sigrokdecode module's types

output types: 
	1.OUTPUT_ANN
	2.OUTPUT_PYTHON
	3.OUTPUT_BINARY
	4.OUTPUT_META
	
default sample rate name: SRD_CONF_SAMPLERATE,value is 10000

sigrokdecode.Decoder methods:

class Decoder{
	PyObject* put(PyObject *self, PyObject *args);
	PyObject* register(PyObject *self, PyObject *args,PyObject *kwargs);
	PyObject* wait(PyObject *self, PyObject *args);
	PyObject* has_channel(PyObject *self, PyObject *args);
}


c can call's method of python:
	1.reset
	2.start
	3.decode
	4.metadata
	5.printlog //print log to console, param type is string

	
decode函数返回任意值，则表示解析任务终止