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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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It updates a network setting between a Target PC and a Chamelium.
And it adds informations of Chamelium-specific keys for DRM connector and
Chamelium Port ID in detail.
And it adds "Running the Chamelium With IGT" section.
v2:
Martin Peres
* Change FrameDumpPath to /root/ from /tmp/ on IGT configuration.
* Add physical locations of DP1 and DP2 ports on Chamelium Board.
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>
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This commit (8809638e8e42488aac701066d7ced164854c6c9c) renamed chamelium to
kms_chamelium.
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>
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This adds an explanation about why the Chamelium should only be
connected to one target device at once to the in-tree documentation.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@linux.intel.com>
[with one small style change]
Reviewed-by: Lyude Paul <lyude@redhat.com>
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This introduces plain-text documentation about the Chamelium aimed at
users who wish to deploy the platform, as well as developers who wish
to work on improving IGT support for it.
Given the contents of this documentation, it felt more relevant to make
it part of the tree instead of the API reference.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@linux.intel.com>
(with one small typo fixed)
Reviewed-by: Lyude Paul <lyude@redhat.com>
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