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The BO pitches are unconditionally set to the frame buffer pitch, for
all planes. This is correct for semiplanar YUV formats, as they
subsample chroma horizontally by two but combined U and V in a single
plane, cancelling each other. For fully planar YUV formats, however, the
horizontal subsampling need to be taken into account to compute the
pitch. Fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The DumbFrameBuffer class supports up to 4 planes, as required by the
DRM/KMS API, but only considers planes 0 and 1 when constructing the
buffer. Fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Use std::array and .at() to get bounds checking.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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This is needed for building with some version of some
compilers where it is not automatically included with
the existing include set (clang).
Signed-off-by: Andrew F. Davis <afd@ti.com>
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Drop (I)MappedFramebuffer, as it doesn't really provide any value, and
have most of the methods be present in IFramebuffer with default
exception throwing implementation.
This gives us simpler way to use the framebuffers, as almost always we
can just use a pointer to IFramebuffer.
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Add a base MappedFramebuffer class, which inherits Framebuffer and
implements IMappedFramebuffer. This helps to implement platform
specific framebuffer classes, like OmapFramebuffer.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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This enables write access to the dumb fb with mmap().
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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