From 4440ef8efc77d1bd7838885e83d41e54deb5a3b8 Mon Sep 17 00:00:00 2001
From: Surajit Podder <spodder@codeaurora.org>
Date: Thu, 23 Jan 2014 13:24:34 +0530
Subject: DataSource: Remove global variables in DataSource related to sniff

Remove global variables related to sniff, and added Sniffer class
to implement the sniff functionality with non-static members.

Change-Id: I6fbd0ba5b686e09fda11d78cdd687a69c81a6bdf
CRs-Fixed: 567753
---
 include/media/stagefright/DataSource.h | 38 +++++++++++++++++++++++++++++-----
 1 file changed, 33 insertions(+), 5 deletions(-)

(limited to 'include')

diff --git a/include/media/stagefright/DataSource.h b/include/media/stagefright/DataSource.h
index 0c31e72..de31ff0 100644
--- a/include/media/stagefright/DataSource.h
+++ b/include/media/stagefright/DataSource.h
@@ -36,6 +36,37 @@ class  IDataSource;
 struct IMediaHTTPService;
 class String8;
 struct HTTPBase;
+class DataSource;
+
+class Sniffer : public RefBase {
+public:
+    Sniffer();
+
+    ////////////////////////////////////////////////////////////////////////////
+
+    bool sniff(DataSource *source, String8 *mimeType, float *confidence, sp<AMessage> *meta);
+
+    // The sniffer can optionally fill in "meta" with an AMessage containing
+    // a dictionary of values that helps the corresponding extractor initialize
+    // its state without duplicating effort already exerted by the sniffer.
+    typedef bool (*SnifferFunc)(
+            const sp<DataSource> &source, String8 *mimeType,
+            float *confidence, sp<AMessage> *meta);
+
+    //if isExtendedExtractor = true, store the location of the sniffer to register
+    void registerSniffer_l(SnifferFunc func);
+    void registerDefaultSniffers();
+
+    virtual ~Sniffer() {}
+
+private:
+    Mutex mSnifferMutex;
+    List<SnifferFunc> mSniffers;
+    List<SnifferFunc>::iterator extendedSnifferPosition;
+
+    Sniffer(const Sniffer &);
+    Sniffer &operator=(const Sniffer &);
+};
 
 class DataSource : public RefBase {
 public:
@@ -57,7 +88,7 @@ public:
     static sp<DataSource> CreateMediaHTTP(const sp<IMediaHTTPService> &httpService);
     static sp<DataSource> CreateFromIDataSource(const sp<IDataSource> &source);
 
-    DataSource() {}
+    DataSource() : mSniffer(new Sniffer()) {}
 
     virtual status_t initCheck() const = 0;
 
@@ -111,10 +142,7 @@ public:
 protected:
     virtual ~DataSource() {}
 
-private:
-    static Mutex gSnifferMutex;
-    static List<SnifferFunc> gSniffers;
-    static bool gSniffersRegistered;
+    sp<Sniffer> mSniffer;
 
     static void RegisterSniffer_l(SnifferFunc func);
 
-- 
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