FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/flacdsp.c
Date: 2022-12-09 07:38:14
Exec Total Coverage
Lines: 45 57 78.9%
Functions: 3 3 100.0%
Branches: 14 17 82.4%

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 6173 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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19001220 for (i = pred_order; i < len - 1; i += 2, decoded += 2) {
51 18995047 SUINT c = coeffs[0];
52 18995047 SUINT d = decoded[0];
53 18995047 int s0 = 0, s1 = 0;
54
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33128447 for (j = 1; j < pred_order; j++) {
55 14133400 s0 += c*d;
56 14133400 d = decoded[j];
57 14133400 s1 += c*d;
58 14133400 c = coeffs[j];
59 }
60 18995047 s0 += c*d;
61 18995047 d = decoded[j] += (SUINT)(s0 >> qlevel);
62 18995047 s1 += c*d;
63 18995047 decoded[j + 1] += (SUINT)(s1 >> qlevel);
64 }
65
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6173 if (i < len) {
66 5729 int sum = 0;
67
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14986 for (j = 0; j < pred_order; j++)
68 9257 sum += coeffs[j] * (SUINT)decoded[j];
69 5729 decoded[j] = decoded[j] + (unsigned)(sum >> qlevel);
70 }
71 6173 }
72
73 2765 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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15079076 for (i = pred_order; i < len; i++, decoded++) {
79 15076311 int64_t sum = 0;
80
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148066301 for (j = 0; j < pred_order; j++)
81 132989990 sum += (int64_t)coeffs[j] * decoded[j];
82 15076311 decoded[j] += sum >> qlevel;
83 }
84
85 2765 }
86
87 6268 av_cold void ff_flacdsp_init(FLACDSPContext *c, enum AVSampleFormat fmt, int channels)
88 {
89 6268 c->lpc16 = flac_lpc_16_c;
90 6268 c->lpc32 = flac_lpc_32_c;
91
92
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6268 switch (fmt) {
93 797 case AV_SAMPLE_FMT_S32:
94 797 c->decorrelate[0] = flac_decorrelate_indep_c_32;
95 797 c->decorrelate[1] = flac_decorrelate_ls_c_32;
96 797 c->decorrelate[2] = flac_decorrelate_rs_c_32;
97 797 c->decorrelate[3] = flac_decorrelate_ms_c_32;
98 797 break;
99
100 case AV_SAMPLE_FMT_S32P:
101 c->decorrelate[0] = flac_decorrelate_indep_c_32p;
102 c->decorrelate[1] = flac_decorrelate_ls_c_32p;
103 c->decorrelate[2] = flac_decorrelate_rs_c_32p;
104 c->decorrelate[3] = flac_decorrelate_ms_c_32p;
105 break;
106
107 5471 case AV_SAMPLE_FMT_S16:
108 5471 c->decorrelate[0] = flac_decorrelate_indep_c_16;
109 5471 c->decorrelate[1] = flac_decorrelate_ls_c_16;
110 5471 c->decorrelate[2] = flac_decorrelate_rs_c_16;
111 5471 c->decorrelate[3] = flac_decorrelate_ms_c_16;
112 5471 break;
113
114 case AV_SAMPLE_FMT_S16P:
115 c->decorrelate[0] = flac_decorrelate_indep_c_16p;
116 c->decorrelate[1] = flac_decorrelate_ls_c_16p;
117 c->decorrelate[2] = flac_decorrelate_rs_c_16p;
118 c->decorrelate[3] = flac_decorrelate_ms_c_16p;
119 break;
120 }
121
122 #if ARCH_ARM
123 ff_flacdsp_init_arm(c, fmt, channels);
124 #elif ARCH_X86
125 6268 ff_flacdsp_init_x86(c, fmt, channels);
126 #endif
127 6268 }
128