BufferedDataSource to support server without range request support

This patch will enable BufferedDataSource to support servers with
no range request support. It will start a probe request of 1 byte
size besides the regular request. If the server does not support
range request, we will turn on the is_streamed flag of FFmpeg and
will not do any seeking.

BUG=17628
TEST=test_shell_tests --gtest_filter=BufferedDataSource.*

Review URL: http://codereview.chromium.org/160076

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@21999 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 6 insertions, 0 deletions

diff --git a/media/base/pipeline_impl.h b/media/base/pipeline_impl.h
index 02c8bce..e83822d 100644
--- a/media/base/pipeline_impl.h
+++ b/media/base/pipeline_impl.h
@@ -81,6 +81,7 @@ class PipelineImpl : public Pipeline, public FilterHost {
   virtual int64 GetBufferedBytes() const;
   virtual int64 GetTotalBytes() const;
   virtual void GetVideoSize(size_t* width_out, size_t* height_out) const;
+  virtual bool IsStreaming() const;
   virtual PipelineError GetError() const;
 
  private:
@@ -129,6 +130,7 @@ class PipelineImpl : public Pipeline, public FilterHost {
   virtual void SetTotalBytes(int64 total_bytes);
   virtual void SetBufferedBytes(int64 buffered_bytes);
   virtual void SetVideoSize(size_t width, size_t height);
+  virtual void SetStreaming(bool streamed);
 
   // Method called during initialization to insert a mime type into the
   // |rendered_mime_types_| set.
@@ -267,6 +269,10 @@ class PipelineImpl : public Pipeline, public FilterHost {
   size_t video_width_;
   size_t video_height_;
 
+  // Sets by the filters to indicate whether the data source is a streaming
+  // source.
+  bool streaming_;
+
   // Current volume level (from 0.0f to 1.0f).  This value is set immediately
   // via SetVolume() and a task is dispatched on the message loop to notify the
   // filters.