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3b345568bc
The complete handling on the control interface is currently dead.
We return with EOPNOTSUPP for the caller to know that a response
to such requests is not valid. The host however may ask
control interface why these control requests were not available.
For this the UVC_VC_REQUEST_ERROR_CODE_CONTROL is used. As an overall
exception for the control interface we just always return 0x06 as
an response which is representing "not implemented".
This patch is a necessary feature to properly pass the UVC Functionality
Test of the USB3CV Compliance Software.
Fixes: 69c1746139 ('uvcgadget: Properly implement GET_INFO control responses')
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7524>
84 lines
1.8 KiB
C
84 lines
1.8 KiB
C
/*
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* SPDX-License-Identifier: LGPL-2.0-or-later
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*
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* Copyright (C) 2023 Pengutronix e.K. - www.pengutronix.de
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*
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*/
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#pragma once
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#include "linux/usb/g_uvc.h"
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#include "linux/usb/video.h"
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#include "linux/videodev2.h"
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#include <gst/gst.h>
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#include "configfs.h"
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G_BEGIN_DECLS GST_DEBUG_CATEGORY_EXTERN (uvcsink_debug);
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#define REQUEST_ERROR_CODE_NO_ERROR 0x0
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#define REQUEST_ERROR_CODE_INVALID_REQUEST 0x6
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#define GST_TYPE_UVCSINK (gst_uvc_sink_get_type())
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G_DECLARE_FINAL_TYPE (GstUvcSink, gst_uvc_sink, GST, UVCSINK, GstBin)
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GST_ELEMENT_REGISTER_DECLARE (uvcsink);
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struct _GstUvcSink
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{
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GstBin bin;
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GstElement *fakesink;
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GstElement *v4l2sink;
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GstPad *sinkpad;
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GstPad *fakesinkpad;
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GstPad *v4l2sinkpad;
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/* streaming status */
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gboolean streaming;
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GstCaps *probed_caps;
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GstCaps *cur_caps;
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/* a poll for video_fd */
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GstPoll *poll;
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GstPollFD pollfd;
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struct uvc_function_config *fc;
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struct {
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int bFrameIndex;
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int bFormatIndex;
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unsigned int dwFrameInterval;
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} cur;
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struct uvc_streaming_control probe;
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struct uvc_streaming_control commit;
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int control;
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int request_error_code;
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/* probes */
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int buffer_peer_probe_id;
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int idle_probe_id;
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GstClock *v4l2_clock;
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int caps_changed;
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int streamon;
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int streamoff;
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};
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#define UVCSINK_MSG_LOCK(v) g_mutex_lock(&(v)->msg_lock)
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#define UVCSINK_MSG_UNLOCK(v) g_mutex_unlock(&(v)->msg_lock)
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int uvc_events_process_data(GstUvcSink * self,
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const struct uvc_request_data *data);
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int uvc_events_process_setup(GstUvcSink * self,
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const struct usb_ctrlrequest *ctrl,
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struct uvc_request_data *resp);
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int uvc_fill_streaming_control(GstUvcSink * self,
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struct uvc_streaming_control *ctrl,
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int iframe, int iformat, unsigned int dwival);
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G_END_DECLS
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