| /* |
| * |
| * |
| * 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_IO_H |
| #define __PVRUSB2_IO_H |
| |
| #include <linux/usb.h> |
| #include <linux/list.h> |
| |
| typedef void (*pvr2_stream_callback)(void *); |
| |
| enum pvr2_buffer_state { |
| pvr2_buffer_state_none = 0, // Not on any list |
| pvr2_buffer_state_idle = 1, // Buffer is ready to be used again |
| pvr2_buffer_state_queued = 2, // Buffer has been queued for filling |
| pvr2_buffer_state_ready = 3, // Buffer has data available |
| }; |
| |
| struct pvr2_stream; |
| struct pvr2_buffer; |
| |
| struct pvr2_stream_stats { |
| unsigned int buffers_in_queue; |
| unsigned int buffers_in_idle; |
| unsigned int buffers_in_ready; |
| unsigned int buffers_processed; |
| unsigned int buffers_failed; |
| unsigned int bytes_processed; |
| }; |
| |
| /* Initialize / tear down stream structure */ |
| struct pvr2_stream *pvr2_stream_create(void); |
| void pvr2_stream_destroy(struct pvr2_stream *); |
| void pvr2_stream_setup(struct pvr2_stream *, |
| struct usb_device *dev,int endpoint, |
| unsigned int tolerance); |
| void pvr2_stream_set_callback(struct pvr2_stream *, |
| pvr2_stream_callback func, |
| void *data); |
| void pvr2_stream_get_stats(struct pvr2_stream *, |
| struct pvr2_stream_stats *, |
| int zero_counts); |
| |
| /* Query / set the nominal buffer count */ |
| int pvr2_stream_get_buffer_count(struct pvr2_stream *); |
| int pvr2_stream_set_buffer_count(struct pvr2_stream *,unsigned int); |
| |
| /* Get a pointer to a buffer that is either idle, ready, or is specified |
| named. */ |
| struct pvr2_buffer *pvr2_stream_get_idle_buffer(struct pvr2_stream *); |
| struct pvr2_buffer *pvr2_stream_get_ready_buffer(struct pvr2_stream *); |
| struct pvr2_buffer *pvr2_stream_get_buffer(struct pvr2_stream *sp,int id); |
| |
| /* Find out how many buffers are idle or ready */ |
| int pvr2_stream_get_ready_count(struct pvr2_stream *); |
| |
| |
| /* Kill all pending buffers and throw away any ready buffers as well */ |
| void pvr2_stream_kill(struct pvr2_stream *); |
| |
| /* Set up the actual storage for a buffer */ |
| int pvr2_buffer_set_buffer(struct pvr2_buffer *,void *ptr,unsigned int cnt); |
| |
| /* Find out size of data in the given ready buffer */ |
| unsigned int pvr2_buffer_get_count(struct pvr2_buffer *); |
| |
| /* Retrieve completion code for given ready buffer */ |
| int pvr2_buffer_get_status(struct pvr2_buffer *); |
| |
| /* Retrieve ID of given buffer */ |
| int pvr2_buffer_get_id(struct pvr2_buffer *); |
| |
| /* Start reading into given buffer (kill it if needed) */ |
| int pvr2_buffer_queue(struct pvr2_buffer *); |
| |
| #endif /* __PVRUSB2_IO_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: *** |
| */ |
