Instead of forcing each property implementation implement its own logic
for M_PROPERTY_STEP_UP/M_PROPERTY_STEP_DOWN, handle it in the generic
property code.
Rename the M_PROPERTY_STEP_UP command to M_PROPERTY_SWITCH (the other
property command, M_PROPERTY_STEP_DOWN, isn't needed anymore: stepping
downwards is done by passing a negative argument). Always use double as
argument type; it makes the code easier, and covers all property types.
Move the code which does the actual type-specific value stepping to
m_option.c (the idea is that m_option handles types).
Some properties still have custom handlers implemented with
M_PROPERTY_SWITCH. They can't be mapped to the generic mechanism,
because their value range is dynamic or entirely unknown.
For some properties, the default step stride is changed to 1. This is no
issue, because the default bindings in input.conf all use an explicit
stride in the affected cases.
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 (for libass)
- libfontconfig (for libass)
- 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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