = (nBurnSoundLen * nAudioChannels * AUDIO_BLOCKS)*2+512;
EzxAudioBuffer= (unsigned short *)malloc(BufferSize);
AudioBufferSize = nBurnSoundLen * nAudioChannels * 2;
memset(EzxAudioBuffer,0,BufferSize);
EzxAudioBuffer[1]=(EzxAudioBuffer[0]=(nBurnSoundLen * nAudioChannels * 2));
EzxAudioBuffer[2]=(1000000000/nBurnSoundRate)&0xFFFF;
EzxAudioBuffer[3]=(1000000000/nBurnSoundRate)>>16;
bufferStart = (unsigned int)&EzxAudioBuffer[4];
pOutput[0] = (short*)bufferStart;
pOutput[1] = (short*)(bufferStart+1*EzxAudioBuffer[1]);
pOutput[2] = (short*)(bufferStart+2*EzxAudioBuffer[1]);
pOutput[3] = (short*)(bufferStart+3*EzxAudioBuffer[1]);
pOutput[4] = (short*)(bufferStart+4*EzxAudioBuffer[1]);
pOutput[5] = (short*)(bufferStart+5*EzxAudioBuffer[1]);
pOutput[6] = (short*)(bufferStart+6*EzxAudioBuffer[1]);
pOutput[7] = (short*)(bufferStart+7*EzxAudioBuffer[1]);
if ( !GameMute )
{
int frag = 10 + config_options.option_samplerate;
frag |= 2 << 16;
if (config_options.option_sound_enable==1)
{
dspfd = ezx_open_dsp ( nBurnSoundRate, nAudioChannels, AUDIO_FORMAT, frag );
if (dspfd >= 0)
{
pthread_create(&soundthread_p, NULL, &soundthread_f, NULL);
return 0;
}
}
if (config_options.option_sound_enable==2)
{
for(int i=0;i<NUM_BUFS;i++) buffer[i]=(unsigned char *) malloc(BUFFSIZE);
SAMPLESIZE=512; //lowest value accepted by audio driver
dspfd=configure(nBurnSoundRate,nAudioChannels,AUDIO_S16);
}
// printf("SOUND: Init done (%d)\n", dspfd);
if (((dspfd > 0) && (config_options.option_sound_enable==2)) || ((dspfd>=0) && (config_options.option_sound_enable==1)))
{
if (config_options.option_sound_enable==2) pBurnSoundOut = (short*)pOutput[0];
if (config_options.option_sound_enable==2) audio_resume();
return 0;
}
else
{
nBurnSoundRate = 0;
nBurnSoundLen = 0;
}
}
sampletime=EZX_GetTicks();
return -1;
}
void run_fba_emulator(const char *fn)
{
char build_version[] = "Finalburn Alpha Plus for Pi ("__DATE__")";
// process rom path and name
char romname[MAX_PATH];
if (BurnCacheInit(fn, romname))
goto finish;
if(config_options.option_showfps)
bShowFPS=true;
BurnLibInit();
// find rom by name
for (nBurnDrvSelect=0; nBurnDrvSelect<nBurnDrvCount; nBurnDrvSelect++)
if ( strcasecmp(romname, BurnDrvGetTextA(DRV_NAME)) == 0 )
break;
if (nBurnDrvSelect >= nBurnDrvCount) {
// unsupport rom ...
nBurnDrvSelect = ~0U;
logoutput ("rom not supported!\n");
printf ("rom not supported!\n");
goto finish;
}
logoutput("Attempt to initialise '%s'\n", BurnDrvGetTextA(DRV_FULLNAME));
memset (titlefb, 0, 320*240*2);
DrawString (build_version, (uint16*)&titlefb, 10, 20, 320);
DrawString ("Based on FinalBurnAlpha", (uint16*)&titlefb, 10, 35, 320);
DrawString ("Now loading ... ", (uint16 *)&titlefb, 10, 105, 320);
show_rom_loading_text("Open Zip", 0, 0);
memcpy (VideoBuffer, titlefb, 320*240*2);
pi_video_flip();
InpInit();
InpDIP();
VideoInit();
if (DrvInit(nBurnDrvSelect, false) != 0) {
logoutput ("Driver initialisation failed! Likely causes are:\n- Corrupt/Missing ROM(s)\n- I/O Error\n- Memory error\n\n");
printf ("Driver initialisation failed! Likely causes are:\n- Corrupt/Missing ROM(s)\n- I/O Error\n- Memory error\n\n");
goto finish;
}
RunReset();
frame_count = 0;
GameLooping = true;
EZX_StartTicks();
logoutput ("Lets go!\n");
logflush();
if (config_options.option_sound_enable)
{
int timer = 0, tick=0, i=0, fps = 0;
bool bRenderFrame;
if (SndOpen() == 0)
{
while (GameLooping)
{
if (bShowFPS)
{
timer = EZX_GetTicks();
if(timer-tick>1000000)
{
fps = nFramesRendered;
nFramesRendered = 0;
tick = timer;
}
}
//We need to render more audio:
bRenderFrame=true; // Render last frame
RunOneFrame(bRenderFrame,fps);
update_audio_stream(pBurnSoundOut);
pi_process_events();
}
}
}
else
{
int now, done=0, timer = 0, ticks=0, tick=0, i=0, fps = 0;
unsigned int frame_limit = nBurnFPS/100, frametime = 100000000/nBurnFPS;
while (GameLooping)
{
timer = EZX_GetTicks()/frametime;;
if(timer-tick>frame_limit && bShowFPS)
{
fps = nFramesRendered;
nFramesRendered = 0;
tick = timer;
}
now = timer;
ticks=now-done;
if(ticks<1) continue;
if(ticks>10) ticks=10;
for (i=0; i<ticks-1; i++)
{
RunOneFrame(false,fps);
}
if(ticks>=1)
{
RunOneFrame(true,fps);
}
done = now;
}
}
logoutput ("Finished emulating\n");
finish:
logoutput("---- Shutdown Finalburn Alpha plus ----\n\n");
DrvExit();
BurnLibExit();
if (config_options.option_sound_enable)
SndExit();
VideoExit();
InpExit();
BurnCacheExit();
}