void srslte_tdec_sse_decision(srslte_tdec_sse_t * h, uint8_t *output, uint32_t long_cb)
{
__m128i zero = _mm_set1_epi16(0);
__m128i lsb_mask = _mm_set1_epi16(1);
__m128i *appPtr = (__m128i*) h->app1;
__m128i *outPtr = (__m128i*) output;
__m128i ap, out, out0, out1;
for (uint32_t i = 0; i < long_cb/16; i++) {
ap = _mm_load_si128(appPtr); appPtr++;
out0 = _mm_and_si128(_mm_cmpgt_epi16(ap, zero), lsb_mask);
ap = _mm_load_si128(appPtr); appPtr++;
out1 = _mm_and_si128(_mm_cmpgt_epi16(ap, zero), lsb_mask);
out = _mm_packs_epi16(out0, out1);
_mm_store_si128(outPtr, out);
outPtr++;
}
if (long_cb%16) {
for (int i=0;i<8;i++) {
output[long_cb-8+i] = h->app1[long_cb-8+i]>0?1:0;
}
}
}
static INLINE unsigned
build_mask_linear(int c, int dcdx, int dcdy)
{
__m128i cstep0 = _mm_setr_epi32(c, c+dcdx, c+dcdx*2, c+dcdx*3);
__m128i xdcdy = _mm_set1_epi32(dcdy);
/* Get values across the quad
*/
__m128i cstep1 = _mm_add_epi32(cstep0, xdcdy);
__m128i cstep2 = _mm_add_epi32(cstep1, xdcdy);
__m128i cstep3 = _mm_add_epi32(cstep2, xdcdy);
/* pack pairs of results into epi16
*/
__m128i cstep01 = _mm_packs_epi32(cstep0, cstep1);
__m128i cstep23 = _mm_packs_epi32(cstep2, cstep3);
/* pack into epi8, preserving sign bits
*/
__m128i result = _mm_packs_epi16(cstep01, cstep23);
/* extract sign bits to create mask
*/
return _mm_movemask_epi8(result);
}
static int GetResidualCostSSE2(int ctx0, const VP8Residual* const res) {
uint8_t levels[16], ctxs[16];
uint16_t abs_levels[16];
int n = res->first;
// should be prob[VP8EncBands[n]], but it's equivalent for n=0 or 1
const int p0 = res->prob[n][ctx0][0];
CostArrayPtr const costs = res->costs;
const uint16_t* t = costs[n][ctx0];
// bit_cost(1, p0) is already incorporated in t[] tables, but only if ctx != 0
// (as required by the syntax). For ctx0 == 0, we need to add it here or it'll
// be missing during the loop.
int cost = (ctx0 == 0) ? VP8BitCost(1, p0) : 0;
if (res->last < 0) {
return VP8BitCost(0, p0);
}
{ // precompute clamped levels and contexts, packed to 8b.
const __m128i zero = _mm_setzero_si128();
const __m128i kCst2 = _mm_set1_epi8(2);
const __m128i kCst67 = _mm_set1_epi8(MAX_VARIABLE_LEVEL);
const __m128i c0 = _mm_loadu_si128((const __m128i*)&res->coeffs[0]);
const __m128i c1 = _mm_loadu_si128((const __m128i*)&res->coeffs[8]);
const __m128i D0 = _mm_sub_epi16(zero, c0);
const __m128i D1 = _mm_sub_epi16(zero, c1);
const __m128i E0 = _mm_max_epi16(c0, D0); // abs(v), 16b
const __m128i E1 = _mm_max_epi16(c1, D1);
const __m128i F = _mm_packs_epi16(E0, E1);
const __m128i G = _mm_min_epu8(F, kCst2); // context = 0,1,2
const __m128i H = _mm_min_epu8(F, kCst67); // clamp_level in [0..67]
_mm_storeu_si128((__m128i*)&ctxs[0], G);
_mm_storeu_si128((__m128i*)&levels[0], H);
_mm_storeu_si128((__m128i*)&abs_levels[0], E0);
_mm_storeu_si128((__m128i*)&abs_levels[8], E1);
}
for (; n < res->last; ++n) {
const int ctx = ctxs[n];
const int level = levels[n];
const int flevel = abs_levels[n]; // full level
cost += VP8LevelFixedCosts[flevel] + t[level]; // simplified VP8LevelCost()
t = costs[n + 1][ctx];
}
// Last coefficient is always non-zero
{
const int level = levels[n];
const int flevel = abs_levels[n];
assert(flevel != 0);
cost += VP8LevelFixedCosts[flevel] + t[level];
if (n < 15) {
const int b = VP8EncBands[n + 1];
const int ctx = ctxs[n];
const int last_p0 = res->prob[b][ctx][0];
cost += VP8BitCost(0, last_p0);
}
}
return cost;
}
__m128i test_mm_packs_epi16(__m128i A, __m128i B) {
// DAG-LABEL: test_mm_packs_epi16
// DAG: call <16 x i8> @llvm.x86.sse2.packsswb.128(<8 x i16> %{{.*}}, <8 x i16> %{{.*}})
//
// ASM-LABEL: test_mm_packs_epi16
// ASM: packsswb
return _mm_packs_epi16(A, B);
}
mlib_status
__mlib_VectorConvert_S8_S32_Sat(
mlib_s8 *z,
const mlib_s32 *x,
mlib_s32 n)
{
if (n < 1)
return (MLIB_FAILURE);
mlib_s32 i, ax, az, nstep, n1, n2, n3, xval;
mlib_s32 *px = (mlib_s32 *)x;
mlib_s8 *pz = (mlib_s8 *)z;
__m128i zbuf, buf1, buf2, buf3, buf4, mask;
ax = (mlib_addr)x & 15;
az = (mlib_addr)z & 15;
nstep = 16 / sizeof (mlib_s8);
n1 = ((16 - ax) & 15) / sizeof (mlib_s32);
n2 = (n - n1) / nstep;
n3 = n - n1 - n2 * nstep;
if (n2 < 1) {
for (i = 0; i < n; i++) {
xval = *px++;
SAT_S8(xval);
*pz++ = xval;
}
} else {
for (i = 0; i < n1; i++) {
xval = *px++;
SAT_S8(xval);
*pz++ = xval;
}
for (i = 0; i < n2; i++) {
buf1 = _mm_load_si128((__m128i *)px);
buf2 = _mm_load_si128((__m128i *)px + 1);
buf3 = _mm_load_si128((__m128i *)px + 2);
buf4 = _mm_load_si128((__m128i *)px + 3);
buf1 = _mm_packs_epi32(buf1, buf2);
buf3 = _mm_packs_epi32(buf3, buf4);
zbuf = _mm_packs_epi16(buf1, buf3);
_mm_storeu_si128((__m128i *)pz, zbuf);
px += nstep;
pz += nstep;
}
for (i = 0; i < n3; i++) {
xval = *px++;
SAT_S8(xval);
*pz++ = xval;
}
}
return (MLIB_SUCCESS);
}
// Shift each byte of "x" by 3 bits while preserving by the sign bit.
static WEBP_INLINE void SignedShift8b(__m128i* const x) {
const __m128i zero = _mm_setzero_si128();
const __m128i signs = _mm_cmpgt_epi8(zero, *x);
const __m128i lo_0 = _mm_unpacklo_epi8(*x, signs); // s8 -> s16 sign extend
const __m128i hi_0 = _mm_unpackhi_epi8(*x, signs);
const __m128i lo_1 = _mm_srai_epi16(lo_0, 3);
const __m128i hi_1 = _mm_srai_epi16(hi_0, 3);
*x = _mm_packs_epi16(lo_1, hi_1);
}
static INLINE void
build_masks(int c,
int cdiff,
int dcdx,
int dcdy,
unsigned *outmask,
unsigned *partmask)
{
__m128i cstep0 = _mm_setr_epi32(c, c+dcdx, c+dcdx*2, c+dcdx*3);
__m128i xdcdy = _mm_set1_epi32(dcdy);
/* Get values across the quad
*/
__m128i cstep1 = _mm_add_epi32(cstep0, xdcdy);
__m128i cstep2 = _mm_add_epi32(cstep1, xdcdy);
__m128i cstep3 = _mm_add_epi32(cstep2, xdcdy);
{
__m128i cstep01, cstep23, result;
cstep01 = _mm_packs_epi32(cstep0, cstep1);
cstep23 = _mm_packs_epi32(cstep2, cstep3);
result = _mm_packs_epi16(cstep01, cstep23);
*outmask |= _mm_movemask_epi8(result);
}
{
__m128i cio4 = _mm_set1_epi32(cdiff);
__m128i cstep01, cstep23, result;
cstep0 = _mm_add_epi32(cstep0, cio4);
cstep1 = _mm_add_epi32(cstep1, cio4);
cstep2 = _mm_add_epi32(cstep2, cio4);
cstep3 = _mm_add_epi32(cstep3, cio4);
cstep01 = _mm_packs_epi32(cstep0, cstep1);
cstep23 = _mm_packs_epi32(cstep2, cstep3);
result = _mm_packs_epi16(cstep01, cstep23);
*partmask |= _mm_movemask_epi8(result);
}
}
// Updates values of 2 pixels at MB edge during complex filtering.
// Update operations:
// q = q - delta and p = p + delta; where delta = [(a_hi >> 7), (a_lo >> 7)]
// Pixels 'pi' and 'qi' are int8_t on input, uint8_t on output (sign flip).
static WEBP_INLINE void Update2Pixels(__m128i* const pi, __m128i* const qi,
const __m128i* const a0_lo,
const __m128i* const a0_hi) {
const __m128i a1_lo = _mm_srai_epi16(*a0_lo, 7);
const __m128i a1_hi = _mm_srai_epi16(*a0_hi, 7);
const __m128i delta = _mm_packs_epi16(a1_lo, a1_hi);
const __m128i sign_bit = _mm_set1_epi8(0x80);
*pi = _mm_adds_epi8(*pi, delta);
*qi = _mm_subs_epi8(*qi, delta);
FLIP_SIGN_BIT2(*pi, *qi);
}
static void aom_filter_block1d8_h4_ssse3(
const uint8_t *src_ptr, ptrdiff_t src_pixels_per_line, uint8_t *output_ptr,
ptrdiff_t output_pitch, uint32_t output_height, const int16_t *filter) {
__m128i filtersReg;
__m128i addFilterReg32, filt2Reg, filt3Reg;
__m128i secondFilters, thirdFilters;
__m128i srcRegFilt32b1_1, srcRegFilt32b2, srcRegFilt32b3;
__m128i srcReg32b1;
unsigned int i;
src_ptr -= 3;
addFilterReg32 = _mm_set1_epi16(32);
filtersReg = _mm_loadu_si128((const __m128i *)filter);
filtersReg = _mm_srai_epi16(filtersReg, 1);
// converting the 16 bit (short) to 8 bit (byte) and have the same data
// in both lanes of 128 bit register.
filtersReg = _mm_packs_epi16(filtersReg, filtersReg);
// duplicate only the second 16 bits (third and forth byte)
// across 256 bit register
secondFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi16(0x302u));
// duplicate only the third 16 bits (fifth and sixth byte)
// across 256 bit register
thirdFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi16(0x504u));
filt2Reg = _mm_load_si128((__m128i const *)(filt_h4 + 32));
filt3Reg = _mm_load_si128((__m128i const *)(filt_h4 + 32 * 2));
for (i = output_height; i > 0; i -= 1) {
srcReg32b1 = _mm_loadu_si128((const __m128i *)src_ptr);
// filter the source buffer
srcRegFilt32b3 = _mm_shuffle_epi8(srcReg32b1, filt2Reg);
srcRegFilt32b2 = _mm_shuffle_epi8(srcReg32b1, filt3Reg);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt32b3 = _mm_maddubs_epi16(srcRegFilt32b3, secondFilters);
srcRegFilt32b2 = _mm_maddubs_epi16(srcRegFilt32b2, thirdFilters);
srcRegFilt32b1_1 = _mm_adds_epi16(srcRegFilt32b3, srcRegFilt32b2);
// shift by 6 bit each 16 bit
srcRegFilt32b1_1 = _mm_adds_epi16(srcRegFilt32b1_1, addFilterReg32);
srcRegFilt32b1_1 = _mm_srai_epi16(srcRegFilt32b1_1, 6);
// shrink to 8 bit each 16 bits
srcRegFilt32b1_1 = _mm_packus_epi16(srcRegFilt32b1_1, _mm_setzero_si128());
src_ptr += src_pixels_per_line;
_mm_storel_epi64((__m128i *)output_ptr, srcRegFilt32b1_1);
output_ptr += output_pitch;
}
}
void demod_16qam_lte_b_sse(const cf_t *symbols, int8_t *llr, int nsymbols) {
float *symbolsPtr = (float*) symbols;
__m128i *resultPtr = (__m128i*) llr;
__m128 symbol1, symbol2, symbol3, symbol4;
__m128i symbol_i1, symbol_i2, symbol_i3, symbol_i4, symbol_i, symbol_abs, symbol_12, symbol_34;
__m128i offset = _mm_set1_epi8(2*SCALE_BYTE_CONV_QAM16/sqrt(10));
__m128i result1n, result1a, result2n, result2a;
__m128 scale_v = _mm_set1_ps(-SCALE_BYTE_CONV_QAM16);
__m128i shuffle_negated_1 = _mm_set_epi8(0xff,0xff,7,6,0xff,0xff,5,4,0xff,0xff,3,2,0xff,0xff,1,0);
__m128i shuffle_abs_1 = _mm_set_epi8(7,6,0xff,0xff,5,4,0xff,0xff,3,2,0xff,0xff,1,0,0xff,0xff);
__m128i shuffle_negated_2 = _mm_set_epi8(0xff,0xff,15,14,0xff,0xff,13,12,0xff,0xff,11,10,0xff,0xff,9,8);
__m128i shuffle_abs_2 = _mm_set_epi8(15,14,0xff,0xff,13,12,0xff,0xff,11,10,0xff,0xff,9,8,0xff,0xff);
for (int i=0;i<nsymbols/8;i++) {
symbol1 = _mm_load_ps(symbolsPtr); symbolsPtr+=4;
symbol2 = _mm_load_ps(symbolsPtr); symbolsPtr+=4;
symbol3 = _mm_load_ps(symbolsPtr); symbolsPtr+=4;
symbol4 = _mm_load_ps(symbolsPtr); symbolsPtr+=4;
symbol_i1 = _mm_cvtps_epi32(_mm_mul_ps(symbol1, scale_v));
symbol_i2 = _mm_cvtps_epi32(_mm_mul_ps(symbol2, scale_v));
symbol_i3 = _mm_cvtps_epi32(_mm_mul_ps(symbol3, scale_v));
symbol_i4 = _mm_cvtps_epi32(_mm_mul_ps(symbol4, scale_v));
symbol_12 = _mm_packs_epi32(symbol_i1, symbol_i2);
symbol_34 = _mm_packs_epi32(symbol_i3, symbol_i4);
symbol_i = _mm_packs_epi16(symbol_12, symbol_34);
symbol_abs = _mm_abs_epi8(symbol_i);
symbol_abs = _mm_sub_epi8(symbol_abs, offset);
result1n = _mm_shuffle_epi8(symbol_i, shuffle_negated_1);
result1a = _mm_shuffle_epi8(symbol_abs, shuffle_abs_1);
result2n = _mm_shuffle_epi8(symbol_i, shuffle_negated_2);
result2a = _mm_shuffle_epi8(symbol_abs, shuffle_abs_2);
_mm_store_si128(resultPtr, _mm_or_si128(result1n, result1a)); resultPtr++;
_mm_store_si128(resultPtr, _mm_or_si128(result2n, result2a)); resultPtr++;
}
// Demodulate last symbols
for (int i=8*(nsymbols/8);i<nsymbols;i++) {
short yre = (int8_t) (SCALE_BYTE_CONV_QAM16*crealf(symbols[i]));
short yim = (int8_t) (SCALE_BYTE_CONV_QAM16*cimagf(symbols[i]));
llr[4*i+0] = -yre;
llr[4*i+1] = -yim;
llr[4*i+2] = abs(yre)-2*SCALE_BYTE_CONV_QAM16/sqrt(10);
llr[4*i+3] = abs(yim)-2*SCALE_BYTE_CONV_QAM16/sqrt(10);
}
}
__m64 _m_packsswb(__m64 _MM1, __m64 _MM2)
{
__m128i lhs = {0}, rhs = {0};
lhs.m128i_i64[0] = _MM1.m64_i64;
rhs.m128i_i64[0] = _MM2.m64_i64;
lhs = _mm_packs_epi16(lhs, rhs);
_MM1.m64_i32[0] = lhs.m128i_i32[0];
_MM1.m64_i32[1] = lhs.m128i_i32[2];
return _MM1;
}
static void SetResidualCoeffsSSE2(const int16_t* const coeffs,
VP8Residual* const res) {
const __m128i c0 = _mm_loadu_si128((const __m128i*)(coeffs + 0));
const __m128i c1 = _mm_loadu_si128((const __m128i*)(coeffs + 8));
// Use SSE2 to compare 16 values with a single instruction.
const __m128i zero = _mm_setzero_si128();
const __m128i m0 = _mm_packs_epi16(c0, c1);
const __m128i m1 = _mm_cmpeq_epi8(m0, zero);
// Get the comparison results as a bitmask into 16bits. Negate the mask to get
// the position of entries that are not equal to zero. We don't need to mask
// out least significant bits according to res->first, since coeffs[0] is 0
// if res->first > 0.
const uint32_t mask = 0x0000ffffu ^ (uint32_t)_mm_movemask_epi8(m1);
// The position of the most significant non-zero bit indicates the position of
// the last non-zero value.
assert(res->first == 0 || coeffs[0] == 0);
res->last = mask ? BitsLog2Floor(mask) : -1;
res->coeffs = coeffs;
}
static void aom_filter_block1d4_h4_ssse3(
const uint8_t *src_ptr, ptrdiff_t src_pixels_per_line, uint8_t *output_ptr,
ptrdiff_t output_pitch, uint32_t output_height, const int16_t *filter) {
__m128i filtersReg;
__m128i addFilterReg32, filt1Reg, firstFilters, srcReg32b1, srcRegFilt32b1_1;
unsigned int i;
src_ptr -= 3;
addFilterReg32 = _mm_set1_epi16(32);
filtersReg = _mm_loadu_si128((const __m128i *)filter);
filtersReg = _mm_srai_epi16(filtersReg, 1);
// converting the 16 bit (short) to 8 bit (byte) and have the same data
// in both lanes of 128 bit register.
filtersReg = _mm_packs_epi16(filtersReg, filtersReg);
firstFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi32(0x5040302u));
filt1Reg = _mm_load_si128((__m128i const *)(filtd4));
for (i = output_height; i > 0; i -= 1) {
// load the 2 strides of source
srcReg32b1 = _mm_loadu_si128((const __m128i *)src_ptr);
// filter the source buffer
srcRegFilt32b1_1 = _mm_shuffle_epi8(srcReg32b1, filt1Reg);
// multiply 4 adjacent elements with the filter and add the result
srcRegFilt32b1_1 = _mm_maddubs_epi16(srcRegFilt32b1_1, firstFilters);
srcRegFilt32b1_1 = _mm_hadds_epi16(srcRegFilt32b1_1, _mm_setzero_si128());
// shift by 6 bit each 16 bit
srcRegFilt32b1_1 = _mm_adds_epi16(srcRegFilt32b1_1, addFilterReg32);
srcRegFilt32b1_1 = _mm_srai_epi16(srcRegFilt32b1_1, 6);
// shrink to 8 bit each 16 bits, the first lane contain the first
// convolve result and the second lane contain the second convolve result
srcRegFilt32b1_1 = _mm_packus_epi16(srcRegFilt32b1_1, _mm_setzero_si128());
src_ptr += src_pixels_per_line;
*((uint32_t *)(output_ptr)) = _mm_cvtsi128_si32(srcRegFilt32b1_1);
output_ptr += output_pitch;
}
}
static INLINE unsigned
sign_bits4(const __m128i *cstep, int cdiff)
{
/* Adjust the step values
*/
__m128i cio4 = _mm_set1_epi32(cdiff);
__m128i cstep0 = _mm_add_epi32(cstep[0], cio4);
__m128i cstep1 = _mm_add_epi32(cstep[1], cio4);
__m128i cstep2 = _mm_add_epi32(cstep[2], cio4);
__m128i cstep3 = _mm_add_epi32(cstep[3], cio4);
/* Pack down to epi8
*/
__m128i cstep01 = _mm_packs_epi32(cstep0, cstep1);
__m128i cstep23 = _mm_packs_epi32(cstep2, cstep3);
__m128i result = _mm_packs_epi16(cstep01, cstep23);
/* Extract the sign bits
*/
return _mm_movemask_epi8(result);
}
static void GF_FUNC_ALIGN VS_CC
float_to_dst_8bit(const float *srcp, uint8_t *dstp, int width, int height,
int src_stride, int dst_stride, float th, int bits)
{
__m128 tmax = _mm_set1_ps(th);
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x += 16) {
__m128 xmf0 = _mm_cmpge_ps(_mm_load_ps(srcp + x), tmax);
__m128 xmf1 = _mm_cmpge_ps(_mm_load_ps(srcp + x + 4), tmax);
__m128 xmf2 = _mm_cmpge_ps(_mm_load_ps(srcp + x + 8), tmax);
__m128 xmf3 = _mm_cmpge_ps(_mm_load_ps(srcp + x + 12), tmax);
__m128i xmi0 = _mm_packs_epi32(_mm_castps_si128(xmf0),
_mm_castps_si128(xmf1));
__m128i xmi1 = _mm_packs_epi32(_mm_castps_si128(xmf2),
_mm_castps_si128(xmf3));
xmi0 = _mm_packs_epi16(xmi0, xmi1);
_mm_store_si128((__m128i *)(dstp + x), xmi0);
}
srcp += src_stride;
dstp += dst_stride;
}
}
/**
* SSE Implementation of \c cnsFormula (subroutine of cnsResponse).
* \c scale, \c gaussI2 and \c regVar are 32bit floats (gaussI2 as A and B).
* \c sobelX, \c sobelY, \c gaussI are signed short.
* \c result is a packed vector of unsigned signed 8bit number with the x and y component
* alternating and \c offset (unsigned char) added.
*/
ALWAYSINLINE static void cnsFormula(__m128i& result, __m128i sobelX, __m128i sobelY, __m128i& gaussI,
const __m128& gaussI2A, const __m128& gaussI2B,
const __m128& scale, const __m128& regVar, __m128i offset)
{
__m128 gaussIA = _mm_cvtepi32_ps(_mm_unpacklo_epi16(gaussI, _mm_setzero_si128()));
__m128 gaussIB = _mm_cvtepi32_ps(_mm_unpackhi_epi16(gaussI, _mm_setzero_si128()));
__m128 factorA = _mm_add_ps(_mm_sub_ps(gaussI2A, _mm_mul_ps(gaussIA, gaussIA)), regVar); // gaussI2-gaussI^2+regVar
__m128 factorB = _mm_add_ps(_mm_sub_ps(gaussI2B, _mm_mul_ps(gaussIB, gaussIB)), regVar);
factorA = _mm_mul_ps(_mm_rsqrt_ps(factorA), scale); // scale/sqrt(gaussI2-gaussI^2+regVar)
factorB = _mm_mul_ps(_mm_rsqrt_ps(factorB), scale);
// (2^-11)*sobelX*(scale/sqrt(gaussI2-gaussI^2+regVar))
__m128i factor = _mm_packs_epi32(_mm_cvtps_epi32(factorA), _mm_cvtps_epi32(factorB));
__m128i resultXepi16 = _mm_mulhi_epi16(_mm_slli_epi16(sobelX, 5), factor);
__m128i resultYepi16 = _mm_mulhi_epi16(_mm_slli_epi16(sobelY, 5), factor);
// Convert to 8bit and interleave X and Y
// the second argument of packs duplicates values to higher bytes, but these are ignored later, unpacklo interleaves X and Y
__m128i resultepi8 = _mm_unpacklo_epi8(_mm_packs_epi16(resultXepi16, resultXepi16), _mm_packs_epi16(resultYepi16, resultYepi16));
result = _mm_add_epi8(resultepi8, offset); // add offset, switching to epu8
}
void demod_64qam_lte_b_sse(const cf_t *symbols, int8_t *llr, int nsymbols)
{
float *symbolsPtr = (float*) symbols;
__m128i *resultPtr = (__m128i*) llr;
__m128 symbol1, symbol2, symbol3, symbol4;
__m128i symbol_i1, symbol_i2, symbol_i3, symbol_i4, symbol_i, symbol_abs, symbol_abs2,symbol_12, symbol_34;
__m128i offset1 = _mm_set1_epi8(4*SCALE_BYTE_CONV_QAM64/sqrt(42));
__m128i offset2 = _mm_set1_epi8(2*SCALE_BYTE_CONV_QAM64/sqrt(42));
__m128 scale_v = _mm_set1_ps(-SCALE_BYTE_CONV_QAM64);
__m128i result11, result12, result13, result22, result21,result23, result31, result32, result33;
__m128i shuffle_negated_1 = _mm_set_epi8(0xff,0xff,5,4,0xff,0xff,0xff,0xff,3,2,0xff,0xff,0xff,0xff,1,0);
__m128i shuffle_negated_2 = _mm_set_epi8(11,10,0xff,0xff,0xff,0xff,9,8,0xff,0xff,0xff,0xff,7,6,0xff,0xff);
__m128i shuffle_negated_3 = _mm_set_epi8(0xff,0xff,0xff,0xff,15,14,0xff,0xff,0xff,0xff,13,12,0xff,0xff,0xff,0xff);
__m128i shuffle_abs_1 = _mm_set_epi8(5,4,0xff,0xff,0xff,0xff,3,2,0xff,0xff,0xff,0xff,1,0,0xff,0xff);
__m128i shuffle_abs_2 = _mm_set_epi8(0xff,0xff,0xff,0xff,9,8,0xff,0xff,0xff,0xff,7,6,0xff,0xff,0xff,0xff);
__m128i shuffle_abs_3 = _mm_set_epi8(0xff,0xff,15,14,0xff,0xff,0xff,0xff,13,12,0xff,0xff,0xff,0xff,11,10);
__m128i shuffle_abs2_1 = _mm_set_epi8(0xff,0xff,0xff,0xff,3,2,0xff,0xff,0xff,0xff,1,0,0xff,0xff,0xff,0xff);
__m128i shuffle_abs2_2 = _mm_set_epi8(0xff,0xff,9,8,0xff,0xff,0xff,0xff,7,6,0xff,0xff,0xff,0xff,5,4);
__m128i shuffle_abs2_3 = _mm_set_epi8(15,14,0xff,0xff,0xff,0xff,13,12,0xff,0xff,0xff,0xff,11,10,0xff,0xff);
for (int i=0;i<nsymbols/8;i++) {
symbol1 = _mm_load_ps(symbolsPtr); symbolsPtr+=4;
symbol2 = _mm_load_ps(symbolsPtr); symbolsPtr+=4;
symbol3 = _mm_load_ps(symbolsPtr); symbolsPtr+=4;
symbol4 = _mm_load_ps(symbolsPtr); symbolsPtr+=4;
symbol_i1 = _mm_cvtps_epi32(_mm_mul_ps(symbol1, scale_v));
symbol_i2 = _mm_cvtps_epi32(_mm_mul_ps(symbol2, scale_v));
symbol_i3 = _mm_cvtps_epi32(_mm_mul_ps(symbol3, scale_v));
symbol_i4 = _mm_cvtps_epi32(_mm_mul_ps(symbol4, scale_v));
symbol_12 = _mm_packs_epi32(symbol_i1, symbol_i2);
symbol_34 = _mm_packs_epi32(symbol_i3, symbol_i4);
symbol_i = _mm_packs_epi16(symbol_12, symbol_34);
symbol_abs = _mm_abs_epi8(symbol_i);
symbol_abs = _mm_sub_epi8(symbol_abs, offset1);
symbol_abs2 = _mm_sub_epi8(_mm_abs_epi8(symbol_abs), offset2);
result11 = _mm_shuffle_epi8(symbol_i, shuffle_negated_1);
result12 = _mm_shuffle_epi8(symbol_abs, shuffle_abs_1);
result13 = _mm_shuffle_epi8(symbol_abs2, shuffle_abs2_1);
result21 = _mm_shuffle_epi8(symbol_i, shuffle_negated_2);
result22 = _mm_shuffle_epi8(symbol_abs, shuffle_abs_2);
result23 = _mm_shuffle_epi8(symbol_abs2, shuffle_abs2_2);
result31 = _mm_shuffle_epi8(symbol_i, shuffle_negated_3);
result32 = _mm_shuffle_epi8(symbol_abs, shuffle_abs_3);
result33 = _mm_shuffle_epi8(symbol_abs2, shuffle_abs2_3);
_mm_store_si128(resultPtr, _mm_or_si128(_mm_or_si128(result11, result12),result13)); resultPtr++;
_mm_store_si128(resultPtr, _mm_or_si128(_mm_or_si128(result21, result22),result23)); resultPtr++;
_mm_store_si128(resultPtr, _mm_or_si128(_mm_or_si128(result31, result32),result33)); resultPtr++;
}
for (int i=8*(nsymbols/8);i<nsymbols;i++) {
float yre = (int8_t) (SCALE_BYTE_CONV_QAM64*crealf(symbols[i]));
float yim = (int8_t) (SCALE_BYTE_CONV_QAM64*cimagf(symbols[i]));
llr[6*i+0] = -yre;
llr[6*i+1] = -yim;
llr[6*i+2] = abs(yre)-4*SCALE_BYTE_CONV_QAM64/sqrt(42);
llr[6*i+3] = abs(yim)-4*SCALE_BYTE_CONV_QAM64/sqrt(42);
llr[6*i+4] = abs(llr[6*i+2])-2*SCALE_BYTE_CONV_QAM64/sqrt(42);
llr[6*i+5] = abs(llr[6*i+3])-2*SCALE_BYTE_CONV_QAM64/sqrt(42);
}
}
static WEBP_INLINE int DoQuantizeBlock(int16_t in[16], int16_t out[16],
const uint16_t* const sharpen,
const VP8Matrix* const mtx) {
const __m128i max_coeff_2047 = _mm_set1_epi16(MAX_LEVEL);
const __m128i zero = _mm_setzero_si128();
__m128i coeff0, coeff8;
__m128i out0, out8;
__m128i packed_out;
// Load all inputs.
// TODO(cduvivier): Make variable declarations and allocations aligned so that
// we can use _mm_load_si128 instead of _mm_loadu_si128.
__m128i in0 = _mm_loadu_si128((__m128i*)&in[0]);
__m128i in8 = _mm_loadu_si128((__m128i*)&in[8]);
const __m128i iq0 = _mm_loadu_si128((const __m128i*)&mtx->iq_[0]);
const __m128i iq8 = _mm_loadu_si128((const __m128i*)&mtx->iq_[8]);
const __m128i q0 = _mm_loadu_si128((const __m128i*)&mtx->q_[0]);
const __m128i q8 = _mm_loadu_si128((const __m128i*)&mtx->q_[8]);
// extract sign(in) (0x0000 if positive, 0xffff if negative)
const __m128i sign0 = _mm_cmpgt_epi16(zero, in0);
const __m128i sign8 = _mm_cmpgt_epi16(zero, in8);
// coeff = abs(in) = (in ^ sign) - sign
coeff0 = _mm_xor_si128(in0, sign0);
coeff8 = _mm_xor_si128(in8, sign8);
coeff0 = _mm_sub_epi16(coeff0, sign0);
coeff8 = _mm_sub_epi16(coeff8, sign8);
// coeff = abs(in) + sharpen
if (sharpen != NULL) {
const __m128i sharpen0 = _mm_loadu_si128((const __m128i*)&sharpen[0]);
const __m128i sharpen8 = _mm_loadu_si128((const __m128i*)&sharpen[8]);
coeff0 = _mm_add_epi16(coeff0, sharpen0);
coeff8 = _mm_add_epi16(coeff8, sharpen8);
}
// out = (coeff * iQ + B) >> QFIX
{
// doing calculations with 32b precision (QFIX=17)
// out = (coeff * iQ)
const __m128i coeff_iQ0H = _mm_mulhi_epu16(coeff0, iq0);
const __m128i coeff_iQ0L = _mm_mullo_epi16(coeff0, iq0);
const __m128i coeff_iQ8H = _mm_mulhi_epu16(coeff8, iq8);
const __m128i coeff_iQ8L = _mm_mullo_epi16(coeff8, iq8);
__m128i out_00 = _mm_unpacklo_epi16(coeff_iQ0L, coeff_iQ0H);
__m128i out_04 = _mm_unpackhi_epi16(coeff_iQ0L, coeff_iQ0H);
__m128i out_08 = _mm_unpacklo_epi16(coeff_iQ8L, coeff_iQ8H);
__m128i out_12 = _mm_unpackhi_epi16(coeff_iQ8L, coeff_iQ8H);
// out = (coeff * iQ + B)
const __m128i bias_00 = _mm_loadu_si128((const __m128i*)&mtx->bias_[0]);
const __m128i bias_04 = _mm_loadu_si128((const __m128i*)&mtx->bias_[4]);
const __m128i bias_08 = _mm_loadu_si128((const __m128i*)&mtx->bias_[8]);
const __m128i bias_12 = _mm_loadu_si128((const __m128i*)&mtx->bias_[12]);
out_00 = _mm_add_epi32(out_00, bias_00);
out_04 = _mm_add_epi32(out_04, bias_04);
out_08 = _mm_add_epi32(out_08, bias_08);
out_12 = _mm_add_epi32(out_12, bias_12);
// out = QUANTDIV(coeff, iQ, B, QFIX)
out_00 = _mm_srai_epi32(out_00, QFIX);
out_04 = _mm_srai_epi32(out_04, QFIX);
out_08 = _mm_srai_epi32(out_08, QFIX);
out_12 = _mm_srai_epi32(out_12, QFIX);
// pack result as 16b
out0 = _mm_packs_epi32(out_00, out_04);
out8 = _mm_packs_epi32(out_08, out_12);
// if (coeff > 2047) coeff = 2047
out0 = _mm_min_epi16(out0, max_coeff_2047);
out8 = _mm_min_epi16(out8, max_coeff_2047);
}
// get sign back (if (sign[j]) out_n = -out_n)
out0 = _mm_xor_si128(out0, sign0);
out8 = _mm_xor_si128(out8, sign8);
out0 = _mm_sub_epi16(out0, sign0);
out8 = _mm_sub_epi16(out8, sign8);
// in = out * Q
in0 = _mm_mullo_epi16(out0, q0);
in8 = _mm_mullo_epi16(out8, q8);
_mm_storeu_si128((__m128i*)&in[0], in0);
_mm_storeu_si128((__m128i*)&in[8], in8);
// zigzag the output before storing it.
//
// The zigzag pattern can almost be reproduced with a small sequence of
// shuffles. After it, we only need to swap the 7th (ending up in third
// position instead of twelfth) and 8th values.
{
__m128i outZ0, outZ8;
outZ0 = _mm_shufflehi_epi16(out0, _MM_SHUFFLE(2, 1, 3, 0));
outZ0 = _mm_shuffle_epi32 (outZ0, _MM_SHUFFLE(3, 1, 2, 0));
outZ0 = _mm_shufflehi_epi16(outZ0, _MM_SHUFFLE(3, 1, 0, 2));
outZ8 = _mm_shufflelo_epi16(out8, _MM_SHUFFLE(3, 0, 2, 1));
outZ8 = _mm_shuffle_epi32 (outZ8, _MM_SHUFFLE(3, 1, 2, 0));
outZ8 = _mm_shufflelo_epi16(outZ8, _MM_SHUFFLE(1, 3, 2, 0));
_mm_storeu_si128((__m128i*)&out[0], outZ0);
_mm_storeu_si128((__m128i*)&out[8], outZ8);
packed_out = _mm_packs_epi16(outZ0, outZ8);
}
{
const int16_t outZ_12 = out[12];
const int16_t outZ_3 = out[3];
out[3] = outZ_12;
out[12] = outZ_3;
}
// detect if all 'out' values are zeroes or not
return (_mm_movemask_epi8(_mm_cmpeq_epi8(packed_out, zero)) != 0xffff);
}
void alphaBlendSSE_8u(Mat& src1, Mat& src2, Mat& alpha, Mat& dest)
{
if(dest.empty())dest.create(src1.size(),CV_8U);
const int imsize = (src1.size().area()/16);
uchar* s1 = src1.data;
uchar* s2 = src2.data;
uchar* a = alpha.data;
uchar* d = dest.data;
const __m128i zero = _mm_setzero_si128();
const __m128i amax = _mm_set1_epi8(char(255));
int i=0;
if(s1==d)
{
for(;i<imsize;++i)
{
__m128i ms1h = _mm_load_si128((__m128i*)(s1));
__m128i ms2h = _mm_load_si128((__m128i*)(s2));
__m128i mah = _mm_load_si128((__m128i*)(a));
__m128i imah = _mm_sub_epi8(amax,mah);
__m128i ms1l = _mm_unpacklo_epi8(ms1h, zero);
ms1h = _mm_unpackhi_epi8(ms1h, zero);
__m128i ms2l = _mm_unpacklo_epi8(ms2h, zero);
ms2h = _mm_unpackhi_epi8(ms2h, zero);
__m128i mal = _mm_unpacklo_epi8(mah, zero);
mah = _mm_unpackhi_epi8(mah, zero);
__m128i imal = _mm_unpacklo_epi8(imah, zero);
imah = _mm_unpackhi_epi8(imah, zero);
ms1l = _mm_mullo_epi16(ms1l,mal);
ms2l = _mm_mullo_epi16(ms2l,imal);
ms1l = _mm_add_epi16(ms1l,ms2l);
//ms1l = _mm_srli_epi16(ms1l,8);
ms1l = _mm_srai_epi16(ms1l,8);
ms1h = _mm_mullo_epi16(ms1h,mah);
ms2h = _mm_mullo_epi16(ms2h,imah);
ms1h = _mm_add_epi16(ms1h,ms2h);
//ms1h = _mm_srli_epi16(ms1h,8);
ms1h = _mm_srai_epi16(ms1h,8);
_mm_stream_si128((__m128i*)s1,_mm_packs_epi16(ms1l,ms1h));
s1+=16;
s2+=16;
a+=16;
}
}
else
{
for(;i<imsize;++i)
{
__m128i ms1h = _mm_load_si128((__m128i*)(s1));
__m128i ms2h = _mm_load_si128((__m128i*)(s2));
__m128i mah = _mm_load_si128((__m128i*)(a));
__m128i imah = _mm_sub_epi8(amax,mah);
__m128i ms1l = _mm_unpacklo_epi8(ms1h, zero);
ms1h = _mm_unpackhi_epi8(ms1h, zero);
__m128i ms2l = _mm_unpacklo_epi8(ms2h, zero);
ms2h = _mm_unpackhi_epi8(ms2h, zero);
__m128i mal = _mm_unpacklo_epi8(mah, zero);
mah = _mm_unpackhi_epi8(mah, zero);
__m128i imal = _mm_unpacklo_epi8(imah, zero);
imah = _mm_unpackhi_epi8(imah, zero);
ms1l = _mm_mullo_epi16(ms1l,mal);
ms2l = _mm_mullo_epi16(ms2l,imal);
ms1l = _mm_add_epi16(ms1l,ms2l);
//ms1l = _mm_srli_epi16(ms1l,8);
ms1l = _mm_srai_epi16(ms1l,8);
ms1h = _mm_mullo_epi16(ms1h,mah);
ms2h = _mm_mullo_epi16(ms2h,imah);
ms1h = _mm_add_epi16(ms1h,ms2h);
//ms1h = _mm_srli_epi16(ms1h,8);
ms1h = _mm_srai_epi16(ms1h,8);
_mm_store_si128((__m128i*)d,_mm_packs_epi16(ms1l,ms1h));
s1+=16;
s2+=16;
a+=16;
d+=16;
}
}
{
uchar* s1 = src1.data;
uchar* s2 = src2.data;
uchar* a = alpha.data;
uchar* d = dest.data;
for(int n=i*16;n<src1.size().area();n++)
{
d[n] = (a[n]*s1[n] + (255-a[n])*s2[n])>>8;
}
}
}
// Simple quantization
static int QuantizeBlockSSE2(int16_t in[16], int16_t out[16],
int n, const VP8Matrix* const mtx) {
const __m128i max_coeff_2047 = _mm_set1_epi16(2047);
const __m128i zero = _mm_set1_epi16(0);
__m128i sign0, sign8;
__m128i coeff0, coeff8;
__m128i out0, out8;
__m128i packed_out;
// Load all inputs.
// TODO(cduvivier): Make variable declarations and allocations aligned so that
// we can use _mm_load_si128 instead of _mm_loadu_si128.
__m128i in0 = _mm_loadu_si128((__m128i*)&in[0]);
__m128i in8 = _mm_loadu_si128((__m128i*)&in[8]);
const __m128i sharpen0 = _mm_loadu_si128((__m128i*)&mtx->sharpen_[0]);
const __m128i sharpen8 = _mm_loadu_si128((__m128i*)&mtx->sharpen_[8]);
const __m128i iq0 = _mm_loadu_si128((__m128i*)&mtx->iq_[0]);
const __m128i iq8 = _mm_loadu_si128((__m128i*)&mtx->iq_[8]);
const __m128i bias0 = _mm_loadu_si128((__m128i*)&mtx->bias_[0]);
const __m128i bias8 = _mm_loadu_si128((__m128i*)&mtx->bias_[8]);
const __m128i q0 = _mm_loadu_si128((__m128i*)&mtx->q_[0]);
const __m128i q8 = _mm_loadu_si128((__m128i*)&mtx->q_[8]);
const __m128i zthresh0 = _mm_loadu_si128((__m128i*)&mtx->zthresh_[0]);
const __m128i zthresh8 = _mm_loadu_si128((__m128i*)&mtx->zthresh_[8]);
// sign(in) = in >> 15 (0x0000 if positive, 0xffff if negative)
sign0 = _mm_srai_epi16(in0, 15);
sign8 = _mm_srai_epi16(in8, 15);
// coeff = abs(in) = (in ^ sign) - sign
coeff0 = _mm_xor_si128(in0, sign0);
coeff8 = _mm_xor_si128(in8, sign8);
coeff0 = _mm_sub_epi16(coeff0, sign0);
coeff8 = _mm_sub_epi16(coeff8, sign8);
// coeff = abs(in) + sharpen
coeff0 = _mm_add_epi16(coeff0, sharpen0);
coeff8 = _mm_add_epi16(coeff8, sharpen8);
// if (coeff > 2047) coeff = 2047
coeff0 = _mm_min_epi16(coeff0, max_coeff_2047);
coeff8 = _mm_min_epi16(coeff8, max_coeff_2047);
// out = (coeff * iQ + B) >> QFIX;
{
// doing calculations with 32b precision (QFIX=17)
// out = (coeff * iQ)
__m128i coeff_iQ0H = _mm_mulhi_epu16(coeff0, iq0);
__m128i coeff_iQ0L = _mm_mullo_epi16(coeff0, iq0);
__m128i coeff_iQ8H = _mm_mulhi_epu16(coeff8, iq8);
__m128i coeff_iQ8L = _mm_mullo_epi16(coeff8, iq8);
__m128i out_00 = _mm_unpacklo_epi16(coeff_iQ0L, coeff_iQ0H);
__m128i out_04 = _mm_unpackhi_epi16(coeff_iQ0L, coeff_iQ0H);
__m128i out_08 = _mm_unpacklo_epi16(coeff_iQ8L, coeff_iQ8H);
__m128i out_12 = _mm_unpackhi_epi16(coeff_iQ8L, coeff_iQ8H);
// expand bias from 16b to 32b
__m128i bias_00 = _mm_unpacklo_epi16(bias0, zero);
__m128i bias_04 = _mm_unpackhi_epi16(bias0, zero);
__m128i bias_08 = _mm_unpacklo_epi16(bias8, zero);
__m128i bias_12 = _mm_unpackhi_epi16(bias8, zero);
// out = (coeff * iQ + B)
out_00 = _mm_add_epi32(out_00, bias_00);
out_04 = _mm_add_epi32(out_04, bias_04);
out_08 = _mm_add_epi32(out_08, bias_08);
out_12 = _mm_add_epi32(out_12, bias_12);
// out = (coeff * iQ + B) >> QFIX;
out_00 = _mm_srai_epi32(out_00, QFIX);
out_04 = _mm_srai_epi32(out_04, QFIX);
out_08 = _mm_srai_epi32(out_08, QFIX);
out_12 = _mm_srai_epi32(out_12, QFIX);
// pack result as 16b
out0 = _mm_packs_epi32(out_00, out_04);
out8 = _mm_packs_epi32(out_08, out_12);
}
// get sign back (if (sign[j]) out_n = -out_n)
out0 = _mm_xor_si128(out0, sign0);
out8 = _mm_xor_si128(out8, sign8);
out0 = _mm_sub_epi16(out0, sign0);
out8 = _mm_sub_epi16(out8, sign8);
// in = out * Q
in0 = _mm_mullo_epi16(out0, q0);
in8 = _mm_mullo_epi16(out8, q8);
// if (coeff <= mtx->zthresh_) {in=0; out=0;}
{
__m128i cmp0 = _mm_cmpgt_epi16(coeff0, zthresh0);
__m128i cmp8 = _mm_cmpgt_epi16(coeff8, zthresh8);
in0 = _mm_and_si128(in0, cmp0);
in8 = _mm_and_si128(in8, cmp8);
_mm_storeu_si128((__m128i*)&in[0], in0);
_mm_storeu_si128((__m128i*)&in[8], in8);
out0 = _mm_and_si128(out0, cmp0);
out8 = _mm_and_si128(out8, cmp8);
}
// zigzag the output before storing it.
//
// The zigzag pattern can almost be reproduced with a small sequence of
// shuffles. After it, we only need to swap the 7th (ending up in third
// position instead of twelfth) and 8th values.
{
__m128i outZ0, outZ8;
outZ0 = _mm_shufflehi_epi16(out0, _MM_SHUFFLE(2, 1, 3, 0));
outZ0 = _mm_shuffle_epi32 (outZ0, _MM_SHUFFLE(3, 1, 2, 0));
outZ0 = _mm_shufflehi_epi16(outZ0, _MM_SHUFFLE(3, 1, 0, 2));
outZ8 = _mm_shufflelo_epi16(out8, _MM_SHUFFLE(3, 0, 2, 1));
outZ8 = _mm_shuffle_epi32 (outZ8, _MM_SHUFFLE(3, 1, 2, 0));
outZ8 = _mm_shufflelo_epi16(outZ8, _MM_SHUFFLE(1, 3, 2, 0));
_mm_storeu_si128((__m128i*)&out[0], outZ0);
_mm_storeu_si128((__m128i*)&out[8], outZ8);
packed_out = _mm_packs_epi16(outZ0, outZ8);
}
{
const int16_t outZ_12 = out[12];
const int16_t outZ_3 = out[3];
out[3] = outZ_12;
out[12] = outZ_3;
}
// detect if all 'out' values are zeroes or not
{
int32_t tmp[4];
_mm_storeu_si128((__m128i*)tmp, packed_out);
if (n) {
tmp[0] &= ~0xff;
}
return (tmp[3] || tmp[2] || tmp[1] || tmp[0]);
}
}
static void vpx_filter_block1d16_h8_avx2(const uint8_t *src_ptr,
ptrdiff_t src_pixels_per_line,
uint8_t *output_ptr,
ptrdiff_t output_pitch,
uint32_t output_height,
const int16_t *filter) {
__m128i filtersReg;
__m256i addFilterReg64, filt1Reg, filt2Reg, filt3Reg, filt4Reg;
__m256i firstFilters, secondFilters, thirdFilters, forthFilters;
__m256i srcRegFilt32b1_1, srcRegFilt32b2_1, srcRegFilt32b2, srcRegFilt32b3;
__m256i srcReg32b1, srcReg32b2, filtersReg32;
unsigned int i;
ptrdiff_t src_stride, dst_stride;
// create a register with 0,64,0,64,0,64,0,64,0,64,0,64,0,64,0,64
addFilterReg64 = _mm256_set1_epi32((int)0x0400040u);
filtersReg = _mm_loadu_si128((const __m128i *)filter);
// converting the 16 bit (short) to 8 bit (byte) and have the same data
// in both lanes of 128 bit register.
filtersReg =_mm_packs_epi16(filtersReg, filtersReg);
// have the same data in both lanes of a 256 bit register
filtersReg32 = MM256_BROADCASTSI128_SI256(filtersReg);
// duplicate only the first 16 bits (first and second byte)
// across 256 bit register
firstFilters = _mm256_shuffle_epi8(filtersReg32,
_mm256_set1_epi16(0x100u));
// duplicate only the second 16 bits (third and forth byte)
// across 256 bit register
secondFilters = _mm256_shuffle_epi8(filtersReg32,
_mm256_set1_epi16(0x302u));
// duplicate only the third 16 bits (fifth and sixth byte)
// across 256 bit register
thirdFilters = _mm256_shuffle_epi8(filtersReg32,
_mm256_set1_epi16(0x504u));
// duplicate only the forth 16 bits (seventh and eighth byte)
// across 256 bit register
forthFilters = _mm256_shuffle_epi8(filtersReg32,
_mm256_set1_epi16(0x706u));
filt1Reg = _mm256_load_si256((__m256i const *)filt1_global_avx2);
filt2Reg = _mm256_load_si256((__m256i const *)filt2_global_avx2);
filt3Reg = _mm256_load_si256((__m256i const *)filt3_global_avx2);
filt4Reg = _mm256_load_si256((__m256i const *)filt4_global_avx2);
// multiple the size of the source and destination stride by two
src_stride = src_pixels_per_line << 1;
dst_stride = output_pitch << 1;
for (i = output_height; i > 1; i-=2) {
// load the 2 strides of source
srcReg32b1 = _mm256_castsi128_si256(
_mm_loadu_si128((const __m128i *)(src_ptr - 3)));
srcReg32b1 = _mm256_inserti128_si256(srcReg32b1,
_mm_loadu_si128((const __m128i *)
(src_ptr+src_pixels_per_line-3)), 1);
// filter the source buffer
srcRegFilt32b1_1= _mm256_shuffle_epi8(srcReg32b1, filt1Reg);
srcRegFilt32b2= _mm256_shuffle_epi8(srcReg32b1, filt4Reg);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt32b1_1 = _mm256_maddubs_epi16(srcRegFilt32b1_1, firstFilters);
srcRegFilt32b2 = _mm256_maddubs_epi16(srcRegFilt32b2, forthFilters);
// add and saturate the results together
srcRegFilt32b1_1 = _mm256_adds_epi16(srcRegFilt32b1_1, srcRegFilt32b2);
// filter the source buffer
srcRegFilt32b3= _mm256_shuffle_epi8(srcReg32b1, filt2Reg);
srcRegFilt32b2= _mm256_shuffle_epi8(srcReg32b1, filt3Reg);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt32b3 = _mm256_maddubs_epi16(srcRegFilt32b3, secondFilters);
srcRegFilt32b2 = _mm256_maddubs_epi16(srcRegFilt32b2, thirdFilters);
// add and saturate the results together
srcRegFilt32b1_1 = _mm256_adds_epi16(srcRegFilt32b1_1,
_mm256_min_epi16(srcRegFilt32b3, srcRegFilt32b2));
// reading 2 strides of the next 16 bytes
// (part of it was being read by earlier read)
srcReg32b2 = _mm256_castsi128_si256(
_mm_loadu_si128((const __m128i *)(src_ptr + 5)));
srcReg32b2 = _mm256_inserti128_si256(srcReg32b2,
_mm_loadu_si128((const __m128i *)
(src_ptr+src_pixels_per_line+5)), 1);
// add and saturate the results together
srcRegFilt32b1_1 = _mm256_adds_epi16(srcRegFilt32b1_1,
_mm256_max_epi16(srcRegFilt32b3, srcRegFilt32b2));
// filter the source buffer
srcRegFilt32b2_1 = _mm256_shuffle_epi8(srcReg32b2, filt1Reg);
srcRegFilt32b2 = _mm256_shuffle_epi8(srcReg32b2, filt4Reg);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt32b2_1 = _mm256_maddubs_epi16(srcRegFilt32b2_1, firstFilters);
srcRegFilt32b2 = _mm256_maddubs_epi16(srcRegFilt32b2, forthFilters);
// add and saturate the results together
srcRegFilt32b2_1 = _mm256_adds_epi16(srcRegFilt32b2_1, srcRegFilt32b2);
// filter the source buffer
srcRegFilt32b3= _mm256_shuffle_epi8(srcReg32b2, filt2Reg);
srcRegFilt32b2= _mm256_shuffle_epi8(srcReg32b2, filt3Reg);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt32b3 = _mm256_maddubs_epi16(srcRegFilt32b3, secondFilters);
srcRegFilt32b2 = _mm256_maddubs_epi16(srcRegFilt32b2, thirdFilters);
// add and saturate the results together
srcRegFilt32b2_1 = _mm256_adds_epi16(srcRegFilt32b2_1,
_mm256_min_epi16(srcRegFilt32b3, srcRegFilt32b2));
srcRegFilt32b2_1 = _mm256_adds_epi16(srcRegFilt32b2_1,
_mm256_max_epi16(srcRegFilt32b3, srcRegFilt32b2));
srcRegFilt32b1_1 = _mm256_adds_epi16(srcRegFilt32b1_1, addFilterReg64);
srcRegFilt32b2_1 = _mm256_adds_epi16(srcRegFilt32b2_1, addFilterReg64);
// shift by 7 bit each 16 bit
srcRegFilt32b1_1 = _mm256_srai_epi16(srcRegFilt32b1_1, 7);
srcRegFilt32b2_1 = _mm256_srai_epi16(srcRegFilt32b2_1, 7);
// shrink to 8 bit each 16 bits, the first lane contain the first
// convolve result and the second lane contain the second convolve
// result
srcRegFilt32b1_1 = _mm256_packus_epi16(srcRegFilt32b1_1,
srcRegFilt32b2_1);
src_ptr+=src_stride;
// save 16 bytes
_mm_store_si128((__m128i*)output_ptr,
_mm256_castsi256_si128(srcRegFilt32b1_1));
// save the next 16 bits
_mm_store_si128((__m128i*)(output_ptr+output_pitch),
_mm256_extractf128_si256(srcRegFilt32b1_1, 1));
output_ptr+=dst_stride;
}
// if the number of strides is odd.
// process only 16 bytes
if (i > 0) {
__m128i srcReg1, srcReg2, srcRegFilt1_1, srcRegFilt2_1;
__m128i srcRegFilt2, srcRegFilt3;
srcReg1 = _mm_loadu_si128((const __m128i *)(src_ptr - 3));
// filter the source buffer
srcRegFilt1_1 = _mm_shuffle_epi8(srcReg1,
_mm256_castsi256_si128(filt1Reg));
srcRegFilt2 = _mm_shuffle_epi8(srcReg1,
_mm256_castsi256_si128(filt4Reg));
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt1_1 = _mm_maddubs_epi16(srcRegFilt1_1,
_mm256_castsi256_si128(firstFilters));
srcRegFilt2 = _mm_maddubs_epi16(srcRegFilt2,
_mm256_castsi256_si128(forthFilters));
// add and saturate the results together
srcRegFilt1_1 = _mm_adds_epi16(srcRegFilt1_1, srcRegFilt2);
// filter the source buffer
srcRegFilt3= _mm_shuffle_epi8(srcReg1,
_mm256_castsi256_si128(filt2Reg));
srcRegFilt2= _mm_shuffle_epi8(srcReg1,
_mm256_castsi256_si128(filt3Reg));
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt3 = _mm_maddubs_epi16(srcRegFilt3,
_mm256_castsi256_si128(secondFilters));
srcRegFilt2 = _mm_maddubs_epi16(srcRegFilt2,
_mm256_castsi256_si128(thirdFilters));
// add and saturate the results together
srcRegFilt1_1 = _mm_adds_epi16(srcRegFilt1_1,
_mm_min_epi16(srcRegFilt3, srcRegFilt2));
// reading the next 16 bytes
// (part of it was being read by earlier read)
srcReg2 = _mm_loadu_si128((const __m128i *)(src_ptr + 5));
// add and saturate the results together
srcRegFilt1_1 = _mm_adds_epi16(srcRegFilt1_1,
_mm_max_epi16(srcRegFilt3, srcRegFilt2));
// filter the source buffer
srcRegFilt2_1 = _mm_shuffle_epi8(srcReg2,
_mm256_castsi256_si128(filt1Reg));
srcRegFilt2 = _mm_shuffle_epi8(srcReg2,
_mm256_castsi256_si128(filt4Reg));
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt2_1 = _mm_maddubs_epi16(srcRegFilt2_1,
_mm256_castsi256_si128(firstFilters));
srcRegFilt2 = _mm_maddubs_epi16(srcRegFilt2,
_mm256_castsi256_si128(forthFilters));
// add and saturate the results together
srcRegFilt2_1 = _mm_adds_epi16(srcRegFilt2_1, srcRegFilt2);
// filter the source buffer
srcRegFilt3 = _mm_shuffle_epi8(srcReg2,
_mm256_castsi256_si128(filt2Reg));
srcRegFilt2 = _mm_shuffle_epi8(srcReg2,
_mm256_castsi256_si128(filt3Reg));
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt3 = _mm_maddubs_epi16(srcRegFilt3,
_mm256_castsi256_si128(secondFilters));
srcRegFilt2 = _mm_maddubs_epi16(srcRegFilt2,
_mm256_castsi256_si128(thirdFilters));
// add and saturate the results together
srcRegFilt2_1 = _mm_adds_epi16(srcRegFilt2_1,
_mm_min_epi16(srcRegFilt3, srcRegFilt2));
srcRegFilt2_1 = _mm_adds_epi16(srcRegFilt2_1,
_mm_max_epi16(srcRegFilt3, srcRegFilt2));
srcRegFilt1_1 = _mm_adds_epi16(srcRegFilt1_1,
_mm256_castsi256_si128(addFilterReg64));
srcRegFilt2_1 = _mm_adds_epi16(srcRegFilt2_1,
_mm256_castsi256_si128(addFilterReg64));
// shift by 7 bit each 16 bit
srcRegFilt1_1 = _mm_srai_epi16(srcRegFilt1_1, 7);
srcRegFilt2_1 = _mm_srai_epi16(srcRegFilt2_1, 7);
// shrink to 8 bit each 16 bits, the first lane contain the first
// convolve result and the second lane contain the second convolve
// result
srcRegFilt1_1 = _mm_packus_epi16(srcRegFilt1_1, srcRegFilt2_1);
// save 16 bytes
_mm_store_si128((__m128i*)output_ptr, srcRegFilt1_1);
}
}
/*
============
idSIMD_SSE::CmpLT
dst[i] |= ( src0[i] < constant ) << bitNum;
============
*/
void VPCALL idSIMD_SSE2::CmpLT( byte *dst, const byte bitNum, const float *src0, const float constant, const int count ) {
int i, cnt, pre, post;
float *aligned;
__m128 xmm0, xmm1;
__m128i xmm0i;
int cnt_l;
char *src0_p;
char *constant_p;
char *dst_p;
int mask_l;
int dst_l;
/* if the float array is not aligned on a 4 byte boundary */
if ( ((int) src0) & 3 ) {
/* unaligned memory access */
pre = 0;
cnt = count >> 2;
post = count - (cnt<<2);
/*
__asm mov edx, cnt
__asm test edx, edx
__asm je doneCmp
*/
cnt_l = cnt;
if(cnt_l != 0) {
/*
__asm push ebx
__asm neg edx
__asm mov esi, src0
__asm prefetchnta [esi+64]
__asm movss xmm1, constant
__asm shufps xmm1, xmm1, R_SHUFFLEPS( 0, 0, 0, 0 )
__asm mov edi, dst
__asm mov cl, bitNum
*/
cnt_l = -cnt_l;
src0_p = (char *) src0;
_mm_prefetch(src0_p+64, _MM_HINT_NTA);
constant_p = (char *) &constant;
xmm1 = _mm_load_ss((float *)constant_p);
xmm1 = _mm_shuffle_ps(xmm1, xmm1, R_SHUFFLEPS( 0, 0, 0, 0 ));
dst_p = (char *)dst;
/*
__asm loopNA:
*/
do {
/*
__asm movups xmm0, [esi]
__asm prefetchnta [esi+128]
__asm cmpltps xmm0, xmm1
__asm movmskps eax, xmm0 \
__asm mov ah, al
__asm shr ah, 1
__asm mov bx, ax
__asm shl ebx, 14
__asm mov bx, ax
__asm and ebx, 0x01010101
__asm shl ebx, cl
__asm or ebx, dword ptr [edi]
__asm mov dword ptr [edi], ebx
__asm add esi, 16
__asm add edi, 4
__asm inc edx
__asm jl loopNA
__asm pop ebx
*/
xmm0 = _mm_loadu_ps((float *) src0_p);
_mm_prefetch(src0_p+128, _MM_HINT_NTA);
xmm0 = _mm_cmplt_ps(xmm0, xmm1);
// Simplify using SSE2
xmm0i = (__m128i) xmm0;
xmm0i = _mm_packs_epi32(xmm0i, xmm0i);
xmm0i = _mm_packs_epi16(xmm0i, xmm0i);
mask_l = _mm_cvtsi128_si32(xmm0i);
// End
mask_l = mask_l & 0x01010101;
mask_l = mask_l << bitNum;
dst_l = *((int *) dst_p);
mask_l = mask_l | dst_l;
*((int *) dst_p) = mask_l;
src0_p = src0_p + 16;
dst_p = dst_p + 4;
cnt_l = cnt_l + 1;
} while (cnt_l < 0);
}
}
static void vpx_filter_block1d16_v8_avx2(const uint8_t *src_ptr,
ptrdiff_t src_pitch,
uint8_t *output_ptr,
ptrdiff_t out_pitch,
uint32_t output_height,
const int16_t *filter) {
__m128i filtersReg;
__m256i addFilterReg64;
__m256i srcReg32b1, srcReg32b2, srcReg32b3, srcReg32b4, srcReg32b5;
__m256i srcReg32b6, srcReg32b7, srcReg32b8, srcReg32b9, srcReg32b10;
__m256i srcReg32b11, srcReg32b12, filtersReg32;
__m256i firstFilters, secondFilters, thirdFilters, forthFilters;
unsigned int i;
ptrdiff_t src_stride, dst_stride;
// create a register with 0,64,0,64,0,64,0,64,0,64,0,64,0,64,0,64
addFilterReg64 = _mm256_set1_epi32((int)0x0400040u);
filtersReg = _mm_loadu_si128((const __m128i *)filter);
// converting the 16 bit (short) to 8 bit (byte) and have the
// same data in both lanes of 128 bit register.
filtersReg =_mm_packs_epi16(filtersReg, filtersReg);
// have the same data in both lanes of a 256 bit register
filtersReg32 = MM256_BROADCASTSI128_SI256(filtersReg);
// duplicate only the first 16 bits (first and second byte)
// across 256 bit register
firstFilters = _mm256_shuffle_epi8(filtersReg32,
_mm256_set1_epi16(0x100u));
// duplicate only the second 16 bits (third and forth byte)
// across 256 bit register
secondFilters = _mm256_shuffle_epi8(filtersReg32,
_mm256_set1_epi16(0x302u));
// duplicate only the third 16 bits (fifth and sixth byte)
// across 256 bit register
thirdFilters = _mm256_shuffle_epi8(filtersReg32,
_mm256_set1_epi16(0x504u));
// duplicate only the forth 16 bits (seventh and eighth byte)
// across 256 bit register
forthFilters = _mm256_shuffle_epi8(filtersReg32,
_mm256_set1_epi16(0x706u));
// multiple the size of the source and destination stride by two
src_stride = src_pitch << 1;
dst_stride = out_pitch << 1;
// load 16 bytes 7 times in stride of src_pitch
srcReg32b1 = _mm256_castsi128_si256(
_mm_loadu_si128((const __m128i *)(src_ptr)));
srcReg32b2 = _mm256_castsi128_si256(
_mm_loadu_si128((const __m128i *)(src_ptr + src_pitch)));
srcReg32b3 = _mm256_castsi128_si256(
_mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 2)));
srcReg32b4 = _mm256_castsi128_si256(
_mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 3)));
srcReg32b5 = _mm256_castsi128_si256(
_mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 4)));
srcReg32b6 = _mm256_castsi128_si256(
_mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 5)));
srcReg32b7 = _mm256_castsi128_si256(
_mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 6)));
// have each consecutive loads on the same 256 register
srcReg32b1 = _mm256_inserti128_si256(srcReg32b1,
_mm256_castsi256_si128(srcReg32b2), 1);
srcReg32b2 = _mm256_inserti128_si256(srcReg32b2,
_mm256_castsi256_si128(srcReg32b3), 1);
srcReg32b3 = _mm256_inserti128_si256(srcReg32b3,
_mm256_castsi256_si128(srcReg32b4), 1);
srcReg32b4 = _mm256_inserti128_si256(srcReg32b4,
_mm256_castsi256_si128(srcReg32b5), 1);
srcReg32b5 = _mm256_inserti128_si256(srcReg32b5,
_mm256_castsi256_si128(srcReg32b6), 1);
srcReg32b6 = _mm256_inserti128_si256(srcReg32b6,
_mm256_castsi256_si128(srcReg32b7), 1);
// merge every two consecutive registers except the last one
srcReg32b10 = _mm256_unpacklo_epi8(srcReg32b1, srcReg32b2);
srcReg32b1 = _mm256_unpackhi_epi8(srcReg32b1, srcReg32b2);
// save
srcReg32b11 = _mm256_unpacklo_epi8(srcReg32b3, srcReg32b4);
// save
srcReg32b3 = _mm256_unpackhi_epi8(srcReg32b3, srcReg32b4);
// save
srcReg32b2 = _mm256_unpacklo_epi8(srcReg32b5, srcReg32b6);
// save
srcReg32b5 = _mm256_unpackhi_epi8(srcReg32b5, srcReg32b6);
for (i = output_height; i > 1; i-=2) {
// load the last 2 loads of 16 bytes and have every two
// consecutive loads in the same 256 bit register
srcReg32b8 = _mm256_castsi128_si256(
_mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 7)));
srcReg32b7 = _mm256_inserti128_si256(srcReg32b7,
_mm256_castsi256_si128(srcReg32b8), 1);
srcReg32b9 = _mm256_castsi128_si256(
_mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 8)));
srcReg32b8 = _mm256_inserti128_si256(srcReg32b8,
_mm256_castsi256_si128(srcReg32b9), 1);
// merge every two consecutive registers
// save
srcReg32b4 = _mm256_unpacklo_epi8(srcReg32b7, srcReg32b8);
srcReg32b7 = _mm256_unpackhi_epi8(srcReg32b7, srcReg32b8);
// multiply 2 adjacent elements with the filter and add the result
srcReg32b10 = _mm256_maddubs_epi16(srcReg32b10, firstFilters);
srcReg32b6 = _mm256_maddubs_epi16(srcReg32b4, forthFilters);
// add and saturate the results together
srcReg32b10 = _mm256_adds_epi16(srcReg32b10, srcReg32b6);
// multiply 2 adjacent elements with the filter and add the result
srcReg32b8 = _mm256_maddubs_epi16(srcReg32b11, secondFilters);
srcReg32b12 = _mm256_maddubs_epi16(srcReg32b2, thirdFilters);
// add and saturate the results together
srcReg32b10 = _mm256_adds_epi16(srcReg32b10,
_mm256_min_epi16(srcReg32b8, srcReg32b12));
srcReg32b10 = _mm256_adds_epi16(srcReg32b10,
_mm256_max_epi16(srcReg32b8, srcReg32b12));
// multiply 2 adjacent elements with the filter and add the result
srcReg32b1 = _mm256_maddubs_epi16(srcReg32b1, firstFilters);
srcReg32b6 = _mm256_maddubs_epi16(srcReg32b7, forthFilters);
srcReg32b1 = _mm256_adds_epi16(srcReg32b1, srcReg32b6);
// multiply 2 adjacent elements with the filter and add the result
srcReg32b8 = _mm256_maddubs_epi16(srcReg32b3, secondFilters);
srcReg32b12 = _mm256_maddubs_epi16(srcReg32b5, thirdFilters);
// add and saturate the results together
srcReg32b1 = _mm256_adds_epi16(srcReg32b1,
_mm256_min_epi16(srcReg32b8, srcReg32b12));
srcReg32b1 = _mm256_adds_epi16(srcReg32b1,
_mm256_max_epi16(srcReg32b8, srcReg32b12));
srcReg32b10 = _mm256_adds_epi16(srcReg32b10, addFilterReg64);
srcReg32b1 = _mm256_adds_epi16(srcReg32b1, addFilterReg64);
// shift by 7 bit each 16 bit
srcReg32b10 = _mm256_srai_epi16(srcReg32b10, 7);
srcReg32b1 = _mm256_srai_epi16(srcReg32b1, 7);
// shrink to 8 bit each 16 bits, the first lane contain the first
// convolve result and the second lane contain the second convolve
// result
srcReg32b1 = _mm256_packus_epi16(srcReg32b10, srcReg32b1);
src_ptr+=src_stride;
// save 16 bytes
_mm_store_si128((__m128i*)output_ptr,
_mm256_castsi256_si128(srcReg32b1));
// save the next 16 bits
_mm_store_si128((__m128i*)(output_ptr+out_pitch),
_mm256_extractf128_si256(srcReg32b1, 1));
output_ptr+=dst_stride;
// save part of the registers for next strides
srcReg32b10 = srcReg32b11;
srcReg32b1 = srcReg32b3;
srcReg32b11 = srcReg32b2;
srcReg32b3 = srcReg32b5;
srcReg32b2 = srcReg32b4;
srcReg32b5 = srcReg32b7;
srcReg32b7 = srcReg32b9;
}
if (i > 0) {
__m128i srcRegFilt1, srcRegFilt3, srcRegFilt4, srcRegFilt5;
__m128i srcRegFilt6, srcRegFilt7, srcRegFilt8;
// load the last 16 bytes
srcRegFilt8 = _mm_loadu_si128((const __m128i *)(src_ptr + src_pitch * 7));
// merge the last 2 results together
srcRegFilt4 = _mm_unpacklo_epi8(
_mm256_castsi256_si128(srcReg32b7), srcRegFilt8);
srcRegFilt7 = _mm_unpackhi_epi8(
_mm256_castsi256_si128(srcReg32b7), srcRegFilt8);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt1 = _mm_maddubs_epi16(_mm256_castsi256_si128(srcReg32b10),
_mm256_castsi256_si128(firstFilters));
srcRegFilt4 = _mm_maddubs_epi16(srcRegFilt4,
_mm256_castsi256_si128(forthFilters));
srcRegFilt3 = _mm_maddubs_epi16(_mm256_castsi256_si128(srcReg32b1),
_mm256_castsi256_si128(firstFilters));
srcRegFilt7 = _mm_maddubs_epi16(srcRegFilt7,
_mm256_castsi256_si128(forthFilters));
// add and saturate the results together
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1, srcRegFilt4);
srcRegFilt3 = _mm_adds_epi16(srcRegFilt3, srcRegFilt7);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt4 = _mm_maddubs_epi16(_mm256_castsi256_si128(srcReg32b11),
_mm256_castsi256_si128(secondFilters));
srcRegFilt5 = _mm_maddubs_epi16(_mm256_castsi256_si128(srcReg32b3),
_mm256_castsi256_si128(secondFilters));
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt6 = _mm_maddubs_epi16(_mm256_castsi256_si128(srcReg32b2),
_mm256_castsi256_si128(thirdFilters));
srcRegFilt7 = _mm_maddubs_epi16(_mm256_castsi256_si128(srcReg32b5),
_mm256_castsi256_si128(thirdFilters));
// add and saturate the results together
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1,
_mm_min_epi16(srcRegFilt4, srcRegFilt6));
srcRegFilt3 = _mm_adds_epi16(srcRegFilt3,
_mm_min_epi16(srcRegFilt5, srcRegFilt7));
// add and saturate the results together
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1,
_mm_max_epi16(srcRegFilt4, srcRegFilt6));
srcRegFilt3 = _mm_adds_epi16(srcRegFilt3,
_mm_max_epi16(srcRegFilt5, srcRegFilt7));
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1,
_mm256_castsi256_si128(addFilterReg64));
srcRegFilt3 = _mm_adds_epi16(srcRegFilt3,
_mm256_castsi256_si128(addFilterReg64));
// shift by 7 bit each 16 bit
srcRegFilt1 = _mm_srai_epi16(srcRegFilt1, 7);
srcRegFilt3 = _mm_srai_epi16(srcRegFilt3, 7);
// shrink to 8 bit each 16 bits, the first lane contain the first
// convolve result and the second lane contain the second convolve
// result
srcRegFilt1 = _mm_packus_epi16(srcRegFilt1, srcRegFilt3);
// save 16 bytes
_mm_store_si128((__m128i*)output_ptr, srcRegFilt1);
}
}
void
lp_rast_triangle_3_16(struct lp_rasterizer_task *task,
const union lp_rast_cmd_arg arg)
{
const struct lp_rast_triangle *tri = arg.triangle.tri;
const struct lp_rast_plane *plane = GET_PLANES(tri);
int x = (arg.triangle.plane_mask & 0xff) + task->x;
int y = (arg.triangle.plane_mask >> 8) + task->y;
unsigned i, j;
struct { unsigned mask:16; unsigned i:8; unsigned j:8; } out[16];
unsigned nr = 0;
__m128i p0 = _mm_load_si128((__m128i *)&plane[0]); /* c, dcdx, dcdy, eo */
__m128i p1 = _mm_load_si128((__m128i *)&plane[1]); /* c, dcdx, dcdy, eo */
__m128i p2 = _mm_load_si128((__m128i *)&plane[2]); /* c, dcdx, dcdy, eo */
__m128i zero = _mm_setzero_si128();
__m128i c;
__m128i dcdx;
__m128i dcdy;
__m128i rej4;
__m128i dcdx2;
__m128i dcdx3;
__m128i span_0; /* 0,dcdx,2dcdx,3dcdx for plane 0 */
__m128i span_1; /* 0,dcdx,2dcdx,3dcdx for plane 1 */
__m128i span_2; /* 0,dcdx,2dcdx,3dcdx for plane 2 */
__m128i unused;
transpose4_epi32(&p0, &p1, &p2, &zero,
&c, &dcdx, &dcdy, &rej4);
/* Adjust dcdx;
*/
dcdx = _mm_sub_epi32(zero, dcdx);
c = _mm_add_epi32(c, mm_mullo_epi32(dcdx, _mm_set1_epi32(x)));
c = _mm_add_epi32(c, mm_mullo_epi32(dcdy, _mm_set1_epi32(y)));
rej4 = _mm_slli_epi32(rej4, 2);
/* Adjust so we can just check the sign bit (< 0 comparison), instead of having to do a less efficient <= 0 comparison */
c = _mm_sub_epi32(c, _mm_set1_epi32(1));
rej4 = _mm_add_epi32(rej4, _mm_set1_epi32(1));
dcdx2 = _mm_add_epi32(dcdx, dcdx);
dcdx3 = _mm_add_epi32(dcdx2, dcdx);
transpose4_epi32(&zero, &dcdx, &dcdx2, &dcdx3,
&span_0, &span_1, &span_2, &unused);
for (i = 0; i < 4; i++) {
__m128i cx = c;
for (j = 0; j < 4; j++) {
__m128i c4rej = _mm_add_epi32(cx, rej4);
__m128i rej_masks = _mm_srai_epi32(c4rej, 31);
/* if (is_zero(rej_masks)) */
if (_mm_movemask_epi8(rej_masks) == 0) {
__m128i c0_0 = _mm_add_epi32(SCALAR_EPI32(cx, 0), span_0);
__m128i c1_0 = _mm_add_epi32(SCALAR_EPI32(cx, 1), span_1);
__m128i c2_0 = _mm_add_epi32(SCALAR_EPI32(cx, 2), span_2);
__m128i c_0 = _mm_or_si128(_mm_or_si128(c0_0, c1_0), c2_0);
__m128i c0_1 = _mm_add_epi32(c0_0, SCALAR_EPI32(dcdy, 0));
__m128i c1_1 = _mm_add_epi32(c1_0, SCALAR_EPI32(dcdy, 1));
__m128i c2_1 = _mm_add_epi32(c2_0, SCALAR_EPI32(dcdy, 2));
__m128i c_1 = _mm_or_si128(_mm_or_si128(c0_1, c1_1), c2_1);
__m128i c_01 = _mm_packs_epi32(c_0, c_1);
__m128i c0_2 = _mm_add_epi32(c0_1, SCALAR_EPI32(dcdy, 0));
__m128i c1_2 = _mm_add_epi32(c1_1, SCALAR_EPI32(dcdy, 1));
__m128i c2_2 = _mm_add_epi32(c2_1, SCALAR_EPI32(dcdy, 2));
__m128i c_2 = _mm_or_si128(_mm_or_si128(c0_2, c1_2), c2_2);
__m128i c0_3 = _mm_add_epi32(c0_2, SCALAR_EPI32(dcdy, 0));
__m128i c1_3 = _mm_add_epi32(c1_2, SCALAR_EPI32(dcdy, 1));
__m128i c2_3 = _mm_add_epi32(c2_2, SCALAR_EPI32(dcdy, 2));
__m128i c_3 = _mm_or_si128(_mm_or_si128(c0_3, c1_3), c2_3);
__m128i c_23 = _mm_packs_epi32(c_2, c_3);
__m128i c_0123 = _mm_packs_epi16(c_01, c_23);
unsigned mask = _mm_movemask_epi8(c_0123);
out[nr].i = i;
out[nr].j = j;
out[nr].mask = mask;
if (mask != 0xffff)
nr++;
}
cx = _mm_add_epi32(cx, _mm_slli_epi32(dcdx, 2));
}
c = _mm_add_epi32(c, _mm_slli_epi32(dcdy, 2));
}
for (i = 0; i < nr; i++)
lp_rast_shade_quads_mask(task,
&tri->inputs,
x + 4 * out[i].j,
y + 4 * out[i].i,
0xffff & ~out[i].mask);
}
void
lp_rast_triangle_3_4(struct lp_rasterizer_task *task,
const union lp_rast_cmd_arg arg)
{
const struct lp_rast_triangle *tri = arg.triangle.tri;
const struct lp_rast_plane *plane = GET_PLANES(tri);
unsigned x = (arg.triangle.plane_mask & 0xff) + task->x;
unsigned y = (arg.triangle.plane_mask >> 8) + task->y;
__m128i p0 = _mm_load_si128((__m128i *)&plane[0]); /* c, dcdx, dcdy, eo */
__m128i p1 = _mm_load_si128((__m128i *)&plane[1]); /* c, dcdx, dcdy, eo */
__m128i p2 = _mm_load_si128((__m128i *)&plane[2]); /* c, dcdx, dcdy, eo */
__m128i zero = _mm_setzero_si128();
__m128i c;
__m128i dcdx;
__m128i dcdy;
__m128i dcdx2;
__m128i dcdx3;
__m128i span_0; /* 0,dcdx,2dcdx,3dcdx for plane 0 */
__m128i span_1; /* 0,dcdx,2dcdx,3dcdx for plane 1 */
__m128i span_2; /* 0,dcdx,2dcdx,3dcdx for plane 2 */
__m128i unused;
transpose4_epi32(&p0, &p1, &p2, &zero,
&c, &dcdx, &dcdy, &unused);
/* Adjust dcdx;
*/
dcdx = _mm_sub_epi32(zero, dcdx);
c = _mm_add_epi32(c, mm_mullo_epi32(dcdx, _mm_set1_epi32(x)));
c = _mm_add_epi32(c, mm_mullo_epi32(dcdy, _mm_set1_epi32(y)));
/* Adjust so we can just check the sign bit (< 0 comparison), instead of having to do a less efficient <= 0 comparison */
c = _mm_sub_epi32(c, _mm_set1_epi32(1));
dcdx2 = _mm_add_epi32(dcdx, dcdx);
dcdx3 = _mm_add_epi32(dcdx2, dcdx);
transpose4_epi32(&zero, &dcdx, &dcdx2, &dcdx3,
&span_0, &span_1, &span_2, &unused);
{
__m128i c0_0 = _mm_add_epi32(SCALAR_EPI32(c, 0), span_0);
__m128i c1_0 = _mm_add_epi32(SCALAR_EPI32(c, 1), span_1);
__m128i c2_0 = _mm_add_epi32(SCALAR_EPI32(c, 2), span_2);
__m128i c_0 = _mm_or_si128(_mm_or_si128(c0_0, c1_0), c2_0);
__m128i c0_1 = _mm_add_epi32(c0_0, SCALAR_EPI32(dcdy, 0));
__m128i c1_1 = _mm_add_epi32(c1_0, SCALAR_EPI32(dcdy, 1));
__m128i c2_1 = _mm_add_epi32(c2_0, SCALAR_EPI32(dcdy, 2));
__m128i c_1 = _mm_or_si128(_mm_or_si128(c0_1, c1_1), c2_1);
__m128i c_01 = _mm_packs_epi32(c_0, c_1);
__m128i c0_2 = _mm_add_epi32(c0_1, SCALAR_EPI32(dcdy, 0));
__m128i c1_2 = _mm_add_epi32(c1_1, SCALAR_EPI32(dcdy, 1));
__m128i c2_2 = _mm_add_epi32(c2_1, SCALAR_EPI32(dcdy, 2));
__m128i c_2 = _mm_or_si128(_mm_or_si128(c0_2, c1_2), c2_2);
__m128i c0_3 = _mm_add_epi32(c0_2, SCALAR_EPI32(dcdy, 0));
__m128i c1_3 = _mm_add_epi32(c1_2, SCALAR_EPI32(dcdy, 1));
__m128i c2_3 = _mm_add_epi32(c2_2, SCALAR_EPI32(dcdy, 2));
__m128i c_3 = _mm_or_si128(_mm_or_si128(c0_3, c1_3), c2_3);
__m128i c_23 = _mm_packs_epi32(c_2, c_3);
__m128i c_0123 = _mm_packs_epi16(c_01, c_23);
unsigned mask = _mm_movemask_epi8(c_0123);
if (mask != 0xffff)
lp_rast_shade_quads_mask(task,
&tri->inputs,
x,
y,
0xffff & ~mask);
}
}
void vp9_filter_block1d16_h8_intrin_ssse3(unsigned char *src_ptr,
unsigned int src_pixels_per_line,
unsigned char *output_ptr,
unsigned int output_pitch,
unsigned int output_height,
int16_t *filter) {
__m128i addFilterReg64, filtersReg, srcReg1, srcReg2;
__m128i filt1Reg, filt2Reg, filt3Reg, filt4Reg;
__m128i firstFilters, secondFilters, thirdFilters, forthFilters;
__m128i srcRegFilt1_1, srcRegFilt2_1, srcRegFilt2, srcRegFilt3;
unsigned int i;
// create a register with 0,64,0,64,0,64,0,64,0,64,0,64,0,64,0,64
addFilterReg64 = _mm_set1_epi32((int)0x0400040u);
filtersReg = _mm_loadu_si128((__m128i *)filter);
// converting the 16 bit (short) to 8 bit (byte) and have the same data
// in both lanes of 128 bit register.
filtersReg =_mm_packs_epi16(filtersReg, filtersReg);
// duplicate only the first 16 bits (first and second byte)
// across 128 bit register
firstFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi16(0x100u));
// duplicate only the second 16 bits (third and forth byte)
// across 128 bit register
secondFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi16(0x302u));
// duplicate only the third 16 bits (fifth and sixth byte)
// across 128 bit register
thirdFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi16(0x504u));
// duplicate only the forth 16 bits (seventh and eighth byte)
// across 128 bit register
forthFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi16(0x706u));
filt1Reg = _mm_load_si128((__m128i const *)filt1_global);
filt2Reg = _mm_load_si128((__m128i const *)filt2_global);
filt3Reg = _mm_load_si128((__m128i const *)filt3_global);
filt4Reg = _mm_load_si128((__m128i const *)filt4_global);
for (i = 0; i < output_height; i++) {
srcReg1 = _mm_loadu_si128((__m128i *)(src_ptr-3));
// filter the source buffer
srcRegFilt1_1= _mm_shuffle_epi8(srcReg1, filt1Reg);
srcRegFilt2= _mm_shuffle_epi8(srcReg1, filt4Reg);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt1_1 = _mm_maddubs_epi16(srcRegFilt1_1, firstFilters);
srcRegFilt2 = _mm_maddubs_epi16(srcRegFilt2, forthFilters);
// add and saturate the results together
srcRegFilt1_1 = _mm_adds_epi16(srcRegFilt1_1, srcRegFilt2);
// filter the source buffer
srcRegFilt3= _mm_shuffle_epi8(srcReg1, filt2Reg);
srcRegFilt2= _mm_shuffle_epi8(srcReg1, filt3Reg);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt3 = _mm_maddubs_epi16(srcRegFilt3, secondFilters);
srcRegFilt2 = _mm_maddubs_epi16(srcRegFilt2, thirdFilters);
// add and saturate the results together
srcRegFilt1_1 = _mm_adds_epi16(srcRegFilt1_1,
_mm_min_epi16(srcRegFilt3, srcRegFilt2));
// reading the next 16 bytes.
// (part of it was being read by earlier read)
srcReg2 = _mm_loadu_si128((__m128i *)(src_ptr+5));
// add and saturate the results together
srcRegFilt1_1 = _mm_adds_epi16(srcRegFilt1_1,
_mm_max_epi16(srcRegFilt3, srcRegFilt2));
// filter the source buffer
srcRegFilt2_1= _mm_shuffle_epi8(srcReg2, filt1Reg);
srcRegFilt2= _mm_shuffle_epi8(srcReg2, filt4Reg);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt2_1 = _mm_maddubs_epi16(srcRegFilt2_1, firstFilters);
srcRegFilt2 = _mm_maddubs_epi16(srcRegFilt2, forthFilters);
// add and saturate the results together
srcRegFilt2_1 = _mm_adds_epi16(srcRegFilt2_1, srcRegFilt2);
// filter the source buffer
srcRegFilt3= _mm_shuffle_epi8(srcReg2, filt2Reg);
srcRegFilt2= _mm_shuffle_epi8(srcReg2, filt3Reg);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt3 = _mm_maddubs_epi16(srcRegFilt3, secondFilters);
srcRegFilt2 = _mm_maddubs_epi16(srcRegFilt2, thirdFilters);
// add and saturate the results together
srcRegFilt2_1 = _mm_adds_epi16(srcRegFilt2_1,
_mm_min_epi16(srcRegFilt3, srcRegFilt2));
srcRegFilt2_1 = _mm_adds_epi16(srcRegFilt2_1,
_mm_max_epi16(srcRegFilt3, srcRegFilt2));
srcRegFilt1_1 = _mm_adds_epi16(srcRegFilt1_1, addFilterReg64);
srcRegFilt2_1 = _mm_adds_epi16(srcRegFilt2_1, addFilterReg64);
// shift by 7 bit each 16 bit
srcRegFilt1_1 = _mm_srai_epi16(srcRegFilt1_1, 7);
srcRegFilt2_1 = _mm_srai_epi16(srcRegFilt2_1, 7);
// shrink to 8 bit each 16 bits, the first lane contain the first
// convolve result and the second lane contain the second convolve
// result
srcRegFilt1_1 = _mm_packus_epi16(srcRegFilt1_1, srcRegFilt2_1);
src_ptr+=src_pixels_per_line;
// save 16 bytes
_mm_store_si128((__m128i*)output_ptr, srcRegFilt1_1);
output_ptr+=output_pitch;
}
}
void aom_filter_block1d8_h8_intrin_ssse3(
const uint8_t *src_ptr, ptrdiff_t src_pixels_per_line, uint8_t *output_ptr,
ptrdiff_t output_pitch, uint32_t output_height, const int16_t *filter) {
__m128i firstFilters, secondFilters, thirdFilters, forthFilters, srcReg;
__m128i filt1Reg, filt2Reg, filt3Reg, filt4Reg;
__m128i srcRegFilt1, srcRegFilt2, srcRegFilt3, srcRegFilt4;
__m128i addFilterReg64, filtersReg, minReg;
unsigned int i;
// create a register with 0,64,0,64,0,64,0,64,0,64,0,64,0,64,0,64
addFilterReg64 = _mm_set1_epi32((int)0x0400040u);
filtersReg = _mm_loadu_si128((const __m128i *)filter);
// converting the 16 bit (short) to 8 bit (byte) and have the same data
// in both lanes of 128 bit register.
filtersReg = _mm_packs_epi16(filtersReg, filtersReg);
// duplicate only the first 16 bits (first and second byte)
// across 128 bit register
firstFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi16(0x100u));
// duplicate only the second 16 bits (third and forth byte)
// across 128 bit register
secondFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi16(0x302u));
// duplicate only the third 16 bits (fifth and sixth byte)
// across 128 bit register
thirdFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi16(0x504u));
// duplicate only the forth 16 bits (seventh and eighth byte)
// across 128 bit register
forthFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi16(0x706u));
filt1Reg = _mm_load_si128((__m128i const *)filt1_global);
filt2Reg = _mm_load_si128((__m128i const *)filt2_global);
filt3Reg = _mm_load_si128((__m128i const *)filt3_global);
filt4Reg = _mm_load_si128((__m128i const *)filt4_global);
for (i = 0; i < output_height; i++) {
srcReg = _mm_loadu_si128((const __m128i *)(src_ptr - 3));
// filter the source buffer
srcRegFilt1 = _mm_shuffle_epi8(srcReg, filt1Reg);
srcRegFilt2 = _mm_shuffle_epi8(srcReg, filt2Reg);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt1 = _mm_maddubs_epi16(srcRegFilt1, firstFilters);
srcRegFilt2 = _mm_maddubs_epi16(srcRegFilt2, secondFilters);
// filter the source buffer
srcRegFilt3 = _mm_shuffle_epi8(srcReg, filt3Reg);
srcRegFilt4 = _mm_shuffle_epi8(srcReg, filt4Reg);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt3 = _mm_maddubs_epi16(srcRegFilt3, thirdFilters);
srcRegFilt4 = _mm_maddubs_epi16(srcRegFilt4, forthFilters);
// add and saturate all the results together
minReg = _mm_min_epi16(srcRegFilt2, srcRegFilt3);
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1, srcRegFilt4);
srcRegFilt2 = _mm_max_epi16(srcRegFilt2, srcRegFilt3);
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1, minReg);
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1, srcRegFilt2);
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1, addFilterReg64);
// shift by 7 bit each 16 bits
srcRegFilt1 = _mm_srai_epi16(srcRegFilt1, 7);
// shrink to 8 bit each 16 bits
srcRegFilt1 = _mm_packus_epi16(srcRegFilt1, srcRegFilt1);
src_ptr += src_pixels_per_line;
// save only 8 bytes
_mm_storel_epi64((__m128i *)&output_ptr[0], srcRegFilt1);
output_ptr += output_pitch;
}
}
void aom_filter_block1d8_v8_intrin_ssse3(
const uint8_t *src_ptr, ptrdiff_t src_pitch, uint8_t *output_ptr,
ptrdiff_t out_pitch, uint32_t output_height, const int16_t *filter) {
__m128i addFilterReg64, filtersReg, minReg;
__m128i firstFilters, secondFilters, thirdFilters, forthFilters;
__m128i srcRegFilt1, srcRegFilt2, srcRegFilt3, srcRegFilt5;
__m128i srcReg1, srcReg2, srcReg3, srcReg4, srcReg5, srcReg6, srcReg7;
__m128i srcReg8;
unsigned int i;
// create a register with 0,64,0,64,0,64,0,64,0,64,0,64,0,64,0,64
addFilterReg64 = _mm_set1_epi32((int)0x0400040u);
filtersReg = _mm_loadu_si128((const __m128i *)filter);
// converting the 16 bit (short) to 8 bit (byte) and have the same data
// in both lanes of 128 bit register.
filtersReg = _mm_packs_epi16(filtersReg, filtersReg);
// duplicate only the first 16 bits in the filter
firstFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi16(0x100u));
// duplicate only the second 16 bits in the filter
secondFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi16(0x302u));
// duplicate only the third 16 bits in the filter
thirdFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi16(0x504u));
// duplicate only the forth 16 bits in the filter
forthFilters = _mm_shuffle_epi8(filtersReg, _mm_set1_epi16(0x706u));
// load the first 7 rows of 8 bytes
srcReg1 = _mm_loadl_epi64((const __m128i *)src_ptr);
srcReg2 = _mm_loadl_epi64((const __m128i *)(src_ptr + src_pitch));
srcReg3 = _mm_loadl_epi64((const __m128i *)(src_ptr + src_pitch * 2));
srcReg4 = _mm_loadl_epi64((const __m128i *)(src_ptr + src_pitch * 3));
srcReg5 = _mm_loadl_epi64((const __m128i *)(src_ptr + src_pitch * 4));
srcReg6 = _mm_loadl_epi64((const __m128i *)(src_ptr + src_pitch * 5));
srcReg7 = _mm_loadl_epi64((const __m128i *)(src_ptr + src_pitch * 6));
for (i = 0; i < output_height; i++) {
// load the last 8 bytes
srcReg8 = _mm_loadl_epi64((const __m128i *)(src_ptr + src_pitch * 7));
// merge the result together
srcRegFilt1 = _mm_unpacklo_epi8(srcReg1, srcReg2);
srcRegFilt3 = _mm_unpacklo_epi8(srcReg3, srcReg4);
// merge the result together
srcRegFilt2 = _mm_unpacklo_epi8(srcReg5, srcReg6);
srcRegFilt5 = _mm_unpacklo_epi8(srcReg7, srcReg8);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt1 = _mm_maddubs_epi16(srcRegFilt1, firstFilters);
srcRegFilt3 = _mm_maddubs_epi16(srcRegFilt3, secondFilters);
srcRegFilt2 = _mm_maddubs_epi16(srcRegFilt2, thirdFilters);
srcRegFilt5 = _mm_maddubs_epi16(srcRegFilt5, forthFilters);
// add and saturate the results together
minReg = _mm_min_epi16(srcRegFilt2, srcRegFilt3);
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1, srcRegFilt5);
srcRegFilt2 = _mm_max_epi16(srcRegFilt2, srcRegFilt3);
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1, minReg);
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1, srcRegFilt2);
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1, addFilterReg64);
// shift by 7 bit each 16 bit
srcRegFilt1 = _mm_srai_epi16(srcRegFilt1, 7);
// shrink to 8 bit each 16 bits
srcRegFilt1 = _mm_packus_epi16(srcRegFilt1, srcRegFilt1);
src_ptr += src_pitch;
// shift down a row
srcReg1 = srcReg2;
srcReg2 = srcReg3;
srcReg3 = srcReg4;
srcReg4 = srcReg5;
srcReg5 = srcReg6;
srcReg6 = srcReg7;
srcReg7 = srcReg8;
// save only 8 bytes convolve result
_mm_storel_epi64((__m128i *)&output_ptr[0], srcRegFilt1);
output_ptr += out_pitch;
}
}
void aom_filter_block1d4_h8_intrin_ssse3(
const uint8_t *src_ptr, ptrdiff_t src_pixels_per_line, uint8_t *output_ptr,
ptrdiff_t output_pitch, uint32_t output_height, const int16_t *filter) {
__m128i firstFilters, secondFilters, shuffle1, shuffle2;
__m128i srcRegFilt1, srcRegFilt2, srcRegFilt3, srcRegFilt4;
__m128i addFilterReg64, filtersReg, srcReg, minReg;
unsigned int i;
// create a register with 0,64,0,64,0,64,0,64,0,64,0,64,0,64,0,64
addFilterReg64 = _mm_set1_epi32((int)0x0400040u);
filtersReg = _mm_loadu_si128((const __m128i *)filter);
// converting the 16 bit (short) to 8 bit (byte) and have the same data
// in both lanes of 128 bit register.
filtersReg = _mm_packs_epi16(filtersReg, filtersReg);
// duplicate only the first 16 bits in the filter into the first lane
firstFilters = _mm_shufflelo_epi16(filtersReg, 0);
// duplicate only the third 16 bit in the filter into the first lane
secondFilters = _mm_shufflelo_epi16(filtersReg, 0xAAu);
// duplicate only the seconds 16 bits in the filter into the second lane
// firstFilters: k0 k1 k0 k1 k0 k1 k0 k1 k2 k3 k2 k3 k2 k3 k2 k3
firstFilters = _mm_shufflehi_epi16(firstFilters, 0x55u);
// duplicate only the forth 16 bits in the filter into the second lane
// secondFilters: k4 k5 k4 k5 k4 k5 k4 k5 k6 k7 k6 k7 k6 k7 k6 k7
secondFilters = _mm_shufflehi_epi16(secondFilters, 0xFFu);
// loading the local filters
shuffle1 = _mm_load_si128((__m128i const *)filt1_4_h8);
shuffle2 = _mm_load_si128((__m128i const *)filt2_4_h8);
for (i = 0; i < output_height; i++) {
srcReg = _mm_loadu_si128((const __m128i *)(src_ptr - 3));
// filter the source buffer
srcRegFilt1 = _mm_shuffle_epi8(srcReg, shuffle1);
srcRegFilt2 = _mm_shuffle_epi8(srcReg, shuffle2);
// multiply 2 adjacent elements with the filter and add the result
srcRegFilt1 = _mm_maddubs_epi16(srcRegFilt1, firstFilters);
srcRegFilt2 = _mm_maddubs_epi16(srcRegFilt2, secondFilters);
// extract the higher half of the lane
srcRegFilt3 = _mm_srli_si128(srcRegFilt1, 8);
srcRegFilt4 = _mm_srli_si128(srcRegFilt2, 8);
minReg = _mm_min_epi16(srcRegFilt3, srcRegFilt2);
// add and saturate all the results together
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1, srcRegFilt4);
srcRegFilt3 = _mm_max_epi16(srcRegFilt3, srcRegFilt2);
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1, minReg);
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1, srcRegFilt3);
srcRegFilt1 = _mm_adds_epi16(srcRegFilt1, addFilterReg64);
// shift by 7 bit each 16 bits
srcRegFilt1 = _mm_srai_epi16(srcRegFilt1, 7);
// shrink to 8 bit each 16 bits
srcRegFilt1 = _mm_packus_epi16(srcRegFilt1, srcRegFilt1);
src_ptr += src_pixels_per_line;
// save only 4 bytes
*((int *)&output_ptr[0]) = _mm_cvtsi128_si32(srcRegFilt1);
output_ptr += output_pitch;
}
}
static WEBP_INLINE int DoQuantizeBlock(int16_t in[16], int16_t out[16],
const uint16_t* const sharpen,
const VP8Matrix* const mtx) {
const __m128i max_coeff_2047 = _mm_set1_epi16(MAX_LEVEL);
const __m128i zero = _mm_setzero_si128();
__m128i out0, out8;
__m128i packed_out;
// Load all inputs.
// TODO(cduvivier): Make variable declarations and allocations aligned so that
// we can use _mm_load_si128 instead of _mm_loadu_si128.
__m128i in0 = _mm_loadu_si128((__m128i*)&in[0]);
__m128i in8 = _mm_loadu_si128((__m128i*)&in[8]);
const __m128i iq0 = _mm_loadu_si128((const __m128i*)&mtx->iq_[0]);
const __m128i iq8 = _mm_loadu_si128((const __m128i*)&mtx->iq_[8]);
const __m128i q0 = _mm_loadu_si128((const __m128i*)&mtx->q_[0]);
const __m128i q8 = _mm_loadu_si128((const __m128i*)&mtx->q_[8]);
// coeff = abs(in)
__m128i coeff0 = _mm_abs_epi16(in0);
__m128i coeff8 = _mm_abs_epi16(in8);
// coeff = abs(in) + sharpen
if (sharpen != NULL) {
const __m128i sharpen0 = _mm_loadu_si128((const __m128i*)&sharpen[0]);
const __m128i sharpen8 = _mm_loadu_si128((const __m128i*)&sharpen[8]);
coeff0 = _mm_add_epi16(coeff0, sharpen0);
coeff8 = _mm_add_epi16(coeff8, sharpen8);
}
// out = (coeff * iQ + B) >> QFIX
{
// doing calculations with 32b precision (QFIX=17)
// out = (coeff * iQ)
const __m128i coeff_iQ0H = _mm_mulhi_epu16(coeff0, iq0);
const __m128i coeff_iQ0L = _mm_mullo_epi16(coeff0, iq0);
const __m128i coeff_iQ8H = _mm_mulhi_epu16(coeff8, iq8);
const __m128i coeff_iQ8L = _mm_mullo_epi16(coeff8, iq8);
__m128i out_00 = _mm_unpacklo_epi16(coeff_iQ0L, coeff_iQ0H);
__m128i out_04 = _mm_unpackhi_epi16(coeff_iQ0L, coeff_iQ0H);
__m128i out_08 = _mm_unpacklo_epi16(coeff_iQ8L, coeff_iQ8H);
__m128i out_12 = _mm_unpackhi_epi16(coeff_iQ8L, coeff_iQ8H);
// out = (coeff * iQ + B)
const __m128i bias_00 = _mm_loadu_si128((const __m128i*)&mtx->bias_[0]);
const __m128i bias_04 = _mm_loadu_si128((const __m128i*)&mtx->bias_[4]);
const __m128i bias_08 = _mm_loadu_si128((const __m128i*)&mtx->bias_[8]);
const __m128i bias_12 = _mm_loadu_si128((const __m128i*)&mtx->bias_[12]);
out_00 = _mm_add_epi32(out_00, bias_00);
out_04 = _mm_add_epi32(out_04, bias_04);
out_08 = _mm_add_epi32(out_08, bias_08);
out_12 = _mm_add_epi32(out_12, bias_12);
// out = QUANTDIV(coeff, iQ, B, QFIX)
out_00 = _mm_srai_epi32(out_00, QFIX);
out_04 = _mm_srai_epi32(out_04, QFIX);
out_08 = _mm_srai_epi32(out_08, QFIX);
out_12 = _mm_srai_epi32(out_12, QFIX);
// pack result as 16b
out0 = _mm_packs_epi32(out_00, out_04);
out8 = _mm_packs_epi32(out_08, out_12);
// if (coeff > 2047) coeff = 2047
out0 = _mm_min_epi16(out0, max_coeff_2047);
out8 = _mm_min_epi16(out8, max_coeff_2047);
}
// put sign back
out0 = _mm_sign_epi16(out0, in0);
out8 = _mm_sign_epi16(out8, in8);
// in = out * Q
in0 = _mm_mullo_epi16(out0, q0);
in8 = _mm_mullo_epi16(out8, q8);
_mm_storeu_si128((__m128i*)&in[0], in0);
_mm_storeu_si128((__m128i*)&in[8], in8);
// zigzag the output before storing it. The re-ordering is:
// 0 1 2 3 4 5 6 7 | 8 9 10 11 12 13 14 15
// -> 0 1 4[8]5 2 3 6 | 9 12 13 10 [7]11 14 15
// There's only two misplaced entries ([8] and [7]) that are crossing the
// reg's boundaries.
// We use pshufb instead of pshuflo/pshufhi.
{
const __m128i kCst_lo = PSHUFB_CST(0, 1, 4, -1, 5, 2, 3, 6);
const __m128i kCst_7 = PSHUFB_CST(-1, -1, -1, -1, 7, -1, -1, -1);
const __m128i tmp_lo = _mm_shuffle_epi8(out0, kCst_lo);
const __m128i tmp_7 = _mm_shuffle_epi8(out0, kCst_7); // extract #7
const __m128i kCst_hi = PSHUFB_CST(1, 4, 5, 2, -1, 3, 6, 7);
const __m128i kCst_8 = PSHUFB_CST(-1, -1, -1, 0, -1, -1, -1, -1);
const __m128i tmp_hi = _mm_shuffle_epi8(out8, kCst_hi);
const __m128i tmp_8 = _mm_shuffle_epi8(out8, kCst_8); // extract #8
const __m128i out_z0 = _mm_or_si128(tmp_lo, tmp_8);
const __m128i out_z8 = _mm_or_si128(tmp_hi, tmp_7);
_mm_storeu_si128((__m128i*)&out[0], out_z0);
_mm_storeu_si128((__m128i*)&out[8], out_z8);
packed_out = _mm_packs_epi16(out_z0, out_z8);
}
// detect if all 'out' values are zeroes or not
return (_mm_movemask_epi8(_mm_cmpeq_epi8(packed_out, zero)) != 0xffff);
}