1 files changed, 79 insertions, 0 deletions
diff --git a/plugins/gme/game-music-emu-0.6pre/gme/Resampler.cpp b/plugins/gme/game-music-emu-0.6pre/gme/Resampler.cpp
new file mode 100644
index 00000000..96bb73e9
--- /dev/null
+++ b/plugins/gme/game-music-emu-0.6pre/gme/Resampler.cpp
@@ -0,0 +1,79 @@
+// Game_Music_Emu 0.6-pre. http://www.slack.net/~ant/
+
+#include "Resampler.h"
+
+/* Copyright (C) 2004-2008 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"
+
+Resampler::Resampler()
+{
+	write_pos = 0;
+	rate_     = 0;
+}
+
+Resampler::~Resampler() { }
+
+void Resampler::clear()
+{
+	write_pos = 0;
+	clear_();
+}
+
+inline int Resampler::resample_wrapper( sample_t out [], int* out_size,
+		sample_t const in [], int in_size )
+{
+	assert( rate() );
+	
+	sample_t* out_ = out;
+	int result = resample_( &out_, out + *out_size, in, in_size ) - in;
+	assert( out_ <= out + *out_size );
+	assert( result <= in_size );
+	
+	*out_size = out_ - out;
+	return result;
+}
+
+int Resampler::resample( sample_t out [], int out_size, sample_t const in [], int* in_size )
+{
+	*in_size = resample_wrapper( out, &out_size, in, *in_size );
+	return out_size;
+}
+
+
+//// Buffering
+
+blargg_err_t Resampler::resize_buffer( int new_size )
+{
+	RETURN_ERR( buf.resize( new_size ) );
+	clear();
+	return blargg_ok;
+}
+
+int Resampler::skip_input( int count )
+{
+	write_pos -= count;
+	if ( write_pos < 0 ) // occurs when downsampling
+	{
+		count += write_pos;
+		write_pos = 0;
+	}
+	memmove( buf.begin(), &buf [count], write_pos * sizeof buf [0] );
+	return count;
+}
+
+int Resampler::read( sample_t out [], int out_size )
+{
+	if ( out_size )
+		skip_input( resample_wrapper( out, &out_size, buf.begin(), write_pos ) );
+	return out_size;
+}