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~30% encoding speedup: use NEON for QuantizeBlock()

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also revamped the signature to avoid having to pass the 'first' parameter

Change-Id: Ief9af1747dcfb5db0700b595d0073cebd57542a5
This commit is contained in:
skal
2014-04-07 18:02:25 +02:00
committed by Gerrit Code Review
parent f758af6b73
commit 869eaf6c60
6 changed files with 87 additions and 24 deletions
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9
src/dsp/enc_sse2.c
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@ -805,7 +805,7 @@ static int Disto16x16(const uint8_t* const a, const uint8_t* const b,
#define QFIX2 0
static WEBP_INLINE int DoQuantizeBlock(int16_t in[16], int16_t out[16],
int n, int shift,
int shift,
const uint16_t* const sharpen,
const VP8Matrix* const mtx) {
const __m128i max_coeff_2047 = _mm_set1_epi16(MAX_LEVEL);
@ -916,18 +916,17 @@ static WEBP_INLINE int DoQuantizeBlock(int16_t in[16], int16_t out[16],
}
// detect if all 'out' values are zeroes or not
if (n) packed_out = _mm_srli_si128(packed_out, 1); // ignore DC for n == 1
return (_mm_movemask_epi8(_mm_cmpeq_epi8(packed_out, zero)) != 0xffff);
}
static int QuantizeBlock(int16_t in[16], int16_t out[16],
int n, const VP8Matrix* const mtx) {
return DoQuantizeBlock(in, out, n, 0, &mtx->sharpen_[0], mtx);
const VP8Matrix* const mtx) {
return DoQuantizeBlock(in, out, 0, &mtx->sharpen_[0], mtx);
}
static int QuantizeBlockWHT(int16_t in[16], int16_t out[16],
const VP8Matrix* const mtx) {
return DoQuantizeBlock(in, out, 0, 0, &mtx->sharpen_[0], mtx);
return DoQuantizeBlock(in, out, 0, &mtx->sharpen_[0], mtx);
}
#endif // WEBP_USE_SSE2