54 lines
2.0 KiB
C++
54 lines
2.0 KiB
C++
|
// Copyright 2016 Citra Emulator Project
|
||
|
|
// Licensed under GPLv2 or any later version
|
||
|
|
// Refer to the license.txt file included.
|
||
|
|
|
||
|
|
#include "audio_core/audio_core.h"
|
||
|
|
#include "audio_core/hle/dsp.h"
|
||
|
|
|
||
|
|
#include "core/core_timing.h"
|
||
|
|
#include "core/hle/kernel/vm_manager.h"
|
||
|
|
#include "core/hle/service/dsp_dsp.h"
|
||
|
|
|
||
|
|
namespace AudioCore {
|
||
|
|
|
||
|
|
// Audio Ticks occur about every 5 miliseconds.
|
||
|
|
static int tick_event; ///< CoreTiming event
|
||
|
|
static constexpr u64 audio_frame_ticks = 1310252ull; ///< Units: ARM11 cycles
|
||
|
|
|
||
|
|
static void AudioTickCallback(u64 /*userdata*/, int cycles_late) {
|
||
|
|
if (DSP::HLE::Tick()) {
|
||
|
|
// HACK: We're not signaling the interrups when they should be, but just firing them all off together.
|
||
|
|
// It should be only (interrupt_id = 2, channel_id = 2) that's signalled here.
|
||
|
|
// TODO(merry): Understand when the other interrupts are fired.
|
||
|
|
DSP_DSP::SignalAllInterrupts();
|
||
|
|
}
|
||
|
|
|
||
|
|
// Reschedule recurrent event
|
||
|
|
CoreTiming::ScheduleEvent(audio_frame_ticks - cycles_late, tick_event);
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Initialise Audio
|
||
|
|
void Init() {
|
||
|
|
DSP::HLE::Init();
|
||
|
|
|
||
|
|
tick_event = CoreTiming::RegisterEvent("AudioCore::tick_event", AudioTickCallback);
|
||
|
|
CoreTiming::ScheduleEvent(audio_frame_ticks, tick_event);
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Add DSP address spaces to Process's address space.
|
||
|
|
void AddAddressSpace(Kernel::VMManager& address_space) {
|
||
|
|
auto r0_vma = address_space.MapBackingMemory(DSP::HLE::region0_base, reinterpret_cast<u8*>(&DSP::HLE::g_region0), sizeof(DSP::HLE::SharedMemory), Kernel::MemoryState::IO).MoveFrom();
|
||
|
|
address_space.Reprotect(r0_vma, Kernel::VMAPermission::ReadWrite);
|
||
|
|
|
||
|
|
auto r1_vma = address_space.MapBackingMemory(DSP::HLE::region1_base, reinterpret_cast<u8*>(&DSP::HLE::g_region1), sizeof(DSP::HLE::SharedMemory), Kernel::MemoryState::IO).MoveFrom();
|
||
|
|
address_space.Reprotect(r1_vma, Kernel::VMAPermission::ReadWrite);
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Shutdown Audio
|
||
|
|
void Shutdown() {
|
||
|
|
CoreTiming::UnscheduleEvent(tick_event, 0);
|
||
|
|
DSP::HLE::Shutdown();
|
||
|
|
}
|
||
|
|
|
||
|
|
} //namespace
|