1 files changed, 95 insertions, 0 deletions
diff --git a/mpeglib/lib/splay/synthesis.h b/mpeglib/lib/splay/synthesis.h
new file mode 100644
index 00000000..801d658e
--- /dev/null
+++ b/mpeglib/lib/splay/synthesis.h
@@ -0,0 +1,95 @@
+/*
+  header for synthesis
+  Copyright (C) 2001  Martin Vogt
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Library General Public License as published by
+  the Free Software Foundation.
+
+  For more information look at the file COPYRIGHT in this package
+
+ */
+
+
+
+#ifndef __SYNTHESIS_H
+#define __SYNTHESIS_H
+
+#include "common.h"
+#include "dct.h"
+
+#define CALCBUFFERSIZE     512
+// AIX seems to have FRAMESIZE defined
+#undef FRAMESIZE
+
+#define FRAMESIZE         (2*2*2*32*18)
+
+
+class Synthesis {
+
+  //
+  // Subbandsynthesis two calcbuffers for every channel, and two channels.
+  // calcbufferL[0]=calcbuffer[0]
+  // calcbufferL[1]=calcbuffer[1]
+  // calcbufferR[0]=calcbuffer[2]
+  // calcbufferR[1]=calcbuffer[3]
+  ATTR_ALIGN(64) REAL calcbuffer[2][2][CALCBUFFERSIZE];
+  ATTR_ALIGN(64) int  currentcalcbuffer,calcbufferoffset;
+  static ATTR_ALIGN(64) const REAL filter[512];
+  ATTR_ALIGN(64) REAL out[FRAMESIZE];
+  int outpos;
+
+ public:
+  Synthesis();
+  ~Synthesis();
+  
+  // mpeg1,2
+  void doSynth(int lDownSample,int lOutputStereo,
+	       REAL *fractionL,REAL *fractionR);
+
+  void doMP3Synth(int lDownSample,int lOutputStereo,
+		  REAL in[2][SSLIMIT][SBLIMIT]);
+
+  // put mpeg to raw
+  inline void putraw(REAL val) {
+    out[outpos++]=val;
+  }
+
+  inline REAL* getOutputData() { return out; }
+  inline void clearrawdata() { outpos=0; }
+  inline int getLen() { return outpos; }
+  
+
+ private:
+  void synth_Down(int lOutputStereo,REAL *fractionL,REAL *fractionR);
+  void synth_Std(int lOutputStereo,REAL *fractionL,REAL *fractionR);
+  
+  void synthMP3_Down(int lOutputStereo,REAL hout [2][SSLIMIT][SBLIMIT]);
+  void synthMP3_Std(int lOutputStereo,REAL hout [2][SSLIMIT][SBLIMIT]);
+
+  inline void nextOffset() {
+    calcbufferoffset++;
+    calcbufferoffset&=0xf;
+    /*
+    if (calcbufferoffset<15) {
+      calcbufferoffset++;
+    } else {
+      calcbufferoffset=0;
+    }
+    */
+    currentcalcbuffer^=1;
+  }
+
+  
+  void computebuffer_Std(REAL *fraction,REAL buffer[2][CALCBUFFERSIZE]);
+  void generate_Std(void);
+  void generatesingle_Std(void);
+  
+  void computebuffer_Down(REAL *fraction,REAL buffer[2][CALCBUFFERSIZE]);
+  void generate_Down(void);
+  void generatesingle_Down(void);
+  
+
+};
+
+#endif