/* * Copyright (c) 2012 Mans Rullgard <mans@mansr.com> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdint.h> #include"libavutil/macros.h"
#undef FUNC #undef FSUF #undef sample #undef sample_type #undef OUT #undef S
staticvoid FUNC(flac_decorrelate_indep_c)(uint8_t **out, int32_t **in, int channels, int len, int shift)
{
sample *samples = (sample *) OUT(out); int i, j;
for (j = 0; j < len; j++) for (i = 0; i < channels; i++)
S(samples, i, j) = (int)((unsigned)in[i][j] << shift);
}
staticvoid FUNC(flac_decorrelate_ls_c)(uint8_t **out, int32_t **in, int channels, int len, int shift)
{
sample *samples = (sample *) OUT(out); int i;
for (i = 0; i < len; i++) { unsigned a = in[0][i]; unsigned b = in[1][i];
S(samples, 0, i) = a << shift;
S(samples, 1, i) = (a - b) << shift;
}
}
staticvoid FUNC(flac_decorrelate_rs_c)(uint8_t **out, int32_t **in, int channels, int len, int shift)
{
sample *samples = (sample *) OUT(out); int i;
for (i = 0; i < len; i++) { unsigned a = in[0][i]; unsigned b = in[1][i];
S(samples, 0, i) = (a + b) << shift;
S(samples, 1, i) = b << shift;
}
}
staticvoid FUNC(flac_decorrelate_ms_c)(uint8_t **out, int32_t **in, int channels, int len, int shift)
{
sample *samples = (sample *) OUT(out); int i;
for (i = 0; i < len; i++) { unsigned a = in[0][i]; int b = in[1][i];
a -= b >> 1;
S(samples, 0, i) = (a + b) << shift;
S(samples, 1, i) = a << shift;
}
}
Messung V0.5
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