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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <array>
#include <vector>
#include "audio_core/hle/dsp.h"
#include "audio_core/hle/pipe.h"
#include "common/assert.h"
#include "common/common_types.h"
#include "common/logging/log.h"
#include "core/hle/service/dsp_dsp.h"
namespace DSP {
namespace HLE {
static DspState dsp_state = DspState::Off;
static std::array<std::vector<u8>, NUM_DSP_PIPE> pipe_data;
void ResetPipes() {
for (auto& data : pipe_data) {
data.clear();
}
dsp_state = DspState::Off;
}
std::vector<u8> PipeRead(DspPipe pipe_number, u32 length) {
const size_t pipe_index = static_cast<size_t>(pipe_number);
if (pipe_index >= NUM_DSP_PIPE) {
LOG_ERROR(Audio_DSP, "pipe_number = %zu invalid", pipe_index);
return {};
}
if (length > UINT16_MAX) { // Can only read at most UINT16_MAX from the pipe
LOG_ERROR(Audio_DSP, "length of %u greater than max of %u", length, UINT16_MAX);
return {};
}
std::vector<u8>& data = pipe_data[pipe_index];
if (length > data.size()) {
LOG_WARNING(
Audio_DSP,
"pipe_number = %zu is out of data, application requested read of %u but %zu remain",
pipe_index, length, data.size());
length = static_cast<u32>(data.size());
}
if (length == 0)
return {};
std::vector<u8> ret(data.begin(), data.begin() + length);
data.erase(data.begin(), data.begin() + length);
return ret;
}
size_t GetPipeReadableSize(DspPipe pipe_number) {
const size_t pipe_index = static_cast<size_t>(pipe_number);
if (pipe_index >= NUM_DSP_PIPE) {
LOG_ERROR(Audio_DSP, "pipe_number = %zu invalid", pipe_index);
return 0;
}
return pipe_data[pipe_index].size();
}
static void WriteU16(DspPipe pipe_number, u16 value) {
const size_t pipe_index = static_cast<size_t>(pipe_number);
std::vector<u8>& data = pipe_data.at(pipe_index);
// Little endian
data.emplace_back(value & 0xFF);
data.emplace_back(value >> 8);
}
static void AudioPipeWriteStructAddresses() {
// These struct addresses are DSP dram addresses.
// See also: DSP_DSP::ConvertProcessAddressFromDspDram
static const std::array<u16, 15> struct_addresses = {
0x8000 + offsetof(SharedMemory, frame_counter) / 2,
0x8000 + offsetof(SharedMemory, source_configurations) / 2,
0x8000 + offsetof(SharedMemory, source_statuses) / 2,
0x8000 + offsetof(SharedMemory, adpcm_coefficients) / 2,
0x8000 + offsetof(SharedMemory, dsp_configuration) / 2,
0x8000 + offsetof(SharedMemory, dsp_status) / 2,
0x8000 + offsetof(SharedMemory, final_samples) / 2,
0x8000 + offsetof(SharedMemory, intermediate_mix_samples) / 2,
0x8000 + offsetof(SharedMemory, compressor) / 2,
0x8000 + offsetof(SharedMemory, dsp_debug) / 2,
0x8000 + offsetof(SharedMemory, unknown10) / 2,
0x8000 + offsetof(SharedMemory, unknown11) / 2,
0x8000 + offsetof(SharedMemory, unknown12) / 2,
0x8000 + offsetof(SharedMemory, unknown13) / 2,
0x8000 + offsetof(SharedMemory, unknown14) / 2};
// Begin with a u16 denoting the number of structs.
WriteU16(DspPipe::Audio, static_cast<u16>(struct_addresses.size()));
// Then write the struct addresses.
for (u16 addr : struct_addresses) {
WriteU16(DspPipe::Audio, addr);
}
// Signal that we have data on this pipe.
DSP_DSP::SignalPipeInterrupt(DspPipe::Audio);
}
void PipeWrite(DspPipe pipe_number, const std::vector<u8>& buffer) {
switch (pipe_number) {
case DspPipe::Audio: {
if (buffer.size() != 4) {
LOG_ERROR(Audio_DSP, "DspPipe::Audio: Unexpected buffer length %zu was written",
buffer.size());
return;
}
enum class StateChange { Initalize = 0, Shutdown = 1, Wakeup = 2, Sleep = 3 };
// The difference between Initialize and Wakeup is that Input state is maintained
// when sleeping but isn't when turning it off and on again. (TODO: Implement this.)
// Waking up from sleep garbles some of the structs in the memory region. (TODO:
// Implement this.) Applications store away the state of these structs before
// sleeping and reset it back after wakeup on behalf of the DSP.
switch (static_cast<StateChange>(buffer[0])) {
case StateChange::Initalize:
LOG_INFO(Audio_DSP, "Application has requested initialization of DSP hardware");
ResetPipes();
AudioPipeWriteStructAddresses();
dsp_state = DspState::On;
break;
case StateChange::Shutdown:
LOG_INFO(Audio_DSP, "Application has requested shutdown of DSP hardware");
dsp_state = DspState::Off;
break;
case StateChange::Wakeup:
LOG_INFO(Audio_DSP, "Application has requested wakeup of DSP hardware");
ResetPipes();
AudioPipeWriteStructAddresses();
dsp_state = DspState::On;
break;
case StateChange::Sleep:
LOG_INFO(Audio_DSP, "Application has requested sleep of DSP hardware");
UNIMPLEMENTED();
dsp_state = DspState::Sleeping;
break;
default:
LOG_ERROR(Audio_DSP,
"Application has requested unknown state transition of DSP hardware %hhu",
buffer[0]);
dsp_state = DspState::Off;
break;
}
return;
}
default:
LOG_CRITICAL(Audio_DSP, "pipe_number = %zu unimplemented",
static_cast<size_t>(pipe_number));
UNIMPLEMENTED();
return;
}
}
DspState GetDspState() {
return dsp_state;
}
} // namespace HLE
} // namespace DSP
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