add lv2ui support

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

diff --git a/cinelerra-5.1/cinelerra/forkbase.h b/cinelerra-5.1/cinelerra/forkbase.h
new file mode 100644 (file)
index 0000000..5502413
--- /dev/null
+++ b/cinelerra-5.1/cinelerra/forkbase.h
@@ -0,0 +1,92 @@
+
+/*
+ * CINELERRA
+ * Copyright (C) 2009 Adam Williams <broadcast at earthling dot net>
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * 
+ */
+
+#ifndef __FORKBASE_H__
+#define __FORKBASE_H__
+
+#include "forkbase.inc"
+#include "mutex.h"
+#include "thread.h"
+
+// Utility functions for all the forking classes
+
+#include <stdint.h>
+
+class ForkBase
+{
+public:
+       enum { EXIT_CODE=0x7fff };
+       typedef struct { int64_t token; int bytes; } token_bfr_t;
+
+       ForkBase();
+       virtual ~ForkBase();
+
+       int is_running();
+       int read_timeout(int ms, int fd, void *data, int bytes);
+       int read_parent(int ms);
+       int send_parent(int64_t value, const void *data, int bytes);
+       int read_child(int ms);
+       int send_child(int64_t value, const void *data, int bytes);
+
+       int done, pid;
+       ForkChild *child;
+
+       int child_fd;
+       int64_t child_token;
+       int child_bytes;
+       int child_allocated;
+       uint8_t *child_data;
+
+       int parent_fd;
+       int64_t parent_token;
+       int parent_bytes;
+       int parent_allocated;
+       uint8_t *parent_data;
+};
+
+class ForkChild : public ForkBase
+{
+public:
+       ForkChild();
+       virtual ~ForkChild();
+       virtual void run() = 0;
+       virtual int handle_child();
+       int child_iteration();
+};
+
+class ForkParent : public Thread, public ForkBase
+{
+public:
+       ForkParent();
+       virtual ~ForkParent();
+       virtual int handle_parent();
+       virtual ForkChild *new_fork() = 0;
+
+       void start_child();
+       void start();
+       void stop();
+       void run();
+       int parent_iteration();
+
+       Mutex *lock;
+};
+
+#endif