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