/* * * Bluetooth low-complexity, subband codec (SBC) library * * Copyright (C) 2008-2010 Nokia Corporation * Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org> * Copyright (C) 2004-2005 Henryk Ploetz <henryk@ploetzli.ch> * Copyright (C) 2005-2006 Brad Midgley <bmidgley@xmission.com> * * * This library 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. * * This library 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 this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * */ #include <stdint.h> #include <limits.h> #include "sbc.h" #include "sbc_math.h" #include "sbc_tables.h" #include "sbc_primitives_mmx.h" /* * MMX optimizations */ #ifdef SBC_BUILD_WITH_MMX_SUPPORT static inline void sbc_analyze_four_mmx(const int16_t *in, int32_t *out, const FIXED_T *consts) { static const SBC_ALIGNED int32_t round_c[2] = { 1 << (SBC_PROTO_FIXED4_SCALE - 1), 1 << (SBC_PROTO_FIXED4_SCALE - 1), }; asm volatile ( "movq (%0), %%mm0\n" "movq 8(%0), %%mm1\n" "pmaddwd (%1), %%mm0\n" "pmaddwd 8(%1), %%mm1\n" "paddd (%2), %%mm0\n" "paddd (%2), %%mm1\n" "\n" "movq 16(%0), %%mm2\n" "movq 24(%0), %%mm3\n" "pmaddwd 16(%1), %%mm2\n" "pmaddwd 24(%1), %%mm3\n" "paddd %%mm2, %%mm0\n" "paddd %%mm3, %%mm1\n" "\n" "movq 32(%0), %%mm2\n" "movq 40(%0), %%mm3\n" "pmaddwd 32(%1), %%mm2\n" "pmaddwd 40(%1), %%mm3\n" "paddd %%mm2, %%mm0\n" "paddd %%mm3, %%mm1\n" "\n" "movq 48(%0), %%mm2\n" "movq 56(%0), %%mm3\n" "pmaddwd 48(%1), %%mm2\n" "pmaddwd 56(%1), %%mm3\n" "paddd %%mm2, %%mm0\n" "paddd %%mm3, %%mm1\n" "\n" "movq 64(%0), %%mm2\n" "movq 72(%0), %%mm3\n" "pmaddwd 64(%1), %%mm2\n" "pmaddwd 72(%1), %%mm3\n" "paddd %%mm2, %%mm0\n" "paddd %%mm3, %%mm1\n" "\n" "psrad %4, %%mm0\n" "psrad %4, %%mm1\n" "packssdw %%mm0, %%mm0\n" "packssdw %%mm1, %%mm1\n" "\n" "movq %%mm0, %%mm2\n" "pmaddwd 80(%1), %%mm0\n" "pmaddwd 88(%1), %%mm2\n" "\n" "movq %%mm1, %%mm3\n" "pmaddwd 96(%1), %%mm1\n" "pmaddwd 104(%1), %%mm3\n" "paddd %%mm1, %%mm0\n" "paddd %%mm3, %%mm2\n" "\n" "movq %%mm0, (%3)\n" "movq %%mm2, 8(%3)\n" : : "r" (in), "r" (consts), "r" (&round_c), "r" (out), "i" (SBC_PROTO_FIXED4_SCALE) : "memory"); } static inline void sbc_analyze_eight_mmx(const int16_t *in, int32_t *out, const FIXED_T *consts) { static const SBC_ALIGNED int32_t round_c[2] = { 1 << (SBC_PROTO_FIXED8_SCALE - 1), 1 << (SBC_PROTO_FIXED8_SCALE - 1), }; asm volatile ( "movq (%0), %%mm0\n" "movq 8(%0), %%mm1\n" "movq 16(%0), %%mm2\n" "movq 24(%0), %%mm3\n" "pmaddwd (%1), %%mm0\n" "pmaddwd 8(%1), %%mm1\n" "pmaddwd 16(%1), %%mm2\n" "pmaddwd 24(%1), %%mm3\n" "paddd (%2), %%mm0\n" "paddd (%2), %%mm1\n" "paddd (%2), %%mm2\n" "paddd (%2), %%mm3\n" "\n" "movq 32(%0), %%mm4\n" "movq 40(%0), %%mm5\n" "movq 48(%0), %%mm6\n" "movq 56(%0), %%mm7\n" "pmaddwd 32(%1), %%mm4\n" "pmaddwd 40(%1), %%mm5\n" "pmaddwd 48(%1), %%mm6\n" "pmaddwd 56(%1), %%mm7\n" "paddd %%mm4, %%mm0\n" "paddd %%mm5, %%mm1\n" "paddd %%mm6, %%mm2\n" "paddd %%mm7, %%mm3\n" "\n" "movq 64(%0), %%mm4\n" "movq 72(%0), %%mm5\n" "movq 80(%0), %%mm6\n" "movq 88(%0), %%mm7\n" "pmaddwd 64(%1), %%mm4\n" "pmaddwd 72(%1), %%mm5\n" "pmaddwd 80(%1), %%mm6\n" "pmaddwd 88(%1), %%mm7\n" "paddd %%mm4, %%mm0\n" "paddd %%mm5, %%mm1\n" "paddd %%mm6, %%mm2\n" "paddd %%mm7, %%mm3\n" "\n" "movq 96(%0), %%mm4\n" "movq 104(%0), %%mm5\n" "movq 112(%0), %%mm6\n" "movq 120(%0), %%mm7\n" "pmaddwd 96(%1), %%mm4\n" "pmaddwd 104(%1), %%mm5\n" "pmaddwd 112(%1), %%mm6\n" "pmaddwd 120(%1), %%mm7\n" "paddd %%mm4, %%mm0\n" "paddd %%mm5, %%mm1\n" "paddd %%mm6, %%mm2\n" "paddd %%mm7, %%mm3\n" "\n" "movq 128(%0), %%mm4\n" "movq 136(%0), %%mm5\n" "movq 144(%0), %%mm6\n" "movq 152(%0), %%mm7\n" "pmaddwd 128(%1), %%mm4\n" "pmaddwd 136(%1), %%mm5\n" "pmaddwd 144(%1), %%mm6\n" "pmaddwd 152(%1), %%mm7\n" "paddd %%mm4, %%mm0\n" "paddd %%mm5, %%mm1\n" "paddd %%mm6, %%mm2\n" "paddd %%mm7, %%mm3\n" "\n" "psrad %4, %%mm0\n" "psrad %4, %%mm1\n" "psrad %4, %%mm2\n" "psrad %4, %%mm3\n" "\n" "packssdw %%mm0, %%mm0\n" "packssdw %%mm1, %%mm1\n" "packssdw %%mm2, %%mm2\n" "packssdw %%mm3, %%mm3\n" "\n" "movq %%mm0, %%mm4\n" "movq %%mm0, %%mm5\n" "pmaddwd 160(%1), %%mm4\n" "pmaddwd 168(%1), %%mm5\n" "\n" "movq %%mm1, %%mm6\n" "movq %%mm1, %%mm7\n" "pmaddwd 192(%1), %%mm6\n" "pmaddwd 200(%1), %%mm7\n" "paddd %%mm6, %%mm4\n" "paddd %%mm7, %%mm5\n" "\n" "movq %%mm2, %%mm6\n" "movq %%mm2, %%mm7\n" "pmaddwd 224(%1), %%mm6\n" "pmaddwd 232(%1), %%mm7\n" "paddd %%mm6, %%mm4\n" "paddd %%mm7, %%mm5\n" "\n" "movq %%mm3, %%mm6\n" "movq %%mm3, %%mm7\n" "pmaddwd 256(%1), %%mm6\n" "pmaddwd 264(%1), %%mm7\n" "paddd %%mm6, %%mm4\n" "paddd %%mm7, %%mm5\n" "\n" "movq %%mm4, (%3)\n" "movq %%mm5, 8(%3)\n" "\n" "movq %%mm0, %%mm5\n" "pmaddwd 176(%1), %%mm0\n" "pmaddwd 184(%1), %%mm5\n" "\n" "movq %%mm1, %%mm7\n" "pmaddwd 208(%1), %%mm1\n" "pmaddwd 216(%1), %%mm7\n" "paddd %%mm1, %%mm0\n" "paddd %%mm7, %%mm5\n" "\n" "movq %%mm2, %%mm7\n" "pmaddwd 240(%1), %%mm2\n" "pmaddwd 248(%1), %%mm7\n" "paddd %%mm2, %%mm0\n" "paddd %%mm7, %%mm5\n" "\n" "movq %%mm3, %%mm7\n" "pmaddwd 272(%1), %%mm3\n" "pmaddwd 280(%1), %%mm7\n" "paddd %%mm3, %%mm0\n" "paddd %%mm7, %%mm5\n" "\n" "movq %%mm0, 16(%3)\n" "movq %%mm5, 24(%3)\n" : : "r" (in), "r" (consts), "r" (&round_c), "r" (out), "i" (SBC_PROTO_FIXED8_SCALE) : "memory"); } static inline void sbc_analyze_4b_4s_mmx(int16_t *x, int32_t *out, int out_stride) { /* Analyze blocks */ sbc_analyze_four_mmx(x + 12, out, analysis_consts_fixed4_simd_odd); out += out_stride; sbc_analyze_four_mmx(x + 8, out, analysis_consts_fixed4_simd_even); out += out_stride; sbc_analyze_four_mmx(x + 4, out, analysis_consts_fixed4_simd_odd); out += out_stride; sbc_analyze_four_mmx(x + 0, out, analysis_consts_fixed4_simd_even); asm volatile ("emms\n"); } static inline void sbc_analyze_4b_8s_mmx(int16_t *x, int32_t *out, int out_stride) { /* Analyze blocks */ sbc_analyze_eight_mmx(x + 24, out, analysis_consts_fixed8_simd_odd); out += out_stride; sbc_analyze_eight_mmx(x + 16, out, analysis_consts_fixed8_simd_even); out += out_stride; sbc_analyze_eight_mmx(x + 8, out, analysis_consts_fixed8_simd_odd); out += out_stride; sbc_analyze_eight_mmx(x + 0, out, analysis_consts_fixed8_simd_even); asm volatile ("emms\n"); } static void sbc_calc_scalefactors_mmx( int32_t sb_sample_f[16][2][8], uint32_t scale_factor[2][8], int blocks, int channels, int subbands) { static const SBC_ALIGNED int32_t consts[2] = { 1 << SCALE_OUT_BITS, 1 << SCALE_OUT_BITS, }; int ch, sb; intptr_t blk; for (ch = 0; ch < channels; ch++) { for (sb = 0; sb < subbands; sb += 2) { blk = (blocks - 1) * (((char *) &sb_sample_f[1][0][0] - (char *) &sb_sample_f[0][0][0])); asm volatile ( "movq (%4), %%mm0\n" "1:\n" "movq (%1, %0), %%mm1\n" "pxor %%mm2, %%mm2\n" "pcmpgtd %%mm2, %%mm1\n" "paddd (%1, %0), %%mm1\n" "pcmpgtd %%mm1, %%mm2\n" "pxor %%mm2, %%mm1\n" "por %%mm1, %%mm0\n" "sub %2, %0\n" "jns 1b\n" "movd %%mm0, %k0\n" "psrlq $32, %%mm0\n" "bsrl %k0, %k0\n" "subl %5, %k0\n" "movl %k0, (%3)\n" "movd %%mm0, %k0\n" "bsrl %k0, %k0\n" "subl %5, %k0\n" "movl %k0, 4(%3)\n" : "+r" (blk) : "r" (&sb_sample_f[0][ch][sb]), "i" ((char *) &sb_sample_f[1][0][0] - (char *) &sb_sample_f[0][0][0]), "r" (&scale_factor[ch][sb]), "r" (&consts), "i" (SCALE_OUT_BITS) : "memory"); } } asm volatile ("emms\n"); } static int check_mmx_support(void) { #ifdef __amd64__ return 1; /* We assume that all 64-bit processors have MMX support */ #else int cpuid_feature_information; asm volatile ( /* According to Intel manual, CPUID instruction is supported * if the value of ID bit (bit 21) in EFLAGS can be modified */ "pushf\n" "movl (%%esp), %0\n" "xorl $0x200000, (%%esp)\n" /* try to modify ID bit */ "popf\n" "pushf\n" "xorl (%%esp), %0\n" /* check if ID bit changed */ "jz 1f\n" "push %%eax\n" "push %%ebx\n" "push %%ecx\n" "mov $1, %%eax\n" "cpuid\n" "pop %%ecx\n" "pop %%ebx\n" "pop %%eax\n" "1:\n" "popf\n" : "=d" (cpuid_feature_information) : : "cc"); return cpuid_feature_information & (1 << 23); #endif } void sbc_init_primitives_mmx(struct sbc_encoder_state *state) { if (check_mmx_support()) { state->sbc_analyze_4b_4s = sbc_analyze_4b_4s_mmx; state->sbc_analyze_4b_8s = sbc_analyze_4b_8s_mmx; state->sbc_calc_scalefactors = sbc_calc_scalefactors_mmx; state->implementation_info = "MMX"; } } #endif