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 1.14 2003/01/21 19:52:20 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 1.14 2003/01/21 19:52:20 kevin Exp $";
32 bool g_verbose = false;
36 error_msg (const char *msg)
38 std::cerr << msg << "\n";
42 info_msg (const char* msg)
44 std::cout << msg << "\n";
48 info_msg_sans_newline (const char* msg)
54 fileBasename (const char* filename)
56 const char* p = strrchr (filename, '/');
57 return (p ? p + 1 : filename);
61 str_rm_tail (char *str, const char* const charlist)
65 for (i = strlen(str) - 1; i >= 0; i--)
66 if (strchr (charlist, str[i]) != NULL)
69 break; /* found non-specified char, all done */
75 str_wrm_tail (char *str)
77 return (str_rm_tail(str, "\b\t\n\r"));
82 usage (const char* progname)
84 std::cout << "usage: " << fileBasename (progname) << " [OPTIONS] <wdq-file> <channel-number> <wav-file>\n";
85 std::cout << "OPTIONS\n";
86 std::cout << " -p Play channel through audio system\n";
87 std::cout << " -q Supress all messages\n";
88 std::cout << " -v Verbose mode\n";
89 std::cout << " -d Debug mode\n";
90 std::cout << " -r Print program version\n";
91 std::cout << " -h Print this help message\n";
96 main (int argc, char *argv[])
101 const char* progname = argv[0];
103 while ((c = getopt (argc, argv, "rqvdph")) != -1) {
106 std::cout << "Version " << g_szIdStr << std::endl;
132 std::cerr << "Too many parameters\n";
137 char wdq_fname[MAX_INPUT_STR];
139 strncpy (wdq_fname, argv [0], MAX_INPUT_STR);
141 std::cout << "Enter input WinDAQ filename: ";
142 std::cin.getline (wdq_fname, MAX_INPUT_STR);
145 char channel_buf [MAX_INPUT_STR];
147 strncpy (channel_buf, argv[1], MAX_INPUT_STR);
149 std::cout << "Enter channel number: ";
150 std::cin.getline (channel_buf, MAX_INPUT_STR);
153 char *channel_endptr;
154 int channel = static_cast<int>(strtol (channel_buf, &channel_endptr, 10));
155 if (*channel_endptr != 0) {
156 std::ostringstream os;
157 os << "Error: Channel " << channel_buf << " is not an integer";
158 error_msg (os.str().c_str());
163 char wav_fname[MAX_INPUT_STR];
165 strncpy (wav_fname, argv[2], MAX_INPUT_STR);
167 std::cout << "Enter output wav filename: ";
168 std::cin.getline (wav_fname, MAX_INPUT_STR);
171 if (! wdq2wav (wdq_fname, channel, wav_fname, play))
178 wdq2wav (const char* wdq_fname, const int channel, const char *wav_fname, bool play)
180 WindaqFile wdq (wdq_fname);
182 if (! wdq.ReadHeader()) {
183 if (wdq.m_error.size()) {
184 std::ostringstream os;
185 os << "Error reading file " << wdq_fname << ": " << wdq.m_error.c_str();
186 error_msg (os.str().c_str());
188 std::ostringstream os;
189 os << "Error reading file " << wdq_fname;
190 error_msg (os.str().c_str());
194 if (! g_quiet || g_verbose || g_debug) {
195 std::ostringstream os1;
196 os1 << "File " << wdq_fname;
197 info_msg (os1.str().c_str());
198 std::ostringstream os2;
199 time_t time = wdq.m_time_acq_start;
200 struct tm* tm = gmtime (&time);
201 os2 << " Time File Creation: " << asctime(tm);
202 info_msg_sans_newline (os2.str().c_str());
203 std::ostringstream os3;
204 time = wdq.m_time_acq_stop;
206 os3 << " Time File Written: " << asctime(tm);
207 info_msg_sans_newline (os3.str().c_str());
208 std::ostringstream os4;
209 os4 << " Samples: " << wdq.m_nSamples <<
210 ", Channels: " << wdq.m_nChannels <<
211 ", Sample Rate: " << wdq.m_sample_rate;
212 info_msg (os4.str().c_str());
215 WindaqChannel wdq_channel (wdq, channel);
216 if (! wdq_channel.m_valid) {
217 error_msg ("Error reading data from channel");
221 if (! g_quiet || g_verbose || g_debug) {
222 std::ostringstream os1;
223 os1 << "Channel " << channel;
224 info_msg (os1.str().c_str());
225 std::ostringstream os2;
226 os2 << " Units: " << wdq_channel.m_units.c_str();
227 info_msg (os2.str().c_str());
228 std::ostringstream os3;
229 os3 << " Raw minimum: " << wdq_channel.m_min_raw_data <<
230 ", maximum: " << wdq_channel.m_max_raw_data;
231 info_msg (os3.str().c_str());
234 std::ostringstream os4;
235 os4 << " Scaled minimum: " << wdq_channel.m_min_scaled_data <<
236 ", maximum: " << wdq_channel.m_max_scaled_data;
237 info_msg (os4.str().c_str());
238 std::ostringstream os5;
239 os5 << " Slope " << wdq_channel.m_slope <<
240 ", Intercept " << wdq_channel.m_intercept;
241 info_msg (os5.str().c_str());
244 WavFile wav (wdq_channel, wav_fname);
247 error_msg ("Error extracting wav from channel");
251 if (! wav.WriteFile ()) {
252 error_msg ("Error writing file");
263 WindaqFile::WindaqFile (const char* fname)
264 : m_fd(0), m_nChannels(0), m_nSamples(0), m_sample_rate(0), m_valid(false),
269 WindaqFile::~WindaqFile ()
275 bool read_int2 (int fd, unsigned short int& n)
279 if (read (fd, &tmp1, 1) != 1)
282 if (read (fd, &tmp1, 1) != 1)
285 n = tmp2 + (tmp1 * 256);
289 bool read_int4 (int fd, unsigned int& n)
292 unsigned short int tmp2;
293 if (! read_int2 (fd, tmp2))
296 if (! read_int2 (fd, tmp2))
299 n = tmp4 + (tmp2 * 65536);
304 WindaqFile::ReadHeader ()
306 unsigned short int tmp2;
309 if ((m_fd = open (m_strFile.c_str(), O_RDONLY)) < 0) {
310 m_error = "Unable to open file";
314 lseek (0, 0, SEEK_SET);
315 if (! read_int2 (m_fd, tmp2))
318 m_nChannels = tmp2 & 0x1f;
319 m_sr_denom = (tmp2 & 0x7fff) >> 5;
320 m_sr_numer = (tmp2 & 0x8000) << 1;
322 if (! read_int2 (m_fd, tmp2))
326 m_sample_rate = (double) m_sr_numer / (double) (m_sr_denom * m_nChannels);
328 if (! read_int2 (m_fd, tmp2))
331 m_channel_offset = tmp2 & 0xFF;
332 m_nBytes_channel_header = tmp2 >> 8;
334 if (! read_int2 (m_fd, m_nHeader_bytes))
337 if (! read_int4 (m_fd, m_nData_bytes))
340 m_nSamples = (m_nData_bytes / m_nChannels) / 2;
342 lseek (m_fd, 36, SEEK_SET);
343 if (! read_int4 (m_fd, m_time_acq_start))
346 if (! read_int4 (m_fd, m_time_acq_stop))
349 // Verify Windaq signature
350 lseek (m_fd, m_nHeader_bytes - 2, SEEK_SET);
351 if (! read_int2 (m_fd, tmp2))
354 if (tmp2 != 0x8001) {
355 std::ostringstream os;
356 m_error = "File is not a valid WinDAQ file";
365 WindaqChannel::WindaqChannel (WindaqFile& wdq, const int channel)
366 : r_wdq(wdq), m_data(0), m_slope(0), m_intercept (0), m_channel(channel),
370 if (channel >= 1 && channel <= wdq.m_nChannels) {
371 if (read_channel_data())
374 std::ostringstream os;
375 os << "Channel " << channel << " is invalid, valid range 1-" <<
377 error_msg (os.str().c_str());
382 WindaqChannel::~WindaqChannel ()
388 bool get_float8 (int fd, double& f)
390 unsigned char buf[8];
391 if (read (fd, &buf, 8) != 8)
396 c = buf[0]; buf[0] = buf[7]; buf[7] = c;
397 c = buf[1]; buf[1] = buf[6]; buf[6] = c;
398 c = buf[2]; buf[2] = buf[5]; buf[5] = c;
399 c = buf[3]; buf[3] = buf[4]; buf[4] = c;
402 f = *(reinterpret_cast<double*>(buf));
408 WindaqChannel::read_channel_data ()
410 unsigned short int tmp2;
415 m_data = new signed short int [r_wdq.m_nSamples * 2];
417 lseek (fd, r_wdq.m_channel_offset + 8 +
418 (m_channel - 1) * r_wdq.m_nBytes_channel_header,
420 if (! get_float8 (fd, m_slope))
423 if (! get_float8 (fd, m_intercept))
428 if (read (fd, units, 6) != 6) {
429 error_msg ("Error reading file");
434 unsigned int row_bytes = 2 * r_wdq.m_nChannels;
435 signed short int sample_row [row_bytes];
437 signed short int* psample = &sample_row[m_channel - 1];
439 lseek (fd, r_wdq.m_nHeader_bytes, SEEK_SET);
441 signed short int data_max, data_min;
442 for (i = 0; i < r_wdq.m_nSamples; i++) {
443 if (read (fd, sample_row, row_bytes) != row_bytes) {
444 std::ostringstream os;
445 os << "Error reading file at " << i;
446 error_msg (os.str().c_str());
449 signed short int v = *psample;
452 unsigned char* p = reinterpret_cast<unsigned char*>(&v);
453 unsigned char c = p[0]; p[0] = p[1]; p[1] = c;
456 signed short int value = v >> 2;
463 if (value > data_max)
465 else if (value < data_min)
470 m_max_raw_data = data_max;
471 m_min_raw_data = data_min;
472 m_max_scaled_data = (m_slope * data_max) + m_intercept;
473 m_min_scaled_data = (m_slope * data_min) + m_intercept;
479 WavFile::WavFile (WindaqChannel& wdq_channel, const char* fname)
480 : m_valid(false), m_data(0), m_nSamples(0), m_strFile(fname), m_fd(0)
482 if (wdq_channel.m_valid) {
483 m_nSamples = wdq_channel.r_wdq.m_nSamples;
485 m_nBitsPerSample = 16;
486 m_nBytesPerSample = 2;
487 m_rate = wdq_channel.r_wdq.m_sample_rate;
489 double data_offset = -wdq_channel.m_min_scaled_data;
490 double data_scale = 0.;
491 if (wdq_channel.m_max_scaled_data != wdq_channel.m_min_scaled_data)
492 data_scale = 65535. / (wdq_channel.m_max_scaled_data -
493 wdq_channel.m_min_scaled_data);
496 std::ostringstream os;
497 os << " Wav data_scale: " << data_scale << ", data_offset: " << data_offset;
498 info_msg (os.str().c_str());
502 m_nDataBytes = m_nSamples * m_nBytesPerSample * m_nChannels;
503 m_nFileBytes = m_nHeaderBytes + m_nDataBytes;
505 unsigned int nHeaderShortInts = m_nHeaderBytes / sizeof(signed short int);
507 m_data = new signed short int [m_nSamples + nHeaderShortInts];
508 signed short int* input = wdq_channel.m_data;
509 signed short int* output = &m_data[nHeaderShortInts];
510 double slope = wdq_channel.m_slope;
511 double intercept = wdq_channel.m_intercept;
513 if (! fill_header ())
517 for (i = 0; i < m_nSamples; i++) {
518 double value = input[i];
519 value = (slope * value) + intercept;
520 value = (value + data_offset) * data_scale;
521 value += 0.5 - 32768;
522 signed short int v = static_cast<signed short int>(value);
524 unsigned char* p = reinterpret_cast<unsigned char*>(&v);
525 unsigned char c = p[0]; p[0] = p[1]; p[1] = c;
545 put_int4 (char* p, unsigned int n)
548 *(p+1) = 0xFF & (n >> 8);
549 *(p+2) = 0xFF & (n >> 16);
550 *(p+3) = 0xFF & (n >> 24);
554 put_int2 (char* p, unsigned short int n)
557 *(p+1) = 0xFF & (n >> 8);
561 WavFile::fill_header ()
563 char* pData = reinterpret_cast<char*> (m_data);
565 strncpy (pData, "RIFF", 4);
567 // Length of file after 8 byte header
568 put_int4 (pData + 4, 36 + m_nDataBytes);
570 strncpy (pData + 8, "WAVEfmt ", 8);
572 // Length of header block
573 put_int4 (pData + 16, 0x10);
576 put_int2 (pData + 20, 1);
578 /* Number of channels */
579 put_int2 (pData + 22, m_nChannels);
582 put_int4 (pData + 24, static_cast<int> (m_rate + 0.5));
585 put_int4 (pData + 28, static_cast<int> (m_rate * m_nBytesPerSample + 0.5));
588 put_int2 (pData + 32, m_nBytesPerSample * m_nChannels);
591 put_int2 (pData + 34, m_nBitsPerSample);
593 strncpy (pData + 36, "data", 4);
595 put_int4 (pData + 40, m_nDataBytes);
601 WavFile::WriteFile ()
603 unsigned short int tmp2;
610 if ((m_fd = open (m_strFile.c_str(), O_WRONLY | O_TRUNC | O_CREAT,
611 S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)) == 0) {
612 std::ostringstream os;
613 os << "Error opening output file " << m_strFile.c_str();
614 error_msg (os.str().c_str());
618 lseek (m_fd, 0, SEEK_SET);
619 if (write (m_fd, m_data, m_nFileBytes) != m_nFileBytes) {
620 error_msg ("Error writing file");
624 if (close (m_fd) < 0)
625 error_msg ("Error closing output file");
633 #include <mmsystem.h>
635 #include <sys/ioctl.h>
636 #include <sys/soundcard.h>
643 if (PlaySound ((LPCSTR) m_data, 0, SND_MEMORY | SND_NODEFAULT))
647 if ((fd = open ("/dev/dsp",O_WRONLY)) == -1) {
648 error_msg ("Error opening /dev/dsp");
652 int format = AFMT_S16_LE;
653 if (ioctl (fd, SNDCTL_DSP_SETFMT, &format) == -1) {
654 error_msg ("Error setting DSP format");
655 close(fd); return false;
657 if (format != AFMT_S16_LE) {
658 error_msg ("DSP Format not set");
659 close(fd); return false;
662 int channels = m_nChannels;
663 if (ioctl (fd, SNDCTL_DSP_CHANNELS, &format) == -1) {
664 error_msg ("Error setting number of channels");
665 close(fd); return false;
667 if (channels != m_nChannels) {
668 error_msg ("Number of channels not set");
669 close(fd); return false;
672 int speed = static_cast<int>(m_rate + 0.5);
673 if (ioctl (fd, SNDCTL_DSP_SPEED, &speed) == -1) {
674 error_msg ("Error setting sample rate");
675 close(fd); return false;
677 if (speed != m_rate && ! g_quiet) {
678 std::ostringstream os;
679 os << "Warning: Sample rate set to " << speed << ", not " << m_rate;
680 error_msg (os.str().c_str());
683 if (write (fd, reinterpret_cast<char*>(m_data) + m_nHeaderBytes, m_nDataBytes) !=
685 error_msg ("Error writing audio samples");
686 close(fd); return false;