: FT8 demod: implement Qt dependency and export for MSVC

exports/export.h

@@ -151,4 +151,16 @@
 #  define MODEMM17_API
 #endif
 
+/* the 'FT8_API' controls the import/export of 'ft8' symbols
+ */
+#if !defined(sdrangel_STATIC)
+#  ifdef ft8_EXPORTS
+#    define FT8_API __SDR_EXPORT
+#  else
+#    define FT8_API __SDR_IMPORT
+#  endif
+#else
+#  define FT8_API
+#endif
+
 #endif /* __SDRANGEL_EXPORT_H */

ft8/CMakeLists.txt

@@ -18,12 +18,17 @@ set(ft8_HEADERS
     util.h
 )
 
+include_directories(
+    ${CMAKE_SOURCE_DIR}/exports
+)
+
 add_library(ft8 SHARED
     ${ft8_SOURCES}
 )
 
 target_link_libraries(ft8
     ${FFTW3F_LIBRARIES}
+    Qt::Core
 )
 
 install(TARGETS ft8 DESTINATION ${INSTALL_LIB_DIR})

ft8/fft.cpp

@@ -19,8 +19,9 @@
 // along with this program. If not, see <http://www.gnu.org/licenses/>.          //
 ///////////////////////////////////////////////////////////////////////////////////
 
-#include "fft.h"
 #include <assert.h>
+#include <QDebug>
+#include "fft.h"
 #include "util.h"
 
 #define TIMING 0
@@ -564,7 +565,7 @@ void FFTEngine::fft_stats()
     for (int i = 0; i < nplans; i++)
     {
         Plan *p = plans[i];
-        printf("%-13s %6d %9d %6.3f\n",
+        qDebug("FT8::FFTEngine::fft_stats: %-13s %6d %9d %6.3fn",
                 p->why_,
                 p->n_,
                 p->uses_,

ft8/fft.h

@@ -27,9 +27,11 @@
 #include <complex>
 #include <fftw3.h>
 
+#include "export.h"
+
 namespace FT8
 {
-class FFTEngine
+class FT8_API FFTEngine
 {
 public:
     // a cached fftw plan, for both of:

ft8/ft8.cpp

@@ -43,6 +43,8 @@
 #include <random>
 #include <functional>
 #include <map>
+// #include <QDebug>
+
 #include "util.h"
 #include "ft8.h"
 #include "libldpc.h"
@@ -490,7 +492,7 @@ int FT8::blocksize(int rate)
 
 
 //
-// look for potential signals by searching FFT bins for Costas symbol
+// look for potential psignals by searching FFT bins for Costas symbol
 // blocks. returns a vector of candidate positions.
 //
 std::vector<Strength> FT8::coarse(const FFTEngine::ffts_t &bins, int si0, int si1)
@@ -2737,17 +2739,17 @@ int FT8::one_iter(const std::vector<float> &samples200, int best_off, float hz_f
 float FT8::guess_snr(const FFTEngine::ffts_t &m79)
 {
     int costas[] = {3, 1, 4, 0, 6, 5, 2};
-    float noises = 0;
-    float signals = 0;
+    float pnoises = 0;
+    float psignals = 0;
 
     for (int i = 0; i < 7; i++)
     {
-        signals += std::abs(m79[i][costas[i]]);
-        signals += std::abs(m79[36 + i][costas[i]]);
-        signals += std::abs(m79[72 + i][costas[i]]);
-        noises += std::abs(m79[i][(costas[i] + 4) % 8]);
-        noises += std::abs(m79[36 + i][(costas[i] + 4) % 8]);
-        noises += std::abs(m79[72 + i][(costas[i] + 4) % 8]);
+        psignals += std::abs(m79[i][costas[i]]);
+        psignals += std::abs(m79[36 + i][costas[i]]);
+        psignals += std::abs(m79[72 + i][costas[i]]);
+        pnoises += std::abs(m79[i][(costas[i] + 4) % 8]);
+        pnoises += std::abs(m79[36 + i][(costas[i] + 4) % 8]);
+        pnoises += std::abs(m79[72 + i][(costas[i] + 4) % 8]);
     }
 
     for (int i = 0; i < 79; i++)
@@ -2760,17 +2762,17 @@ float FT8::guess_snr(const FFTEngine::ffts_t &m79)
             v[j] = std::abs(m79[i][j]);
         }
         std::sort(v.begin(), v.end());
-        signals += v[7]; // strongest tone, probably the signal
-        noises += (v[2] + v[3] + v[4]) / 3;
+        psignals += v[7]; // strongest tone, probably the signal
+        pnoises += (v[2] + v[3] + v[4]) / 3;
     }
 
-    noises /= 79;
-    signals /= 79;
+    pnoises /= 79;
+    psignals /= 79;
 
-    noises *= noises; // square yields power
-    signals *= signals;
+    pnoises *= pnoises; // square yields power
+    psignals *= psignals;
 
-    float raw = signals / noises;
+    float raw = psignals / pnoises;
     raw -= 1; // turn (s+n)/n into s/n
     if (raw < 0.1)
         raw = 0.1;
@@ -2956,7 +2958,7 @@ void FT8::fine(const FFTEngine::ffts_t &m79, int, float &adj_hz, float &adj_off)
     if (nlate > 0)
         late /= nlate;
 
-    // printf("early %d %.1f, late %d %.1f\n", nearly, early, nlate, late);
+    // qDebug("early %d %.1f, late %d %.1f", nearly, early, nlate, late);
 
     // assumes 32 samples/symbol.
     if (nearly > 2 * nlate)

ft8/ft8.h

@@ -25,9 +25,11 @@
 #include <mutex>
 #include "fft.h"
 
+#include "export.h"
+
 namespace FT8 {
 // Callback interface to get the results
-class CallbackInterface
+class FT8_API CallbackInterface
 {
 public:
     virtual int hcb(
@@ -54,7 +56,7 @@ public:
 // 4: similar to 3.
 // 5: laplace
 //
-class Stats
+class FT8_API Stats
 {
 public:
     std::vector<float> a_;
@@ -89,7 +91,7 @@ private:
     float log_rate_;
 };
 
-class Strength
+class FT8_API Strength
 {
 public:
     float hz_;
@@ -99,7 +101,7 @@ public:
 
 // same as Python class CDECODE
 //
-struct cdecode
+struct FT8_API cdecode
 {
     float hz0;
     float hz1;
@@ -121,7 +123,7 @@ struct cdecode
 // total transmission time is 12.64 seconds
 
 // tunable parameters
-struct FT8Params
+struct FT8_API FT8Params
 {
     int nthreads;            // number of parallel threads, for multi-core
     int npasses_one;         // number of spectral subtraction passes
@@ -260,7 +262,7 @@ struct FT8Params
 }; // class FT8Params
 
 // The FT8 worker
-class FT8
+class FT8_API FT8
 {
 public:
     std::thread *th_;
@@ -649,7 +651,7 @@ private:
     static const double apriori174[];
 }; // class FT8
 
-class FT8Decoder {
+class FT8_API FT8Decoder {
 public:
     void entry(
         float xsamples[],
@@ -669,7 +671,7 @@ public:
     FT8Params& getParams() { return params; }
 private:
     FT8Params params;
-};
+}; // FT8Decoder
 
 } // namespace FT8
 

ft8/osd.h

@@ -23,13 +23,13 @@
 
 namespace FT8 {
 
-    extern int gen_sys[174][91];
-    int check_crc(const int a91[91]);
-    void ldpc_encode(int plain[91], int codeword[174]);
-    float osd_score(int xplain[91], float ll174[174]);
-    int osd_check(const int plain[91]);
-    void matmul(int a[91][91], int b[91], int c[91]);
-    int osd_decode(float codeword[174], int depth, int out[91], int *out_depth);
+extern int gen_sys[174][91];
+int check_crc(const int a91[91]);
+void ldpc_encode(int plain[91], int codeword[174]);
+float osd_score(int xplain[91], float ll174[174]);
+int osd_check(const int plain[91]);
+void matmul(int a[91][91], int b[91], int c[91]);
+int osd_decode(float codeword[174], int depth, int out[91], int *out_depth);
 
 } // namepsace FT8
 

ft8/unpack.h

@@ -21,6 +21,8 @@
 #ifndef unpack_h
 #define unpack_h
 
+#include <string>
+
 namespace FT8 {
 
 std::string unpack(int a91[], std::string& call1str, std::string& call2str, std::string& locstr);

ft8/util.h

@@ -24,8 +24,8 @@
 #include <vector>
 #include <complex>
 
-namespace FT8
-{
+namespace FT8 {
+
 double now();
 void writetxt(std::vector<float> v, const char *filename);
 std::complex<float> goertzel(std::vector<float> v, int rate, int i0, int n, float hz);
@@ -51,6 +51,7 @@ std::string trim(const std::string &s);
 
 typedef unsigned long ulong;
 typedef unsigned int uint;
+
 } // namespace FT8
 
 #endif

logging/CMakeLists.txt

@@ -8,7 +8,7 @@ set(logging_SOURCES
    logmessage.cpp
 )
 
-set(httpserver_HEADERS
+set(logging_HEADERS
    dualfilelogger.h
    loggerwithfile.h
    filelogger.h