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diff --git a/cinelerra-5.1/cinelerra/pluginaclient.h b/cinelerra-5.1/cinelerra/pluginaclient.h
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+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program 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 General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * 
+ */
+
+#ifndef PLUGINACLIENT_H
+#define PLUGINACLIENT_H
+
+
+
+#include "maxbuffers.h"
+#include "pluginclient.h"
+#include "samples.inc"
+
+class PluginAClient : public PluginClient
+{
+public:
+	PluginAClient(PluginServer *server);
+	virtual ~PluginAClient();
+	
+	int get_render_ptrs();
+	int init_realtime_parameters();
+
+	int is_audio();
+// These should return 1 if error or 0 if success.
+// Multichannel buffer process for backwards compatibility
+	virtual int process_realtime(int64_t size, 
+		Samples **input_ptr, 
+		Samples **output_ptr);
+// Single channel buffer process for backwards compatibility and transitions
+	virtual int process_realtime(int64_t size, 
+		Samples *input_ptr, 
+		Samples *output_ptr);
+
+// Process buffer using pull method.  By default this loads the input into the
+// buffer and calls process_realtime with input and output pointing to buffer.
+// start_position - requested position relative to sample_rate. Relative
+//     to start of EDL.  End of buffer if reverse.
+// sample_rate - scale of start_position.
+	virtual int process_buffer(int64_t size, 
+		Samples **buffer,
+		int64_t start_position,
+		int sample_rate);
+	virtual int process_buffer(int64_t size, 
+		Samples *buffer,
+		int64_t start_position,
+		int sample_rate);
+
+
+	virtual int process_loop(Samples *buffer, int64_t &write_length) { return 1; };
+	virtual int process_loop(Samples **buffers, int64_t &write_length) { return 1; };
+	int plugin_process_loop(Samples **buffers, int64_t &write_length);
+
+	int plugin_start_loop(int64_t start, 
+		int64_t end, 
+		int64_t buffer_size, 
+		int total_buffers);
+
+	int plugin_get_parameters();
+
+// Called by non-realtime client to read audio for processing.
+// buffer - output wave
+// channel - channel of the plugin input for multichannel plugin
+// start_position - start of samples in forward.  End of samples in reverse.
+//     Relative to start of EDL.  Scaled to sample_rate.
+// len - number of samples to read
+	int read_samples(Samples *buffer, 
+		int channel, 
+		int64_t start_position, 
+		int64_t len);
+	int read_samples(Samples *buffer, 
+		int64_t start_position, 
+		int64_t len);
+
+// Called by realtime plugin to read audio from previous entity
+// sample_rate - scale of start_position.  Provided so the client can get data
+//     at a higher fidelity than provided by the EDL.
+	int read_samples(Samples *buffer,
+		int channel,
+		int sample_rate,
+		int64_t start_position,
+		int64_t len);
+
+// Get the sample rate of the EDL
+	int get_project_samplerate();
+// Get the requested sample rate
+	int get_samplerate();
+
+	int64_t local_to_edl(int64_t position);
+	int64_t edl_to_local(int64_t position);
+
+
+// point to the start of the buffers
+	ArrayList<float**> input_ptr_master;
+	ArrayList<float**> output_ptr_master;
+// point to the regions for a single render
+	float **input_ptr_render;
+	float **output_ptr_render;
+// sample rate of EDL.  Used for normalizing keyframes
+	int project_sample_rate;
+// Local parameters set by non realtime plugin about the file to be generated.
+// Retrieved by server to set output file format.
+// In realtime plugins, these are set before every process_buffer as the
+// requested rates.
+	int sample_rate;
+};
+
+
+
+#endif