}
}
+static void shift(uint8_t *a[], int index, int ch_count, enum AVSampleFormat f){
+ int ch;
+
+ if(av_sample_fmt_is_planar(f)){
+ f= av_get_alt_sample_fmt(f, 0);
+ for(ch= 0; ch<ch_count; ch++)
+ a[ch] += index*av_get_bytes_per_sample(f);
+ }else{
+ a[0] += index*ch_count*av_get_bytes_per_sample(f);
+ }
+}
+
uint64_t layouts[]={
AV_CH_LAYOUT_MONO ,
AV_CH_LAYOUT_STEREO ,
uint8_t *ain[SWR_CH_MAX];
uint8_t *aout[SWR_CH_MAX];
uint8_t *amid[SWR_CH_MAX];
+ int flush_i=0;
+ int mode = 0;
struct SwrContext * forw_ctx= NULL;
struct SwrContext *backw_ctx= NULL;
int out_count, mid_count, out_ch_count;
out_ch_layout= layouts[out_ch_layout_index];
out_ch_count= av_get_channel_layout_nb_channels(out_ch_layout);
- fprintf(stderr, "ch %d->%d, rate:%5d->%5d, fmt:%s->%s",
+ fprintf(stderr, "ch %d->%d, rate:%5d->%5d, fmt:%s->%s\n",
in_ch_count, out_ch_count,
in_sample_rate, out_sample_rate,
av_get_sample_fmt_name(in_sample_fmt), av_get_sample_fmt_name(out_sample_fmt));
for(i=0; i<SAMPLES; i++)
set(ain, ch, i, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1), sin(i*i*3/SAMPLES));
}
- mid_count= swr_convert(forw_ctx, amid, 3*SAMPLES, ain, SAMPLES);
+ mode++;
+ mode%=3;
+ if(mode==0 /*|| out_sample_rate == in_sample_rate*/) {
+ mid_count= swr_convert(forw_ctx, amid, 3*SAMPLES, ain, SAMPLES);
+ } else if(mode==1){
+ mid_count= swr_convert(forw_ctx, amid, 0, ain, SAMPLES);
+ mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, ain, 0);
+ } else {
+ int tmp_count;
+ mid_count= swr_convert(forw_ctx, amid, 0, ain, 1);
+ av_assert0(mid_count==0);
+ shift(ain, 1, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
+ mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, ain, 0);
+ shift(amid, mid_count, out_ch_count, av_get_alt_sample_fmt(out_sample_fmt, 1)); tmp_count = mid_count;
+ mid_count+=swr_convert(forw_ctx, amid, 2, ain, 2);
+ shift(amid, mid_count-tmp_count, out_ch_count, av_get_alt_sample_fmt(out_sample_fmt, 1)); tmp_count = mid_count;
+ shift(ain, 2, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
+ mid_count+=swr_convert(forw_ctx, amid, 1, ain, SAMPLES-3);
+ shift(amid, mid_count-tmp_count, out_ch_count, av_get_alt_sample_fmt(out_sample_fmt, 1)); tmp_count = mid_count;
+ shift(ain, -3, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
+ mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, ain, 0);
+ shift(amid, -tmp_count, out_ch_count, av_get_alt_sample_fmt(out_sample_fmt, 1));
+ }
out_count= swr_convert(backw_ctx,aout, SAMPLES, amid, mid_count);
for(ch=0; ch<in_ch_count; ch++){
fprintf(stderr, "[%f %f %f] len:%5d\n", sqrt(sse/out_count), x, maxdiff, out_count);
}
- flush_count=swr_convert(backw_ctx,aout, SAMPLES, 0, 0);
+ flush_i++;
+ flush_i%=21;
+ flush_count = swr_convert(backw_ctx,aout, flush_i, 0, 0);
+ shift(aout, flush_i, in_ch_count, in_sample_fmt);
+ flush_count+= swr_convert(backw_ctx,aout, SAMPLES-flush_i, 0, 0);
+ shift(aout, -flush_i, in_ch_count, in_sample_fmt);
if(flush_count){
for(ch=0; ch<in_ch_count; ch++){
double sse, x, maxdiff=0;
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);
+ fprintf(stderr, "[%f %f %f] len:%5d F:%3d\n", sqrt(sse/flush_count), x, maxdiff, flush_count, flush_i);
}
}