예제 #1
0
static PyObject *Decoder_add(PyObject *self, PyObject *args)
{
	PyObject *ret;
	struct srd_decoder_inst *di;
	char *proto_id;
	int output_type, pdo_id;

	if (!(di = srd_inst_find_by_obj(NULL, self))) {
		PyErr_SetString(PyExc_Exception, "decoder instance not found");
		return NULL;
	}

	if (!PyArg_ParseTuple(args, "is", &output_type, &proto_id)) {
		/* Let Python raise this exception. */
		return NULL;
	}

	pdo_id = srd_inst_pd_output_add(di, output_type, proto_id);
	if (pdo_id < 0)
		Py_RETURN_NONE;
	else
		ret = Py_BuildValue("i", pdo_id);

	return ret;
}
예제 #2
0
/**
 * Find a decoder instance by its Python object.
 *
 * I.e. find that instance's instantiation of the sigrokdecode.Decoder class.
 * This will recurse to find the instance anywhere in the stack tree.
 *
 * @param stack Pointer to a GSList of struct srd_decoder_inst, indicating the
 *              stack to search. To start searching at the bottom level of
 *              decoder instances, pass NULL.
 * @param obj The Python class instantiation.
 *
 * @return Pointer to struct srd_decoder_inst, or NULL if not found.
 */
SRD_PRIV struct srd_decoder_inst *srd_inst_find_by_obj(const GSList *stack,
						       const PyObject *obj)
{
// TODO?
	const GSList *l;
	struct srd_decoder_inst *tmp, *di;

	di = NULL;
	for (l = stack ? stack : di_list; di == NULL && l != NULL; l = l->next) {
		tmp = l->data;
		if (tmp->py_inst == obj)
			di = tmp;
		else if (tmp->next_di)
			di = srd_inst_find_by_obj(tmp->next_di, obj);
	}

	return di;
}
예제 #3
0
/**
 * Return whether the specified channel was supplied to the decoder.
 *
 * @param self TODO. Must not be NULL.
 * @param args TODO. Must not be NULL.
 *
 * @retval Py_True The channel has been supplied by the frontend.
 * @retval Py_False The channel has been supplied by the frontend.
 * @retval NULL An error occurred.
 */
static PyObject *Decoder_has_channel(PyObject *self, PyObject *args)
{
	int idx, max_idx;
	struct srd_decoder_inst *di;
	PyObject *py_channel;

	if (!self || !args)
		return NULL;

	if (!(di = srd_inst_find_by_obj(NULL, self))) {
		PyErr_SetString(PyExc_Exception, "decoder instance not found");
		return NULL;
	}

	/* Parse the argument of self.has_channel() into 'py_channel'. */
	if (!PyArg_ParseTuple(args, "O", &py_channel)) {
		/* Let Python raise this exception. */
		return NULL;
	}

	if (!PyLong_Check(py_channel)) {
		PyErr_SetString(PyExc_Exception, "channel index not a number");
		return NULL;
	}

	idx = PyLong_AsLong(py_channel);
	max_idx = g_slist_length(di->decoder->channels)
		+ g_slist_length(di->decoder->opt_channels) - 1;

	if (idx < 0 || idx > max_idx) {
		srd_err("Invalid channel index %d/%d.", idx, max_idx);
		PyErr_SetString(PyExc_Exception, "invalid channel");
		return NULL;
	}

	return (di->dec_channelmap[idx] == -1) ? Py_False : Py_True;
}
예제 #4
0
static PyObject *Decoder_register(PyObject *self, PyObject *args,
		PyObject *kwargs)
{
	struct srd_decoder_inst *di;
	struct srd_pd_output *pdo;
	PyObject *py_new_output_id;
	PyTypeObject *meta_type_py;
	const GVariantType *meta_type_gv;
	int output_type;
	char *proto_id, *meta_name, *meta_descr;
	char *keywords[] = {"output_type", "proto_id", "meta", NULL};

	meta_type_py = NULL;
	meta_type_gv = NULL;
	meta_name = meta_descr = NULL;

	if (!(di = srd_inst_find_by_obj(NULL, self))) {
		PyErr_SetString(PyExc_Exception, "decoder instance not found");
		return NULL;
	}

	/* Default to instance id, which defaults to class id. */
	proto_id = di->inst_id;
	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|s(Oss)", keywords,
			&output_type, &proto_id,
			&meta_type_py, &meta_name, &meta_descr)) {
		/* Let Python raise this exception. */
		return NULL;
	}

	/* Check if the meta value's type is supported. */
	if (output_type == SRD_OUTPUT_META) {
		if (meta_type_py == &PyLong_Type)
			meta_type_gv = G_VARIANT_TYPE_INT64;
		else if (meta_type_py == &PyFloat_Type)
			meta_type_gv = G_VARIANT_TYPE_DOUBLE;
		else {
			PyErr_Format(PyExc_TypeError, "Unsupported type '%s'.",
					meta_type_py->tp_name);
			return NULL;
		}
	}

	srd_dbg("Instance %s creating new output type %d for %s.",
		di->inst_id, output_type, proto_id);

	if (!(pdo = g_try_malloc(sizeof(struct srd_pd_output)))) {
		PyErr_SetString(PyExc_MemoryError, "struct srd_pd_output");
		return NULL;
	}

	/* pdo_id is just a simple index, nothing is deleted from this list anyway. */
	pdo->pdo_id = g_slist_length(di->pd_output);
	pdo->output_type = output_type;
	pdo->di = di;
	pdo->proto_id = g_strdup(proto_id);

	if (output_type == SRD_OUTPUT_META) {
		pdo->meta_type = meta_type_gv;
		pdo->meta_name = g_strdup(meta_name);
		pdo->meta_descr = g_strdup(meta_descr);
	}

	di->pd_output = g_slist_append(di->pd_output, pdo);
	py_new_output_id = Py_BuildValue("i", pdo->pdo_id);

	return py_new_output_id;
}
예제 #5
0
static PyObject *Decoder_put(PyObject *self, PyObject *args)
{
	GSList *l;
	PyObject *py_data, *py_res;
	struct srd_decoder_inst *di, *next_di;
	struct srd_pd_output *pdo;
	struct srd_proto_data *pdata;
	uint64_t start_sample, end_sample;
	int output_id;
	struct srd_pd_callback *cb;

	if (!(di = srd_inst_find_by_obj(NULL, self))) {
		/* Shouldn't happen. */
		srd_dbg("put(): self instance not found.");
		return NULL;
	}

	if (!PyArg_ParseTuple(args, "KKiO", &start_sample, &end_sample,
		&output_id, &py_data)) {
		/*
		 * This throws an exception, but by returning NULL here we let
		 * Python raise it. This results in a much better trace in
		 * controller.c on the decode() method call.
		 */
		return NULL;
	}

	if (!(l = g_slist_nth(di->pd_output, output_id))) {
		srd_err("Protocol decoder %s submitted invalid output ID %d.",
			di->decoder->name, output_id);
		return NULL;
	}
	pdo = l->data;

	srd_spew("Instance %s put %" PRIu64 "-%" PRIu64 " %s on oid %d.",
		 di->inst_id, start_sample, end_sample,
		 OUTPUT_TYPES[pdo->output_type], output_id);

	if (!(pdata = g_try_malloc0(sizeof(struct srd_proto_data)))) {
		srd_err("Failed to g_malloc() struct srd_proto_data.");
		return NULL;
	}
	pdata->start_sample = start_sample;
	pdata->end_sample = end_sample;
	pdata->pdo = pdo;

	switch (pdo->output_type) {
	case SRD_OUTPUT_ANN:
		/* Annotations are only fed to callbacks. */
		if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) {
			/* Convert from PyDict to srd_proto_data_annotation. */
			if (convert_annotation(di, py_data, pdata) != SRD_OK) {
				/* An error was already logged. */
				break;
			}
			cb->cb(pdata, cb->cb_data);
		}
		break;
	case SRD_OUTPUT_PYTHON:
		for (l = di->next_di; l; l = l->next) {
			next_di = l->data;
			srd_spew("Sending %d-%d to instance %s",
				 start_sample, end_sample, next_di->inst_id);
			if (!(py_res = PyObject_CallMethod(
				next_di->py_inst, "decode", "KKO", start_sample,
				end_sample, py_data))) {
				srd_exception_catch("Calling %s decode(): ",
							next_di->inst_id);
			}
			Py_XDECREF(py_res);
		}
		if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) {
			/* Frontends aren't really supposed to get Python
			 * callbacks, but it's useful for testing. */
			pdata->data = py_data;
			cb->cb(pdata, cb->cb_data);
		}
		break;
	case SRD_OUTPUT_BINARY:
		if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) {
			/* Convert from PyDict to srd_proto_data_binary. */
			if (convert_binary(di, py_data, pdata) != SRD_OK) {
				/* An error was already logged. */
				break;
			}
			cb->cb(pdata, cb->cb_data);
		}
		break;
	case SRD_OUTPUT_META:
		if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) {
			/* Annotations need converting from PyObject. */
			if (convert_meta(pdata, py_data) != SRD_OK) {
				/* An exception was already set up. */
				break;
			}
			cb->cb(pdata, cb->cb_data);
		}
		break;
	default:
		srd_err("Protocol decoder %s submitted invalid output type %d.",
			di->decoder->name, pdo->output_type);
		break;
	}

	g_free(pdata);

	Py_RETURN_NONE;
}
예제 #6
0
static PyObject *Decoder_put(PyObject *self, PyObject *args)
{
	GSList *l;
	PyObject *data, *py_res;
	struct srd_decoder_inst *di, *next_di;
	struct srd_pd_output *pdo;
	struct srd_proto_data *pdata;
	uint64_t start_sample, end_sample;
	int output_id;
	void (*cb)();

	if (!(di = srd_inst_find_by_obj(NULL, self))) {
		/* Shouldn't happen. */
		srd_dbg("put(): self instance not found.");
		return NULL;
	}

	if (!PyArg_ParseTuple(args, "KKiO", &start_sample, &end_sample,
	    &output_id, &data)) {
		/*
		 * This throws an exception, but by returning NULL here we let
		 * Python raise it. This results in a much better trace in
		 * controller.c on the decode() method call.
		 */
		return NULL;
	}

	if (!(l = g_slist_nth(di->pd_output, output_id))) {
		srd_err("Protocol decoder %s submitted invalid output ID %d.",
			di->decoder->name, output_id);
		return NULL;
	}
	pdo = l->data;

	srd_spew("Instance %s put %" PRIu64 "-%" PRIu64 " %s on oid %d.",
		 di->inst_id, start_sample, end_sample,
		 OUTPUT_TYPES[pdo->output_type], output_id);

	if (!(pdata = g_try_malloc0(sizeof(struct srd_proto_data)))) {
		srd_err("Failed to g_malloc() struct srd_proto_data.");
		return NULL;
	}
	pdata->start_sample = start_sample;
	pdata->end_sample = end_sample;
	pdata->pdo = pdo;

	switch (pdo->output_type) {
	case SRD_OUTPUT_ANN:
		/* Annotations are only fed to callbacks. */
		if ((cb = srd_pd_output_callback_find(pdo->output_type))) {
			/* Annotations need converting from PyObject. */
			if (convert_pyobj(di, data, &pdata->ann_format,
					  (char ***)&pdata->data) != SRD_OK) {
				/* An error was already logged. */
				break;
			}
			cb(pdata);
		}
		break;
	case SRD_OUTPUT_PROTO:
		for (l = di->next_di; l; l = l->next) {
			next_di = l->data;
			/* TODO: Is this needed? */
			Py_XINCREF(next_di->py_inst);
			srd_spew("Sending %d-%d to instance %s",
				 start_sample, end_sample,
				 next_di->inst_id);
			if (!(py_res = PyObject_CallMethod(
			    next_di->py_inst, "decode", "KKO", start_sample,
			    end_sample, data))) {
				srd_exception_catch("Calling %s decode(): ",
						    next_di->inst_id);
			}
			Py_XDECREF(py_res);
		}
		break;
	case SRD_OUTPUT_BINARY:
		srd_err("SRD_OUTPUT_BINARY not yet supported.");
		break;
	default:
		srd_err("Protocol decoder %s submitted invalid output type %d.",
			di->decoder->name, pdo->output_type);
		break;
	}

	g_free(pdata);

	Py_RETURN_NONE;
}
예제 #7
0
static PyObject *Decoder_wait(PyObject *self, PyObject *args)
{
	int ret;
	unsigned int i;
	gboolean found_match;
	struct srd_decoder_inst *di;
	PyObject *py_pinvalues, *py_matched;

	if (!self || !args)
		return NULL;

	if (!(di = srd_inst_find_by_obj(NULL, self))) {
		PyErr_SetString(PyExc_Exception, "decoder instance not found");
		Py_RETURN_NONE;
	}

	ret = set_new_condition_list(self, args);
	if (ret < 0) {
		srd_dbg("%s: %s: Aborting wait().", di->inst_id, __func__);
		return NULL;
	}
	if (ret == 9999) {
		/* Empty condition list, automatic match. */
		PyObject_SetAttrString(di->py_inst, "matched", Py_None);
		/* Leave self.samplenum unchanged (== di->abs_cur_samplenum). */
		return get_current_pinvalues(di);
	}

	while (1) {
		/* Wait for new samples to process, or termination request. */
		g_mutex_lock(&di->data_mutex);
		while (!di->got_new_samples && !di->want_wait_terminate)
			g_cond_wait(&di->got_new_samples_cond, &di->data_mutex);

		/*
		 * Check whether any of the current condition(s) match.
		 * Arrange for termination requests to take a code path which
		 * won't find new samples to process, pretends to have processed
		 * previously stored samples, and returns to the main thread,
		 * while the termination request still gets signalled.
		 */
		found_match = FALSE;
		ret = process_samples_until_condition_match(di, &found_match);

		/* If there's a match, set self.samplenum etc. and return. */
		if (found_match) {
			/* Set self.samplenum to the (absolute) sample number that matched. */
			PyObject_SetAttrString(di->py_inst, "samplenum",
				PyLong_FromLong(di->abs_cur_samplenum));

			if (di->match_array && di->match_array->len > 0) {
				py_matched = PyTuple_New(di->match_array->len);
				for (i = 0; i < di->match_array->len; i++)
					PyTuple_SetItem(py_matched, i, PyBool_FromLong(di->match_array->data[i]));
				PyObject_SetAttrString(di->py_inst, "matched", py_matched);
				match_array_free(di);
			} else {
				PyObject_SetAttrString(di->py_inst, "matched", Py_None);
			}
	
			py_pinvalues = get_current_pinvalues(di);

			g_mutex_unlock(&di->data_mutex);

			return py_pinvalues;
		}

		/* No match, reset state for the next chunk. */
		di->got_new_samples = FALSE;
		di->handled_all_samples = TRUE;
		di->abs_start_samplenum = 0;
		di->abs_end_samplenum = 0;
		di->inbuf = NULL;
		di->inbuflen = 0;

		/* Signal the main thread that we handled all samples. */
		g_cond_signal(&di->handled_all_samples_cond);

		/*
		 * When termination of wait() and decode() was requested,
		 * then exit the loop after releasing the mutex.
		 */
		if (di->want_wait_terminate) {
			srd_dbg("%s: %s: Will return from wait().",
				di->inst_id, __func__);
			g_mutex_unlock(&di->data_mutex);
			return NULL;
		}

		g_mutex_unlock(&di->data_mutex);
	}

	Py_RETURN_NONE;
}
예제 #8
0
/**
 * Replace the current condition list with the new one.
 *
 * @param self TODO. Must not be NULL.
 * @param args TODO. Must not be NULL.
 *
 * @retval SRD_OK The new condition list was set successfully.
 * @retval SRD_ERR There was an error setting the new condition list.
 *                 The contents of di->condition_list are undefined.
 * @retval 9999 TODO.
 */
static int set_new_condition_list(PyObject *self, PyObject *args)
{
	struct srd_decoder_inst *di;
	GSList *term_list;
	PyObject *py_conditionlist, *py_conds, *py_dict;
	int i, num_conditions, ret;

	if (!self || !args)
		return SRD_ERR_ARG;

	/* Get the decoder instance. */
	if (!(di = srd_inst_find_by_obj(NULL, self))) {
		PyErr_SetString(PyExc_Exception, "decoder instance not found");
		return SRD_ERR;
	}

	/*
	 * Return an error condition from .wait() when termination is
	 * requested, such that decode() will terminate.
	 */
	if (di->want_wait_terminate) {
		srd_dbg("%s: %s: Skip (want_term).", di->inst_id, __func__);
		return SRD_ERR;
	}

	/* Parse the argument of self.wait() into 'py_conds'. */
	if (!PyArg_ParseTuple(args, "O", &py_conds)) {
		/* Let Python raise this exception. */
		return SRD_ERR;
	}

	/* Check whether 'py_conds' is a dict or a list. */
	if (PyList_Check(py_conds)) {
		/* 'py_conds' is a list. */
		py_conditionlist = py_conds;
		num_conditions = PyList_Size(py_conditionlist);
		if (num_conditions == 0)
			return 9999; /* The PD invoked self.wait([]). */
		Py_IncRef(py_conditionlist);
	} else if (PyDict_Check(py_conds)) {
		/* 'py_conds' is a dict. */
		if (PyDict_Size(py_conds) == 0)
			return 9999; /* The PD invoked self.wait({}). */
		/* Make a list and put the dict in there for convenience. */
		py_conditionlist = PyList_New(1);
		Py_IncRef(py_conds);
		PyList_SetItem(py_conditionlist, 0, py_conds);
		num_conditions = 1;
	} else {
		srd_err("Condition list is neither a list nor a dict.");
		return SRD_ERR;
	}

	/* Free the old condition list. */
	condition_list_free(di);

	ret = SRD_OK;

	/* Iterate over the conditions, set di->condition_list accordingly. */
	for (i = 0; i < num_conditions; i++) {
		/* Get a condition (dict) from the condition list. */
		py_dict = PyList_GetItem(py_conditionlist, i);
		if (!PyDict_Check(py_dict)) {
			srd_err("Condition is not a dict.");
			ret = SRD_ERR;
			break;
		}

		/* Create the list of terms in this condition. */
		if ((ret = create_term_list(py_dict, &term_list)) < 0)
			break;

		/* Add the new condition to the PD instance's condition list. */
		di->condition_list = g_slist_append(di->condition_list, term_list);
	}

	Py_DecRef(py_conditionlist);

	return ret;
}