ref: f0a22b23feed4977c36acce1d6b1a0d53af6beb8
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_scale/yv12config.h" extern void vp9_scale_and_extend_frame_c(const YV12_BUFFER_CONFIG *src, YV12_BUFFER_CONFIG *dst); static void downsample_2_to_1_ssse3(const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst, ptrdiff_t dst_stride, int w, int h) { const __m128i mask = _mm_set1_epi16(0x00FF); const int max_width = w & ~15; int y; for (y = 0; y < h; ++y) { int x; for (x = 0; x < max_width; x += 16) { const __m128i a = _mm_loadu_si128((const __m128i *)(src + x * 2 + 0)); const __m128i b = _mm_loadu_si128((const __m128i *)(src + x * 2 + 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 + x), c); } for (; x < w; ++x) dst[x] = src[x * 2]; src += src_stride * 2; dst += dst_stride; } } static INLINE __m128i filter(const __m128i *const a, const __m128i *const b, const __m128i *const c, const __m128i *const d, const __m128i *const e, const __m128i *const f, const __m128i *const g, const __m128i *const h) { const __m128i coeffs_ab = _mm_set_epi8(6, -1, 6, -1, 6, -1, 6, -1, 6, -1, 6, -1, 6, -1, 6, -1); const __m128i coeffs_cd = _mm_set_epi8(78, -19, 78, -19, 78, -19, 78, -19, 78, -19, 78, -19, 78, -19, 78, -19); const __m128i const64_x16 = _mm_set1_epi16(64); const __m128i ab = _mm_unpacklo_epi8(*a, *b); const __m128i cd = _mm_unpacklo_epi8(*c, *d); const __m128i fe = _mm_unpacklo_epi8(*f, *e); const __m128i hg = _mm_unpacklo_epi8(*h, *g); const __m128i ab_terms = _mm_maddubs_epi16(ab, coeffs_ab); const __m128i cd_terms = _mm_maddubs_epi16(cd, coeffs_cd); const __m128i fe_terms = _mm_maddubs_epi16(fe, coeffs_cd); const __m128i hg_terms = _mm_maddubs_epi16(hg, coeffs_ab); // can not overflow const __m128i abcd_terms = _mm_add_epi16(ab_terms, cd_terms); // can not overflow const __m128i fehg_terms = _mm_add_epi16(fe_terms, hg_terms); // can overflow, use saturating add const __m128i terms = _mm_adds_epi16(abcd_terms, fehg_terms); const __m128i round = _mm_adds_epi16(terms, const64_x16); const __m128i shift = _mm_srai_epi16(round, 7); return _mm_packus_epi16(shift, shift); } static void eight_tap_row_ssse3(const uint8_t *src, uint8_t *dst, int w) { const int max_width = w & ~7; int x = 0; for (; x < max_width; x += 8) { const __m128i a = _mm_loadl_epi64((const __m128i *)(src + x + 0)); const __m128i b = _mm_loadl_epi64((const __m128i *)(src + x + 1)); const __m128i c = _mm_loadl_epi64((const __m128i *)(src + x + 2)); const __m128i d = _mm_loadl_epi64((const __m128i *)(src + x + 3)); const __m128i e = _mm_loadl_epi64((const __m128i *)(src + x + 4)); const __m128i f = _mm_loadl_epi64((const __m128i *)(src + x + 5)); const __m128i g = _mm_loadl_epi64((const __m128i *)(src + x + 6)); const __m128i h = _mm_loadl_epi64((const __m128i *)(src + x + 7)); const __m128i pack = filter(&a, &b, &c, &d, &e, &f, &g, &h); _mm_storel_epi64((__m128i *)(dst + x), pack); } } static void upsample_1_to_2_ssse3(const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst, ptrdiff_t dst_stride, int dst_w, int dst_h) { dst_w /= 2; dst_h /= 2; { DECLARE_ALIGNED(16, uint8_t, tmp[1920 * 8]); uint8_t *tmp0 = tmp + dst_w * 0; uint8_t *tmp1 = tmp + dst_w * 1; uint8_t *tmp2 = tmp + dst_w * 2; uint8_t *tmp3 = tmp + dst_w * 3; uint8_t *tmp4 = tmp + dst_w * 4; uint8_t *tmp5 = tmp + dst_w * 5; uint8_t *tmp6 = tmp + dst_w * 6; uint8_t *tmp7 = tmp + dst_w * 7; uint8_t *tmp8 = NULL; const int max_width = dst_w & ~7; int y; eight_tap_row_ssse3(src - src_stride * 3 - 3, tmp0, dst_w); eight_tap_row_ssse3(src - src_stride * 2 - 3, tmp1, dst_w); eight_tap_row_ssse3(src - src_stride * 1 - 3, tmp2, dst_w); eight_tap_row_ssse3(src + src_stride * 0 - 3, tmp3, dst_w); eight_tap_row_ssse3(src + src_stride * 1 - 3, tmp4, dst_w); eight_tap_row_ssse3(src + src_stride * 2 - 3, tmp5, dst_w); eight_tap_row_ssse3(src + src_stride * 3 - 3, tmp6, dst_w); for (y = 0; y < dst_h; y++) { int x; eight_tap_row_ssse3(src + src_stride * 4 - 3, tmp7, dst_w); for (x = 0; x < max_width; x += 8) { const __m128i A = _mm_loadl_epi64((const __m128i *)(src + x)); const __m128i B = _mm_loadl_epi64((const __m128i *)(tmp3 + x)); const __m128i AB = _mm_unpacklo_epi8(A, B); __m128i C, D, CD; _mm_storeu_si128((__m128i *)(dst + x * 2), AB); { const __m128i a = _mm_loadl_epi64((const __m128i *)(src + x - src_stride * 3)); const __m128i b = _mm_loadl_epi64((const __m128i *)(src + x - src_stride * 2)); const __m128i c = _mm_loadl_epi64((const __m128i *)(src + x - src_stride * 1)); const __m128i d = _mm_loadl_epi64((const __m128i *)(src + x + src_stride * 0)); const __m128i e = _mm_loadl_epi64((const __m128i *)(src + x + src_stride * 1)); const __m128i f = _mm_loadl_epi64((const __m128i *)(src + x + src_stride * 2)); const __m128i g = _mm_loadl_epi64((const __m128i *)(src + x + src_stride * 3)); const __m128i h = _mm_loadl_epi64((const __m128i *)(src + x + src_stride * 4)); C = filter(&a, &b, &c, &d, &e, &f, &g, &h); } { const __m128i a = _mm_loadl_epi64((const __m128i *)(tmp0 + x)); const __m128i b = _mm_loadl_epi64((const __m128i *)(tmp1 + x)); const __m128i c = _mm_loadl_epi64((const __m128i *)(tmp2 + x)); const __m128i d = _mm_loadl_epi64((const __m128i *)(tmp3 + x)); const __m128i e = _mm_loadl_epi64((const __m128i *)(tmp4 + x)); const __m128i f = _mm_loadl_epi64((const __m128i *)(tmp5 + x)); const __m128i g = _mm_loadl_epi64((const __m128i *)(tmp6 + x)); const __m128i h = _mm_loadl_epi64((const __m128i *)(tmp7 + x)); D = filter(&a, &b, &c, &d, &e, &f, &g, &h); } CD = _mm_unpacklo_epi8(C, D); _mm_storeu_si128((__m128i *)(dst + x * 2 + dst_stride), CD); } src += src_stride; dst += dst_stride * 2; tmp8 = tmp0; tmp0 = tmp1; tmp1 = tmp2; tmp2 = tmp3; tmp3 = tmp4; tmp4 = tmp5; tmp5 = tmp6; tmp6 = tmp7; tmp7 = tmp8; } } } void vp9_scale_and_extend_frame_ssse3(const YV12_BUFFER_CONFIG *src, YV12_BUFFER_CONFIG *dst) { 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; const int dst_uv_w = dst_w / 2; const int dst_uv_h = dst_h / 2; if (dst_w * 2 == src_w && dst_h * 2 == src_h) { downsample_2_to_1_ssse3(src->y_buffer, src->y_stride, dst->y_buffer, dst->y_stride, dst_w, dst_h); downsample_2_to_1_ssse3(src->u_buffer, src->uv_stride, dst->u_buffer, dst->uv_stride, dst_uv_w, dst_uv_h); downsample_2_to_1_ssse3(src->v_buffer, src->uv_stride, dst->v_buffer, dst->uv_stride, dst_uv_w, dst_uv_h); vpx_extend_frame_borders(dst); } else if (dst_w == src_w * 2 && dst_h == src_h * 2) { // The upsample() supports widths up to 1920 * 2. If greater, fall back // to vp9_scale_and_extend_frame_c(). if (dst_w / 2 <= 1920) { upsample_1_to_2_ssse3(src->y_buffer, src->y_stride, dst->y_buffer, dst->y_stride, dst_w, dst_h); upsample_1_to_2_ssse3(src->u_buffer, src->uv_stride, dst->u_buffer, dst->uv_stride, dst_uv_w, dst_uv_h); upsample_1_to_2_ssse3(src->v_buffer, src->uv_stride, dst->v_buffer, dst->uv_stride, dst_uv_w, dst_uv_h); vpx_extend_frame_borders(dst); } else { vp9_scale_and_extend_frame_c(src, dst); } } else { vp9_scale_and_extend_frame_c(src, dst); } }