def PrintSsrcInfo(self, ssrc_id, ssrc):
"""Prints packet and size statistics for a given SSRC.
Args:
ssrc_id: textual identifier of SSRC printed beside statistics for it.
ssrc: SSRC by which to filter data and display statistics
"""
filtered_ssrc = [point for point in self.data_points if point.ssrc
== ssrc]
payloads = misc.NormalizeCounter(
collections.Counter([point.payload_type for point in
filtered_ssrc]))
payload_info = "payload type(s): {}".format(
", ".join(str(payload) for payload in payloads))
print("{} 0x{:x} {}, {:.2f}% packets, {:.2f}% data".format(
ssrc_id, ssrc, payload_info, self.ssrc_frequencies[ssrc] * 100,
self.ssrc_size_table[ssrc] * 100))
print(" packet sizes:")
(bin_counts, bin_bounds) = numpy.histogram([point.size for point in
filtered_ssrc], bins=5,
density=False)
bin_proportions = bin_counts / sum(bin_counts)
print("\n".join([
" {:.1f} - {:.1f}: {:.2f}%".format(bin_bounds[i], bin_bounds[i + 1],
bin_proportions[i] * 100)
for i in range(len(bin_proportions))
]))
def __init__(self, data_points):
"""Initializes object with data_points and computes simple statistics.
Computes percentages of number of packets and packet sizes by
SSRC.
Args:
data_points: list of pb_parse.DataPoints on which statistics are
calculated.
"""
self.data_points = data_points
self.ssrc_frequencies = misc.NormalizeCounter(
collections.Counter([pt.ssrc for pt in self.data_points]))
self.ssrc_size_table = misc.SsrcNormalizedSizeTable(self.data_points)
self.bandwidth_kbps = None
self.smooth_bw_kbps = None