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我有从我的手机拍摄的图像的原始数据,它的分辨率是480 * 800,格式是RGBA。然后我想用wxImage函数将它保存到一个jpeg图像中。鳕鱼列表如下:如何用wxImage保存图像?
wxFile m_bufferfile = wxFile(wxT("out.raw"));
if(!m_bufferfile->IsOpened())
{
wxLogMessage(_T("Fail to open the config file."));
}
m_count = m_bufferfile->Length();
unsigned char* rawdata = new unsigned char[m_count];
for(unsigned int i = 0; i < m_count; i=i+4)
{
m_bufferfile->Seek(1,wxFromCurrent);
m_bufferfile->Read(rawdata, 3);
}
wxImage *image = new wxImage(480, 800, rawdata, false);
image->SaveFile(wxT("raw.jpg"),wxBITMAP_TYPE_JPEG);
当我打开raw.jpg,它变成黑色。 有问题吗?