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opencv/modules/highgui/src/cap_dshow.cpp

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/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// Intel License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2000, Intel Corporation, all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of Intel Corporation may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//M*/
#include "precomp.hpp"
#if (defined WIN32 || defined _WIN32) && defined HAVE_VIDEOINPUT
/*
DirectShow-based Video Capturing module is based on
videoInput library by Theodore Watson:
http://muonics.net/school/spring05/videoInput/
Below is the original copyright
*/
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//THE SOFTWARE.
//////////////////////////////////////////////////////////
//Written by Theodore Watson - theo.watson@gmail.com //
//Do whatever you want with this code but if you find //
//a bug or make an improvement I would love to know! //
// //
//Warning This code is experimental //
//use at your own risk :) //
//////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////
/* Shoutouts
Thanks to:
Dillip Kumar Kara for crossbar code.
Zachary Lieberman for getting me into this stuff
and for being so generous with time and code.
The guys at Potion Design for helping me with VC++
Josh Fisher for being a serious C++ nerd :)
Golan Levin for helping me debug the strangest
and slowest bug in the world!
And all the people using this library who send in
bugs, suggestions and improvements who keep me working on
the next version - yeah thanks a lot ;)
*/
/////////////////////////////////////////////////////////
#include "precomp.hpp"
#if _MSC_VER >= 100
#pragma warning(disable: 4995)
#endif
#include <tchar.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <wchar.h>
#include <vector>
//Include Directshow stuff here so we don't worry about needing all the h files.
#if _MSC_VER >= 1500
#include "DShow.h"
#include "strmif.h"
#include "Aviriff.h"
#include "dvdmedia.h"
#include "bdaiface.h"
#else
#ifdef _MSC_VER
#define __extension__
typedef BOOL WINBOOL;
#endif
#include "dshow/dshow.h"
#include "dshow/dvdmedia.h"
#include "dshow/bdatypes.h"
interface IEnumPIDMap : public IUnknown
{
public:
virtual HRESULT STDMETHODCALLTYPE Next(
/* [in] */ ULONG cRequest,
/* [size_is][out][in] */ PID_MAP *pPIDMap,
/* [out] */ ULONG *pcReceived) = 0;
virtual HRESULT STDMETHODCALLTYPE Skip(
/* [in] */ ULONG cRecords) = 0;
virtual HRESULT STDMETHODCALLTYPE Reset( void) = 0;
virtual HRESULT STDMETHODCALLTYPE Clone(
/* [out] */ IEnumPIDMap **ppIEnumPIDMap) = 0;
};
interface IMPEG2PIDMap : public IUnknown
{
virtual HRESULT STDMETHODCALLTYPE MapPID(
/* [in] */ ULONG culPID,
/* [in] */ ULONG *pulPID,
/* [in] */ MEDIA_SAMPLE_CONTENT MediaSampleContent) = 0;
virtual HRESULT STDMETHODCALLTYPE UnmapPID(
/* [in] */ ULONG culPID,
/* [in] */ ULONG *pulPID) = 0;
virtual HRESULT STDMETHODCALLTYPE EnumPIDMap(
/* [out] */ IEnumPIDMap **pIEnumPIDMap) = 0;
};
#endif
//for threading
#include <process.h>
//this is for TryEnterCriticalSection
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x400
#endif
/*
MEDIASUBTYPE_I420 : TGUID ='{30323449-0000-0010-8000-00AA00389B71}';
MEDIASUBTYPE_Y800 : TGUID ='{30303859-0000-0010-8000-00AA00389B71}';
MEDIASUBTYPE_Y8 : TGUID ='{20203859-0000-0010-8000-00AA00389B71}';
MEDIASUBTYPE_Y160 : TGUID ='{30363159-0000-0010-8000-00AA00389B71}';
MEDIASUBTYPE_YV16 : TGUID ='{32315659-0000-0010-8000-00AA00389B71}';
MEDIASUBTYPE_Y422 : TGUID ='{32323459-0000-0010-8000-00AA00389B71}';
MEDIASUBTYPE_GREY : TGUID ='{59455247-0000-0010-8000-00AA00389B71}';
*/
#include <initguid.h>
DEFINE_GUID(MEDIASUBTYPE_GREY, 0x59455247, 0x0000, 0x0010, 0x80, 0x00,
0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
DEFINE_GUID(MEDIASUBTYPE_Y8, 0x20203859, 0x0000, 0x0010, 0x80, 0x00,
0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
DEFINE_GUID(MEDIASUBTYPE_Y800, 0x30303859, 0x0000, 0x0010, 0x80, 0x00,
0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
DEFINE_GUID(CLSID_CaptureGraphBuilder2,0xbf87b6e1,0x8c27,0x11d0,0xb3,0xf0,0x00,0xaa,0x00,0x37,0x61,0xc5);
DEFINE_GUID(CLSID_FilterGraph,0xe436ebb3,0x524f,0x11ce,0x9f,0x53,0x00,0x20,0xaf,0x0b,0xa7,0x70);
DEFINE_GUID(CLSID_NullRenderer,0xc1f400a4,0x3f08,0x11d3,0x9f,0x0b,0x00,0x60,0x08,0x03,0x9e,0x37);
DEFINE_GUID(CLSID_SampleGrabber,0xc1f400a0,0x3f08,0x11d3,0x9f,0x0b,0x00,0x60,0x08,0x03,0x9e,0x37);
DEFINE_GUID(CLSID_SystemDeviceEnum,0x62be5d10,0x60eb,0x11d0,0xbd,0x3b,0x00,0xa0,0xc9,0x11,0xce,0x86);
DEFINE_GUID(CLSID_VideoInputDeviceCategory,0x860bb310,0x5d01,0x11d0,0xbd,0x3b,0x00,0xa0,0xc9,0x11,0xce,0x86);
DEFINE_GUID(FORMAT_VideoInfo,0x05589f80,0xc356,0x11ce,0xbf,0x01,0x00,0xaa,0x00,0x55,0x59,0x5a);
DEFINE_GUID(IID_IAMAnalogVideoDecoder,0xc6e13350,0x30ac,0x11d0,0xa1,0x8c,0x00,0xa0,0xc9,0x11,0x89,0x56);
DEFINE_GUID(IID_IAMCameraControl,0xc6e13370,0x30ac,0x11d0,0xa1,0x8c,0x00,0xa0,0xc9,0x11,0x89,0x56);
DEFINE_GUID(IID_IAMCrossbar,0xc6e13380,0x30ac,0x11d0,0xa1,0x8c,0x00,0xa0,0xc9,0x11,0x89,0x56);
DEFINE_GUID(IID_IAMStreamConfig,0xc6e13340,0x30ac,0x11d0,0xa1,0x8c,0x00,0xa0,0xc9,0x11,0x89,0x56);
DEFINE_GUID(IID_IAMVideoProcAmp,0xc6e13360,0x30ac,0x11d0,0xa1,0x8c,0x00,0xa0,0xc9,0x11,0x89,0x56);
DEFINE_GUID(IID_IBaseFilter,0x56a86895,0x0ad4,0x11ce,0xb0,0x3a,0x00,0x20,0xaf,0x0b,0xa7,0x70);
DEFINE_GUID(IID_ICaptureGraphBuilder2,0x93e5a4e0,0x2d50,0x11d2,0xab,0xfa,0x00,0xa0,0xc9,0xc6,0xe3,0x8d);
DEFINE_GUID(IID_ICreateDevEnum,0x29840822,0x5b84,0x11d0,0xbd,0x3b,0x00,0xa0,0xc9,0x11,0xce,0x86);
DEFINE_GUID(IID_IGraphBuilder,0x56a868a9,0x0ad4,0x11ce,0xb0,0x3a,0x00,0x20,0xaf,0x0b,0xa7,0x70);
DEFINE_GUID(IID_IMPEG2PIDMap,0xafb6c2a1,0x2c41,0x11d3,0x8a,0x60,0x00,0x00,0xf8,0x1e,0x0e,0x4a);
DEFINE_GUID(IID_IMediaControl,0x56a868b1,0x0ad4,0x11ce,0xb0,0x3a,0x00,0x20,0xaf,0x0b,0xa7,0x70);
DEFINE_GUID(IID_IMediaFilter,0x56a86899,0x0ad4,0x11ce,0xb0,0x3a,0x00,0x20,0xaf,0x0b,0xa7,0x70);
DEFINE_GUID(IID_ISampleGrabber,0x6b652fff,0x11fe,0x4fce,0x92,0xad,0x02,0x66,0xb5,0xd7,0xc7,0x8f);
DEFINE_GUID(LOOK_UPSTREAM_ONLY,0xac798be0,0x98e3,0x11d1,0xb3,0xf1,0x00,0xaa,0x00,0x37,0x61,0xc5);
DEFINE_GUID(MEDIASUBTYPE_AYUV,0x56555941,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIASUBTYPE_IYUV,0x56555949,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIASUBTYPE_RGB24,0xe436eb7d,0x524f,0x11ce,0x9f,0x53,0x00,0x20,0xaf,0x0b,0xa7,0x70);
DEFINE_GUID(MEDIASUBTYPE_RGB32,0xe436eb7e,0x524f,0x11ce,0x9f,0x53,0x00,0x20,0xaf,0x0b,0xa7,0x70);
DEFINE_GUID(MEDIASUBTYPE_RGB555,0xe436eb7c,0x524f,0x11ce,0x9f,0x53,0x00,0x20,0xaf,0x0b,0xa7,0x70);
DEFINE_GUID(MEDIASUBTYPE_RGB565,0xe436eb7b,0x524f,0x11ce,0x9f,0x53,0x00,0x20,0xaf,0x0b,0xa7,0x70);
DEFINE_GUID(MEDIASUBTYPE_UYVY,0x59565955,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIASUBTYPE_Y211,0x31313259,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIASUBTYPE_Y411,0x31313459,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIASUBTYPE_Y41P,0x50313459,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIASUBTYPE_YUY2,0x32595559,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIASUBTYPE_YUYV,0x56595559,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIASUBTYPE_YV12,0x32315659,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIASUBTYPE_YVU9,0x39555659,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIASUBTYPE_YVYU,0x55595659,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIATYPE_Interleaved,0x73766169,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIATYPE_Video,0x73646976,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(PIN_CATEGORY_CAPTURE,0xfb6c4281,0x0353,0x11d1,0x90,0x5f,0x00,0x00,0xc0,0xcc,0x16,0xba);
DEFINE_GUID(PIN_CATEGORY_PREVIEW,0xfb6c4282,0x0353,0x11d1,0x90,0x5f,0x00,0x00,0xc0,0xcc,0x16,0xba);
interface ISampleGrabberCB : public IUnknown
{
virtual HRESULT STDMETHODCALLTYPE SampleCB(
double SampleTime,
IMediaSample *pSample) = 0;
virtual HRESULT STDMETHODCALLTYPE BufferCB(
double SampleTime,
BYTE *pBuffer,
LONG BufferLen) = 0;
};
interface ISampleGrabber : public IUnknown
{
virtual HRESULT STDMETHODCALLTYPE SetOneShot(
BOOL OneShot) = 0;
virtual HRESULT STDMETHODCALLTYPE SetMediaType(
const AM_MEDIA_TYPE *pType) = 0;
virtual HRESULT STDMETHODCALLTYPE GetConnectedMediaType(
AM_MEDIA_TYPE *pType) = 0;
virtual HRESULT STDMETHODCALLTYPE SetBufferSamples(
BOOL BufferThem) = 0;
virtual HRESULT STDMETHODCALLTYPE GetCurrentBuffer(
LONG *pBufferSize,
LONG *pBuffer) = 0;
virtual HRESULT STDMETHODCALLTYPE GetCurrentSample(
IMediaSample **ppSample) = 0;
virtual HRESULT STDMETHODCALLTYPE SetCallback(
ISampleGrabberCB *pCallback,
LONG WhichMethodToCallback) = 0;
};
#ifndef HEADER
#define HEADER(p) (&(((VIDEOINFOHEADER*)(p))->bmiHeader))
#endif
//Example Usage
/*
//create a videoInput object
videoInput VI;
//Prints out a list of available devices and returns num of devices found
int numDevices = VI.listDevices();
int device1 = 0; //this could be any deviceID that shows up in listDevices
int device2 = 1; //this could be any deviceID that shows up in listDevices
//if you want to capture at a different frame rate (default is 30)
//specify it here, you are not guaranteed to get this fps though.
//VI.setIdealFramerate(dev, 60);
//setup the first device - there are a number of options:
VI.setupDevice(device1); //setup the first device with the default settings
//VI.setupDevice(device1, VI_COMPOSITE); //or setup device with specific connection type
//VI.setupDevice(device1, 320, 240); //or setup device with specified video size
//VI.setupDevice(device1, 320, 240, VI_COMPOSITE); //or setup device with video size and connection type
//VI.setFormat(device1, VI_NTSC_M); //if your card doesn't remember what format it should be
//call this with the appropriate format listed above
//NOTE: must be called after setupDevice!
//optionally setup a second (or third, fourth ...) device - same options as above
VI.setupDevice(device2);
//As requested width and height can not always be accomodated
//make sure to check the size once the device is setup
int width = VI.getWidth(device1);
int height = VI.getHeight(device1);
int size = VI.getSize(device1);
unsigned char * yourBuffer1 = new unsigned char[size];
unsigned char * yourBuffer2 = new unsigned char[size];
//to get the data from the device first check if the data is new
if(VI.isFrameNew(device1)){
VI.getPixels(device1, yourBuffer1, false, false); //fills pixels as a BGR (for openCV) unsigned char array - no flipping
VI.getPixels(device1, yourBuffer2, true, true); //fills pixels as a RGB (for openGL) unsigned char array - flipping!
}
//same applies to device2 etc
//to get a settings dialog for the device
VI.showSettingsWindow(device1);
//Shut down devices properly
VI.stopDevice(device1);
VI.stopDevice(device2);
*/
////////////////////////////////////// VARS AND DEFS //////////////////////////////////
//STUFF YOU CAN CHANGE
//change for verbose debug info
static bool verbose = true;
//if you need VI to use multi threaded com
//#define VI_COM_MULTI_THREADED
//STUFF YOU DON'T CHANGE
//videoInput defines
#define VI_VERSION 0.1995
#define VI_MAX_CAMERAS 20
#define VI_NUM_TYPES 18 //DON'T TOUCH
#define VI_NUM_FORMATS 18 //DON'T TOUCH
//defines for setPhyCon - tuner is not as well supported as composite and s-video
#define VI_COMPOSITE 0
#define VI_S_VIDEO 1
#define VI_TUNER 2
#define VI_USB 3
#define VI_1394 4
//defines for formats
#define VI_NTSC_M 0
#define VI_PAL_B 1
#define VI_PAL_D 2
#define VI_PAL_G 3
#define VI_PAL_H 4
#define VI_PAL_I 5
#define VI_PAL_M 6
#define VI_PAL_N 7
#define VI_PAL_NC 8
#define VI_SECAM_B 9
#define VI_SECAM_D 10
#define VI_SECAM_G 11
#define VI_SECAM_H 12
#define VI_SECAM_K 13
#define VI_SECAM_K1 14
#define VI_SECAM_L 15
#define VI_NTSC_M_J 16
#define VI_NTSC_433 17
//allows us to directShow classes here with the includes in the cpp
struct ICaptureGraphBuilder2;
struct IGraphBuilder;
struct IBaseFilter;
struct IAMCrossbar;
struct IMediaControl;
struct ISampleGrabber;
struct IMediaEventEx;
struct IAMStreamConfig;
struct _AMMediaType;
class SampleGrabberCallback;
typedef _AMMediaType AM_MEDIA_TYPE;
//keeps track of how many instances of VI are being used
//don't touch
static int comInitCount = 0;
//////////////////////////////////////// VIDEO DEVICE ///////////////////////////////////
class videoDevice{
public:
videoDevice();
void setSize(int w, int h);
void NukeDownstream(IBaseFilter *pBF);
void destroyGraph();
~videoDevice();
int videoSize;
int width;
int height;
int tryWidth;
int tryHeight;
ICaptureGraphBuilder2 *pCaptureGraph; // Capture graph builder object
IGraphBuilder *pGraph; // Graph builder object
IMediaControl *pControl; // Media control object
IBaseFilter *pVideoInputFilter; // Video Capture filter
IBaseFilter *pGrabberF;
IBaseFilter * pDestFilter;
IAMStreamConfig *streamConf;
ISampleGrabber * pGrabber; // Grabs frame
AM_MEDIA_TYPE * pAmMediaType;
IMediaEventEx * pMediaEvent;
GUID videoType;
long formatType;
SampleGrabberCallback * sgCallback;
bool tryDiffSize;
bool useCrossbar;
bool readyToCapture;
bool sizeSet;
bool setupStarted;
bool specificFormat;
bool autoReconnect;
int nFramesForReconnect;
unsigned long nFramesRunning;
int connection;
int storeConn;
int myID;
long requestedFrameTime; //ie fps
char nDeviceName[255];
WCHAR wDeviceName[255];
unsigned char * pixels;
char * pBuffer;
};
////////////////////////////////////// VIDEO INPUT /////////////////////////////////////
class videoInput{
public:
videoInput();
~videoInput();
//turns off console messages - default is to print messages
static void setVerbose(bool _verbose);
//Functions in rough order they should be used.
static int listDevices(bool silent = false);
//needs to be called after listDevices - otherwise returns NULL
static char * getDeviceName(int deviceID);
//choose to use callback based capture - or single threaded
void setUseCallback(bool useCallback);
//call before setupDevice
//directshow will try and get the closest possible framerate to what is requested
void setIdealFramerate(int deviceID, int idealFramerate);
//some devices will stop delivering frames after a while - this method gives you the option to try and reconnect
//to a device if videoInput detects that a device has stopped delivering frames.
//you MUST CALL isFrameNew every app loop for this to have any effect
void setAutoReconnectOnFreeze(int deviceNumber, bool doReconnect, int numMissedFramesBeforeReconnect);
//Choose one of these four to setup your device
bool setupDevice(int deviceID);
bool setupDevice(int deviceID, int w, int h);
//These two are only for capture cards
//USB and Firewire cameras souldn't specify connection
bool setupDevice(int deviceID, int connection);
bool setupDevice(int deviceID, int w, int h, int connection);
//If you need to you can set your NTSC/PAL/SECAM
//preference here. if it is available it will be used.
//see #defines above for available formats - eg VI_NTSC_M or VI_PAL_B
//should be called after setupDevice
//can be called multiple times
bool setFormat(int deviceNumber, int format);
//Tells you when a new frame has arrived - you should call this if you have specified setAutoReconnectOnFreeze to true
bool isFrameNew(int deviceID);
bool isDeviceSetup(int deviceID);
//Returns the pixels - flipRedAndBlue toggles RGB/BGR flipping - and you can flip the image too
unsigned char * getPixels(int deviceID, bool flipRedAndBlue = true, bool flipImage = false);
//Or pass in a buffer for getPixels to fill returns true if successful.
bool getPixels(int id, unsigned char * pixels, bool flipRedAndBlue = true, bool flipImage = false);
//Launches a pop up settings window
//For some reason in GLUT you have to call it twice each time.
void showSettingsWindow(int deviceID);
//Manual control over settings thanks.....
//These are experimental for now.
bool setVideoSettingFilter(int deviceID, long Property, long lValue, long Flags = NULL, bool useDefaultValue = false);
bool setVideoSettingFilterPct(int deviceID, long Property, float pctValue, long Flags = NULL);
bool getVideoSettingFilter(int deviceID, long Property, long &min, long &max, long &SteppingDelta, long &currentValue, long &flags, long &defaultValue);
bool setVideoSettingCamera(int deviceID, long Property, long lValue, long Flags = NULL, bool useDefaultValue = false);
bool setVideoSettingCameraPct(int deviceID, long Property, float pctValue, long Flags = NULL);
bool getVideoSettingCamera(int deviceID, long Property, long &min, long &max, long &SteppingDelta, long &currentValue, long &flags, long &defaultValue);
//bool setVideoSettingCam(int deviceID, long Property, long lValue, long Flags = NULL, bool useDefaultValue = false);
//get width, height and number of pixels
int getWidth(int deviceID);
int getHeight(int deviceID);
int getSize(int deviceID);
//completely stops and frees a device
void stopDevice(int deviceID);
//as above but then sets it up with same settings
bool restartDevice(int deviceID);
//number of devices available
int devicesFound;
long propBrightness;
long propContrast;
long propHue;
long propSaturation;
long propSharpness;
long propGamma;
long propColorEnable;
long propWhiteBalance;
long propBacklightCompensation;
long propGain;
long propPan;
long propTilt;
long propRoll;
long propZoom;
long propExposure;
long propIris;
long propFocus;
private:
void setPhyCon(int deviceID, int conn);
void setAttemptCaptureSize(int deviceID, int w, int h);
bool setup(int deviceID);
void processPixels(unsigned char * src, unsigned char * dst, int width, int height, bool bRGB, bool bFlip);
int start(int deviceID, videoDevice * VD);
int getDeviceCount();
void getMediaSubtypeAsString(GUID type, char * typeAsString);
HRESULT getDevice(IBaseFilter **pSrcFilter, int deviceID, WCHAR * wDeviceName, char * nDeviceName);
static HRESULT ShowFilterPropertyPages(IBaseFilter *pFilter);
HRESULT SaveGraphFile(IGraphBuilder *pGraph, WCHAR *wszPath);
HRESULT routeCrossbar(ICaptureGraphBuilder2 **ppBuild, IBaseFilter **pVidInFilter, int conType, GUID captureMode);
//don't touch
static bool comInit();
static bool comUnInit();
int connection;
int callbackSetCount;
bool bCallback;
GUID CAPTURE_MODE;
//Extra video subtypes
GUID MEDIASUBTYPE_Y800;
GUID MEDIASUBTYPE_Y8;
GUID MEDIASUBTYPE_GREY;
videoDevice * VDList[VI_MAX_CAMERAS];
GUID mediaSubtypes[VI_NUM_TYPES];
long formatTypes[VI_NUM_FORMATS];
static void __cdecl basicThread(void * objPtr);
static char deviceNames[VI_MAX_CAMERAS][255];
};
/////////////////////////// HANDY FUNCTIONS /////////////////////////////
void MyFreeMediaType(AM_MEDIA_TYPE& mt){
if (mt.cbFormat != 0)
{
CoTaskMemFree((PVOID)mt.pbFormat);
mt.cbFormat = 0;
mt.pbFormat = NULL;
}
if (mt.pUnk != NULL)
{
// Unecessary because pUnk should not be used, but safest.
mt.pUnk->Release();
mt.pUnk = NULL;
}
}
void MyDeleteMediaType(AM_MEDIA_TYPE *pmt)
{
if (pmt != NULL)
{
MyFreeMediaType(*pmt);
CoTaskMemFree(pmt);
}
}
////////////////////////////// CALLBACK ////////////////////////////////
//Callback class
class SampleGrabberCallback : public ISampleGrabberCB{
public:
//------------------------------------------------
SampleGrabberCallback(){
InitializeCriticalSection(&critSection);
freezeCheck = 0;
bufferSetup = false;
newFrame = false;
latestBufferLength = 0;
hEvent = CreateEvent(NULL, true, false, NULL);
}
//------------------------------------------------
~SampleGrabberCallback(){
ptrBuffer = NULL;
DeleteCriticalSection(&critSection);
CloseHandle(hEvent);
if(bufferSetup){
delete pixels;
}
}
//------------------------------------------------
bool setupBuffer(int numBytesIn){
if(bufferSetup){
return false;
}else{
numBytes = numBytesIn;
pixels = new unsigned char[numBytes];
bufferSetup = true;
newFrame = false;
latestBufferLength = 0;
}
return true;
}
//------------------------------------------------
STDMETHODIMP_(ULONG) AddRef() { return 1; }
STDMETHODIMP_(ULONG) Release() { return 2; }
//------------------------------------------------
STDMETHODIMP QueryInterface(REFIID, void **ppvObject){
*ppvObject = static_cast<ISampleGrabberCB*>(this);
return S_OK;
}
//This method is meant to have less overhead
//------------------------------------------------
STDMETHODIMP SampleCB(double, IMediaSample *pSample){
if(WaitForSingleObject(hEvent, 0) == WAIT_OBJECT_0) return S_OK;
HRESULT hr = pSample->GetPointer(&ptrBuffer);
if(hr == S_OK){
latestBufferLength = pSample->GetActualDataLength();
if(latestBufferLength == numBytes){
EnterCriticalSection(&critSection);
memcpy(pixels, ptrBuffer, latestBufferLength);
newFrame = true;
freezeCheck = 1;
LeaveCriticalSection(&critSection);
SetEvent(hEvent);
}else{
printf("ERROR: SampleCB() - buffer sizes do not match\n");
}
}
return S_OK;
}
//This method is meant to have more overhead
STDMETHODIMP BufferCB(double, BYTE *, long){
return E_NOTIMPL;
}
int freezeCheck;
int latestBufferLength;
int numBytes;
bool newFrame;
bool bufferSetup;
unsigned char * pixels;
unsigned char * ptrBuffer;
CRITICAL_SECTION critSection;
HANDLE hEvent;
};
////////////////////////////// VIDEO DEVICE ////////////////////////////////
// ----------------------------------------------------------------------
// Should this class also be the callback?
//
// ----------------------------------------------------------------------
videoDevice::videoDevice(){
pCaptureGraph = NULL; // Capture graph builder object
pGraph = NULL; // Graph builder object
pControl = NULL; // Media control object
pVideoInputFilter = NULL; // Video Capture filter
pGrabber = NULL; // Grabs frame
pDestFilter = NULL; // Null Renderer Filter
pGrabberF = NULL; // Grabber Filter
pMediaEvent = NULL;
streamConf = NULL;
pAmMediaType = NULL;
//This is our callback class that processes the frame.
sgCallback = new SampleGrabberCallback();
sgCallback->newFrame = false;
//Default values for capture type
videoType = MEDIASUBTYPE_RGB24;
connection = PhysConn_Video_Composite;
storeConn = 0;
videoSize = 0;
width = 0;
height = 0;
tryWidth = 0;
tryHeight = 0;
nFramesForReconnect= 10000;
nFramesRunning = 0;
myID = -1;
tryDiffSize = false;
useCrossbar = false;
readyToCapture = false;
sizeSet = false;
setupStarted = false;
specificFormat = false;
autoReconnect = false;
requestedFrameTime = -1;
memset(wDeviceName, 0, sizeof(WCHAR) * 255);
memset(nDeviceName, 0, sizeof(char) * 255);
}
// ----------------------------------------------------------------------
// The only place we are doing new
//
// ----------------------------------------------------------------------
void videoDevice::setSize(int w, int h){
if(sizeSet){
if(verbose)printf("SETUP: Error device size should not be set more than once \n");
}
else
{
width = w;
height = h;
videoSize = w*h*3;
sizeSet = true;
pixels = new unsigned char[videoSize];
pBuffer = new char[videoSize];
memset(pixels, 0 , videoSize);
sgCallback->setupBuffer(videoSize);
}
}
// ----------------------------------------------------------------------
// Borrowed from the SDK, use it to take apart the graph from
// the capture device downstream to the null renderer
// ----------------------------------------------------------------------
void videoDevice::NukeDownstream(IBaseFilter *pBF){
IPin *pP, *pTo;
ULONG u;
IEnumPins *pins = NULL;
PIN_INFO pininfo;
HRESULT hr = pBF->EnumPins(&pins);
pins->Reset();
while (hr == NOERROR)
{
hr = pins->Next(1, &pP, &u);
if (hr == S_OK && pP)
{
pP->ConnectedTo(&pTo);
if (pTo)
{
hr = pTo->QueryPinInfo(&pininfo);
if (hr == NOERROR)
{
if (pininfo.dir == PINDIR_INPUT)
{
NukeDownstream(pininfo.pFilter);
pGraph->Disconnect(pTo);
pGraph->Disconnect(pP);
pGraph->RemoveFilter(pininfo.pFilter);
}
pininfo.pFilter->Release();
pininfo.pFilter = NULL;
}
pTo->Release();
}
pP->Release();
}
}
if (pins) pins->Release();
}
// ----------------------------------------------------------------------
// Also from SDK
// ----------------------------------------------------------------------
void videoDevice::destroyGraph(){
HRESULT hr = NOERROR;
//int FuncRetval=0;
//int NumFilters=0;
int i = 0;
while (hr == NOERROR)
{
IEnumFilters * pEnum = 0;
ULONG cFetched;
// We must get the enumerator again every time because removing a filter from the graph
// invalidates the enumerator. We always get only the first filter from each enumerator.
hr = pGraph->EnumFilters(&pEnum);
if (FAILED(hr)) { if(verbose)printf("SETUP: pGraph->EnumFilters() failed. \n"); return; }
IBaseFilter * pFilter = NULL;
if (pEnum->Next(1, &pFilter, &cFetched) == S_OK)
{
FILTER_INFO FilterInfo;
memset(&FilterInfo, 0, sizeof(FilterInfo));
hr = pFilter->QueryFilterInfo(&FilterInfo);
FilterInfo.pGraph->Release();
int count = 0;
char buffer[255];
memset(buffer, 0, 255 * sizeof(char));
while( FilterInfo.achName[count] != 0x00 )
{
buffer[count] = (char)FilterInfo.achName[count];
count++;
}
if(verbose)printf("SETUP: removing filter %s...\n", buffer);
hr = pGraph->RemoveFilter(pFilter);
if (FAILED(hr)) { if(verbose)printf("SETUP: pGraph->RemoveFilter() failed. \n"); return; }
if(verbose)printf("SETUP: filter removed %s \n",buffer);
pFilter->Release();
pFilter = NULL;
}
else break;
pEnum->Release();
pEnum = NULL;
i++;
}
return;
}
// ----------------------------------------------------------------------
// Our deconstructor, attempts to tear down graph and release filters etc
// Does checking to make sure it only is freeing if it needs to
// Probably could be a lot cleaner! :)
// ----------------------------------------------------------------------
videoDevice::~videoDevice(){
if(setupStarted){ if(verbose)printf("\nSETUP: Disconnecting device %i\n", myID); }
else{
if(sgCallback){
sgCallback->Release();
delete sgCallback;
}
return;
}
HRESULT HR = NOERROR;
//Stop the callback and free it
if( (sgCallback) && (pGrabber) )
{
pGrabber->SetCallback(NULL, 1);
if(verbose)printf("SETUP: freeing Grabber Callback\n");
sgCallback->Release();
//delete our pixels
if(sizeSet){
delete[] pixels;
delete[] pBuffer;
}
delete sgCallback;
}
//Check to see if the graph is running, if so stop it.
if( (pControl) )
{
HR = pControl->Pause();
if (FAILED(HR)) if(verbose)printf("ERROR - Could not pause pControl\n");
HR = pControl->Stop();
if (FAILED(HR)) if(verbose)printf("ERROR - Could not stop pControl\n");
}
//Disconnect filters from capture device
if( (pVideoInputFilter) )NukeDownstream(pVideoInputFilter);
//Release and zero pointers to our filters etc
if( (pDestFilter) ){ if(verbose)printf("SETUP: freeing Renderer \n");
(pDestFilter)->Release();
(pDestFilter) = 0;
}
if( (pVideoInputFilter) ){ if(verbose)printf("SETUP: freeing Capture Source \n");
(pVideoInputFilter)->Release();
(pVideoInputFilter) = 0;
}
if( (pGrabberF) ){ if(verbose)printf("SETUP: freeing Grabber Filter \n");
(pGrabberF)->Release();
(pGrabberF) = 0;
}
if( (pGrabber) ){ if(verbose)printf("SETUP: freeing Grabber \n");
(pGrabber)->Release();
(pGrabber) = 0;
}
if( (pControl) ){ if(verbose)printf("SETUP: freeing Control \n");
(pControl)->Release();
(pControl) = 0;
}
if( (pMediaEvent) ){ if(verbose)printf("SETUP: freeing Media Event \n");
(pMediaEvent)->Release();
(pMediaEvent) = 0;
}
if( (streamConf) ){ if(verbose)printf("SETUP: freeing Stream \n");
(streamConf)->Release();
(streamConf) = 0;
}
if( (pAmMediaType) ){ if(verbose)printf("SETUP: freeing Media Type \n");
MyDeleteMediaType(pAmMediaType);
}
if((pMediaEvent)){
if(verbose)printf("SETUP: freeing Media Event \n");
(pMediaEvent)->Release();
(pMediaEvent) = 0;
}
//Destroy the graph
if( (pGraph) )destroyGraph();
//Release and zero our capture graph and our main graph
if( (pCaptureGraph) ){ if(verbose)printf("SETUP: freeing Capture Graph \n");
(pCaptureGraph)->Release();
(pCaptureGraph) = 0;
}
if( (pGraph) ){ if(verbose)printf("SETUP: freeing Main Graph \n");
(pGraph)->Release();
(pGraph) = 0;
}
//delete our pointers
delete pDestFilter;
delete pVideoInputFilter;
delete pGrabberF;
delete pGrabber;
delete pControl;
delete streamConf;
delete pMediaEvent;
delete pCaptureGraph;
delete pGraph;
if(verbose)printf("SETUP: Device %i disconnected and freed\n\n",myID);
}
////////////////////////////// VIDEO INPUT ////////////////////////////////
//////////////////////////// PUBLIC METHODS ///////////////////////////////
// ----------------------------------------------------------------------
// Constructor - creates instances of videoDevice and adds the various
// media subtypes to check.
// ----------------------------------------------------------------------
videoInput::videoInput(){
//start com
comInit();
devicesFound = 0;
callbackSetCount = 0;
bCallback = true;
//setup a max no of device objects
for(int i=0; i<VI_MAX_CAMERAS; i++) VDList[i] = new videoDevice();
if(verbose)printf("\n***** VIDEOINPUT LIBRARY - %2.04f - TFW07 *****\n\n",VI_VERSION);
//added for the pixelink firewire camera
//MEDIASUBTYPE_Y800 = (GUID)FOURCCMap(FCC('Y800'));
//MEDIASUBTYPE_Y8 = (GUID)FOURCCMap(FCC('Y8'));
//MEDIASUBTYPE_GREY = (GUID)FOURCCMap(FCC('GREY'));
//The video types we support
//in order of preference
mediaSubtypes[0] = MEDIASUBTYPE_RGB24;
mediaSubtypes[1] = MEDIASUBTYPE_RGB32;
mediaSubtypes[2] = MEDIASUBTYPE_RGB555;
mediaSubtypes[3] = MEDIASUBTYPE_RGB565;
mediaSubtypes[4] = MEDIASUBTYPE_YUY2;
mediaSubtypes[5] = MEDIASUBTYPE_YVYU;
mediaSubtypes[6] = MEDIASUBTYPE_YUYV;
mediaSubtypes[7] = MEDIASUBTYPE_IYUV;
mediaSubtypes[8] = MEDIASUBTYPE_UYVY;
mediaSubtypes[9] = MEDIASUBTYPE_YV12;
mediaSubtypes[10] = MEDIASUBTYPE_YVU9;
mediaSubtypes[11] = MEDIASUBTYPE_Y411;
mediaSubtypes[12] = MEDIASUBTYPE_Y41P;
mediaSubtypes[13] = MEDIASUBTYPE_Y211;
mediaSubtypes[14] = MEDIASUBTYPE_AYUV;
//non standard
mediaSubtypes[15] = MEDIASUBTYPE_Y800;
mediaSubtypes[16] = MEDIASUBTYPE_Y8;
mediaSubtypes[17] = MEDIASUBTYPE_GREY;
//The video formats we support
formatTypes[VI_NTSC_M] = AnalogVideo_NTSC_M;
formatTypes[VI_NTSC_M_J] = AnalogVideo_NTSC_M_J;
formatTypes[VI_NTSC_433] = AnalogVideo_NTSC_433;
formatTypes[VI_PAL_B] = AnalogVideo_PAL_B;
formatTypes[VI_PAL_D] = AnalogVideo_PAL_D;
formatTypes[VI_PAL_G] = AnalogVideo_PAL_G;
formatTypes[VI_PAL_H] = AnalogVideo_PAL_H;
formatTypes[VI_PAL_I] = AnalogVideo_PAL_I;
formatTypes[VI_PAL_M] = AnalogVideo_PAL_M;
formatTypes[VI_PAL_N] = AnalogVideo_PAL_N;
formatTypes[VI_PAL_NC] = AnalogVideo_PAL_N_COMBO;
formatTypes[VI_SECAM_B] = AnalogVideo_SECAM_B;
formatTypes[VI_SECAM_D] = AnalogVideo_SECAM_D;
formatTypes[VI_SECAM_G] = AnalogVideo_SECAM_G;
formatTypes[VI_SECAM_H] = AnalogVideo_SECAM_H;
formatTypes[VI_SECAM_K] = AnalogVideo_SECAM_K;
formatTypes[VI_SECAM_K1] = AnalogVideo_SECAM_K1;
formatTypes[VI_SECAM_L] = AnalogVideo_SECAM_L;
propBrightness = VideoProcAmp_Brightness;
propContrast = VideoProcAmp_Contrast;
propHue = VideoProcAmp_Hue;
propSaturation = VideoProcAmp_Saturation;
propSharpness = VideoProcAmp_Sharpness;
propGamma = VideoProcAmp_Gamma;
propColorEnable = VideoProcAmp_ColorEnable;
propWhiteBalance = VideoProcAmp_WhiteBalance;
propBacklightCompensation = VideoProcAmp_BacklightCompensation;
propGain = VideoProcAmp_Gain;
propPan = CameraControl_Pan;
propTilt = CameraControl_Tilt;
propRoll = CameraControl_Roll;
propZoom = CameraControl_Zoom;
propExposure = CameraControl_Exposure;
propIris = CameraControl_Iris;
propFocus = CameraControl_Focus;
}
// ----------------------------------------------------------------------
// static - set whether messages get printed to console or not
//
// ----------------------------------------------------------------------
void videoInput::setVerbose(bool _verbose){
verbose = _verbose;
}
// ----------------------------------------------------------------------
// change to use callback or regular capture
// callback tells you when a new frame has arrived
// but non-callback won't - but is single threaded
// ----------------------------------------------------------------------
void videoInput::setUseCallback(bool useCallback){
if(callbackSetCount == 0){
bCallback = useCallback;
callbackSetCount = 1;
}else{
printf("ERROR: setUseCallback can only be called before setup\n");
}
}
// ----------------------------------------------------------------------
// Set the requested framerate - no guarantee you will get this
//
// ----------------------------------------------------------------------
void videoInput::setIdealFramerate(int deviceNumber, int idealFramerate){
if(deviceNumber >= VI_MAX_CAMERAS || VDList[deviceNumber]->readyToCapture) return;
if( idealFramerate > 0 ){
VDList[deviceNumber]->requestedFrameTime = (unsigned long)(10000000 / idealFramerate);
}
}
// ----------------------------------------------------------------------
// Set the requested framerate - no guarantee you will get this
//
// ----------------------------------------------------------------------
void videoInput::setAutoReconnectOnFreeze(int deviceNumber, bool doReconnect, int numMissedFramesBeforeReconnect){
if(deviceNumber >= VI_MAX_CAMERAS) return;
VDList[deviceNumber]->autoReconnect = doReconnect;
VDList[deviceNumber]->nFramesForReconnect = numMissedFramesBeforeReconnect;
}
// ----------------------------------------------------------------------
// Setup a device with the default settings
//
// ----------------------------------------------------------------------
bool videoInput::setupDevice(int deviceNumber){
if(deviceNumber >= VI_MAX_CAMERAS || VDList[deviceNumber]->readyToCapture) return false;
if(setup(deviceNumber))return true;
return false;
}
// ----------------------------------------------------------------------
// Setup a device with the default size but specify input type
//
// ----------------------------------------------------------------------
bool videoInput::setupDevice(int deviceNumber, int connection){
if(deviceNumber >= VI_MAX_CAMERAS || VDList[deviceNumber]->readyToCapture) return false;
setPhyCon(deviceNumber, connection);
if(setup(deviceNumber))return true;
return false;
}
// ----------------------------------------------------------------------
// Setup a device with the default connection but specify size
//
// ----------------------------------------------------------------------
bool videoInput::setupDevice(int deviceNumber, int w, int h){
if(deviceNumber >= VI_MAX_CAMERAS || VDList[deviceNumber]->readyToCapture) return false;
setAttemptCaptureSize(deviceNumber,w,h);
if(setup(deviceNumber))return true;
return false;
}
// ----------------------------------------------------------------------
// Setup a device with specific size and connection
//
// ----------------------------------------------------------------------
bool videoInput::setupDevice(int deviceNumber, int w, int h, int connection){
if(deviceNumber >= VI_MAX_CAMERAS || VDList[deviceNumber]->readyToCapture) return false;
setAttemptCaptureSize(deviceNumber,w,h);
setPhyCon(deviceNumber, connection);
if(setup(deviceNumber))return true;
return false;
}
// ----------------------------------------------------------------------
// Setup the default video format of the device
// Must be called after setup!
// See #define formats in header file (eg VI_NTSC_M )
//
// ----------------------------------------------------------------------
bool videoInput::setFormat(int deviceNumber, int format){
if(deviceNumber >= VI_MAX_CAMERAS || !VDList[deviceNumber]->readyToCapture) return false;
bool returnVal = false;
if(format >= 0 && format < VI_NUM_FORMATS){
VDList[deviceNumber]->formatType = formatTypes[format];
VDList[deviceNumber]->specificFormat = true;
if(VDList[deviceNumber]->specificFormat){
HRESULT hr = getDevice(&VDList[deviceNumber]->pVideoInputFilter, deviceNumber, VDList[deviceNumber]->wDeviceName, VDList[deviceNumber]->nDeviceName);
if(hr != S_OK){
return false;
}
IAMAnalogVideoDecoder *pVideoDec = NULL;
hr = VDList[deviceNumber]->pCaptureGraph->FindInterface(NULL, &MEDIATYPE_Video, VDList[deviceNumber]->pVideoInputFilter, IID_IAMAnalogVideoDecoder, (void **)&pVideoDec);
//in case the settings window some how freed them first
if(VDList[deviceNumber]->pVideoInputFilter)VDList[deviceNumber]->pVideoInputFilter->Release();
if(VDList[deviceNumber]->pVideoInputFilter)VDList[deviceNumber]->pVideoInputFilter = NULL;
if(FAILED(hr)){
printf("SETUP: couldn't set requested format\n");
}else{
long lValue = 0;
hr = pVideoDec->get_AvailableTVFormats(&lValue);
if( SUCCEEDED(hr) && (lValue & VDList[deviceNumber]->formatType) )
{
hr = pVideoDec->put_TVFormat(VDList[deviceNumber]->formatType);
if( FAILED(hr) ){
printf("SETUP: couldn't set requested format\n");
}else{
returnVal = true;
}
}
pVideoDec->Release();
pVideoDec = NULL;
}
}
}
return returnVal;
}
// ----------------------------------------------------------------------
// Our static function for returning device names - thanks Peter!
// Must call listDevices first.
//
// ----------------------------------------------------------------------
char videoInput::deviceNames[VI_MAX_CAMERAS][255]={{0}};
char * videoInput::getDeviceName(int deviceID){
if( deviceID >= VI_MAX_CAMERAS ){
return NULL;
}
return deviceNames[deviceID];
}
// ----------------------------------------------------------------------
// Our static function for finding num devices available etc
//
// ----------------------------------------------------------------------
int videoInput::listDevices(bool silent){
//COM Library Intialization
comInit();
if(!silent)printf("\nVIDEOINPUT SPY MODE!\n\n");
ICreateDevEnum *pDevEnum = NULL;
IEnumMoniker *pEnum = NULL;
int deviceCounter = 0;
HRESULT hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL,
CLSCTX_INPROC_SERVER, IID_ICreateDevEnum,
reinterpret_cast<void**>(&pDevEnum));
if (SUCCEEDED(hr))
{
// Create an enumerator for the video capture category.
hr = pDevEnum->CreateClassEnumerator(
CLSID_VideoInputDeviceCategory,
&pEnum, 0);
if(hr == S_OK){
if(!silent)printf("SETUP: Looking For Capture Devices\n");
IMoniker *pMoniker = NULL;
while (pEnum->Next(1, &pMoniker, NULL) == S_OK){
IPropertyBag *pPropBag;
hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag,
(void**)(&pPropBag));
if (FAILED(hr)){
pMoniker->Release();
continue; // Skip this one, maybe the next one will work.
}
// Find the description or friendly name.
VARIANT varName;
VariantInit(&varName);
hr = pPropBag->Read(L"Description", &varName, 0);
if (FAILED(hr)) hr = pPropBag->Read(L"FriendlyName", &varName, 0);
if (SUCCEEDED(hr)){
hr = pPropBag->Read(L"FriendlyName", &varName, 0);
int count = 0;
int maxLen = sizeof(deviceNames[0])/sizeof(deviceNames[0][0]) - 2;
while( varName.bstrVal[count] != 0x00 && count < maxLen) {
deviceNames[deviceCounter][count] = (char)varName.bstrVal[count];
count++;
}
deviceNames[deviceCounter][count] = 0;
if(!silent)printf("SETUP: %i) %s \n",deviceCounter, deviceNames[deviceCounter]);
}
pPropBag->Release();
pPropBag = NULL;
pMoniker->Release();
pMoniker = NULL;
deviceCounter++;
}
pDevEnum->Release();
pDevEnum = NULL;
pEnum->Release();
pEnum = NULL;
}
if(!silent)printf("SETUP: %i Device(s) found\n\n", deviceCounter);
}
comUnInit();
return deviceCounter;
}
// ----------------------------------------------------------------------
//
//
// ----------------------------------------------------------------------
int videoInput::getWidth(int id){
if(isDeviceSetup(id))
{
return VDList[id] ->width;
}
return 0;
}
// ----------------------------------------------------------------------
//
//
// ----------------------------------------------------------------------
int videoInput::getHeight(int id){
if(isDeviceSetup(id))
{
return VDList[id] ->height;
}
return 0;
}
// ----------------------------------------------------------------------
//
//
// ----------------------------------------------------------------------
int videoInput::getSize(int id){
if(isDeviceSetup(id))
{
return VDList[id] ->videoSize;
}
return 0;
}
// ----------------------------------------------------------------------
// Uses a supplied buffer
// ----------------------------------------------------------------------
bool videoInput::getPixels(int id, unsigned char * dstBuffer, bool flipRedAndBlue, bool flipImage){
bool success = false;
if(isDeviceSetup(id)){
if(bCallback){
//callback capture
DWORD result = WaitForSingleObject(VDList[id]->sgCallback->hEvent, 1000);
if( result != WAIT_OBJECT_0) return false;
//double paranoia - mutexing with both event and critical section
EnterCriticalSection(&VDList[id]->sgCallback->critSection);
unsigned char * src = VDList[id]->sgCallback->pixels;
unsigned char * dst = dstBuffer;
int height = VDList[id]->height;
int width = VDList[id]->width;
processPixels(src, dst, width, height, flipRedAndBlue, flipImage);
VDList[id]->sgCallback->newFrame = false;
LeaveCriticalSection(&VDList[id]->sgCallback->critSection);
ResetEvent(VDList[id]->sgCallback->hEvent);
success = true;
}
else{
//regular capture method
long bufferSize = VDList[id]->videoSize;
HRESULT hr = VDList[id]->pGrabber->GetCurrentBuffer(&bufferSize, (long *)VDList[id]->pBuffer);
if(hr==S_OK){
int numBytes = VDList[id]->videoSize;
if (numBytes == bufferSize){
unsigned char * src = (unsigned char * )VDList[id]->pBuffer;
unsigned char * dst = dstBuffer;
int height = VDList[id]->height;
int width = VDList[id]->width;
processPixels(src, dst, width, height, flipRedAndBlue, flipImage);
success = true;
}else{
if(verbose)printf("ERROR: GetPixels() - bufferSizes do not match!\n");
}
}else{
if(verbose)printf("ERROR: GetPixels() - Unable to grab frame for device %i\n", id);
}
}
}
return success;
}
// ----------------------------------------------------------------------
// Returns a buffer
// ----------------------------------------------------------------------
unsigned char * videoInput::getPixels(int id, bool flipRedAndBlue, bool flipImage){
if(isDeviceSetup(id)){
getPixels(id, VDList[id]->pixels, flipRedAndBlue, flipImage);
}
return VDList[id]->pixels;
}
// ----------------------------------------------------------------------
//
//
// ----------------------------------------------------------------------
bool videoInput::isFrameNew(int id){
if(!isDeviceSetup(id)) return false;
if(!bCallback)return true;
bool result = false;
bool freeze = false;
//again super paranoia!
EnterCriticalSection(&VDList[id]->sgCallback->critSection);
result = VDList[id]->sgCallback->newFrame;
//we need to give it some time at the begining to start up so lets check after 400 frames
if(VDList[id]->nFramesRunning > 400 && VDList[id]->sgCallback->freezeCheck > VDList[id]->nFramesForReconnect ){
freeze = true;
}
//we increment the freezeCheck var here - the callback resets it to 1
//so as long as the callback is running this var should never get too high.
//if the callback is not running then this number will get high and trigger the freeze action below
VDList[id]->sgCallback->freezeCheck++;
LeaveCriticalSection(&VDList[id]->sgCallback->critSection);
VDList[id]->nFramesRunning++;
if(freeze && VDList[id]->autoReconnect){
if(verbose)printf("ERROR: Device seems frozen - attempting to reconnect\n");
if( !restartDevice(VDList[id]->myID) ){
if(verbose)printf("ERROR: Unable to reconnect to device\n");
}else{
if(verbose)printf("SUCCESS: Able to reconnect to device\n");
}
}
return result;
}
// ----------------------------------------------------------------------
//
//
// ----------------------------------------------------------------------
bool videoInput::isDeviceSetup(int id){
if(id<devicesFound && VDList[id]->readyToCapture)return true;
else return false;
}
// ----------------------------------------------------------------------
// Gives us a little pop up window to adjust settings
// We do this in a seperate thread now!
// ----------------------------------------------------------------------
void __cdecl videoInput::basicThread(void * objPtr){
//get a reference to the video device
//not a copy as we need to free the filter
videoDevice * vd = *( (videoDevice **)(objPtr) );
ShowFilterPropertyPages(vd->pVideoInputFilter);
//now we free the filter and make sure it set to NULL
if(vd->pVideoInputFilter)vd->pVideoInputFilter->Release();
if(vd->pVideoInputFilter)vd->pVideoInputFilter = NULL;
return;
}
void videoInput::showSettingsWindow(int id){
if(isDeviceSetup(id)){
HANDLE myTempThread;
//we reconnect to the device as we have freed our reference to it
//why have we freed our reference? because there seemed to be an issue
//with some mpeg devices if we didn't
HRESULT hr = getDevice(&VDList[id]->pVideoInputFilter, id, VDList[id]->wDeviceName, VDList[id]->nDeviceName);
if(hr == S_OK){
myTempThread = (HANDLE)_beginthread(basicThread, 0, (void *)&VDList[id]);
}
}
}
// Set a video signal setting using IAMVideoProcAmp
bool videoInput::getVideoSettingFilter(int deviceID, long Property, long &min, long &max, long &SteppingDelta, long &currentValue, long &flags, long &defaultValue){
if( !isDeviceSetup(deviceID) )return false;
HRESULT hr;
//bool isSuccessful = false;
videoDevice * VD = VDList[deviceID];
hr = getDevice(&VD->pVideoInputFilter, deviceID, VD->wDeviceName, VD->nDeviceName);
if (FAILED(hr)){
printf("setVideoSetting - getDevice Error\n");
return false;
}
IAMVideoProcAmp *pAMVideoProcAmp = NULL;
hr = VD->pVideoInputFilter->QueryInterface(IID_IAMVideoProcAmp, (void**)&pAMVideoProcAmp);
if(FAILED(hr)){
printf("setVideoSetting - QueryInterface Error\n");
if(VD->pVideoInputFilter)VD->pVideoInputFilter->Release();
if(VD->pVideoInputFilter)VD->pVideoInputFilter = NULL;
return false;
}
if (verbose) printf("Setting video setting %ld.\n", Property);
pAMVideoProcAmp->GetRange(Property, &min, &max, &SteppingDelta, &defaultValue, &flags);
if (verbose) printf("Range for video setting %ld: Min:%ld Max:%ld SteppingDelta:%ld Default:%ld Flags:%ld\n", Property, min, max, SteppingDelta, defaultValue, flags);
pAMVideoProcAmp->Get(Property, &currentValue, &flags);
if(pAMVideoProcAmp)pAMVideoProcAmp->Release();
if(VD->pVideoInputFilter)VD->pVideoInputFilter->Release();
if(VD->pVideoInputFilter)VD->pVideoInputFilter = NULL;
return true;
}
// Set a video signal setting using IAMVideoProcAmp
bool videoInput::setVideoSettingFilterPct(int deviceID, long Property, float pctValue, long Flags){
if( !isDeviceSetup(deviceID) )return false;
long min, max, currentValue, flags, defaultValue, stepAmnt;
if( !getVideoSettingFilter(deviceID, Property, min, max, stepAmnt, currentValue, flags, defaultValue) )return false;
if(pctValue > 1.0)pctValue = 1.0;
else if(pctValue < 0)pctValue = 0.0;
float range = (float)max - (float)min;
if(range <= 0)return false;
if(stepAmnt == 0) return false;
long value = (long)( (float)min + range * pctValue );
long rasterValue = value;
//if the range is the stepAmnt then it is just a switch
//so we either set the value to low or high
if( range == stepAmnt ){
if( pctValue < 0.5)rasterValue = min;
else rasterValue = max;
}else{
//we need to rasterize the value to the stepping amnt
long mod = value % stepAmnt;
float halfStep = (float)stepAmnt * 0.5f;
if( mod < halfStep ) rasterValue -= mod;
else rasterValue += stepAmnt - mod;
printf("RASTER - pctValue is %f - value is %ld - step is %ld - mod is %ld - rasterValue is %ld\n", pctValue, value, stepAmnt, mod, rasterValue);
}
return setVideoSettingFilter(deviceID, Property, rasterValue, Flags, false);
}
// Set a video signal setting using IAMVideoProcAmp
bool videoInput::setVideoSettingFilter(int deviceID, long Property, long lValue, long Flags, bool useDefaultValue){
if( !isDeviceSetup(deviceID) )return false;
HRESULT hr;
//bool isSuccessful = false;
videoDevice * VD = VDList[deviceID];
hr = getDevice(&VD->pVideoInputFilter, deviceID, VD->wDeviceName, VD->nDeviceName);
if (FAILED(hr)){
printf("setVideoSetting - getDevice Error\n");
return false;
}
IAMVideoProcAmp *pAMVideoProcAmp = NULL;
hr = VD->pVideoInputFilter->QueryInterface(IID_IAMVideoProcAmp, (void**)&pAMVideoProcAmp);
if(FAILED(hr)){
printf("setVideoSetting - QueryInterface Error\n");
if(VD->pVideoInputFilter)VD->pVideoInputFilter->Release();
if(VD->pVideoInputFilter)VD->pVideoInputFilter = NULL;
return false;
}
if (verbose) printf("Setting video setting %ld.\n", Property);
long CurrVal, Min, Max, SteppingDelta, Default, CapsFlags, AvailableCapsFlags = 0;
pAMVideoProcAmp->GetRange(Property, &Min, &Max, &SteppingDelta, &Default, &AvailableCapsFlags);
if (verbose) printf("Range for video setting %ld: Min:%ld Max:%ld SteppingDelta:%ld Default:%ld Flags:%ld\n", Property, Min, Max, SteppingDelta, Default, AvailableCapsFlags);
pAMVideoProcAmp->Get(Property, &CurrVal, &CapsFlags);
if (verbose) printf("Current value: %ld Flags %ld (%s)\n", CurrVal, CapsFlags, (CapsFlags == 1 ? "Auto" : (CapsFlags == 2 ? "Manual" : "Unknown")));
if (useDefaultValue) {
pAMVideoProcAmp->Set(Property, Default, VideoProcAmp_Flags_Auto);
}
else{
// Perhaps add a check that lValue and Flags are within the range aquired from GetRange above
pAMVideoProcAmp->Set(Property, lValue, Flags);
}
if(pAMVideoProcAmp)pAMVideoProcAmp->Release();
if(VD->pVideoInputFilter)VD->pVideoInputFilter->Release();
if(VD->pVideoInputFilter)VD->pVideoInputFilter = NULL;
return true;
}
bool videoInput::setVideoSettingCameraPct(int deviceID, long Property, float pctValue, long Flags){
if( !isDeviceSetup(deviceID) )return false;
long min, max, currentValue, flags, defaultValue, stepAmnt;
if( !getVideoSettingCamera(deviceID, Property, min, max, stepAmnt, currentValue, flags, defaultValue) )return false;
if(pctValue > 1.0)pctValue = 1.0;
else if(pctValue < 0)pctValue = 0.0;
float range = (float)max - (float)min;
if(range <= 0)return false;
if(stepAmnt == 0) return false;
long value = (long)( (float)min + range * pctValue );
long rasterValue = value;
//if the range is the stepAmnt then it is just a switch
//so we either set the value to low or high
if( range == stepAmnt ){
if( pctValue < 0.5)rasterValue = min;
else rasterValue = max;
}else{
//we need to rasterize the value to the stepping amnt
long mod = value % stepAmnt;
float halfStep = (float)stepAmnt * 0.5f;
if( mod < halfStep ) rasterValue -= mod;
else rasterValue += stepAmnt - mod;
printf("RASTER - pctValue is %f - value is %ld - step is %ld - mod is %ld - rasterValue is %ld\n", pctValue, value, stepAmnt, mod, rasterValue);
}
return setVideoSettingCamera(deviceID, Property, rasterValue, Flags, false);
}
bool videoInput::setVideoSettingCamera(int deviceID, long Property, long lValue, long Flags, bool useDefaultValue){
IAMCameraControl *pIAMCameraControl;
if(isDeviceSetup(deviceID))
{
HRESULT hr;
hr = getDevice(&VDList[deviceID]->pVideoInputFilter, deviceID, VDList[deviceID]->wDeviceName, VDList[deviceID]->nDeviceName);
if (verbose) printf("Setting video setting %ld.\n", Property);
hr = VDList[deviceID]->pVideoInputFilter->QueryInterface(IID_IAMCameraControl, (void**)&pIAMCameraControl);
if (FAILED(hr)) {
printf("Error\n");
return false;
}
else
{
long CurrVal, Min, Max, SteppingDelta, Default, CapsFlags, AvailableCapsFlags;
pIAMCameraControl->GetRange(Property, &Min, &Max, &SteppingDelta, &Default, &AvailableCapsFlags);
if (verbose) printf("Range for video setting %ld: Min:%ld Max:%ld SteppingDelta:%ld Default:%ld Flags:%ld\n", Property, Min, Max, SteppingDelta, Default, AvailableCapsFlags);
pIAMCameraControl->Get(Property, &CurrVal, &CapsFlags);
if (verbose) printf("Current value: %ld Flags %ld (%s)\n", CurrVal, CapsFlags, (CapsFlags == 1 ? "Auto" : (CapsFlags == 2 ? "Manual" : "Unknown")));
if (useDefaultValue) {
pIAMCameraControl->Set(Property, Default, CameraControl_Flags_Auto);
}
else
{
// Perhaps add a check that lValue and Flags are within the range aquired from GetRange above
pIAMCameraControl->Set(Property, lValue, Flags);
}
pIAMCameraControl->Release();
return true;
}
}
return false;
}
bool videoInput::getVideoSettingCamera(int deviceID, long Property, long &min, long &max, long &SteppingDelta, long &currentValue, long &flags, long &defaultValue){
if( !isDeviceSetup(deviceID) )return false;
HRESULT hr;
//bool isSuccessful = false;
videoDevice * VD = VDList[deviceID];
hr = getDevice(&VD->pVideoInputFilter, deviceID, VD->wDeviceName, VD->nDeviceName);
if (FAILED(hr)){
printf("setVideoSetting - getDevice Error\n");
return false;
}
IAMCameraControl *pIAMCameraControl = NULL;
hr = VD->pVideoInputFilter->QueryInterface(IID_IAMCameraControl, (void**)&pIAMCameraControl);
if(FAILED(hr)){
printf("setVideoSetting - QueryInterface Error\n");
if(VD->pVideoInputFilter)VD->pVideoInputFilter->Release();
if(VD->pVideoInputFilter)VD->pVideoInputFilter = NULL;
return false;
}
if (verbose) printf("Setting video setting %ld.\n", Property);
pIAMCameraControl->GetRange(Property, &min, &max, &SteppingDelta, &defaultValue, &flags);
if (verbose) printf("Range for video setting %ld: Min:%ld Max:%ld SteppingDelta:%ld Default:%ld Flags:%ld\n", Property, min, max, SteppingDelta, defaultValue, flags);
pIAMCameraControl->Get(Property, &currentValue, &flags);
if(pIAMCameraControl)pIAMCameraControl->Release();
if(VD->pVideoInputFilter)VD->pVideoInputFilter->Release();
if(VD->pVideoInputFilter)VD->pVideoInputFilter = NULL;
return true;
}
// ----------------------------------------------------------------------
// Shutsdown the device, deletes the object and creates a new object
// so it is ready to be setup again
// ----------------------------------------------------------------------
void videoInput::stopDevice(int id){
if(id < VI_MAX_CAMERAS)
{
delete VDList[id];
VDList[id] = new videoDevice();
}
}
// ----------------------------------------------------------------------
// Restarts the device with the same settings it was using
//
// ----------------------------------------------------------------------
bool videoInput::restartDevice(int id){
if(isDeviceSetup(id))
{
int conn = VDList[id]->storeConn;
int tmpW = VDList[id]->width;
int tmpH = VDList[id]->height;
bool bFormat = VDList[id]->specificFormat;
long format = VDList[id]->formatType;
int nReconnect = VDList[id]->nFramesForReconnect;
bool bReconnect = VDList[id]->autoReconnect;
long avgFrameTime = VDList[id]->requestedFrameTime;
stopDevice(id);
//set our fps if needed
if( avgFrameTime != -1){
VDList[id]->requestedFrameTime = avgFrameTime;
}
if( setupDevice(id, tmpW, tmpH, conn) ){
//reapply the format - ntsc / pal etc
if( bFormat ){
setFormat(id, format);
}
if( bReconnect ){
setAutoReconnectOnFreeze(id, true, nReconnect);
}
return true;
}
}
return false;
}
// ----------------------------------------------------------------------
// Shuts down all devices, deletes objects and unitializes com if needed
//
// ----------------------------------------------------------------------
videoInput::~videoInput(){
for(int i = 0; i < VI_MAX_CAMERAS; i++)
{
delete VDList[i];
}
//Unitialize com
comUnInit();
}
////////////////////////////// VIDEO INPUT ////////////////////////////////
//////////////////////////// PRIVATE METHODS //////////////////////////////
// ----------------------------------------------------------------------
// We only should init com if it hasn't been done so by our apps thread
// Use a static counter to keep track of other times it has been inited
// (do we need to worry about multithreaded apps?)
// ----------------------------------------------------------------------
bool videoInput::comInit(){
HRESULT hr = NOERROR;
//no need for us to start com more than once
if(comInitCount == 0 ){
// Initialize the COM library.
//CoInitializeEx so videoInput can run in another thread
#ifdef VI_COM_MULTI_THREADED
hr = CoInitializeEx(NULL,COINIT_MULTITHREADED);
#else
hr = CoInitialize(NULL);
#endif
//this is the only case where there might be a problem
//if another library has started com as single threaded
//and we need it multi-threaded - send warning but don't fail
if( hr == RPC_E_CHANGED_MODE){
if(verbose)printf("SETUP - COM already setup - threaded VI might not be possible\n");
}
}
comInitCount++;
return true;
}
// ----------------------------------------------------------------------
// Same as above but to unitialize com, decreases counter and frees com
// if no one else is using it
// ----------------------------------------------------------------------
bool videoInput::comUnInit(){
if(comInitCount > 0)comInitCount--; //decrease the count of instances using com
if(comInitCount == 0){
CoUninitialize(); //if there are no instances left - uninitialize com
return true;
}
return false;
}
// ----------------------------------------------------------------------
// This is the size we ask for - we might not get it though :)
//
// ----------------------------------------------------------------------
void videoInput::setAttemptCaptureSize(int id, int w, int h){
VDList[id]->tryWidth = w;
VDList[id]->tryHeight = h;
VDList[id]->tryDiffSize = true;
}
// ----------------------------------------------------------------------
// Set the connection type
// (maybe move to private?)
// ----------------------------------------------------------------------
void videoInput::setPhyCon(int id, int conn){
switch(conn){
case 0:
VDList[id]->connection = PhysConn_Video_Composite;
break;
case 1:
VDList[id]->connection = PhysConn_Video_SVideo;
break;
case 2:
VDList[id]->connection = PhysConn_Video_Tuner;
break;
case 3:
VDList[id]->connection = PhysConn_Video_USB;
break;
case 4:
VDList[id]->connection = PhysConn_Video_1394;
break;
default:
return; //if it is not these types don't set crossbar
break;
}
VDList[id]->storeConn = conn;
VDList[id]->useCrossbar = true;
}
// ----------------------------------------------------------------------
// Check that we are not trying to setup a non-existant device
// Then start the graph building!
// ----------------------------------------------------------------------
bool videoInput::setup(int deviceNumber){
devicesFound = getDeviceCount();
if(deviceNumber>devicesFound-1)
{
if(verbose)printf("SETUP: device[%i] not found - you have %i devices available\n", deviceNumber, devicesFound);
if(devicesFound>=0) if(verbose)printf("SETUP: this means that the last device you can use is device[%i] \n", devicesFound-1);
return false;
}
if(VDList[deviceNumber]->readyToCapture)
{
if(verbose)printf("SETUP: can't setup, device %i is currently being used\n",VDList[deviceNumber]->myID);
return false;
}
HRESULT hr = start(deviceNumber, VDList[deviceNumber]);
if(hr == S_OK)return true;
else return false;
}
// ----------------------------------------------------------------------
// Does both vertical buffer flipping and bgr to rgb swapping
// You have any combination of those.
// ----------------------------------------------------------------------
void videoInput::processPixels(unsigned char * src, unsigned char * dst, int width, int height, bool bRGB, bool bFlip){
int widthInBytes = width * 3;
int numBytes = widthInBytes * height;
if(!bRGB){
//int x = 0;
//int y = 0;
if(bFlip){
for(int y = 0; y < height; y++){
memcpy(dst + (y * widthInBytes), src + ( (height -y -1) * widthInBytes), widthInBytes);
}
}else{
memcpy(dst, src, numBytes);
}
}else{
if(bFlip){
int x = 0;
int y = (height - 1) * widthInBytes;
src += y;
for(int i = 0; i < numBytes; i+=3){
if(x >= width){
x = 0;
src -= widthInBytes*2;
}
*dst = *(src+2);
dst++;
*dst = *(src+1);
dst++;
*dst = *src;
dst++;
src+=3;
x++;
}
}
else{
for(int i = 0; i < numBytes; i+=3){
*dst = *(src+2);
dst++;
*dst = *(src+1);
dst++;
*dst = *src;
dst++;
src+=3;
}
}
}
}
//------------------------------------------------------------------------------------------
void videoInput::getMediaSubtypeAsString(GUID type, char * typeAsString){
char tmpStr[8];
if( type == MEDIASUBTYPE_RGB24) sprintf(tmpStr, "RGB24");
else if(type == MEDIASUBTYPE_RGB32) sprintf(tmpStr, "RGB32");
else if(type == MEDIASUBTYPE_RGB555)sprintf(tmpStr, "RGB555");
else if(type == MEDIASUBTYPE_RGB565)sprintf(tmpStr, "RGB565");
else if(type == MEDIASUBTYPE_YUY2) sprintf(tmpStr, "YUY2");
else if(type == MEDIASUBTYPE_YVYU) sprintf(tmpStr, "YVYU");
else if(type == MEDIASUBTYPE_YUYV) sprintf(tmpStr, "YUYV");
else if(type == MEDIASUBTYPE_IYUV) sprintf(tmpStr, "IYUV");
else if(type == MEDIASUBTYPE_UYVY) sprintf(tmpStr, "UYVY");
else if(type == MEDIASUBTYPE_YV12) sprintf(tmpStr, "YV12");
else if(type == MEDIASUBTYPE_YVU9) sprintf(tmpStr, "YVU9");
else if(type == MEDIASUBTYPE_Y411) sprintf(tmpStr, "Y411");
else if(type == MEDIASUBTYPE_Y41P) sprintf(tmpStr, "Y41P");
else if(type == MEDIASUBTYPE_Y211) sprintf(tmpStr, "Y211");
else if(type == MEDIASUBTYPE_AYUV) sprintf(tmpStr, "AYUV");
else if(type == MEDIASUBTYPE_Y800) sprintf(tmpStr, "Y800");
else if(type == MEDIASUBTYPE_Y8) sprintf(tmpStr, "Y8");
else if(type == MEDIASUBTYPE_GREY) sprintf(tmpStr, "GREY");
else sprintf(tmpStr, "OTHER");
memcpy(typeAsString, tmpStr, sizeof(char)*8);
}
//-------------------------------------------------------------------------------------------
static void findClosestSizeAndSubtype(videoDevice * VD, int widthIn, int heightIn, int &widthOut, int &heightOut, GUID & mediatypeOut){
HRESULT hr;
//find perfect match or closest size
int nearW = 9999999;
int nearH = 9999999;
bool foundClosestMatch = true;
int iCount = 0;
int iSize = 0;
hr = VD->streamConf->GetNumberOfCapabilities(&iCount, &iSize);
if (iSize == sizeof(VIDEO_STREAM_CONFIG_CAPS))
{
//For each format type RGB24 YUV2 etc
for (int iFormat = 0; iFormat < iCount; iFormat++)
{
VIDEO_STREAM_CONFIG_CAPS scc;
AM_MEDIA_TYPE *pmtConfig;
hr = VD->streamConf->GetStreamCaps(iFormat, &pmtConfig, (BYTE*)&scc);
if (SUCCEEDED(hr)){
//his is how many diff sizes are available for the format
int stepX = scc.OutputGranularityX;
int stepY = scc.OutputGranularityY;
int tempW = 999999;
int tempH = 999999;
//Don't want to get stuck in a loop
if(stepX < 1 || stepY < 1) continue;
//if(verbose)printf("min is %i %i max is %i %i - res is %i %i \n", scc.MinOutputSize.cx, scc.MinOutputSize.cy, scc.MaxOutputSize.cx, scc.MaxOutputSize.cy, stepX, stepY);
//if(verbose)printf("min frame duration is %i max duration is %i\n", scc.MinFrameInterval, scc.MaxFrameInterval);
bool exactMatch = false;
bool exactMatchX = false;
bool exactMatchY = false;
for(int x = scc.MinOutputSize.cx; x <= scc.MaxOutputSize.cx; x+= stepX){
//If we find an exact match
if( widthIn == x ){
exactMatchX = true;
tempW = x;
}
//Otherwise lets find the closest match based on width
else if( abs(widthIn-x) < abs(widthIn-tempW) ){
tempW = x;
}
}
for(int y = scc.MinOutputSize.cy; y <= scc.MaxOutputSize.cy; y+= stepY){
//If we find an exact match
if( heightIn == y){
exactMatchY = true;
tempH = y;
}
//Otherwise lets find the closest match based on height
else if( abs(heightIn-y) < abs(heightIn-tempH) ){
tempH = y;
}
}
//see if we have an exact match!
if(exactMatchX && exactMatchY){
foundClosestMatch = false;
exactMatch = true;
widthOut = widthIn;
heightOut = heightIn;
mediatypeOut = pmtConfig->subtype;
}
//otherwise lets see if this filters closest size is the closest
//available. the closest size is determined by the sum difference
//of the widths and heights
else if( abs(widthIn - tempW) + abs(heightIn - tempH) < abs(widthIn - nearW) + abs(heightIn - nearH) )
{
nearW = tempW;
nearH = tempH;
widthOut = nearW;
heightOut = nearH;
mediatypeOut = pmtConfig->subtype;
}
MyDeleteMediaType(pmtConfig);
//If we have found an exact match no need to search anymore
if(exactMatch)break;
}
}
}
}
//---------------------------------------------------------------------------------------------------
static bool setSizeAndSubtype(videoDevice * VD, int attemptWidth, int attemptHeight, GUID mediatype){
VIDEOINFOHEADER *pVih = reinterpret_cast<VIDEOINFOHEADER*>(VD->pAmMediaType->pbFormat);
//store current size
//int tmpWidth = HEADER(pVih)->biWidth;
//int tmpHeight = HEADER(pVih)->biHeight;
AM_MEDIA_TYPE * tmpType = NULL;
HRESULT hr = VD->streamConf->GetFormat(&tmpType);
if(hr != S_OK)return false;
//set new size:
//width and height
HEADER(pVih)->biWidth = attemptWidth;
HEADER(pVih)->biHeight = attemptHeight;
VD->pAmMediaType->formattype = FORMAT_VideoInfo;
VD->pAmMediaType->majortype = MEDIATYPE_Video;
VD->pAmMediaType->subtype = mediatype;
//buffer size
VD->pAmMediaType->lSampleSize = attemptWidth*attemptHeight*3;
//set fps if requested
if( VD->requestedFrameTime != -1){
pVih->AvgTimePerFrame = VD->requestedFrameTime;
}
//okay lets try new size
hr = VD->streamConf->SetFormat(VD->pAmMediaType);
if(hr == S_OK){
if( tmpType != NULL )MyDeleteMediaType(tmpType);
return true;
}else{
VD->streamConf->SetFormat(tmpType);
if( tmpType != NULL )MyDeleteMediaType(tmpType);
}
return false;
}
// ----------------------------------------------------------------------
// Where all the work happens!
// Attempts to build a graph for the specified device
// ----------------------------------------------------------------------
int videoInput::start(int deviceID, videoDevice *VD){
HRESULT hr = NOERROR;
VD->myID = deviceID;
VD->setupStarted = true;
CAPTURE_MODE = PIN_CATEGORY_CAPTURE; //Don't worry - it ends up being preview (which is faster)
callbackSetCount = 1; //make sure callback method is not changed after setup called
if(verbose)printf("SETUP: Setting up device %i\n",deviceID);
// CREATE THE GRAPH BUILDER //
// Create the filter graph manager and query for interfaces.
hr = CoCreateInstance(CLSID_CaptureGraphBuilder2, NULL, CLSCTX_INPROC_SERVER, IID_ICaptureGraphBuilder2, (void **)&VD->pCaptureGraph);
if (FAILED(hr)) // FAILED is a macro that tests the return value
{
if(verbose)printf("ERROR - Could not create the Filter Graph Manager\n");
return hr;
}
//FITLER GRAPH MANAGER//
// Create the Filter Graph Manager.
hr = CoCreateInstance(CLSID_FilterGraph, 0, CLSCTX_INPROC_SERVER,IID_IGraphBuilder, (void**)&VD->pGraph);
if (FAILED(hr))
{
if(verbose)printf("ERROR - Could not add the graph builder!\n");
stopDevice(deviceID);
return hr;
}
//SET THE FILTERGRAPH//
hr = VD->pCaptureGraph->SetFiltergraph(VD->pGraph);
if (FAILED(hr))
{
if(verbose)printf("ERROR - Could not set filtergraph\n");
stopDevice(deviceID);
return hr;
}
//MEDIA CONTROL (START/STOPS STREAM)//
// Using QueryInterface on the graph builder,
// Get the Media Control object.
hr = VD->pGraph->QueryInterface(IID_IMediaControl, (void **)&VD->pControl);
if (FAILED(hr))
{
if(verbose)printf("ERROR - Could not create the Media Control object\n");
stopDevice(deviceID);
return hr;
}
//FIND VIDEO DEVICE AND ADD TO GRAPH//
//gets the device specified by the second argument.
hr = getDevice(&VD->pVideoInputFilter, deviceID, VD->wDeviceName, VD->nDeviceName);
if (SUCCEEDED(hr)){
if(verbose)printf("SETUP: %s\n", VD->nDeviceName);
hr = VD->pGraph->AddFilter(VD->pVideoInputFilter, VD->wDeviceName);
}else{
if(verbose)printf("ERROR - Could not find specified video device\n");
stopDevice(deviceID);
return hr;
}
//LOOK FOR PREVIEW PIN IF THERE IS NONE THEN WE USE CAPTURE PIN AND THEN SMART TEE TO PREVIEW
IAMStreamConfig *streamConfTest = NULL;
hr = VD->pCaptureGraph->FindInterface(&PIN_CATEGORY_PREVIEW, &MEDIATYPE_Video, VD->pVideoInputFilter, IID_IAMStreamConfig, (void **)&streamConfTest);
if(FAILED(hr)){
if(verbose)printf("SETUP: Couldn't find preview pin using SmartTee\n");
}else{
CAPTURE_MODE = PIN_CATEGORY_PREVIEW;
streamConfTest->Release();
streamConfTest = NULL;
}
//CROSSBAR (SELECT PHYSICAL INPUT TYPE)//
//my own function that checks to see if the device can support a crossbar and if so it routes it.
//webcams tend not to have a crossbar so this function will also detect a webcams and not apply the crossbar
if(VD->useCrossbar)
{
if(verbose)printf("SETUP: Checking crossbar\n");
routeCrossbar(&VD->pCaptureGraph, &VD->pVideoInputFilter, VD->connection, CAPTURE_MODE);
}
//we do this because webcams don't have a preview mode
hr = VD->pCaptureGraph->FindInterface(&CAPTURE_MODE, &MEDIATYPE_Video, VD->pVideoInputFilter, IID_IAMStreamConfig, (void **)&VD->streamConf);
if(FAILED(hr)){
if(verbose)printf("ERROR: Couldn't config the stream!\n");
stopDevice(deviceID);
return hr;
}
//NOW LETS DEAL WITH GETTING THE RIGHT SIZE
hr = VD->streamConf->GetFormat(&VD->pAmMediaType);
if(FAILED(hr)){
if(verbose)printf("ERROR: Couldn't getFormat for pAmMediaType!\n");
stopDevice(deviceID);
return hr;
}
VIDEOINFOHEADER *pVih = reinterpret_cast<VIDEOINFOHEADER*>(VD->pAmMediaType->pbFormat);
int currentWidth = HEADER(pVih)->biWidth;
int currentHeight = HEADER(pVih)->biHeight;
bool customSize = VD->tryDiffSize;
bool foundSize = false;
if(customSize){
if(verbose) printf("SETUP: Default Format is set to %i by %i \n", currentWidth, currentHeight);
char guidStr[8];
for(int i = 0; i < VI_NUM_TYPES; i++){
getMediaSubtypeAsString(mediaSubtypes[i], guidStr);
if(verbose)printf("SETUP: trying format %s @ %i by %i\n", guidStr, VD->tryWidth, VD->tryHeight);
if( setSizeAndSubtype(VD, VD->tryWidth, VD->tryHeight, mediaSubtypes[i]) ){
VD->setSize(VD->tryWidth, VD->tryHeight);
foundSize = true;
break;
}
}
//if we didn't find the requested size - lets try and find the closest matching size
if( foundSize == false ){
if( verbose )printf("SETUP: couldn't find requested size - searching for closest matching size\n");
int closestWidth = -1;
int closestHeight = -1;
GUID newMediaSubtype;
findClosestSizeAndSubtype(VD, VD->tryWidth, VD->tryHeight, closestWidth, closestHeight, newMediaSubtype);
if( closestWidth != -1 && closestHeight != -1){
getMediaSubtypeAsString(newMediaSubtype, guidStr);
if(verbose)printf("SETUP: closest supported size is %s @ %i %i\n", guidStr, closestWidth, closestHeight);
if( setSizeAndSubtype(VD, closestWidth, closestHeight, newMediaSubtype) ){
VD->setSize(closestWidth, closestHeight);
foundSize = true;
}
}
}
}
//if we didn't specify a custom size or if we did but couldn't find it lets setup with the default settings
if(customSize == false || foundSize == false){
if( VD->requestedFrameTime != -1 ){
pVih->AvgTimePerFrame = VD->requestedFrameTime;
hr = VD->streamConf->SetFormat(VD->pAmMediaType);
}
VD->setSize(currentWidth, currentHeight);
}
//SAMPLE GRABBER (ALLOWS US TO GRAB THE BUFFER)//
// Create the Sample Grabber.
hr = CoCreateInstance(CLSID_SampleGrabber, NULL, CLSCTX_INPROC_SERVER,IID_IBaseFilter, (void**)&VD->pGrabberF);
if (FAILED(hr)){
if(verbose)printf("Could not Create Sample Grabber - CoCreateInstance()\n");
stopDevice(deviceID);
return hr;
}
hr = VD->pGraph->AddFilter(VD->pGrabberF, L"Sample Grabber");
if (FAILED(hr)){
if(verbose)printf("Could not add Sample Grabber - AddFilter()\n");
stopDevice(deviceID);
return hr;
}
hr = VD->pGrabberF->QueryInterface(IID_ISampleGrabber, (void**)&VD->pGrabber);
if (FAILED(hr)){
if(verbose)printf("ERROR: Could not query SampleGrabber\n");
stopDevice(deviceID);
return hr;
}
//Set Params - One Shot should be false unless you want to capture just one buffer
hr = VD->pGrabber->SetOneShot(FALSE);
if(bCallback){
hr = VD->pGrabber->SetBufferSamples(FALSE);
}else{
hr = VD->pGrabber->SetBufferSamples(TRUE);
}
if(bCallback){
//Tell the grabber to use our callback function - 0 is for SampleCB and 1 for BufferCB
//We use SampleCB
hr = VD->pGrabber->SetCallback(VD->sgCallback, 0);
if (FAILED(hr)){
if(verbose)printf("ERROR: problem setting callback\n");
stopDevice(deviceID);
return hr;
}else{
if(verbose)printf("SETUP: Capture callback set\n");
}
}
//MEDIA CONVERSION
//Get video properties from the stream's mediatype and apply to the grabber (otherwise we don't get an RGB image)
//zero the media type - lets try this :) - maybe this works?
AM_MEDIA_TYPE mt;
ZeroMemory(&mt,sizeof(AM_MEDIA_TYPE));
mt.majortype = MEDIATYPE_Video;
mt.subtype = MEDIASUBTYPE_RGB24;
mt.formattype = FORMAT_VideoInfo;
//VD->pAmMediaType->subtype = VD->videoType;
hr = VD->pGrabber->SetMediaType(&mt);
//lets try freeing our stream conf here too
//this will fail if the device is already running
if(VD->streamConf){
VD->streamConf->Release();
VD->streamConf = NULL;
}else{
if(verbose)printf("ERROR: connecting device - prehaps it is already being used?\n");
stopDevice(deviceID);
return S_FALSE;
}
//NULL RENDERER//
//used to give the video stream somewhere to go to.
hr = CoCreateInstance(CLSID_NullRenderer, NULL, CLSCTX_INPROC_SERVER, IID_IBaseFilter, (void**)(&VD->pDestFilter));
if (FAILED(hr)){
if(verbose)printf("ERROR: Could not create filter - NullRenderer\n");
stopDevice(deviceID);
return hr;
}
hr = VD->pGraph->AddFilter(VD->pDestFilter, L"NullRenderer");
if (FAILED(hr)){
if(verbose)printf("ERROR: Could not add filter - NullRenderer\n");
stopDevice(deviceID);
return hr;
}
//RENDER STREAM//
//This is where the stream gets put together.
hr = VD->pCaptureGraph->RenderStream(&PIN_CATEGORY_PREVIEW, &MEDIATYPE_Video, VD->pVideoInputFilter, VD->pGrabberF, VD->pDestFilter);
if (FAILED(hr)){
if(verbose)printf("ERROR: Could not connect pins - RenderStream()\n");
stopDevice(deviceID);
return hr;
}
//EXP - lets try setting the sync source to null - and make it run as fast as possible
{
IMediaFilter *pMediaFilter = 0;
hr = VD->pGraph->QueryInterface(IID_IMediaFilter, (void**)&pMediaFilter);
if (FAILED(hr)){
if(verbose)printf("ERROR: Could not get IID_IMediaFilter interface\n");
}else{
pMediaFilter->SetSyncSource(NULL);
pMediaFilter->Release();
}
}
//LETS RUN THE STREAM!
hr = VD->pControl->Run();
if (FAILED(hr)){
if(verbose)printf("ERROR: Could not start graph\n");
stopDevice(deviceID);
return hr;
}
//MAKE SURE THE DEVICE IS SENDING VIDEO BEFORE WE FINISH
if(!bCallback){
long bufferSize = VD->videoSize;
while( hr != S_OK){
hr = VD->pGrabber->GetCurrentBuffer(&bufferSize, (long *)VD->pBuffer);
Sleep(10);
}
}
if(verbose)printf("SETUP: Device is setup and ready to capture.\n\n");
VD->readyToCapture = true;
//Release filters - seen someone else do this
//looks like it solved the freezes
//if we release this then we don't have access to the settings
//we release our video input filter but then reconnect with it
//each time we need to use it
VD->pVideoInputFilter->Release();
VD->pVideoInputFilter = NULL;
VD->pGrabberF->Release();
VD->pGrabberF = NULL;
VD->pDestFilter->Release();
VD->pDestFilter = NULL;
return S_OK;
}
// ----------------------------------------------------------------------
// Returns number of good devices
//
// ----------------------------------------------------------------------
int videoInput::getDeviceCount(){
ICreateDevEnum *pDevEnum = NULL;
IEnumMoniker *pEnum = NULL;
int deviceCounter = 0;
HRESULT hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL,
CLSCTX_INPROC_SERVER, IID_ICreateDevEnum,
reinterpret_cast<void**>(&pDevEnum));
if (SUCCEEDED(hr))
{
// Create an enumerator for the video capture category.
hr = pDevEnum->CreateClassEnumerator(
CLSID_VideoInputDeviceCategory,
&pEnum, 0);
if(hr == S_OK){
IMoniker *pMoniker = NULL;
while (pEnum->Next(1, &pMoniker, NULL) == S_OK){
IPropertyBag *pPropBag;
hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag,
(void**)(&pPropBag));
if (FAILED(hr)){
pMoniker->Release();
continue; // Skip this one, maybe the next one will work.
}
pPropBag->Release();
pPropBag = NULL;
pMoniker->Release();
pMoniker = NULL;
deviceCounter++;
}
pEnum->Release();
pEnum = NULL;
}
pDevEnum->Release();
pDevEnum = NULL;
}
return deviceCounter;
}
// ----------------------------------------------------------------------
// Do we need this?
//
// Enumerate all of the video input devices
// Return the filter with a matching friendly name
// ----------------------------------------------------------------------
HRESULT videoInput::getDevice(IBaseFilter** gottaFilter, int deviceId, WCHAR * wDeviceName, char * nDeviceName){
BOOL done = false;
int deviceCounter = 0;
// Create the System Device Enumerator.
ICreateDevEnum *pSysDevEnum = NULL;
HRESULT hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER, IID_ICreateDevEnum, (void **)&pSysDevEnum);
if (FAILED(hr))
{
return hr;
}
// Obtain a class enumerator for the video input category.
IEnumMoniker *pEnumCat = NULL;
hr = pSysDevEnum->CreateClassEnumerator(CLSID_VideoInputDeviceCategory, &pEnumCat, 0);
if (hr == S_OK)
{
// Enumerate the monikers.
IMoniker *pMoniker = NULL;
ULONG cFetched;
while ((pEnumCat->Next(1, &pMoniker, &cFetched) == S_OK) && (!done))
{
if(deviceCounter == deviceId)
{
// Bind the first moniker to an object
IPropertyBag *pPropBag;
hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag, (void **)&pPropBag);
if (SUCCEEDED(hr))
{
// To retrieve the filter's friendly name, do the following:
VARIANT varName;
VariantInit(&varName);
hr = pPropBag->Read(L"FriendlyName", &varName, 0);
if (SUCCEEDED(hr))
{
//copy the name to nDeviceName & wDeviceName
int count = 0;
while( varName.bstrVal[count] != 0x00 ) {
wDeviceName[count] = varName.bstrVal[count];
nDeviceName[count] = (char)varName.bstrVal[count];
count++;
}
// We found it, so send it back to the caller
hr = pMoniker->BindToObject(NULL, NULL, IID_IBaseFilter, (void**)gottaFilter);
done = true;
}
VariantClear(&varName);
pPropBag->Release();
pPropBag = NULL;
pMoniker->Release();
pMoniker = NULL;
}
}
deviceCounter++;
}
pEnumCat->Release();
pEnumCat = NULL;
}
pSysDevEnum->Release();
pSysDevEnum = NULL;
if (done) {
return hr; // found it, return native error
} else {
return VFW_E_NOT_FOUND; // didn't find it error
}
}
// ----------------------------------------------------------------------
// Show the property pages for a filter
// This is stolen from the DX9 SDK
// ----------------------------------------------------------------------
HRESULT videoInput::ShowFilterPropertyPages(IBaseFilter *pFilter){
ISpecifyPropertyPages *pProp;
HRESULT hr = pFilter->QueryInterface(IID_ISpecifyPropertyPages, (void **)&pProp);
if (SUCCEEDED(hr))
{
// Get the filter's name and IUnknown pointer.
FILTER_INFO FilterInfo;
hr = pFilter->QueryFilterInfo(&FilterInfo);
IUnknown *pFilterUnk;
pFilter->QueryInterface(IID_IUnknown, (void **)&pFilterUnk);
// Show the page.
CAUUID caGUID;
pProp->GetPages(&caGUID);
pProp->Release();
OleCreatePropertyFrame(
NULL, // Parent window
0, 0, // Reserved
FilterInfo.achName, // Caption for the dialog box
1, // Number of objects (just the filter)
&pFilterUnk, // Array of object pointers.
caGUID.cElems, // Number of property pages
caGUID.pElems, // Array of property page CLSIDs
0, // Locale identifier
0, NULL // Reserved
);
// Clean up.
if(pFilterUnk)pFilterUnk->Release();
if(FilterInfo.pGraph)FilterInfo.pGraph->Release();
CoTaskMemFree(caGUID.pElems);
}
return hr;
}
// ----------------------------------------------------------------------
// This code was also brazenly stolen from the DX9 SDK
// Pass it a file name in wszPath, and it will save the filter graph to that file.
// ----------------------------------------------------------------------
HRESULT videoInput::SaveGraphFile(IGraphBuilder *pGraph, WCHAR *wszPath) {
const WCHAR wszStreamName[] = L"ActiveMovieGraph";
HRESULT hr;
IStorage *pStorage = NULL;
// First, create a document file which will hold the GRF file
hr = StgCreateDocfile(
wszPath,
STGM_CREATE | STGM_TRANSACTED | STGM_READWRITE | STGM_SHARE_EXCLUSIVE,
0, &pStorage);
if(FAILED(hr))
{
return hr;
}
// Next, create a stream to store.
IStream *pStream;
hr = pStorage->CreateStream(
wszStreamName,
STGM_WRITE | STGM_CREATE | STGM_SHARE_EXCLUSIVE,
0, 0, &pStream);
if (FAILED(hr))
{
pStorage->Release();
return hr;
}
// The IPersistStream converts a stream into a persistent object.
IPersistStream *pPersist = NULL;
pGraph->QueryInterface(IID_IPersistStream, reinterpret_cast<void**>(&pPersist));
hr = pPersist->Save(pStream, TRUE);
pStream->Release();
pPersist->Release();
if (SUCCEEDED(hr))
{
hr = pStorage->Commit(STGC_DEFAULT);
}
pStorage->Release();
return hr;
}
// ----------------------------------------------------------------------
// For changing the input types
//
// ----------------------------------------------------------------------
HRESULT videoInput::routeCrossbar(ICaptureGraphBuilder2 **ppBuild, IBaseFilter **pVidInFilter, int conType, GUID captureMode){
//create local ICaptureGraphBuilder2
ICaptureGraphBuilder2 *pBuild = NULL;
pBuild = *ppBuild;
//create local IBaseFilter
IBaseFilter *pVidFilter = NULL;
pVidFilter = * pVidInFilter;
// Search upstream for a crossbar.
IAMCrossbar *pXBar1 = NULL;
HRESULT hr = pBuild->FindInterface(&LOOK_UPSTREAM_ONLY, NULL, pVidFilter,
IID_IAMCrossbar, (void**)&pXBar1);
if (SUCCEEDED(hr))
{
bool foundDevice = false;
if(verbose)printf("SETUP: You are not a webcam! Setting Crossbar\n");
pXBar1->Release();
IAMCrossbar *Crossbar;
hr = pBuild->FindInterface(&captureMode, &MEDIATYPE_Interleaved, pVidFilter, IID_IAMCrossbar, (void **)&Crossbar);
if(hr != NOERROR){
hr = pBuild->FindInterface(&captureMode, &MEDIATYPE_Video, pVidFilter, IID_IAMCrossbar, (void **)&Crossbar);
}
LONG lInpin, lOutpin;
hr = Crossbar->get_PinCounts(&lOutpin , &lInpin);
BOOL IPin=TRUE; LONG pIndex=0 , pRIndex=0 , pType=0;
while( pIndex < lInpin)
{
hr = Crossbar->get_CrossbarPinInfo( IPin , pIndex , &pRIndex , &pType);
if( pType == conType){
if(verbose)printf("SETUP: Found Physical Interface");
switch(conType){
case PhysConn_Video_Composite:
if(verbose)printf(" - Composite\n");
break;
case PhysConn_Video_SVideo:
if(verbose)printf(" - S-Video\n");
break;
case PhysConn_Video_Tuner:
if(verbose)printf(" - Tuner\n");
break;
case PhysConn_Video_USB:
if(verbose)printf(" - USB\n");
break;
case PhysConn_Video_1394:
if(verbose)printf(" - Firewire\n");
break;
}
foundDevice = true;
break;
}
pIndex++;
}
if(foundDevice){
BOOL OPin=FALSE; LONG pOIndex=0 , pORIndex=0 , pOType=0;
while( pOIndex < lOutpin)
{
hr = Crossbar->get_CrossbarPinInfo( OPin , pOIndex , &pORIndex , &pOType);
if( pOType == PhysConn_Video_VideoDecoder)
break;
}
Crossbar->Route(pOIndex,pIndex);
}else{
if(verbose)printf("SETUP: Didn't find specified Physical Connection type. Using Defualt. \n");
}
//we only free the crossbar when we close or restart the device
//we were getting a crash otherwise
//if(Crossbar)Crossbar->Release();
//if(Crossbar)Crossbar = NULL;
if(pXBar1)pXBar1->Release();
if(pXBar1)pXBar1 = NULL;
}else{
if(verbose)printf("SETUP: You are a webcam or snazzy firewire cam! No Crossbar needed\n");
return hr;
}
return hr;
}
/********************* Capturing video from camera via VFW *********************/
class CvCaptureCAM_DShow : public CvCapture
{
public:
CvCaptureCAM_DShow();
virtual ~CvCaptureCAM_DShow() { close(); }
virtual bool open( int index );
virtual void close();
virtual double getProperty(int);
virtual bool setProperty(int, double);
virtual bool grabFrame();
virtual IplImage* retrieveFrame(int);
virtual int getCaptureDomain() { return CV_CAP_DSHOW; } // Return the type of the capture object: CV_CAP_VFW, etc...
protected:
void init();
int index, width, height;
IplImage* frame;
static videoInput VI;
};
struct SuppressVideoInputMessages
{
SuppressVideoInputMessages() { videoInput::setVerbose(false); }
};
static SuppressVideoInputMessages do_it;
videoInput CvCaptureCAM_DShow::VI;
CvCaptureCAM_DShow::CvCaptureCAM_DShow()
{
index = -1;
frame = 0;
width = height = -1;
}
void CvCaptureCAM_DShow::close()
{
if( index >= 0 )
{
VI.stopDevice(index);
index = -1;
cvReleaseImage(&frame);
}
width = height = -1;
}
// Initialize camera input
bool CvCaptureCAM_DShow::open( int _index )
{
int try_index = _index;
int devices = 0;
close();
devices = VI.listDevices(true);
if (devices == 0)
return false;
try_index = try_index < 0 ? 0 : (try_index > devices-1 ? devices-1 : try_index);
VI.setupDevice(try_index);
if( !VI.isDeviceSetup(try_index) )
return false;
index = try_index;
return true;
}
bool CvCaptureCAM_DShow::grabFrame()
{
return true;
}
IplImage* CvCaptureCAM_DShow::retrieveFrame(int)
{
if( !frame || VI.getWidth(index) != frame->width || VI.getHeight(index) != frame->height )
{
if (frame)
cvReleaseImage( &frame );
int w = VI.getWidth(index), h = VI.getHeight(index);
frame = cvCreateImage( cvSize(w,h), 8, 3 );
}
VI.getPixels( index, (uchar*)frame->imageData, false, true );
return frame;
}
double CvCaptureCAM_DShow::getProperty( int property_id )
{
switch( property_id )
{
case CV_CAP_PROP_FRAME_WIDTH:
return VI.getWidth(index);
case CV_CAP_PROP_FRAME_HEIGHT:
return VI.getHeight(index);
case CV_CAP_PROP_FOURCC:
return 0;
}
return 0;
}
bool CvCaptureCAM_DShow::setProperty( int property_id, double value )
{
switch( property_id )
{
case CV_CAP_PROP_FRAME_WIDTH:
width = cvRound(value);
break;
case CV_CAP_PROP_FRAME_HEIGHT:
height = cvRound(value);
break;
default:
return false;
}
if( width > 0 && height > 0 )
{
if( width != VI.getWidth(index) || height != VI.getHeight(index) )
{
VI.stopDevice(index);
VI.setupDevice(index, width, height);
}
width = height = -1;
return VI.isDeviceSetup(index);
}
return true;
}
CvCapture* cvCreateCameraCapture_DShow( int index )
{
CvCaptureCAM_DShow* capture = new CvCaptureCAM_DShow;
if( capture->open( index ))
return capture;
delete capture;
return 0;
}
#endif
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