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build: reimplement the OSS checks using a more declarative approach

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The OSS checks were a big mess and quite buggy. This reimplementes them using
a declarative approach and clearly distinguishing between the various OSS
implementations. The code should now almost be auto-documenting.

We currently support the following implementations of OSS:
 * platform-specific (with `sys/soundcard.h`)
 * SunAudio (default on NetBSD and useable on OpenBSD even if we have sndio
   support there).
 * 4Front (default on FreeBSD)

Since now each OSS check also checks for the appropriate soundcard header,
remove the old soundcard check.

Many thanks to @bugmen0t for in depth info about all the BSDs.
Check #380 and #359 for more info on this commit.
This commit is contained in:
Stefano Pigozzi 2013-11-29 09:01:14 +01:00
parent 18345400c0
commit fa620ffc95
5 changed files with 55 additions and 69 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
waftools/checks/custom.py
View File

@ -1,6 +1,8 @@
from waftools.checks.generic import *
from waflib import Utils
import os
__all__ = ["check_pthreads", "check_iconv", "check_lua", "check_oss"]
__all__ = ["check_pthreads", "check_iconv", "check_lua", "check_oss_4front"]
pthreads_program = load_fragment('pthreads.c')
@ -72,56 +74,23 @@ def check_lua(ctx, dependency_identifier):
return True
return False
# from here on there is the OSS check.. just stop reading here unless you want
# to die inside a little
def __fail_oss_check__(ctx):
ctx.define('PATH_DEV_DSP', '')
ctx.define('PATH_DEV_MIXER', '')
return False
def __get_osslibdir__():
from waflib import Utils
def __get_osslibdir():
cmd = ['sh', '-c', '. /etc/oss.conf && echo $OSSLIBDIR']
p = Utils.subprocess.Popen(cmd, stdin=Utils.subprocess.PIPE,
stdout=Utils.subprocess.PIPE,
stderr=Utils.subprocess.PIPE)
return p.communicate()[0].decode().rstrip()
def __get_osscflags__():
import os
osscflags = ''
osslibdir = __get_osslibdir__()
if osslibdir:
ossincdir = os.path.join(osslibdir, 'include')
soundcard_h = os.path.join(ossincdir, 'sys', 'soundcard.h')
if os.path.exists(soundcard_h):
osscflags = '-I{0}'.format(ossincdir)
return osscflags
def check_oss_4front(ctx, dependency_identifier):
oss_libdir = __get_osslibdir()
def __check_oss_headers__(ctx, dependency_identifier):
fn = check_cc(fragment=load_fragment('oss_audio_header.c'),
use='soundcard', cflags=__get_osscflags__())
fn(ctx, dependency_identifier)
return True
soundcard_h = os.path.join(oss_libdir, "include/sys/soundcard.h")
include_dir = os.path.join(oss_libdir, "include")
def __check_oss_bsd__(ctxdependency_identifier):
# add the oss audio library through a check
ctx.define('PATH_DEV_DSP', '/dev/sound')
if check_cc(lib='ossaudio')(ctx, dependency_identifier):
return True
else:
return __fail_oss_check__(ctx)
fn = check_cc(header_name=soundcard_h,
defines=['PATH_DEV_DSP="/dev/dsp"',
'PATH_DEV_MIXER="/dev/mixer"'],
cflags='-I{0}'.format(include_dir),
fragment=load_fragment('oss_audio.c'))
def check_oss(ctx, dependency_identifier):
func = check_cc(fragment=load_fragment('oss_audio.c'), use='soundcard',
cflags=__get_osscflags__())
if func(ctx, dependency_identifier):
ctx.define('PATH_DEV_DSP', '/dev/dsp')
ctx.define('PATH_DEV_MIXER', '/dev/mixer')
if ctx.env.DEST_OS in ['openbsd', 'netbsd']:
return __check_oss_bsd_library__(ctx, dependency_identifier)
else:
return __check_oss_headers__(ctx, dependency_identifier)
return __fail_oss_check__(ctx)
return fn(ctx, dependency_identifier)

6
waftools/fragments/oss_audio.c
View File

@ -1,10 +1,4 @@
#if HAVE_SOUNDCARD_H
#include <soundcard.h>
#endif
#if HAVE_SYS_SOUNDCARD_H
#include <sys/soundcard.h>
#endif
int main(int argc, char **argv) {
return SNDCTL_DSP_SETFRAGMENT;

13
waftools/fragments/oss_audio_header.c
View File

@ -1,13 +0,0 @@
#if HAVE_SOUNDCARD_H
#include <soundcard.h>
#endif
#if HAVE_SYS_SOUNDCARD_H
#include <sys/soundcard.h>
#endif
#ifdef OPEN_SOUND_SYSTEM
int main(void) {{ return 0; }}
#else
#error Not the real thing
#endif

6
waftools/fragments/oss_audio_sunaudio.c Normal file
View File

@ -0,0 +1,6 @@
#include <soundcard.h>
int main(int argc, char **argv) {
return SNDCTL_DSP_SETFRAGMENT;
}

40
wscript
View File

@ -116,10 +116,6 @@ iconv support use --disable-iconv.",
'desc': 'w32 priority API',
'deps_any': [ 'os-win32', 'os-cygwin'],
'func': check_true
}, {
'name': 'soundcard',
'desc': 'soundcard.h',
'func': check_headers('soundcard.h', 'sys/soundcard.h')
}, {
'name': 'videoio',
'desc': 'videoio.h',
@ -386,10 +382,36 @@ audio_output_features = [
'desc': 'SDL (1.x)',
'deps_neg': [ 'sdl2' ],
'func': check_pkg_config('sdl')
}, {
'name': 'oss-audio-native',
'desc': 'OSS (platform-specific OSS implementation)',
'func': check_cc(header_name='sys/soundcard.h',
defines=['PATH_DEV_DSP="/dev/dsp"',
'PATH_DEV_MIXER="/dev/mixer"'],
fragment=load_fragment('oss_audio.c')),
'groups' : [ 'oss-audio' ]
}, {
'name': 'oss-audio-sunaudio',
'desc': 'OSS (emulation on top of SunAudio)',
'func': check_cc(header_name='soundcard.h',
lib='ossaudio',
defines=['PATH_DEV_DSP="/dev/sound"',
'PATH_DEV_MIXER="/dev/mixer"'],
fragment=load_fragment('oss_audio_sunaudio.c')),
'deps_neg': [ 'oss-audio-native' ],
'groups' : [ 'oss-audio' ]
}, {
'name': 'oss-audio-4front',
'desc': 'OSS (implementation from opensound.com)',
'func': check_oss_4front,
'deps_neg': [ 'oss-audio-native', 'oss-audio-sunaudio' ],
'groups' : [ 'oss-audio' ]
}, {
'name': '--oss-audio',
'desc': 'OSS audio output',
'func': check_oss
'func': check_true,
'deps_any': [ 'oss-audio-native', 'oss-audio-sunaudio',
'oss-audio-4front' ]
}, {
'name': '--audio-select',
'desc': 'audio select()',
@ -772,6 +794,14 @@ def configure(ctx):
ctx.parse_dependencies(scripting_features)
ctx.define('HAVE_SYS_SOUNDCARD_H',
'(HAVE_OSS_AUDIO_NATIVE || HAVE_OSS_AUDIO_4FRONT)',
quote=False)
ctx.define('HAVE_SOUNDCARD_H',
'HAVE_OSS_AUDIO_SUNAUDIO',
quote=False)
ctx.load('generators.headers')
if not ctx.dependency_satisfied('build-date'):