rework undo compression, add shift viewer overwr/copy/clip/splice, fix paste edl...

[goodguy/history.git] / cinelerra-5.1 / cinelerra / undostack.h

diff --git a/cinelerra-5.1/cinelerra/undostack.h b/cinelerra-5.1/cinelerra/undostack.h
index f54cb0da34de7fe9392da8c6cfccf6e274e056ca..e6791d0a27d65441a6d3073272f047b22fb15a63 100644 (file)
--- a/cinelerra-5.1/cinelerra/undostack.h
+++ b/cinelerra-5.1/cinelerra/undostack.h
@@ -31,11 +31,56 @@
 #define UNDOLEVELS 500
 #define UNDO_KEY_INTERVAL 100
 
 #define UNDOLEVELS 500
 #define UNDO_KEY_INTERVAL 100
 

-// The undo stack is a series of key undo buffers and
-// incremental undo buffers.  The incremental buffers
-// store the differences in the most compact way possible:
-// a series of offsets, sizes and values.  This should allow
-// a huge number of undo updates.
+
+#define hash_sz2 8
+#define hash_sz  (1<<hash_sz2)
+#define hash_sz1 (hash_sz-1)
+#define va 0
+#define vb 1
+
+class UndoHash
+{
+public:
+       UndoHash(char *txt, int len, UndoHash *nxt);
+       ~UndoHash();
+
+       UndoHash *nxt;
+       char *txt;  int len;
+       int line[2], occurs[2];
+};
+
+class UndoHashTable
+{
+public:
+       UndoHashTable();
+       ~UndoHashTable();
+       UndoHash *add(char *txt, int len);
+
+       UndoHash *table[hash_sz];
+       UndoHash *bof, *eof;
+};
+
+class UndoLine
+{
+public:
+       UndoLine(UndoHash *hash);
+       UndoLine(UndoHashTable *hash, char *txt, int len);
+       ~UndoLine();
+       int eq(UndoLine *ln);
+
+       char *txt;  int len;
+       UndoHash *hash;
+};
+
+class UndoVersion : public ArrayList<UndoLine *>
+{
+public:
+       UndoVersion(int v) { ver = v; }
+       ~UndoVersion() { remove_all_objects(); }
+       int ver;
+
+       void scan_lines(UndoHashTable *hash, char *sp, char *ep);
+};

 
 
 class UndoStackItem : public ListItem<UndoStackItem>
 
 
 class UndoStackItem : public ListItem<UndoStackItem>


@@ -56,16 +101,10 @@ public:
 // The string must be deleted by the user.
        char* get_data();
        char* get_filename();
 // The string must be deleted by the user.
        char* get_data();
        char* get_filename();

-       int has_data();

        int get_size();
        int is_key();
        uint64_t get_flags();
 
        int get_size();
        int is_key();
        uint64_t get_flags();
 

-
-// Get pointer to incremental data for use in an apply_difference command.
-       char* get_incremental_data();
-       int get_incremental_size();
-

        void set_creator(void *creator);
        void* get_creator();
 
        void set_creator(void *creator);
        void* get_creator();