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116 lines
5.0 KiB
116 lines
5.0 KiB
/* |
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* Copyright (c) 2012 |
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* MIPS Technologies, Inc., California. |
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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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* 1. 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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* 2. 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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* 3. Neither the name of the MIPS Technologies, Inc., 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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* |
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* THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* Author: Nedeljko Babic (nbabic@mips.com) |
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* |
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* LSP routines for ACELP-based codecs optimized for MIPS |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* @file |
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* Reference: libavcodec/lsp.c |
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*/ |
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#ifndef AVCODEC_MIPS_LSP_MIPS_H |
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#define AVCODEC_MIPS_LSP_MIPS_H |
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#include "config.h" |
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#if HAVE_MIPSFPU && HAVE_INLINE_ASM |
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#if !HAVE_MIPS32R6 && !HAVE_MIPS64R6 |
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#include "libavutil/attributes.h" |
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#include "libavutil/mips/asmdefs.h" |
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static av_always_inline void lsp2polyf_mips(const double *lsp, double *f, int lp_half_order) |
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{ |
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int i, j = 0; |
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double * p_fi = f; |
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double * p_f = 0; |
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f[0] = 1.0; |
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f[1] = -2 * lsp[0]; |
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lsp -= 2; |
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for(i=2; i<=lp_half_order; i++) |
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{ |
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double tmp, f_j_2, f_j_1, f_j; |
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double val = lsp[2*i]; |
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__asm__ volatile( |
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"move %[p_f], %[p_fi] \n\t" |
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"add.d %[val], %[val], %[val] \n\t" |
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PTR_ADDIU "%[p_fi], 8 \n\t" |
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"ldc1 %[f_j_1], 0(%[p_f]) \n\t" |
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"ldc1 %[f_j], 8(%[p_f]) \n\t" |
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"neg.d %[val], %[val] \n\t" |
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"add.d %[tmp], %[f_j_1], %[f_j_1] \n\t" |
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"madd.d %[tmp], %[tmp], %[f_j], %[val] \n\t" |
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"addiu %[j], %[i], -2 \n\t" |
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"ldc1 %[f_j_2], -8(%[p_f]) \n\t" |
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"sdc1 %[tmp], 16(%[p_f]) \n\t" |
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"beqz %[j], lsp2polyf_lp_j_end%= \n\t" |
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"lsp2polyf_lp_j%=: \n\t" |
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"add.d %[tmp], %[f_j], %[f_j_2] \n\t" |
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"madd.d %[tmp], %[tmp], %[f_j_1], %[val] \n\t" |
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"mov.d %[f_j], %[f_j_1] \n\t" |
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"addiu %[j], -1 \n\t" |
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"mov.d %[f_j_1], %[f_j_2] \n\t" |
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"ldc1 %[f_j_2], -16(%[p_f]) \n\t" |
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"sdc1 %[tmp], 8(%[p_f]) \n\t" |
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PTR_ADDIU "%[p_f], -8 \n\t" |
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"bgtz %[j], lsp2polyf_lp_j%= \n\t" |
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"lsp2polyf_lp_j_end%=: \n\t" |
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: [f_j_2]"=&f"(f_j_2), [f_j_1]"=&f"(f_j_1), [val]"+f"(val), |
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[tmp]"=&f"(tmp), [f_j]"=&f"(f_j), [p_f]"+r"(p_f), |
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[j]"+r"(j), [p_fi]"+r"(p_fi) |
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: [i]"r"(i) |
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: "memory" |
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); |
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f[1] += val; |
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} |
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} |
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#define lsp2polyf lsp2polyf_mips |
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#endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */ |
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#endif /* HAVE_MIPSFPU && HAVE_INLINE_ASM */ |
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#endif /* AVCODEC_MIPS_LSP_MIPS_H */
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