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/*
* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*
*/
#ifndef _MIPSSP_H_
#define _MIPSSP_H_
#include "dl/api/omxtypes.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
* Number of sub-transforms performed in the final stage of the 65536-size FFT.
* The number of sub-transforms for all other stages can be derived from this
* number. This sequence of numbers is equivalent to the Jacobsthal number
* sequence (see http://en.wikipedia.org/wiki/Jacobsthal_number).
*/
#define SUBTRANSFORM_CONST (0x2aab)
#define SQRT1_2 (0.7071067812f) /* sqrt(0.5f) */
extern OMX_F32 mipsSP_FFT_F32TwiddleTable[];
typedef struct MIPSFFTSpec_R_FC32_Tag {
OMX_U32 order;
OMX_U16* pBitRev;
OMX_U16* pBitRevInv;
const OMX_U16* pOffset;
OMX_F32* pTwiddle;
OMX_F32* pBuf;
} MIPSFFTSpec_R_FC32;
#ifdef __cplusplus
}
#endif
#endif
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