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OVMS3-idf/components/bt/bluedroid/external/sbc/encoder/srce/sbc_dct_coeffs.c

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/******************************************************************************
*
* 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 "bt_target.h"
#include "sbc_encoder.h"
#if (defined(SBC_ENC_INCLUDED) && SBC_ENC_INCLUDED == TRUE)
/*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
#endif /* #if (defined(SBC_ENC_INCLUDED) && SBC_ENC_INCLUDED == TRUE) */
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