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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 | 6181 | 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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19002160 | for (i = pred_order; i < len - 1; i += 2, decoded += 2) { |
51 | 18995979 | SUINT c = coeffs[0]; | |
52 | 18995979 | SUINT d = decoded[0]; | |
53 | 18995979 | int s0 = 0, s1 = 0; | |
54 |
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33149155 | for (j = 1; j < pred_order; j++) { |
55 | 14153176 | s0 += c*d; | |
56 | 14153176 | d = decoded[j]; | |
57 | 14153176 | s1 += c*d; | |
58 | 14153176 | c = coeffs[j]; | |
59 | } | ||
60 | 18995979 | s0 += c*d; | |
61 | 18995979 | d = decoded[j] += (SUINT)(s0 >> qlevel); | |
62 | 18995979 | s1 += c*d; | |
63 | 18995979 | decoded[j + 1] += (SUINT)(s1 >> qlevel); | |
64 | } | ||
65 |
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6181 | if (i < len) { |
66 | 5733 | int sum = 0; | |
67 |
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15074 | for (j = 0; j < pred_order; j++) |
68 | 9341 | sum += coeffs[j] * (SUINT)decoded[j]; | |
69 | 5733 | decoded[j] = decoded[j] + (unsigned)(sum >> qlevel); | |
70 | } | ||
71 | 6181 | } | |
72 | |||
73 | 2792 | 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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15147022 | for (i = pred_order; i < len; i++, decoded++) { |
79 | 15144230 | int64_t sum = 0; | |
80 |
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148666791 | for (j = 0; j < pred_order; j++) |
81 | 133522561 | sum += (int64_t)coeffs[j] * decoded[j]; | |
82 | 15144230 | decoded[j] += sum >> qlevel; | |
83 | } | ||
84 | |||
85 | 2792 | } | |
86 | |||
87 | 6281 | av_cold void ff_flacdsp_init(FLACDSPContext *c, enum AVSampleFormat fmt, int channels) | |
88 | { | ||
89 | 6281 | c->lpc16 = flac_lpc_16_c; | |
90 | 6281 | c->lpc32 = flac_lpc_32_c; | |
91 | |||
92 |
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6281 | switch (fmt) { |
93 | 810 | case AV_SAMPLE_FMT_S32: | |
94 | 810 | c->decorrelate[0] = flac_decorrelate_indep_c_32; | |
95 | 810 | c->decorrelate[1] = flac_decorrelate_ls_c_32; | |
96 | 810 | c->decorrelate[2] = flac_decorrelate_rs_c_32; | |
97 | 810 | c->decorrelate[3] = flac_decorrelate_ms_c_32; | |
98 | 810 | 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_RISCV | ||
125 | ff_flacdsp_init_riscv(c, fmt, channels); | ||
126 | #elif ARCH_X86 | ||
127 | 6281 | ff_flacdsp_init_x86(c, fmt, channels); | |
128 | #endif | ||
129 | 6281 | } | |
130 |