* Use a static global object to initialize libavformat and libavcodec.

* Turn off tracing in the AVCodecDecoder which I accidentally turned on in
  a previous commit.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31366 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/media/plugins/ffmpeg/AVCodecDecoder.cpp

@@ -20,7 +20,7 @@
 #define DO_PROFILING 0
 
 #undef TRACE
-#define TRACE_AV_CODEC
+//#define TRACE_AV_CODEC
 #ifdef TRACE_AV_CODEC
 #	define TRACE(x...)	printf(x)
 #else
@@ -64,20 +64,6 @@ AVCodecDecoder::AVCodecDecoder()
 {
 	TRACE("AVCodecDecoder::AVCodecDecoder()\n");
 
-	// prevent multiple inits
-	static volatile vint32 ff_init_count = 0;
-	static bool ff_init_done = false;
-	if (atomic_add(&ff_init_count, 1) > 1) {
-		atomic_add(&ff_init_count, -1);
-		// spin until the thread that is initing is done
-		while (!ff_init_done)
-			snooze(20000);
-	} else {
-		avcodec_init();
-		avcodec_register_all();
-		ff_init_done = true;
-	}
-
 	ffc = avcodec_alloc_context();
 	ffpicture = avcodec_alloc_frame();
 	opicture = avcodec_alloc_frame();

src/add-ons/media/plugins/ffmpeg/AVFormatReader.cpp

@@ -77,7 +77,7 @@ position_io_close(URLContext *h)
 }
 
 
-static URLProtocol position_io_protocol = {
+URLProtocol sPositionIOProtocol = {
 	"position_io",
 	position_io_open,
 	position_io_read,
@@ -87,14 +87,6 @@ static URLProtocol position_io_protocol = {
 };
 
 
-static int
-init_libavformat()
-{
-	av_register_all();
-	return av_register_protocol(&position_io_protocol);
-}
-
-
 // #pragma mark - AVFormatReader
 
 

src/add-ons/media/plugins/ffmpeg/FFmpegPlugin.cpp

@@ -12,13 +12,41 @@
 
 #include "FFmpegPlugin.h"
 
+#include <stdio.h>
+
 #include <new>
 
+extern "C" {
+	#include "avformat.h"
+}
+
 #include "AVCodecDecoder.h"
 #include "AVFormatReader.h"
 #include "CodecTable.h"
 
 
+FFmpegPlugin::GlobalInitilizer::GlobalInitilizer()
+{
+	av_register_all();
+		// This will also call av_codec_init() by registering codecs.
+
+	extern URLProtocol sPositionIOProtocol;
+	av_register_protocol(&sPositionIOProtocol);
+}
+
+
+FFmpegPlugin::GlobalInitilizer::~GlobalInitilizer()
+{
+	// TODO: uninit anything here?
+}
+
+
+FFmpegPlugin::GlobalInitilizer FFmpegPlugin::sInitilizer;
+
+
+// #pragma mark -
+
+
 Decoder*
 FFmpegPlugin::NewDecoder(uint index)
 {

src/add-ons/media/plugins/ffmpeg/FFmpegPlugin.h

@@ -24,6 +24,15 @@ public:
 	virtual	Decoder*			NewDecoder(uint index);
 	virtual	status_t			GetSupportedFormats(media_format** formats,
 									size_t* count);
+
+private:
+	class GlobalInitilizer {
+		public:
+								GlobalInitilizer();
+								~GlobalInitilizer();
+	};
+
+	static	GlobalInitilizer	sInitilizer;
 };