Add options for screenshot format and quality

builtin/settingtypes.txt

@@ -554,6 +554,14 @@ fallback_font_shadow_alpha (Fallback font shadow alpha) int 128 0 255
 #    Path to save screenshots at.
 screenshot_path (Screenshot folder) path
 
+#    Format of screenshots.
+screenshot_format (Screenshot format) enum png png,jpg,bmp,pcx,ppm,tga
+
+#    Screenshot quality. Only used for JPEG format.
+#    1 means worst quality; 100 means best quality.
+#    Use 0 for default quality.
+screenshot_quality (Screenshot quality) int 0 0 100
+
 [**Advanced]
 
 #    Adjust dpi configuration to your screen (non X11/Android only) e.g. for 4k screens.

minetest.conf.example

@@ -653,6 +653,16 @@
 #    type: path
 # screenshot_path =
 
+#    Format of screenshots.
+#    type: enum values: png, jpg, bmp, pcx, ppm, tga
+# screenshot_format = png
+
+#    Screenshot quality. Only used for JPEG format.
+#    1 means worst quality; 100 means best quality.
+#    Use 0 for default quality.
+#    type: int min: 0 max: 100
+# screenshot_quality = 0
+
 ### Advanced
 
 #    Adjust dpi configuration to your screen (non X11/Android only) e.g. for 4k screens.

src/client.cpp

@@ -1813,9 +1813,12 @@ void Client::makeScreenshot(IrrlichtDevice *device)
 			+ DIR_DELIM
 			+ std::string("screenshot_")
 			+ std::string(timetstamp_c);
-	std::string filename_ext = ".png";
+	std::string filename_ext = "." + g_settings->get("screenshot_format");
 	std::string filename;
 
+	u32 quality = (u32)g_settings->getS32("screenshot_quality");
+	quality = MYMIN(MYMAX(quality, 0), 100) / 100.0 * 255;
+
 	// Try to find a unique filename
 	unsigned serial = 0;
 
@@ -1837,7 +1840,7 @@ void Client::makeScreenshot(IrrlichtDevice *device)
 			raw_image->copyTo(image);
 
 			std::ostringstream sstr;
-			if (driver->writeImageToFile(image, filename.c_str())) {
+			if (driver->writeImageToFile(image, filename.c_str(), quality)) {
 				sstr << "Saved screenshot to '" << filename << "'";
 			} else {
 				sstr << "Failed to save screenshot '" << filename << "'";

src/defaultsettings.cpp

@@ -123,6 +123,8 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("invert_mouse", "false");
 	settings->setDefault("enable_clouds", "true");
 	settings->setDefault("screenshot_path", ".");
+	settings->setDefault("screenshot_format", "png");
+	settings->setDefault("screenshot_quality", "0");
 	settings->setDefault("view_bobbing_amount", "1.0");
 	settings->setDefault("fall_bobbing_amount", "0.0");
 	settings->setDefault("enable_3d_clouds", "true");

src/settings_translation_file.cpp

@@ -272,6 +272,10 @@ fake_function() {
 	gettext("Fallback font shadow alpha");
 	gettext("Screenshot folder");
 	gettext("Path to save screenshots at.");
+	gettext("Screenshot format");
+	gettext("Format of screenshots.");
+	gettext("Screenshot quality");
+	gettext("Screenshot quality. Only used for JPEG format.\n1 means worst quality; 100 means best quality.\nUse 0 for default quality.");
 	gettext("Advanced");
 	gettext("DPI");
 	gettext("Adjust dpi configuration to your screen (non X11/Android only) e.g. for 4k screens.");