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/*
* Copyright (C) 2013-2014 Jolla Ltd. <andrew.den.exter@jollamobile.com>
* Author: Philip Van Hoof <philip@codeminded.be>
* Author: Mingxiang Lin <paralmx@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <libtracker-common/tracker-common.h>
#include <libtracker-extract/tracker-extract.h>
static gboolean
get_img_resolution (const GFile *file,
gint64 *width,
gint64 *height)
{
GFileInputStream *stream;
GInputStream *inputstream;
GError *error = NULL;
char bfType[2] = { 0 };
uint w, h;
if (width) {
*width = 0;
}
if (height) {
*height = 0;
}
w = h = 0;
stream = g_file_read ((GFile *)file, NULL, &error);
if (error) {
g_message ("Could not read BMP file, %s", error->message);
g_clear_error (&error);
return FALSE;
}
inputstream = G_INPUT_STREAM (stream);
if (!g_input_stream_read (inputstream, bfType, 2, NULL, &error)) {
g_message ("Could not read BMP header from stream, %s", error ? error->message : "No error given");
g_clear_error (&error);
g_object_unref (stream);
return FALSE;
}
if (bfType[0] != 'B' || bfType[1] != 'M') {
g_message ("Expected BMP header to read 'B' or 'M', can not continue");
g_object_unref (stream);
return FALSE;
}
if (!g_input_stream_skip (inputstream, 16, NULL, &error)) {
g_message ("Could not read 16 bytes from BMP header, %s", error ? error->message : "No error given");
g_clear_error (&error);
g_object_unref (stream);
return FALSE;
}
if (!g_input_stream_read (inputstream, &w, sizeof (uint), NULL, &error)) {
g_message ("Could not read width from BMP header, %s", error ? error->message : "No error given");
g_clear_error (&error);
g_object_unref (stream);
return FALSE;
}
if (!g_input_stream_read (inputstream, &h, sizeof (uint), NULL, &error)) {
g_message ("Could not read height from BMP header, %s", error ? error->message : "No error given");
g_clear_error (&error);
g_object_unref (stream);
return FALSE;
}
if (width) {
*width = w;
}
if (height) {
*height = h;
}
g_input_stream_close (inputstream, NULL, NULL);
g_object_unref (stream);
return TRUE;
}
G_MODULE_EXPORT gboolean
tracker_extract_get_metadata (TrackerExtractInfo *info)
{
TrackerResource *image;
goffset size;
gchar *filename;
GFile *file;
gint64 width = 0, height = 0;
file = tracker_extract_info_get_file (info);
if (!file) {
return FALSE;
}
filename = g_file_get_path (file);
size = tracker_file_get_size (filename);
g_free (filename);
if (size < 14) {
/* Smaller than BMP header, can't be a real BMP file */
return FALSE;
}
image = tracker_resource_new (NULL);
tracker_resource_add_uri (image, "rdf:type", "nfo:Image");
tracker_resource_add_uri (image, "rdf:type", "nmm:Photo");
if (get_img_resolution (file, &width, &height)) {
if (width > 0) {
tracker_resource_set_int64 (image, "nfo:width", width);
}
if (height > 0) {
tracker_resource_set_int64 (image, "nfo:height", height);
}
}
tracker_extract_info_set_resource (info, image);
return TRUE;
}
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