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-rw-r--r--mg_playlist.c368
1 files changed, 0 insertions, 368 deletions
diff --git a/mg_playlist.c b/mg_playlist.c
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--- a/mg_playlist.c
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-/*!
- * \file mg_playlist.c
- * \brief defines functions to be executed on playlists for the vdr muggle plugin
- *
- * \version $Revision: 1.6 $
- * \date $Date$
- * \author Ralf Klueber, Lars von Wedel, Andreas Kellner
- * \author Responsible author: $Author$
- *
- * This file implements the class mgPlaylist which maintains a playlist
- * and supports editing (e.g. adding or moving tracks), navigating it
- * (e.g. obtaining arbitrary items or accessing them sequentially) or
- * making it persistent in some database.
- */
-
-#include <stdio.h>
-#include "mg_playlist.h"
-#include "mg_tools.h"
-
-#include <vector>
-#include <iostream>
-
-mgPlaylist::mgPlaylist()
-{
- m_current_idx = 0;
-
- char *buffer;
- asprintf( &buffer, "Playlist-%ld", random() );
-
- m_listname = buffer;
-}
-
-mgPlaylist::mgPlaylist(std::string listname)
-{
- m_current_idx = 0;
- m_listname = listname;
-}
-
-/* ==== destructor ==== */
-
-mgPlaylist::~mgPlaylist()
-{
-}
-
-mgPlaylist::LoopMode mgPlaylist::toggleLoopMode( )
-{
- switch( m_loop_mode )
- {
- case LM_NONE:
- {
- m_loop_mode = LM_SINGLE;
- } break;
- case LM_SINGLE:
- {
- m_loop_mode = LM_FULL;
- } break;
- case LM_FULL:
- {
- m_loop_mode = LM_NONE;
- } break;
- default:
- {
- m_loop_mode = LM_NONE;
- }
- }
-
- return m_loop_mode;
-}
-
-mgPlaylist::ShuffleMode mgPlaylist::toggleShuffleMode( )
-{
- switch( m_shuffle_mode )
- {
- case SM_NONE:
- {
- m_shuffle_mode = SM_NORMAL;
- } break;
- case SM_NORMAL:
- {
- m_shuffle_mode = SM_PARTY;
- } break;
- case SM_PARTY:
- {
- m_shuffle_mode = SM_NONE;
- } break;
- default:
- {
- m_shuffle_mode = SM_NONE;
- }
- }
-
- return m_shuffle_mode;
-}
-
-void mgPlaylist::initialize()
-{
- m_current_idx = 0;
- m_loop_mode = mgPlaylist::LM_NONE;
- m_shuffle_mode = mgPlaylist::SM_NONE;
-}
-
-/* ==== add/remove tracks ==== */
-
-/* adds a song at the end of the playlist */
-void mgPlaylist::append(mgContentItem* item)
-{
- m_list.push_back(item);
-}
-
-/* append a list of tracks at the end of the playlist */
-void mgPlaylist::appendList( std::vector<mgContentItem*> *tracks )
-{
- std::vector<mgContentItem*>::iterator iter;
-
- mgDebug( 3, "Adding %d tracks to the playlist", tracks->size() );
-
- for( iter = tracks->begin(); iter != tracks->end(); iter++ )
- {
- m_list.push_back(*iter);
- }
-
- // TODO: why is this vector cleared? shouldn't the caller take care of this? LVW
- tracks->clear();
-}
-
-/* add a song after 'position' */
-void mgPlaylist::insert( mgContentItem* item, unsigned int position )
-{
- if( position >= m_list.size() )
- {
- m_list.push_back(item);
- }
- else
- {
- m_list.insert( m_list.begin() + position, item );
- }
-}
-
-bool mgPlaylist::remove( unsigned pos )
-{
- bool result = false;
-
- if( pos != m_current_idx )
- {
- result = mgTracklist::remove( pos );
-
- if( result && pos < m_current_idx )
- {
- m_current_idx --;
- }
- }
-
- return result;
-}
-
-void mgPlaylist::clear()
-{
- // TODO: who takes care of memory allocation/deallocation of mgItems?
-
- std::vector<mgContentItem*>::iterator iter;
-
- for( iter = m_list.begin(); iter != m_list.end(); iter++ )
- { // delete each item in the list
- delete *iter;
- }
-
- // finally clear the list itself
- m_list.clear();
-
- // reset index
- m_current_idx = 0;
-}
-
-void mgPlaylist::move( unsigned from, unsigned to )
-{
- std::vector<mgContentItem*>::iterator from_iter = m_list.begin() + from;
- std::vector<mgContentItem*>::iterator to_iter = m_list.begin() + to;
-
- m_list.insert( to_iter, *from_iter);
- m_list.erase( from_iter );
-
- if( from < m_current_idx )
- {
- m_current_idx--;
- }
- if( to < m_current_idx )
- {
- m_current_idx++;
- }
-}
-
-std::string mgPlaylist::getListname()
-{
- return m_listname;
-}
-
-void mgPlaylist::setListname(std::string name)
-{
- m_listname = name;
-}
-
-// returns current index in the playlist
-unsigned mgPlaylist::getIndex() const
-{
- return m_current_idx;
-}
-
-unsigned long mgPlaylist::getCompletedLength()
-{
- unsigned long result = 0;
-
- std::vector<mgContentItem*>::iterator iter;
- for( iter = m_list.begin(); iter != m_list.begin() + m_current_idx; iter++ )
- { // each item in the list
- result += (*iter)->getLength();
- }
-
- return result;
-}
-
-// returns the current item of the list
-mgContentItem* mgPlaylist::getCurrent()
-{
- mgContentItem *result;
-
- if( 0 <= m_current_idx && m_current_idx < m_list.size() )
- {
- result = *( m_list.begin() + m_current_idx );
- }
- else
- {
- result = &(mgContentItem::UNDEFINED);
- }
-
- return result;
-}
-
-// skip to the nth track from the playlist
-bool mgPlaylist::gotoPosition(unsigned int position)
-{
- bool result = false;
-
- if( position < m_list.size() )
- {
- m_current_idx = position;
- result = true;
- }
-
- return result;
-}
-
-// proceeds to the next item
-bool mgPlaylist::skipFwd()
-{
- bool result = false;
-
- if( m_loop_mode == mgPlaylist::LM_SINGLE )
- {
- result = true;
- }
- else
- {
- if( m_current_idx + 1 < m_list.size() ) // unless loop mode
- {
- m_current_idx ++;
- result = true;
- }
- else
- {
- if( m_loop_mode == mgPlaylist::LM_FULL )
- {
- m_current_idx = 0;
- result = true;
- }
- else
- {
- result = false;
- }
- }
- }
-
- // if we are already at the end -- just do nothing unless in loop mode
- return result;
-}
-
-// goes back to the previous item
-bool mgPlaylist::skipBack()
-{
- bool result = false;
-
- if( m_loop_mode == mgPlaylist::LM_SINGLE )
- {
- result = true;
- }
- else
- {
- if( m_current_idx > 0 )
- {
- m_current_idx --;
- result = true;
- }
- else
- {
- if( m_loop_mode == mgPlaylist::LM_FULL )
- {
- m_current_idx = m_list.size() -1;
- result = true;
- }
- else
- {
- result = false;
- }
- }
- }
- // if we are at the beginning -- just do nothing unless in loop mode
- return result;
-}
-
-// get next track, do not update data structures
-mgContentItem* mgPlaylist::sneakNext()
-{
- mgContentItem* result;
-
- // TODO: a bug?
- if( m_current_idx + 1 <= m_list.size() ) // unless loop mode
- {
- result = *(m_list.begin() + m_current_idx + 1);
- }
- else
- {
- if( m_loop_mode == mgPlaylist::LM_FULL )
- {
- result = *(m_list.begin());
- }
- else
- {
- return &(mgContentItem::UNDEFINED);
- }
- }
-
- return result;
-}
-
-bool mgPlaylist::exportM3U( std::string m3u_file )
-{
- std::vector<mgContentItem*>::iterator iter;
- bool result = true;
-
- // open a file for writing
- FILE *listfile = fopen( m3u_file.c_str(), "w" );
-
- if( !listfile )
- {
- return false;
- }
-
- fprintf( listfile, "#EXTM3U" );
-
- for( iter = m_list.begin(); iter != m_list.end(); iter++ )
- { // each item in the list
- fprintf( listfile, "#EXTINF:%d,%s\n", (*iter)->getLength(), (*iter)->getLabel().c_str() );
- fprintf( listfile, "%s", (*iter)->getSourceFile().c_str() );
- }
-
- fclose( listfile );
-
- return result;
-}
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