+
+ flush_count=swr_convert(backw_ctx,aout, SAMPLES, 0, 0);
+ if(flush_count){
+ for(ch=0; ch<in_ch_count; ch++){
+ double sse, x, maxdiff=0;
+ double sum_a= 0;
+ double sum_b= 0;
+ double sum_aa= 0;
+ double sum_bb= 0;
+ double sum_ab= 0;
+ for(i=0; i<flush_count; i++){
+ double a= get(ain , ch, i+out_count, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
+ double b= get(aout, ch, i, in_ch_count, in_sample_fmt);
+ sum_a += a;
+ sum_b += b;
+ sum_aa+= a*a;
+ sum_bb+= b*b;
+ sum_ab+= a*b;
+ maxdiff= FFMAX(maxdiff, FFABS(a-b));
+ }
+ x = sum_ab/sum_bb;
+ sse= sum_aa + sum_bb*x*x - 2*x*sum_ab;
+
+ fprintf(stderr, "[%f %f %f] len:%5d\n", sqrt(sse/flush_count), x, maxdiff, flush_count);
+ }
+ }
+
+