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| /* | |
| * DirectShow capture interface | |
| * Copyright (c) 2010 Ramiro Polla | |
| * | |
| * This file is part of FFmpeg. | |
| * | |
| * FFmpeg is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU Lesser General Public | |
| * License as published by the Free Software Foundation; either | |
| * version 2.1 of the License, or (at your option) any later version. | |
| * | |
| * FFmpeg is distributed in the hope that it will be useful, | |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| * Lesser General Public License for more details. | |
| * | |
| * You should have received a copy of the GNU Lesser General Public | |
| * License along with FFmpeg; if not, write to the Free Software | |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| */ | |
| DECLARE_QUERYINTERFACE(enumpins, DShowEnumPins, | |
| { {&IID_IUnknown,0}, {&IID_IEnumPins,0} }) | |
| DECLARE_ADDREF(enumpins, DShowEnumPins) | |
| DECLARE_RELEASE(enumpins, DShowEnumPins) | |
| long WINAPI ff_dshow_enumpins_Next(DShowEnumPins *this, unsigned long n, IPin **pins, | |
| unsigned long *fetched) | |
| { | |
| int count = 0; | |
| dshowdebug("ff_dshow_enumpins_Next(%p)\n", this); | |
| if (!pins) | |
| return E_POINTER; | |
| if (!this->pos && n == 1) { | |
| ff_dshow_pin_AddRef(this->pin); | |
| *pins = (IPin *) this->pin; | |
| count = 1; | |
| this->pos = 1; | |
| } | |
| if (fetched) | |
| *fetched = count; | |
| if (!count) | |
| return S_FALSE; | |
| return S_OK; | |
| } | |
| long WINAPI ff_dshow_enumpins_Skip(DShowEnumPins *this, unsigned long n) | |
| { | |
| dshowdebug("ff_dshow_enumpins_Skip(%p)\n", this); | |
| if (n) /* Any skip will always fall outside of the only valid pin. */ | |
| return S_FALSE; | |
| return S_OK; | |
| } | |
| long WINAPI ff_dshow_enumpins_Reset(DShowEnumPins *this) | |
| { | |
| dshowdebug("ff_dshow_enumpins_Reset(%p)\n", this); | |
| this->pos = 0; | |
| return S_OK; | |
| } | |
| long WINAPI ff_dshow_enumpins_Clone(DShowEnumPins *this, DShowEnumPins **pins) | |
| { | |
| DShowEnumPins *new; | |
| dshowdebug("ff_dshow_enumpins_Clone(%p)\n", this); | |
| if (!pins) | |
| return E_POINTER; | |
| new = ff_dshow_enumpins_Create(this->pin, this->filter); | |
| if (!new) | |
| return E_OUTOFMEMORY; | |
| new->pos = this->pos; | |
| *pins = new; | |
| return S_OK; | |
| } | |
| static int ff_dshow_enumpins_Setup(DShowEnumPins *this, DShowPin *pin, DShowFilter *filter) | |
| { | |
| IEnumPinsVtbl *vtbl = this->vtbl; | |
| SETVTBL(vtbl, enumpins, QueryInterface); | |
| SETVTBL(vtbl, enumpins, AddRef); | |
| SETVTBL(vtbl, enumpins, Release); | |
| SETVTBL(vtbl, enumpins, Next); | |
| SETVTBL(vtbl, enumpins, Skip); | |
| SETVTBL(vtbl, enumpins, Reset); | |
| SETVTBL(vtbl, enumpins, Clone); | |
| this->pin = pin; | |
| this->filter = filter; | |
| ff_dshow_filter_AddRef(this->filter); | |
| return 1; | |
| } | |
| static int ff_dshow_enumpins_Cleanup(DShowEnumPins *this) | |
| { | |
| ff_dshow_filter_Release(this->filter); | |
| return 1; | |
| } | |
| DECLARE_CREATE(enumpins, DShowEnumPins, ff_dshow_enumpins_Setup(this, pin, filter), | |
| DShowPin *pin, DShowFilter *filter) | |
| DECLARE_DESTROY(enumpins, DShowEnumPins, ff_dshow_enumpins_Cleanup) | |