| 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 <stdint.h> | ||
| 22 | #include "libavutil/macros.h" | ||
| 23 | |||
| 24 | #undef FUNC | ||
| 25 | #undef FSUF | ||
| 26 | #undef sample | ||
| 27 | #undef sample_type | ||
| 28 | #undef OUT | ||
| 29 | #undef S | ||
| 30 | |||
| 31 | #if SAMPLE_SIZE == 32 | ||
| 32 | # define sample_type int32_t | ||
| 33 | #else | ||
| 34 | # define sample_type int16_t | ||
| 35 | #endif | ||
| 36 | |||
| 37 | #if PLANAR | ||
| 38 | # define FSUF AV_JOIN(SAMPLE_SIZE, p) | ||
| 39 | # define sample sample_type * | ||
| 40 | # define OUT(n) n | ||
| 41 | # define S(s, c, i) (s[c][i]) | ||
| 42 | #else | ||
| 43 | # define FSUF SAMPLE_SIZE | ||
| 44 | # define sample sample_type | ||
| 45 | # define OUT(n) n[0] | ||
| 46 | # define S(s, c, i) (*s++) | ||
| 47 | #endif | ||
| 48 | |||
| 49 | #define FUNC(n) AV_JOIN(n ## _, FSUF) | ||
| 50 | |||
| 51 | 2672 | static void FUNC(flac_decorrelate_indep_c)(uint8_t **out, int32_t **in, | |
| 52 | int channels, int len, int shift) | ||
| 53 | { | ||
| 54 | 2672 | sample *samples = (sample *) OUT(out); | |
| 55 | int i, j; | ||
| 56 | |||
| 57 |
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17369702 | for (j = 0; j < len; j++) |
| 58 |
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63752026 | for (i = 0; i < channels; i++) |
| 59 | 46384996 | S(samples, i, j) = (int)((unsigned)in[i][j] << shift); | |
| 60 | 2672 | } | |
| 61 | |||
| 62 | 1610 | static void FUNC(flac_decorrelate_ls_c)(uint8_t **out, int32_t **in, | |
| 63 | int channels, int len, int shift) | ||
| 64 | { | ||
| 65 | 1610 | sample *samples = (sample *) OUT(out); | |
| 66 | int i; | ||
| 67 | |||
| 68 |
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5026550 | for (i = 0; i < len; i++) { |
| 69 | 5024940 | unsigned a = in[0][i]; | |
| 70 | 5024940 | unsigned b = in[1][i]; | |
| 71 | 5024940 | S(samples, 0, i) = a << shift; | |
| 72 | 5024940 | S(samples, 1, i) = (a - b) << shift; | |
| 73 | } | ||
| 74 | 1610 | } | |
| 75 | |||
| 76 | 1110 | static void FUNC(flac_decorrelate_rs_c)(uint8_t **out, int32_t **in, | |
| 77 | int channels, int len, int shift) | ||
| 78 | { | ||
| 79 | 1110 | sample *samples = (sample *) OUT(out); | |
| 80 | int i; | ||
| 81 | |||
| 82 |
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4270178 | for (i = 0; i < len; i++) { |
| 83 | 4269068 | unsigned a = in[0][i]; | |
| 84 | 4269068 | unsigned b = in[1][i]; | |
| 85 | 4269068 | S(samples, 0, i) = (a + b) << shift; | |
| 86 | 4269068 | S(samples, 1, i) = b << shift; | |
| 87 | } | ||
| 88 | 1110 | } | |
| 89 | |||
| 90 | 1472 | static void FUNC(flac_decorrelate_ms_c)(uint8_t **out, int32_t **in, | |
| 91 | int channels, int len, int shift) | ||
| 92 | { | ||
| 93 | 1472 | sample *samples = (sample *) OUT(out); | |
| 94 | int i; | ||
| 95 | |||
| 96 |
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6220486 | for (i = 0; i < len; i++) { |
| 97 | 6219014 | unsigned a = in[0][i]; | |
| 98 | 6219014 | int b = in[1][i]; | |
| 99 | 6219014 | a -= b >> 1; | |
| 100 | 6219014 | S(samples, 0, i) = (a + b) << shift; | |
| 101 | 6219014 | S(samples, 1, i) = a << shift; | |
| 102 | } | ||
| 103 | 1472 | } | |
| 104 |