From d4a8f2eb40ecde00c8c771130ceed40de957817a Mon Sep 17 00:00:00 2001
From: Jef Driesen <jefdriesen@users.sourceforge.net>
Date: Tue, 16 Apr 2013 12:32:03 +0200
Subject: [PATCH] Add support for retrieving the transport type.

With the new interface, an application can easily retrieve the
underlying transport type from the device descriptors and present a
custom user interface element to the end-user for supplying transport
specific parameters. For example the serial port for devices using
serial communcication.

For devices using a usb-serial chipset or the bluetooth Serial Port
Profile (SPP/rfcomm), the transport type is DC_TRANSPORT_SERIAL, because
internally the serial emulation layer is used for the communication.
---
 include/libdivecomputer/descriptor.h | 10 ++++++++++
 src/descriptor.c                     | 14 ++++++++++++++
 src/libdivecomputer.symbols          |  1 +
 3 files changed, 25 insertions(+)

diff --git a/include/libdivecomputer/descriptor.h b/include/libdivecomputer/descriptor.h
index 82e643f..6f9735d 100644
--- a/include/libdivecomputer/descriptor.h
+++ b/include/libdivecomputer/descriptor.h
@@ -29,6 +29,13 @@
 extern "C" {
 #endif /* __cplusplus */
 
+typedef enum dc_transport_t {
+	DC_TRANSPORT_NONE,
+	DC_TRANSPORT_SERIAL,
+	DC_TRANSPORT_USB,
+	DC_TRANSPORT_IRDA
+} dc_transport_t;
+
 typedef struct dc_descriptor_t dc_descriptor_t;
 
 dc_status_t
@@ -49,6 +56,9 @@ dc_descriptor_get_type (dc_descriptor_t *descriptor);
 unsigned int
 dc_descriptor_get_model (dc_descriptor_t *descriptor);
 
+dc_transport_t
+dc_descriptor_get_transport (dc_descriptor_t *descriptor);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */
diff --git a/src/descriptor.c b/src/descriptor.c
index b550624..0154dd9 100644
--- a/src/descriptor.c
+++ b/src/descriptor.c
@@ -280,3 +280,17 @@ dc_descriptor_get_model (dc_descriptor_t *descriptor)
 
 	return descriptor->model;
 }
+
+dc_transport_t
+dc_descriptor_get_transport (dc_descriptor_t *descriptor)
+{
+	if (descriptor == NULL)
+		return DC_TRANSPORT_NONE;
+
+	if (descriptor->type == DC_FAMILY_ATOMICS_COBALT)
+		return DC_TRANSPORT_USB;
+	else if (descriptor->type == DC_FAMILY_UWATEC_SMART)
+		return DC_TRANSPORT_IRDA;
+	else
+		return DC_TRANSPORT_SERIAL;
+}
diff --git a/src/libdivecomputer.symbols b/src/libdivecomputer.symbols
index 07b0a08..9748695 100644
--- a/src/libdivecomputer.symbols
+++ b/src/libdivecomputer.symbols
@@ -31,6 +31,7 @@ dc_descriptor_get_vendor
 dc_descriptor_get_product
 dc_descriptor_get_type
 dc_descriptor_get_model
+dc_descriptor_get_transport
 
 dc_parser_new
 dc_parser_get_type