tools: Add a new test for pause/resume #1285
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The test runs the specified number of pause/resume iterations on a combination of a playback PCM and a capture PCM looping through all available playback and capture PCM devices available in the SOF audio card. It skips the deep buffer playback PCMs for the time being. Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
ranj063
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marc-hb
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Assuming it's the same feature, there is already a pause/resume test in shell script and expect, see c809fff. I wonder why this new one is needed.
I could be wrong but there is currently no support to compile C code in sof-test before deployment.
No harm in adding "manual" test code of course.
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@ranj063 do you plan to add building and running the test to this PR? I think it would be important to see its results in the same PR |
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Initial comments inline. I wonder if some existing tool could be used as well -- could be easier to integrate to sof-test runs in CI (versus starting to build C tools and deploy them to DUTs).
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| // if card name doesnt contain "sof", skip it | ||
| if (strstr(snd_ctl_card_info_get_name(card_info), "sof") == NULL) { | ||
| snd_ctl_close(ctl); |
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This is not so obvious for the user. We could have SOF based cards that doen't have a "sof" prefix. A print to the user would be helpful.
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| #include <stdio.h> | |||
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Some license needs to be attached.
| } | ||
| // calculate wait time based on the period size and sample rate | ||
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| usleep((playback_framesize / 48000) * 1000000); // Convert to microseconds |
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This is fixed to 48000 now, would be good to use a define this as many places in code depend on this.
| cleanup_pcm_handles(); | ||
| break; | ||
| } | ||
| usleep((capture_framesize / 48000) * 1000000); // Convert to microseconds |
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This is not good, there should be a call on pcm_avail to block until there is enough data to read. This can get out of sync (CPU versus codec/DSP clock). Same for playback.
| snd_pcm_hw_params_set_format(playback_handle, playback_params_1, SND_PCM_FORMAT_S16_LE); | ||
| snd_pcm_hw_params_set_channels(playback_handle, playback_params_1, 2); | ||
| snd_pcm_hw_params_set_rate(playback_handle, playback_params_1, 48000, 0); | ||
| playback_framesize = BUFFER_SIZE / (2 * 4); // 2 channels, 4 bytes per sample |
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These should be separeate defines (channel count and sample format).
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I could be wrong but there is currently no support to compile C code in sof-test before deployment.
I wonder if some existing tool could be used as well -- could be easier to integrate to sof-test runs in CI (versus starting to build C tools and deploy them to DUTs).
Actually, doesn't this new test belong to https://github.com/alsa-project rather than sof-test? Please correct me but the only SOF-specific bit in this PR seems to be where the test ignores non-SOF cards (why?) Which cards to test looks like it should be a command line argument, not hard-coded.
Hosting this test in ALSA would solve the deployment problem since ALSA already needs a C compiler for deployment.
cc: @golowanow , @cgturner1
Now you can argue that a lot of sof-test is not that SOF-specific either and could/should be moved to https://github.com/alsa-project too. True but there are important differences:
- sof-test/test-case/ code is not brand new; it's much more difficult to move stuff that already exists
- it's shell and Python and not C code and does not have a C deployment issue. Not sure ALSA maintainers would even accept higher level languages much.
- it would be a challenge to disentangle the non-SOF specific bits while maintaining some stable interface with ALSA. Making sure the combinations of sof-test + ALSA versions deployed stay compatible with each other would be "fun".
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The test runs the specified number of pause/resume iterations on a combination of a playback PCM and a capture PCM looping through all available playback and capture PCM devices available in the SOF audio card. It skips the deep buffer playback PCMs for the time being.