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add new APU
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dborth
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source/snes9x/apu/SNES_SPC.cpp
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564
source/snes9x/apu/SNES_SPC.cpp
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@ -0,0 +1,564 @@
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// Core SPC emulation: CPU, timers, SMP registers, memory
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// snes_spc 0.9.0. http://www.slack.net/~ant/
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#include "SNES_SPC.h"
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#include <string.h>
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/* Copyright (C) 2004-2007 Shay Green. This module is free software; you
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can redistribute it and/or modify it under the terms of the GNU Lesser
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General Public License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version. This
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module is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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details. You should have received a copy of the GNU Lesser General Public
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License along with this module; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
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#include "blargg_source.h"
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#define RAM (m.ram.ram)
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#define REGS (m.smp_regs [0])
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#define REGS_IN (m.smp_regs [1])
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// (n ? n : 256)
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#define IF_0_THEN_256( n ) ((uint8_t) ((n) - 1) + 1)
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// Note: SPC_MORE_ACCURACY exists mainly so I can run my validation tests, which
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// do crazy echo buffer accesses.
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#ifndef SPC_MORE_ACCURACY
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#define SPC_MORE_ACCURACY 0
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#endif
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#ifdef BLARGG_ENABLE_OPTIMIZER
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#include BLARGG_ENABLE_OPTIMIZER
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#endif
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//// Timers
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#if SPC_DISABLE_TEMPO
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#define TIMER_DIV( t, n ) ((n) >> t->prescaler)
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#define TIMER_MUL( t, n ) ((n) << t->prescaler)
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#else
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#define TIMER_DIV( t, n ) ((n) / t->prescaler)
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#define TIMER_MUL( t, n ) ((n) * t->prescaler)
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#endif
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SNES_SPC::Timer* SNES_SPC::run_timer_( Timer* t, rel_time_t time )
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{
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int elapsed = TIMER_DIV( t, time - t->next_time ) + 1;
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t->next_time += TIMER_MUL( t, elapsed );
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if ( t->enabled )
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{
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int remain = IF_0_THEN_256( t->period - t->divider );
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int divider = t->divider + elapsed;
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int over = elapsed - remain;
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if ( over >= 0 )
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{
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int n = over / t->period;
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t->counter = (t->counter + 1 + n) & 0x0F;
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divider = over - n * t->period;
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}
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t->divider = (uint8_t) divider;
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}
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return t;
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}
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inline SNES_SPC::Timer* SNES_SPC::run_timer( Timer* t, rel_time_t time )
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{
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if ( time >= t->next_time )
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t = run_timer_( t, time );
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return t;
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}
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//// ROM
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void SNES_SPC::enable_rom( int enable )
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{
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if ( m.rom_enabled != enable )
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{
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m.rom_enabled = enable;
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if ( enable )
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memcpy( m.hi_ram, &RAM [rom_addr], sizeof m.hi_ram );
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memcpy( &RAM [rom_addr], (enable ? m.rom : m.hi_ram), rom_size );
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// TODO: ROM can still get overwritten when DSP writes to echo buffer
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}
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}
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//// DSP
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#if SPC_LESS_ACCURATE
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int const max_reg_time = 29;
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signed char const SNES_SPC::reg_times_ [256] =
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{
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-1, 0,-11,-10,-15,-11, -2, -2, 4, 3, 14, 14, 26, 26, 14, 22,
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2, 3, 0, 1,-12, 0, 1, 1, 7, 6, 14, 14, 27, 14, 14, 23,
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5, 6, 3, 4, -1, 3, 4, 4, 10, 9, 14, 14, 26, -5, 14, 23,
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8, 9, 6, 7, 2, 6, 7, 7, 13, 12, 14, 14, 27, -4, 14, 24,
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11, 12, 9, 10, 5, 9, 10, 10, 16, 15, 14, 14, -2, -4, 14, 24,
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14, 15, 12, 13, 8, 12, 13, 13, 19, 18, 14, 14, -2,-36, 14, 24,
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17, 18, 15, 16, 11, 15, 16, 16, 22, 21, 14, 14, 28, -3, 14, 25,
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20, 21, 18, 19, 14, 18, 19, 19, 25, 24, 14, 14, 14, 29, 14, 25,
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29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
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29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
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29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
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29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
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29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
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29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
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29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
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29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
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};
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#define RUN_DSP( time, offset ) \
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int count = (time) - (offset) - m.dsp_time;\
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if ( count >= 0 )\
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{\
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int clock_count = (count & ~(clocks_per_sample - 1)) + clocks_per_sample;\
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m.dsp_time += clock_count;\
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dsp.run( clock_count );\
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}
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#else
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#define RUN_DSP( time, offset ) \
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{\
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int count = (time) - m.dsp_time;\
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if ( !SPC_MORE_ACCURACY || count )\
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{\
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assert( count > 0 );\
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m.dsp_time = (time);\
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dsp.run( count );\
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}\
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}
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#endif
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int SNES_SPC::dsp_read( rel_time_t time )
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{
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RUN_DSP( time, reg_times [REGS [r_dspaddr] & 0x7F] );
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int result = dsp.read( REGS [r_dspaddr] & 0x7F );
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#ifdef SPC_DSP_READ_HOOK
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SPC_DSP_READ_HOOK( spc_time + time, (REGS [r_dspaddr] & 0x7F), result );
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#endif
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return result;
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}
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inline void SNES_SPC::dsp_write( int data, rel_time_t time )
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{
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RUN_DSP( time, reg_times [REGS [r_dspaddr]] )
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#if SPC_LESS_ACCURATE
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else if ( m.dsp_time == skipping_time )
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{
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int r = REGS [r_dspaddr];
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if ( r == SPC_DSP::r_kon )
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m.skipped_kon |= data & ~dsp.read( SPC_DSP::r_koff );
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if ( r == SPC_DSP::r_koff )
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{
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m.skipped_koff |= data;
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m.skipped_kon &= ~data;
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}
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}
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#endif
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#ifdef SPC_DSP_WRITE_HOOK
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SPC_DSP_WRITE_HOOK( m.spc_time + time, REGS [r_dspaddr], (uint8_t) data );
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#endif
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if ( REGS [r_dspaddr] <= 0x7F )
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dsp.write( REGS [r_dspaddr], data );
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else if ( !SPC_MORE_ACCURACY )
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dprintf( "SPC wrote to DSP register > $7F\n" );
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}
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//// Memory access extras
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#if SPC_MORE_ACCURACY
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#define MEM_ACCESS( time, addr ) \
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{\
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if ( time >= m.dsp_time )\
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{\
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RUN_DSP( time, max_reg_time );\
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}\
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}
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#elif !defined (NDEBUG)
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// Debug-only check for read/write within echo buffer, since this might result in
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// inaccurate emulation due to the DSP not being caught up to the present.
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bool SNES_SPC::check_echo_access( int addr )
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{
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if ( !(dsp.read( SPC_DSP::r_flg ) & 0x20) )
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{
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int start = 0x100 * dsp.read( SPC_DSP::r_esa );
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int size = 0x800 * (dsp.read( SPC_DSP::r_edl ) & 0x0F);
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int end = start + (size ? size : 4);
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if ( start <= addr && addr < end )
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{
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if ( !m.echo_accessed )
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{
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m.echo_accessed = 1;
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return true;
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}
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}
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}
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return false;
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}
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#define MEM_ACCESS( time, addr ) check( !check_echo_access( (uint16_t) addr ) );
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#else
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#define MEM_ACCESS( time, addr )
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#endif
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//// CPU write
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#if SPC_MORE_ACCURACY
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static unsigned char const glitch_probs [3] [256] =
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{
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0xC3,0x92,0x5B,0x1C,0xD1,0x92,0x5B,0x1C,0xDB,0x9C,0x72,0x18,0xCD,0x5C,0x38,0x0B,
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0xE1,0x9C,0x74,0x17,0xCF,0x75,0x45,0x0C,0xCF,0x6E,0x4A,0x0D,0xA3,0x3A,0x1D,0x08,
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0xDB,0xA0,0x82,0x19,0xD9,0x73,0x3C,0x0E,0xCB,0x76,0x52,0x0B,0xA5,0x46,0x1D,0x09,
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0xDA,0x74,0x55,0x0F,0xA2,0x3F,0x21,0x05,0x9A,0x40,0x20,0x07,0x63,0x1E,0x10,0x01,
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0xDF,0xA9,0x85,0x1D,0xD3,0x84,0x4B,0x0E,0xCF,0x6F,0x49,0x0F,0xB3,0x48,0x1E,0x05,
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0xD8,0x77,0x52,0x12,0xB7,0x49,0x23,0x06,0xAA,0x45,0x28,0x07,0x7D,0x28,0x0F,0x07,
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0xCC,0x7B,0x4A,0x0E,0xB2,0x4F,0x24,0x07,0xAD,0x43,0x2C,0x06,0x86,0x29,0x11,0x07,
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0xAE,0x48,0x1F,0x0A,0x76,0x21,0x19,0x05,0x76,0x21,0x14,0x05,0x44,0x11,0x0B,0x01,
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0xE7,0xAD,0x96,0x23,0xDC,0x86,0x59,0x0E,0xDC,0x7C,0x5F,0x15,0xBB,0x53,0x2E,0x09,
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0xD6,0x7C,0x4A,0x16,0xBB,0x4A,0x25,0x08,0xB3,0x4F,0x28,0x0B,0x8E,0x23,0x15,0x08,
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0xCF,0x7F,0x57,0x11,0xB5,0x4A,0x23,0x0A,0xAA,0x42,0x28,0x05,0x7D,0x22,0x12,0x03,
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0xA6,0x49,0x28,0x09,0x82,0x2B,0x0D,0x04,0x7A,0x20,0x0F,0x04,0x3D,0x0F,0x09,0x03,
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0xD1,0x7C,0x4C,0x0F,0xAF,0x4E,0x21,0x09,0xA8,0x46,0x2A,0x07,0x85,0x1F,0x0E,0x07,
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0xA6,0x3F,0x26,0x07,0x7C,0x24,0x14,0x07,0x78,0x22,0x16,0x04,0x46,0x12,0x0A,0x02,
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0xA6,0x41,0x2C,0x0A,0x7E,0x28,0x11,0x05,0x73,0x1B,0x14,0x05,0x3D,0x11,0x0A,0x02,
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0x70,0x22,0x17,0x05,0x48,0x13,0x08,0x03,0x3C,0x07,0x0D,0x07,0x26,0x07,0x06,0x01,
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0xE0,0x9F,0xDA,0x7C,0x4F,0x18,0x28,0x0D,0xE9,0x9F,0xDA,0x7C,0x4F,0x18,0x1F,0x07,
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0xE6,0x97,0xD8,0x72,0x64,0x13,0x26,0x09,0xDC,0x67,0xA9,0x38,0x21,0x07,0x15,0x06,
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0xE9,0x91,0xD2,0x6B,0x63,0x14,0x2B,0x0E,0xD6,0x61,0xB7,0x41,0x2B,0x0E,0x10,0x09,
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0xCF,0x59,0xB0,0x2F,0x35,0x08,0x0F,0x07,0xB6,0x30,0x7A,0x21,0x17,0x07,0x09,0x03,
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0xE7,0xA3,0xE5,0x6B,0x65,0x1F,0x34,0x09,0xD8,0x6B,0xBE,0x45,0x27,0x07,0x10,0x07,
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0xDA,0x54,0xB1,0x39,0x2E,0x0E,0x17,0x08,0xA9,0x3C,0x86,0x22,0x16,0x06,0x07,0x03,
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0xD4,0x51,0xBC,0x3D,0x38,0x0A,0x13,0x06,0xB2,0x37,0x79,0x1C,0x17,0x05,0x0E,0x06,
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0xA7,0x31,0x74,0x1C,0x11,0x06,0x0C,0x02,0x6D,0x1A,0x38,0x10,0x0B,0x05,0x06,0x03,
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0xEB,0x9A,0xE1,0x7A,0x6F,0x13,0x34,0x0E,0xE6,0x75,0xC5,0x45,0x3E,0x0B,0x1A,0x05,
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0xD8,0x63,0xC1,0x40,0x3C,0x1B,0x19,0x06,0xB3,0x42,0x83,0x29,0x18,0x0A,0x08,0x04,
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0xD4,0x58,0xBA,0x43,0x3F,0x0A,0x1F,0x09,0xB1,0x33,0x8A,0x1F,0x1F,0x06,0x0D,0x05,
|
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0xAF,0x3C,0x7A,0x1F,0x16,0x08,0x0A,0x01,0x72,0x1B,0x52,0x0D,0x0B,0x09,0x06,0x01,
|
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0xCF,0x63,0xB7,0x47,0x40,0x10,0x14,0x06,0xC0,0x41,0x96,0x20,0x1C,0x09,0x10,0x05,
|
||||
0xA6,0x35,0x82,0x1A,0x20,0x0C,0x0E,0x04,0x80,0x1F,0x53,0x0F,0x0B,0x02,0x06,0x01,
|
||||
0xA6,0x31,0x81,0x1B,0x1D,0x01,0x08,0x08,0x7B,0x20,0x4D,0x19,0x0E,0x05,0x07,0x03,
|
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0x6B,0x17,0x49,0x07,0x0E,0x03,0x0A,0x05,0x37,0x0B,0x1F,0x06,0x04,0x02,0x07,0x01,
|
||||
|
||||
0xF0,0xD6,0xED,0xAD,0xEC,0xB1,0xEB,0x79,0xAC,0x22,0x47,0x1E,0x6E,0x1B,0x32,0x0A,
|
||||
0xF0,0xD6,0xEA,0xA4,0xED,0xC4,0xDE,0x82,0x98,0x1F,0x50,0x13,0x52,0x15,0x2A,0x0A,
|
||||
0xF1,0xD1,0xEB,0xA2,0xEB,0xB7,0xD8,0x69,0xA2,0x1F,0x5B,0x18,0x55,0x18,0x2C,0x0A,
|
||||
0xED,0xB5,0xDE,0x7E,0xE6,0x85,0xD3,0x59,0x59,0x0F,0x2C,0x09,0x24,0x07,0x15,0x09,
|
||||
0xF1,0xD6,0xEA,0xA0,0xEC,0xBB,0xDA,0x77,0xA9,0x23,0x58,0x14,0x5D,0x12,0x2F,0x09,
|
||||
0xF1,0xC1,0xE3,0x86,0xE4,0x87,0xD2,0x4E,0x68,0x15,0x26,0x0B,0x27,0x09,0x15,0x02,
|
||||
0xEE,0xA6,0xE0,0x5C,0xE0,0x77,0xC3,0x41,0x67,0x1B,0x3C,0x07,0x2A,0x06,0x19,0x07,
|
||||
0xE4,0x75,0xC6,0x43,0xCC,0x50,0x95,0x23,0x35,0x09,0x14,0x04,0x15,0x05,0x0B,0x04,
|
||||
0xEE,0xD6,0xED,0xAD,0xEC,0xB1,0xEB,0x79,0xAC,0x22,0x56,0x14,0x5A,0x12,0x26,0x0A,
|
||||
0xEE,0xBB,0xE7,0x7E,0xE9,0x8D,0xCB,0x49,0x67,0x11,0x34,0x07,0x2B,0x0B,0x14,0x07,
|
||||
0xED,0xA7,0xE5,0x76,0xE3,0x7E,0xC4,0x4B,0x77,0x14,0x34,0x08,0x27,0x07,0x14,0x04,
|
||||
0xE7,0x8B,0xD2,0x4C,0xCA,0x56,0x9E,0x31,0x36,0x0C,0x11,0x07,0x14,0x04,0x0A,0x02,
|
||||
0xF0,0x9B,0xEA,0x6F,0xE5,0x81,0xC4,0x43,0x74,0x10,0x30,0x0B,0x2D,0x08,0x1B,0x06,
|
||||
0xE6,0x83,0xCA,0x48,0xD9,0x56,0xA7,0x23,0x3B,0x09,0x12,0x09,0x15,0x07,0x0A,0x03,
|
||||
0xE5,0x5F,0xCB,0x3C,0xCF,0x48,0x91,0x22,0x31,0x0A,0x17,0x08,0x15,0x04,0x0D,0x02,
|
||||
0xD1,0x43,0x91,0x20,0xA9,0x2D,0x54,0x12,0x17,0x07,0x09,0x02,0x0C,0x04,0x05,0x03,
|
||||
};
|
||||
#endif
|
||||
|
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// divided into multiple functions to keep rarely-used functionality separate
|
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// so often-used functionality can be optimized better by compiler
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|
||||
// If write isn't preceded by read, data has this added to it
|
||||
int const no_read_before_write = 0x2000;
|
||||
|
||||
void SNES_SPC::cpu_write_smp_reg_( int data, rel_time_t time, int addr )
|
||||
{
|
||||
switch ( addr )
|
||||
{
|
||||
case r_t0target:
|
||||
case r_t1target:
|
||||
case r_t2target: {
|
||||
Timer* t = &m.timers [addr - r_t0target];
|
||||
int period = IF_0_THEN_256( data );
|
||||
if ( t->period != period )
|
||||
{
|
||||
t = run_timer( t, time );
|
||||
#if SPC_MORE_ACCURACY
|
||||
// Insane behavior when target is written just after counter is
|
||||
// clocked and counter matches new period and new period isn't 1, 2, 4, or 8
|
||||
if ( t->divider == (period & 0xFF) &&
|
||||
t->next_time == time + TIMER_MUL( t, 1 ) &&
|
||||
((period - 1) | ~0x0F) & period )
|
||||
{
|
||||
//dprintf( "SPC pathological timer target write\n" );
|
||||
|
||||
// If the period is 3, 5, or 9, there's a probability this behavior won't occur,
|
||||
// based on the previous period
|
||||
int prob = 0xFF;
|
||||
int old_period = t->period & 0xFF;
|
||||
if ( period == 3 ) prob = glitch_probs [0] [old_period];
|
||||
if ( period == 5 ) prob = glitch_probs [1] [old_period];
|
||||
if ( period == 9 ) prob = glitch_probs [2] [old_period];
|
||||
|
||||
// The glitch suppresses incrementing of one of the counter bits, based on
|
||||
// the lowest set bit in the new period
|
||||
int b = 1;
|
||||
while ( !(period & b) )
|
||||
b <<= 1;
|
||||
|
||||
if ( (rand() >> 4 & 0xFF) <= prob )
|
||||
t->divider = (t->divider - b) & 0xFF;
|
||||
}
|
||||
#endif
|
||||
t->period = period;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
case r_t0out:
|
||||
case r_t1out:
|
||||
case r_t2out:
|
||||
if ( !SPC_MORE_ACCURACY )
|
||||
dprintf( "SPC wrote to counter %d\n", (int) addr - r_t0out );
|
||||
|
||||
if ( data < no_read_before_write / 2 )
|
||||
run_timer( &m.timers [addr - r_t0out], time - 1 )->counter = 0;
|
||||
break;
|
||||
|
||||
// Registers that act like RAM
|
||||
case 0x8:
|
||||
case 0x9:
|
||||
REGS_IN [addr] = (uint8_t) data;
|
||||
break;
|
||||
|
||||
case r_test:
|
||||
if ( (uint8_t) data != 0x0A )
|
||||
dprintf( "SPC wrote to test register\n" );
|
||||
break;
|
||||
|
||||
case r_control:
|
||||
// port clears
|
||||
if ( data & 0x10 )
|
||||
{
|
||||
REGS_IN [r_cpuio0] = 0;
|
||||
REGS_IN [r_cpuio1] = 0;
|
||||
}
|
||||
if ( data & 0x20 )
|
||||
{
|
||||
REGS_IN [r_cpuio2] = 0;
|
||||
REGS_IN [r_cpuio3] = 0;
|
||||
}
|
||||
|
||||
// timers
|
||||
{
|
||||
for ( int i = 0; i < timer_count; i++ )
|
||||
{
|
||||
Timer* t = &m.timers [i];
|
||||
int enabled = data >> i & 1;
|
||||
if ( t->enabled != enabled )
|
||||
{
|
||||
t = run_timer( t, time );
|
||||
t->enabled = enabled;
|
||||
if ( enabled )
|
||||
{
|
||||
t->divider = 0;
|
||||
t->counter = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
enable_rom( data & 0x80 );
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void SNES_SPC::cpu_write_smp_reg( int data, rel_time_t time, int addr )
|
||||
{
|
||||
if ( addr == r_dspdata ) // 99%
|
||||
dsp_write( data, time );
|
||||
else
|
||||
cpu_write_smp_reg_( data, time, addr );
|
||||
}
|
||||
|
||||
void SNES_SPC::cpu_write_high( int data, int i, rel_time_t time )
|
||||
{
|
||||
if ( i < rom_size )
|
||||
{
|
||||
m.hi_ram [i] = (uint8_t) data;
|
||||
if ( m.rom_enabled )
|
||||
RAM [i + rom_addr] = m.rom [i]; // restore overwritten ROM
|
||||
}
|
||||
else
|
||||
{
|
||||
assert( *(&(RAM [0]) + i + rom_addr) == (uint8_t) data );
|
||||
*(&(RAM [0]) + i + rom_addr) = cpu_pad_fill; // restore overwritten padding
|
||||
cpu_write( data, i + rom_addr - 0x10000, time );
|
||||
}
|
||||
}
|
||||
|
||||
int const bits_in_int = CHAR_BIT * sizeof (int);
|
||||
|
||||
void SNES_SPC::cpu_write( int data, int addr, rel_time_t time )
|
||||
{
|
||||
MEM_ACCESS( time, addr )
|
||||
|
||||
// RAM
|
||||
RAM [addr] = (uint8_t) data;
|
||||
int reg = addr - 0xF0;
|
||||
if ( reg >= 0 ) // 64%
|
||||
{
|
||||
// $F0-$FF
|
||||
if ( reg < reg_count ) // 87%
|
||||
{
|
||||
REGS [reg] = (uint8_t) data;
|
||||
|
||||
// Ports
|
||||
#ifdef SPC_PORT_WRITE_HOOK
|
||||
if ( (unsigned) (reg - r_cpuio0) < port_count )
|
||||
SPC_PORT_WRITE_HOOK( m.spc_time + time, (reg - r_cpuio0),
|
||||
(uint8_t) data, ®S [r_cpuio0] );
|
||||
#endif
|
||||
|
||||
// Registers other than $F2 and $F4-$F7
|
||||
//if ( reg != 2 && reg != 4 && reg != 5 && reg != 6 && reg != 7 )
|
||||
// TODO: this is a bit on the fragile side
|
||||
if ( ((~0x2F00 << (bits_in_int - 16)) << reg) < 0 ) // 36%
|
||||
cpu_write_smp_reg( data, time, reg );
|
||||
}
|
||||
// High mem/address wrap-around
|
||||
else
|
||||
{
|
||||
reg -= rom_addr - 0xF0;
|
||||
if ( reg >= 0 ) // 1% in IPL ROM area or address wrapped around
|
||||
cpu_write_high( data, reg, time );
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//// CPU read
|
||||
|
||||
inline int SNES_SPC::cpu_read_smp_reg( int reg, rel_time_t time )
|
||||
{
|
||||
int result = REGS_IN [reg];
|
||||
reg -= r_dspaddr;
|
||||
// DSP addr and data
|
||||
if ( (unsigned) reg <= 1 ) // 4% 0xF2 and 0xF3
|
||||
{
|
||||
result = REGS [r_dspaddr];
|
||||
if ( (unsigned) reg == 1 )
|
||||
result = dsp_read( time ); // 0xF3
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
int SNES_SPC::cpu_read( int addr, rel_time_t time )
|
||||
{
|
||||
MEM_ACCESS( time, addr )
|
||||
|
||||
// RAM
|
||||
int result = RAM [addr];
|
||||
int reg = addr - 0xF0;
|
||||
if ( reg >= 0 ) // 40%
|
||||
{
|
||||
reg -= 0x10;
|
||||
if ( (unsigned) reg >= 0xFF00 ) // 21%
|
||||
{
|
||||
reg += 0x10 - r_t0out;
|
||||
|
||||
// Timers
|
||||
if ( (unsigned) reg < timer_count ) // 90%
|
||||
{
|
||||
Timer* t = &m.timers [reg];
|
||||
if ( time >= t->next_time )
|
||||
t = run_timer_( t, time );
|
||||
result = t->counter;
|
||||
t->counter = 0;
|
||||
}
|
||||
// Other registers
|
||||
else if ( reg < 0 ) // 10%
|
||||
{
|
||||
result = cpu_read_smp_reg( reg + r_t0out, time );
|
||||
}
|
||||
else // 1%
|
||||
{
|
||||
assert( reg + (r_t0out + 0xF0 - 0x10000) < 0x100 );
|
||||
result = cpu_read( reg + (r_t0out + 0xF0 - 0x10000), time );
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
//// Run
|
||||
|
||||
// Prefix and suffix for CPU emulator function
|
||||
#define SPC_CPU_RUN_FUNC \
|
||||
BOOST::uint8_t* SNES_SPC::run_until_( time_t end_time )\
|
||||
{\
|
||||
rel_time_t rel_time = m.spc_time - end_time;\
|
||||
assert( rel_time <= 0 );\
|
||||
m.spc_time = end_time;\
|
||||
m.dsp_time += rel_time;\
|
||||
m.timers [0].next_time += rel_time;\
|
||||
m.timers [1].next_time += rel_time;\
|
||||
m.timers [2].next_time += rel_time;
|
||||
|
||||
#define SPC_CPU_RUN_FUNC_END \
|
||||
m.spc_time += rel_time;\
|
||||
m.dsp_time -= rel_time;\
|
||||
m.timers [0].next_time -= rel_time;\
|
||||
m.timers [1].next_time -= rel_time;\
|
||||
m.timers [2].next_time -= rel_time;\
|
||||
assert( m.spc_time <= end_time );\
|
||||
return ®S [r_cpuio0];\
|
||||
}
|
||||
|
||||
int const cpu_lag_max = 12 - 1; // DIV YA,X takes 12 clocks
|
||||
|
||||
void SNES_SPC::end_frame( time_t end_time )
|
||||
{
|
||||
// Catch CPU up to as close to end as possible. If final instruction
|
||||
// would exceed end, does NOT execute it and leaves m.spc_time < end.
|
||||
if ( end_time > m.spc_time )
|
||||
run_until_( end_time );
|
||||
|
||||
m.spc_time -= end_time;
|
||||
m.extra_clocks += end_time;
|
||||
|
||||
// Greatest number of clocks early that emulation can stop early due to
|
||||
// not being able to execute current instruction without going over
|
||||
// allowed time.
|
||||
assert( -cpu_lag_max <= m.spc_time && m.spc_time <= 0 );
|
||||
|
||||
// Catch timers up to CPU
|
||||
for ( int i = 0; i < timer_count; i++ )
|
||||
run_timer( &m.timers [i], 0 );
|
||||
|
||||
// Catch DSP up to CPU
|
||||
if ( m.dsp_time < 0 )
|
||||
{
|
||||
RUN_DSP( 0, max_reg_time );
|
||||
}
|
||||
|
||||
// Save any extra samples beyond what should be generated
|
||||
if ( m.buf_begin )
|
||||
save_extra();
|
||||
}
|
||||
|
||||
// Inclusion here allows static memory access functions and better optimization
|
||||
#include "SPC_CPU.h"
|
||||
288
source/snes9x/apu/SNES_SPC.h
Normal file
288
source/snes9x/apu/SNES_SPC.h
Normal file
@ -0,0 +1,288 @@
|
||||
// SNES SPC-700 APU emulator
|
||||
|
||||
// snes_spc 0.9.0
|
||||
#ifndef SNES_SPC_H
|
||||
#define SNES_SPC_H
|
||||
|
||||
#include "SPC_DSP.h"
|
||||
#include "blargg_endian.h"
|
||||
|
||||
struct SNES_SPC {
|
||||
public:
|
||||
typedef BOOST::uint8_t uint8_t;
|
||||
|
||||
// Must be called once before using
|
||||
blargg_err_t init();
|
||||
|
||||
// Sample pairs generated per second
|
||||
enum { sample_rate = 32000 };
|
||||
|
||||
// Emulator use
|
||||
|
||||
// Sets IPL ROM data. Library does not include ROM data. Most SPC music files
|
||||
// don't need ROM, but a full emulator must provide this.
|
||||
enum { rom_size = 0x40 };
|
||||
void init_rom( uint8_t const rom [rom_size] );
|
||||
|
||||
// Sets destination for output samples
|
||||
typedef short sample_t;
|
||||
void set_output( sample_t* out, int out_size );
|
||||
|
||||
// Number of samples written to output since last set
|
||||
int sample_count() const;
|
||||
|
||||
// Resets SPC to power-on state. This resets your output buffer, so you must
|
||||
// call set_output() after this.
|
||||
void reset();
|
||||
|
||||
// Emulates pressing reset switch on SNES. This resets your output buffer, so
|
||||
// you must call set_output() after this.
|
||||
void soft_reset();
|
||||
|
||||
// 1024000 SPC clocks per second, sample pair every 32 clocks
|
||||
typedef int time_t;
|
||||
enum { clock_rate = 1024000 };
|
||||
enum { clocks_per_sample = 32 };
|
||||
|
||||
// Emulated port read/write at specified time
|
||||
enum { port_count = 4 };
|
||||
int read_port ( time_t, int port );
|
||||
void write_port( time_t, int port, int data );
|
||||
|
||||
// Runs SPC to end_time and starts a new time frame at 0
|
||||
void end_frame( time_t end_time );
|
||||
|
||||
// Sound control
|
||||
|
||||
// Mutes voices corresponding to non-zero bits in mask (issues repeated KOFF events).
|
||||
// Reduces emulation accuracy.
|
||||
enum { voice_count = 8 };
|
||||
void mute_voices( int mask );
|
||||
|
||||
// If true, prevents channels and global volumes from being phase-negated.
|
||||
// Only supported by fast DSP.
|
||||
void disable_surround( bool disable = true );
|
||||
|
||||
// Sets tempo, where tempo_unit = normal, tempo_unit / 2 = half speed, etc.
|
||||
enum { tempo_unit = 0x100 };
|
||||
void set_tempo( int );
|
||||
|
||||
// SPC music files
|
||||
|
||||
// Loads SPC data into emulator
|
||||
enum { spc_min_file_size = 0x10180 };
|
||||
enum { spc_file_size = 0x10200 };
|
||||
blargg_err_t load_spc( void const* in, long size );
|
||||
|
||||
// Clears echo region. Useful after loading an SPC as many have garbage in echo.
|
||||
void clear_echo();
|
||||
|
||||
// Plays for count samples and write samples to out. Discards samples if out
|
||||
// is NULL. Count must be a multiple of 2 since output is stereo.
|
||||
blargg_err_t play( int count, sample_t* out );
|
||||
|
||||
// Skips count samples. Several times faster than play() when using fast DSP.
|
||||
blargg_err_t skip( int count );
|
||||
|
||||
// State save/load (only available with accurate DSP)
|
||||
|
||||
#if !SPC_NO_COPY_STATE_FUNCS
|
||||
// Saves/loads state
|
||||
enum { state_size = 68 * 1024L }; // maximum space needed when saving
|
||||
typedef SPC_DSP::copy_func_t copy_func_t;
|
||||
void copy_state( unsigned char** io, copy_func_t );
|
||||
|
||||
// Writes minimal header to spc_out
|
||||
static void init_header( void* spc_out );
|
||||
|
||||
// Saves emulator state as SPC file data. Writes spc_file_size bytes to spc_out.
|
||||
// Does not set up SPC header; use init_header() for that.
|
||||
void save_spc( void* spc_out );
|
||||
|
||||
// Returns true if new key-on events occurred since last check. Useful for
|
||||
// trimming silence while saving an SPC.
|
||||
bool check_kon();
|
||||
#endif
|
||||
|
||||
//// Snes9x Accessor
|
||||
|
||||
void dsp_set_spc_snapshot_callback( void (*callback) (void) );
|
||||
void dsp_dump_spc_snapshot( void );
|
||||
void dsp_set_stereo_switch( int );
|
||||
uint8_t dsp_reg_value( int, int );
|
||||
int dsp_envx_value( int );
|
||||
|
||||
public:
|
||||
BLARGG_DISABLE_NOTHROW
|
||||
|
||||
typedef BOOST::uint16_t uint16_t;
|
||||
|
||||
// Time relative to m_spc_time. Speeds up code a bit by eliminating need to
|
||||
// constantly add m_spc_time to time from CPU. CPU uses time that ends at
|
||||
// 0 to eliminate reloading end time every instruction. It pays off.
|
||||
typedef int rel_time_t;
|
||||
|
||||
struct Timer
|
||||
{
|
||||
rel_time_t next_time; // time of next event
|
||||
int prescaler;
|
||||
int period;
|
||||
int divider;
|
||||
int enabled;
|
||||
int counter;
|
||||
};
|
||||
enum { reg_count = 0x10 };
|
||||
enum { timer_count = 3 };
|
||||
enum { extra_size = SPC_DSP::extra_size };
|
||||
|
||||
enum { signature_size = 35 };
|
||||
|
||||
private:
|
||||
SPC_DSP dsp;
|
||||
|
||||
#if SPC_LESS_ACCURATE
|
||||
static signed char const reg_times_ [256];
|
||||
signed char reg_times [256];
|
||||
#endif
|
||||
|
||||
struct state_t
|
||||
{
|
||||
Timer timers [timer_count];
|
||||
|
||||
uint8_t smp_regs [2] [reg_count];
|
||||
|
||||
struct
|
||||
{
|
||||
int pc;
|
||||
int a;
|
||||
int x;
|
||||
int y;
|
||||
int psw;
|
||||
int sp;
|
||||
} cpu_regs;
|
||||
|
||||
rel_time_t dsp_time;
|
||||
time_t spc_time;
|
||||
bool echo_accessed;
|
||||
|
||||
int tempo;
|
||||
int skipped_kon;
|
||||
int skipped_koff;
|
||||
const char* cpu_error;
|
||||
|
||||
int extra_clocks;
|
||||
sample_t* buf_begin;
|
||||
sample_t const* buf_end;
|
||||
sample_t* extra_pos;
|
||||
sample_t extra_buf [extra_size];
|
||||
|
||||
int rom_enabled;
|
||||
uint8_t rom [rom_size];
|
||||
uint8_t hi_ram [rom_size];
|
||||
|
||||
unsigned char cycle_table [256];
|
||||
|
||||
struct
|
||||
{
|
||||
// padding to neutralize address overflow
|
||||
union {
|
||||
uint8_t padding1 [0x100];
|
||||
uint16_t align; // makes compiler align data for 16-bit access
|
||||
} padding1 [1];
|
||||
uint8_t ram [0x10000];
|
||||
uint8_t padding2 [0x100];
|
||||
} ram;
|
||||
};
|
||||
state_t m;
|
||||
|
||||
enum { rom_addr = 0xFFC0 };
|
||||
|
||||
enum { skipping_time = 127 };
|
||||
|
||||
// Value that padding should be filled with
|
||||
enum { cpu_pad_fill = 0xFF };
|
||||
|
||||
enum {
|
||||
r_test = 0x0, r_control = 0x1,
|
||||
r_dspaddr = 0x2, r_dspdata = 0x3,
|
||||
r_cpuio0 = 0x4, r_cpuio1 = 0x5,
|
||||
r_cpuio2 = 0x6, r_cpuio3 = 0x7,
|
||||
r_f8 = 0x8, r_f9 = 0x9,
|
||||
r_t0target = 0xA, r_t1target = 0xB, r_t2target = 0xC,
|
||||
r_t0out = 0xD, r_t1out = 0xE, r_t2out = 0xF
|
||||
};
|
||||
|
||||
void timers_loaded();
|
||||
void enable_rom( int enable );
|
||||
void reset_buf();
|
||||
void save_extra();
|
||||
void load_regs( uint8_t const in [reg_count] );
|
||||
void ram_loaded();
|
||||
void regs_loaded();
|
||||
void reset_time_regs();
|
||||
void reset_common( int timer_counter_init );
|
||||
|
||||
Timer* run_timer_ ( Timer* t, rel_time_t );
|
||||
Timer* run_timer ( Timer* t, rel_time_t );
|
||||
int dsp_read ( rel_time_t );
|
||||
void dsp_write ( int data, rel_time_t );
|
||||
void cpu_write_smp_reg_( int data, rel_time_t, int addr );
|
||||
void cpu_write_smp_reg ( int data, rel_time_t, int addr );
|
||||
void cpu_write_high ( int data, int i, rel_time_t );
|
||||
void cpu_write ( int data, int addr, rel_time_t );
|
||||
int cpu_read_smp_reg ( int i, rel_time_t );
|
||||
int cpu_read ( int addr, rel_time_t );
|
||||
unsigned CPU_mem_bit ( uint8_t const* pc, rel_time_t );
|
||||
|
||||
bool check_echo_access ( int addr );
|
||||
uint8_t* run_until_( time_t end_time );
|
||||
|
||||
struct spc_file_t
|
||||
{
|
||||
char signature [signature_size];
|
||||
uint8_t has_id666;
|
||||
uint8_t version;
|
||||
uint8_t pcl, pch;
|
||||
uint8_t a;
|
||||
uint8_t x;
|
||||
uint8_t y;
|
||||
uint8_t psw;
|
||||
uint8_t sp;
|
||||
char text [212];
|
||||
uint8_t ram [0x10000];
|
||||
uint8_t dsp [128];
|
||||
uint8_t unused [0x40];
|
||||
uint8_t ipl_rom [0x40];
|
||||
};
|
||||
|
||||
static char const signature [signature_size + 1];
|
||||
|
||||
void save_regs( uint8_t out [reg_count] );
|
||||
};
|
||||
|
||||
#include <assert.h>
|
||||
|
||||
inline int SNES_SPC::sample_count() const { return (m.extra_clocks >> 5) * 2; }
|
||||
|
||||
inline int SNES_SPC::read_port( time_t t, int port )
|
||||
{
|
||||
assert( (unsigned) port < port_count );
|
||||
return run_until_( t ) [port];
|
||||
}
|
||||
|
||||
inline void SNES_SPC::write_port( time_t t, int port, int data )
|
||||
{
|
||||
assert( (unsigned) port < port_count );
|
||||
run_until_( t ) [0x10 + port] = data;
|
||||
m.ram.ram [0xF4 + port] = data;
|
||||
}
|
||||
|
||||
inline void SNES_SPC::mute_voices( int mask ) { dsp.mute_voices( mask ); }
|
||||
|
||||
inline void SNES_SPC::disable_surround( bool disable ) { dsp.disable_surround( disable ); }
|
||||
|
||||
#if !SPC_NO_COPY_STATE_FUNCS
|
||||
inline bool SNES_SPC::check_kon() { return dsp.check_kon(); }
|
||||
#endif
|
||||
|
||||
#endif
|
||||
413
source/snes9x/apu/SNES_SPC_misc.cpp
Normal file
413
source/snes9x/apu/SNES_SPC_misc.cpp
Normal file
@ -0,0 +1,413 @@
|
||||
// SPC emulation support: init, sample buffering, reset, SPC loading
|
||||
|
||||
// snes_spc 0.9.0. http://www.slack.net/~ant/
|
||||
|
||||
#include "SNES_SPC.h"
|
||||
|
||||
#include <string.h>
|
||||
|
||||
/* Copyright (C) 2004-2007 Shay Green. This module is free software; you
|
||||
can redistribute it and/or modify it under the terms of the GNU Lesser
|
||||
General Public License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version. This
|
||||
module is distributed in the hope that it will be useful, but WITHOUT ANY
|
||||
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
||||
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
|
||||
details. You should have received a copy of the GNU Lesser General Public
|
||||
License along with this module; if not, write to the Free Software Foundation,
|
||||
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
|
||||
|
||||
#include "blargg_source.h"
|
||||
|
||||
#define RAM (m.ram.ram)
|
||||
#define REGS (m.smp_regs [0])
|
||||
#define REGS_IN (m.smp_regs [1])
|
||||
|
||||
// (n ? n : 256)
|
||||
#define IF_0_THEN_256( n ) ((uint8_t) ((n) - 1) + 1)
|
||||
|
||||
|
||||
//// Init
|
||||
|
||||
blargg_err_t SNES_SPC::init()
|
||||
{
|
||||
memset( &m, 0, sizeof m );
|
||||
dsp.init( RAM );
|
||||
|
||||
m.tempo = tempo_unit;
|
||||
|
||||
// Most SPC music doesn't need ROM, and almost all the rest only rely
|
||||
// on these two bytes
|
||||
m.rom [0x3E] = 0xFF;
|
||||
m.rom [0x3F] = 0xC0;
|
||||
|
||||
static unsigned char const cycle_table [128] =
|
||||
{// 01 23 45 67 89 AB CD EF
|
||||
0x28,0x47,0x34,0x36,0x26,0x54,0x54,0x68, // 0
|
||||
0x48,0x47,0x45,0x56,0x55,0x65,0x22,0x46, // 1
|
||||
0x28,0x47,0x34,0x36,0x26,0x54,0x54,0x74, // 2
|
||||
0x48,0x47,0x45,0x56,0x55,0x65,0x22,0x38, // 3
|
||||
0x28,0x47,0x34,0x36,0x26,0x44,0x54,0x66, // 4
|
||||
0x48,0x47,0x45,0x56,0x55,0x45,0x22,0x43, // 5
|
||||
0x28,0x47,0x34,0x36,0x26,0x44,0x54,0x75, // 6
|
||||
0x48,0x47,0x45,0x56,0x55,0x55,0x22,0x36, // 7
|
||||
0x28,0x47,0x34,0x36,0x26,0x54,0x52,0x45, // 8
|
||||
0x48,0x47,0x45,0x56,0x55,0x55,0x22,0xC5, // 9
|
||||
0x38,0x47,0x34,0x36,0x26,0x44,0x52,0x44, // A
|
||||
0x48,0x47,0x45,0x56,0x55,0x55,0x22,0x34, // B
|
||||
0x38,0x47,0x45,0x47,0x25,0x64,0x52,0x49, // C
|
||||
0x48,0x47,0x56,0x67,0x45,0x55,0x22,0x83, // D
|
||||
0x28,0x47,0x34,0x36,0x24,0x53,0x43,0x40, // E
|
||||
0x48,0x47,0x45,0x56,0x34,0x54,0x22,0x60, // F
|
||||
};
|
||||
|
||||
// unpack cycle table
|
||||
for ( int i = 0; i < 128; i++ )
|
||||
{
|
||||
int n = cycle_table [i];
|
||||
m.cycle_table [i * 2 + 0] = n >> 4;
|
||||
m.cycle_table [i * 2 + 1] = n & 0x0F;
|
||||
}
|
||||
|
||||
#if SPC_LESS_ACCURATE
|
||||
memcpy( reg_times, reg_times_, sizeof reg_times );
|
||||
#endif
|
||||
|
||||
reset();
|
||||
return 0;
|
||||
}
|
||||
|
||||
void SNES_SPC::init_rom( uint8_t const in [rom_size] )
|
||||
{
|
||||
memcpy( m.rom, in, sizeof m.rom );
|
||||
}
|
||||
|
||||
void SNES_SPC::set_tempo( int t )
|
||||
{
|
||||
m.tempo = t;
|
||||
int const timer2_shift = 4; // 64 kHz
|
||||
int const other_shift = 3; // 8 kHz
|
||||
|
||||
#if SPC_DISABLE_TEMPO
|
||||
m.timers [2].prescaler = timer2_shift;
|
||||
m.timers [1].prescaler = timer2_shift + other_shift;
|
||||
m.timers [0].prescaler = timer2_shift + other_shift;
|
||||
#else
|
||||
if ( !t )
|
||||
t = 1;
|
||||
int const timer2_rate = 1 << timer2_shift;
|
||||
int rate = (timer2_rate * tempo_unit + (t >> 1)) / t;
|
||||
if ( rate < timer2_rate / 4 )
|
||||
rate = timer2_rate / 4; // max 4x tempo
|
||||
m.timers [2].prescaler = rate;
|
||||
m.timers [1].prescaler = rate << other_shift;
|
||||
m.timers [0].prescaler = rate << other_shift;
|
||||
#endif
|
||||
}
|
||||
|
||||
// Timer registers have been loaded. Applies these to the timers. Does not
|
||||
// reset timer prescalers or dividers.
|
||||
void SNES_SPC::timers_loaded()
|
||||
{
|
||||
int i;
|
||||
for ( i = 0; i < timer_count; i++ )
|
||||
{
|
||||
Timer* t = &m.timers [i];
|
||||
t->period = IF_0_THEN_256( REGS [r_t0target + i] );
|
||||
t->enabled = REGS [r_control] >> i & 1;
|
||||
t->counter = REGS_IN [r_t0out + i] & 0x0F;
|
||||
}
|
||||
|
||||
set_tempo( m.tempo );
|
||||
}
|
||||
|
||||
// Loads registers from unified 16-byte format
|
||||
void SNES_SPC::load_regs( uint8_t const in [reg_count] )
|
||||
{
|
||||
memcpy( REGS, in, reg_count );
|
||||
memcpy( REGS_IN, REGS, reg_count );
|
||||
|
||||
// These always read back as 0
|
||||
REGS_IN [r_test ] = 0;
|
||||
REGS_IN [r_control ] = 0;
|
||||
REGS_IN [r_t0target] = 0;
|
||||
REGS_IN [r_t1target] = 0;
|
||||
REGS_IN [r_t2target] = 0;
|
||||
}
|
||||
|
||||
// RAM was just loaded from SPC, with $F0-$FF containing SMP registers
|
||||
// and timer counts. Copies these to proper registers.
|
||||
void SNES_SPC::ram_loaded()
|
||||
{
|
||||
m.rom_enabled = 0;
|
||||
load_regs( &RAM [0xF0] );
|
||||
|
||||
// Put STOP instruction around memory to catch PC underflow/overflow
|
||||
memset( m.ram.padding1, cpu_pad_fill, sizeof m.ram.padding1 );
|
||||
memset( m.ram.padding2, cpu_pad_fill, sizeof m.ram.padding2 );
|
||||
}
|
||||
|
||||
// Registers were just loaded. Applies these new values.
|
||||
void SNES_SPC::regs_loaded()
|
||||
{
|
||||
enable_rom( REGS [r_control] & 0x80 );
|
||||
timers_loaded();
|
||||
}
|
||||
|
||||
void SNES_SPC::reset_time_regs()
|
||||
{
|
||||
m.cpu_error = 0;
|
||||
m.echo_accessed = 0;
|
||||
m.spc_time = 0;
|
||||
m.dsp_time = 0;
|
||||
#if SPC_LESS_ACCURATE
|
||||
m.dsp_time = clocks_per_sample + 1;
|
||||
#endif
|
||||
|
||||
for ( int i = 0; i < timer_count; i++ )
|
||||
{
|
||||
Timer* t = &m.timers [i];
|
||||
t->next_time = 1;
|
||||
t->divider = 0;
|
||||
}
|
||||
|
||||
regs_loaded();
|
||||
|
||||
m.extra_clocks = 0;
|
||||
reset_buf();
|
||||
}
|
||||
|
||||
void SNES_SPC::reset_common( int timer_counter_init )
|
||||
{
|
||||
int i;
|
||||
for ( i = 0; i < timer_count; i++ )
|
||||
REGS_IN [r_t0out + i] = timer_counter_init;
|
||||
|
||||
// Run IPL ROM
|
||||
memset( &m.cpu_regs, 0, sizeof m.cpu_regs );
|
||||
m.cpu_regs.pc = rom_addr;
|
||||
|
||||
REGS [r_test ] = 0x0A;
|
||||
REGS [r_control] = 0xB0; // ROM enabled, clear ports
|
||||
for ( i = 0; i < port_count; i++ )
|
||||
REGS_IN [r_cpuio0 + i] = 0;
|
||||
|
||||
reset_time_regs();
|
||||
}
|
||||
|
||||
void SNES_SPC::soft_reset()
|
||||
{
|
||||
reset_common( 0 );
|
||||
dsp.soft_reset();
|
||||
}
|
||||
|
||||
void SNES_SPC::reset()
|
||||
{
|
||||
m.cpu_regs.pc = 0xFFC0;
|
||||
m.cpu_regs.a = 0x00;
|
||||
m.cpu_regs.x = 0x00;
|
||||
m.cpu_regs.y = 0x00;
|
||||
m.cpu_regs.psw = 0x02;
|
||||
m.cpu_regs.sp = 0xEF;
|
||||
memset( RAM, 0x00, 0x10000 );
|
||||
ram_loaded();
|
||||
reset_common( 0x0F );
|
||||
dsp.reset();
|
||||
}
|
||||
|
||||
char const SNES_SPC::signature [signature_size + 1] =
|
||||
"SNES-SPC700 Sound File Data v0.30\x1A\x1A";
|
||||
|
||||
blargg_err_t SNES_SPC::load_spc( void const* data, long size )
|
||||
{
|
||||
spc_file_t const* const spc = (spc_file_t const*) data;
|
||||
|
||||
// be sure compiler didn't insert any padding into fle_t
|
||||
assert( sizeof (spc_file_t) == spc_min_file_size + 0x80 );
|
||||
|
||||
// Check signature and file size
|
||||
if ( size < signature_size || memcmp( spc, signature, 27 ) )
|
||||
return "Not an SPC file";
|
||||
|
||||
if ( size < spc_min_file_size )
|
||||
return "Corrupt SPC file";
|
||||
|
||||
// CPU registers
|
||||
m.cpu_regs.pc = spc->pch * 0x100 + spc->pcl;
|
||||
m.cpu_regs.a = spc->a;
|
||||
m.cpu_regs.x = spc->x;
|
||||
m.cpu_regs.y = spc->y;
|
||||
m.cpu_regs.psw = spc->psw;
|
||||
m.cpu_regs.sp = spc->sp;
|
||||
|
||||
// RAM and registers
|
||||
memcpy( RAM, spc->ram, 0x10000 );
|
||||
ram_loaded();
|
||||
|
||||
// DSP registers
|
||||
dsp.load( spc->dsp );
|
||||
|
||||
reset_time_regs();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void SNES_SPC::clear_echo()
|
||||
{
|
||||
if ( !(dsp.read( SPC_DSP::r_flg ) & 0x20) )
|
||||
{
|
||||
int addr = 0x100 * dsp.read( SPC_DSP::r_esa );
|
||||
int end = addr + 0x800 * (dsp.read( SPC_DSP::r_edl ) & 0x0F);
|
||||
if ( end > 0x10000 )
|
||||
end = 0x10000;
|
||||
memset( &RAM [addr], 0xFF, end - addr );
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//// Sample output
|
||||
|
||||
void SNES_SPC::reset_buf()
|
||||
{
|
||||
// Start with half extra buffer of silence
|
||||
sample_t* out = m.extra_buf;
|
||||
while ( out < &m.extra_buf [extra_size / 2] )
|
||||
*out++ = 0;
|
||||
|
||||
m.extra_pos = out;
|
||||
m.buf_begin = 0;
|
||||
|
||||
dsp.set_output( 0, 0 );
|
||||
}
|
||||
|
||||
void SNES_SPC::set_output( sample_t* out, int size )
|
||||
{
|
||||
require( (size & 1) == 0 ); // size must be even
|
||||
|
||||
m.extra_clocks &= clocks_per_sample - 1;
|
||||
if ( out )
|
||||
{
|
||||
sample_t const* out_end = out + size;
|
||||
m.buf_begin = out;
|
||||
m.buf_end = out_end;
|
||||
|
||||
// Copy extra to output
|
||||
sample_t const* in = m.extra_buf;
|
||||
while ( in < m.extra_pos && out < out_end )
|
||||
*out++ = *in++;
|
||||
|
||||
// Handle output being full already
|
||||
if ( out >= out_end )
|
||||
{
|
||||
// Have DSP write to remaining extra space
|
||||
out = dsp.extra();
|
||||
out_end = &dsp.extra() [extra_size];
|
||||
|
||||
// Copy any remaining extra samples as if DSP wrote them
|
||||
while ( in < m.extra_pos )
|
||||
*out++ = *in++;
|
||||
assert( out <= out_end );
|
||||
}
|
||||
|
||||
dsp.set_output( out, out_end - out );
|
||||
}
|
||||
else
|
||||
{
|
||||
reset_buf();
|
||||
}
|
||||
}
|
||||
|
||||
void SNES_SPC::save_extra()
|
||||
{
|
||||
// Get end pointers
|
||||
sample_t const* main_end = m.buf_end; // end of data written to buf
|
||||
sample_t const* dsp_end = dsp.out_pos(); // end of data written to dsp.extra()
|
||||
if ( m.buf_begin <= dsp_end && dsp_end <= main_end )
|
||||
{
|
||||
main_end = dsp_end;
|
||||
dsp_end = dsp.extra(); // nothing in DSP's extra
|
||||
}
|
||||
|
||||
// Copy any extra samples at these ends into extra_buf
|
||||
sample_t* out = m.extra_buf;
|
||||
sample_t const* in;
|
||||
for ( in = m.buf_begin + sample_count(); in < main_end; in++ )
|
||||
*out++ = *in;
|
||||
for ( in = dsp.extra(); in < dsp_end ; in++ )
|
||||
*out++ = *in;
|
||||
|
||||
m.extra_pos = out;
|
||||
assert( out <= &m.extra_buf [extra_size] );
|
||||
}
|
||||
|
||||
blargg_err_t SNES_SPC::play( int count, sample_t* out )
|
||||
{
|
||||
require( (count & 1) == 0 ); // must be even
|
||||
if ( count )
|
||||
{
|
||||
set_output( out, count );
|
||||
end_frame( count * (clocks_per_sample / 2) );
|
||||
}
|
||||
|
||||
const char* err = m.cpu_error;
|
||||
m.cpu_error = 0;
|
||||
return err;
|
||||
}
|
||||
|
||||
blargg_err_t SNES_SPC::skip( int count )
|
||||
{
|
||||
#if SPC_LESS_ACCURATE
|
||||
if ( count > 2 * sample_rate * 2 )
|
||||
{
|
||||
set_output( 0, 0 );
|
||||
|
||||
// Skip a multiple of 4 samples
|
||||
time_t end = count;
|
||||
count = (count & 3) + 1 * sample_rate * 2;
|
||||
end = (end - count) * (clocks_per_sample / 2);
|
||||
|
||||
m.skipped_kon = 0;
|
||||
m.skipped_koff = 0;
|
||||
|
||||
// Preserve DSP and timer synchronization
|
||||
// TODO: verify that this really preserves it
|
||||
int old_dsp_time = m.dsp_time + m.spc_time;
|
||||
m.dsp_time = end - m.spc_time + skipping_time;
|
||||
end_frame( end );
|
||||
m.dsp_time = m.dsp_time - skipping_time + old_dsp_time;
|
||||
|
||||
dsp.write( SPC_DSP::r_koff, m.skipped_koff & ~m.skipped_kon );
|
||||
dsp.write( SPC_DSP::r_kon , m.skipped_kon );
|
||||
clear_echo();
|
||||
}
|
||||
#endif
|
||||
|
||||
return play( count, 0 );
|
||||
}
|
||||
|
||||
//// Snes9x Accessor
|
||||
|
||||
void SNES_SPC::dsp_set_spc_snapshot_callback( void (*callback) (void) )
|
||||
{
|
||||
dsp.set_spc_snapshot_callback( callback );
|
||||
}
|
||||
|
||||
void SNES_SPC::dsp_dump_spc_snapshot( void )
|
||||
{
|
||||
dsp.dump_spc_snapshot();
|
||||
}
|
||||
|
||||
void SNES_SPC::dsp_set_stereo_switch( int value )
|
||||
{
|
||||
dsp.set_stereo_switch( value );
|
||||
}
|
||||
|
||||
SNES_SPC::uint8_t SNES_SPC::dsp_reg_value( int ch, int addr )
|
||||
{
|
||||
return dsp.reg_value( ch, addr );
|
||||
}
|
||||
|
||||
int SNES_SPC::dsp_envx_value( int ch )
|
||||
{
|
||||
return dsp.envx_value( ch );
|
||||
}
|
||||
142
source/snes9x/apu/SNES_SPC_state.cpp
Normal file
142
source/snes9x/apu/SNES_SPC_state.cpp
Normal file
@ -0,0 +1,142 @@
|
||||
// SPC emulation state save/load: copy_state(), save_spc()
|
||||
// Separate file to avoid linking in unless needed
|
||||
|
||||
// snes_spc 0.9.0. http://www.slack.net/‾ant/
|
||||
|
||||
#include "SNES_SPC.h"
|
||||
|
||||
#if !SPC_NO_COPY_STATE_FUNCS
|
||||
|
||||
#include <string.h>
|
||||
|
||||
/* Copyright (C) 2004-2007 Shay Green. This module is free software; you
|
||||
can redistribute it and/or modify it under the terms of the GNU Lesser
|
||||
General Public License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version. This
|
||||
module is distributed in the hope that it will be useful, but WITHOUT ANY
|
||||
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
||||
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
|
||||
details. You should have received a copy of the GNU Lesser General Public
|
||||
License along with this module; if not, write to the Free Software Foundation,
|
||||
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
|
||||
|
||||
#include <stdio.h>
|
||||
#include "blargg_source.h"
|
||||
|
||||
#define RAM (m.ram.ram)
|
||||
#define REGS (m.smp_regs [0])
|
||||
#define REGS_IN (m.smp_regs [1])
|
||||
|
||||
void SNES_SPC::save_regs( uint8_t out [reg_count] )
|
||||
{
|
||||
// Use current timer counter values
|
||||
for ( int i = 0; i < timer_count; i++ )
|
||||
out [r_t0out + i] = m.timers [i].counter;
|
||||
|
||||
// Last written values
|
||||
memcpy( out, REGS, r_t0out );
|
||||
}
|
||||
|
||||
void SNES_SPC::init_header( void* spc_out )
|
||||
{
|
||||
spc_file_t* const spc = (spc_file_t*) spc_out;
|
||||
|
||||
spc->has_id666 = 26; // has none
|
||||
spc->version = 30;
|
||||
memcpy( spc, signature, sizeof spc->signature );
|
||||
memset( spc->text, 0, sizeof spc->text );
|
||||
}
|
||||
|
||||
void SNES_SPC::save_spc( void* spc_out )
|
||||
{
|
||||
spc_file_t* const spc = (spc_file_t*) spc_out;
|
||||
|
||||
// CPU
|
||||
spc->pcl = (uint8_t) (m.cpu_regs.pc >> 0);
|
||||
spc->pch = (uint8_t) (m.cpu_regs.pc >> 8);
|
||||
spc->a = m.cpu_regs.a;
|
||||
spc->x = m.cpu_regs.x;
|
||||
spc->y = m.cpu_regs.y;
|
||||
spc->psw = m.cpu_regs.psw;
|
||||
spc->sp = m.cpu_regs.sp;
|
||||
|
||||
// RAM, ROM
|
||||
memcpy( spc->ram, RAM, sizeof spc->ram );
|
||||
if ( m.rom_enabled )
|
||||
memcpy( spc->ram + rom_addr, m.hi_ram, sizeof m.hi_ram );
|
||||
memset( spc->unused, 0, sizeof spc->unused );
|
||||
memcpy( spc->ipl_rom, m.rom, sizeof spc->ipl_rom );
|
||||
|
||||
// SMP registers
|
||||
save_regs( &spc->ram [0xF0] );
|
||||
int i;
|
||||
for ( i = 0; i < port_count; i++ )
|
||||
spc->ram [0xF0 + r_cpuio0 + i] = REGS_IN [r_cpuio0 + i];
|
||||
|
||||
// DSP registers
|
||||
for ( i = 0; i < SPC_DSP::register_count; i++ )
|
||||
spc->dsp [i] = dsp.read( i );
|
||||
}
|
||||
|
||||
#undef IF_0_THEN_256
|
||||
#define IF_0_THEN_256( n ) ((uint8_t) ((n) - 1) + 1)
|
||||
void SNES_SPC::copy_state( unsigned char** io, copy_func_t copy )
|
||||
{
|
||||
SPC_State_Copier copier( io, copy );
|
||||
|
||||
// Make state data more readable by putting 64K RAM, 16 SMP registers,
|
||||
// then DSP (with its 128 registers) first
|
||||
|
||||
// RAM
|
||||
enable_rom( 0 ); // will get re-enabled if necessary in regs_loaded() below
|
||||
copier.copy( RAM, 0x10000 );
|
||||
|
||||
{
|
||||
// SMP registers
|
||||
uint8_t regs [reg_count];
|
||||
uint8_t regs_in [reg_count];
|
||||
|
||||
memcpy( regs, REGS, reg_count );
|
||||
memcpy( regs_in, REGS_IN, reg_count );
|
||||
|
||||
copier.copy( regs, sizeof regs );
|
||||
copier.copy( regs_in, sizeof regs_in );
|
||||
|
||||
memcpy( REGS, regs, reg_count);
|
||||
memcpy( REGS_IN, regs_in, reg_count );
|
||||
|
||||
enable_rom( REGS [r_control] & 0x80 );
|
||||
}
|
||||
|
||||
// CPU registers
|
||||
SPC_COPY( uint16_t, m.cpu_regs.pc );
|
||||
SPC_COPY( uint8_t, m.cpu_regs.a );
|
||||
SPC_COPY( uint8_t, m.cpu_regs.x );
|
||||
SPC_COPY( uint8_t, m.cpu_regs.y );
|
||||
SPC_COPY( uint8_t, m.cpu_regs.psw );
|
||||
SPC_COPY( uint8_t, m.cpu_regs.sp );
|
||||
copier.extra();
|
||||
|
||||
SPC_COPY( int16_t, m.spc_time );
|
||||
SPC_COPY( int16_t, m.dsp_time );
|
||||
|
||||
// DSP
|
||||
dsp.copy_state( io, copy );
|
||||
|
||||
// Timers
|
||||
for ( int i = 0; i < timer_count; i++ )
|
||||
{
|
||||
Timer* t = &m.timers [i];
|
||||
t->period = IF_0_THEN_256( REGS [r_t0target + i] );
|
||||
t->enabled = REGS [r_control] >> i & 1;
|
||||
SPC_COPY( int16_t, t->next_time );
|
||||
SPC_COPY( uint8_t, t->divider );
|
||||
SPC_COPY( uint8_t, t->counter );
|
||||
copier.extra();
|
||||
}
|
||||
|
||||
set_tempo( m.tempo );
|
||||
|
||||
copier.extra();
|
||||
}
|
||||
#endif
|
||||
1220
source/snes9x/apu/SPC_CPU.h
Normal file
1220
source/snes9x/apu/SPC_CPU.h
Normal file
File diff suppressed because it is too large
Load Diff
1062
source/snes9x/apu/SPC_DSP.cpp
Normal file
1062
source/snes9x/apu/SPC_DSP.cpp
Normal file
File diff suppressed because it is too large
Load Diff
317
source/snes9x/apu/SPC_DSP.h
Normal file
317
source/snes9x/apu/SPC_DSP.h
Normal file
@ -0,0 +1,317 @@
|
||||
// Highly accurate SNES SPC-700 DSP emulator
|
||||
|
||||
// snes_spc 0.9.0
|
||||
#ifndef SPC_DSP_H
|
||||
#define SPC_DSP_H
|
||||
|
||||
#include "blargg_common.h"
|
||||
|
||||
extern "C" { typedef void (*dsp_copy_func_t)( unsigned char** io, void* state, size_t ); }
|
||||
|
||||
class SPC_DSP {
|
||||
public:
|
||||
typedef BOOST::uint8_t uint8_t;
|
||||
|
||||
// Setup
|
||||
|
||||
// Initializes DSP and has it use the 64K RAM provided
|
||||
void init( void* ram_64k );
|
||||
|
||||
// Sets destination for output samples. If out is NULL or out_size is 0,
|
||||
// doesn't generate any.
|
||||
typedef short sample_t;
|
||||
void set_output( sample_t* out, int out_size );
|
||||
|
||||
// Number of samples written to output since it was last set, always
|
||||
// a multiple of 2. Undefined if more samples were generated than
|
||||
// output buffer could hold.
|
||||
int sample_count() const;
|
||||
|
||||
// Emulation
|
||||
|
||||
// Resets DSP to power-on state
|
||||
void reset();
|
||||
|
||||
// Emulates pressing reset switch on SNES
|
||||
void soft_reset();
|
||||
|
||||
// Reads/writes DSP registers. For accuracy, you must first call run()
|
||||
// to catch the DSP up to present.
|
||||
int read ( int addr ) const;
|
||||
void write( int addr, int data );
|
||||
|
||||
// Runs DSP for specified number of clocks (~1024000 per second). Every 32 clocks
|
||||
// a pair of samples is be generated.
|
||||
void run( int clock_count );
|
||||
|
||||
// Sound control
|
||||
|
||||
// Mutes voices corresponding to non-zero bits in mask (issues repeated KOFF events).
|
||||
// Reduces emulation accuracy.
|
||||
enum { voice_count = 8 };
|
||||
void mute_voices( int mask );
|
||||
|
||||
// State
|
||||
|
||||
// Resets DSP and uses supplied values to initialize registers
|
||||
enum { register_count = 128 };
|
||||
void load( uint8_t const regs [register_count] );
|
||||
|
||||
// Saves/loads exact emulator state
|
||||
enum { state_size = 640 }; // maximum space needed when saving
|
||||
typedef dsp_copy_func_t copy_func_t;
|
||||
void copy_state( unsigned char** io, copy_func_t );
|
||||
|
||||
// Returns non-zero if new key-on events occurred since last call
|
||||
bool check_kon();
|
||||
|
||||
// Snes9x Accessor
|
||||
|
||||
int stereo_switch;
|
||||
int take_spc_snapshot;
|
||||
void (*spc_snapshot_callback) (void);
|
||||
|
||||
void set_spc_snapshot_callback( void (*callback) (void) );
|
||||
void dump_spc_snapshot( void );
|
||||
void set_stereo_switch( int );
|
||||
uint8_t reg_value( int, int );
|
||||
int envx_value( int );
|
||||
|
||||
// DSP register addresses
|
||||
|
||||
// Global registers
|
||||
enum {
|
||||
r_mvoll = 0x0C, r_mvolr = 0x1C,
|
||||
r_evoll = 0x2C, r_evolr = 0x3C,
|
||||
r_kon = 0x4C, r_koff = 0x5C,
|
||||
r_flg = 0x6C, r_endx = 0x7C,
|
||||
r_efb = 0x0D, r_pmon = 0x2D,
|
||||
r_non = 0x3D, r_eon = 0x4D,
|
||||
r_dir = 0x5D, r_esa = 0x6D,
|
||||
r_edl = 0x7D,
|
||||
r_fir = 0x0F // 8 coefficients at 0x0F, 0x1F ... 0x7F
|
||||
};
|
||||
|
||||
// Voice registers
|
||||
enum {
|
||||
v_voll = 0x00, v_volr = 0x01,
|
||||
v_pitchl = 0x02, v_pitchh = 0x03,
|
||||
v_srcn = 0x04, v_adsr0 = 0x05,
|
||||
v_adsr1 = 0x06, v_gain = 0x07,
|
||||
v_envx = 0x08, v_outx = 0x09
|
||||
};
|
||||
|
||||
public:
|
||||
enum { extra_size = 16 };
|
||||
sample_t* extra() { return m.extra; }
|
||||
sample_t const* out_pos() const { return m.out; }
|
||||
void disable_surround( bool ) { } // not supported
|
||||
public:
|
||||
BLARGG_DISABLE_NOTHROW
|
||||
|
||||
typedef BOOST::int8_t int8_t;
|
||||
typedef BOOST::int16_t int16_t;
|
||||
|
||||
enum { echo_hist_size = 8 };
|
||||
|
||||
enum env_mode_t { env_release, env_attack, env_decay, env_sustain };
|
||||
enum { brr_buf_size = 12 };
|
||||
struct voice_t
|
||||
{
|
||||
int buf [brr_buf_size*2];// decoded samples (twice the size to simplify wrap handling)
|
||||
int buf_pos; // place in buffer where next samples will be decoded
|
||||
int interp_pos; // relative fractional position in sample (0x1000 = 1.0)
|
||||
int brr_addr; // address of current BRR block
|
||||
int brr_offset; // current decoding offset in BRR block
|
||||
uint8_t* regs; // pointer to voice's DSP registers
|
||||
int vbit; // bitmask for voice: 0x01 for voice 0, 0x02 for voice 1, etc.
|
||||
int kon_delay; // KON delay/current setup phase
|
||||
env_mode_t env_mode;
|
||||
int env; // current envelope level
|
||||
int hidden_env; // used by GAIN mode 7, very obscure quirk
|
||||
uint8_t t_envx_out;
|
||||
int voice_number;
|
||||
};
|
||||
private:
|
||||
enum { brr_block_size = 9 };
|
||||
|
||||
struct state_t
|
||||
{
|
||||
uint8_t regs [register_count];
|
||||
|
||||
// Echo history keeps most recent 8 samples (twice the size to simplify wrap handling)
|
||||
int echo_hist [echo_hist_size * 2] [2];
|
||||
int (*echo_hist_pos) [2]; // &echo_hist [0 to 7]
|
||||
|
||||
int every_other_sample; // toggles every sample
|
||||
int kon; // KON value when last checked
|
||||
int noise;
|
||||
int counter;
|
||||
int echo_offset; // offset from ESA in echo buffer
|
||||
int echo_length; // number of bytes that echo_offset will stop at
|
||||
int phase; // next clock cycle to run (0-31)
|
||||
bool kon_check; // set when a new KON occurs
|
||||
|
||||
// Hidden registers also written to when main register is written to
|
||||
int new_kon;
|
||||
uint8_t endx_buf;
|
||||
uint8_t envx_buf;
|
||||
uint8_t outx_buf;
|
||||
|
||||
// Temporary state between clocks
|
||||
|
||||
// read once per sample
|
||||
int t_pmon;
|
||||
int t_non;
|
||||
int t_eon;
|
||||
int t_dir;
|
||||
int t_koff;
|
||||
|
||||
// read a few clocks ahead then used
|
||||
int t_brr_next_addr;
|
||||
int t_adsr0;
|
||||
int t_brr_header;
|
||||
int t_brr_byte;
|
||||
int t_srcn;
|
||||
int t_esa;
|
||||
int t_echo_enabled;
|
||||
|
||||
// internal state that is recalculated every sample
|
||||
int t_dir_addr;
|
||||
int t_pitch;
|
||||
int t_output;
|
||||
int t_looped;
|
||||
int t_echo_ptr;
|
||||
|
||||
// left/right sums
|
||||
int t_main_out [2];
|
||||
int t_echo_out [2];
|
||||
int t_echo_in [2];
|
||||
|
||||
voice_t voices [voice_count];
|
||||
|
||||
// non-emulation state
|
||||
uint8_t* ram; // 64K shared RAM between DSP and SMP
|
||||
int mute_mask;
|
||||
sample_t* out;
|
||||
sample_t* out_end;
|
||||
sample_t* out_begin;
|
||||
sample_t extra [extra_size];
|
||||
};
|
||||
state_t m;
|
||||
|
||||
void init_counter();
|
||||
void run_counters();
|
||||
unsigned read_counter( int rate );
|
||||
|
||||
int interpolate( voice_t const* v );
|
||||
void run_envelope( voice_t* const v );
|
||||
void decode_brr( voice_t* v );
|
||||
|
||||
void misc_27();
|
||||
void misc_28();
|
||||
void misc_29();
|
||||
void misc_30();
|
||||
|
||||
void voice_output( voice_t const* v, int ch );
|
||||
void voice_V1( voice_t* const );
|
||||
void voice_V2( voice_t* const );
|
||||
void voice_V3( voice_t* const );
|
||||
void voice_V3a( voice_t* const );
|
||||
void voice_V3b( voice_t* const );
|
||||
void voice_V3c( voice_t* const );
|
||||
void voice_V4( voice_t* const );
|
||||
void voice_V5( voice_t* const );
|
||||
void voice_V6( voice_t* const );
|
||||
void voice_V7( voice_t* const );
|
||||
void voice_V8( voice_t* const );
|
||||
void voice_V9( voice_t* const );
|
||||
void voice_V7_V4_V1( voice_t* const );
|
||||
void voice_V8_V5_V2( voice_t* const );
|
||||
void voice_V9_V6_V3( voice_t* const );
|
||||
|
||||
void echo_read( int ch );
|
||||
int echo_output( int ch );
|
||||
void echo_write( int ch );
|
||||
void echo_22();
|
||||
void echo_23();
|
||||
void echo_24();
|
||||
void echo_25();
|
||||
void echo_26();
|
||||
void echo_27();
|
||||
void echo_28();
|
||||
void echo_29();
|
||||
void echo_30();
|
||||
|
||||
void soft_reset_common();
|
||||
};
|
||||
|
||||
#include <assert.h>
|
||||
|
||||
inline int SPC_DSP::sample_count() const { return m.out - m.out_begin; }
|
||||
|
||||
inline int SPC_DSP::read( int addr ) const
|
||||
{
|
||||
assert( (unsigned) addr < register_count );
|
||||
return m.regs [addr];
|
||||
}
|
||||
|
||||
inline void SPC_DSP::write( int addr, int data )
|
||||
{
|
||||
assert( (unsigned) addr < register_count );
|
||||
|
||||
m.regs [addr] = (uint8_t) data;
|
||||
switch ( addr & 0x0F )
|
||||
{
|
||||
case v_envx:
|
||||
m.envx_buf = (uint8_t) data;
|
||||
break;
|
||||
|
||||
case v_outx:
|
||||
m.outx_buf = (uint8_t) data;
|
||||
break;
|
||||
|
||||
case 0x0C:
|
||||
if ( addr == r_kon )
|
||||
m.new_kon = (uint8_t) data;
|
||||
|
||||
if ( addr == r_endx ) // always cleared, regardless of data written
|
||||
{
|
||||
m.endx_buf = 0;
|
||||
m.regs [r_endx] = 0;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
inline void SPC_DSP::mute_voices( int mask ) { m.mute_mask = mask; }
|
||||
|
||||
inline bool SPC_DSP::check_kon()
|
||||
{
|
||||
bool old = m.kon_check;
|
||||
m.kon_check = 0;
|
||||
return old;
|
||||
}
|
||||
|
||||
#if !SPC_NO_COPY_STATE_FUNCS
|
||||
|
||||
class SPC_State_Copier {
|
||||
SPC_DSP::copy_func_t func;
|
||||
unsigned char** buf;
|
||||
public:
|
||||
SPC_State_Copier( unsigned char** p, SPC_DSP::copy_func_t f ) { func = f; buf = p; }
|
||||
void copy( void* state, size_t size );
|
||||
int copy_int( int state, int size );
|
||||
void skip( int count );
|
||||
void extra();
|
||||
};
|
||||
|
||||
#define SPC_COPY( type, state )\
|
||||
{\
|
||||
state = (BOOST::type) copier.copy_int( state, sizeof (BOOST::type) );\
|
||||
assert( (BOOST::type) state == state );\
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#endif
|
||||
68
source/snes9x/apu/SPC_Filter.cpp
Normal file
68
source/snes9x/apu/SPC_Filter.cpp
Normal file
@ -0,0 +1,68 @@
|
||||
// snes_spc 0.9.0. http://www.slack.net/~ant/
|
||||
|
||||
#include "SPC_Filter.h"
|
||||
|
||||
#include <string.h>
|
||||
|
||||
/* Copyright (C) 2007 Shay Green. This module is free software; you
|
||||
can redistribute it and/or modify it under the terms of the GNU Lesser
|
||||
General Public License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version. This
|
||||
module is distributed in the hope that it will be useful, but WITHOUT ANY
|
||||
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
||||
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
|
||||
details. You should have received a copy of the GNU Lesser General Public
|
||||
License along with this module; if not, write to the Free Software Foundation,
|
||||
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
|
||||
|
||||
#include "blargg_source.h"
|
||||
|
||||
void SPC_Filter::clear() { memset( ch, 0, sizeof ch ); }
|
||||
|
||||
SPC_Filter::SPC_Filter()
|
||||
{
|
||||
gain = gain_unit;
|
||||
bass = bass_norm;
|
||||
clear();
|
||||
}
|
||||
|
||||
void SPC_Filter::run( short* io, int count )
|
||||
{
|
||||
require( (count & 1) == 0 ); // must be even
|
||||
|
||||
int const gain = this->gain;
|
||||
int const bass = this->bass;
|
||||
chan_t* c = &ch [2];
|
||||
do
|
||||
{
|
||||
// cache in registers
|
||||
int sum = (--c)->sum;
|
||||
int pp1 = c->pp1;
|
||||
int p1 = c->p1;
|
||||
|
||||
for ( int i = 0; i < count; i += 2 )
|
||||
{
|
||||
// Low-pass filter (two point FIR with coeffs 0.25, 0.75)
|
||||
int f = io [i] + p1;
|
||||
p1 = io [i] * 3;
|
||||
|
||||
// High-pass filter ("leaky integrator")
|
||||
int delta = f - pp1;
|
||||
pp1 = f;
|
||||
int s = sum >> (gain_bits + 2);
|
||||
sum += (delta * gain) - (sum >> bass);
|
||||
|
||||
// Clamp to 16 bits
|
||||
if ( (short) s != s )
|
||||
s = (s >> 31) ^ 0x7FFF;
|
||||
|
||||
io [i] = (short) s;
|
||||
}
|
||||
|
||||
c->p1 = p1;
|
||||
c->pp1 = pp1;
|
||||
c->sum = sum;
|
||||
++io;
|
||||
}
|
||||
while ( c != ch );
|
||||
}
|
||||
47
source/snes9x/apu/SPC_Filter.h
Normal file
47
source/snes9x/apu/SPC_Filter.h
Normal file
@ -0,0 +1,47 @@
|
||||
// Simple low-pass and high-pass filter to better match sound output of a SNES
|
||||
|
||||
// snes_spc 0.9.0
|
||||
#ifndef SPC_FILTER_H
|
||||
#define SPC_FILTER_H
|
||||
|
||||
#include "blargg_common.h"
|
||||
|
||||
struct SPC_Filter {
|
||||
public:
|
||||
|
||||
// Filters count samples of stereo sound in place. Count must be a multiple of 2.
|
||||
typedef short sample_t;
|
||||
void run( sample_t* io, int count );
|
||||
|
||||
// Optional features
|
||||
|
||||
// Clears filter to silence
|
||||
void clear();
|
||||
|
||||
// Sets gain (volume), where gain_unit is normal. Gains greater than gain_unit
|
||||
// are fine, since output is clamped to 16-bit sample range.
|
||||
enum { gain_unit = 0x100 };
|
||||
void set_gain( int gain );
|
||||
|
||||
// Sets amount of bass (logarithmic scale)
|
||||
enum { bass_none = 0 };
|
||||
enum { bass_norm = 8 }; // normal amount
|
||||
enum { bass_max = 31 };
|
||||
void set_bass( int bass );
|
||||
|
||||
public:
|
||||
SPC_Filter();
|
||||
BLARGG_DISABLE_NOTHROW
|
||||
private:
|
||||
enum { gain_bits = 8 };
|
||||
int gain;
|
||||
int bass;
|
||||
struct chan_t { int p1, pp1, sum; };
|
||||
chan_t ch [2];
|
||||
};
|
||||
|
||||
inline void SPC_Filter::set_gain( int g ) { gain = g; }
|
||||
|
||||
inline void SPC_Filter::set_bass( int b ) { bass = b; }
|
||||
|
||||
#endif
|
||||
654
source/snes9x/apu/apu.cpp
Normal file
654
source/snes9x/apu/apu.cpp
Normal file
@ -0,0 +1,654 @@
|
||||
/***********************************************************************************
|
||||
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
|
||||
|
||||
(c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com),
|
||||
Jerremy Koot (jkoot@snes9x.com)
|
||||
|
||||
(c) Copyright 2002 - 2004 Matthew Kendora
|
||||
|
||||
(c) Copyright 2002 - 2005 Peter Bortas (peter@bortas.org)
|
||||
|
||||
(c) Copyright 2004 - 2005 Joel Yliluoma (http://iki.fi/bisqwit/)
|
||||
|
||||
(c) Copyright 2001 - 2006 John Weidman (jweidman@slip.net)
|
||||
|
||||
(c) Copyright 2002 - 2006 funkyass (funkyass@spam.shaw.ca),
|
||||
Kris Bleakley (codeviolation@hotmail.com)
|
||||
|
||||
(c) Copyright 2002 - 2010 Brad Jorsch (anomie@users.sourceforge.net),
|
||||
Nach (n-a-c-h@users.sourceforge.net),
|
||||
zones (kasumitokoduck@yahoo.com)
|
||||
|
||||
(c) Copyright 2006 - 2007 nitsuja
|
||||
|
||||
(c) Copyright 2009 - 2010 BearOso,
|
||||
OV2
|
||||
|
||||
|
||||
BS-X C emulator code
|
||||
(c) Copyright 2005 - 2006 Dreamer Nom,
|
||||
zones
|
||||
|
||||
C4 x86 assembler and some C emulation code
|
||||
(c) Copyright 2000 - 2003 _Demo_ (_demo_@zsnes.com),
|
||||
Nach,
|
||||
zsKnight (zsknight@zsnes.com)
|
||||
|
||||
C4 C++ code
|
||||
(c) Copyright 2003 - 2006 Brad Jorsch,
|
||||
Nach
|
||||
|
||||
DSP-1 emulator code
|
||||
(c) Copyright 1998 - 2006 _Demo_,
|
||||
Andreas Naive (andreasnaive@gmail.com),
|
||||
Gary Henderson,
|
||||
Ivar (ivar@snes9x.com),
|
||||
John Weidman,
|
||||
Kris Bleakley,
|
||||
Matthew Kendora,
|
||||
Nach,
|
||||
neviksti (neviksti@hotmail.com)
|
||||
|
||||
DSP-2 emulator code
|
||||
(c) Copyright 2003 John Weidman,
|
||||
Kris Bleakley,
|
||||
Lord Nightmare (lord_nightmare@users.sourceforge.net),
|
||||
Matthew Kendora,
|
||||
neviksti
|
||||
|
||||
DSP-3 emulator code
|
||||
(c) Copyright 2003 - 2006 John Weidman,
|
||||
Kris Bleakley,
|
||||
Lancer,
|
||||
z80 gaiden
|
||||
|
||||
DSP-4 emulator code
|
||||
(c) Copyright 2004 - 2006 Dreamer Nom,
|
||||
John Weidman,
|
||||
Kris Bleakley,
|
||||
Nach,
|
||||
z80 gaiden
|
||||
|
||||
OBC1 emulator code
|
||||
(c) Copyright 2001 - 2004 zsKnight,
|
||||
pagefault (pagefault@zsnes.com),
|
||||
Kris Bleakley
|
||||
Ported from x86 assembler to C by sanmaiwashi
|
||||
|
||||
SPC7110 and RTC C++ emulator code used in 1.39-1.51
|
||||
(c) Copyright 2002 Matthew Kendora with research by
|
||||
zsKnight,
|
||||
John Weidman,
|
||||
Dark Force
|
||||
|
||||
SPC7110 and RTC C++ emulator code used in 1.52+
|
||||
(c) Copyright 2009 byuu,
|
||||
neviksti
|
||||
|
||||
S-DD1 C emulator code
|
||||
(c) Copyright 2003 Brad Jorsch with research by
|
||||
Andreas Naive,
|
||||
John Weidman
|
||||
|
||||
S-RTC C emulator code
|
||||
(c) Copyright 2001 - 2006 byuu,
|
||||
John Weidman
|
||||
|
||||
ST010 C++ emulator code
|
||||
(c) Copyright 2003 Feather,
|
||||
John Weidman,
|
||||
Kris Bleakley,
|
||||
Matthew Kendora
|
||||
|
||||
Super FX x86 assembler emulator code
|
||||
(c) Copyright 1998 - 2003 _Demo_,
|
||||
pagefault,
|
||||
zsKnight
|
||||
|
||||
Super FX C emulator code
|
||||
(c) Copyright 1997 - 1999 Ivar,
|
||||
Gary Henderson,
|
||||
John Weidman
|
||||
|
||||
Sound emulator code used in 1.5-1.51
|
||||
(c) Copyright 1998 - 2003 Brad Martin
|
||||
(c) Copyright 1998 - 2006 Charles Bilyue'
|
||||
|
||||
Sound emulator code used in 1.52+
|
||||
(c) Copyright 2004 - 2007 Shay Green (gblargg@gmail.com)
|
||||
|
||||
SH assembler code partly based on x86 assembler code
|
||||
(c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)
|
||||
|
||||
2xSaI filter
|
||||
(c) Copyright 1999 - 2001 Derek Liauw Kie Fa
|
||||
|
||||
HQ2x, HQ3x, HQ4x filters
|
||||
(c) Copyright 2003 Maxim Stepin (maxim@hiend3d.com)
|
||||
|
||||
NTSC filter
|
||||
(c) Copyright 2006 - 2007 Shay Green
|
||||
|
||||
GTK+ GUI code
|
||||
(c) Copyright 2004 - 2010 BearOso
|
||||
|
||||
Win32 GUI code
|
||||
(c) Copyright 2003 - 2006 blip,
|
||||
funkyass,
|
||||
Matthew Kendora,
|
||||
Nach,
|
||||
nitsuja
|
||||
(c) Copyright 2009 - 2010 OV2
|
||||
|
||||
Mac OS GUI code
|
||||
(c) Copyright 1998 - 2001 John Stiles
|
||||
(c) Copyright 2001 - 2010 zones
|
||||
|
||||
|
||||
Specific ports contains the works of other authors. See headers in
|
||||
individual files.
|
||||
|
||||
|
||||
Snes9x homepage: http://www.snes9x.com/
|
||||
|
||||
Permission to use, copy, modify and/or distribute Snes9x in both binary
|
||||
and source form, for non-commercial purposes, is hereby granted without
|
||||
fee, providing that this license information and copyright notice appear
|
||||
with all copies and any derived work.
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event shall the authors be held liable for any damages
|
||||
arising from the use of this software or it's derivatives.
|
||||
|
||||
Snes9x is freeware for PERSONAL USE only. Commercial users should
|
||||
seek permission of the copyright holders first. Commercial use includes,
|
||||
but is not limited to, charging money for Snes9x or software derived from
|
||||
Snes9x, including Snes9x or derivatives in commercial game bundles, and/or
|
||||
using Snes9x as a promotion for your commercial product.
|
||||
|
||||
The copyright holders request that bug fixes and improvements to the code
|
||||
should be forwarded to them so everyone can benefit from the modifications
|
||||
in future versions.
|
||||
|
||||
Super NES and Super Nintendo Entertainment System are trademarks of
|
||||
Nintendo Co., Limited and its subsidiary companies.
|
||||
***********************************************************************************/
|
||||
|
||||
|
||||
#include <math.h>
|
||||
#include "snes9x.h"
|
||||
#include "apu.h"
|
||||
#include "snapshot.h"
|
||||
#include "display.h"
|
||||
#include "resampler.h"
|
||||
|
||||
#define APU_DEFAULT_INPUT_RATE 32000
|
||||
#define APU_MINIMUM_SAMPLE_COUNT 512
|
||||
#define APU_MINIMUM_SAMPLE_BLOCK 128
|
||||
#define APU_NUMERATOR_NTSC 5632
|
||||
#define APU_DENOMINATOR_NTSC 118125
|
||||
#define APU_NUMERATOR_PAL 102400
|
||||
#define APU_DENOMINATOR_PAL 2128137
|
||||
|
||||
SNES_SPC *spc_core = NULL;
|
||||
|
||||
static uint8 APUROM[64] =
|
||||
{
|
||||
0xCD, 0xEF, 0xBD, 0xE8, 0x00, 0xC6, 0x1D, 0xD0,
|
||||
0xFC, 0x8F, 0xAA, 0xF4, 0x8F, 0xBB, 0xF5, 0x78,
|
||||
0xCC, 0xF4, 0xD0, 0xFB, 0x2F, 0x19, 0xEB, 0xF4,
|
||||
0xD0, 0xFC, 0x7E, 0xF4, 0xD0, 0x0B, 0xE4, 0xF5,
|
||||
0xCB, 0xF4, 0xD7, 0x00, 0xFC, 0xD0, 0xF3, 0xAB,
|
||||
0x01, 0x10, 0xEF, 0x7E, 0xF4, 0x10, 0xEB, 0xBA,
|
||||
0xF6, 0xDA, 0x00, 0xBA, 0xF4, 0xC4, 0xF4, 0xDD,
|
||||
0x5D, 0xD0, 0xDB, 0x1F, 0x00, 0x00, 0xC0, 0xFF
|
||||
};
|
||||
|
||||
namespace spc
|
||||
{
|
||||
static apu_callback sa_callback = NULL;
|
||||
static void *extra_data = NULL;
|
||||
|
||||
static bool8 sound_in_sync = TRUE;
|
||||
static bool8 sound_enabled = FALSE;
|
||||
|
||||
static int buffer_size;
|
||||
static int lag_master = 0;
|
||||
static int lag = 0;
|
||||
|
||||
static uint8 *landing_buffer = NULL;
|
||||
static uint8 *shrink_buffer = NULL;
|
||||
|
||||
static Resampler *resampler = NULL;
|
||||
|
||||
static int32 reference_time;
|
||||
static uint32 remainder;
|
||||
|
||||
static const int32 timing_hack_numerator = SNES_SPC::tempo_unit;
|
||||
static int32 timing_hack_denominator = SNES_SPC::tempo_unit;
|
||||
}
|
||||
|
||||
static void EightBitize (uint8 *, int);
|
||||
static void DeStereo (uint8 *, int);
|
||||
static void ReverseStereo (uint8 *, int);
|
||||
static void UpdatePlaybackRate (void);
|
||||
static void from_apu_to_state (uint8 **, void *, size_t);
|
||||
static void to_apu_from_state (uint8 **, void *, size_t);
|
||||
static void SPCSnapshotCallback (void);
|
||||
static inline int S9xAPUGetClock (int32);
|
||||
static inline int S9xAPUGetClockRemainder (int32);
|
||||
|
||||
|
||||
static void EightBitize (uint8 *buffer, int sample_count)
|
||||
{
|
||||
uint8 *buf8 = (uint8 *) buffer;
|
||||
int16 *buf16 = (int16 *) buffer;
|
||||
|
||||
for (int i = 0; i < sample_count; i++)
|
||||
buf8[i] = (uint8) ((buf16[i] / 256) + 128);
|
||||
}
|
||||
|
||||
static void DeStereo (uint8 *buffer, int sample_count)
|
||||
{
|
||||
int16 *buf = (int16 *) buffer;
|
||||
int32 s1, s2;
|
||||
|
||||
for (int i = 0; i < sample_count >> 1; i++)
|
||||
{
|
||||
s1 = (int32) buf[2 * i];
|
||||
s2 = (int32) buf[2 * i + 1];
|
||||
buf[i] = (int16) ((s1 + s2) >> 1);
|
||||
}
|
||||
}
|
||||
|
||||
static void ReverseStereo (uint8 *src_buffer, int sample_count)
|
||||
{
|
||||
int16 *buffer = (int16 *) src_buffer;
|
||||
|
||||
for (int i = 0; i < sample_count; i += 2)
|
||||
{
|
||||
buffer[i + 1] ^= buffer[i];
|
||||
buffer[i] ^= buffer[i + 1];
|
||||
buffer[i + 1] ^= buffer[i];
|
||||
}
|
||||
}
|
||||
|
||||
bool8 S9xMixSamples (uint8 *buffer, int sample_count)
|
||||
{
|
||||
static int shrink_buffer_size = -1;
|
||||
uint8 *dest;
|
||||
|
||||
if (!Settings.SixteenBitSound || !Settings.Stereo)
|
||||
{
|
||||
/* We still need both stereo samples for generating the mono sample */
|
||||
if (!Settings.Stereo)
|
||||
sample_count <<= 1;
|
||||
|
||||
/* We still have to generate 16-bit samples for bit-dropping, too */
|
||||
if (shrink_buffer_size < (sample_count << 1))
|
||||
{
|
||||
delete[] spc::shrink_buffer;
|
||||
spc::shrink_buffer = new uint8[sample_count << 1];
|
||||
shrink_buffer_size = sample_count << 1;
|
||||
}
|
||||
|
||||
dest = spc::shrink_buffer;
|
||||
}
|
||||
else
|
||||
dest = buffer;
|
||||
|
||||
if (Settings.Mute)
|
||||
{
|
||||
memset(dest, 0, sample_count << 1);
|
||||
spc::resampler->clear();
|
||||
|
||||
return (FALSE);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (spc::resampler->avail() >= (sample_count + spc::lag))
|
||||
{
|
||||
spc::resampler->read((short *) dest, sample_count);
|
||||
if (spc::lag == spc::lag_master)
|
||||
spc::lag = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
memset(buffer, (Settings.SixteenBitSound ? 0 : 128), (sample_count << (Settings.SixteenBitSound ? 1 : 0)) >> (Settings.Stereo ? 0 : 1));
|
||||
if (spc::lag == 0)
|
||||
spc::lag = spc::lag_master;
|
||||
|
||||
return (FALSE);
|
||||
}
|
||||
}
|
||||
|
||||
if (Settings.ReverseStereo && Settings.Stereo)
|
||||
ReverseStereo(dest, sample_count);
|
||||
|
||||
if (!Settings.Stereo || !Settings.SixteenBitSound)
|
||||
{
|
||||
if (!Settings.Stereo)
|
||||
{
|
||||
DeStereo(dest, sample_count);
|
||||
sample_count >>= 1;
|
||||
}
|
||||
|
||||
if (!Settings.SixteenBitSound)
|
||||
EightBitize(dest, sample_count);
|
||||
|
||||
memcpy(buffer, dest, (sample_count << (Settings.SixteenBitSound ? 1 : 0)));
|
||||
}
|
||||
|
||||
return (TRUE);
|
||||
}
|
||||
|
||||
int S9xGetSampleCount (void)
|
||||
{
|
||||
return (spc::resampler->avail() >> (Settings.Stereo ? 0 : 1));
|
||||
}
|
||||
|
||||
void S9xFinalizeSamples (void)
|
||||
{
|
||||
if (!Settings.Mute)
|
||||
{
|
||||
if (!spc::resampler->push((short *) spc::landing_buffer, spc_core->sample_count()))
|
||||
{
|
||||
/* We weren't able to process the entire buffer. Potential overrun. */
|
||||
spc::sound_in_sync = FALSE;
|
||||
|
||||
if (Settings.SoundSync && !Settings.TurboMode)
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
if (!Settings.SoundSync || Settings.TurboMode || Settings.Mute)
|
||||
spc::sound_in_sync = TRUE;
|
||||
else
|
||||
if (spc::resampler->space_empty() >= spc::resampler->space_filled())
|
||||
spc::sound_in_sync = TRUE;
|
||||
else
|
||||
spc::sound_in_sync = FALSE;
|
||||
|
||||
spc_core->set_output((SNES_SPC::sample_t *) spc::landing_buffer, spc::buffer_size >> 1);
|
||||
}
|
||||
|
||||
void S9xLandSamples (void)
|
||||
{
|
||||
if (spc::sa_callback != NULL)
|
||||
spc::sa_callback(spc::extra_data);
|
||||
else
|
||||
S9xFinalizeSamples();
|
||||
}
|
||||
|
||||
void S9xClearSamples (void)
|
||||
{
|
||||
spc::resampler->clear();
|
||||
spc::lag = spc::lag_master;
|
||||
}
|
||||
|
||||
bool8 S9xSyncSound (void)
|
||||
{
|
||||
if (!Settings.SoundSync || spc::sound_in_sync)
|
||||
return (TRUE);
|
||||
|
||||
S9xLandSamples();
|
||||
|
||||
return (spc::sound_in_sync);
|
||||
}
|
||||
|
||||
void S9xSetSamplesAvailableCallback (apu_callback callback, void *data)
|
||||
{
|
||||
spc::sa_callback = callback;
|
||||
spc::extra_data = data;
|
||||
}
|
||||
|
||||
static void UpdatePlaybackRate (void)
|
||||
{
|
||||
if (Settings.SoundInputRate == 0)
|
||||
Settings.SoundInputRate = APU_DEFAULT_INPUT_RATE;
|
||||
|
||||
double time_ratio = (double) Settings.SoundInputRate * spc::timing_hack_numerator / (Settings.SoundPlaybackRate * spc::timing_hack_denominator);
|
||||
spc::resampler->time_ratio(time_ratio);
|
||||
}
|
||||
|
||||
bool8 S9xInitSound (int buffer_ms, int lag_ms)
|
||||
{
|
||||
// buffer_ms : buffer size given in millisecond
|
||||
// lag_ms : allowable time-lag given in millisecond
|
||||
|
||||
int sample_count = buffer_ms * 32000 / 1000;
|
||||
int lag_sample_count = lag_ms * 32000 / 1000;
|
||||
|
||||
spc::lag_master = lag_sample_count;
|
||||
if (Settings.Stereo)
|
||||
spc::lag_master <<= 1;
|
||||
spc::lag = spc::lag_master;
|
||||
|
||||
if (sample_count < APU_MINIMUM_SAMPLE_COUNT)
|
||||
sample_count = APU_MINIMUM_SAMPLE_COUNT;
|
||||
|
||||
spc::buffer_size = sample_count;
|
||||
if (Settings.Stereo)
|
||||
spc::buffer_size <<= 1;
|
||||
if (Settings.SixteenBitSound)
|
||||
spc::buffer_size <<= 1;
|
||||
|
||||
printf("Sound buffer size: %d (%d samples)\n", spc::buffer_size, sample_count);
|
||||
|
||||
if (spc::landing_buffer)
|
||||
delete[] spc::landing_buffer;
|
||||
spc::landing_buffer = new uint8[spc::buffer_size * 2];
|
||||
if (!spc::landing_buffer)
|
||||
return (FALSE);
|
||||
|
||||
/* The resampler and spc unit use samples (16-bit short) as
|
||||
arguments. Use 2x in the resampler for buffer leveling with SoundSync */
|
||||
if (!spc::resampler)
|
||||
{
|
||||
spc::resampler = new Resampler(spc::buffer_size >> (Settings.SoundSync ? 0 : 1));
|
||||
if (!spc::resampler)
|
||||
{
|
||||
delete[] spc::landing_buffer;
|
||||
return (FALSE);
|
||||
}
|
||||
}
|
||||
else
|
||||
spc::resampler->resize(spc::buffer_size >> (Settings.SoundSync ? 0 : 1));
|
||||
|
||||
spc_core->set_output((SNES_SPC::sample_t *) spc::landing_buffer, spc::buffer_size >> 1);
|
||||
|
||||
UpdatePlaybackRate();
|
||||
|
||||
spc::sound_enabled = S9xOpenSoundDevice();
|
||||
|
||||
return (spc::sound_enabled);
|
||||
}
|
||||
|
||||
void S9xSetSoundControl (uint8 voice_switch)
|
||||
{
|
||||
spc_core->dsp_set_stereo_switch(voice_switch << 8 | voice_switch);
|
||||
}
|
||||
|
||||
void S9xSetSoundMute (bool8 mute)
|
||||
{
|
||||
Settings.Mute = mute;
|
||||
if (!spc::sound_enabled)
|
||||
Settings.Mute = TRUE;
|
||||
}
|
||||
|
||||
void S9xDumpSPCSnapshot (void)
|
||||
{
|
||||
spc_core->dsp_dump_spc_snapshot();
|
||||
}
|
||||
|
||||
static void SPCSnapshotCallback (void)
|
||||
{
|
||||
S9xSPCDump(S9xGetFilenameInc((".spc"), SPC_DIR));
|
||||
printf("Dumped key-on triggered spc snapshot.\n");
|
||||
}
|
||||
|
||||
bool8 S9xInitAPU (void)
|
||||
{
|
||||
spc_core = new SNES_SPC;
|
||||
if (!spc_core)
|
||||
return (FALSE);
|
||||
|
||||
spc_core->init();
|
||||
spc_core->init_rom(APUROM);
|
||||
|
||||
spc_core->dsp_set_spc_snapshot_callback(SPCSnapshotCallback);
|
||||
|
||||
spc::landing_buffer = NULL;
|
||||
spc::shrink_buffer = NULL;
|
||||
spc::resampler = NULL;
|
||||
|
||||
return (TRUE);
|
||||
}
|
||||
|
||||
void S9xDeinitAPU (void)
|
||||
{
|
||||
if (spc_core)
|
||||
{
|
||||
delete spc_core;
|
||||
spc_core = NULL;
|
||||
}
|
||||
|
||||
if (spc::resampler)
|
||||
{
|
||||
delete spc::resampler;
|
||||
spc::resampler = NULL;
|
||||
}
|
||||
|
||||
if (spc::landing_buffer)
|
||||
{
|
||||
delete[] spc::landing_buffer;
|
||||
spc::landing_buffer = NULL;
|
||||
}
|
||||
|
||||
if (spc::shrink_buffer)
|
||||
{
|
||||
delete[] spc::shrink_buffer;
|
||||
spc::shrink_buffer = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
static inline int S9xAPUGetClock (int32 cpucycles)
|
||||
{
|
||||
if (Settings.PAL)
|
||||
return ((int) floor(((double) APU_NUMERATOR_PAL * spc::timing_hack_numerator * (cpucycles - spc::reference_time) + spc::remainder) /
|
||||
((double) APU_DENOMINATOR_PAL * spc::timing_hack_denominator)));
|
||||
else
|
||||
return (APU_NUMERATOR_NTSC * spc::timing_hack_numerator * (cpucycles - spc::reference_time) + spc::remainder) /
|
||||
(APU_DENOMINATOR_NTSC * spc::timing_hack_denominator);
|
||||
}
|
||||
|
||||
static inline int S9xAPUGetClockRemainder (int32 cpucycles)
|
||||
{
|
||||
if (Settings.PAL)
|
||||
return ((int) fmod (((double) APU_NUMERATOR_PAL * spc::timing_hack_numerator * (cpucycles - spc::reference_time) + spc::remainder),
|
||||
((double) APU_DENOMINATOR_PAL * spc::timing_hack_denominator)));
|
||||
else
|
||||
return (APU_NUMERATOR_NTSC * spc::timing_hack_numerator * (cpucycles - spc::reference_time) + spc::remainder) %
|
||||
(APU_DENOMINATOR_NTSC * spc::timing_hack_denominator);
|
||||
}
|
||||
|
||||
uint8 S9xAPUReadPort (int port)
|
||||
{
|
||||
return ((uint8) spc_core->read_port(S9xAPUGetClock(CPU.Cycles), port));
|
||||
}
|
||||
|
||||
void S9xAPUWritePort (int port, uint8 byte)
|
||||
{
|
||||
spc_core->write_port(S9xAPUGetClock(CPU.Cycles), port, byte);
|
||||
}
|
||||
|
||||
void S9xAPUSetReferenceTime (int32 cpucycles)
|
||||
{
|
||||
spc::reference_time = cpucycles;
|
||||
}
|
||||
|
||||
void S9xAPUExecute (void)
|
||||
{
|
||||
/* Accumulate partial APU cycles */
|
||||
spc_core->end_frame(S9xAPUGetClock(CPU.Cycles));
|
||||
|
||||
spc::remainder = S9xAPUGetClockRemainder(CPU.Cycles);
|
||||
|
||||
S9xAPUSetReferenceTime(CPU.Cycles);
|
||||
}
|
||||
|
||||
void S9xAPUEndScanline (void)
|
||||
{
|
||||
S9xAPUExecute();
|
||||
|
||||
if (spc_core->sample_count() >= APU_MINIMUM_SAMPLE_BLOCK || !spc::sound_in_sync)
|
||||
S9xLandSamples();
|
||||
}
|
||||
|
||||
void S9xAPUTimingSetSpeedup (int ticks)
|
||||
{
|
||||
if (ticks != 0)
|
||||
printf("APU speedup hack: %d\n", ticks);
|
||||
|
||||
spc_core->set_tempo(SNES_SPC::tempo_unit - ticks);
|
||||
|
||||
spc::timing_hack_denominator = SNES_SPC::tempo_unit - ticks;
|
||||
|
||||
UpdatePlaybackRate();
|
||||
}
|
||||
|
||||
void S9xResetAPU (void)
|
||||
{
|
||||
spc::reference_time = 0;
|
||||
spc::remainder = 0;
|
||||
spc_core->reset();
|
||||
spc_core->set_output((SNES_SPC::sample_t *) spc::landing_buffer, spc::buffer_size >> 1);
|
||||
|
||||
spc::resampler->clear();
|
||||
}
|
||||
|
||||
void S9xSoftResetAPU (void)
|
||||
{
|
||||
spc::reference_time = 0;
|
||||
spc::remainder = 0;
|
||||
spc_core->soft_reset();
|
||||
spc_core->set_output((SNES_SPC::sample_t *) spc::landing_buffer, spc::buffer_size >> 1);
|
||||
|
||||
spc::resampler->clear();
|
||||
}
|
||||
|
||||
static void from_apu_to_state (uint8 **buf, void *var, size_t size)
|
||||
{
|
||||
memcpy(*buf, var, size);
|
||||
*buf += size;
|
||||
}
|
||||
|
||||
static void to_apu_from_state (uint8 **buf, void *var, size_t size)
|
||||
{
|
||||
memcpy(var, *buf, size);
|
||||
*buf += size;
|
||||
}
|
||||
|
||||
void S9xAPUSaveState (uint8 *block)
|
||||
{
|
||||
uint8 *ptr = block;
|
||||
|
||||
spc_core->copy_state(&ptr, from_apu_to_state);
|
||||
|
||||
SET_LE32(ptr, spc::reference_time);
|
||||
ptr += sizeof(int32);
|
||||
SET_LE32(ptr, spc::remainder);
|
||||
}
|
||||
|
||||
void S9xAPULoadState (uint8 *block)
|
||||
{
|
||||
uint8 *ptr = block;
|
||||
|
||||
S9xResetAPU();
|
||||
|
||||
spc_core->copy_state(&ptr, to_apu_from_state);
|
||||
|
||||
spc::reference_time = GET_LE32(ptr);
|
||||
ptr += sizeof(int32);
|
||||
spc::remainder = GET_LE32(ptr);
|
||||
}
|
||||
217
source/snes9x/apu/apu.h
Normal file
217
source/snes9x/apu/apu.h
Normal file
@ -0,0 +1,217 @@
|
||||
/***********************************************************************************
|
||||
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
|
||||
|
||||
(c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com),
|
||||
Jerremy Koot (jkoot@snes9x.com)
|
||||
|
||||
(c) Copyright 2002 - 2004 Matthew Kendora
|
||||
|
||||
(c) Copyright 2002 - 2005 Peter Bortas (peter@bortas.org)
|
||||
|
||||
(c) Copyright 2004 - 2005 Joel Yliluoma (http://iki.fi/bisqwit/)
|
||||
|
||||
(c) Copyright 2001 - 2006 John Weidman (jweidman@slip.net)
|
||||
|
||||
(c) Copyright 2002 - 2006 funkyass (funkyass@spam.shaw.ca),
|
||||
Kris Bleakley (codeviolation@hotmail.com)
|
||||
|
||||
(c) Copyright 2002 - 2010 Brad Jorsch (anomie@users.sourceforge.net),
|
||||
Nach (n-a-c-h@users.sourceforge.net),
|
||||
zones (kasumitokoduck@yahoo.com)
|
||||
|
||||
(c) Copyright 2006 - 2007 nitsuja
|
||||
|
||||
(c) Copyright 2009 - 2010 BearOso,
|
||||
OV2
|
||||
|
||||
|
||||
BS-X C emulator code
|
||||
(c) Copyright 2005 - 2006 Dreamer Nom,
|
||||
zones
|
||||
|
||||
C4 x86 assembler and some C emulation code
|
||||
(c) Copyright 2000 - 2003 _Demo_ (_demo_@zsnes.com),
|
||||
Nach,
|
||||
zsKnight (zsknight@zsnes.com)
|
||||
|
||||
C4 C++ code
|
||||
(c) Copyright 2003 - 2006 Brad Jorsch,
|
||||
Nach
|
||||
|
||||
DSP-1 emulator code
|
||||
(c) Copyright 1998 - 2006 _Demo_,
|
||||
Andreas Naive (andreasnaive@gmail.com),
|
||||
Gary Henderson,
|
||||
Ivar (ivar@snes9x.com),
|
||||
John Weidman,
|
||||
Kris Bleakley,
|
||||
Matthew Kendora,
|
||||
Nach,
|
||||
neviksti (neviksti@hotmail.com)
|
||||
|
||||
DSP-2 emulator code
|
||||
(c) Copyright 2003 John Weidman,
|
||||
Kris Bleakley,
|
||||
Lord Nightmare (lord_nightmare@users.sourceforge.net),
|
||||
Matthew Kendora,
|
||||
neviksti
|
||||
|
||||
DSP-3 emulator code
|
||||
(c) Copyright 2003 - 2006 John Weidman,
|
||||
Kris Bleakley,
|
||||
Lancer,
|
||||
z80 gaiden
|
||||
|
||||
DSP-4 emulator code
|
||||
(c) Copyright 2004 - 2006 Dreamer Nom,
|
||||
John Weidman,
|
||||
Kris Bleakley,
|
||||
Nach,
|
||||
z80 gaiden
|
||||
|
||||
OBC1 emulator code
|
||||
(c) Copyright 2001 - 2004 zsKnight,
|
||||
pagefault (pagefault@zsnes.com),
|
||||
Kris Bleakley
|
||||
Ported from x86 assembler to C by sanmaiwashi
|
||||
|
||||
SPC7110 and RTC C++ emulator code used in 1.39-1.51
|
||||
(c) Copyright 2002 Matthew Kendora with research by
|
||||
zsKnight,
|
||||
John Weidman,
|
||||
Dark Force
|
||||
|
||||
SPC7110 and RTC C++ emulator code used in 1.52+
|
||||
(c) Copyright 2009 byuu,
|
||||
neviksti
|
||||
|
||||
S-DD1 C emulator code
|
||||
(c) Copyright 2003 Brad Jorsch with research by
|
||||
Andreas Naive,
|
||||
John Weidman
|
||||
|
||||
S-RTC C emulator code
|
||||
(c) Copyright 2001 - 2006 byuu,
|
||||
John Weidman
|
||||
|
||||
ST010 C++ emulator code
|
||||
(c) Copyright 2003 Feather,
|
||||
John Weidman,
|
||||
Kris Bleakley,
|
||||
Matthew Kendora
|
||||
|
||||
Super FX x86 assembler emulator code
|
||||
(c) Copyright 1998 - 2003 _Demo_,
|
||||
pagefault,
|
||||
zsKnight
|
||||
|
||||
Super FX C emulator code
|
||||
(c) Copyright 1997 - 1999 Ivar,
|
||||
Gary Henderson,
|
||||
John Weidman
|
||||
|
||||
Sound emulator code used in 1.5-1.51
|
||||
(c) Copyright 1998 - 2003 Brad Martin
|
||||
(c) Copyright 1998 - 2006 Charles Bilyue'
|
||||
|
||||
Sound emulator code used in 1.52+
|
||||
(c) Copyright 2004 - 2007 Shay Green (gblargg@gmail.com)
|
||||
|
||||
SH assembler code partly based on x86 assembler code
|
||||
(c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)
|
||||
|
||||
2xSaI filter
|
||||
(c) Copyright 1999 - 2001 Derek Liauw Kie Fa
|
||||
|
||||
HQ2x, HQ3x, HQ4x filters
|
||||
(c) Copyright 2003 Maxim Stepin (maxim@hiend3d.com)
|
||||
|
||||
NTSC filter
|
||||
(c) Copyright 2006 - 2007 Shay Green
|
||||
|
||||
GTK+ GUI code
|
||||
(c) Copyright 2004 - 2010 BearOso
|
||||
|
||||
Win32 GUI code
|
||||
(c) Copyright 2003 - 2006 blip,
|
||||
funkyass,
|
||||
Matthew Kendora,
|
||||
Nach,
|
||||
nitsuja
|
||||
(c) Copyright 2009 - 2010 OV2
|
||||
|
||||
Mac OS GUI code
|
||||
(c) Copyright 1998 - 2001 John Stiles
|
||||
(c) Copyright 2001 - 2010 zones
|
||||
|
||||
|
||||
Specific ports contains the works of other authors. See headers in
|
||||
individual files.
|
||||
|
||||
|
||||
Snes9x homepage: http://www.snes9x.com/
|
||||
|
||||
Permission to use, copy, modify and/or distribute Snes9x in both binary
|
||||
and source form, for non-commercial purposes, is hereby granted without
|
||||
fee, providing that this license information and copyright notice appear
|
||||
with all copies and any derived work.
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event shall the authors be held liable for any damages
|
||||
arising from the use of this software or it's derivatives.
|
||||
|
||||
Snes9x is freeware for PERSONAL USE only. Commercial users should
|
||||
seek permission of the copyright holders first. Commercial use includes,
|
||||
but is not limited to, charging money for Snes9x or software derived from
|
||||
Snes9x, including Snes9x or derivatives in commercial game bundles, and/or
|
||||
using Snes9x as a promotion for your commercial product.
|
||||
|
||||
The copyright holders request that bug fixes and improvements to the code
|
||||
should be forwarded to them so everyone can benefit from the modifications
|
||||
in future versions.
|
||||
|
||||
Super NES and Super Nintendo Entertainment System are trademarks of
|
||||
Nintendo Co., Limited and its subsidiary companies.
|
||||
***********************************************************************************/
|
||||
|
||||
|
||||
#ifndef _APU_H_
|
||||
#define _APU_H_
|
||||
|
||||
#include "snes9x.h"
|
||||
#include "SNES_SPC.h"
|
||||
|
||||
typedef void (*apu_callback) (void *);
|
||||
|
||||
#define SPC_SAVE_STATE_BLOCK_SIZE (SNES_SPC::state_size + 8)
|
||||
|
||||
bool8 S9xInitAPU (void);
|
||||
void S9xDeinitAPU (void);
|
||||
void S9xResetAPU (void);
|
||||
void S9xSoftResetAPU (void);
|
||||
uint8 S9xAPUReadPort (int);
|
||||
void S9xAPUWritePort (int, uint8);
|
||||
void S9xAPUExecute (void);
|
||||
void S9xAPUEndScanline (void);
|
||||
void S9xAPUSetReferenceTime (int32);
|
||||
void S9xAPUTimingSetSpeedup (int);
|
||||
void S9xAPULoadState (uint8 *);
|
||||
void S9xAPUSaveState (uint8 *);
|
||||
void S9xDumpSPCSnapshot (void);
|
||||
|
||||
bool8 S9xInitSound (int, int);
|
||||
bool8 S9xOpenSoundDevice (void);
|
||||
|
||||
bool8 S9xSyncSound (void);
|
||||
int S9xGetSampleCount (void);
|
||||
void S9xSetSoundControl (uint8);
|
||||
void S9xSetSoundMute (bool8);
|
||||
void S9xLandSamples (void);
|
||||
void S9xFinalizeSamples (void);
|
||||
void S9xClearSamples (void);
|
||||
bool8 S9xMixSamples (uint8 *, int);
|
||||
void S9xSetSamplesAvailableCallback (apu_callback, void *);
|
||||
|
||||
extern SNES_SPC *spc_core;
|
||||
|
||||
#endif
|
||||
186
source/snes9x/apu/blargg_common.h
Normal file
186
source/snes9x/apu/blargg_common.h
Normal file
@ -0,0 +1,186 @@
|
||||
// Sets up common environment for Shay Green's libraries.
|
||||
// To change configuration options, modify blargg_config.h, not this file.
|
||||
|
||||
// snes_spc 0.9.0
|
||||
#ifndef BLARGG_COMMON_H
|
||||
#define BLARGG_COMMON_H
|
||||
|
||||
#include <stddef.h>
|
||||
#include <stdlib.h>
|
||||
#include <assert.h>
|
||||
#include <limits.h>
|
||||
|
||||
#undef BLARGG_COMMON_H
|
||||
// allow blargg_config.h to #include blargg_common.h
|
||||
#include "blargg_config.h"
|
||||
#ifndef BLARGG_COMMON_H
|
||||
#define BLARGG_COMMON_H
|
||||
|
||||
// BLARGG_RESTRICT: equivalent to restrict, where supported
|
||||
#if defined (__GNUC__) || _MSC_VER >= 1100
|
||||
#define BLARGG_RESTRICT __restrict
|
||||
#else
|
||||
#define BLARGG_RESTRICT
|
||||
#endif
|
||||
|
||||
// STATIC_CAST(T,expr): Used in place of static_cast<T> (expr)
|
||||
#ifndef STATIC_CAST
|
||||
#define STATIC_CAST(T,expr) ((T) (expr))
|
||||
#endif
|
||||
|
||||
// blargg_err_t (0 on success, otherwise error string)
|
||||
#ifndef blargg_err_t
|
||||
typedef const char* blargg_err_t;
|
||||
#endif
|
||||
|
||||
// blargg_vector - very lightweight vector of POD types (no constructor/destructor)
|
||||
template<class T>
|
||||
class blargg_vector {
|
||||
T* begin_;
|
||||
size_t size_;
|
||||
public:
|
||||
blargg_vector() : begin_( 0 ), size_( 0 ) { }
|
||||
~blargg_vector() { free( begin_ ); }
|
||||
size_t size() const { return size_; }
|
||||
T* begin() const { return begin_; }
|
||||
T* end() const { return begin_ + size_; }
|
||||
blargg_err_t resize( size_t n )
|
||||
{
|
||||
// TODO: blargg_common.cpp to hold this as an outline function, ugh
|
||||
void* p = realloc( begin_, n * sizeof (T) );
|
||||
if ( p )
|
||||
begin_ = (T*) p;
|
||||
else if ( n > size_ ) // realloc failure only a problem if expanding
|
||||
return "Out of memory";
|
||||
size_ = n;
|
||||
return 0;
|
||||
}
|
||||
void clear() { void* p = begin_; begin_ = 0; size_ = 0; free( p ); }
|
||||
T& operator [] ( size_t n ) const
|
||||
{
|
||||
assert( n <= size_ ); // <= to allow past-the-end value
|
||||
return begin_ [n];
|
||||
}
|
||||
};
|
||||
|
||||
#ifndef BLARGG_DISABLE_NOTHROW
|
||||
// throw spec mandatory in ISO C++ if operator new can return NULL
|
||||
#if __cplusplus >= 199711 || defined (__GNUC__)
|
||||
#define BLARGG_THROWS( spec ) throw spec
|
||||
#else
|
||||
#define BLARGG_THROWS( spec )
|
||||
#endif
|
||||
#define BLARGG_DISABLE_NOTHROW \
|
||||
void* operator new ( size_t s ) BLARGG_THROWS(()) { return malloc( s ); }\
|
||||
void operator delete ( void* p ) { free( p ); }
|
||||
#define BLARGG_NEW new
|
||||
#else
|
||||
#include <new>
|
||||
#define BLARGG_NEW new (std::nothrow)
|
||||
#endif
|
||||
|
||||
// BLARGG_4CHAR('a','b','c','d') = 'abcd' (four character integer constant)
|
||||
#define BLARGG_4CHAR( a, b, c, d ) \
|
||||
((a&0xFF)*0x1000000L + (b&0xFF)*0x10000L + (c&0xFF)*0x100L + (d&0xFF))
|
||||
|
||||
// BOOST_STATIC_ASSERT( expr ): Generates compile error if expr is 0.
|
||||
#ifndef BOOST_STATIC_ASSERT
|
||||
#ifdef _MSC_VER
|
||||
// MSVC6 (_MSC_VER < 1300) fails for use of __LINE__ when /Zl is specified
|
||||
#define BOOST_STATIC_ASSERT( expr ) \
|
||||
void blargg_failed_( int (*arg) [2 / (int) !!(expr) - 1] )
|
||||
#else
|
||||
// Some other compilers fail when declaring same function multiple times in class,
|
||||
// so differentiate them by line
|
||||
#define BOOST_STATIC_ASSERT( expr ) \
|
||||
void blargg_failed_( int (*arg) [2 / !!(expr) - 1] [__LINE__] )
|
||||
#endif
|
||||
#endif
|
||||
|
||||
// BLARGG_COMPILER_HAS_BOOL: If 0, provides bool support for old compiler. If 1,
|
||||
// compiler is assumed to support bool. If undefined, availability is determined.
|
||||
#ifndef BLARGG_COMPILER_HAS_BOOL
|
||||
#if defined (__MWERKS__)
|
||||
#if !__option(bool)
|
||||
#define BLARGG_COMPILER_HAS_BOOL 0
|
||||
#endif
|
||||
#elif defined (_MSC_VER)
|
||||
#if _MSC_VER < 1100
|
||||
#define BLARGG_COMPILER_HAS_BOOL 0
|
||||
#endif
|
||||
#elif defined (__GNUC__)
|
||||
// supports bool
|
||||
#elif __cplusplus < 199711
|
||||
#define BLARGG_COMPILER_HAS_BOOL 0
|
||||
#endif
|
||||
#endif
|
||||
#if defined (BLARGG_COMPILER_HAS_BOOL) && !BLARGG_COMPILER_HAS_BOOL
|
||||
// If you get errors here, modify your blargg_config.h file
|
||||
typedef int bool;
|
||||
const bool true = 1;
|
||||
const bool false = 0;
|
||||
#endif
|
||||
|
||||
// blargg_long/blargg_ulong = at least 32 bits, int if it's big enough
|
||||
|
||||
#if INT_MAX < 0x7FFFFFFF || LONG_MAX == 0x7FFFFFFF
|
||||
typedef long blargg_long;
|
||||
#else
|
||||
typedef int blargg_long;
|
||||
#endif
|
||||
|
||||
#if UINT_MAX < 0xFFFFFFFF || ULONG_MAX == 0xFFFFFFFF
|
||||
typedef unsigned long blargg_ulong;
|
||||
#else
|
||||
typedef unsigned blargg_ulong;
|
||||
#endif
|
||||
|
||||
// BOOST::int8_t etc.
|
||||
|
||||
// HAVE_STDINT_H: If defined, use <stdint.h> for int8_t etc.
|
||||
#if defined (HAVE_STDINT_H)
|
||||
#include <stdint.h>
|
||||
#define BOOST
|
||||
|
||||
// HAVE_INTTYPES_H: If defined, use <stdint.h> for int8_t etc.
|
||||
#elif defined (HAVE_INTTYPES_H)
|
||||
#include <inttypes.h>
|
||||
#define BOOST
|
||||
|
||||
#else
|
||||
struct BOOST
|
||||
{
|
||||
#if UCHAR_MAX == 0xFF && SCHAR_MAX == 0x7F
|
||||
typedef signed char int8_t;
|
||||
typedef unsigned char uint8_t;
|
||||
#else
|
||||
// No suitable 8-bit type available
|
||||
typedef struct see_blargg_common_h int8_t;
|
||||
typedef struct see_blargg_common_h uint8_t;
|
||||
#endif
|
||||
|
||||
#if USHRT_MAX == 0xFFFF
|
||||
typedef short int16_t;
|
||||
typedef unsigned short uint16_t;
|
||||
#else
|
||||
// No suitable 16-bit type available
|
||||
typedef struct see_blargg_common_h int16_t;
|
||||
typedef struct see_blargg_common_h uint16_t;
|
||||
#endif
|
||||
|
||||
#if ULONG_MAX == 0xFFFFFFFF
|
||||
typedef long int32_t;
|
||||
typedef unsigned long uint32_t;
|
||||
#elif UINT_MAX == 0xFFFFFFFF
|
||||
typedef int int32_t;
|
||||
typedef unsigned int uint32_t;
|
||||
#else
|
||||
// No suitable 32-bit type available
|
||||
typedef struct see_blargg_common_h int32_t;
|
||||
typedef struct see_blargg_common_h uint32_t;
|
||||
#endif
|
||||
};
|
||||
#endif
|
||||
|
||||
#endif
|
||||
#endif
|
||||
24
source/snes9x/apu/blargg_config.h
Normal file
24
source/snes9x/apu/blargg_config.h
Normal file
@ -0,0 +1,24 @@
|
||||
// snes_spc 0.9.0 user configuration file. Don't replace when updating library.
|
||||
|
||||
// snes_spc 0.9.0
|
||||
#ifndef BLARGG_CONFIG_H
|
||||
#define BLARGG_CONFIG_H
|
||||
|
||||
// Uncomment to disable debugging checks
|
||||
//#define NDEBUG 1
|
||||
|
||||
// Uncomment to enable platform-specific (and possibly non-portable) optimizations
|
||||
//#define BLARGG_NONPORTABLE 1
|
||||
|
||||
// Uncomment if automatic byte-order determination doesn't work
|
||||
//#define BLARGG_BIG_ENDIAN 1
|
||||
|
||||
// Uncomment if you get errors in the bool section of blargg_common.h
|
||||
//#define BLARGG_COMPILER_HAS_BOOL 1
|
||||
|
||||
// Use standard config.h if present
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include "config.h"
|
||||
#endif
|
||||
|
||||
#endif
|
||||
185
source/snes9x/apu/blargg_endian.h
Normal file
185
source/snes9x/apu/blargg_endian.h
Normal file
@ -0,0 +1,185 @@
|
||||
// CPU Byte Order Utilities
|
||||
|
||||
// snes_spc 0.9.0
|
||||
#ifndef BLARGG_ENDIAN
|
||||
#define BLARGG_ENDIAN
|
||||
|
||||
#include "blargg_common.h"
|
||||
|
||||
// BLARGG_CPU_CISC: Defined if CPU has very few general-purpose registers (< 16)
|
||||
#if defined (_M_IX86) || defined (_M_IA64) || defined (__i486__) || \
|
||||
defined (__x86_64__) || defined (__ia64__) || defined (__i386__)
|
||||
#define BLARGG_CPU_X86 1
|
||||
#define BLARGG_CPU_CISC 1
|
||||
#endif
|
||||
|
||||
#if defined (__powerpc__) || defined (__ppc__) || defined (__POWERPC__) || defined (__powerc)
|
||||
#define BLARGG_CPU_POWERPC 1
|
||||
#define BLARGG_CPU_RISC 1
|
||||
#endif
|
||||
|
||||
// BLARGG_BIG_ENDIAN, BLARGG_LITTLE_ENDIAN: Determined automatically, otherwise only
|
||||
// one may be #defined to 1. Only needed if something actually depends on byte order.
|
||||
#if !defined (BLARGG_BIG_ENDIAN) && !defined (BLARGG_LITTLE_ENDIAN)
|
||||
#ifdef __GLIBC__
|
||||
// GCC handles this for us
|
||||
#include <endian.h>
|
||||
#if __BYTE_ORDER == __LITTLE_ENDIAN
|
||||
#define BLARGG_LITTLE_ENDIAN 1
|
||||
#elif __BYTE_ORDER == __BIG_ENDIAN
|
||||
#define BLARGG_BIG_ENDIAN 1
|
||||
#endif
|
||||
#else
|
||||
|
||||
#if defined (LSB_FIRST) || defined (__LITTLE_ENDIAN__) || BLARGG_CPU_X86 || \
|
||||
(defined (LITTLE_ENDIAN) && LITTLE_ENDIAN+0 != 1234)
|
||||
#define BLARGG_LITTLE_ENDIAN 1
|
||||
#endif
|
||||
|
||||
#if defined (MSB_FIRST) || defined (__BIG_ENDIAN__) || defined (WORDS_BIGENDIAN) || \
|
||||
defined (__sparc__) || BLARGG_CPU_POWERPC || \
|
||||
(defined (BIG_ENDIAN) && BIG_ENDIAN+0 != 4321)
|
||||
#define BLARGG_BIG_ENDIAN 1
|
||||
#elif !defined (__mips__)
|
||||
// No endian specified; assume little-endian, since it's most common
|
||||
#define BLARGG_LITTLE_ENDIAN 1
|
||||
#endif
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#if BLARGG_LITTLE_ENDIAN && BLARGG_BIG_ENDIAN
|
||||
#undef BLARGG_LITTLE_ENDIAN
|
||||
#undef BLARGG_BIG_ENDIAN
|
||||
#endif
|
||||
|
||||
inline void blargg_verify_byte_order()
|
||||
{
|
||||
#ifndef NDEBUG
|
||||
#if BLARGG_BIG_ENDIAN
|
||||
volatile int i = 1;
|
||||
assert( *(volatile char*) &i == 0 );
|
||||
#elif BLARGG_LITTLE_ENDIAN
|
||||
volatile int i = 1;
|
||||
assert( *(volatile char*) &i != 0 );
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
|
||||
inline unsigned get_le16( void const* p )
|
||||
{
|
||||
return (unsigned) ((unsigned char const*) p) [1] << 8 |
|
||||
(unsigned) ((unsigned char const*) p) [0];
|
||||
}
|
||||
|
||||
inline unsigned get_be16( void const* p )
|
||||
{
|
||||
return (unsigned) ((unsigned char const*) p) [0] << 8 |
|
||||
(unsigned) ((unsigned char const*) p) [1];
|
||||
}
|
||||
|
||||
inline blargg_ulong get_le32( void const* p )
|
||||
{
|
||||
return (blargg_ulong) ((unsigned char const*) p) [3] << 24 |
|
||||
(blargg_ulong) ((unsigned char const*) p) [2] << 16 |
|
||||
(blargg_ulong) ((unsigned char const*) p) [1] << 8 |
|
||||
(blargg_ulong) ((unsigned char const*) p) [0];
|
||||
}
|
||||
|
||||
inline blargg_ulong get_be32( void const* p )
|
||||
{
|
||||
return (blargg_ulong) ((unsigned char const*) p) [0] << 24 |
|
||||
(blargg_ulong) ((unsigned char const*) p) [1] << 16 |
|
||||
(blargg_ulong) ((unsigned char const*) p) [2] << 8 |
|
||||
(blargg_ulong) ((unsigned char const*) p) [3];
|
||||
}
|
||||
|
||||
inline void set_le16( void* p, unsigned n )
|
||||
{
|
||||
((unsigned char*) p) [1] = (unsigned char) (n >> 8);
|
||||
((unsigned char*) p) [0] = (unsigned char) n;
|
||||
}
|
||||
|
||||
inline void set_be16( void* p, unsigned n )
|
||||
{
|
||||
((unsigned char*) p) [0] = (unsigned char) (n >> 8);
|
||||
((unsigned char*) p) [1] = (unsigned char) n;
|
||||
}
|
||||
|
||||
inline void set_le32( void* p, blargg_ulong n )
|
||||
{
|
||||
((unsigned char*) p) [0] = (unsigned char) n;
|
||||
((unsigned char*) p) [1] = (unsigned char) (n >> 8);
|
||||
((unsigned char*) p) [2] = (unsigned char) (n >> 16);
|
||||
((unsigned char*) p) [3] = (unsigned char) (n >> 24);
|
||||
}
|
||||
|
||||
inline void set_be32( void* p, blargg_ulong n )
|
||||
{
|
||||
((unsigned char*) p) [3] = (unsigned char) n;
|
||||
((unsigned char*) p) [2] = (unsigned char) (n >> 8);
|
||||
((unsigned char*) p) [1] = (unsigned char) (n >> 16);
|
||||
((unsigned char*) p) [0] = (unsigned char) (n >> 24);
|
||||
}
|
||||
|
||||
#if BLARGG_NONPORTABLE
|
||||
// Optimized implementation if byte order is known
|
||||
#if BLARGG_LITTLE_ENDIAN
|
||||
#define GET_LE16( addr ) (*(BOOST::uint16_t*) (addr))
|
||||
#define GET_LE32( addr ) (*(BOOST::uint32_t*) (addr))
|
||||
#define SET_LE16( addr, data ) (void) (*(BOOST::uint16_t*) (addr) = (data))
|
||||
#define SET_LE32( addr, data ) (void) (*(BOOST::uint32_t*) (addr) = (data))
|
||||
#elif BLARGG_BIG_ENDIAN
|
||||
#define GET_BE16( addr ) (*(BOOST::uint16_t*) (addr))
|
||||
#define GET_BE32( addr ) (*(BOOST::uint32_t*) (addr))
|
||||
#define SET_BE16( addr, data ) (void) (*(BOOST::uint16_t*) (addr) = (data))
|
||||
#define SET_BE32( addr, data ) (void) (*(BOOST::uint32_t*) (addr) = (data))
|
||||
|
||||
#if BLARGG_CPU_POWERPC
|
||||
// PowerPC has special byte-reversed instructions
|
||||
#if defined (__MWERKS__)
|
||||
#define GET_LE16( addr ) (__lhbrx( addr, 0 ))
|
||||
#define GET_LE32( addr ) (__lwbrx( addr, 0 ))
|
||||
#define SET_LE16( addr, in ) (__sthbrx( in, addr, 0 ))
|
||||
#define SET_LE32( addr, in ) (__stwbrx( in, addr, 0 ))
|
||||
#elif defined (__GNUC__)
|
||||
#define GET_LE16( addr ) ({unsigned ppc_lhbrx_; asm( "lhbrx %0,0,%1" : "=r" (ppc_lhbrx_) : "r" (addr), "0" (ppc_lhbrx_) ); ppc_lhbrx_;})
|
||||
#define GET_LE32( addr ) ({unsigned ppc_lwbrx_; asm( "lwbrx %0,0,%1" : "=r" (ppc_lwbrx_) : "r" (addr), "0" (ppc_lwbrx_) ); ppc_lwbrx_;})
|
||||
#define SET_LE16( addr, in ) ({asm( "sthbrx %0,0,%1" : : "r" (in), "r" (addr) );})
|
||||
#define SET_LE32( addr, in ) ({asm( "stwbrx %0,0,%1" : : "r" (in), "r" (addr) );})
|
||||
#endif
|
||||
#endif
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#ifndef GET_LE16
|
||||
#define GET_LE16( addr ) get_le16( addr )
|
||||
#define SET_LE16( addr, data ) set_le16( addr, data )
|
||||
#endif
|
||||
|
||||
#ifndef GET_LE32
|
||||
#define GET_LE32( addr ) get_le32( addr )
|
||||
#define SET_LE32( addr, data ) set_le32( addr, data )
|
||||
#endif
|
||||
|
||||
#ifndef GET_BE16
|
||||
#define GET_BE16( addr ) get_be16( addr )
|
||||
#define SET_BE16( addr, data ) set_be16( addr, data )
|
||||
#endif
|
||||
|
||||
#ifndef GET_BE32
|
||||
#define GET_BE32( addr ) get_be32( addr )
|
||||
#define SET_BE32( addr, data ) set_be32( addr, data )
|
||||
#endif
|
||||
|
||||
// auto-selecting versions
|
||||
|
||||
inline void set_le( BOOST::uint16_t* p, unsigned n ) { SET_LE16( p, n ); }
|
||||
inline void set_le( BOOST::uint32_t* p, blargg_ulong n ) { SET_LE32( p, n ); }
|
||||
inline void set_be( BOOST::uint16_t* p, unsigned n ) { SET_BE16( p, n ); }
|
||||
inline void set_be( BOOST::uint32_t* p, blargg_ulong n ) { SET_BE32( p, n ); }
|
||||
inline unsigned get_le( BOOST::uint16_t* p ) { return GET_LE16( p ); }
|
||||
inline blargg_ulong get_le( BOOST::uint32_t* p ) { return GET_LE32( p ); }
|
||||
inline unsigned get_be( BOOST::uint16_t* p ) { return GET_BE16( p ); }
|
||||
inline blargg_ulong get_be( BOOST::uint32_t* p ) { return GET_BE32( p ); }
|
||||
|
||||
#endif
|
||||
100
source/snes9x/apu/blargg_source.h
Normal file
100
source/snes9x/apu/blargg_source.h
Normal file
@ -0,0 +1,100 @@
|
||||
/* Included at the beginning of library source files, after all other #include lines.
|
||||
Sets up helpful macros and services used in my source code. They don't need
|
||||
module an annoying module prefix on their names since they are defined after
|
||||
all other #include lines. */
|
||||
|
||||
// snes_spc 0.9.0
|
||||
#ifndef BLARGG_SOURCE_H
|
||||
#define BLARGG_SOURCE_H
|
||||
|
||||
// If debugging is enabled, abort program if expr is false. Meant for checking
|
||||
// internal state and consistency. A failed assertion indicates a bug in the module.
|
||||
// void assert( bool expr );
|
||||
#include <assert.h>
|
||||
|
||||
// If debugging is enabled and expr is false, abort program. Meant for checking
|
||||
// caller-supplied parameters and operations that are outside the control of the
|
||||
// module. A failed requirement indicates a bug outside the module.
|
||||
// void require( bool expr );
|
||||
#undef require
|
||||
#define require( expr ) assert( expr )
|
||||
|
||||
// Like printf() except output goes to debug log file. Might be defined to do
|
||||
// nothing (not even evaluate its arguments).
|
||||
// void dprintf( const char* format, ... );
|
||||
static inline void blargg_dprintf_( const char*, ... ) { }
|
||||
#undef dprintf
|
||||
#define dprintf (1) ? (void) 0 : blargg_dprintf_
|
||||
|
||||
// If enabled, evaluate expr and if false, make debug log entry with source file
|
||||
// and line. Meant for finding situations that should be examined further, but that
|
||||
// don't indicate a problem. In all cases, execution continues normally.
|
||||
#undef check
|
||||
#define check( expr ) ((void) 0)
|
||||
|
||||
// If expr yields error string, return it from current function, otherwise continue.
|
||||
#undef RETURN_ERR
|
||||
#define RETURN_ERR( expr ) do { \
|
||||
blargg_err_t blargg_return_err_ = (expr); \
|
||||
if ( blargg_return_err_ ) return blargg_return_err_; \
|
||||
} while ( 0 )
|
||||
|
||||
// If ptr is 0, return out of memory error string.
|
||||
#undef CHECK_ALLOC
|
||||
#define CHECK_ALLOC( ptr ) do { if ( (ptr) == 0 ) return "Out of memory"; } while ( 0 )
|
||||
|
||||
// Avoid any macros which evaluate their arguments multiple times
|
||||
#undef min
|
||||
#undef max
|
||||
|
||||
#define DEF_MIN_MAX( type ) \
|
||||
static inline type min( type x, type y ) { if ( x < y ) return x; return y; }\
|
||||
static inline type max( type x, type y ) { if ( y < x ) return x; return y; }
|
||||
|
||||
DEF_MIN_MAX( int )
|
||||
DEF_MIN_MAX( unsigned )
|
||||
DEF_MIN_MAX( long )
|
||||
DEF_MIN_MAX( unsigned long )
|
||||
DEF_MIN_MAX( float )
|
||||
DEF_MIN_MAX( double )
|
||||
|
||||
#undef DEF_MIN_MAX
|
||||
|
||||
/*
|
||||
// using const references generates crappy code, and I am currenly only using these
|
||||
// for built-in types, so they take arguments by value
|
||||
|
||||
// TODO: remove
|
||||
inline int min( int x, int y )
|
||||
template<class T>
|
||||
inline T min( T x, T y )
|
||||
{
|
||||
if ( x < y )
|
||||
return x;
|
||||
return y;
|
||||
}
|
||||
|
||||
template<class T>
|
||||
inline T max( T x, T y )
|
||||
{
|
||||
if ( x < y )
|
||||
return y;
|
||||
return x;
|
||||
}
|
||||
*/
|
||||
|
||||
// TODO: good idea? bad idea?
|
||||
#undef byte
|
||||
#define byte byte_
|
||||
typedef unsigned char byte;
|
||||
|
||||
// deprecated
|
||||
#define BLARGG_CHECK_ALLOC CHECK_ALLOC
|
||||
#define BLARGG_RETURN_ERR RETURN_ERR
|
||||
|
||||
// BLARGG_SOURCE_BEGIN: If defined, #included, allowing redefition of dprintf and check
|
||||
#ifdef BLARGG_SOURCE_BEGIN
|
||||
#include BLARGG_SOURCE_BEGIN
|
||||
#endif
|
||||
|
||||
#endif
|
||||
504
source/snes9x/apu/license.txt
Normal file
504
source/snes9x/apu/license.txt
Normal file
@ -0,0 +1,504 @@
|
||||
GNU LESSER GENERAL PUBLIC LICENSE
|
||||
Version 2.1, February 1999
|
||||
|
||||
Copyright (C) 1991, 1999 Free Software Foundation, Inc.
|
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
[This is the first released version of the Lesser GPL. It also counts
|
||||
as the successor of the GNU Library Public License, version 2, hence
|
||||
the version number 2.1.]
|
||||
|
||||
Preamble
|
||||
|
||||
The licenses for most software are designed to take away your
|
||||
freedom to share and change it. By contrast, the GNU General Public
|
||||
Licenses are intended to guarantee your freedom to share and change
|
||||
free software--to make sure the software is free for all its users.
|
||||
|
||||
This license, the Lesser General Public License, applies to some
|
||||
specially designated software packages--typically libraries--of the
|
||||
Free Software Foundation and other authors who decide to use it. You
|
||||
can use it too, but we suggest you first think carefully about whether
|
||||
this license or the ordinary General Public License is the better
|
||||
strategy to use in any particular case, based on the explanations below.
|
||||
|
||||
When we speak of free software, we are referring to freedom of use,
|
||||
not price. Our General Public Licenses are designed to make sure that
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
|
||||
To protect your rights, we need to make restrictions that forbid
|
||||
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|
||||
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|
||||
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|
||||
|
||||
For example, if you distribute copies of the library, whether gratis
|
||||
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|
||||
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|
||||
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|
||||
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|
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|
||||
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|
||||
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||||
We protect your rights with a two-step method: (1) we copyright the
|
||||
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|
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|
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To protect each distributor, we want to make it very clear that
|
||||
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|
||||
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|
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|
||||
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|
||||
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|
||||
|
||||
Finally, software patents pose a constant threat to the existence of
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
|
||||
Most GNU software, including some libraries, is covered by the
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
|
||||
When a program is linked with a library, whether statically or using
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
|
||||
We call this license the "Lesser" General Public License because it
|
||||
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|
||||
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|
||||
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|
||||
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|
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|
||||
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||||
For example, on rare occasions, there may be a special need to
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|
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|
||||
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||||
In other cases, permission to use a particular library in non-free
|
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|
||||
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|
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|
||||
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|
||||
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|
||||
|
||||
Although the Lesser General Public License is Less protective of the
|
||||
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|
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|
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|
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|
||||
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|
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|
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|
||||
GNU LESSER GENERAL PUBLIC LICENSE
|
||||
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
||||
|
||||
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|
||||
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Each licensee is addressed as "you".
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A "library" means a collection of software functions and/or data
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The "Library", below, refers to any such software library or work
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|
||||
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|
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|
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||||
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|
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|
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|
||||
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||||
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|
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|
||||
the executable.
|
||||
|
||||
It may happen that this requirement contradicts the license
|
||||
restrictions of other proprietary libraries that do not normally
|
||||
accompany the operating system. Such a contradiction means you cannot
|
||||
use both them and the Library together in an executable that you
|
||||
distribute.
|
||||
|
||||
7. You may place library facilities that are a work based on the
|
||||
Library side-by-side in a single library together with other library
|
||||
facilities not covered by this License, and distribute such a combined
|
||||
library, provided that the separate distribution of the work based on
|
||||
the Library and of the other library facilities is otherwise
|
||||
permitted, and provided that you do these two things:
|
||||
|
||||
a) Accompany the combined library with a copy of the same work
|
||||
based on the Library, uncombined with any other library
|
||||
facilities. This must be distributed under the terms of the
|
||||
Sections above.
|
||||
|
||||
b) Give prominent notice with the combined library of the fact
|
||||
that part of it is a work based on the Library, and explaining
|
||||
where to find the accompanying uncombined form of the same work.
|
||||
|
||||
8. You may not copy, modify, sublicense, link with, or distribute
|
||||
the Library except as expressly provided under this License. Any
|
||||
attempt otherwise to copy, modify, sublicense, link with, or
|
||||
distribute the Library is void, and will automatically terminate your
|
||||
rights under this License. However, parties who have received copies,
|
||||
or rights, from you under this License will not have their licenses
|
||||
terminated so long as such parties remain in full compliance.
|
||||
|
||||
9. You are not required to accept this License, since you have not
|
||||
signed it. However, nothing else grants you permission to modify or
|
||||
distribute the Library or its derivative works. These actions are
|
||||
prohibited by law if you do not accept this License. Therefore, by
|
||||
modifying or distributing the Library (or any work based on the
|
||||
Library), you indicate your acceptance of this License to do so, and
|
||||
all its terms and conditions for copying, distributing or modifying
|
||||
the Library or works based on it.
|
||||
|
||||
10. Each time you redistribute the Library (or any work based on the
|
||||
Library), the recipient automatically receives a license from the
|
||||
original licensor to copy, distribute, link with or modify the Library
|
||||
subject to these terms and conditions. You may not impose any further
|
||||
restrictions on the recipients' exercise of the rights granted herein.
|
||||
You are not responsible for enforcing compliance by third parties with
|
||||
this License.
|
||||
|
||||
11. If, as a consequence of a court judgment or allegation of patent
|
||||
infringement or for any other reason (not limited to patent issues),
|
||||
conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot
|
||||
distribute so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you
|
||||
may not distribute the Library at all. For example, if a patent
|
||||
license would not permit royalty-free redistribution of the Library by
|
||||
all those who receive copies directly or indirectly through you, then
|
||||
the only way you could satisfy both it and this License would be to
|
||||
refrain entirely from distribution of the Library.
|
||||
|
||||
If any portion of this section is held invalid or unenforceable under any
|
||||
particular circumstance, the balance of the section is intended to apply,
|
||||
and the section as a whole is intended to apply in other circumstances.
|
||||
|
||||
It is not the purpose of this section to induce you to infringe any
|
||||
patents or other property right claims or to contest validity of any
|
||||
such claims; this section has the sole purpose of protecting the
|
||||
integrity of the free software distribution system which is
|
||||
implemented by public license practices. Many people have made
|
||||
generous contributions to the wide range of software distributed
|
||||
through that system in reliance on consistent application of that
|
||||
system; it is up to the author/donor to decide if he or she is willing
|
||||
to distribute software through any other system and a licensee cannot
|
||||
impose that choice.
|
||||
|
||||
This section is intended to make thoroughly clear what is believed to
|
||||
be a consequence of the rest of this License.
|
||||
|
||||
12. If the distribution and/or use of the Library is restricted in
|
||||
certain countries either by patents or by copyrighted interfaces, the
|
||||
original copyright holder who places the Library under this License may add
|
||||
an explicit geographical distribution limitation excluding those countries,
|
||||
so that distribution is permitted only in or among countries not thus
|
||||
excluded. In such case, this License incorporates the limitation as if
|
||||
written in the body of this License.
|
||||
|
||||
13. The Free Software Foundation may publish revised and/or new
|
||||
versions of the Lesser General Public License from time to time.
|
||||
Such new versions will be similar in spirit to the present version,
|
||||
but may differ in detail to address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the Library
|
||||
specifies a version number of this License which applies to it and
|
||||
"any later version", you have the option of following the terms and
|
||||
conditions either of that version or of any later version published by
|
||||
the Free Software Foundation. If the Library does not specify a
|
||||
license version number, you may choose any version ever published by
|
||||
the Free Software Foundation.
|
||||
|
||||
14. If you wish to incorporate parts of the Library into other free
|
||||
programs whose distribution conditions are incompatible with these,
|
||||
write to the author to ask for permission. For software which is
|
||||
copyrighted by the Free Software Foundation, write to the Free
|
||||
Software Foundation; we sometimes make exceptions for this. Our
|
||||
decision will be guided by the two goals of preserving the free status
|
||||
of all derivatives of our free software and of promoting the sharing
|
||||
and reuse of software generally.
|
||||
|
||||
NO WARRANTY
|
||||
|
||||
15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
|
||||
WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
|
||||
EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
|
||||
OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
|
||||
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
|
||||
LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
|
||||
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
||||
|
||||
16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
|
||||
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
|
||||
AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
|
||||
FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
|
||||
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
|
||||
LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
|
||||
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
|
||||
FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
|
||||
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
|
||||
DAMAGES.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
How to Apply These Terms to Your New Libraries
|
||||
|
||||
If you develop a new library, and you want it to be of the greatest
|
||||
possible use to the public, we recommend making it free software that
|
||||
everyone can redistribute and change. You can do so by permitting
|
||||
redistribution under these terms (or, alternatively, under the terms of the
|
||||
ordinary General Public License).
|
||||
|
||||
To apply these terms, attach the following notices to the library. It is
|
||||
safest to attach them to the start of each source file to most effectively
|
||||
convey the exclusion of warranty; and each file should have at least the
|
||||
"copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
<one line to give the library's name and a brief idea of what it does.>
|
||||
Copyright (C) <year> <name of author>
|
||||
|
||||
This library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
This library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with this library; if not, write to the Free Software
|
||||
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
You should also get your employer (if you work as a programmer) or your
|
||||
school, if any, to sign a "copyright disclaimer" for the library, if
|
||||
necessary. Here is a sample; alter the names:
|
||||
|
||||
Yoyodyne, Inc., hereby disclaims all copyright interest in the
|
||||
library `Frob' (a library for tweaking knobs) written by James Random Hacker.
|
||||
|
||||
<signature of Ty Coon>, 1 April 1990
|
||||
Ty Coon, President of Vice
|
||||
|
||||
That's all there is to it!
|
||||
|
||||
|
||||
162
source/snes9x/apu/resampler.h
Normal file
162
source/snes9x/apu/resampler.h
Normal file
@ -0,0 +1,162 @@
|
||||
/* Simple resampler based on bsnes's ruby audio library */
|
||||
|
||||
#ifndef __RESAMPLER_H
|
||||
#define __RESAMPLER_H
|
||||
|
||||
#include "ring_buffer.h"
|
||||
|
||||
#undef MIN
|
||||
#define MIN(a, b) ((a) < (b) ? (a) : (b))
|
||||
|
||||
#undef CLAMP
|
||||
#undef short_clamp
|
||||
#define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
|
||||
#define short_clamp(n) ((short) CLAMP((n), -32768, 32767))
|
||||
|
||||
class Resampler : public ring_buffer
|
||||
{
|
||||
protected:
|
||||
|
||||
double r_step;
|
||||
double r_frac;
|
||||
int r_left[4], r_right[4];
|
||||
|
||||
double
|
||||
hermite (double mu1, double a, double b, double c, double d)
|
||||
{
|
||||
const double tension = 0.0; //-1 = low, 0 = normal, 1 = high
|
||||
const double bias = 0.0; //-1 = left, 0 = even, 1 = right
|
||||
|
||||
double mu2, mu3, m0, m1, a0, a1, a2, a3;
|
||||
|
||||
mu2 = mu1 * mu1;
|
||||
mu3 = mu2 * mu1;
|
||||
|
||||
m0 = (b - a) * (1 + bias) * (1 - tension) / 2;
|
||||
m0 += (c - b) * (1 - bias) * (1 - tension) / 2;
|
||||
m1 = (c - b) * (1 + bias) * (1 - tension) / 2;
|
||||
m1 += (d - c) * (1 - bias) * (1 - tension) / 2;
|
||||
|
||||
a0 = +2 * mu3 - 3 * mu2 + 1;
|
||||
a1 = mu3 - 2 * mu2 + mu1;
|
||||
a2 = mu3 - mu2;
|
||||
a3 = -2 * mu3 + 3 * mu2;
|
||||
|
||||
return (a0 * b) + (a1 * m0) + (a2 * m1) + (a3 * c);
|
||||
}
|
||||
|
||||
public:
|
||||
Resampler (int num_samples) : ring_buffer (num_samples << 1)
|
||||
{
|
||||
r_frac = 0.0;
|
||||
}
|
||||
|
||||
~Resampler ()
|
||||
{
|
||||
}
|
||||
|
||||
void
|
||||
time_ratio (double ratio)
|
||||
{
|
||||
r_step = ratio;
|
||||
clear ();
|
||||
}
|
||||
|
||||
void
|
||||
clear (void)
|
||||
{
|
||||
ring_buffer::clear ();
|
||||
r_frac = 0;
|
||||
r_left [0] = r_left [1] = r_left [2] = r_left [3] = 0;
|
||||
r_right[0] = r_right[1] = r_right[2] = r_right[3] = 0;
|
||||
}
|
||||
|
||||
void
|
||||
read (short *data, int num_samples)
|
||||
{
|
||||
int i_position = start >> 1;
|
||||
short *internal_buffer = (short *) buffer;
|
||||
int o_position = 0;
|
||||
int consumed = 0;
|
||||
|
||||
while (o_position < num_samples && consumed < buffer_size)
|
||||
{
|
||||
int s_left = internal_buffer[i_position];
|
||||
int s_right = internal_buffer[i_position + 1];
|
||||
const double margin_of_error = 1.0e-10;
|
||||
|
||||
if (fabs(r_step - 1.0) < margin_of_error)
|
||||
{
|
||||
data[o_position] = (short) s_left;
|
||||
data[o_position + 1] = (short) s_right;
|
||||
|
||||
o_position += 2;
|
||||
i_position = (i_position + 2) % (buffer_size >> 1);
|
||||
consumed += 2;
|
||||
|
||||
continue;
|
||||
}
|
||||
|
||||
r_left [0] = r_left [1];
|
||||
r_left [1] = r_left [2];
|
||||
r_left [2] = r_left [3];
|
||||
r_left [3] = s_left;
|
||||
|
||||
r_right[0] = r_right[1];
|
||||
r_right[1] = r_right[2];
|
||||
r_right[2] = r_right[3];
|
||||
r_right[3] = s_right;
|
||||
|
||||
while (r_frac <= 1.0 && o_position < num_samples)
|
||||
{
|
||||
data[o_position] = short_clamp (hermite (r_frac, r_left [0], r_left [1], r_left [2], r_left [3]));
|
||||
data[o_position + 1] = short_clamp (hermite (r_frac, r_right[0], r_right[1], r_right[2], r_right[3]));
|
||||
|
||||
o_position += 2;
|
||||
|
||||
r_frac += r_step;
|
||||
}
|
||||
|
||||
if (r_frac > 1.0)
|
||||
{
|
||||
r_frac -= 1.0;
|
||||
i_position = (i_position + 2) % (buffer_size >> 1);
|
||||
consumed += 2;
|
||||
}
|
||||
}
|
||||
|
||||
size -= consumed << 1;
|
||||
start = (start + (consumed << 1)) % buffer_size;
|
||||
}
|
||||
|
||||
bool
|
||||
push (short *src, int num_samples)
|
||||
{
|
||||
if (max_write () < num_samples)
|
||||
return false;
|
||||
|
||||
ring_buffer::push ((unsigned char *) src, num_samples << 1);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
int
|
||||
max_write (void)
|
||||
{
|
||||
return space_empty () >> 1;
|
||||
}
|
||||
|
||||
void
|
||||
resize (int num_samples)
|
||||
{
|
||||
ring_buffer::resize (num_samples << 1);
|
||||
}
|
||||
|
||||
int
|
||||
avail (void)
|
||||
{
|
||||
return (int) floor (((size >> 2) - r_frac) / r_step) * 2;
|
||||
}
|
||||
};
|
||||
|
||||
#endif /* __RESAMPLER_H */
|
||||
111
source/snes9x/apu/ring_buffer.h
Normal file
111
source/snes9x/apu/ring_buffer.h
Normal file
@ -0,0 +1,111 @@
|
||||
/* Simple byte-based ring buffer. Licensed under public domain (C) BearOso. */
|
||||
|
||||
#ifndef __RING_BUFFER_H
|
||||
#define __RING_BUFFER_H
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#undef MIN
|
||||
#define MIN(a, b) ((a) < (b) ? (a) : (b))
|
||||
|
||||
class ring_buffer
|
||||
{
|
||||
protected:
|
||||
int size;
|
||||
int buffer_size;
|
||||
int start;
|
||||
unsigned char *buffer;
|
||||
|
||||
public:
|
||||
ring_buffer (int buffer_size)
|
||||
{
|
||||
this->buffer_size = buffer_size;
|
||||
buffer = new unsigned char[this->buffer_size];
|
||||
memset (buffer, 0, this->buffer_size);
|
||||
|
||||
size = 0;
|
||||
start = 0;
|
||||
}
|
||||
|
||||
~ring_buffer (void)
|
||||
{
|
||||
delete[] buffer;
|
||||
}
|
||||
|
||||
bool
|
||||
push (unsigned char *src, int bytes)
|
||||
{
|
||||
if (space_empty () < bytes)
|
||||
return false;
|
||||
|
||||
int end = (start + size) % buffer_size;
|
||||
int first_write_size = MIN (bytes, buffer_size - end);
|
||||
|
||||
memcpy (buffer + end, src, first_write_size);
|
||||
|
||||
if (bytes > first_write_size)
|
||||
memcpy (buffer, src + first_write_size, bytes - first_write_size);
|
||||
|
||||
size += bytes;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool
|
||||
pull (unsigned char *dst, int bytes)
|
||||
{
|
||||
if (space_filled () < bytes)
|
||||
return false;
|
||||
|
||||
memcpy (dst, buffer + start, MIN (bytes, buffer_size - start));
|
||||
|
||||
if (bytes > (buffer_size - start))
|
||||
memcpy (dst + (buffer_size - start), buffer, bytes - (buffer_size - start));
|
||||
|
||||
start = (start + bytes) % buffer_size;
|
||||
size -= bytes;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
inline int
|
||||
space_empty (void)
|
||||
{
|
||||
return buffer_size - size;
|
||||
}
|
||||
|
||||
inline int
|
||||
space_filled (void)
|
||||
{
|
||||
return size;
|
||||
}
|
||||
|
||||
void
|
||||
clear (void)
|
||||
{
|
||||
start = 0;
|
||||
size = 0;
|
||||
memset (buffer, 0, buffer_size);
|
||||
}
|
||||
|
||||
void
|
||||
resize (int size)
|
||||
{
|
||||
delete[] buffer;
|
||||
buffer_size = size;
|
||||
buffer = new unsigned char[buffer_size];
|
||||
memset (buffer, 0, this->buffer_size);
|
||||
|
||||
size = 0;
|
||||
start = 0;
|
||||
}
|
||||
|
||||
inline void
|
||||
cache_silence (void)
|
||||
{
|
||||
clear ();
|
||||
size = buffer_size;
|
||||
}
|
||||
};
|
||||
|
||||
#endif
|
||||
Loading…
x
Reference in New Issue
Block a user