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186 lines
10 KiB
186 lines
10 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: Bojan Zivkovic (bojan@mips.com) |
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* |
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* Compute antialias function optimised for MIPS floating-point architecture |
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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/mpegaudiodec.c |
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*/ |
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#ifndef AVCODEC_MIPS_COMPUTE_ANTIALIAS_FLOAT_H |
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#define AVCODEC_MIPS_COMPUTE_ANTIALIAS_FLOAT_H |
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#include "libavutil/mips/asmdefs.h" |
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#if HAVE_INLINE_ASM |
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#if !HAVE_MIPS32R6 && !HAVE_MIPS64R6 |
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static void compute_antialias_mips_float(MPADecodeContext *s, |
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GranuleDef *g) |
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{ |
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float *ptr, *ptr_end; |
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float *csa = &csa_table[0][0]; |
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/* temporary variables */ |
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float in1, in2, in3, in4, in5, in6, in7, in8; |
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float out1, out2, out3, out4; |
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ptr = g->sb_hybrid + 18; |
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/* we antialias only "long" bands */ |
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if (g->block_type == 2) { |
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if (!g->switch_point) |
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return; |
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/* XXX: check this for 8000Hz case */ |
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ptr_end = ptr + 18; |
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} else { |
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ptr_end = ptr + 558; |
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} |
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/** |
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* instructions are scheduled to minimize pipeline stall. |
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*/ |
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__asm__ volatile ( |
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"compute_antialias_float_loop%=: \t\n" |
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"lwc1 %[in1], -1*4(%[ptr]) \t\n" |
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"lwc1 %[in2], 0(%[csa]) \t\n" |
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"lwc1 %[in3], 1*4(%[csa]) \t\n" |
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"lwc1 %[in4], 0(%[ptr]) \t\n" |
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"lwc1 %[in5], -2*4(%[ptr]) \t\n" |
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"lwc1 %[in6], 4*4(%[csa]) \t\n" |
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"mul.s %[out1], %[in1], %[in2] \t\n" |
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"mul.s %[out2], %[in1], %[in3] \t\n" |
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"lwc1 %[in7], 5*4(%[csa]) \t\n" |
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"lwc1 %[in8], 1*4(%[ptr]) \t\n" |
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"nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n" |
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"madd.s %[out2], %[out2], %[in2], %[in4] \t\n" |
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"mul.s %[out3], %[in5], %[in6] \t\n" |
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"mul.s %[out4], %[in5], %[in7] \t\n" |
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"lwc1 %[in1], -3*4(%[ptr]) \t\n" |
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"swc1 %[out1], -1*4(%[ptr]) \t\n" |
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"swc1 %[out2], 0(%[ptr]) \t\n" |
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"nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n" |
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"madd.s %[out4], %[out4], %[in6], %[in8] \t\n" |
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"lwc1 %[in2], 8*4(%[csa]) \t\n" |
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"swc1 %[out3], -2*4(%[ptr]) \t\n" |
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"swc1 %[out4], 1*4(%[ptr]) \t\n" |
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"lwc1 %[in3], 9*4(%[csa]) \t\n" |
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"lwc1 %[in4], 2*4(%[ptr]) \t\n" |
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"mul.s %[out1], %[in1], %[in2] \t\n" |
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"lwc1 %[in5], -4*4(%[ptr]) \t\n" |
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"lwc1 %[in6], 12*4(%[csa]) \t\n" |
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"mul.s %[out2], %[in1], %[in3] \t\n" |
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"lwc1 %[in7], 13*4(%[csa]) \t\n" |
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"nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n" |
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"lwc1 %[in8], 3*4(%[ptr]) \t\n" |
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"mul.s %[out3], %[in5], %[in6] \t\n" |
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"madd.s %[out2], %[out2], %[in2], %[in4] \t\n" |
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"mul.s %[out4], %[in5], %[in7] \t\n" |
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"swc1 %[out1], -3*4(%[ptr]) \t\n" |
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"lwc1 %[in1], -5*4(%[ptr]) \t\n" |
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"nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n" |
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"swc1 %[out2], 2*4(%[ptr]) \t\n" |
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"madd.s %[out4], %[out4], %[in6], %[in8] \t\n" |
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"lwc1 %[in2], 16*4(%[csa]) \t\n" |
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"lwc1 %[in3], 17*4(%[csa]) \t\n" |
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"swc1 %[out3], -4*4(%[ptr]) \t\n" |
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"lwc1 %[in4], 4*4(%[ptr]) \t\n" |
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"swc1 %[out4], 3*4(%[ptr]) \t\n" |
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"mul.s %[out1], %[in1], %[in2] \t\n" |
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"mul.s %[out2], %[in1], %[in3] \t\n" |
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"lwc1 %[in5], -6*4(%[ptr]) \t\n" |
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"lwc1 %[in6], 20*4(%[csa]) \t\n" |
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"lwc1 %[in7], 21*4(%[csa]) \t\n" |
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"nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n" |
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"madd.s %[out2], %[out2], %[in2], %[in4] \t\n" |
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"lwc1 %[in8], 5*4(%[ptr]) \t\n" |
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"mul.s %[out3], %[in5], %[in6] \t\n" |
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"mul.s %[out4], %[in5], %[in7] \t\n" |
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"swc1 %[out1], -5*4(%[ptr]) \t\n" |
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"swc1 %[out2], 4*4(%[ptr]) \t\n" |
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"lwc1 %[in1], -7*4(%[ptr]) \t\n" |
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"nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n" |
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"madd.s %[out4], %[out4], %[in6], %[in8] \t\n" |
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"lwc1 %[in2], 24*4(%[csa]) \t\n" |
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"lwc1 %[in3], 25*4(%[csa]) \t\n" |
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"lwc1 %[in4], 6*4(%[ptr]) \t\n" |
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"swc1 %[out3], -6*4(%[ptr]) \t\n" |
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"swc1 %[out4], 5*4(%[ptr]) \t\n" |
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"mul.s %[out1], %[in1], %[in2] \t\n" |
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"lwc1 %[in5], -8*4(%[ptr]) \t\n" |
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"mul.s %[out2], %[in1], %[in3] \t\n" |
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"lwc1 %[in6], 28*4(%[csa]) \t\n" |
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"lwc1 %[in7], 29*4(%[csa]) \t\n" |
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"nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n" |
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"lwc1 %[in8], 7*4(%[ptr]) \t\n" |
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"madd.s %[out2], %[out2], %[in2], %[in4] \t\n" |
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"mul.s %[out3], %[in5], %[in6] \t\n" |
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"mul.s %[out4], %[in5], %[in7] \t\n" |
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"swc1 %[out1], -7*4(%[ptr]) \t\n" |
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"swc1 %[out2], 6*4(%[ptr]) \t\n" |
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PTR_ADDIU "%[ptr],%[ptr], 72 \t\n" |
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"nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n" |
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"madd.s %[out4], %[out4], %[in6], %[in8] \t\n" |
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"swc1 %[out3], -26*4(%[ptr]) \t\n" |
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"swc1 %[out4], -11*4(%[ptr]) \t\n" |
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"bne %[ptr], %[ptr_end], compute_antialias_float_loop%= \t\n" |
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: [ptr] "+r" (ptr), |
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[in1] "=&f" (in1), [in2] "=&f" (in2), |
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[in3] "=&f" (in3), [in4] "=&f" (in4), |
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[in5] "=&f" (in5), [in6] "=&f" (in6), |
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[in7] "=&f" (in7), [in8] "=&f" (in8), |
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[out1] "=&f" (out1), [out2] "=&f" (out2), |
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[out3] "=&f" (out3), [out4] "=&f" (out4) |
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: [csa] "r" (csa), [ptr_end] "r" (ptr_end) |
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: "memory" |
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); |
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} |
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#define compute_antialias compute_antialias_mips_float |
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#endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */ |
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#endif /* HAVE_INLINE_ASM */ |
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#endif /* AVCODEC_MIPS_COMPUTE_ANTIALIAS_FLOAT_H */
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