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/*
* Copyright (C) 2006, 2008-2009 by the Widelands Development Team
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "sound/songset.h"
#include <utility>
#include "base/log.h"
#include "io/fileread.h"
#include "io/filesystem/layered_filesystem.h"
#include "sound/sound_handler.h"
/// Prepare infrastructure for reading song files from disk
Songset::Songset() : m_(nullptr), rwops_(nullptr) {}
/// Close and delete all songs to avoid memory leaks.
Songset::~Songset()
{
songs_.clear();
if (m_)
Mix_FreeMusic(m_);
if (rwops_) {
SDL_FreeRW(rwops_);
fr_.close();
}
}
/** Append a song to the end of the songset
* \param filename the song to append
* \note The \ref current_song will unconditionally be set to the songset's
* first song. If you do not want to disturb the (linear) playback order then
* \ref register_song() all songs before you start playing
*/
void Songset::add_song(const std::string & filename) {
songs_.push_back(filename);
current_song_ = songs_.begin();
}
/** Get a song from the songset. Depending on
* \ref SoundHandler::sound_random_order, the selection will either be random
* or linear (after last song, will start again with first).
* \return a pointer to the chosen song; 0 if none was found, music is disabled
* or an error occurred
*/
Mix_Music * Songset::get_song()
{
std::string filename;
if (g_sound_handler.get_disable_music() || songs_.empty())
return nullptr;
if (g_sound_handler.random_order_)
filename = songs_.at(g_sound_handler.rng_.rand() % songs_.size());
else {
if (current_song_ == songs_.end())
current_song_ = songs_.begin();
filename = *(current_song_++);
}
// First, close the previous song and remove it from memory
if (m_) {
Mix_FreeMusic(m_);
m_ = nullptr;
}
if (rwops_) {
SDL_FreeRW(rwops_);
rwops_ = nullptr;
fr_.close();
}
// Then open the new song
if (fr_.try_open(*g_fs, filename)) {
if (!(rwops_ = SDL_RWFromMem(fr_.data(0), fr_.get_size()))) {
fr_.close(); // fr_ should be Open iff rwops_ != 0
return nullptr;
}
}
else
return nullptr;
if (rwops_)
m_ = Mix_LoadMUS_RW(rwops_, 0);
if (m_)
log("SoundHandler: loaded song \"%s\"\n", filename.c_str());
else {
log("SoundHandler: loading song \"%s\" failed!\n", filename.c_str());
log("SoundHandler: %s\n", Mix_GetError());
}
return m_;
}
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