Tizen 2.0 Release2.0_release

1 files changed, 124 insertions, 0 deletions

diff --git a/opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/preemph.h b/opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/preemph.h
new file mode 100644
index 0000000..0798731
--- /dev/null
+++ b/opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/preemph.h
@@ -0,0 +1,124 @@
+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+    3GPP TS 26.073
+    ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+    Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+ Filename: preemph.h
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains all the constant definitions and prototype definitions
+ needed by the file, preemph.c
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef preemph_h
+#define preemph_h "$Id $"
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+    /*----------------------------------------------------------------------------
+    ; MACROS
+    ; Define module specific macros here
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; DEFINES
+    ; Include all pre-processor statements here.
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; EXTERNAL VARIABLES REFERENCES
+    ; Declare variables used in this module but defined elsewhere
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; SIMPLE TYPEDEF'S
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; ENUMERATED TYPEDEF'S
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; STRUCTURES TYPEDEF'S
+    ----------------------------------------------------------------------------*/
+    typedef struct
+    {
+        Word16 mem_pre;          /* filter state */
+    } preemphasisState;
+
+    /*----------------------------------------------------------------------------
+    ; GLOBAL FUNCTION DEFINITIONS
+    ; Function Prototype declaration
+    ----------------------------------------------------------------------------*/
+
+    Word16 preemphasis_reset(preemphasisState *st);
+    /* reset of preemphasis filter (i.e. set state memory to zero)
+       returns 0 on success
+     */
+    void preemphasis_exit(preemphasisState **st);
+    /* de-initialize preemphasis filter (i.e. free status struct)
+       stores NULL in *st
+     */
+
+    void preemphasis(
+        preemphasisState *st, /* (i/o): preemphasis filter state                */
+        Word16 *signal,    /* (i/o): input signal overwritten by the output     */
+        Word16 g,          /* (i)  : preemphasis coefficient                    */
+        Word16 L,          /* (i)  : size of filtering                          */
+        Flag   *pOverflow  /* (o)  : overflow indicator                         */
+    );
+
+    /*----------------------------------------------------------------------------
+    ; END
+    ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* preemph_H_ */
+
+