C++ (Cpp) vb2_prepare_buf Exemples

Exemple #1

static int fimc_lite_prepare_buf(struct file *file, void *priv,
				 struct v4l2_buffer *b)
{
	struct fimc_lite *fimc = video_drvdata(file);

	return vb2_prepare_buf(&fimc->vb_queue, b);
}

Exemple #2

static int fimc_cap_prepare_buf(struct file *file, void *priv,
				struct v4l2_buffer *b)
{
	struct fimc_dev *fimc = video_drvdata(file);

	return vb2_prepare_buf(&fimc->vid_cap.vbq, b);
}

Exemple #3

Fichier : videobuf2-v4l2.c Projet : 513855417/linux

int vb2_ioctl_prepare_buf(struct file *file, void *priv,
			  struct v4l2_buffer *p)
{
	struct video_device *vdev = video_devdata(file);

	if (vb2_queue_is_busy(vdev, file))
		return -EBUSY;
	return vb2_prepare_buf(vdev->queue, p);
}

Exemple #4

Fichier : v4l2-mem2mem.c Projet : mhei/linux

int v4l2_m2m_prepare_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
                         struct v4l2_buffer *buf)
{
    struct vb2_queue *vq;
    int ret;

    vq = v4l2_m2m_get_vq(m2m_ctx, buf->type);
    ret = vb2_prepare_buf(vq, buf);
    if (!ret)
        v4l2_m2m_try_schedule(m2m_ctx);

    return ret;
}