simplify
This commit is contained in:
Glenn Maynard
@@ -1,156 +1,30 @@
|
||||
#include "global.h"
|
||||
#include "RageSoundDriver_Null.h"
|
||||
|
||||
#include "RageTimer.h"
|
||||
#include "RageLog.h"
|
||||
#include "RageSound.h"
|
||||
#include "RageUtil.h"
|
||||
#include "RageSoundManager.h"
|
||||
|
||||
#include "SDL_utils.h"
|
||||
|
||||
const int channels = 2;
|
||||
const int samplesize = channels*2; /* 16-bit */
|
||||
const int samplerate = 44100;
|
||||
const int buffersize_frames = 1024*8; /* in frames */
|
||||
const int buffersize = buffersize_frames * samplesize; /* in bytes */
|
||||
|
||||
|
||||
int RageSound_Null::MixerThread_start(void *p)
|
||||
void RageSound_Null::Update( float fDeltaTime )
|
||||
{
|
||||
((RageSound_Null *) p)->MixerThread();
|
||||
return 0;
|
||||
}
|
||||
|
||||
void RageSound_Null::MixerThread()
|
||||
{
|
||||
/* SOUNDMAN will be set once RageSoundManager's ctor returns and
|
||||
* assigns it; we might get here before that happens, though. */
|
||||
while(!SOUNDMAN && !shutdown) SDL_Delay(10);
|
||||
|
||||
RageTimer Speaker;
|
||||
|
||||
while(!shutdown) {
|
||||
const int delay_ms = 1000 * buffersize_frames / samplerate;
|
||||
SDL_Delay(delay_ms / 2);
|
||||
|
||||
LockMutex L(SOUNDMAN->lock);
|
||||
|
||||
/* "Play" frames. */
|
||||
const float ms_passed = Speaker.GetDeltaTime();
|
||||
const int samples_played = int(samplerate * ms_passed);
|
||||
for(unsigned i = 0; i < sounds.size(); ++i)
|
||||
{
|
||||
sounds[i]->samples_buffered -= samples_played;
|
||||
sounds[i]->samples_buffered = max(sounds[i]->samples_buffered, 0);
|
||||
}
|
||||
|
||||
GetData();
|
||||
}
|
||||
}
|
||||
|
||||
bool RageSound_Null::GetData()
|
||||
{
|
||||
LockMutex L(SOUNDMAN->lock);
|
||||
|
||||
/* Create a 32-bit buffer to mix sounds. */
|
||||
static Sint16 *buf = NULL;
|
||||
int bufsize = buffersize_frames * channels;
|
||||
if(!buf)
|
||||
buf = new Sint16[bufsize];
|
||||
|
||||
for(unsigned i = 0; i < sounds.size(); ++i)
|
||||
/* "Play" frames. */
|
||||
while( last_cursor_pos < GetPosition(NULL)+1024 )
|
||||
{
|
||||
if(sounds[i]->stopping)
|
||||
continue;
|
||||
|
||||
unsigned samples_needed = buffersize_frames - sounds[i]->samples_buffered;
|
||||
unsigned bytes_needed = samples_needed*samplesize;
|
||||
int Play_Time = int(RageTimer::GetTimeSinceStart() * samplerate);
|
||||
Play_Time += sounds[i]->samples_buffered;
|
||||
|
||||
/* Call the callback. */
|
||||
unsigned got = sounds[i]->snd->GetPCM((char *) buf, bytes_needed, Play_Time);
|
||||
sounds[i]->samples_buffered += got/samplesize;
|
||||
|
||||
if(got < bytes_needed)
|
||||
{
|
||||
/* This sound is finishing. */
|
||||
sounds[i]->stopping = true;
|
||||
}
|
||||
int16_t buf[512*channels];
|
||||
this->Mix( buf, 512, last_cursor_pos, GetPosition(NULL) );
|
||||
last_cursor_pos += 512;
|
||||
}
|
||||
|
||||
// and, do nothing! it's silence
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void RageSound_Null::StartMixing( RageSoundBase *snd )
|
||||
{
|
||||
sound *s = new sound;
|
||||
s->snd = snd;
|
||||
|
||||
LockMutex L(SOUNDMAN->lock);
|
||||
sounds.push_back(s);
|
||||
}
|
||||
|
||||
void RageSound_Null::Update(float delta)
|
||||
{
|
||||
LockMutex L(SOUNDMAN->lock);
|
||||
|
||||
/* SoundStopped might erase sounds out from under us, so make a copy
|
||||
* of the sound list. */
|
||||
vector<sound *> snds = sounds;
|
||||
for(unsigned i = 0; i < snds.size(); ++i)
|
||||
{
|
||||
if(!sounds[i]->stopping) continue;
|
||||
|
||||
if(sounds[i]->samples_buffered)
|
||||
continue; /* stopping but still flushing */
|
||||
|
||||
/* This sound is done. */
|
||||
snds[i]->snd->StopPlaying();
|
||||
}
|
||||
}
|
||||
|
||||
void RageSound_Null::StopMixing( RageSoundBase *snd )
|
||||
{
|
||||
LockMutex L(SOUNDMAN->lock);
|
||||
|
||||
/* Find the sound. */
|
||||
unsigned i;
|
||||
for(i = 0; i < sounds.size(); ++i)
|
||||
if(sounds[i]->snd == snd) break;
|
||||
if(i == sounds.size())
|
||||
{
|
||||
LOG->Trace("not stopping a sound because it's not playing");
|
||||
return;
|
||||
}
|
||||
|
||||
delete sounds[i];
|
||||
sounds.erase(sounds.begin()+i, sounds.begin()+i+1);
|
||||
}
|
||||
|
||||
int64_t RageSound_Null::GetPosition( const RageSoundBase *snd ) const
|
||||
{
|
||||
return int64_t(RageTimer::GetTimeSinceStart() * samplerate);
|
||||
return int64_t( RageTimer::GetTimeSinceStart() * samplerate );
|
||||
}
|
||||
|
||||
RageSound_Null::RageSound_Null()
|
||||
{
|
||||
shutdown = false;
|
||||
|
||||
MixingThread.SetName( "RageSound_Null" );
|
||||
MixingThread.Create( MixerThread_start, this );
|
||||
}
|
||||
|
||||
RageSound_Null::~RageSound_Null()
|
||||
{
|
||||
/* Signal the mixing thread to quit. */
|
||||
shutdown = true;
|
||||
LOG->Trace("Shutting down mixer thread ...");
|
||||
MixingThread.Wait();
|
||||
LOG->Trace("Mixer thread shut down.");
|
||||
last_cursor_pos = GetPosition( NULL );
|
||||
}
|
||||
|
||||
float RageSound_Null::GetPlayLatency() const
|
||||
@@ -159,10 +33,8 @@ float RageSound_Null::GetPlayLatency() const
|
||||
}
|
||||
|
||||
/*
|
||||
* Copyright (c) 2002 by the person(s) listed below. All rights reserved.
|
||||
* Copyright (c) 2002-2004 by the person(s) listed below. All rights reserved.
|
||||
*
|
||||
* Glenn Maynard (RageSoundDriver_WaveOut)
|
||||
*
|
||||
* 2003-02 RageSoundDriver_Null created from RageSoundDriver_WaveOut
|
||||
* Aaron VonderHaar
|
||||
* Glenn Maynard
|
||||
* Aaron VonderHaar
|
||||
*/
|
||||
|
||||
Reference in New Issue
Block a user