From: Kristoffer Sjöberg Date: Sat, 12 Nov 2011 22:42:52 +0000 (+0100) Subject: Partial implementation of the streaming PD API. X-Git-Tag: libsigrokdecode-0.1.0~279 X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=922763abc279fc5d4e0ed93ed6c6bebbf68d7baf;p=libsigrokdecode.git Partial implementation of the streaming PD API. --- diff --git a/decode.c b/decode.c index fe89eb0..5ff6415 100644 --- a/decode.c +++ b/decode.c @@ -49,6 +49,65 @@ static GSList *list_pds = NULL; static int srd_load_decoder(const char *name, struct srd_decoder **dec); +static int _unitsize = 1; + +static PyObject* +emb_getmeta(PyObject *self, PyObject *args) +{ + if (!PyArg_ParseTuple(args, ":get")) + return NULL; + + return Py_BuildValue("{sssisd}", + "driver", "demo", + "unitsize", _unitsize, + "starttime", 129318231823.0 //TODO: Fill with something reasonable. + ); +} + +#if 0 +static PyObject* +emb_get(PyObject *self, PyObject *args) +{ + PyObject *r; + if (!PyArg_ParseTuple(args, ":get")) + return NULL; + + fprintf(stderr, "get called, returns %d\n", _bufoffset); + if ((_bufoffset + _unitsize) <= _buflen) { + r = Py_BuildValue("{sisiss#}", + "time", _bufoffset / _unitsize, + "duration", 10, + "data", &_buf[_bufoffset], _unitsize + ); + _bufoffset += _unitsize; + return r; + } + Py_RETURN_NONE; +} +#endif + +static PyObject* +emb_put(PyObject *self, PyObject *args) +{ + PyObject *arg; + + if (!PyArg_ParseTuple(args, "O:put", &arg)) + return NULL; + + fprintf(stderr, "put called, got passed %d\n", arg); + Py_RETURN_NONE; +} + +static PyMethodDef EmbMethods[] = { + {"get_meta", emb_getmeta, METH_VARARGS, + "Returns information about the stream."}, + /*{"get", emb_get, METH_VARARGS, + "Returns a dictionary with the following keys: time, duration, data"},*/ + {"put", emb_put, METH_VARARGS, + "Accepts a dictionary with the following keys: time, duration, data"}, + {NULL, NULL, 0, NULL} +}; + /** * Initialize libsigrokdecode. * @@ -65,6 +124,8 @@ int srd_init(void) /* Py_Initialize() returns void and usually cannot fail. */ Py_Initialize(); + Py_InitModule("sigrok", EmbMethods); + /* Add search directory for the protocol decoders. */ /* FIXME: Check error code. */ /* FIXME: What happens if this function is called multiple times? */ @@ -135,7 +196,7 @@ struct srd_decoder *srd_get_decoder_by_id(const char *id) * @return SRD_OK upon success, a (negative) error code otherwise. * The 'outstr' argument points to a malloc()ed string upon success. */ -static int h_str(PyObject *py_res, PyObject *py_func, PyObject *py_mod, +static int h_str(PyObject *py_res, PyObject *py_mod, const char *key, char **outstr) { PyObject *py_str; @@ -145,7 +206,7 @@ static int h_str(PyObject *py_res, PyObject *py_func, PyObject *py_mod, py_str = PyMapping_GetItemString(py_res, (char *)key); if (!py_str || !PyString_Check(py_str)) { ret = SRD_ERR_PYTHON; /* TODO: More specific error? */ - goto err_h_decref_func; + goto err_h_decref_mod; } /* @@ -169,8 +230,7 @@ static int h_str(PyObject *py_res, PyObject *py_func, PyObject *py_mod, err_h_decref_str: Py_XDECREF(py_str); -err_h_decref_func: - Py_XDECREF(py_func); +err_h_decref_mod: Py_XDECREF(py_mod); if (PyErr_Occurred()) @@ -199,56 +259,50 @@ static int srd_load_decoder(const char *name, return SRD_ERR_PYTHON; /* TODO: More specific error? */ } - /* Get the 'register' function name as Python callable object. */ - py_func = PyObject_GetAttrString(py_mod, "register"); /* NEWREF */ - if (!py_func || !PyCallable_Check(py_func)) { + /* Get the 'register' dictionary as Python object. */ + py_res = PyObject_GetAttrString(py_mod, "register"); /* NEWREF */ + if (!py_res || PyCallable_Check(py_res)) { if (PyErr_Occurred()) PyErr_Print(); /* Returns void. */ Py_XDECREF(py_mod); + fprintf(stderr, "register dictionary was not found or is declared a function.\n"); return SRD_ERR_PYTHON; /* TODO: More specific error? */ } - /* Call the 'register' function without arguments, get the result. */ - if (!(py_res = PyObject_CallFunction(py_func, NULL))) { /* NEWREF */ - PyErr_Print(); /* Returns void. */ - Py_XDECREF(py_func); - Py_XDECREF(py_mod); - return SRD_ERR_PYTHON; /* TODO: More specific error? */ - } if (!(d = malloc(sizeof(struct srd_decoder)))) return SRD_ERR_MALLOC; - if ((r = h_str(py_res, py_func, py_mod, "id", &(d->id))) < 0) + if ((r = h_str(py_res, py_mod, "id", &(d->id))) < 0) return r; - if ((r = h_str(py_res, py_func, py_mod, "name", &(d->name))) < 0) + if ((r = h_str(py_res, py_mod, "name", &(d->name))) < 0) return r; - if ((r = h_str(py_res, py_func, py_mod, "longname", + if ((r = h_str(py_res, py_mod, "longname", &(d->longname))) < 0) return r; - if ((r = h_str(py_res, py_func, py_mod, "desc", &(d->desc))) < 0) + if ((r = h_str(py_res, py_mod, "desc", &(d->desc))) < 0) return r; - if ((r = h_str(py_res, py_func, py_mod, "longdesc", + if ((r = h_str(py_res, py_mod, "longdesc", &(d->longdesc))) < 0) return r; - if ((r = h_str(py_res, py_func, py_mod, "author", &(d->author))) < 0) + if ((r = h_str(py_res, py_mod, "author", &(d->author))) < 0) return r; - if ((r = h_str(py_res, py_func, py_mod, "email", &(d->email))) < 0) + if ((r = h_str(py_res, py_mod, "email", &(d->email))) < 0) return r; - if ((r = h_str(py_res, py_func, py_mod, "license", &(d->license))) < 0) + if ((r = h_str(py_res, py_mod, "license", &(d->license))) < 0) return r; d->py_mod = py_mod; Py_XDECREF(py_res); - Py_XDECREF(py_func); + /* Get the 'decode' function name as Python callable object. */ py_func = PyObject_GetAttrString(py_mod, "decode"); /* NEWREF */ @@ -259,7 +313,7 @@ static int srd_load_decoder(const char *name, return SRD_ERR_PYTHON; /* TODO: More specific error? */ } - d->py_func = py_func; + d->py_decodefunc = py_func; /* TODO: Handle func, inputformats, outputformats. */ /* Note: They must at least be set to NULL, will segfault otherwise. */ @@ -288,6 +342,7 @@ int srd_run_decoder(struct srd_decoder *dec, uint8_t **outbuf, uint64_t *outbuflen) { PyObject *py_mod, *py_func, *py_args, *py_value, *py_res; + uint64_t inbuf_pos = 0; int r, ret; /* TODO: Use #defines for the return codes. */ @@ -303,11 +358,11 @@ int srd_run_decoder(struct srd_decoder *dec, return SRD_ERR_ARGS; /* TODO: More specific error? */ if (outbuflen == NULL) return SRD_ERR_ARGS; /* TODO: More specific error? */ - + /* TODO: Error handling. */ py_mod = dec->py_mod; Py_XINCREF(py_mod); - py_func = dec->py_func; + py_func = dec->py_decodefunc; Py_XINCREF(py_func); /* Create a Python tuple of size 1. */ @@ -316,34 +371,32 @@ int srd_run_decoder(struct srd_decoder *dec, goto err_run_decref_func; } - /* Get the input buffer as Python "string" (byte array). */ - /* TODO: int vs. uint64_t for 'inbuflen'? */ - if (!(py_value = Py_BuildValue("s#", inbuf, inbuflen))) { /* NEWREF */ - ret = SRD_ERR_PYTHON; /* TODO: More specific error? */ - goto err_run_decref_args; - } - - /* - * IMPORTANT: PyTuple_SetItem() "steals" a reference to py_value! - * That means we are no longer responsible for Py_XDECREF()'ing it. - * It will automatically be free'd when the 'py_args' tuple is free'd. - */ - if (PyTuple_SetItem(py_args, 0, py_value) != 0) { /* STEAL */ - ret = SRD_ERR_PYTHON; /* TODO: More specific error? */ - Py_XDECREF(py_value); /* TODO: Ref. stolen upon error? */ - goto err_run_decref_args; - } - - if (!(py_res = PyObject_CallObject(py_func, py_args))) { /* NEWREF */ - ret = SRD_ERR_PYTHON; /* TODO: More specific error? */ - goto err_run_decref_args; - } - - if ((r = PyObject_AsCharBuffer(py_res, (const char **)outbuf, - (Py_ssize_t *)outbuflen))) { - ret = SRD_ERR_PYTHON; /* TODO: More specific error? */ - Py_XDECREF(py_res); - goto err_run_decref_args; + while (inbuf_pos < inbuflen) { + /* Get the input buffer as Python "string" (byte array). */ + /* TODO: int vs. uint64_t for 'inbuflen'? */ + + py_value = Py_BuildValue("{sisiss#}", + "time", inbuf_pos / _unitsize, + "duration", 10, + "data", &inbuf[inbuf_pos], _unitsize + ); + + /* + * IMPORTANT: PyTuple_SetItem() "steals" a reference to py_value! + * That means we are no longer responsible for Py_XDECREF()'ing it. + * It will automatically be free'd when the 'py_args' tuple is free'd. + */ + if (PyTuple_SetItem(py_args, 0, py_value) != 0) { /* STEAL */ + ret = SRD_ERR_PYTHON; /* TODO: More specific error? */ + Py_XDECREF(py_value); /* TODO: Ref. stolen upon error? */ + goto err_run_decref_args; + } + + if (!(py_res = PyObject_CallObject(py_func, py_args))) { /* NEWREF */ + ret = SRD_ERR_PYTHON; /* TODO: More specific error? */ + goto err_run_decref_args; + } + inbuf_pos++; } ret = SRD_OK; @@ -379,7 +432,7 @@ static int srd_unload_decoder(struct srd_decoder *dec) if (dec->outputformats != NULL) g_slist_free(dec->outputformats); - Py_XDECREF(dec->py_func); + Py_XDECREF(dec->py_decodefunc); Py_XDECREF(dec->py_mod); return SRD_OK; diff --git a/decoders/i2c.py b/decoders/i2c.py index 4e11921..f2b0c2d 100644 --- a/decoders/i2c.py +++ b/decoders/i2c.py @@ -125,7 +125,13 @@ # 'signals': [{'SCL': }]} # -def decode(inbuf): +def decode(l): + print(l) + sigrok.put(l) + + + +def decode2(inbuf): """I2C protocol decoder""" # FIXME: Get the data in the correct format in the first place. @@ -233,28 +239,27 @@ def decode(inbuf): # FIXME: Just for testing... return str(out) -def register(): - return { - 'id': 'i2c', - 'name': 'I2C', - 'longname': 'Inter-Integrated Circuit (I2C) bus', - 'desc': 'I2C is a two-wire, multi-master, serial bus.', - 'longdesc': '...', - 'author': 'Uwe Hermann', - 'email': 'uwe@hermann-uwe.de', - 'license': 'gplv2+', - 'in': ['logic'], - 'out': ['i2c'], - 'probes': [ - ['scl', 'Serial clock line'], - ['sda', 'Serial data line'], - ], - 'options': { - 'address-space': ['Address space (in bits)', 7], - }, - # 'start': start, - # 'report': report, - } +register = { + 'id': 'i2c', + 'name': 'I2C', + 'longname': 'Inter-Integrated Circuit (I2C) bus', + 'desc': 'I2C is a two-wire, multi-master, serial bus.', + 'longdesc': '...', + 'author': 'Uwe Hermann', + 'email': 'uwe@hermann-uwe.de', + 'license': 'gplv2+', + 'in': ['logic'], + 'out': ['i2c'], + 'probes': [ + ['scl', 'Serial clock line'], + ['sda', 'Serial data line'], + ], + 'options': { + 'address-space': ['Address space (in bits)', 7], + }, + # 'start': start, + # 'report': report, +} # Use psyco (if available) as it results in huge performance improvements. try: diff --git a/decoders/nunchuk.py b/decoders/nunchuk.py index 77b154e..57be1d7 100644 --- a/decoders/nunchuk.py +++ b/decoders/nunchuk.py @@ -47,7 +47,12 @@ example_packets = [ {'type': 'P', 'range': (32, 33), 'data': None, 'ann': ''}, ] -def decode(inbuf): +def decode(l): + print(l) + sigrok.put(l) + + +def decode2(inbuf): """Nintendo Wii Nunchuk decoder""" # FIXME: Get the data in the correct format in the first place. @@ -139,27 +144,26 @@ def decode(inbuf): # FIXME return '' -def register(): - return { - 'id': 'nunchuk', - 'name': 'Nunchuk', - 'longname': 'Nintendo Wii Nunchuk decoder', - 'desc': 'Decodes the Nintendo Wii Nunchuk I2C-based protocol.', - 'longdesc': '...', - 'author': 'Uwe Hermann', - 'email': 'uwe@hermann-uwe.de', - 'license': 'gplv2+', - 'in': ['i2c'], - 'out': ['nunchuck'], - 'probes': [ - # TODO - ], - 'options': { - # TODO - }, - # 'start': start, - # 'report': report, - } +register = { + 'id': 'nunchuk', + 'name': 'Nunchuk', + 'longname': 'Nintendo Wii Nunchuk decoder', + 'desc': 'Decodes the Nintendo Wii Nunchuk I2C-based protocol.', + 'longdesc': '...', + 'author': 'Uwe Hermann', + 'email': 'uwe@hermann-uwe.de', + 'license': 'gplv2+', + 'in': ['i2c'], + 'out': ['nunchuck'], + 'probes': [ + # TODO + ], + 'options': { + # TODO + }, + # 'start': start, + # 'report': report, +} # Use psyco (if available) as it results in huge performance improvements. try: diff --git a/decoders/transitioncounter.py b/decoders/transitioncounter.py index 6bd97c2..4cd1670 100644 --- a/decoders/transitioncounter.py +++ b/decoders/transitioncounter.py @@ -17,8 +17,16 @@ ## along with this program; if not, write to the Free Software ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA ## +import sigrok -def decode(inbuf): +def decode(l): + """Counts the low->high and high->low transitions in the specified + channel(s) of the signal.""" + + print(l) + sigrok.put(l) + +def decode2(inbuf): """Counts the low->high and high->low transitions in the specified channel(s) of the signal.""" @@ -75,27 +83,26 @@ def decode(inbuf): return outbuf -def register(): - return { - 'id': 'transitioncounter', - 'name': 'Transition counter', - 'longname': '...', - 'desc': 'Counts rising/falling edges in the signal.', - 'longdesc': '...', - 'author': 'Uwe Hermann', - 'email': 'uwe@hermann-uwe.de', - 'license': 'gplv2+', - 'in': ['logic'], - 'out': ['transitioncounts'], - 'probes': [ - # All probes. - ], - 'options': { - # No options so far. - }, - # 'start': start, - # 'report': report, - } +register = { + 'id': 'transitioncounter', + 'name': 'Transition counter', + 'longname': '...', + 'desc': 'Counts rising/falling edges in the signal.', + 'longdesc': '...', + 'author': 'Uwe Hermann', + 'email': 'uwe@hermann-uwe.de', + 'license': 'gplv2+', + 'in': ['logic'], + 'out': ['transitioncounts'], + 'probes': [ + # All probes. + ], + 'options': { + # No options so far. + }, + # 'start': start, + # 'report': report, +} # Use psyco (if available) as it results in huge performance improvements. try: diff --git a/sigrokdecode.h b/sigrokdecode.h index b941c9f..c455acf 100644 --- a/sigrokdecode.h +++ b/sigrokdecode.h @@ -91,8 +91,8 @@ struct srd_decoder { /** TODO */ PyObject *py_mod; - /** TODO */ - PyObject *py_func; + /** Python function that performs the decoding */ + PyObject *py_decodefunc; }; int srd_init(void);