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[Commit-gnuradio] r7730 - in gnuradio/trunk: gnuradio-core/src/lib/io gn
|
From: |
jcorgan |
|
Subject: |
[Commit-gnuradio] r7730 - in gnuradio/trunk: gnuradio-core/src/lib/io gnuradio-core/src/python/gnuradio/gr gnuradio-examples/python/audio |
|
Date: |
Sun, 17 Feb 2008 23:27:50 -0700 (MST) |
Author: jcorgan
Date: 2008-02-17 23:27:50 -0700 (Sun, 17 Feb 2008)
New Revision: 7730
Added:
gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_sink.cc
gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_sink.h
gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_sink.i
gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_source.cc
gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_source.h
gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_source.i
gnuradio/trunk/gnuradio-core/src/lib/io/gri_wavfile.cc
gnuradio/trunk/gnuradio-core/src/lib/io/gri_wavfile.h
gnuradio/trunk/gnuradio-core/src/python/gnuradio/gr/qa_wavefile.py
gnuradio/trunk/gnuradio-core/src/python/gnuradio/gr/test_16bit_1chunk.wav
gnuradio/trunk/gnuradio-examples/python/audio/dial_tone_wav.py
Modified:
gnuradio/trunk/gnuradio-core/src/lib/io/Makefile.am
gnuradio/trunk/gnuradio-core/src/lib/io/io.i
gnuradio/trunk/gnuradio-core/src/python/gnuradio/gr/Makefile.am
gnuradio/trunk/gnuradio-examples/python/audio/Makefile.am
Log:
Merged -r7723:7729 from jcorgan/wav into trunk, with added example program.
Adds Martin Braun's gr.wavfile_source and gr.wavfile_sink blocks.
Modified: gnuradio/trunk/gnuradio-core/src/lib/io/Makefile.am
===================================================================
--- gnuradio/trunk/gnuradio-core/src/lib/io/Makefile.am 2008-02-18 06:02:59 UTC
(rev 7729)
+++ gnuradio/trunk/gnuradio-core/src/lib/io/Makefile.am 2008-02-18 06:27:50 UTC
(rev 7730)
@@ -53,7 +53,10 @@
ppio_ppdev.cc \
sdr_1000.cc \
gr_udp_sink.cc \
- gr_udp_source.cc
+ gr_udp_source.cc \
+ gr_wavfile_sink.cc \
+ gr_wavfile_source.cc \
+ gri_wavfile.cc
grinclude_HEADERS = \
gr_file_sink.h \
@@ -83,9 +86,14 @@
ppio_ppdev.h \
sdr_1000.h \
gr_udp_sink.h \
- gr_udp_source.h
+ gr_udp_source.h \
+ gr_wavfile_source.h \
+ gr_wavfile_sink.h \
+ gri_wavfile.h
+
+
swiginclude_HEADERS = \
io.i \
gr_file_sink.i \
@@ -102,4 +110,7 @@
ppio.i \
sdr_1000.i \
gr_udp_sink.i \
- gr_udp_source.i
+ gr_udp_source.i \
+ gr_wavfile_source.i \
+ gr_wavfile_sink.i
+
Copied: gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_sink.cc (from rev
7729,
gnuradio/branches/developers/jcorgan/wav/gnuradio-core/src/lib/io/gr_wavfile_sink.cc)
===================================================================
--- gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_sink.cc
(rev 0)
+++ gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_sink.cc 2008-02-18
06:27:50 UTC (rev 7730)
@@ -0,0 +1,278 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2006,2007,2008 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 GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gr_wavfile_sink.h>
+#include <gr_io_signature.h>
+#include <gri_wavfile.h>
+#include <stdexcept>
+#include <climits>
+#include <cstring>
+#include <cmath>
+#include <fcntl.h>
+
+// win32 (mingw/msvc) specific
+#ifdef HAVE_IO_H
+#include <io.h>
+#endif
+#ifdef O_BINARY
+#define OUR_O_BINARY O_BINARY
+#else
+#define OUR_O_BINARY 0
+#endif
+
+// should be handled via configure
+#ifdef O_LARGEFILE
+#define OUR_O_LARGEFILE O_LARGEFILE
+#else
+#define OUR_O_LARGEFILE 0
+#endif
+
+
+gr_wavfile_sink_sptr
+gr_make_wavfile_sink(const char *filename,
+ int n_channels,
+ unsigned int sample_rate,
+ int bits_per_sample)
+{
+ return gr_wavfile_sink_sptr (new gr_wavfile_sink (filename,
+ n_channels,
+ sample_rate,
+ bits_per_sample));
+}
+
+gr_wavfile_sink::gr_wavfile_sink(const char *filename,
+ int n_channels,
+ unsigned int sample_rate,
+ int bits_per_sample)
+ : gr_sync_block ("wavfile_sink",
+ gr_make_io_signature(1, n_channels, sizeof(float)),
+ gr_make_io_signature(0, 0, 0)),
+ d_sample_rate(sample_rate), d_nchans(n_channels),
+ d_fp(0), d_new_fp(0), d_updated(false)
+{
+ if (bits_per_sample != 8 && bits_per_sample != 16) {
+ throw std::runtime_error("Invalid bits per sample (supports 8 and 16)");
+ }
+ d_bytes_per_sample = bits_per_sample / 8;
+ d_bytes_per_sample_new = d_bytes_per_sample;
+
+ if (!open(filename)) {
+ throw std::runtime_error ("can't open file");
+ }
+
+ if (bits_per_sample == 8) {
+ d_max_sample_val = 0xFF;
+ d_min_sample_val = 0;
+ d_normalize_fac = d_max_sample_val/2;
+ d_normalize_shift = 1;
+ } else {
+ d_max_sample_val = 0x7FFF;
+ d_min_sample_val = -0x7FFF;
+ d_normalize_fac = d_max_sample_val;
+ d_normalize_shift = 0;
+ if (bits_per_sample != 16) {
+ fprintf(stderr, "Invalid bits per sample value requested, using 16");
+ }
+ }
+}
+
+
+bool
+gr_wavfile_sink::open(const char* filename)
+{
+ omni_mutex_lock l(d_mutex);
+
+ // we use the open system call to get access to the O_LARGEFILE flag.
+ int fd;
+ if ((fd = ::open (filename,
+ O_WRONLY|O_CREAT|O_TRUNC|OUR_O_LARGEFILE|OUR_O_BINARY,
+ 0664)) < 0){
+ perror (filename);
+ return false;
+ }
+
+ if (d_new_fp) { // if we've already got a new one open, close it
+ fclose(d_new_fp);
+ d_new_fp = 0;
+ }
+
+ if ((d_new_fp = fdopen (fd, "wb")) == NULL) {
+ perror (filename);
+ ::close(fd); // don't leak file descriptor if fdopen fails.
+ return false;
+ }
+ d_updated = true;
+
+ if (!gri_wavheader_write(d_new_fp,
+ d_sample_rate,
+ d_nchans,
+ d_bytes_per_sample_new)) {
+ fprintf(stderr, "[%s] could not write to WAV file\n", __FILE__);
+ exit(-1);
+ }
+
+ return true;
+}
+
+
+void
+gr_wavfile_sink::close()
+{
+ omni_mutex_lock l(d_mutex);
+
+ if (!d_fp)
+ return;
+
+ close_wav();
+}
+
+void gr_wavfile_sink::close_wav()
+{
+ unsigned int byte_count = d_sample_count * d_bytes_per_sample;
+
+ gri_wavheader_complete(d_fp, byte_count);
+
+ fclose(d_fp);
+ d_fp = NULL;
+}
+
+
+gr_wavfile_sink::~gr_wavfile_sink ()
+{
+ if (d_new_fp) {
+ fclose(d_new_fp);
+ }
+
+ close();
+}
+
+
+int
+gr_wavfile_sink::work (int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items)
+{
+ float **in = (float **) &input_items[0];
+ int n_in_chans = input_items.size();
+
+ short int sample_buf_s;
+
+ int nwritten;
+
+ do_update(); // update: d_fp is reqd
+ if (!d_fp) // drop output on the floor
+ return noutput_items;
+
+ for (nwritten = 0; nwritten < noutput_items; nwritten++) {
+ for (int chan = 0; chan < d_nchans; chan++) {
+ // Write zeros to channels which are in the WAV file
+ // but don't have any inputs here
+ if (chan < n_in_chans) {
+ sample_buf_s =
+ convert_to_short(in[chan][nwritten]);
+ } else {
+ sample_buf_s = 0;
+ }
+
+ gri_wav_write_sample(d_fp, sample_buf_s, d_bytes_per_sample);
+
+ if (feof(d_fp) || ferror(d_fp)) {
+ fprintf(stderr, "[%s] file i/o error\n", __FILE__);
+ close();
+ exit(-1);
+ }
+ d_sample_count++;
+ }
+ }
+
+ return nwritten;
+}
+
+
+short int
+gr_wavfile_sink::convert_to_short(float sample)
+{
+ sample += d_normalize_shift;
+ sample *= d_normalize_fac;
+ if (sample > d_max_sample_val) {
+ sample = d_max_sample_val;
+ } else if (sample < d_min_sample_val) {
+ sample = d_min_sample_val;
+ }
+
+ return (short int) roundf(sample);
+}
+
+
+void
+gr_wavfile_sink::set_bits_per_sample(int bits_per_sample)
+{
+ omni_mutex_lock l(d_mutex);
+ if (bits_per_sample == 8 || bits_per_sample == 16) {
+ d_bytes_per_sample_new = bits_per_sample / 8;
+ }
+}
+
+
+void
+gr_wavfile_sink::set_sample_rate(unsigned int sample_rate)
+{
+ omni_mutex_lock l(d_mutex);
+ d_sample_rate = sample_rate;
+}
+
+
+void
+gr_wavfile_sink::do_update()
+{
+ if (!d_updated) {
+ return;
+ }
+
+ omni_mutex_lock l(d_mutex); // hold mutex for duration of this block
+ if (d_fp) {
+ close_wav();
+ }
+
+ d_fp = d_new_fp; // install new file pointer
+ d_new_fp = 0;
+ d_sample_count = 0;
+ d_bytes_per_sample = d_bytes_per_sample_new;
+
+ if (d_bytes_per_sample == 1) {
+ d_max_sample_val = UCHAR_MAX;
+ d_min_sample_val = 0;
+ d_normalize_fac = d_max_sample_val/2;
+ d_normalize_shift = 1;
+ } else if (d_bytes_per_sample == 2) {
+ d_max_sample_val = SHRT_MAX;
+ d_min_sample_val = SHRT_MIN;
+ d_normalize_fac = d_max_sample_val;
+ d_normalize_shift = 0;
+ }
+
+ d_updated = false;
+}
Copied: gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_sink.h (from rev
7729,
gnuradio/branches/developers/jcorgan/wav/gnuradio-core/src/lib/io/gr_wavfile_sink.h)
===================================================================
--- gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_sink.h
(rev 0)
+++ gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_sink.h 2008-02-18
06:27:50 UTC (rev 7730)
@@ -0,0 +1,137 @@
+/* -*- 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 GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef INCLUDED_GR_WAVFILE_SINK_H
+#define INCLUDED_GR_WAVFILE_SINK_H
+
+#include <gr_sync_block.h>
+#include <gr_file_sink_base.h>
+#include <omnithread.h>
+
+class gr_wavfile_sink;
+typedef boost::shared_ptr<gr_wavfile_sink> gr_wavfile_sink_sptr;
+
+/*
+ * \p filename The .wav file to be opened
+ * \p n_channels Number of channels (2 = stereo or I/Q output)
+ * \p sample_rate Sample rate [S/s]
+ * \p bits_per_sample 16 or 8 bit, default is 16
+ */
+gr_wavfile_sink_sptr
+gr_make_wavfile_sink (const char *filename,
+ int n_channels,
+ unsigned int sample_rate,
+ int bits_per_sample = 16);
+
+/*!
+ * \brief Read stream from a Microsoft PCM (.wav) file, output floats
+ *
+ * Values are within [-1;1].
+ * Check gr_make_wavfile_source() for extra info.
+ *
+ * \ingroup sink
+ */
+class gr_wavfile_sink : public gr_sync_block
+{
+private:
+ friend gr_wavfile_sink_sptr gr_make_wavfile_sink (const char *filename,
+ int n_channels,
+ unsigned int sample_rate,
+ int bits_per_sample);
+
+ gr_wavfile_sink(const char *filename,
+ int n_channels,
+ unsigned int sample_rate,
+ int bits_per_sample);
+
+ unsigned d_sample_rate;
+ int d_nchans;
+ unsigned d_sample_count;
+ int d_bytes_per_sample;
+ int d_bytes_per_sample_new;
+ int d_max_sample_val;
+ int d_min_sample_val;
+ int d_normalize_shift;
+ int d_normalize_fac;
+
+ FILE *d_fp;
+ FILE *d_new_fp;
+ bool d_updated;
+ omni_mutex d_mutex;
+
+ /*!
+ * \brief Convert a sample value within [-1;+1] to a corresponding
+ * short integer value
+ */
+ short convert_to_short(float sample);
+
+ /*!
+ * \brief Writes information to the WAV header which is not available
+ * a-priori (chunk size etc.) and closes the file. Not thread-safe and
+ * assumes d_fp is a valid file pointer, should thus only be called by
+ * other methods.
+ */
+ void close_wav();
+
+public:
+ ~gr_wavfile_sink ();
+
+ /*!
+ * \brief Opens a new file and writes a WAV header. Thread-safe.
+ */
+ bool open(const char* filename);
+
+ /*!
+ * \brief Closes the currently active file and completes the WAV
+ * header. Thread-safe.
+ */
+ void close();
+
+ /*!
+ * \brief If any file changes have occurred, update now. This is called
+ * internally by work() and thus doesn't usually need to be called by
+ * hand.
+ */
+ void do_update();
+
+ /*!
+ * \brief Set the sample rate. This will not affect the WAV file
+ * currently opened. Any following open() calls will use this new
+ * sample rate.
+ */
+ void set_sample_rate(unsigned int sample_rate);
+
+ /*!
+ * \brief Set bits per sample. This will not affect the WAV file
+ * currently opened (see set_sample_rate()). If the value is neither
+ * 8 nor 16, the call is ignored and the current value is kept.
+ */
+ void set_bits_per_sample(int bits_per_sample);
+
+
+ int work(int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items);
+
+};
+
+#endif /* INCLUDED_GR_WAVFILE_SINK_H */
Copied: gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_sink.i (from rev
7729,
gnuradio/branches/developers/jcorgan/wav/gnuradio-core/src/lib/io/gr_wavfile_sink.i)
===================================================================
--- gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_sink.i
(rev 0)
+++ gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_sink.i 2008-02-18
06:27:50 UTC (rev 7730)
@@ -0,0 +1,47 @@
+/* -*- 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 GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+
+GR_SWIG_BLOCK_MAGIC(gr,wavfile_sink);
+
+gr_wavfile_sink_sptr
+gr_make_wavfile_sink (const char *filename,
+ int n_channels,
+ unsigned int sample_rate,
+ int bits_per_sample = 16) throw (std::runtime_error);
+
+class gr_wavfile_sink : public gr_sync_block
+{
+protected:
+ gr_wavfile_sink(const char *filename,
+ int n_channels,
+ unsigned int sample_rate,
+ int bits_per_sample) throw (std::runtime_error);
+
+public:
+ ~gr_wavfile_sink ();
+ bool open(const char* filename);
+ void close();
+ void set_sample_rate(unsigned int sample_rate);
+ void set_bits_per_sample(int bits_per_sample);
+};
+
Copied: gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_source.cc (from rev
7729,
gnuradio/branches/developers/jcorgan/wav/gnuradio-core/src/lib/io/gr_wavfile_source.cc)
===================================================================
--- gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_source.cc
(rev 0)
+++ gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_source.cc
2008-02-18 06:27:50 UTC (rev 7730)
@@ -0,0 +1,172 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2008 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 GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gr_wavfile_source.h>
+#include <gr_io_signature.h>
+#include <gri_wavfile.h>
+#include <cstdio>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <stdexcept>
+
+// win32 (mingw/msvc) specific
+#ifdef HAVE_IO_H
+#include <io.h>
+#endif
+#ifdef O_BINARY
+#define OUR_O_BINARY O_BINARY
+#else
+#define OUR_O_BINARY 0
+#endif
+// should be handled via configure
+#ifdef O_LARGEFILE
+#define OUR_O_LARGEFILE O_LARGEFILE
+#else
+#define OUR_O_LARGEFILE 0
+#endif
+
+
+gr_wavfile_source_sptr
+gr_make_wavfile_source (const char *filename, bool repeat)
+{
+ return gr_wavfile_source_sptr (new gr_wavfile_source (filename, repeat));
+}
+
+
+gr_wavfile_source::gr_wavfile_source (const char *filename, bool repeat)
+ : gr_sync_block ("wavfile_source",
+ gr_make_io_signature (0, 0, 0),
+ gr_make_io_signature (1, 2, sizeof(float))),
+ d_fp(NULL), d_repeat(repeat),
+ d_sample_rate(1), d_nchans(1), d_bytes_per_sample(2),
d_first_sample_pos(0),
+ d_samples_per_chan(0), d_sample_idx(0)
+{
+ // we use "open" to use to the O_LARGEFILE flag
+
+ int fd;
+ if ((fd = open (filename, O_RDONLY | OUR_O_LARGEFILE | OUR_O_BINARY)) < 0) {
+ perror (filename);
+ throw std::runtime_error ("can't open file");
+ }
+
+ if ((d_fp = fdopen (fd, "rb")) == NULL) {
+ perror (filename);
+ throw std::runtime_error ("can't open file");
+ }
+
+ // Scan headers, check file validity
+ if (!gri_wavheader_parse(d_fp,
+ d_sample_rate,
+ d_nchans,
+ d_bytes_per_sample,
+ d_first_sample_pos,
+ d_samples_per_chan)) {
+ throw std::runtime_error("is not a valid wav file");
+ }
+
+ if (d_samples_per_chan == 0) {
+ throw std::runtime_error("WAV file does not contain any samples");
+ }
+
+ if (d_bytes_per_sample == 1) {
+ d_normalize_fac = 128;
+ d_normalize_shift = 1;
+ } else {
+ d_normalize_fac = 0x7FFF;
+ d_normalize_shift = 0;
+ }
+
+ // Re-set the output signature
+ set_output_signature(gr_make_io_signature(1, d_nchans, sizeof(float)));
+}
+
+
+gr_wavfile_source::~gr_wavfile_source ()
+{
+ fclose(d_fp);
+}
+
+
+int
+gr_wavfile_source::work(int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items)
+{
+ float **out = (float **) &output_items[0];
+ int n_out_chans = output_items.size();
+
+ int i;
+ short sample;
+
+ for (i = 0; i < noutput_items; i++) {
+ if (d_sample_idx >= d_samples_per_chan) {
+ if (!d_repeat) {
+ // if nothing was read at all, say we're done.
+ return i ? i : -1;
+ }
+
+ if (fseek (d_fp, d_first_sample_pos, SEEK_SET) == -1) {
+ fprintf(stderr, "[%s] fseek failed\n", __FILE__);
+ exit(-1);
+ }
+
+ d_sample_idx = 0;
+ }
+
+ for (int chan = 0; chan < d_nchans; chan++) {
+ sample = gri_wav_read_sample(d_fp, d_bytes_per_sample);
+
+ if (chan < n_out_chans) {
+ out[chan][i] = convert_to_float(sample);
+ }
+ }
+
+ d_sample_idx++;
+
+ // OK, EOF is not necessarily an error. But we're not going to
+ // deal with handling corrupt wav files, so if they give us any
+ // trouble they won't be processed. Serves them bloody right.
+ if (feof(d_fp) || ferror(d_fp)) {
+ if (i == 0) {
+ fprintf(stderr, "[%s] WAV file has corrupted header or i/o error\n",
__FILE__);
+ return -1;
+ }
+ return i;
+ }
+ }
+
+ return noutput_items;
+}
+
+
+float
+gr_wavfile_source::convert_to_float(short int sample)
+{
+ float sample_out = (float) sample;
+ sample_out /= d_normalize_fac;
+ sample_out -= d_normalize_shift;
+ return sample_out;
+}
Copied: gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_source.h (from rev
7729,
gnuradio/branches/developers/jcorgan/wav/gnuradio-core/src/lib/io/gr_wavfile_source.h)
===================================================================
--- gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_source.h
(rev 0)
+++ gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_source.h 2008-02-18
06:27:50 UTC (rev 7730)
@@ -0,0 +1,93 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2008 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 GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef INCLUDED_GR_WAVFILE_SOURCE_H
+#define INCLUDED_GR_WAVFILE_SOURCE_H
+
+#include <gr_sync_block.h>
+
+class gr_wavfile_source;
+typedef boost::shared_ptr<gr_wavfile_source> gr_wavfile_source_sptr;
+
+gr_wavfile_source_sptr
+gr_make_wavfile_source (const char *filename, bool repeat = false);
+
+/*!
+ * \brief Read stream from a Microsoft PCM (.wav) file, output floats
+ *
+ * Unless otherwise called, values are within [-1;1].
+ * Check gr_make_wavfile_source() for extra info.
+ *
+ * \ingroup source
+ */
+
+class gr_wavfile_source : public gr_sync_block
+{
+private:
+ friend gr_wavfile_source_sptr gr_make_wavfile_source (const char *filename,
+ bool repeat);
+ gr_wavfile_source(const char *filename, bool repeat);
+
+ FILE *d_fp;
+ bool d_repeat;
+
+ unsigned d_sample_rate;
+ int d_nchans;
+ int d_bytes_per_sample;
+ int d_first_sample_pos;
+ unsigned d_samples_per_chan;
+ unsigned d_sample_idx;
+ int d_normalize_shift;
+ int d_normalize_fac;
+
+ /*!
+ * \brief Convert an integer sample value to a float value within [-1;1]
+ */
+ float convert_to_float(short int sample);
+
+public:
+ ~gr_wavfile_source ();
+
+ int work(int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items);
+
+ /*!
+ * \brief Read the sample rate as specified in the wav file header
+ */
+ unsigned int sample_rate() const { return d_sample_rate; };
+
+ /*!
+ * \brief Return the number of bits per sample as specified in the wav
+ * file header. Only 8 or 16 bit are supported here.
+ */
+ int bits_per_sample() const { return d_bytes_per_sample * 8; };
+
+ /*!
+ * \brief Return the number of channels in the wav file as specified in
+ * the wav file header. This is also the max number of outputs you can
+ * have.
+ */
+ int channels() const { return d_nchans; };
+};
+
+#endif /* INCLUDED_GR_WAVFILE_SOURCE_H */
Copied: gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_source.i (from rev
7729,
gnuradio/branches/developers/jcorgan/wav/gnuradio-core/src/lib/io/gr_wavfile_source.i)
===================================================================
--- gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_source.i
(rev 0)
+++ gnuradio/trunk/gnuradio-core/src/lib/io/gr_wavfile_source.i 2008-02-18
06:27:50 UTC (rev 7730)
@@ -0,0 +1,42 @@
+/* -*- 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 GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+GR_SWIG_BLOCK_MAGIC(gr,wavfile_source);
+
+gr_wavfile_source_sptr
+gr_make_wavfile_source (const char *filename,
+ bool repeat = false) throw (std::runtime_error);
+
+class gr_wavfile_source : public gr_sync_block
+{
+private:
+ gr_wavfile_source(const char *filename,
+ bool repeat) throw (std::runtime_error);
+
+public:
+ ~gr_wavfile_source();
+
+ unsigned int sample_rate();
+ int bits_per_sample();
+ int channels();
+};
+
Copied: gnuradio/trunk/gnuradio-core/src/lib/io/gri_wavfile.cc (from rev 7729,
gnuradio/branches/developers/jcorgan/wav/gnuradio-core/src/lib/io/gri_wavfile.cc)
===================================================================
--- gnuradio/trunk/gnuradio-core/src/lib/io/gri_wavfile.cc
(rev 0)
+++ gnuradio/trunk/gnuradio-core/src/lib/io/gri_wavfile.cc 2008-02-18
06:27:50 UTC (rev 7730)
@@ -0,0 +1,312 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2008 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 GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gri_wavfile.h>
+#include <cstring>
+#include <stdint.h>
+
+# define VALID_COMPRESSION_TYPE 0x0001
+
+// WAV files are always little-endian, so we need some byte switching macros
+
+// FIXME: These need to be refactored into a separate endianess header file
+// as they duplicate routines defined in usrp/host/lib/legacy/usrp_bytesex.h
+
+#ifdef WORDS_BIGENDIAN
+
+#ifdef HAVE_BYTESWAP_H
+#include <byteswap.h>
+#else
+#warning Using non-portable code (likely wrong other than ILP32).
+
+static inline short int
+bswap_16 (unsigned short int x)
+{
+ return ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8));
+}
+
+static inline unsigned int
+bswap_32 (unsigned int x)
+{
+ return ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) \
+ | (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24));
+}
+#endif // HAVE_BYTESWAP_H
+
+static inline uint32_t
+host_to_wav(uint32_t x)
+{
+ return bswap_32(x);
+}
+
+static inline uint16_t
+host_to_wav(uint16_t x)
+{
+ return bswap_16(x);
+}
+
+static inline int16_t
+host_to_wav(int16_t x)
+{
+ return bswap_32(x);
+}
+
+static inline uint32_t
+wav_to_host(uint32_t x)
+{
+ return bswap_32(x);
+}
+
+static inline uint16_t
+wav_to_host(uint16_t x)
+{
+ return bswap_16(x);
+}
+
+static inline int16_t
+wav_to_host(int16_t x)
+{
+ return bswap_32(x);
+}
+
+#else
+
+static inline uint32_t
+host_to_wav(uint32_t x)
+{
+ return x;
+}
+
+static inline uint16_t
+host_to_wav(uint16_t x)
+{
+ return x;
+}
+
+static inline int16_t
+host_to_wav(int16_t x)
+{
+ return x;
+}
+
+static inline uint32_t
+wav_to_host(uint32_t x)
+{
+ return x;
+}
+
+static inline uint16_t
+wav_to_host(uint16_t x)
+{
+ return x;
+}
+
+static inline int16_t
+wav_to_host(int16_t x)
+{
+ return x;
+}
+
+#endif // WORDS_BIGENDIAN
+
+
+bool
+gri_wavheader_parse(FILE *fp,
+ unsigned int &sample_rate_o,
+ int &nchans_o,
+ int &bytes_per_sample_o,
+ int &first_sample_pos_o,
+ unsigned int &samples_per_chan_o)
+{
+ // _o variables take return values
+ char str_buf[8] = {0};
+
+ uint32_t file_size;
+ uint32_t fmt_hdr_skip;
+ uint16_t compression_type;
+ uint16_t nchans;
+ uint32_t sample_rate;
+ uint32_t avg_bytes_per_sec;
+ uint16_t block_align;
+ uint16_t bits_per_sample;
+ uint32_t chunk_size;
+
+ size_t fresult;
+
+ fresult = fread(str_buf, 1, 4, fp);
+ if (fresult != 4 || strncmp(str_buf, "RIFF", 4) || feof(fp)) {
+ return false;
+ }
+
+ fread(&file_size, 1, 4, fp);
+
+ fresult = fread(str_buf, 1, 8, fp);
+ if (fresult != 8 || strncmp(str_buf, "WAVEfmt ", 8) || feof(fp)) {
+ return false;
+ }
+
+ fread(&fmt_hdr_skip, 1, 4, fp);
+
+ fread(&compression_type, 1, 2, fp);
+ if (wav_to_host(compression_type) != VALID_COMPRESSION_TYPE) {
+ return false;
+ }
+
+ fread(&nchans, 1, 2, fp);
+ fread(&sample_rate, 1, 4, fp);
+ fread(&avg_bytes_per_sec, 1, 4, fp);
+ fread(&block_align, 1, 2, fp);
+ fread(&bits_per_sample, 1, 2, fp);
+
+ if (ferror(fp)) {
+ return false;
+ }
+
+ fmt_hdr_skip = wav_to_host(fmt_hdr_skip);
+ nchans = wav_to_host(nchans);
+ sample_rate = wav_to_host(sample_rate);
+ bits_per_sample = wav_to_host(bits_per_sample);
+
+ if (bits_per_sample != 8 && bits_per_sample != 16) {
+ return false;
+ }
+
+ fmt_hdr_skip -= 16;
+ if (fmt_hdr_skip) {
+ fseek(fp, fmt_hdr_skip, SEEK_CUR);
+ }
+
+ // data chunk
+ fresult = fread(str_buf, 1, 4, fp);
+ if (strncmp(str_buf, "data", 4)) {
+ return false;
+ }
+
+ fread(&chunk_size, 1, 4, fp);
+ if (ferror(fp)) {
+ return false;
+ }
+
+ // More byte swapping
+ chunk_size = wav_to_host(chunk_size);
+
+ // Output values
+ sample_rate_o = (unsigned) sample_rate;
+ nchans_o = (int) nchans;
+ bytes_per_sample_o = (int) (bits_per_sample / 8);
+ first_sample_pos_o = (int) ftell(fp);
+ samples_per_chan_o = (unsigned) (chunk_size / (bytes_per_sample_o * nchans));
+ return true;
+}
+
+
+short int
+gri_wav_read_sample(FILE *fp, int bytes_per_sample)
+{
+ int16_t buf = 0;
+ fread(&buf, bytes_per_sample, 1, fp);
+
+ return (short) wav_to_host(buf);
+}
+
+
+bool
+gri_wavheader_write(FILE *fp,
+ unsigned int sample_rate,
+ int nchans,
+ int bytes_per_sample)
+{
+ const int header_len = 44;
+ char wav_hdr[header_len] = "RIFF\0\0\0\0WAVEfmt
\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0data\0\0\0";
+ uint16_t nchans_f = (uint16_t) nchans;
+ uint32_t sample_rate_f = (uint32_t) sample_rate;
+ uint16_t block_align = bytes_per_sample * nchans;
+ uint32_t avg_bytes = sample_rate * block_align;
+ uint16_t bits_per_sample = bytes_per_sample * 8;
+
+ nchans_f = host_to_wav(nchans_f);
+ sample_rate_f = host_to_wav(sample_rate_f);
+ block_align = host_to_wav(block_align);
+ avg_bytes = host_to_wav(avg_bytes);
+ bits_per_sample = host_to_wav(bits_per_sample);
+
+ wav_hdr[16] = 0x10; // no extra bytes
+ wav_hdr[20] = 0x01; // no compression
+ memcpy((void *) (wav_hdr + 22), (void *) &nchans_f, 2);
+ memcpy((void *) (wav_hdr + 24), (void *) &sample_rate_f, 4);
+ memcpy((void *) (wav_hdr + 28), (void *) &avg_bytes, 4);
+ memcpy((void *) (wav_hdr + 32), (void *) &block_align, 2);
+ memcpy((void *) (wav_hdr + 34), (void *) &bits_per_sample, 2);
+
+ fwrite(&wav_hdr, 1, header_len, fp);
+ if (ferror(fp)) {
+ return false;
+ }
+
+ return true;
+}
+
+
+void
+gri_wav_write_sample(FILE *fp, short int sample, int bytes_per_sample)
+{
+ void *data_ptr;
+ unsigned char buf_8bit;
+ int16_t buf_16bit;
+
+ if (bytes_per_sample == 1) {
+ buf_8bit = (unsigned char) sample;
+ data_ptr = (void *) &buf_8bit;
+ } else {
+ buf_16bit = host_to_wav((int16_t) sample);
+ data_ptr = (void *) &buf_16bit;
+ }
+
+ fwrite(data_ptr, 1, bytes_per_sample, fp);
+}
+
+
+bool
+gri_wavheader_complete(FILE *fp, unsigned int byte_count)
+{
+ uint32_t chunk_size = (uint32_t) byte_count;
+ chunk_size = host_to_wav(chunk_size);
+
+ fseek(fp, 40, SEEK_SET);
+ fwrite(&chunk_size, 1, 4, fp);
+
+ chunk_size = (uint32_t) byte_count + 36; // fmt chunk and data header
+ chunk_size = host_to_wav(chunk_size);
+ fseek(fp, 4, SEEK_SET);
+
+ fwrite(&chunk_size, 1, 4, fp);
+
+ if (ferror(fp)) {
+ return false;
+ }
+
+ return true;
+}
Copied: gnuradio/trunk/gnuradio-core/src/lib/io/gri_wavfile.h (from rev 7729,
gnuradio/branches/developers/jcorgan/wav/gnuradio-core/src/lib/io/gri_wavfile.h)
===================================================================
--- gnuradio/trunk/gnuradio-core/src/lib/io/gri_wavfile.h
(rev 0)
+++ gnuradio/trunk/gnuradio-core/src/lib/io/gri_wavfile.h 2008-02-18
06:27:50 UTC (rev 7730)
@@ -0,0 +1,100 @@
+/* -*- 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 GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+// This file stores all the RIFF file type knowledge for the gr_wavfile_*
+// blocks.
+
+#include <cstdio>
+
+/*!
+ * \brief Read signal information from a given WAV file.
+ *
+ * \p fp File pointer to an opened, empty file.
+ * \p sample_rate Stores the sample rate [S/s]
+ * \p nchans Number of channels
+ * \p bytes_per_sample Bytes per sample, can either be 1 or 2 (corresponding to
+ * 8 or 16 bit samples, respectively)
+ * \p first_sample_pos Number of the first byte containing a sample. Use this
+ * with fseek() to jump from the end of the file to the first sample
+ * when in repeat mode.
+ * \p samples_per_chan Number of samples per channel
+ * \p normalize_fac The normalization factor with which you need to divide the
+ * integer values of the samples to get them within [-1;1]
+ * \p normalize_shift The value by which the sample values need to be shifted
+ * after normalization (reason being, 8-bit WAV files store samples as
+ * unsigned char and 16-bit as signed short int)
+ * \return True on a successful read, false if the file could not be read or is
+ * not a valid WAV file.
+ */
+bool
+gri_wavheader_parse(FILE *fp,
+ unsigned int &sample_rate,
+ int &nchans,
+ int &bytes_per_sample,
+ int &first_sample_pos,
+ unsigned int &samples_per_chan);
+
+
+/*!
+ * \brief Read one sample from an open WAV file at the current position.
+ *
+ * Takes care of endianness.
+ */
+short int
+gri_wav_read_sample(FILE *fp, int bytes_per_sample);
+
+
+/*!
+ * \brief Write a valid RIFF file header
+ *
+ * Note: Some header values are kept blank because they're usually not known
+ * a-priori (file and chunk lengths). Use gri_wavheader_complete() to fill
+ * these in.
+ */
+bool
+gri_wavheader_write(FILE *fp,
+ unsigned int sample_rate,
+ int nchans,
+ int bytes_per_sample);
+
+/*!
+ * \brief Write one sample to an open WAV file at the current position.
+ *
+ * Takes care of endianness.
+ */
+void
+gri_wav_write_sample(FILE *fp, short int sample, int bytes_per_sample);
+
+
+/*!
+ * \brief Complete a WAV header
+ *
+ * Note: The stream position is changed during this function. If anything
+ * needs to be written to the WAV file after calling this function (which
+ * shouldn't happen), you need to fseek() to the end of the file (or
+ * whereever).
+ *
+ * \p fp File pointer to an open WAV file with a blank header
+ * \p byte_count Length of all samples written to the file in bytes.
+ */
+bool
+gri_wavheader_complete(FILE *fp, unsigned int byte_count);
Modified: gnuradio/trunk/gnuradio-core/src/lib/io/io.i
===================================================================
--- gnuradio/trunk/gnuradio-core/src/lib/io/io.i 2008-02-18 06:02:59 UTC
(rev 7729)
+++ gnuradio/trunk/gnuradio-core/src/lib/io/io.i 2008-02-18 06:27:50 UTC
(rev 7730)
@@ -36,6 +36,8 @@
#include <gr_message_sink.h>
#include <gr_udp_sink.h>
#include <gr_udp_source.h>
+#include <gr_wavfile_sink.h>
+#include <gr_wavfile_source.h>
%}
@@ -54,4 +56,6 @@
%include "gr_message_sink.i"
%include "gr_udp_sink.i"
%include "gr_udp_source.i"
+%include "gr_wavfile_sink.i"
+%include "gr_wavfile_source.i"
Modified: gnuradio/trunk/gnuradio-core/src/python/gnuradio/gr/Makefile.am
===================================================================
--- gnuradio/trunk/gnuradio-core/src/python/gnuradio/gr/Makefile.am
2008-02-18 06:02:59 UTC (rev 7729)
+++ gnuradio/trunk/gnuradio-core/src/python/gnuradio/gr/Makefile.am
2008-02-18 06:27:50 UTC (rev 7730)
@@ -21,9 +21,10 @@
include $(top_srcdir)/Makefile.common
-EXTRA_DIST = run_tests.in
+EXTRA_DIST = \
+ run_tests.in \
+ test_16bit_1chunk.wav
-
TESTS = \
run_tests
Copied: gnuradio/trunk/gnuradio-core/src/python/gnuradio/gr/qa_wavefile.py
(from rev 7729,
gnuradio/branches/developers/jcorgan/wav/gnuradio-core/src/python/gnuradio/gr/qa_wavefile.py)
===================================================================
--- gnuradio/trunk/gnuradio-core/src/python/gnuradio/gr/qa_wavefile.py
(rev 0)
+++ gnuradio/trunk/gnuradio-core/src/python/gnuradio/gr/qa_wavefile.py
2008-02-18 06:27:50 UTC (rev 7730)
@@ -0,0 +1,66 @@
+#!/usr/bin/env python
+#
+# 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 GNU Radio; see the file COPYING. If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+from gnuradio import gr, gr_unittest
+
+import os
+from os.path import getsize
+
+class qa_wavefile(gr_unittest.TestCase):
+
+ def setUp (self):
+ self.tb = gr.top_block ()
+
+ def tearDown (self):
+ self.tb = None
+
+ def test_001_checkwavread (self):
+ wf = gr.wavfile_source("./test_16bit_1chunk.wav")
+ self.assertEqual(wf.sample_rate(), 8000)
+
+ def test_002_checkwavcopy (self):
+ infile = "test_16bit_1chunk.wav"
+ outfile = "test_out.wav"
+
+ wf_in = gr.wavfile_source(infile)
+ wf_out = gr.wavfile_sink(outfile,
+ wf_in.channels(),
+ wf_in.sample_rate(),
+ wf_in.bits_per_sample())
+ self.tb.connect(wf_in, wf_out)
+ self.tb.run()
+ wf_out.close()
+
+ self.assertEqual(getsize(infile), getsize(outfile))
+
+ in_f = file(infile, 'rb')
+ out_f = file(outfile, 'rb')
+
+ in_data = in_f.read(getsize(infile))
+ out_data = out_f.read(getsize(outfile))
+ os.remove(outfile)
+
+ self.assertEqual(in_data, out_data)
+
+
+if __name__ == '__main__':
+ gr_unittest.main ()
Copied:
gnuradio/trunk/gnuradio-core/src/python/gnuradio/gr/test_16bit_1chunk.wav (from
rev 7729,
gnuradio/branches/developers/jcorgan/wav/gnuradio-core/src/python/gnuradio/gr/test_16bit_1chunk.wav)
===================================================================
(Binary files differ)
Modified: gnuradio/trunk/gnuradio-examples/python/audio/Makefile.am
===================================================================
--- gnuradio/trunk/gnuradio-examples/python/audio/Makefile.am 2008-02-18
06:02:59 UTC (rev 7729)
+++ gnuradio/trunk/gnuradio-examples/python/audio/Makefile.am 2008-02-18
06:27:50 UTC (rev 7730)
@@ -27,6 +27,7 @@
audio_play.py \
audio_to_file.py \
dial_tone.py \
+ dial_tone_wav.py \
mono_tone.py \
multi_tone.py \
noise.py \
Added: gnuradio/trunk/gnuradio-examples/python/audio/dial_tone_wav.py
===================================================================
--- gnuradio/trunk/gnuradio-examples/python/audio/dial_tone_wav.py
(rev 0)
+++ gnuradio/trunk/gnuradio-examples/python/audio/dial_tone_wav.py
2008-02-18 06:27:50 UTC (rev 7730)
@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+#
+# Copyright 2004,2005,2007,2008 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 GNU Radio; see the file COPYING. If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+# GNU Radio example program to record a dial tone to a WAV file
+
+from gnuradio import gr
+from gnuradio.eng_option import eng_option
+from optparse import OptionParser
+
+class my_top_block(gr.top_block):
+
+ def __init__(self):
+ gr.top_block.__init__(self)
+
+ usage = "%prog: [options] filename"
+ parser = OptionParser(option_class=eng_option, usage=usage)
+ parser.add_option("-r", "--sample-rate", type="eng_float",
default=48000,
+ help="set sample rate to RATE (48000)")
+ parser.add_option("-N", "--samples", type="eng_float", default=None,
+ help="number of samples to record")
+ (options, args) = parser.parse_args ()
+ if len(args) != 1 or options.samples is None:
+ parser.print_help()
+ raise SystemExit, 1
+
+ sample_rate = int(options.sample_rate)
+ ampl = 0.1
+
+ src0 = gr.sig_source_f (sample_rate, gr.GR_SIN_WAVE, 350, ampl)
+ src1 = gr.sig_source_f (sample_rate, gr.GR_SIN_WAVE, 440, ampl)
+ head0 = gr.head(gr.sizeof_float, int(options.samples))
+ head1 = gr.head(gr.sizeof_float, int(options.samples))
+ dst = gr.wavfile_sink(args[0], 2, int(options.sample_rate), 16)
+
+ self.connect(src0, head0, (dst, 0))
+ self.connect(src1, head1, (dst, 1))
+
+if __name__ == '__main__':
+ try:
+ my_top_block().run()
+ except KeyboardInterrupt:
+ pass
Property changes on:
gnuradio/trunk/gnuradio-examples/python/audio/dial_tone_wav.py
___________________________________________________________________
Name: svn:executable
+ *
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- [Commit-gnuradio] r7730 - in gnuradio/trunk: gnuradio-core/src/lib/io gnuradio-core/src/python/gnuradio/gr gnuradio-examples/python/audio,
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