cli: add ability to log ffmpeg codecs

rpcs3/main.cpp

@@ -65,6 +65,7 @@ DYNAMIC_IMPORT("ntdll.dll", NtSetTimerResolution, NTSTATUS(ULONG DesiredResoluti
 #include "Utilities/Thread.h"
 #include "Utilities/File.h"
 #include "Utilities/StrUtil.h"
+#include "util/media_utils.h"
 #include "rpcs3_version.h"
 #include "Emu/System.h"
 #include "Emu/system_utils.hpp"
@@ -303,6 +304,7 @@ constexpr auto arg_rsx_capture  = "rsx-capture";
 constexpr auto arg_timer        = "high-res-timer";
 constexpr auto arg_verbose_curl = "verbose-curl";
 constexpr auto arg_any_location = "allow-any-location";
+constexpr auto arg_codecs       = "codecs";
 
 int find_arg(std::string arg, int& argc, char* argv[])
 {
@@ -664,12 +666,36 @@ int main(int argc, char** argv)
 	parser.addOption(QCommandLineOption(arg_timer, "Enable high resolution timer for better performance (windows)", "enabled", "1"));
 	parser.addOption(QCommandLineOption(arg_verbose_curl, "Enable verbose curl logging."));
 	parser.addOption(QCommandLineOption(arg_any_location, "Allow RPCS3 to be run from any location. Dangerous"));
+	const QCommandLineOption codec_option(arg_codecs, "List ffmpeg codecs");
+	parser.addOption(codec_option);
 	parser.process(app->arguments());
 
 	// Don't start up the full rpcs3 gui if we just want the version or help.
 	if (parser.isSet(version_option) || parser.isSet(help_option))
 		return 0;
 
+	if (parser.isSet(codec_option))
+	{
+#ifdef _WIN32
+		if (AttachConsole(ATTACH_PARENT_PROCESS) || AllocConsole())
+		{
+			[[maybe_unused]] const auto con_out = freopen("CONOUT$", "w", stdout);
+			[[maybe_unused]] const auto con_err = freopen("CONOUT$", "w", stderr);
+		}
+#endif
+		for (const utils::ffmpeg_codec& codec : utils::list_ffmpeg_decoders())
+		{
+			fprintf(stdout, "Found ffmpeg decoder: %s (%d, %s)\n", codec.name.c_str(), codec.codec_id, codec.long_name.c_str());
+			sys_log.success("Found ffmpeg decoder: %s (%d, %s)", codec.name, codec.codec_id, codec.long_name);
+		}
+		for (const utils::ffmpeg_codec& codec : utils::list_ffmpeg_encoders())
+		{
+			fprintf(stdout, "Found ffmpeg encoder: %s (%d, %s)\n", codec.name.c_str(), codec.codec_id, codec.long_name.c_str());
+			sys_log.success("Found ffmpeg encoder: %s (%d, %s)", codec.name, codec.codec_id, codec.long_name);
+		}
+		return 0;
+	}
+
 	// Set curl to verbose if needed
 	rpcs3::curl::g_curl_verbose = parser.isSet(arg_verbose_curl);
 

rpcs3/util/media_utils.cpp

@@ -65,6 +65,35 @@ namespace utils
 		return av_error;
 	}
 
+	std::vector<ffmpeg_codec> list_ffmpeg_codecs(bool list_decoders)
+	{
+		std::vector<ffmpeg_codec> codecs;
+		void* opaque = nullptr;
+		for (const AVCodec* codec = av_codec_iterate(&opaque); !!codec; codec = av_codec_iterate(&opaque))
+		{
+			if (list_decoders ? av_codec_is_decoder(codec) : av_codec_is_encoder(codec))
+			{
+				codecs.emplace_back(
+					static_cast<int>(codec->id),
+					codec->name ? codec->name : "unknown",
+					codec->long_name ? codec->long_name : "unknown"
+				);
+			}
+		}
+		std::sort(codecs.begin(), codecs.end(), [](const ffmpeg_codec& l, const ffmpeg_codec& r){ return l.name < r.name; });
+		return codecs;
+	}
+
+	std::vector<ffmpeg_codec> list_ffmpeg_decoders()
+	{
+		return list_ffmpeg_codecs(true);
+	}
+
+	std::vector<ffmpeg_codec> list_ffmpeg_encoders()
+	{
+		return list_ffmpeg_codecs(false);
+	}
+
 	std::pair<bool, media_info> get_media_info(const std::string& path, s32 av_media_type)
 	{
 		media_info info{};
@@ -721,10 +750,10 @@ namespace utils
 				void* opaque = nullptr;
 				for (const AVCodec* codec = av_codec_iterate(&opaque); !!codec; codec = av_codec_iterate(&opaque))
 				{
-					if (const AVCodec* encoder = avcodec_find_encoder(codec->id); !!encoder)
+					if (av_codec_is_encoder(codec))
 					{
-						media_log.notice("video_encoder: Found video_codec %d = %s", static_cast<int>(used_codec), encoder->name);
-						av_output_format = find_format(encoder);
+						media_log.notice("video_encoder: Found video_codec %d = %s", static_cast<int>(codec->id), codec->name);
+						av_output_format = find_format(codec);
 
 						if (av_output_format)
 						{

rpcs3/util/media_utils.h

@@ -14,6 +14,16 @@ namespace utils
 {
 	std::string av_error_to_string(int error);
 
+	struct ffmpeg_codec
+	{
+		int codec_id{};
+		std::string name;
+		std::string long_name;
+	};
+
+	std::vector<ffmpeg_codec> list_ffmpeg_decoders();
+	std::vector<ffmpeg_codec> list_ffmpeg_encoders();
+
 	struct media_info
 	{
 		std::string path;