1 /*****************************************************************************
5 ** Purpose: Converts a channel of WinDAQ file to .WAV format
6 ** Programmer: Kevin Rosenberg <kevin@rosenberg.net>
7 ** Date Started: Jan 2003
9 ** Copyright (c) 2003 Kevin Rosenberg
11 ** This program is free software; you can redistribute it and/or modify
12 ** it under the terms of the GNU General Public License (version 2) as
13 ** published by the Free Software Foundation.
15 ** This program is distributed in the hope that it will be useful,
16 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ** GNU General Public License for more details.
20 ** You should have received a copy of the GNU General Public License
21 ** along with this program; if not, write to the Free Software
22 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 ******************************************************************************/
29 bool g_verbose = false;
31 bool g_dry_run = false;
32 bool g_ignore_zero = false;
33 bool g_dont_demean = false;
42 #define O_BINARY _O_BINARY
43 #define O_RDONLY _O_RDONLY
44 #define O_WRONLY _O_WRONLY
45 #define O_RDWR _O_RDRW
46 #define O_TRUNC _O_TRUNC
47 #define O_CREAT _O_CREAT
48 const int g_fileMode = _S_IWRITE | _S_IREAD;
49 struct fpos_t std::_Fpz = {0,0};
51 const int g_fileMode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
52 // Define as NULL for non-Windows platforms
60 error_msg (const char *msg)
62 std::cerr << msg << std::endl;
66 info_msg (const char* msg)
68 std::cout << msg << std::endl;
72 info_msg_sans_newline (const char* msg)
78 fileBasename (const char* filename)
80 const char* pslash = strrchr (filename, '/');
81 const char* pbackslash = strrchr (filename, '\\');
82 const char* p = filename;
83 if (pbackslash && (! pslash || pbackslash >= pslash))
85 else if (pslash && (! pbackslash || pslash >= pbackslash))
92 str_rm_tail (char *str, const char* const charlist)
96 for (i = strlen(str) - 1; i >= 0; i--)
97 if (strchr (charlist, str[i]) != NULL)
100 break; /* found non-specified char, all done */
106 str_wrm_tail (char *str)
108 return (str_rm_tail(str, "\b\t\n\r"));
113 usage (const char* progname)
115 std::cout << "usage: " << fileBasename (progname) << " [OPTIONS] <wdq-file> <channel-number> <wav-file>\n";
116 std::cout << "OPTIONS\n";
117 std::cout << " -p Play channel through audio system\n";
118 std::cout << " -q Supress all messages\n";
119 std::cout << " -z Scale output without preserving zero point\n";
120 std::cout << " -m Do not demean the data (don't subtract the mean value from each sample)\n";
121 std::cout << " -n Dry run (do not create any output\n";
122 std::cout << " -v Verbose mode\n";
123 std::cout << " -d Debug mode\n";
124 std::cout << " -h Print this help message\n";
129 main (int argc, char *argv[])
134 const char* progname = argv[0];
136 while ((c = getopt (argc, argv, "rqvzmndph")) != -1) {
142 g_dont_demean = true;
148 g_ignore_zero = true;
172 std::cerr << "Too many parameters\n";
177 char wdq_fname[MAX_INPUT_STR];
179 strncpy (wdq_fname, argv [0], MAX_INPUT_STR);
181 std::cout << "Enter input WinDAQ filename: ";
182 std::cin.getline (wdq_fname, MAX_INPUT_STR);
185 char channel_buf [MAX_INPUT_STR];
187 strncpy (channel_buf, argv[1], MAX_INPUT_STR);
189 std::cout << "Enter channel number: ";
190 std::cin.getline (channel_buf, MAX_INPUT_STR);
193 char *channel_endptr;
194 int channel = static_cast<int>(strtol (channel_buf, &channel_endptr, 10));
195 if (*channel_endptr != 0) {
196 std::ostringstream os;
197 os << "Error: Channel " << channel_buf << " is not an integer";
198 error_msg (os.str().c_str());
203 char wav_fname[MAX_INPUT_STR];
206 strncpy (wav_fname, argv[2], MAX_INPUT_STR);
208 std::cout << "Enter output wav filename: ";
209 std::cin.getline (wav_fname, MAX_INPUT_STR);
212 if (! wdq2wav (wdq_fname, channel, wav_fname, play))
219 wdq2wav (const char* wdq_fname, const int channel, const char *wav_fname, bool play)
221 WindaqFile wdq (wdq_fname);
223 if (! wdq.ReadHeader()) {
224 if (wdq.m_error.size()) {
225 std::ostringstream os;
226 os << "Error reading file " << wdq_fname << ": " << wdq.m_error.c_str();
227 error_msg (os.str().c_str());
229 std::ostringstream os;
230 os << "Error reading file " << wdq_fname;
231 error_msg (os.str().c_str());
236 if (wdq.any_packed_channels()) {
237 std::ostringstream os;
238 os << "File contains 'packed' channels." << std::endl;
239 os << "Convert to 'Advanced CODAS headers' before processing with wdq2wav.";
240 error_msg (os.str().c_str());
244 if (! g_quiet || g_verbose || g_debug) {
245 std::ostringstream os1;
246 os1 << "File: " << wdq_fname;
247 info_msg (os1.str().c_str());
248 std::ostringstream os;
249 os << "Format: " << (wdq.m_bLegacy_format ? "Legacy" : "Non-legacy");
250 info_msg(os.str().c_str());
251 std::ostringstream os2;
252 time_t time = wdq.m_time_acq_start;
253 struct tm* tm = gmtime (&time);
254 os2 << "Time File Creation: " << asctime(tm);
255 info_msg_sans_newline (os2.str().c_str());
256 std::ostringstream os3;
257 time = wdq.m_time_acq_stop;
259 os3 << "Time File Written: " << asctime(tm);
260 info_msg_sans_newline (os3.str().c_str());
261 std::ostringstream os4;
262 os4 << "Samples: " << wdq.m_nSamples <<
263 ", Channels: " << wdq.m_nChannels <<
264 ", Sample Rate: " << wdq.m_sample_rate;
265 info_msg (os4.str().c_str());
268 WindaqChannel wdq_channel (wdq, channel);
269 if (! wdq_channel.m_valid) {
270 error_msg ("Error reading data from channel");
274 if (! g_quiet || g_verbose || g_debug) {
275 std::ostringstream os1;
276 os1 << "Channel " << channel << ", Units: " << wdq_channel.m_units
277 << ", Minimum: " << wdq_channel.m_min_raw_data
278 << " (" << wdq_channel.raw2measured(wdq_channel.m_min_raw_data)
279 << "), Maximum: " << wdq_channel.m_max_raw_data
280 << " (" << wdq_channel.raw2measured(wdq_channel.m_max_raw_data) << ")";
281 info_msg (os1.str().c_str());
283 std::cout << "Mean: " << wdq_channel.raw2measured(wdq_channel.m_raw_mean) <<
284 " " << wdq_channel.m_units;
287 if (! g_dry_run && !g_dont_demean) {
288 std::cout << " (removing)\n";
289 int mean = nearest<int>(wdq_channel.m_raw_mean);
290 for (unsigned int i = 0; i < wdq.m_nSamples; i++)
291 wdq_channel.m_data[i] -= mean;
293 std::cout << " (not removing)\n";
297 std::ostringstream os4;
298 os4 << " Scaled minimum: " << wdq_channel.m_min_scaled_data <<
299 ", maximum: " << wdq_channel.m_max_scaled_data;
300 info_msg (os4.str().c_str());
301 std::ostringstream os5;
302 os5 << " Slope " << wdq_channel.m_slope <<
303 ", Intercept " << wdq_channel.m_intercept;
304 info_msg (os5.str().c_str());
310 WavFile wav (wdq_channel, wav_fname);
313 error_msg ("Error extracting wav from channel");
317 if (! wav.WriteFile ()) {
318 error_msg ("Error writing file");
329 WindaqFile::WindaqFile (const char* fname)
330 : m_valid(false), m_fd(0), m_nChannels(0), m_nSamples(0), m_sample_rate(0),
335 WindaqFile::~WindaqFile ()
341 bool read_int1 (int fd, unsigned char& n)
344 if (read (fd, &tmp1, 1) != 1)
351 bool read_int2 (int fd, unsigned short int& n)
355 if (read (fd, &tmp1, 1) != 1)
358 if (read (fd, &tmp1, 1) != 1)
361 n = tmp2 + (tmp1 * 256);
365 bool read_int4 (int fd, unsigned int& n)
368 unsigned short int tmp2;
369 if (! read_int2 (fd, tmp2))
372 if (! read_int2 (fd, tmp2))
375 n = tmp4 + (tmp2 * 65536);
379 bool read_float8 (int fd, double& f)
382 if (read (fd, p, 8) != 8)
387 c = p[0]; p[0] = p[7]; p[7] = c;
388 c = p[1]; p[1] = p[6]; p[6] = c;
389 c = p[2]; p[2] = p[5]; p[5] = c;
390 c = p[3]; p[3] = p[4]; p[4] = c;
393 double *pd = reinterpret_cast<double*>(&p[0]);
400 WindaqFile::ReadHeader ()
403 if ((m_fd = open (m_strFile.c_str(), O_RDONLY | O_BINARY)) < 0) {
404 m_error = "Unable to open file";
408 lseek (0, 0, SEEK_SET);
409 unsigned short int element1;
410 if (! read_int2 (m_fd, element1))
413 short unsigned int byte1 = (element1 & 0xFF00) >> 8;
414 short unsigned int byte2 = element1 & 0xFF;
415 if (byte1 == 0 || byte1 == 1) {
416 m_bLegacy_format = false;
417 m_sr_denom = m_sr_numer = 0;
419 m_sr_denom = (element1 & 0x7fff) >> 5;
420 m_sr_numer = (element1 & 0x8000) << 1;
421 m_bLegacy_format = true;
423 unsigned short int element2;
424 if (! read_int2 (m_fd, element2))
427 if (m_bLegacy_format)
428 m_sr_numer |= element2;
430 unsigned char element3;
431 if (! read_int1 (m_fd, element3))
433 m_channel_offset = element3;
435 std::cout << "Channel offset: " << m_channel_offset << std::endl;
437 unsigned char element4;
438 if (! read_int1 (m_fd, element4))
440 m_nBytes_channel_header = element4;
442 std::cout << "Channel header bytes: " << m_nBytes_channel_header << std::endl;
444 unsigned short int element5;
445 if (! read_int2 (m_fd, element5))
447 m_nHeader_bytes = element5;
449 std::cout << "Header bytes: " << m_nHeader_bytes << std::endl;
451 m_nMaxChannels = (m_nHeader_bytes - 112) / 36;
452 if (m_nMaxChannels >= 144)
453 m_nChannels = byte2 & 0xFF;
455 m_nChannels = byte2 & 0x1F;
457 unsigned int element6;
458 if (! read_int4 (m_fd, element6))
460 m_nData_bytes = element6;
462 std::cout << "Data bytes: " << m_nData_bytes << std::endl;
464 m_nSamples = (m_nData_bytes / m_nChannels) / 2;
466 lseek (m_fd, 28, SEEK_SET);
468 if (! read_float8 (m_fd, element13))
470 m_time_between_channel_samples = element13;
472 if (m_bLegacy_format)
473 m_sample_rate = (double) m_sr_numer / (double) (m_sr_denom * m_nChannels);
475 m_sample_rate = (double) 1 / m_time_between_channel_samples;
477 lseek (m_fd, 36, SEEK_SET);
478 if (! read_int4 (m_fd, m_time_acq_start))
481 if (! read_int4 (m_fd, m_time_acq_stop))
484 lseek (m_fd, 100, SEEK_SET);
485 unsigned short int element27;
486 if (! read_int2 (m_fd, element27))
489 m_bHires = (element27 & 0x0001) ? true : false;
491 std::cout << "High resolution: ";
497 std::cout << std::endl;
500 // Verify Windaq signature
501 lseek (m_fd, m_nHeader_bytes - 2, SEEK_SET);
502 unsigned short int element35;
503 if (! read_int2 (m_fd, element35))
506 if (element35 != 0x8001) {
507 std::ostringstream os;
508 m_error = "Incorrect signagure: file is not a valid WinDAQ file";
517 WindaqFile::any_packed_channels ()
519 for (int iChannel = 0; iChannel < m_nChannels; iChannel++)
520 if (is_channel_packed (iChannel))
527 WindaqFile::is_channel_packed (const int channel)
529 long iStart = m_channel_offset + channel * m_nBytes_channel_header;
531 lseek (m_fd, iStart + 31, SEEK_SET);
532 unsigned char iReadings_per_data_point;
533 if (! read_int1 (m_fd, iReadings_per_data_point))
536 if (iReadings_per_data_point > 1)
542 WindaqChannel::WindaqChannel (WindaqFile& wdq, const int channel)
543 : r_wdq(wdq), m_data(0), m_slope(0), m_intercept (0), m_channel(channel),
547 if (channel >= 1 && channel <= wdq.m_nChannels) {
548 if (read_channel_data())
551 std::ostringstream os;
552 os << "Channel " << channel << " is invalid, valid range 1-" <<
554 error_msg (os.str().c_str());
559 WindaqChannel::~WindaqChannel ()
566 WindaqChannel::read_channel_data ()
570 m_data = new signed short int [r_wdq.m_nSamples * 2];
572 lseek (fd, r_wdq.m_channel_offset + 8 +
573 (m_channel - 1) * r_wdq.m_nBytes_channel_header,
575 if (! read_float8 (fd, m_slope))
578 if (! read_float8 (fd, m_intercept))
583 if (read (fd, units, 6) != 6) {
584 error_msg ("Error reading file");
589 long int row_bytes = 2 * r_wdq.m_nChannels;
591 signed short int *sample_row = new signed short int [row_bytes];
593 signed short int* psample = &sample_row[m_channel - 1];
595 lseek (fd, r_wdq.m_nHeader_bytes, SEEK_SET);
597 signed short int data_max = 0, data_min = 0;
598 double total_data = 0;
599 for (i = 0; i < r_wdq.m_nSamples; i++) {
600 if (read (fd, sample_row, row_bytes) != row_bytes) {
601 std::ostringstream os;
602 os << "Error reading file at " << i;
603 error_msg (os.str().c_str());
607 signed short int v = *psample;
610 unsigned char* p = reinterpret_cast<unsigned char*>(&v);
611 unsigned char c = p[0]; p[0] = p[1]; p[1] = c;
614 signed short int value = v;
615 if (! r_wdq.m_bHires)
625 if (value > data_max)
627 else if (value < data_min)
632 m_max_raw_data = data_max;
633 m_min_raw_data = data_min;
634 m_max_scaled_data = (m_slope * data_max) + m_intercept;
635 m_min_scaled_data = (m_slope * data_min) + m_intercept;
637 m_raw_mean = total_data / static_cast<double>(r_wdq.m_nSamples);
644 WavFile::WavFile (WindaqChannel& wdq_channel, const char* fname)
645 : m_valid(false), m_data(0), m_nSamples(0), m_strFile(fname), m_fd(0)
647 if (wdq_channel.m_valid) {
648 m_nSamples = wdq_channel.r_wdq.m_nSamples;
650 m_nBitsPerSample = 16;
651 m_nBytesPerSample = 2;
652 m_rate = wdq_channel.r_wdq.m_sample_rate;
654 double data_offset = 0, data_scale = 0;
656 data_offset = -wdq_channel.m_min_scaled_data;
657 if (wdq_channel.m_max_scaled_data != wdq_channel.m_min_scaled_data)
658 data_scale = 65535. / (wdq_channel.m_max_scaled_data -
659 wdq_channel.m_min_scaled_data);
661 double max_value = fabs(wdq_channel.m_max_scaled_data);
662 if (fabs (wdq_channel.m_min_scaled_data) > max_value)
663 max_value = fabs (wdq_channel.m_min_scaled_data);
665 data_scale = 32767. / max_value;
669 std::ostringstream os;
670 os << " Wav data_scale: " << data_scale << ", data_offset: " << data_offset;
671 info_msg (os.str().c_str());
675 m_nDataBytes = m_nSamples * m_nBytesPerSample * m_nChannels;
676 m_nFileBytes = m_nHeaderBytes + m_nDataBytes;
678 unsigned int nHeaderShortInts = m_nHeaderBytes / sizeof(signed short int);
680 m_data = new signed short int [m_nSamples + nHeaderShortInts];
681 signed short int* input = wdq_channel.m_data;
682 signed short int* output = &m_data[nHeaderShortInts];
683 double slope = wdq_channel.m_slope;
684 double intercept = wdq_channel.m_intercept;
686 if (! fill_header ())
691 for (i = 0; i < m_nSamples; i++) {
692 double value = input[i];
693 value = (slope * value) + intercept;
695 value = (value + data_offset) * data_scale;
696 value += 0.5 - 32768;
698 value = value * data_scale;
701 signed short int v = static_cast<signed short int>(value);
703 unsigned char* p = reinterpret_cast<unsigned char*>(&v);
704 unsigned char c = p[0]; p[0] = p[1]; p[1] = c;
724 put_int4 (char* p, unsigned int n)
727 *(p+1) = 0xFF & (n >> 8);
728 *(p+2) = 0xFF & (n >> 16);
729 *(p+3) = 0xFF & (n >> 24);
733 put_int2 (char* p, unsigned short int n)
736 *(p+1) = 0xFF & (n >> 8);
740 WavFile::fill_header ()
742 char* pData = reinterpret_cast<char*> (m_data);
744 strncpy (pData, "RIFF", 4);
746 // Length of file after 8 byte header
747 put_int4 (pData + 4, 36 + m_nDataBytes);
749 strncpy (pData + 8, "WAVEfmt ", 8);
751 // Length of header block
752 put_int4 (pData + 16, 0x10);
755 put_int2 (pData + 20, 1);
757 /* Number of channels */
758 put_int2 (pData + 22, m_nChannels);
761 put_int4 (pData + 24, static_cast<int> (m_rate + 0.5));
764 put_int4 (pData + 28, static_cast<int> (m_rate * m_nBytesPerSample + 0.5));
767 put_int2 (pData + 32, m_nBytesPerSample * m_nChannels);
770 put_int2 (pData + 34, m_nBitsPerSample);
772 strncpy (pData + 36, "data", 4);
774 put_int4 (pData + 40, m_nDataBytes);
780 WavFile::WriteFile ()
786 if ((m_fd = open (m_strFile.c_str(), O_WRONLY | O_BINARY | O_TRUNC | O_CREAT, g_fileMode)) == 0) {
787 std::ostringstream os;
788 os << "Error opening output file " << m_strFile.c_str();
789 error_msg (os.str().c_str());
793 lseek (m_fd, 0, SEEK_SET);
794 if (write (m_fd, m_data, m_nFileBytes) != m_nFileBytes) {
795 error_msg ("Error writing file");
799 if (close (m_fd) < 0)
800 error_msg ("Error closing output file");
808 #include <mmsystem.h>
809 #elif defined(__linux__)
810 #include <sys/ioctl.h>
811 #include <sys/soundcard.h>
818 if (PlaySound ((LPCSTR) m_data, 0, SND_MEMORY | SND_NODEFAULT))
820 #elif defined(__linux__)
822 if ((fd = open ("/dev/dsp",O_WRONLY)) == -1) {
823 error_msg ("Error opening /dev/dsp");
827 int format = AFMT_S16_LE;
828 if (ioctl (fd, SNDCTL_DSP_SETFMT, &format) == -1) {
829 error_msg ("Error setting DSP format");
830 close(fd); return false;
832 if (format != AFMT_S16_LE) {
833 error_msg ("DSP Format not set");
834 close(fd); return false;
837 unsigned int channels = m_nChannels;
838 if (ioctl (fd, SNDCTL_DSP_CHANNELS, &format) == -1) {
839 error_msg ("Error setting number of channels");
840 close(fd); return false;
842 if (channels != m_nChannels) {
843 error_msg ("Number of channels not set");
844 close(fd); return false;
847 unsigned int speed = static_cast<int>(m_rate + 0.5);
848 if (ioctl (fd, SNDCTL_DSP_SPEED, &speed) == -1) {
849 error_msg ("Error setting sample rate");
850 close(fd); return false;
852 if (speed != m_rate && ! g_quiet) {
853 std::ostringstream os;
854 os << "Warning: Sample rate set to " << speed << ", not " << m_rate;
855 error_msg (os.str().c_str());
858 if (write (fd, reinterpret_cast<char*>(m_data) + m_nHeaderBytes, m_nDataBytes) !=
860 error_msg ("Error writing audio samples");
861 close(fd); return false;