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1 | /* |
2 | * MLP DSP functions x86-optimized | |
3 | * Copyright (c) 2009 Ramiro Polla | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
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. | |
11 | * | |
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. | |
16 | * | |
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 | |
20 | */ | |
21 | ||
22 | #include "libavutil/attributes.h" | |
23 | #include "libavutil/cpu.h" | |
24 | #include "libavutil/x86/asm.h" | |
25 | #include "libavutil/x86/cpu.h" | |
26 | #include "libavcodec/mlpdsp.h" | |
27 | #include "libavcodec/mlp.h" | |
28 | ||
29 | #if HAVE_7REGS && HAVE_INLINE_ASM && HAVE_INLINE_ASM_NONLOCAL_LABELS | |
30 | ||
31 | extern char ff_mlp_firorder_8; | |
32 | extern char ff_mlp_firorder_7; | |
33 | extern char ff_mlp_firorder_6; | |
34 | extern char ff_mlp_firorder_5; | |
35 | extern char ff_mlp_firorder_4; | |
36 | extern char ff_mlp_firorder_3; | |
37 | extern char ff_mlp_firorder_2; | |
38 | extern char ff_mlp_firorder_1; | |
39 | extern char ff_mlp_firorder_0; | |
40 | ||
41 | extern char ff_mlp_iirorder_4; | |
42 | extern char ff_mlp_iirorder_3; | |
43 | extern char ff_mlp_iirorder_2; | |
44 | extern char ff_mlp_iirorder_1; | |
45 | extern char ff_mlp_iirorder_0; | |
46 | ||
47 | static const void * const firtable[9] = { &ff_mlp_firorder_0, &ff_mlp_firorder_1, | |
48 | &ff_mlp_firorder_2, &ff_mlp_firorder_3, | |
49 | &ff_mlp_firorder_4, &ff_mlp_firorder_5, | |
50 | &ff_mlp_firorder_6, &ff_mlp_firorder_7, | |
51 | &ff_mlp_firorder_8 }; | |
52 | static const void * const iirtable[5] = { &ff_mlp_iirorder_0, &ff_mlp_iirorder_1, | |
53 | &ff_mlp_iirorder_2, &ff_mlp_iirorder_3, | |
54 | &ff_mlp_iirorder_4 }; | |
55 | ||
56 | #if ARCH_X86_64 | |
57 | ||
58 | #define MLPMUL(label, offset, offs, offc) \ | |
59 | LABEL_MANGLE(label)": \n\t" \ | |
60 | "movslq "offset"+"offs"(%0), %%rax\n\t" \ | |
61 | "movslq "offset"+"offc"(%1), %%rdx\n\t" \ | |
62 | "imul %%rdx, %%rax\n\t" \ | |
63 | "add %%rax, %%rsi\n\t" | |
64 | ||
65 | #define FIRMULREG(label, offset, firc)\ | |
66 | LABEL_MANGLE(label)": \n\t" \ | |
67 | "movslq "#offset"(%0), %%rax\n\t" \ | |
68 | "imul %"#firc", %%rax\n\t" \ | |
69 | "add %%rax, %%rsi\n\t" | |
70 | ||
71 | #define CLEAR_ACCUM \ | |
72 | "xor %%rsi, %%rsi\n\t" | |
73 | ||
74 | #define SHIFT_ACCUM \ | |
75 | "shr %%cl, %%rsi\n\t" | |
76 | ||
77 | #define ACCUM "%%rdx" | |
78 | #define RESULT "%%rsi" | |
79 | #define RESULT32 "%%esi" | |
80 | ||
81 | #else /* if ARCH_X86_32 */ | |
82 | ||
83 | #define MLPMUL(label, offset, offs, offc) \ | |
84 | LABEL_MANGLE(label)": \n\t" \ | |
85 | "mov "offset"+"offs"(%0), %%eax\n\t" \ | |
86 | "imull "offset"+"offc"(%1) \n\t" \ | |
87 | "add %%eax , %%esi\n\t" \ | |
88 | "adc %%edx , %%ecx\n\t" | |
89 | ||
90 | #define FIRMULREG(label, offset, firc) \ | |
91 | MLPMUL(label, #offset, "0", "0") | |
92 | ||
93 | #define CLEAR_ACCUM \ | |
94 | "xor %%esi, %%esi\n\t" \ | |
95 | "xor %%ecx, %%ecx\n\t" | |
96 | ||
97 | #define SHIFT_ACCUM \ | |
98 | "mov %%ecx, %%edx\n\t" \ | |
99 | "mov %%esi, %%eax\n\t" \ | |
100 | "movzbl %7 , %%ecx\n\t" \ | |
101 | "shrd %%cl, %%edx, %%eax\n\t" \ | |
102 | ||
103 | #define ACCUM "%%edx" | |
104 | #define RESULT "%%eax" | |
105 | #define RESULT32 "%%eax" | |
106 | ||
107 | #endif /* !ARCH_X86_64 */ | |
108 | ||
109 | #define BINC AV_STRINGIFY(4* MAX_CHANNELS) | |
110 | #define IOFFS AV_STRINGIFY(4*(MAX_FIR_ORDER + MAX_BLOCKSIZE)) | |
111 | #define IOFFC AV_STRINGIFY(4* MAX_FIR_ORDER) | |
112 | ||
113 | #define FIRMUL(label, offset) MLPMUL(label, #offset, "0", "0") | |
114 | #define IIRMUL(label, offset) MLPMUL(label, #offset, IOFFS, IOFFC) | |
115 | ||
116 | static void mlp_filter_channel_x86(int32_t *state, const int32_t *coeff, | |
117 | int firorder, int iirorder, | |
118 | unsigned int filter_shift, int32_t mask, | |
119 | int blocksize, int32_t *sample_buffer) | |
120 | { | |
121 | const void *firjump = firtable[firorder]; | |
122 | const void *iirjump = iirtable[iirorder]; | |
123 | ||
124 | blocksize = -blocksize; | |
125 | ||
126 | __asm__ volatile( | |
127 | "1: \n\t" | |
128 | CLEAR_ACCUM | |
129 | "jmp *%5 \n\t" | |
130 | FIRMUL (ff_mlp_firorder_8, 0x1c ) | |
131 | FIRMUL (ff_mlp_firorder_7, 0x18 ) | |
132 | FIRMUL (ff_mlp_firorder_6, 0x14 ) | |
133 | FIRMUL (ff_mlp_firorder_5, 0x10 ) | |
134 | FIRMUL (ff_mlp_firorder_4, 0x0c ) | |
135 | FIRMULREG(ff_mlp_firorder_3, 0x08,10) | |
136 | FIRMULREG(ff_mlp_firorder_2, 0x04, 9) | |
137 | FIRMULREG(ff_mlp_firorder_1, 0x00, 8) | |
138 | LABEL_MANGLE(ff_mlp_firorder_0)":\n\t" | |
139 | "jmp *%6 \n\t" | |
140 | IIRMUL (ff_mlp_iirorder_4, 0x0c ) | |
141 | IIRMUL (ff_mlp_iirorder_3, 0x08 ) | |
142 | IIRMUL (ff_mlp_iirorder_2, 0x04 ) | |
143 | IIRMUL (ff_mlp_iirorder_1, 0x00 ) | |
144 | LABEL_MANGLE(ff_mlp_iirorder_0)":\n\t" | |
145 | SHIFT_ACCUM | |
146 | "mov "RESULT" ,"ACCUM" \n\t" | |
147 | "add (%2) ,"RESULT" \n\t" | |
148 | "and %4 ,"RESULT" \n\t" | |
149 | "sub $4 , %0 \n\t" | |
150 | "mov "RESULT32", (%0) \n\t" | |
151 | "mov "RESULT32", (%2) \n\t" | |
152 | "add $"BINC" , %2 \n\t" | |
153 | "sub "ACCUM" ,"RESULT" \n\t" | |
154 | "mov "RESULT32","IOFFS"(%0) \n\t" | |
155 | "incl %3 \n\t" | |
156 | "js 1b \n\t" | |
157 | : /* 0*/"+r"(state), | |
158 | /* 1*/"+r"(coeff), | |
159 | /* 2*/"+r"(sample_buffer), | |
160 | #if ARCH_X86_64 | |
161 | /* 3*/"+r"(blocksize) | |
162 | : /* 4*/"r"((x86_reg)mask), /* 5*/"r"(firjump), | |
163 | /* 6*/"r"(iirjump) , /* 7*/"c"(filter_shift) | |
164 | , /* 8*/"r"((int64_t)coeff[0]) | |
165 | , /* 9*/"r"((int64_t)coeff[1]) | |
166 | , /*10*/"r"((int64_t)coeff[2]) | |
167 | : "rax", "rdx", "rsi" | |
168 | #else /* ARCH_X86_32 */ | |
169 | /* 3*/"+m"(blocksize) | |
170 | : /* 4*/"m"( mask), /* 5*/"m"(firjump), | |
171 | /* 6*/"m"(iirjump) , /* 7*/"m"(filter_shift) | |
172 | : "eax", "edx", "esi", "ecx" | |
173 | #endif /* !ARCH_X86_64 */ | |
174 | ); | |
175 | } | |
176 | ||
177 | #endif /* HAVE_7REGS && HAVE_INLINE_ASM */ | |
178 | ||
179 | av_cold void ff_mlpdsp_init_x86(MLPDSPContext *c) | |
180 | { | |
181 | #if HAVE_7REGS && HAVE_INLINE_ASM && HAVE_INLINE_ASM_NONLOCAL_LABELS | |
182 | int cpu_flags = av_get_cpu_flags(); | |
183 | if (INLINE_MMX(cpu_flags)) | |
184 | c->mlp_filter_channel = mlp_filter_channel_x86; | |
185 | #endif | |
186 | } |