From b4e751b890320dec0f64237a10a4d8f7e61a340f Mon Sep 17 00:00:00 2001
From: Dario Casalinuovo <b.vitruvio@gmail.com>
Date: Sun, 3 Jul 2016 15:25:42 +0200
Subject: [PATCH] http_streamer: Mutable flag is chosen at runtime

* BeOS Radio now works.
---
 .../plugins/http_streamer/HTTPMediaIO.cpp     | 33 +++++++++++--------
 .../media/plugins/http_streamer/HTTPMediaIO.h |  4 ++-
 2 files changed, 22 insertions(+), 15 deletions(-)

diff --git a/src/add-ons/media/plugins/http_streamer/HTTPMediaIO.cpp b/src/add-ons/media/plugins/http_streamer/HTTPMediaIO.cpp
index 98ddecdef6..ae32db06fc 100644
--- a/src/add-ons/media/plugins/http_streamer/HTTPMediaIO.cpp
+++ b/src/add-ons/media/plugins/http_streamer/HTTPMediaIO.cpp
@@ -81,12 +81,12 @@ private:
 
 HTTPMediaIO::HTTPMediaIO(BUrl url)
 	:
-	BAdapterIO(B_MEDIA_STREAMING | B_MEDIA_SEEK_BACKWARD, HTTP_TIMEOUT),
+	BAdapterIO(HTTP_TIMEOUT),
 	fContext(NULL),
 	fReq(NULL),
 	fListener(NULL),
 	fUrl(url),
-	fTotalSize(0)
+	fIsMutable(false)
 {
 }
 
@@ -96,6 +96,15 @@ HTTPMediaIO::~HTTPMediaIO()
 }
 
 
+void
+HTTPMediaIO::GetFlags(int32* flags) const
+{
+	*flags = B_MEDIA_STREAMING | B_MEDIA_SEEK_BACKWARD;
+	if (fIsMutable)
+		*flags = *flags | B_MEDIA_MUTABLE_SIZE;
+}
+
+
 ssize_t
 HTTPMediaIO::WriteAt(off_t position, const void* buffer, size_t size)
 {
@@ -110,17 +119,6 @@ HTTPMediaIO::SetSize(off_t size)
 }
 
 
-status_t
-HTTPMediaIO::GetSize(off_t* size) const
-{
-	if (fReq == NULL)
-		return B_ERROR;
-
-	*size = fTotalSize;
-	return B_OK;
-}
-
-
 status_t
 HTTPMediaIO::Open()
 {
@@ -142,7 +140,14 @@ HTTPMediaIO::Open()
 	if (ret != B_OK)
 		return ret;
 
-	fTotalSize = fReq->Result().Length();
+	off_t totalSize = fReq->Result().Length();
+
+	// At this point we decide if our size is fixed or mutable,
+	// this will change the behavior of our parent.
+	if (totalSize > 0)
+		BAdapterIO::SetSize(totalSize);
+	else
+		fIsMutable = true;
 
 	return BAdapterIO::Open();
 }
diff --git a/src/add-ons/media/plugins/http_streamer/HTTPMediaIO.h b/src/add-ons/media/plugins/http_streamer/HTTPMediaIO.h
index 1367e693fb..fa5f0b116b 100644
--- a/src/add-ons/media/plugins/http_streamer/HTTPMediaIO.h
+++ b/src/add-ons/media/plugins/http_streamer/HTTPMediaIO.h
@@ -20,11 +20,12 @@ public:
 										HTTPMediaIO(BUrl url);
 	virtual								~HTTPMediaIO();
 
+	virtual void						GetFlags(int32* flags) const;
+
 	virtual	ssize_t						WriteAt(off_t position,
 											const void* buffer, size_t size);
 
 	virtual status_t					SetSize(off_t size);
-	virtual status_t					GetSize(off_t* size) const;
 
 	virtual status_t					Open();
 	virtual void						Close();
@@ -39,6 +40,7 @@ private:
 
 	BUrl								fUrl;
 	off_t								fTotalSize;
+	bool								fIsMutable;
 };
 
 #endif