X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=wdq2wav.cpp;h=39b5a81c693ce2a0e87ae2efffe7c02cf471c89b;hb=840065346d956999b0c3fb51da509695060b085b;hp=c912b8d65386a255d1a474f071f7f620b7c6c4a0;hpb=8dc7e54b7472b8422486c104b5b256b3554fc386;p=wdq2wav.git diff --git a/wdq2wav.cpp b/wdq2wav.cpp index c912b8d..39b5a81 100644 --- a/wdq2wav.cpp +++ b/wdq2wav.cpp @@ -8,7 +8,7 @@ ** ** Copyright (c) 2003 Kevin Rosenberg ** -** $Id: wdq2wav.cpp,v 1.24 2003/02/25 18:19:45 kevin Exp $ +** $Id$ ** ** This program is free software; you can redistribute it and/or modify ** it under the terms of the GNU General Public License (version 2) as @@ -26,13 +26,13 @@ #include -const char* g_szIdStr = "$Id: wdq2wav.cpp,v 1.24 2003/02/25 18:19:45 kevin Exp $"; +const char* g_szIdStr = "$Id$"; bool g_quiet = false; bool g_verbose = false; bool g_debug = false; bool g_ignore_zero = false; -bool g_demean = false; +bool g_dont_demean = false; #ifdef WIN32 @@ -79,8 +79,15 @@ info_msg_sans_newline (const char* msg) const char* fileBasename (const char* filename) { - const char* p = strrchr (filename, '/'); - return (p ? p + 1 : filename); + const char* pslash = strrchr (filename, '/'); + const char* pbackslash = strrchr (filename, '\\'); + const char* p = filename; + if (pbackslash && (! pslash || pbackslash >= pslash)) + p = pbackslash+1; + else if (pslash && (! pbackslash || pslash >= pbackslash)) + p = pslash+1; + + return p; } char * @@ -111,11 +118,11 @@ usage (const char* progname) std::cout << "OPTIONS\n"; std::cout << " -p Play channel through audio system\n"; std::cout << " -q Supress all messages\n"; - std::cout << " -z Scale output without regard for windaq zero point\n"; - std::cout << " -m Demean the data (subtract the mean value from each sample)\n"; + std::cout << " -z Scale output without preserving zero point\n"; + std::cout << " -m Do not demean the data (don't subtract the mean value from each sample)\n"; std::cout << " -v Verbose mode\n"; std::cout << " -d Debug mode\n"; - std::cout << " -r Print program version\n"; + std::cout << " -r Print program version and exit\n"; std::cout << " -h Print this help message\n"; } @@ -132,12 +139,16 @@ main (int argc, char *argv[]) switch (c) { case 'r': std::cout << "Version " << g_szIdStr << std::endl; + exit(0); break; case 'q': g_quiet = true; break; case 'm': - g_demean = true; + g_dont_demean = true; + break; + case 'z': + g_ignore_zero = true; break; case 'v': g_verbose = true; @@ -148,9 +159,6 @@ main (int argc, char *argv[]) case 'p': play = true; break; - case 'z': - g_ignore_zero = true; - break; case 'h': usage (progname); return (0); @@ -160,6 +168,10 @@ main (int argc, char *argv[]) return (1); } } + + if (g_verbose || g_debug) + std::cout << "Version " << g_szIdStr << std::endl; + argc -= optind; argv += optind; if (argc > 3) { @@ -225,10 +237,26 @@ wdq2wav (const char* wdq_fname, const int channel, const char *wav_fname, bool p } return false; } + + if (wdq.any_packed_channels()) { + std::ostringstream os; + os << "File contains 'packed' channels." << std::endl; + os << "Convert to 'Advanced CODAS headers' before processing with wdq2wav."; + error_msg (os.str().c_str()); + return false; + } + if (! g_quiet || g_verbose || g_debug) { std::ostringstream os1; - os1 << "File " << wdq_fname; + os1 << "File: " << wdq_fname; info_msg (os1.str().c_str()); + std::ostringstream os; + os << "Legacy Format: "; + if (wdq.m_bLegacy_format) + os << "Yes"; + else + os << "No"; + info_msg(os.str().c_str()); std::ostringstream os2; time_t time = wdq.m_time_acq_start; struct tm* tm = gmtime (&time); @@ -307,6 +335,16 @@ WindaqFile::~WindaqFile () close (m_fd); } +bool read_int1 (int fd, unsigned char& n) +{ + unsigned char tmp1; + if (read (fd, &tmp1, 1) != 1) + return false; + + n = tmp1; + return true; +} + bool read_int2 (int fd, unsigned short int& n) { unsigned char tmp1; @@ -335,11 +373,28 @@ bool read_int4 (int fd, unsigned int& n) return true; } +bool read_float8 (int fd, double& f) +{ + unsigned char buf[8]; + if (read (fd, &buf, 8) != 8) + return false; + +#if WORDS_BIG_ENDIAN + unsigned char c; + c = buf[0]; buf[0] = buf[7]; buf[7] = c; + c = buf[1]; buf[1] = buf[6]; buf[6] = c; + c = buf[2]; buf[2] = buf[5]; buf[5] = c; + c = buf[3]; buf[3] = buf[4]; buf[4] = c; +#endif + + f = *(reinterpret_cast(buf)); + + return true; +} + bool WindaqFile::ReadHeader () { - unsigned short int tmp2; - m_valid = false; if ((m_fd = open (m_strFile.c_str(), O_RDONLY | O_BINARY)) < 0) { m_error = "Unable to open file"; @@ -347,33 +402,74 @@ WindaqFile::ReadHeader () } lseek (0, 0, SEEK_SET); - if (! read_int2 (m_fd, tmp2)) + unsigned short int element1; + if (! read_int2 (m_fd, element1)) return false; - m_nChannels = tmp2 & 0x1f; - m_sr_denom = (tmp2 & 0x7fff) >> 5; - m_sr_numer = (tmp2 & 0x8000) << 1; - - if (! read_int2 (m_fd, tmp2)) + short unsigned int byte1 = (element1 & 0xFF00) >> 8; + short unsigned int byte2 = element1 & 0xFF; + if (byte1 == 0 || byte1 == 1) { + m_bLegacy_format = false; + m_sr_denom = m_sr_numer = 0; + } else { + m_sr_denom = (element1 & 0x7fff) >> 5; + m_sr_numer = (element1 & 0x8000) << 1; + m_bLegacy_format = true; + } + unsigned short int element2; + if (! read_int2 (m_fd, element2)) return false; - m_sr_numer |= tmp2; - m_sample_rate = (double) m_sr_numer / (double) (m_sr_denom * m_nChannels); + if (m_bLegacy_format) + m_sr_numer |= element2; - if (! read_int2 (m_fd, tmp2)) + unsigned char element3; + if (! read_int1 (m_fd, element3)) return false; + m_channel_offset = element3; + if (g_debug) + std::cout << "Channel offset: " << m_channel_offset << std::endl; - m_channel_offset = tmp2 & 0xFF; - m_nBytes_channel_header = tmp2 >> 8; - - if (! read_int2 (m_fd, m_nHeader_bytes)) + unsigned char element4; + if (! read_int1 (m_fd, element4)) return false; + m_nBytes_channel_header = element4; + if (g_debug) + std::cout << "Channel header bytes: " << m_nBytes_channel_header << std::endl; - if (! read_int4 (m_fd, m_nData_bytes)) + unsigned short int element5; + if (! read_int2 (m_fd, element5)) + return false; + m_nHeader_bytes = element5; + if (g_debug) + std::cout << "Header bytes: " << m_nHeader_bytes << std::endl; + + m_nMaxChannels = (m_nHeader_bytes - 112) / 36; + if (m_nMaxChannels >= 144) + m_nChannels = byte2 & 0xFF; + else + m_nChannels = byte2 & 0x1F; + + unsigned int element6; + if (! read_int4 (m_fd, element6)) return false; + m_nData_bytes = element6; + if (g_debug) + std::cout << "Data bytes: " << m_nData_bytes << std::endl; m_nSamples = (m_nData_bytes / m_nChannels) / 2; + lseek (m_fd, 28, SEEK_SET); + double element13; + if (! read_float8 (m_fd, element13)) + return false; + m_time_between_channel_samples = element13; + + if (m_bLegacy_format) + m_sample_rate = (double) m_sr_numer / (double) (m_sr_denom * m_nChannels); + else + m_sample_rate = (double) m_nChannels / m_time_between_channel_samples; + lseek (m_fd, 36, SEEK_SET); if (! read_int4 (m_fd, m_time_acq_start)) return false; @@ -381,14 +477,31 @@ WindaqFile::ReadHeader () if (! read_int4 (m_fd, m_time_acq_stop)) return false; + lseek (m_fd, 100, SEEK_SET); + unsigned short int element27; + if (! read_int2 (m_fd, element27)) + return false; + + m_bHires = (element27 & 0x0001) ? true : false; + if (g_debug) { + std::cout << "High resolution: "; + if (m_bHires) + std::cout << "Yes"; + else + std::cout << "No"; + + std::cout << std::endl; + } + // Verify Windaq signature lseek (m_fd, m_nHeader_bytes - 2, SEEK_SET); - if (! read_int2 (m_fd, tmp2)) + unsigned short int element35; + if (! read_int2 (m_fd, element35)) return false; - if (tmp2 != 0x8001) { + if (element35 != 0x8001) { std::ostringstream os; - m_error = "File is not a valid WinDAQ file"; + m_error = "Incorrect signagure: file is not a valid WinDAQ file"; return false; } @@ -396,7 +509,32 @@ WindaqFile::ReadHeader () return true; } +bool +WindaqFile::any_packed_channels () +{ + for (int iChannel = 0; iChannel < m_nChannels; iChannel++) + if (is_channel_packed (iChannel)) + return true; + + return false; +} + +bool +WindaqFile::is_channel_packed (const int channel) +{ + long iStart = m_channel_offset + channel * m_nBytes_channel_header; + + lseek (m_fd, iStart + 31, SEEK_SET); + unsigned char iReadings_per_data_point; + if (! read_int1 (m_fd, iReadings_per_data_point)) + return false; + + if (iReadings_per_data_point > 1) + return true; + return false; +} + WindaqChannel::WindaqChannel (WindaqFile& wdq, const int channel) : r_wdq(wdq), m_data(0), m_slope(0), m_intercept (0), m_channel(channel), m_valid(false) @@ -420,26 +558,6 @@ WindaqChannel::~WindaqChannel () delete m_data; } -bool get_float8 (int fd, double& f) -{ - unsigned char buf[8]; - if (read (fd, &buf, 8) != 8) - return false; - -#if WORDS_BIG_ENDIAN - unsigned char c; - c = buf[0]; buf[0] = buf[7]; buf[7] = c; - c = buf[1]; buf[1] = buf[6]; buf[6] = c; - c = buf[2]; buf[2] = buf[5]; buf[5] = c; - c = buf[3]; buf[3] = buf[4]; buf[4] = c; -#endif - - f = *(reinterpret_cast(buf)); - - return true; -} - - bool WindaqChannel::read_channel_data () { @@ -450,10 +568,10 @@ WindaqChannel::read_channel_data () lseek (fd, r_wdq.m_channel_offset + 8 + (m_channel - 1) * r_wdq.m_nBytes_channel_header, SEEK_SET); - if (! get_float8 (fd, m_slope)) + if (! read_float8 (fd, m_slope)) return false; - if (! get_float8 (fd, m_intercept)) + if (! read_float8 (fd, m_intercept)) return false; char units[7]; @@ -465,6 +583,7 @@ WindaqChannel::read_channel_data () m_units = units; long int row_bytes = 2 * r_wdq.m_nChannels; + signed short int *sample_row = new signed short int [row_bytes]; signed short int* psample = &sample_row[m_channel - 1]; @@ -488,7 +607,10 @@ WindaqChannel::read_channel_data () unsigned char c = p[0]; p[0] = p[1]; p[1] = c; #endif - signed short int value = v >> 2; + signed short int value = v; + if (! r_wdq.m_bHires) + value >>= 2; + m_data[i] = value; total_data += value; @@ -508,9 +630,12 @@ WindaqChannel::read_channel_data () m_max_scaled_data = (m_slope * data_max) + m_intercept; m_min_scaled_data = (m_slope * data_min) + m_intercept; - if (g_demean) { + if (! g_dont_demean) { double dmean = total_data / static_cast(r_wdq.m_nSamples); int mean = nearest(dmean); + std::cout << "Removing mean: " << (dmean * m_slope) + m_intercept << + " " << m_units << std::endl; + for (i = 0; i < r_wdq.m_nSamples; i++) m_data[i] -= mean; } @@ -566,14 +691,16 @@ WavFile::WavFile (WindaqChannel& wdq_channel, const char* fname) return; unsigned long int i; + for (i = 0; i < m_nSamples; i++) { double value = input[i]; value = (slope * value) + intercept; if (g_ignore_zero) { value = (value + data_offset) * data_scale; value += 0.5 - 32768; - } else + } else { value = value * data_scale; + } signed short int v = static_cast(value); #if WORDS_BIG_ENDIAN