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tinyalsa: fix: format conversion #1282

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Merged
golowanow merged 1 commit into from
Jul 15, 2025
Merged

tinyalsa: fix: format conversion #1282

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21 changes: 18 additions & 3 deletions case-lib/lib.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -774,9 +774,24 @@ parse_audio_device() {
# There is passes PCM sample format while using ALSA tool (arecord)
# While using TinyALSA (tinycap -b) we need to convert PCM sample fomrat to bits.
extract_format_number() {
# (e.g., extracting '16' from 'S16_LE')
printf '%s' "$1" | grep '[0-9]\+' -o
}
local format_string="$1"
local extracted_num

if [[ "$format_string" =~ ^[SU][0-9]+(_.*)?$ ]]; then
extracted_num=$(printf '%s' "${format_string}" | sed -E 's/^[SU]([0-9]+).*$/\1/')
printf '%s' "$extracted_num"
elif [[ "$format_string" =~ ^FLOAT[0-9]*$ ]]; then
extracted_num=$(printf '%s' "${format_string}" | sed -E 's/^FLOAT([0-9]*).*$/\1/')
# If extracted_num is empty (i.e., just "FLOAT"), default to 32
if [[ -z "$extracted_num" ]]; then
printf '32'
else
printf '%s' "$extracted_num"
fi
else
die "Error: Unknown format: %s\n"
fi
}

# Initialize the parameters using for audio testing.
# shellcheck disable=SC2034
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