Updating README

README.md

@@ -1,7 +1,61 @@
 # Dragoon
 
+![Build status](https://builds.metaunix.net/api/badges/17/status.svg)
+
 The Bit Goblin video transcoder.
 
+## Installing from RPM
+
+Installing from the Bit Goblin repository is easy! Add the following repo file to `/etc/yum.repos.d/bitgoblin.repo`:
+
+```
+[bitgoblin]
+name=Bit Goblin repository
+baseurl=http://repo.metaunix.net/dnf
+enabled=1
+gpgcheck=0
+```
+
+Update your package sources just to make sure all was added properly:
+
+```
+dnf updateinfo
+```
+
+Then install dragoon! Use the command below if you DON'T want DNF to install a bunch of unnecessary stuff to meet OpenJDK's weak dependencies; otherwise a regular `dnf install dragoon` is fine:
+
+```
+dnf --setopt=install_weak_deps=False --best install dragoon
+```
+
+## Configuration
+
+If you were paying attention to Dragoon's output, you would have noticed that it failed with a complaint about not finding a configuration file. The location might move in the future or even be configurable, but for now you need to have a TOML file located at `~/.config/dragoon.toml` with at minimum the following contents:
+
+```toml
+# This example transcodes footage to DNxHD 1080p60 for use in video editors like DaVinci Resolve.
+[transcoder]
+repo_path = '~/videos' # location of the videos to transcode
+interval = 15 # number of minutes in between transcoding runs
+video_format = 'mov' # video container format
+video_codec = 'dnxhd' # video codec to use
+video_parameters = 'scale=1920x1080,fps=60,format=yuv422p' # video extra format parameters flag - this will be broken later into separate attributes
+video_profile = 'dnxhr_hq' # DNxHD has multiple presets for various video qualities
+audio_codec = 'pcm_s16le' # audio codec to use
+```
+
+You can also run `./dragoon.jar -i` to install a new configuration file with some "workable" defaults. You can pair this with the `-c /path/to/config.toml` flag to specify a location to put the config file.
+
+## CLI Parameters
+
+Dragoon's CLI features some flags to help you get moving:
+
+`-h` - prints the help message.
+
+`-c /path/to/config.toml` - specify a path to a configuration file.
+
+`-i` - install a new configuration file.
+
 ## Building
 
 Currently this project is targeting Java 17 LTS and uses Maven to manage the software lifecycle. Thus, you must have a Java 17 JDK and Maven installed to build this project.
@@ -23,18 +77,3 @@ Now that the needed tools are installed, you should be able to build this projec
 Then you can run the transcoder:
 
 `java -jar target/Dragon-VERSION-jar-with-dependencies.jar`
-
-## Configuration
-
-If you were paying attention to Dragoon's output, you would have noticed that it failed with a complaint about not finding a configuration file. The location might move in the future or even be configurable, but for now you need to have a TOML file located at `~/.config/dragoon.toml` with at minimum the following contents:
-
-```toml
-# This example transcodes footage to DNxHD 1080p60 for use in video editors like DaVinci Resolve.
-[transcoder]
-repo_path = '~/videos' # location of the videos to transcode
-video_format = 'mov' # video container format
-video_codec = 'dnxhd' # video codec to use
-video_parameters = 'scale=1920x1080,fps=60,format=yuv422p' # video extra format parameters flag - this will be broken later into separate attributes
-video_profile = 'dnxhr_hq' # DNxHD has multiple presets for various video qualities
-audio_codec = 'pcm_s16le' # audio codec to use
-```

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>tech.bitgoblin</groupId>
     <artifactId>dragoon</artifactId>
-    <version>0.3.9</version>
+    <version>0.3.13</version>
 
     <name>Dragoon</name>
     <url>https://www.bitgoblin.tech</url>
@@ -182,7 +182,7 @@
                     <packager>Bit Goblin</packager>
                     <prefix>/opt</prefix>
                     <changelogFile>${project.basedir}/src/build/changelog.txt</changelogFile>
-                    <targetOs>linux</targetOs>
+                    <targetOs>${os.name}</targetOs>
                     <mappings>
                         <mapping>
                             <directory>/opt/dragoon</directory>
@@ -238,7 +238,7 @@
                     </mappings>
                     <requires>
                         <require>java-17-openjdk</require>
-                        <require>ffmpeg</require>
+                        <require>ffmpeg-free</require>
                     </requires>
                     <preinstallScriptlet>
                         <script>echo "installing ${project.name} now"</script>

src/main/java/tech/bitgoblin/config/Cmd.java

@@ -1,28 +1,80 @@
 package tech.bitgoblin.config;
 
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+
 import org.apache.commons.cli.*;
 
+import tech.bitgoblin.Logger;
+import tech.bitgoblin.io.IOUtils;
+
 public class Cmd {
 
+	private String helpHeader = "Start the Dragoon video transcoder.";
+	private String helpFooter = "Report issues at https://git.metaunix.net/BitGoblin/dragoon/issues/";
+
 	private String configPath = "~/.config/dragoon.toml";
 
 	public Cmd(String[] args) throws ParseException {
 		Options options = new Options();
 
-    Option configPath = new Option("c", "configPath", true, "configuration file path (defaults to /etc/dragoon/config.toml)");
+		// print help for the user
+		Option helpOption = new Option("h", "help", false, "Display CLI usage and options.");
+		options.addOption(helpOption);
+		
+		// install a config file in the user's home directory
+		Option installOption = new Option("i", "install", false, "Install configuration file in the user's home directory (or specify a location with -c).");
+		options.addOption(installOption);
+		
+		// allow the user to specify a config file manually
+	    Option configPath = new Option("c", "configPath", true, "Configuration file path (defaults to " + this.configPath + ")");
 	    configPath.setRequired(false);
 	    options.addOption(configPath);
 	
 	    CommandLineParser parser = new DefaultParser();
-    HelpFormatter formatter = new HelpFormatter();
 	    CommandLine cmd = parser.parse(options, args);
 	    
+	    // check if the help option was called
+	    if (cmd.hasOption("help")) {
+	    	this.printHelp(options);
+	    }
+	    
+	    // check if the install option was called
+	    if (cmd.hasOption("install")) {
+	    	try {
+				this.installConfig();
+			} catch (IOException e) {
+				e.printStackTrace();
+				Logger.logger.error("Unable to install new configuration file; please refer to the stack trace above to resolve the error.");
+				System.exit(2);
+			}
+	    }
+	
 	    // set the configPath variable if the option was passed to the program
 	    if (cmd.hasOption("configPath")) {
 	    	this.configPath = cmd.getOptionValue("configPath");
 	    }
 	}
 
+	public void printHelp(Options options) {
+		HelpFormatter formatter = new HelpFormatter();
+		formatter.printHelp("Dragoon", this.helpHeader, options, this.helpFooter, true);
+		
+		System.exit(0);
+	}
+	
+	public void installConfig() throws IOException {
+		ClassLoader classloader = Thread.currentThread().getContextClassLoader();
+		InputStream is = classloader.getResourceAsStream("example.config");
+		Files.copy(is, Paths.get(IOUtils.resolveTilda(this.configPath)), StandardCopyOption.REPLACE_EXISTING);
+		Logger.logger.info("A new configuration file has been installed at " + this.configPath + ".");
+		
+		System.exit(0);
+	}
+
 	public String getConfigPath() {
 		return this.configPath;
 	}

src/main/java/tech/bitgoblin/transcoder/Transcoder.java

@@ -63,18 +63,28 @@ public class Transcoder {
     String filename = Paths.get(filePath).getFileName().toString();
     String outputPath = Paths.get(this.repo.getOutputPath(), String.format("%s.mov", filename)).toString();
 
-    String cmd = String.format("%s -i %s -y -f %s -c:v %s -vf %s -profile:v %s -c:a %s %s",
-      this.ffmpeg_path, // FFMPEG binary path
-      sourceFile.toString(), // input file
-      this.config.getString("transcoder.video_format"), // video container format
-      this.config.getString("transcoder.video_codec"), // video codec
-      this.config.getString("transcoder.video_parameters"), // video format
-      this.config.getString("transcoder.video_profile"), // video profile
-      this.config.getString("transcoder.audio_codec"), // audio codec
-      outputPath // output file path
+    // build the custom video parameters string
+    String videoParameters = String.format("scale=%s,fps=%s,format=%s",
+        this.config.getString("transcoder.video_resolution"), // video resolution
+        this.config.getString("transcoder.video_framerate"), // video frame rate
+        this.config.getString("transcoder.video_color") // video color format
     );
 
-    ProcessBuilder pb = new ProcessBuilder(cmd.split("\\s+"));
+    String cmd = String.format("%s -i INPUT_FILE -y -f %s -c:v %s -vf %s -profile:v %s -c:a %s OUTPUT_FILE",
+      this.ffmpeg_path, // FFMPEG binary path
+      this.config.getString("transcoder.video_format"), // video container format
+      this.config.getString("transcoder.video_codec"), // video codec
+      videoParameters, // custom video parameters
+      this.config.getString("transcoder.video_profile"), // video profile
+      this.config.getString("transcoder.audio_codec") // audio codec
+    );
+
+    String[] cmdArr = cmd.split("\\s+");
+    cmdArr[2] = sourceFile.toString();
+    cmdArr[cmdArr.length - 1] = outputPath;
+    System.out.println(String.join(" ", cmdArr));
+
+    ProcessBuilder pb = new ProcessBuilder(cmdArr);
     pb.inheritIO(); // use the java processes' input and output streams
     try {
       Process process = pb.start();

src/main/resources/example.config

@@ -0,0 +1,10 @@
+[transcoder]
+repo_path = '~/dragoon'
+interval = 15
+video_format = 'mov'
+video_codec = 'dnxhd'
+video_profile = 'dnxhr_hq'
+video_resolution = '1920x1080'
+video_framerate = '60'
+video_color = 'yuv422p'
+audio_codec = 'pcm_s16le'