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diff --git a/cinelerra-5.1/cinelerra/filedv.h b/cinelerra-5.1/cinelerra/filedv.h
new file mode 100644
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+++ b/cinelerra-5.1/cinelerra/filedv.h
@@ -0,0 +1,143 @@
+
+/*
+ * CINELERRA
+ * Copyright (C) 2004 Richard Baverstock
+ * 
+ * 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 FILEDV_H
+#define FILEDV_H
+
+#include "../config.h"
+#include "filebase.h"
+#include "file.inc"
+
+#ifdef DV_USE_FFMPEG
+#include <avcodec.h>
+#endif
+
+#include <libdv/dv.h>
+
+
+class FileDV : public FileBase
+{
+public:
+	FileDV(Asset *asset, File *file);
+	~FileDV();
+
+	static void get_parameters(BC_WindowBase *parent_window,
+		Asset *asset,
+		BC_WindowBase* &format_window,
+		int audio_options,
+		int video_options);
+	
+	int reset_parameters_derived();
+	int open_file(int rd, int wr);
+
+	static int check_sig(Asset *asset);
+	int close_file_derived();
+	
+	int64_t get_video_position();
+	int64_t get_audio_position();
+	
+	int set_video_position(int64_t x);
+	int set_audio_position(int64_t x);
+
+	int audio_samples_copy(double **buffer, int64_t len);
+	
+	int write_samples(double **buffer, int64_t len);
+	int write_frames(VFrame ***frames, int len);
+	
+	int read_compressed_frame(VFrame *buffer);
+	int write_compressed_frame(VFrame *buffers);
+	
+	int64_t compressed_frame_size();
+	
+	int read_samples(double *buffer, int64_t len);
+	int read_frame(VFrame *frame);
+	
+	int colormodel_supported(int colormodel);
+	
+	int can_copy_from(Edit *edit, int64_t position);
+	
+	static int get_best_colormodel(Asset *asset, int driver);
+	
+	int get_audio_frame(int64_t pos);
+	int get_audio_offset(int64_t pos);
+
+private:
+	FILE *stream;
+
+	Mutex *stream_lock;
+	Mutex *decoder_lock;
+	Mutex *video_position_lock;
+	
+	dv_decoder_t *decoder;
+	dv_encoder_t *encoder;
+	dv_encoder_t *audio_encoder;
+		
+	int64_t audio_position;
+	int64_t video_position;
+	
+	unsigned char *video_buffer;
+	unsigned char *audio_buffer;
+
+	int16_t **audio_sample_buffer;
+	int audio_sample_buffer_start;
+	int audio_sample_buffer_end;
+	int audio_sample_buffer_len;
+	int audio_sample_buffer_maxsize;
+	
+	int audio_frames_written;
+	
+	int output_size;
+	int isPAL;
+};
+
+
+class DVConfigAudio: public BC_Window
+{
+public:
+	DVConfigAudio(BC_WindowBase *parent_window, Asset *asset);
+	~DVConfigAudio();
+
+	void create_objects();
+	int close_event();
+
+private:
+	Asset *asset;
+	BC_WindowBase *parent_window;
+};
+
+
+
+class DVConfigVideo: public BC_Window
+{
+public:
+	DVConfigVideo(BC_WindowBase *parent_window, Asset *asset);
+	~DVConfigVideo();
+
+	void create_objects();
+	int close_event();
+
+private:
+	Asset *asset;
+	BC_WindowBase *parent_window;
+};
+
+
+#endif