michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #if !defined(nsDirectShowSource_h___)
michael@0: #define nsDirectShowSource_h___
michael@0: 
michael@0: #include "BaseFilter.h"
michael@0: #include "BasePin.h"
michael@0: #include "MediaType.h"
michael@0: 
michael@0: #include "nsDeque.h"
michael@0: #include "nsAutoPtr.h"
michael@0: #include "DirectShowUtils.h"
michael@0: #include "mozilla/RefPtr.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: class MediaResource;
michael@0: class ReadRequest;
michael@0: class OutputPin;
michael@0: 
michael@0: 
michael@0: // SourceFilter is an asynchronous DirectShow source filter which
michael@0: // reads from an MediaResource, and supplies data via a pull model downstream
michael@0: // using OutputPin. It us used to supply a generic byte stream into
michael@0: // DirectShow.
michael@0: //
michael@0: // Implements:
michael@0: //  * IBaseFilter
michael@0: //  * IMediaFilter
michael@0: //  * IPersist
michael@0: //  * IUnknown
michael@0: //
michael@0: class DECLSPEC_UUID("5c2a7ad0-ba82-4659-9178-c4719a2765d6")
michael@0: SourceFilter : public media::BaseFilter
michael@0: {
michael@0: public:
michael@0: 
michael@0:   // Constructs source filter to deliver given media type.
michael@0:   SourceFilter(const GUID& aMajorType, const GUID& aSubType);
michael@0:   ~SourceFilter();
michael@0: 
michael@0:   nsresult Init(MediaResource *aResource, int64_t aMP3Offset);
michael@0: 
michael@0:   // BaseFilter overrides.
michael@0:   // Only one output - the byte stream.
michael@0:   int GetPinCount() MOZ_OVERRIDE { return 1; }
michael@0: 
michael@0:   media::BasePin* GetPin(int n) MOZ_OVERRIDE;
michael@0: 
michael@0:   // Get's the media type we're supplying.
michael@0:   const media::MediaType* GetMediaType() const;
michael@0: 
michael@0:   uint32_t GetAndResetBytesConsumedCount();
michael@0: 
michael@0: protected:
michael@0: 
michael@0:   // Our async pull output pin.
michael@0:   nsAutoPtr<OutputPin> mOutputPin;
michael@0: 
michael@0:   // Type of byte stream we output.
michael@0:   media::MediaType mMediaType;
michael@0: 
michael@0: };
michael@0: 
michael@0: } // namespace mozilla
michael@0: 
michael@0: // For mingw __uuidof support
michael@0: #ifdef __CRT_UUID_DECL
michael@0: __CRT_UUID_DECL(mozilla::SourceFilter, 0x5c2a7ad0,0xba82,0x4659,0x91,0x78,0xc4,0x71,0x9a,0x27,0x65,0xd6);
michael@0: #endif
michael@0: 
michael@0: #endif