434 lines
11 KiB
C++
434 lines
11 KiB
C++
// Game_Music_Emu $vers. http://www.slack.net/~ant/
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#include "Music_Emu.h"
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#if !GME_DISABLE_EFFECTS
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#include "Effects_Buffer.h"
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#endif
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#include "blargg_endian.h"
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#include <string.h>
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#include <ctype.h>
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/* Copyright (C) 2003-2009 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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#ifndef GME_TYPE_LIST
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// Default list of all supported game music types (copy this to blargg_config.h
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// if you want to modify it)
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#define GME_TYPE_LIST \
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gme_ay_type,\
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gme_gbs_type,\
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gme_gym_type,\
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gme_hes_type,\
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gme_kss_type,\
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gme_nsf_type,\
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gme_nsfe_type,\
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gme_sap_type,\
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gme_sfm_type,\
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gme_sgc_type,\
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gme_spc_type,\
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gme_vgm_type,\
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gme_vgz_type
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#endif
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static gme_type_t const gme_type_list_ [] = { GME_TYPE_LIST, 0 };
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gme_type_t const* gme_type_list()
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{
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return gme_type_list_;
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}
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const char* gme_identify_header( void const* header )
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{
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switch ( get_be32( header ) )
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{
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case BLARGG_4CHAR('Z','X','A','Y'): return "AY";
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case BLARGG_4CHAR('G','B','S',0x01): return "GBS";
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case BLARGG_4CHAR('G','Y','M','X'): return "GYM";
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case BLARGG_4CHAR('H','E','S','M'): return "HES";
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case BLARGG_4CHAR('K','S','C','C'):
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case BLARGG_4CHAR('K','S','S','X'): return "KSS";
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case BLARGG_4CHAR('N','E','S','M'): return "NSF";
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case BLARGG_4CHAR('N','S','F','E'): return "NSFE";
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case BLARGG_4CHAR('S','A','P',0x0D): return "SAP";
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case BLARGG_4CHAR('S','F','M','1'): return "SFM";
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case BLARGG_4CHAR('S','G','C',0x1A): return "SGC";
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case BLARGG_4CHAR('S','N','E','S'): return "SPC";
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case BLARGG_4CHAR('V','g','m',' '): return "VGM";
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}
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return "";
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}
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static void to_uppercase( const char in [], int len, char out [] )
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{
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for ( int i = 0; i < len; i++ )
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{
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if ( !(out [i] = toupper( in [i] )) )
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return;
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}
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*out = 0; // extension too long
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}
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gme_type_t gme_identify_extension( const char extension_ [] )
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{
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char const* end = strrchr( extension_, '.' );
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if ( end )
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extension_ = end + 1;
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char extension [6];
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to_uppercase( extension_, sizeof extension, extension );
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gme_type_t const* types = gme_type_list_;
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for ( ; *types; types++ )
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if ( !strcmp( extension, (*types)->extension_ ) )
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break;
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return *types;
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}
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gme_err_t gme_identify_file( const char path [], gme_type_t* type_out )
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{
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*type_out = gme_identify_extension( path );
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// TODO: don't examine header if file has extension?
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if ( !*type_out )
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{
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char header [4];
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GME_FILE_READER in;
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RETURN_ERR( in.open( path ) );
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RETURN_ERR( in.read( header, sizeof header ) );
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*type_out = gme_identify_extension( gme_identify_header( header ) );
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}
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return blargg_ok;
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}
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gme_err_t gme_open_data( void const* data, long size, Music_Emu** out, int sample_rate )
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{
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require( (data || !size) && out );
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*out = NULL;
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gme_type_t file_type = 0;
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if ( size >= 4 )
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file_type = gme_identify_extension( gme_identify_header( data ) );
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if ( !file_type )
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return blargg_err_file_type;
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Music_Emu* emu = gme_new_emu( file_type, sample_rate );
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CHECK_ALLOC( emu );
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gme_err_t err = gme_load_data( emu, data, size );
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if ( err )
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delete emu;
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else
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*out = emu;
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return err;
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}
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gme_err_t gme_open_file( const char path [], Music_Emu** out, int sample_rate )
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{
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require( path && out );
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*out = NULL;
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GME_FILE_READER in;
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RETURN_ERR( in.open( path ) );
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char header [4];
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int header_size = 0;
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gme_type_t file_type = gme_identify_extension( path );
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if ( !file_type )
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{
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header_size = sizeof header;
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RETURN_ERR( in.read( header, sizeof header ) );
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file_type = gme_identify_extension( gme_identify_header( header ) );
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}
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if ( !file_type )
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return blargg_err_file_type;
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Music_Emu* emu = gme_new_emu( file_type, sample_rate );
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CHECK_ALLOC( emu );
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// optimization: avoids seeking/re-reading header
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Remaining_Reader rem( header, header_size, &in );
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gme_err_t err = emu->load( rem );
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in.close();
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if ( err )
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delete emu;
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else
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*out = emu;
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return err;
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}
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Music_Emu* gme_new_emu( gme_type_t type, int rate )
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{
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if ( type )
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{
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if ( rate == gme_info_only )
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return type->new_info();
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Music_Emu* gme = type->new_emu();
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if ( gme )
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{
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#if !GME_DISABLE_EFFECTS
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if ( type->flags_ & 1 )
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{
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gme->effects_buffer_ = BLARGG_NEW Simple_Effects_Buffer;
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if ( gme->effects_buffer_ )
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gme->set_buffer( gme->effects_buffer_ );
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}
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if ( !(type->flags_ & 1) || gme->effects_buffer_ )
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#endif
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{
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if ( !gme->set_sample_rate( rate ) )
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{
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check( gme->type() == type );
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return gme;
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}
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}
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delete gme;
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}
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}
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return NULL;
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}
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gme_err_t gme_load_file( Music_Emu* gme, const char path [] ) { return gme->load_file( path ); }
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gme_err_t gme_load_data( Music_Emu* gme, void const* data, long size )
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{
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Mem_File_Reader in( data, size );
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return gme->load( in );
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}
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gme_err_t gme_load_custom( Music_Emu* gme, gme_reader_t func, long size, void* data )
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{
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Callback_Reader in( func, size, data );
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return gme->load( in );
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}
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void gme_delete( Music_Emu* gme ) { delete gme; }
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gme_type_t gme_type( Music_Emu const* gme ) { return gme->type(); }
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const char* gme_warning( Music_Emu* gme ) { return gme->warning(); }
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int gme_track_count( Music_Emu const* gme ) { return gme->track_count(); }
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struct gme_info_t_ : gme_info_t
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{
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track_info_t info;
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BLARGG_DISABLE_NOTHROW
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};
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gme_err_t gme_track_info( Music_Emu const* me, gme_info_t** out, int track )
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{
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*out = NULL;
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gme_info_t_* info = BLARGG_NEW gme_info_t_;
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CHECK_ALLOC( info );
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gme_err_t err = me->track_info( &info->info, track );
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if ( err )
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{
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gme_free_info( info );
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return err;
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}
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#define COPY(name) info->name = info->info.name;
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COPY( length );
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COPY( intro_length );
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COPY( loop_length );
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info->i4 = -1;
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info->i5 = -1;
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info->i6 = -1;
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info->i7 = -1;
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info->i8 = -1;
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info->i9 = -1;
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info->i10 = -1;
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info->i11 = -1;
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info->i12 = -1;
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info->i13 = -1;
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info->i14 = -1;
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info->i15 = -1;
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info->s7 = "";
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info->s8 = "";
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info->s9 = "";
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info->s10 = "";
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info->s11 = "";
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info->s12 = "";
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info->s13 = "";
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info->s14 = "";
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info->s15 = "";
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COPY( system );
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COPY( game );
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COPY( song );
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COPY( author );
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COPY( copyright );
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COPY( comment );
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COPY( dumper );
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#undef COPY
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info->play_length = info->length;
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if ( info->play_length <= 0 )
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{
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info->play_length = info->intro_length + 2 * info->loop_length; // intro + 2 loops
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if ( info->play_length <= 0 )
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info->play_length = 150 * 1000; // 2.5 minutes
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}
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*out = info;
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return blargg_ok;
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}
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void gme_free_info( gme_info_t* info )
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{
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delete STATIC_CAST(gme_info_t_*,info);
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}
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void* gme_user_data ( Music_Emu const* gme ) { return gme->user_data(); }
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void gme_set_user_data ( Music_Emu* gme, void* new_user_data ) { gme->set_user_data( new_user_data ); }
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void gme_set_user_cleanup(Music_Emu* gme, gme_user_cleanup_t func ){ gme->set_user_cleanup( func ); }
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gme_err_t gme_start_track ( Music_Emu* gme, int index ) { return gme->start_track( index ); }
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gme_err_t gme_play ( Music_Emu* gme, int n, short p [] ) { return gme->play( n, p ); }
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void gme_set_fade ( Music_Emu* gme, int start_msec ) { gme->set_fade( start_msec ); }
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gme_bool gme_track_ended ( Music_Emu const* gme ) { return gme->track_ended(); }
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int gme_tell ( Music_Emu const* gme ) { return gme->tell(); }
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gme_err_t gme_seek ( Music_Emu* gme, int msec ) { return gme->seek( msec ); }
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int gme_voice_count ( Music_Emu const* gme ) { return gme->voice_count(); }
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void gme_ignore_silence ( Music_Emu* gme, gme_bool disable ) { gme->ignore_silence( disable != 0 ); }
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void gme_set_tempo ( Music_Emu* gme, double t ) { gme->set_tempo( t ); }
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void gme_mute_voice ( Music_Emu* gme, int index, gme_bool mute ){ gme->mute_voice( index, mute != 0 ); }
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void gme_mute_voices ( Music_Emu* gme, int mask ) { gme->mute_voices( mask ); }
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void gme_set_equalizer ( Music_Emu* gme, gme_equalizer_t const* eq ) { gme->set_equalizer( *eq ); }
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void gme_equalizer ( Music_Emu const* gme, gme_equalizer_t* o ) { *o = gme->equalizer(); }
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const char* gme_voice_name ( Music_Emu const* gme, int i ) { return gme->voice_name( i ); }
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void gme_effects( Music_Emu const* gme, gme_effects_t* out )
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{
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static gme_effects_t const zero = { 0, 0, 0,0,0,0,0,0, 0, 0, 0,0,0,0,0,0 };
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*out = zero;
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#if !GME_DISABLE_EFFECTS
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{
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Simple_Effects_Buffer* b = STATIC_CAST(Simple_Effects_Buffer*,gme->effects_buffer_);
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if ( b )
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{
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out->enabled = b->config().enabled;
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out->echo = b->config().echo;
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out->stereo = b->config().stereo;
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out->surround = b->config().surround;
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}
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}
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#endif
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}
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void gme_set_effects( Music_Emu* gme, gme_effects_t const* in )
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{
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#if !GME_DISABLE_EFFECTS
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{
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Simple_Effects_Buffer* b = STATIC_CAST(Simple_Effects_Buffer*,gme->effects_buffer_);
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if ( b )
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{
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b->config().enabled = false;
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if ( in )
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{
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b->config().enabled = in->enabled;
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b->config().echo = in->echo;
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b->config().stereo = in->stereo;
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b->config().surround = in->surround;
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}
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b->apply_config();
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}
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}
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#endif
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}
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void gme_set_stereo_depth( Music_Emu* gme, double depth )
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{
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#if !GME_DISABLE_EFFECTS
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{
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if ( gme->effects_buffer_ )
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{
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gme_effects_t cfg;
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gme_effects( gme, &cfg );
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cfg.enabled = (depth > 0.0);
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cfg.echo = depth;
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cfg.stereo = depth;
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cfg.surround = true;
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gme_set_effects( gme, &cfg );
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}
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}
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#endif
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}
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#define ENTRY( name ) { blargg_err_##name, gme_err_##name }
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static blargg_err_to_code_t const gme_codes [] =
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{
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ENTRY( generic ),
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ENTRY( memory ),
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ENTRY( caller ),
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ENTRY( internal ),
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ENTRY( limitation ),
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ENTRY( file_missing ),
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ENTRY( file_read ),
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ENTRY( file_io ),
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ENTRY( file_eof ),
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ENTRY( file_type ),
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ENTRY( file_feature ),
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ENTRY( file_corrupt ),
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{ 0, -1 }
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};
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#undef ENTRY
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static int err_code( gme_err_t err )
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{
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return blargg_err_to_code( err, gme_codes );
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}
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int gme_err_code( gme_err_t err )
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{
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int code = err_code( err );
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return (code >= 0 ? code : gme_err_generic);
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}
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gme_err_t gme_code_to_err( int code )
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{
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return blargg_code_to_err( code, gme_codes );
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}
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const char* gme_err_details( gme_err_t err )
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{
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// If we don't have error code assigned, return entire string
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return (err_code( err ) >= 0 ? blargg_err_details( err ) : blargg_err_str( err ));
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}
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const char* gme_err_str( gme_err_t err )
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{
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return blargg_err_str( err );
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}
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