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solve issue 23808

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This commit is contained in:
unknown 2023-06-15 21:29:18 +02:00
parent 0d7c039ea1
commit 8762c37c22
1 changed files with 30 additions and 2 deletions
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32
modules/videoio/src/cap_images.cpp
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@ -113,7 +113,16 @@ void CvCapture_Images::close()
bool CvCapture_Images::grabFrame()
{
cv::String filename = cv::format(filename_pattern.c_str(), (int)(firstframe + currentframe));
cv::String filename;
if (length == 1)
if (currentframe < length)
filename = filename_pattern;
else
{
return false;
}
else
filename = cv::format(filename_pattern.c_str(), (int)(firstframe + currentframe));
CV_Assert(!filename.empty());
if (grabbedInOpen)
@ -250,6 +259,7 @@ std::string icvExtractPattern(const std::string& filename, unsigned *offset)
if (pos == len)
{
return "";
CV_Error_(Error::StsBadArg, ("CAP_IMAGES: can't find starting number (in the name of file): %s", filename.c_str()));
}
@ -292,7 +302,25 @@ bool CvCapture_Images::open(const std::string& _filename)
CV_Assert(!_filename.empty());
filename_pattern = icvExtractPattern(_filename, &offset);
CV_Assert(!filename_pattern.empty());
if (filename_pattern.empty())
{
filename_pattern = _filename;
cv::String filename = _filename.c_str();
if (!utils::fs::exists(filename))
{
return false;
}
if (!haveImageReader(filename))
{
CV_LOG_INFO(NULL, "CAP_IMAGES: Stop scanning. Can't read image file: " << filename);
}
length = 1;
// grab frame to enable properties retrieval
bool grabRes = grabFrame();
grabbedInOpen = true;
currentframe = 0;
return grabRes;
}
// determine the length of the sequence
for (length = 0; ;)