diff --git a/examples/Makefile.am b/examples/Makefile.am
index cb13b64..a05af08 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -17,5 +17,8 @@ dctool_SOURCES = \
 	dctool_read.c \
 	dctool_write.c \
 	dctool_fwupdate.c \
+	output.h \
+	output-private.h \
+	output.c \
 	utils.h \
 	utils.c
diff --git a/examples/output-private.h b/examples/output-private.h
new file mode 100644
index 0000000..db8cb06
--- /dev/null
+++ b/examples/output-private.h
@@ -0,0 +1,58 @@
+/*
+ * libdivecomputer
+ *
+ * Copyright (C) 2016 Jef Driesen
+ *
+ * This library 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 library 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 library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#ifndef DCTOOL_OUTPUT_PRIVATE_H
+#define DCTOOL_OUTPUT_PRIVATE_H
+
+#include <libdivecomputer/common.h>
+#include <libdivecomputer/parser.h>
+
+#include "output.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+typedef struct dctool_output_vtable_t dctool_output_vtable_t;
+
+struct dctool_output_t {
+	const dctool_output_vtable_t *vtable;
+	unsigned int number;
+};
+
+struct dctool_output_vtable_t {
+	size_t size;
+
+	dc_status_t (*write) (dctool_output_t *output, dc_parser_t *parser, const unsigned char data[], unsigned int size, const unsigned char fingerprint[], unsigned int fsize);
+
+	dc_status_t (*free) (dctool_output_t *output);
+};
+
+dctool_output_t *
+dctool_output_allocate (const dctool_output_vtable_t *vtable);
+
+void
+dctool_output_deallocate (dctool_output_t *output);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* DCTOOL_OUTPUT_PRIVATE_H */
diff --git a/examples/output.c b/examples/output.c
new file mode 100644
index 0000000..510c929
--- /dev/null
+++ b/examples/output.c
@@ -0,0 +1,79 @@
+/*
+ * libdivecomputer
+ *
+ * Copyright (C) 2016 Jef Driesen
+ *
+ * This library 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 library 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 library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <stdlib.h>
+#include <assert.h>
+
+#include "output-private.h"
+
+dctool_output_t *
+dctool_output_allocate (const dctool_output_vtable_t *vtable)
+{
+	dctool_output_t *output = NULL;
+
+	assert(vtable != NULL);
+	assert(vtable->size >= sizeof(dctool_output_t));
+
+	// Allocate memory.
+	output = (dctool_output_t *) malloc (vtable->size);
+	if (output == NULL) {
+		return output;
+	}
+
+	output->vtable = vtable;
+	output->number = 0;
+
+	return output;
+}
+
+void
+dctool_output_deallocate (dctool_output_t *output)
+{
+	free (output);
+}
+
+dc_status_t
+dctool_output_write (dctool_output_t *output, dc_parser_t *parser, const unsigned char data[], unsigned int size, const unsigned char fingerprint[], unsigned int fsize)
+{
+	if (output == NULL || output->vtable->write == NULL)
+		return DC_STATUS_SUCCESS;
+
+	output->number++;
+
+	return output->vtable->write (output, parser, data, size, fingerprint, fsize);
+}
+
+dc_status_t
+dctool_output_free (dctool_output_t *output)
+{
+	dc_status_t status = DC_STATUS_SUCCESS;
+
+	if (output == NULL)
+		return DC_STATUS_SUCCESS;
+
+	if (output->vtable->free) {
+		status = output->vtable->free (output);
+	}
+
+	dctool_output_deallocate (output);
+
+	return status;
+}
diff --git a/examples/output.h b/examples/output.h
new file mode 100644
index 0000000..b11675f
--- /dev/null
+++ b/examples/output.h
@@ -0,0 +1,43 @@
+/*
+ * libdivecomputer
+ *
+ * Copyright (C) 2016 Jef Driesen
+ *
+ * This library 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 library 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 library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#ifndef DCTOOL_OUTPUT_H
+#define DCTOOL_OUTPUT_H
+
+#include <libdivecomputer/common.h>
+#include <libdivecomputer/parser.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+typedef struct dctool_output_t dctool_output_t;
+
+dc_status_t
+dctool_output_write (dctool_output_t *output, dc_parser_t *parser, const unsigned char data[], unsigned int size, const unsigned char fingerprint[], unsigned int fsize);
+
+dc_status_t
+dctool_output_free (dctool_output_t *output);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* DCTOOL_OUTPUT_H */