1 files changed, 0 insertions, 446 deletions
diff --git a/plugins/gme/game-music-emu-0.5.5/gme/Blip_Buffer.cpp b/plugins/gme/game-music-emu-0.5.5/gme/Blip_Buffer.cpp
deleted file mode 100644
index 9dc89ea8..00000000
--- a/plugins/gme/game-music-emu-0.5.5/gme/Blip_Buffer.cpp
+++ /dev/null
@@ -1,446 +0,0 @@
-// Blip_Buffer 0.4.1. http://www.slack.net/~ant/
-
-#include "Blip_Buffer.h"
-
-#include <assert.h>
-#include <limits.h>
-#include <string.h>
-#include <stdlib.h>
-#include <math.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 */
-
-#ifdef BLARGG_ENABLE_OPTIMIZER
-	#include BLARGG_ENABLE_OPTIMIZER
-#endif
-
-int const silent_buf_size = 1; // size used for Silent_Blip_Buffer
-
-Blip_Buffer::Blip_Buffer()
-{
-	factor_       = (blip_ulong)-1 / 2;
-	offset_       = 0;
-	buffer_       = 0;
-	buffer_size_  = 0;
-	sample_rate_  = 0;
-	reader_accum_ = 0;
-	bass_shift_   = 0;
-	clock_rate_   = 0;
-	bass_freq_    = 16;
-	length_       = 0;
-	
-	// assumptions code makes about implementation-defined features
-	#ifndef NDEBUG
-		// right shift of negative value preserves sign
-		buf_t_ i = -0x7FFFFFFE;
-		assert( (i >> 1) == -0x3FFFFFFF );
-		
-		// casting to short truncates to 16 bits and sign-extends
-		i = 0x18000;
-		assert( (short) i == -0x8000 );
-	#endif
-}
-
-Blip_Buffer::~Blip_Buffer()
-{
-	if ( buffer_size_ != silent_buf_size )
-		free( buffer_ );
-}
-
-Silent_Blip_Buffer::Silent_Blip_Buffer()
-{
-	factor_      = 0;
-	buffer_      = buf;
-	buffer_size_ = silent_buf_size;
-	memset( buf, 0, sizeof buf ); // in case machine takes exception for signed overflow
-}
-
-void Blip_Buffer::clear( int entire_buffer )
-{
-	offset_      = 0;
-	reader_accum_ = 0;
-	modified_    = 0;
-	if ( buffer_ )
-	{
-		long count = (entire_buffer ? buffer_size_ : samples_avail());
-		memset( buffer_, 0, (count + blip_buffer_extra_) * sizeof (buf_t_) );
-	}
-}
-
-Blip_Buffer::blargg_err_t Blip_Buffer::set_sample_rate( long new_rate, int msec )
-{
-	if ( buffer_size_ == silent_buf_size )
-	{
-		assert( 0 );
-		return "Internal (tried to resize Silent_Blip_Buffer)";
-	}
-	
-	// start with maximum length that resampled time can represent
-	long new_size = (UINT_MAX >> BLIP_BUFFER_ACCURACY) - blip_buffer_extra_ - 64;
-	if ( msec != blip_max_length )
-	{
-		long s = (new_rate * (msec + 1) + 999) / 1000;
-		if ( s < new_size )
-			new_size = s;
-		else
-			assert( 0 ); // fails if requested buffer length exceeds limit
-	}
-	
-	if ( buffer_size_ != new_size )
-	{
-		void* p = realloc( buffer_, (new_size + blip_buffer_extra_) * sizeof *buffer_ );
-		if ( !p )
-			return "Out of memory";
-		buffer_ = (buf_t_*) p;
-	}
-	
-	buffer_size_ = new_size;
-	assert( buffer_size_ != silent_buf_size );
-	
-	// update things based on the sample rate
-	sample_rate_ = new_rate;
-	length_ = new_size * 1000 / new_rate - 1;
-	if ( msec )
-		assert( length_ == msec ); // ensure length is same as that passed in
-	if ( clock_rate_ )
-		clock_rate( clock_rate_ );
-	bass_freq( bass_freq_ );
-	
-	clear();
-	
-	return 0; // success
-}
-
-blip_resampled_time_t Blip_Buffer::clock_rate_factor( long rate ) const
-{
-	double ratio = (double) sample_rate_ / rate;
-	blip_long factor = (blip_long) floor( ratio * (1L << BLIP_BUFFER_ACCURACY) + 0.5 );
-	assert( factor > 0 || !sample_rate_ ); // fails if clock/output ratio is too large
-	return (blip_resampled_time_t) factor;
-}
-
-void Blip_Buffer::bass_freq( int freq )
-{
-	bass_freq_ = freq;
-	int shift = 31;
-	if ( freq > 0 )
-	{
-		shift = 13;
-		long f = (freq << 16) / sample_rate_;
-		while ( (f >>= 1) && --shift ) { }
-	}
-	bass_shift_ = shift;
-}
-
-void Blip_Buffer::end_frame( blip_time_t t )
-{
-	offset_ += t * factor_;
-	assert( samples_avail() <= (long) buffer_size_ ); // time outside buffer length
-}
-
-void Blip_Buffer::remove_silence( long count )
-{
-	assert( count <= samples_avail() ); // tried to remove more samples than available
-	offset_ -= (blip_resampled_time_t) count << BLIP_BUFFER_ACCURACY;
-}
-
-long Blip_Buffer::count_samples( blip_time_t t ) const
-{
-	unsigned long last_sample  = resampled_time( t ) >> BLIP_BUFFER_ACCURACY;
-	unsigned long first_sample = offset_ >> BLIP_BUFFER_ACCURACY;
-	return (long) (last_sample - first_sample);
-}
-
-blip_time_t Blip_Buffer::count_clocks( long count ) const
-{
-	if ( !factor_ )
-	{
-		assert( 0 ); // sample rate and clock rates must be set first
-		return 0;
-	}
-	
-	if ( count > buffer_size_ )
-		count = buffer_size_;
-	blip_resampled_time_t time = (blip_resampled_time_t) count << BLIP_BUFFER_ACCURACY;
-	return (blip_time_t) ((time - offset_ + factor_ - 1) / factor_);
-}
-
-void Blip_Buffer::remove_samples( long count )
-{
-	if ( count )
-	{
-		remove_silence( count );
-		
-		// copy remaining samples to beginning and clear old samples
-		long remain = samples_avail() + blip_buffer_extra_;
-		memmove( buffer_, buffer_ + count, remain * sizeof *buffer_ );
-		memset( buffer_ + remain, 0, count * sizeof *buffer_ );
-	}
-}
-
-// Blip_Synth_
-
-Blip_Synth_Fast_::Blip_Synth_Fast_()
-{
-	buf = 0;
-	last_amp = 0;
-	delta_factor = 0;
-}
-
-void Blip_Synth_Fast_::volume_unit( double new_unit )
-{
-	delta_factor = int (new_unit * (1L << blip_sample_bits) + 0.5);
-}
-
-#if !BLIP_BUFFER_FAST
-
-Blip_Synth_::Blip_Synth_( short* p, int w ) :
-	impulses( p ),
-	width( w )
-{
-	volume_unit_ = 0.0;
-	kernel_unit = 0;
-	buf = 0;
-	last_amp = 0;
-	delta_factor = 0;
-}
-
-#undef PI
-#define PI 3.1415926535897932384626433832795029
-
-static void gen_sinc( float* out, int count, double oversample, double treble, double cutoff )
-{
-	if ( cutoff >= 0.999 )
-		cutoff = 0.999;
-	
-	if ( treble < -300.0 )
-		treble = -300.0;
-	if ( treble > 5.0 )
-		treble = 5.0;
-	
-	double const maxh = 4096.0;
-	double const rolloff = pow( 10.0, 1.0 / (maxh * 20.0) * treble / (1.0 - cutoff) );
-	double const pow_a_n = pow( rolloff, maxh - maxh * cutoff );
-	double const to_angle = PI / 2 / maxh / oversample;
-	for ( int i = 0; i < count; i++ )
-	{
-		double angle = ((i - count) * 2 + 1) * to_angle;
-		double c = rolloff * cos( (maxh - 1.0) * angle ) - cos( maxh * angle );
-		double cos_nc_angle = cos( maxh * cutoff * angle );
-		double cos_nc1_angle = cos( (maxh * cutoff - 1.0) * angle );
-		double cos_angle = cos( angle );
-		
-		c = c * pow_a_n - rolloff * cos_nc1_angle + cos_nc_angle;
-		double d = 1.0 + rolloff * (rolloff - cos_angle - cos_angle);
-		double b = 2.0 - cos_angle - cos_angle;
-		double a = 1.0 - cos_angle - cos_nc_angle + cos_nc1_angle;
-		
-		out [i] = (float) ((a * d + c * b) / (b * d)); // a / b + c / d
-	}
-}
-
-void blip_eq_t::generate( float* out, int count ) const
-{
-	// lower cutoff freq for narrow kernels with their wider transition band
-	// (8 points->1.49, 16 points->1.15)
-	double oversample = blip_res * 2.25 / count + 0.85;
-	double half_rate = sample_rate * 0.5;
-	if ( cutoff_freq )
-		oversample = half_rate / cutoff_freq;
-	double cutoff = rolloff_freq * oversample / half_rate;
-	
-	gen_sinc( out, count, blip_res * oversample, treble, cutoff );
-	
-	// apply (half of) hamming window
-	double to_fraction = PI / (count - 1);
-	for ( int i = count; i--; )
-		out [i] *= 0.54f - 0.46f * (float) cos( i * to_fraction );
-}
-
-void Blip_Synth_::adjust_impulse()
-{
-	// sum pairs for each phase and add error correction to end of first half
-	int const size = impulses_size();
-	for ( int p = blip_res; p-- >= blip_res / 2; )
-	{
-		int p2 = blip_res - 2 - p;
-		long error = kernel_unit;
-		for ( int i = 1; i < size; i += blip_res )
-		{
-			error -= impulses [i + p ];
-			error -= impulses [i + p2];
-		}
-		if ( p == p2 )
-			error /= 2; // phase = 0.5 impulse uses same half for both sides
-		impulses [size - blip_res + p] += (short) error;
-		//printf( "error: %ld\n", error );
-	}
-	
-	//for ( int i = blip_res; i--; printf( "\n" ) )
-	//  for ( int j = 0; j < width / 2; j++ )
-	//      printf( "%5ld,", impulses [j * blip_res + i + 1] );
-}
-
-void Blip_Synth_::treble_eq( blip_eq_t const& eq )
-{
-	float fimpulse [blip_res / 2 * (blip_widest_impulse_ - 1) + blip_res * 2];
-	
-	int const half_size = blip_res / 2 * (width - 1);
-	eq.generate( &fimpulse [blip_res], half_size );
-	
-	int i;
-	
-	// need mirror slightly past center for calculation
-	for ( i = blip_res; i--; )
-		fimpulse [blip_res + half_size + i] = fimpulse [blip_res + half_size - 1 - i];
-	
-	// starts at 0
-	for ( i = 0; i < blip_res; i++ )
-		fimpulse [i] = 0.0f;
-	
-	// find rescale factor
-	double total = 0.0;
-	for ( i = 0; i < half_size; i++ )
-		total += fimpulse [blip_res + i];
-	
-	//double const base_unit = 44800.0 - 128 * 18; // allows treble up to +0 dB
-	//double const base_unit = 37888.0; // allows treble to +5 dB
-	double const base_unit = 32768.0; // necessary for blip_unscaled to work
-	double rescale = base_unit / 2 / total;
-	kernel_unit = (long) base_unit;
-	
-	// integrate, first difference, rescale, convert to int
-	double sum = 0.0;
-	double next = 0.0;
-	int const impulses_size = this->impulses_size();
-	for ( i = 0; i < impulses_size; i++ )
-	{
-		impulses [i] = (short) floor( (next - sum) * rescale + 0.5 );
-		sum += fimpulse [i];
-		next += fimpulse [i + blip_res];
-	}
-	adjust_impulse();
-	
-	// volume might require rescaling
-	double vol = volume_unit_;
-	if ( vol )
-	{
-		volume_unit_ = 0.0;
-		volume_unit( vol );
-	}
-}
-
-void Blip_Synth_::volume_unit( double new_unit )
-{
-	if ( new_unit != volume_unit_ )
-	{
-		// use default eq if it hasn't been set yet
-		if ( !kernel_unit )
-			treble_eq( -8.0 );
-		
-		volume_unit_ = new_unit;
-		double factor = new_unit * (1L << blip_sample_bits) / kernel_unit;
-		
-		if ( factor > 0.0 )
-		{
-			int shift = 0;
-			
-			// if unit is really small, might need to attenuate kernel
-			while ( factor < 2.0 )
-			{
-				shift++;
-				factor *= 2.0;
-			}
-			
-			if ( shift )
-			{
-				kernel_unit >>= shift;
-				assert( kernel_unit > 0 ); // fails if volume unit is too low
-				
-				// keep values positive to avoid round-towards-zero of sign-preserving
-				// right shift for negative values
-				long offset = 0x8000 + (1 << (shift - 1));
-				long offset2 = 0x8000 >> shift;
-				for ( int i = impulses_size(); i--; )
-					impulses [i] = (short) (((impulses [i] + offset) >> shift) - offset2);
-				adjust_impulse();
-			}
-		}
-		delta_factor = (int) floor( factor + 0.5 );
-		//printf( "delta_factor: %d, kernel_unit: %d\n", delta_factor, kernel_unit );
-	}
-}
-#endif
-
-long Blip_Buffer::read_samples( blip_sample_t* BLIP_RESTRICT out, long max_samples, int stereo )
-{
-	long count = samples_avail();
-	if ( count > max_samples )
-		count = max_samples;
-	
-	if ( count )
-	{
-		int const bass = BLIP_READER_BASS( *this );
-		BLIP_READER_BEGIN( reader, *this );
-		
-		if ( !stereo )
-		{
-			for ( blip_long n = count; n; --n )
-			{
-				blip_long s = BLIP_READER_READ( reader );
-				if ( (blip_sample_t) s != s )
-					s = 0x7FFF - (s >> 24);
-				*out++ = (blip_sample_t) s;
-				BLIP_READER_NEXT( reader, bass );
-			}
-		}
-		else
-		{
-			for ( blip_long n = count; n; --n )
-			{
-				blip_long s = BLIP_READER_READ( reader );
-				if ( (blip_sample_t) s != s )
-					s = 0x7FFF - (s >> 24);
-				*out = (blip_sample_t) s;
-				out += 2;
-				BLIP_READER_NEXT( reader, bass );
-			}
-		}
-		BLIP_READER_END( reader, *this );
-		
-		remove_samples( count );
-	}
-	return count;
-}
-
-void Blip_Buffer::mix_samples( blip_sample_t const* in, long count )
-{
-	if ( buffer_size_ == silent_buf_size )
-	{
-		assert( 0 );
-		return;
-	}
-	
-	buf_t_* out = buffer_ + (offset_ >> BLIP_BUFFER_ACCURACY) + blip_widest_impulse_ / 2;
-	
-	int const sample_shift = blip_sample_bits - 16;
-	int prev = 0;
-	while ( count-- )
-	{
-		blip_long s = (blip_long) *in++ << sample_shift;
-		*out += s - prev;
-		prev = s;
-		++out;
-	}
-	*out -= prev;
-}
-