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Now plotting IQ spectrum

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seems to only be showing half the bandwidth..
This commit is contained in:
Charles J. Cliffe 2014-10-30 22:51:33 -04:00
parent 2ef8010438
commit 7fe286cf0c
13 changed files with 1881 additions and 23 deletions
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7
CMakeLists.txt
View File

@ -59,8 +59,8 @@ include(${wxWidgets_USE_FILE})
if (DEFINED WIN32)
include_directories ( ${PROJECT_SOURCE_DIR}/external/rtl-sdr-release )
link_directories ( ${PROJECT_SOURCE_DIR}/external/rtl-sdr-release/x32 )
include_directories ( ${PROJECT_SOURCE_DIR}/external/fftw-3.3.4-dll32 ${PROJECT_SOURCE_DIR}/external/rtl-sdr-release )
link_directories ( ${PROJECT_SOURCE_DIR}/external/fftw-3.3.4-dll32 ${PROJECT_SOURCE_DIR}/external/rtl-sdr-release/x32 )
else (DEFINED WIN32)
set(RTLSDR_INCLUDE "/opt/local/include" CACHE FILEPATH "RTL-SDR Include Path")
set(RTLSDR_LIB "/opt/local/lib" CACHE FILEPATH "RTL-SDR Lib Path")
@ -84,13 +84,14 @@ SET (cubicsdr_headers
src/IQBufferThread.h
src/PrimaryGLContext.h
src/AppFrame.h
src/CubicSDRDefs.h
)
#configure_files(${PROJECT_SOURCE_DIR}/shaders ${PROJECT_BINARY_DIR}/shaders COPYONLY)
#configure_files(${PROJECT_SOURCE_DIR}/png ${PROJECT_BINARY_DIR}/png COPYONLY)
add_executable(CubicSDR ${cubicsdr_sources} ${cubicsdr_headers})
target_link_libraries(CubicSDR rtlsdr ${wxWidgets_LIBRARIES} ${OPENGL_LIBRARIES})
target_link_libraries(CubicSDR rtlsdr fftw3-3 ${wxWidgets_LIBRARIES} ${OPENGL_LIBRARIES})
# cubicvr2 glfw ${GLFW_LIBRARIES} ${OPENAL_LIBRARY}

340
external/fftw-3.3.4-dll32/COPYING vendored Normal file
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@ -0,0 +1,340 @@
GNU GENERAL PUBLIC LICENSE
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19
external/fftw-3.3.4-dll32/COPYRIGHT vendored Normal file
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@ -0,0 +1,19 @@
/*
* Copyright (c) 2003, 2007-14 Matteo Frigo
* Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/

414
external/fftw-3.3.4-dll32/fftw3.h vendored Normal file
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@ -0,0 +1,414 @@
/*
* Copyright (c) 2003, 2007-14 Matteo Frigo
* Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
*
* The following statement of license applies *only* to this header file,
* and *not* to the other files distributed with FFTW or derived therefrom:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/***************************** NOTE TO USERS *********************************
*
* THIS IS A HEADER FILE, NOT A MANUAL
*
* If you want to know how to use FFTW, please read the manual,
* online at http://www.fftw.org/doc/ and also included with FFTW.
* For a quick start, see the manual's tutorial section.
*
* (Reading header files to learn how to use a library is a habit
* stemming from code lacking a proper manual. Arguably, it's a
* *bad* habit in most cases, because header files can contain
* interfaces that are not part of the public, stable API.)
*
****************************************************************************/
#ifndef FFTW3_H
#define FFTW3_H
#include <stdio.h>
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/* If <complex.h> is included, use the C99 complex type. Otherwise
define a type bit-compatible with C99 complex */
#if !defined(FFTW_NO_Complex) && defined(_Complex_I) && defined(complex) && defined(I)
# define FFTW_DEFINE_COMPLEX(R, C) typedef R _Complex C
#else
# define FFTW_DEFINE_COMPLEX(R, C) typedef R C[2]
#endif
#define FFTW_CONCAT(prefix, name) prefix ## name
#define FFTW_MANGLE_DOUBLE(name) FFTW_CONCAT(fftw_, name)
#define FFTW_MANGLE_FLOAT(name) FFTW_CONCAT(fftwf_, name)
#define FFTW_MANGLE_LONG_DOUBLE(name) FFTW_CONCAT(fftwl_, name)
#define FFTW_MANGLE_QUAD(name) FFTW_CONCAT(fftwq_, name)
/* IMPORTANT: for Windows compilers, you should add a line
*/
#define FFTW_DLL
/*
here and in kernel/ifftw.h if you are compiling/using FFTW as a
DLL, in order to do the proper importing/exporting, or
alternatively compile with -DFFTW_DLL or the equivalent
command-line flag. This is not necessary under MinGW/Cygwin, where
libtool does the imports/exports automatically. */
#if defined(FFTW_DLL) && (defined(_WIN32) || defined(__WIN32__))
/* annoying Windows syntax for shared-library declarations */
# if defined(COMPILING_FFTW) /* defined in api.h when compiling FFTW */
# define FFTW_EXTERN extern __declspec(dllexport)
# else /* user is calling FFTW; import symbol */
# define FFTW_EXTERN extern __declspec(dllimport)
# endif
#else
# define FFTW_EXTERN extern
#endif
enum fftw_r2r_kind_do_not_use_me {
FFTW_R2HC=0, FFTW_HC2R=1, FFTW_DHT=2,
FFTW_REDFT00=3, FFTW_REDFT01=4, FFTW_REDFT10=5, FFTW_REDFT11=6,
FFTW_RODFT00=7, FFTW_RODFT01=8, FFTW_RODFT10=9, FFTW_RODFT11=10
};
struct fftw_iodim_do_not_use_me {
int n; /* dimension size */
int is; /* input stride */
int os; /* output stride */
};
#include <stddef.h> /* for ptrdiff_t */
struct fftw_iodim64_do_not_use_me {
ptrdiff_t n; /* dimension size */
ptrdiff_t is; /* input stride */
ptrdiff_t os; /* output stride */
};
typedef void (*fftw_write_char_func_do_not_use_me)(char c, void *);
typedef int (*fftw_read_char_func_do_not_use_me)(void *);
/*
huge second-order macro that defines prototypes for all API
functions. We expand this macro for each supported precision
X: name-mangling macro
R: real data type
C: complex data type
*/
#define FFTW_DEFINE_API(X, R, C) \
\
FFTW_DEFINE_COMPLEX(R, C); \
\
typedef struct X(plan_s) *X(plan); \
\
typedef struct fftw_iodim_do_not_use_me X(iodim); \
typedef struct fftw_iodim64_do_not_use_me X(iodim64); \
\
typedef enum fftw_r2r_kind_do_not_use_me X(r2r_kind); \
\
typedef fftw_write_char_func_do_not_use_me X(write_char_func); \
typedef fftw_read_char_func_do_not_use_me X(read_char_func); \
\
FFTW_EXTERN void X(execute)(const X(plan) p); \
\
FFTW_EXTERN X(plan) X(plan_dft)(int rank, const int *n, \
C *in, C *out, int sign, unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_dft_1d)(int n, C *in, C *out, int sign, \
unsigned flags); \
FFTW_EXTERN X(plan) X(plan_dft_2d)(int n0, int n1, \
C *in, C *out, int sign, unsigned flags); \
FFTW_EXTERN X(plan) X(plan_dft_3d)(int n0, int n1, int n2, \
C *in, C *out, int sign, unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_many_dft)(int rank, const int *n, \
int howmany, \
C *in, const int *inembed, \
int istride, int idist, \
C *out, const int *onembed, \
int ostride, int odist, \
int sign, unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_guru_dft)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
C *in, C *out, \
int sign, unsigned flags); \
FFTW_EXTERN X(plan) X(plan_guru_split_dft)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *ri, R *ii, R *ro, R *io, \
unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_guru64_dft)(int rank, \
const X(iodim64) *dims, \
int howmany_rank, \
const X(iodim64) *howmany_dims, \
C *in, C *out, \
int sign, unsigned flags); \
FFTW_EXTERN X(plan) X(plan_guru64_split_dft)(int rank, \
const X(iodim64) *dims, \
int howmany_rank, \
const X(iodim64) *howmany_dims, \
R *ri, R *ii, R *ro, R *io, \
unsigned flags); \
\
FFTW_EXTERN void X(execute_dft)(const X(plan) p, C *in, C *out); \
FFTW_EXTERN void X(execute_split_dft)(const X(plan) p, R *ri, R *ii, \
R *ro, R *io); \
\
FFTW_EXTERN X(plan) X(plan_many_dft_r2c)(int rank, const int *n, \
int howmany, \
R *in, const int *inembed, \
int istride, int idist, \
C *out, const int *onembed, \
int ostride, int odist, \
unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_dft_r2c)(int rank, const int *n, \
R *in, C *out, unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_dft_r2c_1d)(int n,R *in,C *out,unsigned flags); \
FFTW_EXTERN X(plan) X(plan_dft_r2c_2d)(int n0, int n1, \
R *in, C *out, unsigned flags); \
FFTW_EXTERN X(plan) X(plan_dft_r2c_3d)(int n0, int n1, \
int n2, \
R *in, C *out, unsigned flags); \
\
\
FFTW_EXTERN X(plan) X(plan_many_dft_c2r)(int rank, const int *n, \
int howmany, \
C *in, const int *inembed, \
int istride, int idist, \
R *out, const int *onembed, \
int ostride, int odist, \
unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_dft_c2r)(int rank, const int *n, \
C *in, R *out, unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_dft_c2r_1d)(int n,C *in,R *out,unsigned flags); \
FFTW_EXTERN X(plan) X(plan_dft_c2r_2d)(int n0, int n1, \
C *in, R *out, unsigned flags); \
FFTW_EXTERN X(plan) X(plan_dft_c2r_3d)(int n0, int n1, \
int n2, \
C *in, R *out, unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_guru_dft_r2c)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *in, C *out, \
unsigned flags); \
FFTW_EXTERN X(plan) X(plan_guru_dft_c2r)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
C *in, R *out, \
unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_guru_split_dft_r2c)( \
int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *in, R *ro, R *io, \
unsigned flags); \
FFTW_EXTERN X(plan) X(plan_guru_split_dft_c2r)( \
int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *ri, R *ii, R *out, \
unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_guru64_dft_r2c)(int rank, \
const X(iodim64) *dims, \
int howmany_rank, \
const X(iodim64) *howmany_dims, \
R *in, C *out, \
unsigned flags); \
FFTW_EXTERN X(plan) X(plan_guru64_dft_c2r)(int rank, \
const X(iodim64) *dims, \
int howmany_rank, \
const X(iodim64) *howmany_dims, \
C *in, R *out, \
unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_guru64_split_dft_r2c)( \
int rank, const X(iodim64) *dims, \
int howmany_rank, \
const X(iodim64) *howmany_dims, \
R *in, R *ro, R *io, \
unsigned flags); \
FFTW_EXTERN X(plan) X(plan_guru64_split_dft_c2r)( \
int rank, const X(iodim64) *dims, \
int howmany_rank, \
const X(iodim64) *howmany_dims, \
R *ri, R *ii, R *out, \
unsigned flags); \
\
FFTW_EXTERN void X(execute_dft_r2c)(const X(plan) p, R *in, C *out); \
FFTW_EXTERN void X(execute_dft_c2r)(const X(plan) p, C *in, R *out); \
\
FFTW_EXTERN void X(execute_split_dft_r2c)(const X(plan) p, \
R *in, R *ro, R *io); \
FFTW_EXTERN void X(execute_split_dft_c2r)(const X(plan) p, \
R *ri, R *ii, R *out); \
\
FFTW_EXTERN X(plan) X(plan_many_r2r)(int rank, const int *n, \
int howmany, \
R *in, const int *inembed, \
int istride, int idist, \
R *out, const int *onembed, \
int ostride, int odist, \
const X(r2r_kind) *kind, unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_r2r)(int rank, const int *n, R *in, R *out, \
const X(r2r_kind) *kind, unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_r2r_1d)(int n, R *in, R *out, \
X(r2r_kind) kind, unsigned flags); \
FFTW_EXTERN X(plan) X(plan_r2r_2d)(int n0, int n1, R *in, R *out, \
X(r2r_kind) kind0, X(r2r_kind) kind1, \
unsigned flags); \
FFTW_EXTERN X(plan) X(plan_r2r_3d)(int n0, int n1, int n2, \
R *in, R *out, X(r2r_kind) kind0, \
X(r2r_kind) kind1, X(r2r_kind) kind2, \
unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_guru_r2r)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *in, R *out, \
const X(r2r_kind) *kind, unsigned flags); \
\
FFTW_EXTERN X(plan) X(plan_guru64_r2r)(int rank, const X(iodim64) *dims, \
int howmany_rank, \
const X(iodim64) *howmany_dims, \
R *in, R *out, \
const X(r2r_kind) *kind, unsigned flags); \
\
FFTW_EXTERN void X(execute_r2r)(const X(plan) p, R *in, R *out); \
\
FFTW_EXTERN void X(destroy_plan)(X(plan) p); \
FFTW_EXTERN void X(forget_wisdom)(void); \
FFTW_EXTERN void X(cleanup)(void); \
\
FFTW_EXTERN void X(set_timelimit)(double t); \
\
FFTW_EXTERN void X(plan_with_nthreads)(int nthreads); \
FFTW_EXTERN int X(init_threads)(void); \
FFTW_EXTERN void X(cleanup_threads)(void); \
\
FFTW_EXTERN int X(export_wisdom_to_filename)(const char *filename); \
FFTW_EXTERN void X(export_wisdom_to_file)(FILE *output_file); \
FFTW_EXTERN char *X(export_wisdom_to_string)(void); \
FFTW_EXTERN void X(export_wisdom)(X(write_char_func) write_char, \
void *data); \
FFTW_EXTERN int X(import_system_wisdom)(void); \
FFTW_EXTERN int X(import_wisdom_from_filename)(const char *filename); \
FFTW_EXTERN int X(import_wisdom_from_file)(FILE *input_file); \
FFTW_EXTERN int X(import_wisdom_from_string)(const char *input_string); \
FFTW_EXTERN int X(import_wisdom)(X(read_char_func) read_char, void *data); \
\
FFTW_EXTERN void X(fprint_plan)(const X(plan) p, FILE *output_file); \
FFTW_EXTERN void X(print_plan)(const X(plan) p); \
FFTW_EXTERN char *X(sprint_plan)(const X(plan) p); \
\
FFTW_EXTERN void *X(malloc)(size_t n); \
FFTW_EXTERN R *X(alloc_real)(size_t n); \
FFTW_EXTERN C *X(alloc_complex)(size_t n); \
FFTW_EXTERN void X(free)(void *p); \
\
FFTW_EXTERN void X(flops)(const X(plan) p, \
double *add, double *mul, double *fmas); \
FFTW_EXTERN double X(estimate_cost)(const X(plan) p); \
FFTW_EXTERN double X(cost)(const X(plan) p); \
\
FFTW_EXTERN int X(alignment_of)(R *p); \
FFTW_EXTERN const char X(version)[]; \
FFTW_EXTERN const char X(cc)[]; \
FFTW_EXTERN const char X(codelet_optim)[];
/* end of FFTW_DEFINE_API macro */
FFTW_DEFINE_API(FFTW_MANGLE_DOUBLE, double, fftw_complex)
FFTW_DEFINE_API(FFTW_MANGLE_FLOAT, float, fftwf_complex)
FFTW_DEFINE_API(FFTW_MANGLE_LONG_DOUBLE, long double, fftwl_complex)
/* __float128 (quad precision) is a gcc extension on i386, x86_64, and ia64
for gcc >= 4.6 (compiled in FFTW with --enable-quad-precision) */
#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) \
&& !(defined(__ICC) || defined(__INTEL_COMPILER)) \
&& (defined(__i386__) || defined(__x86_64__) || defined(__ia64__))
# if !defined(FFTW_NO_Complex) && defined(_Complex_I) && defined(complex) && defined(I)
/* note: __float128 is a typedef, which is not supported with the _Complex
keyword in gcc, so instead we use this ugly __attribute__ version.
However, we can't simply pass the __attribute__ version to
FFTW_DEFINE_API because the __attribute__ confuses gcc in pointer
types. Hence redefining FFTW_DEFINE_COMPLEX. Ugh. */
# undef FFTW_DEFINE_COMPLEX
# define FFTW_DEFINE_COMPLEX(R, C) typedef _Complex float __attribute__((mode(TC))) C
# endif
FFTW_DEFINE_API(FFTW_MANGLE_QUAD, __float128, fftwq_complex)
#endif
#define FFTW_FORWARD (-1)
#define FFTW_BACKWARD (+1)
#define FFTW_NO_TIMELIMIT (-1.0)
/* documented flags */
#define FFTW_MEASURE (0U)
#define FFTW_DESTROY_INPUT (1U << 0)
#define FFTW_UNALIGNED (1U << 1)
#define FFTW_CONSERVE_MEMORY (1U << 2)
#define FFTW_EXHAUSTIVE (1U << 3) /* NO_EXHAUSTIVE is default */
#define FFTW_PRESERVE_INPUT (1U << 4) /* cancels FFTW_DESTROY_INPUT */
#define FFTW_PATIENT (1U << 5) /* IMPATIENT is default */
#define FFTW_ESTIMATE (1U << 6)
#define FFTW_WISDOM_ONLY (1U << 21)
/* undocumented beyond-guru flags */
#define FFTW_ESTIMATE_PATIENT (1U << 7)
#define FFTW_BELIEVE_PCOST (1U << 8)
#define FFTW_NO_DFT_R2HC (1U << 9)
#define FFTW_NO_NONTHREADED (1U << 10)
#define FFTW_NO_BUFFERING (1U << 11)
#define FFTW_NO_INDIRECT_OP (1U << 12)
#define FFTW_ALLOW_LARGE_GENERIC (1U << 13) /* NO_LARGE_GENERIC is default */
#define FFTW_NO_RANK_SPLITS (1U << 14)
#define FFTW_NO_VRANK_SPLITS (1U << 15)
#define FFTW_NO_VRECURSE (1U << 16)
#define FFTW_NO_SIMD (1U << 17)
#define FFTW_NO_SLOW (1U << 18)
#define FFTW_NO_FIXED_RADIX_LARGE_N (1U << 19)
#define FFTW_ALLOW_PRUNING (1U << 20)
#ifdef __cplusplus
} /* extern "C" */
#endif /* __cplusplus */
#endif /* FFTW3_H */

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6
src/CubicSDRDefs.h Normal file
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@ -0,0 +1,6 @@
#pragma once
#define BUF_SIZE (16 * 32 * 512)
#define SRATE 2500000
#define FFT_SIZE BUF_SIZE/2

2
src/IQBufferThread.cpp
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@ -11,7 +11,7 @@
#error "OpenGL required: set wxUSE_GLCANVAS to 1 and rebuild the library"
#endif
#define BUF_SIZE (16 * 32 * 512)
#include "CubicSDRDefs.h"
IQBufferThread::IQBufferThread(wxApp *app) :
wxThread(wxTHREAD_DETACHED) {

70
src/PrimaryGLContext.cpp
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@ -11,6 +11,8 @@
#endif
#include "CubicSDR.h"
#include "CubicSDRDefs.h"
#include <algorithm>
wxString glGetwxString(GLenum name) {
const GLubyte *v = glGetString(name);
@ -68,7 +70,7 @@ void PrimaryGLContext::PlotIQ(std::vector<float> &i_points, std::vector<float> &
glPushMatrix();
glTranslatef(0.0f, 0.5f, 0.0f);
if (q_points.size()) {
glScalef(10.0f, 1.0f, 1.0f);
// glScalef(10.0f, 1.0f, 1.0f);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, &q_points[0]);
glDrawArrays(GL_LINE_STRIP, 0, q_points.size() / 2);
@ -85,7 +87,7 @@ void PrimaryGLContext::PlotIQ(std::vector<float> &i_points, std::vector<float> &
glPushMatrix();
glTranslatef(0.0f, -0.5f, 0.0f);
if (i_points.size()) {
glScalef(10.0f, 1.0f, 1.0f);
// glScalef(10.0f, 1.0f, 1.0f);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, &i_points[0]);
glDrawArrays(GL_LINE_STRIP, 0, i_points.size() / 2);
@ -113,6 +115,13 @@ TestGLCanvas::TestGLCanvas(wxWindow *parent, int *attribList) :
wxGLCanvas(parent, wxID_ANY, attribList, wxDefaultPosition, wxDefaultSize,
wxFULL_REPAINT_ON_RESIZE) {
int in_block_size = BUF_SIZE/2;
int out_block_size = FFT_SIZE;
in = (fftw_complex*) fftw_malloc(sizeof(fftw_complex) * in_block_size);
out = (fftw_complex*) fftw_malloc(sizeof(fftw_complex) * out_block_size);
plan = fftw_plan_dft_1d(out_block_size, in, out, FFTW_FORWARD, FFTW_ESTIMATE);
}
void TestGLCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
@ -148,23 +157,60 @@ void TestGLCanvas::OnKeyDown(wxKeyEvent& event) {
}
void TestGLCanvas::setData(std::vector<signed char> *data) {
if (data && data->size()) {
if (i_points.size() < data->size()) {
i_points.resize(data->size());
}
if (q_points.size() < data->size()) {
q_points.resize(data->size());
if (i_points.size() < FFT_SIZE*2) {
i_points.resize(FFT_SIZE*2);
}
for (int i = 0, iMax = data->size() / 2; i < iMax; i++) {
i_points[i * 2 + 1] = (float) (*data)[i * 2] / 127.0f;
q_points[i * 2 + 1] = (float) (*data)[i * 2 + 1] / 127.0f;
i_points[i * 2] = q_points[i * 2] = 2.0f * ((float) i / (float) iMax) - 1.0f;
for (int i = 0; i < BUF_SIZE / 2; i++) {
in[i][0] = (float) (*data)[i * 2] / 127.0f;
in[i][1] = (float) (*data)[i * 2 + 1] / 127.0f;
}
// for (int i = 0; i < BUF_SIZE / 2; i++) {
// double ang = (M_PI / (float) BUF_SIZE) * (float) i;
// double w = 0.5 * (1.0 - cos(ang));
//
// in[i][0] *= w;
// in[i][1] *= w;
// }
fftw_execute(plan);
float result[FFT_SIZE];
float fft_floor, fft_ceil;
for (int i = 0, iMax = FFT_SIZE; i < iMax; i++) {
double a = out[i][0];
double b = out[i][1];
double c = sqrt(a*a+b*b);
if (i==1) {
fft_floor=fft_ceil=c;
} else {
if (c<fft_floor) {
fft_floor = c;
}
if (c>fft_ceil) {
fft_ceil = c;
}
}
result[i] = c;
}
for (int i = 0, iMax = FFT_SIZE; i < iMax; i++) {
i_points[i * 2 + 1] = (result[i]-fft_floor)/(fft_ceil-fft_floor);
i_points[i * 2] = 2.0f * ((float) i / (float) iMax) - 1.0f;
}
}
}
void TestGLCanvas::OnIdle(wxIdleEvent &event) {
Refresh(false);
}
;

5
src/PrimaryGLContext.h
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@ -4,6 +4,8 @@
#include "wx/timer.h"
#include <vector>
#include "CubicSDRDefs.h"
#include "fftw3.h"
class PrimaryGLContext : public wxGLContext
{
@ -27,6 +29,9 @@ public:
std::vector<float> i_points;
std::vector<float> q_points;
fftw_complex *in, *out;
fftw_plan plan;
private:
void OnPaint(wxPaintEvent& event);
void OnKeyDown(wxKeyEvent& event);

27
src/SDRThread.cpp
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@ -1,7 +1,7 @@
#include "SDRThread.h"
#include "CubicSDRDefs.h"
#include <vector>
#define BUF_SIZE (16 * 32 * 512)
//wxDEFINE_EVENT(wxEVT_COMMAND_SDRThread_INPUT, wxThreadEvent);
@ -87,14 +87,19 @@ wxThread::ExitCode SDRThread::Entry() {
enumerate_rtl();
rtlsdr_open(&dev, 0);
rtlsdr_set_sample_rate(dev, 2500000);
rtlsdr_set_center_freq(dev, 105700000);
rtlsdr_open(&dev, 3);
rtlsdr_set_sample_rate(dev, SRATE);
rtlsdr_set_center_freq(dev, 105700000-(SRATE/2));
rtlsdr_set_agc_mode(dev, 1);
rtlsdr_set_offset_tuning(dev, 1);
rtlsdr_reset_buffer(dev);
sample_rate = rtlsdr_get_sample_rate(dev);
std::cout << "Sample Rate is: " << sample_rate << std::endl;
int n_read;
double seconds = 0.0;
std::cout << "Sampling..";
while (!TestDestroy()) {
@ -107,9 +112,17 @@ wxThread::ExitCode SDRThread::Entry() {
new_buffer->push_back(buf[i] - 127);
}
wxThreadEvent event(wxEVT_THREAD, EVENT_SDR_INPUT);
event.SetPayload(new_buffer);
wxQueueEvent(frame, event.Clone());
double time_slice = (double)n_read/(double)sample_rate;
seconds += time_slice;
std::cout << "Time Slice: " << time_slice << std::endl;
if (!TestDestroy()) {
wxThreadEvent event(wxEVT_THREAD, EVENT_SDR_INPUT);
event.SetPayload(new_buffer);
wxQueueEvent(frame, event.Clone());
} else {
delete new_buffer;
}
}
this->Sleep(1);
}

1
src/SDRThread.h
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@ -32,4 +32,5 @@ public:
protected:
virtual ExitCode Entry();
AppFrame *frame;
uint32_t sample_rate;
};