From 2d71d20a62ca8f6989d86db58ce64c7a862675dd Mon Sep 17 00:00:00 2001
From: Alessio Treglia <alessio@debian.org>
Date: Sat, 5 Oct 2013 15:28:26 +0100
Subject: Imported Upstream version 3.10.0

---
 src/book.vala | 78 ++++++++++++++++++++++++-----------------------------------
 1 file changed, 31 insertions(+), 47 deletions(-)

(limited to 'src/book.vala')

diff --git a/src/book.vala b/src/book.vala
index 6740fcb..a4e6cdd 100644
--- a/src/book.vala
+++ b/src/book.vala
@@ -113,16 +113,18 @@ public class Book
             suffix = basename.slice (extension_index, basename.length);
             prefix = uri.slice (0, uri.length - suffix.length);
         }
-
-        return File.new_for_uri ("%s-%d%s".printf (prefix, i+1, suffix));
+        var width = get_n_pages ().to_string().length;
+        var number_format = "%%0%dd".printf (width);
+        var filename = prefix + "-" + number_format.printf (i + 1) + suffix;
+        return File.new_for_uri (filename);
     }
 
-    private void save_multi_file (string type, File file) throws Error
+    private void save_multi_file (string type, int quality, File file) throws Error
     {
         for (var i = 0; i < get_n_pages (); i++)
         {
             var page = get_page (i);
-            page.save (type, make_indexed_file (file.get_uri (), i));
+            page.save (type, quality, make_indexed_file (file.get_uri (), i));
             saving (i);
         }
     }
@@ -177,50 +179,33 @@ public class Book
         return out_data;
     }
 
-    private static void jpeg_init_cb (JPEG.Compress info) {}
-    private static bool jpeg_empty_cb (JPEG.Compress info) { return true; }
-    private static void jpeg_term_cb (JPEG.Compress info) {}
+    private ByteArray jpeg_data;
 
-    private uint8[] compress_jpeg (Gdk.Pixbuf image, out size_t n_written)
+    private uint8[] compress_jpeg (Gdk.Pixbuf image, int quality, int dpi)
     {
-        var info = JPEG.Compress ();
-        var jerr = JPEG.ErrorManager ();
-        var dest_mgr = JPEG.DestinationManager ();
-
-        info.err = jerr.std_error ();
-        info.create_compress ();
-
-        info.image_width = image.get_width ();
-        info.image_height = image.get_height ();
-        info.input_components = 3;
-        info.in_color_space = JPEG.ColorSpace.RGB; /* TODO: JCS_GRAYSCALE? */
-        info.set_defaults ();
-
-        var max_length = info.image_width * info.image_height * info.input_components;
-        var data = new uint8[max_length];
-        dest_mgr.next_output_byte = data;
-        dest_mgr.free_in_buffer = max_length;
-        dest_mgr.init_destination = jpeg_init_cb;
-        dest_mgr.empty_output_buffer = jpeg_empty_cb;
-        dest_mgr.term_destination = jpeg_term_cb;
-        info.dest = &dest_mgr;
-
-        info.start_compress (true);
-        unowned uint8[] pixels = image.get_pixels ();
-        for (var r = 0; r < info.image_height; r++)
+        jpeg_data = new ByteArray ();
+        string[] keys = { "quality", "density-unit", "x-density", "y-density", null };
+        string[] values = { "%d".printf (quality), "dots-per-inch", "%d".printf (dpi), "%d".printf (dpi), null };
+        try
+        {
+            image.save_to_callbackv (write_pixbuf_data, "jpeg", keys, values);
+        }
+        catch (Error e)
         {
-            uint8* row[1];
-            row[0] = (uint8*) pixels + r * image.get_rowstride ();
-            info.write_scanlines (row, 1);
         }
-        info.finish_compress ();
-        n_written = max_length - dest_mgr.free_in_buffer;
-        data.resize ((int) n_written);
+        var data = (owned) jpeg_data.data;
+        jpeg_data = null;
 
         return data;
     }
 
-    private void save_pdf (File file) throws Error
+    private bool write_pixbuf_data (uint8[] buf) throws Error
+    {
+        jpeg_data.append (buf);
+        return true;
+    }
+
+    private void save_pdf (File file, int quality) throws Error
     {
         var stream = file.replace (null, false, FileCreateFlags.NONE, null);
         var writer = new PDFWriter (stream);
@@ -412,9 +397,8 @@ public class Book
                 /* Try if JPEG compression is better */
                 if (depth > 1)
                 {
-                    size_t jpeg_length;
-                    var jpeg_data = compress_jpeg (image, out jpeg_length);
-                    if (jpeg_length < compressed_data.length)
+                    var jpeg_data = compress_jpeg (image, quality, page.get_dpi ());
+                    if (jpeg_data.length < compressed_data.length)
                     {
                         filter = "DCTDecode";
                         data = jpeg_data;
@@ -484,7 +468,7 @@ public class Book
         var info_number = writer.start_object ();
         writer.write_string ("%u 0 obj\n".printf (info_number));
         writer.write_string ("<<\n");
-        writer.write_string ("/Creator (Simple Scan %s)\n".printf (Config.VERSION));
+        writer.write_string ("/Creator (Simple Scan %s)\n".printf (VERSION));
         writer.write_string (">>\n");
         writer.write_string ("endobj\n");
 
@@ -508,20 +492,20 @@ public class Book
         writer.write_string ("%%EOF\n");
     }
 
-    public void save (string type, File file) throws Error
+    public void save (string type, int quality, File file) throws Error
     {
         switch (type)
         {
         case "jpeg":
         case "png":
         case "tiff":
-            save_multi_file (type, file);
+            save_multi_file (type, quality, file);
             break;
         case "ps":
             save_ps (file);
             break;
         case "pdf":
-            save_pdf (file);
+            save_pdf (file, quality);
             break;
         }
     }
-- 
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