This commit is contained in:
Glenn Maynard
2005-10-24 02:14:43 +00:00
parent a9712d7a38
commit 74ee22ad04
2 changed files with 46 additions and 46 deletions
@@ -2,9 +2,7 @@
#include "RageSoundDriver_DSound_Software.h"
#include "DSoundHelpers.h"
#include "RageTimer.h"
#include "RageLog.h"
#include "RageSound.h"
#include "RageUtil.h"
#include "RageSoundManager.h"
#include "PrefsManager.h"
@@ -13,11 +11,11 @@ static const int channels = 2;
static const int bytes_per_frame = channels*2; /* 16-bit */
static const int samplerate = 44100;
static const int safe_writeahead = 1024*4; /* in frames */
static int max_writeahead;
static int g_iMaxWriteahead;
/* We'll fill the buffer in chunks this big. */
static const int num_chunks = 8;
static int chunksize() { return max_writeahead / num_chunks; }
static int chunksize() { return g_iMaxWriteahead / num_chunks; }
void RageSound_DSound_Software::MixerThread()
{
@@ -25,31 +23,31 @@ void RageSound_DSound_Software::MixerThread()
if( !SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_ABOVE_NORMAL) )
LOG->Warn(werr_ssprintf(GetLastError(), "Failed to set sound thread priority"));
while( !shutdown_mixer_thread )
while( !m_bShutdownMixerThread )
{
char *locked_buf;
unsigned len;
const int64_t play_pos = pcm->GetOutputPosition(); /* must be called before get_output_buf */
char *pLockedBuf;
unsigned iLen;
const int64_t iPlayPos = m_pPCM->GetOutputPosition(); /* must be called before get_output_buf */
if( !pcm->get_output_buf(&locked_buf, &len, chunksize()) )
if( !m_pPCM->get_output_buf(&pLockedBuf, &iLen, chunksize()) )
{
Sleep( chunksize()*1000 / samplerate );
continue;
}
this->Mix( (int16_t *) locked_buf, len/bytes_per_frame, play_pos, pcm->GetPosition() );
this->Mix( (int16_t *) pLockedBuf, iLen/bytes_per_frame, iPlayPos, m_pPCM->GetPosition() );
pcm->release_output_buf(locked_buf, len);
m_pPCM->release_output_buf( pLockedBuf, iLen );
}
/* I'm not sure why, but if we don't stop the stream now, then the thread will take
* 90ms (our buffer size) longer to close. */
pcm->Stop();
m_pPCM->Stop();
}
int64_t RageSound_DSound_Software::GetPosition( const RageSoundBase *snd ) const
int64_t RageSound_DSound_Software::GetPosition( const RageSoundBase *pSound ) const
{
return pcm->GetPosition();
return m_pPCM->GetPosition();
}
int RageSound_DSound_Software::MixerThread_start(void *p)
@@ -60,8 +58,8 @@ int RageSound_DSound_Software::MixerThread_start(void *p)
RageSound_DSound_Software::RageSound_DSound_Software()
{
shutdown_mixer_thread = false;
pcm = NULL;
m_bShutdownMixerThread = false;
m_pPCM = NULL;
}
CString RageSound_DSound_Software::Init()
@@ -75,13 +73,13 @@ CString RageSound_DSound_Software::Init()
if( ds.IsEmulated() )
return "Driver unusable (emulated device)";
max_writeahead = safe_writeahead;
g_iMaxWriteahead = safe_writeahead;
if( PREFSMAN->m_iSoundWriteAhead )
max_writeahead = PREFSMAN->m_iSoundWriteAhead;
g_iMaxWriteahead = PREFSMAN->m_iSoundWriteAhead;
/* Create a DirectSound stream, but don't force it into hardware. */
pcm = new DSoundBuf;
sError = pcm->Init( ds, DSoundBuf::HW_DONT_CARE, channels, samplerate, 16, max_writeahead );
m_pPCM = new DSoundBuf;
sError = m_pPCM->Init( ds, DSoundBuf::HW_DONT_CARE, channels, samplerate, 16, g_iMaxWriteahead );
if( sError != "" )
return sError;
@@ -89,19 +87,19 @@ CString RageSound_DSound_Software::Init()
* in the buffer. */
char *locked_buf;
unsigned len;
while( pcm->get_output_buf(&locked_buf, &len, chunksize()) )
while( m_pPCM->get_output_buf(&locked_buf, &len, chunksize()) )
{
memset( locked_buf, 0, len );
pcm->release_output_buf(locked_buf, len);
m_pPCM->release_output_buf(locked_buf, len);
}
StartDecodeThread();
/* Start playing. */
pcm->Play();
m_pPCM->Play();
MixingThread.SetName("Mixer thread");
MixingThread.Create( MixerThread_start, this );
m_MixingThread.SetName("Mixer thread");
m_MixingThread.Create( MixerThread_start, this );
return CString();
}
@@ -109,17 +107,17 @@ CString RageSound_DSound_Software::Init()
RageSound_DSound_Software::~RageSound_DSound_Software()
{
/* Signal the mixing thread to quit. */
if( MixingThread.IsCreated() )
if( m_MixingThread.IsCreated() )
{
shutdown_mixer_thread = true;
m_bShutdownMixerThread = true;
LOG->Trace("Shutting down mixer thread ...");
LOG->Flush();
MixingThread.Wait();
m_MixingThread.Wait();
LOG->Trace("Mixer thread shut down.");
LOG->Flush();
}
delete pcm;
delete m_pPCM;
}
void RageSound_DSound_Software::SetupDecodingThread()
@@ -130,7 +128,7 @@ void RageSound_DSound_Software::SetupDecodingThread()
float RageSound_DSound_Software::GetPlayLatency() const
{
return (1.0f / samplerate) * max_writeahead;
return (1.0f / samplerate) * g_iMaxWriteahead;
}
int RageSound_DSound_Software::GetSampleRate( int rate ) const
@@ -7,26 +7,28 @@
class RageSound_DSound_Software: public RageSound_Generic_Software
{
DSound ds;
DSoundBuf *pcm;
bool shutdown_mixer_thread;
static int MixerThread_start(void *p);
void MixerThread();
RageThread MixingThread;
protected:
void SetupDecodingThread();
public:
int64_t GetPosition( const RageSoundBase *snd ) const;
float GetPlayLatency() const;
int GetSampleRate( int rate ) const;
RageSound_DSound_Software();
virtual ~RageSound_DSound_Software();
CString Init();
int64_t GetPosition( const RageSoundBase *pSound ) const;
float GetPlayLatency() const;
int GetSampleRate( int rate ) const;
protected:
void SetupDecodingThread();
private:
DSound ds;
DSoundBuf *m_pPCM;
bool m_bShutdownMixerThread;
static int MixerThread_start(void *p);
void MixerThread();
RageThread m_MixingThread;
};
#define USE_RAGE_SOUND_DSOUND_SOFTWARE