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modes.h

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00001 /* Copyright (C) 2002 Jean-Marc Valin */
00006 /*
00007    Redistribution and use in source and binary forms, with or without
00008    modification, are permitted provided that the following conditions
00009    are met:
00010    
00011    - Redistributions of source code must retain the above copyright
00012    notice, this list of conditions and the following disclaimer.
00013    
00014    - Redistributions in binary form must reproduce the above copyright
00015    notice, this list of conditions and the following disclaimer in the
00016    documentation and/or other materials provided with the distribution.
00017    
00018    - Neither the name of the Xiph.org Foundation nor the names of its
00019    contributors may be used to endorse or promote products derived from
00020    this software without specific prior written permission.
00021    
00022    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00023    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00024    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
00025    A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
00026    CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00027    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00028    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00029    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00030    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00031    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00032    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00033 
00034 */
00035 
00036 #ifndef MODES_H
00037 #define MODES_H
00038 
00039 #include "speex.h"
00040 #include "speex_bits.h"
00041 
00042 
00043 #define NB_SUBMODES 16
00044 #define NB_SUBMODE_BITS 4
00045 
00046 #define SB_SUBMODES 8
00047 #define SB_SUBMODE_BITS 3
00048 
00049 
00051 typedef void (*lsp_quant_func)(float *, float *, int, SpeexBits *);
00052 
00054 typedef void (*lsp_unquant_func)(float *, int, SpeexBits *);
00055 
00056 
00058 typedef int (*ltp_quant_func)(float *, float *, float *, float *, 
00059                               float *, float *, void *, int, int, float, 
00060                               int, int, SpeexBits*, char *, float *, float *, int, int);
00061 
00063 typedef void (*ltp_unquant_func)(float *, int, int, float, void *, int, int *,
00064                                  float *, SpeexBits*, char*, int, int, float, int);
00065 
00066 
00068 typedef void (*innovation_quant_func)(float *, float *, float *, float *, void *, int, int, 
00069                                       float *, float *, SpeexBits *, char *, int);
00070 
00072 typedef void (*innovation_unquant_func)(float *, void *, int, SpeexBits*, char *);
00073 
00075 typedef struct SpeexSubmode {
00076    int     lbr_pitch;          
00077    int     forced_pitch_gain;  
00078    int     have_subframe_gain; 
00079    int     double_codebook;    
00080    /*LSP functions*/
00081    lsp_quant_func    lsp_quant; 
00082    lsp_unquant_func  lsp_unquant; 
00084    /*Lont-term predictor functions*/
00085    ltp_quant_func    ltp_quant; 
00086    ltp_unquant_func  ltp_unquant; 
00087    void             *ltp_params; 
00089    /*Quantization of innovation*/
00090    innovation_quant_func innovation_quant; 
00091    innovation_unquant_func innovation_unquant; 
00092    void             *innovation_params; 
00094    /*Synthesis filter enhancement*/
00095    float             lpc_enh_k1; 
00096    float             lpc_enh_k2; 
00097    float             comb_gain;  
00099    int               bits_per_frame; 
00100 } SpeexSubmode;
00101 
00103 typedef struct SpeexNBMode {
00104    int     frameSize;      
00105    int     subframeSize;   
00106    int     lpcSize;        
00107    int     bufSize;        
00108    int     pitchStart;     
00109    int     pitchEnd;       
00111    float   gamma1;         
00112    float   gamma2;         
00113    float   lag_factor;     
00114    float   lpc_floor;      
00115    float   preemph;        
00117 #ifdef EPIC_48K
00118    int     lbr48k;         
00119 #endif
00120 
00121    SpeexSubmode *submodes[NB_SUBMODES]; 
00122    int     defaultSubmode; 
00123    int     quality_map[11]; 
00124 } SpeexNBMode;
00125 
00126 
00128 typedef struct SpeexSBMode {
00129    SpeexMode *nb_mode;    
00130    int     frameSize;     
00131    int     subframeSize;  
00132    int     lpcSize;       
00133    int     bufSize;       
00134    float   gamma1;        
00135    float   gamma2;        
00136    float   lag_factor;    
00137    float   lpc_floor;     
00138    float   preemph;       
00139    float   folding_gain;
00140 
00141    SpeexSubmode *submodes[SB_SUBMODES]; 
00142    int     defaultSubmode; 
00143    int     low_quality_map[11]; 
00144    int     quality_map[11]; 
00145    float   (*vbr_thresh)[11];
00146    int     nb_modes;
00147 } SpeexSBMode;
00148 
00149 
00150 #endif

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