zynaddsubfx

commit c5e5c3b2efa0a8e2d1fef23294d4a2af21f640e9
parent 0b0b236677c3d2456f8e8200f23fd7f4505a01c5
Author: paulnasca <paulnasca>
Date:   Thu, 25 Mar 2004 19:06:16 +0000

*** empty log message ***

Diffstat:
M
ChangeLog
 | 
2
+-
M
examples/Split_keyboard.mas_zyn
 | 
0

M
src/Seq/MIDIFile.C
 | 
51
+++++++++++++++++++++++++++++++++++++++++++++++++++
M
src/Seq/MIDIFile.h
 | 
9
+++++++++

4 files changed, 61 insertions(+), 1 deletion(-)
diff --git a/ChangeLog b/ChangeLog
@@ -561,6 +561,6 @@
 15 Mar 2004 - Inceput sa scriu partea de incarcare MIDI
 	    - Inlaturata partea de recording din Sequencer
 16 Mar 2004 - Inceput sa scriu partea de analiza midi
-	    
+25 Mar 2004 - Continuat partea de analiza midi	    
 
 
diff --git a/examples/Split_keyboard.mas_zyn b/examples/Split_keyboard.mas_zyn
Binary files differ.
diff --git a/src/Seq/MIDIFile.C b/src/Seq/MIDIFile.C
@@ -80,9 +80,57 @@ int MIDIFile::parsemidifile(){
     int format=getint16();
     printf("format %d\n",format);
 
+    int ntracks=getint16();//this is always if the format is "0"
+    printf("ntracks %d\n",ntracks);
+
+    if (ntracks>=NUM_MIDI_CHANNELS){
+	ntracks=NUM_MIDI_CHANNELS;
+    };
+    
+    int division=getint16();
+    printf("division %d\n",division);
+    if (division>=0){//delta time units in each a quater note
+//	tick=???;
+    } else {//SMPTE (frames/second and ticks/frame)
+	printf("ERROR:in MIDIFile.C::parsemidifile() - SMPTE not implemented yet.");
+    };    
+    
+//    for (int n=0;n<ntracks;n++){
+	if (parsetrack(0)<0) {
+	    clearmidifile();
+	    return(-1);
+	};
+//    };
+
     return(0);
 };
 
+int MIDIFile::parsetrack(int ntrack){
+    printf("\n--==*Reading track %d **==--\n",ntrack);
+
+    int chunk=getint32();//MTrk
+    if (chunk!=0x4d54726b) return(-1);
+
+    int size=getint32();
+    printf("%d\n",size);
+//    if (size!=6) return(-1);//header is always 6 bytes long
+/*
+unsigned long ReadVarLen( void ) {
+        unsigned long value;
+        byte c;
+
+        if ((value = getc(infile)) & 0x80) {
+                value &= 0x7f;
+                do  {
+                        value = (value << 7) + ((c = getc(infile)) & 0x7f);
+                }  while (c & 0x80);
+        }
+        return value;
+}
+
+*/
+};
+
 //private members
 
 void MIDIFile::clearmidifile(){
@@ -91,6 +139,9 @@ void MIDIFile::clearmidifile(){
     midifilesize=0;
     midifilek=0;
     midieof=false;
+    
+    data.tick=0.05;
+    
 };
 
 unsigned char MIDIFile::getbyte(){
diff --git a/src/Seq/MIDIFile.h b/src/Seq/MIDIFile.h
@@ -23,6 +23,8 @@
 #ifndef MIDIFILE_H
 #define MIDIFILE_H
 
+#include "../globals.h"
+
 class MIDIFile{
     public:
 	MIDIFile();
@@ -34,6 +36,9 @@ class MIDIFile{
 	//returns -1 if there is an error, otherwise 0
 	int parsemidifile();
 	
+	//returns -1 if there is an error, otherwise 0
+	int parsetrack(int ntrack);
+	
     private:
 	unsigned char *midifile;
 	int midifilesize,midifilek;
@@ -50,6 +55,10 @@ class MIDIFile{
 	//get a word of 2 bytes from the midifile
 	unsigned short int getint16();
 	
+	struct {
+	    double tick;//how many seconds one tick has
+	}data;
+	
 };
 
 #endif