From 2bb0cfbf8137e02cc32aae3b36f85ef7300e8936 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sat, 9 Jun 2018 14:29:41 +0300 Subject: 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 --- v4l2-source.c | 180 ---------------------------------------------------------- 1 file changed, 180 deletions(-) delete mode 100644 v4l2-source.c (limited to 'v4l2-source.c') diff --git a/v4l2-source.c b/v4l2-source.c deleted file mode 100644 index 7eced6a..0000000 --- a/v4l2-source.c +++ /dev/null @@ -1,180 +0,0 @@ -/* SPDX-License-Identifier: LGPL-2.1-or-later */ -/* - * V4L2 video source - * - * Copyright (C) 2018 Laurent Pinchart - * - * Contact: Laurent Pinchart - */ - -#include -#include -#include - -#include "events.h" -#include "tools.h" -#include "v4l2.h" -#include "v4l2-source.h" -#include "video-buffers.h" - -struct v4l2_source { - struct video_source src; - - struct v4l2_device *vdev; -}; - -#define to_v4l2_source(s) container_of(s, struct v4l2_source, src) - -static void v4l2_source_video_process(void *d) -{ - struct v4l2_source *src = d; - struct video_buffer buf; - int ret; - - ret = v4l2_dequeue_buffer(src->vdev, &buf); - if (ret < 0) - return; - - src->src.handler(src->src.handler_data, &src->src, &buf); -} - -static void v4l2_source_destroy(struct video_source *s) -{ - struct v4l2_source *src = to_v4l2_source(s); - - v4l2_close(src->vdev); - free(src); -} - -static int v4l2_source_set_format(struct video_source *s, - struct v4l2_pix_format *fmt) -{ - struct v4l2_source *src = to_v4l2_source(s); - - return v4l2_set_format(src->vdev, fmt); -} - -static int v4l2_source_alloc_buffers(struct video_source *s, unsigned int nbufs) -{ - struct v4l2_source *src = to_v4l2_source(s); - - return v4l2_alloc_buffers(src->vdev, V4L2_MEMORY_MMAP, nbufs); -} - -static int v4l2_source_export_buffers(struct video_source *s, - struct video_buffer_set **bufs) -{ - struct v4l2_source *src = to_v4l2_source(s); - struct video_buffer_set *buffers; - unsigned int i; - int ret; - - ret = v4l2_export_buffers(src->vdev); - if (ret < 0) - return ret; - - buffers = video_buffer_set_new(src->vdev->buffers.nbufs); - if (!buffers) - return -ENOMEM; - - for (i = 0; i < src->vdev->buffers.nbufs; ++i) { - struct video_buffer *buffer = &src->vdev->buffers.buffers[i]; - - buffers->buffers[i].size = buffer->size; - buffers->buffers[i].dmabuf = buffer->dmabuf; - } - - *bufs = buffers; - return 0; -} - -static int v4l2_source_free_buffers(struct video_source *s) -{ - struct v4l2_source *src = to_v4l2_source(s); - - return v4l2_free_buffers(src->vdev); -} - -static int v4l2_source_stream_on(struct video_source *s) -{ - struct v4l2_source *src = to_v4l2_source(s); - unsigned int i; - int ret; - - /* Queue all buffers. */ - for (i = 0; i < src->vdev->buffers.nbufs; ++i) { - struct video_buffer buf = { - .index = i, - .size = src->vdev->buffers.buffers[i].size, - .dmabuf = src->vdev->buffers.buffers[i].dmabuf, - }; - - ret = v4l2_queue_buffer(src->vdev, &buf); - if (ret < 0) - return ret; - } - - ret = v4l2_stream_on(src->vdev); - if (ret < 0) - return ret; - - events_watch_fd(src->src.events, src->vdev->fd, EVENT_READ, - v4l2_source_video_process, src); - - return 0; -} - -static int v4l2_source_stream_off(struct video_source *s) -{ - struct v4l2_source *src = to_v4l2_source(s); - - events_unwatch_fd(src->src.events, src->vdev->fd, EVENT_READ); - - return v4l2_stream_off(src->vdev); -} - -static int v4l2_source_queue_buffer(struct video_source *s, - struct video_buffer *buf) -{ - struct v4l2_source *src = to_v4l2_source(s); - - return v4l2_queue_buffer(src->vdev, buf); -} - -static const struct video_source_ops v4l2_source_ops = { - .destroy = v4l2_source_destroy, - .set_format = v4l2_source_set_format, - .alloc_buffers = v4l2_source_alloc_buffers, - .export_buffers = v4l2_source_export_buffers, - .free_buffers = v4l2_source_free_buffers, - .stream_on = v4l2_source_stream_on, - .stream_off = v4l2_source_stream_off, - .queue_buffer = v4l2_source_queue_buffer, -}; - -struct video_source *v4l2_video_source_create(const char *devname) -{ - struct v4l2_source *src; - - src = malloc(sizeof *src); - if (!src) - return NULL; - - memset(src, 0, sizeof *src); - src->src.ops = &v4l2_source_ops; - - src->vdev = v4l2_open(devname); - if (!src->vdev) { - free(src); - return NULL; - } - - return &src->src; -} - -void v4l2_video_source_init(struct video_source *s, struct events *events) -{ - struct v4l2_source *src = to_v4l2_source(s); - - src->src.events = events; -} -- cgit v1.2.3