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 1.15 2003/02/12 06:10:19 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 1.15 2003/02/12 06:10:19 kevin Exp $";
32 bool g_verbose = false;
35 // Define as NULL for non-Windows platforms
42 error_msg (const char *msg)
44 std::cerr << msg << "\n";
48 info_msg (const char* msg)
50 std::cout << msg << "\n";
54 info_msg_sans_newline (const char* msg)
60 fileBasename (const char* filename)
62 const char* p = strrchr (filename, '/');
63 return (p ? p + 1 : filename);
67 str_rm_tail (char *str, const char* const charlist)
71 for (i = strlen(str) - 1; i >= 0; i--)
72 if (strchr (charlist, str[i]) != NULL)
75 break; /* found non-specified char, all done */
81 str_wrm_tail (char *str)
83 return (str_rm_tail(str, "\b\t\n\r"));
88 usage (const char* progname)
90 std::cout << "usage: " << fileBasename (progname) << " [OPTIONS] <wdq-file> <channel-number> <wav-file>\n";
91 std::cout << "OPTIONS\n";
92 std::cout << " -p Play channel through audio system\n";
93 std::cout << " -q Supress all messages\n";
94 std::cout << " -v Verbose mode\n";
95 std::cout << " -d Debug mode\n";
96 std::cout << " -r Print program version\n";
97 std::cout << " -h Print this help message\n";
102 main (int argc, char *argv[])
107 const char* progname = argv[0];
109 while ((c = getopt (argc, argv, "rqvdph")) != -1) {
112 std::cout << "Version " << g_szIdStr << std::endl;
138 std::cerr << "Too many parameters\n";
143 char wdq_fname[MAX_INPUT_STR];
145 strncpy (wdq_fname, argv [0], MAX_INPUT_STR);
147 std::cout << "Enter input WinDAQ filename: ";
148 std::cin.getline (wdq_fname, MAX_INPUT_STR);
151 char channel_buf [MAX_INPUT_STR];
153 strncpy (channel_buf, argv[1], MAX_INPUT_STR);
155 std::cout << "Enter channel number: ";
156 std::cin.getline (channel_buf, MAX_INPUT_STR);
159 char *channel_endptr;
160 int channel = static_cast<int>(strtol (channel_buf, &channel_endptr, 10));
161 if (*channel_endptr != 0) {
162 std::ostringstream os;
163 os << "Error: Channel " << channel_buf << " is not an integer";
164 error_msg (os.str().c_str());
169 char wav_fname[MAX_INPUT_STR];
171 strncpy (wav_fname, argv[2], MAX_INPUT_STR);
173 std::cout << "Enter output wav filename: ";
174 std::cin.getline (wav_fname, MAX_INPUT_STR);
177 if (! wdq2wav (wdq_fname, channel, wav_fname, play))
184 wdq2wav (const char* wdq_fname, const int channel, const char *wav_fname, bool play)
186 WindaqFile wdq (wdq_fname);
188 if (! wdq.ReadHeader()) {
189 if (wdq.m_error.size()) {
190 std::ostringstream os;
191 os << "Error reading file " << wdq_fname << ": " << wdq.m_error.c_str();
192 error_msg (os.str().c_str());
194 std::ostringstream os;
195 os << "Error reading file " << wdq_fname;
196 error_msg (os.str().c_str());
200 if (! g_quiet || g_verbose || g_debug) {
201 std::ostringstream os1;
202 os1 << "File " << wdq_fname;
203 info_msg (os1.str().c_str());
204 std::ostringstream os2;
205 time_t time = wdq.m_time_acq_start;
206 struct tm* tm = gmtime (&time);
207 os2 << " Time File Creation: " << asctime(tm);
208 info_msg_sans_newline (os2.str().c_str());
209 std::ostringstream os3;
210 time = wdq.m_time_acq_stop;
212 os3 << " Time File Written: " << asctime(tm);
213 info_msg_sans_newline (os3.str().c_str());
214 std::ostringstream os4;
215 os4 << " Samples: " << wdq.m_nSamples <<
216 ", Channels: " << wdq.m_nChannels <<
217 ", Sample Rate: " << wdq.m_sample_rate;
218 info_msg (os4.str().c_str());
221 WindaqChannel wdq_channel (wdq, channel);
222 if (! wdq_channel.m_valid) {
223 error_msg ("Error reading data from channel");
227 if (! g_quiet || g_verbose || g_debug) {
228 std::ostringstream os1;
229 os1 << "Channel " << channel;
230 info_msg (os1.str().c_str());
231 std::ostringstream os2;
232 os2 << " Units: " << wdq_channel.m_units.c_str();
233 info_msg (os2.str().c_str());
234 std::ostringstream os3;
235 os3 << " Raw minimum: " << wdq_channel.m_min_raw_data <<
236 ", maximum: " << wdq_channel.m_max_raw_data;
237 info_msg (os3.str().c_str());
240 std::ostringstream os4;
241 os4 << " Scaled minimum: " << wdq_channel.m_min_scaled_data <<
242 ", maximum: " << wdq_channel.m_max_scaled_data;
243 info_msg (os4.str().c_str());
244 std::ostringstream os5;
245 os5 << " Slope " << wdq_channel.m_slope <<
246 ", Intercept " << wdq_channel.m_intercept;
247 info_msg (os5.str().c_str());
250 WavFile wav (wdq_channel, wav_fname);
253 error_msg ("Error extracting wav from channel");
257 if (! wav.WriteFile ()) {
258 error_msg ("Error writing file");
269 WindaqFile::WindaqFile (const char* fname)
270 : m_fd(0), m_nChannels(0), m_nSamples(0), m_sample_rate(0), m_valid(false),
275 WindaqFile::~WindaqFile ()
281 bool read_int2 (int fd, unsigned short int& n)
285 if (read (fd, &tmp1, 1) != 1)
288 if (read (fd, &tmp1, 1) != 1)
291 n = tmp2 + (tmp1 * 256);
295 bool read_int4 (int fd, unsigned int& n)
298 unsigned short int tmp2;
299 if (! read_int2 (fd, tmp2))
302 if (! read_int2 (fd, tmp2))
305 n = tmp4 + (tmp2 * 65536);
310 WindaqFile::ReadHeader ()
312 unsigned short int tmp2;
315 if ((m_fd = open (m_strFile.c_str(), O_RDONLY | O_BINARY)) < 0) {
316 m_error = "Unable to open file";
320 lseek (0, 0, SEEK_SET);
321 if (! read_int2 (m_fd, tmp2))
324 m_nChannels = tmp2 & 0x1f;
325 m_sr_denom = (tmp2 & 0x7fff) >> 5;
326 m_sr_numer = (tmp2 & 0x8000) << 1;
328 if (! read_int2 (m_fd, tmp2))
332 m_sample_rate = (double) m_sr_numer / (double) (m_sr_denom * m_nChannels);
334 if (! read_int2 (m_fd, tmp2))
337 m_channel_offset = tmp2 & 0xFF;
338 m_nBytes_channel_header = tmp2 >> 8;
340 if (! read_int2 (m_fd, m_nHeader_bytes))
343 if (! read_int4 (m_fd, m_nData_bytes))
346 m_nSamples = (m_nData_bytes / m_nChannels) / 2;
348 lseek (m_fd, 36, SEEK_SET);
349 if (! read_int4 (m_fd, m_time_acq_start))
352 if (! read_int4 (m_fd, m_time_acq_stop))
355 // Verify Windaq signature
356 lseek (m_fd, m_nHeader_bytes - 2, SEEK_SET);
357 if (! read_int2 (m_fd, tmp2))
360 if (tmp2 != 0x8001) {
361 std::ostringstream os;
362 m_error = "File is not a valid WinDAQ file";
371 WindaqChannel::WindaqChannel (WindaqFile& wdq, const int channel)
372 : r_wdq(wdq), m_data(0), m_slope(0), m_intercept (0), m_channel(channel),
376 if (channel >= 1 && channel <= wdq.m_nChannels) {
377 if (read_channel_data())
380 std::ostringstream os;
381 os << "Channel " << channel << " is invalid, valid range 1-" <<
383 error_msg (os.str().c_str());
388 WindaqChannel::~WindaqChannel ()
394 bool get_float8 (int fd, double& f)
396 unsigned char buf[8];
397 if (read (fd, &buf, 8) != 8)
402 c = buf[0]; buf[0] = buf[7]; buf[7] = c;
403 c = buf[1]; buf[1] = buf[6]; buf[6] = c;
404 c = buf[2]; buf[2] = buf[5]; buf[5] = c;
405 c = buf[3]; buf[3] = buf[4]; buf[4] = c;
408 f = *(reinterpret_cast<double*>(buf));
414 WindaqChannel::read_channel_data ()
416 unsigned short int tmp2;
421 m_data = new signed short int [r_wdq.m_nSamples * 2];
423 lseek (fd, r_wdq.m_channel_offset + 8 +
424 (m_channel - 1) * r_wdq.m_nBytes_channel_header,
426 if (! get_float8 (fd, m_slope))
429 if (! get_float8 (fd, m_intercept))
434 if (read (fd, units, 6) != 6) {
435 error_msg ("Error reading file");
440 unsigned int row_bytes = 2 * r_wdq.m_nChannels;
441 signed short int sample_row [row_bytes];
443 signed short int* psample = &sample_row[m_channel - 1];
445 lseek (fd, r_wdq.m_nHeader_bytes, SEEK_SET);
447 signed short int data_max, data_min;
448 for (i = 0; i < r_wdq.m_nSamples; i++) {
449 if (read (fd, sample_row, row_bytes) != row_bytes) {
450 std::ostringstream os;
451 os << "Error reading file at " << i;
452 error_msg (os.str().c_str());
455 signed short int v = *psample;
458 unsigned char* p = reinterpret_cast<unsigned char*>(&v);
459 unsigned char c = p[0]; p[0] = p[1]; p[1] = c;
462 signed short int value = v >> 2;
469 if (value > data_max)
471 else if (value < data_min)
476 m_max_raw_data = data_max;
477 m_min_raw_data = data_min;
478 m_max_scaled_data = (m_slope * data_max) + m_intercept;
479 m_min_scaled_data = (m_slope * data_min) + m_intercept;
485 WavFile::WavFile (WindaqChannel& wdq_channel, const char* fname)
486 : m_valid(false), m_data(0), m_nSamples(0), m_strFile(fname), m_fd(0)
488 if (wdq_channel.m_valid) {
489 m_nSamples = wdq_channel.r_wdq.m_nSamples;
491 m_nBitsPerSample = 16;
492 m_nBytesPerSample = 2;
493 m_rate = wdq_channel.r_wdq.m_sample_rate;
495 double data_offset = -wdq_channel.m_min_scaled_data;
496 double data_scale = 0.;
497 if (wdq_channel.m_max_scaled_data != wdq_channel.m_min_scaled_data)
498 data_scale = 65535. / (wdq_channel.m_max_scaled_data -
499 wdq_channel.m_min_scaled_data);
502 std::ostringstream os;
503 os << " Wav data_scale: " << data_scale << ", data_offset: " << data_offset;
504 info_msg (os.str().c_str());
508 m_nDataBytes = m_nSamples * m_nBytesPerSample * m_nChannels;
509 m_nFileBytes = m_nHeaderBytes + m_nDataBytes;
511 unsigned int nHeaderShortInts = m_nHeaderBytes / sizeof(signed short int);
513 m_data = new signed short int [m_nSamples + nHeaderShortInts];
514 signed short int* input = wdq_channel.m_data;
515 signed short int* output = &m_data[nHeaderShortInts];
516 double slope = wdq_channel.m_slope;
517 double intercept = wdq_channel.m_intercept;
519 if (! fill_header ())
523 for (i = 0; i < m_nSamples; i++) {
524 double value = input[i];
525 value = (slope * value) + intercept;
526 value = (value + data_offset) * data_scale;
527 value += 0.5 - 32768;
528 signed short int v = static_cast<signed short int>(value);
530 unsigned char* p = reinterpret_cast<unsigned char*>(&v);
531 unsigned char c = p[0]; p[0] = p[1]; p[1] = c;
551 put_int4 (char* p, unsigned int n)
554 *(p+1) = 0xFF & (n >> 8);
555 *(p+2) = 0xFF & (n >> 16);
556 *(p+3) = 0xFF & (n >> 24);
560 put_int2 (char* p, unsigned short int n)
563 *(p+1) = 0xFF & (n >> 8);
567 WavFile::fill_header ()
569 char* pData = reinterpret_cast<char*> (m_data);
571 strncpy (pData, "RIFF", 4);
573 // Length of file after 8 byte header
574 put_int4 (pData + 4, 36 + m_nDataBytes);
576 strncpy (pData + 8, "WAVEfmt ", 8);
578 // Length of header block
579 put_int4 (pData + 16, 0x10);
582 put_int2 (pData + 20, 1);
584 /* Number of channels */
585 put_int2 (pData + 22, m_nChannels);
588 put_int4 (pData + 24, static_cast<int> (m_rate + 0.5));
591 put_int4 (pData + 28, static_cast<int> (m_rate * m_nBytesPerSample + 0.5));
594 put_int2 (pData + 32, m_nBytesPerSample * m_nChannels);
597 put_int2 (pData + 34, m_nBitsPerSample);
599 strncpy (pData + 36, "data", 4);
601 put_int4 (pData + 40, m_nDataBytes);
607 WavFile::WriteFile ()
609 unsigned short int tmp2;
616 if ((m_fd = open (m_strFile.c_str(), O_WRONLY | O_BINARY | O_TRUNC | O_CREAT,
617 S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)) == 0) {
618 std::ostringstream os;
619 os << "Error opening output file " << m_strFile.c_str();
620 error_msg (os.str().c_str());
624 lseek (m_fd, 0, SEEK_SET);
625 if (write (m_fd, m_data, m_nFileBytes) != m_nFileBytes) {
626 error_msg ("Error writing file");
630 if (close (m_fd) < 0)
631 error_msg ("Error closing output file");
639 #include <mmsystem.h>
641 #include <sys/ioctl.h>
642 #include <sys/soundcard.h>
649 if (PlaySound ((LPCSTR) m_data, 0, SND_MEMORY | SND_NODEFAULT))
653 if ((fd = open ("/dev/dsp",O_WRONLY)) == -1) {
654 error_msg ("Error opening /dev/dsp");
658 int format = AFMT_S16_LE;
659 if (ioctl (fd, SNDCTL_DSP_SETFMT, &format) == -1) {
660 error_msg ("Error setting DSP format");
661 close(fd); return false;
663 if (format != AFMT_S16_LE) {
664 error_msg ("DSP Format not set");
665 close(fd); return false;
668 int channels = m_nChannels;
669 if (ioctl (fd, SNDCTL_DSP_CHANNELS, &format) == -1) {
670 error_msg ("Error setting number of channels");
671 close(fd); return false;
673 if (channels != m_nChannels) {
674 error_msg ("Number of channels not set");
675 close(fd); return false;
678 int speed = static_cast<int>(m_rate + 0.5);
679 if (ioctl (fd, SNDCTL_DSP_SPEED, &speed) == -1) {
680 error_msg ("Error setting sample rate");
681 close(fd); return false;
683 if (speed != m_rate && ! g_quiet) {
684 std::ostringstream os;
685 os << "Warning: Sample rate set to " << speed << ", not " << m_rate;
686 error_msg (os.str().c_str());
689 if (write (fd, reinterpret_cast<char*>(m_data) + m_nHeaderBytes, m_nDataBytes) !=
691 error_msg ("Error writing audio samples");
692 close(fd); return false;