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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/packed_to_unpacked_impl.cc | |
| parent | 896d1c9da31963ecf5b0d90942c2af51ca998a69 (diff) | |
| parent | 5ad935c3a3dd46ce2860b13e2b774e4841784616 (diff) | |
Merge remote-tracking branch 'origin/next' into merge_next
Diffstat (limited to 'gr-blocks/lib/packed_to_unpacked_impl.cc')
| -rw-r--r-- | gr-blocks/lib/packed_to_unpacked_impl.cc | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/gr-blocks/lib/packed_to_unpacked_impl.cc b/gr-blocks/lib/packed_to_unpacked_impl.cc new file mode 100644 index 0000000000..ed84f7ecf0 --- /dev/null +++ b/gr-blocks/lib/packed_to_unpacked_impl.cc @@ -0,0 +1,152 @@ +/* -*- c++ -*- */ +/* + * Copyright 2004,2013,2018 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 "packed_to_unpacked_impl.h" +#include <gnuradio/io_signature.h> +#include <assert.h> + +namespace gr { + namespace blocks { + + template <class T> + typename packed_to_unpacked<T>::sptr + packed_to_unpacked<T>::make(unsigned int bits_per_chunk, + endianness_t endianness) + { + return gnuradio::get_initial_sptr + (new packed_to_unpacked_impl<T> (bits_per_chunk, endianness)); + } + + template <class T> + packed_to_unpacked_impl<T> ::packed_to_unpacked_impl(unsigned int bits_per_chunk, + endianness_t endianness) + : block("packed_to_unpacked", + 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 <= this->d_bits_per_type); + assert(bits_per_chunk > 0); + + this->set_relative_rate((uint64_t)BITS_PER_TYPE, (uint64_t)bits_per_chunk); + } + + template <class T> + packed_to_unpacked_impl<T> ::~packed_to_unpacked_impl() + { + } + + template <class T> + void + packed_to_unpacked_impl<T> ::forecast(int noutput_items, + gr_vector_int &ninput_items_required) + { + int input_required = (int)ceil((d_index + noutput_items * d_bits_per_chunk) + / (1.0 * this->d_bits_per_type)); + unsigned ninputs = ninput_items_required.size(); + for(unsigned int i = 0; i < ninputs; i++) { + ninput_items_required[i] = input_required; + //printf("Forecast wants %d needs %d\n",noutput_items,ninput_items_required[i]); + } + } + + template <class T> + unsigned int + packed_to_unpacked_impl<T>::get_bit_le(const T *in_vector, unsigned int bit_addr) + { + T x = in_vector[bit_addr >> this->d_log2_l_type]; + return (x >> (bit_addr & (this->d_bits_per_type-1))) & 1; + } + + template <class T> + unsigned int + packed_to_unpacked_impl<T>::get_bit_be(const T *in_vector, unsigned int bit_addr) + { + T x = in_vector[bit_addr >> this->d_log2_l_type]; + return (x >> ((this->d_bits_per_type-1) - (bit_addr & (this->d_bits_per_type-1)))) & 1; + } + + template <class T> + int + packed_to_unpacked_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 + + switch(d_endianness) { + case GR_MSB_FIRST: + for(int i = 0; i < noutput_items; i++) { + //printf("here msb %d\n",i); + T x = 0; + for(unsigned int j = 0; j < d_bits_per_chunk; j++, index_tmp++) + x = (x<<1) | get_bit_be(in, index_tmp); + out[i] = x; + } + break; + + case GR_LSB_FIRST: + for(int i = 0; i < noutput_items; i++) { + //printf("here lsb %d\n",i); + T x = 0; + for(unsigned int j = 0; j < d_bits_per_chunk; j++, index_tmp++) + x = (x<<1) | get_bit_le(in, index_tmp); + out[i] = x; + } + break; + + default: + assert(0); + } + + //printf("almost got to end\n"); + assert(ninput_items[m] >= (int)((d_index+(this->d_bits_per_type-1)) >> this->d_log2_l_type)); + } + + d_index = index_tmp; + this->consume_each(d_index >> this->d_log2_l_type); + d_index = d_index & (this->d_bits_per_type-1); + //printf("got to end\n"); + return noutput_items; + } + +template class packed_to_unpacked<std::uint8_t>; +template class packed_to_unpacked<std::int16_t>; +template class packed_to_unpacked<std::int32_t>; + } /* namespace blocks */ +} /* namespace gr */ |