FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/takdsp.c
Date: 2024-04-19 07:31:02
Exec Total Coverage
Lines: 34 34 100.0%
Functions: 5 5 100.0%
Branches: 8 8 100.0%

Line Branch Exec Source
1 /*
2 * TAK decoder
3 * Copyright (c) 2015 Paul B Mahol
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "libavutil/attributes.h"
23 #include "takdsp.h"
24 #include "config.h"
25
26 4 static void decorrelate_ls(const int32_t *p1, int32_t *p2, int length)
27 {
28 int i;
29
30
2/2
✓ Branch 0 taken 14097 times.
✓ Branch 1 taken 4 times.
14101 for (i = 0; i < length; i++) {
31 14097 uint32_t a = p1[i];
32 14097 uint32_t b = p2[i];
33 14097 p2[i] = a + b;
34 }
35 4 }
36
37 3 static void decorrelate_sr(int32_t *p1, const int32_t *p2, int length)
38 {
39 int i;
40
41
2/2
✓ Branch 0 taken 3072 times.
✓ Branch 1 taken 3 times.
3075 for (i = 0; i < length; i++) {
42 3072 uint32_t a = p1[i];
43 3072 uint32_t b = p2[i];
44 3072 p1[i] = b - a;
45 }
46 3 }
47
48 5 static void decorrelate_sm(int32_t *p1, int32_t *p2, int length)
49 {
50 int i;
51
52
2/2
✓ Branch 0 taken 25122 times.
✓ Branch 1 taken 5 times.
25127 for (i = 0; i < length; i++) {
53 25122 uint32_t a = p1[i];
54 25122 int32_t b = p2[i];
55 25122 a -= b >> 1;
56 25122 p1[i] = a;
57 25122 p2[i] = a + b;
58 }
59 5 }
60
61 9 static void decorrelate_sf(int32_t *p1, const int32_t *p2, int length, int dshift, int dfactor)
62 {
63 int i;
64
65
2/2
✓ Branch 0 taken 69222 times.
✓ Branch 1 taken 9 times.
69231 for (i = 0; i < length; i++) {
66 69222 uint32_t a = p1[i];
67 69222 int32_t b = p2[i];
68 69222 b = (unsigned)((int)(dfactor * (unsigned)(b >> dshift) + 128) >> 8) << dshift;
69 69222 p1[i] = b - a;
70 }
71 9 }
72
73 15 av_cold void ff_takdsp_init(TAKDSPContext *c)
74 {
75 15 c->decorrelate_ls = decorrelate_ls;
76 15 c->decorrelate_sr = decorrelate_sr;
77 15 c->decorrelate_sm = decorrelate_sm;
78 15 c->decorrelate_sf = decorrelate_sf;
79
80 #if ARCH_RISCV
81 ff_takdsp_init_riscv(c);
82 #elif ARCH_X86
83 15 ff_takdsp_init_x86(c);
84 #endif
85 15 }
86