feat: load the user's mpv.conf

src/mpv/mpvitem.cpp

@@ -1,7 +1,14 @@
 #include "mpvitem.h"
 
+#include "mpvuserconfig.h"
+
 #include <MpvController>
 
+#include <QDir>
+#include <QFile>
+#include <QSaveFile>
+#include <QStandardPaths>
+
 #include <cmath>
 #include <utility>
 
@@ -58,6 +65,8 @@ MpvItem::MpvItem(QQuickItem *parent)
     // time; a file loaded before that plays without video. Hold it until ready() fires.
     connect(this, &MpvAbstractItem::ready, this, [this] {
         m_ready = true;
+        // Before the first file, so its options apply from the start.
+        applyUserConfig();
         if (m_pendingUrl.isValid()) {
             loadFile(std::exchange(m_pendingUrl, {}));
         }
@@ -208,6 +217,65 @@ void MpvItem::showText(const QString &text)
     commandAsync(QStringList{QStringLiteral("show-text"), text});
 }
 
+bool MpvItem::loadUserConfig() const
+{
+    return m_loadUserConfig;
+}
+
+void MpvItem::setLoadUserConfig(bool load)
+{
+    if (load != m_loadUserConfig) {
+        m_loadUserConfig = load;
+        Q_EMIT loadUserConfigChanged();
+    }
+}
+
+QString MpvItem::userConfigDir() const
+{
+    return MpvUserConfig::configDir();
+}
+
+QStringList MpvItem::loadedUserConfigFiles() const
+{
+    return m_loadedUserConfigFiles;
+}
+
+QStringList MpvItem::skippedUserOptions() const
+{
+    return m_skippedUserOptions;
+}
+
+void MpvItem::applyUserConfig()
+{
+    if (m_loadUserConfig) {
+        const QString cacheDir = QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + QStringLiteral("/mpv");
+        QDir().mkpath(cacheDir);
+
+        const QStringList files = MpvUserConfig::configFiles();
+        for (qsizetype i = 0; i < files.size(); ++i) {
+            QFile source(files.at(i));
+            if (!source.open(QIODevice::ReadOnly)) {
+                continue;
+            }
+            const MpvUserConfig::Prepared prepared = MpvUserConfig::prepare(QString::fromUtf8(source.readAll()), MpvUserConfig::configDir());
+
+            // mpv only loads config from files, so the adapted copy goes to the cache.
+            QSaveFile copy(QStringLiteral("%1/mpv-%2.conf").arg(cacheDir).arg(i));
+            if (!copy.open(QIODevice::WriteOnly) || copy.write(prepared.content.toUtf8()) < 0 || !copy.commit()) {
+                continue;
+            }
+            commandAsync(QStringList{QStringLiteral("load-config-file"), copy.fileName()});
+            m_loadedUserConfigFiles.append(files.at(i));
+            for (const QString &option : prepared.skippedOptions) {
+                if (!m_skippedUserOptions.contains(option)) {
+                    m_skippedUserOptions.append(option);
+                }
+            }
+        }
+    }
+    Q_EMIT userConfigApplied();
+}
+
 void MpvItem::onPropertyChanged(const QString &property, const QVariant &value)
 {
     if (property == u"media-title") {