mirror of
https://github.com/pion/mediadevices.git
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115 lines
2.3 KiB
C++
115 lines
2.3 KiB
C++
#pragma once
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct
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{
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int width;
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int height;
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uint32_t fcc;
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} imageProp;
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typedef struct
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{
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int width;
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int height;
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size_t buf; // uintptr
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char* name;
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int numProps;
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imageProp* props;
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void* grabber;
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void* mediaControl;
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void* callback;
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} camera;
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typedef struct
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{
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int num;
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char** name;
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} cameraList;
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int openCamera(camera* cam, const char** errstr);
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void freeCamera(camera* cam);
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int listResolution(camera* cam, const char** errstr);
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int listCamera(cameraList* list, const char** errstr);
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int freeCameraList(cameraList* list, const char** errstr);
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imageProp* getProp(camera* cam, int i);
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char* getName(cameraList* list, int i);
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#ifdef __cplusplus
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}
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#endif
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#ifdef __cplusplus
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#include <windows.h>
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#include <string>
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#include <dshow.h>
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std::string utf16Decode(LPOLESTR olestr);
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IPin* getPin(IBaseFilter* filter, PIN_DIRECTION dir);
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char* getCameraName(IMoniker* monier);
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template <class T>
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void safeRelease(T** p)
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{
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if (*p)
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{
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(*p)->Release();
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*p = nullptr;
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}
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}
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class SampleGrabberCallback : public ISampleGrabberCB
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{
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private:
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camera* cam_;
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public:
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inline SampleGrabberCallback(camera* cam)
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: cam_(cam)
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{
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}
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HRESULT SampleCB(double sampleTime, IMediaSample* sample) final;
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HRESULT BufferCB(double sampleTime, BYTE* buffer, LONG bufferLen) final;
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inline ULONG STDMETHODCALLTYPE AddRef() final
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{
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return 2;
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}
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inline ULONG STDMETHODCALLTYPE Release() final
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{
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return 1;
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}
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inline HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void** ppv) final
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{
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if (riid == IID_ISampleGrabberCB || riid == IID_IUnknown)
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{
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*ppv = (void*)static_cast<ISampleGrabberCB*>(this);
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return NOERROR;
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}
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return E_NOINTERFACE;
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}
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};
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EXTERN_C const CLSID CLSID_NullRenderer;
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EXTERN_C const CLSID CLSID_SampleGrabber;
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const static char* errAddFilter = "failed to add filter";
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const static char* errConnectFilters = "failed to connect filters";
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const static char* errEnumDevice = "failed to enum device";
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const static char* errGrabber = "failed to create grabber";
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const static char* errGraphBuilder = "failed to build graph";
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const static char* errNoControl = "failed to control media";
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const static char* errTerminator = "failed to create graph terminator";
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const static char* errGetConfig = "failed to get config";
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#endif
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