feat: add dvd+rw-format support for DVD RW erase

debian/control.in

@@ -76,7 +76,8 @@ Section: libdevel
 Multi-Arch: same
 Depends:
  ${shlibs:Depends},
- ${misc:Depends}
+ ${misc:Depends},
+ dvd+rw-tools
 Recommends:
  libudfburn
 Description: A library about burning CD.

src/dfm-burn/dfm-burn-lib/dopticaldiscmanager.cpp

@@ -8,9 +8,10 @@
 #include "private/dopticaldiscmanager_p.h"
 #include "private/dxorrisoengine.h"
 #include "private/dudfburnengine.h"
+#include "private/dvdrwformatengine.h"
 #include "private/dsm3hash.h"
 
 #include <QDebug>
 #include <QDir>
 #include <QDirIterator>
 #include <QFileInfo>
@@ -144,6 +145,36 @@
 bool DOpticalDiscManager::erase()
 {
     bool ret { false };
+
+    // 查询介质类型
+    MediaType mediaType { MediaType::kNoMedia };
+    {
+        QScopedPointer<DOpticalDiscInfo> info { DOpticalDiscManager::createOpticalInfo(dptr->curDev) };
+        if (info)
+            mediaType = info->mediaType();
+    }
+
+    // DVD±RW 且 dvd+rw-format 可用时走新引擎
+    bool isDvdRw = (mediaType == MediaType::kDVD_PLUS_RW || mediaType == MediaType::kDVD_RW);
+    QString dvdRwFormat = QStandardPaths::findExecutable("dvd+rw-format");
+
+    if (isDvdRw && !dvdRwFormat.isEmpty()) {
+        QScopedPointer<DVDRwFormatEngine> engine { new DVDRwFormatEngine };
+        connect(
+                engine.data(), &DVDRwFormatEngine::jobStatusChanged, this,
+                [this](JobStatus status, int progress) {
+                    Q_EMIT jobStatusChanged(status, progress, {}, {});
+                },
+                Qt::DirectConnection);
+
+        ret = engine->doErase(dptr->curDev, mediaType);
+        return ret;
+    }
+
+    // 降级：走 xorriso 原路径
+    if (isDvdRw)
+        qWarning() << "[dfm-burn] dvd+rw-format not found, falling back to xorriso for DVD±RW erase";
+
     QScopedPointer<DXorrisoEngine> engine { new DXorrisoEngine };
     connect(
             engine.data(), &DXorrisoEngine::jobStatusChanged, this,

src/dfm-burn/dfm-burn-lib/private/dvdrwformatengine.cpp

@@ -0,0 +1,165 @@
+// SPDX-FileCopyrightText: 2026 UnionTech Software Technology Co., Ltd.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "dvdrwformatengine.h"
+
+#include <QDebug>
+#include <QProcess>
+#include <QRegularExpression>
+#include <QStandardPaths>
+#include <QDir>
+
+DFM_BURN_USE_NS
+
+DVDRwFormatEngine::DVDRwFormatEngine(QObject *parent)
+    : QObject(parent)
+{
+}
+
+DVDRwFormatEngine::~DVDRwFormatEngine()
+{
+}
+
+bool DVDRwFormatEngine::doErase(const QString &dev, MediaType type)
+{
+    phase = 0;
+    lastRawProgress = 0;
+
+    // 1. 校验设备路径
+    QString cleanDev = QDir::cleanPath(dev);
+    if (!cleanDev.startsWith("/dev/sr")) {
+        qWarning() << "[dfm-burn] Invalid device path:" << dev;
+        Q_EMIT jobStatusChanged(JobStatus::kFailed, -1);
+        return false;
+    }
+
+    // 2. 查找 dvd+rw-format 二进制
+    QString binary = QStandardPaths::findExecutable("dvd+rw-format");
+    if (binary.isEmpty()) {
+        qWarning() << "[dfm-burn] dvd+rw-format not found";
+        Q_EMIT jobStatusChanged(JobStatus::kFailed, -1);
+        return false;
+    }
+
+    // 3. 根据介质类型选择命令参数
+    QStringList args;
+    if (type == MediaType::kDVD_PLUS_RW) {
+        args << "-force"
+             << "-gui"
+             << cleanDev;
+    } else if (type == MediaType::kDVD_RW) {
+        args << "-blank=full"
+             << "-gui"
+             << cleanDev;
+    } else {
+        qWarning() << "[dfm-burn] Unsupported media type for dvd+rw-format:" << static_cast<int>(type);
+        Q_EMIT jobStatusChanged(JobStatus::kFailed, -1);
+        return false;
+    }
+
+    Q_EMIT jobStatusChanged(JobStatus::kRunning, 0);
+
+    // dvd+rw-format 进度输出机制分析（源码 dvd+rw-format.cpp）：
+    //
+    // 1. fork() 后子进程 setsid() 执行 SCSI 操作，父进程安装 SIGALRM
+    //    定时轮询共享内存中的 progress 值（0~65536），用退格符覆盖式
+    //    输出百分比到 stderr。
+    //
+    // 2. -gui 标志的 gui_action 赋值在 fork 之后的子进程中（727 行），
+    //    父进程的 gui_action 始终为 NULL（129 行），所以 -gui 对父进程
+    //    的进度输出格式无影响——父进程始终用 \b 退格覆盖方式。
+    //
+    // 3. DVD+RW -force 路径有 3 个 wait_for_unit(progress) 调用
+    //    （FORMAT UNIT → STOP DE-ICING → CLOSE SESSION），
+    //    每个 SCSI 操作的进度指示器独立从 0 开始，
+    //    导致原始输出出现 3 个 0→100% 周期。
+    //    DVD-RW -blank 路径只有 1 个 wait_for_unit，单周期。
+    //
+    // 4. 进度数据通过 stderr 管道传输。QProcess::readyReadStandardOutput
+    //    信号在 QEventLoop + MergedChannels 下可能不能及时触发（尤其在
+    //    DVD-RW 单阶段输出稀疏时）。改用 waitForReadyRead 主动轮询
+    //    管道——其内部调用 processEvents 处理 Qt 信号，进度可实时传递。
+
+    int totalPhases = (type == MediaType::kDVD_PLUS_RW) ? 3 : 1;
+
+    QProcess proc;
+    proc.setProcessChannelMode(QProcess::MergedChannels);
+
+    QByteArray buffer;
+
+    proc.start(binary, args);
+    if (!proc.waitForStarted()) {
+        qWarning() << "[dfm-burn] Failed to start dvd+rw-format";
+        Q_EMIT jobStatusChanged(JobStatus::kFailed, -1);
+        return false;
+    }
+
+    // 主动轮询管道，不依赖 readyReadStandardOutput 信号。
+    // waitForReadyRead 内部调用 processEvents，emit 的信号能被上层接收。
+    const int pollInterval { 200 };   // ms
+
+    while (proc.state() == QProcess::Running) {
+        proc.waitForReadyRead(pollInterval);
+
+        if (proc.bytesAvailable() > 0) {
+            buffer += proc.readAllStandardOutput();
+            parseProgress(buffer, totalPhases);
+            if (buffer.size() > 1024)
+                buffer = buffer.right(512);
+        }
+    }
+
+    // 读取进程退出后管道中的剩余数据
+    if (proc.bytesAvailable() > 0) {
+        buffer += proc.readAllStandardOutput();
+        parseProgress(buffer, totalPhases);
+    }
+
+    // 检查退出结果
+    if (proc.exitStatus() == QProcess::CrashExit) {
+        qWarning() << "[dfm-burn] dvd+rw-format crashed";
+        Q_EMIT jobStatusChanged(JobStatus::kFailed, -1);
+        return false;
+    }
+
+    int exitCode = proc.exitCode();
+    if (exitCode == 0) {
+        Q_EMIT jobStatusChanged(JobStatus::kFinished, 100);
+        return true;
+    } else {
+        qWarning() << "[dfm-burn] dvd+rw-format exited with code" << exitCode;
+        Q_EMIT jobStatusChanged(JobStatus::kFailed, -1);
+        return false;
+    }
+}
+
+void DVDRwFormatEngine::parseProgress(const QByteArray &data, int totalPhases)
+{
+    // dvd+rw-format 父进程用退格符覆盖式输出进度，格式如：
+    //   0.0%\b\b\b\b0.1%\b|\b/\b\b0.2% ...
+    // 也有部分行带换行符（子进程的诊断输出、父进程结束时的 \n）。
+    // 在整个缓冲区中搜索最后一个 XX.X% 模式即可获取当前进度。
+    static const QRegularExpression re("([0-9]+(?:\\.[0-9]+)?)%");
+    auto matches = re.globalMatch(QString::fromLocal8Bit(data));
+    QString lastPct;
+    while (matches.hasNext())
+        lastPct = matches.next().captured(1);
+    if (lastPct.isEmpty())
+        return;
+
+    int rawProgress = static_cast<int>(lastPct.toDouble());
+
+    // 检测相位切换：进度显著回退说明进入了下一个 SCSI 操作
+    if (rawProgress < lastRawProgress - 5) {
+        phase++;
+        if (phase >= totalPhases)
+            phase = totalPhases - 1;
+    }
+    lastRawProgress = rawProgress;
+
+    // 加权计算总体进度：(phase * 100 + rawProgress) / totalPhases
+    int overall = (phase * 100 + rawProgress) / totalPhases;
+    if (overall < 100)
+        Q_EMIT jobStatusChanged(JobStatus::kRunning, overall);
+}

src/dfm-burn/dfm-burn-lib/private/dvdrwformatengine.h

@@ -0,0 +1,37 @@
+// SPDX-FileCopyrightText: 2026 UnionTech Software Technology Co., Ltd.
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef DVDRWFORMATENGINE_H
+#define DVDRWFORMATENGINE_H
+
+#include <dfm-burn/dburn_global.h>
+
+#include <QObject>
+
+DFM_BURN_BEGIN_NS
+
+class DVDRwFormatEngine : public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit DVDRwFormatEngine(QObject *parent = nullptr);
+    ~DVDRwFormatEngine() override;
+
+    bool doErase(const QString &dev, MediaType type);
+
+Q_SIGNALS:
+    void jobStatusChanged(JobStatus status, int progress);
+
+private:
+    void parseProgress(const QByteArray &data, int totalPhases);
+
+private:
+    int phase { 0 };
+    int lastRawProgress { 0 };
+};
+
+DFM_BURN_END_NS
+
+#endif   // DVDRWFORMATENGINE_H