diff options
Diffstat (limited to 'plugins/gme/game-music-emu-svn/gme/Classic_Emu.cpp')
| -rw-r--r-- | plugins/gme/game-music-emu-svn/gme/Classic_Emu.cpp | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/plugins/gme/game-music-emu-svn/gme/Classic_Emu.cpp b/plugins/gme/game-music-emu-svn/gme/Classic_Emu.cpp deleted file mode 100644 index 9b68a445..00000000 --- a/plugins/gme/game-music-emu-svn/gme/Classic_Emu.cpp +++ /dev/null @@ -1,184 +0,0 @@ -// Game_Music_Emu 0.5.5. http://www.slack.net/~ant/ - -#include "Classic_Emu.h" - -#include "Multi_Buffer.h" -#include <string.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" - -Classic_Emu::Classic_Emu() -{ - buf = 0; - stereo_buffer = 0; - voice_types = 0; - - // avoid inconsistency in our duplicated constants - assert( (int) wave_type == (int) Multi_Buffer::wave_type ); - assert( (int) noise_type == (int) Multi_Buffer::noise_type ); - assert( (int) mixed_type == (int) Multi_Buffer::mixed_type ); -} - -Classic_Emu::~Classic_Emu() -{ - delete stereo_buffer; -} - -void Classic_Emu::set_equalizer_( equalizer_t const& eq ) -{ - Music_Emu::set_equalizer_( eq ); - update_eq( eq.treble ); - if ( buf ) - buf->bass_freq( (int) equalizer().bass ); -} - -blargg_err_t Classic_Emu::set_sample_rate_( long rate ) -{ - if ( !buf ) - { - if ( !stereo_buffer ) - CHECK_ALLOC( stereo_buffer = BLARGG_NEW Stereo_Buffer ); - buf = stereo_buffer; - } - return buf->set_sample_rate( rate, 1000 / 20 ); -} - -void Classic_Emu::mute_voices_( int mask ) -{ - Music_Emu::mute_voices_( mask ); - for ( int i = voice_count(); i--; ) - { - if ( mask & (1 << i) ) - { - set_voice( i, 0, 0, 0 ); - } - else - { - Multi_Buffer::channel_t ch = buf->channel( i, (voice_types ? voice_types [i] : 0) ); - assert( (ch.center && ch.left && ch.right) || - (!ch.center && !ch.left && !ch.right) ); // all or nothing - set_voice( i, ch.center, ch.left, ch.right ); - } - } -} - -void Classic_Emu::change_clock_rate( long rate ) -{ - clock_rate_ = rate; - buf->clock_rate( rate ); -} - -blargg_err_t Classic_Emu::setup_buffer( long rate ) -{ - change_clock_rate( rate ); - RETURN_ERR( buf->set_channel_count( voice_count() ) ); - set_equalizer( equalizer() ); - buf_changed_count = buf->channels_changed_count(); - return 0; -} - -blargg_err_t Classic_Emu::start_track_( int track ) -{ - RETURN_ERR( Music_Emu::start_track_( track ) ); - buf->clear(); - return 0; -} - -blargg_err_t Classic_Emu::play_( long count, sample_t* out ) -{ - long remain = count; - while ( remain ) - { - remain -= buf->read_samples( &out [count - remain], remain ); - if ( remain ) - { - if ( buf_changed_count != buf->channels_changed_count() ) - { - buf_changed_count = buf->channels_changed_count(); - remute_voices(); - } - int msec = buf->length(); - blip_time_t clocks_emulated = (blargg_long) msec * clock_rate_ / 1000; - RETURN_ERR( run_clocks( clocks_emulated, msec ) ); - assert( clocks_emulated ); - buf->end_frame( clocks_emulated ); - } - } - return 0; -} - -// Rom_Data - -blargg_err_t Rom_Data_::load_rom_data_( Data_Reader& in, - int header_size, void* header_out, int fill, long pad_size ) -{ - long file_offset = pad_size - header_size; - - rom_addr = 0; - mask = 0; - size_ = 0; - rom.clear(); - - file_size_ = in.remain(); - if ( file_size_ <= header_size ) // <= because there must be data after header - return gme_wrong_file_type; - blargg_err_t err = rom.resize( file_offset + file_size_ + pad_size ); - if ( !err ) - err = in.read( rom.begin() + file_offset, file_size_ ); - if ( err ) - { - rom.clear(); - return err; - } - - file_size_ -= header_size; - memcpy( header_out, &rom [file_offset], header_size ); - - memset( rom.begin() , fill, pad_size ); - memset( rom.end() - pad_size, fill, pad_size ); - - return 0; -} - -void Rom_Data_::set_addr_( long addr, int unit ) -{ - rom_addr = addr - unit - pad_extra; - - long rounded = (addr + file_size_ + unit - 1) / unit * unit; - if ( rounded <= 0 ) - { - rounded = 0; - } - else - { - int shift = 0; - unsigned long max_addr = (unsigned long) (rounded - 1); - while ( max_addr >> shift ) - shift++; - mask = (1L << shift) - 1; - } - - if ( addr < 0 ) - addr = 0; - size_ = rounded; - if ( rom.resize( rounded - rom_addr + pad_extra ) ) { } // OK if shrink fails - - if ( 0 ) - { - debug_printf( "addr: %X\n", addr ); - debug_printf( "file_size: %d\n", file_size_ ); - debug_printf( "rounded: %d\n", rounded ); - debug_printf( "mask: $%X\n", mask ); - } -} |