FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/anlms_template.c
Date: 2024-07-24 19:24:46
Exec Total Coverage
Lines: 0 55 0.0%
Functions: 0 4 0.0%
Branches: 0 10 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 static ftype fn(fir_sample)(AudioNLMSContext *s, ftype sample, ftype *delay,
37 ftype *coeffs, ftype *tmp, int *offset)
38 {
39 const int order = s->order;
40 ftype output;
41
42 delay[*offset] = sample;
43
44 memcpy(tmp, coeffs + order - *offset, order * sizeof(ftype));
45
46 #if DEPTH == 32
47 output = s->fdsp->scalarproduct_float(delay, tmp, s->kernel_size);
48 #else
49 output = s->fdsp->scalarproduct_double(delay, tmp, s->kernel_size);
50 #endif
51
52 if (--(*offset) < 0)
53 *offset = order - 1;
54
55 return output;
56 }
57
58 static ftype fn(process_sample)(AudioNLMSContext *s, ftype input, ftype desired,
59 ftype *delay, ftype *coeffs, ftype *tmp, int *offsetp)
60 {
61 const int order = s->order;
62 const ftype leakage = s->leakage;
63 const ftype mu = s->mu;
64 const ftype a = ONE - leakage;
65 ftype sum, output, e, norm, b;
66 int offset = *offsetp;
67
68 delay[offset + order] = input;
69
70 output = fn(fir_sample)(s, input, delay, coeffs, tmp, offsetp);
71 e = desired - output;
72
73 #if DEPTH == 32
74 sum = s->fdsp->scalarproduct_float(delay, delay, s->kernel_size);
75 #else
76 sum = s->fdsp->scalarproduct_double(delay, delay, s->kernel_size);
77 #endif
78 norm = s->eps + sum;
79 b = mu * e / norm;
80 if (s->anlmf)
81 b *= e * e;
82
83 memcpy(tmp, delay + offset, order * sizeof(ftype));
84
85 #if DEPTH == 32
86 s->fdsp->vector_fmul_scalar(coeffs, coeffs, a, s->kernel_size);
87 s->fdsp->vector_fmac_scalar(coeffs, tmp, b, s->kernel_size);
88 #else
89 s->fdsp->vector_dmul_scalar(coeffs, coeffs, a, s->kernel_size);
90 s->fdsp->vector_dmac_scalar(coeffs, tmp, b, s->kernel_size);
91 #endif
92
93 memcpy(coeffs + order, coeffs, order * sizeof(ftype));
94
95 switch (s->output_mode) {
96 case IN_MODE: output = input; break;
97 case DESIRED_MODE: output = desired; break;
98 case OUT_MODE: output = desired - output; break;
99 case NOISE_MODE: output = input - output; break;
100 case ERROR_MODE: break;
101 }
102 return output;
103 }
104
105 static int fn(filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
106 {
107 AudioNLMSContext *s = ctx->priv;
108 AVFrame *out = arg;
109 const int start = (out->ch_layout.nb_channels * jobnr) / nb_jobs;
110 const int end = (out->ch_layout.nb_channels * (jobnr+1)) / nb_jobs;
111
112 for (int c = start; c < end; c++) {
113 const ftype *input = (const ftype *)s->frame[0]->extended_data[c];
114 const ftype *desired = (const ftype *)s->frame[1]->extended_data[c];
115 ftype *delay = (ftype *)s->delay->extended_data[c];
116 ftype *coeffs = (ftype *)s->coeffs->extended_data[c];
117 ftype *tmp = (ftype *)s->tmp->extended_data[c];
118 int *offset = (int *)s->offset->extended_data[c];
119 ftype *output = (ftype *)out->extended_data[c];
120
121 for (int n = 0; n < out->nb_samples; n++) {
122 output[n] = fn(process_sample)(s, input[n], desired[n], delay, coeffs, tmp, offset);
123 if (ctx->is_disabled)
124 output[n] = input[n];
125 }
126 }
127
128 return 0;
129 }
130