making act segmenter

1 files changed, 60 insertions, 0 deletions

diff --git a/ffmpeg/libavcodec/sinewin.h b/ffmpeg/libavcodec/sinewin.h
new file mode 100644
index 0000000..2268fd5
--- /dev/null
+++ b/ffmpeg/libavcodec/sinewin.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2008 Robert Swain
+ *
+ * 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_SINEWIN_H
+#define AVCODEC_SINEWIN_H
+
+#include "config.h"
+#include "libavutil/mem.h"
+
+#if CONFIG_HARDCODED_TABLES
+#   define SINETABLE_CONST const
+#else
+#   define SINETABLE_CONST
+#endif
+
+#define SINETABLE(size) \
+    SINETABLE_CONST DECLARE_ALIGNED(32, float, ff_sine_##size)[size]
+
+/**
+ * Generate a sine window.
+ * @param   window  pointer to half window
+ * @param   n       size of half window
+ */
+void ff_sine_window_init(float *window, int n);
+
+/**
+ * initialize the specified entry of ff_sine_windows
+ */
+void ff_init_ff_sine_windows(int index);
+
+extern SINETABLE(  32);
+extern SINETABLE(  64);
+extern SINETABLE( 128);
+extern SINETABLE( 256);
+extern SINETABLE( 512);
+extern SINETABLE(1024);
+extern SINETABLE(2048);
+extern SINETABLE(4096);
+extern SINETABLE(8192);
+
+extern SINETABLE_CONST float * const ff_sine_windows[14];
+
+#endif /* AVCODEC_SINEWIN_H */