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/* 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(*set_frame_rate)(struct video_source *src, unsigned int fps);
int(*alloc_buffers)(struct video_source *src, unsigned int nbufs);
int(*export_buffers)(struct video_source *src,
struct video_buffer_set **buffers);
int(*import_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);
void(*fill_buffer)(struct video_source *src, struct video_buffer *buf);
};
typedef void(*video_source_buffer_handler_t)(void *, struct video_source *,
struct video_buffer *);
/*
* video_source_type - Enumeration of the different kinds of video source
* @VIDEO_SOURCE_DMABUF A source that can share data with the sink via a
* DMA file descriptor.
* @VIDEO_SOURCE_STATIC A source that draws data from an unchanging
* buffer such as a .jpg file
*/
enum video_source_type {
VIDEO_SOURCE_DMABUF,
VIDEO_SOURCE_STATIC,
};
struct video_source {
const struct video_source_ops *ops;
struct events *events;
video_source_buffer_handler_t handler;
void *handler_data;
enum video_source_type type;
};
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_set_frame_rate(struct video_source *src, unsigned int fps);
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_import_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);
void video_source_fill_buffer(struct video_source *src,
struct video_buffer *buf);
#endif /* __VIDEO_SOURCE_H__ */
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