From: jinhyung.jo Date: Wed, 10 Jul 2013 02:20:58 +0000 (+0900) Subject: maru_sdl_rotozoom : Remove unused rotozoom files X-Git-Tag: TizenStudio_2.0_p2.3~768^2~23^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c4311f76a56c0c3bea00c8d6567767034ec48b98;p=sdk%2Femulator%2Fqemu.git maru_sdl_rotozoom : Remove unused rotozoom files Remove unused maru_sdl_rotozoom.h and SDL_gfx dir. Now, scaling & rotation processing use the pixman library. Change-Id: I3b1617c1c64e8f5522e034a860d7b5aa31554627 Signed-off-by: Jinhyung Jo --- diff --git a/tizen/src/SDL_gfx/AUTHORS b/tizen/src/SDL_gfx/AUTHORS deleted file mode 100644 index 9ea070b..0000000 --- a/tizen/src/SDL_gfx/AUTHORS +++ /dev/null @@ -1 +0,0 @@ -Andreas Schiffler diff --git a/tizen/src/SDL_gfx/COPYING b/tizen/src/SDL_gfx/COPYING deleted file mode 100644 index 04bd5d6..0000000 --- a/tizen/src/SDL_gfx/COPYING +++ /dev/null @@ -1 +0,0 @@ -(C) A. Schiffler, ZLIB - see file LICENSE diff --git a/tizen/src/SDL_gfx/LICENSE b/tizen/src/SDL_gfx/LICENSE deleted file mode 100644 index f1eb9d8..0000000 --- a/tizen/src/SDL_gfx/LICENSE +++ /dev/null @@ -1,26 +0,0 @@ -/* - -Copyright (C) 2001-2011 Andreas Schiffler - -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. - -Andreas Schiffler -- aschiffler at ferzkopp dot net - -*/ \ No newline at end of file diff --git a/tizen/src/SDL_gfx/README b/tizen/src/SDL_gfx/README deleted file mode 100644 index cc8409d..0000000 --- a/tizen/src/SDL_gfx/README +++ /dev/null @@ -1,500 +0,0 @@ -/*! - - -\mainpage SDL_gfx - SDL-1.2 graphics drawing primitives, rotozoom and other supporting functions - - -\section contact_sec Contact and License - -Email aschiffler at ferzkopp dot net to contact the author or better check -author's homepage at http://www.ferzkopp.net for the most up-to-date -contact information. - -This library is licenced under the zlib License, see the file LICENSE for details. - - -\section intro_sec Introduction - -The SDL_gfx library evolved out of the SDL_gfxPrimitives code which -provided basic drawing routines such as lines, circles or polygons for -SDL Surfaces and adding a couple other useful functions for zooming -images for example and doing basic image processing on byte arrays. - -Note that SDL_gfx is compatible with SDL version 1.2 (not SDL2). - -The current components of the SDL_gfx library are: -- Graphic Primitives (SDL_gfxPrimitives.h, SDL_gfxPrimitives.c) -- Rotozoomer (SDL_rotozoom.h, SDL_rotozoom.c) -- Framerate control (SDL_framerate.h, SDL_framerate.c) -- MMX image filters (SDL_imageFilter.h, SDL_imageFilter.c) -- Custom Blit functions (SDL_gfxBlitFunc.h, SDL_gfxBlitFunc.c) -- Build-in 8x8 Font (SDL_gfxPrimitives_font.h) - - - -\subsection notes_gfx Notes on Graphics Primitives - -Care has been taken so that all routines are fully alpha-aware and can -blend any primitive onto the target surface if ALPHA<255. Surface depths -supported are 1,2,3 and 4 bytes per pixel. Surface locking is implemented -in each routine and the library should work well with hardware -accelerated surfaces. - -\htmlonly -
-\endhtmlonly - -Currently, The following Anti-Aliased drawing primitives are available: -- AA-line -- AA-polygon -- AA-circle -- AA-ellipse - -Note: All ___Color routines expect the color to be in the format 0xRRGGBBAA. - -\subsection notes_roto Notes on Rotozoomer - -The rotozoom code is not ASM-speed quality, but it should be fast enough -even for some realtime effects if the CPU is good or bitmaps small. -With interpolation the routines are typically used for pre-rendering stuff -in higher quality (i.e. smoothing) - that's also the reason why the API differs -from SDL_BlitRect() - as they create a new target surface each time rotozoom -is called. The final rendering speed is dependent on the target surface -size as it is beeing xy-scanned when rendering the new surface. - -\htmlonly -
-\endhtmlonly - -Note also that the smoothing toggle is dependent on the input surface bit -depth. 8bit surfaces will \b never be smoothed - only 32bit surfaces will. - -Note that surfaces of other bit depth then 8 and 32 will be converted -on the fly to a 32bit surface using a blit into a temporary surface. This -impacts performance somewhat. - -Smoothing (interpolation) flags work only on 32bit surfaces: -\verbatim - #define SMOOTHING_OFF 0 - #define SMOOTHING_ON 1 -\endverbatim - -\subsection notes_rate Notes on Framerate Manager - -The framerate functions are used to insert delays into the graphics loop -to maintain a constant framerate. - -The implementation is more sophisticated that the usual -\verbatim - SDL_Delay(1000/FPS); -\endverbatim -call since these functions keep track of the desired game time per frame -for a linearly interpolated sequence of future timing points of each frame. -This is done to avoid rounding errors from the inherent instability in the -delay generation and application. - -\htmlonly -
-\endhtmlonly - -i.e. the 100th frame of a game running at 50Hz will be accurately -2.00sec after the 1st frame (if the machine can keep up with the drawing). - -The functions return 0 or 'value' for sucess and -1 for error. All functions -use a pointer to a framerate-manager variable to operate. - - -\subsection notes_filter Notes on ImageFilters - -The imagefilter functions are a collection of MMX optimized routines that -operate on continuous buffers of bytes - typically greyscale images from -framegrabbers and such - performing functions such as image addition and -binarization. All functions (almost ... not the the convolution routines) -have a C implementation that is automatically used on systems without MMX -capabilities. - -The compiler flag -DUSE_MMX toggles the conditional compile of MMX assembly. -An assembler must be installed (i.e. "nasm"). - - -\subsection notes_blitters Notes on Custom Blitters - -The custom blitter functions provide (limited) support for surface -compositing - that is surfaces can be blitted together, and then -still blitted to the screen with transparency intact. - -\subsection platforms Supported Platforms - -\subsubsection platformlinux Unix/Linux - -The library compiles and is tested for a Linux target (gcc compiler) via the -the usual configure;make;make install sequence. - -\subsubsection platformwindows Windows - -A Win32 target is available (VisualC6/7/8/9, mingw32, xmingw32 cross-compiler). -The SDL_gfx.sln will open VS2010 (the old VS2008 .sln is also still included) -including express versions. - -See "Other Builds" for additional makefiles (may be out of date). - -When using the cross-compiler (available on the author's homepage, very -out of date), the build process generates .DLLs. You can use the command -line 'LIB.EXE' tool to generate VC6 compatible .LIB files for linking -purposes. - -\subsubsection platformosx Mac OSX - -The usual autotools build chain should be used. MacPorts or fink may -be required (that's what the author uses). - -Xcode is supported via templates. See "Other Builds" folder Xcode3+.zip - -this template only supports SDL_gfx and not the tests. For this template, the -Deployment Target (the lowest version to run on) is set to 10.5 and expects -the SDL.framework preinstalled in some default location -(either /Library/Frameworks, or ~/Library/Frameworks). - -Older targets are also reported to work (10.3+ native and Project Builder). - -\subsubsection platformqnx QNX - -QNX was reported to build (see .diff in "Other Builds"). - -\subsubsection platformzune Zune - -ZuneHD (WinCE 6 ARM) is reported to build (see OpenZDK in "Other Builds"). -Note that between rendering on the Zune's ARM CPU and constantly uploading -textures to the GPU, SDL_gfx is going to be slow. Also, the libc math -functions all use software FP emulation even when VFP floating point -support is turned on in the compiler, so there's extra overhead due to that -as well. - -\subsubsection platformothers Others - -Other platforms might work but have not been tested by the author. -Please check the file "INSTALL" as well as the folder "Other Builds". - -See also section "Installation" below for more build instructions. - -\section install_sec Installation - -\subsection unix Unix/Linux - -To compile the library your need the SDL 1.2 installed from source or -installed with the 'devel' RPM package. For example on Mandriva, run: -\verbatim - urpmi libSDL1.2-devel -\endverbatim - -Then run -\verbatim - ./autogen.sh # (optional, recommended) - ./configure - make - make install - ldconfig -\endverbatim - -to compile and install the library. The default location for the -installation is /usr/local/lib and /usr/local/include. The libary -path might need to be added to the file: - /etc/ld.so.conf - -Run the shell script 'nodebug.sh' before make, to patch the makefile -for optimized compilation: -\verbatim - ./autogen.sh # (optional, recommended) - ./configure - ./nodebug.sh - make - make install - ldconfig -\endverbatim - -Check the folder "Other Builds" for alternative makefiles. - -\subsection prep Build Prep - -Run autogen.sh or manually: -\verbatim - aclocal --force - libtoolize --force --copy - autoreconf -fvi -\endverbatim - -\subsection nommx No-MMX - -To build without MMX code enabled (i.e. PPC or for AMD64 architecture -which is missing pusha/popa): -\verbatim - ./configure --disable-mmx - make - make install -\endverbatim -i.e. to build on MacOSX 10.3+ use: -\verbatim - ./configure --disable-mmx && make -\endverbatim - -\subsection vs9 Windows (VC9, VS2010) - -Open SDL_gfx.sln solution file and review README. - -\subsection vs8 Windows (VC8, VS2008) - -Open SDL_gfx_VS2008.sln solution file and review README. - - -\subsection vc6 Windows (VC6/7) - -See folder Other Builds. - -To create a Windows DLL using VisualC6: -\verbatim - unzip -a VisualC6.zip - vcvars32.bat - copy VisualC/makefile - nmake -\endverbatim -or -\verbatim - unzip -a VisualC7.zip -\endverbatim -and open the project file. - - -\subsection wince WindowsCE - -See folder Other Builds. - -May need workaround for missing lrint. - - -\subsection cross Cross-Compilation - -To build using mingw32 on Win32, check the makefile contained in mingw.zip - -To create a Windows DLL using the xmingw32 cross-compiler: -\verbatim - cross-configure - cross-make - cross-make install -\endverbatim - -Make sure the -DBUILD_DLL is used (and only then) when creating the DLLs. -Make sure -DWIN32 is used when compiling the sources (creating or using -the DLLs. - -Specify the path to your cross-compiled 'sdl-config', and invoke -'./configure' with the '--host' and '--build' arguments. For example, -to cross-compile a .DLL from GNU/Linux: -\verbatim - SDL_CONFIG=/usr/local/cross-tools/i386-mingw32msvc/bin/sdl-config \ - ./configure --host=i586-mingw32msvc --build=i686-pc-linux-gnu - make - make install -\endverbatim - -\subsection qnx QNX - -To build on QNX6, patch first using: -\verbatim - patch -p0 -#endif - -#include -#include - -#include "SDL_rotozoom.h" - -/* ---- Internally used structures */ - -/*! -\brief A 32 bit RGBA pixel. -*/ -typedef struct tColorRGBA { - Uint8 r; - Uint8 g; - Uint8 b; - Uint8 a; -} tColorRGBA; - -/*! -\brief A 8bit Y/palette pixel. -*/ -typedef struct tColorY { - Uint8 y; -} tColorY; - -/*! -\brief Returns maximum of two numbers a and b. -*/ -#define MAX(a,b) (((a) > (b)) ? (a) : (b)) - -/*! -\brief Number of guard rows added to destination surfaces. - -This is a simple but effective workaround for observed issues. -These rows allocate extra memory and are then hidden from the surface. -Rows are added to the end of destination surfaces when they are allocated. -This catches any potential overflows which seem to happen with -just the right src image dimensions and scale/rotation and can lead -to a situation where the program can segfault. -*/ -#define GUARD_ROWS (2) - -/*! -\brief Lower limit of absolute zoom factor or rotation degrees. -*/ -#define VALUE_LIMIT 0.001 - -/*! -\brief Returns colorkey info for a surface -*/ -static Uint32 _colorkey(SDL_Surface *src) -{ - Uint32 key = 0; -#if (SDL_MINOR_VERSION == 3) - SDL_GetColorKey(src, &key); -#else - if (src) - { - key = src->format->colorkey; - } -#endif - return key; -} - - -/*! -\brief Internal 32 bit integer-factor averaging Shrinker. - -Shrinks 32 bit RGBA/ABGR 'src' surface to 'dst' surface. -Averages color and alpha values values of src pixels to calculate dst pixels. -Assumes src and dst surfaces are of 32 bit depth. -Assumes dst surface was allocated with the correct dimensions. - -\param src The surface to shrink (input). -\param dst The shrunken surface (output). -\param factorx The horizontal shrinking ratio. -\param factory The vertical shrinking ratio. - -\return 0 for success or -1 for error. -*/ -static int _shrinkSurfaceRGBA(SDL_Surface * src, SDL_Surface * dst, int factorx, int factory) -{ - int x, y, dx, dy, sgap, dgap, ra, ga, ba, aa; - int n_average; - tColorRGBA *sp, *osp, *oosp; - tColorRGBA *dp; - - /* - * Averaging integer shrink - */ - - /* Precalculate division factor */ - n_average = factorx*factory; - - /* - * Scan destination - */ - sp = (tColorRGBA *) src->pixels; - sgap = src->pitch - src->w * 4; - - dp = (tColorRGBA *) dst->pixels; - dgap = dst->pitch - dst->w * 4; - - for (y = 0; y < dst->h; y++) { - - osp=sp; - for (x = 0; x < dst->w; x++) { - - /* Trace out source box and accumulate */ - oosp=sp; - ra=ga=ba=aa=0; - for (dy=0; dy < factory; dy++) { - for (dx=0; dx < factorx; dx++) { - ra += sp->r; - ga += sp->g; - ba += sp->b; - aa += sp->a; - - sp++; - } - /* src dx loop */ - sp = (tColorRGBA *)((Uint8*)sp + (src->pitch - 4*factorx)); // next y - } - /* src dy loop */ - - /* next box-x */ - sp = (tColorRGBA *)((Uint8*)oosp + 4*factorx); - - /* Store result in destination */ - dp->r = ra/n_average; - dp->g = ga/n_average; - dp->b = ba/n_average; - dp->a = aa/n_average; - - /* - * Advance destination pointer - */ - dp++; - } - /* dst x loop */ - - /* next box-y */ - sp = (tColorRGBA *)((Uint8*)osp + src->pitch*factory); - - /* - * Advance destination pointers - */ - dp = (tColorRGBA *) ((Uint8 *) dp + dgap); - } - /* dst y loop */ - - return (0); -} - -/*! -\brief Internal 8 bit integer-factor averaging shrinker. - -Shrinks 8bit Y 'src' surface to 'dst' surface. -Averages color (brightness) values values of src pixels to calculate dst pixels. -Assumes src and dst surfaces are of 8 bit depth. -Assumes dst surface was allocated with the correct dimensions. - -\param src The surface to shrink (input). -\param dst The shrunken surface (output). -\param factorx The horizontal shrinking ratio. -\param factory The vertical shrinking ratio. - -\return 0 for success or -1 for error. -*/ -static int _shrinkSurfaceY(SDL_Surface * src, SDL_Surface * dst, int factorx, int factory) -{ - int x, y, dx, dy, sgap, dgap, a; - int n_average; - Uint8 *sp, *osp, *oosp; - Uint8 *dp; - - /* - * Averaging integer shrink - */ - - /* Precalculate division factor */ - n_average = factorx*factory; - - /* - * Scan destination - */ - sp = (Uint8 *) src->pixels; - sgap = src->pitch - src->w; - - dp = (Uint8 *) dst->pixels; - dgap = dst->pitch - dst->w; - - for (y = 0; y < dst->h; y++) { - - osp=sp; - for (x = 0; x < dst->w; x++) { - - /* Trace out source box and accumulate */ - oosp=sp; - a=0; - for (dy=0; dy < factory; dy++) { - for (dx=0; dx < factorx; dx++) { - a += (*sp); - /* next x */ - sp++; - } - /* end src dx loop */ - /* next y */ - sp = (Uint8 *)((Uint8*)sp + (src->pitch - factorx)); - } - /* end src dy loop */ - - /* next box-x */ - sp = (Uint8 *)((Uint8*)oosp + factorx); - - /* Store result in destination */ - *dp = a/n_average; - - /* - * Advance destination pointer - */ - dp++; - } - /* end dst x loop */ - - /* next box-y */ - sp = (Uint8 *)((Uint8*)osp + src->pitch*factory); - - /* - * Advance destination pointers - */ - dp = (Uint8 *)((Uint8 *)dp + dgap); - } - /* end dst y loop */ - - return (0); -} - -/*! -\brief Internal 32 bit Zoomer with optional anti-aliasing by bilinear interpolation. - -Zooms 32 bit RGBA/ABGR 'src' surface to 'dst' surface. -Assumes src and dst surfaces are of 32 bit depth. -Assumes dst surface was allocated with the correct dimensions. - -\param src The surface to zoom (input). -\param dst The zoomed surface (output). -\param flipx Flag indicating if the image should be horizontally flipped. -\param flipy Flag indicating if the image should be vertically flipped. -\param smooth Antialiasing flag; set to SMOOTHING_ON to enable. - -\return 0 for success or -1 for error. -*/ -static int _zoomSurfaceRGBA(SDL_Surface * src, SDL_Surface * dst, int flipx, int flipy, int smooth) -{ - int x, y, sx, sy, ssx, ssy, *sax, *say, *csax, *csay, *salast, csx, csy, ex, ey, cx, cy, sstep, sstepx, sstepy; - tColorRGBA *c00, *c01, *c10, *c11; - tColorRGBA *sp, *csp, *dp; - int spixelgap, spixelw, spixelh, dgap, t1, t2; - - /* - * Allocate memory for row/column increments - */ - if ((sax = (int *) malloc((dst->w + 1) * sizeof(Uint32))) == NULL) { - return (-1); - } - if ((say = (int *) malloc((dst->h + 1) * sizeof(Uint32))) == NULL) { - free(sax); - return (-1); - } - - /* - * Precalculate row increments - */ - spixelw = (src->w - 1); - spixelh = (src->h - 1); - if (smooth) { - sx = (int) (65536.0 * (float) spixelw / (float) (dst->w - 1)); - sy = (int) (65536.0 * (float) spixelh / (float) (dst->h - 1)); - } else { - sx = (int) (65536.0 * (float) (src->w) / (float) (dst->w)); - sy = (int) (65536.0 * (float) (src->h) / (float) (dst->h)); - } - - /* Maximum scaled source size */ - ssx = (src->w << 16) - 1; - ssy = (src->h << 16) - 1; - - /* Precalculate horizontal row increments */ - csx = 0; - csax = sax; - for (x = 0; x <= dst->w; x++) { - *csax = csx; - csax++; - csx += sx; - - /* Guard from overflows */ - if (csx > ssx) { - csx = ssx; - } - } - - /* Precalculate vertical row increments */ - csy = 0; - csay = say; - for (y = 0; y <= dst->h; y++) { - *csay = csy; - csay++; - csy += sy; - - /* Guard from overflows */ - if (csy > ssy) { - csy = ssy; - } - } - - sp = (tColorRGBA *) src->pixels; - dp = (tColorRGBA *) dst->pixels; - dgap = dst->pitch - dst->w * 4; - spixelgap = src->pitch/4; - - if (flipx) sp += spixelw; - if (flipy) sp += (spixelgap * spixelh); - - /* - * Switch between interpolating and non-interpolating code - */ - if (smooth) { - - /* - * Interpolating Zoom - */ - csay = say; - for (y = 0; y < dst->h; y++) { - csp = sp; - csax = sax; - for (x = 0; x < dst->w; x++) { - /* - * Setup color source pointers - */ - ex = (*csax & 0xffff); - ey = (*csay & 0xffff); - cx = (*csax >> 16); - cy = (*csay >> 16); - sstepx = cx < spixelw; - sstepy = cy < spixelh; - c00 = sp; - c01 = sp; - c10 = sp; - if (sstepy) { - if (flipy) { - c10 -= spixelgap; - } else { - c10 += spixelgap; - } - } - c11 = c10; - if (sstepx) { - if (flipx) { - c01--; - c11--; - } else { - c01++; - c11++; - } - } - - /* - * Draw and interpolate colors - */ - t1 = ((((c01->r - c00->r) * ex) >> 16) + c00->r) & 0xff; - t2 = ((((c11->r - c10->r) * ex) >> 16) + c10->r) & 0xff; - dp->r = (((t2 - t1) * ey) >> 16) + t1; - t1 = ((((c01->g - c00->g) * ex) >> 16) + c00->g) & 0xff; - t2 = ((((c11->g - c10->g) * ex) >> 16) + c10->g) & 0xff; - dp->g = (((t2 - t1) * ey) >> 16) + t1; - t1 = ((((c01->b - c00->b) * ex) >> 16) + c00->b) & 0xff; - t2 = ((((c11->b - c10->b) * ex) >> 16) + c10->b) & 0xff; - dp->b = (((t2 - t1) * ey) >> 16) + t1; - t1 = ((((c01->a - c00->a) * ex) >> 16) + c00->a) & 0xff; - t2 = ((((c11->a - c10->a) * ex) >> 16) + c10->a) & 0xff; - dp->a = (((t2 - t1) * ey) >> 16) + t1; - /* - * Advance source pointer x - */ - salast = csax; - csax++; - sstep = (*csax >> 16) - (*salast >> 16); - if (flipx) { - sp -= sstep; - } else { - sp += sstep; - } - - /* - * Advance destination pointer x - */ - dp++; - } - /* - * Advance source pointer y - */ - salast = csay; - csay++; - sstep = (*csay >> 16) - (*salast >> 16); - sstep *= spixelgap; - if (flipy) { - sp = csp - sstep; - } else { - sp = csp + sstep; - } - - /* - * Advance destination pointer y - */ - dp = (tColorRGBA *) ((Uint8 *) dp + dgap); - } - } else { - /* - * Non-Interpolating Zoom - */ - csay = say; - for (y = 0; y < dst->h; y++) { - csp = sp; - csax = sax; - for (x = 0; x < dst->w; x++) { - /* - * Draw - */ - *dp = *sp; - - /* - * Advance source pointer x - */ - salast = csax; - csax++; - sstep = (*csax >> 16) - (*salast >> 16); - if (flipx) sstep = -sstep; - sp += sstep; - - /* - * Advance destination pointer x - */ - dp++; - } - /* - * Advance source pointer y - */ - salast = csay; - csay++; - sstep = (*csay >> 16) - (*salast >> 16); - sstep *= spixelgap; - if (flipy) sstep = -sstep; - sp = csp + sstep; - - /* - * Advance destination pointer y - */ - dp = (tColorRGBA *) ((Uint8 *) dp + dgap); - } - } - - /* - * Remove temp arrays - */ - free(sax); - free(say); - - return (0); -} - -/*! - -\brief Internal 8 bit Zoomer without smoothing. - -Zooms 8bit palette/Y 'src' surface to 'dst' surface. -Assumes src and dst surfaces are of 8 bit depth. -Assumes dst surface was allocated with the correct dimensions. - -\param src The surface to zoom (input). -\param dst The zoomed surface (output). -\param flipx Flag indicating if the image should be horizontally flipped. -\param flipy Flag indicating if the image should be vertically flipped. - -\return 0 for success or -1 for error. -*/ -static int _zoomSurfaceY(SDL_Surface * src, SDL_Surface * dst, int flipx, int flipy) -{ - int x, y; - Uint32 *sax, *say, *csax, *csay; - int csx, csy; - Uint8 *sp, *dp, *csp; - int dgap; - - /* - * Allocate memory for row increments - */ - if ((sax = (Uint32 *) malloc((dst->w + 1) * sizeof(Uint32))) == NULL) { - return (-1); - } - if ((say = (Uint32 *) malloc((dst->h + 1) * sizeof(Uint32))) == NULL) { - free(sax); - return (-1); - } - - /* - * Pointer setup - */ - sp = csp = (Uint8 *) src->pixels; - dp = (Uint8 *) dst->pixels; - dgap = dst->pitch - dst->w; - - if (flipx) csp += (src->w-1); - if (flipy) csp = ( (Uint8*)csp + src->pitch*(src->h-1) ); - - /* - * Precalculate row increments - */ - csx = 0; - csax = sax; - for (x = 0; x < dst->w; x++) { - csx += src->w; - *csax = 0; - while (csx >= dst->w) { - csx -= dst->w; - (*csax)++; - } - (*csax) = (*csax) * (flipx ? -1 : 1); - csax++; - } - csy = 0; - csay = say; - for (y = 0; y < dst->h; y++) { - csy += src->h; - *csay = 0; - while (csy >= dst->h) { - csy -= dst->h; - (*csay)++; - } - (*csay) = (*csay) * (flipy ? -1 : 1); - csay++; - } - - /* - * Draw - */ - csay = say; - for (y = 0; y < dst->h; y++) { - csax = sax; - sp = csp; - for (x = 0; x < dst->w; x++) { - /* - * Draw - */ - *dp = *sp; - /* - * Advance source pointers - */ - sp += (*csax); - csax++; - /* - * Advance destination pointer - */ - dp++; - } - /* - * Advance source pointer (for row) - */ - csp += ((*csay) * src->pitch); - csay++; - - /* - * Advance destination pointers - */ - dp += dgap; - } - - /* - * Remove temp arrays - */ - free(sax); - free(say); - - return (0); -} - -/*! -\brief Internal 32 bit rotozoomer with optional anti-aliasing. - -Rotates and zooms 32 bit RGBA/ABGR 'src' surface to 'dst' surface based on the control -parameters by scanning the destination surface and applying optionally anti-aliasing -by bilinear interpolation. -Assumes src and dst surfaces are of 32 bit depth. -Assumes dst surface was allocated with the correct dimensions. - -\param src Source surface. -\param dst Destination surface. -\param cx Horizontal center coordinate. -\param cy Vertical center coordinate. -\param isin Integer version of sine of angle. -\param icos Integer version of cosine of angle. -\param flipx Flag indicating horizontal mirroring should be applied. -\param flipy Flag indicating vertical mirroring should be applied. -\param smooth Flag indicating anti-aliasing should be used. -*/ -static void _transformSurfaceRGBA(SDL_Surface * src, SDL_Surface * dst, int cx, int cy, int isin, int icos, int flipx, int flipy, int smooth) -{ - int x, y, t1, t2, dx, dy, xd, yd, sdx, sdy, ax, ay, ex, ey, sw, sh; - tColorRGBA c00, c01, c10, c11, cswap; - tColorRGBA *pc, *sp; - int gap; - - /* - * Variable setup - */ - xd = ((src->w - dst->w) << 15); - yd = ((src->h - dst->h) << 15); - ax = (cx << 16) - (icos * cx); - ay = (cy << 16) - (isin * cx); - sw = src->w - 1; - sh = src->h - 1; - pc = (tColorRGBA*) dst->pixels; - gap = dst->pitch - dst->w * 4; - - /* - * Switch between interpolating and non-interpolating code - */ - if (smooth) { - for (y = 0; y < dst->h; y++) { - dy = cy - y; - sdx = (ax + (isin * dy)) + xd; - sdy = (ay - (icos * dy)) + yd; - for (x = 0; x < dst->w; x++) { - dx = (sdx >> 16); - dy = (sdy >> 16); - if (flipx) dx = sw - dx; - if (flipy) dy = sh - dy; - if ((dx > -1) && (dy > -1) && (dx < (src->w-1)) && (dy < (src->h-1))) { - sp = (tColorRGBA *)src->pixels;; - sp += ((src->pitch/4) * dy); - sp += dx; - c00 = *sp; - sp += 1; - c01 = *sp; - sp += (src->pitch/4); - c11 = *sp; - sp -= 1; - c10 = *sp; - if (flipx) { - cswap = c00; c00=c01; c01=cswap; - cswap = c10; c10=c11; c11=cswap; - } - if (flipy) { - cswap = c00; c00=c10; c10=cswap; - cswap = c01; c01=c11; c11=cswap; - } - /* - * Interpolate colors - */ - ex = (sdx & 0xffff); - ey = (sdy & 0xffff); - t1 = ((((c01.r - c00.r) * ex) >> 16) + c00.r) & 0xff; - t2 = ((((c11.r - c10.r) * ex) >> 16) + c10.r) & 0xff; - pc->r = (((t2 - t1) * ey) >> 16) + t1; - t1 = ((((c01.g - c00.g) * ex) >> 16) + c00.g) & 0xff; - t2 = ((((c11.g - c10.g) * ex) >> 16) + c10.g) & 0xff; - pc->g = (((t2 - t1) * ey) >> 16) + t1; - t1 = ((((c01.b - c00.b) * ex) >> 16) + c00.b) & 0xff; - t2 = ((((c11.b - c10.b) * ex) >> 16) + c10.b) & 0xff; - pc->b = (((t2 - t1) * ey) >> 16) + t1; - t1 = ((((c01.a - c00.a) * ex) >> 16) + c00.a) & 0xff; - t2 = ((((c11.a - c10.a) * ex) >> 16) + c10.a) & 0xff; - pc->a = (((t2 - t1) * ey) >> 16) + t1; - } - sdx += icos; - sdy += isin; - pc++; - } - pc = (tColorRGBA *) ((Uint8 *) pc + gap); - } - } else { - for (y = 0; y < dst->h; y++) { - dy = cy - y; - sdx = (ax + (isin * dy)) + xd; - sdy = (ay - (icos * dy)) + yd; - for (x = 0; x < dst->w; x++) { - dx = (short) (sdx >> 16); - dy = (short) (sdy >> 16); - if (flipx) dx = (src->w-1)-dx; - if (flipy) dy = (src->h-1)-dy; - if ((dx >= 0) && (dy >= 0) && (dx < src->w) && (dy < src->h)) { - sp = (tColorRGBA *) ((Uint8 *) src->pixels + src->pitch * dy); - sp += dx; - *pc = *sp; - } - sdx += icos; - sdy += isin; - pc++; - } - pc = (tColorRGBA *) ((Uint8 *) pc + gap); - } - } -} - -/*! - -\brief Rotates and zooms 8 bit palette/Y 'src' surface to 'dst' surface without smoothing. - -Rotates and zooms 8 bit RGBA/ABGR 'src' surface to 'dst' surface based on the control -parameters by scanning the destination surface. -Assumes src and dst surfaces are of 8 bit depth. -Assumes dst surface was allocated with the correct dimensions. - -\param src Source surface. -\param dst Destination surface. -\param cx Horizontal center coordinate. -\param cy Vertical center coordinate. -\param isin Integer version of sine of angle. -\param icos Integer version of cosine of angle. -\param flipx Flag indicating horizontal mirroring should be applied. -\param flipy Flag indicating vertical mirroring should be applied. -*/ -static void transformSurfaceY(SDL_Surface * src, SDL_Surface * dst, int cx, int cy, int isin, int icos, int flipx, int flipy) -{ - int x, y, dx, dy, xd, yd, sdx, sdy, ax, ay, sw, sh; - tColorY *pc, *sp; - int gap; - - /* - * Variable setup - */ - xd = ((src->w - dst->w) << 15); - yd = ((src->h - dst->h) << 15); - ax = (cx << 16) - (icos * cx); - ay = (cy << 16) - (isin * cx); - sw = src->w - 1; - sh = src->h - 1; - pc = (tColorY*) dst->pixels; - gap = dst->pitch - dst->w; - /* - * Clear surface to colorkey - */ - memset(pc, (int)(_colorkey(src) & 0xff), dst->pitch * dst->h); - /* - * Iterate through destination surface - */ - for (y = 0; y < dst->h; y++) { - dy = cy - y; - sdx = (ax + (isin * dy)) + xd; - sdy = (ay - (icos * dy)) + yd; - for (x = 0; x < dst->w; x++) { - dx = (short) (sdx >> 16); - dy = (short) (sdy >> 16); - if (flipx) dx = (src->w-1)-dx; - if (flipy) dy = (src->h-1)-dy; - if ((dx >= 0) && (dy >= 0) && (dx < src->w) && (dy < src->h)) { - sp = (tColorY *) (src->pixels); - sp += (src->pitch * dy + dx); - *pc = *sp; - } - sdx += icos; - sdy += isin; - pc++; - } - pc += gap; - } -} - -/*! -\brief Rotates a 32 bit surface in increments of 90 degrees. - -Specialized 90 degree rotator which rotates a 'src' surface in 90 degree -increments clockwise returning a new surface. Faster than rotozoomer since -not scanning or interpolation takes place. Input surface must be 32 bit. -(code contributed by J. Schiller, improved by C. Allport and A. Schiffler) - -\param src Source surface to rotate. -\param numClockwiseTurns Number of clockwise 90 degree turns to apply to the source. - -\returns The new, rotated surface; or NULL for surfaces with incorrect input format. -*/ -SDL_Surface* rotateSurface90Degrees(SDL_Surface* src, int numClockwiseTurns) -{ - int row, col, newWidth, newHeight; - int bpp, src_ipr, dst_ipr; - SDL_Surface* dst; - Uint32* srcBuf; - Uint32* dstBuf; - - /* Has to be a valid surface pointer and only 32-bit surfaces (for now) */ - if (!src || src->format->BitsPerPixel != 32) { return NULL; } - - /* normalize numClockwiseTurns */ - while(numClockwiseTurns < 0) { numClockwiseTurns += 4; } - numClockwiseTurns = (numClockwiseTurns % 4); - - /* if it's even, our new width will be the same as the source surface */ - newWidth = (numClockwiseTurns % 2) ? (src->h) : (src->w); - newHeight = (numClockwiseTurns % 2) ? (src->w) : (src->h); - dst = SDL_CreateRGBSurface( src->flags, newWidth, newHeight, src->format->BitsPerPixel, - src->format->Rmask, - src->format->Gmask, - src->format->Bmask, - src->format->Amask); - if(!dst) { - return NULL; - } - - if (SDL_MUSTLOCK(dst)) { - SDL_LockSurface(dst); - } - if (SDL_MUSTLOCK(dst)) { - SDL_LockSurface(dst); - } - - /* Calculate int-per-row */ - bpp = src->format->BitsPerPixel / 8; - src_ipr = src->pitch / bpp; - dst_ipr = dst->pitch / bpp; - - switch(numClockwiseTurns) { - case 0: /* Make a copy of the surface */ - { - /* Unfortunately SDL_BlitSurface cannot be used to make a copy of the surface - since it does not preserve alpha. */ - - if (src->pitch == dst->pitch) { - /* If the pitch is the same for both surfaces, the memory can be copied all at once. */ - memcpy(dst->pixels, src->pixels, (src->h * src->pitch)); - } - else - { - /* If the pitch differs, copy each row separately */ - srcBuf = (Uint32*)(src->pixels); - dstBuf = (Uint32*)(dst->pixels); - for (row = 0; row < src->h; row++) { - memcpy(dstBuf, srcBuf, dst->w * bpp); - srcBuf += src_ipr; - dstBuf += dst_ipr; - } /* end for(col) */ - } /* end for(row) */ - } - break; - - /* rotate clockwise */ - case 1: /* rotated 90 degrees clockwise */ - { - for (row = 0; row < src->h; ++row) { - srcBuf = (Uint32*)(src->pixels) + (row * src_ipr); - dstBuf = (Uint32*)(dst->pixels) + (dst->w - row - 1); - for (col = 0; col < src->w; ++col) { - *dstBuf = *srcBuf; - ++srcBuf; - dstBuf += dst_ipr; - } - /* end for(col) */ - } - /* end for(row) */ - } - break; - - case 2: /* rotated 180 degrees clockwise */ - { - for (row = 0; row < src->h; ++row) { - srcBuf = (Uint32*)(src->pixels) + (row * src_ipr); - dstBuf = (Uint32*)(dst->pixels) + ((dst->h - row - 1) * dst_ipr) + (dst->w - 1); - for (col = 0; col < src->w; ++col) { - *dstBuf = *srcBuf; - ++srcBuf; - --dstBuf; - } - } - } - break; - - case 3: - { - for (row = 0; row < src->h; ++row) { - srcBuf = (Uint32*)(src->pixels) + (row * src_ipr); - dstBuf = (Uint32*)(dst->pixels) + row + ((dst->h - 1) * dst_ipr); - for (col = 0; col < src->w; ++col) { - *dstBuf = *srcBuf; - ++srcBuf; - dstBuf -= dst_ipr; - } - } - } - break; - } - /* end switch */ - - if (SDL_MUSTLOCK(src)) { - SDL_UnlockSurface(src); - } - if (SDL_MUSTLOCK(dst)) { - SDL_UnlockSurface(dst); - } - - return dst; -} - - -/*! -\brief Internal target surface sizing function for rotozooms with trig result return. - -\param width The source surface width. -\param height The source surface height. -\param angle The angle to rotate in degrees. -\param zoomx The horizontal scaling factor. -\param zoomy The vertical scaling factor. -\param dstwidth The calculated width of the destination surface. -\param dstheight The calculated height of the destination surface. -\param canglezoom The sine of the angle adjusted by the zoom factor. -\param sanglezoom The cosine of the angle adjusted by the zoom factor. - -*/ -static void _rotozoomSurfaceSizeTrig(int width, int height, double angle, double zoomx, double zoomy, - int *dstwidth, int *dstheight, - double *canglezoom, double *sanglezoom) -{ - double x, y, cx, cy, sx, sy; - double radangle; - int dstwidthhalf, dstheighthalf; - - /* - * Determine destination width and height by rotating a centered source box - */ - radangle = angle * (M_PI / 180.0); - *sanglezoom = sin(radangle); - *canglezoom = cos(radangle); - *sanglezoom *= zoomx; - *canglezoom *= zoomx; - x = (double)(width / 2); - y = (double)(height / 2); - cx = *canglezoom * x; - cy = *canglezoom * y; - sx = *sanglezoom * x; - sy = *sanglezoom * y; - - dstwidthhalf = MAX((int) - ceil(MAX(MAX(MAX(fabs(cx + sy), fabs(cx - sy)), fabs(-cx + sy)), fabs(-cx - sy))), 1); - dstheighthalf = MAX((int) - ceil(MAX(MAX(MAX(fabs(sx + cy), fabs(sx - cy)), fabs(-sx + cy)), fabs(-sx - cy))), 1); - *dstwidth = 2 * dstwidthhalf; - *dstheight = 2 * dstheighthalf; -} - -/*! -\brief Returns the size of the resulting target surface for a rotozoomSurfaceXY() call. - -\param width The source surface width. -\param height The source surface height. -\param angle The angle to rotate in degrees. -\param zoomx The horizontal scaling factor. -\param zoomy The vertical scaling factor. -\param dstwidth The calculated width of the rotozoomed destination surface. -\param dstheight The calculated height of the rotozoomed destination surface. -*/ -void rotozoomSurfaceSizeXY(int width, int height, double angle, double zoomx, double zoomy, int *dstwidth, int *dstheight) -{ - double dummy_sanglezoom, dummy_canglezoom; - - _rotozoomSurfaceSizeTrig(width, height, angle, zoomx, zoomy, dstwidth, dstheight, &dummy_sanglezoom, &dummy_canglezoom); -} - -/*! -\brief Returns the size of the resulting target surface for a rotozoomSurface() call. - -\param width The source surface width. -\param height The source surface height. -\param angle The angle to rotate in degrees. -\param zoom The scaling factor. -\param dstwidth The calculated width of the rotozoomed destination surface. -\param dstheight The calculated height of the rotozoomed destination surface. -*/ -void rotozoomSurfaceSize(int width, int height, double angle, double zoom, int *dstwidth, int *dstheight) -{ - double dummy_sanglezoom, dummy_canglezoom; - - _rotozoomSurfaceSizeTrig(width, height, angle, zoom, zoom, dstwidth, dstheight, &dummy_sanglezoom, &dummy_canglezoom); -} - -/*! -\brief Rotates and zooms a surface and optional anti-aliasing. - -Rotates and zoomes a 32bit or 8bit 'src' surface to newly created 'dst' surface. -'angle' is the rotation in degrees and 'zoom' a scaling factor. If 'smooth' is set -then the destination 32bit surface is anti-aliased. If the surface is not 8bit -or 32bit RGBA/ABGR it will be converted into a 32bit RGBA format on the fly. - -\param src The surface to rotozoom. -\param angle The angle to rotate in degrees. -\param zoom The scaling factor. -\param smooth Antialiasing flag; set to SMOOTHING_ON to enable. - -\return The new rotozoomed surface. -*/ -SDL_Surface *rotozoomSurface(SDL_Surface * src, double angle, double zoom, int smooth) -{ - return rotozoomSurfaceXY(src, angle, zoom, zoom, smooth); -} - -/*! -\brief Rotates and zooms a surface with different horizontal and vertival scaling factors and optional anti-aliasing. - -Rotates and zooms a 32bit or 8bit 'src' surface to newly created 'dst' surface. -'angle' is the rotation in degrees, 'zoomx and 'zoomy' scaling factors. If 'smooth' is set -then the destination 32bit surface is anti-aliased. If the surface is not 8bit -or 32bit RGBA/ABGR it will be converted into a 32bit RGBA format on the fly. - -\param src The surface to rotozoom. -\param angle The angle to rotate in degrees. -\param zoomx The horizontal scaling factor. -\param zoomy The vertical scaling factor. -\param smooth Antialiasing flag; set to SMOOTHING_ON to enable. - -\return The new rotozoomed surface. -*/ -SDL_Surface *rotozoomSurfaceXY(SDL_Surface * src, double angle, double zoomx, double zoomy, int smooth) -{ - SDL_Surface *rz_src; - SDL_Surface *rz_dst; - double zoominv; - double sanglezoom, canglezoom, sanglezoominv, canglezoominv; - int dstwidthhalf, dstwidth, dstheighthalf, dstheight; - int is32bit; - int i, src_converted; - int flipx,flipy; - Uint8 r,g,b; - Uint32 colorkey = 0; - int colorKeyAvailable = 0; - - /* - * Sanity check - */ - if (src == NULL) - return (NULL); - - if (src->flags & SDL_SRCCOLORKEY) - { - colorkey = _colorkey(src); - SDL_GetRGB(colorkey, src->format, &r, &g, &b); - colorKeyAvailable = 1; - } - /* - * Determine if source surface is 32bit or 8bit - */ - is32bit = (src->format->BitsPerPixel == 32); - if ((is32bit) || (src->format->BitsPerPixel == 8)) { - /* - * Use source surface 'as is' - */ - rz_src = src; - src_converted = 0; - } else { - /* - * New source surface is 32bit with a defined RGBA ordering - */ - rz_src = - SDL_CreateRGBSurface(SDL_SWSURFACE, src->w, src->h, 32, -#if SDL_BYTEORDER == SDL_LIL_ENDIAN - 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000 -#else - 0xff000000, 0x00ff0000, 0x0000ff00, 0x000000ff -#endif - ); - if(colorKeyAvailable) - SDL_SetColorKey(src, 0, 0); - - SDL_BlitSurface(src, NULL, rz_src, NULL); - - if(colorKeyAvailable) - SDL_SetColorKey(src, SDL_SRCCOLORKEY, colorkey); - src_converted = 1; - is32bit = 1; - } - - /* - * Sanity check zoom factor - */ - flipx = (zoomx<0.0); - if (flipx) zoomx=-zoomx; - flipy = (zoomy<0.0); - if (flipy) zoomy=-zoomy; - if (zoomx < VALUE_LIMIT) zoomx = VALUE_LIMIT; - if (zoomy < VALUE_LIMIT) zoomy = VALUE_LIMIT; - zoominv = 65536.0 / (zoomx * zoomx); - - /* - * Check if we have a rotozoom or just a zoom - */ - if (fabs(angle) > VALUE_LIMIT) { - - /* - * Angle!=0: full rotozoom - */ - /* - * ----------------------- - */ - - /* Determine target size */ - _rotozoomSurfaceSizeTrig(rz_src->w, rz_src->h, angle, zoomx, zoomy, &dstwidth, &dstheight, &canglezoom, &sanglezoom); - - /* - * Calculate target factors from sin/cos and zoom - */ - sanglezoominv = sanglezoom; - canglezoominv = canglezoom; - sanglezoominv *= zoominv; - canglezoominv *= zoominv; - - /* Calculate half size */ - dstwidthhalf = dstwidth / 2; - dstheighthalf = dstheight / 2; - - /* - * Alloc space to completely contain the rotated surface - */ - rz_dst = NULL; - if (is32bit) { - /* - * Target surface is 32bit with source RGBA/ABGR ordering - */ - rz_dst = - SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight + GUARD_ROWS, 32, - rz_src->format->Rmask, rz_src->format->Gmask, - rz_src->format->Bmask, rz_src->format->Amask); - } else { - /* - * Target surface is 8bit - */ - rz_dst = SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight + GUARD_ROWS, 8, 0, 0, 0, 0); - } - - /* Check target */ - if (rz_dst == NULL) - return NULL; - - /* Adjust for guard rows */ - rz_dst->h = dstheight; - - if (colorKeyAvailable == 1){ - colorkey = SDL_MapRGB(rz_dst->format, r, g, b); - - SDL_FillRect(rz_dst, NULL, colorkey ); - } - - /* - * Lock source surface - */ - if (SDL_MUSTLOCK(rz_src)) { - SDL_LockSurface(rz_src); - } - - /* - * Check which kind of surface we have - */ - if (is32bit) { - /* - * Call the 32bit transformation routine to do the rotation (using alpha) - */ - _transformSurfaceRGBA(rz_src, rz_dst, dstwidthhalf, dstheighthalf, - (int) (sanglezoominv), (int) (canglezoominv), - flipx, flipy, - smooth); - /* - * Turn on source-alpha support - */ - SDL_SetAlpha(rz_dst, SDL_SRCALPHA, 255); - SDL_SetColorKey(rz_dst, SDL_SRCCOLORKEY | SDL_RLEACCEL, _colorkey(rz_src)); - } else { - /* - * Copy palette and colorkey info - */ - for (i = 0; i < rz_src->format->palette->ncolors; i++) { - rz_dst->format->palette->colors[i] = rz_src->format->palette->colors[i]; - } - rz_dst->format->palette->ncolors = rz_src->format->palette->ncolors; - /* - * Call the 8bit transformation routine to do the rotation - */ - transformSurfaceY(rz_src, rz_dst, dstwidthhalf, dstheighthalf, - (int) (sanglezoominv), (int) (canglezoominv), - flipx, flipy); - SDL_SetColorKey(rz_dst, SDL_SRCCOLORKEY | SDL_RLEACCEL, _colorkey(rz_src)); - } - /* - * Unlock source surface - */ - if (SDL_MUSTLOCK(rz_src)) { - SDL_UnlockSurface(rz_src); - } - - } else { - - /* - * Angle=0: Just a zoom - */ - /* - * -------------------- - */ - - /* - * Calculate target size - */ - zoomSurfaceSize(rz_src->w, rz_src->h, zoomx, zoomy, &dstwidth, &dstheight); - - /* - * Alloc space to completely contain the zoomed surface - */ - rz_dst = NULL; - if (is32bit) { - /* - * Target surface is 32bit with source RGBA/ABGR ordering - */ - rz_dst = - SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight + GUARD_ROWS, 32, - rz_src->format->Rmask, rz_src->format->Gmask, - rz_src->format->Bmask, rz_src->format->Amask); - } else { - /* - * Target surface is 8bit - */ - rz_dst = SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight + GUARD_ROWS, 8, 0, 0, 0, 0); - } - - /* Check target */ - if (rz_dst == NULL) - return NULL; - - /* Adjust for guard rows */ - rz_dst->h = dstheight; - - if (colorKeyAvailable == 1){ - colorkey = SDL_MapRGB(rz_dst->format, r, g, b); - - SDL_FillRect(rz_dst, NULL, colorkey ); - } - - /* - * Lock source surface - */ - if (SDL_MUSTLOCK(rz_src)) { - SDL_LockSurface(rz_src); - } - - /* - * Check which kind of surface we have - */ - if (is32bit) { - /* - * Call the 32bit transformation routine to do the zooming (using alpha) - */ - _zoomSurfaceRGBA(rz_src, rz_dst, flipx, flipy, smooth); - - /* - * Turn on source-alpha support - */ - SDL_SetAlpha(rz_dst, SDL_SRCALPHA, 255); - SDL_SetColorKey(rz_dst, SDL_SRCCOLORKEY | SDL_RLEACCEL, _colorkey(rz_src)); - } else { - /* - * Copy palette and colorkey info - */ - for (i = 0; i < rz_src->format->palette->ncolors; i++) { - rz_dst->format->palette->colors[i] = rz_src->format->palette->colors[i]; - } - rz_dst->format->palette->ncolors = rz_src->format->palette->ncolors; - - /* - * Call the 8bit transformation routine to do the zooming - */ - _zoomSurfaceY(rz_src, rz_dst, flipx, flipy); - SDL_SetColorKey(rz_dst, SDL_SRCCOLORKEY | SDL_RLEACCEL, _colorkey(rz_src)); - } - - /* - * Unlock source surface - */ - if (SDL_MUSTLOCK(rz_src)) { - SDL_UnlockSurface(rz_src); - } - } - - /* - * Cleanup temp surface - */ - if (src_converted) { - SDL_FreeSurface(rz_src); - } - - /* - * Return destination surface - */ - return (rz_dst); -} - -/*! -\brief Calculates the size of the target surface for a zoomSurface() call. - -The minimum size of the target surface is 1. The input factors can be positive or negative. - -\param width The width of the source surface to zoom. -\param height The height of the source surface to zoom. -\param zoomx The horizontal zoom factor. -\param zoomy The vertical zoom factor. -\param dstwidth Pointer to an integer to store the calculated width of the zoomed target surface. -\param dstheight Pointer to an integer to store the calculated height of the zoomed target surface. -*/ -void zoomSurfaceSize(int width, int height, double zoomx, double zoomy, int *dstwidth, int *dstheight) -{ - /* - * Make zoom factors positive - */ - int flipx, flipy; - flipx = (zoomx<0.0); - if (flipx) zoomx = -zoomx; - flipy = (zoomy<0.0); - if (flipy) zoomy = -zoomy; - - /* - * Sanity check zoom factors - */ - if (zoomx < VALUE_LIMIT) { - zoomx = VALUE_LIMIT; - } - if (zoomy < VALUE_LIMIT) { - zoomy = VALUE_LIMIT; - } - - /* - * Calculate target size - */ - *dstwidth = (int) floor(((double) width * zoomx) + 0.5); - *dstheight = (int) floor(((double) height * zoomy) + 0.5); - if (*dstwidth < 1) { - *dstwidth = 1; - } - if (*dstheight < 1) { - *dstheight = 1; - } -} - -/*! -\brief Zoom a surface by independent horizontal and vertical factors with optional smoothing. - -Zooms a 32bit or 8bit 'src' surface to newly created 'dst' surface. -'zoomx' and 'zoomy' are scaling factors for width and height. If 'smooth' is on -then the destination 32bit surface is anti-aliased. If the surface is not 8bit -or 32bit RGBA/ABGR it will be converted into a 32bit RGBA format on the fly. -If zoom factors are negative, the image is flipped on the axes. - -\param src The surface to zoom. -\param zoomx The horizontal zoom factor. -\param zoomy The vertical zoom factor. -\param smooth Antialiasing flag; set to SMOOTHING_ON to enable. - -\return The new, zoomed surface. -*/ -SDL_Surface *zoomSurface(SDL_Surface * src, double zoomx, double zoomy, int smooth) -{ - SDL_Surface *rz_src; - SDL_Surface *rz_dst; - int dstwidth, dstheight; - int is32bit; - int i, src_converted; - int flipx, flipy; - - /* - * Sanity check - */ - if (src == NULL) - return (NULL); - - /* - * Determine if source surface is 32bit or 8bit - */ - is32bit = (src->format->BitsPerPixel == 32); - if ((is32bit) || (src->format->BitsPerPixel == 8)) { - /* - * Use source surface 'as is' - */ - rz_src = src; - src_converted = 0; - } else { - /* - * New source surface is 32bit with a defined RGBA ordering - */ - rz_src = - SDL_CreateRGBSurface(SDL_SWSURFACE, src->w, src->h, 32, -#if SDL_BYTEORDER == SDL_LIL_ENDIAN - 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000 -#else - 0xff000000, 0x00ff0000, 0x0000ff00, 0x000000ff -#endif - ); - if (rz_src == NULL) { - return NULL; - } - SDL_BlitSurface(src, NULL, rz_src, NULL); - src_converted = 1; - is32bit = 1; - } - - flipx = (zoomx<0.0); - if (flipx) zoomx = -zoomx; - flipy = (zoomy<0.0); - if (flipy) zoomy = -zoomy; - - /* Get size if target */ - zoomSurfaceSize(rz_src->w, rz_src->h, zoomx, zoomy, &dstwidth, &dstheight); - - /* - * Alloc space to completely contain the zoomed surface - */ - rz_dst = NULL; - if (is32bit) { - /* - * Target surface is 32bit with source RGBA/ABGR ordering - */ - rz_dst = - SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight + GUARD_ROWS, 32, - rz_src->format->Rmask, rz_src->format->Gmask, - rz_src->format->Bmask, rz_src->format->Amask); - } else { - /* - * Target surface is 8bit - */ - rz_dst = SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight + GUARD_ROWS, 8, 0, 0, 0, 0); - } - - /* Check target */ - if (rz_dst == NULL) { - /* - * Cleanup temp surface - */ - if (src_converted) { - SDL_FreeSurface(rz_src); - } - return NULL; - } - - /* Adjust for guard rows */ - rz_dst->h = dstheight; - - /* - * Lock source surface - */ - if (SDL_MUSTLOCK(rz_src)) { - SDL_LockSurface(rz_src); - } - - /* - * Check which kind of surface we have - */ - if (is32bit) { - /* - * Call the 32bit transformation routine to do the zooming (using alpha) - */ - _zoomSurfaceRGBA(rz_src, rz_dst, flipx, flipy, smooth); - /* - * Turn on source-alpha support - */ - SDL_SetAlpha(rz_dst, SDL_SRCALPHA, 255); - } else { - /* - * Copy palette and colorkey info - */ - for (i = 0; i < rz_src->format->palette->ncolors; i++) { - rz_dst->format->palette->colors[i] = rz_src->format->palette->colors[i]; - } - rz_dst->format->palette->ncolors = rz_src->format->palette->ncolors; - /* - * Call the 8bit transformation routine to do the zooming - */ - _zoomSurfaceY(rz_src, rz_dst, flipx, flipy); - SDL_SetColorKey(rz_dst, SDL_SRCCOLORKEY | SDL_RLEACCEL, _colorkey(rz_src)); - } - /* - * Unlock source surface - */ - if (SDL_MUSTLOCK(rz_src)) { - SDL_UnlockSurface(rz_src); - } - - /* - * Cleanup temp surface - */ - if (src_converted) { - SDL_FreeSurface(rz_src); - } - - /* - * Return destination surface - */ - return (rz_dst); -} - -/*! -\brief Shrink a surface by an integer ratio using averaging. - -Shrinks a 32bit or 8bit 'src' surface to a newly created 'dst' surface. -'factorx' and 'factory' are the shrinking ratios (i.e. 2=1/2 the size, -3=1/3 the size, etc.) The destination surface is antialiased by averaging -the source box RGBA or Y information. If the surface is not 8bit -or 32bit RGBA/ABGR it will be converted into a 32bit RGBA format on the fly. -The input surface is not modified. The output surface is newly allocated. - -\param src The surface to shrink. -\param factorx The horizontal shrinking ratio. -\param factory The vertical shrinking ratio. - -\return The new, shrunken surface. -*/ -/*@null@*/ -SDL_Surface *shrinkSurface(SDL_Surface *src, int factorx, int factory) -{ - int result; - SDL_Surface *rz_src; - SDL_Surface *rz_dst = NULL; - int dstwidth, dstheight; - int is32bit; - int i, src_converted; - int haveError = 0; - - /* - * Sanity check - */ - if (src == NULL) { - return (NULL); - } - - /* - * Determine if source surface is 32bit or 8bit - */ - is32bit = (src->format->BitsPerPixel == 32); - if ((is32bit) || (src->format->BitsPerPixel == 8)) { - /* - * Use source surface 'as is' - */ - rz_src = src; - src_converted = 0; - } else { - /* - * New source surface is 32bit with a defined RGBA ordering - */ - rz_src = SDL_CreateRGBSurface(SDL_SWSURFACE, src->w, src->h, 32, -#if SDL_BYTEORDER == SDL_LIL_ENDIAN - 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000 -#else - 0xff000000, 0x00ff0000, 0x0000ff00, 0x000000ff -#endif - ); - if (rz_src==NULL) { - haveError = 1; - goto exitShrinkSurface; - } - - SDL_BlitSurface(src, NULL, rz_src, NULL); - src_converted = 1; - is32bit = 1; - } - - /* - * Lock the surface - */ - if (SDL_MUSTLOCK(rz_src)) { - if (SDL_LockSurface(rz_src) < 0) { - haveError = 1; - goto exitShrinkSurface; - } - } - - /* Get size for target */ - dstwidth=rz_src->w/factorx; - while (dstwidth*factorx>rz_src->w) { dstwidth--; } - dstheight=rz_src->h/factory; - while (dstheight*factory>rz_src->h) { dstheight--; } - - /* - * Alloc space to completely contain the shrunken surface - * (with added guard rows) - */ - if (is32bit==1) { - /* - * Target surface is 32bit with source RGBA/ABGR ordering - */ - rz_dst = - SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight + GUARD_ROWS, 32, - rz_src->format->Rmask, rz_src->format->Gmask, - rz_src->format->Bmask, rz_src->format->Amask); - } else { - /* - * Target surface is 8bit - */ - rz_dst = SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight + GUARD_ROWS, 8, 0, 0, 0, 0); - } - - /* Check target */ - if (rz_dst == NULL) { - haveError = 1; - goto exitShrinkSurface; - } - - /* Adjust for guard rows */ - rz_dst->h = dstheight; - - /* - * Check which kind of surface we have - */ - if (is32bit==1) { - /* - * Call the 32bit transformation routine to do the shrinking (using alpha) - */ - result = _shrinkSurfaceRGBA(rz_src, rz_dst, factorx, factory); - if ((result!=0) || (rz_dst==NULL)) { - haveError = 1; - goto exitShrinkSurface; - } - - /* - * Turn on source-alpha support - */ - result = SDL_SetAlpha(rz_dst, SDL_SRCALPHA, 255); - if (result!=0) { - haveError = 1; - goto exitShrinkSurface; - } - } else { - /* - * Copy palette and colorkey info - */ - for (i = 0; i < rz_src->format->palette->ncolors; i++) { - rz_dst->format->palette->colors[i] = rz_src->format->palette->colors[i]; - } - rz_dst->format->palette->ncolors = rz_src->format->palette->ncolors; - /* - * Call the 8bit transformation routine to do the shrinking - */ - result = _shrinkSurfaceY(rz_src, rz_dst, factorx, factory); - if (result!=0) { - haveError = 1; - goto exitShrinkSurface; - } - - /* - * Set colorkey on target - */ - result = SDL_SetColorKey(rz_dst, SDL_SRCCOLORKEY | SDL_RLEACCEL, _colorkey(rz_src)); - if (result!=0) { - haveError = 1; - goto exitShrinkSurface; - } - } - -exitShrinkSurface: - if (rz_src!=NULL) { - /* - * Unlock source surface - */ - if (SDL_MUSTLOCK(rz_src)) { - SDL_UnlockSurface(rz_src); - } - - /* - * Cleanup temp surface - */ - if (src_converted==1) { - SDL_FreeSurface(rz_src); - } - } - - /* Check error state; maybe need to cleanup destination */ - if (haveError==1) { - if (rz_dst!=NULL) { - SDL_FreeSurface(rz_dst); - } - rz_dst=NULL; - } - - /* - * Return destination surface - */ - return (rz_dst); -} diff --git a/tizen/src/SDL_gfx/SDL_rotozoom.h b/tizen/src/SDL_gfx/SDL_rotozoom.h deleted file mode 100644 index 80b31f1..0000000 --- a/tizen/src/SDL_gfx/SDL_rotozoom.h +++ /dev/null @@ -1,123 +0,0 @@ -/* - -SDL_rotozoom.c: rotozoomer, zoomer and shrinker for 32bit or 8bit surfaces - -Copyright (C) 2001-2012 Andreas Schiffler - -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. - -Andreas Schiffler -- aschiffler at ferzkopp dot net - -*/ - -#ifndef _SDL_rotozoom_h -#define _SDL_rotozoom_h - -#include - -/* Set up for C function definitions, even when using C++ */ -#ifdef __cplusplus -extern "C" { -#endif - -#ifndef M_PI -#define M_PI 3.141592654 -#endif - -#include "SDL.h" - - /* ---- Defines */ - - /*! - \brief Disable anti-aliasing (no smoothing). - */ -#define SMOOTHING_OFF 0 - - /*! - \brief Enable anti-aliasing (smoothing). - */ -#define SMOOTHING_ON 1 - - /* ---- Function Prototypes */ - -#ifdef _MSC_VER -# if defined(DLL_EXPORT) && !defined(LIBSDL_GFX_DLL_IMPORT) -# define SDL_ROTOZOOM_SCOPE __declspec(dllexport) -# else -# ifdef LIBSDL_GFX_DLL_IMPORT -# define SDL_ROTOZOOM_SCOPE __declspec(dllimport) -# endif -# endif -#endif -#ifndef SDL_ROTOZOOM_SCOPE -# define SDL_ROTOZOOM_SCOPE extern -#endif - - /* - - Rotozoom functions - - */ - - SDL_ROTOZOOM_SCOPE SDL_Surface *rotozoomSurface(SDL_Surface * src, double angle, double zoom, int smooth); - - SDL_ROTOZOOM_SCOPE SDL_Surface *rotozoomSurfaceXY - (SDL_Surface * src, double angle, double zoomx, double zoomy, int smooth); - - - SDL_ROTOZOOM_SCOPE void rotozoomSurfaceSize(int width, int height, double angle, double zoom, int *dstwidth, - int *dstheight); - - SDL_ROTOZOOM_SCOPE void rotozoomSurfaceSizeXY - (int width, int height, double angle, double zoomx, double zoomy, - int *dstwidth, int *dstheight); - - /* - - Zooming functions - - */ - - SDL_ROTOZOOM_SCOPE SDL_Surface *zoomSurface(SDL_Surface * src, double zoomx, double zoomy, int smooth); - - SDL_ROTOZOOM_SCOPE void zoomSurfaceSize(int width, int height, double zoomx, double zoomy, int *dstwidth, int *dstheight); - - /* - - Shrinking functions - - */ - - SDL_ROTOZOOM_SCOPE SDL_Surface *shrinkSurface(SDL_Surface * src, int factorx, int factory); - - /* - - Specialized rotation functions - - */ - - SDL_ROTOZOOM_SCOPE SDL_Surface* rotateSurface90Degrees(SDL_Surface* src, int numClockwiseTurns); - - /* Ends C function definitions when using C++ */ -#ifdef __cplusplus -} -#endif - -#endif /* _SDL_rotozoom_h */ diff --git a/tizen/src/maru_sdl_rotozoom.h b/tizen/src/maru_sdl_rotozoom.h deleted file mode 100644 index 88a4c15..0000000 --- a/tizen/src/maru_sdl_rotozoom.h +++ /dev/null @@ -1,299 +0,0 @@ -/* - * Rotation & Scaling of SDL surface - * - * Copyright (C) 2011 - 2012 Samsung Electronics Co., Ltd. All rights reserved. - * - * Contact: - * GiWoong Kim - * SeokYeon Hwang - * YeongKyoon Lee - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * Contributors: - * - S-Core Co., Ltd - * - */ - - -#ifndef MARU_SDL_ROTOZOOM_H_ -#define MARU_SDL_ROTOZOOM_H_ - -#include -#include - - -#define R_CHANNEL_MASK 0x00ff0000 -#define G_CHANNEL_MASK 0x0000ff00 -#define B_CHANNEL_MASK 0x000000ff - -SDL_Surface *maru_rotozoom(SDL_Surface *rz_src, SDL_Surface *rz_dst, - int angle, bool interpolate); - - -static inline void interpolate_pixel_cpy(unsigned int *dst, - unsigned int *src_addr, unsigned int src_w, unsigned int src_h, int x, int y) -{ -#if 0 - int i, j, n, m; - double mask[3][3] = { {0., 0.19, 0.}, {0.19, 0.24, 0.19}, {0., 0.19, 0.} }; - double sum_r = 0; //0x00ff0000 - double sum_g = 0; //0x0000ff00 - double sum_b = 0; //0x000000ff - int index; - - n = 0; - for(i = x - 1; i <= x + 1; i++, n++) { - m = 0; - for(j = y - 1; j <= y + 1; j++, m++) { - if (mask[n][m] == 0 || i < 0 || i > src_h || j < 0 || j > src_w) { //outline - index = (x * src_w) + y; - sum_r += mask[n][m] * (double)((src_addr[index] & 0x00ff0000) >> 16); - sum_g += mask[n][m] * (double)((src_addr[index] & 0x0000ff00) >> 8); - sum_b += mask[n][m] * (double)(src_addr[index] & 0x000000ff); - } else { - index = (i * src_w) + j; - sum_r += mask[n][m] * (double)((src_addr[index] & 0x00ff0000) >> 16); - sum_g += mask[n][m] * (double)((src_addr[index] & 0x0000ff00) >> 8); - sum_b += mask[n][m] * (double)(src_addr[index] & 0x000000ff); - } - } - } - - *dst = 0 | (((unsigned int) round(sum_r)) << 16) | - (((unsigned int) round(sum_g)) << 8) | - (((unsigned int) round(sum_b)) & 0x000000ff); -#endif - -#if 0 - unsigned int sum_r = 0; //0x00ff0000 - unsigned int sum_g = 0; //0x0000ff00 - unsigned int sum_b = 0; //0x000000ff - - unsigned int index = (x * src_w) + y; - unsigned int index_w = (y - 1 < 0) ? index : index - 1; - unsigned int index_e = (y + 1 > src_w) ? index : index + 1; - unsigned int index_n = (x - 1 < 0) ? index : ((x - 1) * src_w) + y; - unsigned int index_s = (x + 1 > src_h) ? index : ((x + 1) * src_w) + y; - - sum_r = (src_addr[index] & R_CHANNEL_MASK) + - (src_addr[index_w] & R_CHANNEL_MASK) + (src_addr[index_e] & R_CHANNEL_MASK) + - (src_addr[index_n] & R_CHANNEL_MASK) + (src_addr[index_s] & R_CHANNEL_MASK); - - sum_g = (src_addr[index] & G_CHANNEL_MASK) + - (src_addr[index_w] & G_CHANNEL_MASK) + (src_addr[index_e] & G_CHANNEL_MASK) + - (src_addr[index_n] & G_CHANNEL_MASK) + (src_addr[index_s] & G_CHANNEL_MASK); - - sum_b = (src_addr[index] & B_CHANNEL_MASK) + - (src_addr[index_w] & B_CHANNEL_MASK) + (src_addr[index_e] & B_CHANNEL_MASK) + - (src_addr[index_n] & B_CHANNEL_MASK) + (src_addr[index_s] & B_CHANNEL_MASK); - - *dst = 0xff000000 | ((sum_r / 5) & R_CHANNEL_MASK) | ((sum_g / 5) & G_CHANNEL_MASK) | ((sum_b / 5) & B_CHANNEL_MASK); -#endif - - unsigned int sum_r = 0; /* 0x00ff0000 */ - unsigned int sum_g = 0; /* 0x0000ff00 */ - unsigned int sum_b = 0; /* 0x000000ff */ - - unsigned int c00 = (x * src_w) + y; - unsigned int c01 = (y + 1 >= src_w) ? c00 : c00 + 1; - unsigned int c10 = (x + 1 >= src_h) ? c00 : ((x + 1) * src_w) + y; - unsigned int c11 = (y + 1 >= src_w) ? c00 : c10 + 1; - - sum_r = (src_addr[c00] & R_CHANNEL_MASK) + (src_addr[c01] & R_CHANNEL_MASK) + - (src_addr[c10] & R_CHANNEL_MASK) + (src_addr[c11] & R_CHANNEL_MASK); - - sum_g = (src_addr[c00] & G_CHANNEL_MASK) + (src_addr[c01] & G_CHANNEL_MASK) + - (src_addr[c10] & G_CHANNEL_MASK) + (src_addr[c11] & G_CHANNEL_MASK); - - sum_b = (src_addr[c00] & B_CHANNEL_MASK) + (src_addr[c01] & B_CHANNEL_MASK) + - (src_addr[c10] & B_CHANNEL_MASK) + (src_addr[c11] & B_CHANNEL_MASK); - - *dst = 0xff000000 | ((sum_r >> 2) & R_CHANNEL_MASK) | - ((sum_g >> 2) & G_CHANNEL_MASK) | ((sum_b >> 2) & B_CHANNEL_MASK); -} - -SDL_Surface *maru_rotozoom(SDL_Surface *rz_src, SDL_Surface *rz_dst, - int angle, bool interpolate) -{ -#define PRECISION 4096 -#define SHIFT 12 - - int i, j; - unsigned int dst_width = 0; - unsigned int dst_height = 0; - - unsigned int sx = 0; - unsigned int sy = 0; - unsigned int row_index = 0; - unsigned int col_index = 0; - - unsigned int *in = NULL; - unsigned int *out = NULL; - unsigned int *row = NULL; - - switch(angle) { - case 90: - case 270: - dst_width = rz_dst->h; - dst_height = rz_dst->w; - break; - case 0: - case 180: - default: - dst_width = rz_dst->w; - dst_height = rz_dst->h; - break; - } - - sx = (rz_src->w) * PRECISION / dst_width; - sy = (rz_src->h) * PRECISION / dst_height; - - in = (unsigned int *) rz_src->pixels; - - SDL_LockSurface(rz_src); - - if (interpolate == true) { - switch(angle) { - case 0: /* portrait */ - out = (unsigned int *) rz_dst->pixels; - - for (i = 0; i < dst_height; i++, out += dst_width) { - row_index = (i * sy) >> SHIFT; - - for (j = 0; j < dst_width; j++) { - col_index = (sx * j) >> SHIFT; - interpolate_pixel_cpy(&out[j], in, - rz_src->w, rz_src->h, row_index, col_index); - } - } - break; - - case 90: /* landscape */ - for (i = 0; i < dst_height; i++) { - row_index = (i * sy) >> SHIFT; - - out = ((unsigned int *) rz_dst->pixels) + i; - - for (j = 0; j < dst_width; j++, out += dst_height) { - col_index = (sx * j) >> SHIFT; - interpolate_pixel_cpy(&out[0], in, - rz_src->w, rz_src->h, row_index, rz_src->w - col_index - 1); - } - } - break; - - case 180: /* reverse portrait */ - out = (unsigned int *) rz_dst->pixels; - - for (i = 0; i < dst_height; i++, out += dst_width) { - row_index = ((dst_height - i - 1) * sy) >> SHIFT; - - for (j = 0; j < dst_width; j++) { - col_index = (sx * j) >> SHIFT; - interpolate_pixel_cpy(&out[dst_width - j - 1], in, - rz_src->w, rz_src->h, row_index, col_index); - } - } - break; - - case 270: /* reverse landscape */ - for (i = 0; i < dst_height; i++) { - row_index = ((dst_height - i - 1) * sy) >> SHIFT; - - out = ((unsigned int *) rz_dst->pixels) + i; - - for (j = 0; j < dst_width; j++, out += dst_height) { - col_index = (sx * j) >> SHIFT; - interpolate_pixel_cpy(&out[0], in, - rz_src->w, rz_src->h, row_index, col_index); - } - } - break; - - default: - fprintf(stdout, "not supported angle factor (angle=%d)\n", angle); - return NULL; - } - } else { - switch(angle) { - case 0: /* portrait */ - out = (unsigned int *) rz_dst->pixels; - - for (i = 0; i < dst_height; i++, out += dst_width) { - row_index = (i * sy) >> SHIFT; - row = in + (row_index * rz_src->w); - - for (j = 0; j < dst_width; j++) { - col_index = (sx * j) >> SHIFT; - out[j] = row[col_index]; - } - } - break; - - case 90: /* landscape */ - for (i = 0; i < dst_height; i++) { - row_index = (i * sy) >> SHIFT; - row = in + (row_index * rz_src->w); - - out = ((unsigned int *) rz_dst->pixels) + i; - - for (j = 0; j < dst_width; j++, out += dst_height) { - col_index = (sx * j) >> SHIFT; - out[0] = row[rz_src->w - col_index - 1]; - } - } - break; - - case 180: /* reverse portrait */ - out = (unsigned int *) rz_dst->pixels; - - for (i = 0; i < dst_height; i++, out += dst_width) { - row_index = ((dst_height - i - 1) * sy) >> SHIFT; - row = in + (row_index * rz_src->w); - - for (j = 0; j < dst_width; j++) { - col_index = (sx * j) >> SHIFT; - out[dst_width - j - 1] = row[col_index]; - } - } - break; - - case 270: /* reverse landscape */ - for (i = 0; i < dst_height; i++) { - row_index = ((dst_height - i - 1) * sy) >> SHIFT; - row = in + (row_index * rz_src->w); - - out = ((unsigned int *) rz_dst->pixels) + i; - - for (j = 0; j < dst_width; j++, out += dst_height) { - col_index = (sx * j) >> SHIFT; - out[0] = row[col_index]; - } - } - break; - - default: - fprintf(stdout, "not supported angle factor (angle=%d)\n", angle); - return NULL; - } - } - - SDL_UnlockSurface(rz_src); - - return rz_dst; -} - -#endif /* MARU_SDL_ROTOZOOM_H_ */