[MPlayer-dev-eng] [PATCH] VCD Playback via libdcio
R. Bernstein
rocky at panix.com
Wed Dec 15 19:16:44 CET 2004
I've patched mplayer to use libcdio reading routines; that is at
the end of this post. I was rather surprised at how easy it was to do.
What's the difference/benefit?
1. Image Drivers. Of the OS device drivers that mplayer provides, I
think all are also available via libcdio. libcdio also has a cygwin
driver. As for the image drivers, libcdio adds cdrdao and some NRG
cd images (although some of this is buggy and will be fixed in
time).
2. Auto VCD detection. libcdio provides auto-detection of CD-drives
with VCDs in them on all platforms. For example if you have
multiple CD-ROMs you can leave the drive specification blank and if
you specify a vcd MRL all of the drives will be scanned for a VCD.
3. Simplicity. I think the operation is simpler and cleaner. Were
mplayer to use libcdio exclusively and I am *not* suggesting this
right now, 6 files (vcd_read_darwin.h, vcd_read_fbsd.h,
vcd_read_nbsd.h, vcd_read.h, cue_read.c, cue_read.h) could be
removed. The replaced file, stream_vcdx.c (for stream_vcd.c), is
doesn't have any OS-specific code in it.
4. Springboard for doing more. If one wants to do more sophisticated
VCD navigation or deal with VCD-specific entities like entry
points, or LIDs, the code is better positioned for libvcdinfo which
requires libcdio.
libcdio can also be used for CD-DA reading too. But it looks like
mplayer supports CD paranoia while right now and that's not
integrated into libcdio. (It is slated for the next release of
libcdio though.) For CD-DA using libcdio would allow for retrieval
of CD-Text info.
Enough. Here's the patch and then the additional file libmpdemux/stream_vcdx.c
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