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FFmpeg/libavdevice/dshow.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. #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_VIDEO_STREAM_CONFIG_CAPS(const VIDEO_STREAM_CONFIG_CAPS *caps);

  33. void ff_print_AUDIO_STREAM_CONFIG_CAPS(const AUDIO_STREAM_CONFIG_CAPS *caps);

  34. void ff_print_AM_MEDIA_TYPE(const AM_MEDIA_TYPE *type);

  35. void ff_printGUID(const GUID *g);

  36. 

  37. #if DSHOWDEBUG

  38. extern const AVClass *ff_dshow_context_class_ptr;

  39. #define dshowdebug(...) av_log(&ff_dshow_context_class_ptr, AV_LOG_DEBUG, __VA_ARGS__)

  40. #else

  41. #define dshowdebug(...)

  42. #endif

  43. 

  44. static inline void nothing(void *foo)

  45. {

  46. }

  47. 

  48. struct GUIDoffset {

  49.     const GUID *iid;

  50.     int offset;

  51. };

  52. 

  53. enum dshowDeviceType {

  54.     VideoDevice = 0,

  55.     AudioDevice = 1,

  56. };

  57. 

  58. #define DECLARE_QUERYINTERFACE(class, ...)                                   \

  59. long WINAPI                                                                  \

  60. class##_QueryInterface(class *this, const GUID *riid, void **ppvObject)      \

  61. {                                                                            \

  62.     struct GUIDoffset ifaces[] = __VA_ARGS__;                                \

  63.     int i;                                                                   \

  64.     dshowdebug(AV_STRINGIFY(class)"_QueryInterface(%p, %p, %p)\n", this, riid, ppvObject); \

  65.     ff_printGUID(riid);                                                      \

  66.     if (!ppvObject)                                                          \

  67.         return E_POINTER;                                                    \

  68.     for (i = 0; i < sizeof(ifaces)/sizeof(ifaces[0]); i++) {                 \

  69.         if (IsEqualGUID(riid, ifaces[i].iid)) {                              \

  70.             void *obj = (void *) ((uint8_t *) this + ifaces[i].offset);      \

  71.             class##_AddRef(this);                                            \

  72.             dshowdebug("\tfound %d with offset %d\n", i, ifaces[i].offset);  \

  73.             *ppvObject = (void *) obj;                                       \

  74.             return S_OK;                                                     \

  75.         }                                                                    \

  76.     }                                                                        \

  77.     dshowdebug("\tE_NOINTERFACE\n");                                         \

  78.     *ppvObject = NULL;                                                       \

  79.     return E_NOINTERFACE;                                                    \

  80. }

  81. #define DECLARE_ADDREF(class)                                                \

  82. unsigned long WINAPI                                                         \

  83. class##_AddRef(class *this)                                                  \

  84. {                                                                            \

  85.     dshowdebug(AV_STRINGIFY(class)"_AddRef(%p)\t%ld\n", this, this->ref+1);  \

  86.     return InterlockedIncrement(&this->ref);                                 \

  87. }

  88. #define DECLARE_RELEASE(class)                                               \

  89. unsigned long WINAPI                                                         \

  90. class##_Release(class *this)                                                 \

  91. {                                                                            \

  92.     long ref = InterlockedDecrement(&this->ref);                             \

  93.     dshowdebug(AV_STRINGIFY(class)"_Release(%p)\t%ld\n", this, ref);         \

  94.     if (!ref)                                                                \

  95.         class##_Destroy(this);                                               \

  96.     return ref;                                                              \

  97. }

  98. 

  99. #define DECLARE_DESTROY(class, func)                                         \

  100. void class##_Destroy(class *this)                                            \

  101. {                                                                            \

  102.     dshowdebug(AV_STRINGIFY(class)"_Destroy(%p)\n", this);                   \

  103.     func(this);                                                              \

  104.     if (this) {                                                              \

  105.         if (this->vtbl)                                                      \

  106.             CoTaskMemFree(this->vtbl);                                       \

  107.         CoTaskMemFree(this);                                                 \

  108.     }                                                                        \

  109. }

  110. #define DECLARE_CREATE(class, setup, ...)                                    \

  111. class *class##_Create(__VA_ARGS__)                                           \

  112. {                                                                            \

  113.     class *this = CoTaskMemAlloc(sizeof(class));                             \

  114.     void  *vtbl = CoTaskMemAlloc(sizeof(*this->vtbl));                       \

  115.     dshowdebug(AV_STRINGIFY(class)"_Create(%p)\n", this);                    \

  116.     if (!this || !vtbl)                                                      \

  117.         goto fail;                                                           \

  118.     ZeroMemory(this, sizeof(class));                                         \

  119.     ZeroMemory(vtbl, sizeof(*this->vtbl));                                   \

  120.     this->ref  = 1;                                                          \

  121.     this->vtbl = vtbl;                                                       \

  122.     if (!setup)                                                              \

  123.         goto fail;                                                           \

  124.     dshowdebug("created "AV_STRINGIFY(class)" %p\n", this);                  \

  125.     return this;                                                             \

  126. fail:                                                                        \

  127.     class##_Destroy(this);                                                   \

  128.     dshowdebug("could not create "AV_STRINGIFY(class)"\n");                  \

  129.     return NULL;                                                             \

  130. }

  131. 

  132. #define SETVTBL(vtbl, class, fn) \

  133.     do { (vtbl)->fn = (void *) class##_##fn; } while(0)

  134. 

  135. /*****************************************************************************

  136.  * Forward Declarations

  137.  ****************************************************************************/

  138. typedef struct libAVPin libAVPin;

  139. typedef struct libAVMemInputPin libAVMemInputPin;

  140. typedef struct libAVEnumPins libAVEnumPins;

  141. typedef struct libAVEnumMediaTypes libAVEnumMediaTypes;

  142. typedef struct libAVFilter libAVFilter;

  143. 

  144. /*****************************************************************************

  145.  * libAVPin

  146.  ****************************************************************************/

  147. struct libAVPin {

  148.     IPinVtbl *vtbl;

  149.     long ref;

  150.     libAVFilter *filter;

  151.     IPin *connectedto;

  152.     AM_MEDIA_TYPE type;

  153.     IMemInputPinVtbl *imemvtbl;

  154. };

  155. 

  156. long          WINAPI libAVPin_QueryInterface          (libAVPin *, const GUID *, void **);

  157. unsigned long WINAPI libAVPin_AddRef                  (libAVPin *);

  158. unsigned long WINAPI libAVPin_Release                 (libAVPin *);

  159. long          WINAPI libAVPin_Connect                 (libAVPin *, IPin *, const AM_MEDIA_TYPE *);

  160. long          WINAPI libAVPin_ReceiveConnection       (libAVPin *, IPin *, const AM_MEDIA_TYPE *);

  161. long          WINAPI libAVPin_Disconnect              (libAVPin *);

  162. long          WINAPI libAVPin_ConnectedTo             (libAVPin *, IPin **);

  163. long          WINAPI libAVPin_ConnectionMediaType     (libAVPin *, AM_MEDIA_TYPE *);

  164. long          WINAPI libAVPin_QueryPinInfo            (libAVPin *, PIN_INFO *);

  165. long          WINAPI libAVPin_QueryDirection          (libAVPin *, PIN_DIRECTION *);

  166. long          WINAPI libAVPin_QueryId                 (libAVPin *, wchar_t **);

  167. long          WINAPI libAVPin_QueryAccept             (libAVPin *, const AM_MEDIA_TYPE *);

  168. long          WINAPI libAVPin_EnumMediaTypes          (libAVPin *, IEnumMediaTypes **);

  169. long          WINAPI libAVPin_QueryInternalConnections(libAVPin *, IPin **, unsigned long *);

  170. long          WINAPI libAVPin_EndOfStream             (libAVPin *);

  171. long          WINAPI libAVPin_BeginFlush              (libAVPin *);

  172. long          WINAPI libAVPin_EndFlush                (libAVPin *);

  173. long          WINAPI libAVPin_NewSegment              (libAVPin *, REFERENCE_TIME, REFERENCE_TIME, double);

  174. 

  175. long          WINAPI libAVMemInputPin_QueryInterface          (libAVMemInputPin *, const GUID *, void **);

  176. unsigned long WINAPI libAVMemInputPin_AddRef                  (libAVMemInputPin *);

  177. unsigned long WINAPI libAVMemInputPin_Release                 (libAVMemInputPin *);

  178. long          WINAPI libAVMemInputPin_GetAllocator            (libAVMemInputPin *, IMemAllocator **);

  179. long          WINAPI libAVMemInputPin_NotifyAllocator         (libAVMemInputPin *, IMemAllocator *, WINBOOL);

  180. long          WINAPI libAVMemInputPin_GetAllocatorRequirements(libAVMemInputPin *, ALLOCATOR_PROPERTIES *);

  181. long          WINAPI libAVMemInputPin_Receive                 (libAVMemInputPin *, IMediaSample *);

  182. long          WINAPI libAVMemInputPin_ReceiveMultiple         (libAVMemInputPin *, IMediaSample **, long, long *);

  183. long          WINAPI libAVMemInputPin_ReceiveCanBlock         (libAVMemInputPin *);

  184. 

  185. void                 libAVPin_Destroy(libAVPin *);

  186. libAVPin            *libAVPin_Create (libAVFilter *filter);

  187. 

  188. void                 libAVMemInputPin_Destroy(libAVMemInputPin *);

  189. 

  190. /*****************************************************************************

  191.  * libAVEnumPins

  192.  ****************************************************************************/

  193. struct libAVEnumPins {

  194.     IEnumPinsVtbl *vtbl;

  195.     long ref;

  196.     int pos;

  197.     libAVPin *pin;

  198.     libAVFilter *filter;

  199. };

  200. 

  201. long          WINAPI libAVEnumPins_QueryInterface(libAVEnumPins *, const GUID *, void **);

  202. unsigned long WINAPI libAVEnumPins_AddRef        (libAVEnumPins *);

  203. unsigned long WINAPI libAVEnumPins_Release       (libAVEnumPins *);

  204. long          WINAPI libAVEnumPins_Next          (libAVEnumPins *, unsigned long, IPin **, unsigned long *);

  205. long          WINAPI libAVEnumPins_Skip          (libAVEnumPins *, unsigned long);

  206. long          WINAPI libAVEnumPins_Reset         (libAVEnumPins *);

  207. long          WINAPI libAVEnumPins_Clone         (libAVEnumPins *, libAVEnumPins **);

  208. 

  209. void                 libAVEnumPins_Destroy(libAVEnumPins *);

  210. libAVEnumPins       *libAVEnumPins_Create (libAVPin *pin, libAVFilter *filter);

  211. 

  212. /*****************************************************************************

  213.  * libAVEnumMediaTypes

  214.  ****************************************************************************/

  215. struct libAVEnumMediaTypes {

  216.     IEnumPinsVtbl *vtbl;

  217.     long ref;

  218.     int pos;

  219.     AM_MEDIA_TYPE type;

  220. };

  221. 

  222. long          WINAPI libAVEnumMediaTypes_QueryInterface(libAVEnumMediaTypes *, const GUID *, void **);

  223. unsigned long WINAPI libAVEnumMediaTypes_AddRef        (libAVEnumMediaTypes *);

  224. unsigned long WINAPI libAVEnumMediaTypes_Release       (libAVEnumMediaTypes *);

  225. long          WINAPI libAVEnumMediaTypes_Next          (libAVEnumMediaTypes *, unsigned long, AM_MEDIA_TYPE **, unsigned long *);

  226. long          WINAPI libAVEnumMediaTypes_Skip          (libAVEnumMediaTypes *, unsigned long);

  227. long          WINAPI libAVEnumMediaTypes_Reset         (libAVEnumMediaTypes *);

  228. long          WINAPI libAVEnumMediaTypes_Clone         (libAVEnumMediaTypes *, libAVEnumMediaTypes **);

  229. 

  230. void                 libAVEnumMediaTypes_Destroy(libAVEnumMediaTypes *);

  231. libAVEnumMediaTypes *libAVEnumMediaTypes_Create(const AM_MEDIA_TYPE *type);

  232. 

  233. /*****************************************************************************

  234.  * libAVFilter

  235.  ****************************************************************************/

  236. struct libAVFilter {

  237.     IBaseFilterVtbl *vtbl;

  238.     long ref;

  239.     const wchar_t *name;

  240.     libAVPin *pin;

  241.     FILTER_INFO info;

  242.     FILTER_STATE state;

  243.     IReferenceClock *clock;

  244.     enum dshowDeviceType type;

  245.     void *priv_data;

  246.     int stream_index;

  247.     int64_t start_time;

  248.     void (*callback)(void *priv_data, int index, uint8_t *buf, int buf_size, int64_t time);

  249. };

  250. 

  251. long          WINAPI libAVFilter_QueryInterface (libAVFilter *, const GUID *, void **);

  252. unsigned long WINAPI libAVFilter_AddRef         (libAVFilter *);

  253. unsigned long WINAPI libAVFilter_Release        (libAVFilter *);

  254. long          WINAPI libAVFilter_GetClassID     (libAVFilter *, CLSID *);

  255. long          WINAPI libAVFilter_Stop           (libAVFilter *);

  256. long          WINAPI libAVFilter_Pause          (libAVFilter *);

  257. long          WINAPI libAVFilter_Run            (libAVFilter *, REFERENCE_TIME);

  258. long          WINAPI libAVFilter_GetState       (libAVFilter *, DWORD, FILTER_STATE *);

  259. long          WINAPI libAVFilter_SetSyncSource  (libAVFilter *, IReferenceClock *);

  260. long          WINAPI libAVFilter_GetSyncSource  (libAVFilter *, IReferenceClock **);

  261. long          WINAPI libAVFilter_EnumPins       (libAVFilter *, IEnumPins **);

  262. long          WINAPI libAVFilter_FindPin        (libAVFilter *, const wchar_t *, IPin **);

  263. long          WINAPI libAVFilter_QueryFilterInfo(libAVFilter *, FILTER_INFO *);

  264. long          WINAPI libAVFilter_JoinFilterGraph(libAVFilter *, IFilterGraph *, const wchar_t *);

  265. long          WINAPI libAVFilter_QueryVendorInfo(libAVFilter *, wchar_t **);

  266. 

  267. void                 libAVFilter_Destroy(libAVFilter *);

  268. libAVFilter         *libAVFilter_Create (void *, void *, enum dshowDeviceType);