Read Webp from Memory Error

crackwitz · April 24, 2021, 1:21pm

possible. please post a webp image file for testing.

using some webp file from wikipedia, I could not reproduce this.

please reduce your code to the bare minimum that reproduces the issue.

opencv/opencv/blob/fcaeeac931922cd2cab4382419b4af77f0c4b0dd/modules/imgcodecs/src/grfmt_webp.cpp#L164


      
          CV_CheckEQ(img.rows, m_height, "");
          
          if (m_buf.empty())
          {
              fs.seekg(0, std::ios::beg); CV_Assert(fs && "File stream error");
              data.create(1, validateToInt(fs_size), CV_8UC1);
              fs.read((char*)data.ptr(), fs_size);
              CV_Assert(fs && "Can't read file data");
              fs.close();
          }
          CV_Assert(data.type() == CV_8UC1); CV_Assert(data.rows == 1);
          
          {
              Mat read_img;
              CV_CheckType(img.type(), img.type() == CV_8UC1 || img.type() == CV_8UC3 || img.type() == CV_8UC4, "");
              if (img.type() != m_type)
              {
                  read_img.create(m_height, m_width, m_type);
              }
              else
              {

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Read Webp from Memory Error

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