Tizen 2.1 base

1 files changed, 237 insertions, 0 deletions

diff --git a/opencore/codecs_v2/audio/gsm_amr/amr_nb/enc/src/q_gain_p.cpp b/opencore/codecs_v2/audio/gsm_amr/amr_nb/enc/src/q_gain_p.cpp
new file mode 100644
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+++ b/opencore/codecs_v2/audio/gsm_amr/amr_nb/enc/src/q_gain_p.cpp
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+/* ------------------------------------------------------------------
+ * 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: q_gain_p.cpp
+ Functions: q_gain_pitch
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "q_gain_p.h"
+#include "typedef.h"
+#include "oper_32b.h"
+#include "cnst.h"
+#include "basic_op.h"
+
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+    /*----------------------------------------------------------------------------
+    ; MACROS
+    ; Define module specific macros here
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; DEFINES
+    ; Include all pre-processor statements here. Include conditional
+    ; compile variables also.
+    ----------------------------------------------------------------------------*/
+#define NB_QUA_PITCH 16
+
+    /*----------------------------------------------------------------------------
+    ; LOCAL FUNCTION DEFINITIONS
+    ; Function Prototype declaration
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; LOCAL VARIABLE DEFINITIONS
+    ; Variable declaration - defined here and used outside this module
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
+    ; Declare variables used in this module but defined elsewhere
+    ----------------------------------------------------------------------------*/
+
+    /*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: q_gain_pitch
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+    mode -- enum Mode -- AMR mode
+    gp_limit -- Word16 -- pitch gain limit
+    gain -- Pointer to Word16 -- Pitch gain (unquant/quant),              Q14
+
+ Outputs:
+    gain -- Pointer to Word16 -- Pitch gain (unquant/quant),              Q14
+
+    gain_cand -- Array of type Word16 -- pitch gain candidates (3),
+                                         MR795 only, Q14
+
+    gain_cind -- Array of type Word16 -- pitch gain cand. indices (3),
+                                         MR795 only, Q0
+
+    pOverflow -- Pointer to Flag -- overflow indicator
+
+ Returns:
+    Word16 -- index of quantization
+
+ Global Variables Used:
+    qua_gain_pitch
+
+ Local Variables Needed:
+    None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ q_gain_p.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+Word16 q_gain_pitch(    /* Return index of quantization                      */
+    enum Mode mode,     /* i  : AMR mode                                     */
+    Word16 gp_limit,    /* i  : pitch gain limit                             */
+    Word16 *gain,       /* i/o: Pitch gain (unquant/quant),              Q14 */
+    Word16 gain_cand[], /* o  : pitch gain candidates (3),   MR795 only, Q14 */
+    Word16 gain_cind[], /* o  : pitch gain cand. indices (3),MR795 only, Q0  */
+    const Word16* qua_gain_pitch_ptr, /* i : ptr to read-only table          */
+    Flag   *pOverflow
+)
+{
+    Word16 i;
+    Word16 index;
+    Word16 err;
+    Word16 err_min;
+
+    err_min = sub(*gain, qua_gain_pitch_ptr[0], pOverflow);
+    err_min = abs_s(err_min);
+
+    index = 0;
+
+    for (i = 1; i < NB_QUA_PITCH; i++)
+    {
+        if (qua_gain_pitch_ptr[i] <= gp_limit)
+        {
+            err = sub(*gain, qua_gain_pitch_ptr[i], pOverflow);
+            err = abs_s(err);
+
+            if (err < err_min)
+            {
+                err_min = err;
+                index = i;
+            }
+        }
+    }
+
+    if (mode == MR795)
+    {
+        /* in MR795 mode, compute three gain_pit candidates around the index
+         * found in the quantization loop: the index found and the two direct
+         * neighbours, except for the extreme cases (i=0 or i=NB_QUA_PITCH-1),
+         * where the direct neighbour and the neighbour to that is used.
+         */
+        Word16 ii;
+
+        if (index == 0)
+        {
+            ii = index;
+        }
+        else
+        {
+            if (index == (NB_QUA_PITCH - 1) ||
+                    (qua_gain_pitch_ptr[index+1] > gp_limit))
+            {
+                ii = index - 2;
+            }
+            else
+            {
+                ii = index - 1;
+            }
+        }
+
+        /* store candidate indices and values */
+        for (i = 0; i < 3; i++)
+        {
+            gain_cind[i] = ii;
+            gain_cand[i] = qua_gain_pitch_ptr[ii];
+
+            ii += 1;
+        }
+
+        *gain = qua_gain_pitch_ptr[index];
+    }
+    else
+    {
+        /* in MR122 mode, just return the index and gain pitch found.
+         * If bitexactness is required, mask away the two LSBs (because
+         * in the original EFR, gain_pit was scaled Q12)
+         */
+        if (mode == MR122)
+        {
+            /* clear 2 LSBits */
+            *gain = qua_gain_pitch_ptr[index] & 0xFFFC;
+        }
+        else
+        {
+            *gain = qua_gain_pitch_ptr[index];
+        }
+    }
+    return index;
+}