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kpb: fix buffered_data calculation 

This commit introduces proper calculation of buffered_data,
which should not exceed buffer_size value. Firstly, we calculate
free space in history buffer and we add minimum value from
copy_bytes and hb_free_space.

Signed-off-by: Bartosz Kokoszko <bartoszx.kokoszko@linux.intel.com>
This commit is contained in:
Bartosz Kokoszko 2020-01-27 10:04:31 +01:00 committed by Liam Girdwood
parent 971b513801
commit 61a51bc789
1 changed files with 8 additions and 2 deletions
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10
src/audio/kpb.c
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@ -564,6 +564,7 @@ static int kpb_copy(struct comp_dev *dev)
struct comp_buffer *sink = NULL;
size_t copy_bytes = 0;
size_t sample_width = kpb->config.sampling_width;
uint32_t hb_free_space;
tracev_kpb_with_ids(dev, "kpb_copy()");
@ -615,8 +616,13 @@ static int kpb_copy(struct comp_dev *dev)
"failed.");
goto out;
}
if (kpb->buffered_data < kpb->buffer_size)
kpb->buffered_data += copy_bytes;
if (kpb->buffered_data < kpb->buffer_size) {
hb_free_space = kpb->buffer_size -
kpb->buffered_data;
kpb->buffered_data +=
MIN(copy_bytes, hb_free_space);
}
} else {
trace_kpb_error_with_ids(dev, "kpb_copy(): "
"too much data to buffer.");