mirror of
https://github.com/ZDoom/ZMusic.git
synced 2024-11-27 14:12:09 +00:00
419 lines
11 KiB
C++
419 lines
11 KiB
C++
/*
|
|
** music_softsynth_mididevice.cpp
|
|
** Common base class for software synthesis MIDI devices.
|
|
**
|
|
**---------------------------------------------------------------------------
|
|
** Copyright 2008-2010 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 <mutex>
|
|
#include <algorithm>
|
|
#include <assert.h>
|
|
#include "mididevice.h"
|
|
|
|
// MACROS ------------------------------------------------------------------
|
|
|
|
// TYPES -------------------------------------------------------------------
|
|
|
|
// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
|
|
|
|
// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
|
|
|
|
// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
|
|
|
|
// EXTERNAL DATA DECLARATIONS ----------------------------------------------
|
|
|
|
// PRIVATE DATA DEFINITIONS ------------------------------------------------
|
|
|
|
// PUBLIC DATA DEFINITIONS -------------------------------------------------
|
|
|
|
//CVAR(Bool, synth_watch, false, 0)
|
|
|
|
// CODE --------------------------------------------------------------------
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice Constructor
|
|
//
|
|
//==========================================================================
|
|
|
|
SoftSynthMIDIDevice::SoftSynthMIDIDevice(int samplerate, int minrate, int maxrate)
|
|
{
|
|
Tempo = 0;
|
|
Division = 0;
|
|
Events = NULL;
|
|
Started = false;
|
|
SampleRate = samplerate;
|
|
if (SampleRate < minrate || SampleRate > maxrate) SampleRate = 44100;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice Destructor
|
|
//
|
|
//==========================================================================
|
|
|
|
SoftSynthMIDIDevice::~SoftSynthMIDIDevice()
|
|
{
|
|
Close();
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: GetStreamInfoEx
|
|
//
|
|
//==========================================================================
|
|
|
|
SoundStreamInfoEx SoftSynthMIDIDevice::GetStreamInfoEx() const
|
|
{
|
|
int chunksize = (SampleRate / StreamBlockSize) * 4;
|
|
if (!isMono)
|
|
{
|
|
chunksize *= 2;
|
|
}
|
|
return { chunksize, SampleRate, SampleType_Float32,
|
|
isMono ? ChannelConfig_Mono : ChannelConfig_Stereo };
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: Open
|
|
//
|
|
//==========================================================================
|
|
|
|
int SoftSynthMIDIDevice::Open()
|
|
{
|
|
Tempo = 500000;
|
|
Division = 100;
|
|
CalcTickRate();
|
|
isOpen = true;
|
|
return OpenRenderer();
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: Close
|
|
//
|
|
//==========================================================================
|
|
|
|
void SoftSynthMIDIDevice::Close()
|
|
{
|
|
Started = false;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: IsOpen
|
|
//
|
|
//==========================================================================
|
|
|
|
bool SoftSynthMIDIDevice::IsOpen() const
|
|
{
|
|
return isOpen;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: GetTechnology
|
|
//
|
|
//==========================================================================
|
|
|
|
int SoftSynthMIDIDevice::GetTechnology() const
|
|
{
|
|
return MIDIDEV_SWSYNTH;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: SetTempo
|
|
//
|
|
//==========================================================================
|
|
|
|
int SoftSynthMIDIDevice::SetTempo(int tempo)
|
|
{
|
|
Tempo = tempo;
|
|
CalcTickRate();
|
|
return 0;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: SetTimeDiv
|
|
//
|
|
//==========================================================================
|
|
|
|
int SoftSynthMIDIDevice::SetTimeDiv(int timediv)
|
|
{
|
|
Division = timediv;
|
|
CalcTickRate();
|
|
return 0;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: CalcTickRate
|
|
//
|
|
// Tempo is the number of microseconds per quarter note.
|
|
// Division is the number of ticks per quarter note.
|
|
//
|
|
//==========================================================================
|
|
|
|
void SoftSynthMIDIDevice::CalcTickRate()
|
|
{
|
|
SamplesPerTick = SampleRate / (1000000.0 / Tempo) / Division;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: Resume
|
|
//
|
|
//==========================================================================
|
|
|
|
int SoftSynthMIDIDevice::Resume()
|
|
{
|
|
Started = 1;
|
|
return 0;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: Stop
|
|
//
|
|
//==========================================================================
|
|
|
|
void SoftSynthMIDIDevice::Stop()
|
|
{
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: StreamOutSync
|
|
//
|
|
// This version is called from the main game thread and needs to
|
|
// synchronize with the player thread.
|
|
//
|
|
//==========================================================================
|
|
|
|
int SoftSynthMIDIDevice::StreamOutSync(MidiHeader *header)
|
|
{
|
|
StreamOut(header);
|
|
return 0;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: StreamOut
|
|
//
|
|
// This version is called from the player thread so does not need to
|
|
// arbitrate for access to the Events pointer.
|
|
//
|
|
//==========================================================================
|
|
|
|
int SoftSynthMIDIDevice::StreamOut(MidiHeader *header)
|
|
{
|
|
header->lpNext = NULL;
|
|
if (Events == NULL)
|
|
{
|
|
Events = header;
|
|
NextTickIn = SamplesPerTick * *(uint32_t *)header->lpData;
|
|
Position = 0;
|
|
}
|
|
else
|
|
{
|
|
MidiHeader **p;
|
|
|
|
for (p = &Events; *p != NULL; p = &(*p)->lpNext)
|
|
{ }
|
|
*p = header;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: Pause
|
|
//
|
|
//==========================================================================
|
|
|
|
bool SoftSynthMIDIDevice::Pause(bool paused)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: PlayTick
|
|
//
|
|
// event[0] = delta time
|
|
// event[1] = unused
|
|
// event[2] = event
|
|
//
|
|
//==========================================================================
|
|
|
|
int SoftSynthMIDIDevice::PlayTick()
|
|
{
|
|
uint32_t delay = 0;
|
|
|
|
while (delay == 0 && Events != NULL)
|
|
{
|
|
uint32_t *event = (uint32_t *)(Events->lpData + Position);
|
|
if (MEVENT_EVENTTYPE(event[2]) == MEVENT_TEMPO)
|
|
{
|
|
SetTempo(MEVENT_EVENTPARM(event[2]));
|
|
}
|
|
else if (MEVENT_EVENTTYPE(event[2]) == MEVENT_LONGMSG)
|
|
{
|
|
HandleLongEvent((uint8_t *)&event[3], MEVENT_EVENTPARM(event[2]));
|
|
}
|
|
else if (MEVENT_EVENTTYPE(event[2]) == 0)
|
|
{ // Short MIDI event
|
|
int status = event[2] & 0xff;
|
|
int parm1 = (event[2] >> 8) & 0x7f;
|
|
int parm2 = (event[2] >> 16) & 0x7f;
|
|
HandleEvent(status, parm1, parm2);
|
|
|
|
#if 0
|
|
if (synth_watch)
|
|
{
|
|
static const char *const commands[8] =
|
|
{
|
|
"Note off",
|
|
"Note on",
|
|
"Poly press",
|
|
"Ctrl change",
|
|
"Prgm change",
|
|
"Chan press",
|
|
"Pitch bend",
|
|
"SysEx"
|
|
};
|
|
char buffer[128];
|
|
mysnprintf(buffer, countof(buffer), "C%02d: %11s %3d %3d\n", (status & 15) + 1, commands[(status >> 4) & 7], parm1, parm2);
|
|
#ifdef _WIN32
|
|
I_DebugPrint(buffer);
|
|
#else
|
|
fputs(buffer, stderr);
|
|
#endif
|
|
}
|
|
#endif
|
|
}
|
|
|
|
// Advance to next event.
|
|
if (event[2] < 0x80000000)
|
|
{ // Short message
|
|
Position += 12;
|
|
}
|
|
else
|
|
{ // Long message
|
|
Position += 12 + ((MEVENT_EVENTPARM(event[2]) + 3) & ~3);
|
|
}
|
|
|
|
// Did we use up this buffer?
|
|
if (Position >= Events->dwBytesRecorded)
|
|
{
|
|
Events = Events->lpNext;
|
|
Position = 0;
|
|
|
|
if (Callback != NULL)
|
|
{
|
|
Callback(CallbackData);
|
|
}
|
|
}
|
|
|
|
if (Events == NULL)
|
|
{ // No more events. Just return something to keep the song playing
|
|
// while we wait for more to be submitted.
|
|
return int(Division);
|
|
}
|
|
|
|
delay = *(uint32_t *)(Events->lpData + Position);
|
|
}
|
|
return delay;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// SoftSynthMIDIDevice :: ServiceStream
|
|
//
|
|
//==========================================================================
|
|
|
|
bool SoftSynthMIDIDevice::ServiceStream (void *buff, int numbytes)
|
|
{
|
|
float *samples = (float *)buff;
|
|
float *samples1;
|
|
int numsamples = numbytes / sizeof(float) / 2;
|
|
bool res = true;
|
|
|
|
samples1 = samples;
|
|
memset(buff, 0, numbytes);
|
|
|
|
while (Events != NULL && numsamples > 0)
|
|
{
|
|
double ticky = NextTickIn;
|
|
int tick_in = int(NextTickIn);
|
|
int samplesleft = std::min(numsamples, tick_in);
|
|
|
|
if (samplesleft > 0)
|
|
{
|
|
ComputeOutput(samples1, samplesleft);
|
|
assert(NextTickIn == ticky);
|
|
NextTickIn -= samplesleft;
|
|
assert(NextTickIn >= 0);
|
|
numsamples -= samplesleft;
|
|
samples1 += samplesleft * 2;
|
|
}
|
|
|
|
if (NextTickIn < 1)
|
|
{
|
|
int next = PlayTick();
|
|
assert(next >= 0);
|
|
if (next == 0)
|
|
{ // end of song
|
|
if (numsamples > 0)
|
|
{
|
|
ComputeOutput(samples1, numsamples);
|
|
}
|
|
res = false;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
NextTickIn += SamplesPerTick * next;
|
|
assert(NextTickIn >= 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (Events == NULL)
|
|
{
|
|
res = false;
|
|
}
|
|
return res;
|
|
}
|