\n-
\n+
\n
\n-
\n+
\n
\n-
\n+
\n
\n
\n
\n
\n
\n
\n
\n@@ -73,33 +73,198 @@\n
\n
\n
\n
\n
\n
\n
\n-
\n-
\n-
34#include "loaders/SILLYTGAImageContext.h" \n-
\n-
36#ifndef SILLY_OPT_INLINE \n-
\n-
38#include "loaders/SILLYTGAImageContext.icpp" \n-
\n-
\n-
\n-
\n-
\n-
\n-
\n-
\n-
\n-
\n-
\n+
\n+
\n+
\n+
35#include "loaders/SILLYPNGImageLoader.h" \n+
\n+
37#ifndef SILLY_OPT_INLINE \n+
\n+
39#include "loaders/SILLYPNGImageLoader.icpp" \n+
\n+
\n+
\n+
43#include "loaders/SILLYPNGImageContext.h" \n+
\n+
\n+
\n+
\n+
48void PNG_read_function(png_structp png_ptr, png_bytep data, png_size_t length)
\n+
\n+
50 PNGImageContext* png =
reinterpret_cast<PNGImageContext*
>(png_get_io_ptr(png_ptr));
\n+
51 int readed = png->read(data, length);
\n+
52 if (readed != (
int)length)
\n+
\n+
54 png_error(png_ptr,
"PNG_read_function error");
\n+
\n+
\n+
\n+
58void PNG_warning_function(png_structp png_ptr,
\n+
59 png_const_charp error)
\n+
\n+
\n+
\n+
\n+
64void PNG_error_function(png_structp png_ptr,
\n+
65 png_const_charp error)
\n+
\n+
\n+
\n+
\n+
70#if PNG_LIBPNG_VER_MAJOR >= 1 && PNG_LIBPNG_VER_MINOR >= 4 \n+
71 memcpy(buf, png_jmpbuf((png_ptr)),
sizeof(jmp_buf));
\n+
\n+
73 memcpy(buf, png_ptr->jmpbuf,
sizeof(jmp_buf));
\n+
\n+
\n+
\n+
\n+
\n+
79PNGImageLoader::PNGImageLoader()
\n+
80 : ImageLoader(
"PNG Image Loader based on libpng")
\n+
\n+
\n+
83PNGImageLoader::~PNGImageLoader()
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
97 png->d_png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
\n+
98 if (png->d_png_ptr == 0)
\n+
\n+
\n+
\n+
\n+
103 png->d_info_ptr = png_create_info_struct(png->d_png_ptr);
\n+
104 if (png->d_info_ptr == 0)
\n+
\n+
\n+
\n+
\n+
109 if (setjmp(png_jmpbuf(png->d_png_ptr)))
\n+
\n+
\n+
\n+
\n+
114 png_set_error_fn(png->d_png_ptr, 0, PNG_error_function, PNG_warning_function);
\n+
115 png_set_read_fn(png->d_png_ptr, png, PNG_read_function);
\n+
\n+
\n+
\n+
\n+
\n+
121 int png_transform = PNG_TRANSFORM_STRIP_16 | PNG_TRANSFORM_EXPAND;
\n+
\n+
123 png_read_png(png->d_png_ptr, png->d_info_ptr, png_transform, 0);
\n+
\n+
125 png->d_bit_depth = png_get_bit_depth(png->d_png_ptr, png->d_info_ptr);
\n+
126 png->d_num_channels = png_get_channels(png->d_png_ptr, png->d_info_ptr);
\n+
\n+
128 if (png->d_bit_depth == 8)
\n+
\n+
130 if (png->d_num_channels == 4)
\n+
\n+
132 formatSource = PF_RGBA;
\n+
\n+
134 else if (png->d_num_channels == 3)
\n+
\n+
136 formatSource = PF_RGB;
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
\n+
163 size_t width = png->getWidth();
\n+
164 size_t height = png->getHeight();
\n+
165 png_bytepp row_pointers = png_get_rows(png->d_png_ptr, png->d_info_ptr);
\n+
166 if (png->d_bit_depth == 8)
\n+
\n+
\n+
169 if (png->d_num_channels == 4)
\n+
\n+
171 for (
size_t j = 0 ; j < height ; ++j)
\n+
\n+
173 for(
size_t i = 0 ; i < width ; ++i)
\n+
\n+
175 size_t pixel_offset = 4 * i;
\n+
176 red = *(row_pointers[j] + pixel_offset);
\n+
177 green = *(row_pointers[j] + pixel_offset + 1);
\n+
178 blue = *(row_pointers[j] + pixel_offset + 2);
\n+
179 alpha = *(row_pointers[j] + pixel_offset + 3);
\n+
\n+
\n+
\n+
\n+
184 else if (png->d_num_channels == 3)
\n+
\n+
\n+
187 for (
size_t j = 0 ; j < height ; ++j)
\n+
\n+
189 for(
size_t i = 0 ; i < width ; ++i)
\n+
\n+
191 size_t pixel_offset = 3 * i;
\n+
192 red = *(row_pointers[j] + pixel_offset);
\n+
193 green = *(row_pointers[j] + pixel_offset + 1);
\n+
194 blue = *(row_pointers[j] + pixel_offset + 2);
\n+
\n+
\n+
\n+
\n+
\n+
\n+
201 if (origin == PO_BOTTOM_LEFT)
\n+
\n+
\n+
\n+
\n+
\n+
\n
Simple Image Loading LibrarY namespace.
\n+
PixelFormat
List all pixel format supported.
\n+
PixelOrigin
List all pixel origin supported.
\n+
Image Context for PNG Image Loader.
\n+
This is an abstract class used to provide data to the loader.
\n+
Store the data needed by an ImageLoader object during the parsing of an image.
\n+
void setNextPixel(byte red, byte green, byte bleu, byte alpha)
Set the next pixel of the image.
\n+
bool flipVertically()
Flip pixel ordering.
\n
![\"doxygen\"/](\"doxygen.svg\")