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use TIFFReadTile (or TIFFReadEncodedTile) instead of TIFFReadRGBATile to have consistent orientation

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(FIXME: python tests failures)
This commit is contained in:
artemp 2014-12-08 18:55:40 +01:00
parent 017def88b1
commit 7fcc4a0846
1 changed files with 16 additions and 14 deletions
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30
src/tiff_reader.cpp
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@ -256,7 +256,7 @@ void tiff_reader<T>::init()
MAPNIK_LOG_DEBUG(tiff_reader) << "orientation: " << orientation;
char msg[1024];
if (TIFFRGBAImageOK(tif,msg))
if (true)//TIFFRGBAImageOK(tif,msg))
{
if (TIFFIsTiled(tif))
{
@ -394,21 +394,28 @@ struct tiff_reader_traits
{
using image_data_type = T;
using pixel_type = typename image_data_type::pixel_type;
static bool read_tile(TIFF * tif, unsigned x, unsigned y, pixel_type* buf)
static bool read_tile(TIFF * tif, unsigned x, unsigned y, pixel_type* buf, std::size_t tile_size)
{
return (TIFFReadTile(tif, buf, x, y, 0, 0) != -1);
//return (TIFFReadEncodedTile(tif, TIFFComputeTile(tif, x,y,0,0), buf, TIFFTileSize(tif)) != -1);
}
};
// specialization for RGB images
// specialization for RGB images - TODO: move allocation out to avoid allocating rgb buffer per tile
template <>
struct tiff_reader_traits<image_data_rgba8>
{
using pixel_type = std::uint32_t;
static bool read_tile(TIFF * tif, unsigned x, unsigned y, pixel_type* buf)
static bool read_tile(TIFF * tif, unsigned x, unsigned y, pixel_type* buf, std::size_t tile_size)
{
return (TIFFReadRGBATile(tif, x, y, buf) != -1);
}
std::unique_ptr<rgb8[]> rgb_buf(new rgb8[tile_size]);
if (TIFFReadTile(tif, rgb_buf.get(), x, y, 0, 0) != -1)
{
std::transform(rgb_buf.get(), rgb_buf.get() + tile_size, buf, detail::rgb8_to_rgba8());
return true;
}
return false;
}
};
}
@ -539,15 +546,12 @@ void tiff_reader<T>::read_tiled(unsigned x0,unsigned y0, ImageData & image)
ty0 = std::max(y0, static_cast<unsigned>(y)) - y;
ty1 = std::min(height + y0, static_cast<unsigned>(y + tile_height_)) - y;
//int n0 = tile_height_ - ty1;
//int n1 = tile_height_ - ty0 - 1;
int n0 = ty0;
int n1 = ty1;
for (int x = start_x; x < end_x; x += tile_width_)
{
if (!detail::tiff_reader_traits<ImageData>::read_tile(tif, x, y, buf.get()))
if (!detail::tiff_reader_traits<ImageData>::read_tile(tif, x, y, buf.get(), tile_width_ * tile_height_))
{
MAPNIK_LOG_ERROR(tiff_reader) << "read_tile(...) failed";
break;
@ -555,10 +559,7 @@ void tiff_reader<T>::read_tiled(unsigned x0,unsigned y0, ImageData & image)
tx0 = std::max(x0, static_cast<unsigned>(x));
tx1 = std::min(width + x0, static_cast<unsigned>(x + tile_width_));
row = y + ty0 - y0;
//for (int n = n1; n >= n0; --n, ++row)
//{
// image.setRow(row, tx0 - x0, tx1 - x0, &buf[n * tile_width_ + tx0 - x]);
//}
for (int n = n0; n < n1; ++n, ++row)
{
image.setRow(row, tx0 - x0, tx1 - x0, &buf[n * tile_width_ + tx0 - x]);
@ -568,6 +569,7 @@ void tiff_reader<T>::read_tiled(unsigned x0,unsigned y0, ImageData & image)
}
}
template <typename T>
void tiff_reader<T>::read_stripped(unsigned x0,unsigned y0,image_data_rgba8& image)
{