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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/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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