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git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@1584 0778d3d1-df1d-0410-868b-ea421aaaa00d
84 lines
2.0 KiB
C++
84 lines
2.0 KiB
C++
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// Gb_Snd_Emu 0.1.4. http://www.slack.net/~ant/libs/
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#include "Basic_Gb_Apu.h"
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/* Copyright (C) 2003-2005 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
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more details. You should have received a copy of the GNU Lesser General
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Public License along with this module; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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gb_time_t const frame_length = 70224;
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Basic_Gb_Apu::Basic_Gb_Apu()
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{
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time = 0;
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// Adjust frequency equalization to make it sound like a tiny speaker
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apu.treble_eq( -20.0 ); // lower values muffle it more
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buf.bass_freq( 461 ); // higher values simulate smaller speaker
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}
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Basic_Gb_Apu::~Basic_Gb_Apu()
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{
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}
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blargg_err_t Basic_Gb_Apu::set_sample_rate( long rate )
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{
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apu.output( buf.center(), buf.left(), buf.right() );
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buf.clock_rate( 4194304 );
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return buf.set_sample_rate( rate );
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}
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void Basic_Gb_Apu::write_register( gb_addr_t addr, int data )
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{
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apu.write_register( clock(), addr, data );
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}
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int Basic_Gb_Apu::read_register( gb_addr_t addr )
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{
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return apu.read_register( clock(), addr );
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}
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void Basic_Gb_Apu::end_frame()
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{
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time = 0;
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bool stereo = apu.end_frame( frame_length );
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buf.end_frame( frame_length, stereo );
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}
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long Basic_Gb_Apu::samples_avail() const
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{
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return buf.samples_avail();
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}
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long Basic_Gb_Apu::read_samples( sample_t* out, long count )
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{
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return buf.read_samples( out, count );
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}
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//added by 589 --->
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void Basic_Gb_Apu::reset()
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{
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apu.reset();
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}
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void Basic_Gb_Apu::treble_eq( const blip_eq_t& eq )
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{
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apu.treble_eq( eq );
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}
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void Basic_Gb_Apu::bass_freq( int bf )
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{
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buf.bass_freq( bf );
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}
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// <---
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