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annotate_cv_stage: Allow date/time format directives (as per strftime) #294

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Merged
naushir merged 1 commit into from
May 19, 2022
+7 −0
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annotate_cv_stage: Allow date/time format directives (as per strftime) #294

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7 changes: 7 additions & 0 deletions post_processing_stages/annotate_cv_stage.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,8 @@

// The text string can include the % directives supported by FrameInfo.

#include <time.h>

#include <libcamera/stream.h>

#include "core/frame_info.hpp"
Expand Down Expand Up @@ -87,6 +89,11 @@ bool AnnotateCvStage::Process(CompletedRequestPtr &completed_request)
// Other post-processing stages can supply metadata to update the text.
completed_request->post_process_metadata.Get("annotate.text", text_);
std::string text = info.ToString(text_);
char text_with_date[256];
time_t t = time(NULL);
tm *tm_ptr = localtime(&t);
if (strftime(text_with_date, sizeof(text_with_date), text.c_str(), tm_ptr) != 0)
text = std::string(text_with_date);

uint8_t *ptr = (uint8_t *)buffer.data();
Mat im(info_.height, info_.width, CV_8U, ptr, info_.stride);
Expand Down