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| author | Marcus Müller <marcus@hostalia.de> | 2018-08-31 23:02:22 +0200 |
|---|---|---|
| committer | Marcus Müller <marcus@hostalia.de> | 2018-08-31 23:02:22 +0200 |
| commit | 254fe5e89403d4de1fa6663d09efdf946996aff3 (patch) | |
| tree | 62877d7ac7fdedf6c397c51e22ac6f97eba97ddf /gr-blocks/lib/unpacked_to_packed_impl.cc | |
| parent | 896d1c9da31963ecf5b0d90942c2af51ca998a69 (diff) | |
| parent | 5ad935c3a3dd46ce2860b13e2b774e4841784616 (diff) | |
Merge remote-tracking branch 'origin/next' into merge_next
Diffstat (limited to 'gr-blocks/lib/unpacked_to_packed_impl.cc')
| -rw-r--r-- | gr-blocks/lib/unpacked_to_packed_impl.cc | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/gr-blocks/lib/unpacked_to_packed_impl.cc b/gr-blocks/lib/unpacked_to_packed_impl.cc new file mode 100644 index 0000000000..54bcfd3c0b --- /dev/null +++ b/gr-blocks/lib/unpacked_to_packed_impl.cc @@ -0,0 +1,150 @@ +/* -*- c++ -*- */ +/* + * Copyright 2004,2006,2013,2018 Free Software Foundation, Inc. + * + * This file is part of GNU Radio + * + * GNU Radio 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, or (at your option) + * any later version. + * + * GNU Radio 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 GNU Radio; see the file COPYING. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, + * Boston, MA 02110-1301, USA. + */ + + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "unpacked_to_packed_impl.h" +#include <gnuradio/io_signature.h> +#include <assert.h> + +namespace gr { + namespace blocks { + + + template <class T> + typename unpacked_to_packed<T>::sptr + unpacked_to_packed<T>::make(unsigned int bits_per_chunk, + endianness_t endianness) + { + return gnuradio::get_initial_sptr + (new unpacked_to_packed_impl<T> (bits_per_chunk, endianness)); + } + + template <class T> + unpacked_to_packed_impl<T> ::unpacked_to_packed_impl(unsigned int bits_per_chunk, + endianness_t endianness) + : block("unpacked_to_packed", + io_signature::make(1, -1, sizeof(T)), + io_signature::make(1, -1, sizeof(T))), + d_bits_per_chunk(bits_per_chunk), d_endianness(endianness), d_index(0) + { + assert(bits_per_chunk <= d_bits_per_type); + assert(bits_per_chunk > 0); + + this->set_relative_rate((uint64_t)bits_per_chunk, (uint64_t)BITS_PER_TYPE); + } + + template <class T> + unpacked_to_packed_impl<T> ::~unpacked_to_packed_impl() + { + } + + template <class T> + void + unpacked_to_packed_impl<T> ::forecast(int noutput_items, + gr_vector_int &ninput_items_required) + { + int input_required = (int)ceil((d_index+noutput_items * 1.0 * d_bits_per_type) + / d_bits_per_chunk); + unsigned ninputs = ninput_items_required.size(); + for(unsigned int i = 0; i < ninputs; i++) { + ninput_items_required[i] = input_required; + } + } + + template <class T> + unsigned int + unpacked_to_packed_impl<T>::get_bit_be1(const T *in_vector, unsigned int bit_addr, + unsigned int bits_per_chunk) + { + unsigned int byte_addr = (int)bit_addr/bits_per_chunk; + T x = in_vector[byte_addr]; + unsigned int residue = bit_addr - byte_addr * bits_per_chunk; + //printf("Bit addr %d byte addr %d residue %d val %d\n",bit_addr,byte_addr,residue,(x>>(bits_per_chunk-1-residue))&1); + return (x >> (bits_per_chunk-1-residue)) & 1; + } + + template <class T> + int + unpacked_to_packed_impl<T> ::general_work(int noutput_items, + gr_vector_int &ninput_items, + gr_vector_const_void_star &input_items, + gr_vector_void_star &output_items) + { + unsigned int index_tmp = d_index; + + assert(input_items.size() == output_items.size()); + int nstreams = input_items.size(); + + for(int m=0; m< nstreams; m++) { + const T *in = (T *)input_items[m]; + T *out = (T *)output_items[m]; + index_tmp=d_index; + + // per stream processing + + //assert((ninput_items[m]-d_index)*d_bits_per_chunk >= noutput_items*d_bits_per_type); + + switch(d_endianness) { + + case GR_MSB_FIRST: + for(int i = 0; i < noutput_items; i++) { + T tmp=0; + for(unsigned int j = 0; j < d_bits_per_type; j++) { + tmp = (tmp<<1) | get_bit_be1(in, index_tmp, d_bits_per_chunk); + index_tmp++; + } + out[i] = tmp; + } + break; + + case GR_LSB_FIRST: + for(int i = 0; i < noutput_items; i++) { + unsigned long tmp=0; + for(unsigned int j = 0; j < d_bits_per_type; j++) { + tmp = (tmp>>1) | (get_bit_be1(in, index_tmp, d_bits_per_chunk) << (d_bits_per_type-1)); + index_tmp++; + } + out[i] = tmp; + } + break; + + default: + assert(0); + } + } + + d_index = index_tmp; + this->consume_each((int)(d_index/d_bits_per_chunk)); + d_index = d_index%d_bits_per_chunk; + + return noutput_items; + } + +template class unpacked_to_packed<std::uint8_t>; +template class unpacked_to_packed<std::int16_t>; +template class unpacked_to_packed<std::int32_t>; + } /* namespace blocks */ +} /* namespace gr */ |