1 files changed, 95 insertions, 0 deletions
diff --git a/dom/media/directshow/AudioSinkFilter.h b/dom/media/directshow/AudioSinkFilter.h
new file mode 100644
index 000000000..85abdfccf
--- /dev/null
+++ b/dom/media/directshow/AudioSinkFilter.h
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#if !defined(AudioSinkFilter_h_)
+#define AudioSinkFilter_h_
+
+#include "BaseFilter.h"
+#include "DirectShowUtils.h"
+#include "nsAutoPtr.h"
+#include "mozilla/RefPtr.h"
+
+namespace mozilla {
+
+class AudioSinkInputPin;
+class SampleSink;
+
+// Filter that acts as the end of the graph. Audio samples input into
+// this filter block the calling thread, and the calling thread is
+// unblocked when the decode thread extracts the sample. The samples
+// input into this filter are stored in the SampleSink, where the blocking
+// is implemented. The input pin owns the SampleSink.
+class AudioSinkFilter: public mozilla::media::BaseFilter,
+                       public IMediaSeeking
+{
+
+public:
+  AudioSinkFilter(const wchar_t* aObjectName, HRESULT* aOutResult);
+  virtual ~AudioSinkFilter();
+
+  // Gets the input pin's sample sink.
+  SampleSink* GetSampleSink();
+
+  // IUnknown implementation.
+  STDMETHODIMP QueryInterface(REFIID aIId, void **aInterface);
+  STDMETHODIMP_(ULONG) AddRef();
+  STDMETHODIMP_(ULONG) Release();
+
+  //  --------------------------------------------------------------------
+  //  CBaseFilter methods
+  int GetPinCount ();
+  mozilla::media::BasePin* GetPin ( IN int Index);
+  STDMETHODIMP Pause ();
+  STDMETHODIMP Stop ();
+  STDMETHODIMP GetClassID ( OUT CLSID * pCLSID);
+  STDMETHODIMP Run(REFERENCE_TIME tStart);
+  // IMediaSeeking Methods...
+
+  // We defer to SourceFilter, but we must expose the interface on
+  // the output pins. Seeking commands come upstream from the renderers,
+  // but they must be actioned at the source filters.
+  STDMETHODIMP GetCapabilities(DWORD* aCapabilities);
+  STDMETHODIMP CheckCapabilities(DWORD* aCapabilities);
+  STDMETHODIMP IsFormatSupported(const GUID* aFormat);
+  STDMETHODIMP QueryPreferredFormat(GUID* aFormat);
+  STDMETHODIMP GetTimeFormat(GUID* aFormat);
+  STDMETHODIMP IsUsingTimeFormat(const GUID* aFormat);
+  STDMETHODIMP SetTimeFormat(const GUID* aFormat);
+  STDMETHODIMP GetDuration(LONGLONG* pDuration);
+  STDMETHODIMP GetStopPosition(LONGLONG* pStop);
+  STDMETHODIMP GetCurrentPosition(LONGLONG* aCurrent);
+  STDMETHODIMP ConvertTimeFormat(LONGLONG* aTarget,
+                                 const GUID* aTargetFormat,
+                                 LONGLONG aSource,
+                                 const GUID* aSourceFormat);
+  STDMETHODIMP SetPositions(LONGLONG* aCurrent,
+                            DWORD aCurrentFlags,
+                            LONGLONG* aStop,
+                            DWORD aStopFlags);
+  STDMETHODIMP GetPositions(LONGLONG* aCurrent,
+                            LONGLONG* aStop);
+  STDMETHODIMP GetAvailable(LONGLONG* aEarliest,
+                            LONGLONG* aLatest);
+  STDMETHODIMP SetRate(double aRate);
+  STDMETHODIMP GetRate(double* aRate);
+  STDMETHODIMP GetPreroll(LONGLONG* aPreroll);
+
+  //  --------------------------------------------------------------------
+  //  class factory calls this
+  static IUnknown * CreateInstance (IN LPUNKNOWN punk, OUT HRESULT * phr);
+
+private:
+  CriticalSection mFilterCritSec;
+
+  // Note: The input pin defers its refcounting to the sink filter, so when
+  // the input pin is addrefed, what actually happens is the sink filter is
+  // addrefed.
+  nsAutoPtr<AudioSinkInputPin> mInputPin;
+};
+
+} // namespace mozilla
+
+#endif // AudioSinkFilter_h_