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simplify the main loop for downscaling

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(part of bug #254 investigation)

no speed change observed.

Change-Id: Ie21b33171def367f37643fef6a0bd378e49468c7
This commit is contained in:
Pascal Massimino
2015-08-03 16:49:00 +02:00
parent 585d93dbba
commit c455676680
4 changed files with 9 additions and 8 deletions
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2
src/utils/rescaler.c
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@ -31,7 +31,7 @@ void WebPRescalerInit(WebPRescaler* const wrk, int src_width, int src_height,
wrk->dst_stride = dst_stride;
wrk->num_channels = num_channels;
// for 'x_expand', we use bilinear interpolation
wrk->x_add = wrk->x_expand ? (x_sub - 1) : x_add - x_sub;
wrk->x_add = wrk->x_expand ? (x_sub - 1) : x_add;
wrk->x_sub = wrk->x_expand ? (x_add - 1) : x_sub;
wrk->y_accum = y_add;
wrk->y_add = y_add;