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This introduces a new frame comparison method that was designed for
patterns that follow a checkerboard style. These patterns are made of
consecutive rectangular shapes with alternating solid colors. They are
currently used for some Chamelium-based tests.
The method is particularly adapted for cases where the edges of the
shapes might be blurred (e.g. due to scaling), which makes it impossible
to use pixel-perfect or CRC-based comparisons to decide whether the
captured frame matches the reference.
Overall, this test will first detect the edges of the pattern and later
exclude them from comparison. Colors are compared between the reference
and capture with a low threshold for error. A percentage of the faulty
pixels is calculated and the captured frame is considered invalid if
more than one percent of the pixels are erroneous.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Maxime Ripard <maxime.ripard@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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Just a bit of ocd for anything non-static.
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 adds support for analog frame comparison check, as used in VGA.
Since VGA uses a DAC-ADC chain, its data cannot be expected to be pixel
perfect. Thus, it is impossible to uses a CRC check and full frames have
to be analyzed instead. Such an analysis is implemented, based on both
an absolute error threshold and a correlation with the expected error
trend for a DAC-ADC chain. It was tested with a couple encoders and
provides reliable error detection with few false positives.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@linux.intel.com>
Reviewed-by: Lyude <lyude@redhat.com>
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This introduces a common FrameDumpPath configuration field, as well as
helper functions in dedicated igt_frame for writing cairo surfaces
to png files.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@linux.intel.com>
Reviewed-by: Lyude <lyude@redhat.com>
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