/* ChopWave: return wave chopped to st and end. end = 0 means all */
Wave ChopWave(Wave srcW, HTime start, HTime end, HTime sampRate)
{
Wave tgtW;
HTime length; /* HTime length of file */
long stSamp, endSamp, nSamps;
short *data;
data = GetWaveDirect(srcW,&nSamps);
length = nSamps * sampRate;
if(start >= length)
HError(1030,"ChopWave: Source too short to get data from %.0f",start);
ClampStEn(length,&start,&end);
if(trace & T_SEGMENT)
printf("ChopWave: Extracting data %.0f to %.0f\n",start,end);
stSamp = (long) (start/sampRate);
endSamp = (long) (end/sampRate);
nSamps = endSamp - stSamp;
if(nSamps <= 0)
HError(1030,"ChopWave: Truncation options result in zero-length file");
tgtW = OpenWaveOutput(&cStack,&sampRate,nSamps);
PutWaveSample(tgtW,nSamps,data + stSamp);
CloseWaveInput(srcW);
if(chopF && labF) ChopLabs(tr,start,end);
return(tgtW);
}
/* OpenWaveFile: open source wave file and extract portion if indicated */
HTime OpenWaveFile(char *src)
{
Wave w, cw;
long nSamps;
short *data;
if((w = OpenWaveInput(&iStack,src,srcFF,0,0,&srcSampRate))==NULL)
HError(1013,"OpenWaveFile: OpenWaveInput failed");
srcPK = WAVEFORM;
tgtSampRate = srcSampRate;
cw = (chopF)?ChopWave(w,st,en,srcSampRate) : w;
data = GetWaveDirect(cw,&nSamps);
wv = OpenWaveOutput(&oStack, &srcSampRate, nSamps);
PutWaveSample(wv,nSamps,data);
CloseWaveInput(cw);
return(nSamps*srcSampRate);
}
HTime period;
int sampSize;
int numComps;
long nSamples;
}HeadInfo;
/* PrBar: print a horizantal bar of length n including title */
void PrBar(char *title)
{
int i,len,n;
if (rawOut) return;
len = strlen(title);
n = (barwidth - len)/2;
for (i=1; i<n; i++) putchar(barc);
printf(" %s ",title);
n = barwidth - n - len;
for (i=1; i<n; i++) putchar(barc);
putchar('\n');
}
/* SetBarWidth: set bar width according to nItems and item type */
void SetBarWidth(int itemWidth)
/* AppendWave: append the src file to global wave wv */
HTime AppendWave(char *src)
{
Wave w, cw;
HTime period=0.0;
long nSamps;
short *data;
if((w = OpenWaveInput(&iStack,src, srcFF, 0, 0, &period))==NULL)
HError(1013,"AppendWave: OpenWaveInput failed");
if(trace & T_KINDS )
printf("Appending file %s format: %s [WAVEFORM]\n",src,
Format2Str(WaveFormat(w)));
if(period != srcSampRate)
HError(1032,"AppendWave: Input file %s has inconsistent sampling rate",src);
cw = (chopF)? ChopWave(w,st,en,srcSampRate) : w;
data = GetWaveDirect(cw,&nSamps);
PutWaveSample(wv,nSamps,data);
CloseWaveInput(cw);
return(nSamps*period);
}
