1888e17b22
... even when HPs aren't inserted. This is aimed at people using Bluetooth audio hw mods. There are some software limitations, please read the INI/option description. Closes #1828.
83 lines
3.1 KiB
C
83 lines
3.1 KiB
C
/*
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* This file is part of Luma3DS
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* Copyright (C) 2023 Aurora Wright, TuxSH
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Additional Terms 7.b and 7.c of GPLv3 apply to this file:
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* * Requiring preservation of specified reasonable legal notices or
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* author attributions in that material or in the Appropriate Legal
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* Notices displayed by works containing it.
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* * Prohibiting misrepresentation of the origin of that material,
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* or requiring that modified versions of such material be marked in
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* reasonable ways as different from the original version.
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*/
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#include <3ds.h>
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#include "shell.h"
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#include "utils.h"
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#include "screen_filters.h"
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#include "luma_config.h"
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static void forceHeadphoneOutput(void)
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{
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// DSP/Codec sysmodule already have a way to force headphone output,
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// but it's only for when the shell is closed (applied on shell close,
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// cleared on shell opened); that mechanism is usually used by apps
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// which have a "jukebox" feature (e.g Pokémon SMD).
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// This whole thing here is fragile and doesn't mesh well with the "codec"
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// sysmodule. For example, inserting then removing HPs will undo what this
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// function does.
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// TODO: stop opening and closing cdc:CHK (and mcu::HWC), which
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// unecessarily spawns and despawns threads.
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// Wait for CSND to do its job
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svcSleepThread(20 * 1000 * 1000LL);
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Handle *cdcChkHandlePtr = cdcChkGetSessionHandle();
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*cdcChkHandlePtr = 0;
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Result res = srvGetServiceHandle(cdcChkHandlePtr, "cdc:CHK");
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// Try to steal the handle if some other process is using the service (custom SVC)
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if (R_FAILED(res))
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res = svcControlService(SERVICEOP_STEAL_CLIENT_SESSION, cdcChkHandlePtr, "cdc:CHK");
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if (R_FAILED(res))
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return;
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u8 reg = 0x30; // Enable override selection (always set), then select HP.
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res = CDCCHK_WriteRegisters2(100, 69, ®, 1);
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svcCloseHandle(*cdcChkHandlePtr);
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}
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void handleShellOpened(void)
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{
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s64 out = 0;
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svcGetSystemInfo(&out, 0x10000, 3);
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u32 config = (u32)out;
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// We need to check here if GSP has done its init stuff, in particular
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// clock and reset, otherwise we'll cause core1 to be in a waitstate
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// forever (if we access a GPU reg while the GPU block's clock is off).
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// (GSP does its init before registering its services)
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if (isServiceUsable("gsp::Gpu"))
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ScreenFiltersMenu_RestoreSettings();
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if ((config & BIT(FORCEHEADPHONEOUTPUT)) != 0 && isServiceUsable("cdc:CHK"))
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forceHeadphoneOutput();
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}
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