summaryrefslogtreecommitdiffstats
path: root/media/libstagefright/codecs/amrnb/enc/src/spstproc.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'media/libstagefright/codecs/amrnb/enc/src/spstproc.cpp')
-rw-r--r--media/libstagefright/codecs/amrnb/enc/src/spstproc.cpp314
1 files changed, 0 insertions, 314 deletions
diff --git a/media/libstagefright/codecs/amrnb/enc/src/spstproc.cpp b/media/libstagefright/codecs/amrnb/enc/src/spstproc.cpp
deleted file mode 100644
index b9574aa..0000000
--- a/media/libstagefright/codecs/amrnb/enc/src/spstproc.cpp
+++ /dev/null
@@ -1,314 +0,0 @@
-/* ------------------------------------------------------------------
- * 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.
-****************************************************************************************/
-/*
-------------------------------------------------------------------------------
-
-
-
- Pathname: ./audio/gsm-amr/c/src/spstproc.c
- Functions: subframePostProc
-
- Date: 02/06/2002
-
-------------------------------------------------------------------------------
- REVISION HISTORY
-
- Description: Updated template used to PV coding template.
- Changed to accept the pOverflow flag for EPOC compatibility.
-
- Description:
- 1. Eliminated unused include files.
- 2. Replaced array addressing by pointers
- 3. Eliminated math operations that unnecessary checked for
- saturation
- 4. Replaced loop counter with decrement loops
-
- Description: Added casting to eliminate warnings
-
- Description: Replaced "int" and/or "char" with OSCL defined types.
-
- Description:
-
-------------------------------------------------------------------------------
- MODULE DESCRIPTION
-
- Subframe post processing
-------------------------------------------------------------------------------
-*/
-
-/*----------------------------------------------------------------------------
-; INCLUDES
-----------------------------------------------------------------------------*/
-#include "spstproc.h"
-#include "syn_filt.h"
-#include "cnst.h"
-
-/*----------------------------------------------------------------------------
-; MACROS
-; Define module specific macros here
-----------------------------------------------------------------------------*/
-
-/*----------------------------------------------------------------------------
-; DEFINES
-; Include all pre-processor statements here. Include conditional
-; compile variables also.
-----------------------------------------------------------------------------*/
-
-/*----------------------------------------------------------------------------
-; LOCAL FUNCTION DEFINITIONS
-; Function Prototype declaration
-----------------------------------------------------------------------------*/
-
-/*----------------------------------------------------------------------------
-; LOCAL VARIABLE DEFINITIONS
-; Variable declaration - defined here and used outside this module
-----------------------------------------------------------------------------*/
-
-/*
-------------------------------------------------------------------------------
- FUNCTION NAME: subframePostProc
-------------------------------------------------------------------------------
- INPUT AND OUTPUT DEFINITIONS
-
-
- Inputs:
- speech -- Pointer to Word16 -- speech segment
- mode -- enum Mode -- coder mode
- i_subfr -- Word16 -- Subframe nr
- gain_pit -- Word16 -- Pitch gain Q14
- gain_code -- Word16 -- Decoded innovation gain
- Aq -- Pointer to Word16 -- A(z) quantized for the 4 subframes
- synth -- Word16 Array -- Local synthesis
- xn -- Word16 Array -- Target vector for pitch search
- code -- Word16 Array -- Fixed codebook exitation
- y1 -- Word16 Array -- Filtered adaptive exitation
- y2 -- Word16 Array -- Filtered fixed codebook excitation
- mem_syn -- Pointer to Word16 -- memory of synthesis filter
-
- Outputs:
- mem_syn -- Pointer to Word16 -- memory of synthesis filter
- mem_err -- Pointer to Word16 -- pointer to error signal
- mem_w0 -- Pointer to Word16 -- memory of weighting filter
- exc -- Pointer to Word16 -- long term prediction residual
- sharp -- Pointer to Word16 -- pitch sharpening value
- pOverflow -- Pointer to Flag -- overflow indicator
-
- Returns:
- None
-
- Global Variables Used:
- None
-
- Local Variables Needed:
- None
-
-------------------------------------------------------------------------------
- FUNCTION DESCRIPTION
-
-
-------------------------------------------------------------------------------
- REQUIREMENTS
-
- None
-
-------------------------------------------------------------------------------
- REFERENCES
-
- spstproc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
-
-------------------------------------------------------------------------------
- PSEUDO-CODE
-
-
-------------------------------------------------------------------------------
- RESOURCES USED [optional]
-
- When the code is written for a specific target processor the
- the resources used should be documented below.
-
- HEAP MEMORY USED: x bytes
-
- STACK MEMORY USED: x bytes
-
- CLOCK CYCLES: (cycle count equation for this function) + (variable
- used to represent cycle count for each subroutine
- called)
- where: (cycle count variable) = cycle count for [subroutine
- name]
-
-------------------------------------------------------------------------------
- CAUTION [optional]
- [State any special notes, constraints or cautions for users of this function]
-
-------------------------------------------------------------------------------
-*/
-
-void subframePostProc(
- Word16 *speech, /* i : speech segment */
- enum Mode mode, /* i : coder mode */
- Word16 i_subfr, /* i : Subframe nr */
- Word16 gain_pit, /* i : Pitch gain Q14 */
- Word16 gain_code, /* i : Decoded innovation gain */
- Word16 *Aq, /* i : A(z) quantized for the 4 subframes */
- Word16 synth[], /* i : Local snthesis */
- Word16 xn[], /* i : Target vector for pitch search */
- Word16 code[], /* i : Fixed codebook exitation */
- Word16 y1[], /* i : Filtered adaptive exitation */
- Word16 y2[], /* i : Filtered fixed codebook excitation */
- Word16 *mem_syn, /* i/o : memory of synthesis filter */
- Word16 *mem_err, /* o : pointer to error signal */
- Word16 *mem_w0, /* o : memory of weighting filter */
- Word16 *exc, /* o : long term prediction residual */
- Word16 *sharp, /* o : pitch sharpening value */
- Flag *pOverflow /* o : overflow indicator */
-)
-{
- Word16 i;
- Word16 j;
- Word16 temp;
- Word32 L_temp;
- Word32 L_temp2;
- Word16 tempShift;
- Word16 kShift;
- Word16 pitch_fac;
- Word16 *p_exc;
- Word16 *p_code;
-
- OSCL_UNUSED_ARG(pOverflow);
-
- if (mode != MR122)
- {
- tempShift = 1;
- kShift = 16 - 2 - 1;
- pitch_fac = gain_pit;
- }
- else
- {
- tempShift = 2;
- kShift = 16 - 4 - 1;
- pitch_fac = gain_pit >> 1;
- }
-
- /*------------------------------------------------------------*
- * - Update pitch sharpening "sharp" with quantized gain_pit *
- *------------------------------------------------------------*/
-
- if (gain_pit < SHARPMAX)
- {
- *sharp = gain_pit;
- }
- else
- {
- *sharp = SHARPMAX;
- }
-
- /*------------------------------------------------------*
- * - Find the total excitation *
- * - find synthesis speech corresponding to exc[] *
- * - update filters memories for finding the target *
- * vector in the next subframe *
- * (update error[-m..-1] and mem_w_err[]) *
- *------------------------------------------------------*/
-
- p_exc = &exc[ i_subfr];
- p_code = &code[0];
-
- for (i = L_SUBFR >> 1; i != 0 ; i--)
- {
- /* exc[i] = gain_pit*exc[i] + gain_code*code[i]; */
-
- /*
- * 12k2 others
- * ---------------------------------
- * exc Q0 Q0
- * gain_pit Q14 Q14
- * pitch_fac Q13 Q14
- * product: Q14 Q15
- *
- * code Q12 Q13
- * gain_code Q1 Q1
- * product Q14 Q15
- * sum Q14 Q15
- *
- * tempShift 2 1
- * sum<<tempShift Q16 Q16
- * result -> exc Q0 Q0
- */
- L_temp = ((Word32) * (p_exc++) * pitch_fac) << 1;
- L_temp2 = ((Word32) * (p_exc--) * pitch_fac) << 1;
- L_temp += ((Word32) * (p_code++) * gain_code) << 1;
- L_temp2 += ((Word32) * (p_code++) * gain_code) << 1;
- L_temp <<= tempShift;
- L_temp2 <<= tempShift;
- *(p_exc++) = (Word16)((L_temp + 0x08000L) >> 16);
- *(p_exc++) = (Word16)((L_temp2 + 0x08000L) >> 16);
-
- }
-
- Syn_filt(
- Aq,
- &exc[i_subfr],
- &synth[i_subfr],
- L_SUBFR,
- mem_syn,
- 1);
-
- for (i = L_SUBFR - M, j = 0; i < L_SUBFR; i++, j++)
- {
- mem_err[j] = speech[i_subfr + i] - synth[i_subfr + i];
-
- /*
- * 12k2 others
- * ---------------------------------
- * y1 Q0 Q0
- * gain_pit Q14 Q14
- * product Q15 Q15
- * shifted prod. Q16 Q16
- * temp Q0 Q0
- *
- * y2 Q10 Q12
- * gain_code Q1 Q1
- * product Q12 Q14
- * kshift 4 2
- * shifted prod. Q16 Q16
- * k Q0 Q0
- * mem_w0,xn,sum Q0 Q0
- */
-
- L_temp = ((Word32)y1[i] * gain_pit);
- temp = (Word16)(L_temp >> 14);
-
- L_temp = ((Word32)y2[i] * gain_code);
- temp += (Word16)(L_temp >> kShift);
-
- mem_w0[j] = xn[i] - temp;
- }
-
- return;
-}
generated by cgit v1.1 at 2024-06-02 00:43:19 +0000