minkbd: repo restructure

1 files changed, 0 insertions, 252 deletions

diff --git a/Blink/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_q31.c b/Blink/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_q31.c
deleted file mode 100644
index 934a3fc..0000000
--- a/Blink/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_q31.c
+++ /dev/null
@@ -1,252 +0,0 @@
-/* ----------------------------------------------------------------------

- * Project:      CMSIS DSP Library

- * Title:        arm_cfft_q31.c

- * Description:  Combined Radix Decimation in Frequency CFFT fixed point processing function

- *

- * $Date:        27. January 2017

- * $Revision:    V.1.5.1

- *

- * Target Processor: Cortex-M cores

- * -------------------------------------------------------------------- */

-/*

- * Copyright (C) 2010-2017 ARM Limited or its affiliates. All rights reserved.

- *

- * SPDX-License-Identifier: Apache-2.0

- *

- * 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

- *

- * 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.

- */

-

-#include "arm_math.h"

-

-extern void arm_radix4_butterfly_q31(

-    q31_t * pSrc,

-    uint32_t fftLen,

-    q31_t * pCoef,

-    uint32_t twidCoefModifier);

-

-extern void arm_radix4_butterfly_inverse_q31(

-    q31_t * pSrc,

-    uint32_t fftLen,

-    q31_t * pCoef,

-    uint32_t twidCoefModifier);

-

-extern void arm_bitreversal_32(

-    uint32_t * pSrc,

-    const uint16_t bitRevLen,

-    const uint16_t * pBitRevTable);

-

-void arm_cfft_radix4by2_q31(

-    q31_t * pSrc,

-    uint32_t fftLen,

-    const q31_t * pCoef);

-

-void arm_cfft_radix4by2_inverse_q31(

-    q31_t * pSrc,

-    uint32_t fftLen,

-    const q31_t * pCoef);

-

-/**

-* @ingroup groupTransforms

-*/

-

-/**

-* @addtogroup ComplexFFT

-* @{

-*/

-

-/**

-* @details

-* @brief       Processing function for the fixed-point complex FFT in Q31 format.

-* @param[in]      *S    points to an instance of the fixed-point CFFT structure.

-* @param[in, out] *p1   points to the complex data buffer of size <code>2*fftLen</code>. Processing occurs in-place.

-* @param[in]     ifftFlag       flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform.

-* @param[in]     bitReverseFlag flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output.

-* @return none.

-*/

-

-void arm_cfft_q31(

-    const arm_cfft_instance_q31 * S,

-    q31_t * p1,

-    uint8_t ifftFlag,

-    uint8_t bitReverseFlag)

-{

-    uint32_t L = S->fftLen;

-

-    if (ifftFlag == 1U)

-    {

-        switch (L)

-        {

-        case 16:

-        case 64:

-        case 256:

-        case 1024:

-        case 4096:

-            arm_radix4_butterfly_inverse_q31  ( p1, L, (q31_t*)S->pTwiddle, 1 );

-            break;

-

-        case 32:

-        case 128:

-        case 512:

-        case 2048:

-            arm_cfft_radix4by2_inverse_q31  ( p1, L, S->pTwiddle );

-            break;

-        }

-    }

-    else

-    {

-        switch (L)

-        {

-        case 16:

-        case 64:

-        case 256:

-        case 1024:

-        case 4096:

-            arm_radix4_butterfly_q31  ( p1, L, (q31_t*)S->pTwiddle, 1 );

-            break;

-

-        case 32:

-        case 128:

-        case 512:

-        case 2048:

-            arm_cfft_radix4by2_q31  ( p1, L, S->pTwiddle );

-            break;

-        }

-    }

-

-    if ( bitReverseFlag )

-        arm_bitreversal_32((uint32_t*)p1,S->bitRevLength,S->pBitRevTable);

-}

-

-/**

-* @} end of ComplexFFT group

-*/

-

-void arm_cfft_radix4by2_q31(

-    q31_t * pSrc,

-    uint32_t fftLen,

-    const q31_t * pCoef)

-{

-    uint32_t i, l;

-    uint32_t n2, ia;

-    q31_t xt, yt, cosVal, sinVal;

-    q31_t p0, p1;

-

-    n2 = fftLen >> 1;

-    ia = 0;

-    for (i = 0; i < n2; i++)

-    {

-        cosVal = pCoef[2*ia];

-        sinVal = pCoef[2*ia + 1];

-        ia++;

-

-        l = i + n2;

-        xt = (pSrc[2 * i] >> 2) - (pSrc[2 * l] >> 2);

-        pSrc[2 * i] = (pSrc[2 * i] >> 2) + (pSrc[2 * l] >> 2);

-

-        yt = (pSrc[2 * i + 1] >> 2) - (pSrc[2 * l + 1] >> 2);

-        pSrc[2 * i + 1] = (pSrc[2 * l + 1] >> 2) + (pSrc[2 * i + 1] >> 2);

-

-        mult_32x32_keep32_R(p0, xt, cosVal);

-        mult_32x32_keep32_R(p1, yt, cosVal);

-        multAcc_32x32_keep32_R(p0, yt, sinVal);

-        multSub_32x32_keep32_R(p1, xt, sinVal);

-

-        pSrc[2U * l] = p0 << 1;

-        pSrc[2U * l + 1U] = p1 << 1;

-

-    }

-

-    // first col

-    arm_radix4_butterfly_q31( pSrc, n2, (q31_t*)pCoef, 2U);

-    // second col

-    arm_radix4_butterfly_q31( pSrc + fftLen, n2, (q31_t*)pCoef, 2U);

-

-    for (i = 0; i < fftLen >> 1; i++)

-    {

-        p0 = pSrc[4*i+0];

-        p1 = pSrc[4*i+1];

-        xt = pSrc[4*i+2];

-        yt = pSrc[4*i+3];

-

-        p0 <<= 1;

-        p1 <<= 1;

-        xt <<= 1;

-        yt <<= 1;

-

-        pSrc[4*i+0] = p0;

-        pSrc[4*i+1] = p1;

-        pSrc[4*i+2] = xt;

-        pSrc[4*i+3] = yt;

-    }

-

-}

-

-void arm_cfft_radix4by2_inverse_q31(

-    q31_t * pSrc,

-    uint32_t fftLen,

-    const q31_t * pCoef)

-{

-    uint32_t i, l;

-    uint32_t n2, ia;

-    q31_t xt, yt, cosVal, sinVal;

-    q31_t p0, p1;

-

-    n2 = fftLen >> 1;

-    ia = 0;

-    for (i = 0; i < n2; i++)

-    {

-        cosVal = pCoef[2*ia];

-        sinVal = pCoef[2*ia + 1];

-        ia++;

-

-        l = i + n2;

-        xt = (pSrc[2 * i] >> 2) - (pSrc[2 * l] >> 2);

-        pSrc[2 * i] = (pSrc[2 * i] >> 2) + (pSrc[2 * l] >> 2);

-

-        yt = (pSrc[2 * i + 1] >> 2) - (pSrc[2 * l + 1] >> 2);

-        pSrc[2 * i + 1] = (pSrc[2 * l + 1] >> 2) + (pSrc[2 * i + 1] >> 2);

-

-        mult_32x32_keep32_R(p0, xt, cosVal);

-        mult_32x32_keep32_R(p1, yt, cosVal);

-        multSub_32x32_keep32_R(p0, yt, sinVal);

-        multAcc_32x32_keep32_R(p1, xt, sinVal);

-

-        pSrc[2U * l] = p0 << 1;

-        pSrc[2U * l + 1U] = p1 << 1;

-

-    }

-

-    // first col

-    arm_radix4_butterfly_inverse_q31( pSrc, n2, (q31_t*)pCoef, 2U);

-    // second col

-    arm_radix4_butterfly_inverse_q31( pSrc + fftLen, n2, (q31_t*)pCoef, 2U);

-

-    for (i = 0; i < fftLen >> 1; i++)

-    {

-        p0 = pSrc[4*i+0];

-        p1 = pSrc[4*i+1];

-        xt = pSrc[4*i+2];

-        yt = pSrc[4*i+3];

-

-        p0 <<= 1;

-        p1 <<= 1;

-        xt <<= 1;

-        yt <<= 1;

-

-        pSrc[4*i+0] = p0;

-        pSrc[4*i+1] = p1;

-        pSrc[4*i+2] = xt;

-        pSrc[4*i+3] = yt;

-    }

-}

-