cdmodule.c

python s60 1.4.5版本的源代码

/* CD module -- interface to Mark Callow's and Roger Chickering's */
 /* CD Audio Library (CD). */

#include <sys/types.h>
#include <cdaudio.h>
#include "Python.h"

#define NCALLBACKS	8

typedef struct {
	PyObject_HEAD
	CDPLAYER *ob_cdplayer;
} cdplayerobject;

static PyObject *CdError;		/* exception cd.error */

static PyObject *
CD_allowremoval(cdplayerobject *self, PyObject *args)
{
	if (!PyArg_ParseTuple(args, ":allowremoval"))
		return NULL;

	CDallowremoval(self->ob_cdplayer);

	Py_INCREF(Py_None);
	return Py_None;
}

static PyObject *
CD_preventremoval(cdplayerobject *self, PyObject *args)
{
	if (!PyArg_ParseTuple(args, ":preventremoval"))
		return NULL;

	CDpreventremoval(self->ob_cdplayer);

	Py_INCREF(Py_None);
	return Py_None;
}

static PyObject *
CD_bestreadsize(cdplayerobject *self, PyObject *args)
{
	if (!PyArg_ParseTuple(args, ":bestreadsize"))
		return NULL;

	return PyInt_FromLong((long) CDbestreadsize(self->ob_cdplayer));
}

static PyObject *
CD_close(cdplayerobject *self, PyObject *args)
{
	if (!PyArg_ParseTuple(args, ":close"))
		return NULL;

	if (!CDclose(self->ob_cdplayer)) {
		PyErr_SetFromErrno(CdError); /* XXX - ??? */
		return NULL;
	}
	self->ob_cdplayer = NULL;

	Py_INCREF(Py_None);
	return Py_None;
}

static PyObject *
CD_eject(cdplayerobject *self, PyObject *args)
{
	CDSTATUS status;

	if (!PyArg_ParseTuple(args, ":eject"))
		return NULL;

	if (!CDeject(self->ob_cdplayer)) {
		if (CDgetstatus(self->ob_cdplayer, &status) &&
		    status.state == CD_NODISC)
			PyErr_SetString(CdError, "no disc in player");
		else
			PyErr_SetString(CdError, "eject failed");
		return NULL;
	}

	Py_INCREF(Py_None);
	return Py_None;
}
	
static PyObject *
CD_getstatus(cdplayerobject *self, PyObject *args)
{
	CDSTATUS status;

	if (!PyArg_ParseTuple(args, ":getstatus"))
		return NULL;

	if (!CDgetstatus(self->ob_cdplayer, &status)) {
		PyErr_SetFromErrno(CdError); /* XXX - ??? */
		return NULL;
	}

	return Py_BuildValue("(ii(iii)(iii)(iii)iiii)", status.state,
		       status.track, status.min, status.sec, status.frame,
		       status.abs_min, status.abs_sec, status.abs_frame,
		       status.total_min, status.total_sec, status.total_frame,
		       status.first, status.last, status.scsi_audio,
		       status.cur_block);
}
	
static PyObject *
CD_gettrackinfo(cdplayerobject *self, PyObject *args)
{
	int track;
	CDTRACKINFO info;
	CDSTATUS status;

	if (!PyArg_ParseTuple(args, "i:gettrackinfo", &track))
		return NULL;

	if (!CDgettrackinfo(self->ob_cdplayer, track, &info)) {
		if (CDgetstatus(self->ob_cdplayer, &status) &&
		    status.state == CD_NODISC)
			PyErr_SetString(CdError, "no disc in player");
		else
			PyErr_SetString(CdError, "gettrackinfo failed");
		return NULL;
	}

	return Py_BuildValue("((iii)(iii))",
		       info.start_min, info.start_sec, info.start_frame,
		       info.total_min, info.total_sec, info.total_frame);
}
	
static PyObject *
CD_msftoblock(cdplayerobject *self, PyObject *args)
{
	int min, sec, frame;

	if (!PyArg_ParseTuple(args, "iii:msftoblock", &min, &sec, &frame))
		return NULL;

	return PyInt_FromLong((long) CDmsftoblock(self->ob_cdplayer,
						min, sec, frame));
}
	
static PyObject *
CD_play(cdplayerobject *self, PyObject *args)
{
	int start, play;
	CDSTATUS status;

	if (!PyArg_ParseTuple(args, "ii:play", &start, &play))
		return NULL;

	if (!CDplay(self->ob_cdplayer, start, play)) {
		if (CDgetstatus(self->ob_cdplayer, &status) &&
		    status.state == CD_NODISC)
			PyErr_SetString(CdError, "no disc in player");
		else
			PyErr_SetString(CdError, "play failed");
		return NULL;
	}

	Py_INCREF(Py_None);
	return Py_None;
}
	
static PyObject *
CD_playabs(cdplayerobject *self, PyObject *args)
{
	int min, sec, frame, play;
	CDSTATUS status;

	if (!PyArg_ParseTuple(args, "iiii:playabs", &min, &sec, &frame, &play))
		return NULL;

	if (!CDplayabs(self->ob_cdplayer, min, sec, frame, play)) {
		if (CDgetstatus(self->ob_cdplayer, &status) &&
		    status.state == CD_NODISC)
			PyErr_SetString(CdError, "no disc in player");
		else
			PyErr_SetString(CdError, "playabs failed");
		return NULL;
	}

	Py_INCREF(Py_None);
	return Py_None;
}
	
static PyObject *
CD_playtrack(cdplayerobject *self, PyObject *args)
{
	int start, play;
	CDSTATUS status;

	if (!PyArg_ParseTuple(args, "ii:playtrack", &start, &play))
		return NULL;

	if (!CDplaytrack(self->ob_cdplayer, start, play)) {
		if (CDgetstatus(self->ob_cdplayer, &status) &&
		    status.state == CD_NODISC)
			PyErr_SetString(CdError, "no disc in player");
		else
			PyErr_SetString(CdError, "playtrack failed");
		return NULL;
	}

	Py_INCREF(Py_None);
	return Py_None;
}
	
static PyObject *
CD_playtrackabs(cdplayerobject *self, PyObject *args)
{
	int track, min, sec, frame, play;
	CDSTATUS status;

	if (!PyArg_ParseTuple(args, "iiiii:playtrackabs", &track, &min, &sec,
			      &frame, &play))
		return NULL;

	if (!CDplaytrackabs(self->ob_cdplayer, track, min, sec, frame, play)) {
		if (CDgetstatus(self->ob_cdplayer, &status) &&
		    status.state == CD_NODISC)
			PyErr_SetString(CdError, "no disc in player");
		else
			PyErr_SetString(CdError, "playtrackabs failed");
		return NULL;
	}

	Py_INCREF(Py_None);
	return Py_None;
}
	
static PyObject *
CD_readda(cdplayerobject *self, PyObject *args)
{
	int numframes, n;
	PyObject *result;

	if (!PyArg_ParseTuple(args, "i:readda", &numframes))
		return NULL;

	result = PyString_FromStringAndSize(NULL, numframes * sizeof(CDFRAME));
	if (result == NULL)
		return NULL;

	n = CDreadda(self->ob_cdplayer,
		       (CDFRAME *) PyString_AsString(result), numframes);
	if (n == -1) {
		Py_DECREF(result);
		PyErr_SetFromErrno(CdError);
		return NULL;
	}
	if (n < numframes)
		if (_PyString_Resize(&result, n * sizeof(CDFRAME)))
			return NULL;

	return result;
}

static PyObject *
CD_seek(cdplayerobject *self, PyObject *args)
{
	int min, sec, frame;
	long PyTryBlock;

	if (!PyArg_ParseTuple(args, "iii:seek", &min, &sec, &frame))
		return NULL;

	PyTryBlock = CDseek(self->ob_cdplayer, min, sec, frame);
	if (PyTryBlock == -1) {
		PyErr_SetFromErrno(CdError);
		return NULL;
	}

	return PyInt_FromLong(PyTryBlock);
}
	
static PyObject *
CD_seektrack(cdplayerobject *self, PyObject *args)
{
	int track;
	long PyTryBlock;

	if (!PyArg_ParseTuple(args, "i:seektrack", &track))
		return NULL;

	PyTryBlock = CDseektrack(self->ob_cdplayer, track);
	if (PyTryBlock == -1) {
		PyErr_SetFromErrno(CdError);
		return NULL;
	}

	return PyInt_FromLong(PyTryBlock);
}
	
static PyObject *
CD_seekblock(cdplayerobject *self, PyObject *args)
{
	unsigned long PyTryBlock;

	if (!PyArg_ParseTuple(args, "l:seekblock", &PyTryBlock))
		return NULL;

	PyTryBlock = CDseekblock(self->ob_cdplayer, PyTryBlock);
	if (PyTryBlock == (unsigned long) -1) {
		PyErr_SetFromErrno(CdError);
		return NULL;
	}

	return PyInt_FromLong(PyTryBlock);
}
	
static PyObject *
CD_stop(cdplayerobject *self, PyObject *args)
{
	CDSTATUS status;

	if (!PyArg_ParseTuple(args, ":stop"))
		return NULL;

	if (!CDstop(self->ob_cdplayer)) {
		if (CDgetstatus(self->ob_cdplayer, &status) &&
		    status.state == CD_NODISC)
			PyErr_SetString(CdError, "no disc in player");
		else
			PyErr_SetString(CdError, "stop failed");
		return NULL;
	}

	Py_INCREF(Py_None);
	return Py_None;
}
	
static PyObject *
CD_togglepause(cdplayerobject *self, PyObject *args)
{
	CDSTATUS status;

	if (!PyArg_ParseTuple(args, ":togglepause"))
		return NULL;

	if (!CDtogglepause(self->ob_cdplayer)) {
		if (CDgetstatus(self->ob_cdplayer, &status) &&
		    status.state == CD_NODISC)
			PyErr_SetString(CdError, "no disc in player");
		else
			PyErr_SetString(CdError, "togglepause failed");
		return NULL;
	}

	Py_INCREF(Py_None);
	return Py_None;
}
	
static PyMethodDef cdplayer_methods[] = {
	{"allowremoval",	(PyCFunction)CD_allowremoval,	1},
	{"bestreadsize",	(PyCFunction)CD_bestreadsize,	1},
	{"close",		(PyCFunction)CD_close,		1},
	{"eject",		(PyCFunction)CD_eject,		1},
	{"getstatus",		(PyCFunction)CD_getstatus,		1},
	{"gettrackinfo",	(PyCFunction)CD_gettrackinfo,	1},
	{"msftoblock",		(PyCFunction)CD_msftoblock,		1},
	{"play",		(PyCFunction)CD_play,		1},
	{"playabs",		(PyCFunction)CD_playabs,		1},
	{"playtrack",		(PyCFunction)CD_playtrack,		1},
	{"playtrackabs",	(PyCFunction)CD_playtrackabs,	1},
	{"preventremoval",	(PyCFunction)CD_preventremoval,	1},
	{"readda",		(PyCFunction)CD_readda,		1},
	{"seek",		(PyCFunction)CD_seek,		1},
	{"seekblock",		(PyCFunction)CD_seekblock,		1},
	{"seektrack",		(PyCFunction)CD_seektrack,		1},
	{"stop",		(PyCFunction)CD_stop,		1},
	{"togglepause",		(PyCFunction)CD_togglepause,   	1},
	{NULL,			NULL} 		/* sentinel */
};

static void
cdplayer_dealloc(cdplayerobject *self)
{
	if (self->ob_cdplayer != NULL)
		CDclose(self->ob_cdplayer);
	PyObject_Del(self);
}

static PyObject *
cdplayer_getattr(cdplayerobject *self, char *name)
{
	if (self->ob_cdplayer == NULL) {
		PyErr_SetString(PyExc_RuntimeError, "no player active");
		return NULL;
	}
	return Py_FindMethod(cdplayer_methods, (PyObject *)self, name);
}

PyTypeObject CdPlayertype = {
	PyObject_HEAD_INIT(&PyType_Type)
	0,			/*ob_size*/
	"cd.cdplayer",	/*tp_name*/