4b14055011
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@976 a95241bf-73f2-0310-859d-f6bbb57e9c96
49 lines
2.4 KiB
Plaintext
49 lines
2.4 KiB
Plaintext
Messages that can be gathered with BMediaRoster::StartWatching()
|
|
|
|
for each registered handler, the first message always informs about all exiting nodes, like this:
|
|
|
|
B_MEDIA_NODE_CREATED:
|
|
BMessage: what = TRIA (0x54524941, or 1414678849)
|
|
entry media_node_id, type='LONG', c=7, size= 4, data[0]: 0x1 (1, '')
|
|
data[1]: 0x2 (2, '')
|
|
data[2]: 0x3 (3, '')
|
|
data[3]: 0x4 (4, '')
|
|
data[4]: 0x5 (5, '')
|
|
data[5]: 0x7 (7, '')
|
|
data[6]: 0x8 (8, '')
|
|
|
|
Creating, connection, disconnecting and deleting looks like this:
|
|
|
|
B_MEDIA_NODE_CREATED:
|
|
BMessage: what = TRIA (0x54524941, or 1414678849)
|
|
entry media_node_id, type='LONG', c=1, size= 4, data[0]: 0x12 (18, '')
|
|
|
|
B_MEDIA_CONNECTION_MADE:
|
|
BMessage: what = TRIC (0x54524943, or 1414678851)
|
|
entry output, type='RAWT', c=1, size=328,
|
|
entry input, type='RAWT', c=1, size=328,
|
|
entry format, type='RAWT', c=1, size=192,
|
|
entry be:old_what, type='LONG', c=1, size= 4, data[0]: 0x54524943 (1414678851, 'TRIC')
|
|
|
|
B_MEDIA_CONNECTION_BROKEN:
|
|
BMessage: what = TRID (0x54524944, or 1414678852)
|
|
entry source, type='RAWT', c=1, size=16,
|
|
entry destination, type='RAWT', c=1, size=16,
|
|
entry be:old_what, type='LONG', c=1, size= 4, data[0]: 0x54524944 (1414678852, 'TRID')
|
|
|
|
B_MEDIA_NODE_DELETED:
|
|
BMessage: what = TRIB (0x54524942, or 1414678850)
|
|
entry media_node_id, type='LONG', c=1, size= 4, data[0]: 0x12 (18, '')
|
|
|
|
The following notification is only received if you use the node specific StartWatching,
|
|
and only if the node you are watching uses BroadcastParameterChange()
|
|
|
|
B_MEDIA_NEW_PARAMETER_VALUE:
|
|
BMessage: what = TRIL (0x5452494c, or 1414678860)
|
|
entry be:node, type='RAWT', c=2, size=24,
|
|
entry be:parameter, type='LONG', c=1, size= 4, data[0]: 0x2 (2, '')
|
|
entry be:when, type='LLNG', c=1, size= 8, data[0]: 0x2388ad126 (9538556198, '')
|
|
entry be:value, type='RAWT', c=1, size= 4,
|
|
entry be:old_what, type='LONG', c=1, size= 4, data[0]: 0x5452494c (1414678860, 'TRIL')
|
|
|
|
Other notifications have not been observed so far. |