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
13 ** This program is free software; you can redistribute it and/or modify
14 ** it under the terms of the GNU General Public License (version 2) as
15 ** published by the Free Software Foundation.
17 ** This program is distributed in the hope that it will be useful,
18 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ** GNU General Public License for more details.
22 ** You should have received a copy of the GNU General Public License
23 ** along with this program; if not, write to the Free Software
24 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 ******************************************************************************/
30 const char* g_szIdStr = "$Id$";
33 bool g_verbose = false;
35 bool g_ignore_zero = false;
36 bool g_dont_demean = false;
45 #define O_BINARY _O_BINARY
46 #define O_RDONLY _O_RDONLY
47 #define O_WRONLY _O_WRONLY
48 #define O_RDWR _O_RDRW
49 #define O_TRUNC _O_TRUNC
50 #define O_CREAT _O_CREAT
51 const int g_fileMode = _S_IWRITE | _S_IREAD;
52 struct fpos_t std::_Fpz = {0,0};
54 const int g_fileMode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
55 // Define as NULL for non-Windows platforms
63 error_msg (const char *msg)
65 std::cerr << msg << std::endl;
69 info_msg (const char* msg)
71 std::cout << msg << std::endl;
75 info_msg_sans_newline (const char* msg)
81 fileBasename (const char* filename)
83 const char* pslash = strrchr (filename, '/');
84 const char* pbackslash = strrchr (filename, '\\');
85 const char* p = filename;
86 if (pbackslash && (! pslash || pbackslash >= pslash))
88 else if (pslash && (! pbackslash || pslash >= pbackslash))
95 str_rm_tail (char *str, const char* const charlist)
99 for (i = strlen(str) - 1; i >= 0; i--)
100 if (strchr (charlist, str[i]) != NULL)
103 break; /* found non-specified char, all done */
109 str_wrm_tail (char *str)
111 return (str_rm_tail(str, "\b\t\n\r"));
116 usage (const char* progname)
118 std::cout << "usage: " << fileBasename (progname) << " [OPTIONS] <wdq-file> <channel-number> <wav-file>\n";
119 std::cout << "OPTIONS\n";
120 std::cout << " -p Play channel through audio system\n";
121 std::cout << " -q Supress all messages\n";
122 std::cout << " -z Scale output without preserving zero point\n";
123 std::cout << " -m Do not demean the data (don't subtract the mean value from each sample)\n";
124 std::cout << " -v Verbose mode\n";
125 std::cout << " -d Debug mode\n";
126 std::cout << " -r Print program version and exit\n";
127 std::cout << " -h Print this help message\n";
132 main (int argc, char *argv[])
137 const char* progname = argv[0];
139 while ((c = getopt (argc, argv, "rqvzmdph")) != -1) {
142 std::cout << "Version " << g_szIdStr << std::endl;
149 g_dont_demean = true;
152 g_ignore_zero = true;
173 if (g_verbose || g_debug)
174 std::cout << "Version " << g_szIdStr << std::endl;
179 std::cerr << "Too many parameters\n";
184 char wdq_fname[MAX_INPUT_STR];
186 strncpy (wdq_fname, argv [0], MAX_INPUT_STR);
188 std::cout << "Enter input WinDAQ filename: ";
189 std::cin.getline (wdq_fname, MAX_INPUT_STR);
192 char channel_buf [MAX_INPUT_STR];
194 strncpy (channel_buf, argv[1], MAX_INPUT_STR);
196 std::cout << "Enter channel number: ";
197 std::cin.getline (channel_buf, MAX_INPUT_STR);
200 char *channel_endptr;
201 int channel = static_cast<int>(strtol (channel_buf, &channel_endptr, 10));
202 if (*channel_endptr != 0) {
203 std::ostringstream os;
204 os << "Error: Channel " << channel_buf << " is not an integer";
205 error_msg (os.str().c_str());
210 char wav_fname[MAX_INPUT_STR];
212 strncpy (wav_fname, argv[2], MAX_INPUT_STR);
214 std::cout << "Enter output wav filename: ";
215 std::cin.getline (wav_fname, MAX_INPUT_STR);
218 if (! wdq2wav (wdq_fname, channel, wav_fname, play))
225 wdq2wav (const char* wdq_fname, const int channel, const char *wav_fname, bool play)
227 WindaqFile wdq (wdq_fname);
229 if (! wdq.ReadHeader()) {
230 if (wdq.m_error.size()) {
231 std::ostringstream os;
232 os << "Error reading file " << wdq_fname << ": " << wdq.m_error.c_str();
233 error_msg (os.str().c_str());
235 std::ostringstream os;
236 os << "Error reading file " << wdq_fname;
237 error_msg (os.str().c_str());
242 if (wdq.any_packed_channels()) {
243 std::ostringstream os;
244 os << "File contains 'packed' channels." << std::endl;
245 os << "Convert to 'Advanced CODAS headers' before processing with wdq2wav.";
246 error_msg (os.str().c_str());
250 if (! g_quiet || g_verbose || g_debug) {
251 std::ostringstream os1;
252 os1 << "File: " << wdq_fname;
253 info_msg (os1.str().c_str());
254 std::ostringstream os;
255 os << "Legacy Format: ";
256 if (wdq.m_bLegacy_format)
260 info_msg(os.str().c_str());
261 std::ostringstream os2;
262 time_t time = wdq.m_time_acq_start;
263 struct tm* tm = gmtime (&time);
264 os2 << " Time File Creation: " << asctime(tm);
265 info_msg_sans_newline (os2.str().c_str());
266 std::ostringstream os3;
267 time = wdq.m_time_acq_stop;
269 os3 << " Time File Written: " << asctime(tm);
270 info_msg_sans_newline (os3.str().c_str());
271 std::ostringstream os4;
272 os4 << " Samples: " << wdq.m_nSamples <<
273 ", Channels: " << wdq.m_nChannels <<
274 ", Sample Rate: " << wdq.m_sample_rate;
275 info_msg (os4.str().c_str());
278 WindaqChannel wdq_channel (wdq, channel);
279 if (! wdq_channel.m_valid) {
280 error_msg ("Error reading data from channel");
284 if (! g_quiet || g_verbose || g_debug) {
285 std::ostringstream os1;
286 os1 << "Channel " << channel;
287 info_msg (os1.str().c_str());
288 std::ostringstream os2;
289 os2 << " Units: " << wdq_channel.m_units.c_str();
290 info_msg (os2.str().c_str());
291 std::ostringstream os3;
292 os3 << " Raw minimum: " << wdq_channel.m_min_raw_data <<
293 ", maximum: " << wdq_channel.m_max_raw_data;
294 info_msg (os3.str().c_str());
298 std::ostringstream os4;
299 os4 << " Scaled minimum: " << wdq_channel.m_min_scaled_data <<
300 ", maximum: " << wdq_channel.m_max_scaled_data;
301 info_msg (os4.str().c_str());
302 std::ostringstream os5;
303 os5 << " Slope " << wdq_channel.m_slope <<
304 ", Intercept " << wdq_channel.m_intercept;
305 info_msg (os5.str().c_str());
308 WavFile wav (wdq_channel, wav_fname);
311 error_msg ("Error extracting wav from channel");
315 if (! wav.WriteFile ()) {
316 error_msg ("Error writing file");
327 WindaqFile::WindaqFile (const char* fname)
328 : m_valid(false), m_fd(0), m_nChannels(0), m_nSamples(0), m_sample_rate(0),
333 WindaqFile::~WindaqFile ()
339 bool read_int1 (int fd, unsigned char& n)
342 if (read (fd, &tmp1, 1) != 1)
349 bool read_int2 (int fd, unsigned short int& n)
353 if (read (fd, &tmp1, 1) != 1)
356 if (read (fd, &tmp1, 1) != 1)
359 n = tmp2 + (tmp1 * 256);
363 bool read_int4 (int fd, unsigned int& n)
366 unsigned short int tmp2;
367 if (! read_int2 (fd, tmp2))
370 if (! read_int2 (fd, tmp2))
373 n = tmp4 + (tmp2 * 65536);
377 bool read_float8 (int fd, double& f)
379 unsigned char buf[8];
380 if (read (fd, &buf, 8) != 8)
385 c = buf[0]; buf[0] = buf[7]; buf[7] = c;
386 c = buf[1]; buf[1] = buf[6]; buf[6] = c;
387 c = buf[2]; buf[2] = buf[5]; buf[5] = c;
388 c = buf[3]; buf[3] = buf[4]; buf[4] = c;
391 f = *(reinterpret_cast<double*>(buf));
397 WindaqFile::ReadHeader ()
400 if ((m_fd = open (m_strFile.c_str(), O_RDONLY | O_BINARY)) < 0) {
401 m_error = "Unable to open file";
405 lseek (0, 0, SEEK_SET);
406 unsigned short int element1;
407 if (! read_int2 (m_fd, element1))
410 short unsigned int byte1 = (element1 & 0xFF00) >> 8;
411 short unsigned int byte2 = element1 & 0xFF;
412 if (byte1 == 0 || byte1 == 1) {
413 m_bLegacy_format = false;
414 m_sr_denom = m_sr_numer = 0;
416 m_sr_denom = (element1 & 0x7fff) >> 5;
417 m_sr_numer = (element1 & 0x8000) << 1;
418 m_bLegacy_format = true;
420 unsigned short int element2;
421 if (! read_int2 (m_fd, element2))
424 if (m_bLegacy_format)
425 m_sr_numer |= element2;
427 unsigned char element3;
428 if (! read_int1 (m_fd, element3))
430 m_channel_offset = element3;
432 std::cout << "Channel offset: " << m_channel_offset << std::endl;
434 unsigned char element4;
435 if (! read_int1 (m_fd, element4))
437 m_nBytes_channel_header = element4;
439 std::cout << "Channel header bytes: " << m_nBytes_channel_header << std::endl;
441 unsigned short int element5;
442 if (! read_int2 (m_fd, element5))
444 m_nHeader_bytes = element5;
446 std::cout << "Header bytes: " << m_nHeader_bytes << std::endl;
448 m_nMaxChannels = (m_nHeader_bytes - 112) / 36;
449 if (m_nMaxChannels >= 144)
450 m_nChannels = byte2 & 0xFF;
452 m_nChannels = byte2 & 0x1F;
454 unsigned int element6;
455 if (! read_int4 (m_fd, element6))
457 m_nData_bytes = element6;
459 std::cout << "Data bytes: " << m_nData_bytes << std::endl;
461 m_nSamples = (m_nData_bytes / m_nChannels) / 2;
463 lseek (m_fd, 28, SEEK_SET);
465 if (! read_float8 (m_fd, element13))
467 m_time_between_channel_samples = element13;
469 if (m_bLegacy_format)
470 m_sample_rate = (double) m_sr_numer / (double) (m_sr_denom * m_nChannels);
472 m_sample_rate = (double) m_nChannels / m_time_between_channel_samples;
474 lseek (m_fd, 36, SEEK_SET);
475 if (! read_int4 (m_fd, m_time_acq_start))
478 if (! read_int4 (m_fd, m_time_acq_stop))
481 lseek (m_fd, 100, SEEK_SET);
482 unsigned short int element27;
483 if (! read_int2 (m_fd, element27))
486 m_bHires = (element27 & 0x0001) ? true : false;
488 std::cout << "High resolution: ";
494 std::cout << std::endl;
497 // Verify Windaq signature
498 lseek (m_fd, m_nHeader_bytes - 2, SEEK_SET);
499 unsigned short int element35;
500 if (! read_int2 (m_fd, element35))
503 if (element35 != 0x8001) {
504 std::ostringstream os;
505 m_error = "Incorrect signagure: file is not a valid WinDAQ file";
514 WindaqFile::any_packed_channels ()
516 for (int iChannel = 0; iChannel < m_nChannels; iChannel++)
517 if (is_channel_packed (iChannel))
524 WindaqFile::is_channel_packed (const int channel)
526 long iStart = m_channel_offset + channel * m_nBytes_channel_header;
528 lseek (m_fd, iStart + 31, SEEK_SET);
529 unsigned char iReadings_per_data_point;
530 if (! read_int1 (m_fd, iReadings_per_data_point))
533 if (iReadings_per_data_point > 1)
539 WindaqChannel::WindaqChannel (WindaqFile& wdq, const int channel)
540 : r_wdq(wdq), m_data(0), m_slope(0), m_intercept (0), m_channel(channel),
544 if (channel >= 1 && channel <= wdq.m_nChannels) {
545 if (read_channel_data())
548 std::ostringstream os;
549 os << "Channel " << channel << " is invalid, valid range 1-" <<
551 error_msg (os.str().c_str());
556 WindaqChannel::~WindaqChannel ()
563 WindaqChannel::read_channel_data ()
567 m_data = new signed short int [r_wdq.m_nSamples * 2];
569 lseek (fd, r_wdq.m_channel_offset + 8 +
570 (m_channel - 1) * r_wdq.m_nBytes_channel_header,
572 if (! read_float8 (fd, m_slope))
575 if (! read_float8 (fd, m_intercept))
580 if (read (fd, units, 6) != 6) {
581 error_msg ("Error reading file");
586 long int row_bytes = 2 * r_wdq.m_nChannels;
588 signed short int *sample_row = new signed short int [row_bytes];
590 signed short int* psample = &sample_row[m_channel - 1];
592 lseek (fd, r_wdq.m_nHeader_bytes, SEEK_SET);
594 signed short int data_max = 0, data_min = 0;
595 double total_data = 0;
596 for (i = 0; i < r_wdq.m_nSamples; i++) {
597 if (read (fd, sample_row, row_bytes) != row_bytes) {
598 std::ostringstream os;
599 os << "Error reading file at " << i;
600 error_msg (os.str().c_str());
604 signed short int v = *psample;
607 unsigned char* p = reinterpret_cast<unsigned char*>(&v);
608 unsigned char c = p[0]; p[0] = p[1]; p[1] = c;
611 signed short int value = v;
612 if (! r_wdq.m_bHires)
622 if (value > data_max)
624 else if (value < data_min)
629 m_max_raw_data = data_max;
630 m_min_raw_data = data_min;
631 m_max_scaled_data = (m_slope * data_max) + m_intercept;
632 m_min_scaled_data = (m_slope * data_min) + m_intercept;
634 if (! g_dont_demean) {
635 double dmean = total_data / static_cast<double>(r_wdq.m_nSamples);
636 int mean = nearest<int>(dmean);
637 std::cout << "Removing mean: " << (dmean * m_slope) + m_intercept <<
638 " " << m_units << std::endl;
640 for (i = 0; i < r_wdq.m_nSamples; i++)
649 WavFile::WavFile (WindaqChannel& wdq_channel, const char* fname)
650 : m_valid(false), m_data(0), m_nSamples(0), m_strFile(fname), m_fd(0)
652 if (wdq_channel.m_valid) {
653 m_nSamples = wdq_channel.r_wdq.m_nSamples;
655 m_nBitsPerSample = 16;
656 m_nBytesPerSample = 2;
657 m_rate = wdq_channel.r_wdq.m_sample_rate;
659 double data_offset = 0, data_scale = 0;
661 data_offset = -wdq_channel.m_min_scaled_data;
662 if (wdq_channel.m_max_scaled_data != wdq_channel.m_min_scaled_data)
663 data_scale = 65535. / (wdq_channel.m_max_scaled_data -
664 wdq_channel.m_min_scaled_data);
666 double max_value = fabs(wdq_channel.m_max_scaled_data);
667 if (fabs (wdq_channel.m_min_scaled_data) > max_value)
668 max_value = fabs (wdq_channel.m_min_scaled_data);
670 data_scale = 32767. / max_value;
674 std::ostringstream os;
675 os << " Wav data_scale: " << data_scale << ", data_offset: " << data_offset;
676 info_msg (os.str().c_str());
680 m_nDataBytes = m_nSamples * m_nBytesPerSample * m_nChannels;
681 m_nFileBytes = m_nHeaderBytes + m_nDataBytes;
683 unsigned int nHeaderShortInts = m_nHeaderBytes / sizeof(signed short int);
685 m_data = new signed short int [m_nSamples + nHeaderShortInts];
686 signed short int* input = wdq_channel.m_data;
687 signed short int* output = &m_data[nHeaderShortInts];
688 double slope = wdq_channel.m_slope;
689 double intercept = wdq_channel.m_intercept;
691 if (! fill_header ())
696 for (i = 0; i < m_nSamples; i++) {
697 double value = input[i];
698 value = (slope * value) + intercept;
700 value = (value + data_offset) * data_scale;
701 value += 0.5 - 32768;
703 value = value * data_scale;
706 signed short int v = static_cast<signed short int>(value);
708 unsigned char* p = reinterpret_cast<unsigned char*>(&v);
709 unsigned char c = p[0]; p[0] = p[1]; p[1] = c;
729 put_int4 (char* p, unsigned int n)
732 *(p+1) = 0xFF & (n >> 8);
733 *(p+2) = 0xFF & (n >> 16);
734 *(p+3) = 0xFF & (n >> 24);
738 put_int2 (char* p, unsigned short int n)
741 *(p+1) = 0xFF & (n >> 8);
745 WavFile::fill_header ()
747 char* pData = reinterpret_cast<char*> (m_data);
749 strncpy (pData, "RIFF", 4);
751 // Length of file after 8 byte header
752 put_int4 (pData + 4, 36 + m_nDataBytes);
754 strncpy (pData + 8, "WAVEfmt ", 8);
756 // Length of header block
757 put_int4 (pData + 16, 0x10);
760 put_int2 (pData + 20, 1);
762 /* Number of channels */
763 put_int2 (pData + 22, m_nChannels);
766 put_int4 (pData + 24, static_cast<int> (m_rate + 0.5));
769 put_int4 (pData + 28, static_cast<int> (m_rate * m_nBytesPerSample + 0.5));
772 put_int2 (pData + 32, m_nBytesPerSample * m_nChannels);
775 put_int2 (pData + 34, m_nBitsPerSample);
777 strncpy (pData + 36, "data", 4);
779 put_int4 (pData + 40, m_nDataBytes);
785 WavFile::WriteFile ()
791 if ((m_fd = open (m_strFile.c_str(), O_WRONLY | O_BINARY | O_TRUNC | O_CREAT, g_fileMode)) == 0) {
792 std::ostringstream os;
793 os << "Error opening output file " << m_strFile.c_str();
794 error_msg (os.str().c_str());
798 lseek (m_fd, 0, SEEK_SET);
799 if (write (m_fd, m_data, m_nFileBytes) != m_nFileBytes) {
800 error_msg ("Error writing file");
804 if (close (m_fd) < 0)
805 error_msg ("Error closing output file");
813 #include <mmsystem.h>
815 #include <sys/ioctl.h>
816 #include <sys/soundcard.h>
823 if (PlaySound ((LPCSTR) m_data, 0, SND_MEMORY | SND_NODEFAULT))
827 if ((fd = open ("/dev/dsp",O_WRONLY)) == -1) {
828 error_msg ("Error opening /dev/dsp");
832 int format = AFMT_S16_LE;
833 if (ioctl (fd, SNDCTL_DSP_SETFMT, &format) == -1) {
834 error_msg ("Error setting DSP format");
835 close(fd); return false;
837 if (format != AFMT_S16_LE) {
838 error_msg ("DSP Format not set");
839 close(fd); return false;
842 unsigned int channels = m_nChannels;
843 if (ioctl (fd, SNDCTL_DSP_CHANNELS, &format) == -1) {
844 error_msg ("Error setting number of channels");
845 close(fd); return false;
847 if (channels != m_nChannels) {
848 error_msg ("Number of channels not set");
849 close(fd); return false;
852 unsigned int speed = static_cast<int>(m_rate + 0.5);
853 if (ioctl (fd, SNDCTL_DSP_SPEED, &speed) == -1) {
854 error_msg ("Error setting sample rate");
855 close(fd); return false;
857 if (speed != m_rate && ! g_quiet) {
858 std::ostringstream os;
859 os << "Warning: Sample rate set to " << speed << ", not " << m_rate;
860 error_msg (os.str().c_str());
863 if (write (fd, reinterpret_cast<char*>(m_data) + m_nHeaderBytes, m_nDataBytes) !=
865 error_msg ("Error writing audio samples");
866 close(fd); return false;