[libsigrokdecode.git] / controller.c

/*
 * This file is part of the sigrok project.
 *
 * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
 * Copyright (C) 2011 Bert Vermeulen <bert@biot.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "config.h"
#include <sigrokdecode.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */
#include <glib.h>
#include <inttypes.h>

/* TODO: this should probably be in sigrokdecode.h */
/* Re-define some string functions for Python >= 3.0. */
#if PY_VERSION_HEX >= 0x03000000
#define PyString_AsString PyBytes_AsString
#define PyString_FromString PyBytes_FromString
#define PyString_Check PyBytes_Check
#endif


/* TODO
static GSList *pipelines = NULL;
*/

/* lives in decoder.c */
extern GSList *pd_list;
extern GSList *di_list;

struct srd_pipeline {
	int id;
	GSList *decoders;
};


static PyObject *Decoder_init(PyObject *self, PyObject *args)
{
	(void)self;
	(void)args;
//	printf("init object %x\n", self);

	Py_RETURN_NONE;
}

struct srd_decoder_instance *get_di_by_decobject(void *decobject);

static PyObject *Decoder_put(PyObject *self, PyObject *args)
{
	GSList *l;
	PyObject *data;
	struct srd_decoder_instance *di;
	struct srd_pd_output *pdo;
	uint64_t timeoffset, duration;
	int output_id;

	if (!(di = get_di_by_decobject(self)))
		return NULL;

	if (!PyArg_ParseTuple(args, "KKiO", &timeoffset, &duration, &output_id, &data))
		return NULL;

	printf("put: %s instance %p time %" PRIu64 " duration %" PRIu64 " ",
			di->decoder->name, di, timeoffset, duration);

	if (!(l = g_slist_nth(di->pd_output, output_id)))
		/* PD supplied invalid output id */
		/* TODO: better error message */
		return NULL;
	pdo = l->data;

	printf("stream %d: ", pdo->output_type);
	PyObject_Print(data, stdout, Py_PRINT_RAW);
	puts("");

	Py_RETURN_NONE;
}


static PyObject *Decoder_output_new(PyObject *self, PyObject *py_output_type)
{
	PyObject *ret;
	struct srd_decoder_instance *di;
	char *protocol_id, *description;
	int output_type, pdo_id;

	if (!(di = get_di_by_decobject(self)))
		return NULL;

	printf("output_new di %s\n", di->decoder->name);

//	if (!PyArg_ParseTuple(args, "i:output_type,s:protocol_id,s:description",
//			&output_type, &protocol_id, &description))
	if (!PyArg_ParseTuple(py_output_type, "i:output_type", &output_type))
		return NULL;

	protocol_id = "i2c";
	description = "blah";
	pdo_id = pd_output_new(di, output_type, protocol_id, description);
	if (pdo_id < 0)
		Py_RETURN_NONE;
	else
		ret = Py_BuildValue("i", pdo_id);

	return ret;
}

static PyMethodDef no_methods[] = { {NULL, NULL, 0, NULL} };
static PyMethodDef Decoder_methods[] = {
	{"__init__", Decoder_init, METH_VARARGS, ""},
	{"put", Decoder_put, METH_VARARGS,
	 "Accepts a dictionary with the following keys: time, duration, data"},
	{"output_new", Decoder_output_new, METH_VARARGS,
	 "Create a new output stream"},
	{NULL, NULL, 0, NULL}
};


typedef struct {
	PyObject_HEAD
} sigrok_Decoder_object;

static PyTypeObject sigrok_Decoder_type = {
	PyObject_HEAD_INIT(NULL)
	.tp_name = "sigrok.Decoder",
	.tp_basicsize = sizeof(sigrok_Decoder_object),
	.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
	.tp_doc = "Sigrok Decoder object",
	.tp_methods = Decoder_methods,
};

PyMODINIT_FUNC init_sigrok_Decoder(void)
{
	PyObject *mod;

	/* assign this here, for compiler portability */
	sigrok_Decoder_type.tp_new = PyType_GenericNew;
	if (PyType_Ready(&sigrok_Decoder_type) < 0)
		return;

	mod = Py_InitModule3("sigrok", no_methods, "sigrok base classes");
	Py_INCREF(&sigrok_Decoder_type);
	PyModule_AddObject(mod, "Decoder", (PyObject *)&sigrok_Decoder_type);

}


struct srd_decoder_instance *get_di_by_decobject(void *decobject)
{
	GSList *l;
	struct srd_decoder_instance *di;

	for (l = di_list; l; l = l->next) {
		di = l->data;
		if (decobject == di->py_instance)
			return di;
	}

	return NULL;
}

/**
 * Initialize libsigrokdecode.
 *
 * This initializes the Python interpreter, and creates and initializes
 * a "sigrok" Python module with a single put() method.
 *
 * Then, it searches for sigrok protocol decoder files (*.py) in the
 * "decoders" subdirectory of the the sigrok installation directory.
 * All decoders that are found are loaded into memory and added to an
 * internal list of decoders, which can be queried via srd_list_decoders().
 *
 * The caller is responsible for calling the clean-up function srd_exit(),
 * which will properly shut down libsigrokdecode and free its allocated memory.
 *
 * Multiple calls to srd_init(), without calling srd_exit() inbetween,
 * are not allowed.
 *
 * @return SRD_OK upon success, a (negative) error code otherwise.
 *         Upon Python errors, return SRD_ERR_PYTHON. If the sigrok decoders
 *         directory cannot be accessed, return SRD_ERR_DECODERS_DIR.
 *         If not enough memory could be allocated, return SRD_ERR_MALLOC.
 */
int srd_init(void)
{
	int ret;

	/* Py_Initialize() returns void and usually cannot fail. */
	Py_Initialize();

	init_sigrok_Decoder();

	PyRun_SimpleString("import sys;");
	if ((ret = set_modulepath()) != SRD_OK) {
		Py_Finalize();
		return ret;
	}

	if ((ret = srd_load_all_decoders()) != SRD_OK) {
		Py_Finalize();
		return ret;
	}

	return SRD_OK;
}


/**
 * Shutdown libsigrokdecode.
 *
 * This frees all the memory allocated for protocol decoders and shuts down
 * the Python interpreter.
 *
 * This function should only be called if there was a (successful!) invocation
 * of srd_init() before. Calling this function multiple times in a row, without
 * any successful srd_init() calls inbetween, is not allowed.
 *
 * @return SRD_OK upon success, a (negative) error code otherwise.
 */
int srd_exit(void)
{
	/* Unload/free all decoders, and then the list of decoders itself. */
	/* TODO: Error handling. */
	srd_unload_all_decoders();
	g_slist_free(pd_list);

	/* Py_Finalize() returns void, any finalization errors are ignored. */
	Py_Finalize();

	return SRD_OK;
}


/**
 * Add search directories for the protocol decoders.
 *
 * TODO: add path from env var SIGROKDECODE_PATH, config etc
 */
int set_modulepath(void)
{
	int ret;

	ret = PyRun_SimpleString("sys.path.append(r'" DECODERS_DIR "');");

	return ret;
}


struct srd_decoder_instance *srd_instance_new(const char *id)
{
	struct srd_decoder *dec;
	struct srd_decoder_instance *di;
	PyObject *py_args;

	fprintf(stdout, "%s: %s\n", __func__, id);

	if (!(dec = srd_get_decoder_by_id(id)))
		return NULL;

	/* TODO: Error handling. Use g_try_malloc(). */
	di = g_malloc(sizeof(*di));
	di->decoder = dec;
	di->pd_output = NULL;

	/* Create an empty Python tuple. */
	if (!(py_args = PyTuple_New(0))) { /* NEWREF */
		if (PyErr_Occurred())
			PyErr_Print(); /* Returns void. */

		return NULL; /* TODO: More specific error? */
	}

	/* Create an instance of the 'Decoder' class. */
	di->py_instance = PyObject_Call(dec->py_decobj, py_args, NULL);
	if (!di->py_instance) {
		if (PyErr_Occurred())
			PyErr_Print(); /* Returns void. */
		Py_XDECREF(py_args);
		return NULL; /* TODO: More specific error? */
	}
	di_list = g_slist_append(di_list, di);

	Py_XDECREF(py_args);

	return di;
}


int srd_instance_set_probe(struct srd_decoder_instance *di,
			   const char *probename, int num)
{
	PyObject *probedict, *probenum;

	probedict = PyObject_GetAttrString(di->py_instance, "probes"); /* NEWREF */
	if (!probedict) {
		if (PyErr_Occurred())
			PyErr_Print(); /* Returns void. */

		return SRD_ERR_PYTHON; /* TODO: More specific error? */
	}

	probenum = PyInt_FromLong(num);
	PyMapping_SetItemString(probedict, (char *)probename, probenum);

	Py_XDECREF(probenum);
	Py_XDECREF(probedict);

	return SRD_OK;
}


int srd_session_start(const char *driver, int unitsize, uint64_t starttime,
		uint64_t samplerate)
{
	PyObject *py_res;
	GSList *d;
	struct srd_decoder_instance *di;

	fprintf(stdout, "%s: %s\n", __func__, driver);

	for (d = di_list; d; d = d->next) {
		di = d->data;
		if (!(py_res = PyObject_CallMethod(di->py_instance, "start",
					"{s:s,s:l,s:l,s:l}",
					"driver", driver,
					"unitsize", (long)unitsize,
					"starttime", (long)starttime,
					"samplerate", (long)samplerate))) {
			if (PyErr_Occurred())
				PyErr_Print(); /* Returns void. */

			return SRD_ERR_PYTHON; /* TODO: More specific error? */
		}
		Py_XDECREF(py_res);
	}

	return SRD_OK;
}


/**
 * Run the specified decoder function.
 *
 * @param dec TODO
 * @param inbuf TODO
 * @param inbuflen TODO
 *
 * @return SRD_OK upon success, a (negative) error code otherwise.
 */
int srd_run_decoder(uint64_t timeoffset, uint64_t duration,
		struct srd_decoder_instance *dec, uint8_t *inbuf, uint64_t inbuflen)
{
	PyObject *py_instance, *py_res;

//	fprintf(stdout, "%s: %s\n", __func__, dec->decoder->name);
//	printf("to %u du %u len %d\n", timeoffset, duration, inbuflen);

	/* Return an error upon unusable input. */
	if (dec == NULL)
		return SRD_ERR_ARG; /* TODO: More specific error? */
	if (inbuf == NULL)
		return SRD_ERR_ARG; /* TODO: More specific error? */
	if (inbuflen == 0) /* No point in working on empty buffers. */
		return SRD_ERR_ARG; /* TODO: More specific error? */

	/* TODO: Error handling. */
	py_instance = dec->py_instance;
	Py_XINCREF(py_instance);

	if (!(py_res = PyObject_CallMethod(py_instance, "decode",
			"KKs#", timeoffset, duration, inbuf, inbuflen))) {
		if (PyErr_Occurred())
			PyErr_Print(); /* Returns void. */

		return SRD_ERR_PYTHON; /* TODO: More specific error? */
	}

	Py_XDECREF(py_res);
	return SRD_OK;
}


/* Feed logic samples to decoder session. */
int srd_session_feed(uint64_t timeoffset, uint64_t duration, uint8_t *inbuf,
		uint64_t inbuflen)
{
	GSList *d;
	int ret;

//	fprintf(stdout, "%s: %d bytes\n", __func__, inbuflen);

	for (d = di_list; d; d = d->next) {
		if ((ret = srd_run_decoder(timeoffset, duration, d->data, inbuf,
				inbuflen)) != SRD_OK)
			return ret;
	}

	return SRD_OK;
}


int pd_output_new(struct srd_decoder_instance *di, int output_type,
		char *protocol_id, char *description)
{
	GSList *l;
	struct srd_pd_output *pdo;
	int pdo_id;

	fprintf(stdout, "%s: output type %d, protocol_id %s, description %s\n",
			__func__, output_type, protocol_id, description);

	pdo_id = -1;
	for (l = di->pd_output; l; l = l->next) {
		pdo = l->data;
		if (pdo->pdo_id > pdo_id)
			pdo_id = pdo->pdo_id;
	}
	pdo_id++;

	if (!(pdo = g_try_malloc(sizeof(struct srd_pd_output))))
		return -1;

	pdo->pdo_id = pdo_id;
	pdo->output_type = output_type;
	pdo->protocol_id = g_strdup(protocol_id);
	pdo->description = g_strdup(description);
	di->pd_output = g_slist_append(di->pd_output, pdo);

	return pdo_id;
}


//int srd_pipeline_new(int plid)
//{
//
//
//}
Commit	Line	Data
b2c19614 BV	1	/*
	2	* This file is part of the sigrok project.
	3	*
	4	* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
	5	* Copyright (C) 2011 Bert Vermeulen <bert@biot.com>
	6	*
	7	* This program is free software: you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation, either version 3 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	19	*/
	20
	21	#include "config.h"
	22	#include <sigrokdecode.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */
	23	#include <glib.h>
1aef2f93	24	#include <inttypes.h>
b2c19614 BV	25
	26	/* TODO: this should probably be in sigrokdecode.h */
	27	/* Re-define some string functions for Python >= 3.0. */
	28	#if PY_VERSION_HEX >= 0x03000000
	29	#define PyString_AsString PyBytes_AsString
	30	#define PyString_FromString PyBytes_FromString
	31	#define PyString_Check PyBytes_Check
	32	#endif
	33
	34
e5080882	35	/* TODO
b2c19614	36	static GSList *pipelines = NULL;
e5080882	37	*/
b2c19614 BV	38
b2c19614 BV	39	/* lives in decoder.c */
e5080882 BV	40	extern GSList *pd_list;
e5080882 BV	41	extern GSList *di_list;
b2c19614 BV	42
	43	struct srd_pipeline {
	44	int id;
	45	GSList *decoders;
	46	};
	47
	48
	49
	50	static PyObject Decoder_init(PyObject self, PyObject *args)
	51	{
	52	(void)self;
	53	(void)args;
	54	// printf("init object %x\n", self);
	55
	56	Py_RETURN_NONE;
	57	}
	58
e5080882	59	struct srd_decoder_instance get_di_by_decobject(void decobject);
b2c19614 BV	60
	61	static PyObject Decoder_put(PyObject self, PyObject *args)
	62	{
e5080882 BV	63	GSList *l;
	64	PyObject *data;
	65	struct srd_decoder_instance *di;
	66	struct srd_pd_output *pdo;
1aef2f93	67	uint64_t timeoffset, duration;
e5080882 BV	68	int output_id;
	69
	70	if (!(di = get_di_by_decobject(self)))
	71	return NULL;
b2c19614	72
1aef2f93	73	if (!PyArg_ParseTuple(args, "KKiO", &timeoffset, &duration, &output_id, &data))
e5080882	74	return NULL;
b2c19614	75
1aef2f93 BV	76	printf("put: %s instance %p time %" PRIu64 " duration %" PRIu64 " ",
	77	di->decoder->name, di, timeoffset, duration);
	78
e5080882 BV	79	if (!(l = g_slist_nth(di->pd_output, output_id)))
	80	/* PD supplied invalid output id */
	81	/* TODO: better error message */
b2c19614	82	return NULL;
e5080882	83	pdo = l->data;
b2c19614	84
1aef2f93	85	printf("stream %d: ", pdo->output_type);
e5080882	86	PyObject_Print(data, stdout, Py_PRINT_RAW);
b2c19614 BV	87	puts("");
	88
	89	Py_RETURN_NONE;
	90	}
	91
e5080882 BV	92
	93	static PyObject Decoder_output_new(PyObject self, PyObject *py_output_type)
	94	{
	95	PyObject *ret;
	96	struct srd_decoder_instance *di;
	97	char protocol_id, description;
	98	int output_type, pdo_id;
	99
	100	if (!(di = get_di_by_decobject(self)))
	101	return NULL;
	102
	103	printf("output_new di %s\n", di->decoder->name);
	104
	105	// if (!PyArg_ParseTuple(args, "i:output_type,s:protocol_id,s:description",
	106	// &output_type, &protocol_id, &description))
	107	if (!PyArg_ParseTuple(py_output_type, "i:output_type", &output_type))
	108	return NULL;
	109
	110	protocol_id = "i2c";
	111	description = "blah";
	112	pdo_id = pd_output_new(di, output_type, protocol_id, description);
	113	if (pdo_id < 0)
	114	Py_RETURN_NONE;
	115	else
	116	ret = Py_BuildValue("i", pdo_id);
	117
	118	return ret;
	119	}
	120
b2c19614 BV	121	static PyMethodDef no_methods[] = { {NULL, NULL, 0, NULL} };
	122	static PyMethodDef Decoder_methods[] = {
	123	{"__init__", Decoder_init, METH_VARARGS, ""},
	124	{"put", Decoder_put, METH_VARARGS,
	125	"Accepts a dictionary with the following keys: time, duration, data"},
e5080882 BV	126	{"output_new", Decoder_output_new, METH_VARARGS,
e5080882 BV	127	"Create a new output stream"},
b2c19614 BV	128	{NULL, NULL, 0, NULL}
	129	};
	130
	131
b2c19614 BV	132	typedef struct {
	133	PyObject_HEAD
	134	} sigrok_Decoder_object;
	135
	136	static PyTypeObject sigrok_Decoder_type = {
	137	PyObject_HEAD_INIT(NULL)
6547acfd GM	138	.tp_name = "sigrok.Decoder",
	139	.tp_basicsize = sizeof(sigrok_Decoder_object),
	140	.tp_flags = Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_BASETYPE,
	141	.tp_doc = "Sigrok Decoder object",
	142	.tp_methods = Decoder_methods,
b2c19614 BV	143	};
	144
	145	PyMODINIT_FUNC init_sigrok_Decoder(void)
	146	{
	147	PyObject *mod;
	148
e5080882	149	/* assign this here, for compiler portability */
b2c19614 BV	150	sigrok_Decoder_type.tp_new = PyType_GenericNew;
	151	if (PyType_Ready(&sigrok_Decoder_type) < 0)
	152	return;
	153
	154	mod = Py_InitModule3("sigrok", no_methods, "sigrok base classes");
	155	Py_INCREF(&sigrok_Decoder_type);
	156	PyModule_AddObject(mod, "Decoder", (PyObject *)&sigrok_Decoder_type);
	157
	158	}
	159
	160
e5080882 BV	161	struct srd_decoder_instance get_di_by_decobject(void decobject)
	162	{
	163	GSList *l;
	164	struct srd_decoder_instance *di;
	165
	166	for (l = di_list; l; l = l->next) {
	167	di = l->data;
	168	if (decobject == di->py_instance)
	169	return di;
	170	}
	171
	172	return NULL;
	173	}
	174
b2c19614 BV	175	/**
	176	* Initialize libsigrokdecode.
	177	*
	178	* This initializes the Python interpreter, and creates and initializes
	179	* a "sigrok" Python module with a single put() method.
	180	*
	181	* Then, it searches for sigrok protocol decoder files (*.py) in the
	182	* "decoders" subdirectory of the the sigrok installation directory.
	183	* All decoders that are found are loaded into memory and added to an
	184	* internal list of decoders, which can be queried via srd_list_decoders().
	185	*
	186	* The caller is responsible for calling the clean-up function srd_exit(),
	187	* which will properly shut down libsigrokdecode and free its allocated memory.
	188	*
	189	* Multiple calls to srd_init(), without calling srd_exit() inbetween,
	190	* are not allowed.
	191	*
	192	* @return SRD_OK upon success, a (negative) error code otherwise.
	193	* Upon Python errors, return SRD_ERR_PYTHON. If the sigrok decoders
	194	* directory cannot be accessed, return SRD_ERR_DECODERS_DIR.
	195	* If not enough memory could be allocated, return SRD_ERR_MALLOC.
	196	*/
	197	int srd_init(void)
	198	{
	199	int ret;
	200
	201	/* Py_Initialize() returns void and usually cannot fail. */
	202	Py_Initialize();
	203
	204	init_sigrok_Decoder();
	205
	206	PyRun_SimpleString("import sys;");
	207	if ((ret = set_modulepath()) != SRD_OK) {
	208	Py_Finalize();
	209	return ret;
	210	}
	211
	212	if ((ret = srd_load_all_decoders()) != SRD_OK) {
	213	Py_Finalize();
	214	return ret;
	215	}
	216
	217	return SRD_OK;
	218	}
	219
	220
	221	/**
	222	* Shutdown libsigrokdecode.
	223	*
	224	* This frees all the memory allocated for protocol decoders and shuts down
	225	* the Python interpreter.
	226	*
	227	* This function should only be called if there was a (successful!) invocation
	228	* of srd_init() before. Calling this function multiple times in a row, without
	229	* any successful srd_init() calls inbetween, is not allowed.
	230	*
	231	* @return SRD_OK upon success, a (negative) error code otherwise.
	232	*/
	233	int srd_exit(void)
	234	{
	235	/* Unload/free all decoders, and then the list of decoders itself. */
	236	/* TODO: Error handling. */
	237	srd_unload_all_decoders();
e5080882	238	g_slist_free(pd_list);
b2c19614 BV	239
	240	/* Py_Finalize() returns void, any finalization errors are ignored. */
	241	Py_Finalize();
	242
	243	return SRD_OK;
	244	}
	245
	246
	247	/**
	248	* Add search directories for the protocol decoders.
	249	*
	250	* TODO: add path from env var SIGROKDECODE_PATH, config etc
	251	*/
	252	int set_modulepath(void)
	253	{
	254	int ret;
	255
	256	ret = PyRun_SimpleString("sys.path.append(r'" DECODERS_DIR "');");
	257
	258	return ret;
	259	}
	260
	261
	262	struct srd_decoder_instance srd_instance_new(const char id)
	263	{
	264	struct srd_decoder *dec;
	265	struct srd_decoder_instance *di;
	266	PyObject *py_args;
	267
	268	fprintf(stdout, "%s: %s\n", __func__, id);
	269
	270	if (!(dec = srd_get_decoder_by_id(id)))
	271	return NULL;
	272
	273	/* TODO: Error handling. Use g_try_malloc(). */
	274	di = g_malloc(sizeof(*di));
	275	di->decoder = dec;
	276	di->pd_output = NULL;
	277
	278	/* Create an empty Python tuple. */
	279	if (!(py_args = PyTuple_New(0))) { /* NEWREF */
	280	if (PyErr_Occurred())
	281	PyErr_Print(); /* Returns void. */
	282
	283	return NULL; /* TODO: More specific error? */
	284	}
	285
	286	/* Create an instance of the 'Decoder' class. */
	287	di->py_instance = PyObject_Call(dec->py_decobj, py_args, NULL);
	288	if (!di->py_instance) {
	289	if (PyErr_Occurred())
	290	PyErr_Print(); /* Returns void. */
	291	Py_XDECREF(py_args);
	292	return NULL; /* TODO: More specific error? */
	293	}
e5080882	294	di_list = g_slist_append(di_list, di);
b2c19614 BV	295
	296	Py_XDECREF(py_args);
	297
	298	return di;
	299	}
	300
	301
	302	int srd_instance_set_probe(struct srd_decoder_instance *di,
	303	const char *probename, int num)
	304	{
	305	PyObject probedict, probenum;
	306
	307	probedict = PyObject_GetAttrString(di->py_instance, "probes"); /* NEWREF */
	308	if (!probedict) {
	309	if (PyErr_Occurred())
	310	PyErr_Print(); /* Returns void. */
	311
	312	return SRD_ERR_PYTHON; /* TODO: More specific error? */
	313	}
	314
	315	probenum = PyInt_FromLong(num);
	316	PyMapping_SetItemString(probedict, (char *)probename, probenum);
	317
	318	Py_XDECREF(probenum);
	319	Py_XDECREF(probedict);
	320
	321	return SRD_OK;
	322	}
	323
	324
	325	int srd_session_start(const char *driver, int unitsize, uint64_t starttime,
	326	uint64_t samplerate)
	327	{
	328	PyObject *py_res;
	329	GSList *d;
	330	struct srd_decoder_instance *di;
	331
	332	fprintf(stdout, "%s: %s\n", __func__, driver);
	333
e5080882	334	for (d = di_list; d; d = d->next) {
b2c19614 BV	335	di = d->data;
b2c19614 BV	336	if (!(py_res = PyObject_CallMethod(di->py_instance, "start",
6547acfd GM	337	"{s:s,s:l,s:l,s:l}",
	338	"driver", driver,
	339	"unitsize", (long)unitsize,
	340	"starttime", (long)starttime,
	341	"samplerate", (long)samplerate))) {
b2c19614 BV	342	if (PyErr_Occurred())
	343	PyErr_Print(); /* Returns void. */
	344
	345	return SRD_ERR_PYTHON; /* TODO: More specific error? */
	346	}
	347	Py_XDECREF(py_res);
	348	}
	349
	350	return SRD_OK;
	351	}
	352
	353
	354	/**
	355	* Run the specified decoder function.
	356	*
	357	* @param dec TODO
	358	* @param inbuf TODO
	359	* @param inbuflen TODO
b2c19614 BV	360	*
	361	* @return SRD_OK upon success, a (negative) error code otherwise.
	362	*/
1aef2f93 BV	363	int srd_run_decoder(uint64_t timeoffset, uint64_t duration,
1aef2f93 BV	364	struct srd_decoder_instance dec, uint8_t inbuf, uint64_t inbuflen)
b2c19614 BV	365	{
b2c19614 BV	366	PyObject py_instance, py_res;
b2c19614 BV	367
b2c19614 BV	368	// fprintf(stdout, "%s: %s\n", __func__, dec->decoder->name);
1aef2f93	369	// printf("to %u du %u len %d\n", timeoffset, duration, inbuflen);
b2c19614 BV	370
	371	/* Return an error upon unusable input. */
	372	if (dec == NULL)
a62186e4	373	return SRD_ERR_ARG; /* TODO: More specific error? */
b2c19614	374	if (inbuf == NULL)
a62186e4	375	return SRD_ERR_ARG; /* TODO: More specific error? */
b2c19614	376	if (inbuflen == 0) /* No point in working on empty buffers. */
a62186e4	377	return SRD_ERR_ARG; /* TODO: More specific error? */
b2c19614 BV	378
	379	/* TODO: Error handling. */
	380	py_instance = dec->py_instance;
	381	Py_XINCREF(py_instance);
	382
	383	if (!(py_res = PyObject_CallMethod(py_instance, "decode",
1aef2f93	384	"KKs#", timeoffset, duration, inbuf, inbuflen))) {
b2c19614 BV	385	if (PyErr_Occurred())
	386	PyErr_Print(); /* Returns void. */
	387
	388	return SRD_ERR_PYTHON; /* TODO: More specific error? */
	389	}
	390
	391	Py_XDECREF(py_res);
	392	return SRD_OK;
	393	}
	394
	395
	396	/* Feed logic samples to decoder session. */
1aef2f93 BV	397	int srd_session_feed(uint64_t timeoffset, uint64_t duration, uint8_t *inbuf,
1aef2f93 BV	398	uint64_t inbuflen)
b2c19614 BV	399	{
	400	GSList *d;
	401	int ret;
	402
	403	// fprintf(stdout, "%s: %d bytes\n", __func__, inbuflen);
	404
e5080882	405	for (d = di_list; d; d = d->next) {
1aef2f93 BV	406	if ((ret = srd_run_decoder(timeoffset, duration, d->data, inbuf,
1aef2f93 BV	407	inbuflen)) != SRD_OK)
b2c19614 BV	408	return ret;
	409	}
	410
	411	return SRD_OK;
	412	}
	413
	414
e5080882 BV	415	int pd_output_new(struct srd_decoder_instance *di, int output_type,
	416	char protocol_id, char description)
	417	{
	418	GSList *l;
	419	struct srd_pd_output *pdo;
	420	int pdo_id;
	421
	422	fprintf(stdout, "%s: output type %d, protocol_id %s, description %s\n",
	423	__func__, output_type, protocol_id, description);
	424
	425	pdo_id = -1;
	426	for (l = di->pd_output; l; l = l->next) {
	427	pdo = l->data;
	428	if (pdo->pdo_id > pdo_id)
	429	pdo_id = pdo->pdo_id;
	430	}
	431	pdo_id++;
	432
	433	if (!(pdo = g_try_malloc(sizeof(struct srd_pd_output))))
	434	return -1;
	435
	436	pdo->pdo_id = pdo_id;
	437	pdo->output_type = output_type;
	438	pdo->protocol_id = g_strdup(protocol_id);
	439	pdo->description = g_strdup(description);
	440	di->pd_output = g_slist_append(di->pd_output, pdo);
	441
	442	return pdo_id;
	443	}
	444
	445
b2c19614 BV	446	//int srd_pipeline_new(int plid)
	447	//{
	448	//
	449	//
	450	//}
b2c19614 BV	451
	452
	453
	454