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remove some duplicate FlipSign()

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ApplyFilter2NoFlip is the new variant of ApplyFilter2 without the sign-flip

Change-Id: I2af54bd1499118c8321183e42251d265ba76219c
This commit is contained in:
Pascal Massimino 2015-06-05 02:19:42 -07:00 committed by skal
parent 64960da9e1
commit 751506c484
1 changed files with 17 additions and 12 deletions
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29
src/dsp/dec_neon.c
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@ -479,6 +479,21 @@ static int8x16_t GetBaseDelta0(const int8x16_t p0, const int8x16_t q0) {
//------------------------------------------------------------------------------
static void ApplyFilter2NoFlip(const int8x16_t p0s, const int8x16_t q0s,
const int8x16_t delta,
int8x16_t* const op0, int8x16_t* const oq0) {
const int8x16_t kCst3 = vdupq_n_s8(0x03);
const int8x16_t kCst4 = vdupq_n_s8(0x04);
const int8x16_t delta_p3 = vqaddq_s8(delta, kCst3);
const int8x16_t delta_p4 = vqaddq_s8(delta, kCst4);
const int8x16_t delta3 = vshrq_n_s8(delta_p3, 3);
const int8x16_t delta4 = vshrq_n_s8(delta_p4, 3);
*op0 = vqaddq_s8(p0s, delta3);
*oq0 = vqsubq_s8(q0s, delta4);
}
#if defined(WEBP_USE_INTRINSICS)
static void ApplyFilter2(const int8x16_t p0s, const int8x16_t q0s,
const int8x16_t delta,
uint8x16_t* const op0, uint8x16_t* const oq0) {
@ -494,8 +509,6 @@ static void ApplyFilter2(const int8x16_t p0s, const int8x16_t q0s,
*oq0 = FlipSignBack(sq0);
}
#if defined(WEBP_USE_INTRINSICS)
static void DoFilter2(const uint8x16_t p1, const uint8x16_t p0,
const uint8x16_t q0, const uint8x16_t q1,
const uint8x16_t mask,
@ -721,11 +734,7 @@ static void DoFilter4(
const int8x16_t delta = GetBaseDelta(p1s, p0s, q0s, q1s);
const int8x16_t simple_lf_delta =
vandq_s8(delta, vreinterpretq_s8_u8(simple_lf_mask));
uint8x16_t tmp_p0, tmp_q0;
ApplyFilter2(p0s, q0s, simple_lf_delta, &tmp_p0, &tmp_q0);
// TODO(skal): avoid the double FlipSign() in ApplyFilter2() and here
p0s = FlipSign(tmp_p0);
q0s = FlipSign(tmp_q0);
ApplyFilter2NoFlip(p0s, q0s, simple_lf_delta, &p0s, &q0s);
}
// do_filter4 part (complex loopfilter on pixels without hev)
@ -797,11 +806,7 @@ static void DoFilter6(
{
const int8x16_t simple_lf_delta =
vandq_s8(delta0, vreinterpretq_s8_u8(simple_lf_mask));
uint8x16_t tmp_p0, tmp_q0;
ApplyFilter2(p0s, q0s, simple_lf_delta, &tmp_p0, &tmp_q0);
// TODO(skal): avoid the double FlipSign() in ApplyFilter2() and here
p0s = FlipSign(tmp_p0);
q0s = FlipSign(tmp_q0);
ApplyFilter2NoFlip(p0s, q0s, simple_lf_delta, &p0s, &q0s);
}
// do_filter6 part (complex loopfilter on pixels without hev)