libraries/libsamplerate: Initial import

This commit is contained in:
Paul Wisehart 2010-05-11 14:56:21 +02:00 committed by Michiel van Wessem
parent c56c619470
commit e6aeec39f4
4 changed files with 98 additions and 0 deletions

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Author : Erik de Castro Lopo
Secret Rabbit Code (aka libsamplerate) is a Sample Rate Converter
for audio. One example of where such a thing would be useful is
converting audio from the CD sample rate of 44.1kHz to the 48kHz
sample rate used by DAT players.
SRC is capable of arbitrary and time varying conversions ;
from downsampling by a factor of 256 to upsampling by the same
factor. Arbitrary in this case means that the ratio of input and
output sample rates can be an irrational number. The conversion
ratio can also vary with time for speeding up and slowing down
effects.
SRC provides a small set of converters to allow quality to be traded
off against computation cost. The current best converter provides
a signal-to-noise ratio of 97dB with -3dB passband extending from
DC to 96% of the theoretical best bandwidth for a given pair of
input and output sample rates.

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#!/bin/sh
# Slackware build script for libsamplerate 0.1.2
# Written by paul wisehart wise@lupulin.net
# Modified by the SlackBuild project.
PRGNAM=libsamplerate
VERSION=0.1.2
ARCH=${ARCH:-i486}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}
if [ "$ARCH" = "i486" ]; then
SLKCFLAGS="-O2 -march=i486 -mtune=i686"
elif [ "$ARCH" = "i686" ]; then
SLKCFLAGS="-O2 -march=i686 -mtune=i686"
fi
rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP || exit 1
rm -rf $PRGNAM-$VERSION
tar xvzf $CWD/$PRGNAM-$VERSION.tar.gz || exit 1
cd $PRGNAM-$VERSION || exit 1
chown -R root:root .
chmod -R u+w,go+r-w,a-s .
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
--prefix=/usr \
--sysconfdir=/etc \
--disable-static \
--localstatedir=/var || exit 1
make DESTDIR=$PKG || exit 1
make install DESTDIR=$PKG || exit 1
( cd $PKG
find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a COPYING README doc/* $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.tgz

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PRGNAM="libsamplerate"
VERSION="0.1.2"
HOMEPAGE="http://www.mega-nerd.com/SRC/"
DOWNLOAD="http://www.mega-nerd.com/SRC/libsamplerate-0.1.2.tar.gz"
MD5SUM="06861c2c6b8e5273c9b80cf736b9fd0e"
MAINTAINER="paul wisehart"
EMAIL="wise@lupulin.net"
APPROVED="BP{k}"

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libsamplerate: libsamplerate (Sample Rate Converter for audio)
libsamplerate:
libsamplerate: Secret Rabbit Code (aka libsamplerate) is a Sample Rate Converter
libsamplerate: for audio. One example of where such a thing would be useful is
libsamplerate: converting audio from the CD sample rate of 44.1kHz to the 48kHz
libsamplerate: sample rate used by DAT players. SRC is capable of arbitrary
libsamplerate: and time varying conversions. SRC provides a small set of
libsamplerate: converters to allow quality to be traded off against
libsamplerate: computation cost.
libsamplerate:
libsamplerate: