| /* |
| * 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 |
| */ |
| |
| #include "dshow_capture.h" |
| |
| DECLARE_QUERYINTERFACE(enumpins, DShowEnumPins, |
| { {&IID_IUnknown,0}, {&IID_IEnumPins,0} }) |
| DECLARE_ADDREF(enumpins, DShowEnumPins) |
| DECLARE_RELEASE(enumpins, DShowEnumPins) |
| |
| long 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 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 ff_dshow_enumpins_Reset(DShowEnumPins *this) |
| { |
| dshowdebug("ff_dshow_enumpins_Reset(%p)\n", this); |
| this->pos = 0; |
| return S_OK; |
| } |
| long 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) |