avfilter/af_aphaser: move wave table generation code into separate file

Signed-off-by: Paul B Mahol <onemda@gmail.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/libavfilter/generate_wave_table.h b/libavfilter/generate_wave_table.h
new file mode 100644
index 0000000000..37ea2aa799
--- /dev/null
+++ b/libavfilter/generate_wave_table.h
@@ -0,0 +1,33 @@
+/*
+ * 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 AVFILTER_GENERATE_WAVE_TABLE_H
+#define AVFILTER_GENERATE_WAVE_TABLE_H
+
+enum WaveType {
+    WAVE_SIN,
+    WAVE_TRI,
+    WAVE_NB,
+};
+
+void ff_generate_wave_table(enum WaveType wave_type,
+                            enum AVSampleFormat sample_fmt,
+                            void *table, int table_size,
+                            double min, double max, double phase);
+
+#endif /* AVFILTER_GENERATE_WAVE_TABLE_H */