ref: e1ae3772da960ce616c6204491e7f57cb05dcd28
dir: /vp9/encoder/x86/vp9_frame_scale_ssse3.c/
/*
* Copyright (c) 2016 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <tmmintrin.h> // SSSE3
#include "./vp9_rtcd.h"
#include "./vpx_dsp_rtcd.h"
#include "./vpx_scale_rtcd.h"
#include "vpx_dsp/x86/convolve_ssse3.h"
#include "vpx_dsp/x86/mem_sse2.h"
#include "vpx_scale/yv12config.h"
static void scale_plane_2_to_1_phase_0(const uint8_t *src,
const ptrdiff_t src_stride, uint8_t *dst,
const ptrdiff_t dst_stride,
const int dst_w, const int dst_h) {
const __m128i mask = _mm_set1_epi16(0x00FF);
const int max_width = (dst_w + 15) & ~15;
int y = dst_h;
do {
int x = max_width;
do {
const __m128i a = _mm_loadu_si128((const __m128i *)(src + 0));
const __m128i b = _mm_loadu_si128((const __m128i *)(src + 16));
const __m128i a_and = _mm_and_si128(a, mask);
const __m128i b_and = _mm_and_si128(b, mask);
const __m128i c = _mm_packus_epi16(a_and, b_and);
_mm_storeu_si128((__m128i *)dst, c);
src += 32;
dst += 16;
x -= 16;
} while (x);
src += 2 * (src_stride - max_width);
dst += dst_stride - max_width;
} while (--y);
}
static INLINE __m128i scale_1_to_2_phase_0_kernel(const __m128i *const s,
const __m128i *const f) {
__m128i ss[4], temp;
ss[0] = _mm_unpacklo_epi8(s[0], s[1]);
ss[1] = _mm_unpacklo_epi8(s[2], s[3]);
ss[2] = _mm_unpacklo_epi8(s[4], s[5]);
ss[3] = _mm_unpacklo_epi8(s[6], s[7]);
temp = convolve8_8_ssse3(ss, f);
return _mm_packus_epi16(temp, temp);
}
// Only calculate odd columns since even columns are just src pixels' copies.
static void scale_1_to_2_phase_0_row(const uint8_t *src, uint8_t *dst,
const int w, const __m128i *const f) {
int x = w;
do {
__m128i s[8], temp;
s[0] = _mm_loadl_epi64((const __m128i *)(src + 0));
s[1] = _mm_loadl_epi64((const __m128i *)(src + 1));
s[2] = _mm_loadl_epi64((const __m128i *)(src + 2));
s[3] = _mm_loadl_epi64((const __m128i *)(src + 3));
s[4] = _mm_loadl_epi64((const __m128i *)(src + 4));
s[5] = _mm_loadl_epi64((const __m128i *)(src + 5));
s[6] = _mm_loadl_epi64((const __m128i *)(src + 6));
s[7] = _mm_loadl_epi64((const __m128i *)(src + 7));
temp = scale_1_to_2_phase_0_kernel(s, f);
_mm_storel_epi64((__m128i *)dst, temp);
src += 8;
dst += 8;
x -= 8;
} while (x);
}
static void scale_plane_1_to_2_phase_0(const uint8_t *src,
const ptrdiff_t src_stride, uint8_t *dst,
const ptrdiff_t dst_stride,
const int src_w, const int src_h,
const int16_t *const coef,
uint8_t *const temp_buffer) {
int max_width;
int y;
uint8_t *tmp[9];
__m128i f[4];
max_width = (src_w + 7) & ~7;
tmp[0] = temp_buffer + 0 * max_width;
tmp[1] = temp_buffer + 1 * max_width;
tmp[2] = temp_buffer + 2 * max_width;
tmp[3] = temp_buffer + 3 * max_width;
tmp[4] = temp_buffer + 4 * max_width;
tmp[5] = temp_buffer + 5 * max_width;
tmp[6] = temp_buffer + 6 * max_width;
tmp[7] = temp_buffer + 7 * max_width;
shuffle_filter_ssse3(coef, f);
scale_1_to_2_phase_0_row(src - 3 * src_stride - 3, tmp[0], max_width, f);
scale_1_to_2_phase_0_row(src - 2 * src_stride - 3, tmp[1], max_width, f);
scale_1_to_2_phase_0_row(src - 1 * src_stride - 3, tmp[2], max_width, f);
scale_1_to_2_phase_0_row(src + 0 * src_stride - 3, tmp[3], max_width, f);
scale_1_to_2_phase_0_row(src + 1 * src_stride - 3, tmp[4], max_width, f);
scale_1_to_2_phase_0_row(src + 2 * src_stride - 3, tmp[5], max_width, f);
scale_1_to_2_phase_0_row(src + 3 * src_stride - 3, tmp[6], max_width, f);
y = src_h;
do {
int x;
scale_1_to_2_phase_0_row(src + 4 * src_stride - 3, tmp[7], max_width, f);
for (x = 0; x < max_width; x += 8) {
__m128i s[8], C, D, CD;
// Even rows
const __m128i a = _mm_loadl_epi64((const __m128i *)(src + x));
const __m128i b = _mm_loadl_epi64((const __m128i *)(tmp[3] + x));
const __m128i ab = _mm_unpacklo_epi8(a, b);
_mm_storeu_si128((__m128i *)(dst + 2 * x), ab);
// Odd rows
// Even columns
load_8bit_8x8(src + x - 3 * src_stride, src_stride, s);
C = scale_1_to_2_phase_0_kernel(s, f);
// Odd columns
s[0] = _mm_loadl_epi64((const __m128i *)(tmp[0] + x));
s[1] = _mm_loadl_epi64((const __m128i *)(tmp[1] + x));
s[2] = _mm_loadl_epi64((const __m128i *)(tmp[2] + x));
s[3] = _mm_loadl_epi64((const __m128i *)(tmp[3] + x));
s[4] = _mm_loadl_epi64((const __m128i *)(tmp[4] + x));
s[5] = _mm_loadl_epi64((const __m128i *)(tmp[5] + x));
s[6] = _mm_loadl_epi64((const __m128i *)(tmp[6] + x));
s[7] = _mm_loadl_epi64((const __m128i *)(tmp[7] + x));
D = scale_1_to_2_phase_0_kernel(s, f);
CD = _mm_unpacklo_epi8(C, D);
_mm_storeu_si128((__m128i *)(dst + dst_stride + 2 * x), CD);
}
src += src_stride;
dst += 2 * dst_stride;
tmp[8] = tmp[0];
tmp[0] = tmp[1];
tmp[1] = tmp[2];
tmp[2] = tmp[3];
tmp[3] = tmp[4];
tmp[4] = tmp[5];
tmp[5] = tmp[6];
tmp[6] = tmp[7];
tmp[7] = tmp[8];
} while (--y);
}
void vp9_scale_and_extend_frame_ssse3(const YV12_BUFFER_CONFIG *src,
YV12_BUFFER_CONFIG *dst,
uint8_t filter_type, int phase_scaler) {
const int src_w = src->y_crop_width;
const int src_h = src->y_crop_height;
const int dst_w = dst->y_crop_width;
const int dst_h = dst->y_crop_height;
int scaled = 0;
if (dst_w * 2 == src_w && dst_h * 2 == src_h && phase_scaler == 0) {
// 2 to 1
const int dst_uv_w = dst_w / 2;
const int dst_uv_h = dst_h / 2;
scaled = 1;
scale_plane_2_to_1_phase_0(src->y_buffer, src->y_stride, dst->y_buffer,
dst->y_stride, dst_w, dst_h);
scale_plane_2_to_1_phase_0(src->u_buffer, src->uv_stride, dst->u_buffer,
dst->uv_stride, dst_uv_w, dst_uv_h);
scale_plane_2_to_1_phase_0(src->v_buffer, src->uv_stride, dst->v_buffer,
dst->uv_stride, dst_uv_w, dst_uv_h);
} else if (dst_w == src_w * 2 && dst_h == src_h * 2 && phase_scaler == 0) {
// 1 to 2
uint8_t *const temp_buffer = (uint8_t *)malloc(8 * ((src_w + 7) & ~7));
if (temp_buffer) {
scaled = 1;
scale_plane_1_to_2_phase_0(
src->y_buffer, src->y_stride, dst->y_buffer, dst->y_stride, src_w,
src_h, vp9_filter_kernels[filter_type][8], temp_buffer);
scale_plane_1_to_2_phase_0(src->u_buffer, src->uv_stride, dst->u_buffer,
dst->uv_stride, src_w / 2, src_h / 2,
vp9_filter_kernels[filter_type][8],
temp_buffer);
scale_plane_1_to_2_phase_0(src->v_buffer, src->uv_stride, dst->v_buffer,
dst->uv_stride, src_w / 2, src_h / 2,
vp9_filter_kernels[filter_type][8],
temp_buffer);
free(temp_buffer);
}
}
if (scaled) {
vpx_extend_frame_borders(dst);
} else {
// Call c version for all other scaling ratios.
vp9_scale_and_extend_frame_c(src, dst, filter_type, phase_scaler);
}
}