FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/aap_template.c
Date: 2024-04-19 07:31:02
Exec Total Coverage
Lines: 0 119 0.0%
Functions: 0 9 0.0%
Branches: 0 60 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 ONE
21 #undef ftype
22 #undef SAMPLE_FORMAT
23 #if DEPTH == 32
24 #define SAMPLE_FORMAT float
25 #define ftype float
26 #define ONE 1.f
27 #define ZERO 0.f
28 #else
29 #define SAMPLE_FORMAT double
30 #define ftype double
31 #define ONE 1.0
32 #define ZERO 0.0
33 #endif
34
35 #define fn3(a,b) a##_##b
36 #define fn2(a,b) fn3(a,b)
37 #define fn(a) fn2(a, SAMPLE_FORMAT)
38
39 #if DEPTH == 64
40 static double scalarproduct_double(const double *v1, const double *v2, int len)
41 {
42 double p = 0.0;
43
44 for (int i = 0; i < len; i++)
45 p += v1[i] * v2[i];
46
47 return p;
48 }
49 #endif
50
51 static ftype fn(fir_sample)(AudioAPContext *s, ftype sample, ftype *delay,
52 ftype *coeffs, ftype *tmp, int *offset)
53 {
54 const int order = s->order;
55 ftype output;
56
57 delay[*offset] = sample;
58
59 memcpy(tmp, coeffs + order - *offset, order * sizeof(ftype));
60 #if DEPTH == 32
61 output = s->fdsp->scalarproduct_float(delay, tmp, s->kernel_size);
62 #else
63 output = scalarproduct_double(delay, tmp, s->kernel_size);
64 #endif
65
66 if (--(*offset) < 0)
67 *offset = order - 1;
68
69 return output;
70 }
71
72 static int fn(lup_decompose)(ftype **MA, const int N, const ftype tol, int *P)
73 {
74 for (int i = 0; i <= N; i++)
75 P[i] = i;
76
77 for (int i = 0; i < N; i++) {
78 ftype maxA = ZERO;
79 int imax = i;
80
81 for (int k = i; k < N; k++) {
82 ftype absA = fabs(MA[k][i]);
83 if (absA > maxA) {
84 maxA = absA;
85 imax = k;
86 }
87 }
88
89 if (maxA < tol)
90 return 0;
91
92 if (imax != i) {
93 FFSWAP(int, P[i], P[imax]);
94 FFSWAP(ftype *, MA[i], MA[imax]);
95 P[N]++;
96 }
97
98 for (int j = i + 1; j < N; j++) {
99 MA[j][i] /= MA[i][i];
100
101 for (int k = i + 1; k < N; k++)
102 MA[j][k] -= MA[j][i] * MA[i][k];
103 }
104 }
105
106 return 1;
107 }
108
109 static void fn(lup_invert)(ftype *const *MA, const int *P, const int N, ftype **IA)
110 {
111 for (int j = 0; j < N; j++) {
112 for (int i = 0; i < N; i++) {
113 IA[i][j] = P[i] == j ? ONE : ZERO;
114
115 for (int k = 0; k < i; k++)
116 IA[i][j] -= MA[i][k] * IA[k][j];
117 }
118
119 for (int i = N - 1; i >= 0; i--) {
120 for (int k = i + 1; k < N; k++)
121 IA[i][j] -= MA[i][k] * IA[k][j];
122
123 IA[i][j] /= MA[i][i];
124 }
125 }
126 }
127
128 static ftype fn(process_sample)(AudioAPContext *s, ftype input, ftype desired, int ch)
129 {
130 ftype *dcoeffs = (ftype *)s->dcoeffs->extended_data[ch];
131 ftype *coeffs = (ftype *)s->coeffs->extended_data[ch];
132 ftype *delay = (ftype *)s->delay->extended_data[ch];
133 ftype **itmpmp = (ftype **)&s->itmpmp[s->projection * ch];
134 ftype **tmpmp = (ftype **)&s->tmpmp[s->projection * ch];
135 ftype *tmpm = (ftype *)s->tmpm->extended_data[ch];
136 ftype *tmp = (ftype *)s->tmp->extended_data[ch];
137 ftype *e = (ftype *)s->e->extended_data[ch];
138 ftype *x = (ftype *)s->x->extended_data[ch];
139 ftype *w = (ftype *)s->w->extended_data[ch];
140 int *p = (int *)s->p->extended_data[ch];
141 int *offset = (int *)s->offset->extended_data[ch];
142 const int projection = s->projection;
143 const ftype delta = s->delta;
144 const int order = s->order;
145 const int length = projection + order;
146 const ftype mu = s->mu;
147 const ftype tol = 0.00001f;
148 ftype output;
149
150 x[offset[2] + length] = x[offset[2]] = input;
151 delay[offset[0] + order] = input;
152
153 output = fn(fir_sample)(s, input, delay, coeffs, tmp, offset);
154 e[offset[1]] = e[offset[1] + projection] = desired - output;
155
156 for (int i = 0; i < projection; i++) {
157 const int iprojection = i * projection;
158
159 for (int j = i; j < projection; j++) {
160 ftype sum = ZERO;
161 for (int k = 0; k < order; k++)
162 sum += x[offset[2] + i + k] * x[offset[2] + j + k];
163 tmpm[iprojection + j] = sum;
164 if (i != j)
165 tmpm[j * projection + i] = sum;
166 }
167
168 tmpm[iprojection + i] += delta;
169 }
170
171 fn(lup_decompose)(tmpmp, projection, tol, p);
172 fn(lup_invert)(tmpmp, p, projection, itmpmp);
173
174 for (int i = 0; i < projection; i++) {
175 ftype sum = ZERO;
176 for (int j = 0; j < projection; j++)
177 sum += itmpmp[i][j] * e[j + offset[1]];
178 w[i] = sum;
179 }
180
181 for (int i = 0; i < order; i++) {
182 ftype sum = ZERO;
183 for (int j = 0; j < projection; j++)
184 sum += x[offset[2] + i + j] * w[j];
185 dcoeffs[i] = sum;
186 }
187
188 for (int i = 0; i < order; i++)
189 coeffs[i] = coeffs[i + order] = coeffs[i] + mu * dcoeffs[i];
190
191 if (--offset[1] < 0)
192 offset[1] = projection - 1;
193
194 if (--offset[2] < 0)
195 offset[2] = length - 1;
196
197 switch (s->output_mode) {
198 case IN_MODE: output = input; break;
199 case DESIRED_MODE: output = desired; break;
200 case OUT_MODE: output = desired - output; break;
201 case NOISE_MODE: output = input - output; break;
202 case ERROR_MODE: break;
203 }
204 return output;
205 }
206
207 static int fn(filter_channels)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
208 {
209 AudioAPContext *s = ctx->priv;
210 AVFrame *out = arg;
211 const int start = (out->ch_layout.nb_channels * jobnr) / nb_jobs;
212 const int end = (out->ch_layout.nb_channels * (jobnr+1)) / nb_jobs;
213
214 for (int c = start; c < end; c++) {
215 const ftype *input = (const ftype *)s->frame[0]->extended_data[c];
216 const ftype *desired = (const ftype *)s->frame[1]->extended_data[c];
217 ftype *output = (ftype *)out->extended_data[c];
218
219 for (int n = 0; n < out->nb_samples; n++) {
220 output[n] = fn(process_sample)(s, input[n], desired[n], c);
221 if (ctx->is_disabled)
222 output[n] = input[n];
223 }
224 }
225
226 return 0;
227 }
228