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author | diego <diego@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2003-03-26 00:53:15 +0000 |
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committer | diego <diego@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2003-03-26 00:53:15 +0000 |
commit | 58a658fe363a5c68a0e8e62702e9deae15b57ee0 (patch) | |
tree | a2588864c49044faf2e1c5b7fd870009f8b08719 /DOCS/tech/libmpcodecs.txt | |
parent | 21c03a2bd4ac76aede005df69c1de9cdf26a2cb9 (diff) | |
download | mpv-58a658fe363a5c68a0e8e62702e9deae15b57ee0.tar.bz2 mpv-58a658fe363a5c68a0e8e62702e9deae15b57ee0.tar.xz |
Merged video filter description from vop.txt.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9688 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'DOCS/tech/libmpcodecs.txt')
-rw-r--r-- | DOCS/tech/libmpcodecs.txt | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/DOCS/tech/libmpcodecs.txt b/DOCS/tech/libmpcodecs.txt index c25ed5439c..50a9a7cc8b 100644 --- a/DOCS/tech/libmpcodecs.txt +++ b/DOCS/tech/libmpcodecs.txt @@ -111,7 +111,30 @@ Short description of video path: filter have to implement the whole filter api. Leaf filters are now: vf_vo.c (wrapper over libvo) and ve_XXX.c (video encoders used by mencoder). + +Video Filters +============= + +Video filters are plugin-like code modules implementing the interface +defined in vf.h. + +Basically it means video output manipulation, i.e. these plugins can +modify the image and the image properties (size, colorspace etc) between +the video decoders (vd.h) and the output layer (libvo or video encoders). + +The actual API is a mixture of the video decoder (vd.h) and libvo +(video_out.h) APIs. + +main differences: +- vf plugins may be "loaded" multiple times, with different parameters + and context - it's new in MPlayer, old APIs weren't reentrant. +- vf plugins don't have to implement all functions - all functions have a + 'fallback' version, so the plugins only override these if wanted. +- Each vf plugin has its own get_image context, and they can interchange + images/buffers using these get_image/put_image calls. + + The VIDEO FILTER API: ===================== filename: vf_FILTERNAME.c @@ -348,6 +371,7 @@ btw, u should avoid using global or static variables, to store filter instance specific stuff, as filters might be used multiple times & in the future even multiple streams might be possible + The AUDIO path: =============== TODO!!! |