diff options
Diffstat (limited to 'drivers/media/video/cx18/cx18-queue.h')
| -rw-r--r-- | drivers/media/video/cx18/cx18-queue.h | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/drivers/media/video/cx18/cx18-queue.h b/drivers/media/video/cx18/cx18-queue.h index 7f93bb13c09..456cec3bc28 100644 --- a/drivers/media/video/cx18/cx18-queue.h +++ b/drivers/media/video/cx18/cx18-queue.h @@ -4,6 +4,7 @@ * Derived from ivtv-queue.h * * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> + * Copyright (C) 2008 Andy Walls <awalls@radix.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 @@ -42,11 +43,26 @@ static inline void cx18_buf_sync_for_device(struct cx18_stream *s, void cx18_buf_swap(struct cx18_buffer *buf); /* cx18_queue utility functions */ +struct cx18_queue *_cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf, + struct cx18_queue *q, int to_front); + +static inline +struct cx18_queue *cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf, + struct cx18_queue *q) +{ + return _cx18_enqueue(s, buf, q, 0); /* FIFO */ +} + +static inline +struct cx18_queue *cx18_push(struct cx18_stream *s, struct cx18_buffer *buf, + struct cx18_queue *q) +{ + return _cx18_enqueue(s, buf, q, 1); /* LIFO */ +} + void cx18_queue_init(struct cx18_queue *q); -void cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf, - struct cx18_queue *q); struct cx18_buffer *cx18_dequeue(struct cx18_stream *s, struct cx18_queue *q); -struct cx18_buffer *cx18_queue_get_buf_irq(struct cx18_stream *s, u32 id, +struct cx18_buffer *cx18_queue_get_buf(struct cx18_stream *s, u32 id, u32 bytesused); void cx18_flush_queues(struct cx18_stream *s); |