diff options
author | Kieran Bingham <kieran.bingham@ideasonboard.com> | 2019-04-26 16:50:12 +0200 |
---|---|---|
committer | Kieran Bingham <kieran.bingham@ideasonboard.com> | 2019-08-13 15:36:04 +0100 |
commit | 4f7625cca7ecb4ae5257e7e65ad86d046568db51 (patch) | |
tree | 15b97fac32612b8d237a5feeaf49a66ba656231e /src/libcamera/include/v4l2_videodevice.h | |
parent | 3a278eb460810e6774915fc058d420549cfb00d3 (diff) |
libcamera: v4l2_videodevice: Support M2M devices
V4L2 M2M devices represent a V4L2Device with two queues: One output, and
one capture on a single device node.
Represent this by instantiating a V4L2VideoDevice for each queue type,
and preparing each device for its queue.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Diffstat (limited to 'src/libcamera/include/v4l2_videodevice.h')
-rw-r--r-- | src/libcamera/include/v4l2_videodevice.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/libcamera/include/v4l2_videodevice.h b/src/libcamera/include/v4l2_videodevice.h index f5c8da93..0fc2dcd8 100644 --- a/src/libcamera/include/v4l2_videodevice.h +++ b/src/libcamera/include/v4l2_videodevice.h @@ -71,6 +71,11 @@ struct V4L2Capability final : v4l2_capability { V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_VIDEO_OUTPUT_MPLANE); } + bool isM2M() const + { + return device_caps() & (V4L2_CAP_VIDEO_M2M | + V4L2_CAP_VIDEO_M2M_MPLANE); + } bool isMeta() const { return device_caps() & (V4L2_CAP_META_CAPTURE | @@ -124,6 +129,7 @@ public: V4L2VideoDevice &operator=(const V4L2VideoDevice &) = delete; int open(); + int open(int handle, enum v4l2_buf_type type); void close(); const char *driverName() const { return caps_.driver(); } @@ -182,6 +188,25 @@ private: EventNotifier *fdEvent_; }; +class V4L2M2MDevice +{ +public: + V4L2M2MDevice(const std::string &deviceNode); + ~V4L2M2MDevice(); + + int open(); + void close(); + + V4L2VideoDevice *output() { return output_; } + V4L2VideoDevice *capture() { return capture_; } + +private: + std::string deviceNode_; + + V4L2VideoDevice *output_; + V4L2VideoDevice *capture_; +}; + } /* namespace libcamera */ #endif /* __LIBCAMERA_V4L2_VIDEODEVICE_H__ */ |