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