int discoverAVC( int* port, octlet_t guid )
{
rom1394_directory rom_dir;
raw1394handle_t handle;
int device = -1;
int i, j = 0;
int m = raw1394_get_num_ports();
if ( *port >= 0 )
{
/* search on explicit port */
j = *port;
m = *port + 1;
}
for ( ; j < m && device == -1; j++ )
{
handle = raw1394_open( j );
for ( i = 0; i < raw1394_get_nodecount( handle ); ++i )
{
if ( guid != 0 )
{
/* select explicitly by GUID */
if ( guid == rom1394_get_guid( handle, i ) )
{
device = i;
*port = j;
break;
}
}
else
{
/* select first AV/C Tape Reccorder Player node */
if ( rom1394_get_directory( handle, i, &rom_dir ) < 0 )
{
fprintf( stderr, "error reading config rom directory for node %d\n", i );
continue;
}
if ( ( rom1394_get_node_type( &rom_dir ) == ROM1394_NODE_TYPE_AVC ) &&
avc1394_check_subunit_type( handle, i, AVC1394_SUBUNIT_TYPE_VCR ) )
{
device = i;
*port = j;
break;
}
}
}
raw1394_close( handle );
}
return device;
}
static void
gst_hdv1394src_update_device_name (GstHDV1394Src * src)
{
raw1394handle_t handle;
gint portcount, port, nodecount, node;
rom1394_directory directory;
g_free (src->device_name);
src->device_name = NULL;
GST_LOG_OBJECT (src, "updating device name for current GUID");
handle = raw1394_new_handle ();
if (handle == NULL)
goto gethandle_failed;
portcount = raw1394_get_port_info (handle, NULL, 0);
for (port = 0; port < portcount; port++) {
if (raw1394_set_port (handle, port) >= 0) {
nodecount = raw1394_get_nodecount (handle);
for (node = 0; node < nodecount; node++) {
if (src->guid == rom1394_get_guid (handle, node)) {
if (rom1394_get_directory (handle, node, &directory) >= 0) {
g_free (src->device_name);
src->device_name = g_strdup (directory.label);
rom1394_free_directory (&directory);
goto done;
} else {
GST_WARNING ("error reading rom directory for node %d", node);
}
}
}
}
}
src->device_name = g_strdup ("Unknown"); /* FIXME: translate? */
done:
raw1394_destroy_handle (handle);
return;
/* ERRORS */
gethandle_failed:
{
GST_WARNING ("failed to get raw1394 handle: %s", g_strerror (errno));
src->device_name = g_strdup ("Unknown"); /* FIXME: translate? */
return;
}
}
/*
* When an ieee1394 bus reset happens, usually a device has been removed
* or added. We send a message on the message bus with the node count
* and whether the capture device used in this element connected, disconnected
* or was unchanged
* Message structure:
* nodecount - integer with number of nodes on bus
* current-device-change - integer (1 if device connected, 0 if no change to
* current device status, -1 if device disconnected)
*/
static int
gst_hdv1394src_bus_reset (raw1394handle_t handle, unsigned int generation)
{
GstHDV1394Src *src;
gint nodecount;
GstMessage *message;
GstStructure *structure;
gint current_device_change;
gint i;
src = gst_hdv1394src_from_raw1394handle (handle);
GST_INFO_OBJECT (src, "have bus reset");
/* update generation - told to do so by docs */
raw1394_update_generation (handle, generation);
nodecount = raw1394_get_nodecount (handle);
/* allocate memory for portinfo */
/* current_device_change is -1 if camera disconnected, 0 if other device
* connected or 1 if camera has now connected */
current_device_change = -1;
for (i = 0; i < nodecount; i++) {
if (src->guid == rom1394_get_guid (handle, i)) {
/* Camera is with us */
GST_DEBUG ("Camera is with us");
if (!src->connected) {
current_device_change = 1;
src->connected = TRUE;
} else
current_device_change = 0;
}
}
if (src->connected && current_device_change == -1) {
GST_DEBUG ("Camera has disconnected");
src->connected = FALSE;
} else if (!src->connected && current_device_change == -1) {
GST_DEBUG ("Camera is still not with us");
current_device_change = 0;
}
structure = gst_structure_new ("ieee1394-bus-reset", "nodecount", G_TYPE_INT,
nodecount, "current-device-change", G_TYPE_INT, current_device_change,
NULL);
message = gst_message_new_element (GST_OBJECT (src), structure);
gst_element_post_message (GST_ELEMENT (src), message);
return 0;
}
static GValueArray *
gst_1394_get_guid_array (void)
{
GValueArray *result = NULL;
raw1394handle_t handle = NULL;
int num_ports = 0;
int port = 0;
int num_nodes = 0;
int node = 0;
rom1394_directory directory;
GValue value = { 0, };
handle = raw1394_new_handle ();
if (handle == NULL)
return NULL;
num_ports = raw1394_get_port_info (handle, NULL, 0);
for (port = 0; port < num_ports; port++) {
if (raw1394_set_port (handle, port) >= 0) {
num_nodes = raw1394_get_nodecount (handle);
for (node = 0; node < num_nodes; node++) {
rom1394_get_directory (handle, node, &directory);
if (rom1394_get_node_type (&directory) == ROM1394_NODE_TYPE_AVC &&
avc1394_check_subunit_type (handle, node,
AVC1394_SUBUNIT_TYPE_VCR)) {
if (result == NULL)
result = g_value_array_new (3); /* looks like a sensible default */
g_value_init (&value, G_TYPE_UINT64);
g_value_set_uint64 (&value, rom1394_get_guid (handle, node));
g_value_array_append (result, &value);
g_value_unset (&value);
}
}
}
}
return result;
}
static int
gst_hdv1394src_discover_avc_node (GstHDV1394Src * src)
{
int node = -1;
int i, j = 0;
int m = src->num_ports;
if (src->port >= 0) {
/* search on explicit port */
j = src->port;
m = j + 1;
}
/* loop over all our ports */
for (; j < m && node == -1; j++) {
raw1394handle_t handle;
struct raw1394_portinfo pinf[16];
/* open the port */
handle = raw1394_new_handle ();
if (!handle) {
GST_WARNING ("raw1394 - failed to get handle: %s.\n", strerror (errno));
continue;
}
if (raw1394_get_port_info (handle, pinf, 16) < 0) {
GST_WARNING ("raw1394 - failed to get port info: %s.\n",
strerror (errno));
goto next;
}
/* tell raw1394 which host adapter to use */
if (raw1394_set_port (handle, j) < 0) {
GST_WARNING ("raw1394 - failed to set set port: %s.\n", strerror (errno));
goto next;
}
/* now loop over all the nodes */
for (i = 0; i < raw1394_get_nodecount (handle); i++) {
/* are we looking for an explicit GUID ? */
if (src->guid != 0) {
if (src->guid == rom1394_get_guid (handle, i)) {
node = i;
src->port = j;
g_free (src->uri);
src->uri = g_strdup_printf ("dv://%d", src->port);
break;
}
} else {
rom1394_directory rom_dir;
/* select first AV/C Tape Recorder Player node */
if (rom1394_get_directory (handle, i, &rom_dir) < 0) {
GST_WARNING ("error reading config rom directory for node %d\n", i);
continue;
}
if ((rom1394_get_node_type (&rom_dir) == ROM1394_NODE_TYPE_AVC) &&
avc1394_check_subunit_type (handle, i, AVC1394_SUBUNIT_TYPE_VCR)) {
node = i;
src->port = j;
src->guid = rom1394_get_guid (handle, i);
g_free (src->uri);
src->uri = g_strdup_printf ("dv://%d", src->port);
g_free (src->device_name);
src->device_name = g_strdup (rom_dir.label);
break;
}
rom1394_free_directory (&rom_dir);
}
}
next:
raw1394_destroy_handle (handle);
}
return node;
}