1 files changed, 0 insertions, 336 deletions
diff --git a/plugins/gme/Game_Music_Emu-0.5.2/gme/Gb_Oscs.cpp b/plugins/gme/Game_Music_Emu-0.5.2/gme/Gb_Oscs.cpp
deleted file mode 100644
index 735653fa..00000000
--- a/plugins/gme/Game_Music_Emu-0.5.2/gme/Gb_Oscs.cpp
+++ /dev/null
@@ -1,336 +0,0 @@
-// Gb_Snd_Emu 0.1.5. http://www.slack.net/~ant/
-
-#include "Gb_Apu.h"
-
-#include <string.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"
-
-// Gb_Osc
-
-void Gb_Osc::reset()
-{
-	delay = 0;
-	last_amp = 0;
-	length = 0;
-	output_select = 3;
-	output = outputs [output_select];
-}
-
-void Gb_Osc::clock_length()
-{
-	if ( (regs [4] & len_enabled_mask) && length )
-		length--;
-}
-
-// Gb_Env
-
-void Gb_Env::clock_envelope()
-{
-	if ( env_delay && !--env_delay )
-	{
-		env_delay = regs [2] & 7;
-		int v = volume - 1 + (regs [2] >> 2 & 2);
-		if ( (unsigned) v < 15 )
-			volume = v;
-	}
-}
-
-bool Gb_Env::write_register( int reg, int data )
-{
-	switch ( reg )
-	{
-	case 1:
-		length = 64 - (regs [1] & 0x3F);
-		break;
-	
-	case 2:
-		if ( !(data >> 4) )
-			enabled = false;
-		break;
-	
-	case 4:
-		if ( data & trigger )
-		{
-			env_delay = regs [2] & 7;
-			volume = regs [2] >> 4;
-			enabled = true;
-			if ( length == 0 )
-				length = 64;
-			return true;
-		}
-	}
-	return false;
-}
-
-// Gb_Square
-
-void Gb_Square::reset()
-{
-	phase = 0;
-	sweep_freq = 0;
-	sweep_delay = 0;
-	Gb_Env::reset();
-}
-
-void Gb_Square::clock_sweep()
-{
-	int sweep_period = (regs [0] & period_mask) >> 4;
-	if ( sweep_period && sweep_delay && !--sweep_delay )
-	{
-		sweep_delay = sweep_period;
-		regs [3] = sweep_freq & 0xFF;
-		regs [4] = (regs [4] & ~0x07) | (sweep_freq >> 8 & 0x07);
-		
-		int offset = sweep_freq >> (regs [0] & shift_mask);
-		if ( regs [0] & 0x08 )
-			offset = -offset;
-		sweep_freq += offset;
-		
-		if ( sweep_freq < 0 )
-		{
-			sweep_freq = 0;
-		}
-		else if ( sweep_freq >= 2048 )
-		{
-			sweep_delay = 0; // don't modify channel frequency any further
-			sweep_freq = 2048; // silence sound immediately
-		}
-	}
-}
-
-void Gb_Square::run( blip_time_t time, blip_time_t end_time, int playing )
-{
-	if ( sweep_freq == 2048 )
-		playing = false;
-	
-	static unsigned char const table [4] = { 1, 2, 4, 6 };
-	int const duty = table [regs [1] >> 6];
-	int amp = volume & playing;
-	if ( phase >= duty )
-		amp = -amp;
-	
-	int frequency = this->frequency();
-	if ( unsigned (frequency - 1) > 2040 ) // frequency < 1 || frequency > 2041
-	{
-		// really high frequency results in DC at half volume
-		amp = volume >> 1;
-		playing = false;
-	}
-	
-	{
-		int delta = amp - last_amp;
-		if ( delta )
-		{
-			last_amp = amp;
-			synth->offset( time, delta, output );
-		}
-	}
-	
-	time += delay;
-	if ( !playing )
-		time = end_time;
-	
-	if ( time < end_time )
-	{
-		int const period = (2048 - frequency) * 4;
-		Blip_Buffer* const output = this->output;
-		int phase = this->phase;
-		int delta = amp * 2;
-		do
-		{
-			phase = (phase + 1) & 7;
-			if ( phase == 0 || phase == duty )
-			{
-				delta = -delta;
-				synth->offset_inline( time, delta, output );
-			}
-			time += period;
-		}
-		while ( time < end_time );
-		
-		this->phase = phase;
-		last_amp = delta >> 1;
-	}
-	delay = time - end_time;
-}
-
-// Gb_Noise
-
-void Gb_Noise::run( blip_time_t time, blip_time_t end_time, int playing )
-{
-	int amp = volume & playing;
-	int tap = 13 - (regs [3] & 8);
-	if ( bits >> tap & 2 )
-		amp = -amp;
-	
-	{
-		int delta = amp - last_amp;
-		if ( delta )
-		{
-			last_amp = amp;
-			synth->offset( time, delta, output );
-		}
-	}
-	
-	time += delay;
-	if ( !playing )
-		time = end_time;
-	
-	if ( time < end_time )
-	{
-		static unsigned char const table [8] = { 8, 16, 32, 48, 64, 80, 96, 112 };
-		int period = table [regs [3] & 7] << (regs [3] >> 4);
-		
-		// keep parallel resampled time to eliminate time conversion in the loop
-		Blip_Buffer* const output = this->output;
-		const blip_resampled_time_t resampled_period =
-				output->resampled_duration( period );
-		blip_resampled_time_t resampled_time = output->resampled_time( time );
-		unsigned bits = this->bits;
-		int delta = amp * 2;
-		
-		do
-		{
-			unsigned changed = (bits >> tap) + 1;
-			time += period;
-			bits <<= 1;
-			if ( changed & 2 )
-			{
-				delta = -delta;
-				bits |= 1;
-				synth->offset_resampled( resampled_time, delta, output );
-			}
-			resampled_time += resampled_period;
-		}
-		while ( time < end_time );
-		
-		this->bits = bits;
-		last_amp = delta >> 1;
-	}
-	delay = time - end_time;
-}
-
-// Gb_Wave
-
-inline void Gb_Wave::write_register( int reg, int data )
-{
-	switch ( reg )
-	{
-	case 0:
-		if ( !(data & 0x80) )
-			enabled = false;
-		break;
-	
-	case 1:
-		length = 256 - regs [1];
-		break;
-	
-	case 2:
-		volume = data >> 5 & 3;
-		break;
-	
-	case 4:
-		if ( data & trigger & regs [0] )
-		{
-			wave_pos = 0;
-			enabled = true;
-			if ( length == 0 )
-				length = 256;
-		}
-	}
-}
-
-void Gb_Wave::run( blip_time_t time, blip_time_t end_time, int playing )
-{
-	int volume_shift = (volume - 1) & 7; // volume = 0 causes shift = 7
-	int frequency;
-	{
-		int amp = (wave [wave_pos] >> volume_shift & playing) * 2;
-		
-		frequency = this->frequency();
-		if ( unsigned (frequency - 1) > 2044 ) // frequency < 1 || frequency > 2045
-		{
-			amp = 30 >> volume_shift & playing;
-			playing = false;
-		}
-		
-		int delta = amp - last_amp;
-		if ( delta )
-		{
-			last_amp = amp;
-			synth->offset( time, delta, output );
-		}
-	}
-	
-	time += delay;
-	if ( !playing )
-		time = end_time;
-	
-	if ( time < end_time )
-	{
-		Blip_Buffer* const output = this->output;
-		int const period = (2048 - frequency) * 2;
-	 	int wave_pos = (this->wave_pos + 1) & (wave_size - 1);
-	 	
-		do
-		{
-			int amp = (wave [wave_pos] >> volume_shift) * 2;
-			wave_pos = (wave_pos + 1) & (wave_size - 1);
-			int delta = amp - last_amp;
-			if ( delta )
-			{
-				last_amp = amp;
-				synth->offset_inline( time, delta, output );
-			}
-			time += period;
-		}
-		while ( time < end_time );
-		
-		this->wave_pos = (wave_pos - 1) & (wave_size - 1);
-	}
-	delay = time - end_time;
-}
-
-// Gb_Apu::write_osc
-
-void Gb_Apu::write_osc( int index, int reg, int data )
-{
-	reg -= index * 5;
-	Gb_Square* sq = &square2;
-	switch ( index )
-	{
-	case 0:
-		sq = &square1;
-	case 1:
-		if ( sq->write_register( reg, data ) && index == 0 )
-		{
-			square1.sweep_freq = square1.frequency();
-			if ( (regs [0] & sq->period_mask) && (regs [0] & sq->shift_mask) )
-			{
-				square1.sweep_delay = 1; // cause sweep to recalculate now
-				square1.clock_sweep();
-			}
-		}
-		break;
-	
-	case 2:
-		wave.write_register( reg, data );
-		break;
-	
-	case 3:
-		if ( noise.write_register( reg, data ) )
-			noise.bits = 0x7FFF;
-	}
-}