mirror of
https://github.com/dborth/vbagx.git
synced 2024-11-25 20:16:53 +01:00
eabe325fb0
optimizations from dancinninjac, GB color palettes, rotation/tilt for WarioWare Twisted, in-game rumble)
817 lines
18 KiB
C++
817 lines
18 KiB
C++
#include <string.h>
|
|
|
|
#include "Sound.h"
|
|
|
|
#include "GBA.h"
|
|
#include "Globals.h"
|
|
#include "../Util.h"
|
|
#include "../common/Port.h"
|
|
|
|
#include "../apu/Gb_Apu.h"
|
|
#include "../apu/Multi_Buffer.h"
|
|
|
|
#include "../common/SoundDriver.h"
|
|
|
|
#define NR10 0x60
|
|
#define NR11 0x62
|
|
#define NR12 0x63
|
|
#define NR13 0x64
|
|
#define NR14 0x65
|
|
#define NR21 0x68
|
|
#define NR22 0x69
|
|
#define NR23 0x6c
|
|
#define NR24 0x6d
|
|
#define NR30 0x70
|
|
#define NR31 0x72
|
|
#define NR32 0x73
|
|
#define NR33 0x74
|
|
#define NR34 0x75
|
|
#define NR41 0x78
|
|
#define NR42 0x79
|
|
#define NR43 0x7c
|
|
#define NR44 0x7d
|
|
#define NR50 0x80
|
|
#define NR51 0x81
|
|
#define NR52 0x84
|
|
|
|
SoundDriver * soundDriver = 0;
|
|
|
|
extern bool stopState; // TODO: silence sound when true
|
|
|
|
int const SOUND_CLOCK_TICKS_ = 167772; // 1/100 second
|
|
|
|
static u16 soundFinalWave [1600];
|
|
long soundSampleRate = 44100;
|
|
bool soundInterpolation = true;
|
|
bool soundPaused = true;
|
|
float soundFiltering = 0.5f;
|
|
int SOUND_CLOCK_TICKS = SOUND_CLOCK_TICKS_;
|
|
int soundTicks = SOUND_CLOCK_TICKS_;
|
|
|
|
static float soundVolume = 1.0f;
|
|
static int soundEnableFlag = 0x3ff; // emulator channels enabled
|
|
static float soundFiltering_ = -1.0f;
|
|
static float soundVolume_ = -1.0f;
|
|
|
|
void interp_rate() { /* empty for now */ }
|
|
|
|
class Gba_Pcm {
|
|
public:
|
|
void init();
|
|
void apply_control( int idx );
|
|
void update( int dac );
|
|
void end_frame( blip_time_t );
|
|
|
|
private:
|
|
Blip_Buffer* output;
|
|
blip_time_t last_time;
|
|
int last_amp;
|
|
int shift;
|
|
};
|
|
|
|
class Gba_Pcm_Fifo {
|
|
public:
|
|
int which;
|
|
Gba_Pcm pcm;
|
|
|
|
void write_control( int data );
|
|
void write_fifo( int data );
|
|
void timer_overflowed( int which_timer );
|
|
|
|
// public only so save state routines can access it
|
|
int readIndex;
|
|
int count;
|
|
int writeIndex;
|
|
int dac;
|
|
u8 fifo [32];
|
|
private:
|
|
|
|
int timer;
|
|
bool enabled;
|
|
};
|
|
|
|
static Gba_Pcm_Fifo pcm [2];
|
|
static Gb_Apu* gb_apu;
|
|
static Stereo_Buffer* stereo_buffer;
|
|
|
|
static Blip_Synth<blip_best_quality,1> pcm_synth [3]; // 32 kHz, 16 kHz, 8 kHz
|
|
|
|
static inline blip_time_t blip_time()
|
|
{
|
|
return SOUND_CLOCK_TICKS - soundTicks;
|
|
}
|
|
|
|
void Gba_Pcm::init()
|
|
{
|
|
output = 0;
|
|
last_time = 0;
|
|
last_amp = 0;
|
|
shift = 0;
|
|
}
|
|
|
|
void Gba_Pcm::apply_control( int idx )
|
|
{
|
|
shift = ~ioMem [SGCNT0_H] >> (2 + idx) & 1;
|
|
|
|
int ch = 0;
|
|
if ( (soundEnableFlag >> idx & 0x100) && (ioMem [NR52] & 0x80) )
|
|
ch = ioMem [SGCNT0_H+1] >> (idx <<2) & 3;
|
|
|
|
Blip_Buffer* out = 0;
|
|
switch ( ch )
|
|
{
|
|
case 1: out = stereo_buffer->right(); break;
|
|
case 2: out = stereo_buffer->left(); break;
|
|
case 3: out = stereo_buffer->center(); break;
|
|
}
|
|
|
|
if ( output != out )
|
|
{
|
|
if ( output )
|
|
{
|
|
output->set_modified();
|
|
pcm_synth [0].offset( blip_time(), -last_amp, output );
|
|
}
|
|
last_amp = 0;
|
|
output = out;
|
|
}
|
|
}
|
|
|
|
void Gba_Pcm::end_frame( blip_time_t time )
|
|
{
|
|
last_time -= time;
|
|
if ( last_time < -2048 )
|
|
last_time = -2048;
|
|
|
|
if ( output )
|
|
output->set_modified();
|
|
}
|
|
|
|
void Gba_Pcm::update( int dac )
|
|
{
|
|
if ( output )
|
|
{
|
|
blip_time_t time = blip_time();
|
|
|
|
dac = (s8) dac >> shift;
|
|
int delta = dac - last_amp;
|
|
if ( delta )
|
|
{
|
|
last_amp = dac;
|
|
|
|
int filter = 0;
|
|
if ( soundInterpolation )
|
|
{
|
|
unsigned period = unsigned(time - last_time);
|
|
unsigned idx = period >> 9;
|
|
|
|
if ( idx > 3 )
|
|
idx = 3;
|
|
|
|
static int const filters [4] = { 0, 0, 1, 2 };
|
|
filter = filters [idx];
|
|
}
|
|
|
|
pcm_synth [filter].offset( time, delta, output );
|
|
}
|
|
last_time = time;
|
|
}
|
|
}
|
|
|
|
void Gba_Pcm_Fifo::timer_overflowed( int which_timer )
|
|
{
|
|
if ( which_timer == timer && enabled )
|
|
{
|
|
/* Mother 3 fix, refined to not break Metroid Fusion */
|
|
if ( count == 16 || count == 0 )
|
|
{
|
|
// Need to fill FIFO
|
|
int saved_count = count;
|
|
CPUCheckDMA( 3, which ? 4 : 2 );
|
|
if ( saved_count == 0 && count == 16 )
|
|
CPUCheckDMA( 3, which ? 4 : 2 );
|
|
if ( count == 0 )
|
|
{
|
|
// Not filled by DMA, so fill with 16 bytes of silence
|
|
int reg = which ? FIFOB_L : FIFOA_L;
|
|
for ( int n = 8; n--; )
|
|
{
|
|
soundEvent(reg , (u16)0);
|
|
soundEvent(reg+2, (u16)0);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Read next sample from FIFO
|
|
--count;
|
|
dac = fifo [readIndex];
|
|
readIndex = (readIndex + 1) & 31;
|
|
pcm.update( dac );
|
|
}
|
|
}
|
|
|
|
void Gba_Pcm_Fifo::write_control( int data )
|
|
{
|
|
enabled = (data & 0x0300) ? true : false;
|
|
timer = (data & 0x0400) ? 1 : 0;
|
|
|
|
if ( data & 0x0800 )
|
|
{
|
|
// Reset
|
|
writeIndex = 0;
|
|
readIndex = 0;
|
|
count = 0;
|
|
dac = 0;
|
|
memset( fifo, 0, sizeof fifo );
|
|
}
|
|
|
|
pcm.apply_control( which );
|
|
pcm.update( dac );
|
|
}
|
|
|
|
void Gba_Pcm_Fifo::write_fifo( int data )
|
|
{
|
|
fifo [writeIndex ] = data & 0xFF;
|
|
fifo [writeIndex+1] = data >> 8;
|
|
count += 2;
|
|
writeIndex = (writeIndex + 2) & 31;
|
|
}
|
|
|
|
static void apply_control()
|
|
{
|
|
pcm [0].pcm.apply_control( 0 );
|
|
pcm [1].pcm.apply_control( 1 );
|
|
}
|
|
|
|
static int gba_to_gb_sound( int addr )
|
|
{
|
|
static const int table [0x40] =
|
|
{
|
|
0xFF10, 0,0xFF11,0xFF12,0xFF13,0xFF14, 0, 0,
|
|
0xFF16,0xFF17, 0, 0,0xFF18,0xFF19, 0, 0,
|
|
0xFF1A, 0,0xFF1B,0xFF1C,0xFF1D,0xFF1E, 0, 0,
|
|
0xFF20,0xFF21, 0, 0,0xFF22,0xFF23, 0, 0,
|
|
0xFF24,0xFF25, 0, 0,0xFF26, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0xFF30,0xFF31,0xFF32,0xFF33,0xFF34,0xFF35,0xFF36,0xFF37,
|
|
0xFF38,0xFF39,0xFF3A,0xFF3B,0xFF3C,0xFF3D,0xFF3E,0xFF3F,
|
|
};
|
|
if ( addr >= 0x60 && addr < 0xA0 )
|
|
return table [addr - 0x60];
|
|
return 0;
|
|
}
|
|
|
|
void soundEvent(u32 address, u8 data)
|
|
{
|
|
int gb_addr = gba_to_gb_sound( address );
|
|
if ( gb_addr )
|
|
{
|
|
ioMem[address] = data;
|
|
gb_apu->write_register( blip_time(), gb_addr, data );
|
|
|
|
if ( address == NR52 )
|
|
apply_control();
|
|
}
|
|
|
|
// TODO: what about byte writes to SGCNT0_H etc.?
|
|
}
|
|
|
|
static void apply_volume( bool apu_only = false )
|
|
{
|
|
if ( !apu_only )
|
|
soundVolume_ = soundVolume;
|
|
|
|
if ( gb_apu )
|
|
{
|
|
static float const apu_vols [4] = { 0.25f, 0.5f, 1.0f, 0.25f };
|
|
gb_apu->volume( soundVolume_ * apu_vols [ioMem [SGCNT0_H] & 3] );
|
|
}
|
|
|
|
if ( !apu_only )
|
|
{
|
|
double tmpVol = 0.002578125 * soundVolume_; // 0.66 / 256 * soundVolume_
|
|
|
|
pcm_synth[0].volume( tmpVol );
|
|
pcm_synth[1].volume( tmpVol );
|
|
pcm_synth[2].volume( tmpVol );
|
|
}
|
|
}
|
|
|
|
static void write_SGCNT0_H( int data )
|
|
{
|
|
WRITE16LE( &ioMem [SGCNT0_H], data & 0x770F );
|
|
pcm [0].write_control( data );
|
|
pcm [1].write_control( data >> 4 );
|
|
apply_volume( true );
|
|
}
|
|
|
|
void soundEvent(u32 address, u16 data)
|
|
{
|
|
switch ( address )
|
|
{
|
|
case SGCNT0_H:
|
|
write_SGCNT0_H( data );
|
|
break;
|
|
|
|
case FIFOA_L:
|
|
case FIFOA_H:
|
|
pcm [0].write_fifo( data );
|
|
WRITE16LE( &ioMem[address], data );
|
|
break;
|
|
|
|
case FIFOB_L:
|
|
case FIFOB_H:
|
|
pcm [1].write_fifo( data );
|
|
WRITE16LE( &ioMem[address], data );
|
|
break;
|
|
|
|
case 0x88:
|
|
data &= 0xC3FF;
|
|
WRITE16LE( &ioMem[address], data );
|
|
break;
|
|
|
|
default:
|
|
soundEvent( address & ~1, (u8) (data ) ); // even
|
|
soundEvent( address | 1, (u8) (data >> 8) ); // odd
|
|
break;
|
|
}
|
|
}
|
|
|
|
void soundTimerOverflow(int timer)
|
|
{
|
|
pcm [0].timer_overflowed( timer );
|
|
pcm [1].timer_overflowed( timer );
|
|
}
|
|
|
|
static void end_frame( blip_time_t time )
|
|
{
|
|
pcm [0].pcm.end_frame( time );
|
|
pcm [1].pcm.end_frame( time );
|
|
|
|
gb_apu ->end_frame( time );
|
|
stereo_buffer->end_frame( time );
|
|
}
|
|
|
|
void flush_samples(Multi_Buffer * buffer)
|
|
{
|
|
// We want to write the data frame by frame to support legacy audio drivers
|
|
// that don't use the length parameter of the write method.
|
|
// TODO: Update the Win32 audio drivers (DS, OAL, XA2), and flush all the
|
|
// samples at once to help reducing the audio delay on all platforms.
|
|
int soundBufferLen = ( soundSampleRate / 60 ) << 2;
|
|
|
|
// soundBufferLen should have a whole number of sample pairs
|
|
assert( soundBufferLen % ((sizeof *soundFinalWave)<<1) == 0 );
|
|
|
|
// number of samples in output buffer
|
|
int const out_buf_size = soundBufferLen / sizeof *soundFinalWave;
|
|
|
|
// Keep filling and writing soundFinalWave until it can't be fully filled
|
|
while ( buffer->samples_avail() >= out_buf_size )
|
|
{
|
|
buffer->read_samples( (blip_sample_t*) soundFinalWave, out_buf_size );
|
|
if(soundPaused)
|
|
soundResume();
|
|
|
|
soundDriver->write(soundFinalWave, soundBufferLen);
|
|
systemOnWriteDataToSoundBuffer(soundFinalWave, soundBufferLen);
|
|
}
|
|
}
|
|
|
|
static void apply_filtering()
|
|
{
|
|
soundFiltering_ = soundFiltering;
|
|
|
|
// Yes, I changed soundFiltering_ to soundFiltering, the reason is
|
|
// to eliminate a write-read dependency
|
|
int const base_freq = 32768 - (int) (soundFiltering * 16384.0f);
|
|
int const nyquist = stereo_buffer->sample_rate() >> 1;
|
|
|
|
for ( int i = 0; i < 3; i++ )
|
|
{
|
|
int cutoff = base_freq >> i;
|
|
if ( cutoff > nyquist )
|
|
cutoff = nyquist;
|
|
pcm_synth [i].treble_eq( blip_eq_t( 0, 0, stereo_buffer->sample_rate(), cutoff ) );
|
|
}
|
|
}
|
|
|
|
void psoundTickfn()
|
|
{
|
|
if ( gb_apu && stereo_buffer )
|
|
{
|
|
// Run sound hardware to present
|
|
end_frame( SOUND_CLOCK_TICKS );
|
|
|
|
flush_samples(stereo_buffer);
|
|
|
|
if ( soundFiltering_ != soundFiltering )
|
|
apply_filtering();
|
|
|
|
if ( soundVolume_ != soundVolume )
|
|
apply_volume();
|
|
}
|
|
}
|
|
|
|
static void apply_muting()
|
|
{
|
|
if ( !stereo_buffer || !ioMem )
|
|
return;
|
|
|
|
// PCM
|
|
apply_control();
|
|
|
|
if ( gb_apu )
|
|
{
|
|
// APU
|
|
for ( int i = 0; i < 4; i++ )
|
|
{
|
|
if ( soundEnableFlag >> i & 1 )
|
|
gb_apu->set_output( stereo_buffer->center(),
|
|
stereo_buffer->left(), stereo_buffer->right(), i );
|
|
else
|
|
gb_apu->set_output( 0, 0, 0, i );
|
|
}
|
|
}
|
|
}
|
|
|
|
static void reset_apu()
|
|
{
|
|
gb_apu->reset( gb_apu->mode_agb, true );
|
|
|
|
if ( stereo_buffer )
|
|
stereo_buffer->clear();
|
|
|
|
soundTicks = SOUND_CLOCK_TICKS;
|
|
}
|
|
|
|
static void remake_stereo_buffer()
|
|
{
|
|
if ( !ioMem )
|
|
return;
|
|
|
|
// Clears pointers kept to old stereo_buffer
|
|
pcm [0].pcm.init();
|
|
pcm [1].pcm.init();
|
|
|
|
// Stereo_Buffer
|
|
delete stereo_buffer;
|
|
stereo_buffer = 0;
|
|
|
|
stereo_buffer = new Stereo_Buffer; // TODO: handle out of memory
|
|
stereo_buffer->set_sample_rate( soundSampleRate ); // TODO: handle out of memory
|
|
stereo_buffer->clock_rate( gb_apu->clock_rate );
|
|
|
|
// PCM
|
|
pcm [0].which = 0;
|
|
pcm [1].which = 1;
|
|
apply_filtering();
|
|
|
|
// APU
|
|
if ( !gb_apu )
|
|
{
|
|
gb_apu = new Gb_Apu; // TODO: handle out of memory
|
|
reset_apu();
|
|
}
|
|
|
|
apply_muting();
|
|
apply_volume();
|
|
}
|
|
|
|
void soundShutdown()
|
|
{
|
|
if (soundDriver)
|
|
{
|
|
delete soundDriver;
|
|
soundDriver = 0;
|
|
}
|
|
|
|
systemOnSoundShutdown();
|
|
}
|
|
|
|
void soundPause()
|
|
{
|
|
soundPaused = true;
|
|
if (soundDriver)
|
|
soundDriver->pause();
|
|
}
|
|
|
|
void soundResume()
|
|
{
|
|
soundPaused = false;
|
|
if (soundDriver)
|
|
soundDriver->resume();
|
|
}
|
|
|
|
void soundSetVolume( float volume )
|
|
{
|
|
soundVolume = volume;
|
|
}
|
|
|
|
float soundGetVolume()
|
|
{
|
|
return soundVolume;
|
|
}
|
|
|
|
void soundSetEnable(int channels)
|
|
{
|
|
soundEnableFlag = channels;
|
|
apply_muting();
|
|
}
|
|
|
|
int soundGetEnable()
|
|
{
|
|
return (soundEnableFlag & 0x30f);
|
|
}
|
|
|
|
void soundReset()
|
|
{
|
|
soundDriver->reset();
|
|
|
|
remake_stereo_buffer();
|
|
reset_apu();
|
|
|
|
soundPaused = true;
|
|
SOUND_CLOCK_TICKS = SOUND_CLOCK_TICKS_;
|
|
soundTicks = SOUND_CLOCK_TICKS_;
|
|
|
|
soundEvent( NR52, (u8) 0x80 );
|
|
}
|
|
|
|
bool soundInit()
|
|
{
|
|
soundDriver = systemSoundInit();
|
|
if ( !soundDriver )
|
|
return false;
|
|
|
|
if (!soundDriver->init(soundSampleRate))
|
|
return false;
|
|
|
|
soundPaused = true;
|
|
return true;
|
|
}
|
|
|
|
void soundSetThrottle(unsigned short throttle)
|
|
{
|
|
if(!soundDriver)
|
|
return;
|
|
soundDriver->setThrottle(throttle);
|
|
}
|
|
|
|
long soundGetSampleRate()
|
|
{
|
|
return soundSampleRate;
|
|
}
|
|
|
|
void soundSetSampleRate(long sampleRate)
|
|
{
|
|
if ( soundSampleRate != sampleRate )
|
|
{
|
|
if ( systemCanChangeSoundQuality() )
|
|
{
|
|
soundShutdown();
|
|
soundSampleRate = sampleRate;
|
|
soundInit();
|
|
}
|
|
else
|
|
{
|
|
soundSampleRate = sampleRate;
|
|
}
|
|
|
|
remake_stereo_buffer();
|
|
}
|
|
}
|
|
|
|
static int dummy_state [16];
|
|
|
|
#define SKIP( type, name ) { dummy_state, sizeof (type) }
|
|
|
|
#define LOAD( type, name ) { &name, sizeof (type) }
|
|
|
|
static struct {
|
|
gb_apu_state_t apu;
|
|
|
|
// old state
|
|
int soundDSBValue;
|
|
u8 soundDSAValue;
|
|
} state;
|
|
|
|
// Old GBA sound state format
|
|
static variable_desc old_gba_state [] =
|
|
{
|
|
SKIP( int, soundPaused ),
|
|
SKIP( int, soundPlay ),
|
|
SKIP( int, soundTicks ),
|
|
SKIP( int, SOUND_CLOCK_TICKS ),
|
|
SKIP( int, soundLevel1 ),
|
|
SKIP( int, soundLevel2 ),
|
|
SKIP( int, soundBalance ),
|
|
SKIP( int, soundMasterOn ),
|
|
SKIP( int, soundIndex ),
|
|
SKIP( int, sound1On ),
|
|
SKIP( int, sound1ATL ),
|
|
SKIP( int, sound1Skip ),
|
|
SKIP( int, sound1Index ),
|
|
SKIP( int, sound1Continue ),
|
|
SKIP( int, sound1EnvelopeVolume ),
|
|
SKIP( int, sound1EnvelopeATL ),
|
|
SKIP( int, sound1EnvelopeATLReload ),
|
|
SKIP( int, sound1EnvelopeUpDown ),
|
|
SKIP( int, sound1SweepATL ),
|
|
SKIP( int, sound1SweepATLReload ),
|
|
SKIP( int, sound1SweepSteps ),
|
|
SKIP( int, sound1SweepUpDown ),
|
|
SKIP( int, sound1SweepStep ),
|
|
SKIP( int, sound2On ),
|
|
SKIP( int, sound2ATL ),
|
|
SKIP( int, sound2Skip ),
|
|
SKIP( int, sound2Index ),
|
|
SKIP( int, sound2Continue ),
|
|
SKIP( int, sound2EnvelopeVolume ),
|
|
SKIP( int, sound2EnvelopeATL ),
|
|
SKIP( int, sound2EnvelopeATLReload ),
|
|
SKIP( int, sound2EnvelopeUpDown ),
|
|
SKIP( int, sound3On ),
|
|
SKIP( int, sound3ATL ),
|
|
SKIP( int, sound3Skip ),
|
|
SKIP( int, sound3Index ),
|
|
SKIP( int, sound3Continue ),
|
|
SKIP( int, sound3OutputLevel ),
|
|
SKIP( int, sound4On ),
|
|
SKIP( int, sound4ATL ),
|
|
SKIP( int, sound4Skip ),
|
|
SKIP( int, sound4Index ),
|
|
SKIP( int, sound4Clock ),
|
|
SKIP( int, sound4ShiftRight ),
|
|
SKIP( int, sound4ShiftSkip ),
|
|
SKIP( int, sound4ShiftIndex ),
|
|
SKIP( int, sound4NSteps ),
|
|
SKIP( int, sound4CountDown ),
|
|
SKIP( int, sound4Continue ),
|
|
SKIP( int, sound4EnvelopeVolume ),
|
|
SKIP( int, sound4EnvelopeATL ),
|
|
SKIP( int, sound4EnvelopeATLReload ),
|
|
SKIP( int, sound4EnvelopeUpDown ),
|
|
LOAD( int, soundEnableFlag ),
|
|
SKIP( int, soundControl ),
|
|
LOAD( int, pcm [0].readIndex ),
|
|
LOAD( int, pcm [0].count ),
|
|
LOAD( int, pcm [0].writeIndex ),
|
|
SKIP( u8, soundDSAEnabled ), // was bool, which was one byte on MS compiler
|
|
SKIP( int, soundDSATimer ),
|
|
LOAD( u8 [32], pcm [0].fifo ),
|
|
LOAD( u8, state.soundDSAValue ),
|
|
LOAD( int, pcm [1].readIndex ),
|
|
LOAD( int, pcm [1].count ),
|
|
LOAD( int, pcm [1].writeIndex ),
|
|
SKIP( int, soundDSBEnabled ),
|
|
SKIP( int, soundDSBTimer ),
|
|
LOAD( u8 [32], pcm [1].fifo ),
|
|
LOAD( int, state.soundDSBValue ),
|
|
|
|
// skipped manually
|
|
//LOAD( int, soundBuffer[0][0], 6*735 },
|
|
//LOAD( int, soundFinalWave[0], 2*735 },
|
|
{ NULL, 0 }
|
|
};
|
|
|
|
variable_desc old_gba_state2 [] =
|
|
{
|
|
LOAD( u8 [0x20], state.apu.regs [0x20] ),
|
|
SKIP( int, sound3Bank ),
|
|
SKIP( int, sound3DataSize ),
|
|
SKIP( int, sound3ForcedOutput ),
|
|
{ NULL, 0 }
|
|
};
|
|
|
|
// New state format
|
|
static variable_desc gba_state [] =
|
|
{
|
|
// PCM
|
|
LOAD( int, pcm [0].readIndex ),
|
|
LOAD( int, pcm [0].count ),
|
|
LOAD( int, pcm [0].writeIndex ),
|
|
LOAD(u8[32],pcm[0].fifo ),
|
|
LOAD( int, pcm [0].dac ),
|
|
|
|
SKIP( int [4], room_for_expansion ),
|
|
|
|
LOAD( int, pcm [1].readIndex ),
|
|
LOAD( int, pcm [1].count ),
|
|
LOAD( int, pcm [1].writeIndex ),
|
|
LOAD(u8[32],pcm[1].fifo ),
|
|
LOAD( int, pcm [1].dac ),
|
|
|
|
SKIP( int [4], room_for_expansion ),
|
|
|
|
// APU
|
|
LOAD( u8 [0x40], state.apu.regs ), // last values written to registers and wave RAM (both banks)
|
|
LOAD( int, state.apu.frame_time ), // clocks until next frame sequencer action
|
|
LOAD( int, state.apu.frame_phase ), // next step frame sequencer will run
|
|
|
|
LOAD( int, state.apu.sweep_freq ), // sweep's internal frequency register
|
|
LOAD( int, state.apu.sweep_delay ), // clocks until next sweep action
|
|
LOAD( int, state.apu.sweep_enabled ),
|
|
LOAD( int, state.apu.sweep_neg ), // obscure internal flag
|
|
LOAD( int, state.apu.noise_divider ),
|
|
LOAD( int, state.apu.wave_buf ), // last read byte of wave RAM
|
|
|
|
LOAD( int [4], state.apu.delay ), // clocks until next channel action
|
|
LOAD( int [4], state.apu.length_ctr ),
|
|
LOAD( int [4], state.apu.phase ), // square/wave phase, noise LFSR
|
|
LOAD( int [4], state.apu.enabled ), // internal enabled flag
|
|
|
|
LOAD( int [3], state.apu.env_delay ), // clocks until next envelope action
|
|
LOAD( int [3], state.apu.env_volume ),
|
|
LOAD( int [3], state.apu.env_enabled ),
|
|
|
|
SKIP( int [13], room_for_expansion ),
|
|
|
|
// Emulator
|
|
LOAD( int, soundEnableFlag ),
|
|
|
|
SKIP( int [15], room_for_expansion ),
|
|
|
|
{ NULL, 0 }
|
|
};
|
|
|
|
// Reads and discards count bytes from in
|
|
static void skip_read( gzFile in, int count )
|
|
{
|
|
char buf [512];
|
|
|
|
while ( count )
|
|
{
|
|
int n = sizeof buf;
|
|
if ( n > count )
|
|
n = count;
|
|
|
|
count -= n;
|
|
utilGzRead( in, buf, n );
|
|
}
|
|
}
|
|
|
|
void soundSaveGame( gzFile out )
|
|
{
|
|
gb_apu->save_state( &state.apu );
|
|
|
|
// Be sure areas for expansion get written as zero
|
|
memset( dummy_state, 0, sizeof dummy_state );
|
|
|
|
utilWriteData( out, gba_state );
|
|
}
|
|
|
|
static void soundReadGameOld( gzFile in, int version )
|
|
{
|
|
// Read main data
|
|
utilReadData( in, old_gba_state );
|
|
skip_read( in, 6*735 + 2*735 );
|
|
|
|
// Copy APU regs
|
|
static int const regs_to_copy [] = {
|
|
NR10, NR11, NR12, NR13, NR14,
|
|
NR21, NR22, NR23, NR24,
|
|
NR30, NR31, NR32, NR33, NR34,
|
|
NR41, NR42, NR43, NR44,
|
|
NR50, NR51, NR52, -1
|
|
};
|
|
|
|
ioMem [NR52] |= 0x80; // old sound played even when this wasn't set (power on)
|
|
|
|
for ( int i = 0; regs_to_copy [i] >= 0; i++ )
|
|
state.apu.regs [gba_to_gb_sound( regs_to_copy [i] ) - 0xFF10] = ioMem [regs_to_copy [i]];
|
|
|
|
// Copy wave RAM to both banks
|
|
memcpy( &state.apu.regs [0x20], &ioMem [0x90], 0x10 );
|
|
memcpy( &state.apu.regs [0x30], &ioMem [0x90], 0x10 );
|
|
|
|
// Read both banks of wave RAM if available
|
|
if ( version >= SAVE_GAME_VERSION_3 )
|
|
utilReadData( in, old_gba_state2 );
|
|
|
|
// Restore PCM
|
|
pcm [0].dac = state.soundDSAValue;
|
|
pcm [1].dac = state.soundDSBValue;
|
|
|
|
(void) utilReadInt( in ); // ignore quality
|
|
}
|
|
|
|
#include <stdio.h>
|
|
|
|
void soundReadGame( gzFile in, int version )
|
|
{
|
|
// Prepare APU and default state
|
|
reset_apu();
|
|
gb_apu->save_state( &state.apu );
|
|
|
|
if ( version > SAVE_GAME_VERSION_9 )
|
|
utilReadData( in, gba_state );
|
|
else
|
|
soundReadGameOld( in, version );
|
|
|
|
gb_apu->load_state( state.apu );
|
|
write_SGCNT0_H( READ16LE( &ioMem [SGCNT0_H] ) & 0x770F );
|
|
|
|
apply_muting();
|
|
}
|