[igt-dev] [PATCH i-g-t v2 2/3] lib/tests/igt_audio: add a pop test

[Martin Peres]

On 04/06/2019 14:48, Simon Ser wrote:
> Make sure adding a pop in the input signal makes audio_signal_detect fail.
> 
> Signed-off-by: Simon Ser <simon.ser at intel.com>
> ---
>  lib/tests/igt_audio.c | 23 +++++++++++++++++++++++
>  1 file changed, 23 insertions(+)
> 
> diff --git a/lib/tests/igt_audio.c b/lib/tests/igt_audio.c
> index 47e61adf74fe..821813bae47a 100644
> --- a/lib/tests/igt_audio.c
> +++ b/lib/tests/igt_audio.c
> @@ -116,6 +116,26 @@ static void test_signal_detect_with_unexpected_freq(struct audio_signal *signal)
>  	igt_assert(!ok);
>  }
>  
> +static void test_signal_detect_pop(struct audio_signal *signal)

I would prefer you repeating/holding the sample for multiple samples as
opposed to forcing 0.9.

How about naming the test "test_signal_detect_held_sample"?

> +{
> +	double *buf;
> +	bool ok;
> +	size_t i;
> +
> +	buf = malloc(BUFFER_LEN * sizeof(double));
> +	audio_signal_fill(signal, buf, BUFFER_LEN / CHANNELS);
> +
> +	/* Add a discontinuity in the signal */
> +	for (i = 0; i < 5; i++)
> +		buf[BUFFER_LEN / 3 + i] = 0.9;
> +
> +	ok = audio_signal_detect(signal, SAMPLING_RATE, 0, buf, BUFFER_LEN);
> +
> +	free(buf);
> +
> +	igt_assert(!ok);
> +}
> +
>  igt_main
>  {
>  	struct audio_signal *signal;
> @@ -151,6 +171,9 @@ igt_main
>  		igt_subtest("signal-detect-with-unexpected-freq")
>  			test_signal_detect_with_unexpected_freq(signal);
>  
> +		igt_subtest("signal-detect-pop")
> +			test_signal_detect_pop(signal);
> +
>  		igt_fixture {
>  			audio_signal_fini(signal);
>  		}
>