Class: MusicMaster::Formats::Wave
- Inherits:
-
Object
- Object
- MusicMaster::Formats::Wave
- Defined in:
- lib/MusicMaster/Formats/Wave.rb
Overview
Wave file format. Take the following parameters:
-
:Dither (Boolean): Do we apply dither while converting ?
-
:SampleRate (Integer): Sample rate in Hz (ie 44100, 192000 …)
-
:BitDepth (Integer): Number of bits used to encode 1 sample on 1 channel (ie 8, 16, 24…)
Instance Method Summary collapse
-
#deliver(iSrcFileName, iDstFileName, iFormatConf, iMetadata) ⇒ Object
Deliver a file.
-
#getFileExt ⇒ Object
Give the file extension.
Instance Method Details
#deliver(iSrcFileName, iDstFileName, iFormatConf, iMetadata) ⇒ Object
Deliver a file. The delivered file can be a shortcut to the source one.
- Parameters
-
iSrcFileName (String): The source file to deliver from
-
iDstFileName (String): The destination file to be delivered
-
iFormatConf (map<Symbol,Object>): The format configuration
-
iMetadata (map<Symbol,Object>): The metadata that can be used while delivering the file
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# File 'lib/MusicMaster/Formats/Wave.rb', line 33 def deliver(iSrcFileName, iDstFileName, iFormatConf, iMetadata) # Check if we can just make a shortcut lShortcut = true if (!iFormatConf.empty?) if (iFormatConf[:Dither]) lShortcut = false else # Need to get the source file attributes (sample rate and bit depth) require 'WSK/Common' self.class.module_eval('include WSK::Common') accessInputWaveFile(iSrcFileName) do |iHeader, iInputData| lShortcut = !(((iFormatConf[:SampleRate] != nil) and (iFormatConf[:SampleRate] != iHeader.SampleRate)) or ((iFormatConf[:BitDepth] != nil) and (iFormatConf[:BitDepth] != iHeader.NbrBitsPerSample))) next nil end end end if (lShortcut) # Just create a shortcut createShortcut(iSrcFileName, iDstFileName) else # We need to convert the Wave file: call SSRC lTranslatedParams = [ '--profile standard', '--twopass' ] iFormatConf.each do |iParam, iValue| case iParam when :SampleRate lTranslatedParams << "--rate #{iValue}" when :BitDepth lTranslatedParams << "--bits #{iValue}" when :Dither lTranslatedParams << '--dither 4' if (iValue == true) else log_warn "Unknown Wave format parameter: #{iParam} (value #{iValue.inspect}). Ignoring it." end end lCmd = "#{@MusicMasterConf[:Formats]['Wave'][:SRCCmdLine]} #{lTranslatedParams.sort.join(' ')} \"#{iSrcFileName}\" \"#{iDstFileName}\"" log_info "=> #{lCmd}" raise "Error while executing SSRC command \"#{lCmd}\": error code #{$?.exitstatus}" if (!system(lCmd)) or ($?.exitstatus != 0) end end |
#getFileExt ⇒ Object
Give the file extension
- Return
-
String: The file extension (without .)
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# File 'lib/MusicMaster/Formats/Wave.rb', line 21 def getFileExt return 'wav' end |