2 * MLP DSP functions x86-optimized
3 * Copyright (c) 2009 Ramiro Polla
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/attributes.h"
23 #include "libavutil/x86/asm.h"
24 #include "libavcodec/mlpdsp.h"
25 #include "libavcodec/mlp.h"
27 #if HAVE_7REGS && HAVE_INLINE_ASM
29 extern char ff_mlp_firorder_8;
30 extern char ff_mlp_firorder_7;
31 extern char ff_mlp_firorder_6;
32 extern char ff_mlp_firorder_5;
33 extern char ff_mlp_firorder_4;
34 extern char ff_mlp_firorder_3;
35 extern char ff_mlp_firorder_2;
36 extern char ff_mlp_firorder_1;
37 extern char ff_mlp_firorder_0;
39 extern char ff_mlp_iirorder_4;
40 extern char ff_mlp_iirorder_3;
41 extern char ff_mlp_iirorder_2;
42 extern char ff_mlp_iirorder_1;
43 extern char ff_mlp_iirorder_0;
45 static const void *firtable[9] = { &ff_mlp_firorder_0, &ff_mlp_firorder_1,
46 &ff_mlp_firorder_2, &ff_mlp_firorder_3,
47 &ff_mlp_firorder_4, &ff_mlp_firorder_5,
48 &ff_mlp_firorder_6, &ff_mlp_firorder_7,
50 static const void *iirtable[5] = { &ff_mlp_iirorder_0, &ff_mlp_iirorder_1,
51 &ff_mlp_iirorder_2, &ff_mlp_iirorder_3,
56 #define MLPMUL(label, offset, offs, offc) \
57 LABEL_MANGLE(label)": \n\t" \
58 "movslq "offset"+"offs"(%0), %%rax\n\t" \
59 "movslq "offset"+"offc"(%1), %%rdx\n\t" \
60 "imul %%rdx, %%rax\n\t" \
61 "add %%rax, %%rsi\n\t"
63 #define FIRMULREG(label, offset, firc)\
64 LABEL_MANGLE(label)": \n\t" \
65 "movslq "#offset"(%0), %%rax\n\t" \
66 "imul %"#firc", %%rax\n\t" \
67 "add %%rax, %%rsi\n\t"
70 "xor %%rsi, %%rsi\n\t"
76 #define RESULT "%%rsi"
77 #define RESULT32 "%%esi"
79 #else /* if ARCH_X86_32 */
81 #define MLPMUL(label, offset, offs, offc) \
82 LABEL_MANGLE(label)": \n\t" \
83 "mov "offset"+"offs"(%0), %%eax\n\t" \
84 "imull "offset"+"offc"(%1) \n\t" \
85 "add %%eax , %%esi\n\t" \
86 "adc %%edx , %%ecx\n\t"
88 #define FIRMULREG(label, offset, firc) \
89 MLPMUL(label, #offset, "0", "0")
92 "xor %%esi, %%esi\n\t" \
93 "xor %%ecx, %%ecx\n\t"
96 "mov %%ecx, %%edx\n\t" \
97 "mov %%esi, %%eax\n\t" \
98 "movzbl %7 , %%ecx\n\t" \
99 "shrd %%cl, %%edx, %%eax\n\t" \
101 #define ACCUM "%%edx"
102 #define RESULT "%%eax"
103 #define RESULT32 "%%eax"
105 #endif /* !ARCH_X86_64 */
107 #define BINC AV_STRINGIFY(4* MAX_CHANNELS)
108 #define IOFFS AV_STRINGIFY(4*(MAX_FIR_ORDER + MAX_BLOCKSIZE))
109 #define IOFFC AV_STRINGIFY(4* MAX_FIR_ORDER)
111 #define FIRMUL(label, offset) MLPMUL(label, #offset, "0", "0")
112 #define IIRMUL(label, offset) MLPMUL(label, #offset, IOFFS, IOFFC)
114 static void mlp_filter_channel_x86(int32_t *state, const int32_t *coeff,
115 int firorder, int iirorder,
116 unsigned int filter_shift, int32_t mask,
117 int blocksize, int32_t *sample_buffer)
119 const void *firjump = firtable[firorder];
120 const void *iirjump = iirtable[iirorder];
122 blocksize = -blocksize;
128 FIRMUL (ff_mlp_firorder_8, 0x1c )
129 FIRMUL (ff_mlp_firorder_7, 0x18 )
130 FIRMUL (ff_mlp_firorder_6, 0x14 )
131 FIRMUL (ff_mlp_firorder_5, 0x10 )
132 FIRMUL (ff_mlp_firorder_4, 0x0c )
133 FIRMULREG(ff_mlp_firorder_3, 0x08,10)
134 FIRMULREG(ff_mlp_firorder_2, 0x04, 9)
135 FIRMULREG(ff_mlp_firorder_1, 0x00, 8)
136 LABEL_MANGLE(ff_mlp_firorder_0)":\n\t"
138 IIRMUL (ff_mlp_iirorder_4, 0x0c )
139 IIRMUL (ff_mlp_iirorder_3, 0x08 )
140 IIRMUL (ff_mlp_iirorder_2, 0x04 )
141 IIRMUL (ff_mlp_iirorder_1, 0x00 )
142 LABEL_MANGLE(ff_mlp_iirorder_0)":\n\t"
144 "mov "RESULT" ,"ACCUM" \n\t"
145 "add (%2) ,"RESULT" \n\t"
146 "and %4 ,"RESULT" \n\t"
148 "mov "RESULT32", (%0) \n\t"
149 "mov "RESULT32", (%2) \n\t"
150 "add $"BINC" , %2 \n\t"
151 "sub "ACCUM" ,"RESULT" \n\t"
152 "mov "RESULT32","IOFFS"(%0) \n\t"
157 /* 2*/"+r"(sample_buffer),
159 /* 3*/"+r"(blocksize)
160 : /* 4*/"r"((x86_reg)mask), /* 5*/"r"(firjump),
161 /* 6*/"r"(iirjump) , /* 7*/"c"(filter_shift)
162 , /* 8*/"r"((int64_t)coeff[0])
163 , /* 9*/"r"((int64_t)coeff[1])
164 , /*10*/"r"((int64_t)coeff[2])
165 : "rax", "rdx", "rsi"
166 #else /* ARCH_X86_32 */
167 /* 3*/"+m"(blocksize)
168 : /* 4*/"m"( mask), /* 5*/"m"(firjump),
169 /* 6*/"m"(iirjump) , /* 7*/"m"(filter_shift)
170 : "eax", "edx", "esi", "ecx"
171 #endif /* !ARCH_X86_64 */
175 #endif /* HAVE_7REGS && HAVE_INLINE_ASM */
177 av_cold void ff_mlpdsp_init_x86(MLPDSPContext *c)
179 #if HAVE_7REGS && HAVE_INLINE_ASM
180 c->mlp_filter_channel = mlp_filter_channel_x86;