musicdata.cpp

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// C/C++
#include <unistd.h> // for usleep()
 
// qt
#include <QApplication>
 
// MythTV
#include <libmythbase/mthreadpool.h>
#include <libmythbase/mythcorecontext.h>
#include <libmythbase/mythlogging.h>
#include <libmythmetadata/musicfilescanner.h>
#include <libmythmetadata/musicmetadata.h>
#include <libmythmetadata/musicutils.h>
#include <libmythui/mythmainwindow.h>
#include <libmythui/mythprogressdialog.h>
#include <libmythui/mythscreenstack.h>
 
// mythmusic
#include "musicdata.h"
#include "musicplayer.h"
 
// this is the global MusicData object shared thoughout MythMusic
MusicData  *gMusicData = nullptr;
 
void SendStringListThread::run()
{
    gCoreContext->SendReceiveStringList(m_strList);
}
 
MusicData::~MusicData(void)
{
    if (m_all_playlists)
    {
        delete m_all_playlists;
        m_all_playlists = nullptr;
    }
 
    if (m_all_music)
    {
        delete m_all_music;
        m_all_music = nullptr;
    }
 
    if (m_all_streams)
    {
        delete m_all_streams;
        m_all_streams = nullptr;
    }
}
 
void MusicData::scanMusic (void)
{
    QStringList strList("SCAN_MUSIC");
    auto *thread = new SendStringListThread(strList);
    MThreadPool::globalInstance()->start(thread, "Send SCAN_MUSIC");
 
    LOG(VB_GENERAL, LOG_INFO, "Requested a music file scan");
}
 
void MusicData::reloadMusic(void) const
{
    if (!m_all_music || !m_all_playlists)
        return;
 
    MythScreenStack *popupStack = GetMythMainWindow()->GetStack("popup stack");
    QString message = tr("Rebuilding music tree");
 
    auto *busy = new MythUIBusyDialog(message, popupStack, "musicscanbusydialog");
 
    if (busy->Create())
        popupStack->AddScreen(busy, false);
    else
        busy = nullptr;
 
    // TODO make it so the player isn't interupted
    // for the moment stop playing and try to resume after reloading
    bool wasPlaying = false;
    if (gPlayer->isPlaying())
    {
        gPlayer->savePosition();
        gPlayer->stop(true);
        wasPlaying = true;
    }
 
    m_all_music->startLoading();
    while (!m_all_music->doneLoading())
    {
        QCoreApplication::processEvents();
        usleep(50000);
    }
 
    m_all_playlists->resync();
 
    if (busy)
        busy->Close();
 
    if (wasPlaying)
        gPlayer->restorePosition();
}
 
void MusicData::loadMusic(void) const
{
    // only do this once
    if (m_initialized)
        return;
 
    MythScreenStack *popupStack = GetMythMainWindow()->GetStack("popup stack");
    QString message = QCoreApplication::translate("(MythMusicMain)",
                                      "Loading Music. Please wait ...");
 
    auto *busy = new MythUIBusyDialog(message, popupStack, "musicscanbusydialog");
    if (busy->Create())
        popupStack->AddScreen(busy, false);
    else
        busy = nullptr;
 
    // Set the various track formatting modes
    MusicMetadata::setArtistAndTrackFormats();
 
    auto *all_music = new AllMusic();
 
    //  Load all playlists into RAM (once!)
    auto *all_playlists = new PlaylistContainer(all_music);
 
    gMusicData->m_all_music = all_music;
    gMusicData->m_all_streams = new AllStream();
    gMusicData->m_all_playlists = all_playlists;
 
    gMusicData->m_initialized = true;
 
    while (!gMusicData->m_all_playlists->doneLoading()
           || !gMusicData->m_all_music->doneLoading())
    {
        QCoreApplication::processEvents();
        usleep(50000);
    }
 
    gPlayer->loadStreamPlaylist();
    gPlayer->loadPlaylist();
 
    if (busy)
        busy->Close();
}