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/* |
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* Copyright (c) 2012 Mans Rullgard <mans@mansr.com> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <stdint.h> |
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#include "libavutil/avutil.h" |
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#undef FUNC |
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#undef FSUF |
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#undef sample |
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#undef sample_type |
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#undef OUT |
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#undef S |
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#if SAMPLE_SIZE == 32 |
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# define sample_type int32_t |
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#else |
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# define sample_type int16_t |
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#endif |
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#if PLANAR |
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# define FSUF AV_JOIN(SAMPLE_SIZE, p) |
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# define sample sample_type * |
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# define OUT(n) n |
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# define S(s, c, i) (s[c][i]) |
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#else |
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# define FSUF SAMPLE_SIZE |
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# define sample sample_type |
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# define OUT(n) n[0] |
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# define S(s, c, i) (*s++) |
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#endif |
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#define FUNC(n) AV_JOIN(n ## _, FSUF) |
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static void FUNC(flac_decorrelate_indep_c)(uint8_t **out, int32_t **in, |
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int channels, int len, int shift) |
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{ |
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sample *samples = (sample *) OUT(out); |
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int i, j; |
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✓✓ |
16949320 |
for (j = 0; j < len; j++) |
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✓✓ |
62224892 |
for (i = 0; i < channels; i++) |
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45278160 |
S(samples, i, j) = (int)((unsigned)in[i][j] << shift); |
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} |
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static void FUNC(flac_decorrelate_ls_c)(uint8_t **out, int32_t **in, |
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int channels, int len, int shift) |
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{ |
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sample *samples = (sample *) OUT(out); |
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int i; |
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✓✓ |
4482688 |
for (i = 0; i < len; i++) { |
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4481196 |
unsigned a = in[0][i]; |
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4481196 |
unsigned b = in[1][i]; |
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4481196 |
S(samples, 0, i) = a << shift; |
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4481196 |
S(samples, 1, i) = (a - b) << shift; |
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} |
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} |
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static void FUNC(flac_decorrelate_rs_c)(uint8_t **out, int32_t **in, |
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int channels, int len, int shift) |
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{ |
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sample *samples = (sample *) OUT(out); |
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int i; |
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✓✓ |
3486648 |
for (i = 0; i < len; i++) { |
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3485708 |
unsigned a = in[0][i]; |
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3485708 |
unsigned b = in[1][i]; |
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3485708 |
S(samples, 0, i) = (a + b) << shift; |
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S(samples, 1, i) = b << shift; |
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} |
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} |
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static void FUNC(flac_decorrelate_ms_c)(uint8_t **out, int32_t **in, |
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int channels, int len, int shift) |
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{ |
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sample *samples = (sample *) OUT(out); |
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int i; |
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✓✓ |
4684960 |
for (i = 0; i < len; i++) { |
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4683834 |
unsigned a = in[0][i]; |
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4683834 |
int b = in[1][i]; |
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4683834 |
a -= b >> 1; |
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4683834 |
S(samples, 0, i) = (a + b) << shift; |
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S(samples, 1, i) = a << shift; |
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} |
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} |