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// image.tcc
// robert - programme du robot 2005. {{{
//
// Copyright (C) 2005 Nicolas Schodet
//
// Robot APB Team/Efrei 2005.
//        Web: http://assos.efrei.fr/robot/
//      Email: robot AT efrei DOT fr
//
// 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 2 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, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// }}}

/// Constructeur de copie, copy-on-write.
inline
Image::Image (const Image &image)
    : rep_ (image.rep_->copyRef ())
{
}

/// Destructeur.
inline
Image::~Image (void)
{
    rep_->release ();
}

/// R�cup�re la taille de l'image.
inline
void
Image::getSize (int &width, int &height) const
{
    width = rep_->width_;
    height = rep_->height_;
}

/// Retourne le format des pixels.
inline
Image::PixelFormat
Image::getPixelFormat (void) const
{
    return rep_->pixelFormat_;
}

/// Retourne le nombre d'octets par pixels.
inline
unsigned
Image::getBytePerPixel (void) const
{
    return rep_->bpp_;
}

/// Retourne le nombre d'octets par pixels pour un format donn�e.
inline
unsigned
Image::getBytePerPixel (Image::PixelFormat pixelFormat)
{
    return pixelFormat == Image::yuv422 ? 2 : 3;
}

/// Retourne la taille du tampon m�moire.
inline
unsigned
Image::getBufSize (void) const
{
    return rep_->bufSize_;
}

/// Retourne la taille du tampon m�moire pour une image donn�e.
inline
unsigned
Image::getBufSize (int width, int height, Image::PixelFormat pixelFormat)
{
    return width * height * Image::getBytePerPixel (pixelFormat);
}

/// R�cup�re un pointeur vers l'image.
inline
const uint8_t *
Image::getBuf (void) const
{
    return rep_->getBuf ();
}

/// R�cup�re un pointeur mutable vers l'image. D�clenche �ventuellement
/// une copie.
inline
uint8_t *
Image::getMutableBuf (void)
{
    if (rep_->references_ != 0)
	rep_ = rep_->copy ();
    return rep_->getBuf ();
}

/// R�cup�re le buffer.
inline
uint8_t *
Image::Rep::getBuf (void)
{
    return reinterpret_cast<uint8_t *> (this + 1);
}

/// Constructeur, interdit.
inline
Image::Rep::Rep (void)
{
}