377 lines
9.5 KiB
C++
377 lines
9.5 KiB
C++
/*
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* Strawberry Music Player
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* This file was part of Clementine
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* Copyright 2017-2018, Jonas Kvinge <jonas@jkvinge.net>
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*
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* Strawberry is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "config.h"
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#include <stddef.h>
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#include <vlc/vlc.h>
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#include <QtGlobal>
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#include <QMutex>
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#include <QByteArray>
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#include <QUrl>
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#include "core/timeconstants.h"
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#include "core/taskmanager.h"
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#include "core/logging.h"
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#include "engine_fwd.h"
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#include "enginebase.h"
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#include "enginetype.h"
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#include "vlcengine.h"
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#include "vlcscopedref.h"
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VLCEngine *VLCEngine::sInstance = nullptr;
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VLCEngine::VLCEngine(TaskManager *task_manager)
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: instance_(nullptr),
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player_(nullptr),
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state_(Engine::Empty),
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scope_data_(4096)
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{
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Init();
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}
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VLCEngine::~VLCEngine() {
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libvlc_media_player_stop(player_);
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libvlc_media_player_release(player_);
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libvlc_release(instance_);
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HandleErrors();
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}
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bool VLCEngine::Init() {
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type_ = Engine::VLC;
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/* FIXME: Do we need this?
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static const char *const args[] = {
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"-I", "dummy", // Don't use any interface
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"--ignore-config", // Don't use VLC's config
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"--extraintf=logger", // log anything
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"--verbose=2", // be much more verbose then normal for debugging purpose
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// Our scope plugin
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"--audio-filter=strawberry_scope",
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"--no-plugins-cache",
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// Try to stop audio stuttering
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"--file-caching=500", // msec
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"--http-caching=500",
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#ifdef HAVE_ALSA_
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"--aout=alsa", // The default, pulseaudio, is buggy
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#endif
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};
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*/
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// Create the VLC instance
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instance_ = libvlc_new(0, nullptr);
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//instance_ = libvlc_new(sizeof(args) / sizeof(args[0]), args);
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HandleErrors();
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// Create the media player
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player_ = libvlc_media_player_new(instance_);
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HandleErrors();
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// Add event handlers
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libvlc_event_manager_t *player_em = libvlc_media_player_event_manager(player_);
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HandleErrors();
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AttachCallback(player_em, libvlc_MediaPlayerEncounteredError, StateChangedCallback);
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AttachCallback(player_em, libvlc_MediaPlayerNothingSpecial, StateChangedCallback);
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AttachCallback(player_em, libvlc_MediaPlayerOpening, StateChangedCallback);
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AttachCallback(player_em, libvlc_MediaPlayerBuffering, StateChangedCallback);
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AttachCallback(player_em, libvlc_MediaPlayerPlaying, StateChangedCallback);
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AttachCallback(player_em, libvlc_MediaPlayerPaused, StateChangedCallback);
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AttachCallback(player_em, libvlc_MediaPlayerStopped, StateChangedCallback);
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AttachCallback(player_em, libvlc_MediaPlayerEndReached, StateChangedCallback);
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HandleErrors();
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sInstance = this;
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return true;
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}
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bool VLCEngine::Load(const QUrl &url, Engine::TrackChangeFlags change, bool force_stop_at_end, quint64 beginning_nanosec, qint64 end_nanosec) {
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// Create the media object
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VlcScopedRef<libvlc_media_t> media(libvlc_media_new_location(instance_, url.toEncoded().constData()));
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libvlc_media_player_set_media(player_, media);
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return true;
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}
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bool VLCEngine::Play(quint64 offset_nanosec) {
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// Set audio output
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if (!output_.isEmpty() || output_ != "auto") {
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int result = libvlc_audio_output_set(player_, output_.toUtf8().constData());
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if (result != 0) qLog(Error) << "Failed to set output.";
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}
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// Set audio device
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if (device_.isValid() && device_.type() == QVariant::String && !device_.toString().isEmpty()) {
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libvlc_audio_output_device_set(player_, nullptr, device_.toString().toLocal8Bit().data());
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}
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int result = libvlc_media_player_play(player_);
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if (result != 0) return false;
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Seek(offset_nanosec);
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return true;
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}
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void VLCEngine::Stop(bool stop_after) {
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libvlc_media_player_stop(player_);
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HandleErrors();
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}
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void VLCEngine::Pause() {
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libvlc_media_player_pause(player_);
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HandleErrors();
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}
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void VLCEngine::Unpause() {
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libvlc_media_player_play(player_);
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HandleErrors();
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}
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void VLCEngine::Seek(quint64 offset_nanosec) {
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int offset = (offset_nanosec / kNsecPerMsec);
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uint len = length();
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if (len == 0) return;
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float pos = float(offset) / len;
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libvlc_media_player_set_position(player_, pos);
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HandleErrors();
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}
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void VLCEngine::SetVolumeSW(uint percent) {
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libvlc_audio_set_volume(player_, percent);
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HandleErrors();
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}
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qint64 VLCEngine::position_nanosec() const {
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if (state() == Engine::Empty) return 0;
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const qint64 result = (position() * kNsecPerMsec);
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return qint64(qMax(0ll, result));
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}
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qint64 VLCEngine::length_nanosec() const {
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if (state() == Engine::Empty) return 0;
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const qint64 result = (end_nanosec_ - beginning_nanosec_);
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if (result > 0) {
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return result;
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}
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else {
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// Get the length from the pipeline if we don't know.
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return (length() * kNsecPerMsec);
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}
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}
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const Engine::Scope &VLCEngine::Scope() {
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QMutexLocker l(&scope_mutex_);
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// Leave the scope unchanged if there's not enough data
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if (scope_data_.size() < uint(kScopeSize))
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return scope_;
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// Take the samples off the front of the circular buffer
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for (uint i=0 ; i<uint(kScopeSize) ; ++i)
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scope_[i] = scope_data_[i] * (1 << 15);
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// Remove the samples from the buffer. Unfortunately I think this is O(n) :(
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scope_data_.rresize(qMax(0, int(scope_data_.size()) - kScopeSize*2));
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return scope_;
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}
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EngineBase::OutputDetailsList VLCEngine::GetOutputsList() const {
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OutputDetailsList ret;
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PluginDetailsList plugins = GetPluginList();
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for (const PluginDetails &plugin : plugins) {
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OutputDetails output;
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output.name = plugin.name;
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output.description = plugin.description;
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if (plugin.name == "auto") output.iconname = "soundcard";
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else if ((plugin.name == "alsa")||(plugin.name == "oss")) output.iconname = "alsa";
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else if (plugin.name== "jack") output.iconname = "jack";
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else if (plugin.name == "pulse") output.iconname = "pulseaudio";
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else if (plugin.name == "afile") output.iconname = "document-new";
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else output.iconname = "soundcard";
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ret.append(output);
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}
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return ret;
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}
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bool VLCEngine::CustomDeviceSupport(const QString &name) {
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return (name == "auto" ? false : true);
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}
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uint VLCEngine::position() const {
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bool is_playing = libvlc_media_player_is_playing(player_);
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HandleErrors();
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if (!is_playing) return 0;
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float pos = libvlc_media_player_get_position(player_);
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HandleErrors();
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return (pos * length());
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}
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uint VLCEngine::length() const {
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bool is_playing = libvlc_media_player_is_playing(player_);
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HandleErrors();
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if (!is_playing) return 0;
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libvlc_time_t len = libvlc_media_player_get_length(player_);
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HandleErrors();
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return len;
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}
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bool VLCEngine::CanDecode(const QUrl &url) {
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// TODO
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return true;
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}
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void VLCEngine::SetScopeData(float *data, int size) {
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if (!sInstance) return;
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QMutexLocker l(&sInstance->scope_mutex_);
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// This gets called by our VLC plugin. Just push the data on to the end of the circular buffer and let it get consumed by scope()
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for (int i=0 ; i<size ; ++i) {
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sInstance->scope_data_.push_back(data[i]);
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}
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}
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void VLCEngine::HandleErrors() const {
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}
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void VLCEngine::AttachCallback(libvlc_event_manager_t *em, libvlc_event_type_t type, libvlc_callback_t callback) {
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libvlc_event_attach(em, type, callback, this);
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HandleErrors();
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}
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void VLCEngine::StateChangedCallback(const libvlc_event_t *e, void *data) {
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VLCEngine *engine = reinterpret_cast<VLCEngine*>(data);
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switch (e->type) {
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case libvlc_MediaPlayerNothingSpecial:
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case libvlc_MediaPlayerStopped:
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case libvlc_MediaPlayerEncounteredError:
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engine->state_ = Engine::Empty;
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break;
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case libvlc_MediaPlayerOpening:
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case libvlc_MediaPlayerBuffering:
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case libvlc_MediaPlayerPlaying:
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engine->state_ = Engine::Playing;
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break;
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case libvlc_MediaPlayerPaused:
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engine->state_ = Engine::Paused;
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break;
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case libvlc_MediaPlayerEndReached:
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engine->state_ = Engine::Idle;
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emit engine->TrackEnded();
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return; // Don't emit state changed here
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}
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emit engine->StateChanged(engine->state_);
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}
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EngineBase::PluginDetailsList VLCEngine::GetPluginList() const {
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PluginDetailsList ret;
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libvlc_audio_output_t *audio_output_list = libvlc_audio_output_list_get(instance_);
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{
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PluginDetails details;
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details.name = "auto";
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details.description = "Automatically detected";
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ret << details;
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}
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for (libvlc_audio_output_t *audio_output = audio_output_list ; audio_output ; audio_output = audio_output->p_next) {
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PluginDetails details;
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details.name = QString::fromUtf8(audio_output->psz_name);
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details.description = QString::fromUtf8(audio_output->psz_description);
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ret << details;
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}
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libvlc_audio_output_list_release(audio_output_list);
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return ret;
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}
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void VLCEngine::GetDevicesList(QString output) const {
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libvlc_audio_output_device_t *audio_output_device_list = libvlc_audio_output_device_list_get(instance_, output_.toUtf8().constData());
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for (libvlc_audio_output_device_t *audio_device = audio_output_device_list ; audio_device ; audio_device = audio_device->p_next) {
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qLog(Debug) << audio_device->psz_device << audio_device->psz_description;
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}
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libvlc_audio_output_device_list_release(audio_output_device_list);
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}
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