C++ (Cpp) to_isp_video示例

示例#1

文件： ispvideo.c 项目： 96boards-hikey/wilink8-wlan_wl18xx

/* Return a pointer to the ISP video instance at the far end of the pipeline. */
static struct isp_video *
isp_video_far_end(struct isp_video *video)
{
    struct media_entity_graph graph;
    struct media_entity *entity = &video->video.entity;
    struct media_device *mdev = entity->parent;
    struct isp_video *far_end = NULL;

    mutex_lock(&mdev->graph_mutex);
    media_entity_graph_walk_start(&graph, entity);

    while ((entity = media_entity_graph_walk_next(&graph))) {
        if (entity == &video->video.entity)
            continue;

        if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
            continue;

        far_end = to_isp_video(media_entity_to_video_device(entity));
        if (far_end->type != video->type)
            break;

        far_end = NULL;
    }

    mutex_unlock(&mdev->graph_mutex);
    return far_end;
}

示例#2

文件： ispvideo.c 项目： AK101111/linux

/* Return a pointer to the ISP video instance at the far end of the pipeline. */
static int isp_video_get_graph_data(struct isp_video *video,
				    struct isp_pipeline *pipe)
{
	struct media_entity_graph graph;
	struct media_entity *entity = &video->video.entity;
	struct media_device *mdev = entity->graph_obj.mdev;
	struct isp_video *far_end = NULL;
	int ret;

	mutex_lock(&mdev->graph_mutex);
	ret = media_entity_graph_walk_init(&graph, entity->graph_obj.mdev);
	if (ret) {
		mutex_unlock(&mdev->graph_mutex);
		return ret;
	}

	media_entity_graph_walk_start(&graph, entity);

	while ((entity = media_entity_graph_walk_next(&graph))) {
		struct isp_video *__video;

		media_entity_enum_set(&pipe->ent_enum, entity);

		if (far_end != NULL)
			continue;

		if (entity == &video->video.entity)
			continue;

		if (!is_media_entity_v4l2_video_device(entity))
			continue;

		__video = to_isp_video(media_entity_to_video_device(entity));
		if (__video->type != video->type)
			far_end = __video;
	}

	mutex_unlock(&mdev->graph_mutex);

	media_entity_graph_walk_cleanup(&graph);

	if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
		pipe->input = far_end;
		pipe->output = video;
	} else {
		if (far_end == NULL)
			return -EPIPE;

		pipe->input = video;
		pipe->output = far_end;
	}

	return 0;
}

示例#3

文件： ispvideo.c 项目： BORETS24/common.git-android-4.4

/* Return a pointer to the ISP video instance at the far end of the pipeline. */
static int isp_video_get_graph_data(struct isp_video *video,
				    struct isp_pipeline *pipe)
{
	struct media_entity_graph graph;
	struct media_entity *entity = &video->video.entity;
	struct media_device *mdev = entity->parent;
	struct isp_video *far_end = NULL;

	mutex_lock(&mdev->graph_mutex);
	media_entity_graph_walk_start(&graph, entity);

	while ((entity = media_entity_graph_walk_next(&graph))) {
		struct isp_video *__video;

		pipe->entities |= 1 << entity->id;

		if (far_end != NULL)
			continue;

		if (entity == &video->video.entity)
			continue;

		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
			continue;

		__video = to_isp_video(media_entity_to_video_device(entity));
		if (__video->type != video->type)
			far_end = __video;
	}

	mutex_unlock(&mdev->graph_mutex);

	if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
		pipe->input = far_end;
		pipe->output = video;
	} else {
		if (far_end == NULL)
			return -EPIPE;

		pipe->input = video;
		pipe->output = far_end;
	}

	return 0;
}