198913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project/* Copyright (C) 2006 David Rowe */ 298913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project/** 398913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project @file lsp_bfin.h 498913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project @author David Rowe 598913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project @brief LSP routines optimised for the Blackfin 698913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project*/ 798913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project/* 898913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project Redistribution and use in source and binary forms, with or without 998913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project modification, are permitted provided that the following conditions 1098913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project are met: 1198913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project 1298913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project - Redistributions of source code must retain the above copyright 1398913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project notice, this list of conditions and the following disclaimer. 1498913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project 1598913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project - Redistributions in binary form must reproduce the above copyright 1698913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project notice, this list of conditions and the following disclaimer in the 1798913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project documentation and/or other materials provided with the distribution. 1898913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project 1998913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project - Neither the name of the Xiph.org Foundation nor the names of its 2098913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project contributors may be used to endorse or promote products derived from 2198913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project this software without specific prior written permission. 2298913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project 2398913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2498913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 2598913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2698913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR 2798913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 2898913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 2998913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 3098913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 3198913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 3298913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 3398913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3498913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project*/ 3598913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project 3698913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project#define OVERRIDE_CHEB_POLY_EVA 3798913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project#ifdef OVERRIDE_CHEB_POLY_EVA 3898913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Projectstatic inline spx_word32_t cheb_poly_eva( 3998913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project spx_word16_t *coef, /* P or Q coefs in Q13 format */ 4098913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project spx_word16_t x, /* cos of freq (-1.0 to 1.0) in Q14 format */ 4198913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project int m, /* LPC order/2 */ 4298913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project char *stack 4398913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project) 4498913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project{ 4598913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project spx_word32_t sum; 4698913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project 4798913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project __asm__ __volatile__ 4898913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project ( 4998913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "P0 = %2;\n\t" /* P0: coef[m], coef[m-1],..., coef[0] */ 5098913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R4 = 8192;\n\t" /* R4: rounding constant */ 5198913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R2 = %1;\n\t" /* R2: x */ 5298913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project 5398913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R5 = -16383;\n\t" 5498913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R2 = MAX(R2,R5);\n\t" 5598913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R5 = 16383;\n\t" 5698913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R2 = MIN(R2,R5);\n\t" 5798913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project 5898913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R3 = W[P0--] (X);\n\t" /* R3: sum */ 5998913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R5 = W[P0--] (X);\n\t" 6098913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R5 = R5.L * R2.L (IS);\n\t" 6198913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R5 = R5 + R4;\n\t" 6298913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R5 >>>= 14;\n\t" 6398913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R3 = R3 + R5;\n\t" 6498913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project 6598913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R0 = R2;\n\t" /* R0: b0 */ 6698913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R1 = 16384;\n\t" /* R1: b1 */ 6798913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "LOOP cpe%= LC0 = %3;\n\t" 6898913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "LOOP_BEGIN cpe%=;\n\t" 6998913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "P1 = R0;\n\t" 7098913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R0 = R2.L * R0.L (IS) || R5 = W[P0--] (X);\n\t" 7198913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R0 >>>= 13;\n\t" 7298913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R0 = R0 - R1;\n\t" 7398913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R1 = P1;\n\t" 7498913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R5 = R5.L * R0.L (IS);\n\t" 7598913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R5 = R5 + R4;\n\t" 7698913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R5 >>>= 14;\n\t" 7798913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "R3 = R3 + R5;\n\t" 7898913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "LOOP_END cpe%=;\n\t" 7998913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project "%0 = R3;\n\t" 8098913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project : "=&d" (sum) 8198913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project : "a" (x), "a" (&coef[m]), "a" (m-1) 8298913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project : "R0", "R1", "R3", "R2", "R4", "R5", "P0", "P1" 8398913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project ); 8498913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project return sum; 8598913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project} 8698913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project#endif 8798913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project 8898913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project 8998913fed6520d8849fb2e246be943e04474aefaThe Android Open Source Project 90