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resample: add functions to calculate in/out length

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Add test for this as well
This commit is contained in:
Wim Taymans 2019-07-08 18:26:08 +02:00
parent 0154e6eaac
commit a6a7b3ab54
3 changed files with 76 additions and 0 deletions
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14
spa/plugins/audioconvert/resample-native.h
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@ -134,6 +134,19 @@ static void impl_native_update_rate(struct resample *r, double rate)
}
}
static uint32_t impl_native_in_len(struct resample *r, uint32_t out_len)
{
struct native_data *data = r->data; \
uint32_t in_len;
in_len = (data->phase + out_len * data->frac) / data->out_rate;
in_len += out_len * data->inc + (data->n_taps - data->hist);
spa_log_trace_fp(r->log, "native %p: hist:%d %d->%d", r, data->hist, out_len, in_len);
return in_len;
}
static void impl_native_process(struct resample *r,
const void * SPA_RESTRICT src[], uint32_t *in_len,
void * SPA_RESTRICT dst[], uint32_t *out_len)
@ -245,6 +258,7 @@ static int impl_native_init(struct resample *r)
r->free = impl_native_free;
r->update_rate = impl_native_update_rate;
r->in_len = impl_native_in_len;
r->process = impl_native_process;
r->reset = impl_native_reset;
r->delay = impl_native_delay;