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Reducing the sound rate can make picodrive more performant on less powerful systems such as the PSP
425 lines
12 KiB
C
425 lines
12 KiB
C
#ifndef LIBRETRO_CORE_OPTIONS_H__
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#define LIBRETRO_CORE_OPTIONS_H__
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#include <stdlib.h>
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#include <string.h>
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#include <libretro.h>
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#include <retro_inline.h>
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#ifndef HAVE_NO_LANGEXTRA
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#include "libretro_core_options_intl.h"
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#endif
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/*
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********************************
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* VERSION: 1.3
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********************************
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*
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* - 1.3: Move translations to libretro_core_options_intl.h
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* - libretro_core_options_intl.h includes BOM and utf-8
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* fix for MSVC 2010-2013
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* - Added HAVE_NO_LANGEXTRA flag to disable translations
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* on platforms/compilers without BOM support
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* - 1.2: Use core options v1 interface when
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* RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION is >= 1
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* (previously required RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION == 1)
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* - 1.1: Support generation of core options v0 retro_core_option_value
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* arrays containing options with a single value
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* - 1.0: First commit
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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********************************
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* Core Option Definitions
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********************************
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*/
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/* RETRO_LANGUAGE_ENGLISH */
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/* Default language:
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* - All other languages must include the same keys and values
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* - Will be used as a fallback in the event that frontend language
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* is not available
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* - Will be used as a fallback for any missing entries in
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* frontend language definition */
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struct retro_core_option_definition option_defs_us[] = {
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{
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"picodrive_input1",
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"Input device 1",
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"Choose which kind of controller is plugged in slot 1.",
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{
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{ "3 button pad", NULL },
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{ "6 button pad", NULL },
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{ "None", NULL },
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{ NULL, NULL },
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},
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"3 button pad"
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},
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{
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"picodrive_input2",
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"Input device 2",
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"Choose which kind of controller is plugged in slot 2.",
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{
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{ "3 button pad", NULL },
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{ "6 button pad", NULL },
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{ "None", NULL },
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{ NULL, NULL },
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},
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"3 button pad"
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},
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{
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"picodrive_sprlim",
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"No sprite limit",
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"Enable this to remove the sprite limit.",
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{
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{ "disabled", NULL },
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{ "enabled", NULL },
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{ NULL, NULL },
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},
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"disabled"
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},
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{
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"picodrive_ramcart",
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"MegaCD RAM cart",
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"Emulate a MegaCD RAM cart, used for save game data.",
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{
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{ "disabled", NULL },
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{ "enabled", NULL },
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{ NULL, NULL },
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},
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"disabled"
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},
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{
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"picodrive_region",
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"Region",
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"Force a specific region.",
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{
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{ "Auto", NULL },
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{ "Japan NTSC", NULL },
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{ "Japan PAL", NULL },
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{ "US", NULL },
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{ "Europe", NULL },
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{ NULL, NULL },
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},
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"Auto"
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},
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{
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"picodrive_aspect",
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"Core-provided aspect ratio",
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"Choose the core-provided aspect ratio. RetroArch's aspect ratio must be set to Core provided in the Video settings.",
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{
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{ "PAR", NULL },
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{ "4/3", NULL },
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{ "CRT", NULL },
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{ NULL, NULL },
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},
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"PAR"
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},
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{
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"picodrive_overscan",
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"Show Overscan",
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"Crop out the potentially random glitchy video output that would have been hidden by the bezel around the edge of a standard-definition television screen.",
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{
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{ "disabled", NULL },
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{ "enabled", NULL },
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{ NULL, NULL },
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},
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"disabled"
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},
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{
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"picodrive_overclk68k",
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"68K Overclock",
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"Overclock the emulated 68K chip.",
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{
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{ "disabled", NULL },
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{ "+25%", NULL },
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{ "+50%", NULL },
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{ "+75%", NULL },
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{ "+100%", NULL },
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{ "+200%", NULL },
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{ "+400%", NULL },
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{ NULL, NULL },
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},
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"disabled"
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},
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#ifdef DRC_SH2
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{
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"picodrive_drc",
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"Dynamic recompilers",
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"Enable dynamic recompilers which help to improve performance. Less accurate than interpreter CPU cores, but much faster.",
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{
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{ "enabled", NULL },
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{ "disabled", NULL },
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{ NULL, NULL },
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},
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"enabled"
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},
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#endif
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{
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"picodrive_audio_filter",
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"Audio filter",
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"Enable a low pass audio filter to better simulate the characteristic sound of a Model 1 Genesis. This option is ignored when running Master System and PICO titles. Only the Genesis and its add-on hardware (Sega CD, 32X) employed a physical low pass filter.",
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{
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{ "disabled", NULL },
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{ "low-pass", NULL },
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{ NULL, NULL },
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},
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"disabled"
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},
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{
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"picodrive_lowpass_range",
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"Low-pass filter %",
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"Specify the cut-off frequency of the audio low pass filter. A higher value increases the perceived 'strength' of the filter, since a wider range of the high frequency spectrum is attenuated.",
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{
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{ "5", NULL },
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{ "10", NULL },
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{ "15", NULL },
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{ "20", NULL },
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{ "25", NULL },
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{ "30", NULL },
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{ "35", NULL },
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{ "40", NULL },
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{ "45", NULL },
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{ "50", NULL },
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{ "55", NULL },
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{ "60", NULL },
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{ "65", NULL },
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{ "70", NULL },
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{ "75", NULL },
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{ "80", NULL },
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{ "85", NULL },
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{ "90", NULL },
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{ "95", NULL },
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{ NULL, NULL },
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},
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"60"
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},
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#if !defined(RENDER_GSKIT_PS2)
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{
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"picodrive_renderer",
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"Renderer",
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"Fast renderer can't render any mid-frame image changes so it is useful only for some games.",
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{
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{ "accurate", NULL },
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{ "fast", NULL },
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{ NULL, NULL },
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},
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"accurate"
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},
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#endif
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{
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"picodrive_sound_rate",
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"Sound quality",
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"Sound quality (in Hz). A lower value may increase performance.",
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{
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{ "16000", NULL },
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{ "22050", NULL },
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{ "32000", NULL },
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{ "44100", NULL },
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{ NULL, NULL },
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},
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"44100"
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},
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{ NULL, NULL, NULL, {{0}}, NULL },
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};
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/*
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********************************
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* Language Mapping
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********************************
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*/
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#ifndef HAVE_NO_LANGEXTRA
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struct retro_core_option_definition *option_defs_intl[RETRO_LANGUAGE_LAST] = {
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option_defs_us, /* RETRO_LANGUAGE_ENGLISH */
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NULL, /* RETRO_LANGUAGE_JAPANESE */
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NULL, /* RETRO_LANGUAGE_FRENCH */
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NULL, /* RETRO_LANGUAGE_SPANISH */
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NULL, /* RETRO_LANGUAGE_GERMAN */
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NULL, /* RETRO_LANGUAGE_ITALIAN */
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NULL, /* RETRO_LANGUAGE_DUTCH */
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NULL, /* RETRO_LANGUAGE_PORTUGUESE_BRAZIL */
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NULL, /* RETRO_LANGUAGE_PORTUGUESE_PORTUGAL */
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NULL, /* RETRO_LANGUAGE_RUSSIAN */
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NULL, /* RETRO_LANGUAGE_KOREAN */
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NULL, /* RETRO_LANGUAGE_CHINESE_TRADITIONAL */
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NULL, /* RETRO_LANGUAGE_CHINESE_SIMPLIFIED */
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NULL, /* RETRO_LANGUAGE_ESPERANTO */
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NULL, /* RETRO_LANGUAGE_POLISH */
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NULL, /* RETRO_LANGUAGE_VIETNAMESE */
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NULL, /* RETRO_LANGUAGE_ARABIC */
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NULL, /* RETRO_LANGUAGE_GREEK */
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option_defs_tr, /* RETRO_LANGUAGE_TURKISH */
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};
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#endif
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/*
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********************************
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* Functions
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********************************
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*/
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/* Handles configuration/setting of core options.
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* Should be called as early as possible - ideally inside
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* retro_set_environment(), and no later than retro_load_game()
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* > We place the function body in the header to avoid the
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* necessity of adding more .c files (i.e. want this to
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* be as painless as possible for core devs)
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*/
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static INLINE void libretro_set_core_options(retro_environment_t environ_cb)
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{
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unsigned version = 0;
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if (!environ_cb)
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return;
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if (environ_cb(RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION, &version) && (version >= 1))
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{
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#ifndef HAVE_NO_LANGEXTRA
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struct retro_core_options_intl core_options_intl;
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unsigned language = 0;
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core_options_intl.us = option_defs_us;
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core_options_intl.local = NULL;
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if (environ_cb(RETRO_ENVIRONMENT_GET_LANGUAGE, &language) &&
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(language < RETRO_LANGUAGE_LAST) && (language != RETRO_LANGUAGE_ENGLISH))
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core_options_intl.local = option_defs_intl[language];
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environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_INTL, &core_options_intl);
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#else
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environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS, &option_defs_us);
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#endif
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}
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else
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{
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size_t i;
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size_t num_options = 0;
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struct retro_variable *variables = NULL;
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char **values_buf = NULL;
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/* Determine number of options */
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while (true)
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{
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if (option_defs_us[num_options].key)
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num_options++;
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else
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break;
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}
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/* Allocate arrays */
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variables = (struct retro_variable *)calloc(num_options + 1, sizeof(struct retro_variable));
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values_buf = (char **)calloc(num_options, sizeof(char *));
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if (!variables || !values_buf)
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goto error;
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/* Copy parameters from option_defs_us array */
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for (i = 0; i < num_options; i++)
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{
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const char *key = option_defs_us[i].key;
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const char *desc = option_defs_us[i].desc;
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const char *default_value = option_defs_us[i].default_value;
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struct retro_core_option_value *values = option_defs_us[i].values;
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size_t buf_len = 3;
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size_t default_index = 0;
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values_buf[i] = NULL;
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if (desc)
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{
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size_t num_values = 0;
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/* Determine number of values */
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while (true)
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{
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if (values[num_values].value)
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{
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/* Check if this is the default value */
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if (default_value)
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if (strcmp(values[num_values].value, default_value) == 0)
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default_index = num_values;
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buf_len += strlen(values[num_values].value);
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num_values++;
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}
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else
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break;
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}
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/* Build values string */
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if (num_values > 0)
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{
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size_t j;
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buf_len += num_values - 1;
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buf_len += strlen(desc);
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values_buf[i] = (char *)calloc(buf_len, sizeof(char));
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if (!values_buf[i])
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goto error;
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strcpy(values_buf[i], desc);
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strcat(values_buf[i], "; ");
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/* Default value goes first */
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strcat(values_buf[i], values[default_index].value);
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/* Add remaining values */
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for (j = 0; j < num_values; j++)
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{
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if (j != default_index)
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{
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strcat(values_buf[i], "|");
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strcat(values_buf[i], values[j].value);
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}
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}
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}
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}
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variables[i].key = key;
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variables[i].value = values_buf[i];
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}
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/* Set variables */
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environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, variables);
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error:
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/* Clean up */
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if (values_buf)
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{
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for (i = 0; i < num_options; i++)
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{
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if (values_buf[i])
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{
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free(values_buf[i]);
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values_buf[i] = NULL;
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}
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}
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free(values_buf);
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values_buf = NULL;
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}
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if (variables)
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{
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free(variables);
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variables = NULL;
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}
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}
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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