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neon IsFlat

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Move IsFlat to its own header. This allows it to continue to be
inlined. Using the RTCD and creating a distinct function slows down arm
builds.

   flower   mug
C    3.59  2.12
NEON 3.47  2.01

BUG=b/118740850

Change-Id: Id77e8f76d9e9790c498806e7070bbe37c10bc2e9
This commit is contained in:
Johann
2018-11-13 14:25:59 -08:00
committed by Pascal Massimino
parent 5b081219c9
commit 5173d4ee6f
3 changed files with 72 additions and 14 deletions
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15
src/enc/quant_enc.c
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@ -15,6 +15,7 @@
#include <math.h>
#include <stdlib.h> // for abs()
#include "src/dsp/quant.h"
#include "src/enc/vp8i_enc.h"
#include "src/enc/cost_enc.h"
@ -977,20 +978,6 @@ static void SwapOut(VP8EncIterator* const it) {
SwapPtr(&it->yuv_out_, &it->yuv_out2_);
}
static WEBP_INLINE int IsFlat(const int16_t* levels, int num_blocks,
int thresh) {
int score = 0;
while (num_blocks-- > 0) { // TODO(skal): refine positional scoring?
int i;
for (i = 1; i < 16; ++i) { // omit DC, we're only interested in AC
score += (levels[i] != 0);
if (score > thresh) return 0;
}
levels += 16;
}
return 1;
}
static void PickBestIntra16(VP8EncIterator* const it, VP8ModeScore* rd) {
const int kNumBlocks = 16;
VP8SegmentInfo* const dqm = &it->enc_->dqm_[it->mb_->segment_];