kopia lustrzana https://github.com/f4exb/sdrangel
SDRdaemon: sample buffer dedicated to channel source
f4exb
rodzic
c1bd4f6b44
commit
083f31aed4
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@ -12,6 +12,7 @@ set(sdrdaemon_SOURCES
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channel/sdrdaemonchannelsinksettings.cpp
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channel/sdrdaemonchannelsourcesettings.cpp
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channel/sdrdaemonchannelsourcethread.cpp
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channel/sdrdaemonchannelsourcebuffer.cpp
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webapi/webapiadapterdaemon.cpp
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webapi/webapirequestmapper.cpp
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webapi/webapiserver.cpp
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@ -30,6 +31,7 @@ set(sdrdaemon_HEADERS
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channel/sdrdaemonchannelsinksettings.h
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channel/sdrdaemonchannelsourcesettings.h
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channel/sdrdaemonchannelsourcethread.h
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channel/sdrdaemonchannelsourcebuffer.h
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webapi/webapiadapterdaemon.h
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webapi/webapirequestmapper.h
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webapi/webapiserver.h
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@ -0,0 +1,85 @@
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///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2018 Edouard Griffiths, F4EXB. //
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// //
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// SDRdaemon source channel (Tx). Samples buffer //
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// //
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// SDRdaemon is a detached SDR front end that handles the interface with a //
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// physical device and sends or receives the I/Q samples stream to or from a //
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// SDRangel instance via UDP. It is controlled via a Web REST API. //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include "channel/sdrdaemonchannelsourcebuffer.h"
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SDRDaemonChannelSourceBuffer::SDRDaemonChannelSourceBuffer(uint32_t nbSamples)
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{
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m_buffer = new Sample[nbSamples];
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m_wp = nbSamples/2;
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m_rp = 0;
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m_size = nbSamples;
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}
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SDRDaemonChannelSourceBuffer::~SDRDaemonChannelSourceBuffer()
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{
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delete[] m_buffer;
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}
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void SDRDaemonChannelSourceBuffer::resize(uint32_t nbSamples)
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{
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if (nbSamples > m_size)
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{
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delete[] m_buffer;
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m_buffer = new Sample[nbSamples];
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}
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m_wp = nbSamples/2;
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m_rp = 0;
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m_size = nbSamples;
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}
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void SDRDaemonChannelSourceBuffer::write(Sample *begin, uint32_t nbSamples)
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{
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if (m_wp + nbSamples < m_size)
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{
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std::copy(begin, begin+nbSamples, &m_buffer[m_wp]);
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m_wp += nbSamples;
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}
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else // wrap
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{
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int first = m_size - m_wp;
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std::copy(begin, begin+first, &m_buffer[m_wp]);
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int second = nbSamples - first;
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std::copy(begin+first, begin+nbSamples, m_buffer);
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m_wp = second;
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}
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}
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void SDRDaemonChannelSourceBuffer::readOne(Sample& sample)
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{
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sample = m_buffer[m_rp];
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m_rp++;
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if (m_rp == m_size) { // wrap
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m_rp = 0;
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}
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}
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int SDRDaemonChannelSourceBuffer::getRWBalancePercent()
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{
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if (m_wp > m_rp) {
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return (((m_wp - m_rp) - (m_size/2))*100)/m_size;
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} else {
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return (((m_size/2) - (m_rp - m_wp))*100)/m_size;
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}
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}
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@ -0,0 +1,42 @@
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///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2018 Edouard Griffiths, F4EXB. //
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// //
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// SDRdaemon source channel (Tx). Samples buffer //
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// //
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// SDRdaemon is a detached SDR front end that handles the interface with a //
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// physical device and sends or receives the I/Q samples stream to or from a //
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// SDRangel instance via UDP. It is controlled via a Web REST API. //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include <stdint.h>
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#include "dsp/dsptypes.h"
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class SDRDaemonChannelSourceBuffer
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{
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public:
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SDRDaemonChannelSourceBuffer(uint32_t nbSamples);
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~SDRDaemonChannelSourceBuffer();
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void resize(uint32_t nbSamples);
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void write(Sample *begin, uint32_t nbSamples);
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void readOne(Sample& sample);
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int getRWBalancePercent(); //!< positive write leads, negative read leads, balance = 0, percentage of buffer size
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private:
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Sample *m_buffer;
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uint32_t m_size;
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uint32_t m_rp;
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uint32_t m_wp;
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};
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