implement a recursive scanning of /dev/audio/old/ to find devices. Untested yet.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20359 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/media/media-add-ons/legacy/Jamfile

@@ -8,5 +8,5 @@ Addon legacy.media_addon : media :
 	LegacyAudioProducer.cpp
 	LegacyMediaAddOn.cpp
 	: false
-	: media
+	: be media
 ;

src/add-ons/media/media-add-ons/legacy/LegacyMediaAddOn.cpp

@@ -7,11 +7,17 @@
 
 #include <media/MediaAddOn.h>
 
+#include <Directory.h>
+#include <Entry.h>
+#include <Path.h>
+#include <String.h>
+
 #include "LegacyMediaAddOn.h"
 
 #include "LegacyAudioConsumer.h"
 #include "LegacyAudioProducer.h"
 
+#define LEGACY_DEVICE_PATH_BASE "/dev/audio/old"
 
 LegacyMediaAddOn::LegacyMediaAddOn( image_id imid )
 	: BMediaAddOn( imid )
@@ -59,6 +65,42 @@ LegacyMediaAddOn::InstantiateNodeFor( const flavor_info *info, BMessage *config,
 	return NULL;
 }
 
+status_t
+LegacyMediaAddOn::RecursiveScanForDevices(const char *path)
+{
+	BDirectory d(path ? path : LEGACY_DEVICE_PATH_BASE);
+	if (d.InitCheck() < B_OK)
+		return d.InitCheck();
+	BEntry ent;
+	while (d.GetNextEntry(&ent) == B_OK) {
+		struct stat st;
+		char name[B_FILE_NAME_LENGTH];
+		ent.GetName(name);
+		if (d.GetStatFor(name, &st) < 0)
+			continue;
+		BPath p(&ent);
+		// we're only interested in folders...
+		if (S_ISDIR(st.st_mode)) {
+			RecursiveScanForDevices(p.Path());
+			// discard error
+			continue;
+		}
+		// and (char) devices
+		if (!S_ISCHR(st.st_mode))
+			continue;
+		
+		// we want relative path
+		BString s(p.Path());
+		s.RemoveFirst(LEGACY_DEVICE_PATH_BASE"/");
+		
+		// XXX: should check first for consumer or producer...
+		// XXX: use a struct/class
+		fConsumers.AddItem((void *)s.String());
+		//XXX: only cons for now
+		//fProducers.AddItem(s.String());
+	}
+	return B_OK;
+}
 
 BMediaAddOn *
 make_media_addon( image_id imid )

src/add-ons/media/media-add-ons/legacy/LegacyMediaAddOn.h

@@ -2,6 +2,7 @@
 #define _LEGACY_MEDIA_ADDON_H
 
 #include <media/MediaAddOn.h>
+#include <List.h>
 
 #include "LegacyAudioConsumer.h"
 //#include "LegacyAudioProducer.h"
@@ -29,14 +30,16 @@ class LegacyMediaAddOn : public BMediaAddOn
 		virtual	status_t	AutoStart( int in_count, BMediaNode **out_node, int32 *out_internal_id, bool *out_has_more )
 								{ return B_ERROR; }
 
+		status_t			RecursiveScanForDevices(const char *path=NULL);
+
 	private:
 		status_t			fInitStatus;
 
 		flavor_info			fFlavorInfo;
 		media_format		fMediaFormat;
 
-		//BList				*consumers;
+		BList				fConsumers;
-		//BList				*producers;
+		BList				fProducers;
 
 		LegacyAudioConsumer	*consumer;
 };