Adding stream detections in the Subtitle Extract and adding logic into the c# linker.

Kyoo.Transcoder/src/Stream.h

@@ -7,12 +7,15 @@
 
 #include <iostream>
 
-//extern "C" API struct Stream
-//{
-//	std::string title;
-//	std::string languageCode;
-//	std::string format;
-//	bool isDefault;
-//	bool isForced;
-//	std::string path;
-//};
+extern "C" struct Stream
+{
+	std::string title;
+	std::string language;
+	std::string format;
+	bool isDefault;
+	bool isForced;
+	std::string path;
+
+	Stream(std::string title, std::string languageCode, std::string format, bool isDefault, bool isForced, std::string path)
+	: title(title), language(languageCode), format(format), isDefault(isDefault), isForced(isForced), path(path) { }
+};

Kyoo.Transcoder/src/Transcoder.cpp

@@ -21,24 +21,25 @@ int Init()
 	return 42;
 }
 
-void ExtractSubtitles(const char* path, const char* outPath)
+int ExtractSubtitles(const char* path, const char* outPath, Stream* streams)
 {
 	AVFormatContext* inputContext = NULL;
 
 	if (avformat_open_input(&inputContext, path, NULL, NULL))
 	{
 		std::cout << "Error: Can't open the file at " << path << std::endl;
-		return;
+		return 0;
 	}
 
 	if (avformat_find_stream_info(inputContext, NULL) < 0)
 	{
 		std::cout << "Error: Could't find streams informations for the file at " << path << std::endl;
-		return;
+		return 0;
 	}
 
 	av_dump_format(inputContext, 0, path, false);
 
+	std::vector<Stream> subtitleStreams;
 	const unsigned int outputCount = inputContext->nb_streams;
 	AVFormatContext** outputList = new AVFormatContext*[outputCount];
 
@@ -53,13 +54,20 @@ void ExtractSubtitles(const char* path, const char* outPath)
 		else
 		{
 			//Get metadata for file name
-			const char* language = av_dict_get(inputStream->metadata, "language", NULL, 0)->value;
+			Stream stream("title", //title
+				av_dict_get(inputStream->metadata, "language", NULL, 0)->value, //language
+				"format", //format
+				false, //isDefault
+				false, //isForced
+				"path"); //path
 
-			std::cout << "Stream #" << i << "(" << language << "), stream type: " << inputCodecpar->codec_type << " codec: " << inputCodecpar->codec_tag << std::endl;
+			subtitleStreams.push_back(stream);
+
+			std::cout << "Stream #" << i << "(" << stream.language << "), stream type: " << inputCodecpar->codec_type << " codec: " << inputCodecpar->codec_tag << std::endl;
 
 			//Create output folder
 			std::stringstream outStream;
-			outStream << outPath << (char)std::filesystem::path::preferred_separator << language;
+			outStream << outPath << (char)std::filesystem::path::preferred_separator << stream.language;
 			std::filesystem::create_directory(outStream.str());
 			
 			//Get file name
@@ -68,7 +76,7 @@ void ExtractSubtitles(const char* path, const char* outPath)
 			fileName = fileName.substr(lastSeparator, fileName.find_last_of('.') - lastSeparator);
 
 			//Construct output file name
-			outStream << fileName << "." << language;
+			outStream << fileName << "." << stream.language;
 			outStream << ".ass";
 			std::string outStr = outStream.str();
 			const char* output = outStr.c_str();
@@ -204,4 +212,8 @@ void ExtractSubtitles(const char* path, const char* outPath)
 	}
 
 	delete[] outputList;
+
+	//std::copy()
+	//streams = subtitleStreams.data(); //SHOULDN'T COPY LIKE THAT, WE OVERRIDE THE POINTER HERE.
+	return subtitleStreams.size();
 }

Kyoo.Transcoder/src/Transcoder.h

@@ -11,4 +11,5 @@
 
 extern "C" API int Init();
 
-extern "C" API void ExtractSubtitles(const char* path, const char* outPath);
+//Take the path of the file and the path of the output directory. It will return the list of subtitle streams in the streams variable. The int returned is the number of subtitles extracted.
+extern "C" API int ExtractSubtitles(const char* path, const char* outPath, Stream* streams);