code:
/*
  Simple DirectMedia Layer
  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
*/

/**
 *  \file SDL_render.h
 *
 *  Header file for SDL 2D rendering functions.
 *
 *  This API supports the following features:
 *      * single pixel points
 *      * single pixel lines
 *      * filled rectangles
 *      * texture images
 *
 *  The primitives may be drawn in opaque, blended, or additive modes.
 *
 *  The texture images may be drawn in opaque, blended, or additive modes.
 *  They can have an additional color tint or alpha modulation applied to
 *  them, and may also be stretched with linear interpolation.
 *
 *  This API is designed to accelerate simple 2D operations. You may
 *  want more functionality such as polygons and particle effects and
 *  in that case you should use SDL's OpenGL/Direct3D support or one
 *  of the many good 3D engines.
 *
 *  These functions must be called from the main thread.
 *  See this bug for details: http://bugzilla.libsdl.org/show_bug.cgi?id=1995
 */

#ifndef SDL_render_h_
#define SDL_render_h_

#include "SDL_stdinc.h"
#include "SDL_rect.h"
#include "SDL_video.h"

#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif

/**
 *  \brief Flags used when creating a rendering context
 */
typedef enum
{
    SDL_RENDERER_SOFTWARE = 0x00000001,         /**< The renderer is a software fallback */
    SDL_RENDERER_ACCELERATED = 0x00000002,      /**< The renderer uses hardware
                                                     acceleration */
    SDL_RENDERER_PRESENTVSYNC = 0x00000004,     /**< Present is synchronized
                                                     with the refresh rate */
    SDL_RENDERER_TARGETTEXTURE = 0x00000008     /**< The renderer supports
                                                     rendering to texture */
} SDL_RendererFlags;

/**
 *  \brief Information on the capabilities of a render driver or context.
 */
typedef struct SDL_RendererInfo
{
    const char *name;           /**< The name of the renderer */
    Uint32 flags;               /**< Supported ::SDL_RendererFlags */
    Uint32 num_texture_formats; /**< The number of available texture formats */
    Uint32 texture_formats[16]; /**< The available texture formats */
    int max_texture_width;      /**< The maximum texture width */
    int max_texture_height;     /**< The maximum texture height */
} SDL_RendererInfo;

/**
 *  \brief The access pattern allowed for a texture.
 */
typedef enum
{
    SDL_TEXTUREACCESS_STATIC,    /**< Changes rarely, not lockable */
    SDL_TEXTUREACCESS_STREAMING, /**< Changes frequently, lockable */
    SDL_TEXTUREACCESS_TARGET     /**< Texture can be used as a render target */
} SDL_TextureAccess;

/**
 *  \brief The texture channel modulation used in SDL_RenderCopy().
 */
typedef enum
{
    SDL_TEXTUREMODULATE_NONE = 0x00000000,     /**< No modulation */
    SDL_TEXTUREMODULATE_COLOR = 0x00000001,    /**< srcC = srcC * color */
    SDL_TEXTUREMODULATE_ALPHA = 0x00000002     /**< srcA = srcA * alpha */
} SDL_TextureModulate;

/**
 *  \brief Flip constants for SDL_RenderCopyEx
 */
typedef enum
{
    SDL_FLIP_NONE = 0x00000000,     /**< Do not flip */
    SDL_FLIP_HORIZONTAL = 0x00000001,    /**< flip horizontally */
    SDL_FLIP_VERTICAL = 0x00000002     /**< flip vertically */
} SDL_RendererFlip;

/**
 *  \brief A structure representing rendering state
 */
struct SDL_Renderer;
typedef struct SDL_Renderer SDL_Renderer;

/**
 *  \brief An efficient driver-specific representation of pixel data
 */
struct SDL_Texture;
typedef struct SDL_Texture SDL_Texture;

/* Function prototypes */

/**
 *  \brief Get the number of 2D rendering drivers available for the current
 *         display.
 *
 *  A render driver is a set of code that handles rendering and texture
 *  management on a particular display.  Normally there is only one, but
 *  some drivers may have several available with different capabilities.
 *
 *  \sa SDL_GetRenderDriverInfo()
 *  \sa SDL_CreateRenderer()
 */
extern DECLSPEC int SDLCALL SDL_GetNumRenderDrivers(void);

/**
 *  \brief Get information about a specific 2D rendering driver for the current
 *         display.
 *
 *  \param index The index of the driver to query information about.
 *  \param info  A pointer to an SDL_RendererInfo struct to be filled with
 *               information on the rendering driver.
 *
 *  \return 0 on success, -1 if the index was out of range.
 *
 *  \sa SDL_CreateRenderer()
 */
extern DECLSPEC int SDLCALL SDL_GetRenderDriverInfo(int index,
                                                    SDL_RendererInfo * info);

/**
 *  \brief Create a window and default renderer
 *
 *  \param width    The width of the window
 *  \param height   The height of the window
 *  \param window_flags The flags used to create the window
 *  \param window   A pointer filled with the window, or NULL on error
 *  \param renderer A pointer filled with the renderer, or NULL on error
 *
 *  \return 0 on success, or -1 on error
 */
extern DECLSPEC int SDLCALL SDL_CreateWindowAndRenderer(
                                int width, int height, Uint32 window_flags,
                                SDL_Window **window, SDL_Renderer **renderer);

/**
 *  \brief Create a 2D rendering context for a window.
 *
 *  \param window The window where rendering is displayed.
 *  \param index    The index of the rendering driver to initialize, or -1 to
 *                  initialize the first one supporting the requested flags.
 *  \param flags    ::SDL_RendererFlags.
 *
 *  \return A valid rendering context or NULL if there was an error.
 *
 *  \sa SDL_CreateSoftwareRenderer()
 *  \sa SDL_GetRendererInfo()
 *  \sa SDL_DestroyRenderer()
 */
extern DECLSPEC SDL_Renderer * SDLCALL SDL_CreateRenderer(SDL_Window * window,
                                               int index, Uint32 flags);

/**
 *  \brief Create a 2D software rendering context for a surface.
 *
 *  \param surface The surface where rendering is done.
 *
 *  \return A valid rendering context or NULL if there was an error.
 *
 *  \sa SDL_CreateRenderer()
 *  \sa SDL_DestroyRenderer()
 */
extern DECLSPEC SDL_Renderer * SDLCALL SDL_CreateSoftwareRenderer(SDL_Surface * surface);

/**
 *  \brief Get the renderer associated with a window.
 */
extern DECLSPEC SDL_Renderer * SDLCALL SDL_GetRenderer(SDL_Window * window);

/**
 *  \brief Get information about a rendering context.
 */
extern DECLSPEC int SDLCALL SDL_GetRendererInfo(SDL_Renderer * renderer,
                                                SDL_RendererInfo * info);

/**
 *  \brief Get the output size in pixels of a rendering context.
 */
extern DECLSPEC int SDLCALL SDL_GetRendererOutputSize(SDL_Renderer * renderer,
                                                      int *w, int *h);

/**
 *  \brief Create a texture for a rendering context.
 *
 *  \param renderer The renderer.
 *  \param format The format of the texture.
 *  \param access One of the enumerated values in ::SDL_TextureAccess.
 *  \param w      The width of the texture in pixels.
 *  \param h      The height of the texture in pixels.
 *
 *  \return The created texture is returned, or NULL if no rendering context was
 *          active,  the format was unsupported, or the width or height were out
 *          of range.
 *
 *  \note The contents of the texture are not defined at creation.
 *
 *  \sa SDL_QueryTexture()
 *  \sa SDL_UpdateTexture()
 *  \sa SDL_DestroyTexture()
 */
extern DECLSPEC SDL_Texture * SDLCALL SDL_CreateTexture(SDL_Renderer * renderer,
                                                        Uint32 format,
                                                        int access, int w,
                                                        int h);

/**
 *  \brief Create a texture from an existing surface.
 *
 *  \param renderer The renderer.
 *  \param surface The surface containing pixel data used to fill the texture.
 *
 *  \return The created texture is returned, or NULL on error.
 *
 *  \note The surface is not modified or freed by this function.
 *
 *  \sa SDL_QueryTexture()
 *  \sa SDL_DestroyTexture()
 */
extern DECLSPEC SDL_Texture * SDLCALL SDL_CreateTextureFromSurface(SDL_Renderer * renderer, SDL_Surface * surface);

/**
 *  \brief Query the attributes of a texture
 *
 *  \param texture A texture to be queried.
 *  \param format  A pointer filled in with the raw format of the texture.  The
 *                 actual format may differ, but pixel transfers will use this
 *                 format.
 *  \param access  A pointer filled in with the actual access to the texture.
 *  \param w       A pointer filled in with the width of the texture in pixels.
 *  \param h       A pointer filled in with the height of the texture in pixels.
 *
 *  \return 0 on success, or -1 if the texture is not valid.
 */
extern DECLSPEC int SDLCALL SDL_QueryTexture(SDL_Texture * texture,
                                             Uint32 * format, int *access,
                                             int *w, int *h);

/**
 *  \brief Set an additional color value used in render copy operations.
 *
 *  \param texture The texture to update.
 *  \param r       The red color value multiplied into copy operations.
 *  \param g       The green color value multiplied into copy operations.
 *  \param b       The blue color value multiplied into copy operations.
 *
 *  \return 0 on success, or -1 if the texture is not valid or color modulation
 *          is not supported.
 *
 *  \sa SDL_GetTextureColorMod()
 */
extern DECLSPEC int SDLCALL SDL_SetTextureColorMod(SDL_Texture * texture,
                                                   Uint8 r, Uint8 g, Uint8 b);

/**
 *  \brief Get the additional color value used in render copy operations.
 *
 *  \param texture The texture to query.
 *  \param r         A pointer filled in with the current red color value.
 *  \param g         A pointer filled in with the current green color value.
 *  \param b         A pointer filled in with the current blue color value.
 *
 *  \return 0 on success, or -1 if the texture is not valid.
 *
 *  \sa SDL_SetTextureColorMod()
 */
extern DECLSPEC int SDLCALL SDL_GetTextureColorMod(SDL_Texture * texture,
                                                   Uint8 * r, Uint8 * g,
                                                   Uint8 * b);

/**
 *  \brief Set an additional alpha value used in render copy operations.
 *
 *  \param texture The texture to update.
 *  \param alpha     The alpha value multiplied into copy operations.
 *
 *  \return 0 on success, or -1 if the texture is not valid or alpha modulation
 *          is not supported.
 *
 *  \sa SDL_GetTextureAlphaMod()
 */
extern DECLSPEC int SDLCALL SDL_SetTextureAlphaMod(SDL_Texture * texture,
                                                   Uint8 alpha);

/**
 *  \brief Get the additional alpha value used in render copy operations.
 *
 *  \param texture The texture to query.
 *  \param alpha     A pointer filled in with the current alpha value.
 *
 *  \return 0 on success, or -1 if the texture is not valid.
 *
 *  \sa SDL_SetTextureAlphaMod()
 */
extern DECLSPEC int SDLCALL SDL_GetTextureAlphaMod(SDL_Texture * texture,
                                                   Uint8 * alpha);

/**
 *  \brief Set the blend mode used for texture copy operations.
 *
 *  \param texture The texture to update.
 *  \param blendMode ::SDL_BlendMode to use for texture blending.
 *
 *  \return 0 on success, or -1 if the texture is not valid or the blend mode is
 *          not supported.
 *
 *  \note If the blend mode is not supported, the closest supported mode is
 *        chosen.
 *
 *  \sa SDL_GetTextureBlendMode()
 */
extern DECLSPEC int SDLCALL SDL_SetTextureBlendMode(SDL_Texture * texture,
                                                    SDL_BlendMode blendMode);

/**
 *  \brief Get the blend mode used for texture copy operations.
 *
 *  \param texture   The texture to query.
 *  \param blendMode A pointer filled in with the current blend mode.
 *
 *  \return 0 on success, or -1 if the texture is not valid.
 *
 *  \sa SDL_SetTextureBlendMode()
 */
extern DECLSPEC int SDLCALL SDL_GetTextureBlendMode(SDL_Texture * texture,
                                                    SDL_BlendMode *blendMode);

/**
 *  \brief Update the given texture rectangle with new pixel data.
 *
 *  \param texture   The texture to update
 *  \param rect      A pointer to the rectangle of pixels to update, or NULL to
 *                   update the entire texture.
 *  \param pixels    The raw pixel data in the format of the texture.
 *  \param pitch     The number of bytes in a row of pixel data, including padding between lines.
 *
 *  The pixel data must be in the format of the texture. The pixel format can be
 *  queried with SDL_QueryTexture.
 *
 *  \return 0 on success, or -1 if the texture is not valid.
 *
 *  \note This is a fairly slow function.
 */
extern DECLSPEC int SDLCALL SDL_UpdateTexture(SDL_Texture * texture,
                                              const SDL_Rect * rect,
                                              const void *pixels, int pitch);

/**
 *  \brief Update a rectangle within a planar YV12 or IYUV texture with new pixel data.
 *
 *  \param texture   The texture to update
 *  \param rect      A pointer to the rectangle of pixels to update, or NULL to
 *                   update the entire texture.
 *  \param Yplane    The raw pixel data for the Y plane.
 *  \param Ypitch    The number of bytes between rows of pixel data for the Y plane.
 *  \param Uplane    The raw pixel data for the U plane.
 *  \param Upitch    The number of bytes between rows of pixel data for the U plane.
 *  \param Vplane    The raw pixel data for the V plane.
 *  \param Vpitch    The number of bytes between rows of pixel data for the V plane.
 *
 *  \return 0 on success, or -1 if the texture is not valid.
 *
 *  \note You can use SDL_UpdateTexture() as long as your pixel data is
 *        a contiguous block of Y and U/V planes in the proper order, but
 *        this function is available if your pixel data is not contiguous.
 */
extern DECLSPEC int SDLCALL SDL_UpdateYUVTexture(SDL_Texture * texture,
                                                 const SDL_Rect * rect,
                                                 const Uint8 *Yplane, int Ypitch,
                                                 const Uint8 *Uplane, int Upitch,
                                                 const Uint8 *Vplane, int Vpitch);

/**
 *  \brief Lock a portion of the texture for write-only pixel access.
 *
 *  \param texture   The texture to lock for access, which was created with
 *                   ::SDL_TEXTUREACCESS_STREAMING.
 *  \param rect      A pointer to the rectangle to lock for access. If the rect
 *                   is NULL, the entire texture will be locked.
 *  \param pixels    This is filled in with a pointer to the locked pixels,
 *                   appropriately offset by the locked area.
 *  \param pitch     This is filled in with the pitch of the locked pixels.
 *
 *  \return 0 on success, or -1 if the texture is not valid or was not created with ::SDL_TEXTUREACCESS_STREAMING.
 *
 *  \sa SDL_UnlockTexture()
 */
extern DECLSPEC int SDLCALL SDL_LockTexture(SDL_Texture * texture,
                                            const SDL_Rect * rect,
                                            void **pixels, int *pitch);

/**
 *  \brief Unlock a texture, uploading the changes to video memory, if needed.
 *
 *  \sa SDL_LockTexture()
 */
extern DECLSPEC void SDLCALL SDL_UnlockTexture(SDL_Texture * texture);

/**
 * \brief Determines whether a window supports the use of render targets
 *
 * \param renderer The renderer that will be checked
 *
 * \return SDL_TRUE if supported, SDL_FALSE if not.
 */
extern DECLSPEC SDL_bool SDLCALL SDL_RenderTargetSupported(SDL_Renderer *renderer);

/**
 * \brief Set a texture as the current rendering target.
 *
 * \param renderer The renderer.
 * \param texture The targeted texture, which must be created with the SDL_TEXTUREACCESS_TARGET flag, or NULL for the default render target
 *
 * \return 0 on success, or -1 on error
 *
 *  \sa SDL_GetRenderTarget()
 */
extern DECLSPEC int SDLCALL SDL_SetRenderTarget(SDL_Renderer *renderer,
                                                SDL_Texture *texture);

/**
 * \brief Get the current render target or NULL for the default render target.
 *
 * \return The current render target
 *
 *  \sa SDL_SetRenderTarget()
 */
extern DECLSPEC SDL_Texture * SDLCALL SDL_GetRenderTarget(SDL_Renderer *renderer);

/**
 *  \brief Set device independent resolution for rendering
 *
 *  \param renderer The renderer for which resolution should be set.
 *  \param w      The width of the logical resolution
 *  \param h      The height of the logical resolution
 *
 *  This function uses the viewport and scaling functionality to allow a fixed logical
 *  resolution for rendering, regardless of the actual output resolution.  If the actual
 *  output resolution doesn't have the same aspect ratio the output rendering will be
 *  centered within the output display.
 *
 *  If the output display is a window, mouse events in the window will be filtered
 *  and scaled so they seem to arrive within the logical resolution.
 *
 *  \note If this function results in scaling or subpixel drawing by the
 *        rendering backend, it will be handled using the appropriate
 *        quality hints.
 *
 *  \sa SDL_RenderGetLogicalSize()
 *  \sa SDL_RenderSetScale()
 *  \sa SDL_RenderSetViewport()
 */
extern DECLSPEC int SDLCALL SDL_RenderSetLogicalSize(SDL_Renderer * renderer, int w, int h);

/**
 *  \brief Get device independent resolution for rendering
 *
 *  \param renderer The renderer from which resolution should be queried.
 *  \param w      A pointer filled with the width of the logical resolution
 *  \param h      A pointer filled with the height of the logical resolution
 *
 *  \sa SDL_RenderSetLogicalSize()
 */
extern DECLSPEC void SDLCALL SDL_RenderGetLogicalSize(SDL_Renderer * renderer, int *w, int *h);

/**
 *  \brief Set whether to force integer scales for resolution-independent rendering
 *
 *  \param renderer The renderer for which integer scaling should be set.
 *  \param enable   Enable or disable integer scaling
 *
 *  This function restricts the logical viewport to integer values - that is, when
 *  a resolution is between two multiples of a logical size, the viewport size is
 *  rounded down to the lower multiple.
 *
 *  \sa SDL_RenderSetLogicalSize()
 */
extern DECLSPEC int SDLCALL SDL_RenderSetIntegerScale(SDL_Renderer * renderer,
                                                      SDL_bool enable);

/**
 *  \brief Get whether integer scales are forced for resolution-independent rendering
 *
 *  \param renderer The renderer from which integer scaling should be queried.
 *
 *  \sa SDL_RenderSetIntegerScale()
 */
extern DECLSPEC SDL_bool SDLCALL SDL_RenderGetIntegerScale(SDL_Renderer * renderer);

/**
 *  \brief Set the drawing area for rendering on the current target.
 *
 *  \param renderer The renderer for which the drawing area should be set.
 *  \param rect The rectangle representing the drawing area, or NULL to set the viewport to the entire target.
 *
 *  The x,y of the viewport rect represents the origin for rendering.
 *
 *  \return 0 on success, or -1 on error
 *
 *  \note If the window associated with the renderer is resized, the viewport is automatically reset.
 *
 *  \sa SDL_RenderGetViewport()
 *  \sa SDL_RenderSetLogicalSize()
 */
extern DECLSPEC int SDLCALL SDL_RenderSetViewport(SDL_Renderer * renderer,
                                                  const SDL_Rect * rect);

/**
 *  \brief Get the drawing area for the current target.
 *
 *  \sa SDL_RenderSetViewport()
 */
extern DECLSPEC void SDLCALL SDL_RenderGetViewport(SDL_Renderer * renderer,
                                                   SDL_Rect * rect);

/**
 *  \brief Set the clip rectangle for the current target.
 *
 *  \param renderer The renderer for which clip rectangle should be set.
 *  \param rect   A pointer to the rectangle to set as the clip rectangle, or
 *                NULL to disable clipping.
 *
 *  \return 0 on success, or -1 on error
 *
 *  \sa SDL_RenderGetClipRect()
 */
extern DECLSPEC int SDLCALL SDL_RenderSetClipRect(SDL_Renderer * renderer,
                                                  const SDL_Rect * rect);

/**
 *  \brief Get the clip rectangle for the current target.
 *
 *  \param renderer The renderer from which clip rectangle should be queried.
 *  \param rect   A pointer filled in with the current clip rectangle, or
 *                an empty rectangle if clipping is disabled.
 *
 *  \sa SDL_RenderSetClipRect()
 */
extern DECLSPEC void SDLCALL SDL_RenderGetClipRect(SDL_Renderer * renderer,
                                                   SDL_Rect * rect);

/**
 *  \brief Get whether clipping is enabled on the given renderer.
 *
 *  \param renderer The renderer from which clip state should be queried.
 *
 *  \sa SDL_RenderGetClipRect()
 */
extern DECLSPEC SDL_bool SDLCALL SDL_RenderIsClipEnabled(SDL_Renderer * renderer);

/**
 *  \brief Set the drawing scale for rendering on the current target.
 *
 *  \param renderer The renderer for which the drawing scale should be set.
 *  \param scaleX The horizontal scaling factor
 *  \param scaleY The vertical scaling factor
 *
 *  The drawing coordinates are scaled by the x/y scaling factors
 *  before they are used by the renderer.  This allows resolution
 *  independent drawing with a single coordinate system.
 *
 *  \note If this results in scaling or subpixel drawing by the
 *        rendering backend, it will be handled using the appropriate
 *        quality hints.  For best results use integer scaling factors.
 *
 *  \sa SDL_RenderGetScale()
 *  \sa SDL_RenderSetLogicalSize()
 */
extern DECLSPEC int SDLCALL SDL_RenderSetScale(SDL_Renderer * renderer,
                                               float scaleX, float scaleY);

/**
 *  \brief Get the drawing scale for the current target.
 *
 *  \param renderer The renderer from which drawing scale should be queried.
 *  \param scaleX A pointer filled in with the horizontal scaling factor
 *  \param scaleY A pointer filled in with the vertical scaling factor
 *
 *  \sa SDL_RenderSetScale()
 */
extern DECLSPEC void SDLCALL SDL_RenderGetScale(SDL_Renderer * renderer,
                                               float *scaleX, float *scaleY);

/**
 *  \brief Set the color used for drawing operations (Rect, Line and Clear).
 *
 *  \param renderer The renderer for which drawing color should be set.
 *  \param r The red value used to draw on the rendering target.
 *  \param g The green value used to draw on the rendering target.
 *  \param b The blue value used to draw on the rendering target.
 *  \param a The alpha value used to draw on the rendering target, usually
 *           ::SDL_ALPHA_OPAQUE (255).
 *
 *  \return 0 on success, or -1 on error
 */
extern DECLSPEC int SDLCALL SDL_SetRenderDrawColor(SDL_Renderer * renderer,
                                           Uint8 r, Uint8 g, Uint8 b,
                                           Uint8 a);

/**
 *  \brief Get the color used for drawing operations (Rect, Line and Clear).
 *
 *  \param renderer The renderer from which drawing color should be queried.
 *  \param r A pointer to the red value used to draw on the rendering target.
 *  \param g A pointer to the green value used to draw on the rendering target.
 *  \param b A pointer to the blue value used to draw on the rendering target.
 *  \param a A pointer to the alpha value used to draw on the rendering target,
 *           usually ::SDL_ALPHA_OPAQUE (255).
 *
 *  \return 0 on success, or -1 on error
 */
extern DECLSPEC int SDLCALL SDL_GetRenderDrawColor(SDL_Renderer * renderer,
                                           Uint8 * r, Uint8 * g, Uint8 * b,
                                           Uint8 * a);

/**
 *  \brief Set the blend mode used for drawing operations (Fill and Line).
 *
 *  \param renderer The renderer for which blend mode should be set.
 *  \param blendMode ::SDL_BlendMode to use for blending.
 *
 *  \return 0 on success, or -1 on error
 *
 *  \note If the blend mode is not supported, the closest supported mode is
 *        chosen.
 *
 *  \sa SDL_GetRenderDrawBlendMode()
 */
extern DECLSPEC int SDLCALL SDL_SetRenderDrawBlendMode(SDL_Renderer * renderer,
                                                       SDL_BlendMode blendMode);

/**
 *  \brief Get the blend mode used for drawing operations.
 *
 *  \param renderer The renderer from which blend mode should be queried.
 *  \param blendMode A pointer filled in with the current blend mode.
 *
 *  \return 0 on success, or -1 on error
 *
 *  \sa SDL_SetRenderDrawBlendMode()
 */
extern DECLSPEC int SDLCALL SDL_GetRenderDrawBlendMode(SDL_Renderer * renderer,
                                                       SDL_BlendMode *blendMode);

/**
 *  \brief Clear the current rendering target with the drawing color
 *
 *  This function clears the entire rendering target, ignoring the viewport and
 *  the clip rectangle.
 *
 *  \return 0 on success, or -1 on error
 */
extern DECLSPEC int SDLCALL SDL_RenderClear(SDL_Renderer * renderer);

/**
 *  \brief Draw a point on the current rendering target.
 *
 *  \param renderer The renderer which should draw a point.
 *  \param x The x coordinate of the point.
 *  \param y The y coordinate of the point.
 *
 *  \return 0 on success, or -1 on error
 */
extern DECLSPEC int SDLCALL SDL_RenderDrawPoint(SDL_Renderer * renderer,
                                                int x, int y);

/**
 *  \brief Draw multiple points on the current rendering target.
 *
 *  \param renderer The renderer which should draw multiple points.
 *  \param points The points to draw
 *  \param count The number of points to draw
 *
 *  \return 0 on success, or -1 on error
 */
extern DECLSPEC int SDLCALL SDL_RenderDrawPoints(SDL_Renderer * renderer,
                                                 const SDL_Point * points,
                                                 int count);

/**
 *  \brief Draw a line on the current rendering target.
 *
 *  \param renderer The renderer which should draw a line.
 *  \param x1 The x coordinate of the start point.
 *  \param y1 The y coordinate of the start point.
 *  \param x2 The x coordinate of the end point.
 *  \param y2 The y coordinate of the end point.
 *
 *  \return 0 on success, or -1 on error
 */
extern DECLSPEC int SDLCALL SDL_RenderDrawLine(SDL_Renderer * renderer,
                                               int x1, int y1, int x2, int y2);

/**
 *  \brief Draw a series of connected lines on the current rendering target.
 *
 *  \param renderer The renderer which should draw multiple lines.
 *  \param points The points along the lines
 *  \param count The number of points, drawing count-1 lines
 *
 *  \return 0 on success, or -1 on error
 */
extern DECLSPEC int SDLCALL SDL_RenderDrawLines(SDL_Renderer * renderer,
                                                const SDL_Point * points,
                                                int count);

/**
 *  \brief Draw a rectangle on the current rendering target.
 *
 *  \param renderer The renderer which should draw a rectangle.
 *  \param rect A pointer to the destination rectangle, or NULL to outline the entire rendering target.
 *
 *  \return 0 on success, or -1 on error
 */
extern DECLSPEC int SDLCALL SDL_RenderDrawRect(SDL_Renderer * renderer,
                                               const SDL_Rect * rect);

/**
 *  \brief Draw some number of rectangles on the current rendering target.
 *
 *  \param renderer The renderer which should draw multiple rectangles.
 *  \param rects A pointer to an array of destination rectangles.
 *  \param count The number of rectangles.
 *
 *  \return 0 on success, or -1 on error
 */
extern DECLSPEC int SDLCALL SDL_RenderDrawRects(SDL_Renderer * renderer,
                                                const SDL_Rect * rects,
                                                int count);

/**
 *  \brief Fill a rectangle on the current rendering target with the drawing color.
 *
 *  \param renderer The renderer which should fill a rectangle.
 *  \param rect A pointer to the destination rectangle, or NULL for the entire
 *              rendering target.
 *
 *  \return 0 on success, or -1 on error
 */
extern DECLSPEC int SDLCALL SDL_RenderFillRect(SDL_Renderer * renderer,
                                               const SDL_Rect * rect);

/**
 *  \brief Fill some number of rectangles on the current rendering target with the drawing color.
 *
 *  \param renderer The renderer which should fill multiple rectangles.
 *  \param rects A pointer to an array of destination rectangles.
 *  \param count The number of rectangles.
 *
 *  \return 0 on success, or -1 on error
 */
extern DECLSPEC int SDLCALL SDL_RenderFillRects(SDL_Renderer * renderer,
                                                const SDL_Rect * rects,
                                                int count);

/**
 *  \brief Copy a portion of the texture to the current rendering target.
 *
 *  \param renderer The renderer which should copy parts of a texture.
 *  \param texture The source texture.
 *  \param srcrect   A pointer to the source rectangle, or NULL for the entire
 *                   texture.
 *  \param dstrect   A pointer to the destination rectangle, or NULL for the
 *                   entire rendering target.
 *
 *  \return 0 on success, or -1 on error
 */
extern DECLSPEC int SDLCALL SDL_RenderCopy(SDL_Renderer * renderer,
                                           SDL_Texture * texture,
                                           const SDL_Rect * srcrect,
                                           const SDL_Rect * dstrect);

/**
 *  \brief Copy a portion of the source texture to the current rendering target, rotating it by angle around the given center
 *
 *  \param renderer The renderer which should copy parts of a texture.
 *  \param texture The source texture.
 *  \param srcrect   A pointer to the source rectangle, or NULL for the entire
 *                   texture.
 *  \param dstrect   A pointer to the destination rectangle, or NULL for the
 *                   entire rendering target.
 *  \param angle    An angle in degrees that indicates the rotation that will be applied to dstrect, rotating it in a clockwise direction
 *  \param center   A pointer to a point indicating the point around which dstrect will be rotated (if NULL, rotation will be done around dstrect.w/2, dstrect.h/2).
 *  \param flip     An SDL_RendererFlip value stating which flipping actions should be performed on the texture
 *
 *  \return 0 on success, or -1 on error
 */
extern DECLSPEC int SDLCALL SDL_RenderCopyEx(SDL_Renderer * renderer,
                                           SDL_Texture * texture,
                                           const SDL_Rect * srcrect,
                                           const SDL_Rect * dstrect,
                                           const double angle,
                                           const SDL_Point *center,
                                           const SDL_RendererFlip flip);

/**
 *  \brief Read pixels from the current rendering target.
 *
 *  \param renderer The renderer from which pixels should be read.
 *  \param rect   A pointer to the rectangle to read, or NULL for the entire
 *                render target.
 *  \param format The desired format of the pixel data, or 0 to use the format
 *                of the rendering target
 *  \param pixels A pointer to be filled in with the pixel data
 *  \param pitch  The pitch of the pixels parameter.
 *
 *  \return 0 on success, or -1 if pixel reading is not supported.
 *
 *  \warning This is a very slow operation, and should not be used frequently.
 */
extern DECLSPEC int SDLCALL SDL_RenderReadPixels(SDL_Renderer * renderer,
                                                 const SDL_Rect * rect,
                                                 Uint32 format,
                                                 void *pixels, int pitch);

/**
 *  \brief Update the screen with rendering performed.
 */
extern DECLSPEC void SDLCALL SDL_RenderPresent(SDL_Renderer * renderer);

/**
 *  \brief Destroy the specified texture.
 *
 *  \sa SDL_CreateTexture()
 *  \sa SDL_CreateTextureFromSurface()
 */
extern DECLSPEC void SDLCALL SDL_DestroyTexture(SDL_Texture * texture);

/**
 *  \brief Destroy the rendering context for a window and free associated
 *         textures.
 *
 *  \sa SDL_CreateRenderer()
 */
extern DECLSPEC void SDLCALL SDL_DestroyRenderer(SDL_Renderer * renderer);

/**
 *  \brief Bind the texture to the current OpenGL/ES/ES2 context for use with
 *         OpenGL instructions.
 *
 *  \param texture  The SDL texture to bind
 *  \param texw     A pointer to a float that will be filled with the texture width
 *  \param texh     A pointer to a float that will be filled with the texture height
 *
 *  \return 0 on success, or -1 if the operation is not supported
 */
extern DECLSPEC int SDLCALL SDL_GL_BindTexture(SDL_Texture *texture, float *texw, float *texh);

/**
 *  \brief Unbind a texture from the current OpenGL/ES/ES2 context.
 *
 *  \param texture  The SDL texture to unbind
 *
 *  \return 0 on success, or -1 if the operation is not supported
 */
extern DECLSPEC int SDLCALL SDL_GL_UnbindTexture(SDL_Texture *texture);

/**
 *  \brief Get the CAMetalLayer associated with the given Metal renderer
 *
 *  \param renderer The renderer to query
 *
 *  \return CAMetalLayer* on success, or NULL if the renderer isn't a Metal renderer
 *
 *  \sa SDL_RenderGetMetalCommandEncoder()
 */
extern DECLSPEC void *SDLCALL SDL_RenderGetMetalLayer(SDL_Renderer * renderer);

/**
 *  \brief Get the Metal command encoder for the current frame
 *
 *  \param renderer The renderer to query
 *
 *  \return id<MTLRenderCommandEncoder> on success, or NULL if the renderer isn't a Metal renderer
 *
 *  \sa SDL_RenderGetMetalLayer()
 */
extern DECLSPEC void *SDLCALL SDL_RenderGetMetalCommandEncoder(SDL_Renderer * renderer);

/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"

#endif /* SDL_render_h_ */

/* vi: set ts=4 sw=4 expandtab: */


code:
#define SDL_REVISION "hg-12373:8feb5da6f2fb"
#define SDL_REVISION_NUMBER 12373

repo_name: orochi/nblood

license: mit


code:
/*
  Simple DirectMedia Layer
  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
*/

/**
 *  \file SDL_rwops.h
 *
 *  This file provides a general interface for SDL to read and write
 *  data streams.  It can easily be extended to files, memory, etc.
 */

#ifndef SDL_rwops_h_
#define SDL_rwops_h_

#include "SDL_stdinc.h"
#include "SDL_error.h"

#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif

/* RWops Types */
#define SDL_RWOPS_UNKNOWN   0U  /**< Unknown stream type */
#define SDL_RWOPS_WINFILE   1U  /**< Win32 file */
#define SDL_RWOPS_STDFILE   2U  /**< Stdio file */
#define SDL_RWOPS_JNIFILE   3U  /**< Android asset */
#define SDL_RWOPS_MEMORY    4U  /**< Memory stream */
#define SDL_RWOPS_MEMORY_RO 5U  /**< Read-Only memory stream */

/**
 * This is the read/write operation structure -- very basic.
 */
typedef struct SDL_RWops
{
    /**
     *  Return the size of the file in this rwops, or -1 if unknown
     */
    Sint64 (SDLCALL * size) (struct SDL_RWops * context);

    /**
     *  Seek to \c offset relative to \c whence, one of stdio's whence values:
     *  RW_SEEK_SET, RW_SEEK_CUR, RW_SEEK_END
     *
     *  \return the final offset in the data stream, or -1 on error.
     */
    Sint64 (SDLCALL * seek) (struct SDL_RWops * context, Sint64 offset,
                             int whence);

    /**
     *  Read up to \c maxnum objects each of size \c size from the data
     *  stream to the area pointed at by \c ptr.
     *
     *  \return the number of objects read, or 0 at error or end of file.
     */
    size_t (SDLCALL * read) (struct SDL_RWops * context, void *ptr,
                             size_t size, size_t maxnum);

    /**
     *  Write exactly \c num objects each of size \c size from the area
     *  pointed at by \c ptr to data stream.
     *
     *  \return the number of objects written, or 0 at error or end of file.
     */
    size_t (SDLCALL * write) (struct SDL_RWops * context, const void *ptr,
                              size_t size, size_t num);

    /**
     *  Close and free an allocated SDL_RWops structure.
     *
     *  \return 0 if successful or -1 on write error when flushing data.
     */
    int (SDLCALL * close) (struct SDL_RWops * context);

    Uint32 type;
    union
    {
#if defined(__ANDROID__)
        struct
        {
            void *fileNameRef;
            void *inputStreamRef;
            void *readableByteChannelRef;
            void *readMethod;
            void *assetFileDescriptorRef;
            long position;
            long size;
            long offset;
            int fd;
        } androidio;
#elif defined(__WIN32__)
        struct
        {
            SDL_bool append;
            void *h;
            struct
            {
                void *data;
                size_t size;
                size_t left;
            } buffer;
        } windowsio;
#endif

#ifdef HAVE_STDIO_H
        struct
        {
            SDL_bool autoclose;
            FILE *fp;
        } stdio;
#endif
        struct
        {
            Uint8 *base;
            Uint8 *here;
            Uint8 *stop;
        } mem;
        struct
        {
            void *data1;
            void *data2;
        } unknown;
    } hidden;

} SDL_RWops;

/**
 *  \name RWFrom functions
 *
 *  Functions to create SDL_RWops structures from various data streams.
 */
/* @{ */

extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromFile(const char *file,
                                                  const char *mode);

#ifdef HAVE_STDIO_H
extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromFP(FILE * fp,
                                                SDL_bool autoclose);
#else
extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromFP(void * fp,
                                                SDL_bool autoclose);
#endif

extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromMem(void *mem, int size);
extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromConstMem(const void *mem,
                                                      int size);

/* @} *//* RWFrom functions */

extern DECLSPEC SDL_RWops *SDLCALL SDL_AllocRW(void);
extern DECLSPEC void SDLCALL SDL_FreeRW(SDL_RWops * area);

#define RW_SEEK_SET 0       /**< Seek from the beginning of data */
#define RW_SEEK_CUR 1       /**< Seek relative to current read point */
#define RW_SEEK_END 2       /**< Seek relative to the end of data */

/**
 *  \name Read/write macros
 *
 *  Macros to easily read and write from an SDL_RWops structure.
 */
/* @{ */
#define SDL_RWsize(ctx)         (ctx)->size(ctx)
#define SDL_RWseek(ctx, offset, whence) (ctx)->seek(ctx, offset, whence)
#define SDL_RWtell(ctx)         (ctx)->seek(ctx, 0, RW_SEEK_CUR)
#define SDL_RWread(ctx, ptr, size, n)   (ctx)->read(ctx, ptr, size, n)
#define SDL_RWwrite(ctx, ptr, size, n)  (ctx)->write(ctx, ptr, size, n)
#define SDL_RWclose(ctx)        (ctx)->close(ctx)
/* @} *//* Read/write macros */

/**
 *  Load all the data from an SDL data stream.
 *
 *  The data is allocated with a zero byte at the end (null terminated)
 *
 *  If \c datasize is not NULL, it is filled with the size of the data read.
 *
 *  If \c freesrc is non-zero, the stream will be closed after being read.
 *
 *  The data should be freed with SDL_free().
 *
 *  \return the data, or NULL if there was an error.
 */
extern DECLSPEC void *SDLCALL SDL_LoadFile_RW(SDL_RWops * src, size_t *datasize,
                                                    int freesrc);

/**
 *  Load an entire file.
 *
 *  Convenience macro.
 */
#define SDL_LoadFile(file, datasize)   SDL_LoadFile_RW(SDL_RWFromFile(file, "rb"), datasize, 1)

/**
 *  \name Read endian functions
 *
 *  Read an item of the specified endianness and return in native format.
 */
/* @{ */
extern DECLSPEC Uint8 SDLCALL SDL_ReadU8(SDL_RWops * src);
extern DECLSPEC Uint16 SDLCALL SDL_ReadLE16(SDL_RWops * src);
extern DECLSPEC Uint16 SDLCALL SDL_ReadBE16(SDL_RWops * src);
extern DECLSPEC Uint32 SDLCALL SDL_ReadLE32(SDL_RWops * src);
extern DECLSPEC Uint32 SDLCALL SDL_ReadBE32(SDL_RWops * src);
extern DECLSPEC Uint64 SDLCALL SDL_ReadLE64(SDL_RWops * src);
extern DECLSPEC Uint64 SDLCALL SDL_ReadBE64(SDL_RWops * src);
/* @} *//* Read endian functions */

/**
 *  \name Write endian functions
 *
 *  Write an item of native format to the specified endianness.
 */
/* @{ */
extern DECLSPEC size_t SDLCALL SDL_WriteU8(SDL_RWops * dst, Uint8 value);
extern DECLSPEC size_t SDLCALL SDL_WriteLE16(SDL_RWops * dst, Uint16 value);
extern DECLSPEC size_t SDLCALL SDL_WriteBE16(SDL_RWops * dst, Uint16 value);
extern DECLSPEC size_t SDLCALL SDL_WriteLE32(SDL_RWops * dst, Uint32 value);
extern DECLSPEC size_t SDLCALL SDL_WriteBE32(SDL_RWops * dst, Uint32 value);
extern DECLSPEC size_t SDLCALL SDL_WriteLE64(SDL_RWops * dst, Uint64 value);
extern DECLSPEC size_t SDLCALL SDL_WriteBE64(SDL_RWops * dst, Uint64 value);
/* @} *//* Write endian functions */

/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"

#endif /* SDL_rwops_h_ */

/* vi: set ts=4 sw=4 expandtab: */


code:
/*
  Simple DirectMedia Layer
  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
*/

/**
 *  \file SDL_scancode.h
 *
 *  Defines keyboard scancodes.
 */

#ifndef SDL_scancode_h_
#define SDL_scancode_h_

#include "SDL_stdinc.h"

/**
 *  \brief The SDL keyboard scancode representation.
 *
 *  Values of this type are used to represent keyboard keys, among other places
 *  in the \link SDL_Keysym::scancode key.keysym.scancode \endlink field of the
 *  SDL_Event structure.
 *
 *  The values in this enumeration are based on the USB usage page standard:
 *  http://www.usb.org/developers/hidpage/Hut1_12v2.pdf
 */
typedef enum
{
    SDL_SCANCODE_UNKNOWN = 0,

    /**
     *  \name Usage page 0x07
     *
     *  These values are from usage page 0x07 (USB keyboard page).
     */
    /* @{ */

    SDL_SCANCODE_A = 4,
    SDL_SCANCODE_B = 5,
    SDL_SCANCODE_C = 6,
    SDL_SCANCODE_D = 7,
    SDL_SCANCODE_E = 8,
    SDL_SCANCODE_F = 9,
    SDL_SCANCODE_G = 10,
    SDL_SCANCODE_H = 11,
    SDL_SCANCODE_I = 12,
    SDL_SCANCODE_J = 13,
    SDL_SCANCODE_K = 14,
    SDL_SCANCODE_L = 15,
    SDL_SCANCODE_M = 16,
    SDL_SCANCODE_N = 17,
    SDL_SCANCODE_O = 18,
    SDL_SCANCODE_P = 19,
    SDL_SCANCODE_Q = 20,
    SDL_SCANCODE_R = 21,
    SDL_SCANCODE_S = 22,
    SDL_SCANCODE_T = 23,
    SDL_SCANCODE_U = 24,
    SDL_SCANCODE_V = 25,
    SDL_SCANCODE_W = 26,
    SDL_SCANCODE_X = 27,
    SDL_SCANCODE_Y = 28,
    SDL_SCANCODE_Z = 29,

    SDL_SCANCODE_1 = 30,
    SDL_SCANCODE_2 = 31,
    SDL_SCANCODE_3 = 32,
    SDL_SCANCODE_4 = 33,
    SDL_SCANCODE_5 = 34,
    SDL_SCANCODE_6 = 35,
    SDL_SCANCODE_7 = 36,
    SDL_SCANCODE_8 = 37,
    SDL_SCANCODE_9 = 38,
    SDL_SCANCODE_0 = 39,

    SDL_SCANCODE_RETURN = 40,
    SDL_SCANCODE_ESCAPE = 41,
    SDL_SCANCODE_BACKSPACE = 42,
    SDL_SCANCODE_TAB = 43,
    SDL_SCANCODE_SPACE = 44,

    SDL_SCANCODE_MINUS = 45,
    SDL_SCANCODE_EQUALS = 46,
    SDL_SCANCODE_LEFTBRACKET = 47,
    SDL_SCANCODE_RIGHTBRACKET = 48,
    SDL_SCANCODE_BACKSLASH = 49, /**< Located at the lower left of the return
                                  *   key on ISO keyboards and at the right end
                                  *   of the QWERTY row on ANSI keyboards.
                                  *   Produces REVERSE SOLIDUS (backslash) and
                                  *   VERTICAL LINE in a US layout, REVERSE
                                  *   SOLIDUS and VERTICAL LINE in a UK Mac
                                  *   layout, NUMBER SIGN and TILDE in a UK
                                  *   Windows layout, DOLLAR SIGN and POUND SIGN
                                  *   in a Swiss German layout, NUMBER SIGN and
                                  *   APOSTROPHE in a German layout, GRAVE
                                  *   ACCENT and POUND SIGN in a French Mac
                                  *   layout, and ASTERISK and MICRO SIGN in a
                                  *   French Windows layout.
                                  */
    SDL_SCANCODE_NONUSHASH = 50, /**< ISO USB keyboards actually use this code
                                  *   instead of 49 for the same key, but all
                                  *   OSes I've seen treat the two codes
                                  *   identically. So, as an implementor, unless
                                  *   your keyboard generates both of those
                                  *   codes and your OS treats them differently,
                                  *   you should generate SDL_SCANCODE_BACKSLASH
                                  *   instead of this code. As a user, you
                                  *   should not rely on this code because SDL
                                  *   will never generate it with most (all?)
                                  *   keyboards.
                                  */
    SDL_SCANCODE_SEMICOLON = 51,
    SDL_SCANCODE_APOSTROPHE = 52,
    SDL_SCANCODE_GRAVE = 53, /**< Located in the top left corner (on both ANSI
                              *   and ISO keyboards). Produces GRAVE ACCENT and
                              *   TILDE in a US Windows layout and in US and UK
                              *   Mac layouts on ANSI keyboards, GRAVE ACCENT
                              *   and NOT SIGN in a UK Windows layout, SECTION
                              *   SIGN and PLUS-MINUS SIGN in US and UK Mac
                              *   layouts on ISO keyboards, SECTION SIGN and
                              *   DEGREE SIGN in a Swiss German layout (Mac:
                              *   only on ISO keyboards), CIRCUMFLEX ACCENT and
                              *   DEGREE SIGN in a German layout (Mac: only on
                              *   ISO keyboards), SUPERSCRIPT TWO and TILDE in a
                              *   French Windows layout, COMMERCIAL AT and
                              *   NUMBER SIGN in a French Mac layout on ISO
                              *   keyboards, and LESS-THAN SIGN and GREATER-THAN
                              *   SIGN in a Swiss German, German, or French Mac
                              *   layout on ANSI keyboards.
                              */
    SDL_SCANCODE_COMMA = 54,
    SDL_SCANCODE_PERIOD = 55,
    SDL_SCANCODE_SLASH = 56,

    SDL_SCANCODE_CAPSLOCK = 57,

    SDL_SCANCODE_F1 = 58,
    SDL_SCANCODE_F2 = 59,
    SDL_SCANCODE_F3 = 60,
    SDL_SCANCODE_F4 = 61,
    SDL_SCANCODE_F5 = 62,
    SDL_SCANCODE_F6 = 63,
    SDL_SCANCODE_F7 = 64,
    SDL_SCANCODE_F8 = 65,
    SDL_SCANCODE_F9 = 66,
    SDL_SCANCODE_F10 = 67,
    SDL_SCANCODE_F11 = 68,
    SDL_SCANCODE_F12 = 69,

    SDL_SCANCODE_PRINTSCREEN = 70,
    SDL_SCANCODE_SCROLLLOCK = 71,
    SDL_SCANCODE_PAUSE = 72,
    SDL_SCANCODE_INSERT = 73, /**< insert on PC, help on some Mac keyboards (but
                                   does send code 73, not 117) */
    SDL_SCANCODE_HOME = 74,
    SDL_SCANCODE_PAGEUP = 75,
    SDL_SCANCODE_DELETE = 76,
    SDL_SCANCODE_END = 77,
    SDL_SCANCODE_PAGEDOWN = 78,
    SDL_SCANCODE_RIGHT = 79,
    SDL_SCANCODE_LEFT = 80,
    SDL_SCANCODE_DOWN = 81,
    SDL_SCANCODE_UP = 82,

    SDL_SCANCODE_NUMLOCKCLEAR = 83, /**< num lock on PC, clear on Mac keyboards
                                     */
    SDL_SCANCODE_KP_DIVIDE = 84,
    SDL_SCANCODE_KP_MULTIPLY = 85,
    SDL_SCANCODE_KP_MINUS = 86,
    SDL_SCANCODE_KP_PLUS = 87,
    SDL_SCANCODE_KP_ENTER = 88,
    SDL_SCANCODE_KP_1 = 89,
    SDL_SCANCODE_KP_2 = 90,
    SDL_SCANCODE_KP_3 = 91,
    SDL_SCANCODE_KP_4 = 92,
    SDL_SCANCODE_KP_5 = 93,
    SDL_SCANCODE_KP_6 = 94,
    SDL_SCANCODE_KP_7 = 95,
    SDL_SCANCODE_KP_8 = 96,
    SDL_SCANCODE_KP_9 = 97,
    SDL_SCANCODE_KP_0 = 98,
    SDL_SCANCODE_KP_PERIOD = 99,

    SDL_SCANCODE_NONUSBACKSLASH = 100, /**< This is the additional key that ISO
                                        *   keyboards have over ANSI ones,
                                        *   located between left shift and Y.
                                        *   Produces GRAVE ACCENT and TILDE in a
                                        *   US or UK Mac layout, REVERSE SOLIDUS
                                        *   (backslash) and VERTICAL LINE in a
                                        *   US or UK Windows layout, and
                                        *   LESS-THAN SIGN and GREATER-THAN SIGN
                                        *   in a Swiss German, German, or French
                                        *   layout. */
    SDL_SCANCODE_APPLICATION = 101, /**< windows contextual menu, compose */
    SDL_SCANCODE_POWER = 102, /**< The USB document says this is a status flag,
                               *   not a physical key - but some Mac keyboards
                               *   do have a power key. */
    SDL_SCANCODE_KP_EQUALS = 103,
    SDL_SCANCODE_F13 = 104,
    SDL_SCANCODE_F14 = 105,
    SDL_SCANCODE_F15 = 106,
    SDL_SCANCODE_F16 = 107,
    SDL_SCANCODE_F17 = 108,
    SDL_SCANCODE_F18 = 109,
    SDL_SCANCODE_F19 = 110,
    SDL_SCANCODE_F20 = 111,
    SDL_SCANCODE_F21 = 112,
    SDL_SCANCODE_F22 = 113,
    SDL_SCANCODE_F23 = 114,
    SDL_SCANCODE_F24 = 115,
    SDL_SCANCODE_EXECUTE = 116,
    SDL_SCANCODE_HELP = 117,
    SDL_SCANCODE_MENU = 118,
    SDL_SCANCODE_SELECT = 119,
    SDL_SCANCODE_STOP = 120,
    SDL_SCANCODE_AGAIN = 121,   /**< redo */
    SDL_SCANCODE_UNDO = 122,
    SDL_SCANCODE_CUT = 123,
    SDL_SCANCODE_COPY = 124,
    SDL_SCANCODE_PASTE = 125,
    SDL_SCANCODE_FIND = 126,
    SDL_SCANCODE_MUTE = 127,
    SDL_SCANCODE_VOLUMEUP = 128,
    SDL_SCANCODE_VOLUMEDOWN = 129,
/* not sure whether there's a reason to enable these */
/*     SDL_SCANCODE_LOCKINGCAPSLOCK = 130,  */
/*     SDL_SCANCODE_LOCKINGNUMLOCK = 131, */
/*     SDL_SCANCODE_LOCKINGSCROLLLOCK = 132, */
    SDL_SCANCODE_KP_COMMA = 133,
    SDL_SCANCODE_KP_EQUALSAS400 = 134,

    SDL_SCANCODE_INTERNATIONAL1 = 135, /**< used on Asian keyboards, see
                                            footnotes in USB doc */
    SDL_SCANCODE_INTERNATIONAL2 = 136,
    SDL_SCANCODE_INTERNATIONAL3 = 137, /**< Yen */
    SDL_SCANCODE_INTERNATIONAL4 = 138,
    SDL_SCANCODE_INTERNATIONAL5 = 139,
    SDL_SCANCODE_INTERNATIONAL6 = 140,
    SDL_SCANCODE_INTERNATIONAL7 = 141,
    SDL_SCANCODE_INTERNATIONAL8 = 142,
    SDL_SCANCODE_INTERNATIONAL9 = 143,
    SDL_SCANCODE_LANG1 = 144, /**< Hangul/English toggle */
    SDL_SCANCODE_LANG2 = 145, /**< Hanja conversion */
    SDL_SCANCODE_LANG3 = 146, /**< Katakana */
    SDL_SCANCODE_LANG4 = 147, /**< Hiragana */
    SDL_SCANCODE_LANG5 = 148, /**< Zenkaku/Hankaku */
    SDL_SCANCODE_LANG6 = 149, /**< reserved */
    SDL_SCANCODE_LANG7 = 150, /**< reserved */
    SDL_SCANCODE_LANG8 = 151, /**< reserved */
    SDL_SCANCODE_LANG9 = 152, /**< reserved */

    SDL_SCANCODE_ALTERASE = 153, /**< Erase-Eaze */
    SDL_SCANCODE_SYSREQ = 154,
    SDL_SCANCODE_CANCEL = 155,
    SDL_SCANCODE_CLEAR = 156,
    SDL_SCANCODE_PRIOR = 157,
    SDL_SCANCODE_RETURN2 = 158,
    SDL_SCANCODE_SEPARATOR = 159,
    SDL_SCANCODE_OUT = 160,
    SDL_SCANCODE_OPER = 161,
    SDL_SCANCODE_CLEARAGAIN = 162,
    SDL_SCANCODE_CRSEL = 163,
    SDL_SCANCODE_EXSEL = 164,

    SDL_SCANCODE_KP_00 = 176,
    SDL_SCANCODE_KP_000 = 177,
    SDL_SCANCODE_THOUSANDSSEPARATOR = 178,
    SDL_SCANCODE_DECIMALSEPARATOR = 179,
    SDL_SCANCODE_CURRENCYUNIT = 180,
    SDL_SCANCODE_CURRENCYSUBUNIT = 181,
    SDL_SCANCODE_KP_LEFTPAREN = 182,
    SDL_SCANCODE_KP_RIGHTPAREN = 183,
    SDL_SCANCODE_KP_LEFTBRACE = 184,
    SDL_SCANCODE_KP_RIGHTBRACE = 185,
    SDL_SCANCODE_KP_TAB = 186,
    SDL_SCANCODE_KP_BACKSPACE = 187,
    SDL_SCANCODE_KP_A = 188,
    SDL_SCANCODE_KP_B = 189,
    SDL_SCANCODE_KP_C = 190,
    SDL_SCANCODE_KP_D = 191,
    SDL_SCANCODE_KP_E = 192,
    SDL_SCANCODE_KP_F = 193,
    SDL_SCANCODE_KP_XOR = 194,
    SDL_SCANCODE_KP_POWER = 195,
    SDL_SCANCODE_KP_PERCENT = 196,
    SDL_SCANCODE_KP_LESS = 197,
    SDL_SCANCODE_KP_GREATER = 198,
    SDL_SCANCODE_KP_AMPERSAND = 199,
    SDL_SCANCODE_KP_DBLAMPERSAND = 200,
    SDL_SCANCODE_KP_VERTICALBAR = 201,
    SDL_SCANCODE_KP_DBLVERTICALBAR = 202,
    SDL_SCANCODE_KP_COLON = 203,
    SDL_SCANCODE_KP_HASH = 204,
    SDL_SCANCODE_KP_SPACE = 205,
    SDL_SCANCODE_KP_AT = 206,
    SDL_SCANCODE_KP_EXCLAM = 207,
    SDL_SCANCODE_KP_MEMSTORE = 208,
    SDL_SCANCODE_KP_MEMRECALL = 209,
    SDL_SCANCODE_KP_MEMCLEAR = 210,
    SDL_SCANCODE_KP_MEMADD = 211,
    SDL_SCANCODE_KP_MEMSUBTRACT = 212,
    SDL_SCANCODE_KP_MEMMULTIPLY = 213,
    SDL_SCANCODE_KP_MEMDIVIDE = 214,
    SDL_SCANCODE_KP_PLUSMINUS = 215,
    SDL_SCANCODE_KP_CLEAR = 216,
    SDL_SCANCODE_KP_CLEARENTRY = 217,
    SDL_SCANCODE_KP_BINARY = 218,
    SDL_SCANCODE_KP_OCTAL = 219,
    SDL_SCANCODE_KP_DECIMAL = 220,
    SDL_SCANCODE_KP_HEXADECIMAL = 221,

    SDL_SCANCODE_LCTRL = 224,
    SDL_SCANCODE_LSHIFT = 225,
    SDL_SCANCODE_LALT = 226, /**< alt, option */
    SDL_SCANCODE_LGUI = 227, /**< windows, command (apple), meta */
    SDL_SCANCODE_RCTRL = 228,
    SDL_SCANCODE_RSHIFT = 229,
    SDL_SCANCODE_RALT = 230, /**< alt gr, option */
    SDL_SCANCODE_RGUI = 231, /**< windows, command (apple), meta */

    SDL_SCANCODE_MODE = 257,    /**< I'm not sure if this is really not covered
                                 *   by any of the above, but since there's a
                                 *   special KMOD_MODE for it I'm adding it here
                                 */

    /* @} *//* Usage page 0x07 */

    /**
     *  \name Usage page 0x0C
     *
     *  These values are mapped from usage page 0x0C (USB consumer page).
     */
    /* @{ */

    SDL_SCANCODE_AUDIONEXT = 258,
    SDL_SCANCODE_AUDIOPREV = 259,
    SDL_SCANCODE_AUDIOSTOP = 260,
    SDL_SCANCODE_AUDIOPLAY = 261,
    SDL_SCANCODE_AUDIOMUTE = 262,
    SDL_SCANCODE_MEDIASELECT = 263,
    SDL_SCANCODE_WWW = 264,
    SDL_SCANCODE_MAIL = 265,
    SDL_SCANCODE_CALCULATOR = 266,
    SDL_SCANCODE_COMPUTER = 267,
    SDL_SCANCODE_AC_SEARCH = 268,
    SDL_SCANCODE_AC_HOME = 269,
    SDL_SCANCODE_AC_BACK = 270,
    SDL_SCANCODE_AC_FORWARD = 271,
    SDL_SCANCODE_AC_STOP = 272,
    SDL_SCANCODE_AC_REFRESH = 273,
    SDL_SCANCODE_AC_BOOKMARKS = 274,

    /* @} *//* Usage page 0x0C */

    /**
     *  \name Walther keys
     *
     *  These are values that Christian Walther added (for mac keyboard?).
     */
    /* @{ */

    SDL_SCANCODE_BRIGHTNESSDOWN = 275,
    SDL_SCANCODE_BRIGHTNESSUP = 276,
    SDL_SCANCODE_DISPLAYSWITCH = 277, /**< display mirroring/dual display
                                           switch, video mode switch */
    SDL_SCANCODE_KBDILLUMTOGGLE = 278,
    SDL_SCANCODE_KBDILLUMDOWN = 279,
    SDL_SCANCODE_KBDILLUMUP = 280,
    SDL_SCANCODE_EJECT = 281,
    SDL_SCANCODE_SLEEP = 282,

    SDL_SCANCODE_APP1 = 283,
    SDL_SCANCODE_APP2 = 284,

    /* @} *//* Walther keys */

    /**
     *  \name Usage page 0x0C (additional media keys)
     *
     *  These values are mapped from usage page 0x0C (USB consumer page).
     */
    /* @{ */

    SDL_SCANCODE_AUDIOREWIND = 285,
    SDL_SCANCODE_AUDIOFASTFORWARD = 286,

    /* @} *//* Usage page 0x0C (additional media keys) */

    /* Add any other keys here. */

    SDL_NUM_SCANCODES = 512 /**< not a key, just marks the number of scancodes
                                 for array bounds */
} SDL_Scancode;

#endif /* SDL_scancode_h_ */

/* vi: set ts=4 sw=4 expandtab: */


code:
/*
  Simple DirectMedia Layer
  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
*/

/**
 *  \file SDL_sensor.h
 *
 *  Include file for SDL sensor event handling
 *
 */

#ifndef _SDL_sensor_h
#define _SDL_sensor_h

#include "SDL_stdinc.h"
#include "SDL_error.h"

#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
/* *INDENT-OFF* */
extern "C" {
/* *INDENT-ON* */
#endif

/**
 *  \brief SDL_sensor.h
 *
 *  In order to use these functions, SDL_Init() must have been called
 *  with the ::SDL_INIT_SENSOR flag.  This causes SDL to scan the system
 *  for sensors, and load appropriate drivers.
 */

struct _SDL_Sensor;
typedef struct _SDL_Sensor SDL_Sensor;

/**
 * This is a unique ID for a sensor for the time it is connected to the system,
 * and is never reused for the lifetime of the application.
 *
 * The ID value starts at 0 and increments from there. The value -1 is an invalid ID.
 */
typedef Sint32 SDL_SensorID;

/* The different sensors defined by SDL
 *
 * Additional sensors may be available, using platform dependent semantics.
 *
 * Hare are the additional Android sensors:
 * https://developer.android.com/reference/android/hardware/SensorEvent.html#values
 */
typedef enum
{
    SDL_SENSOR_INVALID = -1,    /**< Returned for an invalid sensor */
    SDL_SENSOR_UNKNOWN,         /**< Unknown sensor type */
    SDL_SENSOR_ACCEL,           /**< Accelerometer */
    SDL_SENSOR_GYRO             /**< Gyroscope */
} SDL_SensorType;

/**
 * Accelerometer sensor
 *
 * The accelerometer returns the current acceleration in SI meters per
 * second squared. This includes gravity, so a device at rest will have
 * an acceleration of SDL_STANDARD_GRAVITY straight down.
 *
 * values[0]: Acceleration on the x axis
 * values[1]: Acceleration on the y axis
 * values[2]: Acceleration on the z axis
 *
 * For phones held in portrait mode, the axes are defined as follows:
 * -X ... +X : left ... right
 * -Y ... +Y : bottom ... top
 * -Z ... +Z : farther ... closer
 *
 * The axis data is not changed when the phone is rotated.
 *
 * \sa SDL_GetDisplayOrientation()
 */
#define SDL_STANDARD_GRAVITY    9.80665f

/**
 * Gyroscope sensor
 *
 * The gyroscope returns the current rate of rotation in radians per second.
 * The rotation is positive in the counter-clockwise direction. That is,
 * an observer looking from a positive location on one of the axes would
 * see positive rotation on that axis when it appeared to be rotating
 * counter-clockwise.
 *
 * values[0]: Angular speed around the x axis
 * values[1]: Angular speed around the y axis
 * values[2]: Angular speed around the z axis
 *
 * For phones held in portrait mode, the axes are defined as follows:
 * -X ... +X : left ... right
 * -Y ... +Y : bottom ... top
 * -Z ... +Z : farther ... closer
 *
 * The axis data is not changed when the phone is rotated.
 *
 * \sa SDL_GetDisplayOrientation()
 */

/* Function prototypes */

/**
 *  \brief Count the number of sensors attached to the system right now
 */
extern DECLSPEC int SDLCALL SDL_NumSensors(void);

/**
 *  \brief Get the implementation dependent name of a sensor.
 *
 *  This can be called before any sensors are opened.
 *
 *  \return The sensor name, or NULL if device_index is out of range.
 */
extern DECLSPEC const char *SDLCALL SDL_SensorGetDeviceName(int device_index);

/**
 *  \brief Get the type of a sensor.
 *
 *  This can be called before any sensors are opened.
 *
 *  \return The sensor type, or SDL_SENSOR_INVALID if device_index is out of range.
 */
extern DECLSPEC SDL_SensorType SDLCALL SDL_SensorGetDeviceType(int device_index);

/**
 *  \brief Get the platform dependent type of a sensor.
 *
 *  This can be called before any sensors are opened.
 *
 *  \return The sensor platform dependent type, or -1 if device_index is out of range.
 */
extern DECLSPEC int SDLCALL SDL_SensorGetDeviceNonPortableType(int device_index);

/**
 *  \brief Get the instance ID of a sensor.
 *
 *  This can be called before any sensors are opened.
 *
 *  \return The sensor instance ID, or -1 if device_index is out of range.
 */
extern DECLSPEC SDL_SensorID SDLCALL SDL_SensorGetDeviceInstanceID(int device_index);

/**
 *  \brief Open a sensor for use.
 *
 *  The index passed as an argument refers to the N'th sensor on the system.
 *
 *  \return A sensor identifier, or NULL if an error occurred.
 */
extern DECLSPEC SDL_Sensor *SDLCALL SDL_SensorOpen(int device_index);

/**
 * Return the SDL_Sensor associated with an instance id.
 */
extern DECLSPEC SDL_Sensor *SDLCALL SDL_SensorFromInstanceID(SDL_SensorID instance_id);

/**
 *  \brief Get the implementation dependent name of a sensor.
 *
 *  \return The sensor name, or NULL if the sensor is NULL.
 */
extern DECLSPEC const char *SDLCALL SDL_SensorGetName(SDL_Sensor *sensor);

/**
 *  \brief Get the type of a sensor.
 *
 *  This can be called before any sensors are opened.
 *
 *  \return The sensor type, or SDL_SENSOR_INVALID if the sensor is NULL.
 */
extern DECLSPEC SDL_SensorType SDLCALL SDL_SensorGetType(SDL_Sensor *sensor);

/**
 *  \brief Get the platform dependent type of a sensor.
 *
 *  This can be called before any sensors are opened.
 *
 *  \return The sensor platform dependent type, or -1 if the sensor is NULL.
 */
extern DECLSPEC int SDLCALL SDL_SensorGetNonPortableType(SDL_Sensor *sensor);

/**
 *  \brief Get the instance ID of a sensor.
 *
 *  This can be called before any sensors are opened.
 *
 *  \return The sensor instance ID, or -1 if the sensor is NULL.
 */
extern DECLSPEC SDL_SensorID SDLCALL SDL_SensorGetInstanceID(SDL_Sensor *sensor);

/**
 *  Get the current state of an opened sensor.
 *
 *  The number of values and interpretation of the data is sensor dependent.
 *
 *  \param sensor The sensor to query
 *  \param data A pointer filled with the current sensor state
 *  \param num_values The number of values to write to data
 *
 *  \return 0 or -1 if an error occurred.
 */
extern DECLSPEC int SDLCALL SDL_SensorGetData(SDL_Sensor * sensor, float *data, int num_values);

/**
 *  Close a sensor previously opened with SDL_SensorOpen()
 */
extern DECLSPEC void SDLCALL SDL_SensorClose(SDL_Sensor * sensor);

/**
 *  Update the current state of the open sensors.
 *
 *  This is called automatically by the event loop if sensor events are enabled.
 *
 *  This needs to be called from the thread that initialized the sensor subsystem.
 */
extern DECLSPEC void SDLCALL SDL_SensorUpdate(void);

/* Ends C function definitions when using C++ */
#ifdef __cplusplus
/* *INDENT-OFF* */
}
/* *INDENT-ON* */
#endif
#include "close_code.h"

#endif /* _SDL_sensor_h */

/* vi: set ts=4 sw=4 expandtab: */


code:
/*
  Simple DirectMedia Layer
  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
*/

#ifndef SDL_shape_h_
#define SDL_shape_h_

#include "SDL_stdinc.h"
#include "SDL_pixels.h"
#include "SDL_rect.h"
#include "SDL_surface.h"
#include "SDL_video.h"

#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif

/** \file SDL_shape.h
 *
 * Header file for the shaped window API.
 */

#define SDL_NONSHAPEABLE_WINDOW -1
#define SDL_INVALID_SHAPE_ARGUMENT -2
#define SDL_WINDOW_LACKS_SHAPE -3

/**
 *  \brief Create a window that can be shaped with the specified position, dimensions, and flags.
 *
 *  \param title The title of the window, in UTF-8 encoding.
 *  \param x     The x position of the window, ::SDL_WINDOWPOS_CENTERED, or
 *               ::SDL_WINDOWPOS_UNDEFINED.
 *  \param y     The y position of the window, ::SDL_WINDOWPOS_CENTERED, or
 *               ::SDL_WINDOWPOS_UNDEFINED.
 *  \param w     The width of the window.
 *  \param h     The height of the window.
 *  \param flags The flags for the window, a mask of SDL_WINDOW_BORDERLESS with any of the following:
 *               ::SDL_WINDOW_OPENGL,     ::SDL_WINDOW_INPUT_GRABBED,
 *               ::SDL_WINDOW_HIDDEN,     ::SDL_WINDOW_RESIZABLE,
 *               ::SDL_WINDOW_MAXIMIZED,  ::SDL_WINDOW_MINIMIZED,
 *       ::SDL_WINDOW_BORDERLESS is always set, and ::SDL_WINDOW_FULLSCREEN is always unset.
 *
 *  \return The window created, or NULL if window creation failed.
 *
 *  \sa SDL_DestroyWindow()
 */
extern DECLSPEC SDL_Window * SDLCALL SDL_CreateShapedWindow(const char *title,unsigned int x,unsigned int y,unsigned int w,unsigned int h,Uint32 flags);

/**
 * \brief Return whether the given window is a shaped window.
 *
 * \param window The window to query for being shaped.
 *
 * \return SDL_TRUE if the window is a window that can be shaped, SDL_FALSE if the window is unshaped or NULL.
 *
 * \sa SDL_CreateShapedWindow
 */
extern DECLSPEC SDL_bool SDLCALL SDL_IsShapedWindow(const SDL_Window *window);

/** \brief An enum denoting the specific type of contents present in an SDL_WindowShapeParams union. */
typedef enum {
    /** \brief The default mode, a binarized alpha cutoff of 1. */
    ShapeModeDefault,
    /** \brief A binarized alpha cutoff with a given integer value. */
    ShapeModeBinarizeAlpha,
    /** \brief A binarized alpha cutoff with a given integer value, but with the opposite comparison. */
    ShapeModeReverseBinarizeAlpha,
    /** \brief A color key is applied. */
    ShapeModeColorKey
} WindowShapeMode;

#define SDL_SHAPEMODEALPHA(mode) (mode == ShapeModeDefault || mode == ShapeModeBinarizeAlpha || mode == ShapeModeReverseBinarizeAlpha)

/** \brief A union containing parameters for shaped windows. */
typedef union {
    /** \brief A cutoff alpha value for binarization of the window shape's alpha channel. */
    Uint8 binarizationCutoff;
    SDL_Color colorKey;
} SDL_WindowShapeParams;

/** \brief A struct that tags the SDL_WindowShapeParams union with an enum describing the type of its contents. */
typedef struct SDL_WindowShapeMode {
    /** \brief The mode of these window-shape parameters. */
    WindowShapeMode mode;
    /** \brief Window-shape parameters. */
    SDL_WindowShapeParams parameters;
} SDL_WindowShapeMode;

/**
 * \brief Set the shape and parameters of a shaped window.
 *
 * \param window The shaped window whose parameters should be set.
 * \param shape A surface encoding the desired shape for the window.
 * \param shape_mode The parameters to set for the shaped window.
 *
 * \return 0 on success, SDL_INVALID_SHAPE_ARGUMENT on an invalid shape argument, or SDL_NONSHAPEABLE_WINDOW
 *           if the SDL_Window given does not reference a valid shaped window.
 *
 * \sa SDL_WindowShapeMode
 * \sa SDL_GetShapedWindowMode.
 */
extern DECLSPEC int SDLCALL SDL_SetWindowShape(SDL_Window *window,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode);

/**
 * \brief Get the shape parameters of a shaped window.
 *
 * \param window The shaped window whose parameters should be retrieved.
 * \param shape_mode An empty shape-mode structure to fill, or NULL to check whether the window has a shape.
 *
 * \return 0 if the window has a shape and, provided shape_mode was not NULL, shape_mode has been filled with the mode
 *           data, SDL_NONSHAPEABLE_WINDOW if the SDL_Window given is not a shaped window, or SDL_WINDOW_LACKS_SHAPE if
 *           the SDL_Window given is a shapeable window currently lacking a shape.
 *
 * \sa SDL_WindowShapeMode
 * \sa SDL_SetWindowShape
 */
extern DECLSPEC int SDLCALL SDL_GetShapedWindowMode(SDL_Window *window,SDL_WindowShapeMode *shape_mode);

/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"

#endif /* SDL_shape_h_ */


code:
/*
  Simple DirectMedia Layer
  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
*/

/**
 *  \file SDL_stdinc.h
 *
 *  This is a general header that includes C language support.
 */

#ifndef SDL_stdinc_h_
#define SDL_stdinc_h_

#include "SDL_config.h"

#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_STDIO_H
#include <stdio.h>
#endif
#if defined(STDC_HEADERS)
# include <stdlib.h>
# include <stddef.h>
# include <stdarg.h>
#else
# if defined(HAVE_STDLIB_H)
#  include <stdlib.h>
# elif defined(HAVE_MALLOC_H)
#  include <malloc.h>
# endif
# if defined(HAVE_STDDEF_H)
#  include <stddef.h>
# endif
# if defined(HAVE_STDARG_H)
#  include <stdarg.h>
# endif
#endif
#ifdef HAVE_STRING_H
# if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
#  include <memory.h>
# endif
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#ifdef HAVE_WCHAR_H
# include <wchar.h>
#endif
#if defined(HAVE_INTTYPES_H)
# include <inttypes.h>
#elif defined(HAVE_STDINT_H)
# include <stdint.h>
#endif
#ifdef HAVE_CTYPE_H
# include <ctype.h>
#endif
#ifdef HAVE_MATH_H
# if defined(__WINRT__)
/* Defining _USE_MATH_DEFINES is required to get M_PI to be defined on
   WinRT.  See http://msdn.microsoft.com/en-us/library/4hwaceh6.aspx
   for more information.
*/
#  define _USE_MATH_DEFINES
# endif
# include <math.h>
#endif
#ifdef HAVE_FLOAT_H
# include <float.h>
#endif
#if defined(HAVE_ALLOCA) && !defined(alloca)
# if defined(HAVE_ALLOCA_H)
#  include <alloca.h>
# elif defined(__GNUC__)
#  define alloca __builtin_alloca
# elif defined(_MSC_VER)
#  include <malloc.h>
#  define alloca _alloca
# elif defined(__WATCOMC__)
#  include <malloc.h>
# elif defined(__BORLANDC__)
#  include <malloc.h>
# elif defined(__DMC__)
#  include <stdlib.h>
# elif defined(__AIX__)
#pragma alloca
# elif defined(__MRC__)
void *alloca(unsigned);
# else
char *alloca();
# endif
#endif

/**
 *  The number of elements in an array.
 */
#define SDL_arraysize(array)    (sizeof(array)/sizeof(array[0]))
#define SDL_TABLESIZE(table)    SDL_arraysize(table)

/**
 *  Macro useful for building other macros with strings in them
 *
 *  e.g. #define LOG_ERROR(X) OutputDebugString(SDL_STRINGIFY_ARG(__FUNCTION__) ": " X "\n")
 */
#define SDL_STRINGIFY_ARG(arg)  #arg

/**
 *  \name Cast operators
 *
 *  Use proper C++ casts when compiled as C++ to be compatible with the option
 *  -Wold-style-cast of GCC (and -Werror=old-style-cast in GCC 4.2 and above).
 */
/* @{ */
#ifdef __cplusplus
#define SDL_reinterpret_cast(type, expression) reinterpret_cast<type>(expression)
#define SDL_static_cast(type, expression) static_cast<type>(expression)
#define SDL_const_cast(type, expression) const_cast<type>(expression)
#else
#define SDL_reinterpret_cast(type, expression) ((type)(expression))
#define SDL_static_cast(type, expression) ((type)(expression))
#define SDL_const_cast(type, expression) ((type)(expression))
#endif
/* @} *//* Cast operators */

/* Define a four character code as a Uint32 */
#define SDL_FOURCC(A, B, C, D) \
    ((SDL_static_cast(Uint32, SDL_static_cast(Uint8, (A))) << 0) | \
     (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (B))) << 8) | \
     (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (C))) << 16) | \
     (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (D))) << 24))

/**
 *  \name Basic data types
 */
/* @{ */

#ifdef __CC_ARM
/* ARM's compiler throws warnings if we use an enum: like "SDL_bool x = a < b;" */
#define SDL_FALSE 0
#define SDL_TRUE 1
typedef int SDL_bool;
#else
typedef enum
{
    SDL_FALSE = 0,
    SDL_TRUE = 1
} SDL_bool;
#endif

/**
 * \brief A signed 8-bit integer type.
 */
#define SDL_MAX_SINT8   ((Sint8)0x7F)           /* 127 */
#define SDL_MIN_SINT8   ((Sint8)(~0x7F))        /* -128 */
typedef int8_t Sint8;
/**
 * \brief An unsigned 8-bit integer type.
 */
#define SDL_MAX_UINT8   ((Uint8)0xFF)           /* 255 */
#define SDL_MIN_UINT8   ((Uint8)0x00)           /* 0 */
typedef uint8_t Uint8;
/**
 * \brief A signed 16-bit integer type.
 */
#define SDL_MAX_SINT16  ((Sint16)0x7FFF)        /* 32767 */
#define SDL_MIN_SINT16  ((Sint16)(~0x7FFF))     /* -32768 */
typedef int16_t Sint16;
/**
 * \brief An unsigned 16-bit integer type.
 */
#define SDL_MAX_UINT16  ((Uint16)0xFFFF)        /* 65535 */
#define SDL_MIN_UINT16  ((Uint16)0x0000)        /* 0 */
typedef uint16_t Uint16;
/**
 * \brief A signed 32-bit integer type.
 */
#define SDL_MAX_SINT32  ((Sint32)0x7FFFFFFF)    /* 2147483647 */
#define SDL_MIN_SINT32  ((Sint32)(~0x7FFFFFFF)) /* -2147483648 */
typedef int32_t Sint32;
/**
 * \brief An unsigned 32-bit integer type.
 */
#define SDL_MAX_UINT32  ((Uint32)0xFFFFFFFFu)   /* 4294967295 */
#define SDL_MIN_UINT32  ((Uint32)0x00000000)    /* 0 */
typedef uint32_t Uint32;

/**
 * \brief A signed 64-bit integer type.
 */
#define SDL_MAX_SINT64  ((Sint64)0x7FFFFFFFFFFFFFFFll)      /* 9223372036854775807 */
#define SDL_MIN_SINT64  ((Sint64)(~0x7FFFFFFFFFFFFFFFll))   /* -9223372036854775808 */
typedef int64_t Sint64;
/**
 * \brief An unsigned 64-bit integer type.
 */
#define SDL_MAX_UINT64  ((Uint64)0xFFFFFFFFFFFFFFFFull)     /* 18446744073709551615 */
#define SDL_MIN_UINT64  ((Uint64)(0x0000000000000000ull))   /* 0 */
typedef uint64_t Uint64;

/* @} *//* Basic data types */

/* Make sure we have macros for printing 64 bit values.
 * <stdint.h> should define these but this is not true all platforms.
 * (for example win32) */
#ifndef SDL_PRIs64
#ifdef PRIs64
#define SDL_PRIs64 PRIs64
#elif defined(__WIN32__)
#define SDL_PRIs64 "I64d"
#elif defined(__LINUX__) && defined(__LP64__)
#define SDL_PRIs64 "ld"
#else
#define SDL_PRIs64 "lld"
#endif
#endif
#ifndef SDL_PRIu64
#ifdef PRIu64
#define SDL_PRIu64 PRIu64
#elif defined(__WIN32__)
#define SDL_PRIu64 "I64u"
#elif defined(__LINUX__) && defined(__LP64__)
#define SDL_PRIu64 "lu"
#else
#define SDL_PRIu64 "llu"
#endif
#endif
#ifndef SDL_PRIx64
#ifdef PRIx64
#define SDL_PRIx64 PRIx64
#elif defined(__WIN32__)
#define SDL_PRIx64 "I64x"
#elif defined(__LINUX__) && defined(__LP64__)
#define SDL_PRIx64 "lx"
#else
#define SDL_PRIx64 "llx"
#endif
#endif
#ifndef SDL_PRIX64
#ifdef PRIX64
#define SDL_PRIX64 PRIX64
#elif defined(__WIN32__)
#define SDL_PRIX64 "I64X"
#elif defined(__LINUX__) && defined(__LP64__)
#define SDL_PRIX64 "lX"
#else
#define SDL_PRIX64 "llX"
#endif
#endif

/* Annotations to help code analysis tools */
#ifdef SDL_DISABLE_ANALYZE_MACROS
#define SDL_IN_BYTECAP(x)
#define SDL_INOUT_Z_CAP(x)
#define SDL_OUT_Z_CAP(x)
#define SDL_OUT_CAP(x)
#define SDL_OUT_BYTECAP(x)
#define SDL_OUT_Z_BYTECAP(x)
#define SDL_PRINTF_FORMAT_STRING
#define SDL_SCANF_FORMAT_STRING
#define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
#define SDL_SCANF_VARARG_FUNC( fmtargnumber )
#else
#if defined(_MSC_VER) && (_MSC_VER >= 1600) /* VS 2010 and above */
#include <sal.h>

#define SDL_IN_BYTECAP(x) _In_bytecount_(x)
#define SDL_INOUT_Z_CAP(x) _Inout_z_cap_(x)
#define SDL_OUT_Z_CAP(x) _Out_z_cap_(x)
#define SDL_OUT_CAP(x) _Out_cap_(x)
#define SDL_OUT_BYTECAP(x) _Out_bytecap_(x)
#define SDL_OUT_Z_BYTECAP(x) _Out_z_bytecap_(x)

#define SDL_PRINTF_FORMAT_STRING _Printf_format_string_
#define SDL_SCANF_FORMAT_STRING _Scanf_format_string_impl_
#else
#define SDL_IN_BYTECAP(x)
#define SDL_INOUT_Z_CAP(x)
#define SDL_OUT_Z_CAP(x)
#define SDL_OUT_CAP(x)
#define SDL_OUT_BYTECAP(x)
#define SDL_OUT_Z_BYTECAP(x)
#define SDL_PRINTF_FORMAT_STRING
#define SDL_SCANF_FORMAT_STRING
#endif
#if defined(__GNUC__)
#define SDL_PRINTF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __printf__, fmtargnumber, fmtargnumber+1 )))
#define SDL_SCANF_VARARG_FUNC( fmtargnumber ) __attribute__ (( format( __scanf__, fmtargnumber, fmtargnumber+1 )))
#else
#define SDL_PRINTF_VARARG_FUNC( fmtargnumber )
#define SDL_SCANF_VARARG_FUNC( fmtargnumber )
#endif
#endif /* SDL_DISABLE_ANALYZE_MACROS */

#define SDL_COMPILE_TIME_ASSERT(name, x)               \
       typedef int SDL_compile_time_assert_ ## name[(x) * 2 - 1]
/** \cond */
#ifndef DOXYGEN_SHOULD_IGNORE_THIS
SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
#endif /* DOXYGEN_SHOULD_IGNORE_THIS */
/** \endcond */

/* Check to make sure enums are the size of ints, for structure packing.
   For both Watcom C/C++ and Borland C/C++ the compiler option that makes
   enums having the size of an int must be enabled.
   This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
*/

/** \cond */
#ifndef DOXYGEN_SHOULD_IGNORE_THIS
#if !defined(__ANDROID__)
   /* TODO: include/SDL_stdinc.h:174: error: size of array 'SDL_dummy_enum' is negative */
typedef enum
{
    DUMMY_ENUM_VALUE
} SDL_DUMMY_ENUM;

SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
#endif
#endif /* DOXYGEN_SHOULD_IGNORE_THIS */
/** \endcond */

#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif

#ifdef HAVE_ALLOCA
#define SDL_stack_alloc(type, count)    (type*)alloca(sizeof(type)*(count))
#define SDL_stack_free(data)
#else
#define SDL_stack_alloc(type, count)    (type*)SDL_malloc(sizeof(type)*(count))
#define SDL_stack_free(data)            SDL_free(data)
#endif

extern DECLSPEC void *SDLCALL SDL_malloc(size_t size);
extern DECLSPEC void *SDLCALL SDL_calloc(size_t nmemb, size_t size);
extern DECLSPEC void *SDLCALL SDL_realloc(void *mem, size_t size);
extern DECLSPEC void SDLCALL SDL_free(void *mem);

typedef void *(SDLCALL *SDL_malloc_func)(size_t size);
typedef void *(SDLCALL *SDL_calloc_func)(size_t nmemb, size_t size);
typedef void *(SDLCALL *SDL_realloc_func)(void *mem, size_t size);
typedef void (SDLCALL *SDL_free_func)(void *mem);

/**
 *  \brief Get the current set of SDL memory functions
 */
extern DECLSPEC void SDLCALL SDL_GetMemoryFunctions(SDL_malloc_func *malloc_func,
                                                    SDL_calloc_func *calloc_func,
                                                    SDL_realloc_func *realloc_func,
                                                    SDL_free_func *free_func);

/**
 *  \brief Replace SDL's memory allocation functions with a custom set
 *
 *  \note If you are replacing SDL's memory functions, you should call
 *        SDL_GetNumAllocations() and be very careful if it returns non-zero.
 *        That means that your free function will be called with memory
 *        allocated by the previous memory allocation functions.
 */
extern DECLSPEC int SDLCALL SDL_SetMemoryFunctions(SDL_malloc_func malloc_func,
                                                   SDL_calloc_func calloc_func,
                                                   SDL_realloc_func realloc_func,
                                                   SDL_free_func free_func);

/**
 *  \brief Get the number of outstanding (unfreed) allocations
 */
extern DECLSPEC int SDLCALL SDL_GetNumAllocations(void);

extern DECLSPEC char *SDLCALL SDL_getenv(const char *name);
extern DECLSPEC int SDLCALL SDL_setenv(const char *name, const char *value, int overwrite);

extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size, int (*compare) (const void *, const void *));

extern DECLSPEC int SDLCALL SDL_abs(int x);

/* !!! FIXME: these have side effects. You probably shouldn't use them. */
/* !!! FIXME: Maybe we do forceinline functions of SDL_mini, SDL_minf, etc? */
#define SDL_min(x, y) (((x) < (y)) ? (x) : (y))
#define SDL_max(x, y) (((x) > (y)) ? (x) : (y))

extern DECLSPEC int SDLCALL SDL_isdigit(int x);
extern DECLSPEC int SDLCALL SDL_isspace(int x);
extern DECLSPEC int SDLCALL SDL_toupper(int x);
extern DECLSPEC int SDLCALL SDL_tolower(int x);

extern DECLSPEC void *SDLCALL SDL_memset(SDL_OUT_BYTECAP(len) void *dst, int c, size_t len);

#define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x)))
#define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x)))

/* Note that memset() is a byte assignment and this is a 32-bit assignment, so they're not directly equivalent. */
SDL_FORCE_INLINE void SDL_memset4(void *dst, Uint32 val, size_t dwords)
{
#if defined(__GNUC__) && defined(i386)
    int u0, u1, u2;
    __asm__ __volatile__ (
        "cld \n\t"
        "rep ; stosl \n\t"
        : "=&D" (u0), "=&a" (u1), "=&c" (u2)
        : "0" (dst), "1" (val), "2" (SDL_static_cast(Uint32, dwords))
        : "memory"
    );
#else
    size_t _n = (dwords + 3) / 4;
    Uint32 *_p = SDL_static_cast(Uint32 *, dst);
    Uint32 _val = (val);
    if (dwords == 0)
        return;
    switch (dwords % 4)
    {
        case 0: do {    *_p++ = _val;   /* fallthrough */
        case 3:         *_p++ = _val;   /* fallthrough */
        case 2:         *_p++ = _val;   /* fallthrough */
        case 1:         *_p++ = _val;   /* fallthrough */
        } while ( --_n );
    }
#endif
}

extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);

extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);

extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
extern DECLSPEC int SDLCALL SDL_wcscmp(const wchar_t *str1, const wchar_t *str2);

extern DECLSPEC size_t SDLCALL SDL_strlen(const char *str);
extern DECLSPEC size_t SDLCALL SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
extern DECLSPEC size_t SDLCALL SDL_utf8strlcpy(SDL_OUT_Z_CAP(dst_bytes) char *dst, const char *src, size_t dst_bytes);
extern DECLSPEC size_t SDLCALL SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen);
extern DECLSPEC char *SDLCALL SDL_strdup(const char *str);
extern DECLSPEC char *SDLCALL SDL_strrev(char *str);
extern DECLSPEC char *SDLCALL SDL_strupr(char *str);
extern DECLSPEC char *SDLCALL SDL_strlwr(char *str);
extern DECLSPEC char *SDLCALL SDL_strchr(const char *str, int c);
extern DECLSPEC char *SDLCALL SDL_strrchr(const char *str, int c);
extern DECLSPEC char *SDLCALL SDL_strstr(const char *haystack, const char *needle);
extern DECLSPEC size_t SDLCALL SDL_utf8strlen(const char *str);

extern DECLSPEC char *SDLCALL SDL_itoa(int value, char *str, int radix);
extern DECLSPEC char *SDLCALL SDL_uitoa(unsigned int value, char *str, int radix);
extern DECLSPEC char *SDLCALL SDL_ltoa(long value, char *str, int radix);
extern DECLSPEC char *SDLCALL SDL_ultoa(unsigned long value, char *str, int radix);
extern DECLSPEC char *SDLCALL SDL_lltoa(Sint64 value, char *str, int radix);
extern DECLSPEC char *SDLCALL SDL_ulltoa(Uint64 value, char *str, int radix);

extern DECLSPEC int SDLCALL SDL_atoi(const char *str);
extern DECLSPEC double SDLCALL SDL_atof(const char *str);
extern DECLSPEC long SDLCALL SDL_strtol(const char *str, char **endp, int base);
extern DECLSPEC unsigned long SDLCALL SDL_strtoul(const char *str, char **endp, int base);
extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *str, char **endp, int base);
extern DECLSPEC Uint64 SDLCALL SDL_strtoull(const char *str, char **endp, int base);
extern DECLSPEC double SDLCALL SDL_strtod(const char *str, char **endp);

extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2);
extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen);
extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2);
extern DECLSPEC int SDLCALL SDL_strncasecmp(const char *str1, const char *str2, size_t len);

extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, SDL_SCANF_FORMAT_STRING const char *fmt, ...) SDL_SCANF_VARARG_FUNC(2);
extern DECLSPEC int SDLCALL SDL_vsscanf(const char *text, const char *fmt, va_list ap);
extern DECLSPEC int SDLCALL SDL_snprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, SDL_PRINTF_FORMAT_STRING const char *fmt, ... ) SDL_PRINTF_VARARG_FUNC(3);
extern DECLSPEC int SDLCALL SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap);

#ifndef HAVE_M_PI
#ifndef M_PI
#define M_PI    3.14159265358979323846264338327950288   /**< pi */
#endif
#endif

extern DECLSPEC double SDLCALL SDL_acos(double x);
extern DECLSPEC float SDLCALL SDL_acosf(float x);
extern DECLSPEC double SDLCALL SDL_asin(double x);
extern DECLSPEC float SDLCALL SDL_asinf(float x);
extern DECLSPEC double SDLCALL SDL_atan(double x);
extern DECLSPEC float SDLCALL SDL_atanf(float x);
extern DECLSPEC double SDLCALL SDL_atan2(double x, double y);
extern DECLSPEC float SDLCALL SDL_atan2f(float x, float y);
extern DECLSPEC double SDLCALL SDL_ceil(double x);
extern DECLSPEC float SDLCALL SDL_ceilf(float x);
extern DECLSPEC double SDLCALL SDL_copysign(double x, double y);
extern DECLSPEC float SDLCALL SDL_copysignf(float x, float y);
extern DECLSPEC double SDLCALL SDL_cos(double x);
extern DECLSPEC float SDLCALL SDL_cosf(float x);
extern DECLSPEC double SDLCALL SDL_exp(double x);
extern DECLSPEC float SDLCALL SDL_expf(float x);
extern DECLSPEC double SDLCALL SDL_fabs(double x);
extern DECLSPEC float SDLCALL SDL_fabsf(float x);
extern DECLSPEC double SDLCALL SDL_floor(double x);
extern DECLSPEC float SDLCALL SDL_floorf(float x);
extern DECLSPEC double SDLCALL SDL_fmod(double x, double y);
extern DECLSPEC float SDLCALL SDL_fmodf(float x, float y);
extern DECLSPEC double SDLCALL SDL_log(double x);
extern DECLSPEC float SDLCALL SDL_logf(float x);
extern DECLSPEC double SDLCALL SDL_log10(double x);
extern DECLSPEC float SDLCALL SDL_log10f(float x);
extern DECLSPEC double SDLCALL SDL_pow(double x, double y);
extern DECLSPEC float SDLCALL SDL_powf(float x, float y);
extern DECLSPEC double SDLCALL SDL_scalbn(double x, int n);
extern DECLSPEC float SDLCALL SDL_scalbnf(float x, int n);
extern DECLSPEC double SDLCALL SDL_sin(double x);
extern DECLSPEC float SDLCALL SDL_sinf(float x);
extern DECLSPEC double SDLCALL SDL_sqrt(double x);
extern DECLSPEC float SDLCALL SDL_sqrtf(float x);
extern DECLSPEC double SDLCALL SDL_tan(double x);
extern DECLSPEC float SDLCALL SDL_tanf(float x);

/* The SDL implementation of iconv() returns these error codes */
#define SDL_ICONV_ERROR     (size_t)-1
#define SDL_ICONV_E2BIG     (size_t)-2
#define SDL_ICONV_EILSEQ    (size_t)-3
#define SDL_ICONV_EINVAL    (size_t)-4

/* SDL_iconv_* are now always real symbols/types, not macros or inlined. */
typedef struct _SDL_iconv_t *SDL_iconv_t;
extern DECLSPEC SDL_iconv_t SDLCALL SDL_iconv_open(const char *tocode,
                                                   const char *fromcode);
extern DECLSPEC int SDLCALL SDL_iconv_close(SDL_iconv_t cd);
extern DECLSPEC size_t SDLCALL SDL_iconv(SDL_iconv_t cd, const char **inbuf,
                                         size_t * inbytesleft, char **outbuf,
                                         size_t * outbytesleft);
/**
 *  This function converts a string between encodings in one pass, returning a
 *  string that must be freed with SDL_free() or NULL on error.
 */
extern DECLSPEC char *SDLCALL SDL_iconv_string(const char *tocode,
                                               const char *fromcode,
                                               const char *inbuf,
                                               size_t inbytesleft);
#define SDL_iconv_utf8_locale(S)    SDL_iconv_string("", "UTF-8", S, SDL_strlen(S)+1)
#define SDL_iconv_utf8_ucs2(S)      (Uint16 *)SDL_iconv_string("UCS-2-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)
#define SDL_iconv_utf8_ucs4(S)      (Uint32 *)SDL_iconv_string("UCS-4-INTERNAL", "UTF-8", S, SDL_strlen(S)+1)

/* force builds using Clang's static analysis tools to use literal C runtime
   here, since there are possibly tests that are ineffective otherwise. */
#if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS)
#define SDL_malloc malloc
#define SDL_calloc calloc
#define SDL_realloc realloc
#define SDL_free free
#define SDL_memset memset
#define SDL_memcpy memcpy
#define SDL_memmove memmove
#define SDL_memcmp memcmp
#define SDL_strlen strlen
#define SDL_strlcpy strlcpy
#define SDL_strlcat strlcat
#define SDL_strdup strdup
#define SDL_strchr strchr
#define SDL_strrchr strrchr
#define SDL_strstr strstr
#define SDL_strcmp strcmp
#define SDL_strncmp strncmp
#define SDL_strcasecmp strcasecmp
#define SDL_strncasecmp strncasecmp
#define SDL_sscanf sscanf
#define SDL_vsscanf vsscanf
#define SDL_snprintf snprintf
#define SDL_vsnprintf vsnprintf
#endif

SDL_FORCE_INLINE void *SDL_memcpy4(SDL_OUT_BYTECAP(dwords*4) void *dst, SDL_IN_BYTECAP(dwords*4) const void *src, size_t dwords)
{
    return SDL_memcpy(dst, src, dwords * 4);
}

/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"

#endif /* SDL_stdinc_h_ */

/* vi: set ts=4 sw=4 expandtab: */