diff options
author | 2023-02-26 19:40:37 +0100 | |
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committer | 2023-02-27 05:40:37 +1100 | |
commit | bd59a0d447b861982429905f186dee8b12f2e777 (patch) | |
tree | dc6341c8fb098818039127f758cf3eb0fade986a /3rdparty/SDL2/src/render/software/SDL_rotate.c | |
parent | 28b03e92a84daf79eb3cef75c51c014b2f57807b (diff) |
Removed local copy of SDL source and update Android build support. (#10899)
* Removed SDL2 source.
* Updated gradle.
* Updated SDL2 Java support glue code.
* Increased minimum supported Android API version to 24.
* Updated required asset files for Android app.
* Added proper tag for Android logging.
* Added SDL2 hint to make BGFX work on Android.
Diffstat (limited to '3rdparty/SDL2/src/render/software/SDL_rotate.c')
-rw-r--r-- | 3rdparty/SDL2/src/render/software/SDL_rotate.c | 579 |
1 files changed, 0 insertions, 579 deletions
diff --git a/3rdparty/SDL2/src/render/software/SDL_rotate.c b/3rdparty/SDL2/src/render/software/SDL_rotate.c deleted file mode 100644 index 0141d174d9f..00000000000 --- a/3rdparty/SDL2/src/render/software/SDL_rotate.c +++ /dev/null @@ -1,579 +0,0 @@ -/* - -SDL_rotate.c: rotates 32bit or 8bit surfaces - -Shamelessly stolen from SDL_gfx by Andreas Schiffler. Original copyright follows: - -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 - -*/ -#include "../../SDL_internal.h" - -#if defined(__WIN32__) -#include "../../core/windows/SDL_windows.h" -#endif - -#include <stdlib.h> -#include <string.h> - -#include "SDL.h" -#include "SDL_rotate.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; - SDL_GetColorKey(src, &key); - return key; -} - - -/* ! -\brief Internal target surface sizing function for rotations 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 dstwidth The calculated width of the destination surface. -\param dstheight The calculated height of the destination surface. -\param cangle The sine of the angle -\param sangle The cosine of the angle - -*/ -void -SDLgfx_rotozoomSurfaceSizeTrig(int width, int height, double angle, - int *dstwidth, int *dstheight, - double *cangle, double *sangle) -{ - /* The trig code below gets the wrong size (due to FP inaccuracy?) when angle is a multiple of 90 degrees */ - int angle90 = (int)(angle/90); - if(angle90 == angle/90) { /* if the angle is a multiple of 90 degrees */ - angle90 %= 4; - if(angle90 < 0) angle90 += 4; /* 0:0 deg, 1:90 deg, 2:180 deg, 3:270 deg */ - if(angle90 & 1) { - *dstwidth = height; - *dstheight = width; - *cangle = 0; - *sangle = angle90 == 1 ? -1 : 1; /* reversed because our rotations are clockwise */ - } else { - *dstwidth = width; - *dstheight = height; - *cangle = angle90 == 0 ? 1 : -1; - *sangle = 0; - } - } else { - 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); /* reverse the angle because our rotations are clockwise */ - *sangle = SDL_sin(radangle); - *cangle = SDL_cos(radangle); - x = (double)(width / 2); - y = (double)(height / 2); - cx = *cangle * x; - cy = *cangle * y; - sx = *sangle * x; - sy = *sangle * y; - - dstwidthhalf = MAX((int) - SDL_ceil(MAX(MAX(MAX(SDL_fabs(cx + sy), SDL_fabs(cx - sy)), SDL_fabs(-cx + sy)), SDL_fabs(-cx - sy))), 1); - dstheighthalf = MAX((int) - SDL_ceil(MAX(MAX(MAX(SDL_fabs(sx + cy), SDL_fabs(sx - cy)), SDL_fabs(-sx + cy)), SDL_fabs(-sx - cy))), 1); - *dstwidth = 2 * dstwidthhalf; - *dstheight = 2 * dstheighthalf; - } -} - -/* Computes source pointer X/Y increments for a rotation that's a multiple of 90 degrees. */ -static void -computeSourceIncrements90(SDL_Surface * src, int bpp, int angle, int flipx, int flipy, - int *sincx, int *sincy, int *signx, int *signy) -{ - int pitch = flipy ? -src->pitch : src->pitch; - if (flipx) { - bpp = -bpp; - } - switch (angle) { /* 0:0 deg, 1:90 deg, 2:180 deg, 3:270 deg */ - case 0: *sincx = bpp; *sincy = pitch - src->w * *sincx; *signx = *signy = 1; break; - case 1: *sincx = -pitch; *sincy = bpp - *sincx * src->h; *signx = 1; *signy = -1; break; - case 2: *sincx = -bpp; *sincy = -src->w * *sincx - pitch; *signx = *signy = -1; break; - case 3: default: *sincx = pitch; *sincy = -*sincx * src->h - bpp; *signx = -1; *signy = 1; break; - } - if (flipx) { - *signx = -*signx; - } - if (flipy) { - *signy = -*signy; - } -} - -/* Performs a relatively fast rotation/flip when the angle is a multiple of 90 degrees. */ -#define TRANSFORM_SURFACE_90(pixelType) \ - int dy, dincy = dst->pitch - dst->w*sizeof(pixelType), sincx, sincy, signx, signy; \ - Uint8 *sp = (Uint8*)src->pixels, *dp = (Uint8*)dst->pixels, *de; \ - \ - computeSourceIncrements90(src, sizeof(pixelType), angle, flipx, flipy, &sincx, &sincy, &signx, &signy); \ - if (signx < 0) sp += (src->w-1)*sizeof(pixelType); \ - if (signy < 0) sp += (src->h-1)*src->pitch; \ - \ - for (dy = 0; dy < dst->h; sp += sincy, dp += dincy, dy++) { \ - if (sincx == sizeof(pixelType)) { /* if advancing src and dest equally, use memcpy */ \ - SDL_memcpy(dp, sp, dst->w*sizeof(pixelType)); \ - sp += dst->w*sizeof(pixelType); \ - dp += dst->w*sizeof(pixelType); \ - } else { \ - for (de = dp + dst->w*sizeof(pixelType); dp != de; sp += sincx, dp += sizeof(pixelType)) { \ - *(pixelType*)dp = *(pixelType*)sp; \ - } \ - } \ - } - -static void -transformSurfaceRGBA90(SDL_Surface * src, SDL_Surface * dst, int angle, int flipx, int flipy) -{ - TRANSFORM_SURFACE_90(tColorRGBA); -} - -static void -transformSurfaceY90(SDL_Surface * src, SDL_Surface * dst, int angle, int flipx, int flipy) -{ - TRANSFORM_SURFACE_90(tColorY); -} - -#undef TRANSFORM_SURFACE_90 - -/* ! -\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 ((unsigned)dx < (unsigned)sw && (unsigned)dy < (unsigned)sh) { - sp = (tColorRGBA *) ((Uint8 *) src->pixels + src->pitch * dy) + 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 = (sdx >> 16); - dy = (sdy >> 16); - if ((unsigned)dx < (unsigned)src->w && (unsigned)dy < (unsigned)src->h) { - if(flipx) dx = sw - dx; - if(flipy) dy = sh - dy; - *pc = *((tColorRGBA *)((Uint8 *)src->pixels + src->pitch * dy) + dx); - } - 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; - tColorY *pc; - 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); - pc = (tColorY*) dst->pixels; - gap = dst->pitch - dst->w; - /* - * Clear surface to colorkey - */ - SDL_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 = (sdx >> 16); - dy = (sdy >> 16); - if ((unsigned)dx < (unsigned)src->w && (unsigned)dy < (unsigned)src->h) { - if (flipx) dx = (src->w-1)-dx; - if (flipy) dy = (src->h-1)-dy; - *pc = *((tColorY *)src->pixels + src->pitch * dy + dx); - } - sdx += icos; - sdy += isin; - pc++; - } - pc += gap; - } -} - - -/* ! -\brief Rotates and zooms a surface with different horizontal and vertival scaling factors and optional anti-aliasing. - -Rotates a 32bit or 8bit 'src' surface to newly created 'dst' surface. -'angle' is the rotation in degrees, 'centerx' and 'centery' the rotation center. 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 centerx The horizontal coordinate of the center of rotation -\param zoomy The vertical coordinate of the center of rotation -\param smooth Antialiasing flag; set to SMOOTHING_ON to enable. -\param flipx Set to 1 to flip the image horizontally -\param flipy Set to 1 to flip the image vertically -\param dstwidth The destination surface width -\param dstheight The destination surface height -\param cangle The angle cosine -\param sangle The angle sine -\return The new rotated surface. - -*/ - -SDL_Surface * -SDLgfx_rotateSurface(SDL_Surface * src, double angle, int centerx, int centery, int smooth, int flipx, int flipy, int dstwidth, int dstheight, double cangle, double sangle) -{ - SDL_Surface *rz_src; - SDL_Surface *rz_dst; - int is32bit, angle90; - int i; - Uint8 r = 0, g = 0, b = 0; - Uint32 colorkey = 0; - int colorKeyAvailable = 0; - double sangleinv, cangleinv; - - /* - * Sanity check - */ - if (src == NULL) - return (NULL); - - if (src->flags & SDL_TRUE/* 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; - } else { - rz_src = SDL_ConvertSurfaceFormat(src, SDL_PIXELFORMAT_ARGB32, src->flags); - if (rz_src == NULL) { - return NULL; - } - is32bit = 1; - } - - /* Determine target size */ - /* _rotozoomSurfaceSizeTrig(rz_src->w, rz_src->h, angle, &dstwidth, &dstheight, &cangle, &sangle); */ - - /* - * Calculate target factors from sin/cos and zoom - */ - sangleinv = sangle*65536.0; - cangleinv = cangle*65536.0; - - /* - * Alloc space to completely contain the rotated surface - */ - 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 if the rotation is a multiple of 90 degrees so we can take a fast path and also somewhat reduce - * the off-by-one problem in _transformSurfaceRGBA that expresses itself when the rotation is near - * multiples of 90 degrees. - */ - angle90 = (int)(angle/90); - if (angle90 == angle/90) { - angle90 %= 4; - if (angle90 < 0) angle90 += 4; /* 0:0 deg, 1:90 deg, 2:180 deg, 3:270 deg */ - } else { - angle90 = -1; - } - - /* - * Check which kind of surface we have - */ - if (is32bit) { - /* - * Call the 32bit transformation routine to do the rotation (using alpha) - */ - if (angle90 >= 0) { - transformSurfaceRGBA90(rz_src, rz_dst, angle90, flipx, flipy); - } else { - _transformSurfaceRGBA(rz_src, rz_dst, centerx, centery, (int) (sangleinv), (int) (cangleinv), flipx, flipy, smooth); - } - /* - * Turn on source-alpha support - */ - /* SDL_SetAlpha(rz_dst, SDL_SRCALPHA, 255); */ - SDL_SetColorKey(rz_dst, /* SDL_SRCCOLORKEY */ SDL_TRUE | 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 - */ - if(angle90 >= 0) { - transformSurfaceY90(rz_src, rz_dst, angle90, flipx, flipy); - } else { - transformSurfaceY(rz_src, rz_dst, centerx, centery, (int)(sangleinv), (int)(cangleinv), flipx, flipy); - } - SDL_SetColorKey(rz_dst, /* SDL_SRCCOLORKEY */ SDL_TRUE | SDL_RLEACCEL, _colorkey(rz_src)); - } - - /* copy alpha mod, color mod, and blend mode */ - { - SDL_BlendMode blendMode; - Uint8 alphaMod, cr, cg, cb; - SDL_GetSurfaceAlphaMod(src, &alphaMod); - SDL_GetSurfaceBlendMode(src, &blendMode); - SDL_GetSurfaceColorMod(src, &cr, &cg, &cb); - SDL_SetSurfaceAlphaMod(rz_dst, alphaMod); - SDL_SetSurfaceBlendMode(rz_dst, blendMode); - SDL_SetSurfaceColorMod(rz_dst, cr, cg, cb); - } - - /* - * Unlock source surface - */ - if (SDL_MUSTLOCK(rz_src)) { - SDL_UnlockSurface(rz_src); - } - - /* - * Cleanup temp surface - */ - if (rz_src != src) { - SDL_FreeSurface(rz_src); - } - - /* - * Return destination surface - */ - return (rz_dst); -} |