diff options
Diffstat (limited to 'pysoundtouch/soundtouch/source/SoundStretch/RunParameters.cpp')
| -rw-r--r-- | pysoundtouch/soundtouch/source/SoundStretch/RunParameters.cpp | 302 |
1 files changed, 302 insertions, 0 deletions
diff --git a/pysoundtouch/soundtouch/source/SoundStretch/RunParameters.cpp b/pysoundtouch/soundtouch/source/SoundStretch/RunParameters.cpp new file mode 100644 index 0000000..76341b3 --- /dev/null +++ b/pysoundtouch/soundtouch/source/SoundStretch/RunParameters.cpp @@ -0,0 +1,302 @@ +////////////////////////////////////////////////////////////////////////////////
+///
+/// A class for parsing the 'soundstretch' application command line parameters
+///
+/// Author : Copyright (c) Olli Parviainen
+/// Author e-mail : oparviai 'at' iki.fi
+/// SoundTouch WWW: http://www.surina.net/soundtouch
+///
+////////////////////////////////////////////////////////////////////////////////
+//
+// Last changed : $Date: 2009-05-17 19:48:30 +0300 (Sun, 17 May 2009) $
+// File revision : $Revision: 4 $
+//
+// $Id: RunParameters.cpp 72 2009-05-17 16:48:30Z oparviai $
+//
+////////////////////////////////////////////////////////////////////////////////
+//
+// License :
+//
+// SoundTouch audio processing library
+// Copyright (c) Olli Parviainen
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#include <stdexcept>
+#include <string>
+#include <stdlib.h>
+
+#include "RunParameters.h"
+
+using namespace std;
+
+// Program usage instructions
+
+static const char licenseText[] =
+ " LICENSE:\n"
+ " ========\n"
+ " \n"
+ " SoundTouch sound processing library\n"
+ " Copyright (c) Olli Parviainen\n"
+ " \n"
+ " This library is free software; you can redistribute it and/or\n"
+ " modify it under the terms of the GNU Lesser General Public\n"
+ " License version 2.1 as published by the Free Software Foundation.\n"
+ " \n"
+ " This library is distributed in the hope that it will be useful,\n"
+ " but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+ " MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
+ " Lesser General Public License for more details.\n"
+ " \n"
+ " You should have received a copy of the GNU Lesser General Public\n"
+ " License along with this library; if not, write to the Free Software\n"
+ " Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\n"
+ " \n"
+ "This application is distributed with full source codes; however, if you\n"
+ "didn't receive them, please visit the author's homepage (see the link above).";
+
+static const char whatText[] =
+ "This application processes WAV audio files by modifying the sound tempo,\n"
+ "pitch and playback rate properties independently from each other.\n"
+ "\n";
+
+static const char usage[] =
+ "Usage :\n"
+ " soundstretch infilename outfilename [switches]\n"
+ "\n"
+ "To use standard input/output pipes, give 'stdin' and 'stdout' as filenames.\n"
+ "\n"
+ "Available switches are:\n"
+ " -tempo=n : Change sound tempo by n percents (n=-95..+5000 %)\n"
+ " -pitch=n : Change sound pitch by n semitones (n=-60..+60 semitones)\n"
+ " -rate=n : Change sound rate by n percents (n=-95..+5000 %)\n"
+ " -bpm=n : Detect the BPM rate of sound and adjust tempo to meet 'n' BPMs.\n"
+ " If '=n' is omitted, just detects the BPM rate.\n"
+ " -quick : Use quicker tempo change algorithm (gain speed, lose quality)\n"
+ " -naa : Don't use anti-alias filtering (gain speed, lose quality)\n"
+ " -speech : Tune algorithm for speech processing (default is for music)\n"
+ " -license : Display the program license text (LGPL)\n";
+
+
+// Converts a char into lower case
+static int _toLowerCase(int c)
+{
+ if (c >= 'A' && c <= 'Z')
+ {
+ c += 'a' - 'A';
+ }
+ return c;
+}
+
+
+// Constructor
+RunParameters::RunParameters(const int nParams, const char * const paramStr[])
+{
+ int i;
+ int nFirstParam;
+
+ if (nParams < 3)
+ {
+ // Too few parameters
+ if (nParams > 1 && paramStr[1][0] == '-' &&
+ _toLowerCase(paramStr[1][1]) == 'l')
+ {
+ // '-license' switch
+ throwLicense();
+ }
+ string msg = whatText;
+ msg += usage;
+ throw runtime_error(msg.c_str());
+ }
+
+ inFileName = NULL;
+ outFileName = NULL;
+ tempoDelta = 0;
+ pitchDelta = 0;
+ rateDelta = 0;
+ quick = 0;
+ noAntiAlias = 0;
+ goalBPM = 0;
+ speech = FALSE;
+ detectBPM = FALSE;
+
+ // Get input & output file names
+ inFileName = (char*)paramStr[1];
+ outFileName = (char*)paramStr[2];
+
+ if (outFileName[0] == '-')
+ {
+ // no outputfile name was given but parameters
+ outFileName = NULL;
+ nFirstParam = 2;
+ }
+ else
+ {
+ nFirstParam = 3;
+ }
+
+ // parse switch parameters
+ for (i = nFirstParam; i < nParams; i ++)
+ {
+ parseSwitchParam(paramStr[i]);
+ }
+
+ checkLimits();
+}
+
+
+
+// Checks parameter limits
+void RunParameters::checkLimits()
+{
+ if (tempoDelta < -95.0f)
+ {
+ tempoDelta = -95.0f;
+ }
+ else if (tempoDelta > 5000.0f)
+ {
+ tempoDelta = 5000.0f;
+ }
+
+ if (pitchDelta < -60.0f)
+ {
+ pitchDelta = -60.0f;
+ }
+ else if (pitchDelta > 60.0f)
+ {
+ pitchDelta = 60.0f;
+ }
+
+ if (rateDelta < -95.0f)
+ {
+ rateDelta = -95.0f;
+ }
+ else if (rateDelta > 5000.0f)
+ {
+ rateDelta = 5000.0f;
+ }
+}
+
+
+
+// Unknown switch parameter -- throws an exception with an error message
+void RunParameters::throwIllegalParamExp(const string &str) const
+{
+ string msg = "ERROR : Illegal parameter \"";
+ msg += str;
+ msg += "\".\n\n";
+ msg += usage;
+ throw runtime_error(msg.c_str());
+}
+
+
+
+void RunParameters::throwLicense() const
+{
+ throw runtime_error(licenseText);
+}
+
+
+float RunParameters::parseSwitchValue(const string &str) const
+{
+ int pos;
+
+ pos = (int)str.find_first_of('=');
+ if (pos < 0)
+ {
+ // '=' missing
+ throwIllegalParamExp(str);
+ }
+
+ // Read numerical parameter value after '='
+ return (float)atof(str.substr(pos + 1).c_str());
+}
+
+
+// Interprets a single switch parameter string of format "-switch=xx"
+// Valid switches are "-tempo=xx", "-pitch=xx" and "-rate=xx". Stores
+// switch values into 'params' structure.
+void RunParameters::parseSwitchParam(const string &str)
+{
+ int upS;
+
+ if (str[0] != '-')
+ {
+ // leading hyphen missing => not a valid parameter
+ throwIllegalParamExp(str);
+ }
+
+ // Take the first character of switch name & change to lower case
+ upS = _toLowerCase(str[1]);
+
+ // interpret the switch name & operate accordingly
+ switch (upS)
+ {
+ case 't' :
+ // switch '-tempo=xx'
+ tempoDelta = parseSwitchValue(str);
+ break;
+
+ case 'p' :
+ // switch '-pitch=xx'
+ pitchDelta = parseSwitchValue(str);
+ break;
+
+ case 'r' :
+ // switch '-rate=xx'
+ rateDelta = parseSwitchValue(str);
+ break;
+
+ case 'b' :
+ // switch '-bpm=xx'
+ detectBPM = TRUE;
+ try
+ {
+ goalBPM = parseSwitchValue(str);
+ }
+ catch (const runtime_error)
+ {
+ // illegal or missing bpm value => just calculate bpm
+ goalBPM = 0;
+ }
+ break;
+
+ case 'q' :
+ // switch '-quick'
+ quick = 1;
+ break;
+
+ case 'n' :
+ // switch '-naa'
+ noAntiAlias = 1;
+ break;
+
+ case 'l' :
+ // switch '-license'
+ throwLicense();
+ break;
+
+ case 's' :
+ // switch '-speech'
+ speech = TRUE;
+ break;
+
+ default:
+ // unknown switch
+ throwIllegalParamExp(str);
+ }
+}
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