This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / drivers / media / video / pvrusb2 / pvrusb2-context.h

diff --git a/drivers/media/video/pvrusb2/pvrusb2-context.h b/drivers/media/video/pvrusb2/pvrusb2-context.h
new file mode 100644 (file)
index 0000000..6327fa1
--- /dev/null
+++ b/drivers/media/video/pvrusb2/pvrusb2-context.h
@@ -0,0 +1,92 @@
+/*
+ *  $Id$
+ *
+ *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
+ *
+ *  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
+ *
+ *  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 __PVRUSB2_BASE_H
+#define __PVRUSB2_BASE_H
+
+#include <linux/mutex.h>
+#include <linux/usb.h>
+#include <linux/workqueue.h>
+
+struct pvr2_hdw;     /* hardware interface - defined elsewhere */
+struct pvr2_stream;  /* stream interface - defined elsewhere */
+
+struct pvr2_context;        /* All central state */
+struct pvr2_channel;        /* One I/O pathway to a user */
+struct pvr2_context_stream; /* Wrapper for a stream */
+struct pvr2_crit_reg;       /* Critical region pointer */
+struct pvr2_ioread;         /* Low level stream structure */
+
+struct pvr2_context_stream {
+       struct pvr2_channel *user;
+       struct pvr2_stream *stream;
+};
+
+struct pvr2_context {
+       struct pvr2_channel *mc_first;
+       struct pvr2_channel *mc_last;
+       struct pvr2_hdw *hdw;
+       struct pvr2_context_stream video_stream;
+       struct mutex mutex;
+       int disconnect_flag;
+
+       /* Called after pvr2_context initialization is complete */
+       void (*setup_func)(struct pvr2_context *);
+
+       /* Work queue overhead for out-of-line processing */
+       struct workqueue_struct *workqueue;
+       struct work_struct workinit;
+       struct work_struct workpoll;
+};
+
+struct pvr2_channel {
+       struct pvr2_context *mc_head;
+       struct pvr2_channel *mc_next;
+       struct pvr2_channel *mc_prev;
+       struct pvr2_context_stream *stream;
+       struct pvr2_hdw *hdw;
+       void (*check_func)(struct pvr2_channel *);
+};
+
+void pvr2_context_enter(struct pvr2_context *);
+void pvr2_context_exit(struct pvr2_context *);
+
+struct pvr2_context *pvr2_context_create(struct usb_interface *intf,
+                                        const struct usb_device_id *devid,
+                                        void (*setup_func)(struct pvr2_context *));
+void pvr2_context_disconnect(struct pvr2_context *);
+
+void pvr2_channel_init(struct pvr2_channel *,struct pvr2_context *);
+void pvr2_channel_done(struct pvr2_channel *);
+int pvr2_channel_claim_stream(struct pvr2_channel *,
+                             struct pvr2_context_stream *);
+struct pvr2_ioread *pvr2_channel_create_mpeg_stream(
+       struct pvr2_context_stream *);
+
+
+#endif /* __PVRUSB2_CONTEXT_H */
+/*
+  Stuff for Emacs to see, in order to encourage consistent editing style:
+  *** Local Variables: ***
+  *** mode: c ***
+  *** fill-column: 75 ***
+  *** tab-width: 8 ***
+  *** c-basic-offset: 8 ***
+  *** End: ***
+  */