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/* Copyright (c) 2009 The Khronos Group Inc.
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* Portions copyright (c) 2009-2010 Nokia Corporation and/or its subsidiary(-ies)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and/or associated documentation files (the
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* "Materials"), to deal in the Materials without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Materials, and to
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* permit persons to whom the Materials are furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Materials.
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*
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* THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
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*/
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#ifndef OWFIMAGE_H_
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#define OWFIMAGE_H_
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#include "owftypes.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef void* OWF_DISPCTX;
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#undef USE_FLOAT_PIXEL
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/*
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* This is and always should be the only place where USE_FLOAT_PIXEL is
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* defined so if #define USE_FLOAT_PIXEL is absent in owfimage.h then it
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* can be assumed it is not defined elsewhere.
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*/
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//#define USE_FLOAT_PIXEL
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/* --
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* internal pixel format
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*/
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#ifdef USE_FLOAT_PIXEL
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#define OWF_IMAGE_INTERNAL_PIXEL_IS_FLOAT
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typedef OWFfloat OWFsubpixel; /* subpixel representation */
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#define OWF_RED_MIN_VALUE 0.0f
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#define OWF_RED_MAX_VALUE 1.0f
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#define OWF_GREEN_MIN_VALUE 0.0f
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#define OWF_GREEN_MAX_VALUE 1.0f
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#define OWF_BLUE_MIN_VALUE 0.0f
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#define OWF_BLUE_MAX_VALUE 1.0f
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#define OWF_ALPHA_MIN_VALUE 0.0f
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#define OWF_ALPHA_MAX_VALUE 1.0f
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#define OWF_FULLY_OPAQUE OWF_ALPHA_MAX_VALUE
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#define OWF_FULLY_TRANSPARENT OWF_ALPHA_MIN_VALUE
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#define OWF_BYTE_MAX_VALUE 255.0f
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#define OWF_BILINEAR_ROUNDING_VALUE 0.0f
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#define OWF_BLEND_ROUNDING_VALUE 0.0f
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#define OWF_PREMUL_ROUNDING_FACTOR 0.0f
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#define OWF_SOURCE_CONVERSION_ROUNDING_VALUE 0.0f
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#else
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#undef OWF_IMAGE_INTERNAL_PIXEL_IS_FLOAT
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typedef OWFuint8 OWFsubpixel; /* subpixel representation */
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#define OWF_RED_MIN_VALUE 0
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#define OWF_RED_MAX_VALUE 255
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#define OWF_GREEN_MIN_VALUE 0
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#define OWF_GREEN_MAX_VALUE 255
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#define OWF_BLUE_MIN_VALUE 0
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#define OWF_BLUE_MAX_VALUE 255
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#define OWF_ALPHA_MIN_VALUE 0
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#define OWF_ALPHA_MAX_VALUE 255
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#define OWF_FULLY_OPAQUE OWF_ALPHA_MAX_VALUE
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#define OWF_FULLY_TRANSPARENT OWF_ALPHA_MIN_VALUE
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#define OWF_BYTE_MAX_VALUE 255
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#define OWF_BILINEAR_ROUNDING_VALUE 0.5f
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#define OWF_SOURCE_CONVERSION_ROUNDING_VALUE 0.5f
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#define OWF_BLEND_ROUNDING_VALUE (OWF_ALPHA_MAX_VALUE/2)
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#define OWF_PREMUL_ROUNDING_FACTOR (OWF_ALPHA_MAX_VALUE/2)
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#endif
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/*
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* Byte order of different color formats
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* these are used when converting from/to
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* internal format
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*/
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#define ARGB8888_ALPHA_MASK 0xFF000000
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#define ARGB8888_RED_MASK 0x00FF0000
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#define ARGB8888_GREEN_MASK 0x0000FF00
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#define ARGB8888_BLUE_MASK 0x000000FF
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#define ARGB8888_ALPHA_SHIFT 24
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#define ARGB8888_RED_SHIFT 16
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#define ARGB8888_GREEN_SHIFT 8
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#define ARGB8888_BLUE_SHIFT 0
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#define RGB565_ALPHA_MASK 0xFFFF
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#define RGB565_RED_MASK 0xF800
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#define RGB565_GREEN_MASK 0x07E0
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#define RGB565_BLUE_MASK 0x001F
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/* These are used when converting from RGB565 to ARGB8888. */
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#define RGB565_ALPHA_SHIFT 16
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#define RGB565_RED_SHIFT 11
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#define RGB565_GREEN_SHIFT 5
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/* subpixels per pixel */
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#define OWF_PIXEL_SIZE 4
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/* subpixel in bytes */
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#define OWF_SUBPIXEL_SIZE sizeof(OWFsubpixel)
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#define OWF_BYTES_PER_PIXEL (OWF_PIXEL_SIZE * OWF_SUBPIXEL_SIZE)
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#pragma pack(push, 1)
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typedef union {
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struct {
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OWFsubpixel blue;
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OWFsubpixel green;
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OWFsubpixel red;
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OWFsubpixel alpha;
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} color;
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OWFsubpixel subpixel[OWF_PIXEL_SIZE];
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OWFuint8 pixelbytes[OWF_BYTES_PER_PIXEL];
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} OWFpixel;
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#pragma pack(pop)
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/* -- */
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/* filters used in OWF_Image_Stretch */
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typedef enum {
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OWF_FILTER_POINT_SAMPLING, /* nearest pixel */
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OWF_FILTER_BILINEAR /* nearest 4 */
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} OWF_FILTERING;
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typedef struct {
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OWFint width;
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OWFint height;
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OWFint stride; /* number of bytes per line */
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OWFint pixelSize; /* pixel size in bytes */
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OWF_IMAGE_FORMAT format;
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OWFboolean foreign;
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OWFint dataMax; /* data buffer max size */
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void* data;
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} OWF_IMAGE;
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/* This typedef denotes an owned OWF_IMAGE, as opposed to a temporary association.
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* Owned instances must be destroyed when the containing object is destroyed.
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*/
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typedef OWF_IMAGE* OWF_IMAGE_INST;
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typedef enum {
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OWF_FLIP_NONE,
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OWF_FLIP_VERTICALLY = 1,
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OWF_FLIP_HORIZONTALLY = 2
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} OWF_FLIP_DIRECTION;
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typedef enum {
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OWF_ROTATION_0 = 0,
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OWF_ROTATION_90 = 90,
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OWF_ROTATION_180 = 180,
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OWF_ROTATION_270 = 270
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} OWF_ROTATION;
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typedef enum {
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OWF_TRANSPARENCY_NONE,
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OWF_TRANSPARENCY_GLOBAL_ALPHA = (1 << 0),
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OWF_TRANSPARENCY_SOURCE_ALPHA = (1 << 1),
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OWF_TRANSPARENCY_MASK = (1 << 2),
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OWF_TRANSPARENCY_COLOR_KEY = (1 << 3)
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} OWF_TRANSPARENCY;
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typedef struct _OWF_BLEND_INFO {
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struct {
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OWF_IMAGE* image;
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OWF_RECTANGLE* rectangle;
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} destination;
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struct {
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OWF_IMAGE* image;
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OWF_RECTANGLE* rectangle;
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} source;
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OWF_IMAGE* mask;
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OWFsubpixel globalAlpha;
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} OWF_BLEND_INFO;
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/*!---------------------------------------------------------------------------
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* \brief Initialize image object
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*
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* \param image Image object to initialize
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*----------------------------------------------------------------------------*/
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OWF_API_CALL void
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OWF_Image_Init(OWF_IMAGE* image);
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/*!---------------------------------------------------------------------------
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* \brief Creates new reference counted image object
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*
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* \param width Image width (in pixels)
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* \param height Image height (in pixels)
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* \param format Image format (\see OWF_IMAGE_FORMAT)
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* \param buffer Pointer to image pixel data. If NULL, then a new
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* buffer is allocated for storing image pixel data.
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* Allocated buffer is owned by the image. If non-NULL,
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* then the image will be a "foreign" one, that doesn't
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* own the pixel data but merely uses it.
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* \param minimumStride Minimum number of bytes per scanline (may be zero)
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*
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*
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* \return New image object or NULL if error occured.
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*----------------------------------------------------------------------------*/
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OWF_PUBLIC OWF_IMAGE*
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OWF_Image_Create(OWFint width,
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OWFint height,
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const OWF_IMAGE_FORMAT* format,
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void* buffer,
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OWFint minimumStride);
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/*!---------------------------------------------------------------------------
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* \brief Destroy image object. Rather than actually destroying the image
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* immediately, this decrements image's reference count by one and once the
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* counter reaches zero, the actual deletion will occur.
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*
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* \param image Image to destroy
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*----------------------------------------------------------------------------*/
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OWF_PUBLIC void
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OWF_Image_Destroy(OWF_IMAGE* image);
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/*!---------------------------------------------------------------------------
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* \brief Create a pixel-perfect copy (clone) of the image. The copy will be
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* totally independent from the original image, i.e. doesn't share pixel
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* buffers or anything.
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*
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* \param image Image to copy
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*
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* \param Copy of the image or NULL if error occured.
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*----------------------------------------------------------------------------*/
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OWF_API_CALL OWF_IMAGE*
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OWF_Image_Copy(const OWF_IMAGE* image);
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/*!---------------------------------------------------------------------------
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* \brief Set image size. This doesn't modify the pixel data in anyway,
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* merely just changes the image header. Mostly used for (recycling) foreign
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* images that point to external pixel buffers.
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*
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* If the new pixel count (width * height) exceeds
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* current values, the pixel buffer will NOT be resized, but the call will FAIL.
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*
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* \param image Image to resize
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* \param width New width of the image
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* \param height New height of the image
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*
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*
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* \return Boolean value indicating success of the operation. In case of
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* failure, no modifications are done to original image.
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*----------------------------------------------------------------------------*/
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OWF_API_CALL OWFboolean
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OWF_Image_SetSize(OWF_IMAGE* image,
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OWFint width,
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OWFint height);
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/*!---------------------------------------------------------------------------
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* \brief Set internal mode flags. This doesn't modify the pixel data in anyway,
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* merely just changes the image header. Mostly used for (recycling) foreign
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* images that point to external pixel buffers.
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*
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*
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* \param image Image to resize
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* \param premultiply Image data is premultiplied
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* \param linear Image colour data is linear
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*
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*
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* \return Boolean value indicating success of the operation. In case of
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* failure, no modifications are done to original image.
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*----------------------------------------------------------------------------*/
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OWF_API_CALL void
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OWF_Image_SetFlags(OWF_IMAGE* image,
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OWFboolean premultiply,
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OWFboolean linear);
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/*!---------------------------------------------------------------------------
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* \brief Set the pixel buffer to an alternate location.
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* All other parameters remain the same.
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*
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* \param image Image to resize
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* \param buffer Image data source to start using
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*
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*----------------------------------------------------------------------------*/
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OWF_API_CALL void
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OWF_Image_SetPixelBuffer(OWF_IMAGE* image, void* buffer);
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/*!---------------------------------------------------------------------------
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* \brief Blit (1:1 copy) pixels from image to another w/ clipping.
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*
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* \param dst Destination image
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* \param dstRect Destination rectangle
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* \param src Source image
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* \param srcRect Source rectangle
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*
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* \return Boolean value indicating whether pixels were copied or not. If not,
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* it means that either of the rectangles is outside its respective image's
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* bounds.
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*----------------------------------------------------------------------------*/
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OWF_API_CALL OWFboolean
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OWF_Image_Blit(OWF_IMAGE* dst,
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OWF_RECTANGLE const* dstRect,
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OWF_IMAGE const* src,
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OWF_RECTANGLE const* srcRect);
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/*!---------------------------------------------------------------------------
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|
326 |
* \brief Stretch-blit (scaled copy) pixels from image to another w/ clipping.
|
sl@0
|
327 |
*
|
sl@0
|
328 |
* \param dst Destination image
|
sl@0
|
329 |
* \param dstRect Destination rectangle
|
sl@0
|
330 |
* \param src Source image
|
sl@0
|
331 |
* \param srcRect Source rectangle
|
sl@0
|
332 |
*
|
sl@0
|
333 |
* \return Boolean value indicating whether pixels were copied or not. If not,
|
sl@0
|
334 |
* it means that either of the rectangles is outside its respective image's
|
sl@0
|
335 |
* bounds.
|
sl@0
|
336 |
*----------------------------------------------------------------------------*/
|
sl@0
|
337 |
OWF_API_CALL OWFboolean
|
sl@0
|
338 |
OWF_Image_Stretch(OWF_IMAGE* dst,
|
sl@0
|
339 |
OWF_RECTANGLE* dstRect,
|
sl@0
|
340 |
OWF_IMAGE* src,
|
sl@0
|
341 |
OWFfloat* srcRect,
|
sl@0
|
342 |
OWF_FILTERING filter);
|
sl@0
|
343 |
|
sl@0
|
344 |
/*!---------------------------------------------------------------------------
|
sl@0
|
345 |
* \brief Multiply pixels' alpha value into rgb-color components.
|
sl@0
|
346 |
* Multiplies only if image source image is non-premultiplied.
|
sl@0
|
347 |
* \param image Image to convert to pre-multiplied domain.
|
sl@0
|
348 |
*----------------------------------------------------------------------------*/
|
sl@0
|
349 |
OWF_API_CALL void
|
sl@0
|
350 |
OWF_Image_PremultiplyAlpha(OWF_IMAGE* image);
|
sl@0
|
351 |
|
sl@0
|
352 |
/*!---------------------------------------------------------------------------
|
sl@0
|
353 |
* \brief Divide pixels' rgb-color components by its alpha value.
|
sl@0
|
354 |
*
|
sl@0
|
355 |
* \param image Image to convert to nonpre-multiplied domain.
|
sl@0
|
356 |
*----------------------------------------------------------------------------*/
|
sl@0
|
357 |
OWF_API_CALL void
|
sl@0
|
358 |
OWF_Image_UnpremultiplyAlpha(OWF_IMAGE* image);
|
sl@0
|
359 |
|
sl@0
|
360 |
/*!---------------------------------------------------------------------------
|
sl@0
|
361 |
* \brief Linearizes image pixel data
|
sl@0
|
362 |
*
|
sl@0
|
363 |
* \param image Image to convert to linear domain
|
sl@0
|
364 |
*----------------------------------------------------------------------------*/
|
sl@0
|
365 |
OWF_API_CALL void
|
sl@0
|
366 |
OWF_Image_LinearizeData(OWF_IMAGE* image);
|
sl@0
|
367 |
|
sl@0
|
368 |
/*!---------------------------------------------------------------------------
|
sl@0
|
369 |
* \brief Non-linearizes image pixel data
|
sl@0
|
370 |
*
|
sl@0
|
371 |
* \param image Image to convert to non-linear domain
|
sl@0
|
372 |
*----------------------------------------------------------------------------*/
|
sl@0
|
373 |
OWF_API_CALL void
|
sl@0
|
374 |
OWF_Image_NonLinearizeData(OWF_IMAGE* image);
|
sl@0
|
375 |
|
sl@0
|
376 |
/*!---------------------------------------------------------------------------
|
sl@0
|
377 |
* \brief Apply gamma correction to image pixel values
|
sl@0
|
378 |
*
|
sl@0
|
379 |
* \param image Image to operate on
|
sl@0
|
380 |
* \param gamma Gamma value
|
sl@0
|
381 |
*----------------------------------------------------------------------------*/
|
sl@0
|
382 |
OWF_API_CALL void
|
sl@0
|
383 |
OWF_Image_Gamma(OWF_IMAGE* image, OWFfloat gamma);
|
sl@0
|
384 |
|
sl@0
|
385 |
/*!---------------------------------------------------------------------------
|
sl@0
|
386 |
* \brief Flip (mirror) image about one or both of its center axes.
|
sl@0
|
387 |
*
|
sl@0
|
388 |
* \param image Image to flip
|
sl@0
|
389 |
* \param dir Flip direction. Valid values are
|
sl@0
|
390 |
* OWF_FLIP_NONE, OWF_FLIP_HORIZONTALLY,
|
sl@0
|
391 |
* OWF_FLIP_VERTICALLY or any bitwise-or combination
|
sl@0
|
392 |
* of the former.
|
sl@0
|
393 |
*----------------------------------------------------------------------------*/
|
sl@0
|
394 |
OWF_API_CALL void
|
sl@0
|
395 |
OWF_Image_Flip(OWF_IMAGE* image,
|
sl@0
|
396 |
OWF_FLIP_DIRECTION dir);
|
sl@0
|
397 |
|
sl@0
|
398 |
/*!---------------------------------------------------------------------------
|
sl@0
|
399 |
* \brief Rotate image n*90 degrees about its center
|
sl@0
|
400 |
*
|
sl@0
|
401 |
* \param dst Result (rotated) image.
|
sl@0
|
402 |
* \param src Source image.
|
sl@0
|
403 |
* \param rotation Rotation angle (OWF_ROTATION_0, OWF_ROTATION_90,
|
sl@0
|
404 |
* OWF_ROTATION_180, or OWF_ROTATION_270)
|
sl@0
|
405 |
*----------------------------------------------------------------------------*/
|
sl@0
|
406 |
OWF_API_CALL void
|
sl@0
|
407 |
OWF_Image_Rotate(OWF_IMAGE* dst,
|
sl@0
|
408 |
OWF_IMAGE* src,
|
sl@0
|
409 |
OWF_ROTATION rotation);
|
sl@0
|
410 |
|
sl@0
|
411 |
/*!---------------------------------------------------------------------------
|
sl@0
|
412 |
* \brief
|
sl@0
|
413 |
*
|
sl@0
|
414 |
* \param
|
sl@0
|
415 |
*
|
sl@0
|
416 |
* \return
|
sl@0
|
417 |
*----------------------------------------------------------------------------*/
|
sl@0
|
418 |
OWF_API_CALL void
|
sl@0
|
419 |
OWF_Image_Blend(OWF_BLEND_INFO* blend,
|
sl@0
|
420 |
OWF_TRANSPARENCY transparency);
|
sl@0
|
421 |
|
sl@0
|
422 |
/*!---------------------------------------------------------------------------
|
sl@0
|
423 |
* \brief
|
sl@0
|
424 |
*
|
sl@0
|
425 |
* \param
|
sl@0
|
426 |
*
|
sl@0
|
427 |
* \return
|
sl@0
|
428 |
*----------------------------------------------------------------------------*/
|
sl@0
|
429 |
OWF_API_CALL void
|
sl@0
|
430 |
OWF_Image_Clear(OWF_IMAGE* image,
|
sl@0
|
431 |
OWFsubpixel red,
|
sl@0
|
432 |
OWFsubpixel green,
|
sl@0
|
433 |
OWFsubpixel blue,
|
sl@0
|
434 |
OWFsubpixel alpha);
|
sl@0
|
435 |
|
sl@0
|
436 |
/*!---------------------------------------------------------------------------
|
sl@0
|
437 |
* \brief Convert image data from internal color format to destination format
|
sl@0
|
438 |
*
|
sl@0
|
439 |
* \param dst
|
sl@0
|
440 |
* \param src
|
sl@0
|
441 |
*
|
sl@0
|
442 |
* \return
|
sl@0
|
443 |
*----------------------------------------------------------------------------*/
|
sl@0
|
444 |
OWF_API_CALL OWFboolean
|
sl@0
|
445 |
OWF_Image_DestinationFormatConversion(OWF_IMAGE* dst,
|
sl@0
|
446 |
OWF_IMAGE* src);
|
sl@0
|
447 |
/*!---------------------------------------------------------------------------
|
sl@0
|
448 |
* \brief Test whether it will be possible to convert to destination format.
|
sl@0
|
449 |
* Note, no IMAGE object yet extists. This is effectively a "static" member method.
|
sl@0
|
450 |
* \param format proposed destination format
|
sl@0
|
451 |
*
|
sl@0
|
452 |
* \return boolean true if image lib can convert image data from internal color format
|
sl@0
|
453 |
*----------------------------------------------------------------------------*/
|
sl@0
|
454 |
OWF_API_CALL OWFboolean
|
sl@0
|
455 |
OWF_Image_IsValidDestinationFormat(OWF_IMAGE_FORMAT* format);
|
sl@0
|
456 |
|
sl@0
|
457 |
/*!---------------------------------------------------------------------------
|
sl@0
|
458 |
* \brief Convert image data from source format to internal format
|
sl@0
|
459 |
*
|
sl@0
|
460 |
* \param src
|
sl@0
|
461 |
* \param dst
|
sl@0
|
462 |
*
|
sl@0
|
463 |
* \return
|
sl@0
|
464 |
*----------------------------------------------------------------------------*/
|
sl@0
|
465 |
OWF_API_CALL OWFboolean
|
sl@0
|
466 |
OWF_Image_SourceFormatConversion(OWF_IMAGE* dst,
|
sl@0
|
467 |
OWF_IMAGE* src);
|
sl@0
|
468 |
|
sl@0
|
469 |
/*!---------------------------------------------------------------------------
|
sl@0
|
470 |
* \brief
|
sl@0
|
471 |
*
|
sl@0
|
472 |
* \param
|
sl@0
|
473 |
*
|
sl@0
|
474 |
* \return
|
sl@0
|
475 |
*----------------------------------------------------------------------------*/
|
sl@0
|
476 |
OWF_API_CALL void*
|
sl@0
|
477 |
OWF_Image_AllocData(OWF_DISPCTX dc, OWFint width,
|
sl@0
|
478 |
OWFint height,
|
sl@0
|
479 |
OWF_PIXEL_FORMAT format);
|
sl@0
|
480 |
|
sl@0
|
481 |
|
sl@0
|
482 |
/*!---------------------------------------------------------------------------
|
sl@0
|
483 |
* \brief
|
sl@0
|
484 |
*
|
sl@0
|
485 |
* \param
|
sl@0
|
486 |
*
|
sl@0
|
487 |
* \return
|
sl@0
|
488 |
*----------------------------------------------------------------------------*/
|
sl@0
|
489 |
OWF_API_CALL void
|
sl@0
|
490 |
OWF_Image_FreeData(OWF_DISPCTX dc, void** buffer);
|
sl@0
|
491 |
|
sl@0
|
492 |
/*!---------------------------------------------------------------------------
|
sl@0
|
493 |
* \brief
|
sl@0
|
494 |
*
|
sl@0
|
495 |
* \param
|
sl@0
|
496 |
*
|
sl@0
|
497 |
* \return
|
sl@0
|
498 |
*----------------------------------------------------------------------------*/
|
sl@0
|
499 |
OWF_API_CALL OWFint
|
sl@0
|
500 |
OWF_Image_GetFormatPixelSize(OWF_PIXEL_FORMAT format);
|
sl@0
|
501 |
|
sl@0
|
502 |
|
sl@0
|
503 |
/*!---------------------------------------------------------------------------
|
sl@0
|
504 |
* \brief Return stride (aligned row size in bytes) calculated from image
|
sl@0
|
505 |
* width and pixelSize. If pixelSize is negative image width must be divisible
|
sl@0
|
506 |
* by pixelSize.
|
sl@0
|
507 |
*
|
sl@0
|
508 |
* \param width Width of image
|
sl@0
|
509 |
* \param pixelSize Size of single pixel in bytes. Negative size
|
sl@0
|
510 |
* means value is a divisor (i.e. 1/pixelSize)
|
sl@0
|
511 |
* \param padding Number of bits each row is padded to.
|
sl@0
|
512 |
|
sl@0
|
513 |
* \return Row size in bytes.
|
sl@0
|
514 |
*----------------------------------------------------------------------------*/
|
sl@0
|
515 |
OWF_PUBLIC OWFint
|
sl@0
|
516 |
OWF_Image_GetStride(OWFint width,
|
sl@0
|
517 |
const OWF_IMAGE_FORMAT* format,OWFint minimumStride);
|
sl@0
|
518 |
|
sl@0
|
519 |
/*!---------------------------------------------------------------------------
|
sl@0
|
520 |
* \brief
|
sl@0
|
521 |
*
|
sl@0
|
522 |
* \param
|
sl@0
|
523 |
*
|
sl@0
|
524 |
* \return
|
sl@0
|
525 |
*----------------------------------------------------------------------------*/
|
sl@0
|
526 |
OWF_API_CALL OWFint
|
sl@0
|
527 |
OWF_Image_GetFormatPadding(OWF_PIXEL_FORMAT format);
|
sl@0
|
528 |
|
sl@0
|
529 |
/*!---------------------------------------------------------------------------
|
sl@0
|
530 |
* \brief Swap image width & height values in image header. Doesn't modify
|
sl@0
|
531 |
* image pixel data.
|
sl@0
|
532 |
*
|
sl@0
|
533 |
* \param image Image to operate on.
|
sl@0
|
534 |
*----------------------------------------------------------------------------*/
|
sl@0
|
535 |
OWF_API_CALL void
|
sl@0
|
536 |
OWF_Image_SwapWidthAndHeight(OWF_IMAGE* image);
|
sl@0
|
537 |
|
sl@0
|
538 |
/*!---------------------------------------------------------------------------
|
sl@0
|
539 |
* \brief Convert mask from external format to internal 8bpp format.
|
sl@0
|
540 |
*
|
sl@0
|
541 |
* \param output Result (converted) mask image
|
sl@0
|
542 |
* \param input Input mask image to convert.
|
sl@0
|
543 |
*
|
sl@0
|
544 |
* \return Boolean value indicating operation success. OWF_FALSE means that
|
sl@0
|
545 |
* input mask is either invalid or unsupported, or degenerate in some other
|
sl@0
|
546 |
* fascinating way.
|
sl@0
|
547 |
*----------------------------------------------------------------------------*/
|
sl@0
|
548 |
OWF_API_CALL OWFboolean
|
sl@0
|
549 |
OWF_Image_ConvertMask(OWF_IMAGE* output,
|
sl@0
|
550 |
OWF_IMAGE* input);
|
sl@0
|
551 |
|
sl@0
|
552 |
/*!---------------------------------------------------------------------------
|
sl@0
|
553 |
* \brief Return pointer to given pixel in image.
|
sl@0
|
554 |
*
|
sl@0
|
555 |
* \param image Image
|
sl@0
|
556 |
* \param x X-coordinate of the pixel (0..width-1)
|
sl@0
|
557 |
* \param y Y-coordinate of the pixel (0..height-1)
|
sl@0
|
558 |
*
|
sl@0
|
559 |
* The x & y coordinates will be clamped to [0..width-1, 0..height-1]
|
sl@0
|
560 |
*
|
sl@0
|
561 |
* \return Pointer to given pixel
|
sl@0
|
562 |
*----------------------------------------------------------------------------*/
|
sl@0
|
563 |
OWF_API_CALL OWFpixel*
|
sl@0
|
564 |
OWF_Image_GetPixelPtr(OWF_IMAGE* image,
|
sl@0
|
565 |
OWFint x,
|
sl@0
|
566 |
OWFint y);
|
sl@0
|
567 |
|
sl@0
|
568 |
/*!---------------------------------------------------------------------------
|
sl@0
|
569 |
* \brief Read single pixel from image
|
sl@0
|
570 |
*
|
sl@0
|
571 |
* \param image Image
|
sl@0
|
572 |
* \param x Pixel x coordinate
|
sl@0
|
573 |
* \param y Pixel y coordinate
|
sl@0
|
574 |
* \param pixel Where to store the pixel color value
|
sl@0
|
575 |
*
|
sl@0
|
576 |
* Coordinates are clamped to region (0..width-1, 0..height-1)
|
sl@0
|
577 |
*----------------------------------------------------------------------------*/
|
sl@0
|
578 |
OWF_API_CALL void
|
sl@0
|
579 |
OWF_Image_GetPixel(OWF_IMAGE* image,
|
sl@0
|
580 |
OWFint x,
|
sl@0
|
581 |
OWFint y,
|
sl@0
|
582 |
OWFpixel* pixel);
|
sl@0
|
583 |
|
sl@0
|
584 |
/*!---------------------------------------------------------------------------
|
sl@0
|
585 |
* \brief Write a pixel into image
|
sl@0
|
586 |
*
|
sl@0
|
587 |
* \param image Image
|
sl@0
|
588 |
* \param x Pixel x coordinate
|
sl@0
|
589 |
* \param y Pixel y coordinate
|
sl@0
|
590 |
* \param pixel Color of the pixel
|
sl@0
|
591 |
*
|
sl@0
|
592 |
* Coordinates are clamped to region (0..width-1, 0..height-1)
|
sl@0
|
593 |
*----------------------------------------------------------------------------*/
|
sl@0
|
594 |
OWF_API_CALL void
|
sl@0
|
595 |
OWF_Image_SetPixel(OWF_IMAGE* image,
|
sl@0
|
596 |
OWFint x,
|
sl@0
|
597 |
OWFint y,
|
sl@0
|
598 |
OWFpixel const* pixel);
|
sl@0
|
599 |
|
sl@0
|
600 |
#ifdef __cplusplus
|
sl@0
|
601 |
}
|
sl@0
|
602 |
#endif
|
sl@0
|
603 |
|
sl@0
|
604 |
#endif
|