77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
/*
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* Copyright © 2023, VideoLAN and dav1d authors
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* Copyright © 2023, Two Orioles, LLC
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include <string.h>
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#include "common/attributes.h"
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#include "src/pal.h"
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// fill invisible edges and pack to 4-bit (2 pixels per byte)
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static void pal_idx_finish_c(uint8_t *dst, const uint8_t *src,
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const int bw, const int bh,
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const int w, const int h)
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{
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assert(bw >= 4 && bw <= 64 && !(bw & (bw - 1)));
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assert(bh >= 4 && bh <= 64 && !(bh & (bh - 1)));
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assert(w >= 4 && w <= bw && !(w & 3));
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assert(h >= 4 && h <= bh && !(h & 3));
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const int dst_w = w / 2;
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const int dst_bw = bw / 2;
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for (int y = 0; y < h; y++, src += bw, dst += dst_bw) {
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for (int x = 0; x < dst_w; x++)
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dst[x] = src[x * 2 + 0] | (src[x * 2 + 1] << 4);
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if (dst_w < dst_bw)
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memset(dst + dst_w, src[w - 1] * 0x11, dst_bw - dst_w);
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}
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if (h < bh) {
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const uint8_t *const last_row = &dst[-dst_bw];
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for (int y = h; y < bh; y++, dst += dst_bw)
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memcpy(dst, last_row, dst_bw);
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}
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}
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#if HAVE_ASM
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#if ARCH_X86
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#include "src/x86/pal.h"
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#endif
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#endif
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COLD void dav1d_pal_dsp_init(Dav1dPalDSPContext *const c) {
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c->pal_idx_finish = pal_idx_finish_c;
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#if HAVE_ASM
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#if ARCH_X86
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pal_dsp_init_x86(c);
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#endif
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#endif
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}
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