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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. #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 */