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avfilter/af_afir: properly split IR into multiple segments

This commit is contained in:
Paul B Mahol 2018-12-29 10:57:58 +01:00
parent 3c3eb4930e
commit 300dc45fdc
1 changed files with 4 additions and 2 deletions
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6
libavfilter/af_afir.c
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@ -387,6 +387,7 @@ static int convert_coeffs(AVFilterContext *ctx)
for (ch = 0; ch < ctx->inputs[1]->channels; ch++) {
float *time = (float *)s->in[1]->extended_data[!s->one2many * ch];
int toffset = 0;
for (i = FFMAX(1, s->length * s->nb_taps); i < s->nb_taps; i++)
time[i] = 0;
@ -402,9 +403,8 @@ static int convert_coeffs(AVFilterContext *ctx)
for (i = 0; i < seg->nb_partitions; i++) {
const float scale = 1.f / seg->part_size;
const int toffset = i * seg->part_size;
const int coffset = i * seg->coeff_size;
const int remaining = s->nb_taps - (i * seg->part_size);
const int remaining = s->nb_taps - toffset;
const int size = remaining >= seg->part_size ? seg->part_size : remaining;
memset(block, 0, sizeof(*block) * seg->fft_length);
@ -420,6 +420,8 @@ static int convert_coeffs(AVFilterContext *ctx)
}
coeff[coffset + seg->part_size].re = block[1] * scale;
coeff[coffset + seg->part_size].im = 0;
toffset += size;
}
av_log(ctx, AV_LOG_DEBUG, "nb_partitions: %d\n", seg->nb_partitions);