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Added HAVE_SOFT_FLOAT (--with-softfloat)

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Jaroslav Kysela 2002-04-24 14:41:55 +00:00
parent c39d1a665d
commit f23813b7e9
4 changed files with 24 additions and 0 deletions
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8
INSTALL
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@ -111,3 +111,11 @@ For platform names in the form cpu-vendor-os (or aliases for this)
you should look in 'config.guess' script. Target and all paths you should look in 'config.guess' script. Target and all paths
used here are only examples and should not be directly applicable to used here are only examples and should not be directly applicable to
your system. your system.
Configuration for machines without FPU
--------------------------------------
If your machine does not have FP unit, you should use '--with-softfloat'
option. This option disables usage of float numbers in PCM route plugin.
ALSA could then leave much more CPU cycles for your applications, but you
could still need some floating point emulator.

3
acconfig.h
View file

@ -12,3 +12,6 @@
/* NDEBUG */ /* NDEBUG */
#undef NDEBUG #undef NDEBUG
/* Do we have FPU on this machine? */
#undef HAVE_SOFT_FLOAT

5
configure.in
View file

@ -85,6 +85,7 @@ AC_HEADER_STDC
AM_CONFIG_HEADER(include/config.h) AM_CONFIG_HEADER(include/config.h)
AC_CHECK_HEADERS(sound/asound.h) AC_CHECK_HEADERS(sound/asound.h)
dnl Checks for typedefs, structures, and compiler characteristics. dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST AC_C_CONST
AC_C_INLINE AC_C_INLINE
@ -120,6 +121,10 @@ else
AC_MSG_RESULT(no) AC_MSG_RESULT(no)
fi fi
AC_ARG_WITH(softfloat,
[ --with-softfloat do you have floating point unit on this machine? (optional)],
[ AC_DEFINE(HAVE_SOFT_FLOAT, "1")],)
dnl Check for architecture dnl Check for architecture
AC_MSG_CHECKING(for architecture) AC_MSG_CHECKING(for architecture)
case "$target" in case "$target" in

8
include/pcm_plugin.h
View file

@ -31,6 +31,8 @@
#ifndef __ALSA_PCM_PLUGIN_H #ifndef __ALSA_PCM_PLUGIN_H
#include "config.h"
/** /**
* \defgroup PCM_Plugins PCM Plugins * \defgroup PCM_Plugins PCM Plugins
* \ingroup PCM * \ingroup PCM
@ -41,7 +43,13 @@
#define SND_PCM_PLUGIN_RATE_MIN 4000 /**< minimal rate for the rate plugin */ #define SND_PCM_PLUGIN_RATE_MIN 4000 /**< minimal rate for the rate plugin */
#define SND_PCM_PLUGIN_RATE_MAX 192000 /**< maximal rate for the rate plugin */ #define SND_PCM_PLUGIN_RATE_MAX 192000 /**< maximal rate for the rate plugin */
/* ROUTE_FLOAT should be set to 0 for machines without FP unit - like iPAQ */
#ifdef HAVE_SOFT_FLOAT
#define SND_PCM_PLUGIN_ROUTE_FLOAT 0 /**< use integers for route plugin */
#else
#define SND_PCM_PLUGIN_ROUTE_FLOAT 1 /**< use floats for route plugin */ #define SND_PCM_PLUGIN_ROUTE_FLOAT 1 /**< use floats for route plugin */
#endif
#define SND_PCM_PLUGIN_ROUTE_RESOLUTION 16 /**< integer resolution for route plugin */ #define SND_PCM_PLUGIN_ROUTE_RESOLUTION 16 /**< integer resolution for route plugin */
#if SND_PCM_PLUGIN_ROUTE_FLOAT #if SND_PCM_PLUGIN_ROUTE_FLOAT