15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Implement a simple base class for a DirectShow input pin. It may only be 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// used in a single threaded apartment. 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef MEDIA_VIDEO_CAPTURE_WIN_PIN_BASE_WIN_H_ 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEDIA_VIDEO_CAPTURE_WIN_PIN_BASE_WIN_H_ 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Avoid including strsafe.h via dshow as it will cause build warnings. 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define NO_DSHOW_STRSAFE 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <dshow.h> 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/ref_counted.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/win/scoped_comptr.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace media { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class PinBase 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : public IPin, 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public IMemInputPin, 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public base::RefCounted<PinBase> { 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit PinBase(IBaseFilter* owner); 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~PinBase(); 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Function used for changing the owner. 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If the owner is deleted the owner should first call this function 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // with owner = NULL. 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void SetOwner(IBaseFilter* owner); 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Checks if a media type is acceptable. This is called when this pin is 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // connected to an output pin. Must return true if the media type is 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // acceptable, false otherwise. 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool IsMediaTypeValid(const AM_MEDIA_TYPE* media_type) = 0; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Enumerates valid media types. 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual bool GetValidMediaType(int index, AM_MEDIA_TYPE* media_type) = 0; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called when new media is received. Note that this is not on the same 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // thread as where the pin is created. 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(Receive)(IMediaSample* sample) = 0; 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(Connect)(IPin* receive_pin, const AM_MEDIA_TYPE* media_type); 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(ReceiveConnection)(IPin* connector, 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const AM_MEDIA_TYPE* media_type); 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(Disconnect)(); 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(ConnectedTo)(IPin** pin); 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(ConnectionMediaType)(AM_MEDIA_TYPE* media_type); 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(QueryPinInfo)(PIN_INFO* info); 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(QueryDirection)(PIN_DIRECTION* pin_dir); 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(QueryId)(LPWSTR* id); 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(QueryAccept)(const AM_MEDIA_TYPE* media_type); 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(EnumMediaTypes)(IEnumMediaTypes** types); 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(QueryInternalConnections)(IPin** pins, ULONG* no_pins); 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(EndOfStream)(); 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(BeginFlush)(); 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(EndFlush)(); 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(NewSegment)(REFERENCE_TIME start, 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) REFERENCE_TIME stop, 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double dRate); 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Inherited from IMemInputPin. 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(GetAllocator)(IMemAllocator** allocator); 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(NotifyAllocator)(IMemAllocator* allocator, BOOL read_only); 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(GetAllocatorRequirements)(ALLOCATOR_PROPERTIES* properties); 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(ReceiveMultiple)(IMediaSample** samples, 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) long sample_count, 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) long* processed); 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(ReceiveCanBlock)(); 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Inherited from IUnknown. 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD(QueryInterface)(REFIID id, void** object_ptr); 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD_(ULONG, AddRef)(); 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STDMETHOD_(ULONG, Release)(); 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AM_MEDIA_TYPE current_media_type_; 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::win::ScopedComPtr<IPin> connected_pin_; 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // owner_ is the filter owning this pin. We don't reference count it since 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // that would create a circular reference count. 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IBaseFilter* owner_; 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace media 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // MEDIA_VIDEO_CAPTURE_WIN_PIN_BASE_WIN_H_ 108