/*************************************************************************/ /* image.h */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /*************************************************************************/ #ifndef IMAGE_H #define IMAGE_H #include "core/color.h" #include "core/math/rect2.h" #include "core/resource.h" /** * @author Juan Linietsky <reduzio@gmail.com> * * Image storage class. This is used to store an image in user memory, as well as * providing some basic methods for image manipulation. * Images can be loaded from a file, or registered into the Render object as textures. */ class Image; typedef Error (*SavePNGFunc)(const String &p_path, const Ref<Image> &p_img); typedef Vector<uint8_t> (*SavePNGBufferFunc)(const Ref<Image> &p_img); typedef Ref<Image> (*ImageMemLoadFunc)(const uint8_t *p_png, int p_size); typedef Error (*SaveEXRFunc)(const String &p_path, const Ref<Image> &p_img, bool p_grayscale); class Image : public Resource { GDCLASS(Image, Resource); public: static SavePNGFunc save_png_func; static SaveEXRFunc save_exr_func; static SavePNGBufferFunc save_png_buffer_func; enum { MAX_WIDTH = (1 << 24), // force a limit somehow MAX_HEIGHT = (1 << 24), // force a limit somehow MAX_PIXELS = 268435456 }; enum Format { FORMAT_L8, //luminance FORMAT_LA8, //luminance-alpha FORMAT_R8, FORMAT_RG8, FORMAT_RGB8, FORMAT_RGBA8, FORMAT_RGBA4444, FORMAT_RGB565, FORMAT_RF, //float FORMAT_RGF, FORMAT_RGBF, FORMAT_RGBAF, FORMAT_RH, //half float FORMAT_RGH, FORMAT_RGBH, FORMAT_RGBAH, FORMAT_RGBE9995, FORMAT_DXT1, //s3tc bc1 FORMAT_DXT3, //bc2 FORMAT_DXT5, //bc3 FORMAT_RGTC_R, FORMAT_RGTC_RG, FORMAT_BPTC_RGBA, //btpc bc7 FORMAT_BPTC_RGBF, //float bc6h FORMAT_BPTC_RGBFU, //unsigned float bc6hu FORMAT_PVRTC2, //pvrtc FORMAT_PVRTC2A, FORMAT_PVRTC4, FORMAT_PVRTC4A, FORMAT_ETC, //etc1 FORMAT_ETC2_R11, //etc2 FORMAT_ETC2_R11S, //signed, NOT srgb. FORMAT_ETC2_RG11, FORMAT_ETC2_RG11S, FORMAT_ETC2_RGB8, FORMAT_ETC2_RGBA8, FORMAT_ETC2_RGB8A1, FORMAT_ETC2_RA_AS_RG, //used to make basis universal happy FORMAT_DXT5_RA_AS_RG, //used to make basis universal happy FORMAT_MAX }; static const char *format_names[FORMAT_MAX]; enum Interpolation { INTERPOLATE_NEAREST, INTERPOLATE_BILINEAR, INTERPOLATE_CUBIC, INTERPOLATE_TRILINEAR, INTERPOLATE_LANCZOS, /* INTERPOLATE_TRICUBIC, */ /* INTERPOLATE GAUSS */ }; //this is used for compression enum UsedChannels { USED_CHANNELS_L, USED_CHANNELS_LA, USED_CHANNELS_R, USED_CHANNELS_RG, USED_CHANNELS_RGB, USED_CHANNELS_RGBA, }; //some functions provided by something else static ImageMemLoadFunc _png_mem_loader_func; static ImageMemLoadFunc _jpg_mem_loader_func; static ImageMemLoadFunc _webp_mem_loader_func; static void (*_image_compress_bc_func)(Image *, float, UsedChannels p_channels); static void (*_image_compress_bptc_func)(Image *, float p_lossy_quality, UsedChannels p_channels); static void (*_image_compress_pvrtc2_func)(Image *); static void (*_image_compress_pvrtc4_func)(Image *); static void (*_image_compress_etc1_func)(Image *, float); static void (*_image_compress_etc2_func)(Image *, float, UsedChannels p_channels); static void (*_image_decompress_pvrtc)(Image *); static void (*_image_decompress_bc)(Image *); static void (*_image_decompress_bptc)(Image *); static void (*_image_decompress_etc1)(Image *); static void (*_image_decompress_etc2)(Image *); static Vector<uint8_t> (*lossy_packer)(const Ref<Image> &p_image, float p_quality); static Ref<Image> (*lossy_unpacker)(const Vector<uint8_t> &p_buffer); static Vector<uint8_t> (*lossless_packer)(const Ref<Image> &p_image); static Ref<Image> (*lossless_unpacker)(const Vector<uint8_t> &p_buffer); static Vector<uint8_t> (*basis_universal_packer)(const Ref<Image> &p_image, UsedChannels p_channels); static Ref<Image> (*basis_universal_unpacker)(const Vector<uint8_t> &p_buffer); _FORCE_INLINE_ Color _get_color_at_ofs(const uint8_t *ptr, uint32_t ofs) const; _FORCE_INLINE_ void _set_color_at_ofs(uint8_t *ptr, uint32_t ofs, const Color &p_color); protected: static void _bind_methods(); private: void _create_empty(int p_width, int p_height, bool p_use_mipmaps, Format p_format) { create(p_width, p_height, p_use_mipmaps, p_format); } void _create_from_data(int p_width, int p_height, bool p_use_mipmaps, Format p_format, const Vector<uint8_t> &p_data) { create(p_width, p_height, p_use_mipmaps, p_format, p_data); } Format format; Vector<uint8_t> data; int width, height; bool mipmaps; void _copy_internals_from(const Image &p_image) { format = p_image.format; width = p_image.width; height = p_image.height; mipmaps = p_image.mipmaps; data = p_image.data; } _FORCE_INLINE_ void _get_mipmap_offset_and_size(int p_mipmap, int &r_offset, int &r_width, int &r_height) const; //get where the mipmap begins in data static int _get_dst_image_size(int p_width, int p_height, Format p_format, int &r_mipmaps, int p_mipmaps = -1, int *r_mm_width = NULL, int *r_mm_height = NULL); bool _can_modify(Format p_format) const; _FORCE_INLINE_ void _put_pixelb(int p_x, int p_y, uint32_t p_pixelsize, uint8_t *p_data, const uint8_t *p_pixel); _FORCE_INLINE_ void _get_pixelb(int p_x, int p_y, uint32_t p_pixelsize, const uint8_t *p_data, uint8_t *p_pixel); void _set_data(const Dictionary &p_data); Dictionary _get_data() const; Error _load_from_buffer(const Vector<uint8_t> &p_array, ImageMemLoadFunc p_loader); static void average_4_uint8(uint8_t &p_out, const uint8_t &p_a, const uint8_t &p_b, const uint8_t &p_c, const uint8_t &p_d); static void average_4_float(float &p_out, const float &p_a, const float &p_b, const float &p_c, const float &p_d); static void average_4_half(uint16_t &p_out, const uint16_t &p_a, const uint16_t &p_b, const uint16_t &p_c, const uint16_t &p_d); static void average_4_rgbe9995(uint32_t &p_out, const uint32_t &p_a, const uint32_t &p_b, const uint32_t &p_c, const uint32_t &p_d); static void renormalize_uint8(uint8_t *p_rgb); static void renormalize_float(float *p_rgb); static void renormalize_half(uint16_t *p_rgb); static void renormalize_rgbe9995(uint32_t *p_rgb); public: int get_width() const; ///< Get image width int get_height() const; ///< Get image height Vector2 get_size() const; bool has_mipmaps() const; int get_mipmap_count() const; /** * Convert the image to another format, conversion only to raw byte format */ void convert(Format p_new_format); /** * Get the current image format. */ Format get_format() const; int get_mipmap_byte_size(int p_mipmap) const; //get where the mipmap begins in data int get_mipmap_offset(int p_mipmap) const; //get where the mipmap begins in data void get_mipmap_offset_and_size(int p_mipmap, int &r_ofs, int &r_size) const; //get where the mipmap begins in data void get_mipmap_offset_size_and_dimensions(int p_mipmap, int &r_ofs, int &r_size, int &w, int &h) const; //get where the mipmap begins in data /** * Resize the image, using the preferred interpolation method. */ void resize_to_po2(bool p_square = false); void resize(int p_width, int p_height, Interpolation p_interpolation = INTERPOLATE_BILINEAR); void shrink_x2(); void expand_x2_hq2x(); bool is_size_po2() const; /** * Crop the image to a specific size, if larger, then the image is filled by black */ void crop_from_point(int p_x, int p_y, int p_width, int p_height); void crop(int p_width, int p_height); void flip_x(); void flip_y(); /** * Generate a mipmap to an image (creates an image 1/4 the size, with averaging of 4->1) */ Error generate_mipmaps(bool p_renormalize = false); enum RoughnessChannel { ROUGHNESS_CHANNEL_R, ROUGHNESS_CHANNEL_G, ROUGHNESS_CHANNEL_B, ROUGHNESS_CHANNEL_A, ROUGHNESS_CHANNEL_L, }; Error generate_mipmap_roughness(RoughnessChannel p_roughness_channel, const Ref<Image> &p_normal_map); void clear_mipmaps(); void normalize(); //for normal maps /** * Create a new image of a given size and format. Current image will be lost */ void create(int p_width, int p_height, bool p_use_mipmaps, Format p_format); void create(int p_width, int p_height, bool p_use_mipmaps, Format p_format, const Vector<uint8_t> &p_data); void create(const char **p_xpm); /** * returns true when the image is empty (0,0) in size */ bool empty() const; Vector<uint8_t> get_data() const; Error load(const String &p_path); Error save_png(const String &p_path) const; Vector<uint8_t> save_png_to_buffer() const; Error save_exr(const String &p_path, bool p_grayscale) const; /** * create an empty image */ Image(); /** * create an empty image of a specific size and format */ Image(int p_width, int p_height, bool p_use_mipmaps, Format p_format); /** * import an image of a specific size and format from a pointer */ Image(int p_width, int p_height, bool p_mipmaps, Format p_format, const Vector<uint8_t> &p_data); enum AlphaMode { ALPHA_NONE, ALPHA_BIT, ALPHA_BLEND }; AlphaMode detect_alpha() const; bool is_invisible() const; static int get_format_pixel_size(Format p_format); static int get_format_pixel_rshift(Format p_format); static int get_format_block_size(Format p_format); static void get_format_min_pixel_size(Format p_format, int &r_w, int &r_h); static int get_image_data_size(int p_width, int p_height, Format p_format, bool p_mipmaps = false); static int get_image_required_mipmaps(int p_width, int p_height, Format p_format); static Size2i get_image_mipmap_size(int p_width, int p_height, Format p_format, int p_mipmap); static int get_image_mipmap_offset(int p_width, int p_height, Format p_format, int p_mipmap); static int get_image_mipmap_offset_and_dimensions(int p_width, int p_height, Format p_format, int p_mipmap, int &r_w, int &r_h); enum CompressMode { COMPRESS_S3TC, COMPRESS_PVRTC2, COMPRESS_PVRTC4, COMPRESS_ETC, COMPRESS_ETC2, COMPRESS_BPTC }; enum CompressSource { COMPRESS_SOURCE_GENERIC, COMPRESS_SOURCE_SRGB, COMPRESS_SOURCE_NORMAL }; Error compress(CompressMode p_mode, CompressSource p_source = COMPRESS_SOURCE_GENERIC, float p_lossy_quality = 0.7); Error compress_from_channels(CompressMode p_mode, UsedChannels p_channels, float p_lossy_quality = 0.7); Error decompress(); bool is_compressed() const; void fix_alpha_edges(); void premultiply_alpha(); void srgb_to_linear(); void normalmap_to_xy(); Ref<Image> rgbe_to_srgb(); Ref<Image> get_image_from_mipmap(int p_mipamp) const; void bumpmap_to_normalmap(float bump_scale = 1.0); void blit_rect(const Ref<Image> &p_src, const Rect2 &p_src_rect, const Point2 &p_dest); void blit_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, const Rect2 &p_src_rect, const Point2 &p_dest); void blend_rect(const Ref<Image> &p_src, const Rect2 &p_src_rect, const Point2 &p_dest); void blend_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, const Rect2 &p_src_rect, const Point2 &p_dest); void fill(const Color &c); Rect2 get_used_rect() const; Ref<Image> get_rect(const Rect2 &p_area) const; static void set_compress_bc_func(void (*p_compress_func)(Image *, float, UsedChannels)); static void set_compress_bptc_func(void (*p_compress_func)(Image *, float, UsedChannels)); static String get_format_name(Format p_format); Error load_png_from_buffer(const Vector<uint8_t> &p_array); Error load_jpg_from_buffer(const Vector<uint8_t> &p_array); Error load_webp_from_buffer(const Vector<uint8_t> &p_array); void convert_rg_to_ra_rgba8(); void convert_ra_rgba8_to_rg(); Image(const uint8_t *p_mem_png_jpg, int p_len = -1); Image(const char **p_xpm); virtual Ref<Resource> duplicate(bool p_subresources = false) const; UsedChannels detect_used_channels(CompressSource p_source = COMPRESS_SOURCE_GENERIC); void optimize_channels(); Color get_pixelv(const Point2 &p_src) const; Color get_pixel(int p_x, int p_y) const; void set_pixelv(const Point2 &p_dst, const Color &p_color); void set_pixel(int p_x, int p_y, const Color &p_color); void copy_internals_from(const Ref<Image> &p_image) { ERR_FAIL_COND_MSG(p_image.is_null(), "It's not a reference to a valid Image object."); format = p_image->format; width = p_image->width; height = p_image->height; mipmaps = p_image->mipmaps; data = p_image->data; } ~Image(); }; VARIANT_ENUM_CAST(Image::Format) VARIANT_ENUM_CAST(Image::Interpolation) VARIANT_ENUM_CAST(Image::CompressMode) VARIANT_ENUM_CAST(Image::CompressSource) VARIANT_ENUM_CAST(Image::UsedChannels) VARIANT_ENUM_CAST(Image::AlphaMode) VARIANT_ENUM_CAST(Image::RoughnessChannel) #endif