Optimize rendering of two dimensional barcodes: deduplicate regions.

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>

1 files changed, 1 insertions, 1 deletions

diff --git a/DEPS b/DEPS
index 20e7e51f7c..b61a144406 100644
--- a/DEPS
+++ b/DEPS
@@ -29,7 +29,7 @@ vars = {
   'jinja2_revision': '45571de473282bd1d8b63a8dfcb1fd268d0635d2',
   'jpeg_turbo_revision': '7260e4d8b8e1e40b17f03fafdf1cd83296900f76',
   'markupsafe_revision': '8f45f5cfa0009d2a70589bcda0349b8cb2b72783',
-  'pdfium_tests_revision': '62a57ad4d90cf1f68f41c24da7ea413750336235',
+  'pdfium_tests_revision': '0121d24bf42e437bea80dffe251cccf013482551',
   'skia_revision': '588f879677d4f36e16a42dd96876534f104c2e2f',
   'tools_memory_revision': 'f7b00daf4df7f6c469f5fbc68d7f40f6bd15d6e6',
   'trace_event_revision': '211b3ed9d0481b4caddbee1322321b86a483ca1f',