Todo List

File io_png.c

handle lossless 16bit data

add a test suite

internally handle RGB/gray conversion in read_png_raw()

handle deinterlacing as a libpng transform function

Member read_png_raw (const char *fname, size_t *nx, size_t *ny, size_t *nc, int transform, int dtype)

don't loose 16bit info

Member read_png_u8 (const char *fname, size_t *nx, size_t *ny, size_t *nc)

don't downscale 16bit images.

Member write_png_f32 (const char *fname, const float *data, size_t nx, size_t ny, size_t nc)

handle 16bit images and flexible min/max

Member write_png_raw (const char *fname, const void *data, size_t nx, size_t ny, size_t nc, int dtype)

handle 16bit