ComposerDesktopProject/dev/newsfsys/props.cpp

/*
 * Copyright (c) 1983-2013 Martin Atkins, Richard Dobson and Composers Desktop Project Ltd
 * http://people.bath.ac.uk/masrwd
 * http://www.composersdesktop.com
 *
 This file is part of the CDP System.
 
 The CDP System 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.
 
 The CDP System 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 the CDP System; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 02111-1307 USA
 *
 */
/*  props.cpp: adapted from speclib3.c
 *  NB this is now real C++ code, not C!    
 *  
 */
//LATEST VERSION OCT97: supercedes all previous!
//can I make this fully portable to both graphic and console apps?

//TODO: Feb 2014: replace sizeof(long) with sizeof(int) everywhere!

#include "stdafx.h"        //for MFC: def of BOOL, TRUE, FALSE, etc
//#include <propobjs.h>
//use multi-threaded version of sfsys.lib
extern "C" {
#include <sfsys.h>
}

#include "props.h"
char *props_errstr = NULL;
//RWD TODO: also need a copy constructor...
/***************************** HEADREAD *******************************
 *
 * Read input analysis file header data.
 */


BOOL sndheadread(int fd,SFPROPS &props)
{
    int srate,chans,samptype,origsize = 0,origrate = 0, origchans = 0,dummy;
    float arate = (float)0.0;
    int wlen=0,dfac=0,specenvcnt = 0,checksum=0;

    props_errstr = NULL;
    if(fd <0){
        props_errstr = "Bad Soundfile Handle";
        return FALSE;
    }
    if(sndgetprop(fd,"sample rate", (char *)&srate, sizeof(int)) < 0) {
        props_errstr = "Failure to read sample rate";
        return FALSE;
    }
    if(sndgetprop(fd,"channels", (char *)&chans, sizeof(int)) < 0) {
        props_errstr ="Failure to read channel data";
        return FALSE;
    }
    if(sndgetprop(fd,"sample type", (char *)&samptype, sizeof(int)) < 0){
        props_errstr = "Failure to read sample size";
        return FALSE;
    }
    if(!(samptype==SAMP_SHORT || samptype== SAMP_FLOAT)){
            props_errstr = "unsupported sample type";
            return FALSE;
    }

    props.srate = srate;
    props.chans = chans;
    if(samptype == SAMP_SHORT || samptype== SAMP_FLOAT){    
        props.type = wt_wave;
        props.samptype = (samptype == SAMP_SHORT ? SHORT16 : FLOAT32);
    }
    if(props.samptype==FLOAT32) {
        //we know we have floats: is it spectral file?
        if(sndgetprop(fd,"original sampsize",(char *)&origsize, sizeof(int))<0){
            props_errstr = "Failure to read original sample size";
        }
        if(sndgetprop(fd,"original sample rate",(char *)&origrate,sizeof(int))<0){
            props_errstr = "Failure to read original sample rate";
        }
        if(sndgetprop(fd,"arate",(char *)&arate,sizeof(float)) < 0){
            props_errstr = "Failure to read analysis sample rate";
        }
        if(sndgetprop(fd,"analwinlen",(char *)&wlen,sizeof(int)) < 0){
            props_errstr = "Failure to read analysis window length";
        }
        if(sndgetprop(fd,"decfactor",(char *)&dfac,sizeof(int)) < 0){
            props_errstr = "Failure to read decimation factor";
        }
        //TODO: find a way to guarantee unique checksums...
        checksum = origsize + origrate + wlen + dfac + (int)arate;
        if(checksum==0)     //its a wave file
            return TRUE;        
        else {
            if(props_errstr==NULL){ //its a good spectral file              
                props.origsize = origsize;
                props.origrate = origrate;
                props.arate = arate;
                props.winlen = wlen;
                props.decfac = dfac;
                //props.chans = (wlen+2)/2;     //??

                if(sndgetprop(fd,"is a pitch file", (char *)&dummy, sizeof(int))>=0)
                    props.type = wt_pitch;
                else if(sndgetprop(fd,"is a transpos file", (char *)&dummy, sizeof(int))>=0)
                    props.type = wt_transposition;
                else if(sndgetprop(fd,"is a formant file", (char *)&dummy, sizeof(int))>=0)
                    props.type = wt_formant;
                else
                    props.type = wt_analysis;
            } else
                return FALSE;   //somehow, got a bad analysis file...
        }
        // get any auxiliary stuff for control file
        //adapted from TW's function in speclibg.cpp
        switch(props.type){
        case(wt_formant):
            if(sndgetprop(fd,"specenvcnt",(char *)&specenvcnt,sizeof(int)) < 0){
                props_errstr = "Failure to read formant size in formant file";
                return FALSE;
            }
            props.specenvcnt = specenvcnt;
            break;
        case(wt_pitch):
        case(wt_transposition):
            if(props.chans != 1){
                props_errstr =  "Channel count not equal to 1 in transposition file";
                return FALSE;
            }
            if(sndgetprop(fd,"orig channels", (char *)&origchans, sizeof(int)) < 0) {
                props_errstr =  "Failure to read original channel data from transposition file";
                return FALSE;
            }
            props.origchans = origchans;
            break;
        default:
            break;
        }

    }
    return TRUE;
}
#if 0
// next is for SOUND files only...
//TODO: full support for analysis and control files!
BOOL sfwave_headwrite(int fd,const SFPROPS &props)
{
    
#ifdef _DEBUG
     ASSERT(fd >= 0);
     ASSERT(props.samptype==SHORT16 || props.samptype==FLOAT32);
     ASSERT(props.srate > 0);
     ASSERT(props.chans > 0);
#endif
    int srate = props.srate;
    int chans = props.chans;
    int samptype;

    if(fd <0){
        props_errstr = "Cannot write soundfile: bad Handle";
        return FALSE;
    }
    if(props.type == wt_wave)
        samptype = (props.samptype == SHORT16 ? SAMP_SHORT : SAMP_FLOAT);  //within sfsys,mostly safe assumption...
    else {
        props_errstr = "Not a wave file";
        return FALSE;
    }
        
    if(sfputprop(fd,"sample rate", (char *)&srate, sizeof(long)) < 0) {
        props_errstr = "Failure to write sample rate";
        return FALSE;
        }
        if(sfputprop(fd,"channels", (char *)&chans, sizeof(long)) < 0) {
        props_errstr ="Failure to write channel data";
        return FALSE;
        }
        if(sfputprop(fd,"sample type", (char *)&samptype, sizeof(long)) < 0){
        props_errstr = "Failure to write sample size";
        return FALSE;
        }
        return TRUE;
}
#endif

fileprops::~fileprops()
{
}

fileprops::fileprops()
{
    srate      = 0;
    stype      = -1;
    filetype   = UNKNOWN;
    channels   = 0;
    origstype  = -1;
    origrate   = 0;
    origchans  = 0;
    specenvcnt = 0;
    Mlen       = 0;
    Dfac       = 0;
    arate      = 0.0f;
}

//TODO: when I have unique checksums, can just compare them
const fileprops& fileprops::operator=(const fileprops &rhs)
{
    if(!(rhs == *this)){         //use  my operator==; TODO: define operator!= as well...
            srate       = rhs.srate;
            channels    = rhs.channels;
            stype       = rhs.stype;
            origstype   = rhs.origstype;
            origrate    = rhs.origrate;
            Mlen        = rhs.Mlen;
            Dfac        = rhs.Dfac;
            arate       = rhs.arate;
            origchans   = rhs.origchans;
            specenvcnt  = rhs.specenvcnt;   //RWD: comes from?
    }
    return *this;
}

int fileprops::operator==(const fileprops &rhs) const
{
          return (srate == rhs.srate
             && channels    == rhs.channels
            &&  stype       == rhs.stype
            &&  origstype   == rhs.origstype
            &&  origrate    == rhs.origrate
            &&  Mlen        == rhs.Mlen
            &&  Dfac        == rhs.Dfac
            &&  arate       == rhs.arate
            &&  origchans   == rhs.origchans
            &&  specenvcnt  == rhs.specenvcnt);
}