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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /media/ffvpx/libavcodec/flacdsp_template.c | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | media/ffvpx/libavcodec/flacdsp_template.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/flacdsp_template.c b/media/ffvpx/libavcodec/flacdsp_template.c new file mode 100644 index 0000000000..0a6fe59e28 --- /dev/null +++ b/media/ffvpx/libavcodec/flacdsp_template.c @@ -0,0 +1,103 @@ +/* + * 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 + +#if SAMPLE_SIZE == 32 +# define sample_type int32_t +#else +# define sample_type int16_t +#endif + +#if PLANAR +# define FSUF AV_JOIN(SAMPLE_SIZE, p) +# define sample sample_type * +# define OUT(n) n +# define S(s, c, i) (s[c][i]) +#else +# define FSUF SAMPLE_SIZE +# define sample sample_type +# define OUT(n) n[0] +# define S(s, c, i) (*s++) +#endif + +#define FUNC(n) AV_JOIN(n ## _, FSUF) + +static void 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); +} + +static void 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; + } +} + +static void 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; + } +} + +static void 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; + } +} |