summaryrefslogtreecommitdiffstats
path: root/src/OutputSoapy.h
blob: 230f11b1d0a5a7ad99629acbe3c3e7a26208cb80 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
/*
   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Her Majesty the
   Queen in Right of Canada (Communications Research Center Canada)

   Copyright (C) 2017
   Matthias P. Braendli, matthias.braendli@mpb.li

    http://opendigitalradio.org

DESCRIPTION:
   It is an output driver using the SoapySDR library that can output to
   many devices.
*/

/*
   This file is part of ODR-DabMod.

   ODR-DabMod 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 of the
   License, or (at your option) any later version.

   ODR-DabMod 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 ODR-DabMod.  If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once

#ifdef HAVE_CONFIG_H
#   include <config.h>
#endif

#ifdef HAVE_SOAPYSDR
#include <SoapySDR/Version.hpp>
#include <SoapySDR/Modules.hpp>
#include <SoapySDR/Registry.hpp>
#include <SoapySDR/Device.hpp>

#include <string>
#include <memory>

#include "ModPlugin.h"
#include "EtiReader.h"
#include "RemoteControl.h"
#include "ThreadsafeQueue.h"

typedef std::complex<float> complexf;

/* This structure is used as initial configuration for the Soapy output.
 * It must also contain all remote-controllable settings, otherwise
 * they will get lost on a modulator restart. */
struct OutputSoapyConfig {
    std::string device;

    long masterClockRate = 32768000;
    unsigned sampleRate = 2048000;
    double frequency = 0.0;
    double txgain = 0.0;
    unsigned dabMode = 0;
};

// Each frame contains one OFDM frame, and its
// associated timestamp
struct SoapyWorkerFrameData {
    // Buffer holding frame data
    std::vector<uint8_t> buf;

    // A full timestamp contains a TIST according to standard
    // and time information within MNSC with tx_second.
    struct frame_timestamp ts;
};

class SoapyWorker
{
    public:
        ThreadsafeQueue<SoapyWorkerFrameData> queue;
        SoapySDR::Device *m_device;
        std::atomic<bool> running;
        size_t underflows;
        size_t overflows;

        SoapyWorker() {}
        SoapyWorker(const SoapyWorker&) = delete;
        SoapyWorker operator=(const SoapyWorker&) = delete;
        ~SoapyWorker() { stop(); }

        void start(SoapySDR::Device *device);
        void stop(void);

    private:
        std::thread m_thread;

        void process_start(void);
        void process(SoapySDR::Stream *stream);
};

class OutputSoapy: public ModOutput, public RemoteControllable
{
    public:
        OutputSoapy(OutputSoapyConfig& config);
        OutputSoapy(const OutputSoapy& other) = delete;
        OutputSoapy& operator=(const OutputSoapy& other) = delete;
        ~OutputSoapy();

        int process(Buffer* dataIn);

        const char* name() { return "OutputSoapy"; }

        void setETISource(EtiSource *etiSource);

        /*********** REMOTE CONTROL ***************/

        /* Base function to set parameters. */
        virtual void set_parameter(const std::string& parameter,
                const std::string& value);

        /* Getting a parameter always returns a string. */
        virtual const std::string get_parameter(
                const std::string& parameter) const;


    protected:
        SoapyWorker m_worker;
        EtiSource *m_eti_source;
        OutputSoapyConfig& m_conf;

        SoapySDR::Device *m_device;

        bool first_run = true;
};


#endif //HAVE_SOAPYSDR