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Prior to this commit, audio tests play sound on all HDMI/DisplayPort PCM
devices (by filtering devices with the "HDMI" prefix). This had several issues.
First, the PCM device → connector mapping via the ELD wasn't checked. Second,
it makes debugging more complicated: if ALSA doesn't detect the screen, we just
get a Chamelium failure (because it doesn't receive any audio stream). Third,
it would play sounds on real screens too (not only Chamelium) and this could
theorically damage bad hardware (though this is just speculation).
To mitigate this issue, check the monitor name of PCM devices we open and only
keep them if it's an IGT EDID (ie. connected to the Chamelium board).
Note that while this is a good improvement, it isn't a complete fix: the ELD
is only exposed by the HDA Intel driver. This means non-IGT PCM devices won't
be filtered out on non-Intel hardware. There is no driver-agnostic way to get
the screen name, I'm afraid.
Cc: Martin Peres <martin.peres@linux.intel.com>
Signed-off-by: Simon Ser <simon.ser@intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>
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This allows us to test whether HW supports a PCM format, and only run the test
if it's the case.
Signed-off-by: Simon Ser <simon.ser@intel.com>
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>
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This commit adds a new format argument to alsa_configure_output. This allows
the caller to decide the format used for the audio signal.
This removes the assumption that samples are S16_LE items in igt_alsa. The
alsa function snd_pcm_format_physical_width is used instead of sizeof(short).
This also removes the theorically incorrect assumption that sizeof(short) ==
sizeof(int16_t).
Right now S16_LE is hardcoded in the test. Tests with other formats will be
added in future commits.
Signed-off-by: Simon Ser <simon.ser@intel.com>
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>
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This is not used anymore because the old audio tests have been removed.
Signed-off-by: Simon Ser <simon.ser@intel.com>
Reviewed-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
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Most people don't have "remember what the last two parameters of
snd_pcm_set_params are" in their lifegoals list. Use variables so that it's
clearer what those are.
Signed-off-by: Simon Ser <simon.ser@intel.com>
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>
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- Print matched audio devices
- Print min/max values when alsa_test_configuration fails
- Print debug log line when skipping a frequency
Signed-off-by: Simon Ser <simon.ser@intel.com>
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>
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Before this patch, the audio test first sends an audio signal for 2s, and then
checks whether the captured signal matches.
This patch makes it so we send and check the signal in parallel. Thus we can
stop the test as soon as we receive the correct signal. This saves ~2s per
audio test.
Signed-off-by: Simon Ser <simon.ser@intel.com>
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>
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This new test ensures DisplayPort audio works by using the Chamelium.
It enables the DisplayPort output and sends an audio signal containing a set of
frequencies we choose to all HDMI/DisplayPort audio devices. It starts
recording audio on the Chamelium device and uses the stream server to retrieve
captured audio pages. It then checks that the capture audio signal contains the
frequencies we sent, and only those, by computing a FFT.
A new library has been added to libigt to communicate with the stream server.
It implements a simple custom TCP protocol.
In case the test fails, a WAV file with the captured data is saved on disk.
Right now the test has a few limitations:
- Only the first channel is checked
- IGT only generates audio with a single sampling rate (48 KHz)
- Audio data is not captured in real-time
These limitations will be lifted in future patches.
PulseAudio must not run during the tests since ALSA is used directly. To ensure
this, edit /etc/pulse/client.conf and add `autospawn=no`. Then run
`pulseaudio --kill`.
This commit deletes the existing audio tests. They weren't run and required an
exotic configuration (HDMI audio splitter, dummy HDMI sink and a line-in port
on the DUT).
This patch also changes lib/igt_audio to use uint16_t instead of short. The
rationale is:
- The standard says a short is at least 16 bit wide, but a short can be
larger (in practice it won't happen, but better use types correctly)
- It makes it clearer that the audio format is S16_LE, since "16" is
in the type name.
This patch depends on the following Chameleon bugs:
- https://crbug.com/948060
- https://crbug.com/950857
Signed-off-by: Simon Ser <simon.ser@intel.com>
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>
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The execution can only reach the end (goto complete) or the new
unconditional assignment a few lines below before the value is read
again. Either it's really a dead assignment, or there's a bug with the
execution flow. Leaning on the former.
Signed-off-by: Petri Latvala <petri.latvala@intel.com>
Cc: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
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Just a bit of OCD, I like it when connections within library modules
are a bit more obvious. igt.h is ok for tests, but let's use individual
include lines for libraries consistently.
Also order standard includes before igt ones.
v2: Rebase.
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Acked-by: Petri Latvala <petri.latvala@intel.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Acked-by: Radoslaw Szwichtenberg <radoslaw.szwichtenberg@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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This introduces an ALSA library, with dedicated helpers for handling
playback and capture. It handles ALSA device identification and
configuration as well as a run loop with callback mechanisms for feeding
output data and handling input data.
This library paves the way for testing audio going through display
connectors, such as HDMI.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@linux.intel.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
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