#include "VlcMediaListPlayer.h"

#if USE_VLC

#include <assert.h>

#ifdef _WIN32
#include <basetsd.h>
typedef SSIZE_T ssize_t;
#endif
#include <vlc/vlc.h>

#include <QDebug>
#include <QFileInfo>
#include <QImage>

#include "VlcMediaPlayer.h"

void* MediaListMediaCallbakLocak(void* opaque, void** planes) {
    VlcMediaListPlayer* player = reinterpret_cast<VlcMediaListPlayer*>(opaque);
    player->mutx_.lock();
    *planes = player->pixels_.data();
    return nullptr;
}

void MediaListMediaCallbakUnLocak(void* opaque, void* picture, void* const* planes) {
    VlcMediaListPlayer* player = reinterpret_cast<VlcMediaListPlayer*>(opaque);
    
    unsigned char* data = (unsigned char*)*planes;
    QImage image(data, player->videoWidth_, player->videoHeight_, QImage::Format_ARGB32);
    emit player->VideoDataOutput(std::move(image));
    player->mutx_.unlock();
}

void MediaListMediaCallbakDisplay(void* opaque, void* picture) {
   
}


void OnMediaListVLCEvent(const libvlc_event_t* event, void* data) {
    VlcMediaListPlayer* player = reinterpret_cast<VlcMediaListPlayer*>(data);
    switch (event->type) {
    case libvlc_MediaListPlayerStopped:
        player->Stop();
        break;

    case libvlc_MediaPlayerEndReached:
        emit player->Stopped();
        break;

    case libvlc_MediaPlayerStopped:
        emit player->Stopped();
        break;

    case libvlc_MediaPlayerPositionChanged: {
        float pos = event->u.media_player_position_changed.new_position;
        player->OnPostionChangedCallback(pos);
    }
        break;

    case libvlc_MediaPlayerTimeChanged: {
        qint64 pos = event->u.media_player_time_changed.new_time;
        player->OnTimeChangedCallback(pos);

    }
        break;
    default:
        break;
    }
}


VlcMediaListPlayer::VlcMediaListPlayer() {
    libvlc_instance_t* inst = VlcMediaPlayer::GetVLCInstance();
    vlcListPlayer_ = libvlc_media_list_player_new(inst);
    vlcPlayer_ = libvlc_media_player_new(inst);

    libvlc_video_set_key_input(vlcPlayer_, false);
    libvlc_video_set_mouse_input(vlcPlayer_, false);
    libvlc_audio_set_volume(vlcPlayer_, int(200));

    videoWidth_ = 1920;
    videoHeight_ = 1080;
    pixels_.resize(videoWidth_ * videoHeight_ * 4, 0);

    libvlc_video_set_callbacks(vlcPlayer_, MediaListMediaCallbakLocak, MediaListMediaCallbakUnLocak,
        MediaListMediaCallbakDisplay, this);
    libvlc_video_set_format(vlcPlayer_, "RV32", videoWidth_, videoHeight_, videoWidth_ * 4);

    libvlc_event_manager_t* vlc_evt_man = libvlc_media_player_event_manager(vlcPlayer_);
    libvlc_event_attach(vlc_evt_man, libvlc_MediaPlayerPlaying, ::OnMediaListVLCEvent, this);
    libvlc_event_attach(vlc_evt_man, libvlc_MediaPlayerPositionChanged, ::OnMediaListVLCEvent, this);
    libvlc_event_attach(vlc_evt_man, libvlc_MediaPlayerTimeChanged, ::OnMediaListVLCEvent, this);
    libvlc_event_attach(vlc_evt_man, libvlc_MediaPlayerStopped, ::OnMediaListVLCEvent, this);
    libvlc_event_attach(vlc_evt_man, libvlc_MediaPlayerEndReached, ::OnMediaListVLCEvent, this);
    libvlc_event_attach(vlc_evt_man, libvlc_MediaListPlayerStopped, ::OnMediaListVLCEvent, this);

    vlcMediaList_ = libvlc_media_list_new(inst);

   // libvlc_media_list_player_set_media_list(vlcListPlayer_, vlcMediaList_);
}

VlcMediaListPlayer::~VlcMediaListPlayer() {
    if (nullptr != vlcMediaList_) {
        libvlc_media_list_release(vlcMediaList_);
        vlcMediaList_ = nullptr;
    }
    if (nullptr != vlcPlayer_) {
        libvlc_media_player_release(vlcPlayer_);
        vlcPlayer_ = nullptr;
    }
    if (nullptr != vlcListPlayer_) {
        libvlc_media_list_player_release(vlcListPlayer_);
        vlcListPlayer_ = nullptr;
    }
}


void VlcMediaListPlayer::SetResolution(int width, int height) {
    videoWidth_ = width;
    videoHeight_ = height;
    pixels_.resize(videoWidth_ * videoHeight_ * 4, 0);

    libvlc_video_set_format(vlcPlayer_, "RV32", videoWidth_, videoHeight_, videoWidth_ * 4);
}

void VlcMediaListPlayer::SetMediaList(const QStringList& paths) {
    libvlc_instance_t* inst = VlcMediaPlayer::GetVLCInstance();
    for (int i = 0; i < paths.size(); i++) {
        const QString& path = paths[i];
        libvlc_media_t* media = libvlc_media_new_path(inst, path.toUtf8().replace("/", "\\").data());
        libvlc_media_list_add_media(vlcMediaList_, media);
        libvlc_media_parse(media);
        libvlc_media_release(media);
    }

    libvlc_media_list_player_set_media_list(vlcListPlayer_, vlcMediaList_);
    libvlc_media_list_player_set_media_player(vlcListPlayer_, vlcPlayer_);
}

bool VlcMediaListPlayer::Play() {
    libvlc_media_list_player_play(vlcListPlayer_);
    return true;
}

void VlcMediaListPlayer::Stop() {
    libvlc_media_list_player_stop(vlcListPlayer_);
}

bool VlcMediaListPlayer::IsPlaying() const {
    if (nullptr != vlcPlayer_) {
        return 1 == libvlc_media_list_player_is_playing(vlcListPlayer_);
    }

    return false;
}

void VlcMediaListPlayer::SetPlayMode(PlayMode model) {
    libvlc_media_list_player_set_playback_mode(vlcListPlayer_, static_cast<libvlc_playback_mode_t>(model));
}

void VlcMediaListPlayer::OnPostionChangedCallback(float pos) {}

void VlcMediaListPlayer::OnTimeChangedCallback(qint64 pos) {
    emit TimeChanged(pos);
}

#endif USE_VLC