add initial structure

1 files changed, 220 insertions, 0 deletions

diff --git a/portaudio/src/SConscript b/portaudio/src/SConscript
new file mode 100644
index 0000000..5cc9152
--- /dev/null
+++ b/portaudio/src/SConscript
@@ -0,0 +1,220 @@
+import os.path, copy, sys
+
+def checkSymbol(conf, header, library=None, symbol=None, autoAdd=True, critical=False, pkgName=None):
+    """ Check for symbol in library, optionally look only for header.
+    @param conf: Configure instance.
+    @param header: The header file where the symbol is declared.
+    @param library: The library in which the symbol exists, if None it is taken to be the standard C library.
+    @param symbol: The symbol to look for, if None only the header will be looked up.
+    @param autoAdd: Automatically link with this library if check is positive.
+    @param critical: Raise on error?
+    @param pkgName: Optional name of pkg-config entry for library, to determine build parameters.
+    @return: True/False
+    """
+    origEnv = conf.env.Copy() # Copy unmodified environment so we can restore it upon error
+    env = conf.env
+    if library is None:
+        library = "c"   # Standard library
+        autoAdd = False
+
+    if pkgName is not None:
+        origLibs = copy.copy(env.get("LIBS", None))
+
+        try: env.ParseConfig("pkg-config --silence-errors %s --cflags --libs" % pkgName)
+        except: pass
+        else:
+            # I see no other way of checking that the parsing succeeded, if it did add no more linking parameters
+            if env.get("LIBS", None) != origLibs:
+                autoAdd = False
+
+    try:
+        if not conf.CheckCHeader(header, include_quotes="<>"):
+            raise ConfigurationError("missing header %s" % header)
+        if symbol is not None and not conf.CheckLib(library, symbol, language="C", autoadd=autoAdd):
+            raise ConfigurationError("missing symbol %s in library %s" % (symbol, library))
+    except ConfigurationError:
+        conf.env = origEnv
+        if not critical:
+            return False
+        raise
+
+    return True
+
+import SCons.Errors
+
+# Import common variables
+
+# Could use '#' to refer to top-level SConstruct directory, but looks like env.SConsignFile doesn't interpret this at least :(
+sconsDir = os.path.abspath(os.path.join("build", "scons"))
+
+try:
+    Import("Platform", "Posix", "ConfigurationError", "ApiVer")
+except SCons.Errors.UserError:
+    # The common objects must be exported first
+    SConscript(os.path.join(sconsDir, "SConscript_common"))
+    Import("Platform", "Posix", "ConfigurationError", "ApiVer")
+
+Import("env")
+
+# This will be manipulated
+env = env.Copy()
+
+# We operate with a set of needed libraries and optional libraries, the latter stemming from host API implementations.
+# For libraries of both types we record a set of values that is used to look for the library in question, during
+# configuration. If the corresponding library for a host API implementation isn't found, the implementation is left out.
+neededLibs = []
+optionalImpls = {}
+if Platform in Posix:
+    env.Append(CPPPATH=os.path.join("os", "unix"))
+    neededLibs += [("pthread", "pthread.h", "pthread_create"), ("m", "math.h", "sin")]
+    if env["useALSA"]:
+        optionalImpls["ALSA"] = ("asound", "alsa/asoundlib.h", "snd_pcm_open")
+    if env["useJACK"]:
+        optionalImpls["JACK"] = ("jack", "jack/jack.h", "jack_client_new")
+    if env["useOSS"]:
+        # TODO: It looks like the prefix for soundcard.h depends on the platform
+        optionalImpls["OSS"] = ("oss", "sys/soundcard.h", None)
+	if Platform == 'netbsd':
+	        optionalImpls["OSS"] = ("ossaudio", "sys/soundcard.h", "_oss_ioctl")
+    if env["useASIHPI"]:
+        optionalImpls["ASIHPI"] = ("hpi", "asihpi/hpi.h", "HPI_SubSysCreate")
+    if env["useCOREAUDIO"]:
+        optionalImpls["COREAUDIO"] = ("CoreAudio", "CoreAudio/CoreAudio.h", None)
+else:
+    raise ConfigurationError("unknown platform %s" % Platform)
+
+if Platform == "darwin":
+    env.Append(LINKFLAGS="-framework CoreFoundation -framework CoreServices -framework CoreAudio -framework AudioToolBox -framework AudioUnit")
+elif Platform == "cygwin":
+    env.Append(LIBS=["winmm"])
+elif Platform == "irix":
+    neededLibs +=  [("audio", "dmedia/audio.h", "alOpenPort"), ("dmedia", "dmedia/dmedia.h", "dmGetUST")]
+    env.Append(CPPDEFINES=["PA_USE_SGI"])
+
+def CheckCTypeSize(context, tp):
+    """ Check size of C type.
+    @param context: A configuration context.
+    @param tp: The type to check.
+    @return: Size of type, in bytes.
+    """
+    context.Message("Checking the size of C type %s..." % tp)
+    ret = context.TryRun("""
+#include <stdio.h>
+
+int main() {
+    printf("%%d", sizeof(%s));
+    return 0;
+}
+""" % tp, ".c")
+    if not ret[0]:
+        context.Result(" Couldn't obtain size of type %s!" % tp)
+        return None
+
+    assert ret[1]
+    sz = int(ret[1])
+    context.Result("%d" % sz)
+    return sz
+
+"""
+if sys.byteorder == "little":
+    env.Append(CPPDEFINES=["PA_LITTLE_ENDIAN"])
+elif sys.byteorder == "big":
+    env.Append(CPPDEFINES=["PA_BIG_ENDIAN"])
+else:
+    raise ConfigurationError("unknown byte order: %s" % sys.byteorder)
+"""
+if env["enableDebugOutput"]:
+    env.Append(CPPDEFINES=["PA_ENABLE_DEBUG_OUTPUT"])
+
+# Start configuration
+
+# Use an absolute path for conf_dir, otherwise it gets created both relative to current directory and build directory
+conf = env.Configure(log_file=os.path.join(sconsDir, "sconf.log"), custom_tests={"CheckCTypeSize": CheckCTypeSize},
+        conf_dir=os.path.join(sconsDir, ".sconf_temp"))
+conf.env.Append(CPPDEFINES=["SIZEOF_SHORT=%d" % conf.CheckCTypeSize("short")])
+conf.env.Append(CPPDEFINES=["SIZEOF_INT=%d" % conf.CheckCTypeSize("int")])
+conf.env.Append(CPPDEFINES=["SIZEOF_LONG=%d" % conf.CheckCTypeSize("long")])
+if checkSymbol(conf, "time.h", "rt", "clock_gettime"):
+    conf.env.Append(CPPDEFINES=["HAVE_CLOCK_GETTIME"])
+if checkSymbol(conf, "time.h", symbol="nanosleep"):
+    conf.env.Append(CPPDEFINES=["HAVE_NANOSLEEP"])
+if conf.CheckCHeader("sys/soundcard.h"):
+    conf.env.Append(CPPDEFINES=["HAVE_SYS_SOUNDCARD_H"])
+if conf.CheckCHeader("linux/soundcard.h"):
+    conf.env.Append(CPPDEFINES=["HAVE_LINUX_SOUNDCARD_H"])
+if conf.CheckCHeader("machine/soundcard.h"):
+    conf.env.Append(CPPDEFINES=["HAVE_MACHINE_SOUNDCARD_H"])
+
+# Look for needed libraries and link with them
+for lib, hdr, sym in neededLibs:
+    checkSymbol(conf, hdr, lib, sym, critical=True)
+# Look for host API libraries, if a library isn't found disable corresponding host API implementation.
+for name, val in optionalImpls.items():
+    lib, hdr, sym = val
+    if checkSymbol(conf, hdr, lib, sym, critical=False, pkgName=name.lower()):
+        conf.env.Append(CPPDEFINES=["PA_USE_%s=1" % name.upper()])
+    else:
+        del optionalImpls[name]
+
+# Configuration finished
+env = conf.Finish()
+
+# PA infrastructure
+CommonSources = [os.path.join("common", f) for f in "pa_allocation.c pa_converters.c pa_cpuload.c pa_dither.c pa_front.c \
+        pa_process.c pa_stream.c pa_trace.c pa_debugprint.c pa_ringbuffer.c".split()]
+CommonSources.append(os.path.join("hostapi", "skeleton", "pa_hostapi_skeleton.c"))
+
+# Host APIs implementations
+ImplSources = []
+if Platform in Posix:
+    ImplSources += [os.path.join("os", "unix", f) for f in "pa_unix_hostapis.c pa_unix_util.c".split()]
+
+if "ALSA" in optionalImpls:
+    ImplSources.append(os.path.join("hostapi", "alsa", "pa_linux_alsa.c"))
+if "JACK" in optionalImpls:
+    ImplSources.append(os.path.join("hostapi", "jack", "pa_jack.c"))
+if "OSS" in optionalImpls:
+    ImplSources.append(os.path.join("hostapi", "oss", "pa_unix_oss.c"))
+if "ASIHPI" in optionalImpls:
+    ImplSources.append(os.path.join("hostapi", "asihpi", "pa_linux_asihpi.c"))
+if "COREAUDIO" in optionalImpls:
+    ImplSources.append([os.path.join("hostapi", "coreaudio", f) for f in """
+	pa_mac_core.c  pa_mac_core_blocking.c  pa_mac_core_utilities.c 
+    """.split()])
+
+
+sources = CommonSources + ImplSources
+
+sharedLibEnv = env.Copy()
+if Platform in Posix:
+    # Add soname to library, this is so a reference is made to the versioned library in programs linking against libportaudio.so
+    if Platform != 'darwin':
+        sharedLibEnv.AppendUnique(SHLINKFLAGS="-Wl,-soname=libportaudio.so.%d" % int(ApiVer.split(".")[0]))
+sharedLib = sharedLibEnv.SharedLibrary(target="portaudio", source=sources)
+
+staticLib = env.StaticLibrary(target="portaudio", source=sources)
+
+if Platform in Posix:
+    prefix = env["prefix"]
+    includeDir = os.path.join(prefix, "include")
+    libDir = os.path.join(prefix, "lib")
+
+testNames = ["patest_sine", "paqa_devs", "paqa_errs", "patest1", "patest_buffer", "patest_callbackstop", "patest_clip", \
+        "patest_dither", "patest_hang", "patest_in_overflow", "patest_latency", "patest_leftright", "patest_longsine", \
+        "patest_many", "patest_maxsines", "patest_multi_sine", "patest_out_underflow", "patest_pink", "patest_prime", \
+        "patest_read_record", "patest_record", "patest_ringmix", "patest_saw", "patest_sine8", "patest_sine", \
+        "patest_sine_time", "patest_start_stop", "patest_stop", "patest_sync", "patest_toomanysines", \
+        "patest_underflow", "patest_wire", "patest_write_sine", "pa_devs", "pa_fuzz", "pa_minlat", \
+        "patest_sine_channelmaps",]
+
+# The test directory ("bin") should be in the top-level PA directory
+tests = [env.Program(target=os.path.join("#", "bin", name), source=[os.path.join("#", "test", name + ".c"),
+        staticLib]) for name in testNames]
+
+# Detect host APIs
+hostApis = []
+for cppdef in env["CPPDEFINES"]:
+    if cppdef.startswith("PA_USE_"):
+        hostApis.append(cppdef[7:-2])
+
+Return("sources", "sharedLib", "staticLib", "tests", "env", "hostApis")