gr::blocks::copy_impl Class Reference
#include <copy_impl.h>
Public Member Functions | |
| copy_impl (size_t itemsize) | |
| ~copy_impl () | |
| void | forecast (int noutput_items, gr_vector_int &ninput_items_required) |
| Estimate input requirements given output request. | |
| bool | check_topology (int ninputs, int noutputs) |
| Confirm that ninputs and noutputs is an acceptable combination. | |
| void | set_enabled (bool enable) |
| bool | enabled () const |
| int | general_work (int noutput_items, gr_vector_int &ninput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items) |
| compute output items from input items | |
Constructor & Destructor Documentation
| gr::blocks::copy_impl::copy_impl | ( | size_t | itemsize | ) |
| gr::blocks::copy_impl::~copy_impl | ( | ) |
Member Function Documentation
| bool gr::blocks::copy_impl::check_topology | ( | int | ninputs, |
| int | noutputs | ||
| ) | [virtual] |
Confirm that ninputs and noutputs is an acceptable combination.
- Parameters:
-
ninputs number of input streams connected noutputs number of output streams connected
- Returns:
- true if this is a valid configuration for this block.
This function is called by the runtime system whenever the topology changes. Most classes do not need to override this. This check is in addition to the constraints specified by the input and output gr_io_signatures.
Reimplemented from gr_basic_block.
| bool gr::blocks::copy_impl::enabled | ( | ) | const [inline, virtual] |
Implements gr::blocks::copy.
| void gr::blocks::copy_impl::forecast | ( | int | noutput_items, |
| gr_vector_int & | ninput_items_required | ||
| ) | [virtual] |
Estimate input requirements given output request.
- Parameters:
-
noutput_items number of output items to produce ninput_items_required number of input items required on each input stream
Given a request to product noutput_items, estimate the number of data items required on each input stream. The estimate doesn't have to be exact, but should be close.
Reimplemented from gr_block.
| int gr::blocks::copy_impl::general_work | ( | int | noutput_items, |
| gr_vector_int & | ninput_items, | ||
| gr_vector_const_void_star & | input_items, | ||
| gr_vector_void_star & | output_items | ||
| ) | [virtual] |
compute output items from input items
- Parameters:
-
noutput_items number of output items to write on each output stream ninput_items number of input items available on each input stream input_items vector of pointers to the input items, one entry per input stream output_items vector of pointers to the output items, one entry per output stream
- Returns:
- number of items actually written to each output stream, or -1 on EOF. It is OK to return a value less than noutput_items. -1 <= return value <= noutput_items
general_work must call consume or consume_each to indicate how many items were consumed on each input stream.
Reimplemented from gr_block.
| void gr::blocks::copy_impl::set_enabled | ( | bool | enable | ) | [inline, virtual] |
Implements gr::blocks::copy.
The documentation for this class was generated from the following file:
