本文整理汇总了C++中openimageio::ImageSpec类的典型用法代码示例。如果您正苦于以下问题：C++ ImageSpec类的具体用法？C++ ImageSpec怎么用？C++ ImageSpec使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了ImageSpec类的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: do_write_image
void tiff_writer_t::do_write_image( const boost::filesystem::path& p,
const image::const_image_view_t& view,
const adobe::dictionary_t& params) const
{
int channels = adobe::get_value( params, adobe::name_t( "channels")).cast<int>();
int depth = adobe::get_value( params, adobe::name_t( "type")).cast<int>();
int compress = adobe::get_value( params, adobe::name_t( "compress")).cast<int>();
std::auto_ptr<OpenImageIO::ImageOutput> out( OpenImageIO::ImageOutput::create( p.external_file_string()));
if( !out.get())
throw std::runtime_error( "Write TIFF: Can't open output file");
if( channels)
channels = 3;
else
channels = 4;
OpenImageIO::ImageSpec spec;
switch( depth)
{
case 1:
spec = OpenImageIO::ImageSpec( view.width(), view.height(), channels, TypeDesc::UINT8);
break;
case 2:
spec = OpenImageIO::ImageSpec( view.width(), view.height(), channels, TypeDesc::UINT16);
break;
case 3:
spec = OpenImageIO::ImageSpec( view.width(), view.height(), channels, TypeDesc::FLOAT);
break;
}
spec.quant_dither = 0.0f;
switch( compress)
{
case 0:
spec.attribute( "compress", "none");
break;
case 1:
spec.attribute( "compress", "lzw");
break;
case 2:
spec.attribute( "compress", "zip");
break;
}
if( !out->open( p.external_file_string(), spec))
throw( std::runtime_error( "Can't open output file"));
std::vector<image::pixel_t> scanline( view.width());
for( int y = 0; y < view.height(); ++y)
{
std::copy( view.row_begin( y), view.row_end( y), scanline.begin());
if( depth != 3)
{
apply_gamma( 1.0f / 2.2f, scanline.begin(), scanline.end());
clamp( scanline.begin(), scanline.end());
}
if( !out->write_scanline( y, 0, TypeDesc::FLOAT, (void *) &( *scanline.begin()), sizeof( image::pixel_t)))
throw( std::runtime_error( "Write image: Can't write pixels"));
}
if( !out->close())
throw std::runtime_error( "Write image: Can't close file");
}