Hi,
I have a problem with Pulseaudio (0.9.21) + Vala (0.10.4). I've written
this small demonstration program:
$ cat test.vala
class MyClass : Object {
static void main(){
PulseAudio.SampleSpec spec = PulseAudio.SampleSpec() {
format = PulseAudio.SampleFormat.S32NE,
channels = 2,
rate = 44100
};
PulseAudio.MainLoop loop =
new PulseAudio.MainLoop();
PulseAudio.Context context =
new PulseAudio.Context(loop.get_api(), null);
PulseAudio.Stream stream =
new PulseAudio.Stream(context, "", spec);
int32[] data = new int32[10];
stream.write(data, sizeof(int32) * data.length);
}
}
$
I know that this program won't work (i.e. "run") but it should compile
just fine. However, I get this:
$ valac --vapidir=. --pkg=libpulse --pkg=posix test.vala
/home/alexander/test/test.vala.c: In function ?myclass_main?:
/home/alexander/test/test.vala.c:61: warning: passing argument 5 of ?pa_stream_write? makes integer from pointer without a cast
/usr/include/pulse/stream.h:503: note: expected ?int64_t? but argument is of type ?void *?
/home/alexander/test/test.vala.c:61: error: too many arguments to function ?pa_stream_write?
error: cc exited with status 256
Compilation failed: 1 error(s), 0 warning(s)
$
Looking at the generated C-Code reveals this:
$ valac --vapidir=. --pkg=libpulse --pkg=posix --ccode test.vala
$ cat test.c
[...]
pa_stream_write (stream, data, (gsize) (sizeof (gint32) * data_length1), NULL, NULL, 0, PA_SEEK_RELATIVE);
[...]
$
This is obviously wrong, since pa_stream_write takes 6 arguments not 7, see[1].
Is this a bug in PA's Vala bindings or in Vala itself?
Best regards
Alexander Kurtz
[1] http://0pointer.de/lennart/projects/pulseaudio/doxygen/stream_8h.html#a4fc69dec0cc202fcc174125dc88dada7
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