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https://github.com/PabloMK7/citra.git
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342 lines
11 KiB
C++
342 lines
11 KiB
C++
// Copyright 2017 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include "audio_core/audio_types.h"
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#include "audio_core/hle/common.h"
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#include "audio_core/hle/hle.h"
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#include "audio_core/hle/mixers.h"
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#include "audio_core/hle/shared_memory.h"
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#include "audio_core/hle/source.h"
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#include "audio_core/sink.h"
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "common/logging/log.h"
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#include "core/core_timing.h"
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#include "core/hle/service/dsp_dsp.h"
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namespace AudioCore {
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static constexpr u64 audio_frame_ticks = 1310252ull; ///< Units: ARM11 cycles
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struct DspHle::Impl final {
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public:
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explicit Impl(DspHle& parent);
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~Impl();
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DspState GetDspState() const;
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std::vector<u8> PipeRead(DspPipe pipe_number, u32 length);
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size_t GetPipeReadableSize(DspPipe pipe_number) const;
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void PipeWrite(DspPipe pipe_number, const std::vector<u8>& buffer);
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std::array<u8, Memory::DSP_RAM_SIZE>& GetDspMemory();
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private:
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void ResetPipes();
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void WriteU16(DspPipe pipe_number, u16 value);
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void AudioPipeWriteStructAddresses();
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size_t CurrentRegionIndex() const;
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HLE::SharedMemory& ReadRegion();
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HLE::SharedMemory& WriteRegion();
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StereoFrame16 GenerateCurrentFrame();
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bool Tick();
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void AudioTickCallback(int cycles_late);
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DspState dsp_state = DspState::Off;
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std::array<std::vector<u8>, num_dsp_pipe> pipe_data;
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HLE::DspMemory dsp_memory;
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std::array<HLE::Source, HLE::num_sources> sources{{
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HLE::Source(0), HLE::Source(1), HLE::Source(2), HLE::Source(3), HLE::Source(4),
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HLE::Source(5), HLE::Source(6), HLE::Source(7), HLE::Source(8), HLE::Source(9),
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HLE::Source(10), HLE::Source(11), HLE::Source(12), HLE::Source(13), HLE::Source(14),
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HLE::Source(15), HLE::Source(16), HLE::Source(17), HLE::Source(18), HLE::Source(19),
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HLE::Source(20), HLE::Source(21), HLE::Source(22), HLE::Source(23),
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}};
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HLE::Mixers mixers;
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DspHle& parent;
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CoreTiming::EventType* tick_event;
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};
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DspHle::Impl::Impl(DspHle& parent_) : parent(parent_) {
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tick_event =
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CoreTiming::RegisterEvent("AudioCore::DspHle::tick_event", [this](u64, int cycles_late) {
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this->AudioTickCallback(cycles_late);
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});
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CoreTiming::ScheduleEvent(audio_frame_ticks, tick_event);
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}
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DspHle::Impl::~Impl() {
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CoreTiming::UnscheduleEvent(tick_event, 0);
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}
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DspState DspHle::Impl::GetDspState() const {
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return dsp_state;
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}
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std::vector<u8> DspHle::Impl::PipeRead(DspPipe pipe_number, u32 length) {
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const size_t pipe_index = static_cast<size_t>(pipe_number);
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if (pipe_index >= num_dsp_pipe) {
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LOG_ERROR(Audio_DSP, "pipe_number = %zu invalid", pipe_index);
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return {};
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}
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if (length > UINT16_MAX) { // Can only read at most UINT16_MAX from the pipe
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LOG_ERROR(Audio_DSP, "length of %u greater than max of %u", length, UINT16_MAX);
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return {};
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}
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std::vector<u8>& data = pipe_data[pipe_index];
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if (length > data.size()) {
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LOG_WARNING(
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Audio_DSP,
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"pipe_number = %zu is out of data, application requested read of %u but %zu remain",
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pipe_index, length, data.size());
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length = static_cast<u32>(data.size());
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}
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if (length == 0)
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return {};
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std::vector<u8> ret(data.begin(), data.begin() + length);
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data.erase(data.begin(), data.begin() + length);
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return ret;
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}
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size_t DspHle::Impl::GetPipeReadableSize(DspPipe pipe_number) const {
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const size_t pipe_index = static_cast<size_t>(pipe_number);
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if (pipe_index >= num_dsp_pipe) {
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LOG_ERROR(Audio_DSP, "pipe_number = %zu invalid", pipe_index);
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return 0;
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}
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return pipe_data[pipe_index].size();
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}
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void DspHle::Impl::PipeWrite(DspPipe pipe_number, const std::vector<u8>& buffer) {
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switch (pipe_number) {
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case DspPipe::Audio: {
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if (buffer.size() != 4) {
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LOG_ERROR(Audio_DSP, "DspPipe::Audio: Unexpected buffer length %zu was written",
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buffer.size());
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return;
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}
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enum class StateChange {
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Initialize = 0,
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Shutdown = 1,
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Wakeup = 2,
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Sleep = 3,
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};
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// The difference between Initialize and Wakeup is that Input state is maintained
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// when sleeping but isn't when turning it off and on again. (TODO: Implement this.)
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// Waking up from sleep garbles some of the structs in the memory region. (TODO:
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// Implement this.) Applications store away the state of these structs before
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// sleeping and reset it back after wakeup on behalf of the DSP.
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switch (static_cast<StateChange>(buffer[0])) {
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case StateChange::Initialize:
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LOG_INFO(Audio_DSP, "Application has requested initialization of DSP hardware");
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ResetPipes();
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AudioPipeWriteStructAddresses();
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dsp_state = DspState::On;
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break;
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case StateChange::Shutdown:
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LOG_INFO(Audio_DSP, "Application has requested shutdown of DSP hardware");
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dsp_state = DspState::Off;
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break;
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case StateChange::Wakeup:
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LOG_INFO(Audio_DSP, "Application has requested wakeup of DSP hardware");
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ResetPipes();
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AudioPipeWriteStructAddresses();
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dsp_state = DspState::On;
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break;
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case StateChange::Sleep:
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LOG_INFO(Audio_DSP, "Application has requested sleep of DSP hardware");
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UNIMPLEMENTED();
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dsp_state = DspState::Sleeping;
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break;
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default:
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LOG_ERROR(Audio_DSP,
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"Application has requested unknown state transition of DSP hardware %hhu",
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buffer[0]);
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dsp_state = DspState::Off;
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break;
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}
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return;
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}
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default:
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LOG_CRITICAL(Audio_DSP, "pipe_number = %zu unimplemented",
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static_cast<size_t>(pipe_number));
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UNIMPLEMENTED();
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return;
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}
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}
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std::array<u8, Memory::DSP_RAM_SIZE>& DspHle::Impl::GetDspMemory() {
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return dsp_memory.raw_memory;
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}
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void DspHle::Impl::ResetPipes() {
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for (auto& data : pipe_data) {
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data.clear();
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}
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dsp_state = DspState::Off;
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}
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void DspHle::Impl::WriteU16(DspPipe pipe_number, u16 value) {
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const size_t pipe_index = static_cast<size_t>(pipe_number);
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std::vector<u8>& data = pipe_data.at(pipe_index);
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// Little endian
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data.emplace_back(value & 0xFF);
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data.emplace_back(value >> 8);
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}
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void DspHle::Impl::AudioPipeWriteStructAddresses() {
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// These struct addresses are DSP dram addresses.
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// See also: DSP_DSP::ConvertProcessAddressFromDspDram
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static const std::array<u16, 15> struct_addresses = {
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0x8000 + offsetof(HLE::SharedMemory, frame_counter) / 2,
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0x8000 + offsetof(HLE::SharedMemory, source_configurations) / 2,
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0x8000 + offsetof(HLE::SharedMemory, source_statuses) / 2,
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0x8000 + offsetof(HLE::SharedMemory, adpcm_coefficients) / 2,
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0x8000 + offsetof(HLE::SharedMemory, dsp_configuration) / 2,
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0x8000 + offsetof(HLE::SharedMemory, dsp_status) / 2,
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0x8000 + offsetof(HLE::SharedMemory, final_samples) / 2,
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0x8000 + offsetof(HLE::SharedMemory, intermediate_mix_samples) / 2,
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0x8000 + offsetof(HLE::SharedMemory, compressor) / 2,
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0x8000 + offsetof(HLE::SharedMemory, dsp_debug) / 2,
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0x8000 + offsetof(HLE::SharedMemory, unknown10) / 2,
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0x8000 + offsetof(HLE::SharedMemory, unknown11) / 2,
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0x8000 + offsetof(HLE::SharedMemory, unknown12) / 2,
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0x8000 + offsetof(HLE::SharedMemory, unknown13) / 2,
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0x8000 + offsetof(HLE::SharedMemory, unknown14) / 2,
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};
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// Begin with a u16 denoting the number of structs.
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WriteU16(DspPipe::Audio, static_cast<u16>(struct_addresses.size()));
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// Then write the struct addresses.
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for (u16 addr : struct_addresses) {
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WriteU16(DspPipe::Audio, addr);
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}
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// Signal that we have data on this pipe.
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Service::DSP_DSP::SignalPipeInterrupt(DspPipe::Audio);
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}
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size_t DspHle::Impl::CurrentRegionIndex() const {
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// The region with the higher frame counter is chosen unless there is wraparound.
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// This function only returns a 0 or 1.
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const u16 frame_counter_0 = dsp_memory.region_0.frame_counter;
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const u16 frame_counter_1 = dsp_memory.region_1.frame_counter;
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if (frame_counter_0 == 0xFFFFu && frame_counter_1 != 0xFFFEu) {
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// Wraparound has occurred.
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return 1;
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}
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if (frame_counter_1 == 0xFFFFu && frame_counter_0 != 0xFFFEu) {
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// Wraparound has occurred.
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return 0;
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}
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return (frame_counter_0 > frame_counter_1) ? 0 : 1;
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}
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HLE::SharedMemory& DspHle::Impl::ReadRegion() {
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return CurrentRegionIndex() == 0 ? dsp_memory.region_0 : dsp_memory.region_1;
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}
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HLE::SharedMemory& DspHle::Impl::WriteRegion() {
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return CurrentRegionIndex() != 0 ? dsp_memory.region_0 : dsp_memory.region_1;
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}
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StereoFrame16 DspHle::Impl::GenerateCurrentFrame() {
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HLE::SharedMemory& read = ReadRegion();
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HLE::SharedMemory& write = WriteRegion();
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std::array<QuadFrame32, 3> intermediate_mixes = {};
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// Generate intermediate mixes
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for (size_t i = 0; i < HLE::num_sources; i++) {
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write.source_statuses.status[i] =
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sources[i].Tick(read.source_configurations.config[i], read.adpcm_coefficients.coeff[i]);
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for (size_t mix = 0; mix < 3; mix++) {
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sources[i].MixInto(intermediate_mixes[mix], mix);
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}
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}
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// Generate final mix
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write.dsp_status = mixers.Tick(read.dsp_configuration, read.intermediate_mix_samples,
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write.intermediate_mix_samples, intermediate_mixes);
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StereoFrame16 output_frame = mixers.GetOutput();
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// Write current output frame to the shared memory region
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for (size_t samplei = 0; samplei < output_frame.size(); samplei++) {
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for (size_t channeli = 0; channeli < output_frame[0].size(); channeli++) {
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write.final_samples.pcm16[samplei][channeli] = s16_le(output_frame[samplei][channeli]);
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}
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}
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return output_frame;
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}
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bool DspHle::Impl::Tick() {
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StereoFrame16 current_frame = {};
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// TODO: Check dsp::DSP semaphore (which indicates emulated application has finished writing to
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// shared memory region)
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current_frame = GenerateCurrentFrame();
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parent.OutputFrame(current_frame);
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return true;
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}
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void DspHle::Impl::AudioTickCallback(int cycles_late) {
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if (Tick()) {
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// TODO(merry): Signal all the other interrupts as appropriate.
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Service::DSP_DSP::SignalPipeInterrupt(DspPipe::Audio);
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// HACK(merry): Added to prevent regressions. Will remove soon.
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Service::DSP_DSP::SignalPipeInterrupt(DspPipe::Binary);
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}
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// Reschedule recurrent event
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CoreTiming::ScheduleEvent(audio_frame_ticks - cycles_late, tick_event);
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}
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DspHle::DspHle() : impl(std::make_unique<Impl>(*this)) {}
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DspHle::~DspHle() = default;
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DspState DspHle::GetDspState() const {
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return impl->GetDspState();
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}
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std::vector<u8> DspHle::PipeRead(DspPipe pipe_number, u32 length) {
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return impl->PipeRead(pipe_number, length);
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}
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size_t DspHle::GetPipeReadableSize(DspPipe pipe_number) const {
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return impl->GetPipeReadableSize(pipe_number);
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}
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void DspHle::PipeWrite(DspPipe pipe_number, const std::vector<u8>& buffer) {
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impl->PipeWrite(pipe_number, buffer);
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}
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std::array<u8, Memory::DSP_RAM_SIZE>& DspHle::GetDspMemory() {
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return impl->GetDspMemory();
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}
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} // namespace AudioCore
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