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metaforce/Runtime/Audio/CStreamAudioManager.cpp

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#include "Runtime/Audio/CStreamAudioManager.hpp"
#include "Runtime/Audio/CAudioSys.hpp"
#include "Runtime/CDvdFile.hpp"
#include "Runtime/CDvdRequest.hpp"
#include "Runtime/CStringExtras.hpp"
#include <algorithm>
#include <cstdlib>
#include <cstring>
#include <memory>
#include <amuse/DSPCodec.hpp>
namespace urde {
class CDSPStreamManager;
static u32 s_HandleCounter = 0;
static u32 s_HandleCounter2 = 0;
/* Standard DSPADPCM header */
struct dspadpcm_header {
u32 x0_num_samples;
u32 x4_num_nibbles;
u32 x8_sample_rate;
u16 xc_loop_flag;
u16 xe_format; /* 0 for ADPCM */
u32 x10_loop_start_nibble;
u32 x14_loop_end_nibble;
u32 x18_ca;
s16 x1c_coef[8][2];
s16 x3c_gain;
s16 x3e_ps;
s16 x40_hist1;
s16 x42_hist2;
s16 x44_loop_ps;
s16 x46_loop_hist1;
s16 x48_loop_hist2;
u16 x4a_pad[11];
};
struct SDSPStreamInfo {
const char* x0_fileName;
u32 x4_sampleRate;
u32 x8_headerSize = sizeof(dspadpcm_header);
u32 xc_adpcmBytes;
bool x10_loopFlag;
u32 x14_loopStartByte;
u32 x18_loopEndByte;
s16 x1c_coef[8][2];
SDSPStreamInfo() = default;
SDSPStreamInfo(const CDSPStreamManager& stream);
};
struct SDSPStream : boo::IAudioVoiceCallback {
bool x0_active;
bool x1_oneshot;
s32 x4_ownerId;
SDSPStream* x8_stereoLeft;
SDSPStream* xc_companionRight;
SDSPStreamInfo x10_info;
float x4c_vol;
float m_leftgain, m_rightgain;
// DVDFileInfo x50_dvdHandle1;
// DVDFileInfo x8c_dvdHandle2;
// u32 xc8_streamId = -1; // MusyX stream handle
u32 xcc_fileCur = 0;
std::unique_ptr<u8[]> xd4_ringBuffer;
u32 xd8_ringBytes = 0x11DC0; // 73152 4sec in ADPCM bytes
u32 xdc_ringSamples = 0x1f410; // 128016 4sec in samples
s8 xe0_curBuffer = -1;
bool xe8_silent = true;
u8 xec_readState = 0; // 0: NoRead 1: Read 2: ReadWrap
std::optional<CDvdFile> m_file;
std::shared_ptr<IDvdRequest> m_readReqs[2];
void ReadBuffer(int buf) {
u32 halfSize = xd8_ringBytes / 2;
u8* data = xd4_ringBuffer.get() + (buf ? halfSize : 0);
if (x10_info.x10_loopFlag) {
u32 remFileBytes = x10_info.x18_loopEndByte - xcc_fileCur;
if (remFileBytes < halfSize) {
// printf("Buffering %d from %d into %d\n", remFileBytes, xcc_fileCur + x10_info.x8_headerSize, buf);
m_file->AsyncSeekRead(data, remFileBytes, ESeekOrigin::Begin, xcc_fileCur + x10_info.x8_headerSize);
xcc_fileCur = x10_info.x14_loopStartByte;
u32 remBytes = halfSize - remFileBytes;
// printf("Loop Buffering %d from %d into %d\n", remBytes, xcc_fileCur + x10_info.x8_headerSize, buf);
m_readReqs[buf] = m_file->AsyncSeekRead(data + remFileBytes, remBytes, ESeekOrigin::Begin,
xcc_fileCur + x10_info.x8_headerSize);
xcc_fileCur += remBytes;
} else {
// printf("Buffering %d from %d into %d\n", halfSize, xcc_fileCur + x10_info.x8_headerSize, buf);
m_readReqs[buf] =
m_file->AsyncSeekRead(data, halfSize, ESeekOrigin::Begin, xcc_fileCur + x10_info.x8_headerSize);
xcc_fileCur += halfSize;
}
} else {
if (xcc_fileCur == x10_info.xc_adpcmBytes) {
memset(data, 0, halfSize);
return;
}
u32 remFileBytes = x10_info.xc_adpcmBytes - xcc_fileCur;
if (remFileBytes < halfSize) {
// printf("Buffering %d from %d into %d\n", remFileBytes, xcc_fileCur + x10_info.x8_headerSize, buf);
m_readReqs[buf] =
m_file->AsyncSeekRead(data, remFileBytes, ESeekOrigin::Begin, xcc_fileCur + x10_info.x8_headerSize);
memset(data + remFileBytes, 0, halfSize - remFileBytes);
xcc_fileCur = x10_info.xc_adpcmBytes;
} else {
// printf("Buffering %d from %d into %d\n", halfSize, xcc_fileCur + x10_info.x8_headerSize, buf);
m_readReqs[buf] =
m_file->AsyncSeekRead(data, halfSize, ESeekOrigin::Begin, xcc_fileCur + x10_info.x8_headerSize);
xcc_fileCur += halfSize;
}
}
}
bool BufferStream() {
if (xec_readState == 0) {
ReadBuffer(0);
ReadBuffer(1);
xec_readState = 1;
return false;
} else if (xec_readState == 1) {
if (m_readReqs[0]->IsComplete()) {
xe0_curBuffer = 0;
xec_readState = 2;
return true;
} else {
return false;
}
} else if (xec_readState == 2) {
if (xe0_curBuffer == 1 && m_readReqs[0]->IsComplete()) {
xe0_curBuffer = 0;
ReadBuffer(1);
return true;
} else if (xe0_curBuffer == 0 && m_readReqs[1]->IsComplete()) {
xe0_curBuffer = 1;
ReadBuffer(0);
return true;
}
}
return false;
}
unsigned m_curSample = 0;
unsigned m_totalSamples = 0;
s16 m_prev1 = 0;
s16 m_prev2 = 0;
void preSupplyAudio(boo::IAudioVoice&, double) override {}
unsigned decompressChunk(unsigned readToSample, int16_t*& data) {
unsigned startSamp = m_curSample;
auto sampDiv = std::div(int(m_curSample), int(14));
if (sampDiv.rem) {
unsigned samps = DSPDecompressFrameRanged(data, xd4_ringBuffer.get() + sampDiv.quot * 8, x10_info.x1c_coef,
&m_prev1, &m_prev2, unsigned(sampDiv.rem), readToSample - m_curSample);
m_curSample += samps;
data += samps;
++sampDiv.quot;
}
while (m_curSample < readToSample) {
unsigned samps = DSPDecompressFrame(data, xd4_ringBuffer.get() + sampDiv.quot * 8, x10_info.x1c_coef, &m_prev1,
&m_prev2, readToSample - m_curSample);
m_curSample += samps;
data += samps;
++sampDiv.quot;
}
return m_curSample - startSamp;
}
size_t supplyAudio(boo::IAudioVoice&, size_t frames, int16_t* data) override {
if (!x0_active) {
memset(data, 0, frames * 2);
return frames;
}
if (xe8_silent) {
StopStream();
memset(data, 0, frames * 2);
return frames;
}
unsigned halfRingSamples = xdc_ringSamples / 2;
size_t remFrames = frames;
while (remFrames) {
if (xec_readState != 2 || (xe0_curBuffer == 0 && m_curSample >= halfRingSamples)) {
if (!BufferStream()) {
memset(data, 0, remFrames * 2);
return frames;
}
}
unsigned readToSample =
std::min(m_curSample + unsigned(remFrames), (m_curSample / halfRingSamples + 1) * halfRingSamples);
if (!x10_info.x10_loopFlag) {
m_totalSamples += remFrames;
size_t fileSamples = x10_info.xc_adpcmBytes * 14 / 8;
if (m_totalSamples >= fileSamples) {
size_t leftover = m_totalSamples - fileSamples;
readToSample -= leftover;
remFrames -= leftover;
memset(data + remFrames, 0, leftover * 2);
StopStream();
}
}
unsigned leftoverSamples = 0;
if (readToSample > xdc_ringSamples) {
leftoverSamples = readToSample - xdc_ringSamples;
readToSample = xdc_ringSamples;
}
remFrames -= decompressChunk(readToSample, data);
if (leftoverSamples) {
BufferStream();
m_curSample = 0;
remFrames -= decompressChunk(leftoverSamples, data);
}
}
return frames;
}
boo::ObjToken<boo::IAudioVoice> m_booVoice;
void DoAllocateStream() {
xd4_ringBuffer.reset(new u8[0x11DC0]);
m_booVoice = CAudioSys::GetVoiceEngine()->allocateNewMonoVoice(32000.0, this);
}
static void Initialize() {
for (int i = 0; i < 4; ++i) {
SDSPStream& stream = g_Streams[i];
stream.x0_active = false;
stream.xd4_ringBuffer.reset();
stream.xd8_ringBytes = 0x11DC0;
stream.xdc_ringSamples = 0x1f410;
if (i < 2) {
stream.x1_oneshot = false;
stream.DoAllocateStream();
} else {
stream.x1_oneshot = true;
}
}
}
static void FreeAllStreams() {
for (int i = 0; i < 4; ++i) {
SDSPStream& stream = g_Streams[i];
stream.m_booVoice.reset();
stream.x0_active = false;
for (int j = 0; j < 2; ++j)
if (stream.m_readReqs[j]) {
stream.m_readReqs[j]->PostCancelRequest();
stream.m_readReqs[j].reset();
}
stream.xd4_ringBuffer.reset();
stream.m_file = std::nullopt;
}
}
static s32 PickFreeStream(SDSPStream*& streamOut, bool oneshot) {
for (int i = 0; i < 4; ++i) {
SDSPStream& stream = g_Streams[i];
if (stream.x0_active || stream.x1_oneshot != oneshot)
continue;
stream.x0_active = true;
stream.x4_ownerId = ++s_HandleCounter2;
if (stream.x4_ownerId == -1)
stream.x4_ownerId = ++s_HandleCounter2;
stream.x8_stereoLeft = nullptr;
stream.xc_companionRight = nullptr;
streamOut = &stream;
return stream.x4_ownerId;
}
return -1;
}
static s32 FindStreamIdx(s32 id) {
for (s32 i = 0; i < 4; ++i) {
SDSPStream& stream = g_Streams[i];
if (stream.x4_ownerId == id)
return i;
}
return -1;
}
void UpdateStreamVolume(float vol) {
x4c_vol = vol;
if (!x0_active || xe8_silent)
return;
float coefs[8] = {};
coefs[int(boo::AudioChannel::FrontLeft)] = m_leftgain * vol;
coefs[int(boo::AudioChannel::FrontRight)] = m_rightgain * vol;
m_booVoice->setMonoChannelLevels(nullptr, coefs, true);
}
static void UpdateVolume(s32 id, float vol) {
s32 idx = FindStreamIdx(id);
if (idx == -1)
return;
SDSPStream& stream = g_Streams[idx];
stream.UpdateStreamVolume(vol);
if (SDSPStream* left = stream.x8_stereoLeft)
left->UpdateStreamVolume(vol);
if (SDSPStream* right = stream.xc_companionRight)
right->UpdateStreamVolume(vol);
}
void SilenceStream() {
if (!x0_active || xe8_silent)
return;
float coefs[8] = {};
m_booVoice->setMonoChannelLevels(nullptr, coefs, true);
xe8_silent = true;
x0_active = false;
}
static void Silence(s32 id) {
s32 idx = FindStreamIdx(id);
if (idx == -1)
return;
SDSPStream& stream = g_Streams[idx];
stream.SilenceStream();
if (SDSPStream* left = stream.x8_stereoLeft)
left->SilenceStream();
if (SDSPStream* right = stream.xc_companionRight)
right->SilenceStream();
}
void StopStream() {
x0_active = false;
m_booVoice->stop();
m_file = std::nullopt;
}
static bool IsStreamActive(s32 id) {
s32 idx = FindStreamIdx(id);
if (idx == -1)
return false;
SDSPStream& stream = g_Streams[idx];
return stream.x0_active;
}
static bool IsStreamAvailable(s32 id) {
s32 idx = FindStreamIdx(id);
if (idx == -1)
return false;
SDSPStream& stream = g_Streams[idx];
return !stream.x0_active;
}
static s32 AllocateMono(const SDSPStreamInfo& info, float vol, bool oneshot) {
SDSPStream* stream;
s32 id = PickFreeStream(stream, oneshot);
if (id == -1)
return -1;
/* -3dB pan law for mono */
stream->AllocateStream(info, vol, 0.707f, 0.707f);
return id;
}
static s32 AllocateStereo(const SDSPStreamInfo& linfo, const SDSPStreamInfo& rinfo, float vol, bool oneshot) {
SDSPStream* lstream;
s32 lid = PickFreeStream(lstream, oneshot);
if (lid == -1)
return -1;
SDSPStream* rstream;
if (PickFreeStream(rstream, oneshot) == -1)
return -1;
rstream->x8_stereoLeft = lstream;
lstream->xc_companionRight = rstream;
lstream->AllocateStream(linfo, vol, 1.f, 0.f);
rstream->AllocateStream(rinfo, vol, 0.f, 1.f);
return lid;
}
void AllocateStream(const SDSPStreamInfo& info, float vol, float left, float right) {
x10_info = info;
m_file.emplace(x10_info.x0_fileName);
if (!xd4_ringBuffer)
DoAllocateStream();
for (int j = 0; j < 2; ++j)
if (m_readReqs[j]) {
m_readReqs[j]->PostCancelRequest();
m_readReqs[j].reset();
}
x4c_vol = vol;
m_leftgain = left;
m_rightgain = right;
xe8_silent = false;
xec_readState = 0;
xe0_curBuffer = -1;
xd8_ringBytes = 0x11DC0;
xdc_ringSamples = 0x1f410;
xcc_fileCur = 0;
m_curSample = 0;
m_totalSamples = 0;
m_prev1 = 0;
m_prev2 = 0;
memset(xd4_ringBuffer.get(), 0, 0x11DC0);
m_booVoice->resetSampleRate(info.x4_sampleRate);
m_booVoice->start();
UpdateStreamVolume(vol);
}
static SDSPStream g_Streams[4];
};
SDSPStream SDSPStream::g_Streams[4] = {};
class CDSPStreamManager {
friend struct SDSPStreamInfo;
public:
enum class EState { Looping, Oneshot, Preparing };
private:
dspadpcm_header x0_header;
std::string x60_fileName; // arg1
union {
u32 dummy = 0;
struct {
bool x70_24_unclaimed : 1;
bool x70_25_headerReadCancelled : 1;
u8 x70_26_headerReadState : 2; // 0: not read 1: reading 2: read
};
};
s8 x71_companionRight = -1;
s8 x72_companionLeft = -1;
float x73_volume = 0.f;
bool x74_oneshot;
s32 x78_handleId = -1; // arg2
s32 x7c_streamId = -1;
std::shared_ptr<IDvdRequest> m_dvdReq;
// DVDFileInfo x80_dvdHandle;
static CDSPStreamManager g_Streams[4];
public:
CDSPStreamManager() { x70_24_unclaimed = true; }
CDSPStreamManager(std::string_view fileName, s32 handle, float volume, bool oneshot)
: x60_fileName(fileName), x73_volume(volume), x74_oneshot(oneshot), x78_handleId(handle) {
if (!CDvdFile::FileExists(fileName))
x70_24_unclaimed = true;
}
static s32 FindUnclaimedStreamIdx() {
for (s32 i = 0; i < 4; ++i) {
CDSPStreamManager& stream = g_Streams[i];
if (stream.x70_24_unclaimed)
return i;
}
return -1;
}
static bool FindUnclaimedStereoPair(s32& left, s32& right) {
s32 idx = FindUnclaimedStreamIdx();
for (s32 i = 0; i < 4; ++i) {
CDSPStreamManager& stream = g_Streams[i];
if (stream.x70_24_unclaimed && idx != i) {
left = idx;
right = i;
return true;
}
}
return false;
}
static s32 FindClaimedStreamIdx(s32 handle) {
for (s32 i = 0; i < 4; ++i) {
CDSPStreamManager& stream = g_Streams[i];
if (!stream.x70_24_unclaimed && stream.x78_handleId == handle)
return i;
}
return -1;
}
static s32 GetFreeHandleId() {
s32 handle;
bool good;
do {
good = true;
handle = ++s_HandleCounter;
if (handle == -1) {
good = false;
continue;
}
for (int i = 0; i < 4; ++i) {
CDSPStreamManager& stream = g_Streams[i];
if (!stream.x70_24_unclaimed && stream.x78_handleId == handle) {
good = false;
break;
}
}
} while (!good);
return handle;
}
static EState GetStreamState(s32 handle) {
s32 idx = FindClaimedStreamIdx(handle);
if (idx == -1)
return EState::Oneshot;
CDSPStreamManager& stream = g_Streams[idx];
switch (stream.x70_26_headerReadState) {
case 0:
return EState::Oneshot;
case 2:
return EState(!stream.x0_header.xc_loop_flag);
default:
return EState::Preparing;
}
}
static bool CanStop(s32 handle) {
s32 idx = FindClaimedStreamIdx(handle);
if (idx == -1)
return true;
CDSPStreamManager& stream = g_Streams[idx];
if (stream.x70_26_headerReadState == 1)
return false;
if (stream.x7c_streamId == -1)
return true;
return !SDSPStream::IsStreamActive(stream.x7c_streamId);
}
static bool IsStreamAvailable(s32 handle) {
s32 idx = FindClaimedStreamIdx(handle);
if (idx == -1)
return false;
CDSPStreamManager& stream = g_Streams[idx];
if (stream.x70_26_headerReadState == 1)
return false;
if (stream.x7c_streamId == -1)
return false;
return SDSPStream::IsStreamAvailable(stream.x7c_streamId);
}
static void AllocateStream(s32 idx) {
CDSPStreamManager& stream = g_Streams[idx];
SDSPStreamInfo info(stream);
if (stream.x71_companionRight == -1) {
/* Mono */
if (!stream.x70_25_headerReadCancelled)
stream.x7c_streamId = SDSPStream::AllocateMono(info, stream.x73_volume, stream.x74_oneshot);
if (stream.x7c_streamId == -1)
stream = CDSPStreamManager();
} else {
/* Stereo */
CDSPStreamManager& rstream = g_Streams[stream.x71_companionRight];
SDSPStreamInfo rinfo(rstream);
if (!stream.x70_25_headerReadCancelled)
stream.x7c_streamId = SDSPStream::AllocateStereo(info, rinfo, stream.x73_volume, stream.x74_oneshot);
if (stream.x7c_streamId == -1) {
stream = CDSPStreamManager();
rstream = CDSPStreamManager();
}
}
}
void HeaderReadComplete() {
s32 selfIdx = -1;
for (int i = 0; i < 4; ++i) {
if (this == &g_Streams[i]) {
selfIdx = i;
break;
}
}
if (x70_24_unclaimed || selfIdx == -1) {
*this = CDSPStreamManager();
return;
}
x70_26_headerReadState = 2;
s32 companion = -1;
if (x72_companionLeft != -1)
companion = x72_companionLeft;
else if (x71_companionRight != -1)
companion = x71_companionRight;
if (companion != -1) {
/* Stereo */
CDSPStreamManager& companionStream = g_Streams[companion];
if (companionStream.x70_24_unclaimed || companionStream.x70_26_headerReadState == 0 ||
(companionStream.x71_companionRight != selfIdx && companionStream.x72_companionLeft != selfIdx)) {
/* No consistent companion available */
*this = CDSPStreamManager();
return;
}
/* Companion is pending; its completion will continue */
if (companionStream.x70_26_headerReadState == 1)
return;
/* Use whichever stream is the left channel */
if (companionStream.x71_companionRight != -1)
AllocateStream(companion);
else
AllocateStream(selfIdx);
} else {
/* Mono */
AllocateStream(selfIdx);
}
}
static void PollHeaderReadCompletions() {
for (int i = 0; i < 4; ++i) {
CDSPStreamManager& stream = g_Streams[i];
if (stream.m_dvdReq && stream.m_dvdReq->IsComplete()) {
stream.m_dvdReq.reset();
stream.HeaderReadComplete();
}
}
}
static bool StartMonoHeaderRead(CDSPStreamManager& stream) {
if (stream.x70_26_headerReadState != 0 || stream.x70_24_unclaimed)
return false;
CDvdFile file(stream.x60_fileName);
if (!file)
return false;
stream.x70_26_headerReadState = 1;
stream.m_dvdReq = file.AsyncRead(&stream.x0_header, sizeof(dspadpcm_header));
return true;
}
static bool StartStereoHeaderRead(CDSPStreamManager& lstream, CDSPStreamManager& rstream) {
if (lstream.x70_26_headerReadState != 0 || lstream.x70_24_unclaimed || rstream.x70_26_headerReadState != 0 ||
rstream.x70_24_unclaimed)
return false;
CDvdFile lfile(lstream.x60_fileName);
if (!lfile)
return false;
CDvdFile rfile(rstream.x60_fileName);
if (!rfile)
return false;
lstream.x70_26_headerReadState = 1;
rstream.x70_26_headerReadState = 1;
lstream.m_dvdReq = lfile.AsyncRead(&lstream.x0_header, sizeof(dspadpcm_header));
rstream.m_dvdReq = rfile.AsyncRead(&rstream.x0_header, sizeof(dspadpcm_header));
return true;
}
void WaitForReadCompletion() {
if (std::shared_ptr<IDvdRequest> req = m_dvdReq)
req->WaitUntilComplete();
m_dvdReq.reset();
}
static s32 StartStreaming(std::string_view fileName, float volume, bool oneshot) {
auto pipePos = fileName.find('|');
if (pipePos == std::string::npos) {
/* Mono stream */
s32 idx = FindUnclaimedStreamIdx();
if (idx == -1)
return -1;
s32 handle = GetFreeHandleId();
CDSPStreamManager tmpStream(fileName, handle, volume, oneshot);
if (tmpStream.x70_24_unclaimed)
return -1;
CDSPStreamManager& stream = g_Streams[idx];
stream = tmpStream;
if (!StartMonoHeaderRead(stream)) {
stream.x70_25_headerReadCancelled = true;
stream.WaitForReadCompletion();
stream = CDSPStreamManager();
return -1;
}
return handle;
} else {
/* Stereo stream */
s32 leftIdx = 0;
s32 rightIdx = 0;
if (!FindUnclaimedStereoPair(leftIdx, rightIdx))
return -1;
std::string leftFile(fileName.begin(), fileName.begin() + pipePos);
std::string rightFile(fileName.begin() + pipePos + 1, fileName.end());
s32 leftHandle = GetFreeHandleId();
s32 rightHandle = GetFreeHandleId();
CDSPStreamManager tmpLeftStream(leftFile, leftHandle, volume, oneshot);
CDSPStreamManager tmpRightStream(rightFile, rightHandle, volume, oneshot);
if (tmpLeftStream.x70_24_unclaimed || tmpRightStream.x70_24_unclaimed)
return -1;
tmpLeftStream.x71_companionRight = s8(rightIdx);
tmpRightStream.x72_companionLeft = s8(leftIdx);
CDSPStreamManager& leftStream = g_Streams[leftIdx];
CDSPStreamManager& rightStream = g_Streams[rightIdx];
leftStream = tmpLeftStream;
rightStream = tmpRightStream;
if (!StartStereoHeaderRead(leftStream, rightStream)) {
leftStream.x70_25_headerReadCancelled = true;
rightStream.x70_25_headerReadCancelled = true;
leftStream.WaitForReadCompletion();
leftStream.WaitForReadCompletion();
leftStream = CDSPStreamManager();
rightStream = CDSPStreamManager();
return -1;
}
return leftHandle;
}
}
static void StopStreaming(s32 handle) {
s32 idx = FindClaimedStreamIdx(handle);
if (idx == -1)
return;
CDSPStreamManager& stream = g_Streams[idx];
if (stream.x70_24_unclaimed)
return;
if (stream.x70_26_headerReadState == 1) {
stream.x70_25_headerReadCancelled = true;
return;
}
if (stream.x71_companionRight != -1)
g_Streams[stream.x71_companionRight] = CDSPStreamManager();
SDSPStream::Silence(stream.x7c_streamId);
stream = CDSPStreamManager();
}
static void UpdateVolume(s32 handle, float volume) {
s32 idx = FindClaimedStreamIdx(handle);
if (idx == -1)
return;
CDSPStreamManager& stream = g_Streams[idx];
stream.x73_volume = volume;
if (stream.x7c_streamId == -1)
return;
SDSPStream::UpdateVolume(stream.x7c_streamId, volume);
}
static void Initialize() {
SDSPStream::Initialize();
for (int i = 0; i < 4; ++i) {
CDSPStreamManager& stream = g_Streams[i];
stream = CDSPStreamManager();
}
}
static void Shutdown() {
SDSPStream::FreeAllStreams();
for (int i = 0; i < 4; ++i) {
CDSPStreamManager& stream = g_Streams[i];
stream = CDSPStreamManager();
}
}
};
CDSPStreamManager CDSPStreamManager::g_Streams[4] = {};
SDSPStreamInfo::SDSPStreamInfo(const CDSPStreamManager& stream) {
x0_fileName = stream.x60_fileName.c_str();
x4_sampleRate = hecl::SBig(stream.x0_header.x8_sample_rate);
xc_adpcmBytes = (hecl::SBig(stream.x0_header.x4_num_nibbles) / 2) & 0x7FFFFFE0;
if (stream.x0_header.xc_loop_flag) {
u32 loopStartNibble = hecl::SBig(stream.x0_header.x10_loop_start_nibble);
u32 loopEndNibble = hecl::SBig(stream.x0_header.x14_loop_end_nibble);
x10_loopFlag = true;
x14_loopStartByte = (loopStartNibble / 2) & 0x7FFFFFE0;
x18_loopEndByte = std::min((loopEndNibble / 2) & 0x7FFFFFE0, xc_adpcmBytes);
} else {
x10_loopFlag = false;
x14_loopStartByte = 0;
x18_loopEndByte = 0;
}
for (int i = 0; i < 8; ++i) {
x1c_coef[i][0] = hecl::SBig(stream.x0_header.x1c_coef[i][0]);
x1c_coef[i][1] = hecl::SBig(stream.x0_header.x1c_coef[i][1]);
}
}
enum class EPlayerState { Stopped, FadeIn, Playing, FadeOut, FadeOutNoStop };
struct SDSPPlayer {
std::string x0_fileName;
EPlayerState x10_playState = EPlayerState::Stopped;
float x14_volume = 0.f;
float x18_fadeIn = 0.f;
float x1c_fadeOut = 0.f;
s32 x20_internalHandle = -1;
float x24_fadeFactor = 0.f;
bool x28_music = true;
SDSPPlayer() = default;
SDSPPlayer(EPlayerState playing, std::string_view fileName, float volume, float fadeIn, float fadeOut, s32 handle,
bool music)
: x0_fileName(fileName)
, x10_playState(playing)
, x14_volume(volume)
, x18_fadeIn(fadeIn)
, x1c_fadeOut(fadeOut)
, x20_internalHandle(handle)
, x28_music(music) {}
};
static SDSPPlayer s_Players[2]; // looping, oneshot
static SDSPPlayer s_QueuedPlayers[2]; // looping, oneshot
float CStreamAudioManager::GetTargetDSPVolume(float fileVol, bool music) {
if (music)
return g_MusicUnmute ? (g_MusicVolume * fileVol / 127.f) : 0.f;
else
return g_SfxUnmute ? (g_SfxVolume * fileVol / 127.f) : 0.f;
}
void CStreamAudioManager::Start(bool oneshot, std::string_view fileName, float volume, bool music, float fadeIn,
float fadeOut) {
SDSPPlayer& p = s_Players[oneshot];
SDSPPlayer& qp = s_QueuedPlayers[oneshot];
if (p.x10_playState != EPlayerState::Stopped && !CStringExtras::CompareCaseInsensitive(fileName, p.x0_fileName)) {
/* Enque new stream */
qp = SDSPPlayer(EPlayerState::FadeIn, fileName, volume, fadeIn, fadeOut, -1, music);
Stop(oneshot, p.x0_fileName);
} else if (p.x10_playState != EPlayerState::Stopped) {
/* Fade existing stream back in */
p.x18_fadeIn = fadeIn;
p.x1c_fadeOut = fadeOut;
p.x14_volume = volume;
if (p.x18_fadeIn <= FLT_EPSILON) {
CDSPStreamManager::UpdateVolume(p.x20_internalHandle, GetTargetDSPVolume(p.x14_volume, p.x28_music));
p.x24_fadeFactor = 1.f;
p.x10_playState = EPlayerState::Playing;
} else {
p.x10_playState = EPlayerState::FadeIn;
}
} else {
/* Start new stream */
EPlayerState state;
float vol;
if (fadeIn > 0.f) {
state = EPlayerState::FadeIn;
vol = 0.f;
} else {
state = EPlayerState::Playing;
vol = volume;
}
s32 handle = CDSPStreamManager::StartStreaming(fileName, GetTargetDSPVolume(vol, music), oneshot);
if (handle != -1)
p = SDSPPlayer(state, fileName, volume, fadeIn, fadeOut, handle, music);
}
}
void CStreamAudioManager::Stop(bool oneshot, std::string_view fileName) {
SDSPPlayer& p = s_Players[oneshot];
SDSPPlayer& qp = s_QueuedPlayers[oneshot];
if (CStringExtras::CompareCaseInsensitive(fileName, qp.x0_fileName)) {
/* Cancel enqueued file */
qp = SDSPPlayer();
} else if (CStringExtras::CompareCaseInsensitive(fileName, p.x0_fileName) && p.x20_internalHandle != -1 &&
p.x10_playState != EPlayerState::Stopped) {
/* Fade out or stop */
if (p.x1c_fadeOut <= FLT_EPSILON)
StopStreaming(oneshot);
else
p.x10_playState = EPlayerState::FadeOut;
}
}
void CStreamAudioManager::FadeBackIn(bool oneshot, float fadeTime) {
SDSPPlayer& p = s_Players[oneshot];
if (p.x10_playState == EPlayerState::Stopped || p.x10_playState == EPlayerState::Playing)
return;
p.x18_fadeIn = fadeTime;
p.x10_playState = EPlayerState::FadeIn;
}
void CStreamAudioManager::TemporaryFadeOut(bool oneshot, float fadeTime) {
SDSPPlayer& p = s_Players[oneshot];
if (p.x10_playState == EPlayerState::FadeOut || p.x10_playState == EPlayerState::Stopped)
return;
p.x1c_fadeOut = fadeTime;
p.x10_playState = EPlayerState::FadeOutNoStop;
}
void CStreamAudioManager::StopStreaming(bool oneshot) {
SDSPPlayer& p = s_Players[oneshot];
p.x10_playState = EPlayerState::Stopped;
CDSPStreamManager::StopStreaming(p.x20_internalHandle);
p.x24_fadeFactor = 0.f;
p.x20_internalHandle = -1;
}
void CStreamAudioManager::UpdateDSP(bool oneshot, float dt) {
SDSPPlayer& p = s_Players[oneshot];
if (p.x10_playState == EPlayerState::Stopped) {
SDSPPlayer& qp = s_QueuedPlayers[oneshot];
if (qp.x10_playState != EPlayerState::Stopped) {
Start(oneshot, qp.x0_fileName, qp.x14_volume, qp.x28_music, qp.x18_fadeIn, qp.x1c_fadeOut);
qp = SDSPPlayer();
}
} else {
if (p.x10_playState != EPlayerState::Stopped &&
CDSPStreamManager::GetStreamState(p.x20_internalHandle) == CDSPStreamManager::EState::Oneshot &&
CDSPStreamManager::CanStop(p.x20_internalHandle)) {
StopStreaming(oneshot);
return;
}
if ((p.x10_playState != EPlayerState::FadeIn && p.x10_playState != EPlayerState::FadeOut &&
p.x10_playState != EPlayerState::FadeOutNoStop)) {
if (p.x10_playState == EPlayerState::Playing)
CDSPStreamManager::UpdateVolume(p.x20_internalHandle, GetTargetDSPVolume(p.x14_volume, p.x28_music));
return;
}
if (p.x10_playState == EPlayerState::FadeIn) {
float newFadeFactor = p.x24_fadeFactor + dt / p.x18_fadeIn;
if (newFadeFactor >= 1.f) {
p.x24_fadeFactor = 1.f;
p.x10_playState = EPlayerState::Playing;
} else {
p.x24_fadeFactor = newFadeFactor;
}
} else if (p.x10_playState == EPlayerState::FadeOut || p.x10_playState == EPlayerState::FadeOutNoStop) {
float newFadeFactor = p.x24_fadeFactor - dt / p.x1c_fadeOut;
if (newFadeFactor <= 0.f) {
if (p.x10_playState == EPlayerState::FadeOutNoStop) {
p.x24_fadeFactor = 0.f;
} else {
StopStreaming(oneshot);
return;
}
} else {
p.x24_fadeFactor = newFadeFactor;
}
}
CDSPStreamManager::UpdateVolume(p.x20_internalHandle,
GetTargetDSPVolume(p.x14_volume * p.x24_fadeFactor, p.x28_music));
}
}
void CStreamAudioManager::UpdateDSPStreamers(float dt) {
UpdateDSP(false, dt);
UpdateDSP(true, dt);
}
void CStreamAudioManager::StopAllStreams() {
for (int i = 0; i < 2; ++i) {
StopStreaming(bool(i));
SDSPPlayer& p = s_Players[i];
SDSPPlayer& qp = s_QueuedPlayers[i];
p = SDSPPlayer();
qp = SDSPPlayer();
}
}
void CStreamAudioManager::Update(float dt) {
CDSPStreamManager::PollHeaderReadCompletions();
UpdateDSPStreamers(dt);
}
void CStreamAudioManager::StopAll() { StopAllStreams(); }
void CStreamAudioManager::SetMusicUnmute(bool unmute) { g_MusicUnmute = unmute; }
void CStreamAudioManager::SetSfxVolume(u8 volume) { g_SfxVolume = std::min(volume, u8(127)); }
void CStreamAudioManager::SetMusicVolume(u8 volume) { g_MusicVolume = std::min(volume, u8(127)); }
void CStreamAudioManager::Initialize() { CDSPStreamManager::Initialize(); }
void CStreamAudioManager::StopOneShot() {
CStreamAudioManager::StopStreaming(true);
SDSPPlayer& p = s_Players[1];
p = SDSPPlayer();
SDSPPlayer& qp = s_QueuedPlayers[1];
qp = SDSPPlayer();
}
void CStreamAudioManager::Shutdown() { CDSPStreamManager::Shutdown(); }
u8 CStreamAudioManager::g_MusicVolume = 0x7f;
u8 CStreamAudioManager::g_SfxVolume = 0x7f;
bool CStreamAudioManager::g_MusicUnmute = true;
bool CStreamAudioManager::g_SfxUnmute = true;
} // namespace urde
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