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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /media/ffvpx/libavcodec/fft-internal.h
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--media/ffvpx/libavcodec/fft-internal.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/fft-internal.h b/media/ffvpx/libavcodec/fft-internal.h
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+++ b/media/ffvpx/libavcodec/fft-internal.h
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+/*
+ * 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
+ */
+
+#ifndef AVCODEC_FFT_INTERNAL_H
+#define AVCODEC_FFT_INTERNAL_H
+
+#include "libavutil/mathematics.h"
+#include "fft.h"
+
+#if FFT_FLOAT
+
+#define FIX15(v) (v)
+#define sqrthalf (float)M_SQRT1_2
+
+#define BF(x, y, a, b) do { \
+ x = a - b; \
+ y = a + b; \
+ } while (0)
+
+#define CMUL(dre, dim, are, aim, bre, bim) do { \
+ (dre) = (are) * (bre) - (aim) * (bim); \
+ (dim) = (are) * (bim) + (aim) * (bre); \
+ } while (0)
+
+#else /* FFT_FLOAT */
+
+#define CMUL(dre, dim, are, aim, bre, bim) do { \
+ int64_t accu; \
+ (accu) = (int64_t)(bre) * (are); \
+ (accu) -= (int64_t)(bim) * (aim); \
+ (dre) = (int)(((accu) + 0x40000000) >> 31); \
+ (accu) = (int64_t)(bre) * (aim); \
+ (accu) += (int64_t)(bim) * (are); \
+ (dim) = (int)(((accu) + 0x40000000) >> 31); \
+ } while (0)
+
+#endif /* FFT_FLOAT */
+
+#define ff_imdct_calc_c FFT_NAME(ff_imdct_calc_c)
+#define ff_imdct_half_c FFT_NAME(ff_imdct_half_c)
+#define ff_mdct_calc_c FFT_NAME(ff_mdct_calc_c)
+
+void ff_imdct_calc_c(FFTContext *s, FFTSample *output, const FFTSample *input);
+void ff_imdct_half_c(FFTContext *s, FFTSample *output, const FFTSample *input);
+void ff_mdct_calc_c(FFTContext *s, FFTSample *output, const FFTSample *input);
+
+#endif /* AVCODEC_FFT_INTERNAL_H */