1 files changed, 124 insertions, 0 deletions
diff --git a/plugins/gme/game-music-emu-0.6pre/gme/Classic_Emu.cpp b/plugins/gme/game-music-emu-0.6pre/gme/Classic_Emu.cpp
new file mode 100644
index 00000000..229bb67d
--- /dev/null
+++ b/plugins/gme/game-music-emu-0.6pre/gme/Classic_Emu.cpp
@@ -0,0 +1,124 @@
+// Game_Music_Emu 0.6-pre. http://www.slack.net/~ant/
+
+#include "Classic_Emu.h"
+
+#include "Multi_Buffer.h"
+
+/* Copyright (C) 2003-2008 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           = NULL;
+	stereo_buffer = NULL;
+	voice_types   = NULL;
+	
+	// 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;
+	delete effects_buffer_;
+	effects_buffer_ = NULL;
+}
+
+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_( int 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, NULL, NULL, NULL );
+		}
+		else
+		{
+			Multi_Buffer::channel_t ch = buf->channel( i );
+			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( int rate )
+{
+	clock_rate_ = rate;
+	buf->clock_rate( rate );
+}
+
+blargg_err_t Classic_Emu::setup_buffer( int rate )
+{
+	change_clock_rate( rate );
+	RETURN_ERR( buf->set_channel_count( voice_count(), voice_types ) );
+	set_equalizer( equalizer() );
+	buf_changed_count = buf->channels_changed_count();
+	return blargg_ok;
+}
+
+blargg_err_t Classic_Emu::start_track_( int track )
+{
+	RETURN_ERR( Music_Emu::start_track_( track ) );
+	buf->clear();
+	return blargg_ok;
+}
+
+blargg_err_t Classic_Emu::play_( int count, sample_t out [] )
+{
+	// read from buffer, then refill buffer and repeat if necessary
+	int remain = count;
+	while ( remain )
+	{
+		buf->disable_immediate_removal();
+		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();
+			}
+			
+			// TODO: use more accurate length calculation
+			int msec = buf->length();
+			blip_time_t clocks_emulated = msec * clock_rate_ / 1000 - 100;
+			RETURN_ERR( run_clocks( clocks_emulated, msec ) );
+			assert( clocks_emulated );
+			buf->end_frame( clocks_emulated );
+		}
+	}
+	return blargg_ok;
+}