PipeWire: cpu.h Source File

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cpu.h
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1/* Simple Plugin API */
2/* SPDX-FileCopyrightText: Copyright © 2018 Wim Taymans */
3/* SPDX-License-Identifier: MIT */
4
5#ifndef SPA_CPU_H
6#define SPA_CPU_H
7
8#ifdef __cplusplus
9extern "C" {
10#endif
11
12#include <stdarg.h>
13
14#include <spa/utils/defs.h>
15#include <spa/utils/hook.h>
16
29#define SPA_TYPE_INTERFACE_CPU SPA_TYPE_INFO_INTERFACE_BASE "CPU"
30
31#define SPA_VERSION_CPU 0
32struct spa_cpu { struct spa_interface iface; };
33
34/* x86 specific */
35#define SPA_CPU_FLAG_MMX (1<<0)
36#define SPA_CPU_FLAG_MMXEXT (1<<1)
37#define SPA_CPU_FLAG_3DNOW (1<<2)
38#define SPA_CPU_FLAG_SSE (1<<3)
39#define SPA_CPU_FLAG_SSE2 (1<<4)
40#define SPA_CPU_FLAG_3DNOWEXT (1<<5)
41#define SPA_CPU_FLAG_SSE3 (1<<6)
42#define SPA_CPU_FLAG_SSSE3 (1<<7)
43#define SPA_CPU_FLAG_SSE41 (1<<8)
44#define SPA_CPU_FLAG_SSE42 (1<<9)
45#define SPA_CPU_FLAG_AESNI (1<<10)
46#define SPA_CPU_FLAG_AVX (1<<11)
47#define SPA_CPU_FLAG_XOP (1<<12)
48#define SPA_CPU_FLAG_FMA4 (1<<13)
49#define SPA_CPU_FLAG_CMOV (1<<14)
50#define SPA_CPU_FLAG_AVX2 (1<<15)
51#define SPA_CPU_FLAG_FMA3 (1<<16)
52#define SPA_CPU_FLAG_BMI1 (1<<17)
53#define SPA_CPU_FLAG_BMI2 (1<<18)
54#define SPA_CPU_FLAG_AVX512 (1<<19)
55#define SPA_CPU_FLAG_SLOW_UNALIGNED (1<<20)
57/* PPC specific */
58#define SPA_CPU_FLAG_ALTIVEC (1<<0)
59#define SPA_CPU_FLAG_VSX (1<<1)
60#define SPA_CPU_FLAG_POWER8 (1<<2)
62/* ARM specific */
63#define SPA_CPU_FLAG_ARMV5TE (1 << 0)
64#define SPA_CPU_FLAG_ARMV6 (1 << 1)
65#define SPA_CPU_FLAG_ARMV6T2 (1 << 2)
66#define SPA_CPU_FLAG_VFP (1 << 3)
67#define SPA_CPU_FLAG_VFPV3 (1 << 4)
68#define SPA_CPU_FLAG_NEON (1 << 5)
69#define SPA_CPU_FLAG_ARMV8 (1 << 6)
70
71#define SPA_CPU_FORCE_AUTODETECT ((uint32_t)-1)
72
73#define SPA_CPU_VM_NONE (0)
74#define SPA_CPU_VM_OTHER (1 << 0)
75#define SPA_CPU_VM_KVM (1 << 1)
76#define SPA_CPU_VM_QEMU (1 << 2)
77#define SPA_CPU_VM_BOCHS (1 << 3)
78#define SPA_CPU_VM_XEN (1 << 4)
79#define SPA_CPU_VM_UML (1 << 5)
80#define SPA_CPU_VM_VMWARE (1 << 6)
81#define SPA_CPU_VM_ORACLE (1 << 7)
82#define SPA_CPU_VM_MICROSOFT (1 << 8)
83#define SPA_CPU_VM_ZVM (1 << 9)
84#define SPA_CPU_VM_PARALLELS (1 << 10)
85#define SPA_CPU_VM_BHYVE (1 << 11)
86#define SPA_CPU_VM_QNX (1 << 12)
87#define SPA_CPU_VM_ACRN (1 << 13)
88#define SPA_CPU_VM_POWERVM (1 << 14)
89
93struct spa_cpu_methods {
96#define SPA_VERSION_CPU_METHODS 2
97 uint32_t version;
98
100 uint32_t (*get_flags) (void *object);
101
103 int (*force_flags) (void *object, uint32_t flags);
104
106 uint32_t (*get_count) (void *object);
107
109 uint32_t (*get_max_align) (void *object);
110
111 /* check if running in a VM. Since:1 */
112 uint32_t (*get_vm_type) (void *object);
113
114 /* denormals will be handled as zero, either with FTZ or DAZ.
115 * Since:2 */
116 int (*zero_denormals) (void *object, bool enable);
117};
118
119#define spa_cpu_method(o,method,version,...) \
120({ \
121 int _res = -ENOTSUP; \
122 struct spa_cpu *_c = o; \
123 spa_interface_call_res(&_c->iface, \
124 struct spa_cpu_methods, _res, \
125 method, version, ##__VA_ARGS__); \
126 _res; \
127})
128#define spa_cpu_get_flags(c) spa_cpu_method(c, get_flags, 0)
129#define spa_cpu_force_flags(c,f) spa_cpu_method(c, force_flags, 0, f)
130#define spa_cpu_get_count(c) spa_cpu_method(c, get_count, 0)
131#define spa_cpu_get_max_align(c) spa_cpu_method(c, get_max_align, 0)
132#define spa_cpu_get_vm_type(c) spa_cpu_method(c, get_vm_type, 1)
133#define spa_cpu_zero_denormals(c,e) spa_cpu_method(c, zero_denormals, 2, e)
134
136#define SPA_KEY_CPU_FORCE "cpu.force"
137#define SPA_KEY_CPU_VM_TYPE "cpu.vm.type"
138#define SPA_KEY_CPU_ZERO_DENORMALS "cpu.zero.denormals"
144#ifdef __cplusplus
145} /* extern "C" */
146#endif
147
148#endif /* SPA_CPU_H */
defs.h
spa/utils/defs.h
hook.h
spa/utils/hook.h
spa_cpu_methods
methods
Definition: cpu.h:148
spa_cpu_methods::get_max_align
uint32_t(* get_max_align)(void *object)
get maximum required alignment of data
Definition: cpu.h:165
spa_cpu_methods::force_flags
int(* force_flags)(void *object, uint32_t flags)
force CPU flags, use SPA_CPU_FORCE_AUTODETECT to autodetect CPU flags
Definition: cpu.h:159
spa_cpu_methods::get_count
uint32_t(* get_count)(void *object)
get number of CPU cores
Definition: cpu.h:162
spa_cpu_methods::get_flags
uint32_t(* get_flags)(void *object)
get CPU flags
Definition: cpu.h:156
spa_cpu_methods::zero_denormals
int(* zero_denormals)(void *object, bool enable)
Definition: cpu.h:172
spa_cpu_methods::get_vm_type
uint32_t(* get_vm_type)(void *object)
Definition: cpu.h:168
spa_cpu_methods::version
uint32_t version
Definition: cpu.h:153
spa_cpu
Definition: cpu.h:39
spa_cpu::iface
struct spa_interface iface
Definition: cpu.h:39
spa_interface
Definition: hook.h:138