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/*
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* DirectShow capture interface
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* Copyright (c) 2010 Ramiro Polla
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/mem.h"
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#include "dshow_capture.h"
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#include <stddef.h>
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#define imemoffset offsetof(DShowPin, imemvtbl)
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DECLARE_QUERYINTERFACE(pin, DShowPin,
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{ {&IID_IUnknown,0}, {&IID_IPin,0}, {&IID_IMemInputPin,imemoffset} })
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DECLARE_ADDREF(pin, DShowPin)
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DECLARE_RELEASE(pin, DShowPin)
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long WINAPI ff_dshow_pin_Connect(DShowPin *this, IPin *pin, const AM_MEDIA_TYPE *type)
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{
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dshowdebug("ff_dshow_pin_Connect(%p, %p, %p)\n", this, pin, type);
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/* Input pins receive connections. */
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return S_FALSE;
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}
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long WINAPI ff_dshow_pin_ReceiveConnection(DShowPin *this, IPin *pin,
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const AM_MEDIA_TYPE *type)
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{
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enum dshowDeviceType devtype = this->filter->type;
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dshowdebug("ff_dshow_pin_ReceiveConnection(%p)\n", this);
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if (!pin)
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return E_POINTER;
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if (this->connectedto)
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return VFW_E_ALREADY_CONNECTED;
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ff_print_AM_MEDIA_TYPE(type);
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if (devtype == VideoDevice) {
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if (!IsEqualGUID(&type->majortype, &MEDIATYPE_Video))
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return VFW_E_TYPE_NOT_ACCEPTED;
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} else {
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if (!IsEqualGUID(&type->majortype, &MEDIATYPE_Audio))
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return VFW_E_TYPE_NOT_ACCEPTED;
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}
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IPin_AddRef(pin);
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this->connectedto = pin;
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ff_copy_dshow_media_type(&this->type, type);
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return S_OK;
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}
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long WINAPI ff_dshow_pin_Disconnect(DShowPin *this)
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{
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dshowdebug("ff_dshow_pin_Disconnect(%p)\n", this);
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if (this->filter->state != State_Stopped)
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return VFW_E_NOT_STOPPED;
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if (!this->connectedto)
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return S_FALSE;
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IPin_Release(this->connectedto);
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this->connectedto = NULL;
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return S_OK;
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}
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long WINAPI ff_dshow_pin_ConnectedTo(DShowPin *this, IPin **pin)
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{
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dshowdebug("ff_dshow_pin_ConnectedTo(%p)\n", this);
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if (!pin)
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return E_POINTER;
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if (!this->connectedto)
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return VFW_E_NOT_CONNECTED;
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IPin_AddRef(this->connectedto);
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*pin = this->connectedto;
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return S_OK;
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}
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long WINAPI ff_dshow_pin_ConnectionMediaType(DShowPin *this, AM_MEDIA_TYPE *type)
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{
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dshowdebug("ff_dshow_pin_ConnectionMediaType(%p)\n", this);
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if (!type)
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return E_POINTER;
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if (!this->connectedto)
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return VFW_E_NOT_CONNECTED;
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return ff_copy_dshow_media_type(type, &this->type);
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}
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long WINAPI ff_dshow_pin_QueryPinInfo(DShowPin *this, PIN_INFO *info)
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{
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dshowdebug("ff_dshow_pin_QueryPinInfo(%p)\n", this);
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if (!info)
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return E_POINTER;
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if (this->filter)
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ff_dshow_filter_AddRef(this->filter);
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info->pFilter = (IBaseFilter *) this->filter;
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info->dir = PINDIR_INPUT;
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wcscpy(info->achName, L"Capture");
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return S_OK;
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}
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long WINAPI ff_dshow_pin_QueryDirection(DShowPin *this, PIN_DIRECTION *dir)
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{
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dshowdebug("ff_dshow_pin_QueryDirection(%p)\n", this);
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if (!dir)
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return E_POINTER;
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*dir = PINDIR_INPUT;
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return S_OK;
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}
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long WINAPI ff_dshow_pin_QueryId(DShowPin *this, wchar_t **id)
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{
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dshowdebug("ff_dshow_pin_QueryId(%p)\n", this);
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if (!id)
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return E_POINTER;
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*id = wcsdup(L"libAV Pin");
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return S_OK;
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}
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long WINAPI ff_dshow_pin_QueryAccept(DShowPin *this, const AM_MEDIA_TYPE *type)
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{
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dshowdebug("ff_dshow_pin_QueryAccept(%p)\n", this);
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return S_FALSE;
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}
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long WINAPI ff_dshow_pin_EnumMediaTypes(DShowPin *this, IEnumMediaTypes **enumtypes)
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{
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const AM_MEDIA_TYPE *type = NULL;
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DShowEnumMediaTypes *new;
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dshowdebug("ff_dshow_pin_EnumMediaTypes(%p)\n", this);
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if (!enumtypes)
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return E_POINTER;
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new = ff_dshow_enummediatypes_Create(type);
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if (!new)
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return E_OUTOFMEMORY;
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*enumtypes = (IEnumMediaTypes *) new;
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return S_OK;
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}
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long WINAPI ff_dshow_pin_QueryInternalConnections(DShowPin *this, IPin **pin,
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unsigned long *npin)
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{
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dshowdebug("ff_dshow_pin_QueryInternalConnections(%p)\n", this);
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return E_NOTIMPL;
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}
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long WINAPI ff_dshow_pin_EndOfStream(DShowPin *this)
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{
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dshowdebug("ff_dshow_pin_EndOfStream(%p)\n", this);
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/* I don't care. */
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return S_OK;
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}
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long WINAPI ff_dshow_pin_BeginFlush(DShowPin *this)
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{
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dshowdebug("ff_dshow_pin_BeginFlush(%p)\n", this);
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/* I don't care. */
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return S_OK;
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}
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long WINAPI ff_dshow_pin_EndFlush(DShowPin *this)
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{
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dshowdebug("ff_dshow_pin_EndFlush(%p)\n", this);
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/* I don't care. */
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return S_OK;
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}
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long WINAPI ff_dshow_pin_NewSegment(DShowPin *this, REFERENCE_TIME start, REFERENCE_TIME stop,
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double rate)
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{
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dshowdebug("ff_dshow_pin_NewSegment(%p)\n", this);
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/* I don't care. */
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return S_OK;
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}
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static int ff_dshow_pin_Setup(DShowPin *this, DShowFilter *filter)
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{
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IPinVtbl *vtbl = this->vtbl;
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IMemInputPinVtbl *imemvtbl;
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if (!filter)
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return 0;
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imemvtbl = av_malloc(sizeof(IMemInputPinVtbl));
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if (!imemvtbl)
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return 0;
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SETVTBL(imemvtbl, meminputpin, QueryInterface);
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SETVTBL(imemvtbl, meminputpin, AddRef);
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SETVTBL(imemvtbl, meminputpin, Release);
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SETVTBL(imemvtbl, meminputpin, GetAllocator);
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SETVTBL(imemvtbl, meminputpin, NotifyAllocator);
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SETVTBL(imemvtbl, meminputpin, GetAllocatorRequirements);
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SETVTBL(imemvtbl, meminputpin, Receive);
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SETVTBL(imemvtbl, meminputpin, ReceiveMultiple);
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SETVTBL(imemvtbl, meminputpin, ReceiveCanBlock);
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this->imemvtbl = imemvtbl;
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SETVTBL(vtbl, pin, QueryInterface);
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SETVTBL(vtbl, pin, AddRef);
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SETVTBL(vtbl, pin, Release);
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SETVTBL(vtbl, pin, Connect);
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SETVTBL(vtbl, pin, ReceiveConnection);
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SETVTBL(vtbl, pin, Disconnect);
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SETVTBL(vtbl, pin, ConnectedTo);
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SETVTBL(vtbl, pin, ConnectionMediaType);
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SETVTBL(vtbl, pin, QueryPinInfo);
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SETVTBL(vtbl, pin, QueryDirection);
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SETVTBL(vtbl, pin, QueryId);
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SETVTBL(vtbl, pin, QueryAccept);
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SETVTBL(vtbl, pin, EnumMediaTypes);
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SETVTBL(vtbl, pin, QueryInternalConnections);
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SETVTBL(vtbl, pin, EndOfStream);
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SETVTBL(vtbl, pin, BeginFlush);
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SETVTBL(vtbl, pin, EndFlush);
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SETVTBL(vtbl, pin, NewSegment);
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this->filter = filter;
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return 1;
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}
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static void ff_dshow_pin_Free(DShowPin *this)
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{
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if (!this)
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return;
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av_freep(&this->imemvtbl);
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if (this->type.pbFormat) {
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CoTaskMemFree(this->type.pbFormat);
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this->type.pbFormat = NULL;
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}
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}
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DECLARE_CREATE(pin, DShowPin, ff_dshow_pin_Setup(this, filter), DShowFilter *filter)
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DECLARE_DESTROY(pin, DShowPin, ff_dshow_pin_Free)
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/*****************************************************************************
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* DShowMemInputPin
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****************************************************************************/
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long WINAPI ff_dshow_meminputpin_QueryInterface(DShowMemInputPin *this, const GUID *riid,
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void **ppvObject)
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{
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DShowPin *pin = (DShowPin *) ((uint8_t *) this - imemoffset);
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dshowdebug("ff_dshow_meminputpin_QueryInterface(%p)\n", this);
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return ff_dshow_pin_QueryInterface(pin, riid, ppvObject);
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}
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unsigned long WINAPI ff_dshow_meminputpin_AddRef(DShowMemInputPin *this)
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{
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DShowPin *pin = (DShowPin *) ((uint8_t *) this - imemoffset);
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dshowdebug("ff_dshow_meminputpin_AddRef(%p)\n", this);
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return ff_dshow_pin_AddRef(pin);
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}
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unsigned long WINAPI ff_dshow_meminputpin_Release(DShowMemInputPin *this)
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{
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DShowPin *pin = (DShowPin *) ((uint8_t *) this - imemoffset);
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dshowdebug("ff_dshow_meminputpin_Release(%p)\n", this);
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return ff_dshow_pin_Release(pin);
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}
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long WINAPI ff_dshow_meminputpin_GetAllocator(DShowMemInputPin *this, IMemAllocator **alloc)
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{
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dshowdebug("ff_dshow_meminputpin_GetAllocator(%p)\n", this);
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return VFW_E_NO_ALLOCATOR;
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}
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long WINAPI ff_dshow_meminputpin_NotifyAllocator(DShowMemInputPin *this, IMemAllocator *alloc,
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BOOL rdwr)
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{
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dshowdebug("ff_dshow_meminputpin_NotifyAllocator(%p)\n", this);
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return S_OK;
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}
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long WINAPI ff_dshow_meminputpin_GetAllocatorRequirements(DShowMemInputPin *this,
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ALLOCATOR_PROPERTIES *props)
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{
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dshowdebug("ff_dshow_meminputpin_GetAllocatorRequirements(%p)\n", this);
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return E_NOTIMPL;
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}
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long WINAPI ff_dshow_meminputpin_Receive(DShowMemInputPin *this, IMediaSample *sample)
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{
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DShowPin *pin = (DShowPin *) ((uint8_t *) this - imemoffset);
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enum dshowDeviceType devtype = pin->filter->type;
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void *priv_data;
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AVFormatContext *s;
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uint8_t *buf;
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int buf_size; /* todo should be a long? */
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int index;
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int64_t chosentime = 0;
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int64_t sampletime = 0;
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int64_t graphtime = 0;
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int use_sample_time = 1;
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const char *devtypename = (devtype == VideoDevice) ? "video" : "audio";
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IReferenceClock *clock = pin->filter->clock;
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int64_t dummy;
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struct dshow_ctx *ctx;
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HRESULT hr;
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dshowdebug("ff_dshow_meminputpin_Receive(%p)\n", this);
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if (!sample)
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return E_POINTER;
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priv_data = pin->filter->priv_data;
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s = priv_data;
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ctx = s->priv_data;
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hr = IMediaSample_GetTime(sample, &sampletime, &dummy);
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IReferenceClock_GetTime(clock, &graphtime);
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if (devtype == VideoDevice && !ctx->use_video_device_timestamps) {
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/* PTS from video devices is unreliable. */
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chosentime = graphtime;
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use_sample_time = 0;
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} else {
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if (hr == VFW_E_SAMPLE_TIME_NOT_SET || sampletime == 0) {
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chosentime = graphtime;
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use_sample_time = 0;
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av_log(s, AV_LOG_DEBUG,
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"frame with missing sample timestamp encountered, falling back to graph timestamp\n");
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}
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else if (sampletime > 400000000000000000LL) {
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/* initial frames sometimes start < 0 (shown as a very large number here,
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like 437650244077016960 which FFmpeg doesn't like).
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TODO figure out math. For now just drop them. */
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av_log(s, AV_LOG_DEBUG,
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"dropping initial (or ending) sample with odd PTS too high %"PRId64"\n", sampletime);
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return S_OK;
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} else
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chosentime = sampletime;
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}
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// media sample time is relative to graph start time
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sampletime += pin->filter->start_time;
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if (use_sample_time)
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chosentime += pin->filter->start_time;
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buf_size = IMediaSample_GetActualDataLength(sample);
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IMediaSample_GetPointer(sample, &buf);
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index = pin->filter->stream_index;
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av_log(s, AV_LOG_VERBOSE, "passing through packet of type %s size %8d "
|
|
|
|
"timestamp %"PRId64" orig timestamp %"PRId64" graph timestamp %"PRId64" diff %"PRId64" %s\n",
|
|
|
|
devtypename, buf_size, chosentime, sampletime, graphtime, graphtime - sampletime, ctx->device_name[devtype]);
|
|
|
|
pin->filter->callback(priv_data, index, buf, buf_size, chosentime, devtype);
|
|
|
|
|
|
|
|
return S_OK;
|
|
|
|
}
|
|
|
|
long WINAPI ff_dshow_meminputpin_ReceiveMultiple(DShowMemInputPin *this,
|
|
|
|
IMediaSample **samples, long n, long *nproc)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
dshowdebug("ff_dshow_meminputpin_ReceiveMultiple(%p)\n", this);
|
|
|
|
|
|
|
|
for (i = 0; i < n; i++)
|
|
|
|
ff_dshow_meminputpin_Receive(this, samples[i]);
|
|
|
|
|
|
|
|
*nproc = n;
|
|
|
|
return S_OK;
|
|
|
|
}
|
|
|
|
long WINAPI ff_dshow_meminputpin_ReceiveCanBlock(DShowMemInputPin *this)
|
|
|
|
{
|
|
|
|
dshowdebug("ff_dshow_meminputpin_ReceiveCanBlock(%p)\n", this);
|
|
|
|
/* I swear I will not block. */
|
|
|
|
return S_FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
void ff_dshow_meminputpin_Destroy(DShowMemInputPin *this)
|
|
|
|
{
|
|
|
|
DShowPin *pin = (DShowPin *) ((uint8_t *) this - imemoffset);
|
|
|
|
dshowdebug("ff_dshow_meminputpin_Destroy(%p)\n", this);
|
|
|
|
ff_dshow_pin_Destroy(pin);
|
|
|
|
}
|