[aravis] gv_device: disable packet resend if it's not supported by the device.

[Emmanuel Pacaud <emmanuel src gnome org>]

commit b4ec4fd9640c62862136a17e0c9e65c173bb481e
Author: Emmanuel Pacaud <emmanuel gnome org>
Date:   Fri Mar 8 17:57:35 2013 +0100

    gv_device: disable packet resend if it's not supported by the device.

 src/arvgvdevice.c |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/src/arvgvdevice.c b/src/arvgvdevice.c
index ba18cb3..c06ef04 100644
--- a/src/arvgvdevice.c
+++ b/src/arvgvdevice.c
@@ -71,6 +71,9 @@ struct _ArvGvDevicePrivate {
 
        char *genicam_xml;
        size_t genicam_xml_size;
+
+       gboolean is_packet_resend_supported;
+       gboolean is_write_memory_supported;
 };
 
 GRegex *
@@ -741,6 +744,9 @@ arv_gv_device_create_stream (ArvDevice *device, ArvStreamCallback callback, void
                return NULL;
        }
 
+       if (!gv_device->priv->is_packet_resend_supported)
+               g_object_set (stream, "packet-resend", "never", NULL); 
+
        arv_debug_device ("[GvDevice::create_stream] Stream port = %d", stream_port);
 
        return stream;
@@ -813,6 +819,7 @@ arv_gv_device_new (GInetAddress *interface_address, GInetAddress *device_address
        ArvGvDeviceIOData *io_data;
        ArvGvDeviceHeartbeatData *heartbeat_data;
        char *address_string;
+       guint32 capabilities;
 
        g_return_val_if_fail (G_IS_INET_ADDRESS (interface_address), NULL);
        g_return_val_if_fail (G_IS_INET_ADDRESS (device_address), NULL);
@@ -863,6 +870,13 @@ arv_gv_device_new (GInetAddress *interface_address, GInetAddress *device_address
                                                             gv_device->priv->heartbeat_data,
                                                             TRUE, NULL);
 
+       arv_device_read_register (ARV_DEVICE (gv_device), ARV_GVBS_GVCP_CAPABILITY_OFFSET, &capabilities, 
NULL);
+       gv_device->priv->is_packet_resend_supported = (capabilities & ARV_GVBS_GVCP_CAPABILITY_PACKET_RESEND) 
!= 0;
+       gv_device->priv->is_write_memory_supported = (capabilities & ARV_GVBS_GVCP_CAPABILITY_WRITE_MEMORY) 
!= 0;
+
+       arv_debug_device ("[GvDevice::new] Packet resend = %s", gv_device->priv->is_packet_resend_supported ? 
"yes" : "no");
+       arv_debug_device ("[GvDevice::new] Write memory = %s", gv_device->priv->is_write_memory_supported ? 
"yes" : "no");
+
        return ARV_DEVICE (gv_device);
 }