diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2018-06-09 12:43:16 +0300 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2018-06-09 12:43:16 +0300 |
| commit | e8fe6b593e1f10bd6aeb5f16674b6ee1142625c6 (patch) | |
| tree | 1533eeb0b640b02dade590fcd71cac62a7fe0171 /video-source.h | |
| parent | df651c5b397a4b6648695cdf725a8243ff512dcd (diff) | |
video-source: Add abstract video source class
The video_source is an abstract class representing a source of video
buffers. It can be subclassed by implementing the video_source_ops
operations to support different types of video sources.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Diffstat (limited to 'video-source.h')
| -rw-r--r-- | video-source.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/video-source.h b/video-source.h new file mode 100644 index 0000000..fffcba3 --- /dev/null +++ b/video-source.h @@ -0,0 +1,55 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Abstract video source + * + * Copyright (C) 2018 Laurent Pinchart + * + * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com> + */ +#ifndef __VIDEO_SOURCE_H__ +#define __VIDEO_SOURCE_H__ + +struct v4l2_buffer; +struct v4l2_pix_format; +struct video_buffer; +struct video_buffer_set; +struct video_source; + +struct video_source_ops { + void(*destroy)(struct video_source *src); + int(*set_format)(struct video_source *src, struct v4l2_pix_format *fmt); + int(*alloc_buffers)(struct video_source *src, unsigned int nbufs); + int(*export_buffers)(struct video_source *src, + struct video_buffer_set **buffers); + int(*free_buffers)(struct video_source *src); + int(*stream_on)(struct video_source *src); + int(*stream_off)(struct video_source *src); + int(*queue_buffer)(struct video_source *src, struct video_buffer *buf); +}; + +typedef void(*video_source_buffer_handler_t)(void *, struct video_source *, + struct video_buffer *); + +struct video_source { + const struct video_source_ops *ops; + struct events *events; + video_source_buffer_handler_t handler; + void *handler_data; +}; + +void video_source_set_buffer_handler(struct video_source *src, + video_source_buffer_handler_t handler, + void *data); +void video_source_destroy(struct video_source *src); +int video_source_set_format(struct video_source *src, + struct v4l2_pix_format *fmt); +int video_source_alloc_buffers(struct video_source *src, unsigned int nbufs); +int video_source_export_buffers(struct video_source *src, + struct video_buffer_set **buffers); +int video_source_free_buffers(struct video_source *src); +int video_source_stream_on(struct video_source *src); +int video_source_stream_off(struct video_source *src); +int video_source_queue_buffer(struct video_source *src, + struct video_buffer *buf); + +#endif /* __VIDEO_SOURCE_H__ */ |