diff options
Diffstat (limited to 'media/libstagefright/codecs/amrnb/enc/src/calc_en.h')
| -rw-r--r-- | media/libstagefright/codecs/amrnb/enc/src/calc_en.h | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/media/libstagefright/codecs/amrnb/enc/src/calc_en.h b/media/libstagefright/codecs/amrnb/enc/src/calc_en.h deleted file mode 100644 index 052f5b4..0000000 --- a/media/libstagefright/codecs/amrnb/enc/src/calc_en.h +++ /dev/null @@ -1,192 +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. -****************************************************************************************/ -/* ------------------------------------------------------------------------------- - - - - Filename: /audio/gsm_amr/c/src/include/c_g_aver.h - - Date: 12/29/2002 - ------------------------------------------------------------------------------- - REVISION HISTORY - - Description: Moved _cplusplus #ifdef after Include section. - - Description: - ------------------------------------------------------------------------------- - INCLUDE DESCRIPTION - - File : calc_en.h - Purpose : calculation of energy coefficients for quantizers - ------------------------------------------------------------------------------- -*/ - -#ifndef _CALC_EN_H_ -#define _CALC_EN_H_ -#define calc_en_h "$Id $" - -/*---------------------------------------------------------------------------- -; INCLUDES -----------------------------------------------------------------------------*/ -#include "typedef.h" -#include "mode.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 - ----------------------------------------------------------------------------*/ - - - /*---------------------------------------------------------------------------- - ; GLOBAL FUNCTION DEFINITIONS - ; [List function prototypes here] - ----------------------------------------------------------------------------*/ - /* - * FUNCTION: calc_unfilt_energies - * - * PURPOSE: calculation of several energy coefficients for unfiltered - * excitation signals and the LTP coding gain - * - * frac_en[0]*2^exp_en[0] = <res res> // LP residual energy - * frac_en[1]*2^exp_en[1] = <exc exc> // LTP residual energy - * frac_en[2]*2^exp_en[2] = <exc code> // LTP/CB innovation dot product - * frac_en[3]*2^exp_en[3] = <lres lres> // LTP residual energy - * // (lres = res - gain_pit*exc) - * ltpg = log2(LP_res_en / LTP_res_en) - */ - void - calc_unfilt_energies( - Word16 res[], /* i : LP residual, Q0 */ - Word16 exc[], /* i : LTP excitation (unfiltered), Q0 */ - Word16 code[], /* i : CB innovation (unfiltered), Q13 */ - Word16 gain_pit, /* i : pitch gain, Q14 */ - Word16 L_subfr, /* i : Subframe length */ - - Word16 frac_en[], /* o : energy coefficients (3), fraction part, Q15 */ - Word16 exp_en[], /* o : energy coefficients (3), exponent part, Q0 */ - Word16 *ltpg, /* o : LTP coding gain (log2()), Q13 */ - Flag *pOverflow - ); - - /* - * FUNCTION: calc_filt_energies - * - * PURPOSE: calculation of several energy coefficients for filtered - * excitation signals - * - * Compute coefficients need for the quantization and the optimum - * codebook gain gcu (for MR475 only). - * - * coeff[0] = y1 y1 - * coeff[1] = -2 xn y1 - * coeff[2] = y2 y2 - * coeff[3] = -2 xn y2 - * coeff[4] = 2 y1 y2 - * - * - * gcu = <xn2, y2> / <y2, y2> (0 if <xn2, y2> <= 0) - * - * Product <y1 y1> and <xn y1> have been computed in G_pitch() and - * are in vector g_coeff[]. - */ - void - calc_filt_energies( - enum Mode mode, /* i : coder mode */ - Word16 xn[], /* i : LTP target vector, Q0 */ - Word16 xn2[], /* i : CB target vector, Q0 */ - Word16 y1[], /* i : Adaptive codebook, Q0 */ - Word16 Y2[], /* i : Filtered innovative vector, Q12 */ - Word16 g_coeff[], /* i : Correlations <xn y1> <y1 y1> */ - /* computed in G_pitch() */ - - Word16 frac_coeff[],/* o : energy coefficients (5), fraction part, Q15 */ - Word16 exp_coeff[], /* o : energy coefficients (5), exponent part, Q0 */ - Word16 *cod_gain_frac,/* o: optimum codebook gain (fraction part), Q15 */ - Word16 *cod_gain_exp, /* o: optimum codebook gain (exponent part), Q0 */ - Flag *pOverflow - ); - - /* - * FUNCTION: calc_target_energy - * - * PURPOSE: calculation of target energy - * - * en = <xn, xn> - */ - void - calc_target_energy( - Word16 xn[], /* i: LTP target vector, Q0 */ - Word16 *en_exp, /* o: optimum codebook gain (exponent part), Q0 */ - Word16 *en_frac, /* o: optimum codebook gain (fraction part), Q15 */ - Flag *pOverflow - ); - -#ifdef __cplusplus -} -#endif - -#endif /* _CALC_EN_H_ */ - - - - - |