phi_gxit.h
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上传日期:2007-02-02
资源大小:6116k
文件大小:5k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*====================================================================*/
- /* MPEG-4 Audio (ISO/IEC 14496-3) Copyright Header */
- /*====================================================================*/
- /*
- This software module was originally developed by Rakesh Taori and Andy
- Gerrits (Philips Research Laboratories, Eindhoven, The Netherlands) in
- the course of development of the MPEG-4 Audio (ISO/IEC 14496-3). This
- software module is an implementation of a part of one or more MPEG-4
- Audio (ISO/IEC 14496-3) tools as specified by the MPEG-4 Audio
- (ISO/IEC 14496-3). ISO/IEC gives users of the MPEG-4 Audio (ISO/IEC
- 14496-3) free license to this software module or modifications thereof
- for use in hardware or software products claiming conformance to the
- MPEG-4 Audio (ISO/IEC 14496-3). Those intending to use this software
- module in hardware or software products are advised that its use may
- infringe existing patents. The original developer of this software
- module and his/her company, the subsequent editors and their
- companies, and ISO/IEC have no liability for use of this software
- module or modifications thereof in an implementation. Copyright is not
- released for non MPEG-4 Audio (ISO/IEC 14496-3) conforming products.
- CN1 retains full right to use the code for his/her own purpose, assign
- or donate the code to a third party and to inhibit third parties from
- using the code for non MPEG-4 Audio (ISO/IEC 14496-3) conforming
- products. This copyright notice must be included in all copies or
- derivative works. Copyright 1996.
- */
- /*====================================================================*/
- /*======================================================================*/
- /* */
- /* INCLUDE_FILE: PHI_GXIT.H */
- /* PACKAGE: WDBxx */
- /* COMPONENT: Excitation Generation Module */
- /* */
- /*======================================================================*/
- #ifndef _phi_gxit_h_
- #define _phi_gxit_h_
- #include "phi_priv.h"
- #ifdef __cplusplus
- extern "C" {
- #endif
- /*======================================================================*/
- /* Function Prototype: PHI_init_excitation_generation */
- /*======================================================================*/
- void
- PHI_init_excitation_generation
- (
- const long max_lag, /* In:Maximum permitted lag in the adaptive cbk */
- const long sbfrm_size, /* In:Size of subframe in samples */
- const long RPE_configuration, /* In:Confguration */
- PHI_PRIV_TYPE * PHI_Priv /* In/Out: private data (instance context) */
- );
- /*======================================================================*/
- /* Function Prototype: celp_excitation_generation */
- /*======================================================================*/
- void
- celp_excitation_generation
- (
- /* -------------------------------------*/
- /* INPUT PARAMETERS */
- /* -------------------------------------*/
- unsigned long shape_indices[], /* Lag indices for Adaptive & Fixed cbks*/
- unsigned long gain_indices[], /* Gains for Adaptive & Fixed cbks */
- long num_shape_cbks, /* Number of shape codebooks */
- long num_gain_cbks, /* Number of gain codebooks */
- unsigned long rms_index, /* NOT USED HERE: RMS value subframe ?? */
- float int_Qlpc_coefficients[], /* Interpolated LPC coeffs of subframe */
- long lpc_order, /* Order of LPC */
- long sbfrm_size, /* In: Number of samples in the subframe*/
- long n_subframes, /* In: Number of subframes */
- unsigned long signal_mode, /* In: Configuration Input */
- long frame_bit_allocation[], /* In: Configuration Input */
- /* -------------------------------------*/
- /* OUTPUT PARAMETERS */
- /* -------------------------------------*/
- float excitation[], /* Out: Excitation Signal */
- long *acb_delay, /* NOT USED HERE: Pitch for post filter?*/
- float *adaptive_gain, /* NOT USED HERE: ???? */
- PHI_PRIV_TYPE * PHI_Priv /* In/Out: private data (instance context)*/
- );
- /*======================================================================*/
- /* Function Prototype: PHI_close_excitation_generation */
- /*======================================================================*/
- void PHI_close_excitation_generation(
- PHI_PRIV_TYPE * PHI_Priv /* In: private data (instance context)*/
- );
- #ifdef __cplusplus
- }
- #endif
- #endif /* #ifndef _phi_gxit_h_ */
- /*======================================================================*/
- /* H I S T O R Y */
- /*======================================================================*/
- /* 17-04-96 R. Taori Initial Version */
- /* 30-08-96 R. Taori Modified interface to meet Tampere requirements */