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