data.output_frames = output_size;
data.end_of_input = 1;
data.src_ratio = double (_out_rate) / _in_rate;
int const r = src_process (_src, &data);
if (r) {
data.output_frames = output_size;
data.end_of_input = 1;
data.src_ratio = double (_out_rate) / _in_rate;
int const r = src_process (_src, &data);
if (r) {