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