RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Moved hook documentation into the doc directory 

Originally committed as revision 1292 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Philip Gladstone 2002-11-30 17:12:23 +00:00
parent adbc051047
commit 9d6f1d52c5
4 changed files with 2 additions and 97 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
doc/Makefile
View File

@ -1,4 +1,4 @@
all: ffmpeg-doc.html faq.html ffserver-doc.html all: ffmpeg-doc.html faq.html ffserver-doc.html hooks.html
%.html: %.texi %.html: %.texi
texi2html -monolithic -number $< texi2html -monolithic -number $<

0
vhook/hooks.texi → doc/hooks.texi
View File

2
vhook/Makefile
View File

@ -13,7 +13,7 @@ ifeq ($(HAVE_IMLIB2),yes)
HOOKS += imlib2.so HOOKS += imlib2.so
endif endif
all: $(HOOKS) hooks.html all: $(HOOKS)
install: install:
install -s -m 755 $(HOOKS) $(INSTDIR) install -s -m 755 $(HOOKS) $(INSTDIR)

95
vhook/hooks.html
View File

@ -1,95 +0,0 @@
<HTML>
<HEAD>
<!-- This HTML file has been created by texi2html 1.51
from hooks.texi on 20 November 2002 -->
<TITLE>Video Hook Documentation</TITLE>
</HEAD>
<BODY>
<H1>Video Hook Documentation</H1>
<P>
<P><HR><P>
<H1>Table of Contents</H1>
<UL>
<LI><A NAME="TOC1" HREF="hooks.html#SEC1">1 Introduction</A>
<UL>
<LI><A NAME="TOC2" HREF="hooks.html#SEC2">1.1 null.c</A>
<LI><A NAME="TOC3" HREF="hooks.html#SEC3">1.2 fish.c</A>
<LI><A NAME="TOC4" HREF="hooks.html#SEC4">1.3 imlib2.c</A>
</UL>
</UL>
<P><HR><P>
<P>
Video Hook Documentation
<P>
</P>
<H1><A NAME="SEC1" HREF="hooks.html#TOC1">1 Introduction</A></H1>
<P>
The video hook functionality is designed (mostly) for live video. It allows
the video to be modified or examined between the decoder and the encoder.
</P>
<P>
Any number of hook modules can be placed inline, and they are run in the
order that they were specified on the ffmpeg command line.
</P>
<P>
Three modules are provided and are described below. They are all intended to
be used as a base for your own modules.
</P>
<P>
Modules are loaded using the -vhook option to ffmpeg. The value of this parameter
is a space seperated list of arguments. The first is the module name, and the rest
are passed as arguments to the Configure function of the module.
</P>
<H2><A NAME="SEC2" HREF="hooks.html#TOC2">1.1 null.c</A></H2>
<P>
This does nothing. Actually it converts the input image to RGB24 and then converts
it back again. This is meant as a sample that you can use to test your setup.
</P>
<H2><A NAME="SEC3" HREF="hooks.html#TOC3">1.2 fish.c</A></H2>
<P>
This implements a 'fish detector'. Essentially it converts the image into HSV
space and tests whether more than a certain percentage of the pixels fall into
a specific HSV cuboid. If so, then the image is saved into a file for processing
by other bits of code.
</P>
<P>
Why use HSV? It turns out that HSV cuboids represent a more compact range of
colors than would an RGB cuboid.
</P>
<H2><A NAME="SEC4" HREF="hooks.html#TOC4">1.3 imlib2.c</A></H2>
<P>
This allows a caption to be placed onto each frame. It supports inserting the
time and date. By using the imlib functions, it would be easy to add your own
graphical logo, add a frame/border, etc.
</P>
<P><HR><P>
This document was generated on 20 November 2002 using the
<A HREF="http://wwwcn.cern.ch/dci/texi2html/">texi2html</A>
translator version 1.51.</P>
</BODY>
</HTML>