Muting audio is implemented by setting the volume controls to 0. This
has the annoying consequence that attempting to change the volume while
the audio is muted will reset the user's volume setting. E.g. increasing
the volume while muted will start from 0, instead from the volume that
was set before muting. Changing the volume while muted effectively resets
the volume to 0 (which is not very useful), with no possibility of
restoring the old voume.
This commit makes mplayer always report the volume that was set when mute
was enabled while mute is still active.
Caveat: this might be have confusing effects when the volume control is
directly connected with a system wide mixer setting. Now it's even less
obvious (and thus more confusing) that muting will set the mixer volume
to 0.
Also always clip input volumes, and remove some minor code duplication.
Compiling with full features requires development files for several
external libraries. Below is a list of some important requirements. For
more information see the output of './configure --help' for a list of options,
or look at the list of enabled and disabled features printed after running
'./configure'. If you think you have support for some feature installed
but configure fails to detect it, the file config.log may contain information
about the reasons for the failure.
Libraries specific to particular video output methods
(you'll want at least one of VDPAU, GL or Xv):
- libvdpau (for VDPAU output, best choice for NVIDIA cards)
- libGL (OpenGL output)
- libXv (XVideo output)
general:
- libasound (ALSA audio output)
- various general X development libraries
- libfreetype
- libfontconfig
- libass
- FFmpeg libraries (libavutil libavcodec libavformat libswscale libpostproc)
Most of the above libraries are available in suitable versions on normal
Linux distributions. However FFmpeg is an exception (distro versions may be
too old to work at all or work well). For that reason you may want to use
the separately available build wrapper that first compiles FFmpeg libraries
and libass, and then compiles the player statically linked against those.
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