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 ******************************************************************************/
29 const char* g_szIdStr = "$Id$";
32 bool g_verbose = false;
34 bool g_ignore_zero = false;
35 bool g_dont_demean = false;
44 #define O_BINARY _O_BINARY
45 #define O_RDONLY _O_RDONLY
46 #define O_WRONLY _O_WRONLY
47 #define O_RDWR _O_RDRW
48 #define O_TRUNC _O_TRUNC
49 #define O_CREAT _O_CREAT
50 const int g_fileMode = _S_IWRITE | _S_IREAD;
51 struct fpos_t std::_Fpz = {0,0};
53 const int g_fileMode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
54 // Define as NULL for non-Windows platforms
62 error_msg (const char *msg)
64 std::cerr << msg << std::endl;
68 info_msg (const char* msg)
70 std::cout << msg << std::endl;
74 info_msg_sans_newline (const char* msg)
80 fileBasename (const char* filename)
82 const char* pslash = strrchr (filename, '/');
83 const char* pbackslash = strrchr (filename, '\\');
84 const char* p = filename;
85 if (pbackslash && (! pslash || pbackslash >= pslash))
87 else if (pslash && (! pbackslash || pslash >= pbackslash))
94 str_rm_tail (char *str, const char* const charlist)
98 for (i = strlen(str) - 1; i >= 0; i--)
99 if (strchr (charlist, str[i]) != NULL)
102 break; /* found non-specified char, all done */
108 str_wrm_tail (char *str)
110 return (str_rm_tail(str, "\b\t\n\r"));
115 usage (const char* progname)
117 std::cout << "usage: " << fileBasename (progname) << " [OPTIONS] <wdq-file> <channel-number> <wav-file>\n";
118 std::cout << "OPTIONS\n";
119 std::cout << " -p Play channel through audio system\n";
120 std::cout << " -q Supress all messages\n";
121 std::cout << " -z Scale output without preserving zero point\n";
122 std::cout << " -m Do not demean the data (don't subtract the mean value from each sample)\n";
123 std::cout << " -v Verbose mode\n";
124 std::cout << " -d Debug mode\n";
125 std::cout << " -r Print program version and exit\n";
126 std::cout << " -h Print this help message\n";
131 main (int argc, char *argv[])
136 const char* progname = argv[0];
138 while ((c = getopt (argc, argv, "rqvzmdph")) != -1) {
141 std::cout << "Version " << g_szIdStr << std::endl;
148 g_dont_demean = true;
151 g_ignore_zero = true;
172 if (g_verbose || g_debug)
173 std::cout << "Version " << g_szIdStr << std::endl;
178 std::cerr << "Too many parameters\n";
183 char wdq_fname[MAX_INPUT_STR];
185 strncpy (wdq_fname, argv [0], MAX_INPUT_STR);
187 std::cout << "Enter input WinDAQ filename: ";
188 std::cin.getline (wdq_fname, MAX_INPUT_STR);
191 char channel_buf [MAX_INPUT_STR];
193 strncpy (channel_buf, argv[1], MAX_INPUT_STR);
195 std::cout << "Enter channel number: ";
196 std::cin.getline (channel_buf, MAX_INPUT_STR);
199 char *channel_endptr;
200 int channel = static_cast<int>(strtol (channel_buf, &channel_endptr, 10));
201 if (*channel_endptr != 0) {
202 std::ostringstream os;
203 os << "Error: Channel " << channel_buf << " is not an integer";
204 error_msg (os.str().c_str());
209 char wav_fname[MAX_INPUT_STR];
211 strncpy (wav_fname, argv[2], MAX_INPUT_STR);
213 std::cout << "Enter output wav filename: ";
214 std::cin.getline (wav_fname, MAX_INPUT_STR);
217 if (! wdq2wav (wdq_fname, channel, wav_fname, play))
224 wdq2wav (const char* wdq_fname, const int channel, const char *wav_fname, bool play)
226 WindaqFile wdq (wdq_fname);
228 if (! wdq.ReadHeader()) {
229 if (wdq.m_error.size()) {
230 std::ostringstream os;
231 os << "Error reading file " << wdq_fname << ": " << wdq.m_error.c_str();
232 error_msg (os.str().c_str());
234 std::ostringstream os;
235 os << "Error reading file " << wdq_fname;
236 error_msg (os.str().c_str());
241 if (wdq.any_packed_channels()) {
242 std::ostringstream os;
243 os << "File contains 'packed' channels." << std::endl;
244 os << "Convert to 'Advanced CODAS headers' before processing with wdq2wav.";
245 error_msg (os.str().c_str());
249 if (! g_quiet || g_verbose || g_debug) {
250 std::ostringstream os1;
251 os1 << "File: " << wdq_fname;
252 info_msg (os1.str().c_str());
253 std::ostringstream os;
254 os << "Legacy Format: ";
255 if (wdq.m_bLegacy_format)
259 info_msg(os.str().c_str());
260 std::ostringstream os2;
261 time_t time = wdq.m_time_acq_start;
262 struct tm* tm = gmtime (&time);
263 os2 << " Time File Creation: " << asctime(tm);
264 info_msg_sans_newline (os2.str().c_str());
265 std::ostringstream os3;
266 time = wdq.m_time_acq_stop;
268 os3 << " Time File Written: " << asctime(tm);
269 info_msg_sans_newline (os3.str().c_str());
270 std::ostringstream os4;
271 os4 << " Samples: " << wdq.m_nSamples <<
272 ", Channels: " << wdq.m_nChannels <<
273 ", Sample Rate: " << wdq.m_sample_rate;
274 info_msg (os4.str().c_str());
277 WindaqChannel wdq_channel (wdq, channel);
278 if (! wdq_channel.m_valid) {
279 error_msg ("Error reading data from channel");
283 if (! g_quiet || g_verbose || g_debug) {
284 std::ostringstream os1;
285 os1 << "Channel " << channel;
286 info_msg (os1.str().c_str());
287 std::ostringstream os2;
288 os2 << " Units: " << wdq_channel.m_units.c_str();
289 info_msg (os2.str().c_str());
290 std::ostringstream os3;
291 os3 << " Raw minimum: " << wdq_channel.m_min_raw_data <<
292 ", maximum: " << wdq_channel.m_max_raw_data;
293 info_msg (os3.str().c_str());
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());
307 WavFile wav (wdq_channel, wav_fname);
310 error_msg ("Error extracting wav from channel");
314 if (! wav.WriteFile ()) {
315 error_msg ("Error writing file");
326 WindaqFile::WindaqFile (const char* fname)
327 : m_valid(false), m_fd(0), m_nChannels(0), m_nSamples(0), m_sample_rate(0),
332 WindaqFile::~WindaqFile ()
338 bool read_int1 (int fd, unsigned char& n)
341 if (read (fd, &tmp1, 1) != 1)
348 bool read_int2 (int fd, unsigned short int& n)
352 if (read (fd, &tmp1, 1) != 1)
355 if (read (fd, &tmp1, 1) != 1)
358 n = tmp2 + (tmp1 * 256);
362 bool read_int4 (int fd, unsigned int& n)
365 unsigned short int tmp2;
366 if (! read_int2 (fd, tmp2))
369 if (! read_int2 (fd, tmp2))
372 n = tmp4 + (tmp2 * 65536);
376 bool read_float8 (int fd, double& f)
378 unsigned char buf[8];
379 if (read (fd, &buf, 8) != 8)
384 c = buf[0]; buf[0] = buf[7]; buf[7] = c;
385 c = buf[1]; buf[1] = buf[6]; buf[6] = c;
386 c = buf[2]; buf[2] = buf[5]; buf[5] = c;
387 c = buf[3]; buf[3] = buf[4]; buf[4] = c;
390 f = *(reinterpret_cast<double*>(buf));
396 WindaqFile::ReadHeader ()
399 if ((m_fd = open (m_strFile.c_str(), O_RDONLY | O_BINARY)) < 0) {
400 m_error = "Unable to open file";
404 lseek (0, 0, SEEK_SET);
405 unsigned short int element1;
406 if (! read_int2 (m_fd, element1))
409 short unsigned int byte1 = (element1 & 0xFF00) >> 8;
410 short unsigned int byte2 = element1 & 0xFF;
411 if (byte1 == 0 || byte1 == 1) {
412 m_bLegacy_format = false;
413 m_sr_denom = m_sr_numer = 0;
415 m_sr_denom = (element1 & 0x7fff) >> 5;
416 m_sr_numer = (element1 & 0x8000) << 1;
417 m_bLegacy_format = true;
419 unsigned short int element2;
420 if (! read_int2 (m_fd, element2))
423 if (m_bLegacy_format)
424 m_sr_numer |= element2;
426 unsigned char element3;
427 if (! read_int1 (m_fd, element3))
429 m_channel_offset = element3;
431 std::cout << "Channel offset: " << m_channel_offset << std::endl;
433 unsigned char element4;
434 if (! read_int1 (m_fd, element4))
436 m_nBytes_channel_header = element4;
438 std::cout << "Channel header bytes: " << m_nBytes_channel_header << std::endl;
440 unsigned short int element5;
441 if (! read_int2 (m_fd, element5))
443 m_nHeader_bytes = element5;
445 std::cout << "Header bytes: " << m_nHeader_bytes << std::endl;
447 m_nMaxChannels = (m_nHeader_bytes - 112) / 36;
448 if (m_nMaxChannels >= 144)
449 m_nChannels = byte2 & 0xFF;
451 m_nChannels = byte2 & 0x1F;
453 unsigned int element6;
454 if (! read_int4 (m_fd, element6))
456 m_nData_bytes = element6;
458 std::cout << "Data bytes: " << m_nData_bytes << std::endl;
460 m_nSamples = (m_nData_bytes / m_nChannels) / 2;
462 lseek (m_fd, 28, SEEK_SET);
464 if (! read_float8 (m_fd, element13))
466 m_time_between_channel_samples = element13;
468 if (m_bLegacy_format)
469 m_sample_rate = (double) m_sr_numer / (double) (m_sr_denom * m_nChannels);
471 m_sample_rate = (double) m_nChannels / m_time_between_channel_samples;
473 lseek (m_fd, 36, SEEK_SET);
474 if (! read_int4 (m_fd, m_time_acq_start))
477 if (! read_int4 (m_fd, m_time_acq_stop))
480 lseek (m_fd, 100, SEEK_SET);
481 unsigned short int element27;
482 if (! read_int2 (m_fd, element27))
485 m_bHires = (element27 & 0x0001) ? true : false;
487 std::cout << "High resolution: ";
493 std::cout << std::endl;
496 // Verify Windaq signature
497 lseek (m_fd, m_nHeader_bytes - 2, SEEK_SET);
498 unsigned short int element35;
499 if (! read_int2 (m_fd, element35))
502 if (element35 != 0x8001) {
503 std::ostringstream os;
504 m_error = "Incorrect signagure: file is not a valid WinDAQ file";
513 WindaqFile::any_packed_channels ()
515 for (int iChannel = 0; iChannel < m_nChannels; iChannel++)
516 if (is_channel_packed (iChannel))
523 WindaqFile::is_channel_packed (const int channel)
525 long iStart = m_channel_offset + channel * m_nBytes_channel_header;
527 lseek (m_fd, iStart + 31, SEEK_SET);
528 unsigned char iReadings_per_data_point;
529 if (! read_int1 (m_fd, iReadings_per_data_point))
532 if (iReadings_per_data_point > 1)
538 WindaqChannel::WindaqChannel (WindaqFile& wdq, const int channel)
539 : r_wdq(wdq), m_data(0), m_slope(0), m_intercept (0), m_channel(channel),
543 if (channel >= 1 && channel <= wdq.m_nChannels) {
544 if (read_channel_data())
547 std::ostringstream os;
548 os << "Channel " << channel << " is invalid, valid range 1-" <<
550 error_msg (os.str().c_str());
555 WindaqChannel::~WindaqChannel ()
562 WindaqChannel::read_channel_data ()
566 m_data = new signed short int [r_wdq.m_nSamples * 2];
568 lseek (fd, r_wdq.m_channel_offset + 8 +
569 (m_channel - 1) * r_wdq.m_nBytes_channel_header,
571 if (! read_float8 (fd, m_slope))
574 if (! read_float8 (fd, m_intercept))
579 if (read (fd, units, 6) != 6) {
580 error_msg ("Error reading file");
585 long int row_bytes = 2 * r_wdq.m_nChannels;
587 signed short int *sample_row = new signed short int [row_bytes];
589 signed short int* psample = &sample_row[m_channel - 1];
591 lseek (fd, r_wdq.m_nHeader_bytes, SEEK_SET);
593 signed short int data_max = 0, data_min = 0;
594 double total_data = 0;
595 for (i = 0; i < r_wdq.m_nSamples; i++) {
596 if (read (fd, sample_row, row_bytes) != row_bytes) {
597 std::ostringstream os;
598 os << "Error reading file at " << i;
599 error_msg (os.str().c_str());
603 signed short int v = *psample;
606 unsigned char* p = reinterpret_cast<unsigned char*>(&v);
607 unsigned char c = p[0]; p[0] = p[1]; p[1] = c;
610 signed short int value = v;
611 if (! r_wdq.m_bHires)
621 if (value > data_max)
623 else if (value < data_min)
628 m_max_raw_data = data_max;
629 m_min_raw_data = data_min;
630 m_max_scaled_data = (m_slope * data_max) + m_intercept;
631 m_min_scaled_data = (m_slope * data_min) + m_intercept;
633 if (! g_dont_demean) {
634 double dmean = total_data / static_cast<double>(r_wdq.m_nSamples);
635 int mean = nearest<int>(dmean);
636 std::cout << "Removing mean: " << (dmean * m_slope) + m_intercept <<
637 " " << m_units << std::endl;
639 for (i = 0; i < r_wdq.m_nSamples; i++)
648 WavFile::WavFile (WindaqChannel& wdq_channel, const char* fname)
649 : m_valid(false), m_data(0), m_nSamples(0), m_strFile(fname), m_fd(0)
651 if (wdq_channel.m_valid) {
652 m_nSamples = wdq_channel.r_wdq.m_nSamples;
654 m_nBitsPerSample = 16;
655 m_nBytesPerSample = 2;
656 m_rate = wdq_channel.r_wdq.m_sample_rate;
658 double data_offset = 0, data_scale = 0;
660 data_offset = -wdq_channel.m_min_scaled_data;
661 if (wdq_channel.m_max_scaled_data != wdq_channel.m_min_scaled_data)
662 data_scale = 65535. / (wdq_channel.m_max_scaled_data -
663 wdq_channel.m_min_scaled_data);
665 double max_value = fabs(wdq_channel.m_max_scaled_data);
666 if (fabs (wdq_channel.m_min_scaled_data) > max_value)
667 max_value = fabs (wdq_channel.m_min_scaled_data);
669 data_scale = 32767. / max_value;
673 std::ostringstream os;
674 os << " Wav data_scale: " << data_scale << ", data_offset: " << data_offset;
675 info_msg (os.str().c_str());
679 m_nDataBytes = m_nSamples * m_nBytesPerSample * m_nChannels;
680 m_nFileBytes = m_nHeaderBytes + m_nDataBytes;
682 unsigned int nHeaderShortInts = m_nHeaderBytes / sizeof(signed short int);
684 m_data = new signed short int [m_nSamples + nHeaderShortInts];
685 signed short int* input = wdq_channel.m_data;
686 signed short int* output = &m_data[nHeaderShortInts];
687 double slope = wdq_channel.m_slope;
688 double intercept = wdq_channel.m_intercept;
690 if (! fill_header ())
695 for (i = 0; i < m_nSamples; i++) {
696 double value = input[i];
697 value = (slope * value) + intercept;
699 value = (value + data_offset) * data_scale;
700 value += 0.5 - 32768;
702 value = value * data_scale;
705 signed short int v = static_cast<signed short int>(value);
707 unsigned char* p = reinterpret_cast<unsigned char*>(&v);
708 unsigned char c = p[0]; p[0] = p[1]; p[1] = c;
728 put_int4 (char* p, unsigned int n)
731 *(p+1) = 0xFF & (n >> 8);
732 *(p+2) = 0xFF & (n >> 16);
733 *(p+3) = 0xFF & (n >> 24);
737 put_int2 (char* p, unsigned short int n)
740 *(p+1) = 0xFF & (n >> 8);
744 WavFile::fill_header ()
746 char* pData = reinterpret_cast<char*> (m_data);
748 strncpy (pData, "RIFF", 4);
750 // Length of file after 8 byte header
751 put_int4 (pData + 4, 36 + m_nDataBytes);
753 strncpy (pData + 8, "WAVEfmt ", 8);
755 // Length of header block
756 put_int4 (pData + 16, 0x10);
759 put_int2 (pData + 20, 1);
761 /* Number of channels */
762 put_int2 (pData + 22, m_nChannels);
765 put_int4 (pData + 24, static_cast<int> (m_rate + 0.5));
768 put_int4 (pData + 28, static_cast<int> (m_rate * m_nBytesPerSample + 0.5));
771 put_int2 (pData + 32, m_nBytesPerSample * m_nChannels);
774 put_int2 (pData + 34, m_nBitsPerSample);
776 strncpy (pData + 36, "data", 4);
778 put_int4 (pData + 40, m_nDataBytes);
784 WavFile::WriteFile ()
790 if ((m_fd = open (m_strFile.c_str(), O_WRONLY | O_BINARY | O_TRUNC | O_CREAT, g_fileMode)) == 0) {
791 std::ostringstream os;
792 os << "Error opening output file " << m_strFile.c_str();
793 error_msg (os.str().c_str());
797 lseek (m_fd, 0, SEEK_SET);
798 if (write (m_fd, m_data, m_nFileBytes) != m_nFileBytes) {
799 error_msg ("Error writing file");
803 if (close (m_fd) < 0)
804 error_msg ("Error closing output file");
812 #include <mmsystem.h>
814 #include <sys/ioctl.h>
815 #include <sys/soundcard.h>
822 if (PlaySound ((LPCSTR) m_data, 0, SND_MEMORY | SND_NODEFAULT))
826 if ((fd = open ("/dev/dsp",O_WRONLY)) == -1) {
827 error_msg ("Error opening /dev/dsp");
831 int format = AFMT_S16_LE;
832 if (ioctl (fd, SNDCTL_DSP_SETFMT, &format) == -1) {
833 error_msg ("Error setting DSP format");
834 close(fd); return false;
836 if (format != AFMT_S16_LE) {
837 error_msg ("DSP Format not set");
838 close(fd); return false;
841 unsigned int channels = m_nChannels;
842 if (ioctl (fd, SNDCTL_DSP_CHANNELS, &format) == -1) {
843 error_msg ("Error setting number of channels");
844 close(fd); return false;
846 if (channels != m_nChannels) {
847 error_msg ("Number of channels not set");
848 close(fd); return false;
851 unsigned int speed = static_cast<int>(m_rate + 0.5);
852 if (ioctl (fd, SNDCTL_DSP_SPEED, &speed) == -1) {
853 error_msg ("Error setting sample rate");
854 close(fd); return false;
856 if (speed != m_rate && ! g_quiet) {
857 std::ostringstream os;
858 os << "Warning: Sample rate set to " << speed << ", not " << m_rate;
859 error_msg (os.str().c_str());
862 if (write (fd, reinterpret_cast<char*>(m_data) + m_nHeaderBytes, m_nDataBytes) !=
864 error_msg ("Error writing audio samples");
865 close(fd); return false;