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- add some doc on why we limit length of silence file

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This commit is contained in:
Richard Alam 2011-08-15 17:28:53 -04:00
parent 1c92d22b0d
commit f6d7540ff5
1 changed files with 9 additions and 2 deletions
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11
record-and-playback/core/lib/recordandplayback/generators/audio.rb
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@ -210,10 +210,13 @@ module BigBlueButton
# Determine the audio padding we need to generate.
def self.generate_audio_paddings(events, events_xml)
# TODO: Need to make this a lot DRYer.
paddings = []
events.sort! {|a,b| a.start_event_timestamp <=> b.start_event_timestamp}
length_of_gap = events[0].start_event_timestamp.to_i - BigBlueButton::Events.first_event_timestamp(events_xml).to_i
# Check if the silence is greater that 10 minutes long. If it is, assume something went wrong with the
# recording. This prevents us from generating a veeeerrryyy looonnngggg silence maxing disk space.
if ((length_of_gap > 0) and (length_of_gap < 600000))
paddings << create_gap_audio_event(length_of_gap, BigBlueButton::Events.first_event_timestamp(events_xml), events[0].start_event_timestamp.to_i - 1)
else
@ -226,7 +229,9 @@ module BigBlueButton
ar_prev = events[i]
ar_next = events[i+1]
length_of_gap = ar_next.start_event_timestamp.to_i - ar_prev.stop_event_timestamp.to_i
# Check if the silence is greater that 10 minutes long. If it is, assume something went wrong with the
# recording. This prevents us from generating a veeeerrryyy looonnngggg silence maxing disk space.
if ((length_of_gap > 0) and (length_of_gap < 600000))
paddings << create_gap_audio_event(length_of_gap, ar_prev.stop_event_timestamp.to_i + 1, ar_next.start_event_timestamp.to_i - 1)
else
@ -236,7 +241,9 @@ module BigBlueButton
i += 1
end
# Check if the silence is greater that 10 minutes long. If it is, assume something went wrong with the
# recording. This prevents us from generating a veeeerrryyy looonnngggg silence maxing disk space.
length_of_gap = BigBlueButton::Events.last_event_timestamp(events_xml).to_i - events[-1].stop_event_timestamp.to_i
if ((length_of_gap > 0) and (length_of_gap < 600000))
paddings << create_gap_audio_event(length_of_gap, events[-1].stop_event_timestamp.to_i + 1, BigBlueButton::Events.last_event_timestamp(events_xml))