baz_rtl_source_c.h

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/* -*- c++ -*- */
/*
 * Copyright 2004,2013 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.
 */

/*
 * gr-baz by Balint Seeber (http://spench.net/contact)
 * Information, documentation & samples: http://wiki.spench.net/wiki/gr-baz
 */

#ifndef INCLUDED_BAZ_RTL_SOURCE_C_H
#define INCLUDED_BAZ_RTL_SOURCE_C_H

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <gr_block.h>
#include <gr_msg_queue.h>

#if defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
#define NOMINMAX
#endif

#include <boost/thread.hpp>
#include <boost/thread/condition.hpp>
#include <boost/thread/recursive_mutex.hpp>
#ifdef HAVE_XTIME
#include <boost/thread/xtime.hpp>
#endif // HAVE_XTIME

#include <libusb-1.0/libusb.h>  // FIXME: Automake
#include <stdarg.h>     // va_list

#include "rtl2832.h"

class BAZ_API baz_rtl_source_c;
typedef boost::shared_ptr<baz_rtl_source_c> baz_rtl_source_c_sptr;

/*!
 * \brief Return a shared_ptr to a new instance of baz_rtl_source_c.
 */
BAZ_API baz_rtl_source_c_sptr baz_make_rtl_source_c(bool defer_creation = false, int output_size = 0);

/*!
 * \brief capture samples from an RTL2832-based device.
 * \ingroup block
 *
 * \sa gr-baz: http://wiki.spench.net/wiki/gr-baz
 */
class BAZ_API baz_rtl_source_c : public gr_block, public RTL2832_NAMESPACE::log_sink
{
private:
        friend BAZ_API baz_rtl_source_c_sptr baz_make_rtl_source_c(bool defer_creation, int output_size);
private:
        baz_rtl_source_c(bool defer_creation = false, int output_size = 0);
 public:
        ~baz_rtl_source_c();
private:
        RTL2832_NAMESPACE::demod m_demod;
        size_t m_recv_samples_per_packet;
        uint64_t m_nSamplesReceived;
        uint32_t m_nOverflows;
        bool m_bRunning;
        boost::recursive_mutex d_mutex;
        boost::thread m_pCaptureThread;
        uint32_t m_nBufferSize;
        uint32_t m_nBufferStart;
        uint32_t m_nBufferItems;
        boost::condition m_hPacketEvent;
        uint8_t* m_pUSBBuffer;
        bool m_bBuffering;
        uint32_t m_nReadLength;
        uint32_t m_nBufferMultiplier;
        bool m_bUseBuffer;
        float m_fBufferLevel;
        uint32_t m_nReadPacketCount;
        uint32_t m_nBufferOverflowCount;
        uint32_t m_nBufferUnderrunCount;
#ifdef HAVE_XTIME
        boost::xtime m_wait_delay, m_wait_next;
#endif // HAVE_XTIME
private:
        RTL2832_NAMESPACE::demod::PARAMS m_demod_params;
        bool m_verbose;
        bool m_relative_gain;
        int m_output_size;
        gr_msg_queue_sptr m_status_queue;
private:
        enum log_level
        {
                LOG_LEVEL_ERROR         = RTL2832_NAMESPACE::log_sink::LOG_LEVEL_ERROR,
                LOG_LEVEL_INFO          = RTL2832_NAMESPACE::log_sink::LOG_LEVEL_DEFAULT,
                LOG_LEVEL_VERBOSE       = RTL2832_NAMESPACE::log_sink::LOG_LEVEL_VERBOSE
        };
private: // log_sink
        void on_log_message_va(int level, const char* msg, va_list args)
        { log(level, msg, args); }
private:
        void log(int level, const char* message, va_list args);
#define IMPLEMENT_LOG_FUNCTION(suffix,level) \
        inline void log_##suffix(const char* message, ...) \
        { va_list args; va_start(args, message); log(level, message, args); }
        IMPLEMENT_LOG_FUNCTION(error, LOG_LEVEL_ERROR)
        IMPLEMENT_LOG_FUNCTION(verbose, LOG_LEVEL_VERBOSE)
private:
        void reset();
        static void _capture_thread(baz_rtl_source_c* p);
        void capture_thread();
        void report_status(int status);
public:
        void set_defaults();
        bool set_output_format(int size);
        void set_status_msgq(gr_msg_queue_sptr queue);
        bool create(bool reset_defaults = false);
        void destroy();
public: // SWIG demod params set only
        inline void set_vid(uint16_t vid)
        { m_demod_params.vid = vid; }
        inline void set_pid(uint16_t pid)
        { m_demod_params.pid = pid; }
        inline void set_default_timeout(int timeout)    // 0: use default, -1: poll only
        { m_demod_params.default_timeout = timeout; }
        inline void set_fir_coefficients(const std::vector</*uint8_t*/int>& coeffs)
        { m_demod_params.use_custom_fir_coefficients = !coeffs.empty(); for (size_t i = 0; i < std::min(/*RTL2832_NAMESPACE::demod::*/RTL2832_FIR_COEFF_COUNT, (int)coeffs.size()); ++i) m_demod_params.fir_coeff[i] = (uint8_t)coeffs[i]; }
        inline void set_crystal_frequency(uint32_t freq)
        { m_demod_params.crystal_frequency = freq; }
        inline void set_tuner_name(const char* name)
        { if (name == NULL) m_demod_params.tuner_name[0] = '\0'; else strncpy(m_demod_params.tuner_name, name, /*RTL2832_NAMESPACE::demod::*/RTL2832_TUNER_NAME_LEN-1); }
public: // SWIG get only
        inline size_t recv_samples_per_packet() const
        { return m_recv_samples_per_packet; }
        inline uint64_t samples_received() const
        { return m_nSamplesReceived; }
        inline uint32_t overflows() const
        { return m_nOverflows; }
        inline bool running() const
        { return m_bRunning; }
        inline uint32_t buffer_size() const
        { return m_nBufferSize; }
        inline uint32_t buffer_times() const
        { return m_nBufferItems; }
        inline bool buffering() const
        { return m_bBuffering; }
        inline uint32_t read_packet_count() const
        { return m_nReadPacketCount; }
        inline uint32_t buffer_overflow_count() const
        { return m_nBufferOverflowCount; }
        inline uint32_t buffer_underrun_count() const
        { return m_nBufferUnderrunCount; }
public: // SWIG set (pre-create)
        inline void set_relative_gain(bool on = true)
        { m_relative_gain = on; }
        inline void set_verbose(bool on = true)
        { m_verbose = on; }
        inline void set_read_length(uint32_t length)
        { if (length > 0) m_nReadLength = length; }
        inline void set_buffer_multiplier(uint32_t mul)
        { m_nBufferMultiplier = mul; }
        inline void set_use_buffer(bool use = true)
        { m_bUseBuffer = use; }
        inline void set_buffer_level(float level)
        { m_fBufferLevel = level; }
public: // SWIG get
        inline bool relative_gain() const
        { return m_relative_gain; }
        inline bool verbose() const
        { return m_verbose; }
        inline uint32_t read_length() const
        { return m_nReadLength; }
        inline uint32_t buffer_multiplier() const
        { return m_nBufferMultiplier; }
        inline bool use_buffer() const
        { return m_bUseBuffer; }
        inline float buffer_level() const
        { return m_fBufferLevel; }
public: // SWIG set
        bool set_sample_rate(double sample_rate);
        bool set_frequency(double freq);
        bool set_gain(double gain);
        bool set_bandwidth(double bandwidth);
        bool set_gain_mode(int mode);
        bool set_gain_mode(const char* mode);
        bool set_auto_gain_mode(bool on = true);
public: // SWIG get
        inline const char* name() const
        { return m_demod.name(); }
        inline double sample_rate() const
        { return m_demod.sample_rate(); }
        inline RTL2832_NAMESPACE::range_t sample_rate_range() const
        { return m_demod.sample_rate_range(); }
        inline double frequency() const
        { return m_demod.active_tuner()->frequency(); }
        inline double gain() const
        { return m_demod.active_tuner()->gain(); }
        inline double bandwidth() const
        { return m_demod.active_tuner()->bandwidth(); }
        inline int gain_mode() const
        { return m_demod.active_tuner()->gain_mode(); }
        std::string gain_mode_string() const;
        inline bool auto_gain_mode() const
        { return m_demod.active_tuner()->auto_gain_mode(); }
public: // SWIG get: tuner ranges/values
        inline RTL2832_NAMESPACE::range_t gain_range() const
        { return m_demod.active_tuner()->gain_range(); }
        inline RTL2832_NAMESPACE::values_t gain_values() const
        { return m_demod.active_tuner()->gain_values(); }
        inline RTL2832_NAMESPACE::range_t frequency_range() const
        { return m_demod.active_tuner()->frequency_range(); }
        inline RTL2832_NAMESPACE::range_t bandwidth_range() const
        { return m_demod.active_tuner()->bandwidth_range(); }
        inline RTL2832_NAMESPACE::values_t bandwidth_values() const
        { return m_demod.active_tuner()->bandwidth_values(); }
        inline RTL2832_NAMESPACE::num_name_map_t gain_modes() const
        { return m_demod.active_tuner()->gain_modes(); }
        inline std::pair<bool,int> calc_appropriate_gain_mode()/* const*/
        { int i; bool b = m_demod.active_tuner()->calc_appropriate_gain_mode(i); return std::make_pair(b,i); }
public: // gr_block overrides
        bool start();
        bool stop();
public:
        int general_work (int noutput_items,
                gr_vector_int &ninput_items,
                gr_vector_const_void_star &input_items,
                gr_vector_void_star &output_items);
};

#endif /* INCLUDED_BAZ_RTL_SOURCE_C_H */