Imported Debian version 2.5.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / pixblockdsp.c
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
33 static 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
54 av_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 }