/* * Copyright (c) 2012 * MIPS Technologies, Inc., California. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Author: Bojan Zivkovic (bojan@mips.com) * * Compute antialias function optimised for MIPS floating-point architecture * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * Reference: libavcodec/mpegaudiodec.c */ #ifndef AVCODEC_MIPS_COMPUTE_ANTIALIAS_FLOAT_H #define AVCODEC_MIPS_COMPUTE_ANTIALIAS_FLOAT_H #include "libavutil/mips/asmdefs.h" #if HAVE_INLINE_ASM #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6 static void compute_antialias_mips_float(MPADecodeContext *s, GranuleDef *g) { float *ptr, *ptr_end; float *csa = &csa_table[0][0]; /* temporary variables */ float in1, in2, in3, in4, in5, in6, in7, in8; float out1, out2, out3, out4; ptr = g->sb_hybrid + 18; /* we antialias only "long" bands */ if (g->block_type == 2) { if (!g->switch_point) return; /* XXX: check this for 8000Hz case */ ptr_end = ptr + 18; } else { ptr_end = ptr + 558; } /** * instructions are scheduled to minimize pipeline stall. */ __asm__ volatile ( "compute_antialias_float_loop%=: \t\n" "lwc1 %[in1], -1*4(%[ptr]) \t\n" "lwc1 %[in2], 0(%[csa]) \t\n" "lwc1 %[in3], 1*4(%[csa]) \t\n" "lwc1 %[in4], 0(%[ptr]) \t\n" "lwc1 %[in5], -2*4(%[ptr]) \t\n" "lwc1 %[in6], 4*4(%[csa]) \t\n" "mul.s %[out1], %[in1], %[in2] \t\n" "mul.s %[out2], %[in1], %[in3] \t\n" "lwc1 %[in7], 5*4(%[csa]) \t\n" "lwc1 %[in8], 1*4(%[ptr]) \t\n" "nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n" "madd.s %[out2], %[out2], %[in2], %[in4] \t\n" "mul.s %[out3], %[in5], %[in6] \t\n" "mul.s %[out4], %[in5], %[in7] \t\n" "lwc1 %[in1], -3*4(%[ptr]) \t\n" "swc1 %[out1], -1*4(%[ptr]) \t\n" "swc1 %[out2], 0(%[ptr]) \t\n" "nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n" "madd.s %[out4], %[out4], %[in6], %[in8] \t\n" "lwc1 %[in2], 8*4(%[csa]) \t\n" "swc1 %[out3], -2*4(%[ptr]) \t\n" "swc1 %[out4], 1*4(%[ptr]) \t\n" "lwc1 %[in3], 9*4(%[csa]) \t\n" "lwc1 %[in4], 2*4(%[ptr]) \t\n" "mul.s %[out1], %[in1], %[in2] \t\n" "lwc1 %[in5], -4*4(%[ptr]) \t\n" "lwc1 %[in6], 12*4(%[csa]) \t\n" "mul.s %[out2], %[in1], %[in3] \t\n" "lwc1 %[in7], 13*4(%[csa]) \t\n" "nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n" "lwc1 %[in8], 3*4(%[ptr]) \t\n" "mul.s %[out3], %[in5], %[in6] \t\n" "madd.s %[out2], %[out2], %[in2], %[in4] \t\n" "mul.s %[out4], %[in5], %[in7] \t\n" "swc1 %[out1], -3*4(%[ptr]) \t\n" "lwc1 %[in1], -5*4(%[ptr]) \t\n" "nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n" "swc1 %[out2], 2*4(%[ptr]) \t\n" "madd.s %[out4], %[out4], %[in6], %[in8] \t\n" "lwc1 %[in2], 16*4(%[csa]) \t\n" "lwc1 %[in3], 17*4(%[csa]) \t\n" "swc1 %[out3], -4*4(%[ptr]) \t\n" "lwc1 %[in4], 4*4(%[ptr]) \t\n" "swc1 %[out4], 3*4(%[ptr]) \t\n" "mul.s %[out1], %[in1], %[in2] \t\n" "mul.s %[out2], %[in1], %[in3] \t\n" "lwc1 %[in5], -6*4(%[ptr]) \t\n" "lwc1 %[in6], 20*4(%[csa]) \t\n" "lwc1 %[in7], 21*4(%[csa]) \t\n" "nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n" "madd.s %[out2], %[out2], %[in2], %[in4] \t\n" "lwc1 %[in8], 5*4(%[ptr]) \t\n" "mul.s %[out3], %[in5], %[in6] \t\n" "mul.s %[out4], %[in5], %[in7] \t\n" "swc1 %[out1], -5*4(%[ptr]) \t\n" "swc1 %[out2], 4*4(%[ptr]) \t\n" "lwc1 %[in1], -7*4(%[ptr]) \t\n" "nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n" "madd.s %[out4], %[out4], %[in6], %[in8] \t\n" "lwc1 %[in2], 24*4(%[csa]) \t\n" "lwc1 %[in3], 25*4(%[csa]) \t\n" "lwc1 %[in4], 6*4(%[ptr]) \t\n" "swc1 %[out3], -6*4(%[ptr]) \t\n" "swc1 %[out4], 5*4(%[ptr]) \t\n" "mul.s %[out1], %[in1], %[in2] \t\n" "lwc1 %[in5], -8*4(%[ptr]) \t\n" "mul.s %[out2], %[in1], %[in3] \t\n" "lwc1 %[in6], 28*4(%[csa]) \t\n" "lwc1 %[in7], 29*4(%[csa]) \t\n" "nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n" "lwc1 %[in8], 7*4(%[ptr]) \t\n" "madd.s %[out2], %[out2], %[in2], %[in4] \t\n" "mul.s %[out3], %[in5], %[in6] \t\n" "mul.s %[out4], %[in5], %[in7] \t\n" "swc1 %[out1], -7*4(%[ptr]) \t\n" "swc1 %[out2], 6*4(%[ptr]) \t\n" PTR_ADDIU "%[ptr],%[ptr], 72 \t\n" "nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n" "madd.s %[out4], %[out4], %[in6], %[in8] \t\n" "swc1 %[out3], -26*4(%[ptr]) \t\n" "swc1 %[out4], -11*4(%[ptr]) \t\n" "bne %[ptr], %[ptr_end], compute_antialias_float_loop%= \t\n" : [ptr] "+r" (ptr), [in1] "=&f" (in1), [in2] "=&f" (in2), [in3] "=&f" (in3), [in4] "=&f" (in4), [in5] "=&f" (in5), [in6] "=&f" (in6), [in7] "=&f" (in7), [in8] "=&f" (in8), [out1] "=&f" (out1), [out2] "=&f" (out2), [out3] "=&f" (out3), [out4] "=&f" (out4) : [csa] "r" (csa), [ptr_end] "r" (ptr_end) : "memory" ); } #define compute_antialias compute_antialias_mips_float #endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */ #endif /* HAVE_INLINE_ASM */ #endif /* AVCODEC_MIPS_COMPUTE_ANTIALIAS_FLOAT_H */