static int read_samples(short *sample_buffer,
int frame_size)
{
int samples_read;
switch(config.wave.type)
{
default :
ERROR("[read_samples], wave filetype not supported");
case WAVE_RIFF_PCM :
samples_read = fread(sample_buffer,sizeof(short),frame_size, config.wave.file);
/* Microsoft PCM Samples are little-endian, */
/* we must swap if this is a big-endian machine */
if(config.byte_order==order_bigEndian)
SwapBytesInWords(sample_buffer,samples_read);
if(samples_read<frame_size && samples_read>0)
{ /* Pad sample with zero's */
while(samples_read<frame_size) sample_buffer[samples_read++] = 0;
}
break;
}
return samples_read;
}
int read_samples_pcm(lame_global_flags *gfp,short sample_buffer[2304], int frame_size,int samples_to_read)
{
int samples_read;
int rcode;
int iswav=(gfp->input_format==sf_wave);
samples_read = fread(sample_buffer, sizeof(short), samples_to_read, musicin);
if (ferror(musicin)) {
fprintf(stderr, "Error reading input file\n");
exit(2);
}
/*
Samples are big-endian. If this is a little-endian machine
we must swap
*/
if ( NativeByteOrder == order_unknown )
{
NativeByteOrder = DetermineByteOrder();
if ( NativeByteOrder == order_unknown )
{
fprintf( stderr, "byte order not determined\n" );
exit( 1 );
}
}
/* intel=littleEndian */
if (!iswav && ( NativeByteOrder == order_littleEndian ))
SwapBytesInWords( sample_buffer, samples_read );
if (iswav && ( NativeByteOrder == order_bigEndian ))
SwapBytesInWords( sample_buffer, samples_read );
if (gfp->swapbytes==TRUE)
SwapBytesInWords( sample_buffer, samples_read );
rcode=samples_read;
if (samples_read < frame_size) {
if (samples_read<0) samples_read=0;
/*fprintf(stderr,"Insufficient PCM input for one frame - fillout with zeros\n");
*/
for (; samples_read < frame_size; sample_buffer[samples_read++] = 0);
}
return(rcode);
}
int wave_get_samples(wave_info_t * wave_info, short int pcm[], int numSamples)
{
int samples_read;
FILE *file = wave_info->soundfile;
samples_read = fread(pcm, sizeof(short int), numSamples, file);
if (wave_info->byteswap) {
SwapBytesInWords(pcm, samples_read);
}
return (samples_read / wave_info->channels);
}
