From ebebc5939e15e12b4a226552574408772cda5ced Mon Sep 17 00:00:00 2001 From: Stanimir Varbanov Date: Thu, 15 Jun 2017 13:31:58 -0300 Subject: [media] media: venus: vdec: add support for min buffers for capture This adds support for V4L2_CID_MIN_BUFFERS_FOR_CAPTURE get control in venus decoder, it is usable in case when the userspace wants to know minimum capture buffers before calling request_buf for capture queue in mem2mem drivers. Also this will fix an issue found gstreamer v4l2videodec element, i.e. the video decoder element cannot continue because the buffers are insufficient. Signed-off-by: Stanimir Varbanov Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/qcom/venus/vdec_ctrls.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'drivers/media/platform/qcom/venus/vdec_ctrls.c') diff --git a/drivers/media/platform/qcom/venus/vdec_ctrls.c b/drivers/media/platform/qcom/venus/vdec_ctrls.c index 1045fc5b4925..032839bbc967 100644 --- a/drivers/media/platform/qcom/venus/vdec_ctrls.c +++ b/drivers/media/platform/qcom/venus/vdec_ctrls.c @@ -70,6 +70,9 @@ static int vdec_op_g_volatile_ctrl(struct v4l2_ctrl *ctrl) case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER: ctrl->val = ctr->post_loop_deb_mode; break; + case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE: + ctrl->val = inst->num_output_bufs; + break; default: return -EINVAL; }; @@ -87,7 +90,7 @@ int vdec_ctrl_init(struct venus_inst *inst) struct v4l2_ctrl *ctrl; int ret; - ret = v4l2_ctrl_handler_init(&inst->ctrl_handler, 6); + ret = v4l2_ctrl_handler_init(&inst->ctrl_handler, 7); if (ret) return ret; @@ -135,6 +138,11 @@ int vdec_ctrl_init(struct venus_inst *inst) v4l2_ctrl_new_std(&inst->ctrl_handler, &vdec_ctrl_ops, V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER, 0, 1, 1, 0); + ctrl = v4l2_ctrl_new_std(&inst->ctrl_handler, &vdec_ctrl_ops, + V4L2_CID_MIN_BUFFERS_FOR_CAPTURE, 1, 32, 1, 1); + if (ctrl) + ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; + ret = inst->ctrl_handler.error; if (ret) { v4l2_ctrl_handler_free(&inst->ctrl_handler); -- cgit v1.2.3