repositories / deb_ffmpeg.git / blame
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| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (c) 2012 | |
| 3 | * MIPS Technologies, Inc., California. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its | |
| 14 | * contributors may be used to endorse or promote products derived from | |
| 15 | * this software without specific prior written permission. | |
| 16 | * | |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND | |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE | |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 27 | * SUCH DAMAGE. | |
| 28 | * | |
| 29 | * Author: Nedeljko Babic (nbabic@mips.com) | |
| 30 | * | |
| 31 | * LSP routines for ACELP-based codecs optimized for MIPS | |
| 32 | * | |
| 33 | * This file is part of FFmpeg. | |
| 34 | * | |
| 35 | * FFmpeg is free software; you can redistribute it and/or | |
| 36 | * modify it under the terms of the GNU Lesser General Public | |
| 37 | * License as published by the Free Software Foundation; either | |
| 38 | * version 2.1 of the License, or (at your option) any later version. | |
| 39 | * | |
| 40 | * FFmpeg is distributed in the hope that it will be useful, | |
| 41 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 42 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 43 | * Lesser General Public License for more details. | |
| 44 | * | |
| 45 | * You should have received a copy of the GNU Lesser General Public | |
| 46 | * License along with FFmpeg; if not, write to the Free Software | |
| 47 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 48 | */ | |
| 49 | ||
| 50 | /** | |
| 51 | * @file | |
| 52 | * Reference: libavcodec/lsp.c | |
| 53 | */ | |
| 54 | #ifndef AVCODEC_LSP_MIPS_H | |
| 55 | #define AVCODEC_LSP_MIPS_H | |
| 56 | ||
| 57 | #if HAVE_MIPSFPU && HAVE_INLINE_ASM | |
| 58 | static av_always_inline void ff_lsp2polyf_mips(const double *lsp, double *f, int lp_half_order) | |
| 59 | { | |
| 60 | int i, j = 0; | |
| 61 | double * p_fi = f; | |
| 62 | double * p_f = 0; | |
| 63 | ||
| 64 | f[0] = 1.0; | |
| 65 | f[1] = -2 * lsp[0]; | |
| 66 | lsp -= 2; | |
| 67 | ||
| 68 | for(i=2; i<=lp_half_order; i++) | |
| 69 | { | |
| 70 | double tmp, f_j_2, f_j_1, f_j; | |
| 71 | double val = lsp[2*i]; | |
| 72 | ||
| 73 | __asm__ volatile( | |
| 74 | "move %[p_f], %[p_fi] \n\t" | |
| 75 | "add.d %[val], %[val], %[val] \n\t" | |
| 76 | "addiu %[p_fi], 8 \n\t" | |
| 77 | "ldc1 %[f_j_1], 0(%[p_f]) \n\t" | |
| 78 | "ldc1 %[f_j], 8(%[p_f]) \n\t" | |
| 79 | "neg.d %[val], %[val] \n\t" | |
| 80 | "add.d %[tmp], %[f_j_1], %[f_j_1] \n\t" | |
| 81 | "madd.d %[tmp], %[tmp], %[f_j], %[val] \n\t" | |
| 82 | "addiu %[j], %[i], -2 \n\t" | |
| 83 | "ldc1 %[f_j_2], -8(%[p_f]) \n\t" | |
| 84 | "sdc1 %[tmp], 16(%[p_f]) \n\t" | |
| 85 | "beqz %[j], ff_lsp2polyf_lp_j_end%= \n\t" | |
| 86 | "ff_lsp2polyf_lp_j%=: \n\t" | |
| 87 | "add.d %[tmp], %[f_j], %[f_j_2] \n\t" | |
| 88 | "madd.d %[tmp], %[tmp], %[f_j_1], %[val] \n\t" | |
| 89 | "mov.d %[f_j], %[f_j_1] \n\t" | |
| 90 | "addiu %[j], -1 \n\t" | |
| 91 | "mov.d %[f_j_1], %[f_j_2] \n\t" | |
| 92 | "ldc1 %[f_j_2], -16(%[p_f]) \n\t" | |
| 93 | "sdc1 %[tmp], 8(%[p_f]) \n\t" | |
| 94 | "addiu %[p_f], -8 \n\t" | |
| 95 | "bgtz %[j], ff_lsp2polyf_lp_j%= \n\t" | |
| 96 | "ff_lsp2polyf_lp_j_end%=: \n\t" | |
| 97 | ||
| 98 | : [f_j_2]"=&f"(f_j_2), [f_j_1]"=&f"(f_j_1), [val]"+f"(val), | |
| 99 | [tmp]"=&f"(tmp), [f_j]"=&f"(f_j), [p_f]"+r"(p_f), | |
| 100 | [j]"+r"(j), [p_fi]"+r"(p_fi) | |
| 101 | : [i]"r"(i) | |
| 102 | : "memory" | |
| 103 | ); | |
| 104 | f[1] += val; | |
| 105 | } | |
| 106 | } | |
| 107 | #define ff_lsp2polyf ff_lsp2polyf_mips | |
| 108 | #endif /* HAVE_MIPSFPU && HAVE_INLINE_ASM */ | |
| 109 | #endif /* AVCODEC_LSP_MIPS_H */ |