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[unit-test] enable tiff test

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This commit is contained in:
Mathis Logemann 2022-01-27 18:40:22 +01:00
parent 3012ea43ee
commit 3b1d09702c
3 changed files with 764 additions and 723 deletions
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src/tiff_reader.cpp
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@ -38,6 +38,7 @@ MAPNIK_DISABLE_WARNING_PUSH
MAPNIK_DISABLE_WARNING_POP
#include <mapnik/mapped_memory_cache.hpp>
#endif
#include "tiff_reader.hpp"
// stl
#include <memory>
@ -46,7 +47,7 @@ MAPNIK_DISABLE_WARNING_POP
namespace mapnik { namespace detail {
static toff_t tiff_seek_proc(thandle_t handle, toff_t off, int whence)
toff_t tiff_seek_proc(thandle_t handle, toff_t off, int whence)
{
std::istream* in = reinterpret_cast<std::istream*>(handle);
@ -65,12 +66,12 @@ static toff_t tiff_seek_proc(thandle_t handle, toff_t off, int whence)
return static_cast<toff_t>(in->tellg());
}
static int tiff_close_proc(thandle_t)
int tiff_close_proc(thandle_t)
{
return 0;
}
static toff_t tiff_size_proc(thandle_t handle)
toff_t tiff_size_proc(thandle_t handle)
{
std::istream* in = reinterpret_cast<std::istream*>(handle);
std::ios::pos_type pos = in->tellg();
@ -80,7 +81,7 @@ static toff_t tiff_size_proc(thandle_t handle)
return static_cast<toff_t>(len);
}
static tsize_t tiff_read_proc(thandle_t handle, tdata_t buf, tsize_t size)
tsize_t tiff_read_proc(thandle_t handle, tdata_t buf, tsize_t size)
{
std::istream * in = reinterpret_cast<std::istream*>(handle);
std::streamsize request_size = size;
@ -90,118 +91,21 @@ static tsize_t tiff_read_proc(thandle_t handle, tdata_t buf, tsize_t size)
return static_cast<tsize_t>(in->gcount());
}
static tsize_t tiff_write_proc(thandle_t , tdata_t , tsize_t)
tsize_t tiff_write_proc(thandle_t , tdata_t , tsize_t)
{
return 0;
}
static void tiff_unmap_proc(thandle_t, tdata_t, toff_t)
void tiff_unmap_proc(thandle_t, tdata_t, toff_t)
{
}
static int tiff_map_proc(thandle_t, tdata_t* , toff_t*)
int tiff_map_proc(thandle_t, tdata_t* , toff_t*)
{
return 0;
}
template <typename T>
struct tiff_io_traits
{
using input_stream_type = std::istream;
};
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
template <>
struct tiff_io_traits<boost::interprocess::ibufferstream>
{
using input_stream_type = boost::interprocess::ibufferstream;
};
#endif
}
template <typename T>
class tiff_reader : public image_reader
{
using tiff_ptr = std::shared_ptr<TIFF>;
using source_type = T;
using input_stream = typename detail::tiff_io_traits<source_type>::input_stream_type;
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
mapnik::mapped_region_ptr mapped_region_;
#endif
struct tiff_closer
{
void operator() (TIFF * tif)
{
if (tif != 0) TIFFClose(tif);
}
};
private:
source_type source_;
input_stream stream_;
tiff_ptr tif_;
int read_method_;
int rows_per_strip_;
int tile_width_;
int tile_height_;
std::size_t width_;
std::size_t height_;
boost::optional<box2d<double> > bbox_;
unsigned bps_;
unsigned sample_format_;
unsigned photometric_;
unsigned bands_;
unsigned planar_config_;
unsigned compression_;
bool has_alpha_;
bool is_tiled_;
public:
enum TiffType {
generic=1,
stripped,
tiled
};
explicit tiff_reader(std::string const& filename);
tiff_reader(char const* data, std::size_t size);
virtual ~tiff_reader();
unsigned width() const final;
unsigned height() const final;
boost::optional<box2d<double> > bounding_box() const final;
inline bool has_alpha() const final { return has_alpha_; }
void read(unsigned x,unsigned y,image_rgba8& image) final;
image_any read(unsigned x, unsigned y, unsigned width, unsigned height) final;
// methods specific to tiff reader
unsigned bits_per_sample() const { return bps_; }
unsigned sample_format() const { return sample_format_; }
unsigned photometric() const { return photometric_; }
bool is_tiled() const { return is_tiled_; }
unsigned tile_width() const { return tile_width_; }
unsigned tile_height() const { return tile_height_; }
unsigned rows_per_strip() const { return rows_per_strip_; }
unsigned planar_config() const { return planar_config_; }
unsigned compression() const { return compression_; }
private:
tiff_reader(const tiff_reader&);
tiff_reader& operator=(const tiff_reader&);
void init();
template <typename ImageData>
void read_generic(std::size_t x,std::size_t y, ImageData & image);
template <typename ImageData>
void read_stripped(std::size_t x,std::size_t y, ImageData & image);
template <typename ImageData>
void read_tiled(std::size_t x,std::size_t y, ImageData & image);
template <typename ImageData>
image_any read_any_gray(std::size_t x, std::size_t y, std::size_t width, std::size_t height);
TIFF* open(std::istream & input);
};
namespace
{
@ -224,622 +128,6 @@ const bool registered2 = register_image_reader("tiff", create_tiff_reader2);
}
template <typename T>
tiff_reader<T>::tiff_reader(std::string const& filename)
:
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
stream_(),
#else
source_(),
stream_(&source_),
#endif
tif_(nullptr),
read_method_(generic),
rows_per_strip_(0),
tile_width_(0),
tile_height_(0),
width_(0),
height_(0),
bps_(0),
sample_format_(SAMPLEFORMAT_UINT),
photometric_(0),
bands_(1),
planar_config_(PLANARCONFIG_CONTIG),
compression_(COMPRESSION_NONE),
has_alpha_(false),
is_tiled_(false)
{
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
boost::optional<mapnik::mapped_region_ptr> memory =
mapnik::mapped_memory_cache::instance().find(filename,true);
if (memory)
{
mapped_region_ = *memory;
stream_.buffer(static_cast<char*>(mapped_region_->get_address()),mapped_region_->get_size());
}
else
{
throw image_reader_exception("could not create file mapping for " + filename);
}
#else
source_.open(filename, std::ios_base::in | std::ios_base::binary);
#endif
if (!stream_) throw image_reader_exception("TIFF reader: cannot open file " + filename);
init();
}
template <typename T>
tiff_reader<T>::tiff_reader(char const* data, std::size_t size)
: source_(data, size),
stream_(&source_),
tif_(nullptr),
read_method_(generic),
rows_per_strip_(0),
tile_width_(0),
tile_height_(0),
width_(0),
height_(0),
bps_(0),
sample_format_(SAMPLEFORMAT_UINT),
photometric_(0),
bands_(1),
planar_config_(PLANARCONFIG_CONTIG),
compression_(COMPRESSION_NONE),
has_alpha_(false),
is_tiled_(false)
{
if (!stream_) throw image_reader_exception("TIFF reader: cannot open image stream ");
init();
}
template <typename T>
void tiff_reader<T>::init()
{
// avoid calling TIFFs global structures
TIFFSetWarningHandler(0);
TIFFSetErrorHandler(0);
TIFF* tif = open(stream_);
if (!tif) throw image_reader_exception("Can't open tiff file");
TIFFGetField(tif,TIFFTAG_BITSPERSAMPLE,&bps_);
TIFFGetField(tif,TIFFTAG_SAMPLEFORMAT,&sample_format_);
TIFFGetField(tif,TIFFTAG_PHOTOMETRIC,&photometric_);
TIFFGetField(tif, TIFFTAG_SAMPLESPERPIXEL, &bands_);
MAPNIK_LOG_DEBUG(tiff_reader) << "bits per sample: " << bps_ ;
MAPNIK_LOG_DEBUG(tiff_reader) << "sample format: " << sample_format_ ;
MAPNIK_LOG_DEBUG(tiff_reader) << "photometric: " << photometric_ ;
MAPNIK_LOG_DEBUG(tiff_reader) << "bands: " << bands_ ;
TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &width_);
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &height_);
TIFFGetField(tif, TIFFTAG_PLANARCONFIG, &planar_config_);
TIFFGetField(tif, TIFFTAG_COMPRESSION, &compression_ );
std::uint16_t orientation;
if (TIFFGetField(tif, TIFFTAG_ORIENTATION, &orientation) == 0)
{
orientation = 1;
}
MAPNIK_LOG_DEBUG(tiff_reader) << "orientation: " << orientation ;
MAPNIK_LOG_DEBUG(tiff_reader) << "planar-config: " << planar_config_ ;
is_tiled_ = TIFFIsTiled(tif);
if (is_tiled_)
{
TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tile_width_);
TIFFGetField(tif, TIFFTAG_TILELENGTH, &tile_height_);
MAPNIK_LOG_DEBUG(tiff_reader) << "tiff is tiled";
read_method_ = tiled;
}
else if (TIFFGetField(tif, TIFFTAG_ROWSPERSTRIP, &rows_per_strip_) != 0)
{
MAPNIK_LOG_DEBUG(tiff_reader) << "tiff is stripped";
read_method_ = stripped;
}
//TIFFTAG_EXTRASAMPLES
uint16 extrasamples = 0;
uint16* sampleinfo = nullptr;
if (TIFFGetField(tif, TIFFTAG_EXTRASAMPLES,
&extrasamples, &sampleinfo))
{
has_alpha_ = true;
if (extrasamples > 0 &&
sampleinfo[0] == EXTRASAMPLE_UNSPECIFIED)
{
throw image_reader_exception("Unspecified provided for extra samples to tiff reader.");
}
}
// Try extracting bounding box from geoTIFF tags
{
uint16 count = 0;
double *pixelscale;
double *tilepoint;
if (TIFFGetField(tif, 33550, &count, &pixelscale) == 1 && count == 3
&& TIFFGetField(tif, 33922 , &count, &tilepoint) == 1 && count == 6)
{
MAPNIK_LOG_DEBUG(tiff_reader) << "PixelScale:" << pixelscale[0] << "," << pixelscale[1] << "," << pixelscale[2] ;
MAPNIK_LOG_DEBUG(tiff_reader) << "TilePoint:" << tilepoint[0] << "," << tilepoint[1] << "," << tilepoint[2] ;
MAPNIK_LOG_DEBUG(tiff_reader) << " " << tilepoint[3] << "," << tilepoint[4] << "," << tilepoint[5] ;
// assuming upper-left
double lox = tilepoint[3];
double loy = tilepoint[4];
double hix = lox + pixelscale[0] * width_;
double hiy = loy - pixelscale[1] * height_;
bbox_.reset(box2d<double>(lox, loy, hix, hiy));
MAPNIK_LOG_DEBUG(tiff_reader) << "Bounding Box:" << *bbox_ ;
}
}
if (!is_tiled_ &&
compression_ == COMPRESSION_NONE &&
planar_config_ == PLANARCONFIG_CONTIG)
{
if (height_ > 128 * 1024 * 1024)
{
std::size_t line_size = (bands_ * width_ * bps_ + 7) / 8;
std::size_t default_strip_height = 8192 / line_size;
if (default_strip_height == 0) default_strip_height = 1;
std::size_t num_strips = height_ / default_strip_height;
if (num_strips > 128 * 1024 * 1024)
{
throw image_reader_exception("Can't allocate tiff");
}
}
}
}
template <typename T>
tiff_reader<T>::~tiff_reader()
{
}
template <typename T>
unsigned tiff_reader<T>::width() const
{
return width_;
}
template <typename T>
unsigned tiff_reader<T>::height() const
{
return height_;
}
template <typename T>
boost::optional<box2d<double> > tiff_reader<T>::bounding_box() const
{
return bbox_;
}
template <typename T>
void tiff_reader<T>::read(unsigned x,unsigned y,image_rgba8& image)
{
if (read_method_==stripped)
{
read_stripped(static_cast<std::size_t>(x),static_cast<std::size_t>(y),image);
}
else if (read_method_==tiled)
{
read_tiled(static_cast<std::size_t>(x),static_cast<std::size_t>(y),image);
}
else
{
read_generic(static_cast<std::size_t>(x),static_cast<std::size_t>(y),image);
}
}
template <typename T>
template <typename ImageData>
image_any tiff_reader<T>::read_any_gray(std::size_t x0, std::size_t y0, std::size_t width, std::size_t height)
{
using image_type = ImageData;
using pixel_type = typename image_type::pixel_type;
if (read_method_ == tiled)
{
image_type data(width, height);
read_tiled<image_type>(x0, y0, data);
return image_any(std::move(data));
}
else if (read_method_ == stripped)
{
image_type data(width, height);
read_stripped<image_type>(x0, y0, data);
return image_any(std::move(data));
}
else
{
TIFF* tif = open(stream_);
if (tif)
{
image_type data(width, height);
std::size_t block_size = rows_per_strip_ > 0 ? rows_per_strip_ : tile_height_ ;
std::size_t start_y = y0 - y0 % block_size;
std::size_t end_y = std::min(y0 + height, height_);
std::size_t start_x = x0;
std::size_t end_x = std::min(x0 + width, width_);
std::size_t element_size = sizeof(pixel_type);
MAPNIK_LOG_DEBUG(tiff_reader) << "SCANLINE SIZE=" << TIFFScanlineSize(tif);
std::size_t size_to_allocate = (TIFFScanlineSize(tif) + element_size - 1)/element_size;
std::unique_ptr<pixel_type[]> const scanline(new pixel_type[size_to_allocate]);
if (planar_config_ == PLANARCONFIG_CONTIG)
{
for (std::size_t y = start_y; y < end_y; ++y)
{
// we have to read all scanlines sequentially from start_y
// to be able to use scanline interface with compressed blocks.
if (-1 != TIFFReadScanline(tif, scanline.get(), y) && (y >= y0))
{
pixel_type * row = data.get_row(y - y0);
if (bands_ == 1)
{
std::transform(scanline.get() + start_x, scanline.get() + end_x, row, [](pixel_type const& p) { return p;});
}
else if (size_to_allocate == bands_ * width_)
{
// bands_ > 1 => packed bands in grayscale image e.g an extra alpha channel.
// Just pick first one for now.
pixel_type * buf = scanline.get() + start_x * bands_;
std::size_t x_index = 0;
for (std::size_t j = 0; j < end_x * bands_; ++j)
{
if (x_index >= width) break;
if (j % bands_ == 0)
{
row[x_index++] = buf[j];
}
}
}
}
}
}
else if (planar_config_ == PLANARCONFIG_SEPARATE)
{
for (std::size_t s = 0 ; s < bands_ ; ++s)
{
for (std::size_t y = start_y; y < end_y; ++y)
{
if (-1 != TIFFReadScanline(tif, scanline.get(), y) && (y >= y0))
{
pixel_type * row = data.get_row(y - y0);
std::transform(scanline.get() + start_x, scanline.get() + end_x, row, [](pixel_type const& p) { return p;});
}
}
}
}
return image_any(std::move(data));
}
}
return image_any();
}
namespace detail {
struct rgb8
{
std::uint8_t r;
std::uint8_t g;
std::uint8_t b;
};
struct rgb8_to_rgba8
{
std::uint32_t operator() (rgb8 const& in) const
{
return ((255 << 24) | (in.r) | (in.g << 8) | (in.b << 16));
}
};
template <typename T>
struct tiff_reader_traits
{
using image_type = T;
using pixel_type = typename image_type::pixel_type;
constexpr static bool reverse = false;
static bool read_tile(TIFF * tif, std::size_t x, std::size_t y, pixel_type* buf, std::size_t tile_width, std::size_t tile_height)
{
std::uint32_t tile_size = TIFFTileSize(tif);
return (TIFFReadEncodedTile(tif, TIFFComputeTile(tif, x, y, 0, 0), buf, tile_size) != -1);
}
static bool read_strip(TIFF * tif, std::size_t y, std::size_t rows_per_strip, std::size_t strip_width, pixel_type * buf)
{
return (TIFFReadEncodedStrip(tif, y/rows_per_strip, buf, -1) != -1);
}
};
// default specialization that expands into RGBA
template <>
struct tiff_reader_traits<image_rgba8>
{
using image_type = image_rgba8;
using pixel_type = std::uint32_t;
constexpr static bool reverse = true;
static bool read_tile(TIFF * tif, std::size_t x0, std::size_t y0, pixel_type* buf, std::size_t tile_width, std::size_t tile_height)
{
return (TIFFReadRGBATile(tif, x0, y0, buf) != 0);
}
static bool read_strip(TIFF * tif, std::size_t y, std::size_t rows_per_strip, std::size_t strip_width, pixel_type * buf)
{
return (TIFFReadRGBAStrip(tif, y, buf) != 0);
}
};
}
template <typename T>
image_any tiff_reader<T>::read(unsigned x, unsigned y, unsigned width, unsigned height)
{
if (width > 10000 || height > 10000)
{
throw image_reader_exception("Can't allocate tiff > 10000x10000");
}
std::size_t x0 = static_cast<std::size_t>(x);
std::size_t y0 = static_cast<std::size_t>(y);
switch (photometric_)
{
case PHOTOMETRIC_MINISBLACK:
case PHOTOMETRIC_MINISWHITE:
{
switch (bps_)
{
case 8:
{
switch (sample_format_)
{
case SAMPLEFORMAT_UINT:
{
return read_any_gray<image_gray8>(x0, y0, width, height);
}
case SAMPLEFORMAT_INT:
{
return read_any_gray<image_gray8s>(x0, y0, width, height);
}
default:
{
throw image_reader_exception("tiff_reader: This sample format is not supported for this bits per sample");
}
}
}
case 16:
{
switch (sample_format_)
{
case SAMPLEFORMAT_UINT:
{
return read_any_gray<image_gray16>(x0, y0, width, height);
}
case SAMPLEFORMAT_INT:
{
return read_any_gray<image_gray16s>(x0, y0, width, height);
}
default:
{
throw image_reader_exception("tiff_reader: This sample format is not supported for this bits per sample");
}
}
}
case 32:
{
switch (sample_format_)
{
case SAMPLEFORMAT_UINT:
{
return read_any_gray<image_gray32>(x0, y0, width, height);
}
case SAMPLEFORMAT_INT:
{
return read_any_gray<image_gray32s>(x0, y0, width, height);
}
case SAMPLEFORMAT_IEEEFP:
{
return read_any_gray<image_gray32f>(x0, y0, width, height);
}
default:
{
throw image_reader_exception("tiff_reader: This sample format is not supported for this bits per sample");
}
}
}
case 64:
{
switch (sample_format_)
{
case SAMPLEFORMAT_UINT:
{
return read_any_gray<image_gray64>(x0, y0, width, height);
}
case SAMPLEFORMAT_INT:
{
return read_any_gray<image_gray64s>(x0, y0, width, height);
}
case SAMPLEFORMAT_IEEEFP:
{
return read_any_gray<image_gray64f>(x0, y0, width, height);
}
default:
{
throw image_reader_exception("tiff_reader: This sample format is not supported for this bits per sample");
}
}
}
}
}
default:
{
//PHOTOMETRIC_PALETTE = 3;
//PHOTOMETRIC_MASK = 4;
//PHOTOMETRIC_SEPARATED = 5;
//PHOTOMETRIC_YCBCR = 6;
//PHOTOMETRIC_CIELAB = 8;
//PHOTOMETRIC_ICCLAB = 9;
//PHOTOMETRIC_ITULAB = 10;
//PHOTOMETRIC_LOGL = 32844;
//PHOTOMETRIC_LOGLUV = 32845;
image_rgba8 data(width,height, true, true);
read(x0, y0, data);
return image_any(std::move(data));
}
}
return image_any();
}
template <typename T>
template <typename ImageData>
void tiff_reader<T>::read_generic(std::size_t, std::size_t, ImageData &)
{
throw image_reader_exception("tiff_reader: TODO - tiff is not stripped or tiled");
}
template <typename T>
template <typename ImageData>
void tiff_reader<T>::read_tiled(std::size_t x0,std::size_t y0, ImageData & image)
{
using pixel_type = typename detail::tiff_reader_traits<ImageData>::pixel_type;
TIFF* tif = open(stream_);
if (tif)
{
std::uint32_t tile_size = TIFFTileSize(tif);
std::unique_ptr<pixel_type[]> tile(new pixel_type[tile_size]);
std::size_t width = image.width();
std::size_t height = image.height();
std::size_t start_y = (y0 / tile_height_) * tile_height_;
std::size_t end_y = ((y0 + height) / tile_height_ + 1) * tile_height_;
std::size_t start_x = (x0 / tile_width_) * tile_width_;
std::size_t end_x = ((x0 + width) / tile_width_ + 1) * tile_width_;
end_y = std::min(end_y, height_);
end_x = std::min(end_x, width_);
bool pick_first_band = (bands_ > 1) && (tile_size / (tile_width_ * tile_height_ * sizeof(pixel_type)) == bands_);
for (std::size_t y = start_y; y < end_y; y += tile_height_)
{
std::size_t ty0 = std::max(y0, y) - y;
std::size_t ty1 = std::min(height + y0, y + tile_height_) - y;
for (std::size_t x = start_x; x < end_x; x += tile_width_)
{
if (!detail::tiff_reader_traits<ImageData>::read_tile(tif, x, y, tile.get(), tile_width_, tile_height_))
{
MAPNIK_LOG_DEBUG(tiff_reader) << "read_tile(...) failed at " << x << "/" << y << " for " << width_ << "/" << height_ << "\n";
break;
}
if (pick_first_band)
{
std::uint32_t size = tile_width_ * tile_height_ * sizeof(pixel_type);
for (std::uint32_t n = 0; n < size; ++n)
{
tile[n] = tile[n * bands_];
}
}
std::size_t tx0 = std::max(x0, x);
std::size_t tx1 = std::min(width + x0, x + tile_width_);
std::size_t row_index = y + ty0 - y0;
if (detail::tiff_reader_traits<ImageData>::reverse)
{
for (std::size_t ty = ty0; ty < ty1; ++ty, ++row_index)
{
// This is in reverse because the TIFFReadRGBATile reads are inverted
image.set_row(row_index, tx0 - x0, tx1 - x0, &tile[(tile_height_ - ty - 1) * tile_width_ + tx0 - x]);
}
}
else
{
for (std::size_t ty = ty0; ty < ty1; ++ty, ++row_index)
{
image.set_row(row_index, tx0 - x0, tx1 - x0, &tile[ty * tile_width_ + tx0 - x]);
}
}
}
}
}
}
template <typename T>
template <typename ImageData>
void tiff_reader<T>::read_stripped(std::size_t x0, std::size_t y0, ImageData & image)
{
using pixel_type = typename detail::tiff_reader_traits<ImageData>::pixel_type;
TIFF* tif = open(stream_);
if (tif)
{
std::uint32_t strip_size = TIFFStripSize(tif);
std::unique_ptr<pixel_type[]> strip(new pixel_type[strip_size]);
std::size_t width = image.width();
std::size_t height = image.height();
std::size_t start_y = (y0 / rows_per_strip_) * rows_per_strip_;
std::size_t end_y = std::min(y0 + height, height_);
std::size_t tx0, tx1, ty0, ty1;
tx0 = x0;
tx1 = std::min(width + x0, width_);
std::size_t row = 0;
bool pick_first_band = (bands_ > 1) && (strip_size / (width_ * rows_per_strip_ * sizeof(pixel_type)) == bands_);
for (std::size_t y = start_y; y < end_y; y += rows_per_strip_)
{
ty0 = std::max(y0, y) - y;
ty1 = std::min(end_y, y + rows_per_strip_) - y;
if (!detail::tiff_reader_traits<ImageData>::read_strip(tif, y, rows_per_strip_, width_, strip.get()))
{
MAPNIK_LOG_DEBUG(tiff_reader) << "TIFFRead(Encoded|RGBA)Strip failed at " << y << " for " << width_ << "/" << height_ << "\n";
break;
}
if (pick_first_band)
{
std::uint32_t size = width_ * rows_per_strip_ * sizeof(pixel_type);
for (std::uint32_t n = 0; n < size; ++n)
{
strip[n] = strip[bands_ * n];
}
}
if (detail::tiff_reader_traits<ImageData>::reverse)
{
std::size_t num_rows = std::min(height_ - y, static_cast<std::size_t>(rows_per_strip_));
for (std::size_t ty = ty0; ty < ty1; ++ty)
{
// This is in reverse because the TIFFReadRGBAStrip reads are inverted
image.set_row(row++, tx0 - x0, tx1 - x0, &strip[(num_rows - ty - 1) * width_ + tx0]);
}
}
else
{
for (std::size_t ty = ty0; ty < ty1; ++ty)
{
image.set_row(row++, tx0 - x0, tx1 - x0, &strip[ty * width_ + tx0]);
}
}
}
}
}
template <typename T>
TIFF* tiff_reader<T>::open(std::istream & input)
{
if (!tif_)
{
tif_ = tiff_ptr(TIFFClientOpen("tiff_input_stream", "rcm",
reinterpret_cast<thandle_t>(&input),
detail::tiff_read_proc,
detail::tiff_write_proc,
detail::tiff_seek_proc,
detail::tiff_close_proc,
detail::tiff_size_proc,
detail::tiff_map_proc,
detail::tiff_unmap_proc), tiff_closer());
}
return tif_.get();
}
} // namespace mapnik

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src/tiff_reader.hpp Normal file
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#pragma once
// mapnik
#include <mapnik/debug.hpp>
#include <mapnik/image_reader.hpp>
#include <mapnik/util/char_array_buffer.hpp>
extern "C"
{
#include <tiffio.h>
}
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
#include <mapnik/warning.hpp>
MAPNIK_DISABLE_WARNING_PUSH
#include <mapnik/warning_ignore.hpp>
#include <boost/interprocess/mapped_region.hpp>
#include <boost/interprocess/streams/bufferstream.hpp>
MAPNIK_DISABLE_WARNING_POP
#include <mapnik/mapped_memory_cache.hpp>
#endif
#include "tiff_reader.hpp"
// stl
#include <memory>
#include <fstream>
#include <algorithm>
namespace mapnik { namespace detail {
MAPNIK_DECL toff_t tiff_seek_proc(thandle_t handle, toff_t off, int whence);
MAPNIK_DECL int tiff_close_proc(thandle_t);
MAPNIK_DECL toff_t tiff_size_proc(thandle_t handle);
MAPNIK_DECL tsize_t tiff_read_proc(thandle_t handle, tdata_t buf, tsize_t size);
MAPNIK_DECL tsize_t tiff_write_proc(thandle_t , tdata_t , tsize_t);
MAPNIK_DECL void tiff_unmap_proc(thandle_t, tdata_t, toff_t);
MAPNIK_DECL int tiff_map_proc(thandle_t, tdata_t* , toff_t*);
template <typename T>
struct tiff_io_traits
{
using input_stream_type = std::istream;
};
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
template <>
struct tiff_io_traits<boost::interprocess::ibufferstream>
{
using input_stream_type = boost::interprocess::ibufferstream;
};
#endif
}
template <typename T>
class tiff_reader : public image_reader
{
using tiff_ptr = std::shared_ptr<TIFF>;
using source_type = T;
using input_stream = typename detail::tiff_io_traits<source_type>::input_stream_type;
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
mapnik::mapped_region_ptr mapped_region_;
#endif
struct tiff_closer
{
void operator() (TIFF * tif)
{
if (tif != 0) TIFFClose(tif);
}
};
private:
source_type source_;
input_stream stream_;
tiff_ptr tif_;
int read_method_;
int rows_per_strip_;
int tile_width_;
int tile_height_;
std::size_t width_;
std::size_t height_;
boost::optional<box2d<double> > bbox_;
unsigned bps_;
unsigned sample_format_;
unsigned photometric_;
unsigned bands_;
unsigned planar_config_;
unsigned compression_;
bool has_alpha_;
bool is_tiled_;
public:
enum TiffType {
generic=1,
stripped,
tiled
};
explicit tiff_reader(std::string const& filename);
tiff_reader(char const* data, std::size_t size);
virtual ~tiff_reader();
unsigned width() const final;
unsigned height() const final;
boost::optional<box2d<double> > bounding_box() const final;
inline bool has_alpha() const final { return has_alpha_; }
void read(unsigned x,unsigned y,image_rgba8& image) final;
image_any read(unsigned x, unsigned y, unsigned width, unsigned height) final;
// methods specific to tiff reader
unsigned bits_per_sample() const { return bps_; }
unsigned sample_format() const { return sample_format_; }
unsigned photometric() const { return photometric_; }
bool is_tiled() const { return is_tiled_; }
unsigned tile_width() const { return tile_width_; }
unsigned tile_height() const { return tile_height_; }
unsigned rows_per_strip() const { return rows_per_strip_; }
unsigned planar_config() const { return planar_config_; }
unsigned compression() const { return compression_; }
private:
tiff_reader(const tiff_reader&);
tiff_reader& operator=(const tiff_reader&);
void init();
template <typename ImageData>
void read_generic(std::size_t x,std::size_t y, ImageData & image);
template <typename ImageData>
void read_stripped(std::size_t x,std::size_t y, ImageData & image);
template <typename ImageData>
void read_tiled(std::size_t x,std::size_t y, ImageData & image);
template <typename ImageData>
image_any read_any_gray(std::size_t x, std::size_t y, std::size_t width, std::size_t height);
TIFF* open(std::istream & input);
};
template <typename T>
tiff_reader<T>::tiff_reader(std::string const& filename)
:
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
stream_(),
#else
source_(),
stream_(&source_),
#endif
tif_(nullptr),
read_method_(generic),
rows_per_strip_(0),
tile_width_(0),
tile_height_(0),
width_(0),
height_(0),
bps_(0),
sample_format_(SAMPLEFORMAT_UINT),
photometric_(0),
bands_(1),
planar_config_(PLANARCONFIG_CONTIG),
compression_(COMPRESSION_NONE),
has_alpha_(false),
is_tiled_(false)
{
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
boost::optional<mapnik::mapped_region_ptr> memory =
mapnik::mapped_memory_cache::instance().find(filename,true);
if (memory)
{
mapped_region_ = *memory;
stream_.buffer(static_cast<char*>(mapped_region_->get_address()),mapped_region_->get_size());
}
else
{
throw image_reader_exception("could not create file mapping for " + filename);
}
#else
source_.open(filename, std::ios_base::in | std::ios_base::binary);
#endif
if (!stream_) throw image_reader_exception("TIFF reader: cannot open file " + filename);
init();
}
template <typename T>
tiff_reader<T>::tiff_reader(char const* data, std::size_t size)
: source_(data, size),
stream_(&source_),
tif_(nullptr),
read_method_(generic),
rows_per_strip_(0),
tile_width_(0),
tile_height_(0),
width_(0),
height_(0),
bps_(0),
sample_format_(SAMPLEFORMAT_UINT),
photometric_(0),
bands_(1),
planar_config_(PLANARCONFIG_CONTIG),
compression_(COMPRESSION_NONE),
has_alpha_(false),
is_tiled_(false)
{
if (!stream_) throw image_reader_exception("TIFF reader: cannot open image stream ");
init();
}
template <typename T>
void tiff_reader<T>::init()
{
// avoid calling TIFFs global structures
TIFFSetWarningHandler(0);
TIFFSetErrorHandler(0);
TIFF* tif = open(stream_);
if (!tif) throw image_reader_exception("Can't open tiff file");
TIFFGetField(tif,TIFFTAG_BITSPERSAMPLE,&bps_);
TIFFGetField(tif,TIFFTAG_SAMPLEFORMAT,&sample_format_);
TIFFGetField(tif,TIFFTAG_PHOTOMETRIC,&photometric_);
TIFFGetField(tif, TIFFTAG_SAMPLESPERPIXEL, &bands_);
MAPNIK_LOG_DEBUG(tiff_reader) << "bits per sample: " << bps_ ;
MAPNIK_LOG_DEBUG(tiff_reader) << "sample format: " << sample_format_ ;
MAPNIK_LOG_DEBUG(tiff_reader) << "photometric: " << photometric_ ;
MAPNIK_LOG_DEBUG(tiff_reader) << "bands: " << bands_ ;
TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &width_);
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &height_);
TIFFGetField(tif, TIFFTAG_PLANARCONFIG, &planar_config_);
TIFFGetField(tif, TIFFTAG_COMPRESSION, &compression_ );
std::uint16_t orientation;
if (TIFFGetField(tif, TIFFTAG_ORIENTATION, &orientation) == 0)
{
orientation = 1;
}
MAPNIK_LOG_DEBUG(tiff_reader) << "orientation: " << orientation ;
MAPNIK_LOG_DEBUG(tiff_reader) << "planar-config: " << planar_config_ ;
is_tiled_ = TIFFIsTiled(tif);
if (is_tiled_)
{
TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tile_width_);
TIFFGetField(tif, TIFFTAG_TILELENGTH, &tile_height_);
MAPNIK_LOG_DEBUG(tiff_reader) << "tiff is tiled";
read_method_ = tiled;
}
else if (TIFFGetField(tif, TIFFTAG_ROWSPERSTRIP, &rows_per_strip_) != 0)
{
MAPNIK_LOG_DEBUG(tiff_reader) << "tiff is stripped";
read_method_ = stripped;
}
//TIFFTAG_EXTRASAMPLES
uint16 extrasamples = 0;
uint16* sampleinfo = nullptr;
if (TIFFGetField(tif, TIFFTAG_EXTRASAMPLES,
&extrasamples, &sampleinfo))
{
has_alpha_ = true;
if (extrasamples > 0 &&
sampleinfo[0] == EXTRASAMPLE_UNSPECIFIED)
{
throw image_reader_exception("Unspecified provided for extra samples to tiff reader.");
}
}
// Try extracting bounding box from geoTIFF tags
{
uint16 count = 0;
double *pixelscale;
double *tilepoint;
if (TIFFGetField(tif, 33550, &count, &pixelscale) == 1 && count == 3
&& TIFFGetField(tif, 33922 , &count, &tilepoint) == 1 && count == 6)
{
MAPNIK_LOG_DEBUG(tiff_reader) << "PixelScale:" << pixelscale[0] << "," << pixelscale[1] << "," << pixelscale[2] ;
MAPNIK_LOG_DEBUG(tiff_reader) << "TilePoint:" << tilepoint[0] << "," << tilepoint[1] << "," << tilepoint[2] ;
MAPNIK_LOG_DEBUG(tiff_reader) << " " << tilepoint[3] << "," << tilepoint[4] << "," << tilepoint[5] ;
// assuming upper-left
double lox = tilepoint[3];
double loy = tilepoint[4];
double hix = lox + pixelscale[0] * width_;
double hiy = loy - pixelscale[1] * height_;
bbox_.reset(box2d<double>(lox, loy, hix, hiy));
MAPNIK_LOG_DEBUG(tiff_reader) << "Bounding Box:" << *bbox_ ;
}
}
if (!is_tiled_ &&
compression_ == COMPRESSION_NONE &&
planar_config_ == PLANARCONFIG_CONTIG)
{
if (height_ > 128 * 1024 * 1024)
{
std::size_t line_size = (bands_ * width_ * bps_ + 7) / 8;
std::size_t default_strip_height = 8192 / line_size;
if (default_strip_height == 0) default_strip_height = 1;
std::size_t num_strips = height_ / default_strip_height;
if (num_strips > 128 * 1024 * 1024)
{
throw image_reader_exception("Can't allocate tiff");
}
}
}
}
template <typename T>
tiff_reader<T>::~tiff_reader()
{
}
template <typename T>
unsigned tiff_reader<T>::width() const
{
return width_;
}
template <typename T>
unsigned tiff_reader<T>::height() const
{
return height_;
}
template <typename T>
boost::optional<box2d<double> > tiff_reader<T>::bounding_box() const
{
return bbox_;
}
template <typename T>
void tiff_reader<T>::read(unsigned x,unsigned y,image_rgba8& image)
{
if (read_method_==stripped)
{
read_stripped(static_cast<std::size_t>(x),static_cast<std::size_t>(y),image);
}
else if (read_method_==tiled)
{
read_tiled(static_cast<std::size_t>(x),static_cast<std::size_t>(y),image);
}
else
{
read_generic(static_cast<std::size_t>(x),static_cast<std::size_t>(y),image);
}
}
template <typename T>
template <typename ImageData>
image_any tiff_reader<T>::read_any_gray(std::size_t x0, std::size_t y0, std::size_t width, std::size_t height)
{
using image_type = ImageData;
using pixel_type = typename image_type::pixel_type;
if (read_method_ == tiled)
{
image_type data(width, height);
read_tiled<image_type>(x0, y0, data);
return image_any(std::move(data));
}
else if (read_method_ == stripped)
{
image_type data(width, height);
read_stripped<image_type>(x0, y0, data);
return image_any(std::move(data));
}
else
{
TIFF* tif = open(stream_);
if (tif)
{
image_type data(width, height);
std::size_t block_size = rows_per_strip_ > 0 ? rows_per_strip_ : tile_height_ ;
std::size_t start_y = y0 - y0 % block_size;
std::size_t end_y = std::min(y0 + height, height_);
std::size_t start_x = x0;
std::size_t end_x = std::min(x0 + width, width_);
std::size_t element_size = sizeof(pixel_type);
MAPNIK_LOG_DEBUG(tiff_reader) << "SCANLINE SIZE=" << TIFFScanlineSize(tif);
std::size_t size_to_allocate = (TIFFScanlineSize(tif) + element_size - 1)/element_size;
std::unique_ptr<pixel_type[]> const scanline(new pixel_type[size_to_allocate]);
if (planar_config_ == PLANARCONFIG_CONTIG)
{
for (std::size_t y = start_y; y < end_y; ++y)
{
// we have to read all scanlines sequentially from start_y
// to be able to use scanline interface with compressed blocks.
if (-1 != TIFFReadScanline(tif, scanline.get(), y) && (y >= y0))
{
pixel_type * row = data.get_row(y - y0);
if (bands_ == 1)
{
std::transform(scanline.get() + start_x, scanline.get() + end_x, row, [](pixel_type const& p) { return p;});
}
else if (size_to_allocate == bands_ * width_)
{
// bands_ > 1 => packed bands in grayscale image e.g an extra alpha channel.
// Just pick first one for now.
pixel_type * buf = scanline.get() + start_x * bands_;
std::size_t x_index = 0;
for (std::size_t j = 0; j < end_x * bands_; ++j)
{
if (x_index >= width) break;
if (j % bands_ == 0)
{
row[x_index++] = buf[j];
}
}
}
}
}
}
else if (planar_config_ == PLANARCONFIG_SEPARATE)
{
for (std::size_t s = 0 ; s < bands_ ; ++s)
{
for (std::size_t y = start_y; y < end_y; ++y)
{
if (-1 != TIFFReadScanline(tif, scanline.get(), y) && (y >= y0))
{
pixel_type * row = data.get_row(y - y0);
std::transform(scanline.get() + start_x, scanline.get() + end_x, row, [](pixel_type const& p) { return p;});
}
}
}
}
return image_any(std::move(data));
}
}
return image_any();
}
template <typename T>
image_any tiff_reader<T>::read(unsigned x, unsigned y, unsigned width, unsigned height)
{
if (width > 10000 || height > 10000)
{
throw image_reader_exception("Can't allocate tiff > 10000x10000");
}
std::size_t x0 = static_cast<std::size_t>(x);
std::size_t y0 = static_cast<std::size_t>(y);
switch (photometric_)
{
case PHOTOMETRIC_MINISBLACK:
case PHOTOMETRIC_MINISWHITE:
{
switch (bps_)
{
case 8:
{
switch (sample_format_)
{
case SAMPLEFORMAT_UINT:
{
return read_any_gray<image_gray8>(x0, y0, width, height);
}
case SAMPLEFORMAT_INT:
{
return read_any_gray<image_gray8s>(x0, y0, width, height);
}
default:
{
throw image_reader_exception("tiff_reader: This sample format is not supported for this bits per sample");
}
}
}
case 16:
{
switch (sample_format_)
{
case SAMPLEFORMAT_UINT:
{
return read_any_gray<image_gray16>(x0, y0, width, height);
}
case SAMPLEFORMAT_INT:
{
return read_any_gray<image_gray16s>(x0, y0, width, height);
}
default:
{
throw image_reader_exception("tiff_reader: This sample format is not supported for this bits per sample");
}
}
}
case 32:
{
switch (sample_format_)
{
case SAMPLEFORMAT_UINT:
{
return read_any_gray<image_gray32>(x0, y0, width, height);
}
case SAMPLEFORMAT_INT:
{
return read_any_gray<image_gray32s>(x0, y0, width, height);
}
case SAMPLEFORMAT_IEEEFP:
{
return read_any_gray<image_gray32f>(x0, y0, width, height);
}
default:
{
throw image_reader_exception("tiff_reader: This sample format is not supported for this bits per sample");
}
}
}
case 64:
{
switch (sample_format_)
{
case SAMPLEFORMAT_UINT:
{
return read_any_gray<image_gray64>(x0, y0, width, height);
}
case SAMPLEFORMAT_INT:
{
return read_any_gray<image_gray64s>(x0, y0, width, height);
}
case SAMPLEFORMAT_IEEEFP:
{
return read_any_gray<image_gray64f>(x0, y0, width, height);
}
default:
{
throw image_reader_exception("tiff_reader: This sample format is not supported for this bits per sample");
}
}
}
}
}
default:
{
//PHOTOMETRIC_PALETTE = 3;
//PHOTOMETRIC_MASK = 4;
//PHOTOMETRIC_SEPARATED = 5;
//PHOTOMETRIC_YCBCR = 6;
//PHOTOMETRIC_CIELAB = 8;
//PHOTOMETRIC_ICCLAB = 9;
//PHOTOMETRIC_ITULAB = 10;
//PHOTOMETRIC_LOGL = 32844;
//PHOTOMETRIC_LOGLUV = 32845;
image_rgba8 data(width,height, true, true);
read(x0, y0, data);
return image_any(std::move(data));
}
}
return image_any();
}
namespace detail {
struct rgb8
{
std::uint8_t r;
std::uint8_t g;
std::uint8_t b;
};
struct rgb8_to_rgba8
{
std::uint32_t operator() (rgb8 const& in) const
{
return ((255 << 24) | (in.r) | (in.g << 8) | (in.b << 16));
}
};
template <typename T>
struct tiff_reader_traits
{
using image_type = T;
using pixel_type = typename image_type::pixel_type;
constexpr static bool reverse = false;
static bool read_tile(TIFF * tif, std::size_t x, std::size_t y, pixel_type* buf, std::size_t tile_width, std::size_t tile_height)
{
std::uint32_t tile_size = TIFFTileSize(tif);
return (TIFFReadEncodedTile(tif, TIFFComputeTile(tif, x, y, 0, 0), buf, tile_size) != -1);
}
static bool read_strip(TIFF * tif, std::size_t y, std::size_t rows_per_strip, std::size_t strip_width, pixel_type * buf)
{
return (TIFFReadEncodedStrip(tif, y/rows_per_strip, buf, -1) != -1);
}
};
// default specialization that expands into RGBA
template <>
struct tiff_reader_traits<image_rgba8>
{
using image_type = image_rgba8;
using pixel_type = std::uint32_t;
constexpr static bool reverse = true;
static bool read_tile(TIFF * tif, std::size_t x0, std::size_t y0, pixel_type* buf, std::size_t tile_width, std::size_t tile_height)
{
return (TIFFReadRGBATile(tif, x0, y0, buf) != 0);
}
static bool read_strip(TIFF * tif, std::size_t y, std::size_t rows_per_strip, std::size_t strip_width, pixel_type * buf)
{
return (TIFFReadRGBAStrip(tif, y, buf) != 0);
}
};
}
template <typename T>
template <typename ImageData>
void tiff_reader<T>::read_generic(std::size_t, std::size_t, ImageData &)
{
throw image_reader_exception("tiff_reader: TODO - tiff is not stripped or tiled");
}
template <typename T>
template <typename ImageData>
void tiff_reader<T>::read_tiled(std::size_t x0,std::size_t y0, ImageData & image)
{
using pixel_type = typename detail::tiff_reader_traits<ImageData>::pixel_type;
TIFF* tif = open(stream_);
if (tif)
{
std::uint32_t tile_size = TIFFTileSize(tif);
std::unique_ptr<pixel_type[]> tile(new pixel_type[tile_size]);
std::size_t width = image.width();
std::size_t height = image.height();
std::size_t start_y = (y0 / tile_height_) * tile_height_;
std::size_t end_y = ((y0 + height) / tile_height_ + 1) * tile_height_;
std::size_t start_x = (x0 / tile_width_) * tile_width_;
std::size_t end_x = ((x0 + width) / tile_width_ + 1) * tile_width_;
end_y = std::min(end_y, height_);
end_x = std::min(end_x, width_);
bool pick_first_band = (bands_ > 1) && (tile_size / (tile_width_ * tile_height_ * sizeof(pixel_type)) == bands_);
for (std::size_t y = start_y; y < end_y; y += tile_height_)
{
std::size_t ty0 = std::max(y0, y) - y;
std::size_t ty1 = std::min(height + y0, y + tile_height_) - y;
for (std::size_t x = start_x; x < end_x; x += tile_width_)
{
if (!detail::tiff_reader_traits<ImageData>::read_tile(tif, x, y, tile.get(), tile_width_, tile_height_))
{
MAPNIK_LOG_DEBUG(tiff_reader) << "read_tile(...) failed at " << x << "/" << y << " for " << width_ << "/" << height_ << "\n";
break;
}
if (pick_first_band)
{
std::uint32_t size = tile_width_ * tile_height_ * sizeof(pixel_type);
for (std::uint32_t n = 0; n < size; ++n)
{
tile[n] = tile[n * bands_];
}
}
std::size_t tx0 = std::max(x0, x);
std::size_t tx1 = std::min(width + x0, x + tile_width_);
std::size_t row_index = y + ty0 - y0;
if (detail::tiff_reader_traits<ImageData>::reverse)
{
for (std::size_t ty = ty0; ty < ty1; ++ty, ++row_index)
{
// This is in reverse because the TIFFReadRGBATile reads are inverted
image.set_row(row_index, tx0 - x0, tx1 - x0, &tile[(tile_height_ - ty - 1) * tile_width_ + tx0 - x]);
}
}
else
{
for (std::size_t ty = ty0; ty < ty1; ++ty, ++row_index)
{
image.set_row(row_index, tx0 - x0, tx1 - x0, &tile[ty * tile_width_ + tx0 - x]);
}
}
}
}
}
}
template <typename T>
template <typename ImageData>
void tiff_reader<T>::read_stripped(std::size_t x0, std::size_t y0, ImageData & image)
{
using pixel_type = typename detail::tiff_reader_traits<ImageData>::pixel_type;
TIFF* tif = open(stream_);
if (tif)
{
std::uint32_t strip_size = TIFFStripSize(tif);
std::unique_ptr<pixel_type[]> strip(new pixel_type[strip_size]);
std::size_t width = image.width();
std::size_t height = image.height();
std::size_t start_y = (y0 / rows_per_strip_) * rows_per_strip_;
std::size_t end_y = std::min(y0 + height, height_);
std::size_t tx0, tx1, ty0, ty1;
tx0 = x0;
tx1 = std::min(width + x0, width_);
std::size_t row = 0;
bool pick_first_band = (bands_ > 1) && (strip_size / (width_ * rows_per_strip_ * sizeof(pixel_type)) == bands_);
for (std::size_t y = start_y; y < end_y; y += rows_per_strip_)
{
ty0 = std::max(y0, y) - y;
ty1 = std::min(end_y, y + rows_per_strip_) - y;
if (!detail::tiff_reader_traits<ImageData>::read_strip(tif, y, rows_per_strip_, width_, strip.get()))
{
MAPNIK_LOG_DEBUG(tiff_reader) << "TIFFRead(Encoded|RGBA)Strip failed at " << y << " for " << width_ << "/" << height_ << "\n";
break;
}
if (pick_first_band)
{
std::uint32_t size = width_ * rows_per_strip_ * sizeof(pixel_type);
for (std::uint32_t n = 0; n < size; ++n)
{
strip[n] = strip[bands_ * n];
}
}
if (detail::tiff_reader_traits<ImageData>::reverse)
{
std::size_t num_rows = std::min(height_ - y, static_cast<std::size_t>(rows_per_strip_));
for (std::size_t ty = ty0; ty < ty1; ++ty)
{
// This is in reverse because the TIFFReadRGBAStrip reads are inverted
image.set_row(row++, tx0 - x0, tx1 - x0, &strip[(num_rows - ty - 1) * width_ + tx0]);
}
}
else
{
for (std::size_t ty = ty0; ty < ty1; ++ty)
{
image.set_row(row++, tx0 - x0, tx1 - x0, &strip[ty * width_ + tx0]);
}
}
}
}
}
template <typename T>
TIFF* tiff_reader<T>::open(std::istream & input)
{
if (!tif_)
{
tif_ = tiff_ptr(TIFFClientOpen("tiff_input_stream", "rcm",
reinterpret_cast<thandle_t>(&input),
detail::tiff_read_proc,
detail::tiff_write_proc,
detail::tiff_seek_proc,
detail::tiff_close_proc,
detail::tiff_size_proc,
detail::tiff_map_proc,
detail::tiff_unmap_proc), tiff_closer());
}
return tif_.get();
}
}

4
test/unit/imaging/tiff_io.cpp
View file

@ -1,7 +1,7 @@
// disabled on windows due to https://github.com/mapnik/mapnik/issues/2838
// TODO - get to the bottom of why including `tiff_reader.cpp` breaks windows
// or re-write image_readers to allow `#include tiff_reader.hpp`
#if !defined(_MSC_VER) && defined(HAVE_TIFF)
#ifdef HAVE_TIFF
#include "catch.hpp"
@ -12,7 +12,7 @@
#include <mapnik/util/file_io.hpp>
#include <mapnik/util/fs.hpp>
#include <boost/interprocess/streams/bufferstream.hpp>
#include "../../../src/tiff_reader.cpp"
#include "../../../src/tiff_reader.hpp"
#if defined(MAPNIK_MEMORY_MAPPED_FILE)
using source_type = boost::interprocess::ibufferstream;