From 85e336b48b76dfcf066fbd5eb9a8677bc28c8f13 Mon Sep 17 00:00:00 2001
From: Javier Serrano Polo <jasp00@terra.es>
Date: Sun, 13 Aug 2006 14:03:35 +0000
Subject: [PATCH] - became a QObject - create handle from sampleTCO - fill
 audio buffer from the requested base frame - made automation-awared

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@314 0778d3d1-df1d-0410-868b-ea421aaaa00d
---
 include/sample_play_handle.h    | 17 ++++++-
 src/core/sample_play_handle.cpp | 79 ++++++++++++++++++++++++++++-----
 2 files changed, 84 insertions(+), 12 deletions(-)

diff --git a/include/sample_play_handle.h b/include/sample_play_handle.h
index 4fae2bfca..46ade5ad5 100644
--- a/include/sample_play_handle.h
+++ b/include/sample_play_handle.h
@@ -26,22 +26,29 @@
 #ifndef _SAMPLE_PLAY_HANDLE_H
 #define _SAMPLE_PLAY_HANDLE_H
 
+#include <qobject.h>
+
 #include "play_handle.h"
 #include "types.h"
 #include "engine.h"
 
 class sampleBuffer;
+class sampleTCO;
+class track;
 class audioPort;
 
 
-class samplePlayHandle : public playHandle, public engineObject
+class samplePlayHandle : public QObject, public playHandle, public engineObject
 {
+	Q_OBJECT
 public:
 	samplePlayHandle( const QString & _sample_file, engine * _engine );
 	samplePlayHandle( sampleBuffer * _sample_buffer );
+	samplePlayHandle( sampleTCO * _tco );
 	virtual ~samplePlayHandle();
 
 	virtual void play( void );
+	void play( const fpab_t _frame_base );
 	virtual bool done( void ) const;
 
 	f_cnt_t totalFrames( void ) const;
@@ -55,6 +62,10 @@ public:
 	}
 
 
+public slots:
+	void setVolume( float _new_volume );
+
+
 private:
 	sampleBuffer * m_sampleBuffer;
 	const bool m_ownSampleBuffer;
@@ -63,6 +74,10 @@ private:
 	f_cnt_t m_frame;
 
 	audioPort * m_audioPort;
+	const bool m_ownAudioPort;
+
+	float m_volume;
+	track * m_track;
 
 } ;
 
diff --git a/src/core/sample_play_handle.cpp b/src/core/sample_play_handle.cpp
index bdbfbd67e..5897e6e3f 100644
--- a/src/core/sample_play_handle.cpp
+++ b/src/core/sample_play_handle.cpp
@@ -27,6 +27,7 @@
 
 #include "sample_play_handle.h"
 #include "sample_buffer.h"
+#include "sample_track.h"
 #include "buffer_allocator.h"
 #include "audio_port.h"
 
@@ -40,7 +41,10 @@ samplePlayHandle::samplePlayHandle( const QString & _sample_file,
 	m_ownSampleBuffer( TRUE ),
 	m_doneMayReturnTrue( TRUE ),
 	m_frame( 0 ),
-	m_audioPort( new audioPort( "samplePlayHandle", eng() ) )
+	m_audioPort( new audioPort( "samplePlayHandle", eng() ) ),
+	m_ownAudioPort( TRUE ),
+	m_volume( 1.0f ),
+	m_track( NULL )
 {
 }
 
@@ -54,7 +58,27 @@ samplePlayHandle::samplePlayHandle( sampleBuffer * _sample_buffer ) :
 	m_ownSampleBuffer( FALSE ),
 	m_doneMayReturnTrue( TRUE ),
 	m_frame( 0 ),
-	m_audioPort( new audioPort( "samplePlayHandle", eng() ) )
+	m_audioPort( new audioPort( "samplePlayHandle", eng() ) ),
+	m_ownAudioPort( TRUE ),
+	m_volume( 1.0f ),
+	m_track( NULL )
+{
+}
+
+
+
+
+samplePlayHandle::samplePlayHandle( sampleTCO * _tco ) :
+	playHandle( SAMPLE_PLAY_HANDLE ),
+	engineObject( _tco->eng() ),
+	m_sampleBuffer( _tco->getSampleBuffer() ),
+	m_ownSampleBuffer( FALSE ),
+	m_doneMayReturnTrue( TRUE ),
+	m_frame( 0 ),
+	m_audioPort( ( (sampleTrack *)_tco->getTrack() )->getAudioPort() ),
+	m_ownAudioPort( FALSE ),
+	m_volume( 1.0f ),
+	m_track( _tco->getTrack() )
 {
 }
 
@@ -67,30 +91,47 @@ samplePlayHandle::~samplePlayHandle()
 	{
 		delete m_sampleBuffer;
 	}
-	delete m_audioPort;
+	if( m_ownAudioPort )
+	{
+		delete m_audioPort;
+	}
 }
 
 
 
 
 void samplePlayHandle::play( void )
+{
+	play( 0 );
+}
+
+
+
+
+void samplePlayHandle::play( const fpab_t _frame_base )
 {
 	if( framesDone() >= totalFrames() )
 	{
 		return;
 	}
 
-	const fpab_t frames = eng()->getMixer()->framesPerAudioBuffer();
-	sampleFrame * buf = bufferAllocator::alloc<sampleFrame>( frames );
-	volumeVector v = { 1.0f, 1.0f
+	const fpab_t frames = eng()->getMixer()->framesPerAudioBuffer()
+								- _frame_base;
+	if( !( m_track && m_track->muted() ) )
+	{
+		sampleFrame * buf = bufferAllocator::alloc<sampleFrame>(
+								frames );
+		volumeVector v = { { m_volume, m_volume
 #ifndef DISABLE_SURROUND
-					, 1.0f, 1.0f
+						, m_volume, m_volume
 #endif
-			} ;
-	m_sampleBuffer->play( buf, m_frame, frames );
-	eng()->getMixer()->bufferToPort( buf, frames, 0, v, m_audioPort );
+				} } ;
+		m_sampleBuffer->play( buf, m_frame, frames );
+		eng()->getMixer()->bufferToPort( buf, frames, _frame_base, v,
+								m_audioPort );
 
-	bufferAllocator::free( buf );
+		bufferAllocator::free( buf );
+	}
 
 	m_frame += frames;
 }
@@ -112,4 +153,20 @@ f_cnt_t samplePlayHandle::totalFrames( void ) const
 }
 
 
+
+
+void samplePlayHandle::setVolume( float _new_volume )
+{
+	if( _new_volume <= MAX_VOLUME )
+	{
+		m_volume = _new_volume / 100.0f;
+	}
+}
+
+
+
+
+#include "sample_play_handle.moc"
+
+
 #endif