| 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 | #ifndef AVDEVICE_DSHOW_H |
| 23 | #define AVDEVICE_DSHOW_H |
| 24 | |
| 25 | #define DSHOWDEBUG 0 |
| 26 | |
| 27 | #include "avdevice.h" |
| 28 | |
| 29 | #define COBJMACROS |
| 30 | #define WIN32_LEAN_AND_MEAN |
| 31 | #include <windows.h> |
| 32 | #define NO_DSHOW_STRSAFE |
| 33 | #include <dshow.h> |
| 34 | #include <dvdmedia.h> |
| 35 | |
| 36 | /* EC_DEVICE_LOST is not defined in MinGW dshow headers. */ |
| 37 | #ifndef EC_DEVICE_LOST |
| 38 | #define EC_DEVICE_LOST 0x1f |
| 39 | #endif |
| 40 | |
| 41 | long ff_copy_dshow_media_type(AM_MEDIA_TYPE *dst, const AM_MEDIA_TYPE *src); |
| 42 | void ff_print_VIDEO_STREAM_CONFIG_CAPS(const VIDEO_STREAM_CONFIG_CAPS *caps); |
| 43 | void ff_print_AUDIO_STREAM_CONFIG_CAPS(const AUDIO_STREAM_CONFIG_CAPS *caps); |
| 44 | void ff_print_AM_MEDIA_TYPE(const AM_MEDIA_TYPE *type); |
| 45 | void ff_printGUID(const GUID *g); |
| 46 | |
| 47 | #if DSHOWDEBUG |
| 48 | extern const AVClass *ff_dshow_context_class_ptr; |
| 49 | #define dshowdebug(...) av_log(&ff_dshow_context_class_ptr, AV_LOG_DEBUG, __VA_ARGS__) |
| 50 | #else |
| 51 | #define dshowdebug(...) |
| 52 | #endif |
| 53 | |
| 54 | static inline void nothing(void *foo) |
| 55 | { |
| 56 | } |
| 57 | |
| 58 | struct GUIDoffset { |
| 59 | const GUID *iid; |
| 60 | int offset; |
| 61 | }; |
| 62 | |
| 63 | enum dshowDeviceType { |
| 64 | VideoDevice = 0, |
| 65 | AudioDevice = 1, |
| 66 | }; |
| 67 | |
| 68 | #define DECLARE_QUERYINTERFACE(class, ...) \ |
| 69 | long WINAPI \ |
| 70 | class##_QueryInterface(class *this, const GUID *riid, void **ppvObject) \ |
| 71 | { \ |
| 72 | struct GUIDoffset ifaces[] = __VA_ARGS__; \ |
| 73 | int i; \ |
| 74 | dshowdebug(AV_STRINGIFY(class)"_QueryInterface(%p, %p, %p)\n", this, riid, ppvObject); \ |
| 75 | ff_printGUID(riid); \ |
| 76 | if (!ppvObject) \ |
| 77 | return E_POINTER; \ |
| 78 | for (i = 0; i < sizeof(ifaces)/sizeof(ifaces[0]); i++) { \ |
| 79 | if (IsEqualGUID(riid, ifaces[i].iid)) { \ |
| 80 | void *obj = (void *) ((uint8_t *) this + ifaces[i].offset); \ |
| 81 | class##_AddRef(this); \ |
| 82 | dshowdebug("\tfound %d with offset %d\n", i, ifaces[i].offset); \ |
| 83 | *ppvObject = (void *) obj; \ |
| 84 | return S_OK; \ |
| 85 | } \ |
| 86 | } \ |
| 87 | dshowdebug("\tE_NOINTERFACE\n"); \ |
| 88 | *ppvObject = NULL; \ |
| 89 | return E_NOINTERFACE; \ |
| 90 | } |
| 91 | #define DECLARE_ADDREF(class) \ |
| 92 | unsigned long WINAPI \ |
| 93 | class##_AddRef(class *this) \ |
| 94 | { \ |
| 95 | dshowdebug(AV_STRINGIFY(class)"_AddRef(%p)\t%ld\n", this, this->ref+1); \ |
| 96 | return InterlockedIncrement(&this->ref); \ |
| 97 | } |
| 98 | #define DECLARE_RELEASE(class) \ |
| 99 | unsigned long WINAPI \ |
| 100 | class##_Release(class *this) \ |
| 101 | { \ |
| 102 | long ref = InterlockedDecrement(&this->ref); \ |
| 103 | dshowdebug(AV_STRINGIFY(class)"_Release(%p)\t%ld\n", this, ref); \ |
| 104 | if (!ref) \ |
| 105 | class##_Destroy(this); \ |
| 106 | return ref; \ |
| 107 | } |
| 108 | |
| 109 | #define DECLARE_DESTROY(class, func) \ |
| 110 | void class##_Destroy(class *this) \ |
| 111 | { \ |
| 112 | dshowdebug(AV_STRINGIFY(class)"_Destroy(%p)\n", this); \ |
| 113 | func(this); \ |
| 114 | if (this) { \ |
| 115 | if (this->vtbl) \ |
| 116 | CoTaskMemFree(this->vtbl); \ |
| 117 | CoTaskMemFree(this); \ |
| 118 | } \ |
| 119 | } |
| 120 | #define DECLARE_CREATE(class, setup, ...) \ |
| 121 | class *class##_Create(__VA_ARGS__) \ |
| 122 | { \ |
| 123 | class *this = CoTaskMemAlloc(sizeof(class)); \ |
| 124 | void *vtbl = CoTaskMemAlloc(sizeof(*this->vtbl)); \ |
| 125 | dshowdebug(AV_STRINGIFY(class)"_Create(%p)\n", this); \ |
| 126 | if (!this || !vtbl) \ |
| 127 | goto fail; \ |
| 128 | ZeroMemory(this, sizeof(class)); \ |
| 129 | ZeroMemory(vtbl, sizeof(*this->vtbl)); \ |
| 130 | this->ref = 1; \ |
| 131 | this->vtbl = vtbl; \ |
| 132 | if (!setup) \ |
| 133 | goto fail; \ |
| 134 | dshowdebug("created "AV_STRINGIFY(class)" %p\n", this); \ |
| 135 | return this; \ |
| 136 | fail: \ |
| 137 | class##_Destroy(this); \ |
| 138 | dshowdebug("could not create "AV_STRINGIFY(class)"\n"); \ |
| 139 | return NULL; \ |
| 140 | } |
| 141 | |
| 142 | #define SETVTBL(vtbl, class, fn) \ |
| 143 | do { (vtbl)->fn = (void *) class##_##fn; } while(0) |
| 144 | |
| 145 | /***************************************************************************** |
| 146 | * Forward Declarations |
| 147 | ****************************************************************************/ |
| 148 | typedef struct libAVPin libAVPin; |
| 149 | typedef struct libAVMemInputPin libAVMemInputPin; |
| 150 | typedef struct libAVEnumPins libAVEnumPins; |
| 151 | typedef struct libAVEnumMediaTypes libAVEnumMediaTypes; |
| 152 | typedef struct libAVFilter libAVFilter; |
| 153 | |
| 154 | /***************************************************************************** |
| 155 | * libAVPin |
| 156 | ****************************************************************************/ |
| 157 | struct libAVPin { |
| 158 | IPinVtbl *vtbl; |
| 159 | long ref; |
| 160 | libAVFilter *filter; |
| 161 | IPin *connectedto; |
| 162 | AM_MEDIA_TYPE type; |
| 163 | IMemInputPinVtbl *imemvtbl; |
| 164 | }; |
| 165 | |
| 166 | long WINAPI libAVPin_QueryInterface (libAVPin *, const GUID *, void **); |
| 167 | unsigned long WINAPI libAVPin_AddRef (libAVPin *); |
| 168 | unsigned long WINAPI libAVPin_Release (libAVPin *); |
| 169 | long WINAPI libAVPin_Connect (libAVPin *, IPin *, const AM_MEDIA_TYPE *); |
| 170 | long WINAPI libAVPin_ReceiveConnection (libAVPin *, IPin *, const AM_MEDIA_TYPE *); |
| 171 | long WINAPI libAVPin_Disconnect (libAVPin *); |
| 172 | long WINAPI libAVPin_ConnectedTo (libAVPin *, IPin **); |
| 173 | long WINAPI libAVPin_ConnectionMediaType (libAVPin *, AM_MEDIA_TYPE *); |
| 174 | long WINAPI libAVPin_QueryPinInfo (libAVPin *, PIN_INFO *); |
| 175 | long WINAPI libAVPin_QueryDirection (libAVPin *, PIN_DIRECTION *); |
| 176 | long WINAPI libAVPin_QueryId (libAVPin *, wchar_t **); |
| 177 | long WINAPI libAVPin_QueryAccept (libAVPin *, const AM_MEDIA_TYPE *); |
| 178 | long WINAPI libAVPin_EnumMediaTypes (libAVPin *, IEnumMediaTypes **); |
| 179 | long WINAPI libAVPin_QueryInternalConnections(libAVPin *, IPin **, unsigned long *); |
| 180 | long WINAPI libAVPin_EndOfStream (libAVPin *); |
| 181 | long WINAPI libAVPin_BeginFlush (libAVPin *); |
| 182 | long WINAPI libAVPin_EndFlush (libAVPin *); |
| 183 | long WINAPI libAVPin_NewSegment (libAVPin *, REFERENCE_TIME, REFERENCE_TIME, double); |
| 184 | |
| 185 | long WINAPI libAVMemInputPin_QueryInterface (libAVMemInputPin *, const GUID *, void **); |
| 186 | unsigned long WINAPI libAVMemInputPin_AddRef (libAVMemInputPin *); |
| 187 | unsigned long WINAPI libAVMemInputPin_Release (libAVMemInputPin *); |
| 188 | long WINAPI libAVMemInputPin_GetAllocator (libAVMemInputPin *, IMemAllocator **); |
| 189 | long WINAPI libAVMemInputPin_NotifyAllocator (libAVMemInputPin *, IMemAllocator *, BOOL); |
| 190 | long WINAPI libAVMemInputPin_GetAllocatorRequirements(libAVMemInputPin *, ALLOCATOR_PROPERTIES *); |
| 191 | long WINAPI libAVMemInputPin_Receive (libAVMemInputPin *, IMediaSample *); |
| 192 | long WINAPI libAVMemInputPin_ReceiveMultiple (libAVMemInputPin *, IMediaSample **, long, long *); |
| 193 | long WINAPI libAVMemInputPin_ReceiveCanBlock (libAVMemInputPin *); |
| 194 | |
| 195 | void libAVPin_Destroy(libAVPin *); |
| 196 | libAVPin *libAVPin_Create (libAVFilter *filter); |
| 197 | |
| 198 | void libAVMemInputPin_Destroy(libAVMemInputPin *); |
| 199 | |
| 200 | /***************************************************************************** |
| 201 | * libAVEnumPins |
| 202 | ****************************************************************************/ |
| 203 | struct libAVEnumPins { |
| 204 | IEnumPinsVtbl *vtbl; |
| 205 | long ref; |
| 206 | int pos; |
| 207 | libAVPin *pin; |
| 208 | libAVFilter *filter; |
| 209 | }; |
| 210 | |
| 211 | long WINAPI libAVEnumPins_QueryInterface(libAVEnumPins *, const GUID *, void **); |
| 212 | unsigned long WINAPI libAVEnumPins_AddRef (libAVEnumPins *); |
| 213 | unsigned long WINAPI libAVEnumPins_Release (libAVEnumPins *); |
| 214 | long WINAPI libAVEnumPins_Next (libAVEnumPins *, unsigned long, IPin **, unsigned long *); |
| 215 | long WINAPI libAVEnumPins_Skip (libAVEnumPins *, unsigned long); |
| 216 | long WINAPI libAVEnumPins_Reset (libAVEnumPins *); |
| 217 | long WINAPI libAVEnumPins_Clone (libAVEnumPins *, libAVEnumPins **); |
| 218 | |
| 219 | void libAVEnumPins_Destroy(libAVEnumPins *); |
| 220 | libAVEnumPins *libAVEnumPins_Create (libAVPin *pin, libAVFilter *filter); |
| 221 | |
| 222 | /***************************************************************************** |
| 223 | * libAVEnumMediaTypes |
| 224 | ****************************************************************************/ |
| 225 | struct libAVEnumMediaTypes { |
| 226 | IEnumPinsVtbl *vtbl; |
| 227 | long ref; |
| 228 | int pos; |
| 229 | AM_MEDIA_TYPE type; |
| 230 | }; |
| 231 | |
| 232 | long WINAPI libAVEnumMediaTypes_QueryInterface(libAVEnumMediaTypes *, const GUID *, void **); |
| 233 | unsigned long WINAPI libAVEnumMediaTypes_AddRef (libAVEnumMediaTypes *); |
| 234 | unsigned long WINAPI libAVEnumMediaTypes_Release (libAVEnumMediaTypes *); |
| 235 | long WINAPI libAVEnumMediaTypes_Next (libAVEnumMediaTypes *, unsigned long, AM_MEDIA_TYPE **, unsigned long *); |
| 236 | long WINAPI libAVEnumMediaTypes_Skip (libAVEnumMediaTypes *, unsigned long); |
| 237 | long WINAPI libAVEnumMediaTypes_Reset (libAVEnumMediaTypes *); |
| 238 | long WINAPI libAVEnumMediaTypes_Clone (libAVEnumMediaTypes *, libAVEnumMediaTypes **); |
| 239 | |
| 240 | void libAVEnumMediaTypes_Destroy(libAVEnumMediaTypes *); |
| 241 | libAVEnumMediaTypes *libAVEnumMediaTypes_Create(const AM_MEDIA_TYPE *type); |
| 242 | |
| 243 | /***************************************************************************** |
| 244 | * libAVFilter |
| 245 | ****************************************************************************/ |
| 246 | struct libAVFilter { |
| 247 | IBaseFilterVtbl *vtbl; |
| 248 | long ref; |
| 249 | const wchar_t *name; |
| 250 | libAVPin *pin; |
| 251 | FILTER_INFO info; |
| 252 | FILTER_STATE state; |
| 253 | IReferenceClock *clock; |
| 254 | enum dshowDeviceType type; |
| 255 | void *priv_data; |
| 256 | int stream_index; |
| 257 | int64_t start_time; |
| 258 | void (*callback)(void *priv_data, int index, uint8_t *buf, int buf_size, int64_t time, enum dshowDeviceType type); |
| 259 | }; |
| 260 | |
| 261 | long WINAPI libAVFilter_QueryInterface (libAVFilter *, const GUID *, void **); |
| 262 | unsigned long WINAPI libAVFilter_AddRef (libAVFilter *); |
| 263 | unsigned long WINAPI libAVFilter_Release (libAVFilter *); |
| 264 | long WINAPI libAVFilter_GetClassID (libAVFilter *, CLSID *); |
| 265 | long WINAPI libAVFilter_Stop (libAVFilter *); |
| 266 | long WINAPI libAVFilter_Pause (libAVFilter *); |
| 267 | long WINAPI libAVFilter_Run (libAVFilter *, REFERENCE_TIME); |
| 268 | long WINAPI libAVFilter_GetState (libAVFilter *, DWORD, FILTER_STATE *); |
| 269 | long WINAPI libAVFilter_SetSyncSource (libAVFilter *, IReferenceClock *); |
| 270 | long WINAPI libAVFilter_GetSyncSource (libAVFilter *, IReferenceClock **); |
| 271 | long WINAPI libAVFilter_EnumPins (libAVFilter *, IEnumPins **); |
| 272 | long WINAPI libAVFilter_FindPin (libAVFilter *, const wchar_t *, IPin **); |
| 273 | long WINAPI libAVFilter_QueryFilterInfo(libAVFilter *, FILTER_INFO *); |
| 274 | long WINAPI libAVFilter_JoinFilterGraph(libAVFilter *, IFilterGraph *, const wchar_t *); |
| 275 | long WINAPI libAVFilter_QueryVendorInfo(libAVFilter *, wchar_t **); |
| 276 | |
| 277 | void libAVFilter_Destroy(libAVFilter *); |
| 278 | libAVFilter *libAVFilter_Create (void *, void *, enum dshowDeviceType); |
| 279 | |
| 280 | #endif /* AVDEVICE_DSHOW_H */ |