FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/flacdsp.c
Date: 2022-07-04 00:18:54
Exec Total Coverage
Lines: 47 59 79.7%
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 #include "flacdsp_lpc_template.c"
31
32 #undef PLANAR
33 #define PLANAR 1
34 #include "flacdsp_template.c"
35
36 #undef SAMPLE_SIZE
37 #undef PLANAR
38 #define SAMPLE_SIZE 32
39 #define PLANAR 0
40 #include "flacdsp_template.c"
41 #include "flacdsp_lpc_template.c"
42
43 #undef PLANAR
44 #define PLANAR 1
45 #include "flacdsp_template.c"
46
47 6171 static void flac_lpc_16_c(int32_t *decoded, const int coeffs[32],
48 int pred_order, int qlevel, int len)
49 {
50 int i, j;
51
52
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18997124 for (i = pred_order; i < len - 1; i += 2, decoded += 2) {
53 18990953 SUINT c = coeffs[0];
54 18990953 SUINT d = decoded[0];
55 18990953 int s0 = 0, s1 = 0;
56
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33122306 for (j = 1; j < pred_order; j++) {
57 14131353 s0 += c*d;
58 14131353 d = decoded[j];
59 14131353 s1 += c*d;
60 14131353 c = coeffs[j];
61 }
62 18990953 s0 += c*d;
63 18990953 d = decoded[j] += (SUINT)(s0 >> qlevel);
64 18990953 s1 += c*d;
65 18990953 decoded[j + 1] += (SUINT)(s1 >> qlevel);
66 }
67
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6171 if (i < len) {
68 5728 int sum = 0;
69
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14984 for (j = 0; j < pred_order; j++)
70 9256 sum += coeffs[j] * (SUINT)decoded[j];
71 5728 decoded[j] = decoded[j] + (unsigned)(sum >> qlevel);
72 }
73 6171 }
74
75 2179 static void flac_lpc_32_c(int32_t *decoded, const int coeffs[32],
76 int pred_order, int qlevel, int len)
77 {
78 int i, j;
79
80
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12386591 for (i = pred_order; i < len; i++, decoded++) {
81 12384412 int64_t sum = 0;
82
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120975285 for (j = 0; j < pred_order; j++)
83 108590873 sum += (int64_t)coeffs[j] * decoded[j];
84 12384412 decoded[j] += sum >> qlevel;
85 }
86
87 2179 }
88
89 5990 av_cold void ff_flacdsp_init(FLACDSPContext *c, enum AVSampleFormat fmt, int channels,
90 int bps)
91 {
92 5990 c->lpc16 = flac_lpc_16_c;
93 5990 c->lpc32 = flac_lpc_32_c;
94 5990 c->lpc16_encode = flac_lpc_encode_c_16;
95 5990 c->lpc32_encode = flac_lpc_encode_c_32;
96
97
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5990 switch (fmt) {
98 503 case AV_SAMPLE_FMT_S32:
99 503 c->decorrelate[0] = flac_decorrelate_indep_c_32;
100 503 c->decorrelate[1] = flac_decorrelate_ls_c_32;
101 503 c->decorrelate[2] = flac_decorrelate_rs_c_32;
102 503 c->decorrelate[3] = flac_decorrelate_ms_c_32;
103 503 break;
104
105 case AV_SAMPLE_FMT_S32P:
106 c->decorrelate[0] = flac_decorrelate_indep_c_32p;
107 c->decorrelate[1] = flac_decorrelate_ls_c_32p;
108 c->decorrelate[2] = flac_decorrelate_rs_c_32p;
109 c->decorrelate[3] = flac_decorrelate_ms_c_32p;
110 break;
111
112 5487 case AV_SAMPLE_FMT_S16:
113 5487 c->decorrelate[0] = flac_decorrelate_indep_c_16;
114 5487 c->decorrelate[1] = flac_decorrelate_ls_c_16;
115 5487 c->decorrelate[2] = flac_decorrelate_rs_c_16;
116 5487 c->decorrelate[3] = flac_decorrelate_ms_c_16;
117 5487 break;
118
119 case AV_SAMPLE_FMT_S16P:
120 c->decorrelate[0] = flac_decorrelate_indep_c_16p;
121 c->decorrelate[1] = flac_decorrelate_ls_c_16p;
122 c->decorrelate[2] = flac_decorrelate_rs_c_16p;
123 c->decorrelate[3] = flac_decorrelate_ms_c_16p;
124 break;
125 }
126
127 #if ARCH_ARM
128 ff_flacdsp_init_arm(c, fmt, channels, bps);
129 #elif ARCH_X86
130 5990 ff_flacdsp_init_x86(c, fmt, channels, bps);
131 #endif
132 5990 }
133