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use RAII for resource management

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This commit is contained in:
artemp 2014-12-10 09:44:37 +01:00
parent ef64b4937c
commit 917d346093
1 changed files with 8 additions and 9 deletions
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17
include/mapnik/tiff_io.hpp
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@ -268,6 +268,8 @@ void set_tiff_config(TIFF* output, tiff_config & config)
template <typename T1, typename T2>
void save_as_tiff(T1 & file, T2 const& image, tiff_config & config)
{
using pixel_type = typename T2::pixel_type;
const int width = image.width();
const int height = image.height();
@ -309,16 +311,14 @@ void save_as_tiff(T1 & file, T2 const& image, tiff_config & config)
TIFFSetField(output, TIFFTAG_ROWSPERSTRIP, 1);
int next_scanline = 0;
typename T2::pixel_type * row = reinterpret_cast<typename T2::pixel_type*>(::operator new(image.getRowSize()));
std::unique_ptr<pixel_type[]> row (new pixel_type[image.getRowSize()]);
while (next_scanline < height)
{
memcpy(row, image.getRow(next_scanline), image.getRowSize());
memcpy(row.get(), image.getRow(next_scanline), image.getRowSize());
//typename T2::pixel_type * row = const_cast<typename T2::pixel_type *>(image.getRow(next_scanline));
TIFFWriteScanline(output, row, next_scanline, 0);
TIFFWriteScanline(output, row.get(), next_scanline, 0);
++next_scanline;
}
::operator delete(row);
}
else
{
@ -326,11 +326,10 @@ void save_as_tiff(T1 & file, T2 const& image, tiff_config & config)
TIFFSetField(output, TIFFTAG_TILELENGTH, height);
TIFFSetField(output, TIFFTAG_TILEDEPTH, 1);
// Process as tiles
typename T2::pixel_type * image_data = reinterpret_cast<typename T2::pixel_type*>(::operator new(image.getSize()));
memcpy(image_data, image.getData(), image.getSize());
std::unique_ptr<pixel_type[]> image_data (new pixel_type[image.getSize()]);
memcpy(image_data.get(), image.getData(), image.getSize());
//typename T2::pixel_type * image_data = const_cast<typename T2::pixel_type *>(image.getData());
TIFFWriteTile(output, image_data, 0, 0, 0, 0);
::operator delete(image_data);
TIFFWriteTile(output, image_data.get(), 0, 0, 0, 0);
}
// TODO - handle palette images
// std::vector<mapnik::rgb> const& palette