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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#include "BitmapLoader.h"
#include "PixelFormat.h"
#include "Filterfliprgb.h"
#include "../base/Exception.h"
#include "../base/ScopeTimer.h"
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <iostream>
using namespace std;
using namespace boost;
namespace avg {
BitmapLoader * BitmapLoader::s_pBitmapLoader = 0;
void BitmapLoader::init(bool bBlueFirst)
{
#if (GLIB_MAJOR_VERSION <= 2 && GLIB_MINOR_VERSION < 36)
g_type_init();
#endif
// cerr << "BitmapLoader::init(" << bBlueFirst << ")" << endl;
if (s_pBitmapLoader != 0) {
delete s_pBitmapLoader;
}
s_pBitmapLoader = new BitmapLoader(bBlueFirst);
}
BitmapLoader* BitmapLoader::get()
{
AVG_ASSERT(s_pBitmapLoader != 0);
return s_pBitmapLoader;
}
BitmapLoader::BitmapLoader(bool bBlueFirst)
: m_bBlueFirst(bBlueFirst)
{
}
BitmapLoader::~BitmapLoader()
{
}
bool BitmapLoader::isBlueFirst() const
{
return m_bBlueFirst;
}
PixelFormat BitmapLoader::getDefaultPixelFormat(bool bAlpha)
{
if (bAlpha) {
if (m_bBlueFirst) {
return B8G8R8A8;
} else {
return R8G8B8A8;
}
} else {
if (m_bBlueFirst) {
return B8G8R8X8;
} else {
return R8G8B8X8;
}
}
}
static ProfilingZoneID GDKPixbufProfilingZone("gdk_pixbuf load", true);
static ProfilingZoneID ConvertProfilingZone("Format conversion", true);
static ProfilingZoneID RGBFlipProfilingZone("RGB<->BGR flip", true);
BitmapPtr BitmapLoader::load(const UTF8String& sFName, PixelFormat pf) const
{
AVG_ASSERT(s_pBitmapLoader != 0);
GError* pError = 0;
GdkPixbuf* pPixBuf;
{
ScopeTimer timer(GDKPixbufProfilingZone);
pPixBuf = gdk_pixbuf_new_from_file(sFName.c_str(), &pError);
}
if (!pPixBuf) {
string sErr = pError->message;
g_error_free(pError);
throw Exception(AVG_ERR_FILEIO, sErr);
}
IntPoint size = IntPoint(gdk_pixbuf_get_width(pPixBuf),
gdk_pixbuf_get_height(pPixBuf));
PixelFormat srcPF;
if (gdk_pixbuf_get_has_alpha(pPixBuf)) {
srcPF = R8G8B8A8;
} else {
srcPF = R8G8B8;
}
if (pf == NO_PIXELFORMAT) {
if (m_bBlueFirst) {
if (srcPF == R8G8B8A8) {
pf = B8G8R8A8;
} else if (srcPF == R8G8B8) {
pf = B8G8R8X8;
}
} else {
if (srcPF == R8G8B8A8) {
pf = R8G8B8A8;
} else if (srcPF == R8G8B8) {
pf = R8G8B8X8;
}
}
}
BitmapPtr pBmp(new Bitmap(size, pf, sFName));
{
ScopeTimer timer(ConvertProfilingZone);
int stride = gdk_pixbuf_get_rowstride(pPixBuf);
guchar* pSrc = gdk_pixbuf_get_pixels(pPixBuf);
BitmapPtr pSrcBmp(new Bitmap(size, srcPF, pSrc, stride, false));
{
ScopeTimer timer(RGBFlipProfilingZone);
if (pixelFormatIsBlueFirst(pf) != pixelFormatIsBlueFirst(srcPF)) {
FilterFlipRGB().applyInPlace(pSrcBmp);
}
}
pBmp->copyPixels(*pSrcBmp);
}
g_object_unref(pPixBuf);
return pBmp;
}
BitmapPtr loadBitmap(const UTF8String& sFName, PixelFormat pf)
{
return BitmapLoader::get()->load(sFName, pf);
}
}
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