Split UVC gadget into a library and test application

Split the project into a UVC gadget library and a test application. To
avoid rolling out a custom build system, switch to CMake.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 55 insertions, 0 deletions

diff --git a/include/uvcgadget/video-source.h b/include/uvcgadget/video-source.h
new file mode 100644
index 0000000..fffcba3
--- /dev/null
+++ b/include/uvcgadget/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__ */