blob: e5c11cb54e3dbd3d31c6e024f5226b4b7db2a957
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 | |
24 | DECLARE_QUERYINTERFACE(libAVEnumPins, |
25 | { {&IID_IUnknown,0}, {&IID_IEnumPins,0} }) |
26 | DECLARE_ADDREF(libAVEnumPins) |
27 | DECLARE_RELEASE(libAVEnumPins) |
28 | |
29 | long WINAPI |
30 | libAVEnumPins_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 | } |
49 | long WINAPI |
50 | libAVEnumPins_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 | } |
57 | long WINAPI |
58 | libAVEnumPins_Reset(libAVEnumPins *this) |
59 | { |
60 | dshowdebug("libAVEnumPins_Reset(%p)\n", this); |
61 | this->pos = 0; |
62 | return S_OK; |
63 | } |
64 | long WINAPI |
65 | libAVEnumPins_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 | |
79 | static int |
80 | libAVEnumPins_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 | } |
97 | static int |
98 | libAVEnumPins_Cleanup(libAVEnumPins *this) |
99 | { |
100 | libAVFilter_Release(this->filter); |
101 | return 1; |
102 | } |
103 | DECLARE_CREATE(libAVEnumPins, libAVEnumPins_Setup(this, pin, filter), |
104 | libAVPin *pin, libAVFilter *filter) |
105 | DECLARE_DESTROY(libAVEnumPins, libAVEnumPins_Cleanup) |
106 |