Tizen 2.1 base

1 files changed, 132 insertions, 0 deletions

diff --git a/opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/pstfilt.h b/opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/pstfilt.h
new file mode 100644
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+++ b/opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/pstfilt.h
@@ -0,0 +1,132 @@
+/* ------------------------------------------------------------------
+ * 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: pstfilt.h
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+      File             : pstfilt.h
+      Purpose          : Performs adaptive postfiltering on the synthesis
+                       : speech
+
+------------------------------------------------------------------------------
+*/
+
+#ifndef _PSTFILT_H_
+#define _PSTFILT_H_
+#define pstfilt_h "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+#include "mode.h"
+#include "cnst.h"
+#include "preemph.h"
+#include "agc.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 res2[L_SUBFR];
+        Word16 mem_syn_pst[M];
+        preemphasisState preemph_state;
+        agcState agc_state;
+        Word16 synth_buf[M + L_FRAME];
+    } Post_FilterState;
+
+    /*----------------------------------------------------------------------------
+    ; GLOBAL FUNCTION DEFINITIONS
+    ; [List function prototypes here]
+    ----------------------------------------------------------------------------*/
+    Word16 Post_Filter_reset(Post_FilterState *st);
+    /* reset post filter (i.e. set state memory to zero)
+       returns 0 on success
+     */
+
+    void Post_Filter(
+        Post_FilterState *st, /* i/o : post filter states                        */
+        enum Mode mode,       /* i   : AMR mode                                  */
+        Word16 *syn,          /* i/o : synthesis speech (postfiltered is output) */
+        Word16 *Az_4,         /* i   : interpolated LPC parameters in all subfr. */
+        Flag   *pOverflow
+    );
+    /* filters the signal syn using the parameters in Az_4 to calculate filter
+       coefficients.
+       The filter must be set up using Post_Filter_init prior to the first call
+       to Post_Filter. Post_FilterState is updated to mirror the current state
+       of the filter
+
+       return 0 on success
+     */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* _PSTFILT_H_ */
+
+
+