Squashed commit of the following:

commit 5bb012f0065f7ffaaeb4f569d71f0e3a8d6b19c3
Author: Andreas Huber <andih@google.com>
Date:   Fri Aug 14 10:40:08 2009 -0700

    An attempt at fixing export using the qcom encoders. More quirks.

commit 0690e76bfa48118a68287ccf1bbfa82febaa620c
Author: Andreas Huber <andih@google.com>
Date:   Fri Aug 14 09:08:28 2009 -0700

    Callbacks are now dispatched from a separate thread in OMX.

commit c6571a039526df29b6343f9a1971dbc019088c61
Author: Andreas Huber <andih@google.com>
Date:   Thu Aug 13 15:42:25 2009 -0700

    Massive API changes throughout stagefright, smart pointers everywhere.

commit 900612af6a0555664d9ba195112cd859491265f4
Author: Andreas Huber <andih@google.com>
Date:   Thu Aug 13 13:33:12 2009 -0700

    OMXCodecs now properly shutdown.

commit 96732f05e1b0603dcd1b11f16a23512592eeb4f5
Author: Andreas Huber <andih@google.com>
Date:   Thu Aug 13 12:04:04 2009 -0700

    More work on JPEG decoding using the hardware OMX component.

commit 63839a073ac393e3a130434ba467969053b694ad
Author: Andreas Huber <andih@google.com>
Date:   Wed Aug 12 13:13:31 2009 -0700

    An attempt to drive the JPEG decoder OMX node.

commit 3ac2fe5ab2926eda81b2123610b2434c645294ff
Author: Andreas Huber <andih@google.com>
Date:   Tue Aug 11 16:38:21 2009 -0700

    Renamed StateMachine to OMXCodec and put it in its proper place.

commit 247da75a96bf8881956413023dd49a84d5b4f5b2
Author: Andreas Huber <andih@google.com>
Date:   Tue Aug 11 16:06:19 2009 -0700

    Statemachine is now a full-fledged MediaSource.

commit 045244f6771fa0b9b329495c953afda900a84b71
Author: Andreas Huber <andih@google.com>
Date:   Fri Aug 7 09:16:54 2009 -0700

    Properly setup the input format when exporting to AMR audio.

commit 271b984cb32c5cd9e46e3f90ae121f334e4b8da9
Author: Andreas Huber <andih@google.com>
Date:   Thu Aug 6 09:59:38 2009 -0700

    Added some code to test audio encoding to the OMX harness.

commit 79af4748e4af33bd66d3fbac606e332a69741cf4
Author: Andreas Huber <andih@google.com>
Date:   Wed Aug 5 14:36:22 2009 -0700

    Merge the old OMXDecoder and the new, shiny, StateMachine code.

commit 91cf5dd77a8762bc10a0b2ffce35e3bbeb262231
Author: Andreas Huber <andih@google.com>
Date:   Tue Aug 4 17:41:43 2009 -0700

    A new harness to test OMX node compliance (and quirks).

1 files changed, 9 insertions, 3 deletions

diff --git a/include/media/stagefright/DataSource.h b/include/media/stagefright/DataSource.h
index 31eea27..f46f0af 100644
--- a/include/media/stagefright/DataSource.h
+++ b/include/media/stagefright/DataSource.h
@@ -22,19 +22,22 @@
 
 #include <utils/Errors.h>
 #include <utils/List.h>
+#include <utils/RefBase.h>
 #include <utils/threads.h>
 
 namespace android {
 
 class String8;
 
-class DataSource {
+class DataSource : public RefBase {
 public:
     DataSource() {}
-    virtual ~DataSource() {}
 
     virtual ssize_t read_at(off_t offset, void *data, size_t size) = 0;
 
+    // Convenience methods:
+    bool getUInt16(off_t offset, uint16_t *x);
+
     // May return ERROR_UNSUPPORTED.
     virtual status_t getSize(off_t *size);
 
@@ -43,11 +46,14 @@ public:
     bool sniff(String8 *mimeType, float *confidence);
 
     typedef bool (*SnifferFunc)(
-            DataSource *source, String8 *mimeType, float *confidence);
+            const sp<DataSource> &source, String8 *mimeType, float *confidence);
 
     static void RegisterSniffer(SnifferFunc func);
     static void RegisterDefaultSniffers();
 
+protected:
+    virtual ~DataSource() {}
+
 private:
     static Mutex gSnifferMutex;
     static List<SnifferFunc> gSniffers;