Work on event loop

Make a new epoll based event loop and use it for the data tranport. Simplify the spa event api a little and rename to SpaLoop
2025-11-18 07:00:06 -05:00 · 2016-11-18 17:46:01 +01:00 · 2016-11-18 17:46:01 +01:00 · ae93f15965
commit ae93f15965
parent 0d2fa5ebc8
33 changed files with 1286 additions and 954 deletions
--- a/spa/include/spa/loop.h
+++ b/spa/include/spa/loop.h
@ -0,0 +1,95 @@
+/* Simple Plugin API
+ * Copyright (C) 2016 Wim Taymans <wim.taymans@gmail.com>
+ *
+ * This library 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; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __SPA_LOOP_H__
+#define __SPA_LOOP_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct _SpaLoop SpaLoop;
+typedef struct _SpaSource SpaSource;
+
+#define SPA_LOOP_URI             "http://spaplug.in/ns/loop"
+#define SPA_LOOP_PREFIX          SPA_LOOP_URI "#"
+#define SPA_LOOP__MainLoop       SPA_LOOP_PREFIX "MainLoop"
+#define SPA_LOOP__DataLoop       SPA_LOOP_PREFIX "DataLoop"
+
+#include <spa/defs.h>
+
+typedef void (*SpaSourceFunc) (SpaSource *source);
+
+typedef enum {
+  SPA_IO_IN    = (1 << 0),
+  SPA_IO_OUT   = (1 << 1),
+  SPA_IO_HUP   = (1 << 2),
+  SPA_IO_ERR   = (1 << 3),
+} SpaIO;
+
+struct _SpaSource {
+  SpaLoop       *loop;
+  SpaSourceFunc  func;
+  void          *data;
+  int            fd;
+  SpaIO          mask;
+  SpaIO          rmask;
+  void          *loop_private;
+};
+
+typedef SpaResult (*SpaInvokeFunc) (SpaLoop *loop,
+                                    bool     async,
+                                    uint32_t seq,
+                                    size_t   size,
+                                    void    *data,
+                                    void    *user_data);
+/**
+ * SpaLoop:
+ *
+ * Register sources to an event loop
+ */
+struct _SpaLoop {
+  /* the total size of this structure. This can be used to expand this
+   * structure in the future */
+  size_t size;
+
+  SpaResult   (*add_source)          (SpaLoop   *loop,
+                                      SpaSource *source);
+  SpaResult   (*update_source)       (SpaSource *source);
+
+  void        (*remove_source)       (SpaSource *source);
+
+  SpaResult   (*invoke)              (SpaLoop       *loop,
+                                      SpaInvokeFunc  func,
+                                      uint32_t       seq,
+                                      size_t         size,
+                                      void          *data,
+                                      void          *user_data);
+};
+
+#define spa_loop_add_source(l,...)          (l)->add_source((l),__VA_ARGS__)
+#define spa_loop_update_source(l,...)       (l)->update_source(__VA_ARGS__)
+#define spa_loop_remove_source(l,...)       (l)->remove_source(__VA_ARGS__)
+#define spa_loop_invoke(l,...)              (l)->invoke((l),__VA_ARGS__)
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif /* __SPA_LOOP_H__ */