/**************************************************************************/ /* image.h */ /**************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /**************************************************************************/ /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ /* */ /* 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/io/resource.h" #include "core/math/color.h" #include "core/math/rect2.h" /** * 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 &p_img); typedef Vector (*SavePNGBufferFunc)(const Ref &p_img); typedef Error (*SaveJPGFunc)(const String &p_path, const Ref &p_img, float p_quality); typedef Vector (*SaveJPGBufferFunc)(const Ref &p_img, float p_quality); typedef Ref (*ImageMemLoadFunc)(const uint8_t *p_png, int p_size); typedef Ref (*ScalableImageMemLoadFunc)(const uint8_t *p_data, int p_size, float p_scale); typedef Error (*SaveWebPFunc)(const String &p_path, const Ref &p_img, const bool p_lossy, const float p_quality); typedef Vector (*SaveWebPBufferFunc)(const Ref &p_img, const bool p_lossy, const float p_quality); typedef Error (*SaveEXRFunc)(const String &p_path, const Ref &p_img, bool p_grayscale); typedef Vector (*SaveEXRBufferFunc)(const Ref &p_img, bool p_grayscale); class Image : public Resource { GDCLASS(Image, Resource); public: static SavePNGFunc save_png_func; static SaveJPGFunc save_jpg_func; static SaveEXRFunc save_exr_func; static SavePNGBufferFunc save_png_buffer_func; static SaveEXRBufferFunc save_exr_buffer_func; static SaveJPGBufferFunc save_jpg_buffer_func; static SaveWebPFunc save_webp_func; static SaveWebPBufferFunc save_webp_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_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_ASTC_4x4, FORMAT_ASTC_4x4_HDR, FORMAT_ASTC_8x8, FORMAT_ASTC_8x8_HDR, 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 enum ASTCFormat { ASTC_FORMAT_4x4, ASTC_FORMAT_8x8, }; static ImageMemLoadFunc _png_mem_loader_func; static ImageMemLoadFunc _png_mem_unpacker_func; static ImageMemLoadFunc _jpg_mem_loader_func; static ImageMemLoadFunc _webp_mem_loader_func; static ImageMemLoadFunc _tga_mem_loader_func; static ImageMemLoadFunc _bmp_mem_loader_func; static ScalableImageMemLoadFunc _svg_scalable_mem_loader_func; static ImageMemLoadFunc _ktx_mem_loader_func; static void (*_image_compress_bc_func)(Image *, UsedChannels p_channels); static void (*_image_compress_bptc_func)(Image *, UsedChannels p_channels); static void (*_image_compress_etc1_func)(Image *); static void (*_image_compress_etc2_func)(Image *, UsedChannels p_channels); static void (*_image_compress_astc_func)(Image *, ASTCFormat p_format); 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 void (*_image_decompress_astc)(Image *); static Vector (*webp_lossy_packer)(const Ref &p_image, float p_quality); static Vector (*webp_lossless_packer)(const Ref &p_image); static Ref (*webp_unpacker)(const Vector &p_buffer); static Vector (*png_packer)(const Ref &p_image); static Ref (*png_unpacker)(const Vector &p_buffer); static Vector (*basis_universal_packer)(const Ref &p_image, UsedChannels p_channels); static Ref (*basis_universal_unpacker)(const Vector &p_buffer); static Ref (*basis_universal_unpacker_ptr)(const uint8_t *p_data, int p_size); _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: Format format = FORMAT_L8; Vector data; int width = 0; int height = 0; bool mipmaps = false; 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 = nullptr, int *r_mm_height = nullptr); bool _can_modify(Format p_format) const; _FORCE_INLINE_ void _get_clipped_src_and_dest_rects(const Ref &p_src, const Rect2i &p_src_rect, const Point2i &p_dest, Rect2i &r_clipped_src_rect, Rect2i &r_clipped_dest_rect) const; _FORCE_INLINE_ void _put_pixelb(int p_x, int p_y, uint32_t p_pixel_size, uint8_t *p_data, const uint8_t *p_pixel); _FORCE_INLINE_ void _get_pixelb(int p_x, int p_y, uint32_t p_pixel_size, const uint8_t *p_data, uint8_t *p_pixel); _FORCE_INLINE_ void _repeat_pixel_over_subsequent_memory(uint8_t *p_pixel, int p_pixel_size, int p_count); void _set_data(const Dictionary &p_data); Dictionary _get_data() const; Error _load_from_buffer(const Vector &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 Size2i 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 enum Image3DValidateError { VALIDATE_3D_OK, VALIDATE_3D_ERR_IMAGE_EMPTY, VALIDATE_3D_ERR_MISSING_IMAGES, VALIDATE_3D_ERR_EXTRA_IMAGES, VALIDATE_3D_ERR_IMAGE_SIZE_MISMATCH, VALIDATE_3D_ERR_IMAGE_FORMAT_MISMATCH, VALIDATE_3D_ERR_IMAGE_HAS_MIPMAPS, }; static Image3DValidateError validate_3d_image(Format p_format, int p_width, int p_height, int p_depth, bool p_mipmaps, const Vector> &p_images); static String get_3d_image_validation_error_text(Image3DValidateError p_error); /** * Resize the image, using the preferred interpolation method. */ void resize_to_po2(bool p_square = false, Interpolation p_interpolation = INTERPOLATE_BILINEAR); void resize(int p_width, int p_height, Interpolation p_interpolation = INTERPOLATE_BILINEAR); void shrink_x2(); 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 rotate_90(ClockDirection p_direction); void rotate_180(); 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 &p_normal_map); void clear_mipmaps(); void normalize(); //for normal maps /** * Creates new internal image data of a given size and format. Current image will be lost. */ void initialize_data(int p_width, int p_height, bool p_use_mipmaps, Format p_format); void initialize_data(int p_width, int p_height, bool p_use_mipmaps, Format p_format, const Vector &p_data); void initialize_data(const char **p_xpm); /** * returns true when the image is empty (0,0) in size */ bool is_empty() const; Vector get_data() const; Error load(const String &p_path); static Ref load_from_file(const String &p_path); Error save_png(const String &p_path) const; Error save_jpg(const String &p_path, float p_quality = 0.75) const; Vector save_png_to_buffer() const; Vector save_jpg_to_buffer(float p_quality = 0.75) const; Vector save_exr_to_buffer(bool p_grayscale = false) const; Error save_exr(const String &p_path, bool p_grayscale = false) const; Error save_webp(const String &p_path, const bool p_lossy = false, const float p_quality = 0.75f) const; Vector save_webp_to_buffer(const bool p_lossy = false, const float p_quality = 0.75f) const; static Ref create_empty(int p_width, int p_height, bool p_use_mipmaps, Format p_format); static Ref create_from_data(int p_width, int p_height, bool p_use_mipmaps, Format p_format, const Vector &p_data); void set_data(int p_width, int p_height, bool p_use_mipmaps, Format p_format, const Vector &p_data); /** * 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 &p_data); ~Image() {} 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_ETC, COMPRESS_ETC2, COMPRESS_BPTC, COMPRESS_ASTC, COMPRESS_MAX, }; enum CompressSource { COMPRESS_SOURCE_GENERIC, COMPRESS_SOURCE_SRGB, COMPRESS_SOURCE_NORMAL, COMPRESS_SOURCE_MAX, }; Error compress(CompressMode p_mode, CompressSource p_source = COMPRESS_SOURCE_GENERIC, ASTCFormat p_astc_format = ASTC_FORMAT_4x4); Error compress_from_channels(CompressMode p_mode, UsedChannels p_channels, ASTCFormat p_astc_format = ASTC_FORMAT_4x4); Error decompress(); bool is_compressed() const; void fix_alpha_edges(); void premultiply_alpha(); void srgb_to_linear(); void normal_map_to_xy(); Ref rgbe_to_srgb(); Ref get_image_from_mipmap(int p_mipamp) const; void bump_map_to_normal_map(float bump_scale = 1.0); void blit_rect(const Ref &p_src, const Rect2i &p_src_rect, const Point2i &p_dest); void blit_rect_mask(const Ref &p_src, const Ref &p_mask, const Rect2i &p_src_rect, const Point2i &p_dest); void blend_rect(const Ref &p_src, const Rect2i &p_src_rect, const Point2i &p_dest); void blend_rect_mask(const Ref &p_src, const Ref &p_mask, const Rect2i &p_src_rect, const Point2i &p_dest); void fill(const Color &p_color); void fill_rect(const Rect2i &p_rect, const Color &p_color); Rect2i get_used_rect() const; Ref get_region(const Rect2i &p_area) const; static void set_compress_bc_func(void (*p_compress_func)(Image *, UsedChannels)); static void set_compress_bptc_func(void (*p_compress_func)(Image *, UsedChannels)); static String get_format_name(Format p_format); Error load_png_from_buffer(const Vector &p_array); Error load_jpg_from_buffer(const Vector &p_array); Error load_webp_from_buffer(const Vector &p_array); Error load_tga_from_buffer(const Vector &p_array); Error load_bmp_from_buffer(const Vector &p_array); Error load_ktx_from_buffer(const Vector &p_array); Error load_svg_from_buffer(const Vector &p_array, float scale = 1.0); Error load_svg_from_string(const String &p_svg_str, float scale = 1.0); void convert_rg_to_ra_rgba8(); void convert_ra_rgba8_to_rg(); void convert_rgba8_to_bgra8(); Image(const uint8_t *p_mem_png_jpg, int p_len = -1); Image(const char **p_xpm); virtual Ref duplicate(bool p_subresources = false) const override; UsedChannels detect_used_channels(CompressSource p_source = COMPRESS_SOURCE_GENERIC) const; void optimize_channels(); Color get_pixelv(const Point2i &p_point) const; Color get_pixel(int p_x, int p_y) const; void set_pixelv(const Point2i &p_point, const Color &p_color); void set_pixel(int p_x, int p_y, const Color &p_color); void adjust_bcs(float p_brightness, float p_contrast, float p_saturation); void set_as_black(); void copy_internals_from(const Ref &p_image) { ERR_FAIL_COND_MSG(p_image.is_null(), "Cannot copy image internals: invalid Image object."); format = p_image->format; width = p_image->width; height = p_image->height; mipmaps = p_image->mipmaps; data = p_image->data; } Dictionary compute_image_metrics(const Ref p_compared_image, bool p_luma_metric = true); }; 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) VARIANT_ENUM_CAST(Image::ASTCFormat) #endif // IMAGE_H