--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-2.6.1/Modules/ossaudiodev.c Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,1136 @@
+/*
+ * ossaudiodev -- Python interface to the OSS (Open Sound System) API.
+ * This is the standard audio API for Linux and some
+ * flavours of BSD [XXX which ones?]; it is also available
+ * for a wide range of commercial Unices.
+ *
+ * Originally written by Peter Bosch, March 2000, as linuxaudiodev.
+ *
+ * Renamed to ossaudiodev and rearranged/revised/hacked up
+ * by Greg Ward <gward@python.net>, November 2002.
+ * Mixer interface by Nicholas FitzRoy-Dale <wzdd@lardcave.net>, Dec 2002.
+ *
+ * (c) 2000 Peter Bosch. All Rights Reserved.
+ * (c) 2002 Gregory P. Ward. All Rights Reserved.
+ * (c) 2002 Python Software Foundation. All Rights Reserved.
+ *
+ * XXX need a license statement
+ *
+ * $Id: ossaudiodev.c 64048 2008-06-09 04:58:54Z gregory.p.smith $
+ */
+
+#include "Python.h"
+#include "structmember.h"
+
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#else
+#define O_RDONLY 00
+#define O_WRONLY 01
+#endif
+
+#include <sys/ioctl.h>
+#include <sys/soundcard.h>
+
+#if defined(linux)
+
+#ifndef HAVE_STDINT_H
+typedef unsigned long uint32_t;
+#endif
+
+#elif defined(__FreeBSD__)
+
+# ifndef SNDCTL_DSP_CHANNELS
+# define SNDCTL_DSP_CHANNELS SOUND_PCM_WRITE_CHANNELS
+# endif
+
+#endif
+
+typedef struct {
+ PyObject_HEAD
+ char *devicename; /* name of the device file */
+ int fd; /* file descriptor */
+ int mode; /* file mode (O_RDONLY, etc.) */
+ int icount; /* input count */
+ int ocount; /* output count */
+ uint32_t afmts; /* audio formats supported by hardware */
+} oss_audio_t;
+
+typedef struct {
+ PyObject_HEAD
+ int fd; /* The open mixer device */
+} oss_mixer_t;
+
+
+static PyTypeObject OSSAudioType;
+static PyTypeObject OSSMixerType;
+
+static PyObject *OSSAudioError;
+
+
+/* ----------------------------------------------------------------------
+ * DSP object initialization/deallocation
+ */
+
+static oss_audio_t *
+newossobject(PyObject *arg)
+{
+ oss_audio_t *self;
+ int fd, afmts, imode;
+ char *devicename = NULL;
+ char *mode = NULL;
+
+ /* Two ways to call open():
+ open(device, mode) (for consistency with builtin open())
+ open(mode) (for backwards compatibility)
+ because the *first* argument is optional, parsing args is
+ a wee bit tricky. */
+ if (!PyArg_ParseTuple(arg, "s|s:open", &devicename, &mode))
+ return NULL;
+ if (mode == NULL) { /* only one arg supplied */
+ mode = devicename;
+ devicename = NULL;
+ }
+
+ if (strcmp(mode, "r") == 0)
+ imode = O_RDONLY;
+ else if (strcmp(mode, "w") == 0)
+ imode = O_WRONLY;
+ else if (strcmp(mode, "rw") == 0)
+ imode = O_RDWR;
+ else {
+ PyErr_SetString(OSSAudioError, "mode must be 'r', 'w', or 'rw'");
+ return NULL;
+ }
+
+ /* Open the correct device: either the 'device' argument,
+ or the AUDIODEV environment variable, or "/dev/dsp". */
+ if (devicename == NULL) { /* called with one arg */
+ devicename = getenv("AUDIODEV");
+ if (devicename == NULL) /* $AUDIODEV not set */
+ devicename = "/dev/dsp";
+ }
+
+ /* Open with O_NONBLOCK to avoid hanging on devices that only allow
+ one open at a time. This does *not* affect later I/O; OSS
+ provides a special ioctl() for non-blocking read/write, which is
+ exposed via oss_nonblock() below. */
+ if ((fd = open(devicename, imode|O_NONBLOCK)) == -1) {
+ PyErr_SetFromErrnoWithFilename(PyExc_IOError, devicename);
+ return NULL;
+ }
+
+ /* And (try to) put it back in blocking mode so we get the
+ expected write() semantics. */
+ if (fcntl(fd, F_SETFL, 0) == -1) {
+ close(fd);
+ PyErr_SetFromErrnoWithFilename(PyExc_IOError, devicename);
+ return NULL;
+ }
+
+ if (ioctl(fd, SNDCTL_DSP_GETFMTS, &afmts) == -1) {
+ PyErr_SetFromErrnoWithFilename(PyExc_IOError, devicename);
+ return NULL;
+ }
+ /* Create and initialize the object */
+ if ((self = PyObject_New(oss_audio_t, &OSSAudioType)) == NULL) {
+ close(fd);
+ return NULL;
+ }
+ self->devicename = devicename;
+ self->fd = fd;
+ self->mode = imode;
+ self->icount = self->ocount = 0;
+ self->afmts = afmts;
+ return self;
+}
+
+static void
+oss_dealloc(oss_audio_t *self)
+{
+ /* if already closed, don't reclose it */
+ if (self->fd != -1)
+ close(self->fd);
+ PyObject_Del(self);
+}
+
+
+/* ----------------------------------------------------------------------
+ * Mixer object initialization/deallocation
+ */
+
+static oss_mixer_t *
+newossmixerobject(PyObject *arg)
+{
+ char *devicename = NULL;
+ int fd;
+ oss_mixer_t *self;
+
+ if (!PyArg_ParseTuple(arg, "|s", &devicename)) {
+ return NULL;
+ }
+
+ if (devicename == NULL) {
+ devicename = getenv("MIXERDEV");
+ if (devicename == NULL) /* MIXERDEV not set */
+ devicename = "/dev/mixer";
+ }
+
+ if ((fd = open(devicename, O_RDWR)) == -1) {
+ PyErr_SetFromErrnoWithFilename(PyExc_IOError, devicename);
+ return NULL;
+ }
+
+ if ((self = PyObject_New(oss_mixer_t, &OSSMixerType)) == NULL) {
+ close(fd);
+ return NULL;
+ }
+
+ self->fd = fd;
+
+ return self;
+}
+
+static void
+oss_mixer_dealloc(oss_mixer_t *self)
+{
+ /* if already closed, don't reclose it */
+ if (self->fd != -1)
+ close(self->fd);
+ PyObject_Del(self);
+}
+
+
+/* Methods to wrap the OSS ioctls. The calling convention is pretty
+ simple:
+ nonblock() -> ioctl(fd, SNDCTL_DSP_NONBLOCK)
+ fmt = setfmt(fmt) -> ioctl(fd, SNDCTL_DSP_SETFMT, &fmt)
+ etc.
+*/
+
+
+/* ----------------------------------------------------------------------
+ * Helper functions
+ */
+
+/* _do_ioctl_1() is a private helper function used for the OSS ioctls --
+ SNDCTL_DSP_{SETFMT,CHANNELS,SPEED} -- that that are called from C
+ like this:
+ ioctl(fd, SNDCTL_DSP_cmd, &arg)
+
+ where arg is the value to set, and on return the driver sets arg to
+ the value that was actually set. Mapping this to Python is obvious:
+ arg = dsp.xxx(arg)
+*/
+static PyObject *
+_do_ioctl_1(int fd, PyObject *args, char *fname, int cmd)
+{
+ char argfmt[33] = "i:";
+ int arg;
+
+ assert(strlen(fname) <= 30);
+ strcat(argfmt, fname);
+ if (!PyArg_ParseTuple(args, argfmt, &arg))
+ return NULL;
+
+ if (ioctl(fd, cmd, &arg) == -1)
+ return PyErr_SetFromErrno(PyExc_IOError);
+ return PyInt_FromLong(arg);
+}
+
+
+/* _do_ioctl_1_internal() is a wrapper for ioctls that take no inputs
+ but return an output -- ie. we need to pass a pointer to a local C
+ variable so the driver can write its output there, but from Python
+ all we see is the return value. For example,
+ SOUND_MIXER_READ_DEVMASK returns a bitmask of available mixer
+ devices, but does not use the value of the parameter passed-in in any
+ way.
+*/
+static PyObject *
+_do_ioctl_1_internal(int fd, PyObject *args, char *fname, int cmd)
+{
+ char argfmt[32] = ":";
+ int arg = 0;
+
+ assert(strlen(fname) <= 30);
+ strcat(argfmt, fname);
+ if (!PyArg_ParseTuple(args, argfmt, &arg))
+ return NULL;
+
+ if (ioctl(fd, cmd, &arg) == -1)
+ return PyErr_SetFromErrno(PyExc_IOError);
+ return PyInt_FromLong(arg);
+}
+
+
+
+/* _do_ioctl_0() is a private helper for the no-argument ioctls:
+ SNDCTL_DSP_{SYNC,RESET,POST}. */
+static PyObject *
+_do_ioctl_0(int fd, PyObject *args, char *fname, int cmd)
+{
+ char argfmt[32] = ":";
+ int rv;
+
+ assert(strlen(fname) <= 30);
+ strcat(argfmt, fname);
+ if (!PyArg_ParseTuple(args, argfmt))
+ return NULL;
+
+ /* According to hannu@opensound.com, all three of the ioctls that
+ use this function can block, so release the GIL. This is
+ especially important for SYNC, which can block for several
+ seconds. */
+ Py_BEGIN_ALLOW_THREADS
+ rv = ioctl(fd, cmd, 0);
+ Py_END_ALLOW_THREADS
+
+ if (rv == -1)
+ return PyErr_SetFromErrno(PyExc_IOError);
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+
+/* ----------------------------------------------------------------------
+ * Methods of DSP objects (OSSAudioType)
+ */
+
+static PyObject *
+oss_nonblock(oss_audio_t *self, PyObject *unused)
+{
+ /* Hmmm: it doesn't appear to be possible to return to blocking
+ mode once we're in non-blocking mode! */
+ if (ioctl(self->fd, SNDCTL_DSP_NONBLOCK, NULL) == -1)
+ return PyErr_SetFromErrno(PyExc_IOError);
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyObject *
+oss_setfmt(oss_audio_t *self, PyObject *args)
+{
+ return _do_ioctl_1(self->fd, args, "setfmt", SNDCTL_DSP_SETFMT);
+}
+
+static PyObject *
+oss_getfmts(oss_audio_t *self, PyObject *unused)
+{
+ int mask;
+ if (ioctl(self->fd, SNDCTL_DSP_GETFMTS, &mask) == -1)
+ return PyErr_SetFromErrno(PyExc_IOError);
+ return PyInt_FromLong(mask);
+}
+
+static PyObject *
+oss_channels(oss_audio_t *self, PyObject *args)
+{
+ return _do_ioctl_1(self->fd, args, "channels", SNDCTL_DSP_CHANNELS);
+}
+
+static PyObject *
+oss_speed(oss_audio_t *self, PyObject *args)
+{
+ return _do_ioctl_1(self->fd, args, "speed", SNDCTL_DSP_SPEED);
+}
+
+static PyObject *
+oss_sync(oss_audio_t *self, PyObject *args)
+{
+ return _do_ioctl_0(self->fd, args, "sync", SNDCTL_DSP_SYNC);
+}
+
+static PyObject *
+oss_reset(oss_audio_t *self, PyObject *args)
+{
+ return _do_ioctl_0(self->fd, args, "reset", SNDCTL_DSP_RESET);
+}
+
+static PyObject *
+oss_post(oss_audio_t *self, PyObject *args)
+{
+ return _do_ioctl_0(self->fd, args, "post", SNDCTL_DSP_POST);
+}
+
+
+/* Regular file methods: read(), write(), close(), etc. as well
+ as one convenience method, writeall(). */
+
+static PyObject *
+oss_read(oss_audio_t *self, PyObject *args)
+{
+ int size, count;
+ char *cp;
+ PyObject *rv;
+
+ if (!PyArg_ParseTuple(args, "i:read", &size))
+ return NULL;
+ rv = PyString_FromStringAndSize(NULL, size);
+ if (rv == NULL)
+ return NULL;
+ cp = PyString_AS_STRING(rv);
+
+ Py_BEGIN_ALLOW_THREADS
+ count = read(self->fd, cp, size);
+ Py_END_ALLOW_THREADS
+
+ if (count < 0) {
+ PyErr_SetFromErrno(PyExc_IOError);
+ Py_DECREF(rv);
+ return NULL;
+ }
+ self->icount += count;
+ _PyString_Resize(&rv, count);
+ return rv;
+}
+
+static PyObject *
+oss_write(oss_audio_t *self, PyObject *args)
+{
+ char *cp;
+ int rv, size;
+
+ if (!PyArg_ParseTuple(args, "s#:write", &cp, &size)) {
+ return NULL;
+ }
+
+ Py_BEGIN_ALLOW_THREADS
+ rv = write(self->fd, cp, size);
+ Py_END_ALLOW_THREADS
+
+ if (rv == -1) {
+ return PyErr_SetFromErrno(PyExc_IOError);
+ } else {
+ self->ocount += rv;
+ }
+ return PyInt_FromLong(rv);
+}
+
+static PyObject *
+oss_writeall(oss_audio_t *self, PyObject *args)
+{
+ char *cp;
+ int rv, size;
+ fd_set write_set_fds;
+ int select_rv;
+
+ /* NB. writeall() is only useful in non-blocking mode: according to
+ Guenter Geiger <geiger@xdv.org> on the linux-audio-dev list
+ (http://eca.cx/lad/2002/11/0380.html), OSS guarantees that
+ write() in blocking mode consumes the whole buffer. In blocking
+ mode, the behaviour of write() and writeall() from Python is
+ indistinguishable. */
+
+ if (!PyArg_ParseTuple(args, "s#:write", &cp, &size))
+ return NULL;
+
+ /* use select to wait for audio device to be available */
+ FD_ZERO(&write_set_fds);
+ FD_SET(self->fd, &write_set_fds);
+
+ while (size > 0) {
+ Py_BEGIN_ALLOW_THREADS
+ select_rv = select(self->fd+1, NULL, &write_set_fds, NULL, NULL);
+ Py_END_ALLOW_THREADS
+ assert(select_rv != 0); /* no timeout, can't expire */
+ if (select_rv == -1)
+ return PyErr_SetFromErrno(PyExc_IOError);
+
+ Py_BEGIN_ALLOW_THREADS
+ rv = write(self->fd, cp, size);
+ Py_END_ALLOW_THREADS
+ if (rv == -1) {
+ if (errno == EAGAIN) { /* buffer is full, try again */
+ errno = 0;
+ continue;
+ } else /* it's a real error */
+ return PyErr_SetFromErrno(PyExc_IOError);
+ } else { /* wrote rv bytes */
+ self->ocount += rv;
+ size -= rv;
+ cp += rv;
+ }
+ }
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyObject *
+oss_close(oss_audio_t *self, PyObject *unused)
+{
+ if (self->fd >= 0) {
+ Py_BEGIN_ALLOW_THREADS
+ close(self->fd);
+ Py_END_ALLOW_THREADS
+ self->fd = -1;
+ }
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyObject *
+oss_fileno(oss_audio_t *self, PyObject *unused)
+{
+ return PyInt_FromLong(self->fd);
+}
+
+
+/* Convenience methods: these generally wrap a couple of ioctls into one
+ common task. */
+
+static PyObject *
+oss_setparameters(oss_audio_t *self, PyObject *args)
+{
+ int wanted_fmt, wanted_channels, wanted_rate, strict=0;
+ int fmt, channels, rate;
+ PyObject * rv; /* return tuple (fmt, channels, rate) */
+
+ if (!PyArg_ParseTuple(args, "iii|i:setparameters",
+ &wanted_fmt, &wanted_channels, &wanted_rate,
+ &strict))
+ return NULL;
+
+ fmt = wanted_fmt;
+ if (ioctl(self->fd, SNDCTL_DSP_SETFMT, &fmt) == -1) {
+ return PyErr_SetFromErrno(PyExc_IOError);
+ }
+ if (strict && fmt != wanted_fmt) {
+ return PyErr_Format
+ (OSSAudioError,
+ "unable to set requested format (wanted %d, got %d)",
+ wanted_fmt, fmt);
+ }
+
+ channels = wanted_channels;
+ if (ioctl(self->fd, SNDCTL_DSP_CHANNELS, &channels) == -1) {
+ return PyErr_SetFromErrno(PyExc_IOError);
+ }
+ if (strict && channels != wanted_channels) {
+ return PyErr_Format
+ (OSSAudioError,
+ "unable to set requested channels (wanted %d, got %d)",
+ wanted_channels, channels);
+ }
+
+ rate = wanted_rate;
+ if (ioctl(self->fd, SNDCTL_DSP_SPEED, &rate) == -1) {
+ return PyErr_SetFromErrno(PyExc_IOError);
+ }
+ if (strict && rate != wanted_rate) {
+ return PyErr_Format
+ (OSSAudioError,
+ "unable to set requested rate (wanted %d, got %d)",
+ wanted_rate, rate);
+ }
+
+ /* Construct the return value: a (fmt, channels, rate) tuple that
+ tells what the audio hardware was actually set to. */
+ rv = PyTuple_New(3);
+ if (rv == NULL)
+ return NULL;
+ PyTuple_SET_ITEM(rv, 0, PyInt_FromLong(fmt));
+ PyTuple_SET_ITEM(rv, 1, PyInt_FromLong(channels));
+ PyTuple_SET_ITEM(rv, 2, PyInt_FromLong(rate));
+ return rv;
+}
+
+static int
+_ssize(oss_audio_t *self, int *nchannels, int *ssize)
+{
+ int fmt;
+
+ fmt = 0;
+ if (ioctl(self->fd, SNDCTL_DSP_SETFMT, &fmt) < 0)
+ return -errno;
+
+ switch (fmt) {
+ case AFMT_MU_LAW:
+ case AFMT_A_LAW:
+ case AFMT_U8:
+ case AFMT_S8:
+ *ssize = 1; /* 8 bit formats: 1 byte */
+ break;
+ case AFMT_S16_LE:
+ case AFMT_S16_BE:
+ case AFMT_U16_LE:
+ case AFMT_U16_BE:
+ *ssize = 2; /* 16 bit formats: 2 byte */
+ break;
+ case AFMT_MPEG:
+ case AFMT_IMA_ADPCM:
+ default:
+ return -EOPNOTSUPP;
+ }
+ if (ioctl(self->fd, SNDCTL_DSP_CHANNELS, nchannels) < 0)
+ return -errno;
+ return 0;
+}
+
+
+/* bufsize returns the size of the hardware audio buffer in number
+ of samples */
+static PyObject *
+oss_bufsize(oss_audio_t *self, PyObject *unused)
+{
+ audio_buf_info ai;
+ int nchannels=0, ssize=0;
+
+ if (_ssize(self, &nchannels, &ssize) < 0 || !nchannels || !ssize) {
+ PyErr_SetFromErrno(PyExc_IOError);
+ return NULL;
+ }
+ if (ioctl(self->fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
+ PyErr_SetFromErrno(PyExc_IOError);
+ return NULL;
+ }
+ return PyInt_FromLong((ai.fragstotal * ai.fragsize) / (nchannels * ssize));
+}
+
+/* obufcount returns the number of samples that are available in the
+ hardware for playing */
+static PyObject *
+oss_obufcount(oss_audio_t *self, PyObject *unused)
+{
+ audio_buf_info ai;
+ int nchannels=0, ssize=0;
+
+ if (_ssize(self, &nchannels, &ssize) < 0 || !nchannels || !ssize) {
+ PyErr_SetFromErrno(PyExc_IOError);
+ return NULL;
+ }
+ if (ioctl(self->fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
+ PyErr_SetFromErrno(PyExc_IOError);
+ return NULL;
+ }
+ return PyInt_FromLong((ai.fragstotal * ai.fragsize - ai.bytes) /
+ (ssize * nchannels));
+}
+
+/* obufcount returns the number of samples that can be played without
+ blocking */
+static PyObject *
+oss_obuffree(oss_audio_t *self, PyObject *unused)
+{
+ audio_buf_info ai;
+ int nchannels=0, ssize=0;
+
+ if (_ssize(self, &nchannels, &ssize) < 0 || !nchannels || !ssize) {
+ PyErr_SetFromErrno(PyExc_IOError);
+ return NULL;
+ }
+ if (ioctl(self->fd, SNDCTL_DSP_GETOSPACE, &ai) < 0) {
+ PyErr_SetFromErrno(PyExc_IOError);
+ return NULL;
+ }
+ return PyInt_FromLong(ai.bytes / (ssize * nchannels));
+}
+
+static PyObject *
+oss_getptr(oss_audio_t *self, PyObject *unused)
+{
+ count_info info;
+ int req;
+
+ if (self->mode == O_RDONLY)
+ req = SNDCTL_DSP_GETIPTR;
+ else
+ req = SNDCTL_DSP_GETOPTR;
+ if (ioctl(self->fd, req, &info) == -1) {
+ PyErr_SetFromErrno(PyExc_IOError);
+ return NULL;
+ }
+ return Py_BuildValue("iii", info.bytes, info.blocks, info.ptr);
+}
+
+
+/* ----------------------------------------------------------------------
+ * Methods of mixer objects (OSSMixerType)
+ */
+
+static PyObject *
+oss_mixer_close(oss_mixer_t *self, PyObject *unused)
+{
+ if (self->fd >= 0) {
+ close(self->fd);
+ self->fd = -1;
+ }
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyObject *
+oss_mixer_fileno(oss_mixer_t *self, PyObject *unused)
+{
+ return PyInt_FromLong(self->fd);
+}
+
+/* Simple mixer interface methods */
+
+static PyObject *
+oss_mixer_controls(oss_mixer_t *self, PyObject *args)
+{
+ return _do_ioctl_1_internal(self->fd, args, "controls",
+ SOUND_MIXER_READ_DEVMASK);
+}
+
+static PyObject *
+oss_mixer_stereocontrols(oss_mixer_t *self, PyObject *args)
+{
+ return _do_ioctl_1_internal(self->fd, args, "stereocontrols",
+ SOUND_MIXER_READ_STEREODEVS);
+}
+
+static PyObject *
+oss_mixer_reccontrols(oss_mixer_t *self, PyObject *args)
+{
+ return _do_ioctl_1_internal(self->fd, args, "reccontrols",
+ SOUND_MIXER_READ_RECMASK);
+}
+
+static PyObject *
+oss_mixer_get(oss_mixer_t *self, PyObject *args)
+{
+ int channel, volume;
+
+ /* Can't use _do_ioctl_1 because of encoded arg thingy. */
+ if (!PyArg_ParseTuple(args, "i:get", &channel))
+ return NULL;
+
+ if (channel < 0 || channel > SOUND_MIXER_NRDEVICES) {
+ PyErr_SetString(OSSAudioError, "Invalid mixer channel specified.");
+ return NULL;
+ }
+
+ if (ioctl(self->fd, MIXER_READ(channel), &volume) == -1)
+ return PyErr_SetFromErrno(PyExc_IOError);
+
+ return Py_BuildValue("(ii)", volume & 0xff, (volume & 0xff00) >> 8);
+}
+
+static PyObject *
+oss_mixer_set(oss_mixer_t *self, PyObject *args)
+{
+ int channel, volume, leftVol, rightVol;
+
+ /* Can't use _do_ioctl_1 because of encoded arg thingy. */
+ if (!PyArg_ParseTuple(args, "i(ii):set", &channel, &leftVol, &rightVol))
+ return NULL;
+
+ if (channel < 0 || channel > SOUND_MIXER_NRDEVICES) {
+ PyErr_SetString(OSSAudioError, "Invalid mixer channel specified.");
+ return NULL;
+ }
+
+ if (leftVol < 0 || rightVol < 0 || leftVol > 100 || rightVol > 100) {
+ PyErr_SetString(OSSAudioError, "Volumes must be between 0 and 100.");
+ return NULL;
+ }
+
+ volume = (rightVol << 8) | leftVol;
+
+ if (ioctl(self->fd, MIXER_WRITE(channel), &volume) == -1)
+ return PyErr_SetFromErrno(PyExc_IOError);
+
+ return Py_BuildValue("(ii)", volume & 0xff, (volume & 0xff00) >> 8);
+}
+
+static PyObject *
+oss_mixer_get_recsrc(oss_mixer_t *self, PyObject *args)
+{
+ return _do_ioctl_1_internal(self->fd, args, "get_recsrc",
+ SOUND_MIXER_READ_RECSRC);
+}
+
+static PyObject *
+oss_mixer_set_recsrc(oss_mixer_t *self, PyObject *args)
+{
+ return _do_ioctl_1(self->fd, args, "set_recsrc",
+ SOUND_MIXER_WRITE_RECSRC);
+}
+
+
+/* ----------------------------------------------------------------------
+ * Method tables and other bureaucracy
+ */
+
+static PyMethodDef oss_methods[] = {
+ /* Regular file methods */
+ { "read", (PyCFunction)oss_read, METH_VARARGS },
+ { "write", (PyCFunction)oss_write, METH_VARARGS },
+ { "writeall", (PyCFunction)oss_writeall, METH_VARARGS },
+ { "close", (PyCFunction)oss_close, METH_NOARGS },
+ { "fileno", (PyCFunction)oss_fileno, METH_NOARGS },
+
+ /* Simple ioctl wrappers */
+ { "nonblock", (PyCFunction)oss_nonblock, METH_NOARGS },
+ { "setfmt", (PyCFunction)oss_setfmt, METH_VARARGS },
+ { "getfmts", (PyCFunction)oss_getfmts, METH_NOARGS },
+ { "channels", (PyCFunction)oss_channels, METH_VARARGS },
+ { "speed", (PyCFunction)oss_speed, METH_VARARGS },
+ { "sync", (PyCFunction)oss_sync, METH_VARARGS },
+ { "reset", (PyCFunction)oss_reset, METH_VARARGS },
+ { "post", (PyCFunction)oss_post, METH_VARARGS },
+
+ /* Convenience methods -- wrap a couple of ioctls together */
+ { "setparameters", (PyCFunction)oss_setparameters, METH_VARARGS },
+ { "bufsize", (PyCFunction)oss_bufsize, METH_NOARGS },
+ { "obufcount", (PyCFunction)oss_obufcount, METH_NOARGS },
+ { "obuffree", (PyCFunction)oss_obuffree, METH_NOARGS },
+ { "getptr", (PyCFunction)oss_getptr, METH_NOARGS },
+
+ /* Aliases for backwards compatibility */
+ { "flush", (PyCFunction)oss_sync, METH_VARARGS },
+
+ { NULL, NULL} /* sentinel */
+};
+
+static PyMethodDef oss_mixer_methods[] = {
+ /* Regular file method - OSS mixers are ioctl-only interface */
+ { "close", (PyCFunction)oss_mixer_close, METH_NOARGS },
+ { "fileno", (PyCFunction)oss_mixer_fileno, METH_NOARGS },
+
+ /* Simple ioctl wrappers */
+ { "controls", (PyCFunction)oss_mixer_controls, METH_VARARGS },
+ { "stereocontrols", (PyCFunction)oss_mixer_stereocontrols, METH_VARARGS},
+ { "reccontrols", (PyCFunction)oss_mixer_reccontrols, METH_VARARGS},
+ { "get", (PyCFunction)oss_mixer_get, METH_VARARGS },
+ { "set", (PyCFunction)oss_mixer_set, METH_VARARGS },
+ { "get_recsrc", (PyCFunction)oss_mixer_get_recsrc, METH_VARARGS },
+ { "set_recsrc", (PyCFunction)oss_mixer_set_recsrc, METH_VARARGS },
+
+ { NULL, NULL}
+};
+
+static PyObject *
+oss_getattr(oss_audio_t *self, char *name)
+{
+ PyObject * rval = NULL;
+ if (strcmp(name, "closed") == 0) {
+ rval = (self->fd == -1) ? Py_True : Py_False;
+ Py_INCREF(rval);
+ }
+ else if (strcmp(name, "name") == 0) {
+ rval = PyString_FromString(self->devicename);
+ }
+ else if (strcmp(name, "mode") == 0) {
+ /* No need for a "default" in this switch: from newossobject(),
+ self->mode can only be one of these three values. */
+ switch(self->mode) {
+ case O_RDONLY:
+ rval = PyString_FromString("r");
+ break;
+ case O_RDWR:
+ rval = PyString_FromString("rw");
+ break;
+ case O_WRONLY:
+ rval = PyString_FromString("w");
+ break;
+ }
+ }
+ else {
+ rval = Py_FindMethod(oss_methods, (PyObject *)self, name);
+ }
+ return rval;
+}
+
+static PyObject *
+oss_mixer_getattr(oss_mixer_t *self, char *name)
+{
+ return Py_FindMethod(oss_mixer_methods, (PyObject *)self, name);
+}
+
+static PyTypeObject OSSAudioType = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "ossaudiodev.oss_audio_device", /*tp_name*/
+ sizeof(oss_audio_t), /*tp_size*/
+ 0, /*tp_itemsize*/
+ /* methods */
+ (destructor)oss_dealloc, /*tp_dealloc*/
+ 0, /*tp_print*/
+ (getattrfunc)oss_getattr, /*tp_getattr*/
+ 0, /*tp_setattr*/
+ 0, /*tp_compare*/
+ 0, /*tp_repr*/
+};
+
+static PyTypeObject OSSMixerType = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ "ossaudiodev.oss_mixer_device", /*tp_name*/
+ sizeof(oss_mixer_t), /*tp_size*/
+ 0, /*tp_itemsize*/
+ /* methods */
+ (destructor)oss_mixer_dealloc, /*tp_dealloc*/
+ 0, /*tp_print*/
+ (getattrfunc)oss_mixer_getattr, /*tp_getattr*/
+ 0, /*tp_setattr*/
+ 0, /*tp_compare*/
+ 0, /*tp_repr*/
+};
+
+
+static PyObject *
+ossopen(PyObject *self, PyObject *args)
+{
+ return (PyObject *)newossobject(args);
+}
+
+static PyObject *
+ossopenmixer(PyObject *self, PyObject *args)
+{
+ return (PyObject *)newossmixerobject(args);
+}
+
+static PyMethodDef ossaudiodev_methods[] = {
+ { "open", ossopen, METH_VARARGS },
+ { "openmixer", ossopenmixer, METH_VARARGS },
+ { 0, 0 },
+};
+
+
+#define _EXPORT_INT(mod, name) \
+ if (PyModule_AddIntConstant(mod, #name, (long) (name)) == -1) return;
+
+
+static char *control_labels[] = SOUND_DEVICE_LABELS;
+static char *control_names[] = SOUND_DEVICE_NAMES;
+
+
+static int
+build_namelists (PyObject *module)
+{
+ PyObject *labels;
+ PyObject *names;
+ PyObject *s;
+ int num_controls;
+ int i;
+
+ num_controls = sizeof(control_labels) / sizeof(control_labels[0]);
+ assert(num_controls == sizeof(control_names) / sizeof(control_names[0]));
+
+ labels = PyList_New(num_controls);
+ names = PyList_New(num_controls);
+ if (labels == NULL || names == NULL)
+ goto error2;
+ for (i = 0; i < num_controls; i++) {
+ s = PyString_FromString(control_labels[i]);
+ if (s == NULL)
+ goto error2;
+ PyList_SET_ITEM(labels, i, s);
+
+ s = PyString_FromString(control_names[i]);
+ if (s == NULL)
+ goto error2;
+ PyList_SET_ITEM(names, i, s);
+ }
+
+ if (PyModule_AddObject(module, "control_labels", labels) == -1)
+ goto error2;
+ if (PyModule_AddObject(module, "control_names", names) == -1)
+ goto error1;
+
+ return 0;
+
+error2:
+ Py_XDECREF(labels);
+error1:
+ Py_XDECREF(names);
+ return -1;
+}
+
+
+void
+initossaudiodev(void)
+{
+ PyObject *m;
+
+ m = Py_InitModule("ossaudiodev", ossaudiodev_methods);
+ if (m == NULL)
+ return;
+
+ OSSAudioError = PyErr_NewException("ossaudiodev.OSSAudioError",
+ NULL, NULL);
+ if (OSSAudioError) {
+ /* Each call to PyModule_AddObject decrefs it; compensate: */
+ Py_INCREF(OSSAudioError);
+ Py_INCREF(OSSAudioError);
+ PyModule_AddObject(m, "error", OSSAudioError);
+ PyModule_AddObject(m, "OSSAudioError", OSSAudioError);
+ }
+
+ /* Build 'control_labels' and 'control_names' lists and add them
+ to the module. */
+ if (build_namelists(m) == -1) /* XXX what to do here? */
+ return;
+
+ /* Expose the audio format numbers -- essential! */
+ _EXPORT_INT(m, AFMT_QUERY);
+ _EXPORT_INT(m, AFMT_MU_LAW);
+ _EXPORT_INT(m, AFMT_A_LAW);
+ _EXPORT_INT(m, AFMT_IMA_ADPCM);
+ _EXPORT_INT(m, AFMT_U8);
+ _EXPORT_INT(m, AFMT_S16_LE);
+ _EXPORT_INT(m, AFMT_S16_BE);
+ _EXPORT_INT(m, AFMT_S8);
+ _EXPORT_INT(m, AFMT_U16_LE);
+ _EXPORT_INT(m, AFMT_U16_BE);
+ _EXPORT_INT(m, AFMT_MPEG);
+#ifdef AFMT_AC3
+ _EXPORT_INT(m, AFMT_AC3);
+#endif
+#ifdef AFMT_S16_NE
+ _EXPORT_INT(m, AFMT_S16_NE);
+#endif
+#ifdef AFMT_U16_NE
+ _EXPORT_INT(m, AFMT_U16_NE);
+#endif
+#ifdef AFMT_S32_LE
+ _EXPORT_INT(m, AFMT_S32_LE);
+#endif
+#ifdef AFMT_S32_BE
+ _EXPORT_INT(m, AFMT_S32_BE);
+#endif
+#ifdef AFMT_MPEG
+ _EXPORT_INT(m, AFMT_MPEG);
+#endif
+
+ /* Expose the sound mixer device numbers. */
+ _EXPORT_INT(m, SOUND_MIXER_NRDEVICES);
+ _EXPORT_INT(m, SOUND_MIXER_VOLUME);
+ _EXPORT_INT(m, SOUND_MIXER_BASS);
+ _EXPORT_INT(m, SOUND_MIXER_TREBLE);
+ _EXPORT_INT(m, SOUND_MIXER_SYNTH);
+ _EXPORT_INT(m, SOUND_MIXER_PCM);
+ _EXPORT_INT(m, SOUND_MIXER_SPEAKER);
+ _EXPORT_INT(m, SOUND_MIXER_LINE);
+ _EXPORT_INT(m, SOUND_MIXER_MIC);
+ _EXPORT_INT(m, SOUND_MIXER_CD);
+ _EXPORT_INT(m, SOUND_MIXER_IMIX);
+ _EXPORT_INT(m, SOUND_MIXER_ALTPCM);
+ _EXPORT_INT(m, SOUND_MIXER_RECLEV);
+ _EXPORT_INT(m, SOUND_MIXER_IGAIN);
+ _EXPORT_INT(m, SOUND_MIXER_OGAIN);
+ _EXPORT_INT(m, SOUND_MIXER_LINE1);
+ _EXPORT_INT(m, SOUND_MIXER_LINE2);
+ _EXPORT_INT(m, SOUND_MIXER_LINE3);
+#ifdef SOUND_MIXER_DIGITAL1
+ _EXPORT_INT(m, SOUND_MIXER_DIGITAL1);
+#endif
+#ifdef SOUND_MIXER_DIGITAL2
+ _EXPORT_INT(m, SOUND_MIXER_DIGITAL2);
+#endif
+#ifdef SOUND_MIXER_DIGITAL3
+ _EXPORT_INT(m, SOUND_MIXER_DIGITAL3);
+#endif
+#ifdef SOUND_MIXER_PHONEIN
+ _EXPORT_INT(m, SOUND_MIXER_PHONEIN);
+#endif
+#ifdef SOUND_MIXER_PHONEOUT
+ _EXPORT_INT(m, SOUND_MIXER_PHONEOUT);
+#endif
+#ifdef SOUND_MIXER_VIDEO
+ _EXPORT_INT(m, SOUND_MIXER_VIDEO);
+#endif
+#ifdef SOUND_MIXER_RADIO
+ _EXPORT_INT(m, SOUND_MIXER_RADIO);
+#endif
+#ifdef SOUND_MIXER_MONITOR
+ _EXPORT_INT(m, SOUND_MIXER_MONITOR);
+#endif
+
+ /* Expose all the ioctl numbers for masochists who like to do this
+ stuff directly. */
+ _EXPORT_INT(m, SNDCTL_COPR_HALT);
+ _EXPORT_INT(m, SNDCTL_COPR_LOAD);
+ _EXPORT_INT(m, SNDCTL_COPR_RCODE);
+ _EXPORT_INT(m, SNDCTL_COPR_RCVMSG);
+ _EXPORT_INT(m, SNDCTL_COPR_RDATA);
+ _EXPORT_INT(m, SNDCTL_COPR_RESET);
+ _EXPORT_INT(m, SNDCTL_COPR_RUN);
+ _EXPORT_INT(m, SNDCTL_COPR_SENDMSG);
+ _EXPORT_INT(m, SNDCTL_COPR_WCODE);
+ _EXPORT_INT(m, SNDCTL_COPR_WDATA);
+#ifdef SNDCTL_DSP_BIND_CHANNEL
+ _EXPORT_INT(m, SNDCTL_DSP_BIND_CHANNEL);
+#endif
+ _EXPORT_INT(m, SNDCTL_DSP_CHANNELS);
+ _EXPORT_INT(m, SNDCTL_DSP_GETBLKSIZE);
+ _EXPORT_INT(m, SNDCTL_DSP_GETCAPS);
+#ifdef SNDCTL_DSP_GETCHANNELMASK
+ _EXPORT_INT(m, SNDCTL_DSP_GETCHANNELMASK);
+#endif
+ _EXPORT_INT(m, SNDCTL_DSP_GETFMTS);
+ _EXPORT_INT(m, SNDCTL_DSP_GETIPTR);
+ _EXPORT_INT(m, SNDCTL_DSP_GETISPACE);
+#ifdef SNDCTL_DSP_GETODELAY
+ _EXPORT_INT(m, SNDCTL_DSP_GETODELAY);
+#endif
+ _EXPORT_INT(m, SNDCTL_DSP_GETOPTR);
+ _EXPORT_INT(m, SNDCTL_DSP_GETOSPACE);
+#ifdef SNDCTL_DSP_GETSPDIF
+ _EXPORT_INT(m, SNDCTL_DSP_GETSPDIF);
+#endif
+ _EXPORT_INT(m, SNDCTL_DSP_GETTRIGGER);
+ _EXPORT_INT(m, SNDCTL_DSP_MAPINBUF);
+ _EXPORT_INT(m, SNDCTL_DSP_MAPOUTBUF);
+ _EXPORT_INT(m, SNDCTL_DSP_NONBLOCK);
+ _EXPORT_INT(m, SNDCTL_DSP_POST);
+#ifdef SNDCTL_DSP_PROFILE
+ _EXPORT_INT(m, SNDCTL_DSP_PROFILE);
+#endif
+ _EXPORT_INT(m, SNDCTL_DSP_RESET);
+ _EXPORT_INT(m, SNDCTL_DSP_SAMPLESIZE);
+ _EXPORT_INT(m, SNDCTL_DSP_SETDUPLEX);
+ _EXPORT_INT(m, SNDCTL_DSP_SETFMT);
+ _EXPORT_INT(m, SNDCTL_DSP_SETFRAGMENT);
+#ifdef SNDCTL_DSP_SETSPDIF
+ _EXPORT_INT(m, SNDCTL_DSP_SETSPDIF);
+#endif
+ _EXPORT_INT(m, SNDCTL_DSP_SETSYNCRO);
+ _EXPORT_INT(m, SNDCTL_DSP_SETTRIGGER);
+ _EXPORT_INT(m, SNDCTL_DSP_SPEED);
+ _EXPORT_INT(m, SNDCTL_DSP_STEREO);
+ _EXPORT_INT(m, SNDCTL_DSP_SUBDIVIDE);
+ _EXPORT_INT(m, SNDCTL_DSP_SYNC);
+ _EXPORT_INT(m, SNDCTL_FM_4OP_ENABLE);
+ _EXPORT_INT(m, SNDCTL_FM_LOAD_INSTR);
+ _EXPORT_INT(m, SNDCTL_MIDI_INFO);
+ _EXPORT_INT(m, SNDCTL_MIDI_MPUCMD);
+ _EXPORT_INT(m, SNDCTL_MIDI_MPUMODE);
+ _EXPORT_INT(m, SNDCTL_MIDI_PRETIME);
+ _EXPORT_INT(m, SNDCTL_SEQ_CTRLRATE);
+ _EXPORT_INT(m, SNDCTL_SEQ_GETINCOUNT);
+ _EXPORT_INT(m, SNDCTL_SEQ_GETOUTCOUNT);
+#ifdef SNDCTL_SEQ_GETTIME
+ _EXPORT_INT(m, SNDCTL_SEQ_GETTIME);
+#endif
+ _EXPORT_INT(m, SNDCTL_SEQ_NRMIDIS);
+ _EXPORT_INT(m, SNDCTL_SEQ_NRSYNTHS);
+ _EXPORT_INT(m, SNDCTL_SEQ_OUTOFBAND);
+ _EXPORT_INT(m, SNDCTL_SEQ_PANIC);
+ _EXPORT_INT(m, SNDCTL_SEQ_PERCMODE);
+ _EXPORT_INT(m, SNDCTL_SEQ_RESET);
+ _EXPORT_INT(m, SNDCTL_SEQ_RESETSAMPLES);
+ _EXPORT_INT(m, SNDCTL_SEQ_SYNC);
+ _EXPORT_INT(m, SNDCTL_SEQ_TESTMIDI);
+ _EXPORT_INT(m, SNDCTL_SEQ_THRESHOLD);
+#ifdef SNDCTL_SYNTH_CONTROL
+ _EXPORT_INT(m, SNDCTL_SYNTH_CONTROL);
+#endif
+#ifdef SNDCTL_SYNTH_ID
+ _EXPORT_INT(m, SNDCTL_SYNTH_ID);
+#endif
+ _EXPORT_INT(m, SNDCTL_SYNTH_INFO);
+ _EXPORT_INT(m, SNDCTL_SYNTH_MEMAVL);
+#ifdef SNDCTL_SYNTH_REMOVESAMPLE
+ _EXPORT_INT(m, SNDCTL_SYNTH_REMOVESAMPLE);
+#endif
+ _EXPORT_INT(m, SNDCTL_TMR_CONTINUE);
+ _EXPORT_INT(m, SNDCTL_TMR_METRONOME);
+ _EXPORT_INT(m, SNDCTL_TMR_SELECT);
+ _EXPORT_INT(m, SNDCTL_TMR_SOURCE);
+ _EXPORT_INT(m, SNDCTL_TMR_START);
+ _EXPORT_INT(m, SNDCTL_TMR_STOP);
+ _EXPORT_INT(m, SNDCTL_TMR_TEMPO);
+ _EXPORT_INT(m, SNDCTL_TMR_TIMEBASE);
+}