Commit Graph

11 Commits

Author SHA1 Message Date
Michael Niedermayer
97751e1324 avformat/replaygain: fix mixed declaration and statement
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-04-18 01:16:27 +02:00
Michael Niedermayer
d35efda21a Merge commit 'ae43c10e36197000de2f3cc99ea35727ce98a796'
* commit 'ae43c10e36197000de2f3cc99ea35727ce98a796':
  replaygain: allow exporting already decoded replaygain values

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-04-17 21:45:58 +02:00
Alessandro Ghedini
ae43c10e36 replaygain: allow exporting already decoded replaygain values
This adds a function to export raw replaygain values (i.e. in the (u)int32_t
form). It first checks whether AV_PKT_DATA_REPLAYGAIN side data is present, in
which case it does nothing.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
2014-04-17 20:08:19 +02:00
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
Michael Niedermayer
6520613139 Merge commit '25b6837f7cacd691b19cbc12b9dad1ce84a318a1'
* commit '25b6837f7cacd691b19cbc12b9dad1ce84a318a1':
  replaygain: fix gain sign decoding

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-04-04 22:44:17 +02:00
Michael Niedermayer
b97f2c7c49 replaygain: remove unused variable
Signed-off-by: Anton Khirnov <anton@khirnov.net>
2014-04-04 17:40:51 +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
Alessandro Ghedini
25b6837f7c replaygain: fix gain sign decoding
The gain sign was incorrectly decoded: since the FFSIGN() macro treats 0 as
negative, gain values starting with "0." were always decoded as negative.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
2014-04-04 17:04:37 +02:00
Michael Niedermayer
c01ddf845d avformat/replaygain: remove unused variable
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-03-30 03:23:13 +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