flacdec: split off channel decorrelation as flacdsp

Signed-off-by: Mans Rullgard <mans@mansr.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/libavcodec/flacdsp.h b/libavcodec/flacdsp.h
new file mode 100644
index 0000000000..bb289eea13
--- /dev/null
+++ b/libavcodec/flacdsp.h
@@ -0,0 +1,32 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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,
+ * 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_FLACDSP_H
+#define AVCODEC_FLACDSP_H
+
+#include <stdint.h>
+#include "libavutil/samplefmt.h"
+
+typedef struct FLACDSPContext {
+    void (*decorrelate[4])(uint8_t **out, int32_t **in, int channels,
+                           int len, int shift);
+} FLACDSPContext;
+
+void ff_flacdsp_init(FLACDSPContext *c, enum AVSampleFormat fmt);
+
+#endif /* AVCODEC_FLACDSP_H */