FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/arls_template.c
Date: 2024-04-12 08:31:17
Exec Total Coverage
Lines: 0 74 0.0%
Functions: 0 5 0.0%
Branches: 0 26 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 ZERO
20 #undef HALF
21 #undef ONE
22 #undef ftype
23 #undef SAMPLE_FORMAT
24 #if DEPTH == 32
25 #define SAMPLE_FORMAT float
26 #define ftype float
27 #define ONE 1.f
28 #define HALF 0.5f
29 #define ZERO 0.f
30 #else
31 #define SAMPLE_FORMAT double
32 #define ftype double
33 #define ONE 1.0
34 #define HALF 0.5
35 #define ZERO 0.0
36 #endif
37
38 #define fn3(a,b) a##_##b
39 #define fn2(a,b) fn3(a,b)
40 #define fn(a) fn2(a, SAMPLE_FORMAT)
41
42 #if DEPTH == 64
43 static double scalarproduct_double(const double *v1, const double *v2, int len)
44 {
45 double p = 0.0;
46
47 for (int i = 0; i < len; i++)
48 p += v1[i] * v2[i];
49
50 return p;
51 }
52 #endif
53
54 static ftype fn(fir_sample)(AudioRLSContext *s, ftype sample, ftype *delay,
55 ftype *coeffs, ftype *tmp, int *offset)
56 {
57 const int order = s->order;
58 ftype output;
59
60 delay[*offset] = sample;
61
62 memcpy(tmp, coeffs + order - *offset, order * sizeof(ftype));
63
64 #if DEPTH == 32
65 output = s->fdsp->scalarproduct_float(delay, tmp, s->kernel_size);
66 #else
67 output = scalarproduct_double(delay, tmp, s->kernel_size);
68 #endif
69
70 if (--(*offset) < 0)
71 *offset = order - 1;
72
73 return output;
74 }
75
76 static ftype fn(process_sample)(AudioRLSContext *s, ftype input, ftype desired, int ch)
77 {
78 ftype *coeffs = (ftype *)s->coeffs->extended_data[ch];
79 ftype *delay = (ftype *)s->delay->extended_data[ch];
80 ftype *gains = (ftype *)s->gains->extended_data[ch];
81 ftype *tmp = (ftype *)s->tmp->extended_data[ch];
82 ftype *u = (ftype *)s->u->extended_data[ch];
83 ftype *p = (ftype *)s->p->extended_data[ch];
84 ftype *dp = (ftype *)s->dp->extended_data[ch];
85 int *offsetp = (int *)s->offset->extended_data[ch];
86 const int kernel_size = s->kernel_size;
87 const int order = s->order;
88 const ftype lambda = s->lambda;
89 int offset = *offsetp;
90 ftype g = lambda;
91 ftype output, e;
92
93 delay[offset + order] = input;
94
95 output = fn(fir_sample)(s, input, delay, coeffs, tmp, offsetp);
96 e = desired - output;
97
98 for (int i = 0, pos = offset; i < order; i++, pos++) {
99 const int ikernel_size = i * kernel_size;
100
101 u[i] = ZERO;
102 for (int k = 0, pos = offset; k < order; k++, pos++)
103 u[i] += p[ikernel_size + k] * delay[pos];
104
105 g += u[i] * delay[pos];
106 }
107
108 g = ONE / g;
109
110 for (int i = 0; i < order; i++) {
111 const int ikernel_size = i * kernel_size;
112
113 gains[i] = u[i] * g;
114 coeffs[i] = coeffs[order + i] = coeffs[i] + gains[i] * e;
115 tmp[i] = ZERO;
116 for (int k = 0, pos = offset; k < order; k++, pos++)
117 tmp[i] += p[ikernel_size + k] * delay[pos];
118 }
119
120 for (int i = 0; i < order; i++) {
121 const int ikernel_size = i * kernel_size;
122
123 for (int k = 0; k < order; k++)
124 dp[ikernel_size + k] = gains[i] * tmp[k];
125 }
126
127 for (int i = 0; i < order; i++) {
128 const int ikernel_size = i * kernel_size;
129
130 for (int k = 0; k < order; k++)
131 p[ikernel_size + k] = (p[ikernel_size + k] - (dp[ikernel_size + k] + dp[kernel_size * k + i]) * HALF) * lambda;
132 }
133
134 switch (s->output_mode) {
135 case IN_MODE: output = input; break;
136 case DESIRED_MODE: output = desired; break;
137 case OUT_MODE: output = desired - output; break;
138 case NOISE_MODE: output = input - output; break;
139 case ERROR_MODE: break;
140 }
141 return output;
142 }
143
144 static int fn(filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
145 {
146 AudioRLSContext *s = ctx->priv;
147 AVFrame *out = arg;
148 const int start = (out->ch_layout.nb_channels * jobnr) / nb_jobs;
149 const int end = (out->ch_layout.nb_channels * (jobnr+1)) / nb_jobs;
150
151 for (int c = start; c < end; c++) {
152 const ftype *input = (const ftype *)s->frame[0]->extended_data[c];
153 const ftype *desired = (const ftype *)s->frame[1]->extended_data[c];
154 ftype *output = (ftype *)out->extended_data[c];
155
156 for (int n = 0; n < out->nb_samples; n++) {
157 output[n] = fn(process_sample)(s, input[n], desired[n], c);
158 if (ctx->is_disabled)
159 output[n] = input[n];
160 }
161 }
162
163 return 0;
164 }
165