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FFmpeg/libavdevice/dshow_capture.h

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  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 */