1 /*
2 * Copyright © 2023, VideoLAN and dav1d authors
3 * Copyright © 2023, Two Orioles, LLC
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice, this
10 * list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "config.h"
29
30 #include <string.h>
31
32 #include "common/attributes.h"
33
34 #include "src/pal.h"
35
36 // fill invisible edges and pack to 4-bit (2 pixels per byte)
pal_idx_finish_c(uint8_t * dst,const uint8_t * src,const int bw,const int bh,const int w,const int h)37 static void pal_idx_finish_c(uint8_t *dst, const uint8_t *src,
38 const int bw, const int bh,
39 const int w, const int h)
40 {
41 assert(bw >= 4 && bw <= 64 && !(bw & (bw - 1)));
42 assert(bh >= 4 && bh <= 64 && !(bh & (bh - 1)));
43 assert(w >= 4 && w <= bw && !(w & 3));
44 assert(h >= 4 && h <= bh && !(h & 3));
45
46 const int dst_w = w / 2;
47 const int dst_bw = bw / 2;
48
49 for (int y = 0; y < h; y++, src += bw, dst += dst_bw) {
50 for (int x = 0; x < dst_w; x++)
51 dst[x] = src[x * 2 + 0] | (src[x * 2 + 1] << 4);
52 if (dst_w < dst_bw)
53 memset(dst + dst_w, src[w - 1] * 0x11, dst_bw - dst_w);
54 }
55
56 if (h < bh) {
57 const uint8_t *const last_row = &dst[-dst_bw];
58 for (int y = h; y < bh; y++, dst += dst_bw)
59 memcpy(dst, last_row, dst_bw);
60 }
61 }
62
63 #if HAVE_ASM
64 #if ARCH_RISCV
65 #include "riscv/pal.h"
66 #elif ARCH_X86
67 #include "x86/pal.h"
68 #endif
69 #endif
70
dav1d_pal_dsp_init(Dav1dPalDSPContext * const c)71 COLD void dav1d_pal_dsp_init(Dav1dPalDSPContext *const c) {
72 c->pal_idx_finish = pal_idx_finish_c;
73
74 #if HAVE_ASM
75 #if ARCH_RISCV
76 pal_dsp_init_riscv(c);
77 #elif ARCH_X86
78 pal_dsp_init_x86(c);
79 #endif
80 #endif
81 }
82