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 #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 */