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 ** $Id: wdq2wav.cpp,v 1.16 2003/02/12 07:24:32 kevin Exp $
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: wdq2wav.cpp,v 1.16 2003/02/12 07:24:32 kevin Exp $";
32 bool g_verbose = 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 << "\n";
66 info_msg (const char* msg)
68 std::cout << msg << "\n";
72 info_msg_sans_newline (const char* msg)
78 fileBasename (const char* filename)
80 const char* p = strrchr (filename, '/');
81 return (p ? p + 1 : filename);
85 str_rm_tail (char *str, const char* const charlist)
89 for (i = strlen(str) - 1; i >= 0; i--)
90 if (strchr (charlist, str[i]) != NULL)
93 break; /* found non-specified char, all done */
99 str_wrm_tail (char *str)
101 return (str_rm_tail(str, "\b\t\n\r"));
106 usage (const char* progname)
108 std::cout << "usage: " << fileBasename (progname) << " [OPTIONS] <wdq-file> <channel-number> <wav-file>\n";
109 std::cout << "OPTIONS\n";
110 std::cout << " -p Play channel through audio system\n";
111 std::cout << " -q Supress all messages\n";
112 std::cout << " -v Verbose mode\n";
113 std::cout << " -d Debug mode\n";
114 std::cout << " -r Print program version\n";
115 std::cout << " -h Print this help message\n";
120 main (int argc, char *argv[])
125 const char* progname = argv[0];
127 while ((c = getopt (argc, argv, "rqvdph")) != -1) {
130 std::cout << "Version " << g_szIdStr << std::endl;
156 std::cerr << "Too many parameters\n";
161 char wdq_fname[MAX_INPUT_STR];
163 strncpy (wdq_fname, argv [0], MAX_INPUT_STR);
165 std::cout << "Enter input WinDAQ filename: ";
166 std::cin.getline (wdq_fname, MAX_INPUT_STR);
169 char channel_buf [MAX_INPUT_STR];
171 strncpy (channel_buf, argv[1], MAX_INPUT_STR);
173 std::cout << "Enter channel number: ";
174 std::cin.getline (channel_buf, MAX_INPUT_STR);
177 char *channel_endptr;
178 int channel = static_cast<int>(strtol (channel_buf, &channel_endptr, 10));
179 if (*channel_endptr != 0) {
180 std::ostringstream os;
181 os << "Error: Channel " << channel_buf << " is not an integer";
182 error_msg (os.str().c_str());
187 char wav_fname[MAX_INPUT_STR];
189 strncpy (wav_fname, argv[2], MAX_INPUT_STR);
191 std::cout << "Enter output wav filename: ";
192 std::cin.getline (wav_fname, MAX_INPUT_STR);
195 if (! wdq2wav (wdq_fname, channel, wav_fname, play))
202 wdq2wav (const char* wdq_fname, const int channel, const char *wav_fname, bool play)
204 WindaqFile wdq (wdq_fname);
206 if (! wdq.ReadHeader()) {
207 if (wdq.m_error.size()) {
208 std::ostringstream os;
209 os << "Error reading file " << wdq_fname << ": " << wdq.m_error.c_str();
210 error_msg (os.str().c_str());
212 std::ostringstream os;
213 os << "Error reading file " << wdq_fname;
214 error_msg (os.str().c_str());
218 if (! g_quiet || g_verbose || g_debug) {
219 std::ostringstream os1;
220 os1 << "File " << wdq_fname;
221 info_msg (os1.str().c_str());
222 std::ostringstream os2;
223 time_t time = wdq.m_time_acq_start;
224 struct tm* tm = gmtime (&time);
225 os2 << " Time File Creation: " << asctime(tm);
226 info_msg_sans_newline (os2.str().c_str());
227 std::ostringstream os3;
228 time = wdq.m_time_acq_stop;
230 os3 << " Time File Written: " << asctime(tm);
231 info_msg_sans_newline (os3.str().c_str());
232 std::ostringstream os4;
233 os4 << " Samples: " << wdq.m_nSamples <<
234 ", Channels: " << wdq.m_nChannels <<
235 ", Sample Rate: " << wdq.m_sample_rate;
236 info_msg (os4.str().c_str());
239 WindaqChannel wdq_channel (wdq, channel);
240 if (! wdq_channel.m_valid) {
241 error_msg ("Error reading data from channel");
245 if (! g_quiet || g_verbose || g_debug) {
246 std::ostringstream os1;
247 os1 << "Channel " << channel;
248 info_msg (os1.str().c_str());
249 std::ostringstream os2;
250 os2 << " Units: " << wdq_channel.m_units.c_str();
251 info_msg (os2.str().c_str());
252 std::ostringstream os3;
253 os3 << " Raw minimum: " << wdq_channel.m_min_raw_data <<
254 ", maximum: " << wdq_channel.m_max_raw_data;
255 info_msg (os3.str().c_str());
258 std::ostringstream os4;
259 os4 << " Scaled minimum: " << wdq_channel.m_min_scaled_data <<
260 ", maximum: " << wdq_channel.m_max_scaled_data;
261 info_msg (os4.str().c_str());
262 std::ostringstream os5;
263 os5 << " Slope " << wdq_channel.m_slope <<
264 ", Intercept " << wdq_channel.m_intercept;
265 info_msg (os5.str().c_str());
268 WavFile wav (wdq_channel, wav_fname);
271 error_msg ("Error extracting wav from channel");
275 if (! wav.WriteFile ()) {
276 error_msg ("Error writing file");
287 WindaqFile::WindaqFile (const char* fname)
288 : m_fd(0), m_nChannels(0), m_nSamples(0), m_sample_rate(0), m_valid(false),
293 WindaqFile::~WindaqFile ()
299 bool read_int2 (int fd, unsigned short int& n)
303 if (read (fd, &tmp1, 1) != 1)
306 if (read (fd, &tmp1, 1) != 1)
309 n = tmp2 + (tmp1 * 256);
313 bool read_int4 (int fd, unsigned int& n)
316 unsigned short int tmp2;
317 if (! read_int2 (fd, tmp2))
320 if (! read_int2 (fd, tmp2))
323 n = tmp4 + (tmp2 * 65536);
328 WindaqFile::ReadHeader ()
330 unsigned short int tmp2;
333 if ((m_fd = open (m_strFile.c_str(), O_RDONLY | O_BINARY)) < 0) {
334 m_error = "Unable to open file";
338 lseek (0, 0, SEEK_SET);
339 if (! read_int2 (m_fd, tmp2))
342 m_nChannels = tmp2 & 0x1f;
343 m_sr_denom = (tmp2 & 0x7fff) >> 5;
344 m_sr_numer = (tmp2 & 0x8000) << 1;
346 if (! read_int2 (m_fd, tmp2))
350 m_sample_rate = (double) m_sr_numer / (double) (m_sr_denom * m_nChannels);
352 if (! read_int2 (m_fd, tmp2))
355 m_channel_offset = tmp2 & 0xFF;
356 m_nBytes_channel_header = tmp2 >> 8;
358 if (! read_int2 (m_fd, m_nHeader_bytes))
361 if (! read_int4 (m_fd, m_nData_bytes))
364 m_nSamples = (m_nData_bytes / m_nChannels) / 2;
366 lseek (m_fd, 36, SEEK_SET);
367 if (! read_int4 (m_fd, m_time_acq_start))
370 if (! read_int4 (m_fd, m_time_acq_stop))
373 // Verify Windaq signature
374 lseek (m_fd, m_nHeader_bytes - 2, SEEK_SET);
375 if (! read_int2 (m_fd, tmp2))
378 if (tmp2 != 0x8001) {
379 std::ostringstream os;
380 m_error = "File is not a valid WinDAQ file";
389 WindaqChannel::WindaqChannel (WindaqFile& wdq, const int channel)
390 : r_wdq(wdq), m_data(0), m_slope(0), m_intercept (0), m_channel(channel),
394 if (channel >= 1 && channel <= wdq.m_nChannels) {
395 if (read_channel_data())
398 std::ostringstream os;
399 os << "Channel " << channel << " is invalid, valid range 1-" <<
401 error_msg (os.str().c_str());
406 WindaqChannel::~WindaqChannel ()
412 bool get_float8 (int fd, double& f)
414 unsigned char buf[8];
415 if (read (fd, &buf, 8) != 8)
420 c = buf[0]; buf[0] = buf[7]; buf[7] = c;
421 c = buf[1]; buf[1] = buf[6]; buf[6] = c;
422 c = buf[2]; buf[2] = buf[5]; buf[5] = c;
423 c = buf[3]; buf[3] = buf[4]; buf[4] = c;
426 f = *(reinterpret_cast<double*>(buf));
432 WindaqChannel::read_channel_data ()
434 unsigned short int tmp2;
439 m_data = new signed short int [r_wdq.m_nSamples * 2];
441 lseek (fd, r_wdq.m_channel_offset + 8 +
442 (m_channel - 1) * r_wdq.m_nBytes_channel_header,
444 if (! get_float8 (fd, m_slope))
447 if (! get_float8 (fd, m_intercept))
452 if (read (fd, units, 6) != 6) {
453 error_msg ("Error reading file");
458 unsigned int row_bytes = 2 * r_wdq.m_nChannels;
459 signed short int *sample_row = new signed short int [row_bytes];
461 signed short int* psample = &sample_row[m_channel - 1];
463 lseek (fd, r_wdq.m_nHeader_bytes, SEEK_SET);
465 signed short int data_max, data_min;
466 for (i = 0; i < r_wdq.m_nSamples; i++) {
467 if (read (fd, sample_row, row_bytes) != row_bytes) {
468 std::ostringstream os;
469 os << "Error reading file at " << i;
470 error_msg (os.str().c_str());
474 signed short int v = *psample;
477 unsigned char* p = reinterpret_cast<unsigned char*>(&v);
478 unsigned char c = p[0]; p[0] = p[1]; p[1] = c;
481 signed short int value = v >> 2;
488 if (value > data_max)
490 else if (value < data_min)
495 m_max_raw_data = data_max;
496 m_min_raw_data = data_min;
497 m_max_scaled_data = (m_slope * data_max) + m_intercept;
498 m_min_scaled_data = (m_slope * data_min) + m_intercept;
505 WavFile::WavFile (WindaqChannel& wdq_channel, const char* fname)
506 : m_valid(false), m_data(0), m_nSamples(0), m_strFile(fname), m_fd(0)
508 if (wdq_channel.m_valid) {
509 m_nSamples = wdq_channel.r_wdq.m_nSamples;
511 m_nBitsPerSample = 16;
512 m_nBytesPerSample = 2;
513 m_rate = wdq_channel.r_wdq.m_sample_rate;
515 double data_offset = -wdq_channel.m_min_scaled_data;
516 double data_scale = 0.;
517 if (wdq_channel.m_max_scaled_data != wdq_channel.m_min_scaled_data)
518 data_scale = 65535. / (wdq_channel.m_max_scaled_data -
519 wdq_channel.m_min_scaled_data);
522 std::ostringstream os;
523 os << " Wav data_scale: " << data_scale << ", data_offset: " << data_offset;
524 info_msg (os.str().c_str());
528 m_nDataBytes = m_nSamples * m_nBytesPerSample * m_nChannels;
529 m_nFileBytes = m_nHeaderBytes + m_nDataBytes;
531 unsigned int nHeaderShortInts = m_nHeaderBytes / sizeof(signed short int);
533 m_data = new signed short int [m_nSamples + nHeaderShortInts];
534 signed short int* input = wdq_channel.m_data;
535 signed short int* output = &m_data[nHeaderShortInts];
536 double slope = wdq_channel.m_slope;
537 double intercept = wdq_channel.m_intercept;
539 if (! fill_header ())
543 for (i = 0; i < m_nSamples; i++) {
544 double value = input[i];
545 value = (slope * value) + intercept;
546 value = (value + data_offset) * data_scale;
547 value += 0.5 - 32768;
548 signed short int v = static_cast<signed short int>(value);
550 unsigned char* p = reinterpret_cast<unsigned char*>(&v);
551 unsigned char c = p[0]; p[0] = p[1]; p[1] = c;
571 put_int4 (char* p, unsigned int n)
574 *(p+1) = 0xFF & (n >> 8);
575 *(p+2) = 0xFF & (n >> 16);
576 *(p+3) = 0xFF & (n >> 24);
580 put_int2 (char* p, unsigned short int n)
583 *(p+1) = 0xFF & (n >> 8);
587 WavFile::fill_header ()
589 char* pData = reinterpret_cast<char*> (m_data);
591 strncpy (pData, "RIFF", 4);
593 // Length of file after 8 byte header
594 put_int4 (pData + 4, 36 + m_nDataBytes);
596 strncpy (pData + 8, "WAVEfmt ", 8);
598 // Length of header block
599 put_int4 (pData + 16, 0x10);
602 put_int2 (pData + 20, 1);
604 /* Number of channels */
605 put_int2 (pData + 22, m_nChannels);
608 put_int4 (pData + 24, static_cast<int> (m_rate + 0.5));
611 put_int4 (pData + 28, static_cast<int> (m_rate * m_nBytesPerSample + 0.5));
614 put_int2 (pData + 32, m_nBytesPerSample * m_nChannels);
617 put_int2 (pData + 34, m_nBitsPerSample);
619 strncpy (pData + 36, "data", 4);
621 put_int4 (pData + 40, m_nDataBytes);
627 WavFile::WriteFile ()
629 unsigned short int tmp2;
636 if ((m_fd = open (m_strFile.c_str(), O_WRONLY | O_BINARY | O_TRUNC | O_CREAT, g_fileMode)) == 0) {
637 std::ostringstream os;
638 os << "Error opening output file " << m_strFile.c_str();
639 error_msg (os.str().c_str());
643 lseek (m_fd, 0, SEEK_SET);
644 if (write (m_fd, m_data, m_nFileBytes) != m_nFileBytes) {
645 error_msg ("Error writing file");
649 if (close (m_fd) < 0)
650 error_msg ("Error closing output file");
658 #include <mmsystem.h>
660 #include <sys/ioctl.h>
661 #include <sys/soundcard.h>
668 if (PlaySound ((LPCSTR) m_data, 0, SND_MEMORY | SND_NODEFAULT))
672 if ((fd = open ("/dev/dsp",O_WRONLY)) == -1) {
673 error_msg ("Error opening /dev/dsp");
677 int format = AFMT_S16_LE;
678 if (ioctl (fd, SNDCTL_DSP_SETFMT, &format) == -1) {
679 error_msg ("Error setting DSP format");
680 close(fd); return false;
682 if (format != AFMT_S16_LE) {
683 error_msg ("DSP Format not set");
684 close(fd); return false;
687 int channels = m_nChannels;
688 if (ioctl (fd, SNDCTL_DSP_CHANNELS, &format) == -1) {
689 error_msg ("Error setting number of channels");
690 close(fd); return false;
692 if (channels != m_nChannels) {
693 error_msg ("Number of channels not set");
694 close(fd); return false;
697 int speed = static_cast<int>(m_rate + 0.5);
698 if (ioctl (fd, SNDCTL_DSP_SPEED, &speed) == -1) {
699 error_msg ("Error setting sample rate");
700 close(fd); return false;
702 if (speed != m_rate && ! g_quiet) {
703 std::ostringstream os;
704 os << "Warning: Sample rate set to " << speed << ", not " << m_rate;
705 error_msg (os.str().c_str());
708 if (write (fd, reinterpret_cast<char*>(m_data) + m_nHeaderBytes, m_nDataBytes) !=
710 error_msg ("Error writing audio samples");
711 close(fd); return false;