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bladeRF: Use VOLK for type conversion 

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
This commit is contained in:
Sylvain Munaut 2016-10-23 16:44:39 +02:00 committed by Dimitri Stolnikov
parent 43df1c98c4
commit 71846180f5
2 changed files with 7 additions and 19 deletions
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7
lib/bladerf/bladerf_sink_c.cc
View File

@ -38,6 +38,8 @@
#include <gnuradio/tags.h>
#include <gnuradio/sync_block.h>
#include <volk/volk.h>
#include "arg_helpers.h"
#include "bladerf_sink_c.h"
@ -259,10 +261,7 @@ int bladerf_sink_c::work( int noutput_items,
}
/* Convert floating point samples into fixed point */
for (int i = 0; i < 2 * noutput_items;) {
_conv_buf[i++] = (int16_t)(scaling * real(*in));
_conv_buf[i++] = (int16_t)(scaling * imag(*in++));
}
volk_32f_s32f_convert_16i(_conv_buf, (float*)in, scaling, 2 * noutput_items);
if (_use_metadata) {
ret = transmit_with_tags(noutput_items);

19
lib/bladerf/bladerf_source_c.cc
View File

@ -36,6 +36,8 @@
#include <gnuradio/io_signature.h>
#include <volk/volk.h>
#include "arg_helpers.h"
#include "bladerf_source_c.h"
#include "osmosdr/source.h"
@ -139,8 +141,7 @@ int bladerf_source_c::work( int noutput_items,
gr_vector_void_star &output_items )
{
int ret;
int16_t *current;
const float scaling = 1.0f / 2048.0f;
const float scaling = 2048.0f;
gr_complex *out = static_cast<gr_complex *>(output_items[0]);
struct bladerf_metadata meta;
struct bladerf_metadata *meta_ptr = NULL;
@ -183,20 +184,8 @@ int bladerf_source_c::work( int noutput_items,
_consecutive_failures = 0;
}
current = _conv_buf;
/* Convert them from fixed to floating point */
for (int i = 0; i < noutput_items; ++i) {
float x, y;
x = scaling * *current;
current++;
y = scaling * *current;
current++;
out[i] = gr_complex(x, y) ;
}
volk_16i_s32f_convert_32f((float*)out, _conv_buf, scaling, 2*noutput_items);
return noutput_items;
}