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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(libAVEnumMediaTypes, | |
25 | { {&IID_IUnknown,0}, {&IID_IEnumMediaTypes,0} }) | |
26 | DECLARE_ADDREF(libAVEnumMediaTypes) | |
27 | DECLARE_RELEASE(libAVEnumMediaTypes) | |
28 | ||
29 | long WINAPI | |
30 | libAVEnumMediaTypes_Next(libAVEnumMediaTypes *this, unsigned long n, | |
31 | AM_MEDIA_TYPE **types, unsigned long *fetched) | |
32 | { | |
33 | int count = 0; | |
34 | dshowdebug("libAVEnumMediaTypes_Next(%p)\n", this); | |
35 | if (!types) | |
36 | return E_POINTER; | |
37 | if (!this->pos && n == 1) { | |
38 | if (!IsEqualGUID(&this->type.majortype, &GUID_NULL)) { | |
39 | AM_MEDIA_TYPE *type = av_malloc(sizeof(AM_MEDIA_TYPE)); | |
40 | ff_copy_dshow_media_type(type, &this->type); | |
41 | *types = type; | |
42 | count = 1; | |
43 | } | |
44 | this->pos = 1; | |
45 | } | |
46 | if (fetched) | |
47 | *fetched = count; | |
48 | if (!count) | |
49 | return S_FALSE; | |
50 | return S_OK; | |
51 | } | |
52 | long WINAPI | |
53 | libAVEnumMediaTypes_Skip(libAVEnumMediaTypes *this, unsigned long n) | |
54 | { | |
55 | dshowdebug("libAVEnumMediaTypes_Skip(%p)\n", this); | |
56 | if (n) /* Any skip will always fall outside of the only valid type. */ | |
57 | return S_FALSE; | |
58 | return S_OK; | |
59 | } | |
60 | long WINAPI | |
61 | libAVEnumMediaTypes_Reset(libAVEnumMediaTypes *this) | |
62 | { | |
63 | dshowdebug("libAVEnumMediaTypes_Reset(%p)\n", this); | |
64 | this->pos = 0; | |
65 | return S_OK; | |
66 | } | |
67 | long WINAPI | |
68 | libAVEnumMediaTypes_Clone(libAVEnumMediaTypes *this, libAVEnumMediaTypes **enums) | |
69 | { | |
70 | libAVEnumMediaTypes *new; | |
71 | dshowdebug("libAVEnumMediaTypes_Clone(%p)\n", this); | |
72 | if (!enums) | |
73 | return E_POINTER; | |
74 | new = libAVEnumMediaTypes_Create(&this->type); | |
75 | if (!new) | |
76 | return E_OUTOFMEMORY; | |
77 | new->pos = this->pos; | |
78 | *enums = new; | |
79 | return S_OK; | |
80 | } | |
81 | ||
82 | static int | |
83 | libAVEnumMediaTypes_Setup(libAVEnumMediaTypes *this, const AM_MEDIA_TYPE *type) | |
84 | { | |
85 | IEnumMediaTypesVtbl *vtbl = this->vtbl; | |
86 | SETVTBL(vtbl, libAVEnumMediaTypes, QueryInterface); | |
87 | SETVTBL(vtbl, libAVEnumMediaTypes, AddRef); | |
88 | SETVTBL(vtbl, libAVEnumMediaTypes, Release); | |
89 | SETVTBL(vtbl, libAVEnumMediaTypes, Next); | |
90 | SETVTBL(vtbl, libAVEnumMediaTypes, Skip); | |
91 | SETVTBL(vtbl, libAVEnumMediaTypes, Reset); | |
92 | SETVTBL(vtbl, libAVEnumMediaTypes, Clone); | |
93 | ||
94 | if (!type) { | |
95 | this->type.majortype = GUID_NULL; | |
96 | } else { | |
97 | ff_copy_dshow_media_type(&this->type, type); | |
98 | } | |
99 | ||
100 | return 1; | |
101 | } | |
102 | DECLARE_CREATE(libAVEnumMediaTypes, libAVEnumMediaTypes_Setup(this, type), const AM_MEDIA_TYPE *type) | |
103 | DECLARE_DESTROY(libAVEnumMediaTypes, nothing) |