166 lines
5.9 KiB
C
166 lines
5.9 KiB
C
/* Copyright (C) 2005 Analog Devices */
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/**
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@file ltp_bfin.h
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@author Jean-Marc Valin
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@brief Long-Term Prediction functions (Blackfin version)
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*/
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/*
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of the Xiph.org Foundation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#define OVERRIDE_INNER_PROD
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static spx_word32_t inner_prod(const spx_word16_t *x, const spx_word16_t *y, int len)
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{
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spx_word32_t sum=0;
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__asm__ __volatile__ (
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"P0 = %3;\n\t"
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"P1 = %1;\n\t"
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"P2 = %2;\n\t"
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"I0 = P1;\n\t"
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"I1 = P2;\n\t"
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"L0 = 0;\n\t"
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"L1 = 0;\n\t"
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"A0 = 0;\n\t"
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"R0.L = W[I0++] || R1.L = W[I1++];\n\t"
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"LOOP inner%= LC0 = P0;\n\t"
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"LOOP_BEGIN inner%=;\n\t"
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"A0 += R0.L*R1.L (IS) || R0.L = W[I0++] || R1.L = W[I1++];\n\t"
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"LOOP_END inner%=;\n\t"
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"A0 += R0.L*R1.L (IS);\n\t"
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"A0 = A0 >>> 6;\n\t"
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"R0 = A0;\n\t"
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"%0 = R0;\n\t"
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: "=m" (sum)
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: "m" (x), "m" (y), "d" (len-1)
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: "P0", "P1", "P2", "R0", "R1", "A0", "I0", "I1", "L0", "L1", "R3"
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);
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return sum;
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}
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#define OVERRIDE_PITCH_XCORR
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static void pitch_xcorr(const spx_word16_t *_x, const spx_word16_t *_y, spx_word32_t *corr, int len, int nb_pitch, char *stack)
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{
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corr += nb_pitch - 1;
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__asm__ __volatile__ (
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"P2 = %0;\n\t"
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"I0 = P2;\n\t" /* x in I0 */
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"B0 = P2;\n\t" /* x in B0 */
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"R0 = %3;\n\t" /* len in R0 */
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"P3 = %3;\n\t"
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"P3 += -2;\n\t" /* len in R0 */
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"P4 = %4;\n\t" /* nb_pitch in R0 */
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"R1 = R0 << 1;\n\t" /* number of bytes in x */
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"L0 = R1;\n\t"
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"P0 = %1;\n\t"
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"P1 = %2;\n\t"
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"B1 = P1;\n\t"
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"L1 = 0;\n\t" /*Disable looping on I1*/
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"r0 = [I0++];\n\t"
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"LOOP pitch%= LC0 = P4 >> 1;\n\t"
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"LOOP_BEGIN pitch%=;\n\t"
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"I1 = P0;\n\t"
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"A1 = A0 = 0;\n\t"
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"R1 = [I1++];\n\t"
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"LOOP inner_prod%= LC1 = P3 >> 1;\n\t"
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"LOOP_BEGIN inner_prod%=;\n\t"
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"A1 += R0.L*R1.H, A0 += R0.L*R1.L (IS) || R1.L = W[I1++];\n\t"
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"A1 += R0.H*R1.L, A0 += R0.H*R1.H (IS) || R1.H = W[I1++] || R0 = [I0++];\n\t"
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"LOOP_END inner_prod%=;\n\t"
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"A1 += R0.L*R1.H, A0 += R0.L*R1.L (IS) || R1.L = W[I1++];\n\t"
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"A1 += R0.H*R1.L, A0 += R0.H*R1.H (IS) || R0 = [I0++];\n\t"
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"A0 = A0 >>> 6;\n\t"
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"A1 = A1 >>> 6;\n\t"
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"R2 = A0, R3 = A1;\n\t"
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"[P1--] = r2;\n\t"
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"[P1--] = r3;\n\t"
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"P0 += 4;\n\t"
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"LOOP_END pitch%=;\n\t"
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"L0 = 0;\n\t"
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: : "m" (_x), "m" (_y), "m" (corr), "m" (len), "m" (nb_pitch)
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: "A0", "A1", "P0", "P1", "P2", "P3", "P4", "R0", "R1", "R2", "R3", "I0", "I1", "L0", "L1", "B0", "B1", "memory"
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);
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}
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#define OVERRIDE_COMPUTE_PITCH_ERROR
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static inline spx_word32_t compute_pitch_error(spx_word32_t *C, spx_word16_t *g, spx_word16_t pitch_control)
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{
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spx_word32_t sum;
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__asm__ __volatile__
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(
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"A1 = A0 = 0;\n\t"
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"R0 = [%1++];\n\t"
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"R1.L = %2.L*%5.L (IS);\n\t"
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"R0 <<= 1;\n\t"
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"A1 += R1.L*R0.L (M), A0 += R1.L*R0.H (IS) || R0 = [%1++];\n\t"
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"R1.L = %3.L*%5.L (IS);\n\t"
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"R0 <<= 1;\n\t"
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"A1 += R1.L*R0.L (M), A0 += R1.L*R0.H (IS) || R0 = [%1++];\n\t"
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"R1.L = %4.L*%5.L (IS);\n\t"
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"R0 <<= 1;\n\t"
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"A1 += R1.L*R0.L (M), A0 += R1.L*R0.H (IS) || R0 = [%1++];\n\t"
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"R1.L = %2.L*%3.L (IS);\n\t"
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"R0 <<= 1;\n\t"
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"A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t"
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"R1.L = %4.L*%3.L (IS);\n\t"
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"R0 <<= 1;\n\t"
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"A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t"
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"R1.L = %4.L*%2.L (IS);\n\t"
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"R0 <<= 1;\n\t"
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"A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t"
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"R1.L = %2.L*%2.L (IS);\n\t"
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"R0 <<= 1;\n\t"
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"A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t"
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"R1.L = %3.L*%3.L (IS);\n\t"
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"R0 <<= 1;\n\t"
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"A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS) || R0 = [%1++];\n\t"
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"R1.L = %4.L*%4.L (IS);\n\t"
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"R0 <<= 1;\n\t"
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"A1 -= R1.L*R0.L (M), A0 -= R1.L*R0.H (IS);\n\t"
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"A1 = A1 >>> 16;\n\t"
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"A0 += A1;\n\t"
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"%0 = A0;\n\t"
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: "=&D" (sum), "=a" (C)
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: "d" (g[0]), "d" (g[1]), "d" (g[2]), "d" (pitch_control), "1" (C)
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: "R0", "R1", "R2", "A0"
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);
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return sum;
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}
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