SF patch #489989 (Charles G Waldman) linuxaudiodev.c - fix initialization
The OSS Programmer's Reference (www.4front-tech.com) states: *Setting Sampling Parameters There are three parameters which affect the sound quality (and therefore memory and bandwidth requirements) of sampled audio data. These are: ** sample format (sometimes called number of bits) ** number of channels (mono or stereo), and ** sampling rate (speed) NOTE: It is important to always set these parameters in the above order. Setting sampling rate before the number of channels doesn't work with all devices.
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@ -258,15 +258,6 @@ lad_setparameters(lad_t *self, PyObject *args)
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return NULL;
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}
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if (ioctl(self->x_fd, SNDCTL_DSP_SPEED, &rate) == -1) {
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PyErr_SetFromErrno(LinuxAudioError);
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return NULL;
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}
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if (ioctl(self->x_fd, SNDCTL_DSP_CHANNELS, &nchannels) == -1) {
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PyErr_SetFromErrno(LinuxAudioError);
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return NULL;
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}
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for (n = 0; n < n_audio_types; n++)
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if (fmt == audio_types[n].a_fmt)
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break;
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@ -294,6 +285,14 @@ lad_setparameters(lad_t *self, PyObject *args)
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PyErr_SetFromErrno(LinuxAudioError);
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return NULL;
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}
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if (ioctl(self->x_fd, SNDCTL_DSP_CHANNELS, &nchannels) == -1) {
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PyErr_SetFromErrno(LinuxAudioError);
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return NULL;
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}
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if (ioctl(self->x_fd, SNDCTL_DSP_SPEED, &rate) == -1) {
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PyErr_SetFromErrno(LinuxAudioError);
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return NULL;
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}
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Py_INCREF(Py_None);
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return Py_None;
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