1 files changed, 0 insertions, 330 deletions
diff --git a/plugins/gme/game-music-emu-0.5.5/gme/Sms_Apu.cpp b/plugins/gme/game-music-emu-0.5.5/gme/Sms_Apu.cpp
deleted file mode 100644
index b41fdec4..00000000
--- a/plugins/gme/game-music-emu-0.5.5/gme/Sms_Apu.cpp
+++ /dev/null
@@ -1,330 +0,0 @@
-// Sms_Snd_Emu 0.1.4. http://www.slack.net/~ant/
-
-#include "Sms_Apu.h"
-
-/* Copyright (C) 2003-2006 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"
-
-// Sms_Osc
-
-Sms_Osc::Sms_Osc()
-{
-	output = 0;
-	outputs [0] = 0; // always stays NULL
-	outputs [1] = 0;
-	outputs [2] = 0;
-	outputs [3] = 0;
-}
-
-void Sms_Osc::reset()
-{
-	delay = 0;
-	last_amp = 0;
-	volume = 0;
-	output_select = 3;
-	output = outputs [3];
-}
-
-// Sms_Square
-
-inline void Sms_Square::reset()
-{
-	period = 0;
-	phase = 0;
-	Sms_Osc::reset();
-}
-
-void Sms_Square::run( blip_time_t time, blip_time_t end_time )
-{
-	if ( !volume || period <= 128 )
-	{
-		// ignore 16kHz and higher
-		if ( last_amp )
-		{
-			synth->offset( time, -last_amp, output );
-			last_amp = 0;
-		}
-		time += delay;
-		if ( !period )
-		{
-			time = end_time;
-		}
-		else if ( time < end_time )
-		{
-			// keep calculating phase
-			int count = (end_time - time + period - 1) / period;
-			phase = (phase + count) & 1;
-			time += count * period;
-		}
-	}
-	else
-	{
-		int amp = phase ? volume : -volume;
-		{
-			int delta = amp - last_amp;
-			if ( delta )
-			{
-				last_amp = amp;
-				synth->offset( time, delta, output );
-			}
-		}
-		
-		time += delay;
-		if ( time < end_time )
-		{
-			Blip_Buffer* const output = this->output;
-			int delta = amp * 2;
-			do
-			{
-				delta = -delta;
-				synth->offset_inline( time, delta, output );
-				time += period;
-				phase ^= 1;
-			}
-			while ( time < end_time );
-			this->last_amp = phase ? volume : -volume;
-		}
-	}
-	delay = time - end_time;
-}
-
-// Sms_Noise
-
-static int const noise_periods [3] = { 0x100, 0x200, 0x400 };
-
-inline void Sms_Noise::reset()
-{
-	period = &noise_periods [0];
-	shifter = 0x8000;
-	feedback = 0x9000;
-	Sms_Osc::reset();
-}
-
-void Sms_Noise::run( blip_time_t time, blip_time_t end_time )
-{
-	int amp = volume;
-	if ( shifter & 1 )
-		amp = -amp;
-	
-	{
-		int delta = amp - last_amp;
-		if ( delta )
-		{
-			last_amp = amp;
-			synth.offset( time, delta, output );
-		}
-	}
-	
-	time += delay;
-	if ( !volume )
-		time = end_time;
-	
-	if ( time < end_time )
-	{
-		Blip_Buffer* const output = this->output;
-		unsigned shifter = this->shifter;
-		int delta = amp * 2;
-		int period = *this->period * 2;
-		if ( !period )
-			period = 16;
-		
-		do
-		{
-			int changed = shifter + 1;
-			shifter = (feedback & -(shifter & 1)) ^ (shifter >> 1);
-			if ( changed & 2 ) // true if bits 0 and 1 differ
-			{
-				delta = -delta;
-				synth.offset_inline( time, delta, output );
-			}
-			time += period;
-		}
-		while ( time < end_time );
-		
-		this->shifter = shifter;
-		this->last_amp = delta >> 1;
-	}
-	delay = time - end_time;
-}
-
-// Sms_Apu
-
-Sms_Apu::Sms_Apu()
-{
-	for ( int i = 0; i < 3; i++ )
-	{
-		squares [i].synth = &square_synth;
-		oscs [i] = &squares [i];
-	}
-	oscs [3] = &noise;
-	
-	volume( 1.0 );
-	reset();
-}
-
-Sms_Apu::~Sms_Apu()
-{
-}
-
-void Sms_Apu::volume( double vol )
-{
-	vol *= 0.85 / (osc_count * 64 * 2);
-	square_synth.volume( vol );
-	noise.synth.volume( vol );
-}
-
-void Sms_Apu::treble_eq( const blip_eq_t& eq )
-{
-	square_synth.treble_eq( eq );
-	noise.synth.treble_eq( eq );
-}
-
-void Sms_Apu::osc_output( int index, Blip_Buffer* center, Blip_Buffer* left, Blip_Buffer* right )
-{
-	require( (unsigned) index < osc_count );
-	require( (center && left && right) || (!center && !left && !right) );
-	Sms_Osc& osc = *oscs [index];
-	osc.outputs [1] = right;
-	osc.outputs [2] = left;
-	osc.outputs [3] = center;
-	osc.output = osc.outputs [osc.output_select];
-}
-
-void Sms_Apu::output( Blip_Buffer* center, Blip_Buffer* left, Blip_Buffer* right )
-{
-	for ( int i = 0; i < osc_count; i++ )
-		osc_output( i, center, left, right );
-}
-
-void Sms_Apu::reset( unsigned feedback, int noise_width )
-{
-	last_time = 0;
-	latch = 0;
-	
-	if ( !feedback || !noise_width )
-	{
-		feedback = 0x0009;
-		noise_width = 16;
-	}
-	// convert to "Galios configuration"
-	looped_feedback = 1 << (noise_width - 1);
-	noise_feedback  = 0;
-	while ( noise_width-- )
-	{
-		noise_feedback = (noise_feedback << 1) | (feedback & 1);
-		feedback >>= 1;
-	}
-	
-	squares [0].reset();
-	squares [1].reset();
-	squares [2].reset();
-	noise.reset();
-}
-
-void Sms_Apu::run_until( blip_time_t end_time )
-{
-	require( end_time >= last_time ); // end_time must not be before previous time
-	
-	if ( end_time > last_time )
-	{
-		// run oscillators
-		for ( int i = 0; i < osc_count; ++i )
-		{
-			Sms_Osc& osc = *oscs [i];
-			if ( osc.output )
-			{
-				osc.output->set_modified();
-				if ( i < 3 )
-					squares [i].run( last_time, end_time );
-				else
-					noise.run( last_time, end_time );
-			}
-		}
-		
-		last_time = end_time;
-	}
-}
-
-void Sms_Apu::end_frame( blip_time_t end_time )
-{
-	if ( end_time > last_time )
-		run_until( end_time );
-	
-	assert( last_time >= end_time );
-	last_time -= end_time;
-}
-
-void Sms_Apu::write_ggstereo( blip_time_t time, int data )
-{
-	require( (unsigned) data <= 0xFF );
-	
-	run_until( time );
-	
-	for ( int i = 0; i < osc_count; i++ )
-	{
-		Sms_Osc& osc = *oscs [i];
-		int flags = data >> i;
-		Blip_Buffer* old_output = osc.output;
-		osc.output_select = (flags >> 3 & 2) | (flags & 1);
-		osc.output = osc.outputs [osc.output_select];
-		if ( osc.output != old_output && osc.last_amp )
-		{
-			if ( old_output )
-			{
-				old_output->set_modified();
-				square_synth.offset( time, -osc.last_amp, old_output );
-			}
-			osc.last_amp = 0;
-		}
-	}
-}
-
-// volumes [i] = 64 * pow( 1.26, 15 - i ) / pow( 1.26, 15 )
-static unsigned char const volumes [16] = {
-	64, 50, 39, 31, 24, 19, 15, 12, 9, 7, 5, 4, 3, 2, 1, 0
-};
-
-void Sms_Apu::write_data( blip_time_t time, int data )
-{
-	require( (unsigned) data <= 0xFF );
-	
-	run_until( time );
-	
-	if ( data & 0x80 )
-		latch = data;
-	
-	int index = (latch >> 5) & 3;
-	if ( latch & 0x10 )
-	{
-		oscs [index]->volume = volumes [data & 15];
-	}
-	else if ( index < 3 )
-	{
-		Sms_Square& sq = squares [index];
-		if ( data & 0x80 )
-			sq.period = (sq.period & 0xFF00) | (data << 4 & 0x00FF);
-		else
-			sq.period = (sq.period & 0x00FF) | (data << 8 & 0x3F00);
-	}
-	else
-	{
-		int select = data & 3;
-		if ( select < 3 )
-			noise.period = &noise_periods [select];
-		else
-			noise.period = &squares [2].period;
-		
-		noise.feedback = (data & 0x04) ? noise_feedback : looped_feedback;
-		noise.shifter = 0x8000;
-	}
-}