Imported Debian version 2.5.2~trusty
[deb_ffmpeg.git] / ffmpeg / libavdevice / dshow_enumpins.c
CommitLineData
2ba45a60
DM
1/*
2 * DirectShow capture interface
3 * Copyright (c) 2010 Ramiro Polla
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include "dshow_capture.h"
23
24DECLARE_QUERYINTERFACE(libAVEnumPins,
25 { {&IID_IUnknown,0}, {&IID_IEnumPins,0} })
26DECLARE_ADDREF(libAVEnumPins)
27DECLARE_RELEASE(libAVEnumPins)
28
29long WINAPI
30libAVEnumPins_Next(libAVEnumPins *this, unsigned long n, IPin **pins,
31 unsigned long *fetched)
32{
33 int count = 0;
34 dshowdebug("libAVEnumPins_Next(%p)\n", this);
35 if (!pins)
36 return E_POINTER;
37 if (!this->pos && n == 1) {
38 libAVPin_AddRef(this->pin);
39 *pins = (IPin *) this->pin;
40 count = 1;
41 this->pos = 1;
42 }
43 if (fetched)
44 *fetched = count;
45 if (!count)
46 return S_FALSE;
47 return S_OK;
48}
49long WINAPI
50libAVEnumPins_Skip(libAVEnumPins *this, unsigned long n)
51{
52 dshowdebug("libAVEnumPins_Skip(%p)\n", this);
53 if (n) /* Any skip will always fall outside of the only valid pin. */
54 return S_FALSE;
55 return S_OK;
56}
57long WINAPI
58libAVEnumPins_Reset(libAVEnumPins *this)
59{
60 dshowdebug("libAVEnumPins_Reset(%p)\n", this);
61 this->pos = 0;
62 return S_OK;
63}
64long WINAPI
65libAVEnumPins_Clone(libAVEnumPins *this, libAVEnumPins **pins)
66{
67 libAVEnumPins *new;
68 dshowdebug("libAVEnumPins_Clone(%p)\n", this);
69 if (!pins)
70 return E_POINTER;
71 new = libAVEnumPins_Create(this->pin, this->filter);
72 if (!new)
73 return E_OUTOFMEMORY;
74 new->pos = this->pos;
75 *pins = new;
76 return S_OK;
77}
78
79static int
80libAVEnumPins_Setup(libAVEnumPins *this, libAVPin *pin, libAVFilter *filter)
81{
82 IEnumPinsVtbl *vtbl = this->vtbl;
83 SETVTBL(vtbl, libAVEnumPins, QueryInterface);
84 SETVTBL(vtbl, libAVEnumPins, AddRef);
85 SETVTBL(vtbl, libAVEnumPins, Release);
86 SETVTBL(vtbl, libAVEnumPins, Next);
87 SETVTBL(vtbl, libAVEnumPins, Skip);
88 SETVTBL(vtbl, libAVEnumPins, Reset);
89 SETVTBL(vtbl, libAVEnumPins, Clone);
90
91 this->pin = pin;
92 this->filter = filter;
93 libAVFilter_AddRef(this->filter);
94
95 return 1;
96}
97static int
98libAVEnumPins_Cleanup(libAVEnumPins *this)
99{
100 libAVFilter_Release(this->filter);
101 return 1;
102}
103DECLARE_CREATE(libAVEnumPins, libAVEnumPins_Setup(this, pin, filter),
104 libAVPin *pin, libAVFilter *filter)
105DECLARE_DESTROY(libAVEnumPins, libAVEnumPins_Cleanup)