C++ (Cpp) vb2_wait_for_all_buffers示例

示例#1

文件： gsc-m2m.c 项目： hedongjie/m35x

static void gsc_m2m_job_abort(void *priv)
{
	struct gsc_ctx *ctx = priv;
	struct gsc_dev *gsc = ctx->gsc_dev;
	int ret;

	vb2_wait_for_all_buffers(v4l2_m2m_get_src_vq(ctx->m2m_ctx));
	vb2_wait_for_all_buffers(v4l2_m2m_get_dst_vq(ctx->m2m_ctx));
	ret = gsc_ctx_stop_req(ctx);
	/* FIXME: need to add v4l2_m2m_job_finish(fail) if ret is timeout */
	if (ret < 0)
		dev_err(&gsc->pdev->dev, "wait timeout : %s\n", __func__);
}

示例#2

文件： gsc-capture.c 项目： BigBot96/android_kernel_samsung_gts2wifi

static int gsc_capture_stop_streaming(struct vb2_queue *q)
{
	struct gsc_ctx *ctx = q->drv_priv;
	struct gsc_dev *gsc = ctx->gsc_dev;

	vb2_wait_for_all_buffers(q);

	return gsc_cap_stop_capture(gsc);
}

示例#3

文件： gsc-m2m.c 项目： hedongjie/m35x

static int gsc_m2m_stop_streaming(struct vb2_queue *q)
{
	struct gsc_ctx *ctx = q->drv_priv;
	struct gsc_dev *gsc = ctx->gsc_dev;
	int ret;

	vb2_wait_for_all_buffers(q);
	ret = gsc_ctx_stop_req(ctx);
	/* FIXME: need to add v4l2_m2m_job_finish(fail) if ret is timeout */
	if (ret < 0)
		dev_err(&gsc->pdev->dev, "wait timeout : %s\n", __func__);

	return 0;
}

示例#4

文件： fthd_v4l2.c 项目： chatziko/bcwc_pcie

static void fthd_stop_streaming(struct vb2_queue *vq)
{
	struct fthd_private *dev_priv = vb2_get_drv_priv(vq);
	struct h2t_buf_ctx *ctx;
	int ret, i;

	ret = fthd_stop_channel(dev_priv, 0);
	if (!ret) {
		pr_debug("waiting for buffers...\n");
		vb2_wait_for_all_buffers(vq);
		pr_debug("done\n");
	} else {
	    /* Firmware doesn't respond. */
	    for(i = 0; i < FTHD_BUFFERS;i++) {
		    ctx = dev_priv->h2t_bufs + i;
		    if (ctx->state == BUF_DRV_QUEUED || ctx->state == BUF_HW_QUEUED) {
			    vb2_buffer_done(ctx->vb, VB2_BUF_STATE_DONE);
			    ctx->vb = NULL;
			    ctx->state = BUF_ALLOC;
		}
	    }
	}
}