dany/libwebp
1
0
Fork 0
mirror of https://github.com/webmproject/libwebp.git synced 2024-12-27 06:08:21 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

SSE2: minor cosmetrics on in-loop filter code

Browse Source 
Change-Id: Ic0e6502081d7063bb2841df74e05c450d708aaf2
This commit is contained in:
Pascal Massimino 2015-06-28 11:59:22 +02:00
parent 4741fac42e
commit 36e9c4bc50
1 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
src/dsp/dec_sse2.c
View File

@ -331,8 +331,8 @@ static WEBP_INLINE void GetNotHEV(const __m128i* const p1,
const __m128i h = _mm_set1_epi8(hev_thresh);
const __m128i t_max = _mm_max_epu8(t_1, t_2);
*not_hev = _mm_subs_epu8(t_max, h);
*not_hev = _mm_cmpeq_epi8(*not_hev, zero); // not_hev <= t1 && not_hev <= t2
const __m128i t_max_h = _mm_subs_epu8(t_max, h);
*not_hev = _mm_cmpeq_epi8(t_max_h, zero); // not_hev <= t1 && not_hev <= t2
}
// input pixels are int8_t
@ -426,9 +426,11 @@ static WEBP_INLINE void DoFilter2(__m128i* const p1, __m128i* const p0,
static WEBP_INLINE void DoFilter4(__m128i* const p1, __m128i* const p0,
__m128i* const q0, __m128i* const q1,
const __m128i* const mask, int hev_thresh) {
const __m128i sign_bit = _mm_set1_epi8(0x80);
const __m128i k64 = _mm_set1_epi8(0x40);
const __m128i zero = _mm_setzero_si128();
const __m128i sign_bit = _mm_set1_epi8(0x80);
const __m128i k64 = _mm_set1_epi8(64);
const __m128i k3 = _mm_set1_epi8(3);
const __m128i k4 = _mm_set1_epi8(4);
__m128i not_hev;
__m128i t1, t2, t3;
@ -446,10 +448,8 @@ static WEBP_INLINE void DoFilter4(__m128i* const p1, __m128i* const p0,
t1 = _mm_adds_epi8(t1, t2); // hev(p1 - q1) + 3 * (q0 - p0)
t1 = _mm_and_si128(t1, *mask); // mask filter values we don't care about
t2 = _mm_set1_epi8(3);
t3 = _mm_set1_epi8(4);
t2 = _mm_adds_epi8(t1, t2); // 3 * (q0 - p0) + (p1 - q1) + 3
t3 = _mm_adds_epi8(t1, t3); // 3 * (q0 - p0) + (p1 - q1) + 4
t2 = _mm_adds_epi8(t1, k3); // 3 * (q0 - p0) + hev(p1 - q1) + 3
t3 = _mm_adds_epi8(t1, k4); // 3 * (q0 - p0) + hev(p1 - q1) + 4
SignedShift8b(&t2); // (3 * (q0 - p0) + hev(p1 - q1) + 3) >> 3
SignedShift8b(&t3); // (3 * (q0 - p0) + hev(p1 - q1) + 4) >> 3
*p0 = _mm_adds_epi8(*p0, t2); // p0 += t2