Beyond Linux® From Scratch (System V Edition) - Version r11.2-1152

Chapter 42. Multimedia Libraries and Drivers

libtheora-1.1.1

Introduction to libtheora

libtheora is a reference implementation of the Theora video compression format being developed by the Xiph.Org Foundation.

[Note]

Note

Development versions of BLFS may not build or run some packages properly if dependencies have been updated since the most recent stable versions of the book.

Package Information

libtheora Dependencies

Required

libogg-1.3.5

Recommended

libvorbis-1.3.7

Optional

SDL-1.2.15 and libpng-1.6.39 (both to build the example players), Doxygen-1.9.6, texlive-20220321 (or install-tl-unx), BibTex, and Transfig (all four to build the API documentation), and Valgrind-3.20.0

User Notes: https://wiki.linuxfromscratch.org/blfs/wiki/Libtheora

Installation of libtheora

Install libtheora by running the following commands: 

sed -i 's/png_\(sizeof\)/\1/g' examples/png2theora.c &&
./configure --prefix=/usr --disable-static &&
make

If you wish to run the tests, issue: make check.

Now, as the root user: 

make install

If you wish to install the examples (so that you can hack on theora), install them as the root user: 

cd examples/.libs &&
for E in *; do
  install -v -m755 $E /usr/bin/theora_${E}
done

Command Explanations

sed -i 's/png_\(sizeof\)/\1/g' examples/png2theora.c: This sed fixes build with libpng 1.6.

--disable-static: This switch prevents installation of static versions of the libraries.

Contents

Installed Programs: None, unless you installed the examples
Installed Libraries: libtheora.so, libtheoraenc.so, and libtheoradec.so
Installed Directories: /usr/include/theora and /usr/share/doc/libtheora-1.1.1

Short Descriptions

libtheora*.so

contains the functions to read and write video files