feat: enable the configuration for 8K preview.

libcam/libcam_v4l2core/v4l2_formats.c

@@ -119,6 +119,9 @@
 	0
 };
 
+// 是否开启8K预览
+static int enable_8k_preview = 0;
+
 /* FIXME: doesn't support bigendian formats=> fourcc | (1 << 31)
  * get pixelformat from fourcc
  * args:
@@ -748,8 +751,45 @@
 
 int is_valid_resolution(int width, int height)
 {
+	// 希沃的8K分辨率是8192x2772，过多限制会导致此分辨率不可用
+	if (enable_8k_preview) {
+		return (width > 0 && height > 0)
+				&& (width % 16 == 0 && height % 4 == 0);
+	}
+
 	// 由于上游guvcview项目在解码3840x2160分辨率以上时会出现异常（出现条纹、崩溃等），所以我们需要限制可用分辨率到3840x2160
 	return (width > 0 && height > 0) 
 			&& (width <= MAX_WIDTH_LIMIT && height <= MAX_HEIGHT_LIMIT) 
 			&& (width % 16 == 0 && height % 8 == 0);
 }
+
+/*
+ * set enable 8k preview
+ * args:
+ *   enable - enable 8k preview
+ *
+ * asserts:
+ *   none
+ *
+ * returns: void
+ */
+void set_enable_8k_preview(int enable)
+{
+	enable_8k_preview = enable;
+}
+
+/*
+ * check if 8k preview is enabled
+ * args:
+ *   none
+ *
+ * asserts:
+ *   none
+ *
+ * returns: TRUE(1) if enabled
+ *          FALSE(0) if not
+ */
+int is_enable_8k_preview()
+{
+	return enable_8k_preview;
+}

libcam/libcam_v4l2core/v4l2_formats.h

@@ -110,4 +110,29 @@ void free_frame_formats(v4l2_dev_t *vd);
  */
 int is_valid_resolution(int width, int height);
 
+/*
+ * set enable 8k preview
+ * args:
+ *   enable - enable 8k preview
+ *
+ * asserts:
+ *   none
+ *
+ * returns: void
+ */
+void set_enable_8k_preview(int enable);
+
+/*
+ * check if 8k preview is enabled
+ * args:
+ *   none
+ *
+ * asserts:
+ *   none
+ *
+ * returns: TRUE(1) if enabled
+ *          FALSE(0) if not
+ */
+int is_enable_8k_preview();
+
 #endif

src/assets/org.deepin.camera.encode.json

@@ -81,6 +81,16 @@
             "description": "Enable USB group",
             "permissions": "readwrite",
             "visibility": "private"
+        },
+        "enable8kPreview": {
+            "value": false,
+            "serial": 0,
+            "flags": ["global"],
+            "name": "enable 8k preview",
+            "name[zh_CN]": "是否启用8K预览",
+            "description": "Enable 8k preview",
+            "permissions": "readwrite",
+            "visibility": "private"
         }
     }
 }

src/main.cpp

@@ -4,10 +4,11 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 extern "C" {
 #include "camview.h"
+#include "v4l2_formats.h"
 }
 #include "mainwindow.h"
 #include "capplication.h"
 #include "cameraconfig.h"
 #include "acobjectlist.h"
 #include "dbus_adpator.h"
@@ -188,6 +189,16 @@
         DataManager::instance()->setEnableUsbGroup(enable);
     }
 
+    // 是否开启8K预览通过DConfig控制，目前要求开启8K预览的厂家是希沃
+    // 希沃的8K分辨率是8192x2772，希沃在8K预览的时候表现正常，在录像的时候表现异常，所以在开启8K预览的时候我们会禁用录像功能
+    // 8K预览功能默认关闭，因为多个厂家的摄像头在8K预览的时候表现异常
+    if (dconfig && dconfig->isValid() && dconfig->keyList().contains("enable8kPreview")) {
+        bool enable = dconfig->value("enable8kPreview").toBool();
+        qInfo() << "enable 8K preview:" << enable;
+        DataManager::instance()->setEnable8kPreview(enable);
+        set_enable_8k_preview(enable ? 1 : 0);
+    }
+
     if (!libVaDriverName.isEmpty()) {
         qputenv("LIBVA_DRIVER_NAME", libVaDriverName.toLocal8Bit());
     }

src/src/basepub/datamanager.h

@@ -175,6 +175,18 @@ class DataManager: public QObject
      * @return
      */
     bool isEnableUsbGroup() const { return m_enableUsbGroup; };
+
+    /**
+     * @brief 设置是否启用8K预览
+     * @param enable
+     */
+    void setEnable8kPreview(bool enable) { m_enable8kPreview = enable; };
+
+    /**
+     * @brief 获取是否启用8K预览
+     * @return
+     */
+    bool isEnable8kPreview() const { return m_enable8kPreview; };
 private:
     DataManager();
     static DataManager *m_dataManager;
@@ -187,5 +199,6 @@ class DataManager: public QObject
     bool m_isSupportCameraSwitch = false; // 是否带有摄像头开关
     bool m_isPreviewNoDelay = false; // 是否预览无延迟
     bool m_enableUsbGroup = false; // 是否启用USB摄像头分组
+    bool m_enable8kPreview = false; // 是否启用8K预览
 };
 #endif // DATAMANAGER_H

src/src/mainwindow.cpp

@@ -1394,6 +1394,7 @@ void CMainWindow::onSwitchCameraSuccess(const QString &cameraName)
     m_labelCameraName->show();
     m_filterName->hide();
     m_showCameraNameTimer->start();
+    showChildWidget();
 }
 
 void CMainWindow::onTimeoutLock(const QString &serviceName, QVariantMap key2value, QStringList)
@@ -2216,6 +2217,13 @@ void CMainWindow::onSettingsDlgClose()
     if (bPathChanged) {
         reflushSnapshotLabel();
     }
+
+    // 8k分辨率时不显示录像功能
+    bool isResolutionTooHigh = checkResolutionTooHigh();
+    if (isResolutionTooHigh) {
+        m_modeSwitchBox->reset();
+    }
+    showChildWidget();
 }
 
 void CMainWindow::onEnableSettings(bool bTrue)
@@ -2327,9 +2335,12 @@ void CMainWindow::showChildWidget()
         showWidget(m_photoRecordBtn, true);
         return;
     }
+
+    // 8k分辨率时不显示录像功能
+    bool isResolutionTooHigh = checkResolutionTooHigh();
     showWidget(m_snapshotLabel, true);
     showWidget(m_cameraSwitchBtn, m_bSwitchCameraShowEnable);
-    showWidget(m_modeSwitchBox, true);
+    showWidget(m_modeSwitchBox, !isResolutionTooHigh);
     showWidget(m_photoRecordBtn, true);
     showWidget(m_takePhotoSettingArea, true);
     showWidget(m_filterName, m_bShowFilterName);
@@ -2348,6 +2359,21 @@ void CMainWindow::showWidget(DWidget *widget, bool bShow)
     }
 }
 
+bool CMainWindow::checkResolutionTooHigh() const
+{
+    int currentWidth  = 0;
+    int currentHeight = 0;
+    v4l2_dev_t *fd = get_v4l2_device_handler();
+    if (fd) {
+        currentWidth  = v4l2core_get_frame_width(fd);
+        currentHeight = v4l2core_get_frame_height(fd);
+    }
+    bool isTrue = currentWidth > MAX_WIDTH_LIMIT || currentHeight > MAX_HEIGHT_LIMIT;
+    qInfo() << __func__ << isTrue << currentWidth << "x" << currentHeight;
+
+    return isTrue;
+}
+
 CMainWindow::~CMainWindow()
 {
     if (m_devnumMonitor) {

src/src/mainwindow.h

@@ -201,6 +201,11 @@ class CMainWindow : public DMainWindow
     */
     void getMediaFileInfoList(const QString &path, QFileInfoList &fileList);
 
+    /**
+    * @brief 检测分辨率是否太高，8K分辨率不显示录像功能
+    */
+    bool checkResolutionTooHigh() const;
+
 private slots:
     /**
      * @brief setSelBtnHide 设置切换相机按钮隐藏

src/src/rollingbox.cpp

@@ -301,3 +301,10 @@ void RollingBox::setDeviation(int n)
     update();
 }
 
+void RollingBox::reset()
+{
+    m_currentIndex = m_rangeMin;
+    m_deviation = 0;
+    emit currentValueChanged(m_currentIndex);
+    update();
+}

src/src/rollingbox.h

@@ -36,6 +36,11 @@ class RollingBox : public QWidget
     */
     int getCurrentValue();
 
+    /**
+    * @brief 重置至初始位置
+    */
+    void reset();
+
 protected:
     /**
     * @brief 鼠标按下事件