mirror of https://github.com/koreader/koreader
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
/*
|
|
KindlePDFViewer: buffer for blitting muPDF data to framebuffer (blitbuffer)
|
|
Copyright (C) 2011 Hans-Werner Hilse <hilse@web.de>
|
|
|
|
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 3 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "blitbuffer.h"
|
|
|
|
static int newBlitBuffer(lua_State *L) {
|
|
int w = luaL_checkint(L, 1);
|
|
int h = luaL_checkint(L, 2);
|
|
BlitBuffer *bb = (BlitBuffer*) lua_newuserdata(L, sizeof(BlitBuffer) + (w * h / 2) - 1);
|
|
luaL_getmetatable(L, "blitbuffer");
|
|
lua_setmetatable(L, -2);
|
|
|
|
bb->w = w;
|
|
bb->h = h;
|
|
return 1;
|
|
}
|
|
|
|
static int getWidth(lua_State *L) {
|
|
BlitBuffer *bb = (BlitBuffer*) luaL_checkudata(L, 1, "blitbuffer");
|
|
lua_pushinteger(L, bb->w);
|
|
return 1;
|
|
}
|
|
|
|
static int getHeight(lua_State *L) {
|
|
BlitBuffer *bb = (BlitBuffer*) luaL_checkudata(L, 1, "blitbuffer");
|
|
lua_pushinteger(L, bb->h);
|
|
return 1;
|
|
}
|
|
|
|
static int freeBlitBuffer(lua_State *L) {
|
|
BlitBuffer *bb = (BlitBuffer*) luaL_checkudata(L, 1, "blitbuffer");
|
|
|
|
// lua will free the memory for the buffer itself
|
|
return 0;
|
|
}
|
|
|
|
static const struct luaL_reg blitbuffer_func[] = {
|
|
{"new", newBlitBuffer},
|
|
{NULL, NULL}
|
|
};
|
|
|
|
static const struct luaL_reg blitbuffer_meth[] = {
|
|
{"getWidth", getWidth},
|
|
{"getHeight", getHeight},
|
|
{"free", freeBlitBuffer},
|
|
{NULL, NULL}
|
|
};
|
|
|
|
int luaopen_blitbuffer(lua_State *L) {
|
|
luaL_newmetatable(L, "blitbuffer");
|
|
lua_pushstring(L, "__index");
|
|
lua_pushvalue(L, -2);
|
|
lua_settable(L, -3);
|
|
luaL_register(L, NULL, blitbuffer_meth);
|
|
luaL_register(L, "blitbuffer", blitbuffer_func);
|
|
return 1;
|
|
}
|