Merged gcell-wip -r8159:8202 into trunk. This includes the following

[debian/gnuradio] / gcell / src / lib / wrapper / gcp_fft_1d_r2.h

diff --git a/gcell/src/lib/wrapper/gcp_fft_1d_r2.h b/gcell/src/lib/wrapper/gcp_fft_1d_r2.h
new file mode 100644 (file)
index 0000000..be1440f
--- /dev/null
+++ b/gcell/src/lib/wrapper/gcp_fft_1d_r2.h
@@ -0,0 +1,66 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2008 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 this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#ifndef INCLUDED_GCP_FFT_1D_R2_H
+#define INCLUDED_GCP_FFT_1D_R2_H
+
+#include <gc_job_manager.h>
+#include <complex>
+
+/*!
+ * \brief Submit a job that computes the forward or reverse FFT.
+ *
+ * \param mgr is the job manager instance
+ * \param log2_fft_length is the log2 of the fft_length (4 <= x <= 13).
+ * \param forward is true to compute the forward xform
+ * \param out is the fft_length output from FFT (must be 16-byte aligned).
+ * \param in is the fft_length input to FFT (must be 16-byte aligned).
+ * \param W is fft_length/4 twiddle factor input to FFT (must be 16-byte aligned).
+ *
+ * Returns a job descriptor which should be passed to wait_job*.
+ * Throws an exception in the event of a problem.
+ */
+gc_job_desc *
+gcp_fft_1d_r2_submit(gc_job_manager_sptr mgr,
+                    unsigned int log2_fft_length,
+                    bool forward,
+                    std::complex<float> *out,
+                    const std::complex<float> *in,
+                    const std::complex<float> *W);
+
+/*!
+ * \brief Compute twiddle factors for forward transform.
+ *
+ * \param log2_fft_length is the log2 of the fft_length.
+ * \param W is fft_length/4 twiddle factor output (must be 16-byte aligned).
+ */
+void
+gcp_fft_1d_r2_forward_twiddle(unsigned int log2_fft_length, std::complex<float> *W);
+
+/*!
+ * \brief Compute twiddle factors for reverse transform.
+ *
+ * \param log2_fft_length is the log2 of the fft_length.
+ * \param W is fft_length/4 twiddle factor output (must be 16-byte aligned).
+ */
+void
+gcp_fft_1d_r2_reverse_twiddle(unsigned int log2_fft_length, std::complex<float> *W);
+
+#endif /* INCLUDED_GCP_FFT_1D_R2_H */