According to FFmpeg.org, FFmpeg development has gone into overdrive. As a consequence, R128GAIN wasn't compiling any longer using the latest FFmpeg versions. This release ports R128GAIN to the latest FFmpeg API. It adds a command line and GUI option to allow choosing between the EBU R128-2 (current, dating from 2011) and EBU R128-1 (former, dating from 2010) standards. The release requires "libavformat.so.54" and "libavcodec.so.54" ("avformat-54.dll" and "avcodec-54.dll" on win32), and is again in line with the latest FFmpeg builds.
This release fixes a bug in 0.9.4 where only either the loudness or the loudness range could be computed but not both together. The result was that in almost all practical cases the loudness defaulted to -23.0 LUFS.
This release implements the EBU R128 loudness range algorithm (LRA). It provides four respective environment variables for the command option: $TR - the track loudness range; $TRDB - the track loudness range in dB/LU; $AR - the album loudness range; and $ARDB - the album loudness range in dB/LU. The API of LIB1770 (implementing the loudness range algorithm) has slightly changed in order to allow for providing the length of a block (either 400 ms or 3000 ms.)
This release provides four more environment variables for the command option: $TL - the track loudness relative to full scale; $TLDB - the track loudness relative to full scale in dB/LUFS; $AL - the album loudness relative to full scale; and $ALDB - the album loudness relative to full scale in dB/LUFS.
