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-rw-r--r--libavcodec/fft.h28
1 files changed, 22 insertions, 6 deletions
diff --git a/libavcodec/fft.h b/libavcodec/fft.h
index 7daae24ca3..64f0f6331e 100644
--- a/libavcodec/fft.h
+++ b/libavcodec/fft.h
@@ -2,20 +2,20 @@
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -26,6 +26,10 @@
#define FFT_FLOAT 1
#endif
+#ifndef FFT_FIXED_32
+#define FFT_FIXED_32 0
+#endif
+
#include <stdint.h>
#include "config.h"
#include "libavutil/mem.h"
@@ -40,15 +44,26 @@ typedef float FFTDouble;
#else
+#if FFT_FIXED_32
+
+#define Q31(x) (int)((x)*2147483648.0 + 0.5)
+#define FFT_NAME(x) x ## _fixed_32
+
+typedef int32_t FFTSample;
+
+#else /* FFT_FIXED_32 */
+
#define FFT_NAME(x) x ## _fixed
typedef int16_t FFTSample;
-typedef int FFTDouble;
+
+#endif /* FFT_FIXED_32 */
typedef struct FFTComplex {
- int16_t re, im;
+ FFTSample re, im;
} FFTComplex;
+typedef int FFTDouble;
typedef struct FFTContext FFTContext;
#endif /* FFT_FLOAT */
@@ -142,6 +157,7 @@ int ff_fft_init(FFTContext *s, int nbits, int inverse);
void ff_fft_init_aarch64(FFTContext *s);
void ff_fft_init_x86(FFTContext *s);
void ff_fft_init_arm(FFTContext *s);
+void ff_fft_init_mips(FFTContext *s);
void ff_fft_init_ppc(FFTContext *s);
void ff_fft_fixed_init_arm(FFTContext *s);