int stuff_buffer(double playback_rate, short *inptr, short *outptr) {
int i;
int stuffsamp = frame_size;
int stuff = 0;
double p_stuff;
p_stuff = 1.0 - pow(1.0 - fabs(playback_rate-1.0), frame_size);
if ((float)rand()/((float)RAND_MAX) < p_stuff) {
stuff = playback_rate > 1.0 ? -1 : 1;
stuffsamp = rand() % (frame_size - 1);
}
for (i=0; i<stuffsamp; i++) { // the whole frame, if no stuffing
*outptr++ = dithered_vol(*inptr++);
*outptr++ = dithered_vol(*inptr++);
};
if (stuff) {
if (stuff==1) {
if (debug)
fprintf(stderr, "+++++++++\n");
// interpolate one sample
*outptr++ = dithered_vol(((long)inptr[-2] + (long)inptr[0]) >> 1);
*outptr++ = dithered_vol(((long)inptr[-1] + (long)inptr[1]) >> 1);
} else if (stuff==-1) {
if (debug)
fprintf(stderr, "---------\n");
inptr++;
inptr++;
}
for (i=stuffsamp; i<frame_size + stuff; i++) {
*outptr++ = dithered_vol(*inptr++);
*outptr++ = dithered_vol(*inptr++);
}
}
static int stuff_buffer(double playback_rate, short *inptr, short *outptr) {
int i;
int stuffsamp = frame_size;
int stuff = 0;
double p_stuff;
p_stuff = 1.0 - pow(1.0 - fabs(playback_rate-1.0), frame_size);
if (rand() < p_stuff * RAND_MAX) {
stuff = playback_rate > 1.0 ? -1 : 1;
stuffsamp = rand() % (frame_size - 1);
}
pthread_mutex_lock(&vol_mutex);
for (i=0; i<stuffsamp; i++) { // the whole frame, if no stuffing
*outptr++ = dithered_vol(*inptr++);
*outptr++ = dithered_vol(*inptr++);
};
if (stuff) {
if (stuff==1) {
debug(2, "+++++++++\n");
// interpolate one sample
*outptr++ = dithered_vol(((long)inptr[-2] + (long)inptr[0]) >> 1);
*outptr++ = dithered_vol(((long)inptr[-1] + (long)inptr[1]) >> 1);
} else if (stuff==-1) {
