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/* Copyright (C) 2005 Analog Devices */
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@author Jean-Marc Valin
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@brief Fixed codebook functions (Blackfin version)
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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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- 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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#define OVERRIDE_COMPUTE_WEIGHTED_CODEBOOK
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void compute_weighted_codebook(const signed char *shape_cb, const spx_word16_t *r, spx_word16_t *resp, spx_word16_t *resp2, spx_word32_t *E, int shape_cb_size, int subvect_size, char *stack)
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for (i=0;i<shape_cb_size;i++)
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__asm__ __volatile__ (
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"LOOP outter%= LC0;\n\t"
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"LOOP_BEGIN outter%=;\n\t"
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"R0 = B[P4++] (X) || R1.L = W[I1--];\n\t"
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"LOOP inner%= LC1 = P0;\n\t"
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"LOOP_BEGIN inner%=;\n\t"
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"A0 += R0.L*R1.L (IS) || R0 = B[P4++] (X) || R1.L = W[I1--];\n\t"
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"LOOP_END inner%=;\n\t"
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"A1 += R0.L*R0.L (IS);\n\t"
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"LOOP_END outter%=;\n\t"
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: "m" (subvect_size), "m" (shape_cb), "m" (r), "m" (resp), "m" (E)
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: "A0", "P0", "P1", "P2", "P3", "P4", "R0", "R1", "R2", "I0", "I1", "L0", "L1", "A0", "A1", "memory"
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shape_cb += subvect_size;
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#define OVERRIDE_TARGET_UPDATE
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static inline void target_update(spx_word16_t *t, spx_word16_t g, spx_word16_t *r, int len)
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"LOOP tupdate%= LC0 = %3;\n\t"
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"LOOP_BEGIN tupdate%=;\n\t"
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"R0.L = W[I0] || R1.L = W[I1++];\n\t"
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"R1 = (A1 = R1.L*%2.L) (IS);\n\t"
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"R0.L = R0.L - R1.L;\n\t"
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"LOOP_END tupdate%=;\n\t"
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: "a" (t), "a" (r), "d" (g), "a" (len)
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: "R0", "R1", "A1", "I0", "I1", "L0", "L1"