/* * 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 fixed-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_FIXED_H #define AVCODEC_MIPS_COMPUTE_ANTIALIAS_FIXED_H #if HAVE_INLINE_ASM static void compute_antialias_mips_fixed(MPADecodeContext *s, GranuleDef *g) { int32_t *ptr, *csa; int n, i; int MAX_lo = 0xffffffff; /* we antialias only "long" bands */ if (g->block_type == 2) { if (!g->switch_point) return; /* XXX: check this for 8000Hz case */ n = 1; } else { n = SBLIMIT - 1; } ptr = g->sb_hybrid + 18; for(i = n;i > 0;i--) { int tmp0, tmp1, tmp2, tmp00, tmp11; int temp_reg1, temp_reg2, temp_reg3, temp_reg4, temp_reg5, temp_reg6; csa = &csa_table[0][0]; /** * instructions are scheduled to minimize pipeline stall. */ __asm__ volatile ( "lw %[tmp0], -1*4(%[ptr]) \n\t" "lw %[tmp1], 0*4(%[ptr]) \n\t" "lw %[temp_reg1], 0*4(%[csa]) \n\t" "lw %[temp_reg2], 2*4(%[csa]) \n\t" "add %[tmp2], %[tmp0], %[tmp1] \n\t" "lw %[temp_reg3], 3*4(%[csa]) \n\t" "mult $ac0, %[tmp2], %[temp_reg1] \n\t" "mult $ac1, %[tmp2], %[temp_reg1] \n\t" "lw %[tmp00], -2*4(%[ptr]) \n\t" "lw %[tmp11], 1*4(%[ptr]) \n\t" "lw %[temp_reg4], 4*4(%[csa]) \n\t" "mtlo %[MAX_lo], $ac0 \n\t" "mtlo $zero, $ac1 \n\t" "msub $ac0, %[tmp1], %[temp_reg2] \n\t" "madd $ac1, %[tmp0], %[temp_reg3] \n\t" "add %[tmp2], %[tmp00], %[tmp11] \n\t" "lw %[temp_reg5], 6*4(%[csa]) \n\t" "mult $ac2, %[tmp2], %[temp_reg4] \n\t" "mult $ac3, %[tmp2], %[temp_reg4] \n\t" "mfhi %[temp_reg1], $ac0 \n\t" "mfhi %[temp_reg2], $ac1 \n\t" "lw %[temp_reg6], 7*4(%[csa]) \n\t" "mtlo %[MAX_lo], $ac2 \n\t" "msub $ac2, %[tmp11], %[temp_reg5] \n\t" "mtlo $zero, $ac3 \n\t" "madd $ac3, %[tmp00], %[temp_reg6] \n\t" "sll %[temp_reg1], %[temp_reg1], 2 \n\t" "sw %[temp_reg1], -1*4(%[ptr]) \n\t" "mfhi %[temp_reg4], $ac2 \n\t" "sll %[temp_reg2], %[temp_reg2], 2 \n\t" "mfhi %[temp_reg5], $ac3 \n\t" "sw %[temp_reg2], 0*4(%[ptr]) \n\t" "lw %[tmp0], -3*4(%[ptr]) \n\t" "lw %[tmp1], 2*4(%[ptr]) \n\t" "lw %[temp_reg1], 8*4(%[csa]) \n\t" "sll %[temp_reg4], %[temp_reg4], 2 \n\t" "add %[tmp2], %[tmp0], %[tmp1] \n\t" "sll %[temp_reg5], %[temp_reg5], 2 \n\t" "mult $ac0, %[tmp2], %[temp_reg1] \n\t" "mult $ac1, %[tmp2], %[temp_reg1] \n\t" "sw %[temp_reg4], -2*4(%[ptr]) \n\t" "sw %[temp_reg5], 1*4(%[ptr]) \n\t" "lw %[temp_reg2], 10*4(%[csa]) \n\t" "mtlo %[MAX_lo], $ac0 \n\t" "lw %[temp_reg3], 11*4(%[csa]) \n\t" "msub $ac0, %[tmp1], %[temp_reg2] \n\t" "mtlo $zero, $ac1 \n\t" "madd $ac1, %[tmp0], %[temp_reg3] \n\t" "lw %[tmp00], -4*4(%[ptr]) \n\t" "lw %[tmp11], 3*4(%[ptr]) \n\t" "mfhi %[temp_reg1], $ac0 \n\t" "lw %[temp_reg4], 12*4(%[csa]) \n\t" "mfhi %[temp_reg2], $ac1 \n\t" "add %[tmp2], %[tmp00], %[tmp11] \n\t" "mult $ac2, %[tmp2], %[temp_reg4] \n\t" "mult $ac3, %[tmp2], %[temp_reg4] \n\t" "lw %[temp_reg5], 14*4(%[csa]) \n\t" "lw %[temp_reg6], 15*4(%[csa]) \n\t" "sll %[temp_reg1], %[temp_reg1], 2 \n\t" "mtlo %[MAX_lo], $ac2 \n\t" "msub $ac2, %[tmp11], %[temp_reg5] \n\t" "mtlo $zero, $ac3 \n\t" "madd $ac3, %[tmp00], %[temp_reg6] \n\t" "sll %[temp_reg2], %[temp_reg2], 2 \n\t" "sw %[temp_reg1], -3*4(%[ptr]) \n\t" "mfhi %[temp_reg4], $ac2 \n\t" "sw %[temp_reg2], 2*4(%[ptr]) \n\t" "mfhi %[temp_reg5], $ac3 \n\t" "lw %[tmp0], -5*4(%[ptr]) \n\t" "lw %[tmp1], 4*4(%[ptr]) \n\t" "lw %[temp_reg1], 16*4(%[csa]) \n\t" "lw %[temp_reg2], 18*4(%[csa]) \n\t" "add %[tmp2], %[tmp0], %[tmp1] \n\t" "lw %[temp_reg3], 19*4(%[csa]) \n\t" "mult $ac0, %[tmp2], %[temp_reg1] \n\t" "mult $ac1, %[tmp2], %[temp_reg1] \n\t" "sll %[temp_reg4], %[temp_reg4], 2 \n\t" "sll %[temp_reg5], %[temp_reg5], 2 \n\t" "sw %[temp_reg4], -4*4(%[ptr]) \n\t" "mtlo %[MAX_lo], $ac0 \n\t" "msub $ac0, %[tmp1], %[temp_reg2] \n\t" "mtlo $zero, $ac1 \n\t" "madd $ac1, %[tmp0], %[temp_reg3] \n\t" "sw %[temp_reg5], 3*4(%[ptr]) \n\t" "lw %[tmp00], -6*4(%[ptr]) \n\t" "mfhi %[temp_reg1], $ac0 \n\t" "lw %[tmp11], 5*4(%[ptr]) \n\t" "mfhi %[temp_reg2], $ac1 \n\t" "lw %[temp_reg4], 20*4(%[csa]) \n\t" "add %[tmp2], %[tmp00], %[tmp11] \n\t" "lw %[temp_reg5], 22*4(%[csa]) \n\t" "mult $ac2, %[tmp2], %[temp_reg4] \n\t" "mult $ac3, %[tmp2], %[temp_reg4] \n\t" "lw %[temp_reg6], 23*4(%[csa]) \n\t" "sll %[temp_reg1], %[temp_reg1], 2 \n\t" "sll %[temp_reg2], %[temp_reg2], 2 \n\t" "mtlo %[MAX_lo], $ac2 \n\t" "msub $ac2, %[tmp11], %[temp_reg5] \n\t" "mtlo $zero, $ac3 \n\t" "madd $ac3, %[tmp00], %[temp_reg6] \n\t" "sw %[temp_reg1], -5*4(%[ptr]) \n\t" "sw %[temp_reg2], 4*4(%[ptr]) \n\t" "mfhi %[temp_reg4], $ac2 \n\t" "lw %[tmp0], -7*4(%[ptr]) \n\t" "mfhi %[temp_reg5], $ac3 \n\t" "lw %[tmp1], 6*4(%[ptr]) \n\t" "lw %[temp_reg1], 24*4(%[csa]) \n\t" "lw %[temp_reg2], 26*4(%[csa]) \n\t" "add %[tmp2], %[tmp0], %[tmp1] \n\t" "lw %[temp_reg3], 27*4(%[csa]) \n\t" "mult $ac0, %[tmp2], %[temp_reg1] \n\t" "mult $ac1, %[tmp2], %[temp_reg1] \n\t" "sll %[temp_reg4], %[temp_reg4], 2 \n\t" "sll %[temp_reg5], %[temp_reg5], 2 \n\t" "sw %[temp_reg4], -6*4(%[ptr]) \n\t" "mtlo %[MAX_lo], $ac0 \n\t" "msub $ac0, %[tmp1], %[temp_reg2] \n\t" "mtlo $zero, $ac1 \n\t" "madd $ac1, %[tmp0], %[temp_reg3] \n\t" "sw %[temp_reg5], 5*4(%[ptr]) \n\t" "lw %[tmp00], -8*4(%[ptr]) \n\t" "mfhi %[temp_reg1], $ac0 \n\t" "lw %[tmp11], 7*4(%[ptr]) \n\t" "mfhi %[temp_reg2], $ac1 \n\t" "lw %[temp_reg4], 28*4(%[csa]) \n\t" "add %[tmp2], %[tmp00], %[tmp11] \n\t" "lw %[temp_reg5], 30*4(%[csa]) \n\t" "mult $ac2, %[tmp2], %[temp_reg4] \n\t" "mult $ac3, %[tmp2], %[temp_reg4] \n\t" "lw %[temp_reg6], 31*4(%[csa]) \n\t" "sll %[temp_reg1], %[temp_reg1], 2 \n\t" "sll %[temp_reg2], %[temp_reg2], 2 \n\t" "mtlo %[MAX_lo], $ac2 \n\t" "msub $ac2, %[tmp11], %[temp_reg5] \n\t" "mtlo $zero, $ac3 \n\t" "madd $ac3, %[tmp00], %[temp_reg6] \n\t" "sw %[temp_reg1], -7*4(%[ptr]) \n\t" "sw %[temp_reg2], 6*4(%[ptr]) \n\t" "mfhi %[temp_reg4], $ac2 \n\t" "mfhi %[temp_reg5], $ac3 \n\t" "sll %[temp_reg4], %[temp_reg4], 2 \n\t" "sll %[temp_reg5], %[temp_reg5], 2 \n\t" "sw %[temp_reg4], -8*4(%[ptr]) \n\t" "sw %[temp_reg5], 7*4(%[ptr]) \n\t" : [tmp0] "=&r" (tmp0), [tmp1] "=&r" (tmp1), [tmp2] "=&r" (tmp2), [tmp00] "=&r" (tmp00), [tmp11] "=&r" (tmp11), [temp_reg1] "=&r" (temp_reg1), [temp_reg2] "=&r" (temp_reg2), [temp_reg3] "=&r" (temp_reg3), [temp_reg4] "=&r" (temp_reg4), [temp_reg5] "=&r" (temp_reg5), [temp_reg6] "=&r" (temp_reg6) : [csa] "r" (csa), [ptr] "r" (ptr), [MAX_lo] "r" (MAX_lo) : "memory", "hi", "lo", "$ac1hi", "$ac1lo", "$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo" ); ptr += 18; } } #define compute_antialias compute_antialias_mips_fixed #endif /* HAVE_INLINE_ASM */ #endif /* AVCODEC_MIPS_COMPUTE_ANTIALIAS_FIXED_H */