Most SkCodec subclasses did the following to apply their
SkColorSpaceXform:
dstFormat = select_xform_format(dstInfo.colorType());
srcFormat = select_xform_format(<something that doesn't change>);
xformAlphaType = select_xform_alpha(dstInfo.alphaType(),
this->getInfo().alphaType());
this->colorXform()->apply(dstFormat, dst, srcFormat, src, width,
xformAlphaType);
Consolidate the computation of these parameters into SkCodec and add a
new method to SkCodec that calls apply() with those parameters.
Add a SkColorSpaceXform::ColorFormat to SkCodec. This allows the new
method SkCodec::applyColorXform to supply the ColorFormat.
TBR=reed@google.com
(No change to public API.)
Change-Id: I8ea7ba4c0024be827a9f9359796c778744330f6e
Reviewed-on: https://skia-review.googlesource.com/18523
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
c6e6a5f45e