79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-only */
|
||
|
|
/*
|
||
|
|
*
|
||
|
|
* Copyright (C) 2005 Mike Isely <isely@pobox.com>
|
||
|
|
*/
|
||
|
|
#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 */
|