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(filter, DShowFilter,
25 { {&IID_IUnknown,0}, {&IID_IBaseFilter,0} })
DECLARE_ADDREF(filter,DShowFilter)26 DECLARE_ADDREF(filter, DShowFilter)
27 DECLARE_RELEASE(filter, DShowFilter)
28
29 long ff_dshow_filter_GetClassID(DShowFilter *this, CLSID *id)
30 {
31 dshowdebug("ff_dshow_filter_GetClassID(%p)\n", this);
32 /* I'm not creating a ClassID just for this. */
33 return E_FAIL;
34 }
ff_dshow_filter_Stop(DShowFilter * this)35 long ff_dshow_filter_Stop(DShowFilter *this)
36 {
37 dshowdebug("ff_dshow_filter_Stop(%p)\n", this);
38 this->state = State_Stopped;
39 return S_OK;
40 }
ff_dshow_filter_Pause(DShowFilter * this)41 long ff_dshow_filter_Pause(DShowFilter *this)
42 {
43 dshowdebug("ff_dshow_filter_Pause(%p)\n", this);
44 this->state = State_Paused;
45 return S_OK;
46 }
ff_dshow_filter_Run(DShowFilter * this,REFERENCE_TIME start)47 long ff_dshow_filter_Run(DShowFilter *this, REFERENCE_TIME start)
48 {
49 dshowdebug("ff_dshow_filter_Run(%p) %"PRId64"\n", this, start);
50 this->state = State_Running;
51 this->start_time = start;
52 return S_OK;
53 }
ff_dshow_filter_GetState(DShowFilter * this,DWORD ms,FILTER_STATE * state)54 long ff_dshow_filter_GetState(DShowFilter *this, DWORD ms, FILTER_STATE *state)
55 {
56 dshowdebug("ff_dshow_filter_GetState(%p)\n", this);
57 if (!state)
58 return E_POINTER;
59 *state = this->state;
60 return S_OK;
61 }
ff_dshow_filter_SetSyncSource(DShowFilter * this,IReferenceClock * clock)62 long ff_dshow_filter_SetSyncSource(DShowFilter *this, IReferenceClock *clock)
63 {
64 dshowdebug("ff_dshow_filter_SetSyncSource(%p)\n", this);
65
66 if (this->clock != clock) {
67 if (this->clock)
68 IReferenceClock_Release(this->clock);
69 this->clock = clock;
70 if (clock)
71 IReferenceClock_AddRef(clock);
72 }
73
74 return S_OK;
75 }
ff_dshow_filter_GetSyncSource(DShowFilter * this,IReferenceClock ** clock)76 long ff_dshow_filter_GetSyncSource(DShowFilter *this, IReferenceClock **clock)
77 {
78 dshowdebug("ff_dshow_filter_GetSyncSource(%p)\n", this);
79
80 if (!clock)
81 return E_POINTER;
82 if (this->clock)
83 IReferenceClock_AddRef(this->clock);
84 *clock = this->clock;
85
86 return S_OK;
87 }
ff_dshow_filter_EnumPins(DShowFilter * this,IEnumPins ** enumpin)88 long ff_dshow_filter_EnumPins(DShowFilter *this, IEnumPins **enumpin)
89 {
90 DShowEnumPins *new;
91 dshowdebug("ff_dshow_filter_EnumPins(%p)\n", this);
92
93 if (!enumpin)
94 return E_POINTER;
95 new = ff_dshow_enumpins_Create(this->pin, this);
96 if (!new)
97 return E_OUTOFMEMORY;
98
99 *enumpin = (IEnumPins *) new;
100 return S_OK;
101 }
ff_dshow_filter_FindPin(DShowFilter * this,const wchar_t * id,IPin ** pin)102 long ff_dshow_filter_FindPin(DShowFilter *this, const wchar_t *id, IPin **pin)
103 {
104 DShowPin *found = NULL;
105 dshowdebug("ff_dshow_filter_FindPin(%p)\n", this);
106
107 if (!id || !pin)
108 return E_POINTER;
109 if (!wcscmp(id, L"In")) {
110 found = this->pin;
111 ff_dshow_pin_AddRef(found);
112 }
113 *pin = (IPin *) found;
114 if (!found)
115 return VFW_E_NOT_FOUND;
116
117 return S_OK;
118 }
ff_dshow_filter_QueryFilterInfo(DShowFilter * this,FILTER_INFO * info)119 long ff_dshow_filter_QueryFilterInfo(DShowFilter *this, FILTER_INFO *info)
120 {
121 dshowdebug("ff_dshow_filter_QueryFilterInfo(%p)\n", this);
122
123 if (!info)
124 return E_POINTER;
125 if (this->info.pGraph)
126 IFilterGraph_AddRef(this->info.pGraph);
127 *info = this->info;
128
129 return S_OK;
130 }
ff_dshow_filter_JoinFilterGraph(DShowFilter * this,IFilterGraph * graph,const wchar_t * name)131 long ff_dshow_filter_JoinFilterGraph(DShowFilter *this, IFilterGraph *graph,
132 const wchar_t *name)
133 {
134 dshowdebug("ff_dshow_filter_JoinFilterGraph(%p)\n", this);
135
136 this->info.pGraph = graph;
137 if (name)
138 wcscpy(this->info.achName, name);
139
140 return S_OK;
141 }
ff_dshow_filter_QueryVendorInfo(DShowFilter * this,wchar_t ** info)142 long ff_dshow_filter_QueryVendorInfo(DShowFilter *this, wchar_t **info)
143 {
144 dshowdebug("ff_dshow_filter_QueryVendorInfo(%p)\n", this);
145
146 if (!info)
147 return E_POINTER;
148 return E_NOTIMPL; /* don't have to do anything here */
149 }
150
151 static int
ff_dshow_filter_Setup(DShowFilter * this,void * priv_data,void * callback,enum dshowDeviceType type)152 ff_dshow_filter_Setup(DShowFilter *this, void *priv_data, void *callback,
153 enum dshowDeviceType type)
154 {
155 IBaseFilterVtbl *vtbl = this->vtbl;
156 SETVTBL(vtbl, filter, QueryInterface);
157 SETVTBL(vtbl, filter, AddRef);
158 SETVTBL(vtbl, filter, Release);
159 SETVTBL(vtbl, filter, GetClassID);
160 SETVTBL(vtbl, filter, Stop);
161 SETVTBL(vtbl, filter, Pause);
162 SETVTBL(vtbl, filter, Run);
163 SETVTBL(vtbl, filter, GetState);
164 SETVTBL(vtbl, filter, SetSyncSource);
165 SETVTBL(vtbl, filter, GetSyncSource);
166 SETVTBL(vtbl, filter, EnumPins);
167 SETVTBL(vtbl, filter, FindPin);
168 SETVTBL(vtbl, filter, QueryFilterInfo);
169 SETVTBL(vtbl, filter, JoinFilterGraph);
170 SETVTBL(vtbl, filter, QueryVendorInfo);
171
172 this->pin = ff_dshow_pin_Create(this);
173
174 this->priv_data = priv_data;
175 this->callback = callback;
176 this->type = type;
177
178 return 1;
179 }
ff_dshow_filter_Cleanup(DShowFilter * this)180 static int ff_dshow_filter_Cleanup(DShowFilter *this)
181 {
182 ff_dshow_pin_Release(this->pin);
183 return 1;
184 }
185 DECLARE_CREATE(filter, DShowFilter, ff_dshow_filter_Setup(this, priv_data, callback, type),
186 void *priv_data, void *callback, enum dshowDeviceType type)
187 DECLARE_DESTROY(filter, DShowFilter, ff_dshow_filter_Cleanup)
188