nok_lt_prediction.h
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上传日期:2007-02-02
资源大小:6116k
文件大小:3k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /************************************************************************
- This software module was originally developed by
- Nokia in the course of development of the MPEG-2 AAC/MPEG-4
- Audio standard ISO/IEC13818-7, 14496-1, 2 and 3.
- This software module is an implementation of a part
- of one or more MPEG-2 AAC/MPEG-4 Audio tools as specified by the
- MPEG-2 aac/MPEG-4 Audio standard. ISO/IEC gives users of the
- MPEG-2aac/MPEG-4 Audio standards free license to this software module
- or modifications thereof for use in hardware or software products
- claiming conformance to the MPEG-2 aac/MPEG-4 Audio standards. Those
- intending to use this software module in hardware or software products
- are advised that this use may infringe existing patents. The original
- developer of this software module, 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-2 aac/MPEG-4
- Audio conforming products. The original developer retains full right to
- use the code for the developer's own purpose, assign or donate the code to a
- third party and to inhibit third party from using the code for non
- MPEG-2 aac/MPEG-4 Audio conforming products. This copyright notice
- must be included in all copies or derivative works.
- Copyright (c)1997.
- ***************************************************************************/
- #ifndef _NOK_LT_PREDICTION_H
- #define _NOK_LT_PREDICTION_H
- #include "all.h"
- #include "block.h"
- #include "nok_ltp_common.h"
- #define truncate(sig_in)
- ((sig_in) > 32767 ? 32767 : (
- (sig_in) < -32768 ? -32768 : (
- (sig_in) > 0.0 ? (sig_in)+0.5 : (
- (sig_in) <= 0.0 ? (sig_in)-0.5 : 0))))
- extern void nok_init_lt_pred(NOK_LT_PRED_STATUS **lt_status, int channels);
- extern void nok_end_lt_pred(NOK_LT_PRED_STATUS **lt_status, int channels);
- extern void nok_lt_predict(faacDecHandle hDecoder, Info *info, WINDOW_TYPE win_type, Wnd_Shape *win_shape,
- int *sbk_prediction_used, int *sfb_prediction_used,
- NOK_LT_PRED_STATUS *lt_status, Float weight, int *delay,
- Float *current_frame, int block_size_long, int block_size_medium,
- int block_size_short, TNS_frame_info *tns_frame_info);
- extern void nok_lt_update(NOK_LT_PRED_STATUS *lt_status, Float *time_signal,
- Float *overlap_signal, int block_size_long);
- extern void nok_lt_decode(faacDecHandle hDecoder, int max_sfb, int *sbk_prediction_used,
- int *sfb_prediction_used, Float *weight, int *delay);
- #endif /* not defined _NOK_LT_PREDICTION_H */