ADDED volume control to GB core [blargg]
CLEANUP gbSound.h [blargg] git-svn-id: https://svn.code.sf.net/p/vbam/code/trunk@658 a31d4220-a93d-0410-bf67-fe4944624d44
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@ -2,8 +2,9 @@
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// Copyright (C) 1999-2003 Forgotten
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// Copyright (C) 2004 Forgotten and the VBA development team
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// Copyright (C) 2004-2006 VBA development team
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// Copyright (C) 2007 Shay Green (blargg)
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// Copyright (C) 2007-2008 VBA-M development team
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// Copyright (C) 2007-2008 Shay Green (blargg)
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2, or(at your option)
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@ -18,7 +19,7 @@
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// along with this program; if not, write to the Free Software Foundation,
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// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#include <memory.h>
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#include <string.h>
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#include "Sound.h"
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@ -54,24 +55,22 @@
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extern bool stopState; // TODO: silence sound when true
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int soundQuality = 2;
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int soundInterpolation = 0;
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float soundFiltering = 1;
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static float soundFiltering_;
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float soundVolume = 1;
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static float soundVolume_ = -1;
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bool soundEcho = false;
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static int soundEnableFlag = 0x3ff; // emulator channels enabled
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int const SOUND_CLOCK_TICKS_ = 167772;
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int SOUND_CLOCK_TICKS = SOUND_CLOCK_TICKS_;
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int soundTicks = SOUND_CLOCK_TICKS_;
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int const SOUND_CLOCK_TICKS_ = 167772; // 1/100 second
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u16 soundFinalWave [1470];
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int soundBufferLen = sizeof soundFinalWave;
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int soundQuality = 2;
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int soundInterpolation = 0;
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bool soundPaused = true;
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float soundFiltering = 1;
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float soundVolume = 1;
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bool soundEcho = false;
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int SOUND_CLOCK_TICKS = SOUND_CLOCK_TICKS_;
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int soundTicks = SOUND_CLOCK_TICKS_;
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static int soundEnableFlag = 0x3ff; // emulator channels enabled
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static float soundFiltering_ = -1;
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static float soundVolume_ = -1;
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void interp_rate() { /* empty for now */ }
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23
src/Sound.h
23
src/Sound.h
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@ -1,20 +1,16 @@
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// GBA sound emulation
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// Sound emulation setup/options and GBA sound emulation
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#ifndef VBA_SOUND_H
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#define VBA_SOUND_H
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#include "System.h"
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//// Setup/options
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//// Setup/options (these affect GBA and GB sound)
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// Initializes sound and returns true if successful. Sets sound quality to
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// current value in soundQuality global.
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bool soundInit();
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// Sets sample rate to 44100 / quality
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void soundSetQuality( int quality );
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extern int soundQuality; // current sound quality
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// Manages sound volume, where 1.0 is normal
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void soundSetVolume( float );
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float soundGetVolume();
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@ -24,8 +20,8 @@ float soundGetVolume();
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// 0x002 Pulse 2
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// 0x004 Wave
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// 0x008 Noise
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// 0x100 GBA left
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// 0x200 GBA right
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// 0x100 PCM 1
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// 0x200 PCM 2
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void soundSetEnable( int mask );
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int soundGetEnable();
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@ -41,14 +37,21 @@ void soundShutdown();
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extern int soundBufferLen; // size of sound buffer in BYTES
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extern u16 soundFinalWave[1470];// 16-bit SIGNED stereo sample buffer
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//// GBA sound options
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// Sets sample rate to 44100 / quality
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void soundSetQuality( int quality );
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extern int soundQuality; // current sound quality
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// Sound settings
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extern int soundInterpolation; // 1 if PCM should have low-pass filtering
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extern float soundFiltering; // 0.0 = none, 1.0 = max (only if soundInterpolation is 1)
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//// Emulation
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//// GBA sound emulation
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// GBA register addresses
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// GBA sound registers
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#define SGCNT0_H 0x82
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#define FIFOA_L 0xa0
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#define FIFOA_H 0xa2
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@ -2,6 +2,8 @@
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// Copyright (C) 1999-2003 Forgotten
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// Copyright (C) 2005-2006 Forgotten and the VBA development team
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// Copyright (C) 2007-2008 VBA-M development team
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// Copyright (C) 2007-2008 Shay Green (blargg)
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2, or(at your option)
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@ -16,9 +18,9 @@
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// along with this program; if not, write to the Free Software Foundation,
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// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#include <memory.h>
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#include <string.h>
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#include "../System.h"
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#include "../Sound.h"
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#include "../Util.h"
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#include "gbGlobals.h"
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#include "gbSound.h"
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@ -26,23 +28,18 @@
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#include "gb_apu/Gb_Apu.h"
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#include "gb_apu/Effects_Buffer.h"
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extern int soundGetEnable();
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static Gb_Apu* gb_apu;
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static Simple_Effects_Buffer* stereo_buffer;
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extern u16 soundFinalWave[1470];
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extern int gbHardware;
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extern void soundResume();
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gb_effects_config_t gb_effects_config = { false, 0.20f, 0.15f, false };
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extern int soundBufferLen;
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extern int soundQuality;
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extern bool soundPaused;
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extern int soundTicks;
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extern int SOUND_CLOCK_TICKS;
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static gb_effects_config_t gb_effects_config_current;
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static Simple_Effects_Buffer* stereo_buffer;
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static Gb_Apu* gb_apu;
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static float soundVolume_ = -1;
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static int prevSoundEnable = -1;
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int const chan_count = 4;
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int const ticks_to_time = 2 * GB_APU_OVERCLOCK;
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static inline blip_time_t blip_time()
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@ -90,13 +87,6 @@ static void flush_samples()
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}
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}
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int const chan_count = 4;
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gb_effects_config_t gb_effects_config = { false, 0.2f, 0.15f, false };
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static gb_effects_config_t gb_effects_config_current;
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static int prevSoundEnable = -1;
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static void apply_effects()
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{
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prevSoundEnable = soundGetEnable();
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@ -122,6 +112,14 @@ void gbSoundConfigEffects( gb_effects_config_t const& c )
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gb_effects_config = c;
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}
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static void apply_volume()
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{
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soundVolume_ = soundGetVolume();
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if ( gb_apu )
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gb_apu->volume( soundVolume_ );
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}
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void gbSoundTick()
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{
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if ( gb_apu && stereo_buffer )
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@ -135,6 +133,9 @@ void gbSoundTick()
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if ( memcmp( &gb_effects_config_current, &gb_effects_config,
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sizeof gb_effects_config ) || soundGetEnable() != prevSoundEnable )
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apply_effects();
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if ( soundVolume_ != soundGetVolume() )
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apply_volume();
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}
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}
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@ -160,7 +161,7 @@ static void remake_stereo_buffer()
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stereo_buffer = 0;
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stereo_buffer = new Simple_Effects_Buffer; // TODO: handle out of memory
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stereo_buffer->set_sample_rate( 44100 / soundQuality ); // TODO: handle out of memory
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if ( stereo_buffer->set_sample_rate( 44100 / soundQuality ) ) { } // TODO: handle out of memory
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stereo_buffer->clock_rate( gb_apu->clock_rate );
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// APU
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@ -168,20 +169,21 @@ static void remake_stereo_buffer()
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Multi_Buffer::wave_type+1, Multi_Buffer::wave_type+2,
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Multi_Buffer::wave_type+3, Multi_Buffer::mixed_type+1
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};
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stereo_buffer->set_channel_count( chan_count, chan_types );
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if ( stereo_buffer->set_channel_count( chan_count, chan_types ) ) { } // TODO: handle errors
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if ( !gb_apu )
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{
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gb_apu = new Gb_Apu;
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gb_apu = new Gb_Apu; // TODO: handle errors
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reset_apu();
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}
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apply_effects();
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apply_volume();
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}
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void gbSoundReset()
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{
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SOUND_CLOCK_TICKS = 20000;
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SOUND_CLOCK_TICKS = 20000; // 1/100 second
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remake_stereo_buffer();
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reset_apu();
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@ -221,9 +223,6 @@ void gbSoundReset()
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}
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}
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extern bool soundInit();
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extern void soundShutdown();
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void gbSoundSetQuality(int quality)
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{
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if ( soundQuality != quality )
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// Load state
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utilReadData( gzFile, gbsound_format );
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if ( version >= 11 )
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if ( version >= 11 ) // TODO: never executed; remove?
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utilReadData( gzFile, gbsound_format2 );
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utilReadData( gzFile, gbsound_format3 );
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// -*- C++ -*-
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// VisualBoyAdvance - Nintendo Gameboy/GameboyAdvance (TM) emulator.
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// Copyright (C) 1999-2003 Forgotten
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// Copyright (C) 2004 Forgotten and the VBA development team
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// GB sound emulation
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2, or(at your option)
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// any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software Foundation,
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// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#ifndef VBA_GBSOUND_H
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#define VBA_GBSOUND_H
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// See Sound.h for sound setup/options
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//// GB sound options
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// Sets sample rate to 44100 / quality
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void gbSoundSetQuality( int quality );
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extern int soundQuality; // current sound quality
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// Effects configuration
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struct gb_effects_config_t
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{
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bool enabled; // false = disable all effects
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float echo; // 0.0 = none, 1.0 = lots
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float stereo; // 0.0 = channels in center, 1.0 = channels on left/right
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bool surround; // true = put some channels in back
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};
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// Changes effects configuration
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void gbSoundConfigEffects( gb_effects_config_t const& );
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extern gb_effects_config_t gb_effects_config; // current configuration
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//// GB sound emulation
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// GB sound registers
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#define NR10 0xff10
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#define NR11 0xff11
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#define NR12 0xff12
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#define NR51 0xff25
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#define NR52 0xff26
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#define SOUND_EVENT(address,value) \
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gbSoundEvent(address,value)
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// Resets emulated sound hardware
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void gbSoundReset();
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extern void gbSoundTick();
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extern void gbSoundPause();
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extern void gbSoundResume();
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extern void gbSoundEnable(int);
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extern void gbSoundDisable(int);
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extern int gbSoundGetEnable();
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extern void gbSoundReset();
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extern void gbSoundSaveGame(gzFile);
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extern void gbSoundReadGame(int,gzFile);
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extern void gbSoundEvent(register u16, register int);
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extern void gbSoundSetQuality(int);
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// Emulates write to sound hardware
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void gbSoundEvent( u16 address, int data );
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#define SOUND_EVENT gbSoundEvent
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extern u8 gbSoundRead(u16 address);
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// Emulates read from sound hardware
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u8 gbSoundRead( u16 address );
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extern int soundTicks;
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extern int soundQuality;
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extern int SOUND_CLOCK_TICKS;
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// Notifies emulator that SOUND_CLOCK_TICKS clocks have passed
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void gbSoundTick();
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extern int SOUND_CLOCK_TICKS; // Number of 16.8 MHz clocks between calls to gbSoundTick()
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extern int soundTicks; // Number of 16.8 MHz clocks until gbSoundTick() will be called
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struct gb_effects_config_t
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{
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bool enabled; // false = disable all effects
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// Saves/loads emulator state
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void gbSoundSaveGame( gzFile out );
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void gbSoundReadGame( int version, gzFile in );
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float echo; // 0.0 = none, 1.0 = lots
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float stereo; // 0.0 = channels in center, 1.0 = channels on left/right
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bool surround; // true = put some channels in back
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};
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// Changes effects configuration
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void gbSoundConfigEffects( gb_effects_config_t const& );
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extern gb_effects_config_t gb_effects_config; // current configuration
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#endif
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