mirror of
https://github.com/CTCaer/RetroArch.git
synced 2024-12-26 20:54:47 +00:00
233 lines
6.2 KiB
C
233 lines
6.2 KiB
C
/* Copyright (C) 2010-2017 The RetroArch team
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*
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* ---------------------------------------------------------------------------------------
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* The following license statement only applies to this file (retro_miscellaneous.h).
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* ---------------------------------------------------------------------------------------
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*
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* Permission is hereby granted, free of charge,
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* to any person obtaining a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __RARCH_MISCELLANEOUS_H
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#define __RARCH_MISCELLANEOUS_H
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#include <stdint.h>
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#include <math.h>
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#if defined(__CELLOS_LV2__) && !defined(__PSL1GHT__)
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#include <sys/timer.h>
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#elif defined(XENON)
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#include <time/time.h>
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#elif defined(GEKKO) || defined(__PSL1GHT__) || defined(__QNX__)
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#include <unistd.h>
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#elif defined(WIIU)
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#include <wiiu/os/thread.h>
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#elif defined(PSP)
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#include <pspthreadman.h>
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#elif defined(VITA)
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#include <psp2/kernel/threadmgr.h>
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#elif defined(_3DS)
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#include <3ds.h>
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#else
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#include <time.h>
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#endif
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#if defined(_WIN32) && !defined(_XBOX)
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#elif defined(_WIN32) && defined(_XBOX)
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#include <Xtl.h>
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#endif
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#include <limits.h>
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#include <math.h>
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#ifdef _MSC_VER
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#include <compat/msvc.h>
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#endif
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#include <retro_inline.h>
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#ifndef PATH_MAX_LENGTH
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#if defined(_XBOX1) || defined(_3DS) || defined(PSP) || defined(GEKKO)|| defined(WIIU)
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#define PATH_MAX_LENGTH 512
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#else
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#define PATH_MAX_LENGTH 4096
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#endif
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#endif
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#ifndef M_PI
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#if !defined(_MSC_VER) && !defined(USE_MATH_DEFINES)
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#define M_PI 3.14159265358979323846264338327
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#endif
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#endif
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#ifndef MAX
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#endif
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#ifndef MIN
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#endif
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
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#define RARCH_SCALE_BASE 256
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#ifdef DJGPP
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#define timespec timeval
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#define tv_nsec tv_usec
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#include <unistd.h>
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extern int nanosleep(const struct timespec *rqtp, struct timespec *rmtp);
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static int nanosleepDOS(const struct timespec *rqtp, struct timespec *rmtp)
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{
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usleep(1000000 * rqtp->tv_sec + rqtp->tv_nsec / 1000);
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if (rmtp)
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rmtp->tv_sec = rmtp->tv_nsec=0;
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return 0;
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}
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#define nanosleep nanosleepDOS
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#endif
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/**
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* retro_sleep:
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* @msec : amount in milliseconds to sleep
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*
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* Sleeps for a specified amount of milliseconds (@msec).
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**/
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static INLINE void retro_sleep(unsigned msec)
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{
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#if defined(__CELLOS_LV2__) && !defined(__PSL1GHT__)
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sys_timer_usleep(1000 * msec);
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#elif defined(PSP) || defined(VITA)
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sceKernelDelayThread(1000 * msec);
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#elif defined(_3DS)
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svcSleepThread(1000000 * (s64)msec);
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#elif defined(_WIN32)
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Sleep(msec);
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#elif defined(XENON)
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udelay(1000 * msec);
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#elif defined(GEKKO) || defined(__PSL1GHT__) || defined(__QNX__)
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usleep(1000 * msec);
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#elif defined(WIIU)
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OSSleepTicks(ms_to_ticks(msec));
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#else
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struct timespec tv = {0};
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tv.tv_sec = msec / 1000;
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tv.tv_nsec = (msec % 1000) * 1000000;
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nanosleep(&tv, NULL);
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#endif
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}
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/**
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* next_pow2:
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* @v : initial value
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*
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* Get next power of 2 value based on initial value.
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*
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* Returns: next power of 2 value (derived from @v).
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**/
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static INLINE uint32_t next_pow2(uint32_t v)
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{
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v--;
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v |= v >> 1;
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v |= v >> 2;
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v |= v >> 4;
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v |= v >> 8;
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v |= v >> 16;
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v++;
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return v;
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}
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/**
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* prev_pow2:
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* @v : initial value
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*
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* Get previous power of 2 value based on initial value.
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*
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* Returns: previous power of 2 value (derived from @v).
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**/
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static INLINE uint32_t prev_pow2(uint32_t v)
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{
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v |= v >> 1;
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v |= v >> 2;
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v |= v >> 4;
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v |= v >> 8;
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v |= v >> 16;
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return v - (v >> 1);
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}
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/**
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* db_to_gain:
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* @db : Decibels.
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*
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* Converts decibels to voltage gain.
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*
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* Returns: voltage gain value.
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**/
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static INLINE float db_to_gain(float db)
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{
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return powf(10.0f, db / 20.0f);
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}
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static INLINE uint32_t read_le(const uint8_t *data, unsigned size)
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{
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unsigned i;
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uint32_t val = 0;
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size *= 8;
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for (i = 0; i < size; i += 8)
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val |= (uint32_t)*data++ << i;
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return val;
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}
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/* Helper macros and struct to keep track of many booleans.
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* To check for multiple bits, use &&, not &.
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* For OR, | can be used. */
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typedef struct
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{
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uint32_t data[8];
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} retro_bits_t;
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#define BIT_SET(a, bit) ((a)[(bit) >> 3] |= (1 << ((bit) & 7)))
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#define BIT_CLEAR(a, bit) ((a)[(bit) >> 3] &= ~(1 << ((bit) & 7)))
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#define BIT_GET(a, bit) ((a)[(bit) >> 3] & (1 << ((bit) & 7)))
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#define BIT16_SET(a, bit) ((a) |= (1 << ((bit) & 15)))
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#define BIT16_CLEAR(a, bit) ((a) &= ~(1 << ((bit) & 15)))
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#define BIT16_GET(a, bit) (!!((a) & (1 << ((bit) & 15))))
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#define BIT16_CLEAR_ALL(a) ((a) = 0)
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#define BIT32_SET(a, bit) ((a) |= (1 << ((bit) & 31)))
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#define BIT32_CLEAR(a, bit) ((a) &= ~(1 << ((bit) & 31)))
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#define BIT32_GET(a, bit) (!!((a) & (1 << ((bit) & 31))))
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#define BIT32_CLEAR_ALL(a) ((a) = 0)
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#define BIT64_SET(a, bit) ((a) |= (UINT64_C(1) << ((bit) & 63)))
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#define BIT64_CLEAR(a, bit) ((a) &= ~(UINT64_C(1) << ((bit) & 63)))
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#define BIT64_GET(a, bit) (!!((a) & (UINT64_C(1) << ((bit) & 63))))
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#define BIT64_CLEAR_ALL(a) ((a) = 0)
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#define BIT128_SET(a, bit) ((a).data[(bit) >> 5] |= (1 << ((bit) & 31)))
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#define BIT128_CLEAR(a, bit) ((a).data[(bit) >> 5] &= ~(1 << ((bit) & 31)))
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#define BIT128_GET(a, bit) ((a).data[(bit) >> 5] & (1 << ((bit) & 31)))
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#define BIT128_CLEAR_ALL(a) memset(&(a), 0, sizeof(a));
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#endif
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