x86: Add missing colons after assembly labels
[libav.git] / libavresample / resample_template.c
1 /*
2 * Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
3 *
4 * This file is part of Libav.
5 *
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include <math.h>
22 #include <stdint.h>
23
24 #include "libavutil/common.h"
25 #include "internal.h"
26
27 #if defined(CONFIG_RESAMPLE_DBL)
28 #define SET_TYPE(func) func ## _dbl
29 #define FELEM double
30 #define FELEM2 double
31 #define FELEML double
32 #define OUT(d, v) d = v
33 #define DBL_TO_FELEM(d, v) d = v
34 #elif defined(CONFIG_RESAMPLE_FLT)
35 #define SET_TYPE(func) func ## _flt
36 #define FELEM float
37 #define FELEM2 float
38 #define FELEML float
39 #define OUT(d, v) d = v
40 #define DBL_TO_FELEM(d, v) d = v
41 #elif defined(CONFIG_RESAMPLE_S32)
42 #define SET_TYPE(func) func ## _s32
43 #define FELEM int32_t
44 #define FELEM2 int64_t
45 #define FELEML int64_t
46 #define OUT(d, v) d = av_clipl_int32((v + (1 << 29)) >> 30)
47 #define DBL_TO_FELEM(d, v) d = av_clipl_int32(llrint(v * (1 << 30)));
48 #else
49 #define SET_TYPE(func) func ## _s16
50 #define FELEM int16_t
51 #define FELEM2 int32_t
52 #define FELEML int64_t
53 #define OUT(d, v) d = av_clip_int16((v + (1 << 14)) >> 15)
54 #define DBL_TO_FELEM(d, v) d = av_clip_int16(lrint(v * (1 << 15)))
55 #endif
56
57 static void SET_TYPE(resample_nearest)(void *dst0, int dst_index, const void *src0, unsigned int index)
58 {
59 FELEM *dst = dst0;
60 const FELEM *src = src0;
61 dst[dst_index] = src[index];
62 }
63
64 static void SET_TYPE(resample_linear)(ResampleContext *c, void *dst0, int dst_index,
65 const void *src0, unsigned int index, int frac)
66 {
67 FELEM *dst = dst0;
68 const FELEM *src = src0;
69 int i;
70 unsigned int sample_index = index >> c->phase_shift;
71 FELEM2 val = 0;
72 FELEM *filter = ((FELEM *)c->filter_bank) +
73 c->filter_length * (index & c->phase_mask);
74 FELEM2 v2 = 0;
75
76 for (i = 0; i < c->filter_length; i++) {
77 val += src[sample_index + i] * (FELEM2)filter[i];
78 v2 += src[sample_index + i] * (FELEM2)filter[i + c->filter_length];
79 }
80 val += (v2 - val) * (FELEML)frac / c->src_incr;
81
82 OUT(dst[dst_index], val);
83 }
84
85 static void SET_TYPE(resample_one)(ResampleContext *c,
86 void *dst0, int dst_index, const void *src0,
87 unsigned int index, int frac)
88 {
89 FELEM *dst = dst0;
90 const FELEM *src = src0;
91 int i;
92 unsigned int sample_index = index >> c->phase_shift;
93 FELEM2 val = 0;
94 FELEM *filter = ((FELEM *)c->filter_bank) +
95 c->filter_length * (index & c->phase_mask);
96
97 for (i = 0; i < c->filter_length; i++)
98 val += src[sample_index + i] * (FELEM2)filter[i];
99
100 OUT(dst[dst_index], val);
101 }
102
103 static void SET_TYPE(set_filter)(void *filter0, double *tab, int phase,
104 int tap_count)
105 {
106 int i;
107 FELEM *filter = ((FELEM *)filter0) + phase * tap_count;
108 for (i = 0; i < tap_count; i++) {
109 DBL_TO_FELEM(filter[i], tab[i]);
110 }
111 }
112
113 #undef SET_TYPE
114 #undef FELEM
115 #undef FELEM2
116 #undef FELEML
117 #undef OUT
118 #undef DBL_TO_FELEM