git.sesse.net Git - ffmpeg/blob - libavdevice/dshow_capture.h

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