1/*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19#include <stdint.h>
20
21#include "config.h"
22#include "libavutil/attributes.h"
23#include "avcodec.h"
24#include "pixblockdsp.h"
25
26#define BIT_DEPTH 16
27#include "pixblockdsp_template.c"
28#undef BIT_DEPTH
29
30#define BIT_DEPTH 8
31#include "pixblockdsp_template.c"
32
33static void diff_pixels_c(int16_t *av_restrict block, const uint8_t *s1,
34                          const uint8_t *s2, int stride)
35{
36    int i;
37
38    /* read the pixels */
39    for (i = 0; i < 8; i++) {
40        block[0] = s1[0] - s2[0];
41        block[1] = s1[1] - s2[1];
42        block[2] = s1[2] - s2[2];
43        block[3] = s1[3] - s2[3];
44        block[4] = s1[4] - s2[4];
45        block[5] = s1[5] - s2[5];
46        block[6] = s1[6] - s2[6];
47        block[7] = s1[7] - s2[7];
48        s1      += stride;
49        s2      += stride;
50        block   += 8;
51    }
52}
53
54av_cold void ff_pixblockdsp_init(PixblockDSPContext *c, AVCodecContext *avctx)
55{
56    const unsigned high_bit_depth = avctx->bits_per_raw_sample > 8;
57
58    c->diff_pixels = diff_pixels_c;
59
60    switch (avctx->bits_per_raw_sample) {
61    case 9:
62    case 10:
63    case 12:
64    case 14:
65        c->get_pixels = get_pixels_16_c;
66        break;
67    default:
68        if (avctx->bits_per_raw_sample<=8 || avctx->codec_type != AVMEDIA_TYPE_VIDEO) {
69            c->get_pixels = get_pixels_8_c;
70        }
71        break;
72    }
73
74    if (ARCH_ALPHA)
75        ff_pixblockdsp_init_alpha(c, avctx, high_bit_depth);
76    if (ARCH_ARM)
77        ff_pixblockdsp_init_arm(c, avctx, high_bit_depth);
78    if (ARCH_PPC)
79        ff_pixblockdsp_init_ppc(c, avctx, high_bit_depth);
80    if (ARCH_X86)
81        ff_pixblockdsp_init_x86(c, avctx, high_bit_depth);
82}
83