diff options
Diffstat (limited to 'plugins/gme/Game_Music_Emu-0.5.2/gme/gme.cpp')
| -rw-r--r-- | plugins/gme/Game_Music_Emu-0.5.2/gme/gme.cpp | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/plugins/gme/Game_Music_Emu-0.5.2/gme/gme.cpp b/plugins/gme/Game_Music_Emu-0.5.2/gme/gme.cpp new file mode 100644 index 00000000..d6cebfa8 --- /dev/null +++ b/plugins/gme/Game_Music_Emu-0.5.2/gme/gme.cpp @@ -0,0 +1,256 @@ +// Game_Music_Emu 0.5.2. http://www.slack.net/~ant/ + +#include "Music_Emu.h" + +#if !GME_DISABLE_STEREO_DEPTH +#include "Effects_Buffer.h" +#endif +#include "blargg_endian.h" +#include <string.h> +#include <ctype.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" + +#ifndef GME_TYPE_LIST + +// Default list of all supported game music types (copy this to blargg_config.h +// if you want to modify it) +#define GME_TYPE_LIST \ + gme_ay_type,\ + gme_gbs_type,\ + gme_gym_type,\ + gme_hes_type,\ + gme_kss_type,\ + gme_nsf_type,\ + gme_nsfe_type,\ + gme_sap_type,\ + gme_spc_type,\ + gme_vgm_type,\ + gme_vgz_type + +#endif + +static gme_type_t const gme_type_list_ [] = { GME_TYPE_LIST, 0 }; + +gme_type_t const* gme_type_list() +{ + return gme_type_list_; +} + +const char* gme_identify_header( void const* header ) +{ + switch ( get_be32( header ) ) + { + case BLARGG_4CHAR('Z','X','A','Y'): return "AY"; + case BLARGG_4CHAR('G','B','S',0x01): return "GBS"; + case BLARGG_4CHAR('G','Y','M','X'): return "GYM"; + case BLARGG_4CHAR('H','E','S','M'): return "HES"; + case BLARGG_4CHAR('K','S','C','C'): + case BLARGG_4CHAR('K','S','S','X'): return "KSS"; + case BLARGG_4CHAR('N','E','S','M'): return "NSF"; + case BLARGG_4CHAR('N','S','F','E'): return "NSFE"; + case BLARGG_4CHAR('S','A','P',0x0D): return "SAP"; + case BLARGG_4CHAR('S','N','E','S'): return "SPC"; + case BLARGG_4CHAR('V','g','m',' '): return "VGM"; + } + return ""; +} + +static void to_uppercase( const char* in, int len, char* out ) +{ + for ( int i = 0; i < len; i++ ) + { + if ( !(out [i] = toupper( in [i] )) ) + return; + } + *out = 0; // extension too long +} + +gme_type_t gme_identify_extension( const char* extension_ ) +{ + char const* end = strrchr( extension_, '.' ); + if ( end ) + extension_ = end + 1; + + char extension [6]; + to_uppercase( extension_, sizeof extension, extension ); + + for ( gme_type_t const* types = gme_type_list_; *types; types++ ) + if ( !strcmp( extension, (*types)->extension_ ) ) + return *types; + return 0; +} + +gme_err_t gme_identify_file( const char* path, gme_type_t* type_out ) +{ + *type_out = gme_identify_extension( path ); + // TODO: don't examine header if file has extension? + if ( !*type_out ) + { + char header [4]; + GME_FILE_READER in; + RETURN_ERR( in.open( path ) ); + RETURN_ERR( in.read( header, sizeof header ) ); + *type_out = gme_identify_extension( gme_identify_header( header ) ); + } + return 0; +} + +gme_err_t gme_open_data( void const* data, long size, Music_Emu** out, long sample_rate ) +{ + require( (data || !size) && out ); + *out = 0; + + gme_type_t file_type = 0; + if ( size >= 4 ) + file_type = gme_identify_extension( gme_identify_header( data ) ); + if ( !file_type ) + return gme_wrong_file_type; + + Music_Emu* emu = gme_new_emu( file_type, sample_rate ); + CHECK_ALLOC( emu ); + + gme_err_t err = gme_load_data( emu, data, size ); + + if ( err ) + delete emu; + else + *out = emu; + + return err; +} + +gme_err_t gme_open_file( const char* path, Music_Emu** out, long sample_rate ) +{ + require( path && out ); + *out = 0; + + GME_FILE_READER in; + RETURN_ERR( in.open( path ) ); + + char header [4]; + int header_size = 0; + + gme_type_t file_type = gme_identify_extension( path ); + if ( !file_type ) + { + header_size = sizeof header; + RETURN_ERR( in.read( header, sizeof header ) ); + file_type = gme_identify_extension( gme_identify_header( header ) ); + } + if ( !file_type ) + return gme_wrong_file_type; + + Music_Emu* emu = gme_new_emu( file_type, sample_rate ); + CHECK_ALLOC( emu ); + + // optimization: avoids seeking/re-reading header + Remaining_Reader rem( header, header_size, &in ); + gme_err_t err = emu->load( rem ); + in.close(); + + if ( err ) + delete emu; + else + *out = emu; + + return err; +} + +Music_Emu* gme_new_emu( gme_type_t type, long rate ) +{ + if ( type ) + { + if ( rate == gme_info_only ) + return type->new_info(); + + Music_Emu* me = type->new_emu(); + if ( me ) + { + #if !GME_DISABLE_STEREO_DEPTH + if ( type->flags_ & 1 ) + { + me->effects_buffer = BLARGG_NEW Effects_Buffer; + if ( me->effects_buffer ) + me->set_buffer( me->effects_buffer ); + } + + if ( !(type->flags_ & 1) || me->effects_buffer ) + #endif + { + if ( !me->set_sample_rate( rate ) ) + { + check( me->type() == type ); + return me; + } + } + delete me; + } + } + return 0; +} + +gme_err_t gme_load_file( Music_Emu* me, const char* path ) { return me->load_file( path ); } + +gme_err_t gme_load_data( Music_Emu* me, void const* data, long size ) +{ + Mem_File_Reader in( data, size ); + return me->load( in ); +} + +gme_err_t gme_load_custom( Music_Emu* me, gme_reader_t func, long size, void* data ) +{ + Callback_Reader in( func, size, data ); + return me->load( in ); +} + +void gme_delete( Music_Emu* me ) { delete me; } + +gme_type_t gme_type( Music_Emu const* me ) { return me->type(); } + +const char* gme_warning( Music_Emu* me ) { return me->warning(); } + +int gme_track_count( Music_Emu const* me ) { return me->track_count(); } + +const char* gme_track_info( Music_Emu const* me, track_info_t* out, int track ) +{ + return me->track_info( out, track ); +} + +void gme_set_stereo_depth( Music_Emu* me, double depth ) +{ +#if !GME_DISABLE_STEREO_DEPTH + if ( me->effects_buffer ) + STATIC_CAST(Effects_Buffer*,me->effects_buffer)->set_depth( depth ); +#endif +} + +void* gme_user_data ( Music_Emu const* me ) { return me->user_data(); } +void gme_set_user_data ( Music_Emu* me, void* new_user_data ) { me->set_user_data( new_user_data ); } +void gme_set_user_cleanup(Music_Emu* me, gme_user_cleanup_t func ) { me->set_user_cleanup( func ); } + +gme_err_t gme_start_track ( Music_Emu* me, int index ) { return me->start_track( index ); } +gme_err_t gme_play ( Music_Emu* me, long n, short* p ) { return me->play( n, p ); } +void gme_set_fade ( Music_Emu* me, long start_msec ) { me->set_fade( start_msec ); } +int gme_track_ended ( Music_Emu const* me ) { return me->track_ended(); } +long gme_tell ( Music_Emu const* me ) { return me->tell(); } +gme_err_t gme_seek ( Music_Emu* me, long msec ) { return me->seek( msec ); } +int gme_voice_count ( Music_Emu const* me ) { return me->voice_count(); } +void gme_ignore_silence ( Music_Emu* me, int disable ) { me->ignore_silence( disable != 0 ); } +void gme_set_tempo ( Music_Emu* me, double t ) { me->set_tempo( t ); } +void gme_mute_voice ( Music_Emu* me, int index, int mute ) { me->mute_voice( index, mute != 0 ); } +void gme_mute_voices ( Music_Emu* me, int mask ) { me->mute_voices( mask ); } +void gme_set_equalizer ( Music_Emu* me, gme_equalizer_t const* eq ) { me->set_equalizer( *eq ); } +gme_equalizer_t gme_equalizer( Music_Emu const* me ) { return me->equalizer(); } +const char** gme_voice_names ( Music_Emu const* me ) { return me->voice_names(); } |