Beyond Linux® From Scratch （systemd 版） - 版本 g1798b28

第 42 章 Multimedia Libraries and Drivers

Speex-1.2.1

Introduction to Speex

Speex is an audio compression format designed specifically for speech. It is well-adapted to internet applications and provides useful features that are not present in most other CODECs.

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注意

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Package Information

Additional Downloads

Speex Dependencies

Required

libogg-1.3.6

Optional

Valgrind-3.27.1

Installation of Speex

This package consists of two separate tarballs. They need to be extracted and built independently.

Install Speex by running the following commands: 

./configure --prefix=/usr    \
            --disable-static \
            --docdir=/usr/share/doc/speex-1.2.1 &&
make

This package does not come with a test suite.

As the root user: 

make install

Now extract and install the speexdsp package: 

cd ..                          &&
tar -xf speexdsp-1.2.1.tar.gz &&
cd speexdsp-1.2.1             &&

./configure --prefix=/usr    \
            --disable-static \
            --docdir=/usr/share/doc/speexdsp-1.2.1 &&
make

Again, as the root user: 

make install

Command Explanations

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

Contents

Installed Programs: speexenc and speexdec
Installed Libraries: libspeex.so and libspeexdsp.so
Installed Directories: /usr/include/speex and /usr/share/doc/speex-1.2.1

Short Descriptions

speexdec

decodes a Speex file and produces a WAV or raw file

speexenc

encodes a WAV or raw file using Speex

libspeex.so

provides functions for the audio encoding/decoding programs

libspeexdsp.so

is a speech processing library that goes along with the Speex codec