Class: GoogleSpeech::Utility
- Inherits:
-
Object
- Object
- GoogleSpeech::Utility
- Defined in:
- lib/google_speech/utility.rb
Constant Summary collapse
- SOX_ERROR_RE =
/error:/
Class Method Summary collapse
- .audio_file_duration(path) ⇒ Object
- .check_local_file(file_path) ⇒ Object
- .logger ⇒ Object
-
.run_command(command, options = {}) ⇒ Object
Pass the command to run, and various options :timeout - seconds to wait for command to complete, defaults to 2 hours :echo_return - gets the return value via appended ‘; echo $?’, true by default :nice - call with nice -19 by default, set to false to stop, or integer to set different level.
- .trim_and_encode(wav_path, flac_path, start, length, rate) ⇒ Object
Class Method Details
.audio_file_duration(path) ⇒ Object
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# File 'lib/google_speech/utility.rb', line 14 def audio_file_duration(path) check_local_file(path) soxi_duration, err = run_command("soxi -V0 -D '#{path}'", :nice=>false, :echo_return=>false) duration = soxi_duration.chomp.to_f duration end |
.check_local_file(file_path) ⇒ Object
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# File 'lib/google_speech/utility.rb', line 78 def check_local_file(file_path) raise "File missing or 0 length: #{file_path}" unless (File.size?(file_path).to_i > 0) end |
.logger ⇒ Object
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# File 'lib/google_speech/utility.rb', line 82 def logger GoogleSpeech.logger end |
.run_command(command, options = {}) ⇒ Object
Pass the command to run, and various options :timeout - seconds to wait for command to complete, defaults to 2 hours :echo_return - gets the return value via appended ‘; echo $?’, true by default :nice - call with nice -19 by default, set to false to stop, or integer to set different level
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# File 'lib/google_speech/utility.rb', line 36 def run_command(command, ={}) timeout = [:timeout] || 7200 # default to adding a nice 19 if nothing specified nice = if .key?(:nice) ![:nice] ? '' : "nice -n #{[:nice].to_i} " else 'nice -n 19 ' end echo_return = (.key?(:echo_return) && ![:echo_return]) ? '' : '; echo $?' cmd = "#{nice}#{command}#{echo_return}" # logger.info "google_speech - run_command: #{cmd}" begin result = Timeout::timeout(timeout) { Open3::popen3(cmd) do |i,o,e| out_str = "" err_str = "" i.close # important! o.sync = true e.sync = true o.each{|line| out_str << line line.chomp! # logger.debug "stdout: #{line}" } e.each { |line| err_str << line line.chomp! # logger.debug "stderr: #{line}" } return out_str, err_str end } rescue Timeout::Error => toe # logger.debug "run_command:Timeout Error - running command, took longer than #{timeout} seconds to execute: '#{cmd}'" raise toe end end |
.trim_and_encode(wav_path, flac_path, start, length, rate) ⇒ Object
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# File 'lib/google_speech/utility.rb', line 22 def trim_and_encode(wav_path, flac_path, start, length, rate) check_local_file(wav_path) command = "sox -t wav '#{wav_path}' -r 8000 -c 1 -t flac '#{flac_path}' trim #{start} #{length} compand .5,2 -80,-80,-75,-50,-30,-15,0,0 norm -0.1" # command = "sox -t wav '#{wav_path}' -t wav '#{flac_path}' norm channels 1 rate #{rate} trim #{start} #{length} compand .5,2 -80,-80,-75,-50,-30,-15,0,0" out, err = run_command(command) response = out + err response.split("\n").each{ |l| raise("trim_and_encode: error cmd: '#{command}'\nout: '#{response}'") if l =~ SOX_ERROR_RE } end |