mirror of
https://github.com/ZDoom/gzdoom-gles.git
synced 2024-12-12 05:11:45 +00:00
a92f71917a
It should only guard the critical parts, like calling Stop() but can let Update and IsPlaying method work unhindered otherwise.
1012 lines
26 KiB
C++
1012 lines
26 KiB
C++
/*
|
|
** music_midistream.cpp
|
|
** Implements base class for MIDI and MUS streaming.
|
|
**
|
|
**---------------------------------------------------------------------------
|
|
** Copyright 2008 Randy Heit
|
|
** All rights reserved.
|
|
**
|
|
** Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions
|
|
** are met:
|
|
**
|
|
** 1. Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** 2. Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in the
|
|
** documentation and/or other materials provided with the distribution.
|
|
** 3. The name of the author may not be used to endorse or promote products
|
|
** derived from this software without specific prior written permission.
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
**---------------------------------------------------------------------------
|
|
**
|
|
*/
|
|
|
|
// HEADER FILES ------------------------------------------------------------
|
|
|
|
#include <string>
|
|
#include <algorithm>
|
|
#include <assert.h>
|
|
#include "zmusic/musinfo.h"
|
|
#include "mididevices/mididevice.h"
|
|
#include "midisources/midisource.h"
|
|
|
|
// MACROS ------------------------------------------------------------------
|
|
|
|
enum
|
|
{
|
|
MAX_TIME = (1000000/10) // Send out 1/10 of a sec of events at a time.
|
|
};
|
|
|
|
// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
|
|
|
|
// EXTERNAL DATA DECLARATIONS ----------------------------------------------
|
|
|
|
// PRIVATE DATA DEFINITIONS ------------------------------------------------
|
|
|
|
// Base class for streaming MUS and MIDI files ------------------------------
|
|
|
|
class MIDIStreamer : public MusInfo
|
|
{
|
|
public:
|
|
MIDIStreamer(EMidiDevice type, const char* args);
|
|
~MIDIStreamer();
|
|
|
|
void MusicVolumeChanged() override;
|
|
void Play(bool looping, int subsong) override;
|
|
void Pause() override;
|
|
void Resume() override;
|
|
void Stop() override;
|
|
bool IsPlaying() override;
|
|
bool IsMIDI() const override;
|
|
bool IsValid() const override;
|
|
bool SetSubsong(int subsong) override;
|
|
void Update() override;
|
|
std::string GetStats() override;
|
|
void ChangeSettingInt(const char* setting, int value) override;
|
|
void ChangeSettingNum(const char* setting, double value) override;
|
|
void ChangeSettingString(const char* setting, const char* value) override;
|
|
int ServiceEvent();
|
|
void SetMIDISource(MIDISource* _source);
|
|
bool ServiceStream(void* buff, int len) override;
|
|
SoundStreamInfo GetStreamInfo() const override;
|
|
|
|
int GetDeviceType() const override;
|
|
|
|
bool DumpWave(const char* filename, int subsong, int samplerate);
|
|
|
|
|
|
protected:
|
|
MIDIStreamer(const char* dumpname, EMidiDevice type);
|
|
|
|
void OutputVolume(uint32_t volume);
|
|
int FillBuffer(int buffer_num, int max_events, uint32_t max_time);
|
|
int FillStopBuffer(int buffer_num);
|
|
uint32_t* WriteStopNotes(uint32_t* events);
|
|
int VolumeControllerChange(int channel, int volume);
|
|
void SetTempo(int new_tempo);
|
|
void Precache();
|
|
void StartPlayback();
|
|
bool InitPlayback();
|
|
|
|
//void SetMidiSynth(MIDIDevice *synth);
|
|
|
|
|
|
static EMidiDevice SelectMIDIDevice(EMidiDevice devtype);
|
|
MIDIDevice* CreateMIDIDevice(EMidiDevice devtype, int samplerate);
|
|
|
|
static void Callback(void* userdata);
|
|
|
|
enum
|
|
{
|
|
SONG_MORE,
|
|
SONG_DONE,
|
|
SONG_ERROR
|
|
};
|
|
|
|
std::unique_ptr<MIDIDevice> MIDI;
|
|
uint32_t Events[2][MAX_MIDI_EVENTS * 3];
|
|
MidiHeader Buffer[2];
|
|
int BufferNum;
|
|
int EndQueued;
|
|
bool VolumeChanged;
|
|
bool Restarting;
|
|
bool InitialPlayback;
|
|
uint32_t NewVolume;
|
|
uint32_t Volume;
|
|
EMidiDevice DeviceType;
|
|
bool CallbackIsThreaded;
|
|
int LoopLimit;
|
|
std::string Args;
|
|
std::unique_ptr<MIDISource> source;
|
|
};
|
|
|
|
|
|
// PUBLIC DATA DEFINITIONS -------------------------------------------------
|
|
|
|
// CODE --------------------------------------------------------------------
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer Constructor
|
|
//
|
|
//==========================================================================
|
|
|
|
MIDIStreamer::MIDIStreamer(EMidiDevice type, const char *args)
|
|
:
|
|
DeviceType(type), Args(args)
|
|
{
|
|
memset(Buffer, 0, sizeof(Buffer));
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer Destructor
|
|
//
|
|
//==========================================================================
|
|
|
|
MIDIStreamer::~MIDIStreamer()
|
|
{
|
|
Stop();
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: IsMIDI
|
|
//
|
|
// You bet it is!
|
|
//
|
|
//==========================================================================
|
|
|
|
bool MIDIStreamer::IsMIDI() const
|
|
{
|
|
return true;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: IsValid
|
|
//
|
|
//==========================================================================
|
|
|
|
bool MIDIStreamer::IsValid() const
|
|
{
|
|
return source != nullptr && source->isValid();
|
|
}
|
|
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: SelectMIDIDevice static
|
|
//
|
|
// Select the MIDI device to play on
|
|
//
|
|
//==========================================================================
|
|
|
|
EMidiDevice MIDIStreamer::SelectMIDIDevice(EMidiDevice device)
|
|
{
|
|
/* MIDI are played as:
|
|
- OPL:
|
|
- if explicitly selected by $mididevice
|
|
- when snd_mididevice is -3 and no midi device is set for the song
|
|
|
|
- Timidity:
|
|
- if explicitly selected by $mididevice
|
|
- when snd_mididevice is -2 and no midi device is set for the song
|
|
|
|
- MMAPI (Win32 only):
|
|
- if explicitly selected by $mididevice (non-Win32 redirects this to Sound System)
|
|
- when snd_mididevice is >= 0 and no midi device is set for the song
|
|
- as fallback when both OPL and Timidity failed and snd_mididevice is >= 0
|
|
*/
|
|
|
|
// Choose the type of MIDI device we want.
|
|
if (device != MDEV_DEFAULT)
|
|
{
|
|
return device;
|
|
}
|
|
switch (miscConfig.snd_mididevice)
|
|
{
|
|
case -1: return MDEV_SNDSYS;
|
|
case -2: return MDEV_TIMIDITY;
|
|
case -3: return MDEV_OPL;
|
|
case -4: return MDEV_GUS;
|
|
case -5: return MDEV_FLUIDSYNTH;
|
|
case -6: return MDEV_WILDMIDI;
|
|
case -7: return MDEV_ADL;
|
|
case -8: return MDEV_OPN;
|
|
default:
|
|
#ifdef _WIN32
|
|
return MDEV_MMAPI;
|
|
#else
|
|
return MDEV_SNDSYS;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: CreateMIDIDevice
|
|
//
|
|
//==========================================================================
|
|
|
|
static EMidiDevice lastRequestedDevice, lastSelectedDevice;
|
|
|
|
MIDIDevice *MIDIStreamer::CreateMIDIDevice(EMidiDevice devtype, int samplerate)
|
|
{
|
|
bool checked[MDEV_COUNT] = { false };
|
|
|
|
MIDIDevice *dev = nullptr;
|
|
if (devtype == MDEV_SNDSYS) devtype = MDEV_FLUIDSYNTH;
|
|
EMidiDevice requestedDevice = devtype, selectedDevice;
|
|
while (dev == nullptr)
|
|
{
|
|
selectedDevice = devtype;
|
|
try
|
|
{
|
|
switch (devtype)
|
|
{
|
|
case MDEV_GUS:
|
|
dev = CreateTimidityMIDIDevice(Args.c_str(), samplerate);
|
|
break;
|
|
|
|
case MDEV_ADL:
|
|
dev = CreateADLMIDIDevice(Args.c_str());
|
|
break;
|
|
|
|
case MDEV_OPN:
|
|
dev = CreateOPNMIDIDevice(Args.c_str());
|
|
break;
|
|
|
|
case MDEV_MMAPI:
|
|
|
|
#ifdef _WIN32
|
|
dev = CreateWinMIDIDevice(std::max(0, miscConfig.snd_mididevice));
|
|
break;
|
|
#endif
|
|
// Intentional fall-through for non-Windows systems.
|
|
|
|
#ifdef HAVE_FLUIDSYNTH
|
|
case MDEV_FLUIDSYNTH:
|
|
dev = CreateFluidSynthMIDIDevice(samplerate, Args.c_str());
|
|
break;
|
|
#endif // HAVE_FLUIDSYNTH
|
|
|
|
case MDEV_OPL:
|
|
dev = CreateOplMIDIDevice(Args.c_str());
|
|
break;
|
|
|
|
case MDEV_TIMIDITY:
|
|
dev = CreateTimidityPPMIDIDevice(Args.c_str(), samplerate);
|
|
break;
|
|
|
|
case MDEV_WILDMIDI:
|
|
dev = CreateWildMIDIDevice(Args.c_str(), samplerate);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
catch (std::runtime_error &err)
|
|
{
|
|
//DPrintf(DMSG_WARNING, "%s\n", err.what());
|
|
checked[devtype] = true;
|
|
devtype = MDEV_DEFAULT;
|
|
// Opening the requested device did not work out so choose another one.
|
|
if (!checked[MDEV_FLUIDSYNTH]) devtype = MDEV_FLUIDSYNTH;
|
|
else if (!checked[MDEV_TIMIDITY]) devtype = MDEV_TIMIDITY;
|
|
else if (!checked[MDEV_WILDMIDI]) devtype = MDEV_WILDMIDI;
|
|
else if (!checked[MDEV_GUS]) devtype = MDEV_GUS;
|
|
#ifdef _WIN32
|
|
else if (!checked[MDEV_MMAPI]) devtype = MDEV_MMAPI;
|
|
#endif
|
|
else if (!checked[MDEV_OPL]) devtype = MDEV_OPL;
|
|
|
|
if (devtype == MDEV_DEFAULT)
|
|
{
|
|
std::string message = std::string(err.what()) + "\n\nFailed to play music: Unable to open any MIDI Device.";
|
|
throw std::runtime_error(message);
|
|
}
|
|
}
|
|
}
|
|
if (selectedDevice != requestedDevice && (selectedDevice != lastSelectedDevice || requestedDevice != lastRequestedDevice))
|
|
{
|
|
static const char *devnames[] = {
|
|
"Windows Default",
|
|
"OPL",
|
|
"",
|
|
"Timidity++",
|
|
"FluidSynth",
|
|
"GUS",
|
|
"WildMidi"
|
|
};
|
|
|
|
lastRequestedDevice = requestedDevice;
|
|
lastSelectedDevice = selectedDevice;
|
|
if (musicCallbacks.Fluid_MessageFunc)
|
|
musicCallbacks.Fluid_MessageFunc("Unable to create %s MIDI device. Falling back to %s\n", devnames[requestedDevice], devnames[selectedDevice]);
|
|
}
|
|
return dev;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: Play
|
|
//
|
|
//==========================================================================
|
|
|
|
void MIDIStreamer::Play(bool looping, int subsong)
|
|
{
|
|
EMidiDevice devtype;
|
|
|
|
if (source == nullptr) return; // We have nothing to play so abort.
|
|
|
|
assert(MIDI == NULL);
|
|
m_Looping = looping;
|
|
source->SetMIDISubsong(subsong);
|
|
devtype = SelectMIDIDevice(DeviceType);
|
|
MIDI.reset(CreateMIDIDevice(devtype, miscConfig.snd_outputrate));
|
|
InitPlayback();
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: DumpWave
|
|
//
|
|
//==========================================================================
|
|
|
|
bool MIDIStreamer::DumpWave(const char *filename, int subsong, int samplerate)
|
|
{
|
|
m_Looping = false;
|
|
if (source == nullptr) return false; // We have nothing to play so abort.
|
|
source->SetMIDISubsong(subsong);
|
|
|
|
assert(MIDI == NULL);
|
|
auto devtype = SelectMIDIDevice(DeviceType);
|
|
if (devtype == MDEV_MMAPI)
|
|
{
|
|
throw std::runtime_error("MMAPI device is not supported");
|
|
}
|
|
auto iMIDI = CreateMIDIDevice(devtype, samplerate);
|
|
auto writer = new MIDIWaveWriter(filename, static_cast<SoftSynthMIDIDevice*>(iMIDI));
|
|
MIDI.reset(writer);
|
|
bool res = InitPlayback();
|
|
if (!writer->CloseFile())
|
|
{
|
|
char buffer[80];
|
|
snprintf(buffer, 80, "Could not finish writing wave file: %s\n", strerror(errno));
|
|
throw std::runtime_error(buffer);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: InitPlayback
|
|
//
|
|
//==========================================================================
|
|
|
|
bool MIDIStreamer::InitPlayback()
|
|
{
|
|
m_Status = STATE_Stopped;
|
|
EndQueued = 0;
|
|
VolumeChanged = false;
|
|
Restarting = true;
|
|
InitialPlayback = true;
|
|
if (MIDI) MIDI->SetCallback(Callback, this);
|
|
|
|
if (MIDI == NULL || 0 != MIDI->Open())
|
|
{
|
|
throw std::runtime_error("Could not open MIDI out device");
|
|
}
|
|
|
|
source->CheckCaps(MIDI->GetTechnology());
|
|
if (!MIDI->CanHandleSysex()) source->SkipSysex();
|
|
|
|
StartPlayback();
|
|
if (MIDI == nullptr)
|
|
{ // The MIDI file had no content and has been automatically closed.
|
|
return false;
|
|
}
|
|
|
|
int res = MIDI->Resume();
|
|
|
|
if (res)
|
|
{
|
|
throw std::runtime_error("Starting MIDI playback failed");
|
|
}
|
|
else
|
|
{
|
|
m_Status = STATE_Playing;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
SoundStreamInfo MIDIStreamer::GetStreamInfo() const
|
|
{
|
|
if (MIDI) return MIDI->GetStreamInfo();
|
|
else return { 0, 0, 0 };
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: StartPlayback
|
|
//
|
|
//==========================================================================
|
|
|
|
void MIDIStreamer::StartPlayback()
|
|
{
|
|
auto data = source->PrecacheData();
|
|
MIDI->PrecacheInstruments(data.data(), (int)data.size());
|
|
source->StartPlayback(m_Looping);
|
|
|
|
// Set time division and tempo.
|
|
if (0 != MIDI->SetTimeDiv(source->getDivision()) ||
|
|
0 != MIDI->SetTempo(source->getInitialTempo()))
|
|
{
|
|
throw std::runtime_error("Setting MIDI stream speed failed");
|
|
}
|
|
|
|
MusicVolumeChanged(); // set volume to current music's properties
|
|
OutputVolume(Volume);
|
|
|
|
MIDI->InitPlayback();
|
|
|
|
// Fill the initial buffers for the song.
|
|
BufferNum = 0;
|
|
do
|
|
{
|
|
int res = FillBuffer(BufferNum, MAX_MIDI_EVENTS, MAX_TIME);
|
|
if (res == SONG_MORE)
|
|
{
|
|
if (0 != MIDI->StreamOutSync(&Buffer[BufferNum]))
|
|
{
|
|
throw std::runtime_error("Initial midiStreamOut failed");
|
|
}
|
|
BufferNum ^= 1;
|
|
}
|
|
else if (res == SONG_DONE)
|
|
{
|
|
// Do not play super short songs that can't fill the initial two buffers.
|
|
Stop();
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
Stop();
|
|
return;
|
|
}
|
|
}
|
|
while (BufferNum != 0);
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: Pause
|
|
//
|
|
// "Pauses" the song by setting it to zero volume and filling subsequent
|
|
// buffers with NOPs until the song is unpaused. A MIDI device that
|
|
// supports real pauses will return true from its Pause() method.
|
|
//
|
|
//==========================================================================
|
|
|
|
void MIDIStreamer::Pause()
|
|
{
|
|
if (m_Status == STATE_Playing)
|
|
{
|
|
m_Status = STATE_Paused;
|
|
if (!MIDI->Pause(true))
|
|
{
|
|
OutputVolume(0);
|
|
}
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: Resume
|
|
//
|
|
// "Unpauses" a song by restoring the volume and letting subsequent
|
|
// buffers store real MIDI events again.
|
|
//
|
|
//==========================================================================
|
|
|
|
void MIDIStreamer::Resume()
|
|
{
|
|
if (m_Status == STATE_Paused)
|
|
{
|
|
if (!MIDI->Pause(false))
|
|
{
|
|
OutputVolume(Volume);
|
|
}
|
|
m_Status = STATE_Playing;
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: Stop
|
|
//
|
|
// Stops playback and closes the player thread and MIDI device.
|
|
//
|
|
//==========================================================================
|
|
|
|
void MIDIStreamer::Stop()
|
|
{
|
|
EndQueued = 4;
|
|
|
|
if (MIDI != NULL && MIDI->IsOpen())
|
|
{
|
|
MIDI->Stop();
|
|
MIDI->UnprepareHeader(&Buffer[0]);
|
|
MIDI->UnprepareHeader(&Buffer[1]);
|
|
MIDI->Close();
|
|
}
|
|
if (MIDI != nullptr)
|
|
{
|
|
MIDI.reset();
|
|
}
|
|
m_Status = STATE_Stopped;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: IsPlaying
|
|
//
|
|
//==========================================================================
|
|
|
|
bool MIDIStreamer::IsPlaying()
|
|
{
|
|
if (m_Status != STATE_Stopped && (MIDI == NULL || (EndQueued != 0 && EndQueued < 4)))
|
|
{
|
|
std::lock_guard<std::mutex> lock(CritSec);
|
|
Stop();
|
|
}
|
|
if (m_Status != STATE_Stopped && !MIDI->IsOpen())
|
|
{
|
|
std::lock_guard<std::mutex> lock(CritSec);
|
|
Stop();
|
|
}
|
|
return m_Status != STATE_Stopped;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: MusicVolumeChanged
|
|
//
|
|
// WinMM MIDI doesn't go through the sound system, so the normal volume
|
|
// changing procedure doesn't work for it.
|
|
//
|
|
//==========================================================================
|
|
|
|
void MIDIStreamer::MusicVolumeChanged()
|
|
{
|
|
if (MIDI != NULL && MIDI->FakeVolume())
|
|
{
|
|
float realvolume = miscConfig.snd_musicvolume * miscConfig.relative_volume * miscConfig.snd_mastervolume;
|
|
if (realvolume < 0 || realvolume > 1) realvolume = 1;
|
|
Volume = (uint32_t)(realvolume * 65535.f);
|
|
}
|
|
else
|
|
{
|
|
Volume = 0xFFFF;
|
|
}
|
|
source->setVolume(Volume);
|
|
if (m_Status == STATE_Playing)
|
|
{
|
|
OutputVolume(Volume);
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: ChangeSettingInt
|
|
//
|
|
//==========================================================================
|
|
|
|
void MIDIStreamer::ChangeSettingInt(const char *setting, int value)
|
|
{
|
|
if (MIDI != NULL)
|
|
{
|
|
MIDI->ChangeSettingInt(setting, value);
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: ChangeSettingNum
|
|
//
|
|
//==========================================================================
|
|
|
|
void MIDIStreamer::ChangeSettingNum(const char *setting, double value)
|
|
{
|
|
if (MIDI != NULL)
|
|
{
|
|
MIDI->ChangeSettingNum(setting, value);
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIDeviceStreamer :: ChangeSettingString
|
|
//
|
|
//==========================================================================
|
|
|
|
void MIDIStreamer::ChangeSettingString(const char *setting, const char *value)
|
|
{
|
|
if (MIDI != NULL)
|
|
{
|
|
MIDI->ChangeSettingString(setting, value);
|
|
}
|
|
}
|
|
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: OutputVolume
|
|
//
|
|
// Signals the buffer filler to send volume change events on all channels.
|
|
//
|
|
//==========================================================================
|
|
|
|
void MIDIStreamer::OutputVolume (uint32_t volume)
|
|
{
|
|
if (MIDI != NULL && MIDI->FakeVolume())
|
|
{
|
|
NewVolume = volume;
|
|
VolumeChanged = true;
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: Callback Static
|
|
//
|
|
//==========================================================================
|
|
|
|
void MIDIStreamer::Callback(void *userdata)
|
|
{
|
|
MIDIStreamer *self = (MIDIStreamer *)userdata;
|
|
|
|
if (self->EndQueued >= 4)
|
|
{
|
|
return;
|
|
}
|
|
self->ServiceEvent();
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: Update
|
|
//
|
|
// Called periodically to see if the player thread is still alive. If it
|
|
// isn't, stop playback now.
|
|
//
|
|
//==========================================================================
|
|
|
|
void MIDIStreamer::Update()
|
|
{
|
|
if (MIDI != nullptr && !MIDI->Update())
|
|
{
|
|
std::lock_guard<std::mutex> lock(CritSec);
|
|
Stop();
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: ServiceEvent
|
|
//
|
|
// Fills the buffer that just finished playing with new events and appends
|
|
// it to the MIDI stream queue. Stops the song if playback is over. Returns
|
|
// non-zero if a problem occured and playback should stop.
|
|
//
|
|
//==========================================================================
|
|
|
|
int MIDIStreamer::ServiceEvent()
|
|
{
|
|
int res;
|
|
|
|
if (EndQueued == 2)
|
|
{
|
|
return 0;
|
|
}
|
|
if (0 != (res = MIDI->UnprepareHeader(&Buffer[BufferNum])))
|
|
{
|
|
return res;
|
|
}
|
|
fill:
|
|
if (EndQueued == 1)
|
|
{
|
|
res = FillStopBuffer(BufferNum);
|
|
if ((res & 3) != SONG_ERROR)
|
|
{
|
|
EndQueued = 2;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
res = FillBuffer(BufferNum, MAX_MIDI_EVENTS, MAX_TIME);
|
|
}
|
|
switch (res & 3)
|
|
{
|
|
case SONG_MORE:
|
|
res = MIDI->StreamOut(&Buffer[BufferNum]);
|
|
if (res != 0)
|
|
{
|
|
return res;
|
|
}
|
|
else
|
|
{
|
|
BufferNum ^= 1;
|
|
}
|
|
break;
|
|
|
|
case SONG_DONE:
|
|
if (m_Looping)
|
|
{
|
|
Restarting = true;
|
|
goto fill;
|
|
}
|
|
EndQueued = 1;
|
|
break;
|
|
|
|
default:
|
|
return res >> 2;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: FillBuffer
|
|
//
|
|
// Copies MIDI events from the MIDI file and puts them into a MIDI stream
|
|
// buffer. Filling the buffer stops when the song end is encountered, the
|
|
// buffer space is used up, or the maximum time for a buffer is hit.
|
|
//
|
|
// Can return:
|
|
// - SONG_MORE if the buffer was prepared with data.
|
|
// - SONG_DONE if the song's end was reached.
|
|
// The buffer will never have data in this case.
|
|
// - SONG_ERROR if there was a problem preparing the buffer.
|
|
//
|
|
//==========================================================================
|
|
|
|
int MIDIStreamer::FillBuffer(int buffer_num, int max_events, uint32_t max_time)
|
|
{
|
|
if (!Restarting && source->CheckDone())
|
|
{
|
|
return SONG_DONE;
|
|
}
|
|
|
|
int i;
|
|
uint32_t *events = Events[buffer_num], *max_event_p;
|
|
|
|
|
|
// The final event is for a NOP to hold the delay from the last event.
|
|
max_event_p = events + (max_events - 1) * 3;
|
|
|
|
if (InitialPlayback)
|
|
{
|
|
InitialPlayback = false;
|
|
// Send the GS System Reset SysEx message.
|
|
events[0] = 0; // dwDeltaTime
|
|
events[1] = 0; // dwStreamID
|
|
events[2] = (MEVENT_LONGMSG << 24) | 6; // dwEvent
|
|
events[3] = MAKE_ID(0xf0, 0x7e, 0x7f, 0x09); // dwParms[0]
|
|
events[4] = MAKE_ID(0x01, 0xf7, 0x00, 0x00); // dwParms[1]
|
|
events += 5;
|
|
|
|
// Send the full master volume SysEx message.
|
|
events[0] = 0; // dwDeltaTime
|
|
events[1] = 0; // dwStreamID
|
|
events[2] = (MEVENT_LONGMSG << 24) | 8; // dwEvent
|
|
events[3] = MAKE_ID(0xf0,0x7f,0x7f,0x04); // dwParms[0]
|
|
events[4] = MAKE_ID(0x01,0x7f,0x7f,0xf7); // dwParms[1]
|
|
events += 5;
|
|
source->DoInitialSetup();
|
|
}
|
|
|
|
// If the volume has changed, stick those events at the start of this buffer.
|
|
if (VolumeChanged && (m_Status != STATE_Paused || NewVolume == 0))
|
|
{
|
|
VolumeChanged = false;
|
|
for (i = 0; i < 16; ++i)
|
|
{
|
|
uint8_t courseVol = (uint8_t)(((source->getChannelVolume(i)+1) * NewVolume) >> 16);
|
|
events[0] = 0; // dwDeltaTime
|
|
events[1] = 0; // dwStreamID
|
|
events[2] = MIDI_CTRLCHANGE | i | (7<<8) | (courseVol<<16);
|
|
events += 3;
|
|
}
|
|
}
|
|
|
|
// Play nothing while paused.
|
|
if (m_Status == STATE_Paused)
|
|
{
|
|
// Be more responsive when unpausing by only playing each buffer
|
|
// for a third of the maximum time.
|
|
events[0] = std::max<uint32_t>(1, (max_time / 3) * source->getDivision() / source->getTempo());
|
|
events[1] = 0;
|
|
events[2] = MEVENT_NOP << 24;
|
|
events += 3;
|
|
}
|
|
else
|
|
{
|
|
if (Restarting)
|
|
{
|
|
Restarting = false;
|
|
// Reset the tempo to the inital value.
|
|
events[0] = 0; // dwDeltaTime
|
|
events[1] = 0; // dwStreamID
|
|
events[2] = (MEVENT_TEMPO << 24) | source->getInitialTempo(); // dwEvent
|
|
events += 3;
|
|
// Stop all notes in case any were left hanging.
|
|
events = WriteStopNotes(events);
|
|
source->DoRestart();
|
|
}
|
|
events = source->MakeEvents(events, max_event_p, max_time);
|
|
}
|
|
memset(&Buffer[buffer_num], 0, sizeof(MidiHeader));
|
|
Buffer[buffer_num].lpData = (uint8_t *)Events[buffer_num];
|
|
Buffer[buffer_num].dwBufferLength = uint32_t((uint8_t *)events - Buffer[buffer_num].lpData);
|
|
Buffer[buffer_num].dwBytesRecorded = Buffer[buffer_num].dwBufferLength;
|
|
if (0 != (i = MIDI->PrepareHeader(&Buffer[buffer_num])))
|
|
{
|
|
return SONG_ERROR | (i << 2);
|
|
}
|
|
return SONG_MORE;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: FillStopBuffer
|
|
//
|
|
// Fills a MIDI buffer with events to stop all channels.
|
|
//
|
|
//==========================================================================
|
|
|
|
int MIDIStreamer::FillStopBuffer(int buffer_num)
|
|
{
|
|
uint32_t *events = Events[buffer_num];
|
|
int i;
|
|
|
|
events = WriteStopNotes(events);
|
|
|
|
// wait some tics, just so that this buffer takes some time
|
|
events[0] = 500;
|
|
events[1] = 0;
|
|
events[2] = MEVENT_NOP << 24;
|
|
events += 3;
|
|
|
|
memset(&Buffer[buffer_num], 0, sizeof(MidiHeader));
|
|
Buffer[buffer_num].lpData = (uint8_t*)Events[buffer_num];
|
|
Buffer[buffer_num].dwBufferLength = uint32_t((uint8_t*)events - Buffer[buffer_num].lpData);
|
|
Buffer[buffer_num].dwBytesRecorded = Buffer[buffer_num].dwBufferLength;
|
|
if (0 != (i = MIDI->PrepareHeader(&Buffer[buffer_num])))
|
|
{
|
|
return SONG_ERROR | (i << 2);
|
|
}
|
|
return SONG_MORE;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: WriteStopNotes
|
|
//
|
|
// Generates MIDI events to stop all notes and reset controllers on
|
|
// every channel.
|
|
//
|
|
//==========================================================================
|
|
|
|
uint32_t *MIDIStreamer::WriteStopNotes(uint32_t *events)
|
|
{
|
|
for (int i = 0; i < 16; ++i)
|
|
{
|
|
events[0] = 0; // dwDeltaTime
|
|
events[1] = 0; // dwStreamID
|
|
events[2] = MIDI_CTRLCHANGE | i | (123 << 8); // All notes off
|
|
events[3] = 0;
|
|
events[4] = 0;
|
|
events[5] = MIDI_CTRLCHANGE | i | (121 << 8); // Reset controllers
|
|
events += 6;
|
|
}
|
|
return events;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
//
|
|
//
|
|
//==========================================================================
|
|
|
|
void MIDIStreamer::SetMIDISource(MIDISource *_source)
|
|
{
|
|
source.reset(_source);
|
|
source->setTempoCallback([=](int tempo) { return !!MIDI->SetTempo(tempo); } );
|
|
}
|
|
|
|
int MIDIStreamer::GetDeviceType() const
|
|
{
|
|
return nullptr == MIDI
|
|
? MusInfo::GetDeviceType()
|
|
: MIDI->GetDeviceType();
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: GetStats
|
|
//
|
|
//==========================================================================
|
|
|
|
std::string MIDIStreamer::GetStats()
|
|
{
|
|
if (MIDI == NULL)
|
|
{
|
|
return "No MIDI device in use.";
|
|
}
|
|
return MIDI->GetStats();
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: SetSubsong
|
|
//
|
|
// Selects which subsong to play in an already-playing file. This is public.
|
|
//
|
|
//==========================================================================
|
|
|
|
bool MIDIStreamer::SetSubsong(int subsong)
|
|
{
|
|
if (source->SetMIDISubsong(subsong))
|
|
{
|
|
Stop();
|
|
Play(m_Looping, subsong);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// MIDIStreamer :: FillStream
|
|
//
|
|
//==========================================================================
|
|
|
|
bool MIDIStreamer::ServiceStream(void* buff, int len)
|
|
{
|
|
if (!MIDI) return false;
|
|
return static_cast<SoftSynthMIDIDevice*>(MIDI.get())->ServiceStream(buff, len);
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// create a streamer
|
|
//
|
|
//==========================================================================
|
|
|
|
MusInfo* CreateMIDIStreamer(MIDISource *source, EMidiDevice devtype, const char* args)
|
|
{
|
|
auto me = new MIDIStreamer(devtype, args);
|
|
me->SetMIDISource(source);
|
|
return me;
|
|
}
|
|
|
|
void MIDIDumpWave(MIDISource* source, EMidiDevice devtype, const char *devarg, const char *outname, int subsong, int samplerate)
|
|
{
|
|
MIDIStreamer me(devtype, devarg);
|
|
me.SetMIDISource(source);
|
|
me.DumpWave(outname, subsong, samplerate);
|
|
}
|