Initial commit of picviewer.

Conflicts:

	Makefile
	extentions.lua
	pic.c
	reader.lua

kpdfview.c

@@ -28,6 +28,7 @@
 #include "pdf.h"
 #include "mupdfimg.h"
 #include "djvu.h"
+#include "pic.h"
 #include "cre.h"
 #include "einkfb.h"
 #include "input.h"
@@ -96,6 +97,7 @@ int main(int argc, char **argv) {
 		luaopen_einkfb(L);
 		luaopen_pdf(L);
 		luaopen_djvu(L);
+		luaopen_pic(L);
 		luaopen_cre(L);
 		luaopen_input(L);
 		luaopen_util(L);

pic.c

@@ -20,7 +20,6 @@
 #include <string.h>
 #include <stdio.h>
 #include <math.h>
-
 #include "blitbuffer.h"
 #include "drawcontext.h"
 #include "pic.h"
@@ -87,11 +86,6 @@ static int openDocument(lua_State *L) {
 	} else {
 		free(raw_image);
 		return luaL_error(L, "Unsupported image format");
-	}
-
-	doc->width = width;
-	doc->height = height;
-	doc->components = components;
 	return 1;
 }
 
@@ -171,26 +165,6 @@ static int drawPage(lua_State *L) {
 
 	scaleImage(scaled_image, page->image, img_width, img_height, img_new_width, img_new_height);
 
-	uint8_t *bbptr = bb->data;
-	uint8_t *pmptr = scaled_image;
-	bbptr += bb->pitch * y_offset;
-	for(y = y_offset; y < img_new_height; y++) {
-		for(x = x_offset/2; x < (img_new_width / 2); x++) {
-			int p = x*2 - x_offset;
-			unsigned char low = 15 - (pmptr[p + 1] >> 4);
-			unsigned char high = 15 - (pmptr[p] >> 4);
-			if (adjust_pixels)
-				bbptr[x] = adjusted_high[high] | adjusted_low[low];
-			else
-				bbptr[x] = (high << 4) | low;
-		}
-		if (img_new_width & 1)
-			bbptr[x] = 255 - (pmptr[x*2] & 0xF0);
-		bbptr += bb->pitch;
-		pmptr += img_new_width;
-	}
-
-	free(scaled_image);
 	return 0;
 }
 

pic.h

@@ -0,0 +1,27 @@
+/*
+    KindlePDFViewer: JPEG Picture viewer abstraction for Lua
+    Copyright (C) 2012 Tigran Aivazian <tigran@bibles.org.uk>
+
+    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/>.
+*/
+#ifndef _JPG_H
+#define _JPG_H
+
+#include <lua.h>
+#include <lualib.h>
+#include <lauxlib.h>
+
+int luaopen_pic(lua_State *L);
+
+#endif

picviewer.lua

@@ -0,0 +1,11 @@
+require "unireader"
+
+PICViewer = UniReader:new{}
+
+function PICViewer:open(filename)
+	ok, self.doc = pcall(pic.openDocument, filename)
+	if not ok then
+		return ok, self.doc
+	end
+	return ok
+end