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718112a8fe
Currently none of these is being used, but eventually they will, once more code gets ported over. So it's better to have them right away and avoid editing the project file too much, only to revert that later.
420 lines
12 KiB
C++
420 lines
12 KiB
C++
// Game_Music_Emu https://bitbucket.org/mpyne/game-music-emu/
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#include "Music_Emu.h"
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#include "gme_types.h"
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#if !GME_DISABLE_STEREO_DEPTH
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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) 2003-2006 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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BLARGG_EXPORT gme_type_t const* gme_type_list()
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{
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static gme_type_t const gme_type_list_ [] = {
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#ifdef GME_TYPE_LIST
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GME_TYPE_LIST,
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#else
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#ifdef USE_GME_AY
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gme_ay_type,
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#endif
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#ifdef USE_GME_GBS
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gme_gbs_type,
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#endif
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#ifdef USE_GME_GYM
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gme_gym_type,
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#endif
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#ifdef USE_GME_HES
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gme_hes_type,
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#endif
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#ifdef USE_GME_KSS
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gme_kss_type,
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#endif
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#ifdef USE_GME_NSF
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gme_nsf_type,
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#endif
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#ifdef USE_GME_NSFE
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gme_nsfe_type,
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#endif
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#ifdef USE_GME_SAP
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gme_sap_type,
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#endif
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#ifdef USE_GME_SPC
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gme_spc_type,
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#endif
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#ifdef USE_GME_VGM
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gme_vgm_type,
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gme_vgz_type,
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#endif
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#endif
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0
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};
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return gme_type_list_;
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}
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BLARGG_EXPORT 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','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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if (get_be16(header) == BLARGG_2CHAR(0x1F, 0x8B))
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return "VGZ";
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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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BLARGG_EXPORT 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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for ( gme_type_t const* types = gme_type_list(); *types; types++ )
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if ( !strcmp( extension, (*types)->extension_ ) )
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return *types;
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return 0;
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}
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BLARGG_EXPORT const char *gme_type_extension( gme_type_t music_type )
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{
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const gme_type_t_ *const music_typeinfo = static_cast<const gme_type_t_ *>( music_type );
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if ( music_type )
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return music_typeinfo->extension_;
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return "";
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}
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BLARGG_EXPORT 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 0;
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}
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BLARGG_EXPORT 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 = 0;
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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 gme_wrong_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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BLARGG_EXPORT 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 = 0;
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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 gme_wrong_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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BLARGG_EXPORT void gme_set_autoload_playback_limit( Music_Emu *emu, int do_autoload_limit )
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{
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emu->set_autoload_playback_limit( do_autoload_limit != 0 );
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}
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BLARGG_EXPORT int gme_autoload_playback_limit( Music_Emu *const emu )
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{
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return emu->autoload_playback_limit();
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}
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// Used to implement gme_new_emu and gme_new_emu_multi_channel
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Music_Emu* gme_internal_new_emu_( gme_type_t type, int rate, bool multi_channel )
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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* me = type->new_emu();
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if ( me )
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{
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#if !GME_DISABLE_STEREO_DEPTH
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me->set_multi_channel( multi_channel );
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if ( type->flags_ & 1 )
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{
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if ( me->multi_channel() )
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{
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me->effects_buffer = BLARGG_NEW Effects_Buffer(8);
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}
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else
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{
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me->effects_buffer = BLARGG_NEW Effects_Buffer(1);
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}
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if ( me->effects_buffer )
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me->set_buffer( me->effects_buffer );
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}
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if ( !(type->flags_ & 1) || me->effects_buffer )
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#endif
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{
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if ( !me->set_sample_rate( rate ) )
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{
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check( me->type() == type );
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return me;
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}
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}
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delete me;
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}
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}
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return 0;
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}
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BLARGG_EXPORT Music_Emu* gme_new_emu( gme_type_t type, int rate )
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{
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return gme_internal_new_emu_( type, rate, false /* no multichannel */);
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}
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BLARGG_EXPORT Music_Emu* gme_new_emu_multi_channel( gme_type_t type, int rate )
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{
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// multi-channel emulator (if possible, not all emu types support multi-channel)
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return gme_internal_new_emu_( type, rate, true /* multichannel */);
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}
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BLARGG_EXPORT gme_err_t gme_load_file( Music_Emu* me, const char* path ) { return me->load_file( path ); }
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BLARGG_EXPORT gme_err_t gme_load_data( Music_Emu* me, void const* data, long size )
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{
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Mem_File_Reader in( data, size );
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return me->load( in );
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}
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BLARGG_EXPORT gme_err_t gme_load_custom( Music_Emu* me, 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 me->load( in );
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}
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BLARGG_EXPORT void gme_delete( Music_Emu* me ) { delete me; }
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BLARGG_EXPORT gme_type_t gme_type( Music_Emu const* me ) { return me->type(); }
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BLARGG_EXPORT const char* gme_warning( Music_Emu* me ) { return me->warning(); }
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BLARGG_EXPORT int gme_track_count( Music_Emu const* me ) { return me->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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BLARGG_EXPORT 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 0;
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}
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BLARGG_EXPORT 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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BLARGG_EXPORT void gme_set_stereo_depth( Music_Emu* me, double depth )
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{
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#if !GME_DISABLE_STEREO_DEPTH
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if ( me->effects_buffer )
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STATIC_CAST(Effects_Buffer*,me->effects_buffer)->set_depth( depth );
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#endif
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}
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BLARGG_EXPORT void* gme_user_data ( Music_Emu const* me ) { return me->user_data(); }
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BLARGG_EXPORT void gme_set_user_data ( Music_Emu* me, void* new_user_data ) { me->set_user_data( new_user_data ); }
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BLARGG_EXPORT void gme_set_user_cleanup(Music_Emu* me, gme_user_cleanup_t func ) { me->set_user_cleanup( func ); }
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BLARGG_EXPORT gme_err_t gme_start_track ( Music_Emu* me, int index ) { return me->start_track( index ); }
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BLARGG_EXPORT gme_err_t gme_play ( Music_Emu* me, int n, short* p ) { return me->play( n, p ); }
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BLARGG_EXPORT void gme_set_fade ( Music_Emu* me, int start_msec ) { me->set_fade( start_msec ); }
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BLARGG_EXPORT int gme_track_ended ( Music_Emu const* me ) { return me->track_ended(); }
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BLARGG_EXPORT int gme_tell ( Music_Emu const* me ) { return me->tell(); }
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BLARGG_EXPORT int gme_tell_samples ( Music_Emu const* me ) { return me->tell_samples(); }
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BLARGG_EXPORT gme_err_t gme_seek ( Music_Emu* me, int msec ) { return me->seek( msec ); }
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BLARGG_EXPORT gme_err_t gme_seek_samples ( Music_Emu* me, int n ) { return me->seek_samples( n ); }
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BLARGG_EXPORT int gme_voice_count ( Music_Emu const* me ) { return me->voice_count(); }
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BLARGG_EXPORT void gme_ignore_silence ( Music_Emu* me, int disable ) { me->ignore_silence( disable != 0 ); }
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BLARGG_EXPORT void gme_set_tempo ( Music_Emu* me, double t ) { me->set_tempo( t ); }
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BLARGG_EXPORT void gme_mute_voice ( Music_Emu* me, int index, int mute ) { me->mute_voice( index, mute != 0 ); }
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BLARGG_EXPORT void gme_mute_voices ( Music_Emu* me, int mask ) { me->mute_voices( mask ); }
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BLARGG_EXPORT void gme_enable_accuracy( Music_Emu* me, int enabled ) { me->enable_accuracy( enabled ); }
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BLARGG_EXPORT void gme_clear_playlist ( Music_Emu* me ) { me->clear_playlist(); }
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BLARGG_EXPORT int gme_type_multitrack( gme_type_t t ) { return t->track_count != 1; }
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BLARGG_EXPORT int gme_multi_channel ( Music_Emu const* me ) { return me->multi_channel(); }
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BLARGG_EXPORT void gme_set_equalizer ( Music_Emu* me, gme_equalizer_t const* eq )
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{
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Music_Emu::equalizer_t e = me->equalizer();
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e.treble = eq->treble;
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e.bass = eq->bass;
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me->set_equalizer( e );
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}
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BLARGG_EXPORT void gme_equalizer( Music_Emu const* me, gme_equalizer_t* out )
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{
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gme_equalizer_t e = gme_equalizer_t(); // Default-init all fields to 0.0f
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e.treble = me->equalizer().treble;
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e.bass = me->equalizer().bass;
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*out = e;
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}
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BLARGG_EXPORT const char* gme_voice_name( Music_Emu const* me, int i )
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{
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assert( (unsigned) i < (unsigned) me->voice_count() );
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return me->voice_names() [i];
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}
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BLARGG_EXPORT const char* gme_type_system( gme_type_t type )
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{
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assert( type );
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return type->system;
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}
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