/****************************************************************************** * * Copyright (C) 1999-2012 Broadcom Corporation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ******************************************************************************/ /****************************************************************************** * * This file contains the coefficient table used for DCT computation in * analysis. * ******************************************************************************/ #include "sbc_encoder.h" /*DCT coeff for 4 sub-band case.*/ #if (SBC_FAST_DCT == FALSE) const SINT16 gas16AnalDCTcoeff4[] = { (SINT16)(0.7071*32768), (SINT16)(0.9239*32768), (SINT16)(1.0000*32767), (SINT16)(0.9239*32768), (SINT16)(0.7071*32768), (SINT16)(0.3827*32768), (SINT16)(0.0000*32768), (SINT16)(-0.3827*32768), (SINT16)(-0.7071*32768), (SINT16)(0.3827*32768), (SINT16)(1.0000*32767), (SINT16)(0.3827*32768), (SINT16)(-0.7071*32768), (SINT16)(-0.9239*32768), (SINT16)(-0.0000*32768), (SINT16)(0.9239*32768), (SINT16)(-0.7071*32768), (SINT16)(-0.3827*32768), (SINT16)(1.0000*32767), (SINT16)(-0.3827*32768), (SINT16)(-0.7071*32768), (SINT16)(0.9239*32768), (SINT16)(0.0000*32768), (SINT16)(-0.9239*32768), (SINT16)(0.7071*32768), (SINT16)(-0.9239*32768), (SINT16)(1.0000*32767), (SINT16)(-0.9239*32768), (SINT16)(0.7071*32768), (SINT16)(-0.3827*32768), (SINT16)(-0.0000*32768), (SINT16)(0.3827*32768) }; /*DCT coeff for 8 sub-band case.*/ const SINT16 gas16AnalDCTcoeff8[] = { (SINT16)(0.7071*32768), (SINT16)(0.8315*32768), (SINT16)(0.9239*32768), (SINT16)(0.9808*32768), (SINT16)(1.0000*32767), (SINT16)(0.9808*32768), (SINT16)(0.9239*32768), (SINT16)(0.8315*32768), (SINT16)(0.7071*32768), (SINT16)(0.5556*32768), (SINT16)(0.3827*32768), (SINT16)(0.1951*32768), (SINT16)(0.0000*32768), (SINT16)(-0.1951*32768), (SINT16)(-0.3827*32768), (SINT16)(-0.5556*32768), (SINT16)(-0.7071*32768), (SINT16)(-0.1951*32768), (SINT16)(0.3827*32768), (SINT16)(0.8315*32768), (SINT16)(1.0000*32767), (SINT16)(0.8315*32768), (SINT16)(0.3827*32768), (SINT16)(-0.1951*32768), (SINT16)(-0.7071*32768), (SINT16)(-0.9808*32768), (SINT16)(-0.9239*32768), (SINT16)(-0.5556*32768), (SINT16)(-0.0000*32768), (SINT16)(0.5556*32768), (SINT16)(0.9239*32768), (SINT16)(0.9808*32768), (SINT16)(-0.7071*32768), (SINT16)(-0.9808*32768), (SINT16)(-0.3827*32768), (SINT16)(0.5556*32768), (SINT16)(1.0000*32767), (SINT16)(0.5556*32768), (SINT16)(-0.3827*32768), (SINT16)(-0.9808*32768), (SINT16)(-0.7071*32768), (SINT16)(0.1951*32768), (SINT16)(0.9239*32768), (SINT16)(0.8315*32768), (SINT16)(0.0000*32768), (SINT16)(-0.8315*32768), (SINT16)(-0.9239*32768), (SINT16)(-0.1951*32768), (SINT16)(0.7071*32768), (SINT16)(-0.5556*32768), (SINT16)(-0.9239*32768), (SINT16)(0.1951*32768), (SINT16)(1.0000*32767), (SINT16)(0.1951*32768), (SINT16)(-0.9239*32768), (SINT16)(-0.5556*32768), (SINT16)(0.7071*32768), (SINT16)(0.8315*32768), (SINT16)(-0.3827*32768), (SINT16)(-0.9808*32768), (SINT16)(-0.0000*32768), (SINT16)(0.9808*32768), (SINT16)(0.3827*32768), (SINT16)(-0.8315*32768), (SINT16)(0.7071*32768), (SINT16)(0.5556*32768), (SINT16)(-0.9239*32768), (SINT16)(-0.1951*32768), (SINT16)(1.0000*32767), (SINT16)(-0.1951*32768), (SINT16)(-0.9239*32768), (SINT16)(0.5556*32768), (SINT16)(0.7071*32768), (SINT16)(-0.8315*32768), (SINT16)(-0.3827*32768), (SINT16)(0.9808*32768), (SINT16)(0.0000*32768), (SINT16)(-0.9808*32768), (SINT16)(0.3827*32768), (SINT16)(0.8315*32768), (SINT16)(-0.7071*32768), (SINT16)(0.9808*32768), (SINT16)(-0.3827*32768), (SINT16)(-0.5556*32768), (SINT16)(1.0000*32767), (SINT16)(-0.5556*32768), (SINT16)(-0.3827*32768), (SINT16)(0.9808*32768), (SINT16)(-0.7071*32768), (SINT16)(-0.1951*32768), (SINT16)(0.9239*32768), (SINT16)(-0.8315*32768), (SINT16)(-0.0000*32768), (SINT16)(0.8315*32768), (SINT16)(-0.9239*32768), (SINT16)(0.1951*32768), (SINT16)(-0.7071*32768), (SINT16)(0.1951*32768), (SINT16)(0.3827*32768), (SINT16)(-0.8315*32768), (SINT16)(1.0000*32767), (SINT16)(-0.8315*32768), (SINT16)(0.3827*32768), (SINT16)(0.1951*32768), (SINT16)(-0.7071*32768), (SINT16)(0.9808*32768), (SINT16)(-0.9239*32768), (SINT16)(0.5556*32768), (SINT16)(-0.0000*32768), (SINT16)(-0.5556*32768), (SINT16)(0.9239*32768), (SINT16)(-0.9808*32768), (SINT16)(0.7071*32768), (SINT16)(-0.8315*32768), (SINT16)(0.9239*32768), (SINT16)(-0.9808*32768), (SINT16)(1.0000*32767), (SINT16)(-0.9808*32768), (SINT16)(0.9239*32768), (SINT16)(-0.8315*32768), (SINT16)(0.7071*32768), (SINT16)(-0.5556*32768), (SINT16)(0.3827*32768), (SINT16)(-0.1951*32768), (SINT16)(-0.0000*32768), (SINT16)(0.1951*32768), (SINT16)(-0.3827*32768), (SINT16)(0.5556*32768) }; #endif