2 * This file is part of FFmpeg.
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.
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.
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
21 #include "libavutil/attributes.h"
22 #include "libavutil/common.h"
25 static inline uint32_t clipf_c_one(uint32_t a, uint32_t mini,
26 uint32_t maxi, uint32_t maxisign)
30 else if ((a ^ (1U << 31)) > maxisign)
36 static void vector_clipf_c_opposite_sign(float *dst, const float *src,
37 float *min, float *max, int len)
40 uint32_t mini = *(uint32_t *) min;
41 uint32_t maxi = *(uint32_t *) max;
42 uint32_t maxisign = maxi ^ (1U << 31);
43 uint32_t *dsti = (uint32_t *) dst;
44 const uint32_t *srci = (const uint32_t *) src;
46 for (i = 0; i < len; i += 8) {
47 dsti[i + 0] = clipf_c_one(srci[i + 0], mini, maxi, maxisign);
48 dsti[i + 1] = clipf_c_one(srci[i + 1], mini, maxi, maxisign);
49 dsti[i + 2] = clipf_c_one(srci[i + 2], mini, maxi, maxisign);
50 dsti[i + 3] = clipf_c_one(srci[i + 3], mini, maxi, maxisign);
51 dsti[i + 4] = clipf_c_one(srci[i + 4], mini, maxi, maxisign);
52 dsti[i + 5] = clipf_c_one(srci[i + 5], mini, maxi, maxisign);
53 dsti[i + 6] = clipf_c_one(srci[i + 6], mini, maxi, maxisign);
54 dsti[i + 7] = clipf_c_one(srci[i + 7], mini, maxi, maxisign);
58 static void vector_clipf_c(float *dst, const float *src, int len,
63 if (min < 0 && max > 0) {
64 vector_clipf_c_opposite_sign(dst, src, &min, &max, len);
66 for (i = 0; i < len; i += 8) {
67 dst[i] = av_clipf(src[i], min, max);
68 dst[i + 1] = av_clipf(src[i + 1], min, max);
69 dst[i + 2] = av_clipf(src[i + 2], min, max);
70 dst[i + 3] = av_clipf(src[i + 3], min, max);
71 dst[i + 4] = av_clipf(src[i + 4], min, max);
72 dst[i + 5] = av_clipf(src[i + 5], min, max);
73 dst[i + 6] = av_clipf(src[i + 6], min, max);
74 dst[i + 7] = av_clipf(src[i + 7], min, max);
79 static int32_t scalarproduct_int16_c(const int16_t *v1, const int16_t *v2,
90 static void vector_clip_int32_c(int32_t *dst, const int32_t *src, int32_t min,
91 int32_t max, unsigned int len)
94 *dst++ = av_clip(*src++, min, max);
95 *dst++ = av_clip(*src++, min, max);
96 *dst++ = av_clip(*src++, min, max);
97 *dst++ = av_clip(*src++, min, max);
98 *dst++ = av_clip(*src++, min, max);
99 *dst++ = av_clip(*src++, min, max);
100 *dst++ = av_clip(*src++, min, max);
101 *dst++ = av_clip(*src++, min, max);
106 av_cold void ff_audiodsp_init(AudioDSPContext *c)
108 c->scalarproduct_int16 = scalarproduct_int16_c;
109 c->vector_clip_int32 = vector_clip_int32_c;
110 c->vector_clipf = vector_clipf_c;
113 ff_audiodsp_init_arm(c);
115 ff_audiodsp_init_ppc(c);
117 ff_audiodsp_init_x86(c);