def load(filename):
f = open(filename)
try:
json_object = json.load(f)
except:
raise InvalidFileFormat, "Need JSON file!"
f.close()
if not "file_type" in json_object or not json_object[
"file_type"] == FILE_TYPE:
raise InvalidFileFormat, "Invalid JSON file."
if not json_object["format_version"] == FILE_FORMAT_VERSION:
raise InvalidFileFormat, "Got file format version %s, need version %s" % (
json_object["format_version"], FILE_FORMAT_VERSION)
# collect strings from tabulature
strings = [i["tuning"] for i in json_object["tabulature"]]
project = Project(json_object["audiofile"], strings, filename)
for json_marker_object in json_object["markers"]:
marker = Timeline.Marker(project.timeline,
json_marker_object["start"],
json_marker_object["duration"],
json_marker_object["text"],
x=json_marker_object["x"])
project.timeline.markers.append(marker)
for i in xrange(len(json_object["tabulature"])):
json_string_object = json_object["tabulature"][i]
for json_marker_object in json_string_object["markers"]:
string = project.timeline.tabulature.strings[i]
marker = Timeline.TabMarker(string, json_marker_object["start"],
json_marker_object["duration"],
json_marker_object["fret"])
string.markers.append(marker)
for json_annotation_object in json_object["annotations"]:
marker = Timeline.Annotation(project.timeline,
x=json_annotation_object["x"],
time=json_annotation_object["time"],
text=json_annotation_object["text"])
project.timeline.annotations.append(marker)
for json_tap_object in json_object["rhythm"]:
time = json_tap_object["time"]
tap = Timeline.Tap(project.timeline.rhythm,
json_tap_object["weight"],
time=time)
project.timeline.rhythm.taps.append(tap)
project.touched = False
return project
