blob: 3a66a4de1412183f9e3d5a862a34f95240c17872
| 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 | if (!type) |
| 41 | return E_OUTOFMEMORY; |
| 42 | ff_copy_dshow_media_type(type, &this->type); |
| 43 | *types = type; |
| 44 | count = 1; |
| 45 | } |
| 46 | this->pos = 1; |
| 47 | } |
| 48 | if (fetched) |
| 49 | *fetched = count; |
| 50 | if (!count) |
| 51 | return S_FALSE; |
| 52 | return S_OK; |
| 53 | } |
| 54 | long WINAPI |
| 55 | libAVEnumMediaTypes_Skip(libAVEnumMediaTypes *this, unsigned long n) |
| 56 | { |
| 57 | dshowdebug("libAVEnumMediaTypes_Skip(%p)\n", this); |
| 58 | if (n) /* Any skip will always fall outside of the only valid type. */ |
| 59 | return S_FALSE; |
| 60 | return S_OK; |
| 61 | } |
| 62 | long WINAPI |
| 63 | libAVEnumMediaTypes_Reset(libAVEnumMediaTypes *this) |
| 64 | { |
| 65 | dshowdebug("libAVEnumMediaTypes_Reset(%p)\n", this); |
| 66 | this->pos = 0; |
| 67 | return S_OK; |
| 68 | } |
| 69 | long WINAPI |
| 70 | libAVEnumMediaTypes_Clone(libAVEnumMediaTypes *this, libAVEnumMediaTypes **enums) |
| 71 | { |
| 72 | libAVEnumMediaTypes *new; |
| 73 | dshowdebug("libAVEnumMediaTypes_Clone(%p)\n", this); |
| 74 | if (!enums) |
| 75 | return E_POINTER; |
| 76 | new = libAVEnumMediaTypes_Create(&this->type); |
| 77 | if (!new) |
| 78 | return E_OUTOFMEMORY; |
| 79 | new->pos = this->pos; |
| 80 | *enums = new; |
| 81 | return S_OK; |
| 82 | } |
| 83 | |
| 84 | static int |
| 85 | libAVEnumMediaTypes_Setup(libAVEnumMediaTypes *this, const AM_MEDIA_TYPE *type) |
| 86 | { |
| 87 | IEnumMediaTypesVtbl *vtbl = this->vtbl; |
| 88 | SETVTBL(vtbl, libAVEnumMediaTypes, QueryInterface); |
| 89 | SETVTBL(vtbl, libAVEnumMediaTypes, AddRef); |
| 90 | SETVTBL(vtbl, libAVEnumMediaTypes, Release); |
| 91 | SETVTBL(vtbl, libAVEnumMediaTypes, Next); |
| 92 | SETVTBL(vtbl, libAVEnumMediaTypes, Skip); |
| 93 | SETVTBL(vtbl, libAVEnumMediaTypes, Reset); |
| 94 | SETVTBL(vtbl, libAVEnumMediaTypes, Clone); |
| 95 | |
| 96 | if (!type) { |
| 97 | this->type.majortype = GUID_NULL; |
| 98 | } else { |
| 99 | ff_copy_dshow_media_type(&this->type, type); |
| 100 | } |
| 101 | |
| 102 | return 1; |
| 103 | } |
| 104 | DECLARE_CREATE(libAVEnumMediaTypes, libAVEnumMediaTypes_Setup(this, type), const AM_MEDIA_TYPE *type) |
| 105 | DECLARE_DESTROY(libAVEnumMediaTypes, nothing) |
| 106 |