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	Add gzip support for raw audio files, import the media generator - warvox - VoI…
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	---
	commit a64de8bc7baea28846729624cb83ec8d32b6d46c
	parent 3a47479fdb9dc463945b69e36fe5a1a71a3f4bc8
	Author: HD Moore <[email protected]>
	Date: Sun, 15 Feb 2009 03:47:45 +0000

	Add gzip support for raw audio files, import the media generator


	Diffstat:
	M bin/create_flowdb.rb \| 6 +++---
	A bin/create_media.rb \| 84 +++++++++++++++++++++++++++++…
	M lib/warvox/audio/raw.rb \| 7 +++++++

	3 files changed, 94 insertions(+), 3 deletions(-)
	---
	diff --git a/bin/create_flowdb.rb b/bin/create_flowdb.rb
	@@ -26,12 +26,12 @@ db = File.new(dst, "w")
	dir = Dir.new(src)
	cnt = 0

	-set = dir.entries.sort.grep(/\.raw$/)
	+set = dir.entries.sort.grep(/\.raw/)
	set.each do \|ent\|
	- next if not ent =~ /\.raw$/
	+ next if not ent =~ /\.raw/
	puts "[*] [#{sprintf("%.5d/%.5d", cnt+1, set.length)}] Processing #{en…
	raw = WarVOX::Audio::Raw.from_file( File.join(src, ent) )
	- db.write( ent.gsub('.raw', '') + " " + raw.to_flow + "\n" )
	+ db.write( ent.gsub(/\.raw\|\.gz/, '') + " " + raw.to_flow + "\n" )
	cnt += 1
	end

	diff --git a/bin/create_media.rb b/bin/create_media.rb
	@@ -0,0 +1,84 @@
	+#!/usr/bin/env ruby
	+###################
	+
	+#
	+# Load the library path
	+#
	+base = __FILE__
	+while File.symlink?(base)
	+ base = File.expand_path(File.readlink(base), File.dirname(base))
	+end
	+$:.unshift(File.join(File.expand_path(File.dirname(base)), '..', 'lib'))
	+require 'warvox'
	+
	+#
	+# Script
	+#
	+
	+def usage
	+ $stderr.puts "#{$0} [/path/to/raw/data/] <destination dir> "
	+ exit
	+end
	+
	+require "fileutils"
	+require "tempfile"
	+
	+src = ARGV.shift \|\| usage
	+dst = ARGV.shift \|\| File.join(File.dirname(base), '..', 'data', 'media')
	+
	+FileUtils.mkdir_p(dst)
	+
	+calls = []
	+dir = Dir.new(src)
	+dir.entries.sort.each do \|ent\|
	+
	+ path = File.join(src, ent)
	+ next if ent !~ /(.*)\.raw/m
	+ num = $1
	+
	+ puts "Processing #{num}..."
	+
	+ # Decompress the audio file
	+ rawfile = Tempfile.new("rawfile")
	+ datfile = Tempfile.new("datfile")
	+
	+ cnt = 0
	+ raw = WarVOX::Audio::Raw.from_file(path)
	+ rawfile.write(raw.samples.pack('v*'))
	+ datfile.write(raw.samples.map{\|val\| cnt +=1; "#{cnt} #{val}"}.join("\n…
	+ rawfile.flush
	+ datfile.flush
	+
	+ # Plot samples to a graph
	+ plotter = Tempfile.new("gnuplot")
	+
	+ plotter.puts("set ylabel \"Signal\"")
	+ plotter.puts("set xlabel \"Time\"")
	+
	+ plotter.puts("set terminal png medium size 640,480 transparent")
	+ plotter.puts("set output \"#{dst}/#{num}_big.png\"")
	+ plotter.puts("plot \"#{datfile.path}\" using 1:2 title \"#{num}\" with…
	+
	+ plotter.puts("set output \"#{dst}/#{num}_big_dots.png\"")
	+ plotter.puts("plot \"#{datfile.path}\" using 1:2 title \"#{num}\" with…
	+
	+ plotter.puts("set terminal png small size 160,120 transparent")
	+ plotter.puts("set format x ''")
	+ plotter.puts("set format y ''")
	+ plotter.puts("set output \"#{dst}/#{num}.png\"")
	+ plotter.puts("plot \"#{datfile.path}\" using 1:2 title \"#{num}\" with…
	+ plotter.flush
	+
	+ system("gnuplot #{plotter.path}")
	+ File.unlink(plotter.path)
	+ File.unlink(datfile.path)
	+ plotter.close
	+ datfile.close
	+
	+ # Generate a MP3 audio file
	+ system("sox -s -w -r 8000 -t raw -c 1 #{rawfile.path} #{dst}/#{num}.wa…
	+ system("lame #{dst}/#{num}.wav #{dst}/#{num}.mp3 >/dev/null 2>&1")
	+ File.unlink("#{dst}/#{num}.wav")
	+ File.unlink(rawfile.path)
	+ rawfile.close
	+end
	diff --git a/lib/warvox/audio/raw.rb b/lib/warvox/audio/raw.rb
	@@ -1,6 +1,9 @@
	module WarVOX
	module Audio
	class Raw
	+
	+
	+ require 'zlib'

	##
	# RAW AUDIO - 8khz little-endian 16-bit signed
	@@ -26,6 +29,10 @@ class Raw
	if(not File.readable?(path))
	raise Error, "The specified audio file does not exist"
	end
	+
	+ if(path =~ /\.gz$/)
	+ return self.new(Zlib::GzipReader.open(path).read)
	+ end

	self.new(File.read(path, File.size(path)))
	end