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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2019-07-12 09:37:51 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2019-07-14 16:00:40 +0300
commit33d3c4e2046044ec595ac2cb7ee7db4011e83fb7 (patch)
treea1a07feaa20308e0a34a36f5edc01566b8c4b43a /include
parent185fe3d4b4d1264b2d72f8c92d17e248092efc46 (diff)
libcamera: request: Add cookie to make request tracking easier
Applications often have to map requests queued to a camera to external resources. To make this easy, add a 64-bit integer cookie to the Request class that is set when the request is created and can be retrieved at any time, especially in the request completion handler. The cookie is completely transparent for libcamera and is never modified. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Diffstat (limited to 'include')
-rw-r--r--include/libcamera/camera.h3
-rw-r--r--include/libcamera/request.h5
2 files changed, 6 insertions, 2 deletions
diff --git a/include/libcamera/camera.h b/include/libcamera/camera.h
index 6d693d9a..21fac550 100644
--- a/include/libcamera/camera.h
+++ b/include/libcamera/camera.h
@@ -10,6 +10,7 @@
#include <map>
#include <memory>
#include <set>
+#include <stdint.h>
#include <string>
#include <libcamera/controls.h>
@@ -93,7 +94,7 @@ public:
int allocateBuffers();
int freeBuffers();
- Request *createRequest();
+ Request *createRequest(uint64_t cookie = 0);
int queueRequest(Request *request);
int start();
diff --git a/include/libcamera/request.h b/include/libcamera/request.h
index a93468d7..4fdb3b51 100644
--- a/include/libcamera/request.h
+++ b/include/libcamera/request.h
@@ -8,6 +8,7 @@
#define __LIBCAMERA_REQUEST_H__
#include <map>
+#include <stdint.h>
#include <unordered_set>
#include <libcamera/controls.h>
@@ -29,7 +30,7 @@ public:
RequestCancelled,
};
- explicit Request(Camera *camera);
+ Request(Camera *camera, uint64_t cookie = 0);
Request(const Request &) = delete;
Request &operator=(const Request &) = delete;
@@ -38,6 +39,7 @@ public:
int setBuffers(const std::map<Stream *, Buffer *> &streamMap);
Buffer *findBuffer(Stream *stream) const;
+ uint64_t cookie() const { return cookie_; }
Status status() const { return status_; }
bool hasPendingBuffers() const { return !pending_.empty(); }
@@ -56,6 +58,7 @@ private:
std::map<Stream *, Buffer *> bufferMap_;
std::unordered_set<Buffer *> pending_;
+ const uint64_t cookie_;
Status status_;
};