mlpdsp: adding missing file

libavcodec/mlpdsp.h

+/*
+ * MLP codec common header file
+ * Copyright (c) 2007-2008 Ian Caulfield
+ *
+ * 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_MLPDSP_H
+#define AVCODEC_MLPDSP_H
+
+#include <stdint.h>
+
+typedef struct MLPDSPContext {
+    void (*mlp_filter_channel)(int32_t *state, const int32_t *coeff,
+                               int firorder, int iirorder,
+                               unsigned int filter_shift, int32_t mask,
+                               int blocksize, int32_t *sample_buffer);
+} MLPDSPContext;
+
+void ff_mlpdsp_init(MLPDSPContext *c);
+void ff_mlpdsp_init_x86(MLPDSPContext *c);
+
+#endif /* AVCODEC_MLPDSP_H */