1 files changed, 0 insertions, 405 deletions
diff --git a/plugins/gme/game-music-emu-svn/gme/Ay_Emu.cpp b/plugins/gme/game-music-emu-svn/gme/Ay_Emu.cpp
deleted file mode 100644
index 0ee592e3..00000000
--- a/plugins/gme/game-music-emu-svn/gme/Ay_Emu.cpp
+++ /dev/null
@@ -1,405 +0,0 @@
-// Game_Music_Emu 0.5.5. http://www.slack.net/~ant/
-
-#include "Ay_Emu.h"
-
-#include "blargg_endian.h"
-#include <string.h>
-
-/* Copyright (C) 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"
-
-long const spectrum_clock = 3546900;
-long const cpc_clock      = 2000000;
-
-unsigned const ram_start = 0x4000;
-int const osc_count = Ay_Apu::osc_count + 1;
-
-Ay_Emu::Ay_Emu()
-{
-	beeper_output = 0;
-	set_type( gme_ay_type );
-	
-	static const char* const names [osc_count] = {
-		"Wave 1", "Wave 2", "Wave 3", "Beeper"
-	};
-	set_voice_names( names );
-	
-	static int const types [osc_count] = {
-		wave_type | 0, wave_type | 1, wave_type | 2, mixed_type | 0
-	};
-	set_voice_types( types );
-	set_silence_lookahead( 6 );
-}
-
-Ay_Emu::~Ay_Emu() { }
-
-// Track info
-
-static byte const* get_data( Ay_Emu::file_t const& file, byte const* ptr, int min_size )
-{
-	long pos = ptr - (byte const*) file.header;
-	long file_size = file.end - (byte const*) file.header;
-	assert( (unsigned long) pos <= (unsigned long) file_size - 2 );
-	int offset = (BOOST::int16_t) get_be16( ptr );
-	if ( !offset || blargg_ulong (pos + offset) > blargg_ulong (file_size - min_size) )
-		return 0;
-	return ptr + offset;
-}
-
-static blargg_err_t parse_header( byte const* in, long size, Ay_Emu::file_t* out )
-{
-	typedef Ay_Emu::header_t header_t;
-	out->header = (header_t const*) in;
-	out->end    = in + size;
-	
-	if ( size < Ay_Emu::header_size )
-		return gme_wrong_file_type;
-	
-	header_t const& h = *(header_t const*) in;
-	if ( memcmp( h.tag, "ZXAYEMUL", 8 ) )
-		return gme_wrong_file_type;
-	
-	out->tracks = get_data( *out, h.track_info, (h.max_track + 1) * 4 );
-	if ( !out->tracks )
-		return "Missing track data";
-	
-	return 0;
-}
-
-static void copy_ay_fields( Ay_Emu::file_t const& file, track_info_t* out, int track )
-{
-	Gme_File::copy_field_( out->song, (char const*) get_data( file, file.tracks + track * 4, 1 ) );
-	byte const* track_info = get_data( file, file.tracks + track * 4 + 2, 6 );
-	if ( track_info )
-		out->length = get_be16( track_info + 4 ) * (1000L / 50); // frames to msec
-	
-	Gme_File::copy_field_( out->author,  (char const*) get_data( file, file.header->author, 1 ) );
-	Gme_File::copy_field_( out->comment, (char const*) get_data( file, file.header->comment, 1 ) );
-}
-
-blargg_err_t Ay_Emu::track_info_( track_info_t* out, int track ) const
-{
-	copy_ay_fields( file, out, track );
-	return 0;
-}
-
-struct Ay_File : Gme_Info_
-{
-	Ay_Emu::file_t file;
-	
-	Ay_File() { set_type( gme_ay_type ); }
-	
-	blargg_err_t load_mem_( byte const* begin, long size )
-	{
-		RETURN_ERR( parse_header( begin, size, &file ) );
-		set_track_count( file.header->max_track + 1 );
-		return 0;
-	}
-	
-	blargg_err_t track_info_( track_info_t* out, int track ) const
-	{
-		copy_ay_fields( file, out, track );
-		return 0;
-	}
-};
-
-static Music_Emu* new_ay_emu () { return BLARGG_NEW Ay_Emu ; }
-static Music_Emu* new_ay_file() { return BLARGG_NEW Ay_File; }
-
-static gme_type_t_ const gme_ay_type_ = { "ZX Spectrum", 0, &new_ay_emu, &new_ay_file, "AY", 1 };
-gme_type_t const gme_ay_type = &gme_ay_type_;
-
-// Setup
-
-blargg_err_t Ay_Emu::load_mem_( byte const* in, long size )
-{
-	assert( offsetof (header_t,track_info [2]) == header_size );
-	
-	RETURN_ERR( parse_header( in, size, &file ) );
-	set_track_count( file.header->max_track + 1 );
-	
-	if ( file.header->vers > 2 )
-		set_warning( "Unknown file version" );
-	
-	set_voice_count( osc_count );
-	apu.volume( gain() );
-	
-	return setup_buffer( spectrum_clock );
-}
-	
-void Ay_Emu::update_eq( blip_eq_t const& eq )
-{
-	apu.treble_eq( eq );
-}
-
-void Ay_Emu::set_voice( int i, Blip_Buffer* center, Blip_Buffer*, Blip_Buffer* )
-{
-	if ( i >= Ay_Apu::osc_count )
-		beeper_output = center;
-	else
-		apu.osc_output( i, center );
-}
-
-// Emulation
-
-void Ay_Emu::set_tempo_( double t )
-{
-	play_period = blip_time_t (clock_rate() / 50 / t);
-}
-
-blargg_err_t Ay_Emu::start_track_( int track )
-{
-	RETURN_ERR( Classic_Emu::start_track_( track ) );
-	
-	memset( mem.ram + 0x0000, 0xC9, 0x100 ); // fill RST vectors with RET
-	memset( mem.ram + 0x0100, 0xFF, 0x4000 - 0x100 );
-	memset( mem.ram + ram_start, 0x00, sizeof mem.ram - ram_start );
-	memset( mem.padding1, 0xFF, sizeof mem.padding1 );
-	memset( mem.ram + 0x10000, 0xFF, sizeof mem.ram - 0x10000 );
-	
-	// locate data blocks
-	byte const* const data = get_data( file, file.tracks + track * 4 + 2, 14 );
-	if ( !data ) return "File data missing";
-	
-	byte const* const more_data = get_data( file, data + 10, 6 );
-	if ( !more_data ) return "File data missing";
-	
-	byte const* blocks = get_data( file, data + 12, 8 );
-	if ( !blocks ) return "File data missing";
-	
-	// initial addresses
-	cpu::reset( mem.ram );
-	r.sp = get_be16( more_data );
-	r.b.a = r.b.b = r.b.d = r.b.h = data [8];
-	r.b.flags = r.b.c = r.b.e = r.b.l = data [9];
-	r.alt.w = r.w;
-	r.ix = r.iy = r.w.hl;
-	
-	unsigned addr = get_be16( blocks );
-	if ( !addr ) return "File data missing";
-	
-	unsigned init = get_be16( more_data + 2 );
-	if ( !init )
-		init = addr;
-	
-	// copy blocks into memory
-	do
-	{
-		blocks += 2;
-		unsigned len = get_be16( blocks ); blocks += 2;
-		if ( addr + len > 0x10000 )
-		{
-			set_warning( "Bad data block size" );
-			len = 0x10000 - addr;
-		}
-		check( len );
-		byte const* in = get_data( file, blocks, 0 ); blocks += 2;
-		if ( len > blargg_ulong (file.end - in) )
-		{
-			set_warning( "Missing file data" );
-			len = file.end - in;
-		}
-		//debug_printf( "addr: $%04X, len: $%04X\n", addr, len );
-		if ( addr < ram_start && addr >= 0x400 ) // several tracks use low data
-			debug_printf( "Block addr in ROM\n" );
-		memcpy( mem.ram + addr, in, len );
-		
-		if ( file.end - blocks < 8 )
-		{
-			set_warning( "Missing file data" );
-			break;
-		}
-	}
-	while ( (addr = get_be16( blocks )) != 0 );
-	
-	// copy and configure driver
-	static byte const passive [] = {
-		0xF3,       // DI
-		0xCD, 0, 0, // CALL init
-		0xED, 0x5E, // LOOP: IM 2
-		0xFB,       // EI
-		0x76,       // HALT
-		0x18, 0xFA  // JR LOOP
-	};
-	static byte const active [] = {
-		0xF3,       // DI
-		0xCD, 0, 0, // CALL init
-		0xED, 0x56, // LOOP: IM 1
-		0xFB,       // EI
-		0x76,       // HALT
-		0xCD, 0, 0, // CALL play
-		0x18, 0xF7  // JR LOOP
-	};
-	memcpy( mem.ram, passive, sizeof passive );
-	unsigned play_addr = get_be16( more_data + 4 );
-	//debug_printf( "Play: $%04X\n", play_addr );
-	if ( play_addr )
-	{
-		memcpy( mem.ram, active, sizeof active );
-		mem.ram [ 9] = play_addr;
-		mem.ram [10] = play_addr >> 8;
-	}
-	mem.ram [2] = init;
-	mem.ram [3] = init >> 8;
-	
-	mem.ram [0x38] = 0xFB; // Put EI at interrupt vector (followed by RET)
-	
-	memcpy( mem.ram + 0x10000, mem.ram, 0x80 ); // some code wraps around (ugh)
-	
-	beeper_delta = int (apu.amp_range * 0.65);
-	last_beeper = 0;
-	apu.reset();
-	next_play = play_period;
-	
-	// start at spectrum speed
-	change_clock_rate( spectrum_clock );
-	set_tempo( tempo() );
-	
-	spectrum_mode = false;
-	cpc_mode      = false;
-	cpc_latch     = 0;
-	
-	return 0;
-}
-
-// Emulation
-
-void Ay_Emu::cpu_out_misc( cpu_time_t time, unsigned addr, int data )
-{
-	if ( !cpc_mode )
-	{
-		switch ( addr & 0xFEFF )
-		{
-		case 0xFEFD:
-			spectrum_mode = true;
-			apu_addr = data & 0x0F;
-			return;
-		
-		case 0xBEFD:
-			spectrum_mode = true;
-			apu.write( time, apu_addr, data );
-			return;
-		}
-	}
-	
-	if ( !spectrum_mode )
-	{
-		switch ( addr >> 8 )
-		{
-		case 0xF6:
-			switch ( data & 0xC0 )
-			{
-			case 0xC0:
-				apu_addr = cpc_latch & 0x0F;
-				goto enable_cpc;
-			
-			case 0x80:
-				apu.write( time, apu_addr, cpc_latch );
-				goto enable_cpc;
-			}
-			break;
-		
-		case 0xF4:
-			cpc_latch = data;
-			goto enable_cpc;
-		}
-	}
-	
-	debug_printf( "Unmapped OUT: $%04X <- $%02X\n", addr, data );
-	return;
-	
-enable_cpc:
-	if ( !cpc_mode )
-	{
-		cpc_mode = true;
-		change_clock_rate( cpc_clock );
-		set_tempo( tempo() );
-	}
-}
-
-void ay_cpu_out( Ay_Cpu* cpu, cpu_time_t time, unsigned addr, int data )
-{
-	Ay_Emu& emu = STATIC_CAST(Ay_Emu&,*cpu);
-	
-	if ( (addr & 0xFF) == 0xFE && !emu.cpc_mode )
-	{
-		int delta = emu.beeper_delta;
-		data &= 0x10;
-		if ( emu.last_beeper != data )
-		{
-			emu.last_beeper = data;
-			emu.beeper_delta = -delta;
-			emu.spectrum_mode = true;
-			if ( emu.beeper_output )
-				emu.apu.synth_.offset( time, delta, emu.beeper_output );
-		}
-	}
-	else
-	{
-		emu.cpu_out_misc( time, addr, data );
-	}
-}
-
-int ay_cpu_in( Ay_Cpu*, unsigned addr )
-{
-	// keyboard read and other things
-	if ( (addr & 0xFF) == 0xFE )
-		return 0xFF; // other values break some beeper tunes
-	
-	debug_printf( "Unmapped IN : $%04X\n", addr );
-	return 0xFF;
-}
-
-blargg_err_t Ay_Emu::run_clocks( blip_time_t& duration, int )
-{
-	set_time( 0 );
-	if ( !(spectrum_mode | cpc_mode) )
-		duration /= 2; // until mode is set, leave room for halved clock rate
-	
-	while ( time() < duration )
-	{
-		cpu::run( min( duration, (blip_time_t) next_play ) );
-		
-		if ( time() >= next_play )
-		{
-			next_play += play_period;
-			
-			if ( r.iff1 )
-			{
-				if ( mem.ram [r.pc] == 0x76 )
-					r.pc++;
-				
-				r.iff1 = r.iff2 = 0;
-				
-				mem.ram [--r.sp] = uint8_t (r.pc >> 8);
-				mem.ram [--r.sp] = uint8_t (r.pc);
-				r.pc = 0x38;
-				cpu::adjust_time( 12 );
-				if ( r.im == 2 )
-				{
-					cpu::adjust_time( 6 );
-					unsigned addr = r.i * 0x100u + 0xFF;
-					r.pc = mem.ram [(addr + 1) & 0xFFFF] * 0x100u + mem.ram [addr];
-				}
-			}
-		}
-	}
-	duration = time();
-	next_play -= duration;
-	check( next_play >= 0 );
-	adjust_time( -duration );
-	
-	apu.end_frame( duration );
-	
-	return 0;
-}