FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/flacdsp.c
Date: 2025-10-24 21:16:34
Exec Total Coverage
Lines: 63 75 84.0%
Functions: 6 6 100.0%
Branches: 22 25 88.0%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2012 Mans Rullgard <mans@mansr.com>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "libavutil/attributes.h"
22 #include "libavutil/internal.h"
23 #include "libavutil/samplefmt.h"
24 #include "flacdsp.h"
25 #include "config.h"
26
27 #define SAMPLE_SIZE 16
28 #define PLANAR 0
29 #include "flacdsp_template.c"
30
31 #undef PLANAR
32 #define PLANAR 1
33 #include "flacdsp_template.c"
34
35 #undef SAMPLE_SIZE
36 #undef PLANAR
37 #define SAMPLE_SIZE 32
38 #define PLANAR 0
39 #include "flacdsp_template.c"
40
41 #undef PLANAR
42 #define PLANAR 1
43 #include "flacdsp_template.c"
44
45 985 static void flac_lpc_16_c(int32_t *decoded, const int coeffs[32],
46 int pred_order, int qlevel, int len)
47 {
48 int i, j;
49
50
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 1988230 for (i = pred_order; i < len - 1; i += 2, decoded += 2) {
51 1987245 SUINT c = coeffs[0];
52 1987245 SUINT d = decoded[0];
53 1987245 int s0 = 0, s1 = 0;
54
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 16150309 for (j = 1; j < pred_order; j++) {
55 14163064 s0 += c*d;
56 14163064 d = decoded[j];
57 14163064 s1 += c*d;
58 14163064 c = coeffs[j];
59 }
60 1987245 s0 += c*d;
61 1987245 d = decoded[j] += (SUINT)(s0 >> qlevel);
62 1987245 s1 += c*d;
63 1987245 decoded[j + 1] += (SUINT)(s1 >> qlevel);
64 }
65
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 985 if (i < len) {
66 535 int sum = 0;
67
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 4718 for (j = 0; j < pred_order; j++)
68 4183 sum += coeffs[j] * (SUINT)decoded[j];
69 535 decoded[j] = decoded[j] + (unsigned)(sum >> qlevel);
70 }
71 985 }
72
73 2817 static void flac_lpc_32_c(int32_t *decoded, const int coeffs[32],
74 int pred_order, int qlevel, int len)
75 {
76 int i, j;
77
78
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 15262047 for (i = pred_order; i < len; i++, decoded++) {
79 15259230 int64_t sum = 0;
80
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 149701791 for (j = 0; j < pred_order; j++)
81 134442561 sum += (int64_t)coeffs[j] * decoded[j];
82 15259230 decoded[j] += sum >> qlevel;
83 }
84
85 2817 }
86
87 10 static void flac_lpc_33_c(int64_t *decoded, const int32_t *residual,
88 const int coeffs[32], int pred_order,
89 int qlevel, int len)
90 {
91 int i, j;
92
93
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 11078 for (i = pred_order; i < len; i++, decoded++) {
94 11068 int64_t sum = 0;
95
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 126168 for (j = 0; j < pred_order; j++)
96 115100 sum += (int64_t)coeffs[j] * (uint64_t)decoded[j];
97 11068 decoded[j] = (uint64_t)residual[i] + (uint64_t)(sum >> qlevel);
98 }
99 10 }
100
101 31 static void flac_wasted_32_c(int32_t *decoded, int wasted, int len)
102 {
103
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 123916 for (int i = 0; i < len; i++)
104 123885 decoded[i] = (unsigned)decoded[i] << wasted;
105 31 }
106
107 9 static void flac_wasted_33_c(int64_t *decoded, const int32_t *residual,
108 int wasted, int len)
109 {
110
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 26478 for (int i = 0; i < len; i++)
111 26469 decoded[i] = (uint64_t)residual[i] << wasted;
112 9 }
113
114 6507 av_cold void ff_flacdsp_init(FLACDSPContext *c, enum AVSampleFormat fmt, int channels)
115 {
116 6507 c->lpc16 = flac_lpc_16_c;
117 6507 c->lpc32 = flac_lpc_32_c;
118 6507 c->lpc33 = flac_lpc_33_c;
119
120 6507 c->wasted32 = flac_wasted_32_c;
121 6507 c->wasted33 = flac_wasted_33_c;
122
123
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 6507 switch (fmt) {
124 817 case AV_SAMPLE_FMT_S32:
125 817 c->decorrelate[0] = flac_decorrelate_indep_c_32;
126 817 c->decorrelate[1] = flac_decorrelate_ls_c_32;
127 817 c->decorrelate[2] = flac_decorrelate_rs_c_32;
128 817 c->decorrelate[3] = flac_decorrelate_ms_c_32;
129 817 break;
130
131 ✗ case AV_SAMPLE_FMT_S32P:
132 ✗ c->decorrelate[0] = flac_decorrelate_indep_c_32p;
133 ✗ c->decorrelate[1] = flac_decorrelate_ls_c_32p;
134 ✗ c->decorrelate[2] = flac_decorrelate_rs_c_32p;
135 ✗ c->decorrelate[3] = flac_decorrelate_ms_c_32p;
136 ✗ break;
137
138 5690 case AV_SAMPLE_FMT_S16:
139 5690 c->decorrelate[0] = flac_decorrelate_indep_c_16;
140 5690 c->decorrelate[1] = flac_decorrelate_ls_c_16;
141 5690 c->decorrelate[2] = flac_decorrelate_rs_c_16;
142 5690 c->decorrelate[3] = flac_decorrelate_ms_c_16;
143 5690 break;
144
145 ✗ case AV_SAMPLE_FMT_S16P:
146 ✗ c->decorrelate[0] = flac_decorrelate_indep_c_16p;
147 ✗ c->decorrelate[1] = flac_decorrelate_ls_c_16p;
148 ✗ c->decorrelate[2] = flac_decorrelate_rs_c_16p;
149 ✗ c->decorrelate[3] = flac_decorrelate_ms_c_16p;
150 ✗ break;
151 }
152
153 #if ARCH_ARM
154 ff_flacdsp_init_arm(c, fmt, channels);
155 #elif ARCH_RISCV
156 ff_flacdsp_init_riscv(c, fmt, channels);
157 #elif ARCH_X86
158 6507 ff_flacdsp_init_x86(c, fmt, channels);
159 #endif
160 6507 }
161