MF4の中身を見る(車輪の再開発)

シンプルにメッセージとシグナルを表示する

import asammdf
mdf = asammdf.MDF("BusLogging_xxxx.MF4")

for g in mdf.groups:
    print(g.channel_group.acq_name)
    for c in g.channels:
        print("  ", c.name)

ipytreeを使ってツリー表示

import asammdf
from ipytree import Tree, Node
mdf = asammdf.MDF("BusLogging_xxxx.MF4")

nodes = []
for g in mdf.groups:
    acq_name = g.channel_group.acq_name
    node = Node(acq_name, [Node(c.name) for c in g.channels])
    node.opened = False
    nodes.append(node)

root = Node('root', nodes)
root.opened = False

tree = Tree()
tree.add_node(root)
display(tree)

メッセージがたくさんある場合、接頭語でグループ化してツリー表示

import asammdf
from ipytree import Tree, Node

other_name = 'Other'
keys = 'AAA BBB CCC'.split()
node_hash = {other_name: []}
for k in keys:
    node_hash[k] = []

mdf = asammdf.MDF("BusLogging_xxxx.MF4")

for g in mdf.groups:
    acq_name = g.channel_group.acq_name
    key_name = other_name
    for k in keys:
        if k in acq_name:
            key_name = k
            break
    node = Node(g.channel_group.acq_name, [Node(c.name) for c in g.channels])
    node.opened = False
    node_hash[key_name].append(node)

root_nodes = []
for name, nodes in node_hash.items():
    node = Node(name, nodes)
    node.opened = False
    root_nodes.append(node)

root = Node('root', root_nodes)
root.opened = False

tree = Tree()
tree.add_node(root)
display(tree) 

複数ソースがある場合のメッセージ、シグナルの情報収集

import asammdf
mdf = asammdf.MDF("Recorder_AllSignal_*.mf4")

info = []
for gi, g in enumerate(mdf.groups):
    for ci, c in enumerate(g.channels):
        if c.source is not None:
            info.append((gi, g.channel_group.acq_name, ci, c.name, c.source.path))
        else:
            info.append((gi, g.channel_group.acq_name, ci, c.name, None))

source2msgs = {}
for gi, gn, ci, cn, s in info:
    if s is None:
        continue
    h = source2msgs.get(s, set())
    h.add((gi, gn))
    source2msgs[s] = h

source2sigs = {}
for source, msgs in source2msgs.items():
    source2sigs[source] = {}
    for gi, gn in msgs:
        source2sigs[source][gi] = dict(name=gn, sigs=[])
        sigs = []
        for ci, c in enumerate(mdf.groups[gi].channels):
            sigs.append((ci, c.name))
        source2sigs[source][gi]['sigs'] = sigs

ソース別メッセージのツリー表示

from ipytree import Tree, Node

source_nodes = []
for s in source2msgs.keys():
    node = Node(s, [Node(gn) for gi, gn in source2msgs[s]])
    node.opened = False
    source_nodes.append(node)
    #print(s)
    #for gi, gn in source2msgs[s]:
    #    print("  ", gi, gn)


root = Node('sources', source_nodes)
root.opened = False

tree = Tree()
tree.add_node(root)
display(tree)