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strawberry-audio-player-win.../src/engine/gstengine.cpp

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/***************************************************************************
* Copyright (C) 2003-2005 by Mark Kretschmann <markey@web.de> *
* Copyright (C) 2005 by Jakub Stachowski <qbast@go2.pl> *
* Copyright (C) 2006 Paul Cifarelli <paul@cifarelli.net> *
* *
* 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 Steet, Fifth Floor, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "config.h"
#include <stdlib.h>
#include <unistd.h>
#include <math.h>
#include <cmath>
#include <gst/gst.h>
#include <gst/pbutils/pbutils.h>
#include <iostream>
#include <memory>
#include <vector>
#include <QCoreApplication>
#include <QStandardPaths>
#include <QtConcurrentRun>
#include <QSettings>
#include <QDir>
#include <QFile>
#include <QRegExp>
#include <QTimer>
#include <QTimeLine>
#include "enginetype.h"
#include "enginebase.h"
#include "gstengine.h"
#include "devicefinder.h"
#include "gstenginepipeline.h"
#include "core/closure.h"
#include "core/logging.h"
#include "core/taskmanager.h"
#include "core/timeconstants.h"
#include "core/utilities.h"
#ifdef Q_OS_LINUX
#include "engine/alsadevicefinder.h"
#endif
#ifdef HAVE_LIBPULSE
#include "engine/pulsedevicefinder.h"
#endif
#ifdef Q_OS_DARWIN
#include "engine/osxdevicefinder.h"
#endif
#ifdef Q_OS_WIN32
#include "engine/directsounddevicefinder.h"
#endif
#include "settings/backendsettingspage.h"
using std::shared_ptr;
using std::vector;
const char *GstEngine::kAutoSink = "autoaudiosink";
const char *GstEngine::kALSASink = "alsasink";
const char *GstEngine::kOSSSink = "osssink";
const char *GstEngine::kOSS4Sink = "oss4sink";
const char *GstEngine::kJackAudioSink = "jackaudiosink";
const char *GstEngine::kPulseSink = "pulsesink";
const char *GstEngine::kA2DPSink = "a2dpsink";
const char *GstEngine::kAVDTPSink = "avdtpsink";
GstEngine::GstEngine(TaskManager *task_manager)
: Engine::Base(),
task_manager_(task_manager),
buffering_task_id_(-1),
latest_buffer_(nullptr),
equalizer_enabled_(false),
stereo_balance_(0.0f),
rg_enabled_(false),
rg_mode_(0),
rg_preamp_(0.0),
rg_compression_(true),
buffer_duration_nanosec_(1 * kNsecPerSec), // 1s
buffer_min_fill_(33),
mono_playback_(false),
seek_timer_(new QTimer(this)),
timer_id_(-1),
next_element_id_(0),
is_fading_out_to_pause_(false),
has_faded_out_(false),
scope_chunk_(0),
have_new_buffer_(false) {
seek_timer_->setSingleShot(true);
seek_timer_->setInterval(kSeekDelayNanosec / kNsecPerMsec);
connect(seek_timer_, SIGNAL(timeout()), SLOT(SeekNow()));
ReloadSettings();
#ifdef Q_OS_DARWIN
QDir resources_dir(mac::GetResourcesPath());
QString ca_cert_path = resources_dir.filePath("cacert.pem");
GError* error = nullptr;
tls_database_ = g_tls_file_database_new(ca_cert_path.toUtf8().data(), &error);
#endif
}
GstEngine::~GstEngine() {
EnsureInitialised();
current_pipeline_.reset();
#ifdef Q_OS_DARWIN
g_object_unref(tls_database_);
#endif
}
bool GstEngine::Init() {
SetEnvironment();
type_ = Engine::GStreamer;
initialising_ = QtConcurrent::run(this, &GstEngine::InitialiseGStreamer);
return true;
}
void GstEngine::InitialiseGStreamer() {
gst_init(nullptr, nullptr);
gst_pb_utils_init();
}
void GstEngine::SetEnvironment() {
QString scanner_path;
QString plugin_path;
QString registry_filename;
// On windows and mac we bundle the gstreamer plugins with strawberry
#if defined(Q_OS_DARWIN)
scanner_path = QCoreApplication::applicationDirPath() + "/../PlugIns/gst-plugin-scanner";
plugin_path = QCoreApplication::applicationDirPath() + "/../PlugIns/gstreamer";
#elif defined(Q_OS_WIN32)
plugin_path = QCoreApplication::applicationDirPath() + "/gstreamer-plugins";
#endif
#if defined(Q_OS_WIN32) || defined(Q_OS_DARWIN)
registry_filename = QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation) + QString("/gst-registry-%1-bin").arg(QCoreApplication::applicationVersion());
#endif
if (!scanner_path.isEmpty()) Utilities::SetEnv("GST_PLUGIN_SCANNER", scanner_path);
if (!plugin_path.isEmpty()) {
Utilities::SetEnv("GST_PLUGIN_PATH", plugin_path);
// Never load plugins from anywhere else.
Utilities::SetEnv("GST_PLUGIN_SYSTEM_PATH", plugin_path);
}
if (!registry_filename.isEmpty()) {
Utilities::SetEnv("GST_REGISTRY", registry_filename);
}
#ifdef Q_OS_DARWIN
Utilities::SetEnv("GIO_EXTRA_MODULES", QCoreApplication::applicationDirPath() + "/../PlugIns/gio-modules");
#endif
Utilities::SetEnv("PULSE_PROP_media.role", "music");
}
void GstEngine::ReloadSettings() {
Engine::Base::ReloadSettings();
QSettings s;
s.beginGroup(BackendSettingsPage::kSettingsGroup);
sink_ = s.value("output", kAutoSink).toString();
device_ = s.value("device");
if (sink_.isEmpty()) sink_ = kAutoSink;
rg_enabled_ = s.value("rgenabled", false).toBool();
rg_mode_ = s.value("rgmode", 0).toInt();
rg_preamp_ = s.value("rgpreamp", 0.0).toDouble();
rg_compression_ = s.value("rgcompression", true).toBool();
buffer_duration_nanosec_ = s.value("bufferduration", 4000).toLongLong() * kNsecPerMsec;
buffer_min_fill_ = s.value("bufferminfill", 33).toInt();
mono_playback_ = s.value("monoplayback", false).toBool();
}
qint64 GstEngine::position_nanosec() const {
if (!current_pipeline_) return 0;
const qint64 result = current_pipeline_->position() - beginning_nanosec_;
return qint64(qMax(0ll, result));
}
qint64 GstEngine::length_nanosec() const {
if (!current_pipeline_) return 0;
const qint64 result = end_nanosec_ - beginning_nanosec_;
if (result > 0) {
return result;
}
else {
// Get the length from the pipeline if we don't know.
return current_pipeline_->length();
}
}
Engine::State GstEngine::state() const {
if (!current_pipeline_) return url_.isEmpty() ? Engine::Empty : Engine::Idle;
switch (current_pipeline_->state()) {
case GST_STATE_NULL:
return Engine::Empty;
case GST_STATE_READY:
return Engine::Idle;
case GST_STATE_PLAYING:
return Engine::Playing;
case GST_STATE_PAUSED:
return Engine::Paused;
default:
return Engine::Empty;
}
}
void GstEngine::ConsumeBuffer(GstBuffer *buffer, int pipeline_id) {
// Schedule this to run in the GUI thread. The buffer gets added to the queue and unreffed by UpdateScope.
if (!QMetaObject::invokeMethod(this, "AddBufferToScope", Q_ARG(GstBuffer*, buffer), Q_ARG(int, pipeline_id))) {
qLog(Warning) << "Failed to invoke AddBufferToScope on GstEngine";
}
}
void GstEngine::AddBufferToScope(GstBuffer *buf, int pipeline_id) {
if (!current_pipeline_ || current_pipeline_->id() != pipeline_id) {
gst_buffer_unref(buf);
return;
}
if (latest_buffer_ != nullptr) {
gst_buffer_unref(latest_buffer_);
}
latest_buffer_ = buf;
have_new_buffer_ = true;
}
const Engine::Scope &GstEngine::scope(int chunk_length) {
// the new buffer could have a different size
if (have_new_buffer_) {
if (latest_buffer_ != nullptr) {
scope_chunks_ = ceil(((double)GST_BUFFER_DURATION(latest_buffer_) / (double)(chunk_length * kNsecPerMsec)));
}
// if the buffer is shorter than the chunk length
if (scope_chunks_ <= 0) {
scope_chunks_ = 1;
}
scope_chunk_ = 0;
have_new_buffer_ = false;
}
if (latest_buffer_ != nullptr) {
UpdateScope(chunk_length);
}
return scope_;
}
void GstEngine::UpdateScope(int chunk_length) {
typedef Engine::Scope::value_type sample_type;
// prevent dbz or invalid chunk size
if (!GST_CLOCK_TIME_IS_VALID(GST_BUFFER_DURATION(latest_buffer_))) return;
if (GST_BUFFER_DURATION(latest_buffer_) == 0) return;
GstMapInfo map;
gst_buffer_map(latest_buffer_, &map, GST_MAP_READ);
// determine where to split the buffer
int chunk_density = (map.size * kNsecPerMsec) / GST_BUFFER_DURATION(latest_buffer_);
int chunk_size = chunk_length * chunk_density;
// in case a buffer doesn't arrive in time
if (scope_chunk_ >= scope_chunks_) {
scope_chunk_ = 0;
return;
}
const sample_type *source = reinterpret_cast<sample_type*>(map.data);
sample_type *dest = scope_.data();
source += (chunk_size / sizeof(sample_type)) * scope_chunk_;
int bytes = 0;
// make sure we don't go beyond the end of the buffer
if (scope_chunk_ == scope_chunks_ - 1) {
bytes = qMin(static_cast<Engine::Scope::size_type>(map.size - (chunk_size * scope_chunk_)), scope_.size() * sizeof(sample_type));
}
else {
bytes = qMin(static_cast<Engine::Scope::size_type>(chunk_size), scope_.size() * sizeof(sample_type));
}
scope_chunk_++;
memcpy(dest, source, bytes);
gst_buffer_unmap(latest_buffer_, &map);
if (scope_chunk_ == scope_chunks_) {
gst_buffer_unref(latest_buffer_);
latest_buffer_ = nullptr;
}
}
void GstEngine::StartPreloading(const QUrl &url, bool force_stop_at_end, qint64 beginning_nanosec, qint64 end_nanosec) {
EnsureInitialised();
QByteArray gst_url = FixupUrl(url);
// No crossfading, so we can just queue the new URL in the existing pipeline and get gapless playback (hopefully)
if (current_pipeline_)
current_pipeline_->SetNextUrl(gst_url, beginning_nanosec, force_stop_at_end ? end_nanosec : 0);
}
QByteArray GstEngine::FixupUrl(const QUrl &url) {
EnsureInitialised();
QByteArray uri;
// It's a file:// url with a hostname set. QUrl::fromLocalFile does this when given a \\host\share\file path on Windows. Munge it back into a path that gstreamer will recognise.
if (url.scheme() == "file" && !url.host().isEmpty()) {
QString str = "//" + url.host() + url.path();
uri = str.toLocal8Bit();
}
else if (url.scheme() == "cdda") {
QString str;
if (url.path().isEmpty()) {
str = url.toString();
str.remove(str.lastIndexOf(QChar('a')), 1);
}
else {
// Currently, Gstreamer can't handle input CD devices inside cdda URL.
// So we handle them ourselve: we extract the track number and re-create an URL with only cdda:// + the track number (which can be handled by Gstreamer).
// We keep the device in mind, and we will set it later using SourceSetupCallback
QStringList path = url.path().split('/');
str = QString("cdda://%1a").arg(path.takeLast());
QString device = path.join("/");
current_pipeline_->SetSourceDevice(device);
}
uri = str.toLocal8Bit();
}
else {
uri = url.toEncoded();
}
return uri;
}
bool GstEngine::Load(const QUrl &url, Engine::TrackChangeFlags change, bool force_stop_at_end, quint64 beginning_nanosec, qint64 end_nanosec) {
EnsureInitialised();
Engine::Base::Load(url, change, force_stop_at_end, beginning_nanosec, end_nanosec);
QByteArray gst_url = FixupUrl(url);
bool crossfade = current_pipeline_ && ((crossfade_enabled_ && change & Engine::Manual) || (autocrossfade_enabled_ && change & Engine::Auto) || ((crossfade_enabled_ || autocrossfade_enabled_) && change & Engine::Intro));
if (change & Engine::Auto && change & Engine::SameAlbum && !crossfade_same_album_)
crossfade = false;
if (!crossfade && current_pipeline_ && current_pipeline_->url() == gst_url && change & Engine::Auto) {
// We're not crossfading, and the pipeline is already playing the URI we want, so just do nothing.
return true;
}
//SetEqualizerEnabled(equalizer_enabled_);
//SetEqualizerParameters(equalizer_preamp_, equalizer_gains_);
//SetStereoBalance(stereo_balance_);
shared_ptr<GstEnginePipeline> pipeline = CreatePipeline(gst_url, force_stop_at_end ? end_nanosec : 0);
if (!pipeline) return false;
if (crossfade) StartFadeout();
BufferingFinished();
current_pipeline_ = pipeline;
SetVolume(volume_);
SetEqualizerEnabled(equalizer_enabled_);
if (equalizer_preamp_) SetEqualizerParameters(equalizer_preamp_, equalizer_gains_);
SetStereoBalance(stereo_balance_);
// Maybe fade in this track
if (crossfade)
current_pipeline_->StartFader(fadeout_duration_nanosec_, QTimeLine::Forward);
return true;
}
void GstEngine::StartFadeout() {
if (is_fading_out_to_pause_) return;
fadeout_pipeline_ = current_pipeline_;
disconnect(fadeout_pipeline_.get(), 0, 0, 0);
fadeout_pipeline_->RemoveAllBufferConsumers();
fadeout_pipeline_->StartFader(fadeout_duration_nanosec_, QTimeLine::Backward);
connect(fadeout_pipeline_.get(), SIGNAL(FaderFinished()), SLOT(FadeoutFinished()));
}
void GstEngine::StartFadeoutPause() {
fadeout_pause_pipeline_ = current_pipeline_;
disconnect(fadeout_pause_pipeline_.get(), SIGNAL(FaderFinished()), 0, 0);
fadeout_pause_pipeline_->StartFader(fadeout_pause_duration_nanosec_, QTimeLine::Backward, QTimeLine::EaseInOutCurve, false);
if (fadeout_pipeline_ && fadeout_pipeline_->state() == GST_STATE_PLAYING) {
fadeout_pipeline_->StartFader(fadeout_pause_duration_nanosec_, QTimeLine::Backward, QTimeLine::LinearCurve, false);
}
connect(fadeout_pause_pipeline_.get(), SIGNAL(FaderFinished()), SLOT(FadeoutPauseFinished()));
is_fading_out_to_pause_ = true;
}
bool GstEngine::Play(quint64 offset_nanosec) {
EnsureInitialised();
if (!current_pipeline_ || current_pipeline_->is_buffering()) return false;
QFuture<GstStateChangeReturn> future = current_pipeline_->SetState(GST_STATE_PLAYING);
NewClosure(future, this, SLOT(PlayDone(QFuture<GstStateChangeReturn>, quint64, int)), future, offset_nanosec, current_pipeline_->id());
if (is_fading_out_to_pause_) {
current_pipeline_->SetState(GST_STATE_PAUSED);
}
return true;
}
void GstEngine::PlayDone(QFuture<GstStateChangeReturn> future, const quint64 offset_nanosec, const int pipeline_id) {
GstStateChangeReturn ret = future.result();
if (!current_pipeline_ || pipeline_id != current_pipeline_->id()) {
return;
}
if (ret == GST_STATE_CHANGE_FAILURE) {
// Failure, but we got a redirection URL - try loading that instead
QByteArray redirect_url = current_pipeline_->redirect_url();
if (!redirect_url.isEmpty() && redirect_url != current_pipeline_->url()) {
qLog(Info) << "Redirecting to" << redirect_url;
current_pipeline_ = CreatePipeline(redirect_url, end_nanosec_);
Play(offset_nanosec);
return;
}
// Failure - give up
qLog(Warning) << "Could not set thread to PLAYING.";
current_pipeline_.reset();
BufferingFinished();
return;
}
StartTimers();
// initial offset
if (offset_nanosec != 0 || beginning_nanosec_ != 0) {
Seek(offset_nanosec);
}
emit StateChanged(Engine::Playing);
// we've successfully started playing a media stream with this url
emit ValidSongRequested(url_);
}
void GstEngine::Stop(bool stop_after) {
StopTimers();
url_ = QUrl(); // To ensure we return Empty from state()
beginning_nanosec_ = end_nanosec_ = 0;
// Check if we started a fade out. If it isn't finished yet and the user pressed stop, we cancel the fader and just stop the playback.
if (is_fading_out_to_pause_) {
disconnect(current_pipeline_.get(), SIGNAL(FaderFinished()), 0, 0);
is_fading_out_to_pause_ = false;
has_faded_out_ = true;
fadeout_pause_pipeline_.reset();
fadeout_pipeline_.reset();
}
if (fadeout_enabled_ && current_pipeline_ && !stop_after) StartFadeout();
current_pipeline_.reset();
BufferingFinished();
emit StateChanged(Engine::Empty);
}
void GstEngine::FadeoutFinished() {
fadeout_pipeline_.reset();
emit FadeoutFinishedSignal();
}
void GstEngine::FadeoutPauseFinished() {
fadeout_pause_pipeline_->SetState(GST_STATE_PAUSED);
current_pipeline_->SetState(GST_STATE_PAUSED);
emit StateChanged(Engine::Paused);
StopTimers();
is_fading_out_to_pause_ = false;
has_faded_out_ = true;
fadeout_pause_pipeline_.reset();
fadeout_pipeline_.reset();
emit FadeoutFinishedSignal();
}
void GstEngine::Pause() {
if (!current_pipeline_ || current_pipeline_->is_buffering()) return;
// Check if we started a fade out. If it isn't finished yet and the user pressed play, we inverse the fader and resume the playback.
if (is_fading_out_to_pause_) {
disconnect(current_pipeline_.get(), SIGNAL(FaderFinished()), 0, 0);
current_pipeline_->StartFader(fadeout_pause_duration_nanosec_, QTimeLine::Forward, QTimeLine::EaseInOutCurve, false);
is_fading_out_to_pause_ = false;
has_faded_out_ = false;
emit StateChanged(Engine::Playing);
return;
}
if (current_pipeline_->state() == GST_STATE_PLAYING) {
if (fadeout_pause_enabled_) {
StartFadeoutPause();
}
else {
current_pipeline_->SetState(GST_STATE_PAUSED);
emit StateChanged(Engine::Paused);
StopTimers();
}
}
}
void GstEngine::Unpause() {
if (!current_pipeline_ || current_pipeline_->is_buffering()) return;
if (current_pipeline_->state() == GST_STATE_PAUSED) {
current_pipeline_->SetState(GST_STATE_PLAYING);
// Check if we faded out last time. If yes, fade in no matter what the settings say.
// If we pause with fadeout, deactivate fadeout and resume playback, the player would be muted if not faded in.
if (has_faded_out_) {
disconnect(current_pipeline_.get(), SIGNAL(FaderFinished()), 0, 0);
current_pipeline_->StartFader(fadeout_pause_duration_nanosec_, QTimeLine::Forward, QTimeLine::EaseInOutCurve, false);
has_faded_out_ = false;
}
emit StateChanged(Engine::Playing);
StartTimers();
}
}
void GstEngine::Seek(quint64 offset_nanosec) {
if (!current_pipeline_) return;
seek_pos_ = beginning_nanosec_ + offset_nanosec;
waiting_to_seek_ = true;
if (!seek_timer_->isActive()) {
SeekNow();
seek_timer_->start(); // Stop us from seeking again for a little while
}
}
void GstEngine::SeekNow() {
if (!waiting_to_seek_) return;
waiting_to_seek_ = false;
if (!current_pipeline_) return;
if (!current_pipeline_->Seek(seek_pos_)) {
qLog(Warning) << "Seek failed";
}
}
void GstEngine::SetEqualizerEnabled(bool enabled) {
equalizer_enabled_ = enabled;
if (current_pipeline_) current_pipeline_->SetEqualizerEnabled(enabled);
}
void GstEngine::SetEqualizerParameters(int preamp, const QList<int> &band_gains) {
equalizer_preamp_ = preamp;
equalizer_gains_ = band_gains;
if (current_pipeline_)
current_pipeline_->SetEqualizerParams(preamp, band_gains);
}
void GstEngine::SetStereoBalance(float value) {
stereo_balance_ = value;
if (current_pipeline_) current_pipeline_->SetStereoBalance(value);
}
void GstEngine::SetVolumeSW(uint percent) {
if (current_pipeline_) current_pipeline_->SetVolume(percent);
}
void GstEngine::StartTimers() {
StopTimers();
timer_id_ = startTimer(kTimerIntervalNanosec / kNsecPerMsec);
}
void GstEngine::StopTimers() {
if (timer_id_ != -1) {
killTimer(timer_id_);
timer_id_ = -1;
}
}
void GstEngine::timerEvent(QTimerEvent *e) {
if (e->timerId() != timer_id_) return;
if (current_pipeline_) {
const qint64 current_position = position_nanosec();
const qint64 current_length = length_nanosec();
const qint64 remaining = current_length - current_position;
const qint64 fudge = kTimerIntervalNanosec + 100 * kNsecPerMsec; // Mmm fudge
const qint64 gap = buffer_duration_nanosec_ + (autocrossfade_enabled_ ? fadeout_duration_nanosec_ : kPreloadGapNanosec);
// only if we know the length of the current stream...
if (current_length > 0) {
// emit TrackAboutToEnd when we're a few seconds away from finishing
if (remaining < gap + fudge) {
EmitAboutToEnd();
}
}
}
}
void GstEngine::HandlePipelineError(int pipeline_id, const QString &message, int domain, int error_code) {
if (!current_pipeline_.get() || current_pipeline_->id() != pipeline_id)
return;
qLog(Warning) << "Gstreamer error:" << domain << error_code << message;
current_pipeline_.reset();
BufferingFinished();
emit StateChanged(Engine::Error);
// unable to play media stream with this url
emit InvalidSongRequested(url_);
#if 0
// TODO: the types of errors listed below won't be shown to user
// they will get logged and the current song will be skipped; instead of maintaining the list we should probably:
// - don't report any engine's errors to user (always just log and skip)
// - come up with a less intrusive error box (not a dialog but a notification popup of some kind) and then report all errors
if (!(domain == GST_RESOURCE_ERROR &&
error_code == GST_RESOURCE_ERROR_NOT_FOUND) &&
!(domain == GST_STREAM_ERROR &&
error_code == GST_STREAM_ERROR_TYPE_NOT_FOUND) &&
!(domain == GST_RESOURCE_ERROR &&
error_code == GST_RESOURCE_ERROR_OPEN_READ)) {
#endif
emit Error(message);
//}
}
void GstEngine::EndOfStreamReached(int pipeline_id, bool has_next_track) {
if (!current_pipeline_.get() || current_pipeline_->id() != pipeline_id)
return;
if (!has_next_track) {
current_pipeline_.reset();
BufferingFinished();
}
emit TrackEnded();
}
void GstEngine::NewMetaData(int pipeline_id, const Engine::SimpleMetaBundle &bundle) {
if (!current_pipeline_.get() || current_pipeline_->id() != pipeline_id)
return;
emit MetaData(bundle);
}
GstElement *GstEngine::CreateElement(const QString &factoryName, GstElement *bin, bool fatal, bool showerror) {
// Make a unique name
QString name = factoryName + "-" + QString::number(next_element_id_++);
GstElement *element = gst_element_factory_make(factoryName.toUtf8().constData(), name.toUtf8().constData());
if (!element) {
if (showerror)
emit Error(QString("GStreamer could not create the element: %1. Please make sure that you have installed all necessary GStreamer plugins").arg(factoryName));
if (fatal) gst_object_unref(GST_OBJECT(bin));
return nullptr;
}
if (bin) gst_bin_add(GST_BIN(bin), element);
return element;
}
GstEngine::PluginDetailsList GstEngine::GetPluginList(const QString &classname) const {
PluginDetailsList ret;
GstRegistry *registry = gst_registry_get();
GList *const features = gst_registry_get_feature_list(registry, GST_TYPE_ELEMENT_FACTORY);
GList *p = features;
while (p) {
GstElementFactory *factory = GST_ELEMENT_FACTORY(p->data);
if (QString(gst_element_factory_get_klass(factory)).contains(classname)) {;
PluginDetails details;
details.name = QString::fromUtf8(gst_plugin_feature_get_name(p->data));
details.description = QString::fromUtf8(gst_element_factory_get_metadata(factory, GST_ELEMENT_METADATA_DESCRIPTION));
ret << details;
//qLog(Debug) << details.name << details.description;
}
p = g_list_next(p);
}
gst_plugin_feature_list_free(features);
return ret;
}
shared_ptr<GstEnginePipeline> GstEngine::CreatePipeline() {
EnsureInitialised();
shared_ptr<GstEnginePipeline> ret(new GstEnginePipeline(this));
ret->set_output_device(sink_, device_);
ret->set_replaygain(rg_enabled_, rg_mode_, rg_preamp_, rg_compression_);
ret->set_buffer_duration_nanosec(buffer_duration_nanosec_);
ret->set_buffer_min_fill(buffer_min_fill_);
ret->set_mono_playback(mono_playback_);
ret->AddBufferConsumer(this);
for (BufferConsumer *consumer : buffer_consumers_) {
ret->AddBufferConsumer(consumer);
}
connect(ret.get(), SIGNAL(EndOfStreamReached(int, bool)), SLOT(EndOfStreamReached(int, bool)));
connect(ret.get(), SIGNAL(Error(int, QString, int, int)), SLOT(HandlePipelineError(int, QString, int, int)));
connect(ret.get(), SIGNAL(MetadataFound(int, Engine::SimpleMetaBundle)), SLOT(NewMetaData(int, Engine::SimpleMetaBundle)));
connect(ret.get(), SIGNAL(BufferingStarted()), SLOT(BufferingStarted()));
connect(ret.get(), SIGNAL(BufferingProgress(int)), SLOT(BufferingProgress(int)));
connect(ret.get(), SIGNAL(BufferingFinished()), SLOT(BufferingFinished()));
return ret;
}
shared_ptr<GstEnginePipeline> GstEngine::CreatePipeline(const QUrl &url, qint64 end_nanosec) {
shared_ptr<GstEnginePipeline> ret = CreatePipeline();
if (!ret->InitFromUrl(url.toEncoded(), end_nanosec)) ret.reset();
return ret;
}
shared_ptr<GstEnginePipeline> GstEngine::CreatePipeline(const QByteArray &url, qint64 end_nanosec) {
shared_ptr<GstEnginePipeline> ret = CreatePipeline();
if (!ret->InitFromUrl(url, end_nanosec)) ret.reset();
return ret;
}
bool GstEngine::ALSADeviceSupport(const QString &name) {
return (name == kALSASink || name == kOSSSink || name == kPulseSink);
}
void GstEngine::AddBufferConsumer(BufferConsumer *consumer) {
buffer_consumers_ << consumer;
if (current_pipeline_) current_pipeline_->AddBufferConsumer(consumer);
}
void GstEngine::RemoveBufferConsumer(BufferConsumer *consumer) {
buffer_consumers_.removeAll(consumer);
if (current_pipeline_) current_pipeline_->RemoveBufferConsumer(consumer);
}
void GstEngine::BufferingStarted() {
if (buffering_task_id_ != -1) {
task_manager_->SetTaskFinished(buffering_task_id_);
}
buffering_task_id_ = task_manager_->StartTask(tr("Buffering"));
task_manager_->SetTaskProgress(buffering_task_id_, 0, 100);
}
void GstEngine::BufferingProgress(int percent) {
task_manager_->SetTaskProgress(buffering_task_id_, percent, 100);
}
void GstEngine::BufferingFinished() {
if (buffering_task_id_ != -1) {
task_manager_->SetTaskFinished(buffering_task_id_);
buffering_task_id_ = -1;
}
}
EngineBase::OutputDetailsList GstEngine::GetOutputsList() const {
EngineBase::OutputDetailsList ret;
PluginDetailsList plugins = GetPluginList("Sink/Audio");
for (const PluginDetails &plugin : plugins) {
OutputDetails output;
output.name = plugin.name;
output.description = plugin.description;
if (plugin.name == kAutoSink) output.iconname = "soundcard";
else if ((plugin.name == kALSASink) || (plugin.name == kOSS4Sink) || (plugin.name == kOSS4Sink)) output.iconname = "alsa";
else if (plugin.name== kJackAudioSink) output.iconname = "jack";
else if (plugin.name == kPulseSink) output.iconname = "pulseaudio";
else if ((plugin.name == kA2DPSink) || (plugin.name == kAVDTPSink)) output.iconname = "bluetooth";
else output.iconname = "soundcard";
ret.append(output);
}
return ret;
}
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