diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/luapsx.cpp | 268 |
1 files changed, 266 insertions, 2 deletions
diff --git a/lib/luapsx.cpp b/lib/luapsx.cpp index 0665d05..14dc1e3 100644 --- a/lib/luapsx.cpp +++ b/lib/luapsx.cpp @@ -17,9 +17,273 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ -/* $Id: luapsx.cpp,v 1.1 2004-02-27 04:13:32 pixel Exp $ */ +/* $Id: luapsx.cpp,v 1.2 2004-02-29 17:44:42 pixel Exp $ */ +#include <LuaHandle.h> #include "luapsx.h" +#include "generic.h" -void Luapsx::pushstatics(Lua * L) throw (GeneralException) { +void over(Byte * d, Byte R, Byte G, Byte B, Byte A) { + d[0] = R; + d[1] = G; + d[2] = B; +} + +void alpha(Byte * d, Byte R, Byte G, Byte B, Byte A) { + A = MIN(A, (Byte) 128); + d[0] = ((int)d[0] * (128 - A) + R * A) >> 7; + d[1] = ((int)d[1] * (128 - A) + G * A) >> 7; + d[2] = ((int)d[2] * (128 - A) + B * A) >> 7; +} + +void lighten(Byte * d, Byte R, Byte G, Byte B, Byte A) { + A = MIN(A, (Byte) 128); + R = ((int)d[0] * (128 - A) + R * A) >> 7; + G = ((int)d[1] * (128 - A) + G * A) >> 7; + B = ((int)d[2] * (128 - A) + B * A) >> 7; + d[0] = MAX(R, d[0]); + d[1] = MAX(G, d[1]); + d[2] = MAX(B, d[2]); +} + +void darken(Byte * d, Byte R, Byte G, Byte B, Byte A) { + A = MIN(A, (Byte) 128); + R = ((int)d[0] * (128 - A) + R * A) >> 7; + G = ((int)d[1] * (128 - A) + G * A) >> 7; + B = ((int)d[2] * (128 - A) + B * A) >> 7; + d[0] = MIN(R, d[0]); + d[1] = MIN(G, d[1]); + d[2] = MIN(B, d[2]); +} + +enum { + BLIT_OVER = 0, + BLIT_OVER32, + BLIT_ALPHA, + BLIT_LIGHTEN, + BLIT_LIGHTEN32, + BLIT_DARKEN, + BLIT_DARKEN32, +}; + +typedef void psx; + +enum psx_functions_t { + PSX_BSDECODE = 0, + PSX_BSENCODE, + PSX_BLIT, +}; + +struct lua_functypes_t psx_functions[] = { + { PSX_BSDECODE, "bsdecode", 3, 3, { LUA_OBJECT, LUA_NUMBER, LUA_NUMBER } }, + { PSX_BSENCODE, "bsencode", 3, 5, { LUA_OBJECT, LUA_NUMBER, LUA_NUMBER, LUA_NUMBER, LUA_NUMBER } }, + { PSX_BLIT, "blit", 9, 9, { LUA_OBJECT, LUA_OBJECT, LUA_NUMBER, LUA_NUMBER, LUA_NUMBER, LUA_NUMBER, LUA_NUMBER, LUA_NUMBER, LUA_NUMBER } }, + { -1, 0, 0, 0, 0 } +}; + +class sLua_psx : public Base { + public: + DECLARE_FUNCTION(psx, PSX_BSDECODE); + private: + static int psx_proceed_statics(Lua * L, int n, int caller); +}; + +void Luapsx::pushstatics(Lua * L) throw (GeneralException ) { + CHECK_FUNCTIONS(psx); + + PUSH_FUNCTION(psx, PSX_BSDECODE); + + L->push("BLIT_OVER"); + L->push((lua_Number) BLIT_OVER); + L->settable(LUA_GLOBALSINDEX); + + L->push("BLIT_OVER32"); + L->push((lua_Number) BLIT_OVER32); + L->settable(LUA_GLOBALSINDEX); + + L->push("BLIT_ALPHA"); + L->push((lua_Number) BLIT_ALPHA); + L->settable(LUA_GLOBALSINDEX); + + L->push("BLIT_LIGHTEN"); + L->push((lua_Number) BLIT_LIGHTEN); + L->settable(LUA_GLOBALSINDEX); + + L->push("BLIT_LIGHTEN32"); + L->push((lua_Number) BLIT_LIGHTEN32); + L->settable(LUA_GLOBALSINDEX); + + L->push("BLIT_DARKEN"); + L->push((lua_Number) BLIT_DARKEN); + L->settable(LUA_GLOBALSINDEX); + + L->push("BLIT_DARKEN32"); + L->push((lua_Number) BLIT_DARKEN32); + L->settable(LUA_GLOBALSINDEX); +} + +int sLua_psx::psx_proceed_statics(Lua * L, int n, int caller) { + int r = 0; + + switch (caller) { + case PSX_BSDECODE: + r = 1; + { + Buffer * b = new Buffer(true); + Handle * f = (Handle *) LuaObject::getme(L, 1); + int width = L->tonumber(2); + int height = L->tonumber(3); + Byte * in = (Byte *) malloc(f->GetSize() + 10); + Byte * out = (Byte *) malloc(width * height * 3); + LuaBuffer lb(b); + lb.pushdestruct(L); + f->read(in, f->GetSize()); + bs_decode_rgb24(out, (bs_header_t *) in, width, height, 0); + for (int i = 0; i < width * height * 3; i++) { + b[i] = out[i]; + } + free(out); + free(in); + } + case PSX_BSENCODE: + r = 3; + { + unsigned short out[0x80000]; + Buffer * b = new Buffer(true); + LuaBuffer lb(b); + lb.pushdestruct(L); + Handle * f = (Handle *) LuaObject::getme(L, 1); + bs_input_image_t img; + img.width = L->tonumber(2); + img.height = L->tonumber(3); + int max_size = 14112, cur_size; + int q_scale = 1; + if (n >= 4) + max_size = L->tonumber(4); + if (n >= 5) + q_scale = L->tonumber(5); + img.lpbits = (Byte *) malloc(f->GetSize()); + img.top = img.lpbits; + img.nextline = img.width * 3; + img.bit = 24; + + f->read(img.lpbits, f->GetSize()); + + bs_init(); + + cur_size = max_size + 1; + + for (cur_size = max_size + 1; max_size < cur_size; q_scale++) { + cur_size = bs_encode((bs_header_t *) out, &img, 2, q_scale, 0); + } + + for (int i = 0; i < cur_size; i++) { + b[i] = out[i]; + } + + L->push((lua_Number) cur_size); + L->push((lua_Number) q_scale); + } + case PSX_BLIT: + r = 0; + { + Handle * d = (Handle *) LuaObject::getme(L, 1); + Handle * s = (Handle *) LuaObject::getme(L, 2); + int dw = L->tonumber(3), + dh = L->tonumber(4), + sw = L->tonumber(5), + sh = L->tonumber(6), + sx = L->tonumber(7), + sy = L->tonumber(8), + bl = L->tonumber(9); + int bytes, dstart = 0, dskip = 0, sstart = 0, sskip = 0, i, j; + Byte RGB[3], R, G, B, A = 128; + void (*op_func)(Byte *, Byte, Byte, Byte, Byte); + + switch(bl) { + case BLIT_OVER: + bytes = 3; + op_func = over; + break; + case BLIT_OVER32: + bytes = 4; + op_func = over; + break; + case BLIT_ALPHA: + bytes = 4; + op_func = alpha; + break; + case BLIT_LIGHTEN: + bytes = 3; + op_func = lighten; + break; + case BLIT_LIGHTEN32: + bytes = 4; + op_func = lighten; + break; + case BLIT_DARKEN: + bytes = 3; + op_func = darken; + break; + case BLIT_DARKEN32: + bytes = 4; + op_func = darken; + break; + default: + L->error("Blitting operation unknown."); + return 0; + } + + if (sy < 0) { + sstart += sw * bytes * sy; + sh -= sy; + sy = 0; + } else { + dstart += dw * 3 * sy; + } + + if ((sy + sh) > dh) { + sh -= (sy + sh) - dh; + } + + if (sx < 0) { + sstart += sx * bytes; + sskip += sx * bytes; + sw -= sx; + sx = 0; + } else { + dstart += sx * 3; + } + + if ((sx + sw) > dw) { + sskip += (sx + sw) - dw; + sw -= (sx + sw) - dw; + } + + dskip = (dw - sw) * 3; + + d->seek(dstart); + s->seek(sstart); + + for (i = 0; i < sh; i++, s->seek(sskip, SEEK_CUR), d->seek(dskip, SEEK_CUR)) { + for (j = 0; j < sw; j++) { + RGB[0] = d->readU8(); + RGB[1] = d->readU8(); + RGB[2] = d->readU8(); + d->seek(-3, SEEK_CUR); + R = s->readU8(); + G = s->readU8(); + B = s->readU8(); + if (bytes == 4) + A = s->readU8(); + op_func(RGB, R, G, B, A); + d->writeU8(R); + d->writeU8(G); + d->writeU8(B); + } + } + + } + } + return r; } |