Commit Graph

4 Commits

Author SHA1 Message Date
Michael Niedermayer c1d053621c Merge commit '8542f9c4f17125d483c40c0c5723842f1c982f81'
* commit '8542f9c4f17125d483c40c0c5723842f1c982f81':
  replaygain: correctly parse peak values

Conflicts:
	libavutil/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-04-04 22:52:12 +02:00
Alessandro Ghedini 8542f9c4f1 replaygain: correctly parse peak values
According to the ReplayGain spec, the peak amplitude may overflow and may result
in peak amplitude values greater than 1.0 with psychoacoustically coded audio,
such as MP3. Fully compliant decoders must allow peak overflows.

Additionally, having peak values in the 0<->UINT32_MAX scale makes it more
difficult for applications to actually use the peak values (e.g. when
implementing clipping prevention) since values have to be rescaled down.

This patch corrects the peak parsing by removing the rescaling of the decoded
values between 0 and UINT32_MAX and the 1.0 upper limit.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
2014-04-04 17:40:19 +02:00
Michael Niedermayer 83e8978798 Merge commit '5a7e35dd2351c30bab45177b9482cb8833a0ca78'
* commit '5a7e35dd2351c30bab45177b9482cb8833a0ca78':
  Add replaygain side data type and code for parsing replaygain tags.

Conflicts:
	libavcodec/avcodec.h
	libavcodec/version.h
	libavutil/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-03-24 14:03:55 +01:00
Anton Khirnov 5a7e35dd23 Add replaygain side data type and code for parsing replaygain tags. 2014-03-24 06:07:51 +01:00