mirror of
https://github.com/kasmtech/KasmVNC.git
synced 2024-11-25 09:33:50 +01:00
5b28a168d0
* Initial binary clipboard support * Rename -DLP_Clip_Types to -DLP_ClipTypes * Better handling of websocket frames * Copy-paste bug in SSE2 scaling to under 0.5x * Remove old text clipboard * Bind text to binary clipboard * Move binclip clear to probing phase * Off-by-one in sse2 scaling * Add a clarifying log message for INCR clipboard transfers * WIP: Update novnc commit * Fix CentOS pipeline * webpack fix * Update novnc commit * Change some DLP defaults * update novnc commit Co-authored-by: Lauri Kasanen <cand@gmx.com> Co-authored-by: matt <matt@kasmweb.com>
258 lines
6.2 KiB
C++
258 lines
6.2 KiB
C++
/* Copyright (C) 2021 Kasm Web
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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#include <emmintrin.h>
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#include <rfb/scale_sse2.h>
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namespace rfb {
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/*
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static void print128(const char msg[], const __m128i v) {
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union {
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__m128i v;
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uint8_t c[16];
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} u;
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u.v = v;
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printf("%s %02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x\n",
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msg,
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u.c[0],
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u.c[1],
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u.c[2],
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u.c[3],
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u.c[4],
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u.c[5],
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u.c[6],
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u.c[7],
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u.c[8],
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u.c[9],
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u.c[10],
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u.c[11],
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u.c[12],
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u.c[13],
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u.c[14],
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u.c[15]);
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}
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*/
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void SSE2_halve(const uint8_t *oldpx,
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const uint16_t tgtw, const uint16_t tgth,
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uint8_t *newpx,
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const unsigned oldstride, const unsigned newstride) {
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uint16_t x, y;
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const uint16_t srcw = tgtw * 2, srch = tgth * 2;
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const __m128i zero = _mm_setzero_si128();
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const __m128i shift = _mm_set_epi32(0, 0, 0, 2);
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const __m128i low = _mm_set_epi32(0, 0, 0xffffffff, 0xffffffff);
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const __m128i high = _mm_set_epi32(0xffffffff, 0xffffffff, 0, 0);
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for (y = 0; y < srch; y += 2) {
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const uint8_t * const row0 = oldpx + oldstride * y * 4;
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const uint8_t * const row1 = oldpx + oldstride * (y + 1) * 4;
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uint8_t * const dst = newpx + newstride * (y / 2) * 4;
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for (x = 0; x < srcw - 3; x += 4) {
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__m128i lo, hi, a, b, c, d;
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lo = _mm_loadu_si128((__m128i *) &row0[x * 4]);
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hi = _mm_loadu_si128((__m128i *) &row1[x * 4]);
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a = _mm_unpacklo_epi8(lo, zero);
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b = _mm_unpackhi_epi8(lo, zero);
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c = _mm_unpacklo_epi8(hi, zero);
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d = _mm_unpackhi_epi8(hi, zero);
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a = _mm_add_epi16(a, c);
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b = _mm_add_epi16(b, d);
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c = _mm_srli_si128(a, 8);
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a = _mm_and_si128(a, low);
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a = _mm_add_epi16(a, c);
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d = _mm_slli_si128(b, 8);
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b = _mm_and_si128(b, high);
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b = _mm_add_epi16(b, d);
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a = _mm_add_epi16(a, b);
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a = _mm_srl_epi16(a, shift);
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a = _mm_packus_epi16(a, zero);
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_mm_storel_epi64((__m128i *) &dst[(x / 2) * 4], a);
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}
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for (; x < srcw; x += 2) {
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// Remainder in C
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uint8_t i;
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for (i = 0; i < 4; i++) {
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dst[(x / 2) * 4 + i] =
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(row0[x * 4 + i] +
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row0[(x + 1) * 4 + i] +
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row1[x * 4 + i] +
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row1[(x + 1) * 4 + i]) / 4;
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}
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}
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}
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}
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// Handles factors between 0.5 and 1.0
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void SSE2_scale(const uint8_t *oldpx,
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const uint16_t tgtw, const uint16_t tgth,
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uint8_t *newpx,
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const unsigned oldstride, const unsigned newstride,
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const float tgtdiff) {
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uint16_t x, y;
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const __m128i zero = _mm_setzero_si128();
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const __m128i low = _mm_set_epi32(0, 0, 0xffffffff, 0xffffffff);
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const __m128i high = _mm_set_epi32(0xffffffff, 0xffffffff, 0, 0);
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const float invdiff = 1 / tgtdiff;
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for (y = 0; y < tgth; y++) {
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const float ny = y * invdiff;
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const uint16_t lowy = ny;
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const uint16_t highy = lowy + 1;
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const uint16_t bot = (ny - lowy) * 256;
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const uint16_t top = 256 - bot;
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const uint32_t * const row0 = (uint32_t *) (oldpx + oldstride * lowy * 4);
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const uint32_t * const row1 = (uint32_t *) (oldpx + oldstride * highy * 4);
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const uint8_t * const brow0 = (uint8_t *) row0;
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const uint8_t * const brow1 = (uint8_t *) row1;
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uint8_t * const dst = newpx + newstride * y * 4;
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const __m128i vertmul = _mm_set1_epi16(top);
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const __m128i vertmul2 = _mm_set1_epi16(bot);
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for (x = 0; x < tgtw - 1; x += 2) {
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const float nx[2] = {
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x * invdiff,
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(x + 1) * invdiff,
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};
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const uint16_t lowx[2] = {
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(uint16_t) nx[0],
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(uint16_t) nx[1],
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};
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const uint16_t highx[2] = {
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(uint16_t) (lowx[0] + 1),
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(uint16_t) (lowx[1] + 1),
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};
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const uint16_t right[2] = {
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(uint16_t) ((nx[0] - lowx[0]) * 256),
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(uint16_t) ((nx[1] - lowx[1]) * 256),
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};
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const uint16_t left[2] = {
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(uint16_t) (256 - right[0]),
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(uint16_t) (256 - right[1]),
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};
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const __m128i horzmul = _mm_set_epi16(
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right[0],
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right[0],
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right[0],
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right[0],
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left[0],
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left[0],
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left[0],
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left[0]
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);
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const __m128i horzmul2 = _mm_set_epi16(
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right[1],
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right[1],
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right[1],
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right[1],
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left[1],
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left[1],
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left[1],
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left[1]
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);
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__m128i lo, hi, a, b, c, d;
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lo = _mm_setr_epi32(row0[lowx[0]],
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row0[highx[0]],
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row0[lowx[1]],
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row0[highx[1]]);
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hi = _mm_setr_epi32(row1[lowx[0]],
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row1[highx[0]],
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row1[lowx[1]],
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row1[highx[1]]);
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a = _mm_unpacklo_epi8(lo, zero);
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b = _mm_unpackhi_epi8(lo, zero);
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c = _mm_unpacklo_epi8(hi, zero);
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d = _mm_unpackhi_epi8(hi, zero);
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a = _mm_mullo_epi16(a, vertmul);
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b = _mm_mullo_epi16(b, vertmul);
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c = _mm_mullo_epi16(c, vertmul2);
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d = _mm_mullo_epi16(d, vertmul2);
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a = _mm_add_epi16(a, c);
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a = _mm_srli_epi16(a, 8);
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b = _mm_add_epi16(b, d);
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b = _mm_srli_epi16(b, 8);
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a = _mm_mullo_epi16(a, horzmul);
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b = _mm_mullo_epi16(b, horzmul2);
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lo = _mm_srli_si128(a, 8);
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a = _mm_and_si128(a, low);
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a = _mm_add_epi16(a, lo);
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hi = _mm_slli_si128(b, 8);
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b = _mm_and_si128(b, high);
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b = _mm_add_epi16(b, hi);
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a = _mm_add_epi16(a, b);
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a = _mm_srli_epi16(a, 8);
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a = _mm_packus_epi16(a, zero);
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_mm_storel_epi64((__m128i *) &dst[x * 4], a);
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}
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for (; x < tgtw; x++) {
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// Remainder in C
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const float nx = x * invdiff;
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const uint16_t lowx = nx;
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const uint16_t highx = lowx + 1;
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const uint16_t right = (nx - lowx) * 256;
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const uint16_t left = 256 - right;
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uint8_t i;
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uint32_t val, val2;
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for (i = 0; i < 4; i++) {
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val = brow0[lowx * 4 + i] * left;
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val += brow0[highx * 4 + i] * right;
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val >>= 8;
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val2 = brow1[lowx * 4 + i] * left;
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val2 += brow1[highx * 4 + i] * right;
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val2 >>= 8;
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dst[x * 4 + i] =
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(val * top + val2 * bot) >> 8;
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}
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}
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}
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}
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}; // namespace rfb
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