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cb_search.h

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00001 /* Copyright (C) 2002 Jean-Marc Valin & David Rowe
00002    File: cb_search.c
00003    Overlapped codebook search
00004 
00005    Redistribution and use in source and binary forms, with or without
00006    modification, are permitted provided that the following conditions
00007    are met:
00008    
00009    - Redistributions of source code must retain the above copyright
00010    notice, this list of conditions and the following disclaimer.
00011    
00012    - Redistributions in binary form must reproduce the above copyright
00013    notice, this list of conditions and the following disclaimer in the
00014    documentation and/or other materials provided with the distribution.
00015    
00016    - Neither the name of the Xiph.org Foundation nor the names of its
00017    contributors may be used to endorse or promote products derived from
00018    this software without specific prior written permission.
00019    
00020    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00021    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00022    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
00023    A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
00024    CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00025    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00026    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00027    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00028    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00029    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00030    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00031 */
00032 
00033 #ifndef CB_SEARCH_H
00034 #define CB_SEARCH_H
00035 
00036 #include "speex_bits.h"
00037 
00038 typedef struct split_cb_params {
00039    int     subvect_size;
00040    int     nb_subvect;
00041    signed char  *shape_cb;
00042    int     shape_bits;
00043    int     have_sign;
00044 } split_cb_params;
00045 
00046 
00047 void split_cb_search_shape_sign(
00048 float target[],                 /* target vector */
00049 float ak[],                     /* LPCs for this subframe */
00050 float awk1[],                   /* Weighted LPCs for this subframe */
00051 float awk2[],                   /* Weighted LPCs for this subframe */
00052 void *par,                      /* Codebook/search parameters*/
00053 int   p,                        /* number of LPC coeffs */
00054 int   nsf,                      /* number of samples in subframe */
00055 float *exc,
00056 float *r,
00057 SpeexBits *bits,
00058 char *stack,
00059 int   complexity
00060 );
00061 
00062 void split_cb_shape_sign_unquant(
00063 float *exc,
00064 void *par,                      /* non-overlapping codebook */
00065 int   nsf,                      /* number of samples in subframe */
00066 SpeexBits *bits,
00067 char *stack
00068 );
00069 
00070 
00071 void noise_codebook_quant(
00072 float target[],                 /* target vector */
00073 float ak[],                     /* LPCs for this subframe */
00074 float awk1[],                   /* Weighted LPCs for this subframe */
00075 float awk2[],                   /* Weighted LPCs for this subframe */
00076 void *par,                      /* Codebook/search parameters*/
00077 int   p,                        /* number of LPC coeffs */
00078 int   nsf,                      /* number of samples in subframe */
00079 float *exc,
00080 float *r,
00081 SpeexBits *bits,
00082 char *stack,
00083 int   complexity
00084 );
00085 
00086 
00087 void noise_codebook_unquant(
00088 float *exc,
00089 void *par,                      /* non-overlapping codebook */
00090 int   nsf,                      /* number of samples in subframe */
00091 SpeexBits *bits,
00092 char *stack
00093 );
00094 
00095 #endif

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