FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/anlms_template.c
Date: 2024-04-19 07:31:02
Exec Total Coverage
Lines: 0 60 0.0%
Functions: 0 5 0.0%
Branches: 0 12 0.0%

Line Branch Exec Source
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 #undef ONE
20 #undef ftype
21 #undef SAMPLE_FORMAT
22 #if DEPTH == 32
23 #define SAMPLE_FORMAT float
24 #define ftype float
25 #define ONE 1.f
26 #else
27 #define SAMPLE_FORMAT double
28 #define ftype double
29 #define ONE 1.0
30 #endif
31
32 #define fn3(a,b) a##_##b
33 #define fn2(a,b) fn3(a,b)
34 #define fn(a) fn2(a, SAMPLE_FORMAT)
35
36 #if DEPTH == 64
37 static double scalarproduct_double(const double *v1, const double *v2, int len)
38 {
39 double p = 0.0;
40
41 for (int i = 0; i < len; i++)
42 p += v1[i] * v2[i];
43
44 return p;
45 }
46 #endif
47
48 static ftype fn(fir_sample)(AudioNLMSContext *s, ftype sample, ftype *delay,
49 ftype *coeffs, ftype *tmp, int *offset)
50 {
51 const int order = s->order;
52 ftype output;
53
54 delay[*offset] = sample;
55
56 memcpy(tmp, coeffs + order - *offset, order * sizeof(ftype));
57
58 #if DEPTH == 32
59 output = s->fdsp->scalarproduct_float(delay, tmp, s->kernel_size);
60 #else
61 output = scalarproduct_double(delay, tmp, s->kernel_size);
62 #endif
63
64 if (--(*offset) < 0)
65 *offset = order - 1;
66
67 return output;
68 }
69
70 static ftype fn(process_sample)(AudioNLMSContext *s, ftype input, ftype desired,
71 ftype *delay, ftype *coeffs, ftype *tmp, int *offsetp)
72 {
73 const int order = s->order;
74 const ftype leakage = s->leakage;
75 const ftype mu = s->mu;
76 const ftype a = ONE - leakage;
77 ftype sum, output, e, norm, b;
78 int offset = *offsetp;
79
80 delay[offset + order] = input;
81
82 output = fn(fir_sample)(s, input, delay, coeffs, tmp, offsetp);
83 e = desired - output;
84
85 #if DEPTH == 32
86 sum = s->fdsp->scalarproduct_float(delay, delay, s->kernel_size);
87 #else
88 sum = scalarproduct_double(delay, delay, s->kernel_size);
89 #endif
90 norm = s->eps + sum;
91 b = mu * e / norm;
92 if (s->anlmf)
93 b *= e * e;
94
95 memcpy(tmp, delay + offset, order * sizeof(ftype));
96
97 #if DEPTH == 32
98 s->fdsp->vector_fmul_scalar(coeffs, coeffs, a, s->kernel_size);
99 s->fdsp->vector_fmac_scalar(coeffs, tmp, b, s->kernel_size);
100 #else
101 s->fdsp->vector_dmul_scalar(coeffs, coeffs, a, s->kernel_size);
102 s->fdsp->vector_dmac_scalar(coeffs, tmp, b, s->kernel_size);
103 #endif
104
105 memcpy(coeffs + order, coeffs, order * sizeof(ftype));
106
107 switch (s->output_mode) {
108 case IN_MODE: output = input; break;
109 case DESIRED_MODE: output = desired; break;
110 case OUT_MODE: output = desired - output; break;
111 case NOISE_MODE: output = input - output; break;
112 case ERROR_MODE: break;
113 }
114 return output;
115 }
116
117 static int fn(filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
118 {
119 AudioNLMSContext *s = ctx->priv;
120 AVFrame *out = arg;
121 const int start = (out->ch_layout.nb_channels * jobnr) / nb_jobs;
122 const int end = (out->ch_layout.nb_channels * (jobnr+1)) / nb_jobs;
123
124 for (int c = start; c < end; c++) {
125 const ftype *input = (const ftype *)s->frame[0]->extended_data[c];
126 const ftype *desired = (const ftype *)s->frame[1]->extended_data[c];
127 ftype *delay = (ftype *)s->delay->extended_data[c];
128 ftype *coeffs = (ftype *)s->coeffs->extended_data[c];
129 ftype *tmp = (ftype *)s->tmp->extended_data[c];
130 int *offset = (int *)s->offset->extended_data[c];
131 ftype *output = (ftype *)out->extended_data[c];
132
133 for (int n = 0; n < out->nb_samples; n++) {
134 output[n] = fn(process_sample)(s, input[n], desired[n], delay, coeffs, tmp, offset);
135 if (ctx->is_disabled)
136 output[n] = input[n];
137 }
138 }
139
140 return 0;
141 }
142