[Mplayer-cvslog] CVS: main/libmpcodecs dec_audio.c,1.14,1.15

[Diego Biurrun]

Anders Johansson writes:
 > > Anders Johansson writes:
 > >  > Modified Files:
 > >  > 	dec_audio.c 
 > >  > Log Message:
 > >  > Adding -format and -af switches
 > > 
 > > Could you please add these to the man page?  Thanks
 > 
 > There are basically three new switches and some generic documentation
 > that needs to be added to the documentation at the moment for the new
 > audio filter layer. The documentation is valid both for mencoder and
 > for mplayer. I will write some more docs for the -af switches when the
 > source is starting to stabilize (couple of weeks from now).

great

 > Audio filters 
 > The audio filters in MPlayer can be used for changing the properties
 > of the audio stream(s) before the sound reaches the encoding in
 > mencoder or the sound card in mplayer. The filters are currently
 > enabled automatically so that any audio data can be played or
 > recorded to any type of output device or audio encoder. The properties
 > that can be changed are number of channels and sample frequency and
 > format. The settings are probed and automatically configured but can
 > be overridden by using the -channels -rate and -format switches
 > respectively.
 > 
 > -channels
 > Change the number of playback channels. If the number of output
 > channels is bigger than the number of input channels empty channels
 > are inserted. The exception is mixing from mono to stereo, then the
 > mono channel is repeated in both the output channels. If the number of
 > output channels is smaller than the number of input channels the
 > exceeding channels are truncated. A mixer filter will correct the
 > shortcomings of this filter in the future.

I suppose this is different from the -channels option that we have
currently, right?

 > -rate
 > Select output sample rate from the filter layer in <Hz>. 

MPlayer complains about unknown option -rate, do you mean -srate?

 > -format 
 > Select the format used for output from the filter layer. The
 > format is selected according to the defines in libao2/afmt.h.

Will there be an alternative to giving these hex values in the future?

Diego