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/*
* Copyright (C) 2010, Nokia
*
* 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.
*
* Authors:
* Philip Van Hoof <philip@codeminded.be>
*/
#include "config.h"
#include <QFile>
#include <QBuffer>
#include <QImageReader>
#include <QImageWriter>
#include <QCoreApplication>
#include <QColor>
#include <QPainter>
#include <glib.h>
#include <stdlib.h>
G_BEGIN_DECLS
static QCoreApplication *app = NULL;
static gint max_width_in_bytes = 0;
void
media_art_plugin_init (gint max_width)
{
static int argc = 1;
static char *argv[2] = { (char*) "libmediaart", NULL };
g_return_if_fail (max_width >= 0);
max_width_in_bytes = max_width;
if (QCoreApplication::instance()) {
// avoid a new instance if already running inside a qt app
return;
}
app = new QCoreApplication (argc, argv);
}
void
media_art_plugin_shutdown (void)
{
// Apparently isn't destructing a QApplication something you should do, as
// QApplication is designed to work on stack of the main() function.
// delete app;
}
gboolean
media_art_file_to_jpeg (const gchar *filename,
const gchar *target,
GError **error)
{
if (max_width_in_bytes < 0) {
g_debug ("Not saving album art from file, disabled in config");
return TRUE;
}
/* TODO: Add resizing support */
/* TODO: Add error reporting */
QFile file (filename);
if (!file.open (QIODevice::ReadOnly)) {
g_message ("Could not get QFile from file: '%s'", filename);
return FALSE;
}
QByteArray array = file.readAll ();
QBuffer buffer (&array);
buffer.open (QIODevice::ReadOnly);
QImageReader reader (&buffer);
if (!reader.canRead ()) {
g_message ("Could not get QImageReader from file: '%s', reader.canRead was FALSE",
filename);
return FALSE;
}
QImage image1;
image1 = reader.read ();
if (image1.hasAlphaChannel ()) {
QImage image2 (image1.size(), QImage::Format_RGB32);
image2.fill (QColor(Qt::black).rgb());
QPainter painter (&image2);
painter.drawImage (0, 0, image1);
image2.save (QString (target), "jpeg");
} else {
image1.save (QString (target), "jpeg");
}
return TRUE;
}
gboolean
media_art_buffer_to_jpeg (const unsigned char *buffer,
size_t len,
const gchar *buffer_mime,
const gchar *target,
GError **error)
{
if (max_width_in_bytes < 0) {
g_debug ("Not saving album art from buffer, disabled in config");
return TRUE;
}
/* FF D8 FF are the three first bytes of JPeg images */
if (max_width_in_bytes == 0 &&
(g_strcmp0 (buffer_mime, "image/jpeg") == 0 ||
g_strcmp0 (buffer_mime, "JPG") == 0) &&
(buffer && len > 2 && buffer[0] == 0xff && buffer[1] == 0xd8 && buffer[2] == 0xff)) {
g_debug ("Saving album art using raw data as uri:'%s'", target);
if (!g_file_set_contents (target, (const gchar*) buffer, (gssize) len, error)) {
return FALSE;
}
} else {
QImageReader *reader = NULL;
QByteArray array;
/* TODO: Add resizing support */
/* TODO: Add error reporting */
array = QByteArray ((const char *) buffer, (int) len);
QBuffer qbuffer (&array);
qbuffer.open (QIODevice::ReadOnly);
if (buffer_mime != NULL) {
reader = new QImageReader (&qbuffer, QByteArray (buffer_mime));
} else {
QByteArray format = QImageReader::imageFormat (&qbuffer);
if (!format.isEmpty ()) {
reader = new QImageReader (&qbuffer, format);
}
}
if (!reader) {
g_message ("Could not get QImageReader from buffer");
return FALSE;
}
QImage image1;
image1 = reader->read ();
if (image1.hasAlphaChannel ()) {
QImage image2 (image1.size(), QImage::Format_RGB32);
image2.fill (QColor(Qt::black).rgb());
QPainter painter (&image2);
painter.drawImage (0, 0, image1);
image2.save (QString (target), "jpeg");
} else {
image1.save (QString (target), "jpeg");
}
delete reader;
}
return TRUE;
}
G_END_DECLS
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