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 "libavutil/attributes.h"
20 #include "libavutil/cpu.h"
21 #include "libavutil/x86/asm.h"
22 #include "libavutil/x86/cpu.h"
23 #include "libavfilter/vf_idet.h"
24
25 #if HAVE_X86ASM
26
27 /* declares main callable idet_filter_line_sse2() */
28 #define FUNC_MAIN_DECL(KIND, SPAN) \
29 int ff_idet_filter_line_##KIND(const uint8_t *a, const uint8_t *b, \
30 const uint8_t *c, int w); \
31 static int idet_filter_line_##KIND(const uint8_t *a, const uint8_t *b, \
32 const uint8_t *c, int w) { \
33 int sum = 0; \
34 const int left_over = w & (SPAN - 1); \
35 w -= left_over; \
36 if (w > 0) \
37 sum += ff_idet_filter_line_##KIND(a, b, c, w); \
38 if (left_over > 0) \
39 sum += ff_idet_filter_line_c(a + w, b + w, c + w, left_over); \
40 return sum; \
41 }
42
43
44 #define FUNC_MAIN_DECL_16bit(KIND, SPAN) \
45 int ff_idet_filter_line_16bit_##KIND(const uint16_t *a, const uint16_t *b, \
46 const uint16_t *c, int w); \
47 static int idet_filter_line_16bit_##KIND(const uint16_t *a, const uint16_t *b, \
48 const uint16_t *c, int w) { \
49 int sum = 0; \
50 const int left_over = w & (SPAN - 1); \
51 w -= left_over; \
52 if (w > 0) \
53 sum += ff_idet_filter_line_16bit_##KIND(a, b, c, w); \
54 if (left_over > 0) \
55 sum += ff_idet_filter_line_c_16bit(a + w, b + w, c + w, left_over); \
56 return sum; \
57 }
58
59 FUNC_MAIN_DECL(sse2, 16)
60 FUNC_MAIN_DECL_16bit(sse2, 8)
61
62 #endif
ff_idet_init_x86(IDETContext * idet,int for_16b)63 av_cold void ff_idet_init_x86(IDETContext *idet, int for_16b)
64 {
65 #if HAVE_X86ASM
66 const int cpu_flags = av_get_cpu_flags();
67
68 if (EXTERNAL_SSE2(cpu_flags)) {
69 idet->filter_line = for_16b ? (ff_idet_filter_func)idet_filter_line_16bit_sse2 : idet_filter_line_sse2;
70 }
71 #endif // HAVE_X86ASM
72 }
73