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Bug: pdfium:1135
Change-Id: Iea16a65a5eebcb914192eb49de17a2c4eda83320
Reviewed-on: https://pdfium-review.googlesource.com/40690
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
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Defer upscaling as late as possible so that intermediary data
structures are smaller.
Made a couple of changes along the way to preserve the barcode
correctness and fix some padding issues.
For my example, this is a ~21x improvement in rendering time, down
from ~190ms per barcode to ~9ms.
Bug: 872907, pdfium:1135
Change-Id: If532e0f168f02fea9c31d473f34c0009da4f4612
Reviewed-on: https://pdfium-review.googlesource.com/40010
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
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Reduce the logical size of the barcode by removing unnecessary
region duplication.
As far as I can tell, the line thickness is useless and the aspect
ratio causes arbitrary changes in rounding, but ultimately the
dimensions of a barcode are defined by its width and height, rather
than by this ratio.
The improvement with this CL is from ~580ms to ~390ms per barcode,
so about 1.5x. Combined with
https://pdfium-review.googlesource.com/c/pdfium/+/40010
the improvement is to ~15ms, which is about 39x.
This also fixes the rendering of the barcode in the pixel and
corpus tests. You can verify this pointing a barcode reader app at
the screen. It does not however fix every case, as the unit test is
still unreadable.
Bug: 872907, pdfium:1135
Change-Id: Ic28e60f54719552cfe69ace7ebc3f730c338a129
Reviewed-on: https://pdfium-review.googlesource.com/40030
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
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This adds a test where a known value is used as a seed for generating
a barcode and confirming that the generated barcode is consistent.
BUG=pdfium:1020
Change-Id: I61ed37a8591f0efe40a8d4ab1d6024bb1489ef25
Reviewed-on: https://pdfium-review.googlesource.com/34030
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
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