From ed726272456ad872d8e79e74737dfc27301d6c6e Mon Sep 17 00:00:00 2001
From: coderkun <olli@coderkun.de>
Date: Sun, 26 Mar 2017 17:11:34 +0200
Subject: [PATCH] Fix reading and writing of stereo files

---
 src/diskreader.cxx | 25 ++++++++++++++++---------
 src/diskwriter.cxx |  6 ++++--
 2 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/src/diskreader.cxx b/src/diskreader.cxx
index ac324b4..c34f957 100644
--- a/src/diskreader.cxx
+++ b/src/diskreader.cxx
@@ -165,9 +165,9 @@ int DiskReader::loadSample( int track, int scene, string path )
 	/// load the sample
 	SndfileHandle infile( path, SFM_READ );
 	int chnls = infile.channels();
-	std::vector<float> bufL( infile.frames() / chnls );
-	std::vector<float> bufR( infile.frames() / chnls );
-    std::vector<float> bufTmp( infile.frames() * (chnls-2) );
+	std::vector<float> bufL( infile.frames() );
+	std::vector<float> bufR( infile.frames() );
+    float frameBuf[ sizeof(float) * chnls ];
 
 	if ( infile.error() ) {
 		LUPPP_ERROR("File %s, Error %s", path.c_str(), infile.strError() );
@@ -177,13 +177,20 @@ int DiskReader::loadSample( int track, int scene, string path )
 	LUPPP_NOTE("Loading file with  %i chnls, frames %i, bufferL size %i bufferR size %i", infile.channels(), infile.frames(), bufL.size(), bufR.size() );
 
 	// Read data
-    for(int f=0; f<infile.frames()/chnls; f++) {
-        infile.read( (float*)&bufL[f] , 1 );
-        infile.read( (float*)&bufR[f] , 1 );
+    for(int f=0; f<infile.frames(); f++) {
+        infile.readf( frameBuf, 1 );
 
-        // Read (and ignore) remaining channels
-        for(int c=0; c<chnls-2; c++) {
-            infile.read( (float*)&bufTmp[f], 1);
+        // Frist sapmle
+        // used for both channels when file is mono
+        // used for left channel when file is stereo
+        if(chnls > 0) {
+            bufL[f] = frameBuf[0];
+            bufR[f] = frameBuf[0];
+        }
+        // Second sample
+        // used for right channel when file is stereo
+        if(chnls > 1) {
+            bufR[f] = frameBuf[1];
         }
     }
 
diff --git a/src/diskwriter.cxx b/src/diskwriter.cxx
index 1d0bf27..e7d036f 100644
--- a/src/diskwriter.cxx
+++ b/src/diskwriter.cxx
@@ -321,9 +321,11 @@ int DiskWriter::writeAudioBuffer(int track, int scene, AudioBuffer* ab,
 	// FIXME: the size of the buffer is bigger than the audio contained in it:
 	// calculate the length that needs saving using getBeats() * framesPerBeat
 	if ( ab->getAudioFrames() > 0 ) {
+        float frameBuf[ sizeof(float) * 2 ];
         for(int i=0; i<ab->getAudioFrames(); i++) {
-            outfile.writef( &ab->getDataL()[i], 1); //sizeof(ab->getDataL()[i]));
-            outfile.writef( &ab->getDataR()[i], 1); //sizeof(ab->getDataR()[i]));
+            frameBuf[0] = ab->getDataL()[i];
+            frameBuf[1] = ab->getDataR()[i];
+            outfile.writef( frameBuf, 1);
         }
     }
 	else {