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dvr/app/jni/SDL/include/SDL_surface.h
Simon 9138ea77ab Initial Commit of all Source
2016-03-03 22:28:59 +00:00

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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2011 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
/**
* \file SDL_surface.h
*
* Header file for ::SDL_surface definition and management functions.
*/
#ifndef _SDL_surface_h
#define _SDL_surface_h
#include "SDL_stdinc.h"
#include "SDL_pixels.h"
#include "SDL_rect.h"
#include "SDL_blendmode.h"
#include "SDL_rwops.h"
#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
/* *INDENT-OFF* */
extern "C" {
/* *INDENT-ON* */
#endif
/**
* \name Surface flags
*
* These are the currently supported flags for the ::SDL_surface.
*
* \internal
* Used internally (read-only).
*/
/*@{*/
#define SDL_PREALLOC 0x00000001 /**< Surface uses preallocated memory */
#define SDL_RLEACCEL 0x00000002 /**< Surface is RLE encoded */
#define SDL_DONTFREE 0x00000004 /**< Surface is referenced internally */
/*@}*//*Surface flags*/
/**
* Evaluates to true if the surface needs to be locked before access.
*/
#define SDL_MUSTLOCK(S) (((S)->flags & SDL_RLEACCEL) != 0)
/**
* \brief A collection of pixels used in software blitting.
*
* \note This structure should be treated as read-only, except for \c pixels,
* which, if not NULL, contains the raw pixel data for the surface.
*/
typedef struct SDL_Surface
{
Uint32 flags; /**< Read-only */
SDL_PixelFormat *format; /**< Read-only */
int w, h; /**< Read-only */
int pitch; /**< Read-only */
void *pixels; /**< Read-write */
/** Application data associated with the surface */
void *userdata; /**< Read-write */
/** information needed for surfaces requiring locks */
int locked; /**< Read-only */
void *lock_data; /**< Read-only */
/** clipping information */
SDL_Rect clip_rect; /**< Read-only */
/** info for fast blit mapping to other surfaces */
struct SDL_BlitMap *map; /**< Private */
/** Reference count -- used when freeing surface */
int refcount; /**< Read-mostly */
} SDL_Surface;
/**
* \brief The type of function used for surface blitting functions.
*/
typedef int (*SDL_blit) (struct SDL_Surface * src, SDL_Rect * srcrect,
struct SDL_Surface * dst, SDL_Rect * dstrect);
/**
* Allocate and free an RGB surface.
*
* If the depth is 4 or 8 bits, an empty palette is allocated for the surface.
* If the depth is greater than 8 bits, the pixel format is set using the
* flags '[RGB]mask'.
*
* If the function runs out of memory, it will return NULL.
*
* \param flags The \c flags are obsolete and should be set to 0.
*/
extern DECLSPEC SDL_Surface *SDLCALL SDL_CreateRGBSurface
(Uint32 flags, int width, int height, int depth,
Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask);
extern DECLSPEC SDL_Surface *SDLCALL SDL_CreateRGBSurfaceFrom(void *pixels,
int width,
int height,
int depth,
int pitch,
Uint32 Rmask,
Uint32 Gmask,
Uint32 Bmask,
Uint32 Amask);
extern DECLSPEC void SDLCALL SDL_FreeSurface(SDL_Surface * surface);
/**
* \brief Set the palette used by a surface.
*
* \return 0, or -1 if the surface format doesn't use a palette.
*
* \note A single palette can be shared with many surfaces.
*/
extern DECLSPEC int SDLCALL SDL_SetSurfacePalette(SDL_Surface * surface,
SDL_Palette * palette);
/**
* \brief Sets up a surface for directly accessing the pixels.
*
* Between calls to SDL_LockSurface() / SDL_UnlockSurface(), you can write
* to and read from \c surface->pixels, using the pixel format stored in
* \c surface->format. Once you are done accessing the surface, you should
* use SDL_UnlockSurface() to release it.
*
* Not all surfaces require locking. If SDL_MUSTLOCK(surface) evaluates
* to 0, then you can read and write to the surface at any time, and the
* pixel format of the surface will not change.
*
* No operating system or library calls should be made between lock/unlock
* pairs, as critical system locks may be held during this time.
*
* SDL_LockSurface() returns 0, or -1 if the surface couldn't be locked.
*
* \sa SDL_UnlockSurface()
*/
extern DECLSPEC int SDLCALL SDL_LockSurface(SDL_Surface * surface);
/** \sa SDL_LockSurface() */
extern DECLSPEC void SDLCALL SDL_UnlockSurface(SDL_Surface * surface);
/**
* Load a surface from a seekable SDL data stream (memory or file).
*
* If \c freesrc is non-zero, the stream will be closed after being read.
*
* The new surface should be freed with SDL_FreeSurface().
*
* \return the new surface, or NULL if there was an error.
*/
extern DECLSPEC SDL_Surface *SDLCALL SDL_LoadBMP_RW(SDL_RWops * src,
int freesrc);
/**
* Load a surface from a file.
*
* Convenience macro.
*/
#define SDL_LoadBMP(file) SDL_LoadBMP_RW(SDL_RWFromFile(file, "rb"), 1)
/**
* Save a surface to a seekable SDL data stream (memory or file).
*
* If \c freedst is non-zero, the stream will be closed after being written.
*
* \return 0 if successful or -1 if there was an error.
*/
extern DECLSPEC int SDLCALL SDL_SaveBMP_RW
(SDL_Surface * surface, SDL_RWops * dst, int freedst);
/**
* Save a surface to a file.
*
* Convenience macro.
*/
#define SDL_SaveBMP(surface, file) \
SDL_SaveBMP_RW(surface, SDL_RWFromFile(file, "wb"), 1)
/**
* \brief Sets the RLE acceleration hint for a surface.
*
* \return 0 on success, or -1 if the surface is not valid
*
* \note If RLE is enabled, colorkey and alpha blending blits are much faster,
* but the surface must be locked before directly accessing the pixels.
*/
extern DECLSPEC int SDLCALL SDL_SetSurfaceRLE(SDL_Surface * surface,
int flag);
/**
* \brief Sets the color key (transparent pixel) in a blittable surface.
*
* \param surface The surface to update
* \param flag Non-zero to enable colorkey and 0 to disable colorkey
* \param key The transparent pixel in the native surface format
*
* \return 0 on success, or -1 if the surface is not valid
*/
extern DECLSPEC int SDLCALL SDL_SetColorKey(SDL_Surface * surface,
int flag, Uint32 key);
/**
* \brief Gets the color key (transparent pixel) in a blittable surface.
*
* \param surface The surface to update
* \param key A pointer filled in with the transparent pixel in the native
* surface format
*
* \return 0 on success, or -1 if the surface is not valid or colorkey is not
* enabled.
*/
extern DECLSPEC int SDLCALL SDL_GetColorKey(SDL_Surface * surface,
Uint32 * key);
/**
* \brief Set an additional color value used in blit operations.
*
* \param surface The surface to update.
* \param r The red color value multiplied into blit operations.
* \param g The green color value multiplied into blit operations.
* \param b The blue color value multiplied into blit operations.
*
* \return 0 on success, or -1 if the surface is not valid.
*
* \sa SDL_GetSurfaceColorMod()
*/
extern DECLSPEC int SDLCALL SDL_SetSurfaceColorMod(SDL_Surface * surface,
Uint8 r, Uint8 g, Uint8 b);
/**
* \brief Get the additional color value used in blit operations.
*
* \param surface The surface 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 surface is not valid.
*
* \sa SDL_SetSurfaceColorMod()
*/
extern DECLSPEC int SDLCALL SDL_GetSurfaceColorMod(SDL_Surface * surface,
Uint8 * r, Uint8 * g,
Uint8 * b);
/**
* \brief Set an additional alpha value used in blit operations.
*
* \param surface The surface to update.
* \param alpha The alpha value multiplied into blit operations.
*
* \return 0 on success, or -1 if the surface is not valid.
*
* \sa SDL_GetSurfaceAlphaMod()
*/
extern DECLSPEC int SDLCALL SDL_SetSurfaceAlphaMod(SDL_Surface * surface,
Uint8 alpha);
/**
* \brief Get the additional alpha value used in blit operations.
*
* \param surface The surface to query.
* \param alpha A pointer filled in with the current alpha value.
*
* \return 0 on success, or -1 if the surface is not valid.
*
* \sa SDL_SetSurfaceAlphaMod()
*/
extern DECLSPEC int SDLCALL SDL_GetSurfaceAlphaMod(SDL_Surface * surface,
Uint8 * alpha);
/**
* \brief Set the blend mode used for blit operations.
*
* \param surface The surface to update.
* \param blendMode ::SDL_BlendMode to use for blit blending.
*
* \return 0 on success, or -1 if the parameters are not valid.
*
* \sa SDL_GetSurfaceBlendMode()
*/
extern DECLSPEC int SDLCALL SDL_SetSurfaceBlendMode(SDL_Surface * surface,
SDL_BlendMode blendMode);
/**
* \brief Get the blend mode used for blit operations.
*
* \param surface The surface to query.
* \param blendMode A pointer filled in with the current blend mode.
*
* \return 0 on success, or -1 if the surface is not valid.
*
* \sa SDL_SetSurfaceBlendMode()
*/
extern DECLSPEC int SDLCALL SDL_GetSurfaceBlendMode(SDL_Surface * surface,
SDL_BlendMode *blendMode);
/**
* Sets the clipping rectangle for the destination surface in a blit.
*
* If the clip rectangle is NULL, clipping will be disabled.
*
* If the clip rectangle doesn't intersect the surface, the function will
* return SDL_FALSE and blits will be completely clipped. Otherwise the
* function returns SDL_TRUE and blits to the surface will be clipped to
* the intersection of the surface area and the clipping rectangle.
*
* Note that blits are automatically clipped to the edges of the source
* and destination surfaces.
*/
extern DECLSPEC SDL_bool SDLCALL SDL_SetClipRect(SDL_Surface * surface,
const SDL_Rect * rect);
/**
* Gets the clipping rectangle for the destination surface in a blit.
*
* \c rect must be a pointer to a valid rectangle which will be filled
* with the correct values.
*/
extern DECLSPEC void SDLCALL SDL_GetClipRect(SDL_Surface * surface,
SDL_Rect * rect);
/**
* Creates a new surface of the specified format, and then copies and maps
* the given surface to it so the blit of the converted surface will be as
* fast as possible. If this function fails, it returns NULL.
*
* The \c flags parameter is passed to SDL_CreateRGBSurface() and has those
* semantics. You can also pass ::SDL_RLEACCEL in the flags parameter and
* SDL will try to RLE accelerate colorkey and alpha blits in the resulting
* surface.
*/
extern DECLSPEC SDL_Surface *SDLCALL SDL_ConvertSurface
(SDL_Surface * src, SDL_PixelFormat * fmt, Uint32 flags);
extern DECLSPEC SDL_Surface *SDLCALL SDL_ConvertSurfaceFormat
(SDL_Surface * src, Uint32 pixel_format, Uint32 flags);
/**
* \brief Copy a block of pixels of one format to another format
*/
extern DECLSPEC int SDLCALL SDL_ConvertPixels(int width, int height,
Uint32 src_format,
const void * src, int src_pitch,
Uint32 dst_format,
void * dst, int dst_pitch);
/**
* Performs a fast fill of the given rectangle with \c color.
*
* If \c rect is NULL, the whole surface will be filled with \c color.
*
* The color should be a pixel of the format used by the surface, and
* can be generated by the SDL_MapRGB() function.
*
* \return 0 on success, or -1 on error.
*/
extern DECLSPEC int SDLCALL SDL_FillRect
(SDL_Surface * dst, const SDL_Rect * rect, Uint32 color);
extern DECLSPEC int SDLCALL SDL_FillRects
(SDL_Surface * dst, const SDL_Rect * rects, int count, Uint32 color);
/**
* Performs a fast blit from the source surface to the destination surface.
*
* This assumes that the source and destination rectangles are
* the same size. If either \c srcrect or \c dstrect are NULL, the entire
* surface (\c src or \c dst) is copied. The final blit rectangles are saved
* in \c srcrect and \c dstrect after all clipping is performed.
*
* \return If the blit is successful, it returns 0, otherwise it returns -1.
*
* The blit function should not be called on a locked surface.
*
* The blit semantics for surfaces with and without alpha and colorkey
* are defined as follows:
* \verbatim
RGBA->RGB:
SDL_SRCALPHA set:
alpha-blend (using alpha-channel).
SDL_SRCCOLORKEY ignored.
SDL_SRCALPHA not set:
copy RGB.
if SDL_SRCCOLORKEY set, only copy the pixels matching the
RGB values of the source colour key, ignoring alpha in the
comparison.
RGB->RGBA:
SDL_SRCALPHA set:
alpha-blend (using the source per-surface alpha value);
set destination alpha to opaque.
SDL_SRCALPHA not set:
copy RGB, set destination alpha to source per-surface alpha value.
both:
if SDL_SRCCOLORKEY set, only copy the pixels matching the
source colour key.
RGBA->RGBA:
SDL_SRCALPHA set:
alpha-blend (using the source alpha channel) the RGB values;
leave destination alpha untouched. [Note: is this correct?]
SDL_SRCCOLORKEY ignored.
SDL_SRCALPHA not set:
copy all of RGBA to the destination.
if SDL_SRCCOLORKEY set, only copy the pixels matching the
RGB values of the source colour key, ignoring alpha in the
comparison.
RGB->RGB:
SDL_SRCALPHA set:
alpha-blend (using the source per-surface alpha value).
SDL_SRCALPHA not set:
copy RGB.
both:
if SDL_SRCCOLORKEY set, only copy the pixels matching the
source colour key.
\endverbatim
*
* You should call SDL_BlitSurface() unless you know exactly how SDL
* blitting works internally and how to use the other blit functions.
*/
#define SDL_BlitSurface SDL_UpperBlit
/**
* This is the public blit function, SDL_BlitSurface(), and it performs
* rectangle validation and clipping before passing it to SDL_LowerBlit()
*/
extern DECLSPEC int SDLCALL SDL_UpperBlit
(SDL_Surface * src, const SDL_Rect * srcrect,
SDL_Surface * dst, SDL_Rect * dstrect);
/**
* This is a semi-private blit function and it performs low-level surface
* blitting only.
*/
extern DECLSPEC int SDLCALL SDL_LowerBlit
(SDL_Surface * src, SDL_Rect * srcrect,
SDL_Surface * dst, SDL_Rect * dstrect);
/**
* \brief Perform a fast, low quality, stretch blit between two surfaces of the
* same pixel format.
*
* \note This function uses a static buffer, and is not thread-safe.
*/
extern DECLSPEC int SDLCALL SDL_SoftStretch(SDL_Surface * src,
const SDL_Rect * srcrect,
SDL_Surface * dst,
const SDL_Rect * dstrect);
/**
* \brief Perform a fast, low quality, stretch blit between two surfaces of the
* different pixel formats.
*
* \note This function calls SDL_SoftStretch or SDL_LowerBlit.
*/
extern DECLSPEC int SDLCALL SDL_BlitScaled
(SDL_Surface * src, const SDL_Rect * srcrect,
SDL_Surface * dst, const SDL_Rect * dstrect);
/* Ends C function definitions when using C++ */
#ifdef __cplusplus
/* *INDENT-OFF* */
}
/* *INDENT-ON* */
#endif
#include "close_code.h"
#endif /* _SDL_surface_h */
/* vi: set ts=4 sw=4 expandtab: */
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