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Diffstat (limited to 'media/libstagefright/codecs/amrnb/common/src/q_plsf.cpp')
-rw-r--r-- | media/libstagefright/codecs/amrnb/common/src/q_plsf.cpp | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrnb/common/src/q_plsf.cpp b/media/libstagefright/codecs/amrnb/common/src/q_plsf.cpp new file mode 100644 index 0000000..5d96baa --- /dev/null +++ b/media/libstagefright/codecs/amrnb/common/src/q_plsf.cpp @@ -0,0 +1,144 @@ +/* ------------------------------------------------------------------ + * 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. +****************************************************************************************/ +/* +******************************************************************************** +* +* GSM AMR-NB speech codec R98 Version 7.5.0 March 2, 2001 +* R99 Version 3.2.0 +* REL-4 Version 4.0.0 +* +******************************************************************************** +* +* File : q_plsf.c +* Purpose : common part (init, exit, reset) of LSF quantization +* module (rest in q_plsf_3.c and q_plsf_5.c) +* +******************************************************************************** +*/ + +/* +******************************************************************************** +* MODULE INCLUDE FILE AND VERSION ID +******************************************************************************** +*/ + +#include <stdlib.h> + +#include "q_plsf.h" + +/* +******************************************************************************** +* INCLUDE FILES +******************************************************************************** +*/ +#include "typedef.h" +#include "basic_op.h" + + +/* +******************************************************************************** +* PUBLIC PROGRAM CODE +******************************************************************************** +*/ + +/* +************************************************************************** +* +* Function : Q_plsf_init +* Purpose : Allocates memory and initializes state variables +* +************************************************************************** +*/ +Word16 Q_plsf_init(Q_plsfState **state) +{ + Q_plsfState* s; + + if (state == (Q_plsfState **) NULL) + { + /* fprintf(stderr, "Q_plsf_init: invalid parameter\n"); */ + return -1; + } + *state = NULL; + + /* allocate memory */ + if ((s = (Q_plsfState *) malloc(sizeof(Q_plsfState))) == NULL) + { + /* fprintf(stderr, "Q_plsf_init: can not malloc state structure\n"); */ + return -1; + } + + Q_plsf_reset(s); + *state = s; + + return 0; +} + +/* +************************************************************************** +* +* Function : Q_plsf_reset +* Purpose : Resets state memory +* +************************************************************************** +*/ +Word16 Q_plsf_reset(Q_plsfState *state) +{ + Word16 i; + + if (state == (Q_plsfState *) NULL) + { + /* fprintf(stderr, "Q_plsf_reset: invalid parameter\n"); */ + return -1; + } + + for (i = 0; i < M; i++) + state->past_rq[i] = 0; + + return 0; +} + +/* +************************************************************************** +* +* Function : Q_plsf_exit +* Purpose : The memory used for state memory is freed +* +************************************************************************** +*/ +void Q_plsf_exit(Q_plsfState **state) +{ + if (state == NULL || *state == NULL) + return; + + /* deallocate memory */ + free(*state); + *state = NULL; + + return; +} |