diff options
Diffstat (limited to 'gr-digital/lib/digital_ofdm_insert_preamble.cc')
| -rw-r--r-- | gr-digital/lib/digital_ofdm_insert_preamble.cc | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/gr-digital/lib/digital_ofdm_insert_preamble.cc b/gr-digital/lib/digital_ofdm_insert_preamble.cc index a46133643..e0449b50b 100644 --- a/gr-digital/lib/digital_ofdm_insert_preamble.cc +++ b/gr-digital/lib/digital_ofdm_insert_preamble.cc @@ -41,7 +41,7 @@ digital_ofdm_insert_preamble::digital_ofdm_insert_preamble (int fft_length, const std::vector<std::vector<gr_complex> > &preamble) : gr_block("ofdm_insert_preamble", - gr_make_io_signature2(2, 2, + gr_make_io_signature2(1, 2, sizeof(gr_complex)*fft_length, sizeof(char)), gr_make_io_signature2(1, 2, @@ -54,8 +54,8 @@ digital_ofdm_insert_preamble::digital_ofdm_insert_preamble d_pending_flag(0) { // sanity check preamble symbols - for (size_t i = 0; i < d_preamble.size(); i++){ - if (d_preamble[i].size() != (size_t) d_fft_length) + for(size_t i = 0; i < d_preamble.size(); i++) { + if(d_preamble[i].size() != (size_t) d_fft_length) throw std::invalid_argument("digital_ofdm_insert_preamble: invalid length for preamble symbol"); } @@ -67,15 +67,22 @@ digital_ofdm_insert_preamble::~digital_ofdm_insert_preamble() { } +void digital_ofdm_insert_preamble::forecast (int noutput_items, gr_vector_int &ninput_items_required) +{ + ninput_items_required[0] = noutput_items; +} + int -digital_ofdm_insert_preamble::general_work (int noutput_items, - gr_vector_int &ninput_items_v, - gr_vector_const_void_star &input_items, - gr_vector_void_star &output_items) +digital_ofdm_insert_preamble::general_work(int noutput_items, + gr_vector_int &ninput_items_v, + gr_vector_const_void_star &input_items, + gr_vector_void_star &output_items) { - int ninput_items = std::min(ninput_items_v[0], ninput_items_v[1]); + int ninput_items = ninput_items_v.size()==2?std::min(ninput_items_v[0], ninput_items_v[1]):ninput_items_v[0]; const gr_complex *in_sym = (const gr_complex *) input_items[0]; - const unsigned char *in_flag = (const unsigned char *) input_items[1]; + const unsigned char *in_flag = 0; + if (input_items.size() == 2) + in_flag = (const unsigned char *) input_items[1]; gr_complex *out_sym = (gr_complex *) output_items[0]; unsigned char *out_flag = 0; @@ -97,14 +104,14 @@ digital_ofdm_insert_preamble::general_work (int noutput_items, while (no < noutput_items && ni < ninput_items){ switch(d_state){ case ST_IDLE: - if (in_flag[ni] & 0x1) // this is first symbol of new payload + if (in_flag && in_flag[ni] & 0x1) // this is first symbol of new payload enter_preamble(); else ni++; // eat one input symbol break; case ST_PREAMBLE: - assert(in_flag[ni] & 0x1); + assert(!in_flag || in_flag[ni] & 0x1); if (d_nsymbols_output >= (int) d_preamble.size()){ // we've output all the preamble enter_first_payload(); @@ -133,7 +140,7 @@ digital_ofdm_insert_preamble::general_work (int noutput_items, break; case ST_PAYLOAD: - if (in_flag[ni] & 0x1){ // this is first symbol of a new payload + if (in_flag && in_flag[ni] & 0x1){ // this is first symbol of a new payload enter_preamble(); break; } |